CN207424062U - A kind of electric meter box capable of realizing electricity theft prevention alarm - Google Patents
A kind of electric meter box capable of realizing electricity theft prevention alarm Download PDFInfo
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- CN207424062U CN207424062U CN201721679623.1U CN201721679623U CN207424062U CN 207424062 U CN207424062 U CN 207424062U CN 201721679623 U CN201721679623 U CN 201721679623U CN 207424062 U CN207424062 U CN 207424062U
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Abstract
The utility model discloses a kind of electric meter box capable of realizing electricity theft prevention alarms, the capacitance C7 right ends are connected with bridge rectifier, resistance R2 upper ends and resistance R2 ' upper ends are all connected with power pins VDD, resistance R2 lower ends and resistance R3 upper ends are all connected with resistance R4 left ends, the negative input end of resistance R4 right ends and adjustable resistance R5 left ends all with the four-operational amplifier LM324 in left side is connected, coil L lower ends, resistance R3 lower ends, resistance R3 ' and capacitance C1 lower ends are all connected with bidirectional thyristor upper end, resistance R9 lower ends are connected with triode BG1 base stages, the collector of triode BG1 is connected respectively with bidirectional thyristor and resistance R10 lower ends, piezoelectric ceramics one end is connected with the pin 10 of integrated alarm circuit SGZ07 and the piezoelectric ceramics other end is grounded.The utility model is simple in structure, and circuit is simple, and volume is also small and can arbitrarily adjust threshold values, has a wide range of application, at low cost.
Description
Technical field
The utility model belongs to a kind of alarm technical field, and in particular to a kind of electric meter box capable of realizing electricity theft prevention alarm.
Background technology
Electric energy as one of important energy, be commonly applied to social production every field and social life it is each
Aspect, and be the indispensable energy in people's life.In the supply respect of electric energy, power department, which takes, implements a family expenses
The measure of the one piece of ammeter in family simultaneously replaces low capacity electricity by the transformation to distribution line and service conductor and with large capacity electric energy meter
The measures such as table make the conditions such as circuit, electric energy meter no longer become the restraining factors of limitation residential electricity consumption, had both enhanced the reliable of power supply
Property, and the daily power demand of resident is met, at the same time also substantially increase the electric energy sales volume of power supply enterprise；It is but similary
Also the difficulty in terms of much electricity metering and repair is brought to power supply enterprise.Since electric energy meter enormous amount and distribution are not concentrated,
Phenomena such as " power stealing ", " electric leakage ", is seen everywhere, these violation of law have seriously affected the normal electricity consumption of resident, while to power supply
Door causes serious economic loss, and stealing problem becomes more and more prominent.
Utility model content
Technical problem to be solved in the utility model is to provide a kind of anti-electricity-theft electricity in view of the above shortcomings of the prior art
Electricity box alarm, simple in structure, circuit is simple, and volume is also small and can arbitrarily adjust threshold values, has a wide range of application, at low cost.
To realize above-mentioned technical purpose, the technical solution that the utility model is taken is：
A kind of electric meter box capable of realizing electricity theft prevention alarm, wherein：Including bridge rectifier, zener diode, bidirectional thyristor, pressure
Electroceramics, subscriber's drop end, resistance R1, resistance R2, resistance R2 ', resistance R3, resistance R3 ', resistance R4, adjustable resistance R5, electricity
Hinder R6, resistance R7, resistance R8, resistance R9, resistance R10, resistance R11, resistance R12, resistance R13, capacitance C1, capacitance C2, capacitance
C3, capacitance C4, capacitance C5, capacitance C6, capacitance C7, coil L, four-operational amplifier LM324, diode D1, triode BG1 and
Integrated alarm circuit SGZ07, the capacitance C7 right ends are connected with bridge rectifier, the capacitance C6 upper ends and resistance
R13 left ends are all connected with bridge rectifier, the resistance R13 right ends and zener diode upper end all with power pins VDD
Connection, the capacitance C7 left ends, coil L upper ends and resistance R1 left ends are all connected with+220V pins, on the resistance R2
End and resistance R2 ' upper ends are all connected with power pins VDD, the resistance R2 lower ends and resistance R3 upper ends all with resistance R4 left ends
Connection, the resistance R4 right ends and adjustable resistance R5 left ends all connect with the negative input end of the four-operational amplifier LM324 in left side
It connects, the resistance R2 ' lower ends are connected with resistance R3 ' upper ends, the coil L lower ends, resistance R3 lower ends, resistance R3 ' and electricity
Hold C1 lower ends to be all connected with bidirectional thyristor upper end, four computings of the resistance R1 right ends and capacitance C1 upper ends all with left side are put
The positive input terminal connection of big device LM324, four computings of the adjustable resistance R5 right ends and diode D1 left ends all with left side are put
The output terminal connection of big device LM324, four fortune of the diode D1 right ends, capacitance C2 upper ends and resistance R6 upper ends all with right side
The positive input terminal connection of amplifier LM324 is calculated, the resistance R7 upper ends are connected with power pins VDD, under the resistance R7
End and negative input end of the resistance R8 upper ends all with the four-operational amplifier LM324 on right side are connected, the resistance R9 upper ends and electricity
It hinders output terminal of the R11 left ends all with the four-operational amplifier LM324 on right side to be connected, the resistance R9 lower ends and triode BG1
Base stage connects, and the emitter of the triode BG1 is connected respectively with subscriber's drop end and bidirectional thyristor, the triode
The collector of BG1 is connected respectively with bidirectional thyristor and resistance R10 lower ends, and the resistance R10 upper ends connect with capacitance C3 right ends
It connects, the capacitance C3 left ends are connected with coil L lower ends, and described piezoelectric ceramics one end is drawn with integrated alarm circuit SGZ07's
Foot 10 connects and the piezoelectric ceramics other end is grounded.
To optimize above-mentioned technical proposal, the concrete measure taken further includes：
Above-mentioned coil L is wound on outside electric wire.
Above-mentioned capacitance C5 both ends are connected on the pin 5 of integrated alarm circuit SGZ07 and pin 6 respectively.
Above-mentioned capacitance C4 both ends are connected on the pin 3 of integrated alarm circuit SGZ07 and pin 4 respectively.
The utility model by signal detection, amplification, detection, compare the circuits such as control, IGBT group, alarm and form.With
The coil L being wound on outside electric wire, to obtain the exchange 50Hz signals of reflection power consumption size.Because its induced potential signal is small, use
IC1 amplifies the signal after its rectification.R1, C1 form low-pass filter, prevent in power grid that higher hamonic wave enters circuit and cause malfunction
Make.R2, R3, R2 ', R3 ' respectively provide a midpoint potential for the same of in-phase amplifier IC1, end of oppisite phase, it is made to be transported in single supply
Under, exchange magnifying state, amplification factor 1+R5/R4 are operated in.Therefore, amplification factor can be changed by only becoming R5, this is right
Determine that control threshold values is particularly useful.For AC signal through IC1 amplifications by D1 detections, C2, R6 filter to obtain one steadily
DC voltage, be sent to IC2 and be compared.During normal range (NR) electricity consumption, R5 is adjusted, DC potential is less than 2V after making detection.Therefore,
Low potential is exported after IC2, makes BG, 1 cut-off.Meanwhile A points become low potential, and SGZ07 alarms is made not work.At this point, by
The trigger circuit normal work that C3, R10 are formed, makes 50Hz alternating currents by bidirectional thyristor to customer power supply.If user power utilization
Amount once more than regulation power, then it is rectified after DC potential be more than 2V, IC2 is overturn rapidly, exports high potential.On the one hand, A
Point is high level, and warning circuit work drives piezoelectric ceramic piece ring；On the other hand, BG1 is turned on, short circuit bidirectional thyristor
Control pole and cathode, turn it off.In this way, the function of thief-proof electric alarm is just reached.
The utility model has the advantage of the followings：Simple in structure, circuit is simple, and volume is also small and can arbitrarily adjust valve
Value, has a wide range of application, at low cost.
Description of the drawings
Fig. 1 is the structure diagram of the utility model.
Reference numeral therein is：Bridge rectifier 1, zener diode 2, bidirectional thyristor 3, piezoelectric ceramics 4, user
End of incoming cables 5, resistance R1, resistance R2, resistance R2 ', resistance R3, resistance R3 ', resistance R4, adjustable resistance R5, resistance R6, resistance
R7, resistance R8, resistance R9, resistance R10, resistance R11, resistance R12, resistance R13, capacitance C1, capacitance C2, capacitance C3, capacitance C4,
Capacitance C5, capacitance C6, capacitance C7, coil L, four-operational amplifier LM324, diode D1, triode BG1, integrated alarm circuit
SGZ07。
Specific embodiment
Specific embodiment of the present utility model is further illustrated below in conjunction with the accompanying drawings：
A kind of electric meter box capable of realizing electricity theft prevention alarm, wherein：Including bridge rectifier 1, zener diode 2, bidirectional thyristor
3rd, piezoelectric ceramics 4, subscriber's drop end 5, resistance R1, resistance R2, resistance R2 ', resistance R3, resistance R3 ', resistance R4, adjustable resistance
R5, resistance R6, resistance R7, resistance R8, resistance R9, resistance R10, resistance R11, resistance R12, resistance R13, capacitance C1, capacitance C2,
Capacitance C3, capacitance C4, capacitance C5, capacitance C6, capacitance C7, coil L, four-operational amplifier LM324, diode D1, triode BG1
With integrated alarm circuit SGZ07, the capacitance C7 right ends are connected with bridge rectifier 1, the capacitance C6 upper ends and electricity
Resistance R13 left ends are all connected with bridge rectifier 1, the resistance R13 right ends and 2 upper end of zener diode all with power pins
VDD connections, the capacitance C7 left ends, coil L upper ends and resistance R1 left ends are all connected with+220V pins, the resistance R2
Upper end and resistance R2 ' upper ends are all connected with power pins VDD, and the resistance R2 lower ends and resistance R3 upper ends are all left with resistance R4
End connection, the negative input end of the resistance R4 right ends and adjustable resistance R5 left ends all with the four-operational amplifier LM324 in left side
Connection, the resistance R2 ' lower ends are connected with resistance R3 ' upper ends, the coil L lower ends, resistance R3 lower ends, resistance R3 ' and
Capacitance C1 lower ends are all connected with 3 upper end of bidirectional thyristor, four fortune of the resistance R1 right ends and capacitance C1 upper ends all with left side
Calculate the positive input terminal connection of amplifier LM324, four fortune of the adjustable resistance R5 right ends and diode D1 left ends all with left side
Calculate the output terminal connection of amplifier LM324, the diode D1 right ends, capacitance C2 upper ends and resistance R6 upper ends all with right side
Four-operational amplifier LM324 positive input terminal connection, the resistance R7 upper ends are connected with power pins VDD, the electricity
It hinders the negative input end of R7 lower ends and resistance R8 upper ends all with the four-operational amplifier LM324 on right side to be connected, on the resistance R9
End and output terminal of the resistance R11 left ends all with the four-operational amplifier LM324 on right side are connected, the resistance R9 lower ends and three poles
Pipe BG1 base stages connect, and the emitter of the triode BG1 is connected respectively with subscriber's drop end 5 and bidirectional thyristor 3, described
The collector of triode BG1 be connected respectively with bidirectional thyristor 3 and resistance R10 lower ends, the resistance R10 upper ends and capacitance
C3 right ends connect, and the capacitance C3 left ends are connected with coil L lower ends, described 4 one end of piezoelectric ceramics and integrated alarm circuit
The pin 10 of SGZ07 connects and 4 other end of piezoelectric ceramics is grounded.
In embodiment, coil L is wound on outside electric wire.
In embodiment, capacitance C5 both ends are connected on the pin 5 of integrated alarm circuit SGZ07 and pin 6 respectively.
In embodiment, capacitance C4 both ends are connected on the pin 3 of integrated alarm circuit SGZ07 and pin 4 respectively.
It the above is only the preferred embodiment of the utility model, the scope of protection of the utility model is not limited merely to above-mentioned
Embodiment, all technical solutions belonged under the utility model thinking belong to the scope of protection of the utility model.It should be pointed out that pair
For those skilled in the art, several improvements and modifications under the premise of the utility model principle is not departed from,
It should be regarded as the scope of protection of the utility model.
Claims (4)
1. a kind of electric meter box capable of realizing electricity theft prevention alarm, it is characterised in that：Including bridge rectifier (1), zener diode (2), double
To thyristor (3), piezoelectric ceramics (4), subscriber's drop end (5), resistance R1, resistance R2, resistance R2 ', resistance R3, resistance R3 ', electricity
Hinder R4, adjustable resistance R5, resistance R6, resistance R7, resistance R8, resistance R9, resistance R10, resistance R11, resistance R12, resistance R13,
Capacitance C1, capacitance C2, capacitance C3, capacitance C4, capacitance C5, capacitance C6, capacitance C7, coil L, four-operational amplifier LM324, two poles
Pipe D1, triode BG1 and integrated alarm circuit SGZ07, the capacitance C7 right ends are connected with bridge rectifier (1), described
Capacitance C6 upper ends and resistance R13 left ends be all connected with bridge rectifier (1), two pole of the resistance R13 right ends and voltage stabilizing
Pipe (2) upper end be all connected with power pins VDD, the capacitance C7 left ends, coil L upper ends and resistance R1 left ends all with+220V
Pin connects, and the resistance R2 upper ends and resistance R2 ' upper ends all be connected with power pins VDD, the resistance R2 lower ends with
Resistance R3 upper ends are all connected with resistance R4 left ends, four computings of the resistance R4 right ends and adjustable resistance R5 left ends all with left side
The negative input end connection of amplifier LM324, the resistance R2 ' lower ends are connected with resistance R3 ' upper ends, the coil L lower ends,
Resistance R3 lower ends, resistance R3 ' and capacitance C1 lower ends are all connected with bidirectional thyristor (3) upper end, the resistance R1 right ends and electricity
Hold positive input terminal of the C1 upper ends all with the four-operational amplifier LM324 in left side to be connected, the adjustable resistance R5 right ends and two poles
Output terminal of the pipe D1 left ends all with the four-operational amplifier LM324 in left side is connected, the diode D1 right ends, capacitance C2 upper ends
It is connected with positive input terminal of the resistance R6 upper ends all with the four-operational amplifier LM324 on right side, the resistance R7 upper ends and power supply
Pin VDD connections, the negative input end of the resistance R7 lower ends and resistance R8 upper ends all with the four-operational amplifier LM324 on right side
Connection, the output terminal of the resistance R9 upper ends and resistance R11 left ends all with the four-operational amplifier LM324 on right side are connected, institute
The resistance R9 lower ends stated are connected with triode BG1 base stages, the emitter of the triode BG1 respectively with subscriber's drop end (5)
It is connected with bidirectional thyristor (3), the collector of the triode BG1 connects respectively with bidirectional thyristor (3) and resistance R10 lower ends
It connects, the resistance R10 upper ends are connected with capacitance C3 right ends, and the capacitance C3 left ends are connected with coil L lower ends, the pressure
Electroceramics (4) one end is connected with the pin 10 of integrated alarm circuit SGZ07 and piezoelectric ceramics (4) other end is grounded.
2. a kind of electric meter box capable of realizing electricity theft prevention alarm according to claim 1, it is characterised in that：The coil L is wound on
Outside electric wire.
3. a kind of electric meter box capable of realizing electricity theft prevention alarm according to claim 1, it is characterised in that：The capacitance C5 both ends point
The pin 5 of integrated alarm circuit SGZ07 and pin 6 are not connected on.
4. a kind of electric meter box capable of realizing electricity theft prevention alarm according to claim 1, it is characterised in that：The capacitance C4 both ends point
The pin 3 of integrated alarm circuit SGZ07 and pin 4 are not connected on.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721679623.1U CN207424062U (en) | 2017-12-05 | 2017-12-05 | A kind of electric meter box capable of realizing electricity theft prevention alarm |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721679623.1U CN207424062U (en) | 2017-12-05 | 2017-12-05 | A kind of electric meter box capable of realizing electricity theft prevention alarm |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207424062U true CN207424062U (en) | 2018-05-29 |
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ID=62397046
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721679623.1U Active CN207424062U (en) | 2017-12-05 | 2017-12-05 | A kind of electric meter box capable of realizing electricity theft prevention alarm |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207424062U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107843754A (en) * | 2017-12-05 | 2018-03-27 | 国网江苏省电力公司南通供电公司 | A kind of electric meter box capable of realizing electricity theft prevention alarm |
-
2017
- 2017-12-05 CN CN201721679623.1U patent/CN207424062U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107843754A (en) * | 2017-12-05 | 2018-03-27 | 国网江苏省电力公司南通供电公司 | A kind of electric meter box capable of realizing electricity theft prevention alarm |
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