CN110108915A - A kind of intelligent electric meter based on audio alert - Google Patents
A kind of intelligent electric meter based on audio alert Download PDFInfo
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- CN110108915A CN110108915A CN201910543893.7A CN201910543893A CN110108915A CN 110108915 A CN110108915 A CN 110108915A CN 201910543893 A CN201910543893 A CN 201910543893A CN 110108915 A CN110108915 A CN 110108915A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R11/00—Electromechanical arrangements for measuring time integral of electric power or current, e.g. of consumption
- G01R11/02—Constructional details
- G01R11/24—Arrangements for avoiding or indicating fraudulent use
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R11/00—Electromechanical arrangements for measuring time integral of electric power or current, e.g. of consumption
- G01R11/02—Constructional details
- G01R11/25—Arrangements for indicating or signalling faults
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- Remote Monitoring And Control Of Power-Distribution Networks (AREA)
Abstract
The invention discloses a kind of intelligent electric meters based on audio alert, including master controller, current leakage detection system, detection system of opposing electricity-stealing, short-circuit detecting module, intelligent terminal control module, intelligent electric meter phonetic warning system and system main website.A kind of intelligent electric meter based on audio alert provided in an embodiment of the present invention, the technology combined by detection system of opposing electricity-stealing, current leakage detection system, short-circuit detecting module and intelligent electric meter phonetic warning system, ammeter line short fault, leak current fault can be detected automatically by devising, and the intelligent electric meter with audio alert, the thought that voice alarm function and gsm module telecommunication technique combine is incorporated, the long-range reception alarm message of intelligent electric meter may be implemented.
Description
Technical field
The invention belongs to ammeter technical field more particularly to a kind of intelligent electric meters based on audio alert.
Background technique
With the rapid development of our country's economy, the raising of people's lives level, the number of various powerful household electrical appliance
Amount is continuously increased, but new electrical problem is also gradually exposed, such as the insulated hull aging of electric wire or the insulation of electric wire
Skin is damaged, and especially for the electricity consumer of those rural areas, Electrical Safety consciousness is weak, many familys also use it is old
Chopper switch, and be all not fill earth leakage circuit-breaker, in addition if not installing the safety precautions of ground connection, with
In electric process, due to the defect of electrical equipment itself or because of equipment improper use, such case, once there is route or use
The metal shell of electric appliance leaks electricity, and just has the danger of electric shock.With the rapid development of electric utility, safety utilization of electric power be can not be ignored.
In daily life, many electricity consumers are liked opening powerful electrical appliance simultaneously, and such case be easy to cause electricity consumption
Device overload spy or line short fault, if electricity consumer family is fitted without breaker, once it is more than the specified of intelligent electric meter
Electric current is just easy to burn out ammeter, causes the electrical appliance of user's family to be burned or because of line temperature mistake caused by short circuit
Height causes to catch fire, and causes the loss of a large amount of economy.
Present power grid enterprises grab to sneak current and still manually check, and power grid enterprises will spend a large amount of manpower every year
Grab the electricity consumer of power stealing with material resources, investment it is at high cost, and low efficiency, traditional ammeter lack arranging for electricity protection
It applies, reliability is not high, volume is big, has a single function, it is difficult to comply with the demand of modern Economy Development.
Therefore, a kind of ammeter that can prompt electric leakage, overload or short circuit and stealing how is designed, becomes current and is badly in need of solution
Certainly the problem of.
Summary of the invention
The purpose of the present invention is to provide a kind of intelligent electric meters based on audio alert, to solve the above technical problem.
To achieve this purpose, the present invention adopts the following technical scheme:
A kind of intelligent electric meter based on audio alert, including master controller, current leakage detection system, detection system of opposing electricity-stealing,
Short-circuit detecting module, intelligent terminal control module, intelligent electric meter phonetic warning system and system main website；
The master controller is electrically connected with the current leakage detection system, detection system of opposing electricity-stealing and short-circuit detecting module respectively
It connects；
The master controller respectively with the intelligent terminal control module, intelligent electric meter phonetic warning system and system main website
Communication connection.
Optionally, the master controller is connect with the intelligent terminal control module by gsm module；
The master controller is connect with the intelligent electric meter phonetic warning system by serial communication module；
The master controller is connected to the network by wireless communication with the system main website.
Optionally, the short-circuit detecting module is used to detect the load current of ammeter wire road；
When the load current is greater than the rated value of ammeter, triggers the short-circuit detecting module and sent out to the master controller
Short-circuit alarming signal is sent, the intelligent electric meter is cut off the power and control respectively to the master controller according to the short-circuit alarming signal
Phonetic warning system issues short-circuit audio alert, and the master controller is respectively to the intelligent terminal control module and the system
Main website sends short-circuit alarming information.
Optionally, the current leakage detection system is for detecting whether ammeter wire road has electric leakage；
When detecting that there is electric leakage in the ammeter wire road, triggers the current leakage detection system and sent to the master controller
The intelligent electric meter language is cut off the power and control respectively to leakage-current alarm signal, the master controller according to the leakage-current alarm signal
Sound alarm system issues electric leakage audio alert, and the master controller is respectively to the intelligent terminal control module and the system master
It stands and sends leakage-current alarm information.
Optionally, the detection system of opposing electricity-stealing is for detecting whether ammeter wire road has stealing；
When detecting that there is stealing in the ammeter wire road, detection system of opposing electricity-stealing described in triggering is sent out to the master controller
Stealing alarm signal is sent, the master controller controls the intelligent electric meter phonetic warning system according to the stealing alarm signal and sends out
Stealing audio alert out, the master controller send stealing report to the intelligent terminal control module and the system main website respectively
Alert information.
Optionally, the current leakage detection system includes circuit measuring zero phase sequence current and signal processing and amplifying circuit；
The signal processing and amplifying circuit are electrically connected to the circuit measuring zero phase sequence current, the signal processing and amplification
Circuit is electrically connected to the master controller.
Optionally, the detection system of opposing electricity-stealing includes current detection module and ammeter is uncapped detection module；
The current detection module and ammeter detection module of uncapping are electrically connected in the master controller.
Compared with prior art, the embodiment of the present invention has the advantages that
A kind of intelligent electric meter based on audio alert provided in an embodiment of the present invention, by detection system of opposing electricity-stealing, electric leakage
The technology that detection system, short-circuit detecting module and intelligent electric meter phonetic warning system combine, electricity can be detected automatically by devising
Table line short fault, leak current fault, and the intelligent electric meter with audio alert, incorporate voice alarm function and gsm module is remote
The long-range reception alarm message of intelligent electric meter may be implemented in the thought that the journey communication technology combines.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention without any creative labor, may be used also for those of ordinary skill in the art
To obtain other attached drawings according to these attached drawings.
Fig. 1 is a kind of structure chart of the intelligent electric meter based on audio alert provided in an embodiment of the present invention.
It illustrates:
Intelligent mobile phone terminal 1, gsm module 2, current detection module 3, ammeter uncap detection module 4, zero-sequence current detection electricity
Road 5, signal processing and amplifying circuit 6, short-circuit detecting module 7, serial communication module 8, WT588S-16S speech chip 9, loudspeaking
Device 10, cordless communication network 11, system main website 12.
Specific embodiment
In order to make the invention's purpose, features and advantages of the invention more obvious and easy to understand, below in conjunction with the present invention
Attached drawing in embodiment, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that disclosed below
Embodiment be only a part of the embodiment of the present invention, and not all embodiment.Based on the embodiments of the present invention, this field
Those of ordinary skill's all other embodiment obtained without making creative work, belongs to protection of the present invention
Range.
It please refers to Fig. 1 and present embodiments provides a kind of intelligent electric meter based on audio alert, including master controller, electric leakage inspection
Examining system, detection system of opposing electricity-stealing, short-circuit detecting module 7, intelligent terminal control module, intelligent electric meter phonetic warning system and it is
Unite main website 12.
The master controller is electrically connected with the current leakage detection system, detection system of opposing electricity-stealing and short-circuit detecting module 7 respectively
It connects.
The master controller respectively with the intelligent terminal control module, intelligent electric meter phonetic warning system and system main website
12 communication connections.
Wherein, optionally, wherein intelligent terminal control module is intelligent mobile phone terminal 1, and master controller is
The microcontroller of STM32F103RCT6 model.
Specifically, the master controller is connect with the intelligent terminal control module by gsm module 2.
The master controller is connect with the intelligent electric meter phonetic warning system by serial communication module 8.
Network 11 is connect the master controller by wireless communication with the system main website 12.
Intelligent mobile phone terminal 1 is mainly used for receiving the short message of various alarms.
Gsm module 2 is used cooperatively with controller STM32, and intelligent electric meter once detects the route for having electricity consumer family
Short circuit or electric leakage, corresponding alarm message will be dealt on intelligent mobile phone terminal 1.
Specifically, the short-circuit detecting module 7 is used to detect the load current of ammeter wire road；When the load current is big
When the rated value of ammeter, the short-circuit detecting module 7 is triggered to the master controller and sends short-circuit alarming signal, the master control
Device processed is cut off the power and is controlled respectively the intelligent electric meter phonetic warning system according to the short-circuit alarming signal and issues short-circuit language
Sound alarm, the master controller send short-circuit alarming letter to the intelligent terminal control module and the system main website 12 respectively
Breath.
Specifically, the current leakage detection system is for detecting whether ammeter wire road has electric leakage, the current leakage detection system
Including circuit measuring zero phase sequence current 5 and signal processing and amplifying circuit 6.
The signal processing and amplifying circuit 6 are electrically connected to the circuit measuring zero phase sequence current 5, the signal processing with put
Big circuit 6 is electrically connected to the master controller.
When detecting that there is electric leakage in the ammeter wire road, triggers the current leakage detection system and sent to the master controller
The intelligent electric meter language is cut off the power and control respectively to leakage-current alarm signal, the master controller according to the leakage-current alarm signal
Sound alarm system issues electric leakage audio alert, and the master controller is respectively to the intelligent terminal control module and the system master
Stand 12 send leakage-current alarm information.
Specifically, the detection system of opposing electricity-stealing is for detecting whether ammeter wire road has stealing, the detection of opposing electricity-stealing
System includes current detection module 3 and ammeter is uncapped detection module 4.
The current detection module 3 and ammeter detection module 4 of uncapping are electrically connected in the master controller.
When detecting that there is stealing in the ammeter wire road, detection system of opposing electricity-stealing described in triggering is sent out to the master controller
Stealing alarm signal is sent, the master controller controls the intelligent electric meter phonetic warning system according to the stealing alarm signal and sends out
Stealing audio alert out, the master controller send stealing to the intelligent terminal control module and the system main website 12 respectively
Warning message.
Current detection module 3, effect are that detection user only connects either with or without the behavior of power stealing once user sneaks current
To a firewire of ammeter outlet, perhaps if zero curve current detection module 3 detects that firewire or zero curve have an electric current to be
Zero, and another electric current is not zero, illustrate that user is only connected to the single line of ammeter and is using, and another electric wire is not pass through
Ammeter metering, the electric wire drawn privately is in this case, illustrating that user has the behavior of stealing, at this time current detecting
Module 3 will send stealing alarm signal to master controller.
Ammeter detection module 4 of uncapping is used for, if user privately steals the circuit structure implementation that ammeter dismantles repacking ammeter
Electricity, ammeter uncaps detection module 4 will be to master controller transmission stealing alarm signal.
Circuit measuring zero phase sequence current 5, main function are, if the route of user's family has the phenomenon that electric leakage, zero sequence electricity
Current detection circuit 5 will detect that the electric current of inflow and the difference between currents of outflow are not zero, by the signal of current leakage detection system
Processing is handled with amplifying circuit 6, will be sent leakage-current alarm signal to master controller, be triggered main controller controls intelligent electric meter language
Sound alarm system issues leakage-current alarm signal.
The signal processing and amplifying circuit 6 of current leakage detection system, main function are that processing circuit measuring zero phase sequence current 5 passes
The small-signal brought carries out signal working process and amplification, is processed into the binary signal that master controller can identify, together
When also have the function of anti-signal interference.
Short-circuit detecting module 7, main function are to prevent the route of electricity consumer family from short circuit or circuit overload occur, are surpassed
The rated power for crossing intelligent electric meter, burns out ammeter, it is often more important that prevents the electrical appliance of user's family to be burned or because of short
Line temperature caused by road is excessively high to be caused to catch fire, once there is above-mentioned emergency, the short-circuit detecting module 7 of intelligent electric meter will
Notice master controller is automatically cut off the power, while can send short-circuit alarming signal to master controller, can thus reduce user
It is lost caused by family line short.
Intelligent electric meter phonetic warning system includes serial communication module 8, WT588S-16S speech chip 9 and loudspeaker 10.
WT588S-16S speech chip 9, the chip have the advantages of accuracy of identification is high, strong antijamming capability, small power consumption,
Main effect is that the binary system alarm signal for sending master controller is processed and handled, and is converted further into voice
Signal, then send loudspeaker 10 to and carry out audio alert, different alarm signals can be converted into different audio alert signals, side
Just user knows which kind of fault occurred, rather than as traditional buzzer warning, only always in sound, but not
Know it is which kind of line fault.
System main website 12 can be used for sending order or data to intelligent electric meter, while intelligent electric meter can also be sent
It ordering to main website, such power supply enterprise and user can understand all data of electric energy meter at any time, once the electricity of user's family
There is leak current fault in road or user has electric leakage behavior, and the master controller of ammeter will send commands to main website, people from power supply enterprise
Member it is known which user and user address information, facilitate power supply technique personnel to handle.
In conclusion a kind of working principle of intelligent electric meter based on audio alert provided in this embodiment are as follows:
The voice alarm function of the detection short trouble of intelligent electric meter:
When short circuit or circuit overload occurs in the route of electricity consumer family, the short-circuit detecting module 7 of intelligent electric meter can be certainly
It is dynamic to detect high current, it more than the rated current of intelligent electric meter, is just easy to burn out ammeter, causes the electrical appliance quilt of user's family
It burns out or causes to catch fire because line temperature is excessively high caused by short circuit, once there is above-mentioned emergency, intelligence shown in upper figure
If the action current that the electric current that the short-circuit detecting module 7 of energy ammeter detects is greater than setting will be automatically cut off the power, while the
One time can send short-circuit alarming signal to master controller, and master controller receives the short circuit that short-circuit detecting module 7 sends over
After alarm signal, WT588S-16S speech chip 9 is transmitted to by the serial communication module 8 of intelligent electric meter phonetic warning system,
The binary system short-circuit alarming signal that master controller is sent is converted into audio alert signal, finally proceeds to 10 language of loudspeaker
Sound alarm, loudspeaker 10 will call the police and say that " distinguished electricity consumer, intelligent electric meter have been detected by the route in your family and short circuit occur
Failure has been turned off power supply ", while master controller can also trigger gsm module 2 the information of short-circuit alarming with short message or phone
Form is sent on the intelligent mobile phone terminal 1 of electricity consumer and shows, it is that such electricity consumer will know that for what reason tripping, avoids
Ammeter is burnt out, causes the electrical appliance of user's family to be burned or cause to catch fire because line temperature is excessively high caused by short circuit, drops
The low loss of line short fault.
The voice alarm function of the detection leak current fault of intelligent electric meter:
When drain conditions occurs in the route of electricity consumer family, as the insulated hull aging of electric wire or the insulated hull of electric wire are broken
Damage, especially for the electricity consumer in those rural areas, electric shock-prevention safety consciousness is weak, and many familys are all not fill earth leakage protective to open
It closes, if the metal shell of electricity consumer family electric appliance leaks electricity, if not installing the measure of ground connection, such case, once go out
The metal shell electric leakage of existing route or electrical appliance, just has the danger of electric shock, and the zero-sequence current of current leakage detection system detects electricity
Road 5 can automatically detect electric leakage, can cut off the power in time, avoid geting an electric shock because of line electrical leakage, and principle is to work as electricity consumer
As long as the route of family has a firewire or zero curve electric leakage, the electric current of outflow is not equal to the electric current flowed into, zero-sequence current detection
Circuit 5 just generates a faint magnetic field, transmission leakage-current alarm signal to signal processing and amplifying circuit 6 be processed with
After amplification, buckle releaser is pulled open, while leakage-current alarm signal is sent to master controller again, master controller receives detection of electrical leakage system
After the leakage-current alarm signal that the circuit measuring zero phase sequence current 5 of system sends over, pass through the serial ports of intelligent electric meter phonetic warning system
Communication module 8 is transmitted to WT588S-16S speech chip 9, the binary line leakage-current alarm signal that master controller is sent
It is converted into audio alert signal, finally proceeds to 10 audio alert of loudspeaker, loudspeaker 10, which will call the police, says " distinguished electricity consumption
There is leak current fault in family, the route that intelligent electric meter has been detected by your family, for the danger for preventing electric shock, have been turned off power supply ", together
When master controller can also trigger gsm module 2 information of leakage-current alarm is sent to electricity consumer in the form of short message or phone
On intelligent mobile phone terminal 1, such electricity consumer, which will know that, to be any line fault reason and has a power failure, and avoids electricity consumer electric shock
It is dangerous, it is therefore prevented that greatly, ammeter operates always the electricity electric leakage in electricity consumer man, causes a large amount of electricity charge to waste without tripping
The case where, avoid the economic loss of electricity consumer.
The voice alarm function of opposing electricity-stealing of intelligent electric meter:
The current detection module 3 for detection system of opposing electricity-stealing only is connected to a fire of ammeter outlet once user sneaks current
If perhaps zero curve current detection module 3 detects that firewire or zero curve have an electric current to line is zero, and another electric current is not
Zero, illustrate that user is only connected to the single line of ammeter and is using, and another electric wire is not measure by ammeter, is drawn privately
A piece electric wire is in this case, illustrating that user has the behavior of stealing, current detection module 3 will send power stealing automatically
Signal will set out intelligence if the circuit structure that ammeter dismantles repacking ammeter is implemented power stealing privately by user to master controller
Switch inside ammeter, detection system of opposing electricity-stealing module will send stealing alarm signal from trend master controller, once occur
There is the behavior of both the above stealing, intelligent electric meter phonetic warning system will issue voice warning signal language, and " intelligent electric meter is
It detects that you have the behavior of stealing, is the credit file for not influencing you, electricity stealing please be stop." master controller can be by wireless
11 module of communication network transmits the information of user's stealing to network system main website 12, and the background system of the enterprise of power supply can supervise
These electricity consumers for having electricity stealing are controlled, while also credit file can be recorded in the information of stealing user, power supply enterprise
Technical staff is it is known that be which electricity consumer is being sneaked current, so that it may remove site disposal.Power supply enterprise is facilitated to grab electricity stealing
Electricity consumer, reduce the line loss per unit of enterprise, reduce the economic loss of power supply enterprise.
Using the present embodiment, by detection system of opposing electricity-stealing, current leakage detection system, short-circuit detecting module 7 and intelligent electric meter
The technology that phonetic warning system combines, ammeter line short fault, leak current fault can be detected automatically by devising, and be had simultaneously
The intelligent electric meter of audio alert has incorporated the thought that voice alarm function and 2 telecommunication technique of gsm module combine, can be with
Realize the long-range reception alarm message of intelligent electric meter, once there is short trouble, leak current fault, intelligence in the route of electricity consumer family
Ammeter is detected automatically by current leakage detection system, can detecte the failure of user's family electric leakage, while intelligent electric meter system
Short-circuit detecting module 7 can detecte the short trouble of electricity consumer family route, once short circuit current or overload current are more than
The rated value of intelligent electric meter will cut off the power immediately, while carry out audio alert, effectively protect the peace of equipment and the person
Entirely.
The intelligent electric meter based on audio alert, which kind of failure the route for capableing of automatic prompt electricity consumer family is, convenient
Technical staff can quickly find the reason of line fault, and the buzzer of traditional electronic alarm is only always in sound, but
Which kind of failure will not be said is, maintenance personal generally requires investigation for a long time, the reason of can finding line fault, and traditional
Electronic alarm is compared, can failure that is more intelligent and efficiently judging route.To reduce the power off time of electricity consumer, mention
The high service quality of power supply.Using advanced gsm communication alarm module, even electricity consumer outside, as long as electricity consumer man
In route break down, can also receive family line fault alarm message use, such electricity consumer can prior notice
Technical staff repairs to home, rather than needs just to know that family is out of power when electricity consumption in going back home, and avoids influencing electricity consumption
Family normal electricity consumption.Prevention Stealing Electricity Technology can effectively prevent the phenomenon that electricity consumer power stealing, and detection system of opposing electricity-stealing has incorporated electric current inspection
It surveys and game clock lid detects the technology combined, it is more accurate to judge, can effectively reduce the economic loss of power grid.
The above, the above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although referring to before
Stating embodiment, invention is explained in detail, those skilled in the art should understand that: it still can be to preceding
Technical solution documented by each embodiment is stated to modify or equivalent replacement of some of the technical features；And these
It modifies or replaces, the spirit and scope for technical solution of various embodiments of the present invention that it does not separate the essence of the corresponding technical solution.
Claims (7)
1. a kind of intelligent electric meter based on audio alert, which is characterized in that including master controller, current leakage detection system, oppose electricity-stealing
Detection system, short-circuit detecting module, intelligent terminal control module, intelligent electric meter phonetic warning system and system main website；
The master controller is electrically connected with the current leakage detection system, detection system of opposing electricity-stealing and short-circuit detecting module respectively；
The master controller respectively with the intelligent terminal control module, intelligent electric meter phonetic warning system and system master station communication
Connection.
2. a kind of intelligent electric meter based on audio alert according to claim 1, which is characterized in that the master controller with
The intelligent terminal control module is connected by gsm module；
The master controller is connect with the intelligent electric meter phonetic warning system by serial communication module；
The master controller is connected to the network by wireless communication with the system main website.
3. a kind of intelligent electric meter based on audio alert according to claim 2, which is characterized in that the short-circuit detecting mould
Block is used to detect the load current of ammeter wire road；
When the load current is greater than the rated value of ammeter, it is short to master controller transmission to trigger the short-circuit detecting module
The intelligent electric meter voice is cut off the power and control respectively to road alarm signal, the master controller according to the short-circuit alarming signal
Alarm system issues short-circuit audio alert, and the master controller is respectively to the intelligent terminal control module and the system main website
Send short-circuit alarming information.
4. a kind of intelligent electric meter based on audio alert according to claim 3, which is characterized in that the detection of electrical leakage system
System is for detecting whether ammeter wire road has electric leakage；
When detecting that there is electric leakage in the ammeter wire road, triggers the current leakage detection system and sent to the master controller and leaked electricity
The intelligent electric meter voice reporting is cut off the power and control respectively to alarm signal, the master controller according to the leakage-current alarm signal
Alert system issues electric leakage audio alert, and the master controller is sent out to the intelligent terminal control module and the system main website respectively
Send leakage-current alarm information.
5. a kind of intelligent electric meter based on audio alert according to claim 4, which is characterized in that the detection of opposing electricity-stealing
System is for detecting whether ammeter wire road has stealing；
When detecting that there is stealing in the ammeter wire road, detection system of opposing electricity-stealing described in triggering is stolen to master controller transmission
Electric alarm signal, the master controller control the intelligent electric meter phonetic warning system sending according to the stealing alarm signal and steal
Electricity voice alarm, the master controller send stealing alarm signal to the intelligent terminal control module and the system main website respectively
Breath.
6. a kind of intelligent electric meter based on audio alert according to claim 4, which is characterized in that the detection of electrical leakage system
System includes circuit measuring zero phase sequence current and signal processing and amplifying circuit；
The signal processing and amplifying circuit are electrically connected to the circuit measuring zero phase sequence current, the signal processing and amplifying circuit
It is electrically connected to the master controller.
7. a kind of intelligent electric meter based on audio alert according to claim 5, which is characterized in that the detection of opposing electricity-stealing
System includes current detection module and ammeter is uncapped detection module；
The current detection module and ammeter detection module of uncapping are electrically connected in the master controller.
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| CN201910543893.7A CN110108915A (en) | 2019-06-21 | 2019-06-21 | A kind of intelligent electric meter based on audio alert |
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| CN201910543893.7A CN110108915A (en) | 2019-06-21 | 2019-06-21 | A kind of intelligent electric meter based on audio alert |
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