CN109857184A - A kind of full isolation high-pressure mini solid state q-switched function controller - Google Patents
A kind of full isolation high-pressure mini solid state q-switched function controller Download PDFInfo
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- CN109857184A CN109857184A CN201910201072.5A CN201910201072A CN109857184A CN 109857184 A CN109857184 A CN 109857184A CN 201910201072 A CN201910201072 A CN 201910201072A CN 109857184 A CN109857184 A CN 109857184A
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- power regulation
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Abstract
The invention discloses a kind of full isolation high-pressure mini solid state q-switched function controllers, plate is executed including synchronous buck transformer, Power Regulation control panel and MOS, wherein, 3000V alternating current is depressurized to 10V alternating current and inputs the Power Regulation control panel by synchronous buck transformer, then is executed plate by the MOS and carried out cycle Power Regulation；Power Regulation control panel includes power supply processing isolation module, zero crossing detection module, 485 modules of isolation and MCU, it MCU and power supply processing isolation module, zero crossing detection module and 485 modules is isolated is separately connected, synchronous buck transformer inputs MCU after 10V alternating current is inputted zero crossing detection module, the input of power supply processing isolation module is 12V DC electricity, exports the direct current for 3.3V and 5V.The present invention can be realized the control of the power regulation under high alternating voltage, small in size, and contactless using solid-state pressure regulation, response is fast, can carry out networking control by RS485 bus in industry spot.
Description
Technical field
The invention belongs to electronic circuit fields, are related to a kind of full isolation high-pressure mini solid state q-switched function controller.
Background technique
Solid-state power regulating eqiupment is the solid-state component for integrating power control and breaker, have it is contactless, without electric arc, sound
The advantages that answering fast, high reliablity and being convenient for computer long-distance control.In recent years, with the increase of Industry Control power, to height
The demand of pressure power control increases increasingly, but not only deficient but also volume is big for high pressure power regulating eqiupment on the market, can not be narrow in space
Small place installation, strongly limits the miniaturization and removableization of equipment.
The pollution-free detector in lake under some detecting devices such as Antarctic Ice, not only internal installation space it is narrow but also need into
The high-power computer heating control of row heats to reduce transmission loss using High Voltage Power Supply, however Power Regulation equipment on the market can not
Meet demand, small in size is unable to control high voltage, can be excessive with the volume again of high pressure Power Regulation, exploitation design based on the above background
This Power Regulation controller.
The principle that existing high pressure Power Regulation technology is generally adjusted using similar transformer, i.e., it is movable in secondary side placement one
Brush, by adjusting brush position to adjusting output voltage, there are brush and huge copper cores, mostly using mechanical rotation
Button adjusting section.Therefore not only volume is big for the prior art, but also brush introduces conductive contact, might have electric spark in the course of work
Generation or contact problems.In addition, there is also not intelligence, the deficiency that is unable to networking, cannot remotely control for the prior art.
Summary of the invention
To solve the above problems, the technical solution of the present invention is as follows: a kind of full isolation high-pressure mini solid state q-switched function controller,
Plate is executed including synchronous buck transformer, Power Regulation control panel and MOS, wherein the synchronous buck transformer will
3000V alternating current is depressurized to 10V alternating current and inputs the Power Regulation control panel, then executes plate by the MOS and carry out cycle Power Regulation；
The Power Regulation control panel includes power supply processing isolation module, zero crossing detection module, 485 modules of isolation and MCU, MCU
With power supply processing isolation module, zero crossing detection module and 485 modules be isolated be separately connected, synchronous buck transformer exchanges 10V
MCU is inputted after electricity input zero crossing detection module, the input of power supply processing isolation module is 12V DC electricity, is exported as 3.3V and 5V
Direct current；
The MOS execute plate include isolation control interface, current sample isolation module, temperature detecting module, fuse,
MOS and absorption circuit；The MOS and absorption circuit connect respectively with control interface, current sample isolation module and fuse is isolated
It connects；MCU with MOS and absorption circuit is carried out that connection is isolated by the isolation control interface；The current sample isolation module is by MOS
And the electric current of absorption circuit carries out sampling output to MCU；The temperature detecting module samples simultaneously the MOS temperature for executing plate
It exports to MCU.
Preferably, the zero crossing detection module includes operational amplifier LM158 and double/monostable flipflop CD4098, fortune
Amplifier LM158 is calculated to generation rising edge at the leading zero's of each positive half cycle of alternating current, and in the case where the positive half cycle place of returning to zero generates
Edge, the square wave that output pulse width is 180 ° drop, and square wave enters double/monostable flipflop CD4098, in square wave rising edge under
Drop determined jointly along generating by capacitor and resistance the pulse of pulse width, the two pulse trains warp or door 74VHC1G32 phase or
After obtain zero-crossing pulse.
Preferably, the current sample isolation module includes that photoelectrical coupler HCNR200 carries out linear optical coupling isolation, operation
Amplifier TS321ILT carries out signal condition.Photoelectrical coupler HCNR200 works under photoelectricity die pressing type, pre-amplifier and coupling
Photoelectric tube inside clutch forms closure negative-feedback circuit, is allowed to linear change, post-amplifier then carries out I/V conversion, will be electric
Circulation is changed to voltage output.
Preferably, MOS is pasted on aluminum substrate using heat-conducting silicone grease, is collectively constituted MOS and is executed plate, while using as bottom plate
In heat dissipation.
Preferably, the power supply processing isolation module includes that F1205XT-1WR2 chip is isolated.
Preferably, the power supply processing isolation module includes that SPX3819M5-3-3 chip carries out 5V-3.3V DC voltage turn
It changes and SPX3819M5-5 chip carries out the conversion of 12V-5V DC voltage.
Preferably, 485 modules of the isolation include that IL3085-1 chip protects peripheral equipment.
Preferably, the isolation control interface includes optical coupling isolator EL357N.
Preferably, RC resistance-capacitance absorption circuit is set at metal-oxide-semiconductor both ends in the MOS and absorption circuit.
Preferably, the temperature detecting module includes that NTC thermistor carries out temperature detection
Compared with prior art, beneficial effects of the present invention are as follows:
The present invention, which not only controls voltage and can reach 3000VAC, can also take into account volume, while Power Regulation controller and extraneous
Electrical isolation is carried out to guarantee the safety of other equipment.Power Regulation controller is designed using Split double-layer, and the aluminum substrate of lower layer is solid
MOS is determined as executing plate while being used as radiating bottom plate, and upper layer is Power Regulation control panel, handles various control signals.It is examined using zero passage
The cycle Power Regulation mode for surveying triggering avoids phase-shift control bring from polluting power grid problem；When MCU receives what 485 buses were sent
After control instruction, movement is executed in the zero-acrross ing moment of alternating current, and joined necessary overheat and overcurrent protection.Power Regulation control
High-performance MCU is used inside device, monitors Power Regulation controller state in real time, and networking control, Power Regulation control can be carried out by RS485
All external interfaces of device are isolated, and influence other equipment after preventing damage.Present invention uses MOSFET, in volume significantly
Reduce, add zero passage detection technology and reliable process control, greatly improve reliability, also use isolation RS 485 into
Row communication can carry out networking control in industry spot.
Detailed description of the invention
Fig. 1 is the structural block diagram of the full isolation high-pressure mini solid state q-switched function controller of the specific embodiment of the invention；
Fig. 2 is the power supply processing isolation module of the full isolation high-pressure mini solid state q-switched function controller of the specific embodiment of the invention
Middle isolation partial circuit schematic diagram；
Fig. 3 is the power supply processing isolation module of the full isolation high-pressure mini solid state q-switched function controller of the specific embodiment of the invention
Middle power supply conversion portion circuit diagram；
Fig. 4 is the zero crossing detection module circuit of the full isolation high-pressure mini solid state q-switched function controller of the specific embodiment of the invention
Schematic diagram；
Fig. 5 is the zero crossing detection module output of the full isolation high-pressure mini solid state q-switched function controller of the specific embodiment of the invention
Waveform diagram；
Fig. 6 is 485 modular circuit of isolation of the full isolation high-pressure mini solid state q-switched function controller of the specific embodiment of the invention
Schematic diagram；
Fig. 7 is the isolation control interface of the full isolation high-pressure mini solid state q-switched function controller of the specific embodiment of the invention
Schematic diagram；
Fig. 8 is the MOS and absorption circuit electricity of the full isolation high-pressure mini solid state q-switched function controller of the specific embodiment of the invention
Road schematic diagram；
Fig. 9 is the current sample isolation module of the full isolation high-pressure mini solid state q-switched function controller of the specific embodiment of the invention
Circuit diagram；
Figure 10 is the temperature detecting module electricity of the full isolation high-pressure mini solid state q-switched function controller of the specific embodiment of the invention
Road schematic diagram.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to the accompanying drawings and embodiments, right
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.
On the contrary, the present invention covers any substitution done on the essence and scope of the present invention being defined by the claims, repairs
Change, equivalent method and scheme.Further, in order to make the public have a better understanding the present invention, below to of the invention thin
It is detailed to describe some specific detail sections in section description.Part without these details for a person skilled in the art
The present invention can also be understood completely in description.
Referring to Fig. 1-10, it show the structure of the full isolation high-pressure mini solid state q-switched function controller of one kind of the embodiment of the present invention
Block diagram and each module circuit schematic, including synchronous buck transformer 1, Power Regulation control panel 5 and MOS execute plate 14；
3000V alternating current is depressurized to 10V alternating current and inputs the Power Regulation control panel 5 by the synchronous buck transformer 1, then
Plate 14 is executed by the MOS and carries out cycle Power Regulation；
The Power Regulation control panel 5 includes power supply processing isolation module 2, zero crossing detection module 3, isolation 485 module, 4 and
It MCU6, MCU6 and power supply processing isolation module 2, zero crossing detection module 3 and 485 modules 4 is isolated is separately connected, synchronous buck transformation
10V alternating current is inputted after zero crossing detection module 3 and inputs MCU6 by device 1, and the input of power supply processing isolation module 2 is 12V DC electricity,
Output is the direct current of 3.3V and 5V；
It includes isolation control interface 7, current sample isolation module 8, temperature detecting module 9, insurance that the MOS, which executes plate 14,
Silk 10, MOS and absorption circuit 11；The MOS and absorption circuit 11 with control interface 7, current sample isolation module 8 is isolated and protects
Dangerous silk 10 is separately connected；MCU6 with MOS and absorption circuit 11 is carried out that connection is isolated by the isolation control interface 7；The electric current
The electric current of MOS and absorption circuit 11 is carried out sampling output to MCU6 by sampling isolation module 8；The temperature detecting module 9 is to MOS
The temperature for executing plate 14 is sampled and is exported to MCU6；MOS type number is IXTL2N470-ND, drain-source voltage 4700V, continuous electricity
Stream is 2A.
By above-mentioned setting, Power Regulation control, alternating-current voltage source 12 and MOS and absorption circuit 11 are carried out to alternating-current voltage source 12
It is connected by fuse 10 and resistance 13, for needing to carry out the occasion of high voltage Power Regulation control, in order to reduce Power Regulation controller
To the cycle Power Regulation mode that the impulsive disturbance of power circuit, design are triggered using zero passage detection, when MCU6 receives 485 total line traffic controls
After system instruction, executed in the zero-acrross ing moment of alternating current dynamic；The zero-acrross ing moment of alternating current can be converted to one by zero crossing detection module 3
A pulse, the arrival that MCU6 detects the pulse is zero-acrross ing moment.For security consideration, not by high-voltage electricity be introduced directly into but first
Become 10VAC by synchronous buck transformer 1 and is re-introduced into Power Regulation control panel 5.And it is also added into necessary overheat and overcurrent is protected
Shield, overheating protection carry out temperature detection using NTC thermistor, and current sample is obtained using sampling resistor.
In specific embodiment, referring to fig. 2, power supply processing isolation module 2 includes that F1205XT-1WR2 chip is isolated；Ginseng
See that Fig. 3, the power unit of power supply processing isolation module 2 include that SPX3819M5-3-3 chip carries out 5V-3.3V DC voltage turn
It changes and SPX3819M5-5 chip carries out the conversion of 12V-5V DC voltage.
Referring to fig. 4, zero passage detection refers in AC system, when waveform is converted from positive (negative) half circumferential negative (just) half cycle
When by zero-bit, detection that system is made.If by chance connecting MOS in the wave crest of alternating current can cause to rush to load and power grid
It hits, will increase metal-oxide-semiconductor loss also to reduce the service life of metal-oxide-semiconductor.Zero passage detection is devised in order to avoid this kind of situation
Circuit only just will do it the on-off of loop of power circuit after receiving control instruction in the zero-bit of alternating current.Zero cross detection circuit
Need alternating current as input, but high-voltage electricity is directly entered control panel and has very big security risk, therefore uses synchronous drop
Voltage is reduced to after 10VAC and inputs zero crossing detection module 3 again by pressure transformer 1.Sinusoidal ac by by synchronous buck transformer,
After the circuit of operational amplifier LM158 composition, rising edge is generated at the leading zero's of each positive half cycle of alternating current, and just half
The week place of returning to zero generates failing edge, so that the square wave that pulse width is 180 ° is formed, referring to the waveform U in Fig. 5A；Square wave entrance pair/
Monostable flipflop CD4098 is generated respectively in square wave rising edge and failing edge and is determined pulse width jointly by capacitor and resistance
Two pulses, the two pulse trains through door 74VHC1G32 phase or after obtain final zero-crossing pulse, referring to the wave in Fig. 5
Shape UB。
Power Regulation controller carries out networking by 485 buses, facilitates the computer at industry control scene to control, in order to external device
It is protected, to 485 modules using 485 modules 4 of isolation, peripheral equipment is protected referring to Fig. 6, including IL3085-1 chip
Shield.
Plate 14 is executed for MOS, to protect MCU6, the control of metal-oxide-semiconductor uses light-coupled isolation, avoids directly being electrically connected,
Provided with isolation control interface 7, referring to Fig. 7 comprising optical coupling isolator EL357N.
For the circuit diagram of MOS and absorption circuit 11 referring to Fig. 8, the control of Power Regulation controller is alternating current, it is therefore desirable to
Bidirectionally conductive, two metal-oxide-semiconductors are on-off type control simultaneously according to i.e. anti-series configuration, control mode is attached in back-to-back fashion
System.The RC resistance-capacitance absorption circuit of R4 and C3 composition is added at the both ends of MOS, prevents excessive burr voltage damage metal-oxide-semiconductor.
Fuse 10F1 is set in incoming end, prevents short circuit overcurrent from damaging.
Current sense resistor R7 is set between MOS, the size of electric current can be obtained by reading the voltage on R7, due to
R7 is located on forceful electric power route, and substantial risk will be had by being directly connected to MCU6, therefore will be isolated using linear optical coupling, photoelectric coupling
Device HCNR200 works under photoelectricity die pressing type, and it is negative that the photoelectric tube inside pre-amplifier TS321ILT and coupler forms closure
Feed circuit, is allowed to linear change, and post-amplifier TS321ILT then carries out I/V conversion, converts electrical current into voltage output.Electricity
The circuit diagram of stream sampling isolation module 8 is referring to Fig. 9.
To be able to achieve temperature monitoring, temperature detecting module 9 is set, and circuit diagram is referring to Figure 10, using NTC thermistor R2
Built-up circuit has the characteristics that simple and easy, high reliablity.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Made any modifications, equivalent replacements, and improvements etc., should all be included in the protection scope of the present invention within mind and principle.
Claims (10)
1. a kind of full isolation high-pressure mini solid state q-switched function controller, which is characterized in that controlled including synchronous buck transformer, Power Regulation
Plate and MOS execute plate, wherein 3000V alternating current is depressurized to 10V alternating current and inputs the Power Regulation by the synchronous buck transformer
Control panel, then plate is executed by the MOS and carries out cycle Power Regulation；
The Power Regulation control panel includes power supply processing isolation module, zero crossing detection module, 485 modules of isolation and MCU, MCU and electricity
Source processing isolation module, zero crossing detection module and 485 modules of isolation are separately connected, and synchronous buck transformer is defeated by 10V alternating current
MCU is inputted after entering zero crossing detection module, the input of power supply processing isolation module is 12V DC electricity, is exported as the straight of 3.3V and 5V
Galvanic electricity；
The MOS execute plate include isolation control interface, current sample isolation module, temperature detecting module, fuse, MOS and
Absorption circuit；The MOS and absorption circuit are separately connected with control interface, current sample isolation module and fuse is isolated；Institute
Isolation control interface is stated with MOS and absorption circuit to carry out that connection is isolated by MCU；The current sample isolation module is by MOS and suction
The electric current for withdrawing road carries out sampling output to MCU；The temperature detecting module is sampled and is exported to the MOS temperature for executing plate
To MCU.
2. controller according to claim 1, which is characterized in that the zero crossing detection module includes operational amplifier
LM158 and double/monostable flipflop CD4098, operational amplifier LM158 are produced at the leading zero's of each positive half cycle of alternating current
Raw rising edge, and failing edge, the square wave that output pulse width is 180 ° are generated at the positive half cycle place of returning to zero, square wave enters double/monostable
State trigger CD4098 generates the pulse for determining pulse width jointly by capacitor and resistance in square wave rising edge and failing edge, this
Two pulse trains through door 74VHC1G32 phase or after obtain zero-crossing pulse.
3. controller according to claim 1, which is characterized in that the current sample isolation module includes photoelectrical coupler
HCNR200 carries out linear optical coupling isolation, and operational amplifier TS321ILT carries out signal condition.Photoelectrical coupler HCNR200 work
Under photoelectricity die pressing type, the photoelectric tube inside pre-amplifier and coupler forms closure negative-feedback circuit, is allowed to linear change,
Post-amplifier then carries out I/V conversion, converts electrical current into voltage output.
4. controller according to claim 1, which is characterized in that MOS is pasted on aluminum substrate using heat-conducting silicone grease, jointly
It forms MOS and executes plate, while as bottom plate for radiating.
5. controller according to claim 1, which is characterized in that the power supply processing isolation module includes F1205XT-
1WR2 chip is isolated.
6. controller according to claim 1, which is characterized in that the power supply processing isolation module includes SPX3819M5-
3-3 chip carries out the conversion of 5V-3.3V DC voltage and SPX3819M5-5 chip carries out the conversion of 12V-5V DC voltage.
7. controller according to claim 1, which is characterized in that 485 modules of the isolation include IL3085-1 chip pair
Peripheral equipment is protected.
8. controller according to claim 1, which is characterized in that the isolation control interface includes optical coupling isolator
EL357N。
9. controller according to claim 1, which is characterized in that be arranged in the MOS and absorption circuit at metal-oxide-semiconductor both ends
RC resistance-capacitance absorption circuit.
10. controller according to claim 1, which is characterized in that the temperature detecting module include NTC thermistor into
Trip temperature detection.
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| CN201910201072.5A CN109857184A (en) | 2019-03-18 | 2019-03-18 | A kind of full isolation high-pressure mini solid state q-switched function controller |
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Application publication date: 20190607 |