CN105424995A - Intelligent antitheft electric meter - Google Patents
Intelligent antitheft electric meter Download PDFInfo
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- CN105424995A CN105424995A CN201510755936.XA CN201510755936A CN105424995A CN 105424995 A CN105424995 A CN 105424995A CN 201510755936 A CN201510755936 A CN 201510755936A CN 105424995 A CN105424995 A CN 105424995A
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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
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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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Abstract
The invention relates to an intelligent antitheft electric meter, and belongs to the field of electrical equipment. The electric meter comprises an electric meter body, a transformer, an intelligent controller, and a voltage regulator. The electric meter body is in series connection with the transformer, and the voltage regulator disposed on the transformer is used for controlling the output voltage of the transformer. The primary and secondary sides of the transformer are respectively provided with a voltage sensor, and the voltage sensors are connected with the intelligent controller. An input voltage of the transformer is different from the working voltage of a load, and the output voltage is the working voltage of the load. The transformer is in series connection with the electric meter body, and then can convert a high-voltage into a low voltage, thereby facilitating the high-voltage transmission of a cable, facilitating the saving of electric energy, and reducing the circuit loss of a transmission line. In addition, the above structure can supply a voltage, which cannot be directly used by common electrical equipment, at the primary side of the transformer, can avoid electricity stealing, and improves the safety of a power grid. The electric meter can guarantee that the load cannot be directly connected to an input end of the electric meter for direct use, and avoids electricity stealing.
Description
Technical field
The present invention relates to a kind of intelligent anti-theft electricity ammeter, belong to electrical equipment.
Background technology
Electric energy meter is used to the instrument measuring electric energy, and also known as watt-hour meter, energy meter, kilowatt-hour table, refers to the instrument measuring various electrical quantities.The watt-hour meter of current use.Off-balancesheet lead-in wire reaches electricity consumption and the cheating effect of not having good luck or having good luck less current coil short circuit in table.This power stealing mode is very easy, namely two of watt-hour meter joint short circuits can be achieved the goal at off-balancesheet one trifle wire.This method is not destroyed lead sealing, watchcase, separately need not be connect open-wire line, and is easy to camouflage and meets an urgent need ruin mark, is thus adopted by a lot of user.This is a kind of potential serious social phenomenon of seeking private gain at public expense, spending the energy freely.Based on above-mentioned phenomenon, the present invention spy proposes a kind of Anti-current stealing electric meter to eliminate these bad phenomenon.
The ammeter of present dress, install concentratedly, and add the additional strip of paper used for sealing of affixing one's seal of aluminium envelope, terminal box and table body some places all so simultaneously, fill the chest of ammeter or lock, on screw, load onto aluminium envelope after screwing on screw, if it is damaged to be stained with any one thing of strip of paper used for sealing simultaneously, all belonging to robber's electrical travelling is.
Present robber's electrical phenomena remains incessant after repeated prohibition, and the safety not only compromising electrical network brings hidden danger for electrical equipment and personal safety simultaneously.And high tension transmission can be realized further, improve security and the energy saving of high tension transmission, the loss of less electrical energy in transmitting procedure.
Summary of the invention
The object of the invention is to: for above-mentioned Problems existing, a kind of intelligent anti-theft electricity ammeter is provided, effectively prevent from stealing electrical phenomena, steal electricity often user in order to save money, and household electrical appliance or other loads being directly connected to the input end of ammeter, the security that this phenomenon not only destroys electrical network has carried out hidden danger for personal securing band simultaneously.Can need or different supply voltages according to difference, regulate turn ratio, realize the object of the electric energy meter of safe handling.By being the voltage that directly can not be used by load by the voltage transformation of ammeter outgoing side, fundamentally avoiding not by robber's electrical phenomena of ammeter line, improving the security of electrical network.Insect expelling device, can carry out desinsection in ammeter, after avoiding insect to enter ammeter, cause short circuit, affects the life-span of ammeter and normal use, ensures the security of electrical network.
Technical scheme of the present invention is as follows:
The invention discloses a kind of intelligent anti-theft electricity ammeter, comprise ammeter body, transformer, intelligent controller and pressure regulator; Ammeter body and transformer series, the pressure regulator that this transformer is arranged is for control transformer output voltage; First and second side is on the transformer equipped with voltage sensor, and voltage sensor is connected with intelligent controller, and the input voltage of transformer is different from the operating voltage of load, input voltage is this loaded work piece voltage.
Further, the output voltage of described transformer is 200-240V or 342-418V; The input voltage of described transformer is less than 200V or 240-342V or is greater than 418V.
Further, the input end of ammeter body is connected with Circuit Fault on Secondary Transformer.
Further, transformer is fixedly connected with ammeter body, and its junction is provided with protecting crust, and this protecting crust uses lead sealing.
Further, also comprise the housing of insulation, described transformer and ammeter body are located in this housing, in housing, be also provided with insect expelling device, and insect expelling device comprises expelling parasite tank, solenoid valve, shower nozzle by placed in series; At expelling parasite tank built with pesticide, solenoid control insect expelling device opens and closes, and is used for spray insecticide at shower nozzle; Shower nozzle is also provided with fan blower, and air blast function is blown into the speed of 20-25m/s the column air-flow that radius is 5mm.
Further, described transformer is three phase transformation transformers; Described ammeter body is three-phase electric energy meter.
Further, the output terminal of described transformer is provided with relay.
Due to said mechanism, after on transformer series to ammeter body, can be low pressure by high pressure converted, be conducive to the high-voltage transmission of cable, be conducive to the saving of electric energy, reduce the circuit loss on transmission line, in addition, this structure at transformer primary side, can provide a kind of voltage that directly can not be used by conventional electrical equipment, the phenomenon of sneaking current can be avoided to occur, strengthen electric network security.Can be used directly by the proof load input end that cannot be directly connected to ammeter, avoid the phenomenon of sneaking current.The input end that can be arranged on transformer of ammeter body also can be arranged on the output terminal of transformer.Can need or different supply voltages according to difference, regulate turn ratio, realize the object of the electric energy meter of safe handling.By being the voltage that directly can not be used by load by the voltage transformation of ammeter outgoing side, fundamentally avoiding not by robber's electrical phenomena of ammeter line, improving the security of electrical network.Insect expelling device, can carry out desinsection in ammeter, after avoiding insect to enter ammeter, cause short circuit, affects the life-span of ammeter and normal use, ensures the security of electrical network.
Further, its control system comprises:
Control module, comprises intelligent controller, and this intelligent controller comprises MCU, display and keyboard, and display is connected with MCU respectively with keyboard;
Anti-theft unit, comprises the transformer be connected on ammeter body, and this transformer is used for the operating voltage voltage being different from loaded work piece voltage being become load; Transformer output terminal is provided with relay, and the control end of this relay is connected with MCU;
Voltage detection unit, comprises two voltage sensors being arranged on transformer first and second side; This voltage sensor is electrically connected with MCU, so that MCU gathers the voltage of transformer both sides;
Pressure regulation unit, comprises setting pressure regulator on the transformer, and this pressure regulator realizes the adjustment of output voltage by the turn ratio of the coil regulating this transformer place in circuit part; The primary side of transformer and the coil of secondary side are equipped with the pressure regulation node of multiple number of turn for the access of control transformer coil, and its secondary side pressure regulation node is more than primary side pressure regulation node, and pressure regulation node is connected with pressure regulator respectively;
Communication unit, comprises communicator and loudspeaker, and communicator is used for the mobile terminal being sent information to binding by grid service device; Loudspeaker controls sounding by MCU;
Expelling parasite unit, comprises insect expelling device, and insect expelling device comprises expelling parasite tank, solenoid valve, shower nozzle by placed in series; At expelling parasite tank built with pesticide, solenoid control insect expelling device opens and closes, and is used for spray insecticide at shower nozzle; Shower nozzle is also provided with fan blower, and air blast function is blown into the speed of 20-25m/s the column air-flow that radius is 5mm;
Control module is connected with anti-theft unit, voltage detection unit, pressure regulation unit, expelling parasite unit and communication unit respectively, and for controlling each unit matching action.
Due to said system, control by MCU is unified, so that realize the intelligent anti-theft electricity of ammeter, its display controlled can show the magnitude of voltage and power consumption situation that detect, coordinate keyboard can realize query function and controlling functions easily, voltage detection unit accurately can detect the magnitude of voltage at transformer two ends, prevents the output voltage of transformer not identical with the operating voltage of load, and the damage of the equipment caused.Pressure regulation unit can realize the control of transformer turn ratio, is conducive to the output voltage of accurate adjustment transformer, multiple pressure regulation nodes of first and second side, and the voltage large span realizing secondary side regulates, and can realize the voltage trim of primary side equally; Realize the constant output of voltage; Communication unit is used for coordinating the connection realized with grid service device with MCU, be convenient to network control and the operation of this ammeter, for the control of mobile phone terminal to ammeter provides possibility, be conducive to realizing network to supplement with money, on the other hand, the suitable cooperation of these unit, can the quick use of implement device and stability contorting, be conducive to the popularization of device, reduce the use difficulty of equipment.
Further, the control method of this control system:
(1), ammeter is accessed electrical network after, detected respectively the voltage of transformer first and second side by voltage sensor simultaneously;
(2), MCU gathers the analog voltage signal that voltage sensor senses arrives, and is converted to digital voltage signal storage;
(3), interval 60ms, MCU gathers again, transform, store the voltage of transformer first and second side;
(4), after MCU stores 8 digital voltage signals, MCU extracts the digital voltage signal stored and carries out average voltage calculating, calculates voltage maximum changing range simultaneously; If voltage maximum changing range is not more than the maximum changing range value prestored in MCU, then record this voltage maximum changing range, average voltage; Otherwise delete the digital voltage signal stored;
(5), interval 5s, repeat step (3)-(4); Again obtain average voltage, voltage maximum changing range;
(6), the average voltage obtained in step (4), (5), voltage maximum changing range are compared respectively, comparative result reach in MCU be located at value time, in MCU, the average voltage of given step (4) or (5) average voltage is effective voltage value;
(7), MCU is not equal to the operating voltage of load to Circuit Fault on Secondary Transformer voltage by voltage sensor senses;
(8), MCU controls pressure regulator action, and then changes the coil of a Circuit Fault on Secondary Transformer place in circuit; After 2-3s, MCU detects and the homophony difference of calculating transformer secondary side voltage and loaded work piece voltage;
(9) if homophony difference is greater than setting value, repeat step (8) and be not more than setting value to homophony difference;
(10), after homophony difference is less than setting value, MCU controls the coil that pressure regulator changes a transformer primary side place in circuit; After 1-1.5s, MCU detects and the fine setting difference of calculating transformer secondary side voltage and loaded work piece voltage;
(11), repetition step (10) is less than setting value, then pilot relay conducting to fine setting difference, and is load supplying.
Due to said method, by repetitive measurement and data screening, improve the accuracy measured, ensure that quality and the stability of power supply, can the stably measured of implement device, improve availability and the applicability of ammeter, adopt the data processing method optimized, discharge rub-out signal, and by useful signal novel fast processing in MCU, thus improve the stability of measuring method, in addition, this method adopts rational sampling interval time, can according to the Changing Pattern of alternating current, extract the position of alternating current difference fluctuation, inspect voltage by random samples on the whole, the accuracy of further raising result.The accuracy controlling of transformer can be realized; be conducive to the reasonable output realizing ammeter; load equipment can be protected; and then improve the life-span of equipment; thus reach optimized output; thisly adjustment is carried out to first less to coil turn side be conducive to Rapid Variable Design voltage; thus realize the quick adaptation of voltage; after regulating the position of small turn number coil place in circuit or access current segment; by the more coil place in circuit of the number of turn or access current segment number, realize the fine adjustment of output voltage.Be conducive to obtaining more stable output voltage.
In sum, owing to have employed technique scheme, the invention has the beneficial effects as follows:
1, structure is simple, novel in design, achieves the object of preventing fraudulent use of electricity, improves electric network security;
2, this design can promote the transmission voltage of ammeter primary side, can be conducive to the long-distance transmissions realizing electric energy, decrease electric energy loss.
3, this design can directly be reequiped on original ammeter, is easy to promotion and application, is conducive to the security of promotion equipment.
Accompanying drawing explanation
Fig. 1 is intelligent anti-theft electricity electric meter system figure in the present invention;
Mark in figure: 1-control module, the anti-theft unit of 2-, 3-voltage detection unit, 4-pressure regulation unit, 5-communication unit, 6-expelling parasite unit.
Embodiment
Below in conjunction with accompanying drawing, the present invention is described in detail.
In order to make object of the present invention, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
specific embodiment 1:
A kind of intelligent anti-theft electricity ammeter of the present invention, comprises ammeter body, transformer, intelligent controller and pressure regulator; Ammeter body and transformer series, the pressure regulator that this transformer is arranged is for control transformer output voltage; First and second side is on the transformer equipped with voltage sensor, and voltage sensor is connected with intelligent controller, and the input voltage of transformer is different from the operating voltage of load, input voltage is this loaded work piece voltage.
The output voltage of transformer is 200-240V or 342-418V; The input voltage of transformer is less than 200V or 240-342V or is greater than 418V.
The input end of ammeter body is connected with Circuit Fault on Secondary Transformer.
Transformer is fixedly connected with ammeter body, and its junction is provided with protecting crust, and this protecting crust uses lead sealing.
Also comprise the housing of insulation, transformer and ammeter body are located in this housing, in housing, be also provided with insect expelling device, and insect expelling device comprises expelling parasite tank, solenoid valve, shower nozzle by placed in series; At expelling parasite tank built with pesticide, solenoid control insect expelling device opens and closes, and is used for spray insecticide at shower nozzle; Shower nozzle is also provided with fan blower, and air blast function is blown into the speed of 20-25m/s the column air-flow that radius is 5mm.
Transformer is three phase transformation transformers; Ammeter body is three-phase electric energy meter.
The output terminal of transformer is provided with relay.
Namely operating voltage can be used for the voltage of the power supply that load normally works, and adopts nonoperating voltage to power and easily cause load overload or overcurrent, or cannot normally run, the situation such as under-voltage, operating voltage can be considered the scope range of the fluctuation of voltage of rated voltage with load and permission.
Due to said mechanism, after on transformer series to ammeter body, can be low pressure by high pressure converted, be conducive to the high-voltage transmission of cable, be conducive to the saving of electric energy, reduce the circuit loss on transmission line, in addition, this structure at transformer primary side, can provide a kind of voltage that directly can not be used by conventional electrical equipment, the phenomenon of sneaking current can be avoided to occur, strengthen electric network security.Can be used directly by the proof load input end that cannot be directly connected to ammeter, avoid the phenomenon of sneaking current.The input end that can be arranged on transformer of ammeter body also can be arranged on the output terminal of transformer.Can need or different supply voltages according to difference, regulate turn ratio, realize the object of the electric energy meter of safe handling.By being the voltage that directly can not be used by load by the voltage transformation of ammeter outgoing side, fundamentally avoiding not by robber's electrical phenomena of ammeter line, improving the security of electrical network.Insect expelling device, can carry out desinsection in ammeter, after avoiding insect to enter ammeter, cause short circuit, affects the life-span of ammeter and normal use, ensures the security of electrical network.
specific embodiment 2: as shown in Figure 1,
According to the intelligent anti-theft electricity ammeter of specific embodiment 1, its control system comprises:
Control module 1, comprises intelligent controller, and this intelligent controller comprises MCU, display and keyboard, and display is connected with MCU respectively with keyboard;
Anti-theft unit 2, comprises the transformer be connected on ammeter body, and this transformer is used for the operating voltage voltage being different from loaded work piece voltage being become load; Transformer output terminal is provided with relay, and the control end of this relay is connected with MCU;
Voltage detection unit 3, comprises two voltage sensors being arranged on transformer first and second side; This voltage sensor is electrically connected with MCU, so that MCU gathers the voltage of transformer both sides;
Pressure regulation unit 4, comprises setting pressure regulator on the transformer, and this pressure regulator realizes the adjustment of output voltage by the turn ratio of the coil regulating this transformer place in circuit part; The primary side of transformer and the coil of secondary side are equipped with the pressure regulation node of multiple number of turn for the access of control transformer coil, and its secondary side pressure regulation node is more than primary side pressure regulation node, and pressure regulation node is connected with pressure regulator respectively;
Communication unit 5, comprises communicator and loudspeaker, and communicator is used for the mobile terminal being sent information to binding by grid service device; Loudspeaker controls sounding by MCU;
Expelling parasite unit 6, comprises insect expelling device, and insect expelling device comprises expelling parasite tank, solenoid valve, shower nozzle by placed in series; At expelling parasite tank built with pesticide, solenoid control insect expelling device opens and closes, and is used for spray insecticide at shower nozzle; Shower nozzle is also provided with fan blower, and air blast function is blown into the speed of 20-25m/s the column air-flow that radius is 5mm;
Control module 1 is connected with anti-theft unit 2, voltage detection unit 3, pressure regulation unit 4, expelling parasite unit 6 and communication unit 5 respectively, and for controlling each unit matching action.
Due to said system, control by MCU is unified, so that realize the intelligent anti-theft electricity of ammeter, its display controlled can show the magnitude of voltage and power consumption situation that detect, coordinate keyboard can realize query function and controlling functions easily, voltage detection unit 3 accurately can detect the magnitude of voltage at transformer two ends, prevents the output voltage of transformer not identical with the operating voltage of load, and the damage of the equipment caused.Pressure regulation unit 4 can realize the control of transformer turn ratio, is conducive to the output voltage of accurate adjustment transformer, multiple pressure regulation nodes of first and second side, and the voltage large span realizing secondary side regulates, and can realize the voltage trim of primary side equally; Realize the constant output of voltage; Communication unit is used for coordinating the connection realized with grid service device with MCU, be convenient to network control and the operation of this ammeter, for the control of mobile phone terminal to ammeter provides possibility, be conducive to realizing network to supplement with money, on the other hand, the suitable cooperation of these unit, can the quick use of implement device and stability contorting, be conducive to the popularization of device, reduce the use difficulty of equipment.
specific embodiment 3:
According to the control system of the intelligent anti-theft electricity ammeter of specific embodiment 2, its control method:
(1), ammeter is accessed electrical network after, detected respectively the voltage of transformer first and second side by voltage sensor simultaneously;
(2), MCU gathers the analog voltage signal that voltage sensor senses arrives, and is converted to digital voltage signal storage;
(3), interval 60ms, MCU gathers again, transform, store the voltage of transformer first and second side;
(4), after MCU stores 8 digital voltage signals, MCU extracts the digital voltage signal stored and carries out average voltage calculating, calculates voltage maximum changing range simultaneously; If voltage maximum changing range is not more than the maximum changing range value prestored in MCU, then record this voltage maximum changing range, average voltage; Otherwise delete the digital voltage signal stored;
(5), interval 5s, repeat step (3)-(4); Again obtain average voltage, voltage maximum changing range;
(6), the average voltage obtained in step (4), (5), voltage maximum changing range are compared respectively, comparative result reach in MCU be located at value time, in MCU, the average voltage of given step (4) or (5) average voltage is effective voltage value;
(7), MCU is not equal to the operating voltage of load to Circuit Fault on Secondary Transformer voltage by voltage sensor senses;
(8), MCU controls pressure regulator action, and then changes the coil of a Circuit Fault on Secondary Transformer place in circuit; After 2-3s, MCU detects and the homophony difference of calculating transformer secondary side voltage and loaded work piece voltage;
(9) if homophony difference is greater than setting value, repeat step (8) and be not more than setting value to homophony difference;
(10), after homophony difference is less than setting value, MCU controls the coil that pressure regulator changes a transformer primary side place in circuit; After 1-1.5s, MCU detects and the fine setting difference of calculating transformer secondary side voltage and loaded work piece voltage;
(11), repetition step (10) is less than setting value, then pilot relay conducting to fine setting difference, and is load supplying.
Due to said method, by repetitive measurement and data screening, improve the accuracy measured, ensure that quality and the stability of power supply, can the stably measured of implement device, improve availability and the applicability of ammeter, adopt the data processing method optimized, discharge rub-out signal, and by useful signal novel fast processing in MCU, thus improve the stability of measuring method, in addition, this method adopts rational sampling interval time, can according to the Changing Pattern of alternating current, extract the position of alternating current difference fluctuation, inspect voltage by random samples on the whole, the accuracy of further raising result.The accuracy controlling of transformer can be realized; be conducive to the reasonable output realizing ammeter; load equipment can be protected; and then improve the life-span of equipment; thus reach optimized output; thisly adjustment is carried out to first less to coil turn side be conducive to Rapid Variable Design voltage; thus realize the quick adaptation of voltage; after regulating the position of small turn number coil place in circuit or access current segment; by the more coil place in circuit of the number of turn or access current segment number, realize the fine adjustment of output voltage.Be conducive to obtaining more stable output voltage.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all any amendments done within the spirit and principles in the present invention, equivalent replacement and improvement etc., all should be included within protection scope of the present invention.
Claims (9)
1. an intelligent anti-theft electricity ammeter, is characterized in that, comprise ammeter body, transformer, intelligent controller and pressure regulator; Ammeter body and transformer series, the pressure regulator that this transformer is arranged is for control transformer output voltage; First and second side is on the transformer equipped with voltage sensor, and voltage sensor is connected with intelligent controller, and the input voltage of transformer is different from the operating voltage of load, input voltage is this loaded work piece voltage.
2. intelligent anti-theft electricity ammeter according to claim 1, it is characterized in that, the output voltage of described transformer is 200-240V or 342-418V; The input voltage of described transformer is less than 200V or 240-342V or is greater than 418V.
3. intelligent anti-theft electricity ammeter according to claim 2, it is characterized in that, the input end of ammeter body is connected with Circuit Fault on Secondary Transformer.
4. intelligent anti-theft electricity ammeter according to claim 3, it is characterized in that, transformer is fixedly connected with ammeter body, and its junction is provided with protecting crust, and this protecting crust uses lead sealing, and its junction is provided with protecting crust, and this protecting crust uses lead sealing.
5. intelligent anti-theft electricity ammeter according to claim 4, it is characterized in that, also comprise the housing of insulation, described transformer and ammeter body are located in this housing, in housing, be also provided with insect expelling device, insect expelling device comprises expelling parasite tank, solenoid valve, shower nozzle by placed in series; At expelling parasite tank built with pesticide, solenoid control insect expelling device opens and closes, and is used for spray insecticide at shower nozzle; Shower nozzle is also provided with fan blower, and air blast function is blown into the speed of 20-25m/s the column air-flow that radius is 5mm.
6. intelligent anti-theft electricity ammeter according to claim 5, it is characterized in that, described transformer is three phase transformation transformers; Described ammeter body is three-phase electric energy meter.
7. intelligent anti-theft electricity ammeter according to claim 6, it is characterized in that, the output terminal of described transformer is provided with relay.
8. the intelligent anti-theft electricity ammeter according to any one of claim 1-7, it is characterized in that, its control system comprises:
Control module, comprises intelligent controller, and this intelligent controller comprises MCU, display and keyboard, and display is connected with MCU respectively with keyboard;
Anti-theft unit, comprises the transformer be connected on ammeter body, and this transformer is used for the operating voltage voltage being different from loaded work piece voltage being become load; Transformer output terminal is provided with relay, and the control end of this relay is connected with MCU;
Voltage detection unit, comprises two voltage sensors being arranged on transformer first and second side; This voltage sensor is electrically connected with MCU, so that MCU gathers the voltage of transformer both sides;
Pressure regulation unit, comprises setting pressure regulator on the transformer, and this pressure regulator realizes the adjustment of output voltage by the turn ratio of the coil regulating this transformer place in circuit part; The primary side of transformer and the coil of secondary side are equipped with the pressure regulation node of multiple number of turn for the access of control transformer coil, and its secondary side pressure regulation node is more than primary side pressure regulation node, and pressure regulation node is connected with pressure regulator respectively;
Communication unit, comprises communicator and loudspeaker, and communicator is used for the mobile terminal being sent information to binding by grid service device; Loudspeaker controls sounding by MCU;
Expelling parasite unit, comprises insect expelling device, and insect expelling device comprises expelling parasite tank, solenoid valve, shower nozzle by placed in series; At expelling parasite tank built with pesticide, solenoid control insect expelling device opens and closes, and is used for spray insecticide at shower nozzle; Shower nozzle is also provided with fan blower, and air blast function is blown into the speed of 20-25m/s the column air-flow that radius is 5mm;
Control module is connected with anti-theft unit, voltage detection unit, pressure regulation unit, expelling parasite unit and communication unit respectively, and for controlling each unit matching action.
9. intelligent anti-theft electricity ammeter according to claim 8, is characterized in that, the control method of this control system:
(1), ammeter is accessed electrical network after, detected respectively the voltage of transformer first and second side by voltage sensor simultaneously;
(2), MCU gathers the analog voltage signal that voltage sensor senses arrives, and is converted to digital voltage signal storage;
(3), interval 60ms, MCU gathers again, transform, store the voltage of transformer first and second side;
(4), after MCU stores 8 digital voltage signals, MCU extracts the digital voltage signal stored and carries out average voltage calculating, calculates voltage maximum changing range simultaneously; If voltage maximum changing range is not more than the maximum changing range value prestored in MCU, then record this voltage maximum changing range, average voltage; Otherwise delete the digital voltage signal stored;
(5), interval 5s, repeat step (3)-(4); Again obtain average voltage, voltage maximum changing range;
(6), the average voltage obtained in step (4), (5), voltage maximum changing range are compared respectively, comparative result reach in MCU be located at value time, in MCU, the average voltage of given step (4) or (5) average voltage is effective voltage value;
(7), MCU is not equal to the operating voltage of load to Circuit Fault on Secondary Transformer voltage by voltage sensor senses;
(8), MCU controls pressure regulator action, and then changes the coil of a Circuit Fault on Secondary Transformer place in circuit; After 2-3s, MCU detects and the homophony difference of calculating transformer secondary side voltage and loaded work piece voltage;
(9) if homophony difference is greater than setting value, repeat step (8) and be not more than setting value to homophony difference; ;
(10), after homophony difference is less than setting value, MCU controls the coil that pressure regulator changes a transformer primary side place in circuit; After 1-1.5s, MCU detects and the fine setting difference of calculating transformer secondary side voltage and loaded work piece voltage;
(11), repetition step (10) is less than setting value, then pilot relay conducting to fine setting difference, and is load supplying.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107091945A (en) * | 2017-05-04 | 2017-08-25 | 国网天津静海供电有限公司 | One kind prevents strong magnetic stealing intelligent meter |
| CN109490620A (en) * | 2018-10-23 | 2019-03-19 | 宁波三星智能电气有限公司 | Stealing event detecting method based on voltage chopping |
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| CN109490620B (en) * | 2018-10-23 | 2020-10-27 | 宁波三星智能电气有限公司 | Voltage chopping-based electricity stealing event detection method |
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