CN2068686U - Multifunction controller for preventing stealing electricity - Google Patents

Abstract

The utility model relates to a multifunction controller for preventing stealing electricity which is a power supplying electronic circuit device used matching on the front and the back of a single-phase watt-hour meter. The utility model comprises a direct current stabilized circuit, a delay protection circuit, an electronic switch, a controller for preventing stealing electricity composed of an actuating mechanism, a zero-sequence current mutual-inductor, etc., a zero-removing electric control for preventing stealing electricity, an electric leakage and shock protector, an electric limiting and over-current protector, etc. A control circuit for preventing stealing electricity contains an annular comparator composed of four diodes. The utility model centralizes a device for preventing stealing electricity, power supplying with fixed quantity, load short-circuit protection, electric leakage and shock protection and the timed guard of high-grade electric appliances and equipment such as refrigerators, etc. into integration. The utility model has the advantages of small size, light weight, complete function, stable performance, safety and low manufacturing cost; the multifunction controller for preventing stealing electricity can effectively prevent electricity from being stolen by adopting various measures and play multiple functions of security protection and is an ideal control device for multiple safe electric utilizing at home and abroad presently.

Description

Multifunction controller for preventing stealing electricity

The utility model is the power supply electronic circuit device adapted reaches table before single-phase watt-hour meter after, specifically, it is a kind ofly to be used to protect various electricity filching behaviors, current overload or load short circuits and to guarantee personal electric shock safety and ensure the multi-function device of high-grade electric equipment operate as normal such as refrigerator.

At present, electricity filching behavior happens occasionally, and the stealing electricity method that is adopted is also a lot.As: show wiring more, change preface, live wire over the ground, remove hook and open meter case, in table, carry out various electricity filching behaviors, mode is various, has caused unnecessary economic loss to country.Though various anti-electricity-theft protectors have appearred now, all since this body structure and function limit, often unsatisfactory, do not play its due effect.On August 31st, 1988, the utility model " the thief-proof protector unit of rationing the power supply " (application number CN87210812U) of bulletin proposed a kind of anti-electricity-theft device of rationing the power supply, though this device can prevent the preceding electricity filching behavior of various tables, but to electricity filching behavior in the various tables, as it is powerless to change preface, dismounting table inner hanging hook etc., simultaneously owing to used the different lead of a Gent, thereby its reliability also is greatly affected.

The purpose of this utility model is to provide a kind of rations the power supply, prevents the preceding multi-function device that reaches high-grade electric equipment operate as normal such as stealing in the table, electric shocked guard and guarantee refrigerator of various tables, in the hope of stopping various electricity filching behaviors, guarantee high-grade electric equipment energy such as personal safety and refrigerator operate as normal, prolong its serviceable life.

The purpose of this utility model is achieved by following technological approaches: a kind of multi-functional controller for preventing illegal use of electricity comprises direct current regulation circuit, zero sequence current mutual inductor B ₁, overload current testing circuit, electronic switch IC ₁, several parts such as topworks.

Zero sequence current mutual inductor B ₁Primary coil L ₁, L ₂Be serially connected with on the zero line and live wire of ammeter house lead in its secondary coil L respectively ₃With by resistance R ₄And diode D ₈～D ₁₀The reference voltage branch road of forming is formed leakage jointly, is got an electric shock and detect and tear open zero stealing observation circuit, L ₃Output terminal through or gate diode D ₇Back and electronic switch IC ₁Control end " 5 " connect, the overload current testing circuit is by current transformer B ₂Primary coil L ₄, secondary coil L ₅, commutation diode D ₁₁, filter capacitor C ₇And current settings potentiometer W ₁Deng composition, its output terminal warp or gate diode D ₁₂With electronic switch IC ₁Control end " 5 " join current transformer B ₂Primary coil L ₄Be serially connected with on the live wire of ammeter house lead in, topworks can select relay J for use ₁, relay J ₁Action by electronic switch IC ₁Control, its normally closed contact J _1-1Be serially connected with on the live wire of ammeter house lead in, the utility model is provided with an anti-electricity-theft control circuit, and described control circuit is by current transformer B ₂Secondary coil L ₆, current transformer B ₃Secondary coil L ₈And by diode D ₁₃-D ₁₆The annular comparer of forming is formed, the output terminal warp or the gate diode D of anti-electricity-theft control circuit ₁With electronic switch IC ₁Control end " 5 " join current transformer B ₃Primary coil L ₈Be serially connected with on the live wire of ammeter output line, by current transformer B ₃Primary coil L ₇With secondary coil L ₈Monitor and control electricity filching behavior in the various tables jointly.

Following accompanying drawing provides an embodiment of the present utility model:

Fig. 1 is multi-functional controller for preventing illegal use of electricity electrical schematic diagram

Fig. 2 is a structural representation

The embodiment that provides below in conjunction with accompanying drawing does detailed description to the utility model:

With reference to Fig. 1, Fig. 2, multi-functional controller for preventing illegal use of electricity is by D.C. regulated power supply, electronic switch IC ₁Topworks, display circuit (LED), zero sequence current mutual inductor B ₁Several parts such as overload current testing circuit and anti-electricity-theft control circuit are formed, and topworks can select relay J for use ₁Now as follows to controller each several part division:

1, direct current regulation circuit:

It is by diode D ₁-D ₄The bridge rectifier circuit, the filter capacitor C that form ₂, DC voltage-stabilizing pipe DW ₁Deng composition, its output terminal and electronic switch IC ₁Input end " 1 " join electronic switch IC ₁Output terminal " 2 ", " 3 " and relay J ₁And LED and resistance R ₇Series arm join relay J ₁The switching action and the demonstration situation of LED be subjected to electronic switch IC fully ₁Control, electronic switch IC ₁Can select TW8778 for use, relay J ₁Normally closed contact J _1-1Be serially connected with on the live wire of ammeter service wire, high-grade electric equipment such as unlikely damage refrigerator when restoring electricity immediately again after electrical network is had a power failure suddenly, thus ensure high-grade electric equipment operate as normal such as refrigerator, the electronic switch IC in circuit ₁Control end " 5 " on be provided with a delay circuit, described delay circuit is by resistance R ₅, capacitor C ₃, resistance R ₆, capacitor C ₄, C ₅Form, for guaranteeing at electronic switch IC ₁After the disconnection, can make capacitor C ₄On electric charge promptly release, thereby guarantee that each delay time is consistent, the utility model is that a diode D is set in delay circuit ₆Thereby, can make C ₄On electric charge release rapidly.Its principle of work is as follows: when circuit input end energized moment, through D ₁-D ₄Rectification, capacitor C ₂Filtering and through stabilivolt DW ₁Resulting DC voltage is at first through resistance R after the voltage stabilizing ₃To capacitor C ₃Charging makes electronic switch IC ₁The current potential of control end " 5 " be higher than its trigger voltage (1.6V) and conducting immediately, relay J ₁Get electric adhesive, its normally closed contact J _1-1Disconnect, block out-put supply, LED is lighted simultaneously, and indication circuit is in the power-off protection state at this moment, because electronic switch IC ₁Conducting, the voltage of its output terminal " 2 ", " 3 " is through resistance R ₆To C ₄Charging makes electronic switch IC ₁Control end " 5 " continue to keep one and be higher than the voltage of 1.6V and continue conducting, relay J ₁Continue to keep attracting state, along with capacitor C ₄The continuous decline of charging current is through (being roughly 5 minutes) electronic switch IC behind the predetermined delay time ₁Control end " 5 " current potential be lower than its initiate potential and end relay J ₁Outage, normally closed contact J _1-1Connect, circuit restores electricity, and has so just realized the purpose of delay protection.2, leakage, electric shocked guard and tamper zero stealing control circuit:

By zero sequence current mutual inductor B ₁, or gate diode and by diode D ₈-D ₁₀With resistance R ₄The compositions of forming such as reference voltage branch road, zero sequence current mutual inductor B ₁Primary coil L ₁, L ₂Be serially connected with respectively on the live wire and zero line of ammeter service wire.Its principle of work is as follows: when do not leak, electric shock accidents or when not tearing zero electricity filching behavior open, flow through zero sequence current mutual inductor B ₁Primary coil L ₁, L ₂In size of current equate, direction is opposite, L ₁, L ₂In resultant flux be zero, secondary coil L ₃In non-inductive output, by diode D ₈-D ₁₀With resistance R ₄Reference voltage warp or gate diode D in the foundation of A point ₇Be added to electronic switch IC ₁The current potential of control end " 5 " be lower than its initiate potential electronic switch IC ₁End its normally closed contact J _1-1Closure is in the normal power supply state this moment.When leak, electric shock accidents or when tearing zero electricity filching behavior open, this moment, feed circuit promptly can become diverter branch to be equivalent to a fiery ground by megarelief, therefore flow through L ₁, L ₂In size of current unequal, at secondary coil L ₃In promptly can produce induced voltage, surpassed electronic switch IC behind the positive half cycle of induced voltage and the reference voltage superposition ₁Initiate potential and make electronic switch IC ₁Conducting, thus out-put supply blocked, the generation that guarantees personal safety and stopped to tear open zero electricity filching behavior.After accident was got rid of, through the delay time of regulation, circuit is automatic recovery of power supply again.

3, ration the power supply and current foldback circuit:

By current transformer B ₂Primary coil L ₄, secondary coil L ₅, commutation diode D ₁₁, filter capacitor C ₇And current settings potentiometer W ₁Deng composition, its output terminal warp or gate diode D ₁₂With electronic switch IC ₁Control end " 5 " join current transformer B ₂Primary coil L ₄Be serially connected with on the live wire of ammeter service wire.When flowing through primary coil L ₄In electric current when surpassing setting value, at secondary coil L ₅In induced voltage through rectification, after the filtering by or gate diode D ₁₂Make electronic switch IC ₁Conducting, relay J ₁Be able to adhesive, its normally closed contact J _1-1Disconnect, cut off power supply, reached and rationed the power supply and the purpose of overcurrent protection.After circuit recovers normally, behind preset time, get final product automatic recovery of power supply.

4, anti-electricity-theft control circuit:

By current transformer B ₂Secondary coil L ₆, current transformer B ₃Secondary coil L ₈And by diode D ₁₃-D ₁₆The compositions of forming such as annular comparer, current transformer B ₃Primary coil L ₇Be serially connected with on the live wire of ammeter output terminal.The output terminal warp or the gate diode D of circuit ₁₇With electronic switch IC ₁Control end " 5 " join, when no electricity filching behavior takes place, flow through coil L ₆, L ₈In size of current equate that direction is opposite, promptly B, C point current potential equates, E, F point no-voltage is exported, at this moment electronic switch IC ₁End, circuit is in the normal power supply state.When taking place to show, to change preface more, when removing in hook and other various tables electricity filching behavior, flowing through coil L ₆, L ₈In size of current do not wait, this moment, B, C point current potential was also unequal, E, F point has voltage to export, thereby makes electronic switch IC ₁Conducting, normally closed contact J _1-1Disconnect, block power supply, treat that electricity filching behavior is got rid of after, again through restoring electricity voluntarily behind the predetermined delay time.

The utility model integrates high-grade electric equipment delay protections such as anti-electricity-theft device, quantitatively power supply, load short circuits protection, leak shock protection and refrigerator; volume is little, in light weight, function complete, stable performance, safe and reliable; low cost of manufacture; can prevent to adopt various means stealings effectively and play multinomial safeguard protection effect, be at present domestic and international comparatively desirable a kind of multinomial safety utilization of electric power opertaing device.

Claims (3)

1, a kind of multi-functional controller for preventing illegal use of electricity comprises direct current regulation circuit, zero sequence current mutual inductor B ₁, overload current testing circuit, electronic switch IC ₁, topworks etc., zero sequence current mutual inductor B ₁Primary coil L ₁, L ₂Contact on the zero line and live wire of dried ammeter house lead in its secondary coil L respectively ₃With by resistance R ₄And diode D ₈-D ₁₀The reference voltage branch road of forming is formed leak shock jointly and is detected and tear open zero stealing observation circuit, L ₃Output terminal or gate diode D ₇Back and electronic switch IC ₁Control end " 5 " join, the overload current testing circuit is by current transformer B ₂Primary coil L ₄Secondary coil L ₃, commutation diode D ₁₁, filter capacitor C ₇And current settings potentiometer W ₁Deng composition, its output terminal warp or gate diode D ₁₂With electronic switch IC ₁Control end " 5 " join current transformer B ₂Primary coil L ₄Be serially connected with on the live wire of ammeter house lead in relay J ₁Action by electronic switch IC ₁Control its normal valve contact J _1-1Be serially connected with on the live wire of ammeter house lead in of the present utility model being characterised in that by current transformer B ₂Secondary coil L ₆, current transformer B ₃Secondary coil L ₈And by diode D ₁₃-D ₁₆The annular comparer of forming is formed an anti-electricity-theft control circuit, the output terminal warp or the gate diode D of anti-electricity-theft control circuit ₁₇With electronic switch IC ₁Control end " 5 " join current transformer B ₃Primary coil L ₇Be serially connected with on the live wire of ammeter output line.

2, multi-functional controller for preventing illegal use of electricity as claimed in claim 1 is characterized in that electronic switch IC ₁Control end " 5 " on be connected to one by resistance R ₅, capacitor C ₃, resistance R ₆, capacitor C ₄, C ₅The delay control circuit of forming.

3, multi-functional controller for preventing illegal use of electricity as claimed in claim 2 is characterized in that delay control circuit is provided with one and guarantees at electronic switch IC ₁After the disconnection, can make capacitor C ₄On the diode D that releases rapidly of electric charge ₆

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