CN208921836U - A kind of air-conditioning control panel detecting tool - Google Patents
A kind of air-conditioning control panel detecting tool Download PDFInfo
- Publication number
- CN208921836U CN208921836U CN201821614627.6U CN201821614627U CN208921836U CN 208921836 U CN208921836 U CN 208921836U CN 201821614627 U CN201821614627 U CN 201821614627U CN 208921836 U CN208921836 U CN 208921836U
- Authority
- CN
- China
- Prior art keywords
- optocoupler
- current loop
- communication circuit
- connects
- loop communication
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000004378 air conditioning Methods 0.000 title claims abstract description 17
- 238000004891 communication Methods 0.000 claims abstract description 387
- 239000003990 capacitor Substances 0.000 claims description 66
- 230000008878 coupling Effects 0.000 claims description 14
- 238000010168 coupling process Methods 0.000 claims description 14
- 238000005859 coupling reaction Methods 0.000 claims description 14
- 230000005611 electricity Effects 0.000 claims description 14
- 238000012360 testing method Methods 0.000 abstract description 18
- 238000001514 detection method Methods 0.000 abstract description 7
- 238000012423 maintenance Methods 0.000 abstract description 3
- 230000003760 hair shine Effects 0.000 description 43
- 230000005856 abnormality Effects 0.000 description 19
- 238000010586 diagram Methods 0.000 description 9
- 230000000694 effects Effects 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 230000001681 protective effect Effects 0.000 description 2
- 238000011895 specific detection Methods 0.000 description 2
- 230000006641 stabilisation Effects 0.000 description 2
- 238000011105 stabilization Methods 0.000 description 2
- 238000007792 addition Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Landscapes
- Air Conditioning Control Device (AREA)
Abstract
The utility model discloses a kind of air-conditioning control panel detecting tools, including controller, display screen, the first current loop communication circuit, the second current loop communication circuit, third current loop communication circuit, the 4th current loop communication circuit, the first relay, the second relay；Controller the first relay of control selects the first current loop communication circuit or the second current loop communication circuit and indoor unit current loop communication circuit to carry out communication test whether powering on, controller the second relay of control selects third current loop communication circuit or the 4th current loop communication circuit and outdoor unit current loop communication circuit to carry out communication test whether powering on, controller controls the display of display screen according to collected voltage signal；After-sales staff passes through display screen you can learn that whether indoor unit control panel, outdoor unit control panel communicate normally, in order to after-sales staff on-call maintenance or replacement, solves the problems, such as that indoor unit control panel, the detection of outdoor unit control panel are inconvenient.
Description
Technical field
The utility model belongs to field of circuit technology, specifically, being to be related to a kind of air-conditioning control panel detecting tool.
Background technique
Data are carried out according to the rule and agreement that have consulted between air conditioner indoor unit master control borad and outdoor unit master control borad
Exchange, realize communication.
When indoor unit master control borad and outdoor unit master control borad communication abnormality between the two, can not judge to be indoor unit master control borad
It breaks down or outdoor unit master control borad breaks down, detection is inconvenient.
Summary of the invention
The utility model provides a kind of air-conditioning control panel detecting tool, solves indoor unit control panel and outdoor unit control
The inconvenient problem of plate detection.
In order to solve the above technical problems, the utility model is achieved using following technical scheme:
A kind of air-conditioning control panel detecting tool, the air-conditioning control panel include indoor unit control panel and outdoor unit control panel；
The indoor unit control panel includes indoor machine controller, indoor unit current loop communication circuit, the indoor unit current ring communication electricity
Road includes two input/output terminals: the first input/output terminal, the second input/output terminal, the first input/output terminal connection first
Communication line, second input/output terminal connect the first zero curve；The outdoor unit control panel includes outdoor controller, outdoor unit
Current loop communication circuit, the outdoor unit current loop communication circuit include two input/output terminals: third input/output terminal, the 4th
Input/output terminal, the third input/output terminal connect the second communication line, and the 4th input/output terminal connects the second zero curve；Institute
Stating detecting tool includes controller, display screen, the first current loop communication circuit, the second current loop communication circuit, third electric current loop
Telecommunication circuit, the 4th current loop communication circuit, the first relay, the second relay；First current loop communication circuit and
Two current loop communication circuits respectively include input terminal and output end；Described in the input terminal connection of first current loop communication circuit
First zero curve, the output end of first current loop communication circuit connect first relay it is normally closed/open stationary contact, it is described
The input terminal of second current loop communication circuit connects the normal opening/closing stationary contact of first relay, and second electric current loop is logical
Believe that the output end of circuit connects first zero curve, the movable contact of first relay connects first communication line；It is described
Whether the coil that controller controls the first relay powers on；The controller acquires the first current loop communication circuit, second respectively
The voltage signal of current loop communication circuit, and display screen is controlled according to collected voltage signal and is shown；The third electric current loop
Telecommunication circuit and the 4th current loop communication circuit respectively include input terminal and output end；The third current loop communication circuit it is defeated
Outlet connects second zero curve, the input terminal of the third current loop communication circuit connect second relay it is normally closed/
Stationary contact is opened, the output end of the 4th current loop communication circuit connects the normal opening/closing stationary contact of second relay, described
The input terminal of 4th current loop communication circuit connects second zero curve, the movable contact connection described second of second relay
Communication line；Whether the coil that the controller controls the second relay powers on；It is logical that the controller acquires third electric current loop respectively
Believe the voltage signal of circuit, the 4th current loop communication circuit, and display screen is controlled according to collected voltage signal and is shown.
Further, first current loop communication circuit includes the first optocoupler, the second optocoupler, first switch tube；It is described
Controller connects the control terminal of first switch tube, one end ground connection of the switch ways of the first switch tube, the first switch
The other end of the switch ways of pipe connects the output end of the luminous end of the first optocoupler, the input terminal of the luminous end of first optocoupler
Connect DC power supply；The input terminal of the light-receiving end of first optocoupler connects the anode of the first charging capacitor, first charging
The cathode of capacitor connects the input terminal of the first current loop communication circuit, anode the first firewire of connection of first charging capacitor；
The output end of the light-receiving end of first optocoupler connects the input terminal of the luminous end of the second optocoupler, the luminous end of second optocoupler
Output end connect the first current loop communication circuit output end；The input terminal of the light-receiving end of second optocoupler connects control
Device, and DC power supply is connected by the first pull-up resistor；The output end of the light-receiving end of second optocoupler is grounded.
Further, second current loop communication circuit includes third optocoupler, the 4th optocoupler, second switch；Institute
The control terminal of controller connection second switch is stated, one end ground connection of the switch ways of the second switch, described second opens
Close the output end of the luminous end of the other end the 4th optocoupler of connection of the switch ways of pipe, the input of the luminous end of the 4th optocoupler
End connection DC power supply；The input terminal of the light-receiving end of 4th optocoupler connects the input terminal of the second current loop communication circuit；Institute
The input terminal of the luminous end of the output end connection third optocoupler of the light-receiving end of the 4th optocoupler is stated, the luminous end of the third optocoupler
Output end connects the output end of the second current loop communication circuit；The input terminal of the light-receiving end of the third optocoupler connects direct current
The output end in source, the light-receiving end of the third optocoupler is grounded by the first pull down resistor, and connects controller.
Further, the indoor unit current loop communication circuit includes the 5th optocoupler, the 6th optocoupler, third switching tube；
The control terminal of the interior machine controller connection third switching tube, one end ground connection of the switch ways of the third switching tube, institute
The output end of the luminous end of the other end the 5th optocoupler of connection of the switch ways of third switching tube is stated, the 5th optocoupler shines
The input terminal at end connects DC power supply；The input terminal of the light-receiving end of 5th optocoupler connects the first input/output terminal, and described the
The output end of the light-receiving end of five optocouplers connects the input terminal of the luminous end of the 6th optocoupler, the output of the luminous end of the 6th optocoupler
The second input/output terminal of end connection；Machine controller in the input terminal junction chamber of the light-receiving end of 6th optocoupler, and pass through second
Pull-up resistor connects DC power supply；The output end of the light-receiving end of 6th optocoupler is grounded.
Further, the indoor unit current loop communication circuit includes the 7th optocoupler, the 8th optocoupler, the 4th switching tube；
The interior machine controller connects the control terminal of the 4th switching tube, one end ground connection of the switch ways of the 4th switching tube, institute
The output end of the luminous end of the other end the 7th optocoupler of connection of the switch ways of the 4th switching tube is stated, the 7th optocoupler shines
The input terminal at end connects DC power supply；The input terminal of the light-receiving end of 7th optocoupler connects the anode of the second charging capacitor, institute
The cathode for stating the second charging capacitor connects the second input/output terminal, anode the first firewire of connection of second charging capacitor；Institute
The input terminal of the luminous end of output end the 8th optocoupler of connection of the light-receiving end of the 7th optocoupler is stated, the luminous end of the 8th optocoupler
Output end connects the first input/output terminal；The input terminal of the light-receiving end of 8th optocoupler connects DC power supply, the 8th light
The output end of the light-receiving end of coupling is grounded by the second pull down resistor, and machine controller in junction chamber.
Further, the third current loop communication circuit includes the 11st optocoupler, the 12nd optocoupler, the 11st switch
Pipe；The controller connects the control terminal of the 11st switching tube, one end ground connection of the switch ways of the 11st switching tube, institute
State the output end of the luminous end of the other end the 11st optocoupler of connection of the switch ways of the 11st switching tube, the 11st optocoupler
Luminous end input terminal connect DC power supply；The input terminal of the light-receiving end of 11st optocoupler connects third current ring communication
The input terminal of circuit, the output end of the light-receiving end of the 11st optocoupler connect the input terminal of the luminous end of the 12nd optocoupler, institute
State the output end of the output end connection third current loop communication circuit of the luminous end of the 12nd optocoupler；12nd optocoupler by
The input terminal at light end connects controller, and connects DC power supply by third pull-up resistor；The light-receiving end of 12nd optocoupler
Output end ground connection.
Further, the 4th current loop communication circuit includes the 13rd optocoupler, the 14th optocoupler, the 12nd switch
Pipe；The controller connects the control terminal of the 12nd switching tube, one end ground connection of the switch ways of the 12nd switching tube, institute
State the output end of the luminous end of the other end the 13rd optocoupler of connection of the switch ways of the 12nd switching tube, the 13rd optocoupler
Luminous end input terminal connect DC power supply；The input terminal of the light-receiving end of 13rd optocoupler connects third charging capacitor
Anode, the cathode of the third charging capacitor connects the input terminal of the 4th current loop communication circuit, the third charging capacitor
Anode connection the second firewire；The output end of the light-receiving end of 13rd optocoupler connects the input of the luminous end of the 14th optocoupler
End, the output end of the luminous end of the 14th optocoupler connect the output end of the 4th current loop communication circuit；14th light
The input terminal of the light-receiving end of coupling connects DC power supply, and the output end of the light-receiving end of the 14th optocoupler passes through third pull down resistor
Ground connection, and connect controller.
Further, the outdoor unit current loop communication circuit is opened including the 15th optocoupler, the 16th optocoupler, the 13rd
Guan Guan；The control terminal of the 13rd switching tube of the outdoor controller connection, the one of the switch ways of the 13rd switching tube
End ground connection, the other end of the switch ways of the 13rd switching tube connects the output end of the luminous end of the 15th optocoupler, described
The input terminal of the luminous end of 15th optocoupler connects DC power supply；The input terminal connection the 4th of the light-receiving end of 15th optocoupler
The cathode of the anode of charging capacitor, the 4th charging capacitor connects the 4th input/output terminal, and the 4th charging capacitor is just
Pole connects the second firewire；The output end of the light-receiving end of 15th optocoupler connects the input terminal of the luminous end of the 16th optocoupler,
The output end of the luminous end of 16th optocoupler connects third input/output terminal；The input of the light-receiving end of 16th optocoupler
End connection outdoor controller, and DC power supply is connected by the 4th pull-up resistor；The light-receiving end of 16th optocoupler it is defeated
Outlet ground connection.
Further, the outdoor unit current loop communication circuit is opened including the 17th optocoupler, the 18th optocoupler, the 14th
Guan Guan；The control terminal of the 14th switching tube of the outdoor controller connection, the one of the switch ways of the 14th switching tube
End ground connection, the other end of the switch ways of the 14th switching tube connects the output end of the luminous end of the 18th optocoupler, described
The input terminal of the luminous end of 18th optocoupler connects DC power supply；The input terminal of the light-receiving end of 18th optocoupler connects third
Input/output terminal, the output end of the light-receiving end of the 18th optocoupler connects the input terminal of the luminous end of the 17th optocoupler, described
The output end of the luminous end of 17th optocoupler connects the 4th input/output terminal；The input terminal of the light-receiving end of 17th optocoupler connects
DC power supply is connect, the output end of the light-receiving end of the 17th optocoupler is grounded by the 4th pull down resistor, and connects outdoor unit control
Device processed.
Compared with prior art, the advantages and positive effects of the utility model are as follows: the air-conditioning control panel of the utility model is examined
Tooling is surveyed, controller controls the first relay coil and do not power on, the first current loop communication circuit and indoor unit current ring communication electricity
Road carries out communication test, and controller knows air conditioner indoor unit control by the voltage signal of collected first current loop communication circuit
Whether making sheet communicates normally with the first current loop communication circuit, and is sent to display screen and shows；Controller controls the first relay
Coil powers on, and is switched to the second current loop communication circuit and indoor unit current loop communication circuit carries out communication test, controller is logical
The voltage signal for crossing collected second current loop communication circuit knows air conditioner indoor unit control panel and the second current ring communication electricity
Whether road communicates normally, and is sent to display screen and shows；Controller controls the second relay coil and does not power on, and third electric current loop is logical
Believe that circuit and outdoor unit current loop communication circuit carry out communication test, controller passes through collected third current loop communication circuit
Voltage signal know whether air conditioner outdoor unit control panel communicates normally with third current loop communication circuit, and be sent to display screen
Display；Controller controls the second relay coil and powers on, and is switched to the 4th current loop communication circuit and outdoor unit current ring communication
Circuit carries out communication test, and controller knows air-conditioner outdoor unit by the voltage signal of collected 4th current loop communication circuit
Whether control panel communicates normally with the 4th current loop communication circuit, and is sent to display screen and shows；After-sales staff passes through display screen
You can learn that whether indoor unit control panel, outdoor unit control panel communicate normally, in order to after-sales staff on-call maintenance or replacement, solution
It has determined the inconvenient problem of indoor unit control panel, the detection of outdoor unit control panel；Moreover, after-sales staff only needs to will test tooling and room
Interior machine control panel connect the first firewire, the first zero curve, the first communication line can be detected indoor unit control panel whether communicate it is normal,
It only needs will test tooling and outdoor unit control panel connects the second firewire, the second zero curve, the second communication line and can be detected outdoor
Whether machine control panel communicates normally, easily operated without complicated setting, reduces detection difficulty after sale and cost.
After the detailed description of the utility model embodiment is read in conjunction with the figure, other features and advantages of the utility model
It will become clearer.
Detailed description of the invention
Fig. 1 is the connection block diagram of air-conditioning control panel detecting tool and air-conditioning control panel that the utility model is proposed；
Fig. 2 is a kind of circuit diagram for embodiment that detecting tool is connect with indoor unit control panel in Fig. 1；
Fig. 3 is the circuit diagram for another embodiment that detecting tool is connect with indoor unit control panel in Fig. 1；
Fig. 4 is the circuit diagram for the another embodiment that detecting tool is connect with indoor unit control panel in Fig. 1；
Fig. 5 is the circuit diagram for another embodiment that detecting tool is connect with indoor unit control panel in Fig. 1；
Fig. 6 is a kind of circuit diagram for embodiment that detecting tool is connect with outdoor unit control panel in Fig. 1；
Fig. 7 is the circuit diagram for another embodiment that detecting tool is connect with outdoor unit control panel in Fig. 1；
Fig. 8 is the circuit diagram for the another embodiment that detecting tool is connect with outdoor unit control panel in Fig. 1；
Fig. 9 is the circuit diagram for another embodiment that detecting tool is connect with outdoor unit control panel in Fig. 1.
Specific embodiment
Specific embodiment of the present utility model is described in more detail with reference to the accompanying drawing.
The air-conditioning control panel detecting tool of the present embodiment, air-conditioning control panel include indoor unit control panel and outdoor unit control
Plate, detecting tool is connect with indoor unit control panel and outdoor unit control panel respectively, shown in Figure 1.Indoor unit control panel is main
Including indoor machine controller, indoor unit current loop communication circuit, indoor unit current loop communication circuit includes two input/output terminals:
First input/output terminal IO1, the second input/output terminal IO2；First input/output terminal IO1 connection the first communication line C1, second is defeated
Enter output end IO2 the first zero curve of connection N1；The on-off of machine current loop communication circuit in indoor machine controller control room.Outdoor unit control
Making sheet mainly includes outdoor controller, outdoor unit current loop communication circuit, and outdoor unit current loop communication circuit includes two defeated
Enter output end: third input/output terminal IO3, the 4th input/output terminal IO4；Third input/output terminal IO3 the second communication line of connection
C2, the 4th input/output terminal IO4 the second zero curve of connection N2；The outer machine current loop communication circuit of outdoor controller control room leads to
It is disconnected.
Detecting tool mainly include controller, display screen, the first current loop communication circuit, the second current loop communication circuit,
Third current loop communication circuit, the 4th current loop communication circuit, the first relay K1, the second relay K3.
First current loop communication circuit and the second current loop communication circuit respectively include input terminal and output end；First electric current
Input terminal IN1 connection the first zero curve N1 of ring telecommunication circuit, the output end OUT1 connection of the first current loop communication circuit
One relay K1 it is normally closed/open stationary contact, input terminal IN2 the first relay of connection K1's of the second current loop communication circuit is normal
Opening/closing stationary contact, output end OUT2 connection the first zero curve N1's, the first relay K1 of the second current loop communication circuit is dynamic
Contact connects the first communication line C1；Whether the coil that controller controls the first relay K1 powers on；Controller controls respectively
The on-off of first current loop communication circuit, the second current loop communication circuit；Controller acquire respectively the first current loop communication circuit,
The voltage signal of second current loop communication circuit, and display screen is controlled according to collected voltage signal and is shown, institute referring to fig. 2
Show.
Third current loop communication circuit and the 4th current loop communication circuit respectively include input terminal and output end；Third electric current
Output end OUT3 connection the second zero curve N2 of ring telecommunication circuit, the input terminal IN3 connection of third current loop communication circuit
Two relay K3 it is normally closed/open stationary contact, output end OUT4 the second relay of connection K3's of the 4th current loop communication circuit is normal
Opening/closing stationary contact, input terminal IN14 connection the second zero curve N2's, the second relay K3 of the 4th current loop communication circuit is dynamic
Contact connects the second communication line C2；Whether the coil that controller controls the second relay K3 powers on；Controller controls respectively
The on-off of third current loop communication circuit, the 4th current loop communication circuit；Controller acquire respectively third current loop communication circuit,
The voltage signal of 4th current loop communication circuit, and display screen is controlled according to collected voltage signal and is shown, referring to Fig. 6 institute
Show.
In the present embodiment, the normally closed stationary contact of output end OUT1 the first relay of connection K1 of the first current loop communication circuit
Point, the normally opened stationary contact of input terminal IN2 the first relay of connection K1 of the second current loop communication circuit.In the present embodiment,
The normally closed stationary contact of input terminal IN3 the second relay of connection K3 of three current loop communication circuits, the 4th current loop communication circuit
The normally opened stationary contact of output end OUT4 the second relay of connection K3.
The test process of detecting tool and indoor unit control panel are as follows:
Machine current loop communication circuit is connected in indoor machine controller control room, and controller controls the first current ring communication electricity
Road, the conducting of the second current loop communication circuit, the coil of the first relay K1 do not power on, the normally closed stationary contact of the first relay K1 with
Movable contact connection, at this point, input terminal IN1 connection the first zero curve N1 of the first current loop communication circuit, output end OUT1 is through first
Normally closed stationary contact, the movable contact of relay K1 connects the first communication line C1；First input of indoor unit current loop communication circuit is defeated
Outlet IO1 the first communication line of connection C1, second input/output terminal IO2 the first zero curve of connection N1；Therefore, the first current ring communication electricity
First input and output of the output end OUT1 on road through the first relay K1, the first communication line C1 and indoor unit current loop communication circuit
Hold IO1 connection；The input terminal IN1 of first current loop communication circuit passes through the first zero curve N1 and indoor unit current loop communication circuit
Second input/output terminal IO2 connection.
If the first current loop communication circuit and indoor unit current loop communication circuit form electric current loop, controller is collected
The voltage signal of first current loop communication circuit is to communicate normal level (such as low level)；Then controller controls display screen, mentions
Show that indoor unit control panel communicates normally with the first current loop communication circuit.
If the first current loop communication circuit and indoor unit current loop communication circuit can not form electric current loop, controller acquisition
The voltage signal of the first current loop communication circuit arrived is the level (such as high level) of communication abnormality；Then controller control first after
Electric appliance K1 coil powers on, and the normally opened stationary contact of the first relay K1 is connect with movable contact, at this point, the second current loop communication circuit
Normally opened stationary contact, movable contact of the input terminal IN2 through the first relay K1 connect the first communication line C1, the second current ring communication electricity
Output end OUT2 the first zero curve of connection N1 on road；Therefore, the output end OUT2 of the second current loop communication circuit is through the first zero curve N1
It is connect with the second input/output terminal IO2 of indoor unit current loop communication circuit；The input terminal IN2 of second current loop communication circuit is passed through
First relay K1, the first communication line C1 are connect with the first input/output terminal IO1 of indoor unit current loop communication circuit.
If the second current loop communication circuit and indoor unit current loop communication circuit form electric current loop, controller is collected
The voltage signal of second current loop communication circuit is to communicate normal level (such as high level)；Then controller controls display screen, mentions
Show that indoor unit control panel communicates normally with the second current loop communication circuit.
If the second current loop communication circuit and indoor unit current loop communication circuit can not form electric current loop, controller acquisition
The voltage signal of the second current loop communication circuit arrived is the level (such as low level) of communication abnormality；Then controller control display
Screen prompts indoor unit control panel communication abnormality.
The test process of detecting tool and outdoor unit control panel are as follows:
The outer machine current loop communication circuit conducting of outdoor controller control room, controller control third current ring communication electricity
Road, the conducting of the 4th current loop communication circuit, the coil of the second relay K3 do not power on, the normally closed stationary contact of the second relay K3 with
Movable contact connection, at this point, output end OUT3 connection the second zero curve N2 of third current loop communication circuit, input terminal IN3 is through second
Normally closed stationary contact, the movable contact of relay K3 connects the second communication line C2；The third input of outdoor unit current loop communication circuit is defeated
Outlet IO3 the second communication line of connection C2, the 4th input/output terminal IO4 the second zero curve of connection N2；Therefore, third current ring communication electricity
Third input and output of the input terminal IN3 on road through the second relay K3, the second communication line C2 and outdoor unit current loop communication circuit
Hold IO3 connection；The output end OUT3 of third current loop communication circuit passes through the second zero curve N2 and outdoor unit current loop communication circuit
The 4th input/output terminal IO4 connection.
If third current loop communication circuit and outdoor unit current loop communication circuit form electric current loop, controller is collected
The voltage signal of third current loop communication circuit is to communicate normal level (such as low level)；Then controller controls display screen, mentions
Show that outdoor unit control panel communicates normally with third current loop communication circuit.
If third current loop communication circuit and outdoor unit current loop communication circuit can not form electric current loop, controller acquisition
The voltage signal of the third current loop communication circuit arrived is the level (such as high level) of communication abnormality；Then controller control second after
Electric appliance K3 coil powers on, and the normally opened stationary contact of the second relay K3 is connect with movable contact, at this point, the 4th current loop communication circuit
Normally opened stationary contact, movable contact of the output end OUT4 through the second relay K3 connect the second communication line C2, the 4th current ring communication electricity
Input terminal IN14 the second zero curve of connection N2 on road；Therefore, the input terminal IN14 of the 4th current loop communication circuit is through the second zero curve N2
It is connect with the 4th input/output terminal IO4 of outdoor unit current loop communication circuit；The output end OUT4 of 4th current loop communication circuit
It is connect through the second relay K3, the second communication line C2 with the third input/output terminal IO3 of outdoor unit current loop communication circuit.
If the 4th current loop communication circuit and outdoor unit current loop communication circuit form electric current loop, controller is collected
The voltage signal of 4th current loop communication circuit is to communicate normal level (such as high level)；Then controller controls display screen, mentions
Show that outdoor unit control panel communicates normally with the 4th current loop communication circuit.
If the 4th current loop communication circuit and outdoor unit current loop communication circuit can not form electric current loop, controller acquisition
The voltage signal of the 4th current loop communication circuit arrived is the level (such as low level) of communication abnormality；Then controller control display
Screen prompts outdoor unit control panel communication abnormality.
The air-conditioning control panel detecting tool of the present embodiment, controller control the first relay coil and do not power on, the first electric current
Ring telecommunication circuit and indoor unit current loop communication circuit carry out communication test, and controller passes through collected first current ring communication
The voltage signal of circuit knows whether air conditioner indoor unit control panel communicates normally with the first current loop communication circuit, and is sent to aobvious
Display screen is shown；Controller controls the first relay coil and powers on, and is switched to the second current loop communication circuit and indoor unit electric current loop
Telecommunication circuit carries out communication test, and controller knows air conditioning chamber by the voltage signal of collected second current loop communication circuit
Whether interior machine control panel communicates normally with the second current loop communication circuit, and is sent to display screen and shows；Controller control second
Relay coil does not power on, and third current loop communication circuit and outdoor unit current loop communication circuit carry out communication test, controller
Air conditioner outdoor unit control panel and third current ring communication are known by the voltage signal of collected third current loop communication circuit
Whether circuit communicates normally, and is sent to display screen and shows；Controller controls the second relay coil and powers on, and is switched to the 4th electricity
It flows ring telecommunication circuit and outdoor unit current loop communication circuit carries out communication test, controller is logical by collected 4th electric current loop
The voltage signal of letter circuit knows whether air conditioner outdoor unit control panel communicates normally with the 4th current loop communication circuit, and is sent to
Display screen is shown；After-sales staff pass through display screen you can learn that indoor unit control panel, outdoor unit control panel whether communicate normally, with
Convenient for after-sales staff on-call maintenance or replacement, solve the problems, such as that indoor unit control panel, the detection of outdoor unit control panel are inconvenient；And
And after-sales staff only needs will test tooling and indoor unit control panel connects the first firewire, the first zero curve, the first communication line i.e.
Detectable indoor unit control panel whether communicate it is normal, only need will test tooling and outdoor unit control panel connect the second firewire,
Second zero curve, the second communication line can be detected whether outdoor unit control panel communicates normally, easily operated without complicated setting, drop
Low detection difficulty and cost after sale.
The air-conditioning control panel detecting tool of the present embodiment selects the first electric current by the first relay of control whether powering on
Ring telecommunication circuit or the second current loop communication circuit and indoor unit current loop communication circuit carry out communication test, pass through control the
Two relays select third current loop communication circuit or the 4th current loop communication circuit and outdoor unit electric current loop whether powering on
Telecommunication circuit carries out communication test, is not necessarily to manual setting, no setting is required, and toggle switch is selected, and then the shell of detecting tool
Without reserving position of opening for toggle switch, wiring hole only need to be reserved, highly-safe, appearance is good.
In the present embodiment, the first current loop communication circuit mainly includes the first optocoupler IC1, the second optocoupler IC2, first opens
Pipe N1 is closed, it is shown in Figure 2.The control terminal of the pin 4-28-TX connection first switch tube N1 of controller, the one or three pole N1 pipe
One end of switch ways is grounded, and the other end of the switch ways of first switch tube N1 passes through the first optocoupler of resistance R26 connection IC1's
The input terminal of the output end of luminous end, the luminous end of the first optocoupler IC1 connects DC power supply；The light-receiving end of first optocoupler IC1
Input terminal connects the anode of the first charging capacitor E1, and the cathode of the first charging capacitor E1 connects the defeated of the first current loop communication circuit
Enter and holds IN1, the first firewire L1 of anode connection of the first charging capacitor E1；The output end connection the of the light-receiving end of first optocoupler IC1
The output end of the input terminal of the luminous end of two optocoupler IC2, the luminous end of the second optocoupler IC2 passes through the first electric current loop of resistance R5 connection
The output end OUT1 of telecommunication circuit；The input terminal of the light-receiving end of second optocoupler IC2 passes through the pin 4- of resistance R24 connection controller
The input terminal of 29-RX, the light-receiving end of the second optocoupler IC2 pass through the first pull-up resistor R23 connection DC power supply；Second optocoupler IC2
Light-receiving end output end ground connection.
To the control terminal of first switch tube N1, first switch tube N1's opens the pin 4-28-TX output high level of controller
Access conducting is closed, the luminous end of the first optocoupler IC1 shines.If the light-receiving end of the second optocoupler IC2 turns off, the pin of controller
4-29-RX receives high level signal, illustrates indoor unit control panel communication abnormality.If the light-receiving end of the second optocoupler IC2 is connected,
Then the pin 4-29-RX of controller receives low level signal, illustrates that indoor unit control board communications are normal.That is, controller draws
Foot 4-29-RX is used to acquire the voltage signal of the first current loop communication circuit, and according to the low and high level control display received
Whether screen display indoor unit control panel is normal.The first current ring communication is constructed by the first optocoupler, the second optocoupler, first switch tube
Circuit, circuit structure is simple, be easy to implement, cost is relatively low, and easily controllable.
In the present embodiment, the second current loop communication circuit mainly includes third optocoupler IC3, the 4th optocoupler IC4, second opens
Pipe N2 is closed, it is shown in Figure 2.The control terminal of the pin 4-27-TX0 connection second switch N2 of controller, second switch N2
Switch ways one end ground connection, the other ends of the switch ways of second switch N2 connects the luminous end of the 4th optocoupler IC4
The input terminal of output end, the IC4 luminous end of the 4th optocoupler passes through resistance R21 connection DC power supply；The light of 4th optocoupler IC4
The input terminal at end passes through the input terminal IN2 of the second current loop communication circuit of resistance R5 connection；The light-receiving end of 4th optocoupler IC4 it is defeated
Outlet connects the input terminal of the luminous end of third optocoupler IC3, and the output end of the luminous end of third optocoupler IC3 connects the second electric current loop
The output end OUT2 of telecommunication circuit；The input terminal of the light-receiving end of third optocoupler IC3 connects DC power supply, third optocoupler IC3 by
The output end at light end is grounded by the first pull down resistor R22, and the output end of the light-receiving end of third optocoupler IC3 is connected by resistance R25
Meet the pin 4-26-RX0 of controller.
To the control terminal of second switch N2, second switch N2's opens the pin 4-27-TX0 output high level of controller
Access conducting is closed, the luminous end of the 4th optocoupler IC4 shines.If the light-receiving end of third optocoupler IC3 turns off, the pin of controller
4-26-RX0 receives low level signal, illustrates indoor unit control panel communication abnormality.If the light-receiving end of third optocoupler IC3 is led
Logical, then the pin 4-26-RX0 of controller receives high level signal, illustrates that indoor unit control board communications are normal.That is, controller
Pin 4-26-RX0 be used to acquire the voltage signal of the second current loop communication circuit, and according to the low and high level control received
Display screen shows whether indoor unit control panel is normal.The second electric current loop is constructed by third optocoupler, the 4th optocoupler, second switch
Telecommunication circuit, circuit structure is simple, be easy to implement, cost is relatively low, and easily controllable.
It is shown in Figure 2, the anode of the cathode connection clamp diode D7 of the first charging capacitor E1, the first charging capacitor E1
Anode connection clamp diode D7 cathode.Clamp diode D7 plays a protective role, and powers in the first relay K1, powers off
When switching, i.e. when the first current loop communication circuit and the second current loop communication circuit switch, there are electric energy impact, clamper two in circuit
The effect of pole pipe D7 is to absorb impact, protects the first charging capacitor E1.
The first divider resistance R3 is connected between the anode and cathode of the first charging capacitor E1.First divider resistance R3 tool
There is partial pressure effect, avoids the voltage of the first charging capacitor E1 from filling too high.
There are two types of circuit structures for the indoor unit current loop communication circuit of indoor unit control panel.
The circuit structure one of indoor unit current loop communication circuit: indoor unit current loop communication circuit mainly includes the 5th optocoupler
IC5, the 6th optocoupler IC6, third switching tube N3, referring to fig. 2, shown in Fig. 3.The pin 2-1-COM-TX connection of indoor machine controller
The control terminal of third switching tube N3, one end ground connection of the switch ways of third switching tube N3, the switch ways of third switching tube N3
Output end of the other end by the luminous end of the 5th optocoupler IC5 of resistance R59 connection, the input of the luminous end of the 5th optocoupler IC5
End connection DC power supply；The input terminal of the light-receiving end of 5th optocoupler IC5 connects the first input/output terminal IO1, the 5th optocoupler IC5's
The output end of light-receiving end connects the input terminal of the luminous end of the 6th optocoupler IC6, and the output end of the luminous end of the 6th optocoupler IC6 passes through
Resistance R63 the second input/output terminal of connection IO2；The input terminal of the light-receiving end of 6th optocoupler IC6 passes through resistance R58 connection indoor unit
The input terminal of the pin 2-2-COM-RX of controller, the light-receiving end of the 6th optocoupler IC6 pass through the second pull-up resistor R57 connection direct current
Power supply；The output end of the light-receiving end of 6th optocoupler IC6 is grounded.
The pin 2-1-COM-TX of indoor machine controller exports the control terminal of high level to third switching tube N3, third switch
The switch ways of pipe N3 are connected, and the luminous end of the 5th optocoupler IC5 shines.It is indoor if the light-receiving end of the 6th optocoupler IC6 turns off
The pin 2-2-COM-RX of machine controller receives high level signal.If the light-receiving end of the 6th optocoupler IC6 is connected, indoor unit
The pin 2-2-COM-RX of controller receives low level signal.Room is constructed by the 5th optocoupler, the 6th optocoupler, third switching tube
Interior machine current loop communication circuit, circuit structure is simple, be easy to implement, cost is relatively low, and easily controllable.
The circuit structure two of indoor unit current loop communication circuit: indoor unit current loop communication circuit mainly includes the 7th optocoupler
IC7, the 8th optocoupler IC8, the 4th switching tube N4 etc.；Referring to fig. 4, shown in Fig. 5.The pin 2-1-TX connection of indoor machine controller
The control terminal of four switching tube N4, one end ground connection of the switch ways of the four or three pole N4 pipe, the switch ways of the 4th switching tube N4
The other end connects the output end of the luminous end of the 7th optocoupler IC7, and the input terminal of the luminous end of the 7th optocoupler IC7 is connected by resistance R4
Connect DC power supply；The input terminal of the light-receiving end of 7th optocoupler IC4 connects the anode of the second charging capacitor E2, the second charging capacitor E2
Cathode connect the second input/output terminal IO2, the second charging capacitor E2 anode connection the first firewire L1；7th optocoupler IC7's
The output end of light-receiving end connects the input terminal of the luminous end of the 8th optocoupler IC8, and the output end of the luminous end of the 8th optocoupler IC8 passes through
Resistance R9 the first input/output terminal of connection IO1；The input terminal of the light-receiving end of 8th optocoupler IC8 connects DC power supply, the 8th optocoupler
The output end of the light-receiving end of IC8 is grounded by the second pull down resistor R6, and the output end of the light-receiving end of the 8th optocoupler IC8 passes through resistance
The pin 2-2-RX of machine controller in R11 junction chamber.
Control terminal of the pin 2-1-TX output high level of indoor machine controller to the 4th switching tube N4, the 4th switching tube N4
Switch ways conducting, the luminous end of the 7th optocoupler IC7 shines.If the light-receiving end of the 8th optocoupler IC8 turns off, indoor unit control
The pin 2-2-RX of device processed receives low level signal.If the light-receiving end of the 8th optocoupler IC8 is connected, indoor machine controller
Pin 2-2-RX receives high level signal.Indoor unit electric current loop is constructed by the 7th optocoupler, the 8th optocoupler, the 4th switching tube to lead to
Believe circuit, circuit structure is simple, be easy to implement, cost is relatively low, and easily controllable.
The anode of the cathode connection zener diode ZD1 of second charging capacitor E2, the anode connection of the second charging capacitor E2
The cathode of zener diode ZD1.Zener diode ZD1 plays pressure stabilization function, guarantees the voltage of the second charging capacitor E2, avoids the
The voltage fluctuation of two charging capacitor E2.
The second divider resistance R83 is connected between the anode and cathode of the second charging capacitor E2.Second divider resistance R83
With partial pressure effect, the voltage of the second charging capacitor E2 is avoided to fill too high.
Hair is in series on the output end of the luminous end of the 6th optocoupler IC6 and the connection line of the second input/output terminal IO2
Whether optical diode LED2, being used to indicate on electric current loop has electric current；LED2 is bright, illustrates have electric current to flow through, and indoor unit control panel is logical
Letter is normal.
In the following, detecting tool and the specific detection process of indoor unit control panel are described in detail.
One, assume that indoor unit current loop communication circuit uses its circuit structure one, referring to fig. 2, shown in Fig. 3:
(1) controller controls the first relay K1 coil and powers on, and selects the second current loop communication circuit, shown in Figure 3；
The pin 4-27-TX0 of controller exports high level, and the luminous end of the 4th optocoupler IC4 shines.The pin 2-1- of indoor machine controller
COM-TX exports high level, the switch ways conducting of third switching tube N3, and the luminous end of the 5th optocoupler IC5 shines.
The output end OUT2 of second current loop communication circuit through the first zero curve N1 and indoor unit current loop communication circuit the
Two input/output terminal IO2 connections；The input terminal IN2 of second current loop communication circuit is through the first relay K1, the first communication line C1
It is connect with the first input/output terminal IO1 of indoor unit current loop communication circuit, it is shown in Figure 3；Second current loop communication circuit
Electric current loop can not be formed with indoor unit current loop communication circuit.
The light-receiving end of third optocoupler IC3 turns off, and the pin 4-26-RX0 of controller receives low level signal, illustrates interior
Machine control panel and the second current loop communication circuit communication abnormality, and shown by display screen, prompt after-sales staff.
The light-receiving end of 6th optocoupler IC6 turns off, and the pin 2-2-COM-RX of indoor machine controller receives high level signal,
Illustrate indoor unit control panel and the second current loop communication circuit communication abnormality.
(2) controller controls the first relay K1 coil blackout, selects the first current loop communication circuit, shown in Figure 2；
The pin 4-28-TX of controller exports high level, the switch ways conducting of first switch tube N1, the luminous end of the first optocoupler IC1
It shines.The pin 2-1-COM-TX of indoor machine controller exports high level, the switch ways conducting of third switching tube N3, the 5th light
The luminous end of coupling IC5 shines.
The output end OUT1 of first current loop communication circuit is through the first relay K1, the first communication line C1 and indoor unit electric current
First input/output terminal IO1 connection of ring telecommunication circuit；The input terminal IN1 of first current loop communication circuit through the first zero curve N1 with
Second input/output terminal IO2 connection of indoor unit current loop communication circuit；First current loop communication circuit and indoor unit electric current loop
Telecommunication circuit forms electric current loop.The current path of electric current loop are as follows: the anode of the first charging capacitor E1 → first optocoupler IC1 light
Hold the luminous end → R5 → relay of output end OUT1 → first communication line of K1 → first C1 → first input of the → the second optocoupler IC2
Light-receiving end → the 6th optocoupler IC6 luminous end → 2 → resistance of Light-emitting diode LED R63 of the optocoupler IC5 of output end IO1 → the 5th
→ the second zero curve of the input/output terminal IO2 → first N1 → charging capacitor of input terminal IN1 → first E1 cathode.Due in electric current loop
There is electric current, the luminous end of the second optocoupler IC2 shines, and the luminous end of the 6th optocoupler IC6 shines.
Since the luminous end of the second optocoupler IC2 shines, the light-receiving end conducting of the second optocoupler IC2, the pin 4-29- of controller
RX receives low level signal, illustrates that indoor unit control panel communicates normally with the first current loop communication circuit, and pass through display screen
Display prompts after-sales staff.
Since the luminous end of the 6th optocoupler IC6 shines, the light-receiving end conducting of the 6th optocoupler IC6, indoor machine controller draws
Foot 2-2-COM-RX receives low level signal, illustrates that indoor unit control panel communicates normally with the first current loop communication circuit.
Two, assume that indoor unit current loop communication circuit uses its circuit structure two, referring to fig. 4, shown in Fig. 5:
(1) controller controls the first relay K1 coil blackout, selects the first current loop communication circuit, shown in Figure 4；
The pin 4-28-TX of controller exports high level, the switch ways conducting of first switch tube N1, the luminous end of the first optocoupler IC1
It shines.The pin 2-1-TX of indoor machine controller exports high level, the switch ways conducting of the 4th switching tube N4, the 7th optocoupler
The luminous end of IC7 shines.
The output end OUT1 of first current loop communication circuit is through the first relay K1, the first communication line C1 and indoor unit electric current
First input/output terminal IO1 connection of ring telecommunication circuit；The input terminal IN1 of first current loop communication circuit through the first zero curve N1 with
Second input/output terminal IO2 connection of indoor unit current loop communication circuit, it is shown in Figure 4；First current loop communication circuit with
Indoor unit current loop communication circuit can not form electric current loop.
The light-receiving end of second optocoupler IC2 turns off, and the pin 4-29-RX of controller receives high level signal, illustrates interior
Machine control panel and the first current loop communication circuit communication abnormality, and shown by display screen, prompt after-sales staff.
The light-receiving end of 8th optocoupler IC8 turns off, and the pin 2-2-RX of indoor machine controller receives low level signal, explanation
Indoor unit control panel and the first current loop communication circuit communication abnormality.
(2) controller controls the first relay K1 coil and powers on, and selects the second current loop communication circuit, shown in Figure 5；
The pin 4-27-TX0 of controller exports high level, and the luminous end of the 4th optocoupler IC4 shines.The pin 2-1- of indoor machine controller
TX exports high level, the switch ways conducting of the 4th switching tube N4, and the luminous end of the 7th optocoupler IC7 shines.
The output end OUT2 of second current loop communication circuit through the first zero curve N1 and indoor unit current loop communication circuit the
Two input/output terminal IO2 connections；The input terminal IN2 of second current loop communication circuit is through the first relay K1, the first communication line C1
It is connect with the first input/output terminal IO1 of indoor unit current loop communication circuit, it is shown in Figure 5；Second current loop communication circuit
Electric current loop is formed with indoor unit current loop communication circuit.The current path of electric current loop are as follows: anode → the of the second charging capacitor E2
The light-receiving end of seven optocoupler IC7 → the 8th optocoupler IC8 input/output terminal of luminous end → R9 → first communication line of IO1 → first C1 →
First relay K1 → optocoupler IC4 of input terminal IN2 → R8 → the 4th light-receiving end → third optocoupler IC3 luminous end → output end
The cathode of the zero curve of OUT2 → first input/output terminal of N1 → second charging capacitor of IO2 → second E2.Due to having electric current in electric current loop,
The luminous end of third optocoupler IC3 shines, and the luminous end of the 8th optocoupler IC8 shines.
Since the luminous end of third optocoupler IC3 shines, the light-receiving end conducting of third optocoupler IC3, the pin 4-26- of controller
RX0 receives high level signal, illustrates that indoor unit control panel communicates normally with the second current loop communication circuit, and pass through display screen
Display prompts after-sales staff.
Since the luminous end of the 8th optocoupler IC8 shines, the light-receiving end conducting of the 8th optocoupler IC8, indoor machine controller draws
Foot 2-2-RX receives high level signal, illustrates that indoor unit control panel communicates normally with the second current loop communication circuit.
For the ease of the connection of indoor unit control panel and detecting tool, in the present embodiment, it is additionally provided with terminal block CN1,
Terminal block CN1 is separately connected the first firewire L1, the first zero curve N1, the first communication line C1, the first ground wire PE1.Indoor unit control panel
Connect respectively with terminal block CN1 with detecting tool, with realize respectively with the first firewire L1, the first zero curve N1, the first communication line C1,
The connection of first ground wire PE1, and then realize the connection of outdoor unit control panel and detecting tool.
In the present embodiment, third current loop communication circuit mainly include the 11st optocoupler IC11, the 12nd optocoupler IC12,
11st switching tube N11, it is shown in Figure 6.The control terminal of the 11st switching tube N11 of pin 4-35-TX connection of controller, the
One end of the switch ways of one or three pole N11 pipes is grounded, and the other end of the switch ways of the 11st switching tube N11 passes through resistance R28
The output end of the luminous end of the 11st optocoupler IC11 is connected, the input terminal of the luminous end of the 11st optocoupler IC11 connects direct current
Source；The input terminal IN3 of the input terminal connection third current loop communication circuit of the light-receiving end of 11st optocoupler IC11, the 11st light
The output end of the light-receiving end of coupling IC11 connects the input terminal of the luminous end of the 12nd optocoupler IC12, and the 12nd optocoupler IC12's shines
The output end at end passes through the output end OUT3 of resistance R16 connection third current loop communication circuit；The light of 12nd optocoupler IC12
The input terminal at end passes through the pin 4-36-RX of resistance R33 connection controller, and the input terminal of the light-receiving end of the 12nd optocoupler IC12 is logical
Cross third pull-up resistor R27 connection DC power supply；The output end of the light-receiving end of 12nd optocoupler IC12 is grounded.
Control terminal of the pin 4-35-TX output high level of controller to the 11st switching tube N11, the 11st switching tube
The switch ways of N11 are connected, and the luminous end of the 11st optocoupler IC11 shines.If the light-receiving end of the 12nd optocoupler IC12 turns off,
Then the pin 4-36-RX of controller receives high level signal, illustrates outdoor unit control panel communication abnormality.If the 12nd optocoupler
The light-receiving end of IC12 is connected, then the pin 4-36-RX of controller receives low level signal, is illustrating outdoor unit control board communications just
Often.That is, the pin 4-36-RX of controller is used to acquire the voltage signal of third current loop communication circuit, and according to receiving
Low and high level controls display screen and shows whether outdoor unit control panel is normal.It is opened by the 11st optocoupler, the 12nd optocoupler, the 11st
It closes pipe and constructs third current loop communication circuit, circuit structure is simple, be easy to implement, cost is relatively low, and easily controllable.
In the present embodiment, the 4th current loop communication circuit mainly include the 13rd optocoupler IC13, the 14th optocoupler IC14,
12nd switching tube N12, it is shown in Figure 6.The control terminal of the 12nd switching tube N12 of pin 4-37-TX1 connection of controller,
One end of the switch ways of 12nd switching tube N12 is grounded, the other end connection the tenth of the switch ways of the 12nd switching tube N12
The input terminal of the output end of the luminous end of three optocoupler IC13, the IC13 luminous end of the 13rd optocoupler passes through resistance R32 connection direct current
Power supply；The anode of the input terminal connection third charging capacitor E3 of the light-receiving end of 13rd optocoupler IC13, third charging capacitor E3's
Cathode connects the input terminal IN14 of the 4th current loop communication circuit, the second firewire L2 of anode connection of third charging capacitor E3；The
The output end of the light-receiving end of 13 optocoupler IC13 connects the input terminal of the luminous end of the 14th optocoupler IC14, the 14th optocoupler IC14
Luminous end output end connect the 4th current loop communication circuit output end OUT4；The light-receiving end of 14th optocoupler IC14 it is defeated
Entering end connection DC power supply, the output end of the light-receiving end of the 14th optocoupler IC14 is grounded by third pull down resistor R29, and the 14th
The output end of the light-receiving end of optocoupler IC14 passes through the pin 4-38-RX1 of resistance R31 connection controller.
Control terminal of the pin 4-37-TX1 output high level of controller to the 12nd switching tube N12, the 12nd switching tube
The switch ways of N12 are connected, and the luminous end of the 13rd optocoupler IC13 shines.If the light-receiving end of the 14th optocoupler IC14 turns off,
Then the pin 4-38-RX1 of controller receives low level signal, illustrates outdoor unit control panel communication abnormality.If the 14th light
The light-receiving end of coupling IC14 is connected, then the pin 4-38-RX1 of controller receives high level signal, illustrates that outdoor unit control panel is logical
Letter is normal.That is, the pin 4-38-RX1 of controller is used to acquire the voltage signal of the 4th current loop communication circuit, and according to reception
The low and high level control display screen arrived shows whether outdoor unit control panel is normal.Pass through the 13rd optocoupler, the 14th optocoupler, the tenth
Two switching tubes construct the 4th current loop communication circuit, and circuit structure is simple, be easy to implement, cost is relatively low, and easily controllable.
The anode of the cathode connection zener diode ZD1 of third charging capacitor E3, the anode connection of third charging capacitor E3
The cathode of zener diode ZD1.Zener diode ZD1 plays pressure stabilization function, guarantees the voltage of third charging capacitor E3, avoids the
The voltage fluctuation of three charging capacitor E3.
The first divider resistance R13 is connected between the anode and cathode of third charging capacitor E3.First divider resistance R13
With partial pressure effect, the voltage of third charging capacitor E3 is avoided to fill too high.
There are two types of circuit structures for the outdoor unit current loop communication circuit of outdoor unit control panel.
The circuit structure one of outdoor unit current loop communication circuit: outdoor unit current loop communication circuit mainly includes the 15th light
Coupling IC15, the 16th optocoupler IC16, the 13rd switching tube N13, referring to shown in Fig. 6, Fig. 7.The pin 1_17_ of outdoor controller
The control terminal of the 13rd switching tube N13 of TX_insider connection, one end ground connection of the switch ways of the 13rd switching tube N13, the
The other end of the switch ways of 13 switching tube N13 passes through the output end of the luminous end of the 15th optocoupler IC15 of resistance R22 connection,
The input terminal of the luminous end of 15th optocoupler IC15 connects DC power supply；The input terminal of the light-receiving end of 15th optocoupler IC15 connects
The cathode of the anode of 4th charging capacitor E4, the 4th charging capacitor E4 connects the 4th input/output terminal IO4, the 4th charging capacitor E4
Anode connection the second firewire；The output end of the light-receiving end of 15th optocoupler IC15 connects the luminous end of the 16th optocoupler IC16
The output end of input terminal, the luminous end of the 16th optocoupler IC16 connects third input/output terminal IO3 by resistance R24, R20；The
The input terminal of the light-receiving end of 16 optocoupler IC16 passes through the pin 1_14_RX_insider of resistance R30 connection outdoor controller,
The input terminal of the light-receiving end of 16th optocoupler IC16 passes through the 4th pull-up resistor R26 connection DC power supply；16th optocoupler IC16
Light-receiving end output end ground connection.
The pin 1_17_TX_insider of outdoor controller exports the control terminal of high level to the 13rd switching tube N13,
The switch ways of 13rd switching tube N13 are connected, and the luminous end of the 15th optocoupler IC15 shines.If the 16th optocoupler IC16's
Light-receiving end shutdown, then the pin 1_14_RX_insider of outdoor controller receives high level signal.If the 16th optocoupler
The light-receiving end of IC16 is connected, then the pin 1_14_RX_insider of outdoor controller receives low level signal.Pass through the tenth
Five optocouplers, the 16th optocoupler, the 13rd switching tube construct outdoor unit current loop communication circuit, circuit structure is simple, be easy to implement,
Cost is relatively low, and easily controllable.
The circuit structure two of outdoor unit current loop communication circuit: outdoor unit current loop communication circuit mainly includes the 17th light
Coupling IC17, the 18th optocoupler IC18, the 14th switching tube N14 etc.；Referring to shown in Fig. 8, Fig. 9.The pin 2- of outdoor controller
The control terminal of the 14th switching tube N14 of 26-COMM-TX connection, one end ground connection of the switch ways of the four or three pole N14 pipe, the tenth
The other end of the switch ways of four switching tube N14 connects the output end of the luminous end of the 18th optocoupler IC18, the 18th optocoupler
The input terminal of the luminous end of IC18 passes through resistance R3 connection DC power supply；The input terminal of the light-receiving end of 18th optocoupler IC18 connects
Third input/output terminal IO3, the output end of the light-receiving end of the 18th optocoupler IC18 connect the luminous end of the 17th optocoupler IC17
The output end of input terminal, the luminous end of the 17th optocoupler IC17 connects the 4th input/output terminal IO4；17th optocoupler IC17 by
The input terminal at light end connects DC power supply, and the output end of the light-receiving end of the 17th optocoupler IC17 is connect by the 4th pull down resistor R5
Ground, the output end of the light-receiving end of the 17th optocoupler IC17 pass through the pin 2-27-COMM- of resistance R8 connection outdoor controller
RX。
The pin 2-26-COMM-TX of outdoor controller exports the control terminal of high level to the 14th switching tube N14, the
The switch ways of 14 switching tube N14 are connected, and the luminous end of the 18th optocoupler IC18 shines.If the 17th optocoupler IC17 by
The shutdown of light end, then the pin 2-27-COMM-RX of outdoor controller receives low level signal.If the 18th optocoupler IC18
Light-receiving end conducting, then the pin 2-27-COMM-RX of outdoor controller receives high level signal.By the 17th optocoupler,
18th optocoupler, the 14th switching tube construct outdoor unit current loop communication circuit, circuit structure is simple, be easy to implement, cost compared with
It is low and easily controllable.
The anode of the cathode connection clamp diode D8 of 4th charging capacitor E4, the positive connection clamp of the 4th charging capacitor E4
The cathode of position diode D8.Clamp diode D8 plays a protective role, when powering in the second relay K3, powering off switching, i.e., the
When three current loop communication circuits and the 4th current loop communication circuit switch, there are electric energy impact, the work of clamp diode D8 in circuit
With being to absorb impact, the 4th charging capacitor E4 is protected.
The second divider resistance R11 is connected between the anode and cathode of the 4th charging capacitor E4.Second divider resistance R11
With partial pressure effect, the voltage of the 4th charging capacitor E4 is avoided to fill too high.Certainly, R15, R14 also effect having the same.
In the following, detecting tool and the specific detection process of outdoor unit control panel are described in detail.
One, assume that outdoor unit current loop communication circuit uses its circuit structure one, referring to shown in Fig. 6, Fig. 7:
(1) controller controls the second relay K3 coil and powers on, and selects the 4th current loop communication circuit, shown in Figure 7；
The pin 4-37-TX1 of controller exports high level, and the luminous end of the 13rd optocoupler IC13 shines.The pin of outdoor controller
1_17_TX_insider exports high level, and the switch ways conducting of the 13rd switching tube N13, the 15th optocoupler IC15's shines
End shines.
The input terminal IN4 of 4th current loop communication circuit is through the second zero curve N2 and the 4th of outdoor unit current loop communication circuit the
Input/output terminal IO4 connection；The output end OUT4 of 4th current loop communication circuit through the second relay K3, the second communication line C2 with
The third input/output terminal IO3 connection of outdoor unit current loop communication circuit, it is shown in Figure 7；4th current loop communication circuit with
Outdoor unit current loop communication circuit can not form electric current loop.
The light-receiving end of 14th optocoupler IC14 turns off, and the pin 4-38-RX1 of controller receives low level signal, explanation
Outdoor unit control panel and the 4th current loop communication circuit communication abnormality, and shown by display screen, prompt after-sales staff.
The light-receiving end of 16th optocoupler IC16 turns off, and the pin 1_14_RX_insider of outdoor controller receives height
Level signal illustrates outdoor unit control panel and the 4th current loop communication circuit communication abnormality.
(2) controller controls the second relay K3 coil blackout, selects third current loop communication circuit, shown in Figure 6；
The pin 4-35-TX of controller exports high level, and the switch ways of the 11st switching tube N11 are connected, the 11st optocoupler IC11's
Luminous end shines.The pin 1_17_TX_insider of outdoor controller exports high level, the switch of the 13rd switching tube N13
The luminous end of access conducting, the 15th optocoupler IC15 shines.
The input terminal IN3 of third current loop communication circuit is through the second relay K3, the second communication line C2 and outdoor unit electric current
The third input/output terminal IO3 connection of ring telecommunication circuit；The output end OUT3 of third current loop communication circuit is through the second zero curve N2
It is connect with the 4th input/output terminal IO4 of outdoor unit current loop communication circuit；Third current loop communication circuit and outdoor unit electric current
Ring telecommunication circuit forms electric current loop.The current path of electric current loop are as follows: the anode of the 4th charging capacitor E4 → the 15th optocoupler IC15
Light-receiving end → the 16th optocoupler IC16 luminous end → R20, R24 → third input/output terminal communication line of IO3 → second C2 →
Second relay K3 → optocoupler IC11 of input terminal IN3 → the 11st light-receiving end → the 12nd optocoupler IC12 luminous end → resistance
R16 → the zero curve of the output end OUT3 → second input/output terminal IO4 → the 4th of N2 → the 4th charging capacitor E4 cathode.Due to electric current
There is electric current in ring, the luminous end of the 12nd optocoupler IC12 shines, and the luminous end of the 16th optocoupler IC16 shines.
Since the luminous end of the 12nd optocoupler IC12 shines, the light-receiving end conducting of the 12nd optocoupler IC12, controller draws
Foot 4-36-RX receives low level signal, illustrates that outdoor unit control panel communicates normally with third current loop communication circuit, and pass through
Display screen is shown, prompts after-sales staff.
Since the luminous end of the 16th optocoupler IC16 shines, the light-receiving end conducting of the 16th optocoupler IC16, outdoor unit control
The pin 1_14_RX_insider of device receives low level signal, illustrates outdoor unit control panel and third current loop communication circuit
Communication is normal.
Two, assume that outdoor unit current loop communication circuit uses its circuit structure two, referring to shown in Fig. 8, Fig. 9:
(1) controller controls the second relay K3 coil blackout, selects third current loop communication circuit, shown in Figure 8；
The pin 4-35-TX of controller exports high level, and the switch ways of the 11st switching tube N11 are connected, the 11st optocoupler IC11's
Luminous end shines.The pin 2-26-COMM-TX of outdoor controller exports high level, the switch ways of the 14th switching tube N14
The luminous end of conducting, the 18th optocoupler IC18 shines.
The input terminal IN3 of third current loop communication circuit is through the second relay K3, the second communication line C2 and outdoor unit electric current
The third input/output terminal IO3 connection of ring telecommunication circuit；The output end OUT3 of third current loop communication circuit is through the second zero curve N2
It is connect with the 4th input/output terminal IO4 of outdoor unit current loop communication circuit, it is shown in Figure 8；Third current loop communication circuit
Electric current loop can not be formed with outdoor unit current loop communication circuit.
The light-receiving end of 12nd optocoupler IC12 turns off, and the pin 4-36-RX of controller receives high level signal, illustrates room
Outer machine control panel and third current loop communication circuit communication abnormality, and shown by display screen, prompt after-sales staff.
The light-receiving end of 17th optocoupler IC17 turns off, and the pin 2-27-COMM-RX of outdoor controller receives low level
Signal illustrates outdoor unit control panel and third current loop communication circuit communication abnormality.
(2) controller controls the second relay K3 coil and powers on, and selects the 4th current loop communication circuit, shown in Figure 9；
The pin 4-37-TX1 of controller exports high level, and the luminous end of the 13rd optocoupler IC13 shines.The pin of outdoor controller
2-26-COMM-TX exports high level, the switch ways conducting of the 14th switching tube N14, the luminous end hair of the 18th optocoupler IC18
Light.
The input terminal IN4 of 4th current loop communication circuit is through the second zero curve N2 and the 4th of outdoor unit current loop communication circuit the
Input/output terminal IO4 connection；The output end OUT4 of 4th current loop communication circuit through the second relay K3, the second communication line C2 with
The third input/output terminal IO3 connection of outdoor unit current loop communication circuit, it is shown in Figure 9；4th current loop communication circuit with
Outdoor unit current loop communication circuit forms electric current loop.The current path of electric current loop are as follows: anode → tenth of third charging capacitor E3
Luminous end → R12 → relay K3 → the of output end OUT4 → second of the 14 optocoupler IC14 of light-receiving end → the of three optocoupler IC13
Two communication line C2 → third input/output terminal IO3 → R10 → the 18th optocoupler IC18 light-receiving end → the 17th optocoupler IC17
Luminous end → the 4th zero curve of input/output terminal IO4 → second N2 → input terminal IN4 → third charging capacitor E3 cathode.Due to electricity
There is electric current in stream ring, the luminous end of the 14th optocoupler IC14 shines, and the luminous end of the 17th optocoupler IC17 shines.
Since the luminous end of the 14th optocoupler IC14 shines, the light-receiving end conducting of the 14th optocoupler IC14, controller draws
Foot 4-38-RX1 receives high level signal, illustrates that outdoor unit control panel communicates normally with the 4th current loop communication circuit, and lead to
It crosses display screen to show, prompts after-sales staff.
Since the luminous end of the 17th optocoupler IC17 shines, the light-receiving end conducting of the 17th optocoupler IC17, outdoor unit control
The pin 2-27-COMM-RX of device receives high level signal, illustrates that outdoor unit control panel is communicated with the 4th current loop communication circuit
Normally.
For the ease of the connection of outdoor unit control panel and detecting tool, in the present embodiment, it is additionally provided with terminal block CN2,
Terminal block CN2 is separately connected the second firewire L2, the second zero curve N2, the second communication line C2, the second ground wire PE2.Outdoor unit control panel
Connect respectively with terminal block CN2 with detecting tool, with realize respectively with the second firewire L2, the second zero curve N2, the second communication line C2,
The connection of second ground wire PE2, and then realize the connection of outdoor unit control panel and detecting tool.
Certainly, the above description is not intended to limit the present invention, and the utility model is also not limited to the example above,
The variations, modifications, additions or substitutions that those skilled in the art are made in the essential scope of the utility model,
It should also belong to the protection scope of the utility model.
Claims (9)
1. a kind of air-conditioning control panel detecting tool, it is characterised in that:
The air-conditioning control panel includes indoor unit control panel and outdoor unit control panel；
The indoor unit control panel includes indoor machine controller, indoor unit current loop communication circuit, and the indoor unit electric current loop is logical
Believe that circuit includes two input/output terminals: the first input/output terminal, the second input/output terminal, the first input/output terminal connection
First communication line, second input/output terminal connect the first zero curve；
The outdoor unit control panel includes outdoor controller, outdoor unit current loop communication circuit, and the outdoor unit electric current loop is logical
Believe that circuit includes two input/output terminals: third input/output terminal, the 4th input/output terminal, the third input/output terminal connection
Second communication line, the 4th input/output terminal connect the second zero curve；
The detecting tool includes controller, display screen, the first current loop communication circuit, the second current loop communication circuit, third
Current loop communication circuit, the 4th current loop communication circuit, the first relay, the second relay；
First current loop communication circuit and the second current loop communication circuit respectively include input terminal and output end；
The input terminal of first current loop communication circuit connects first zero curve,
The output end of first current loop communication circuit connect first relay it is normally closed/open stationary contact,
The input terminal of second current loop communication circuit connects the normal opening/closing stationary contact of first relay,
The output end of second current loop communication circuit connects first zero curve,
The movable contact of first relay connects first communication line；The controller controls on the coil of the first relay
Whether electricity；The controller acquires the voltage signal of the first current loop communication circuit, the second current loop communication circuit, and root respectively
It is shown according to collected voltage signal control display screen；
The third current loop communication circuit and the 4th current loop communication circuit respectively include input terminal and output end；
The output end of the third current loop communication circuit connects second zero curve,
The input terminal of the third current loop communication circuit connect second relay it is normally closed/open stationary contact,
The output end of 4th current loop communication circuit connects the normal opening/closing stationary contact of second relay,
The input terminal of 4th current loop communication circuit connects second zero curve,
The movable contact of second relay connects second communication line；The controller controls on the coil of the second relay
Whether electricity；The controller acquires the voltage signal of third current loop communication circuit, the 4th current loop communication circuit, and root respectively
It is shown according to collected voltage signal control display screen.
2. detecting tool according to claim 1, it is characterised in that: first current loop communication circuit includes the first light
Coupling, the second optocoupler, first switch tube；
The control terminal of the controller connection first switch tube, one end ground connection of the switch ways of the first switch tube are described
The other end of the switch ways of first switch tube connects the output end of the luminous end of the first optocoupler, the luminous end of first optocoupler
Input terminal connect DC power supply；
The input terminal of the light-receiving end of first optocoupler connects the anode of the first charging capacitor, the cathode of first charging capacitor
Connect the input terminal of the first current loop communication circuit, anode the first firewire of connection of first charging capacitor；First light
The output end of the light-receiving end of coupling connects the input terminal of the luminous end of the second optocoupler, and the output end of the luminous end of second optocoupler connects
Connect the output end of the first current loop communication circuit；The input terminal of the light-receiving end of second optocoupler connects controller, and passes through the
One pull-up resistor connects DC power supply；The output end of the light-receiving end of second optocoupler is grounded.
3. detecting tool according to claim 1, it is characterised in that: second current loop communication circuit includes third light
Coupling, the 4th optocoupler, second switch；
The control terminal of the controller connection second switch, one end ground connection of the switch ways of the second switch are described
The other end of the switch ways of second switch connects the output end of the luminous end of the 4th optocoupler, the luminous end of the 4th optocoupler
Input terminal connect DC power supply；
The input terminal of the light-receiving end of 4th optocoupler connects the input terminal of the second current loop communication circuit；4th optocoupler
The input terminal of the luminous end of the output end connection third optocoupler of light-receiving end, the output end connection the of the luminous end of the third optocoupler
The output end of two current loop communication circuits；The input terminal of the light-receiving end of the third optocoupler connects DC power supply, the third light
The output end of the light-receiving end of coupling is grounded by the first pull down resistor, and connects controller.
4. detecting tool according to claim 1, it is characterised in that: the indoor unit current loop communication circuit includes the 5th
Optocoupler, the 6th optocoupler, third switching tube；
The control terminal of the interior machine controller connection third switching tube, a termination of the switch ways of the third switching tube
Ground, the other end of the switch ways of the third switching tube connect the output end of the luminous end of the 5th optocoupler, the 5th optocoupler
Luminous end input terminal connect DC power supply；
The input terminal of the light-receiving end of 5th optocoupler connects the first input/output terminal, the output of the light-receiving end of the 5th optocoupler
The input terminal of the luminous end of the 6th optocoupler of end connection, the output end of the luminous end of the 6th optocoupler connect the second input and output
End；Machine controller in the input terminal junction chamber of the light-receiving end of 6th optocoupler, and direct current is connected by the second pull-up resistor
Source；The output end of the light-receiving end of 6th optocoupler is grounded.
5. detecting tool according to claim 1, it is characterised in that: the indoor unit current loop communication circuit includes the 7th
Optocoupler, the 8th optocoupler, the 4th switching tube；
The interior machine controller connects the control terminal of the 4th switching tube, a termination of the switch ways of the 4th switching tube
Ground, the other end of the switch ways of the 4th switching tube connect the output end of the luminous end of the 7th optocoupler, the 7th optocoupler
Luminous end input terminal connect DC power supply；
The input terminal of the light-receiving end of 7th optocoupler connects the anode of the second charging capacitor, the cathode of second charging capacitor
Connect the second input/output terminal, anode the first firewire of connection of second charging capacitor；The light-receiving end of 7th optocoupler
Output end connects the input terminal of the luminous end of the 8th optocoupler, and the first input of output end connection of the luminous end of the 8th optocoupler is defeated
Outlet；The input terminal of the light-receiving end of 8th optocoupler connects DC power supply, and the output end of the light-receiving end of the 8th optocoupler is logical
Cross the second pull down resistor ground connection, and machine controller in junction chamber.
6. detecting tool according to claim 1, it is characterised in that: the third current loop communication circuit includes the 11st
Optocoupler, the 12nd optocoupler, the 11st switching tube；
The controller connects the control terminal of the 11st switching tube, and one end of the switch ways of the 11st switching tube is grounded,
The other end of the switch ways of 11st switching tube connects the output end of the luminous end of the 11st optocoupler, the 11st light
The input terminal of the luminous end of coupling connects DC power supply；
The input terminal of the input terminal connection third current loop communication circuit of the light-receiving end of 11st optocoupler, the 11st light
The output end of the light-receiving end of coupling connects the input terminal of the luminous end of the 12nd optocoupler, the output of the luminous end of the 12nd optocoupler
The output end of end connection third current loop communication circuit；The input terminal of the light-receiving end of 12nd optocoupler connects controller, and
DC power supply is connected by third pull-up resistor；The output end of the light-receiving end of 12nd optocoupler is grounded.
7. detecting tool according to claim 1, it is characterised in that: the 4th current loop communication circuit includes the 13rd
Optocoupler, the 14th optocoupler, the 12nd switching tube；
The controller connects the control terminal of the 12nd switching tube, and one end of the switch ways of the 12nd switching tube is grounded,
The other end of the switch ways of 12nd switching tube connects the output end of the luminous end of the 13rd optocoupler, the 13rd light
The input terminal of the luminous end of coupling connects DC power supply；
The anode of the input terminal connection third charging capacitor of the light-receiving end of 13rd optocoupler, the third charging capacitor are born
Pole connects the input terminal of the 4th current loop communication circuit, anode the second firewire of connection of the third charging capacitor；Described tenth
The output end of the light-receiving end of three optocouplers connects the input terminal of the luminous end of the 14th optocoupler, the luminous end of the 14th optocoupler
Output end connects the output end of the 4th current loop communication circuit；The input terminal of the light-receiving end of 14th optocoupler connects direct current
The output end in source, the light-receiving end of the 14th optocoupler is grounded by third pull down resistor, and connects controller.
8. detecting tool according to claim 1, it is characterised in that: the outdoor unit current loop communication circuit includes the tenth
Five optocouplers, the 16th optocoupler, the 13rd switching tube；
The outdoor controller connects the control terminal of the 13rd switching tube, one end of the switch ways of the 13rd switching tube
Ground connection, the other ends of the switch ways of the 13rd switching tube connect the output end of the luminous end of the 15th optocoupler, and described the
The input terminal of the luminous end of 15 optocouplers connects DC power supply；
The input terminal of the light-receiving end of 15th optocoupler connects the anode of the 4th charging capacitor, and the 4th charging capacitor is born
Pole connects the 4th input/output terminal, anode the second firewire of connection of the 4th charging capacitor；The light of 15th optocoupler
The output end at end connects the input terminal of the luminous end of the 16th optocoupler, the output end connection of the luminous end of the 16th optocoupler the
Three input/output terminals；The input terminal of the light-receiving end of 16th optocoupler connects outdoor controller, and passes through the 4th pull-up electricity
Resistance connection DC power supply；The output end of the light-receiving end of 16th optocoupler is grounded.
9. detecting tool according to claim 1, it is characterised in that: the outdoor unit current loop communication circuit includes the tenth
Seven optocouplers, the 18th optocoupler, the 14th switching tube；
The outdoor controller connects the control terminal of the 14th switching tube, one end of the switch ways of the 14th switching tube
Ground connection, the other ends of the switch ways of the 14th switching tube connect the output end of the luminous end of the 18th optocoupler, and described the
The input terminal of the luminous end of 18 optocouplers connects DC power supply；
The input terminal of the light-receiving end of 18th optocoupler connects third input/output terminal, the light-receiving end of the 18th optocoupler
Output end connects the input terminal of the luminous end of the 17th optocoupler, and the output end connection the 4th of the luminous end of the 17th optocoupler is defeated
Enter output end；The input terminal of the light-receiving end of 17th optocoupler connects DC power supply, the light-receiving end of the 17th optocoupler
Output end is grounded by the 4th pull down resistor, and connects outdoor controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821614627.6U CN208921836U (en) | 2018-09-30 | 2018-09-30 | A kind of air-conditioning control panel detecting tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821614627.6U CN208921836U (en) | 2018-09-30 | 2018-09-30 | A kind of air-conditioning control panel detecting tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208921836U true CN208921836U (en) | 2019-05-31 |
Family
ID=66708150
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821614627.6U Active CN208921836U (en) | 2018-09-30 | 2018-09-30 | A kind of air-conditioning control panel detecting tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208921836U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110470037A (en) * | 2019-08-01 | 2019-11-19 | 广东美的制冷设备有限公司 | Reverse-connection preventing circuit, method, apparatus and the air conditioner of convertible frequency air-conditioner power supply line |
| CN110848934A (en) * | 2019-11-22 | 2020-02-28 | 广州视源电子科技股份有限公司 | Test system for current loop communication circuit and air conditioner |
| CN112595959A (en) * | 2020-12-12 | 2021-04-02 | 江西洪都航空工业集团有限责任公司 | Intelligent closestool controller detection method |
| CN112710061A (en) * | 2020-12-08 | 2021-04-27 | 珠海格力电器股份有限公司 | Air conditioner control device and method capable of automatically identifying identity |
-
2018
- 2018-09-30 CN CN201821614627.6U patent/CN208921836U/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110470037A (en) * | 2019-08-01 | 2019-11-19 | 广东美的制冷设备有限公司 | Reverse-connection preventing circuit, method, apparatus and the air conditioner of convertible frequency air-conditioner power supply line |
| CN110470037B (en) * | 2019-08-01 | 2021-06-22 | 广东美的制冷设备有限公司 | Anti-reverse connection circuit, method and device for power line of variable frequency air conditioner and air conditioner |
| CN110848934A (en) * | 2019-11-22 | 2020-02-28 | 广州视源电子科技股份有限公司 | Test system for current loop communication circuit and air conditioner |
| CN110848934B (en) * | 2019-11-22 | 2022-01-28 | 广州视源电子科技股份有限公司 | Test system for current loop communication circuit and air conditioner |
| CN112710061A (en) * | 2020-12-08 | 2021-04-27 | 珠海格力电器股份有限公司 | Air conditioner control device and method capable of automatically identifying identity |
| CN112710061B (en) * | 2020-12-08 | 2022-02-15 | 珠海格力电器股份有限公司 | Control method of air conditioner control device capable of automatically identifying identity |
| CN112595959A (en) * | 2020-12-12 | 2021-04-02 | 江西洪都航空工业集团有限责任公司 | Intelligent closestool controller detection method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN208921836U (en) | A kind of air-conditioning control panel detecting tool | |
| CN102878651B (en) | Intelligent inverter air conditioner with low standby power | |
| CN104864564B (en) | Air conditioner, outdoor unit and its powered communication control system | |
| CN206235714U (en) | For the communication module of low-voltage circuit breaker detection | |
| CN105972768A (en) | Electric current loop communication control circuit and method of air conditioner | |
| CN107547109A (en) | Air conditioner current loop communication circuit and air conditioner | |
| CN209432956U (en) | A kind of air conditioner outdoor unit control panel detecting tool | |
| CN109256763B (en) | Automatic zero-live line communication alignment circuit and control method thereof | |
| CN201044525Y (en) | Digital light distribution control device | |
| CN207070401U (en) | A kind of induction type Width funtion LED lamp drive circuit | |
| CN206755494U (en) | Air conditioner current loop communication circuit and air conditioner | |
| CN209560034U (en) | A kind of air conditioner indoor unit control panel detecting tool | |
| CN209448425U (en) | A kind of three-phase anti-misconnection circuit and corresponding air-conditioning | |
| CN208636713U (en) | Finished automobile controller factory detection device | |
| CN107087331A (en) | A kind of Width funtion LED lamp drive circuit with emergency function | |
| CN210344465U (en) | Switch type valve controller | |
| CN111023395A (en) | Monitoring circuit and air conditioner | |
| CN207070400U (en) | A kind of Width funtion LED lamp drive circuit with emergency function | |
| CN209437156U (en) | A kind of amount of dust instruction control circuit and dust catcher | |
| CN106440197A (en) | Control connecting box for air conditioner and air conditioner detection system | |
| CN206835411U (en) | A kind of lighting control circuit and home lighting systems of intelligent television control | |
| CN110534055A (en) | Display panel of air-conditioner and air conditioner | |
| CN100432560C (en) | Air-conditioning intermediate controller | |
| CN109245492A (en) | A kind of multiple-output electric power | |
| CN109088576B (en) | Universal variable frequency speed regulating equipment and operation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 266101 Haier Industrial Park, 1 Haier Road, Laoshan District, Shandong, Qingdao Patentee after: CAOS Chuangzhi IOT Technology Co.,Ltd. Patentee after: QINGDAO DINGXIN ELECTRONICS TECHNOLOGY CO.,LTD. Patentee after: Foshan Shunde Haier Intelligent Electronic Co.,Ltd. Address before: 266101 Haier Industrial Park, 1 Haier Road, Laoshan District, Shandong, Qingdao Patentee before: Qingdao Haier Intelligent Electronics Co.,Ltd. Patentee before: QINGDAO DINGXIN ELECTRONICS TECHNOLOGY CO.,LTD. Patentee before: FOSHAN SHUNDE HAIER INTELLIGENT ELECTRONIC CO.,LTD. |
|
| CP01 | Change in the name or title of a patent holder |