CN2879198Y - Single-phase carrier pre-charging anti-theft electricity meter box - Google Patents
Single-phase carrier pre-charging anti-theft electricity meter box Download PDFInfo
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- CN2879198Y CN2879198Y CN 200620023501 CN200620023501U CN2879198Y CN 2879198 Y CN2879198 Y CN 2879198Y CN 200620023501 CN200620023501 CN 200620023501 CN 200620023501 U CN200620023501 U CN 200620023501U CN 2879198 Y CN2879198 Y CN 2879198Y
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Abstract
This utility model associates a single-phase carrier wave and electricity theft-proof prepaid ammeter cabinet, which is used for guarding against electricity theft and alarm. The technical scheme of the cabinet is: the cabinet consists of a cabinet body and an electric bill prepaid ammeter system. After being improved, the cabinet is additionally positioned with a carrier wave communication circuit, a main and loop circuit control circuit, a monitoring circuit. The monitoring circuit is installed with a remote-control signal transmission circuit. The carrier wave communication circuit comprises a coupling transformer, a receiving and transmitting circuit of the carrier wave signal, a modem U1 and a CPU, whereas the control circuit of the main and loop circuit consists of diode D1, D2, relay J1 and audion T1 to T6. The monitoring circuit consists of a coding integrated block, time-base circuit, relay J2, audion, control switch K1, photoelectric cell 3DU, and Potentiometer W. The remote-control signal transmission circuit comprises a coding integrated block and a LBD. This utility model can spot and then stop electricity theft and alarm, thereby minimizing the economic loss and eliminating the hidden danger.
Description
Technical field
The utility model relates to a kind of pre-paying kilowatt-hour meter case, has anti-electricity-theft warning function, belongs to field of measuring techniques.
Background technology
Electricity is the indispensable energy in industrial and agricultural production and the people's daily life, and in order to make rational planning for power consumption and collect the electricity charge, power department has been installed in supply line by watt-hour meter so that the power consumption of metering user.Existing watt-hour meter generally all is to be installed in the ammeter box, does not have anti-theft device.Under the driving of economic interests, often there is the people to open ammeter box privately circuit is reequiped, to reach the purpose of stealing.After circuit is reequiped, can not find in time that generally this has not only caused economic loss to country, but also can bring electric leakage, accident potential such as catch fire, the people's safety of life and property in serious threat.
Summary of the invention
The utility model is used to overcome the deficiencies in the prior art and a kind of simple and practical anti-electricity-theft ammeter box of single-phase carrier wave pre-payment is provided.
Problem of the present utility model realizes with following technical proposals:
The anti-electricity-theft ammeter box of a kind of single-phase carrier wave pre-payment, form by casing and the pre payment watthour meter that is installed in the casing, set up carrier communication circuit after the improvement, major loop control circuit and supervisory circuit, wherein, the modulation signal sending and receiving end of carrier communication circuit is connected on the line of electric force, connect the center of checking meter by line of electric force, its control, the alerting signal I/O meets the input end A of major loop control circuit, B, the relay contact of major loop control circuit is series in the main loop circuit, in the pilot switch K1 installation and cabinet door of supervisory circuit, its signal output part meets the signal input part B of major loop control circuit, and supervisory circuit is furnished with the remote signal radiating circuit.
The anti-electricity-theft ammeter box of above-mentioned single-phase carrier wave pre-payment, described carrier communication circuit is by coupling transformer T, the carrier signal receiving circuit, the carrier signal transtation mission circuit, modulator-demodular unit U1 and singlechip CPU are formed, described carrier signal receiving circuit is by resistance R 4～R7, diode D4, D5 and triode T8 form, wherein, resistance R 5～R7, triode T8 is connected into common-emitter amplifier, resistance R 5, R6 is respectively on the base stage, below-center offset resistance, resistance R 7 is a collector load resistor, diode D4, the D5 reverse parallel connection is connected between the base stage and emitter of triode T8 after connecting, the output signal of triode T8 collector meets the input end SIGin of modulator-demodular unit U1, the primary coil of described coupling transformer T connects line of electric force through a capacitor C 1, and secondary coil is connected between the base stage and emitter of triode T8 through resistance R 4; Described carrier signal transtation mission circuit is by resistance R 8, R9, capacitor C 2～C4, triode T9～T12 forms, wherein, triode T11, T12 is connected into the OCL amplifier, the output terminal of OCL amplifier connects the secondary coil of coupling transformer T through capacitor C 2, the OCL amplifier input terminal meets triode T9, the collector of T10, the emitter of triode T9 connects positive source, base stage meets the output terminal PSKout of modulator-demodular unit U1 through the series circuit of resistance R 8 and capacitor C 3, the grounded emitter of triode T10, base stage meets the output terminal PSKout of modulator-demodular unit U1 through the series circuit of resistance R 9 and capacitor C 4, described modulator-demodular unit U1 is made of the half-duplex asynchronous modem controller, its duplex transmitting-receiving control end R/T connects the P15 end of single-chip microcomputer, receive, send the P16 end that data terminal TXD/RXD connects single-chip microcomputer, its I2C universal serial bus data input, output terminal SDA meets the P14 end of single-chip microcomputer, the output terminal TXD of described single-chip microcomputer, RXD meets the input end A of major loop control circuit respectively, B.
The anti-electricity-theft ammeter box of above-mentioned single-phase carrier wave pre-payment, described major loop control circuit is by resistance R 1, R2, diode D1, D2, relay J 1 and triode T1～T6 forms, wherein, the base stage of triode T1 meets the signal input part A of major loop control circuit, grounded emitter, the base stage of collector connecting transistor T2, the emitter of triode T2 connects positive source through resistance R 1, one end of the pull-in winding of collector connecting relay J1, the collector of another termination triode T3 of the pull-in winding of relay J 1, the normally opened contact J1-1 of relay J 1 is series in the main loop circuit, the grounded emitter of triode T3, base stage meets diode D1, the negative pole of D2, diode D1, the positive pole of D2, meet the input end A of major loop control circuit respectively, B, the base stage of triode T4 meets the signal input part B of major loop control circuit, grounded emitter, the base stage of collector connecting transistor T5, triode T5 emitter connects the emitter of triode T2, the base stage of collector connecting transistor T6, the collector of the collector connecting transistor T2 of triode T6, emitter connects power supply negative terminal through resistance R 2.
The anti-electricity-theft ammeter box of above-mentioned single-phase carrier wave pre-payment, described supervisory circuit is by decoding integration block IC1, time base circuit IC2, relay J 2, triode T7, gauge tap K1, photoelectric tube 3DU and potentiometer W constitute, wherein, the grounded emitter of photoelectric tube 3DU, collector connects positive source through potentiometer W, the output signal of photoelectric tube 3DU collector connects 9 pin of decoding integration block IC1, the grounded emitter of triode T7, base stage connects 11 pin of decoding integration block IC1, collector connects positive source through the coil of relay J 2,4 of the normally opened contact one termination time base circuit IC2 of relay J 2,8 pin, one termination power positive pole, 3 pin of gauge tap K1 one termination time base circuit IC2, the input end B of a termination major loop control circuit.
The anti-electricity-theft ammeter box of above-mentioned single-phase carrier wave pre-payment, described remote signal radiating circuit is made up of coding integrated package IC3, resistance R 3 and light emitting diode D3, wherein, light emitting diode D3 minus earth, anodal 15 pin that meet coding integrated package IC3 through resistance R 3.
The utility model utilizes the supervisory circuit collection signal of illegally unpacking, and signal is delivered to the signal input part B of major loop control circuit, and the major loop control circuit drives relay J 1 action, and current supply circuit is disconnected, and has stoped proceeding of electricity filching behavior.Meanwhile, carrier communication circuit obtains illegally unpacking signal from the signal input part B of major loop control circuit, and sends alerting signal by line of electric force to the center of checking meter.After the staff restores ammeter box, send by the center of checking meter and to send electric signal, restore electricity.When the staff need open ammeter box, can utilize telepilot to remove the monitoring function of supervisory circuit earlier, guarantee that supply line normally moves.The utility model can cut off main loop circuit automatically when having the people illegally to open ammeter box, report to the police automatically, and can only restore electricity by the center of checking meter, so just can in time find and prevent electricity filching behavior,, and eliminate accident potential for power department reduces economic loss.
Description of drawings
The utility model is described in further detail below in conjunction with drawings and Examples.
Fig. 1 is an electric theory diagram of the present utility model;
Fig. 2 is the electrical schematic diagram of major loop control circuit;
Fig. 3 is the electrical schematic diagram of supervisory circuit;
Fig. 4 is the electrical schematic diagram of remote signal radiating circuit;
Fig. 5 is the electric theory diagram of carrier communication circuit;
Fig. 6 is the electrical schematic diagram of carrier communication circuit.
The model of each integrated package is among the figure: CPU adopts 89C2051, half-duplex asynchronous modem controller U1 adopts the PL2101B that aims at the power line communication network design, IC1 adopts the MC145028 decoding integration block, IC2 adopts 5G1555 time base circuit integrated package, IC3 adopts MC145026 coding integrated package, relay J 1 adopts magnetic saturation relay J MX-XX, and WB is a watt-hour meter.
Among Fig. 3,16 pin of MC145028 decoding integration block connect positive source, and 8 pin such as 1,5,12,15 are the coding pin, and 1 among the figure, 5 pin connect the noble potential line, 12 pin ground connection, and 15 pin are vacant.In actual applications, select different pins and three kinds of states of MC145028 to make up, but composing quantity is organized into groups password greatly, each ammeter box has independent password.16 pin of MC145026 coding integrated package connect positive source, 1～7,9,10 pin are the coding pin, the user can cooperate the password of supervisory circuit to remote signal radiating circuit group code, a telepilot can have the corresponding different respectively ammeter box of multiple cipher, in the present embodiment, 1,10 pin of ic chip 3 connect the noble potential line, 9 pin ground connection, 7 pin are vacant, thereby constituted a group coding.
The course of work of the present utility model is as follows:
The course of work of carrier communication circuit: under normal circumstances, the center of checking meter is sent and is opened modulation signal, signal is delivered to carrier communication circuit by line of electric force, this signal enters coupling transformer T through high-pass filtering capacitor C1, the signal of coupling transformer T output enters the common-emitter amplifier of being made up of triode T8 through resistance R 4, signal after the amplification enters modulator-demodular unit U1 and carries out demodulation, signal after the demodulation enters CPU, the output terminal TXD of CPU will open on the signal input part A that signal is added in the major loop control circuit, and major loop is connected.When the people illegally opens ammeter box, supervisory circuit is delivered to alerting signal the signal input part B of major loop control circuit, this signal enters single-chip microcomputer by the input end RXD of CPU, is sent to modulator-demodular unit U1 then and modulates, and modulation signal is by the output terminal PSKout output of modulator-demodular unit U1.This signal is sent to the base stage of triode T9, T10 through capacitor C 3, C4, resistance R 8, R9, being amplified into the OCL amplifier of being made up of triode T11, T12 by triode T9, T10 amplifies, signal after the amplification is delivered to coupling transformer T through capacitor C 2, delivers to the center of checking meter through high-pass filtering capacitor C1, line of electric force then.The effect of diode D1, D2 is to the input signal amplitude limit.
The course of work of major loop control circuit: carrier communication circuit output open signal, signal input part A by main telegram in reply control circuit enters, receive the base stage of triode T1, and connect the base stage of triode T3 by diode D1, the collector potential of triode T1 descends, make triode T2 conducting, + 12V voltage is added on the pull-in winding of relay J 1 through triode T2, meanwhile, also conducting of triode T3, then the pull-in winding of relay J 1 gets electronic work, and the normally opened contact closure of relay J 1 is for user power utilization.Because what relay J 1 was selected for use is the magnetic saturation relay, after opening blackout, relay J 1 still is kept closed.When cut-off signal enters the signal input part B of major loop control circuit, triode T3, T4 conducting, collector potential step-down after the T4 conducting, make triode T5 conducting again, collector potential raises and makes triode T6 conducting ,-12V voltage be added to through triode T6 on the pull-in winding of relay J 1 after the T5 conducting, and relay J 1 discharges, normally opened contact disconnects, and stops power supply.
The course of work of supervisory circuit: when the major loop operate as normal, the pilot switch K1 that is installed on the ammeter chamber door is in normally open, and ic chip 2 does not have signal output.When the people illegally opened the ammeter chamber door, pilot switch K1 closure, ic chip 2 output signals in the supervisory circuit discharged relay J 1 to the signal input part B of major loop control circuit, and normally opened contact disconnects, and stops power supply.When the central task personnel that check meter need open ammeter box, press the shutdown password of corresponding this ammeter box of remote-control signal transmitter earlier, send into ic chip 1 after the photoelectric tube 3DU received signal in the supervisory circuit, the contact J2-1 of relay J 2 disconnects, make ic chip 2 outages, at this moment open the ammeter chamber door again, the output of ic chip 2 no signals, major loop still can operate as normal.The staff shuts ammeter box behind the door, press the startup password of corresponding this ammeter box of remote-control signal transmitter, photoelectric tube 3DU sends starting-up signal into ic chip 1, the contact J2-1 closure of relay J 2, it is electric that ic chip 2 is got, and supervisory circuit is in running order again.
Claims (5)
1, the anti-electricity-theft ammeter box of a kind of single-phase carrier wave pre-payment, form by casing and the pre payment watthour meter that is installed in the casing, it is characterized in that, set up carrier communication circuit, major loop control circuit and supervisory circuit, wherein, the modulation signal sending and receiving end of carrier communication circuit is connected on the line of electric force, connect the center of checking meter by line of electric force, its control, the alerting signal I/O meets the input end A of major loop control circuit, B, the relay contact of major loop control circuit is series in the main loop circuit, in the pilot switch K1 installation and cabinet door of supervisory circuit, its signal output part meets the signal input part B of major loop control circuit, and supervisory circuit is furnished with the remote signal radiating circuit.
2, according to the anti-electricity-theft ammeter box of the described single-phase carrier wave pre-payment of claim 1, it is characterized in that, described carrier communication circuit is by coupling transformer T, the carrier signal receiving circuit, the carrier signal transtation mission circuit, modulator-demodular unit U1 and singlechip CPU are formed, described carrier signal receiving circuit is by resistance R 4～R7, diode D4, D5 and this utmost point pipe T8 form, wherein, resistance R 5～R7, triode T8 is connected into common-emitter amplifier, resistance R 5, R6 is respectively on the base stage, below-center offset resistance, resistance R 7 is a collector load resistor, diode D4, the D5 reverse parallel connection is connected between the base stage and emitter of triode T8 after connecting, the output signal of triode T8 collector meets the input end SIGin of modulator-demodular unit U1, the primary coil of described coupling transformer T connects line of electric force through a capacitor C 1, and secondary coil is connected between the base stage and emitter of triode T8 through resistance R 4; Described carrier signal transtation mission circuit is by resistance R 8, R9, capacitor C 2～C4, triode T9～T12 forms, wherein, triode T11, T12 is connected into the OCL amplifier, the output terminal of OCL amplifier connects the secondary coil of coupling transformer T through capacitor C 2, the OCL amplifier input terminal meets triode T9, the collector of T10, the emitter of triode T9 connects positive source, base stage meets the output terminal PSKout of modulator-demodular unit U1 through the series circuit of resistance R 8 and capacitor C 3, the grounded emitter of triode T10, base stage meets the output terminal PSKout of modulator-demodular unit U1 through the series circuit of resistance R 9 and capacitor C 4, described modulator-demodular unit U1 is made of the half-duplex asynchronous modem controller, its duplex transmitting-receiving control end R/T connects the P15 end of single-chip microcomputer, receive, send the P16 end that data terminal TXD/RXD connects single-chip microcomputer, its I2C universal serial bus data input, output terminal SDA meets the P14 end of single-chip microcomputer, the output terminal TXD of described single-chip microcomputer, RXD meets the input end A of major loop control circuit respectively, B.
3, according to the anti-electricity-theft ammeter box of the described single-phase carrier wave pre-payment of claim 1, it is characterized in that, described major loop control circuit is by resistance R 1, R2, diode D1, D2, relay J 1 and triode T1～T6 forms, wherein, the base stage of triode T1 meets the signal input part A of major loop control circuit, grounded emitter, the base stage of collector connecting transistor T2, the emitter of triode T2 connects positive source through resistance R 1, one end of the pull-in winding of collector connecting relay J1, the collector of another termination triode T3 of the pull-in winding of relay J 1, the normally opened contact J1-1 of relay J 1 is series in the main loop circuit, the grounded emitter of triode T3, base stage meets diode D1, the negative pole of D2, diode D1, the positive pole of D2, meet the input end A of major loop control circuit respectively, B, the base stage of triode T4 meets the signal input part B of major loop control circuit, grounded emitter, the base stage of collector connecting transistor T5, triode T5 emitter connects the emitter of triode T2, the base stage of collector connecting transistor T6, the collector of the collector connecting transistor T2 of triode T6, emitter connects power supply negative terminal through resistance R 2.
4, according to the anti-electricity-theft ammeter box of the described single-phase carrier wave pre-payment of claim 1, it is characterized in that, described supervisory circuit is by decoding integration block IC1, time base circuit IC2, relay J 2, triode T7, gauge tap K1, photoelectric tube 3DU and potentiometer W constitute, wherein, the grounded emitter of photoelectric tube 3DU, collector connects positive source through potentiometer W, the output signal of photoelectric tube 3DU collector connects 9 pin of decoding integration block IC1, the grounded emitter of triode T7, base stage connects 11 pin of decoding integration block IC1, collector connects positive source through the coil of relay J 2,4 of the normally opened contact one termination time base circuit IC2 of relay J 2,8 pin, one termination power positive pole, 3 pin of gauge tap K1 one termination time base circuit IC2, the input end B of a termination major loop control circuit.
5, according to the anti-electricity-theft ammeter box of the described single-phase carrier wave pre-payment of claim 1, it is characterized in that, described remote signal radiating circuit is made up of coding integrated package IC3, resistance R 3 and light emitting diode D3, wherein, light emitting diode D3 minus earth, anodal 15 pin that meet coding integrated package IC3 through resistance R 3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620023501 CN2879198Y (en) | 2006-02-09 | 2006-02-09 | Single-phase carrier pre-charging anti-theft electricity meter box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620023501 CN2879198Y (en) | 2006-02-09 | 2006-02-09 | Single-phase carrier pre-charging anti-theft electricity meter box |
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| Publication Number | Publication Date |
|---|---|
| CN2879198Y true CN2879198Y (en) | 2007-03-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620023501 Expired - Fee Related CN2879198Y (en) | 2006-02-09 | 2006-02-09 | Single-phase carrier pre-charging anti-theft electricity meter box |
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| CN (1) | CN2879198Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102648418A (en) * | 2009-05-11 | 2012-08-22 | 兰吉尔私人有限公司 | Meter and communications apparatus |
-
2006
- 2006-02-09 CN CN 200620023501 patent/CN2879198Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102648418A (en) * | 2009-05-11 | 2012-08-22 | 兰吉尔私人有限公司 | Meter and communications apparatus |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070314 |