CN2569149Y

CN2569149Y - Anti-fraudulent use of electricity monitor

Info

Publication number: CN2569149Y
Application number: CN 02271685
Authority: CN
Inventors: 邓志辉; 周日炫
Original assignee: Individual
Current assignee: Individual
Priority date: 2002-07-12
Filing date: 2002-07-12
Publication date: 2003-08-27
Anticipated expiration: 2012-07-12

Abstract

The utility model relates to an electricity theft preventing monitor which is composed of a host machine 1 and a plurality of branch machines 2, wherein the host machine 1 is arranged near a total electric meter 3 of a transformer, and the branch machines 2 are respectively arranged near branch electric meters 4 of large electricity users. The host machine 1 in a structure roughly consistent with the branch machines 2 comprises a current sampler 5, a current-to-voltage converter 6, a signal superimposer 7, a central processing unit 8 with an analog-to-digital conversion function, a display 9, a channel gating circuit 10, a receiving/transmitting coupling circuit 11, a carrier wave transmitting circuit 12, a frequency-stabilizing circuit 13, a demodulator circuit 14 and a power circuit 15. A current mutual inductor on the host machine 1 is directly connected with the low-voltage output end of the transformer; the current samplers 5 on the branch machines 2 share current mutual inductors for metering in the electric meters 4. The utility model can monitor the situations of electricity utilization and electric supply in real time, can record and analyze practical situations, can detect overload electricity utilization and electric theft on the low-voltage side of the transformer, and has the advantages of stable, reliable and visual operation and high digitization and intellectualized degree.

Description

Anti-electricity-theft monitor

1, technical field:

The utility model relates to anti-electricity-theft monitor.

2, background technology:

At present, at various electricity filching behaviors, for example: overload operation is sneaked current, walk around metering behavior such as sneak current before the ammeter, it is varied to occur anti-electricity-theft device on the market, their each have their own characteristics, have plenty of the structure of ammeter or transformer is improved, have plenty of by means such as electronics measure monitors and undertaken, power consumption at present large electricity consumer is more, if there is electricity filching behavior, the loss that may cause is bigger, carrier communication has appearred utilizing now, the anti-electricity-theft monitor that technology such as electronic monitoring produce, for example the patent No. is: 992507014, notification number is: CN2402048Y, patent name is: the utility model patent of low voltage electric network controller for preventing illegal use of electricity, its major defect has: 1) have executive circuit, when in case the quantity of user's electricity consumption is unbecoming with the metered amounts of main frame, cut off user's power supply, because the large electricity consumer generally is an enterprise, in case have a power failure ordinary production is caused big influence, and may exist multiple factor to make the metered amounts of the quantity of electricity consumption and main frame unbecoming in the actual production time, therefore, the situation of maloperation can appear in executive circuit; 2) it all adopts mimic channel to finish all functions, do not handle the ability of numeral, the function that does not have record data, concrete analysis data, for example, the quantity of electricity consumption and the disproportionate related data of metered amounts of main frame appear in record, comprise the important data such as difference of time, actual power consumption,, can't measure power-steeling quantity if there is electricity filching behavior; 3) intuitive is not enough, near large electricity consumer's ammeter, extension set is installed, the result of extension set metering can't show then and there, can't compare with the actual metered value of ammeter, when the result of possible extension set metering is wrong, send back the result of the mistake of main frame, cause detecting error, can not provide valuable data for maintenance and managerial personnel's on-site working; 4) transmission of the data of main frame and extension set is unidirectional, can not communicate by letter between the extension set, and when electrical management personnel on-site working, the data that must carry main frame, not too convenient, work efficiency is not high.

3, summary of the invention:

The purpose of this utility model provides anti-electricity-theft monitor, it is by near the main frame the total ammeter that is installed in transformer and be installed in intercommunication mutually between near electricity consumption big customer's the branch ammeter the extension set, monitor the situation of electricity consumption and power supply in real time, and record analysis actual conditions, working stability is reliably directly perceived, digitizing and intelligent feelings degree are higher, can realize remote monitoring, and work efficiency is higher.

The utility model is achieved by the following technical solution: it is made up of main frame and several extension sets, main frame is installed near total ammeter of transformer, extension set is installed in respectively near electricity consumption big customer's the branch ammeter, main frame and extension set structure are unanimous on the whole, comprise current sample, the current/voltage conversion, the signal stack, the central processing unit of band A/D translation function, display, the channel gating circuit, reception/emission coupled circuit, the carrier transmit circuit, frequency stabilization circuit, demodulator circuit and power circuit, the output terminal of current sample is connected the input end of current/voltage conversion, the output terminal of current/voltage conversion is connected the output terminal of signal stack, the output terminal of signal stack is connected with the input end of central processing unit, the output terminal of central processing unit connects the input end of display, the controlled end A of channel gating circuit is connected the output control terminal B of central processing unit, the channel gating circuit) IO interface is connected reception/emission coupled circuit, reception/emission coupled circuit is connected with line of electric force, the data input port of channel gating circuit connects the output terminal of carrier transmit circuit, the output terminal connection carrier transmit circuit of frequency stabilization circuit) input end, the data output end of central processing unit connects the input end of carrier transmit circuit, the channel gating circuit) data output and demodulator circuit) input end be connected, the output terminal of demodulator circuit is connected to the data input pin of central processing unit, current sample is made up of the current transformer of the enclosure that is positioned at main frame on the main frame, current transformer directly is connected the bottom of the binding post of transformer low voltage output terminal, and the current sample on the extension set is the current transformer of the metering usefulness of shared minute ammeter the inside.

Above-mentioned described main frame and extension set can also comprise storer, the output terminal connected storage of central processing unit.

The periphery of above-mentioned described central processing unit can also dispose peripherals such as keyboard.

The utility model compared with prior art has following advantage: it is by near the main frame the total ammeter that is installed in transformer and be installed in intercommunication mutually between near electricity consumption big customer's the branch ammeter the extension set, monitor the situation of electricity consumption and power supply in real time, and record analysis actual conditions, even the user adopts the overload electricity consumption to make the ammeter metering be forbidden to carry out stealing, also can detect, the current transformer of current sample directly is connected the bottom of the binding post of transformer low voltage output terminal in the main frame, prevent that electricity consumer from directly being sneaked current by the low-voltage output of transformer, working stability is reliably directly perceived, digitizing and intelligent feelings degree are higher, can realize remote monitoring, work efficiency is higher, and can provide data immediately for maintenance personal and managerial personnel's on-site working.

4, description of drawings:

Below in conjunction with accompanying drawing the utility model is done detailed explanation:

Fig. 1 is a structural representation of the present utility model;

Fig. 2 is the circuit block diagram of the utility model main frame or extension set;

Fig. 3 is the circuit diagram of Fig. 2 correspondence.

5, embodiment:

As Fig. 1, Fig. 2, shown in Figure 3, the utility model main frame 1 and several extension sets 2 are formed, main frame 1 is installed near total ammeter 3 of transformer, extension set 2 is installed in respectively near electricity consumption big customer's the branch ammeter 4, main frame 1 and extension set 2 structures are unanimous on the whole, comprise current sample 5, current/voltage conversion 6, signal stack 7, the central processing unit 8 of band A/D translation function, display 9, channel gating circuit 10, reception/emission coupled circuit 11, carrier transmit circuit 12, frequency stabilization circuit 13, demodulator circuit 14 and power circuit 15, the output terminal of current sample 5 is connected the input end of current/voltage conversion 6, the output terminal of current/voltage conversion 6 is connected the output terminal of signal stack 7, the output terminal of signal stack 7 is connected with the input end of central processing unit 8, the output terminal of central processing unit 8 connects the input end of display 9, the controlled end A of channel gating circuit 10 is connected the output control terminal B of central processing unit 8, the IO interface of channel gating circuit 10 is connected reception/emission coupled circuit 11, reception/emission coupled circuit 11 is connected with line of electric force, the data input port of channel gating circuit 10 connects the output terminal of carrier transmit circuit 12, the output terminal of frequency stabilization circuit 13 connects the input end of carrier transmit circuit 12, the data output end of central processing unit 8 connects the input end of carrier transmit circuit 12, the data output of channel gating circuit 10 is connected with the input end of demodulator circuit 14, the output terminal of demodulator circuit 14 is connected to the data input pin of central processing unit 8, current sample 5 is made up of the current transformer of the enclosure that is positioned at main frame 1 on the main frame 1, current transformer directly is connected the bottom of the binding post of transformer low voltage output terminal, and the current sample 5 on the extension set 2 is current transformers of the metering usefulness of shared minute ammeter 4 the insides.Main frame 1 and extension set 2 can also comprise storer 16, the output terminal connected storage 15 of central processing unit 8.The periphery of central processing unit 8 can also dispose peripherals such as keyboard.

As shown in Figure 3, principle of work of the present utility model is as follows: inductance L 001, L002, L003 forms current sample 5, the inductance L 001 of main frame 1, L002, L003 carries, and the inductance L 001 of extension set 2, L002, L003 adopts the telefault of the metering usefulness of dividing ammeter 4 inside, current sample 5 samplings are after current/voltage conversion 6 becomes d. c. voltage signal, these signals are accumulated in together by signal stack 7 again, be sent to the 13rd pin of the central processing unit 8 of band A/D translation function then, central processing unit 8 calculates, analyze and the recording storage relevant data, the communications status of main frame 1 and extension set 2 all is in accepting state under the normal condition, be central processing unit 8 the 17th pin be in low level state usually, the IO interface X of channel gating circuit 10, the data output X0 of Y pin and channel gating circuit 10, the Y0 pin is connected, reception/emission coupled circuit 11 receives the carrier signal that transmits on the line of electric force and delivers to demodulator circuit 14 by channel gating circuit 10, signal after the demodulation is sent to the 18th pin of central processing unit 8, handles after the A/D conversion, analyze and storage; In the time will sending data or instruction, the 17th pin of central processing unit 8 be in high level state, make the communications status of main frame 1 and extension set 2 all be in emission state, the data input port X1 of the IO interface X of channel gating circuit 10, Y pin and channel gating circuit 10, Y1 pin connect, and data that central processing unit 8 will send or instruction are delivered to by the 19th human hair combing waste through D/A conversion back and be transmitted on the line of electric force through channel gating circuit 10 after carrier transmit circuit 12 is modulated.

Claims

1, anti-electricity-theft monitor, it is characterized in that it is made up of main frame (1) and several extension sets (2), main frame (1) is installed near total ammeter (3) of transformer, extension set (2) is installed in respectively near electricity consumption big customer's the branch ammeter (4), main frame (1) and extension set (2) structure are unanimous on the whole, comprise current sample (5), current/voltage conversion (6), signal stack (7), the central processing unit (8) of band A/D translation function, display (9), channel gating circuit (10), reception/emission coupled circuit (11), carrier transmit circuit (12), frequency stabilization circuit (13), demodulator circuit (14) and power circuit (15), the output terminal of current sample (5) is connected the input end of current/voltage conversion (6), the output terminal of current/voltage conversion (6) is connected the output terminal of signal stack (7), the output terminal of signal stack (7) is connected with the input end of central processing unit (8), the output terminal of central processing unit (8) connects the input end of display (9), the controlled end A of channel gating circuit (10) is connected the output control terminal B of central processing unit (8), the IO interface of channel gating circuit (10) is connected reception/emission coupled circuit (11), reception/emission coupled circuit (11) is connected with line of electric force, the data input port of channel gating circuit (10) connects the output terminal of carrier transmit circuit (12), the output terminal of frequency stabilization circuit (13) connects the input end of carrier transmit circuit (12), the data output end of central processing unit (8) connects the input end of carrier transmit circuit (12), the data output of channel gating circuit (10) is connected with the input end of demodulator circuit (14), the output terminal of demodulator circuit (14) is connected to the data input pin of central processing unit (8), main frame (1) is gone up current sample (5) and is made up of the current transformer of the enclosure that is positioned at main frame (1), current transformer directly is connected the bottom of the binding post of transformer low voltage output terminal, and the current sample (5) on the extension set (2) is the current transformer of the metering usefulness of shared minute ammeter (4) the inside.

2, anti-electricity-theft monitor according to claim 1 is characterized in that main frame (1) and extension set (2) also comprise storer (16), the output terminal connected storage (15) of central processing unit (8).

3, anti-electricity-theft monitor according to claim 1 is characterized in that can also disposing peripherals such as keyboard in the periphery of central processing unit (8).