CN203119623U - Electricity larceny prevention device - Google Patents
Electricity larceny prevention device Download PDFInfo
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- CN203119623U CN203119623U CN2013200566922U CN201320056692U CN203119623U CN 203119623 U CN203119623 U CN 203119623U CN 2013200566922 U CN2013200566922 U CN 2013200566922U CN 201320056692 U CN201320056692 U CN 201320056692U CN 203119623 U CN203119623 U CN 203119623U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/30—Systems integrating technologies related to power network operation and communication or information technologies for improving the carbon footprint of the management of residential or tertiary loads, i.e. smart grids as climate change mitigation technology in the buildings sector, including also the last stages of power distribution and the control, monitoring or operating management systems at local level
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
- Y04S20/20—End-user application control systems
- Y04S20/242—Home appliances
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Abstract
The utility model relates to an electricity larceny prevention device. The device adopts a technical measure aiming at electricity larceny, characteristic attributes of sinusoidal alternating current are disturbed at a power supply terminal, the alternating current is then transmitted to a power transmission line, a reverse technical measure is adopted at a power utilization terminal, and the characteristic attributes of the disturbed sinusoidal alternating current are recovered. Thus, for illegal users who steal electricity on the way of power transmission, stolen electric energy is non-normal alternating current and cannot be normally used, and may even cause part of household appliances to be damaged, so that the illegal users lose a driving force to steal electricity, and do not steal electricity gradually; and for legal users, since the reverse technical measure is adopted at the power utilization terminal, and the characteristic attributes of the disturbed sinusoidal alternating current are recovered, so that electricity is used as using a common mains supply, no difference exists.
Description
Technical field
The utility model relates to a kind of anti-electricity-theft device.
Background technology
Unattended electricity consumption facility, as communication base station etc., public electric wire net is generally taken from its electricity consumption nearby, be transported to the electricity consumption facility through electric power meter, switch and safety protection device, transmission of electricity electric wire (or cable) etc., as communication base station etc., show as Fig. 1: the high pressure civil power produces 220VAC (single-phase) voltage that uses at present by the transformer transformation, and perhaps the 380VAC of three-phase is sent to the electricity consumption end by the transmission of electricity electric wire from feeder ear.As can be seen from Figure 1, the transmission of electricity electric wire (or cable) from feeder ear to the electricity consumption end is to expose out of doors, and this will become the target that the disabled user sets about.Normally backguy privately in this section supply line of disabled user is directly stolen.
The utility model content
The utility model provides a kind of anti-electricity-theft device, with solve can't prevent the disabled user on the transmission of electricity electric wire between the electricity consumption end of feeder ear and validated user privately backguy directly steal the technical problem of electricity.
In order to solve above technical problem the technical solution of the utility model be:
A kind of anti-electricity-theft device comprises feeder ear and electricity consumption end and with the transmission of electricity electric wire of feeder ear and electricity consumption end; Be provided with the phase splitter that the AC wave waveform is separated into positive half cycle phase waveform and negative half period phase waveform at described feeder ear, be provided with the positive half cycle phase waveform of AC wave waveform and negative half period phase waveform in conjunction with the device mutually that closes that reverts to complete AC wave at described electricity consumption end, described transmission of electricity electric wire is sent to the AC wave waveform of positive half cycle phase waveform and negative half period phase waveform respectively and closes device mutually from described phase splitter.
Further, in the above-mentioned anti-electricity-theft device: described transmission of electricity electric wire comprises positive half cycle phase waveform transmission line, negative half period phase waveform transmission line and zero line transmission line; Described phase splitter comprises diode D1 and diode D2; The anode of described diode D1 connects power input, and the negative electrode of diode D1 connects positive half cycle phase waveform transmission line; The negative electrode of described diode D2 connects power input, and the anode of diode D2 connects negative half period phase waveform transmission line; The described phase device that closes comprises unidirectional controllable silicon S CR1 and unidirectional controllable silicon S CR2; The anode of described unidirectional controllable silicon S CR1 connects positive half cycle phase waveform transmission line, and the negative electrode of unidirectional controllable silicon S CR1 connects output, and the anode of unidirectional controllable silicon S CR2 connects output, and the negative electrode of unidirectional controllable silicon S CR2 connects negative half period phase waveform transmission line; The grid of described unidirectional controllable silicon S CR1 and unidirectional controllable silicon S CR2 is connection control circuit respectively, and described control circuit is control unidirectional controllable silicon S CR2 conducting when positive half cycle, when negative half period, and control and unidirectional controllable silicon S CR1 conducting.
Further, in the above-mentioned anti-electricity-theft device: described control circuit comprises phase place zero cross detection circuit, microprocessor and light-coupled isolation circuits for triggering; Described zero cross detection circuit comprises positive half cycle phase waveform zero cross detection circuit and negative half period phase waveform zero cross detection circuit; Described light-coupled isolation circuits for triggering comprise the first light-coupled isolation circuits for triggering that trigger unidirectional controllable silicon S CR1 and the second light-coupled isolation circuits for triggering that trigger unidirectional controllable silicon S CR2; The output of described positive half cycle phase waveform zero cross detection circuit and negative half period phase waveform zero cross detection circuit connects described microprocessor respectively, and the control end of the described first light-coupled isolation circuits for triggering and the second light-coupled isolation circuits for triggering connects microprocessor output respectively
Further, in the above-mentioned anti-electricity-theft device: described positive half cycle phase waveform zero cross detection circuit comprises optocoupler U4, current-limiting resistance R3, breakdown diode ZD1; The anode of the input light-emitting diode of described optocoupler U4 connects positive half cycle phase waveform transmission line by described current-limiting resistance R3, the negative pole of described breakdown diode connects the anode of the input light-emitting diode of described optocoupler U4, and the positive pole of described breakdown diode connects negative electrode and the zero line transmission line of the input light-emitting diode of described optocoupler U4; The collector electrode of the output triode of described optocoupler U4 connects described microprocessor, grounded emitter; Described negative half period phase waveform zero cross detection circuit comprises optocoupler U5, current-limiting resistance R4, breakdown diode ZD2, the negative electrode of the input light-emitting diode of described optocoupler U5 connects negative half period phase waveform transmission line by described current-limiting resistance R4, the positive pole of described breakdown diode ZD2 connects the negative electrode of the input light-emitting diode of described optocoupler U5, and the negative pole of described breakdown diode connects anode and the connecting to neutral line transmission line of the input light-emitting diode of described optocoupler U5; The collector electrode of the output triode of described optocoupler U5 connects described microprocessor, grounded emitter.
Further, in the above-mentioned anti-electricity-theft device: the described first light-coupled isolation circuits for triggering comprise optocoupler U1, current-limiting resistance R1; Described optocoupler U1 input is light-emitting diode, and output is photosensitive two-terminal switch element; The anode of the light-emitting diode of described optocoupler U1 connects power supply, negative electrode connects microprocessor output, one end of the photosensitive two-terminal switch element of described optocoupler U1 connects positive half cycle phase waveform transmission line, the grid of the described unidirectional controllable silicon S CR1 of another termination by described current-limiting resistance R1; The described second light-coupled isolation circuits for triggering comprise optocoupler U2, current-limiting resistance R2; Described optocoupler U2 input is light-emitting diode, and output is photosensitive two-terminal switch element; The anode of the light-emitting diode of described optocoupler U2 connects power supply, and negative electrode connects microprocessor output, and an end of the photosensitive two-terminal switch element of described optocoupler U2 engages phase device output by described current-limiting resistance R2, through load connecting to neutral line transmission line; The grid of the described unidirectional controllable silicon S CR2 of another termination.
Further, in the above-mentioned anti-electricity-theft device: be provided with the relay of being controlled by microprocessor at the photosensitive two-terminal switch element two ends of described optocoupler U1 and the photosensitive two-terminal switch element two ends of optocoupler U2, its normally-closed contact is connected on the photosensitive two-terminal switch element two ends of described optocoupler U1 and the photosensitive two-terminal switch element two ends of optocoupler U2.
Further, in the above-mentioned anti-electricity-theft device: also comprise the communication port with control centre, described microprocessor links to each other with control centre by described communication port, control centre is authorized the anti-electricity-theft device of validated user by communication port, utilize microprocessor to make described first and second light-coupled isolation circuits for triggering export trigger impulse in turn, make SCR1, SCR2 take turns conducting.
The utility model makes the electric wave signal that does not have to recover be not suitable for most household electrical appliance uses by the wave character that changes electric wave, makes the disabled user lose stealing power, thereby reduces the stolen chance of electric power.
Below with reference to drawings and Examples, the utility model is carried out comparatively detailed explanation.
Description of drawings
Fig. 1 is the power supply-distribution system schematic diagram;
Fig. 2 is the utility model embodiment 1 anti-electricity-theft device schematic diagram;
Fig. 3 is the positive half cycle phase waveform zero cross detection circuit schematic diagram that the utility model embodiment 1 adopts;
Fig. 4 is the negative half period phase waveform zero cross detection circuit schematic diagram that the utility model embodiment 1 adopts;
Fig. 5 is the optocoupler circuits for triggering schematic diagram of the utility model embodiment 1;
Fig. 6 is microprocessor and the peripheral interface circuit schematic diagram of the utility model embodiment 1;
Fig. 7 is the utility model embodiment 2 anti-electricity-theft device schematic diagrams;
Embodiment
As shown in Figure 2: present embodiment is a kind of anti-electricity-theft device, comprises feeder ear and electricity consumption end and with the transmission of electricity electric wire (or cable) of feeder ear and electricity consumption end; Be provided with the phase splitter that the AC wave waveform is separated into positive half cycle phase waveform and negative half period phase waveform at feeder ear, be provided with the positive half cycle phase waveform of AC wave waveform and negative half period phase waveform in conjunction with the device mutually that closes that generates complete AC wave at the electricity consumption end, the transmission of electricity electric wire is sent to the AC wave waveform of positive half cycle phase waveform and negative half period phase waveform respectively and closes device mutually from described phase splitter.
Be the single-phase alternating current output system in the present embodiment, the transmission of electricity electric wire comprises positive half cycle phase waveform transmission line, negative half period phase waveform transmission line and three lines of zero line transmission line, Duos a lead than the transmission means that does not have anti-electricity-theft device at present; Wherein, institute's electric current transmitted is half of former phase line on positive half cycle phase waveform transmission line and the negative half period phase waveform transmission line; Phase splitter comprises diode D1 and D2, and the anode of diode D1 connects power input, and the negative electrode of diode D1 connects positive half cycle phase waveform transmission line; The negative electrode of diode D2 connects power input, and the anode of diode D2 connects negative half period phase waveform transmission line;
Close the phase device and comprise unidirectional controllable silicon S CR1 and unidirectional controllable silicon S CR2; The anode of unidirectional controllable silicon S CR1 connects positive half cycle phase waveform transmission line, and the negative electrode of unidirectional controllable silicon S CR1 connects output, and the anode of unidirectional controllable silicon S CR2 connects output, and the negative electrode of unidirectional controllable silicon S CR2 connects negative half period phase waveform transmission line; The grid of unidirectional controllable silicon S CR1 and unidirectional controllable silicon S CR2 is connection control circuit respectively, and control circuit is control unidirectional controllable silicon S CR1 conducting when positive half cycle, when negative half period, and control unidirectional controllable silicon S CR2 conducting.Control circuit in the present embodiment is shown in Fig. 3,4,5, and control circuit comprises phase place zero cross detection circuit, microprocessor and light-coupled isolation circuits for triggering; Microprocessor and peripheral circuit as shown in Figure 6, each pin of microprocessor can oneself be defined as input and output, but communication port TXD, RXD fix.TXD, RXD in little processing are connected with communication port TX, the RX of outside, like this, control centre can authorize the anti-electricity-theft device of validated user by communication port, first and second light-coupled isolation circuits for triggering are exported trigger impulse in turn, make SCR1, SCR2 take turns conducting, validated user just can obtain complete alternating current; And this mandate is effective property.Otherwise, even if the disabled user has anti-electricity-theft device, because can not get authorizing, or ageing mistake, first and second light-coupled isolation circuits for triggering are not just exported trigger impulse, and SCR1, SCR2 are in closed condition, and the disabled user just can not obtain complete alternating current.
Zero cross detection circuit comprises positive half cycle phase waveform zero cross detection circuit and negative half period phase waveform zero cross detection circuit;
The light-coupled isolation circuits for triggering comprise the first light-coupled isolation circuits for triggering that trigger unidirectional controllable silicon S CR1 and the second light-coupled isolation circuits for triggering that trigger unidirectional controllable silicon S CR2;
The output of positive half cycle phase waveform zero cross detection circuit and negative half period phase waveform zero cross detection circuit connects described microprocessor input respectively, and the control end of the first light-coupled isolation circuits for triggering and the second light-coupled isolation circuits for triggering connects described microprocessor output respectively.
As shown in Figure 3, positive half cycle phase waveform zero cross detection circuit comprises optocoupler U4, current-limiting resistance R3, breakdown diode ZD1; The anode of the input light-emitting diode of optocoupler U4 connects positive half cycle phase waveform transmission line by current-limiting resistance R3, the negative pole of breakdown diode connects the anode of the input light-emitting diode of described optocoupler U4, and the positive pole of breakdown diode connects negative electrode and the zero line transmission line of the input light-emitting diode of optocoupler U4; The collector electrode of the output triode of optocoupler U4 connects described microprocessor, grounded emitter.
Negative half period phase waveform zero cross detection circuit as shown in Figure 4, this circuit comprises optocoupler U5, current-limiting resistance R4, breakdown diode ZD2, the negative electrode of the input light-emitting diode of optocoupler U5 connects negative half period phase waveform transmission line by described current-limiting resistance R4, the positive pole of breakdown diode connects the negative electrode of the input light-emitting diode of described optocoupler U5, and the negative pole of breakdown diode connects anode and the connecting to neutral line transmission line of the input light-emitting diode of described optocoupler U5; The collector electrode of the output triode of optocoupler U5 connects described microprocessor, grounded emitter.
The phase place zero passage detection is to detect signal to be pressed onto zero point from positive electricity for the first time, obtains a zero cross signal that is slightly in advance of actual zero point like this, and conducting SCR2 exports in order to obtain complete negative half period phase waveform electric wave in advance; Phase place zero passage detection for the second time in the described step 34 is to detect signal to be pressed onto zero point from negative electricity, obtains a zero cross signal that is slightly in advance of actual zero point like this, and conducting SCR1 in advance is in order to obtain complete positive half cycle phase waveform electric wave output; Just can obtain complete sine wave alternating current at the electricity consumption end like this.
As shown in Figure 5, the first light-coupled isolation circuits for triggering comprise optocoupler U1, current-limiting resistance R1; Optocoupler U1 input is light-emitting diode, and output is photosensitive two-terminal switch element; The anode of the light-emitting diode of optocoupler U1 connects power supply, and negative electrode connects microprocessor, is linked into the interface DRa1 of microprocessor and current-limiting resistance of leads ends adding of microprocessor at negative electrode, to alleviate the load of microprocessor.One end of the photosensitive two-terminal switch element of optocoupler U1 connects positive half cycle phase waveform transmission line, the grid of the described unidirectional controllable silicon S CR1 of another termination by described current-limiting resistance R1; The second light-coupled isolation circuits for triggering comprise optocoupler U2, current-limiting resistance R2; Optocoupler U2 input is light-emitting diode, and output is photosensitive two-terminal switch element; The anode of the light-emitting diode of optocoupler U2 connects power supply, negative electrode connects microprocessor, equally, the leads ends that connects microprocessor end DRa2 end and microprocessor at the optocoupler U2 of second light-coupled isolation circuits for triggering negative electrode also adds a current-limiting resistance, to alleviate the load of microprocessor.As shown in Figure 6, when present embodiment uses in as the three-phase four-wire system transmission line, can set the output signal end of DRb1, DRb2, DRc1, DRc2 on the microprocessor, without exception, all will import a current-limiting resistance at the signal output part of microprocessor device.
One end of the photosensitive two-terminal switch element of optocoupler U2 engages phase device output by described current-limiting resistance R2, through load connecting to neutral line transmission line; The grid of the described unidirectional controllable silicon S CR2 of another termination.When microprocessor as shown in Figure 3 output of optocoupler U4 of positive half cycle phase waveform zero cross detection circuit on receive has triggering signal, export a useful signal and give the negative electrode of the light-emitting diode of optocoupler U1, make lumination of light emitting diode, the conducting of optocoupler output, the grid of unidirectional controllable silicon S CR1 gets, make unidirectional controllable silicon S CR1 conducting, the electric wave of the positive half cycle phase waveform that reception is come from positive half cycle phase waveform transmission line, when positive half cycle phase waveform zero cross detection circuit is not exported triggering signal, the output of microprocessor is invalid, not conducting of optocoupler U1, unidirectional controllable silicon S CR1 ends.The second light-coupled isolation circuits for triggering comprise optocoupler U2, current-limiting resistance R2; Optocoupler U2 input is light-emitting diode, and output is photosensitive two-terminal switch element; The anode of the light-emitting diode of optocoupler U2 connects power supply, and negative electrode connects microprocessor, and an end of the photosensitive two-terminal switch element of optocoupler U2 connects negative half period phase waveform transmission line by described current-limiting resistance, the grid of the described unidirectional controllable silicon S CR2 of another termination.Be provided with the relay of being controlled by microprocessor at the photosensitive two-terminal switch element two ends of optocoupler U1 and the photosensitive two-terminal switch element two ends of optocoupler U2, its normally-closed contact is connected on the photosensitive two-terminal switch element two ends of described optocoupler U1 and the photosensitive two-terminal switch element two ends of optocoupler U2.
The course of work of present embodiment is as follows:
At first, destroy the sine waveform feature of every cross streams electricity at feeder ear; The waveform of the positive half cycle phase place of one cross streams electric wave and the waveform of negative half period phase place are separated.
Then, the positive and negative half cycle phase waveform electric wave after will separating respectively is sent to the electricity consumption end respectively.
At last, the electricity consumption end recover destroyed the sine waveform shape feature of every cross streams electricity.With receive respectively positive and negative half cycle phase waveform electric wave in conjunction with recovering this phase simple alternating current electric wave.
At initial powered on moment, closing phase device equipment does not have power supply and can not work, and the relay normally-closed contact makes SCR1, and the SCR2 conducting is closed phase device power supply module and got electric and set up operating state thereby make, and relay adhesive and normally-closed contact disconnects enters normal mode of operation.
Follow these steps to realize closing phase in the present embodiment:
A, the positive half cycle phase waveform electric wave of reception.
B, carry out the phase place zero passage detection first time; This moment, crossover point signal was to be pressed onto zero point from positive electricity.
C, produce triggering signal after detecting zero crossing, trigger and block the positive half cycle phase waveform electric wave output of output, begin to export negative half period phase waveform electric wave.
D, carry out the phase place zero passage detection second time; This moment, zero crossing was that signal is pressed onto zero point from negative electricity.
E, produce triggering signal after detecting zero crossing, trigger and close the output of output negative half period phase waveform electric wave, begin to export positive half cycle phase waveform electric wave;
Turn to steps A.
Below present embodiment is further analyzed:
When positive half cycle phase waveform descended near zero point, positive half cycle phase waveform zero cross detection circuit detected zero crossing Pa1, delivers to microprocessor MCU; As shown in Figure 3, the generation trigger impulse DRa2 that MCU is in good time through optical couple isolation drive circuit U2, applies the grid (G2) that suitable enough trigger currents arrive unidirectional controllable silicon S CR2 through R2, makes SCR2 begin conducting.It should be noted that, this moment, SCR1 was (the stating as follows) that is in conducting state, and the anode of the negative electrode of SCR1 and SCR2 is connected together, so the trigger current here is itself to be provided by the positive half cycle of sinusoidal ac, provide suitable enough trigger currents by current-limiting resistance R2 restriction, and optical couple isolation drive circuit only plays a switch ways effect as shown in Figure 5.After the zero passage, SCR1 ends, the SCR2 conducting.
The negative half period phase waveform rose when zero point, and negative half period phase waveform zero cross detection circuit detects zero crossing Pa2 as shown in Figure 4, delivers to MCU; The generation trigger impulse DRa1 that MCU is in good time through optical couple isolation drive circuit U1, applies the grid (G1) that suitable enough trigger currents arrive unidirectional controllable silicon S CR1 through R1, makes SCR1 begin conducting.It should be noted that this moment SCR2 is (the seeing above-mentioned) that is in conducting state, through D1, the D2 of SCR2 and phase splitter, provide suitable enough trigger currents by current-limiting resistance R1 restriction, make SCR1 begin conducting.And optical couple isolation drive circuit only plays a switch ways effect as shown in Figure 5.After the zero passage, SCR2 ends, the SCR1 conducting.
From the above, when positive and negative half cycle phase waveform, SCR1/SCR2 enters conducting state in turn, thereby makes two half cycles of positive and negative half cycle phase waveform along separate routes synthesize a complete sinusoidal ac, i.e. so-called " closing phase "; The output of ECDC phase device recovers to become the sinusoidal ac of standard, and validated user just can normally use like this.
In addition, adopt the mode that triggers, shifts to an earlier date conducting of intersecting in the present embodiment.Namely by positive half cycle phase waveform zero passage detection zero crossing Pa1, produce trigger impulse DRa2, make the SCR2 conducting, SCR1 ends; And by negative half period phase waveform zero passage detection zero crossing Pa2, produce trigger impulse DRa1, and making the SCR1 conducting, SCR2 ends.This intersection triggering mode has two big advantages: the one, can guarantee the complete conducting in two half cycles respectively of two controllable silicons, and there is not initial on-delay, that is the intermodulation distortion when not having zero crossing, thereby output can obtain complete sinusoidal ac; The 2nd, open-phase protection each other, even positive half cycle transmission line on the way breaks, and closing the phase device does not only have positive half cycle phase place output, does not have the output of negative half period phase place yet; Vice versa; Can obtain complete sinusoidal ac at output like this, the situation that does not have the output of half cycle phase place takes place.
In Fig. 5, also has an initial trigger circuit, by two groups of normally-closed contact short circuits of relay optocoupler U1 and optocoupler U2.At firm powered on moment, closing the phase device does not have electricity and can't work, this moment relay because of do not have the electricity normally-closed contact with R1/R2 directly and SCR1/G1(SCR2/G2) connect, SCR1/SCR2 will be in normal open state like this, power supply module is got, set up operating voltage, make and close the phase device and enter normal operating conditions; At this moment, the adhesive of MCU control relay, SCR1/SCR2 enters conducting state in turn, namely enters above-mentioned normal operating state.
Be illustrated in figure 6 as interface circuit and the peripheral circuit schematic diagram of the microprocessor in the present embodiment, in Fig. 6, except power supply and ground, microprocessor uses internal clocking; The FPDP of microprocessor has also defined communication interface and control port; In input port, it mainly is the zero crossing detection signal that detects; In output port, mainly be that output triggers control signal and relay control signal.Port has the function that the anti-electricity-theft device of validated user is authorized.Be connected with TX, RX among the outside communication port COM at TXD, the RXD of little processing, in addition, the GND of little processing is connected with the GND of the communication port of outside.Like this, control centre can authorize the anti-electricity-theft device of validated user by communication port, and first and second light-coupled isolation circuits for triggering are exported trigger impulse in turn, makes SCR1, SCR2 take turns conducting, and validated user just can obtain complete alternating current; And this mandate is effective property.Otherwise, even if the disabled user has anti-electricity-theft device, because can not get authorizing, or ageing mistake, first and second light-coupled isolation circuits for triggering are not just exported trigger impulse, and SCR1, SCR2 are in closed condition, and the disabled user just can not obtain complete alternating current;
Embodiment 2 as shown in Figure 7, present embodiment is a kind of anti-electricity-theft device of three-phase and four-line, operation principle is with to execute the single-phase electricity of example 1 basic identical.Its circuit has A, B, C three-phase, the phase splitter that therefore has 3 as an embodiment 1 with close device mutually, be every mutually between the electricity phase phasic difference be 120 to spend its transmission current three alternate loops each other.Therefore, when threephase load was in a basic balance, its neutral line current was zero substantially.
By a large amount of tests, test, the disabled user stolen electricity after, the operating position of part household electrical appliance is as follows:
1, inductive type load: can not use as air-conditioning, refrigerator, fan, washing machine, electromagnetic stove, electric frying pan, microwave oven, rotary type electric heater etc., and, hang over for a long time on the circuit, may also can cause damage.
2, lighting:
Incandescent lamp: obviously flicker, and dim, illumination only is equivalent to 1/4 of nominal value;
Electricity-saving lamp: part quality better available, but illumination descends;
Fluorescent lamp: the fluorescent lamp of Inductive ballast can not use;
The fluorescent lamp of the electric ballast of part quality better can be used, but illumination descends, may also can be with flicker.
3, TV: LCD TV is most of can be used;
Early stage GRT(picture tube) the TV major part can not be used;
Small part GRT(picture tube) TV is exempted from energy usefulness by force, but tangible colour cast can occur, and namely red one, purple one, blue or green one;
4, computer: the computer of LCD and notebook are most of can be used;
Early stage GRT(picture tube) the computer major part of display can not be used;
Small part GRT(picture tube) computer of display is exempted from energy usefulness by force, but tangible colour cast can occur, and namely red one, purple one, blue or green one;
5, sound equipment: exempt from energy usefulness by force, but tonequality is very poor, does not reach the purpose of appreciation.
6, only get the household electrical appliances of power-type, as insulating pot, most of energy such as electric blanket, water heater usefulness, but power descends.
Claims (6)
1. anti-electricity-theft device comprises feeder ear and electricity consumption end and the transmission of electricity electric wire that feeder ear is connected with the electricity consumption end;
It is characterized in that: be provided with the phase splitter that the AC wave waveform is separated into positive half cycle phase waveform and negative half period phase waveform at described feeder ear, be provided with the positive half cycle phase waveform of AC wave waveform and negative half period phase waveform in conjunction with the device mutually that closes that reverts to complete AC wave at described electricity consumption end, described transmission of electricity electric wire is sent to the AC wave waveform of positive half cycle phase waveform and negative half period phase waveform respectively and closes device mutually from described phase splitter.
2. anti-electricity-theft device according to claim 1 is characterized in that:
Described transmission of electricity electric wire comprises positive half cycle phase waveform transmission line, negative half period phase waveform transmission line and zero line transmission line, and wherein, institute's electric current transmitted is half of former phase line on positive half cycle phase waveform transmission line and the negative half period phase waveform transmission line; Described phase splitter comprises diode D1 and diode D2; The anode of described diode D1 connects power input, and the negative electrode of diode D1 connects positive half cycle phase waveform transmission line; The negative electrode of described diode D2 connects power input, and the anode of diode D2 connects negative half period phase waveform transmission line;
The described phase device that closes comprises unidirectional controllable silicon S CR1 and unidirectional controllable silicon S CR2; The anode of described unidirectional controllable silicon S CR1 connects positive half cycle phase waveform transmission line, and the negative electrode of unidirectional controllable silicon S CR1 connects output, and the anode of unidirectional controllable silicon S CR2 connects output, and the negative electrode of unidirectional controllable silicon S CR2 connects negative half period phase waveform transmission line; The grid of described unidirectional controllable silicon S CR1 and unidirectional controllable silicon S CR2 is connection control circuit respectively, and described control circuit is control unidirectional controllable silicon S CR1 conducting when positive half cycle, when negative half period, and control unidirectional controllable silicon S CR2 conducting.
3. anti-electricity-theft device according to claim 2, it is characterized in that: described control circuit comprises phase place zero cross detection circuit, microprocessor and light-coupled isolation circuits for triggering;
Described zero cross detection circuit comprises positive half cycle phase waveform zero cross detection circuit and negative half period phase waveform zero cross detection circuit;
Described light-coupled isolation circuits for triggering comprise the first light-coupled isolation circuits for triggering that trigger unidirectional controllable silicon S CR1 and the second light-coupled isolation circuits for triggering that trigger unidirectional controllable silicon S CR2;
The output of described positive half cycle phase waveform zero cross detection circuit and negative half period phase waveform zero cross detection circuit connects described microprocessor input respectively, and the control end of the described first light-coupled isolation circuits for triggering and the second light-coupled isolation circuits for triggering connects described microprocessor output respectively.
4. anti-electricity-theft device according to claim 3 is characterized in that:
Described positive half cycle phase waveform zero cross detection circuit comprises optocoupler U4, current-limiting resistance R3, breakdown diode ZD1; The anode of the input light-emitting diode of described optocoupler U4 connects positive half cycle phase waveform transmission line by described current-limiting resistance R3, the negative pole of described breakdown diode connects the anode of the input light-emitting diode of described optocoupler U4, and the positive pole of described breakdown diode connects negative electrode and the zero line transmission line of the input light-emitting diode of described optocoupler U4; The collector electrode of the output triode of described optocoupler U4 connects described microprocessor, grounded emitter;
Described negative half period phase waveform zero cross detection circuit comprises optocoupler U5, current-limiting resistance R4, breakdown diode ZD2, the negative electrode of the input light-emitting diode of described optocoupler U5 connects negative half period phase waveform transmission line by described current-limiting resistance R4, the positive pole of described breakdown diode ZD2 connects the negative electrode of the input light-emitting diode of described optocoupler U5, and the negative pole of described breakdown diode connects anode and the connecting to neutral line transmission line of the input light-emitting diode of described optocoupler U5; The collector electrode of the output triode of described optocoupler U5 connects described microprocessor, grounded emitter.
5. anti-electricity-theft device according to claim 3 is characterized in that:
The described first light-coupled isolation circuits for triggering comprise optocoupler U1, current-limiting resistance R1; Described optocoupler U1 input is light-emitting diode, and output is photosensitive two-terminal switch element; The anode of the light-emitting diode of described optocoupler U1 connects power supply, negative electrode connects microprocessor, one end of the photosensitive two-terminal switch element of described optocoupler U1 connects positive half cycle phase waveform transmission line, the grid of the described unidirectional controllable silicon S CR1 of another termination by described current-limiting resistance R1;
The described second light-coupled isolation circuits for triggering comprise optocoupler U2, current-limiting resistance R2; Described optocoupler U2 input is light-emitting diode, and output is photosensitive two-terminal switch element; The anode of the light-emitting diode of described optocoupler U2 connects power supply, and negative electrode connects microprocessor, and an end of the photosensitive two-terminal switch element of described optocoupler U2 engages phase device output by described current-limiting resistance R2, through load connecting to neutral line transmission line; The grid of the described unidirectional controllable silicon S CR2 of another termination.
6. according to arbitrary described anti-electricity-theft device in the claim 2 to 5, it is characterized in that: also comprise the communication port with control centre, described microprocessor links to each other with control centre by described communication port, control centre is authorized the anti-electricity-theft device of validated user by communication port, utilize microprocessor to make described first and second light-coupled isolation circuits for triggering export trigger impulse in turn, make SCR1, SCR2 take turns conducting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013200566922U CN203119623U (en) | 2013-02-01 | 2013-02-01 | Electricity larceny prevention device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013200566922U CN203119623U (en) | 2013-02-01 | 2013-02-01 | Electricity larceny prevention device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203119623U true CN203119623U (en) | 2013-08-07 |
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ID=48899939
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013200566922U Expired - Lifetime CN203119623U (en) | 2013-02-01 | 2013-02-01 | Electricity larceny prevention device |
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| Country | Link |
|---|---|
| CN (1) | CN203119623U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103151833A (en) * | 2013-02-01 | 2013-06-12 | 马新国 | Electricity larceny prevention method and device |
| CN106996586A (en) * | 2017-05-18 | 2017-08-01 | 浙江帅康电气股份有限公司 | Fresh air linkage controller and the range hood using the linkage controller |
-
2013
- 2013-02-01 CN CN2013200566922U patent/CN203119623U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103151833A (en) * | 2013-02-01 | 2013-06-12 | 马新国 | Electricity larceny prevention method and device |
| CN103151833B (en) * | 2013-02-01 | 2015-09-02 | 马新国 | A kind of electricity anti-theft method and anti-electricity-theft device |
| CN106996586A (en) * | 2017-05-18 | 2017-08-01 | 浙江帅康电气股份有限公司 | Fresh air linkage controller and the range hood using the linkage controller |
| CN106996586B (en) * | 2017-05-18 | 2023-07-28 | 浙江帅康电气股份有限公司 | Fresh air linkage controller and range hood using same |
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