CN2400952Y

CN2400952Y - Domestic overvoltage automatic controller

Info

Publication number: CN2400952Y
Application number: CN 99251856
Authority: CN
Inventors: 马光
Original assignee: Individual
Current assignee: Individual
Priority date: 1999-12-26
Filing date: 1999-12-26
Publication date: 2000-10-11
Anticipated expiration: 2009-12-26

Abstract

The utility model relates to a domestic over-voltage automatic controller, which is composed of an input interface, a lightning protection circuit, a pressure reducing circuit, a voltage stabilizing circuit, an alarm circuit, a reset circuit, a rectification circuit, a control execution circuit, an electronic switch circuit, a trigger circuit, an anti-interference circuit, a reference threshold circuit, a sampling circuit and an output interface. The utility model has the functions that house lead-in electric appliances are all the protected objects of the utility model, the stand-by power consumption is no more than 0.3 W, the range of adaptive voltage is from 0 V to 380 V, the control starting action is sensitive, the response time is no more than 0.2 seconds, the utility model can automatically reset and can prevent the lightening, the utility model can also ensure the personal safety of users and the safety of various household appliances, etc. The utility model is suitable to be used after house lead-in power supply of each family is installed on an electric meter.

Description

Family expenses overvoltage automatic controller

At present, in the electric power system of China, because the unexpected electric operational accident that a variety of causes causes happens occasionally, this paroxysmal electric operational accident is most typical be civilian single-phase 220V supply voltage be increased to suddenly near or surpass 380V, it is badly damaged that all kinds of household electrical appliance of numerous families are subjected to, even initiation fire; Prior art such as refrigerator protector, air conditioner protector etc., its shortcoming are that the object of protection is single, and it is narrow to adapt to voltage range, himself is also burnt sometimes, and stand-by power consumption does not possess lightning protection electric work energy more than several watts.

The purpose of this utility model is to provide a kind of family expenses overvoltage automatic controller, be installed in after the family expenses kilowatt-hour meter, the house lead in power supply of control in the subscriber household, when power supply surpass set start to control magnitude of voltage the time, with the power supply that cuts off rapidly in the subscriber household, and send rapid chimes of doom simultaneously; After service restoration is normal, connects power supply automatically, thereby reach the safety purpose of control automatically.

The purpose of this utility model is achieved in that by input interface and lightning protection circuit, reduction voltage circuit, voltage stabilizing circuit, warning circuit, reset circuit, rectification circuit, control executive circuit, electronic switching circuit, circuits for triggering, anti-jamming circuit, benchmark threshold circuit, sample circuit, output interface and constitutes.Lightning protection circuit RV adopts high-power varistor, and parameter is 2KV/20KA, and its two ends are connected on respectively on the live wire and zero line of input interface.Control executive circuit and electronic switching circuit are made up of with controllable silicon VS1 relay K 1, dress up an assembly, the resistance R 8 of the termination rectification circuit of K1, the negative electrode of another termination controllable silicon VS1, the minus earth of VS1, the normally-closed contact K1-1 of K1 is connected between the live wire of input interface and output interface, and the normally-closed contact K1-3 of K1 is connected between the zero line of input interface and output interface, the end ground connection of the normally opened contact K1-2 of K1, the pin 3 of the ic chip 1 of another termination voltage stabilizing circuit.Reduction voltage circuit, rectification circuit, voltage stabilizing circuit dress are an assembly, capacitor C 1, resistance R 1, R7 form reduction voltage circuit, the end of R1 and C1 is connected on the live wire of input interface, the other end of R1, C1 also connects the end of R7, one side of the normally-closed contact K2-1 of K2 in another termination reset circuit of R7, another edge joint rectification circuit of K2-1; Rectifier diode VD2-VD5 and resistance R 8 are formed rectification circuit, and VD2-VD5 forms bridge rectifier, and its output connects the end of R8; Resistance R 9, diode VD6, capacitor C 6, electrochemical capacitor C5, C7, ic chip 1 are formed voltage stabilizing circuit, the other end of the termination R8 of R9, the positive pole of another termination VD6 of R9, the negative pole of VD6 also connects the utmost point of positive pole, C6 of C5 and the pin 1 of IC1, the negative pole of C5 also connects another utmost point of C6, the pin 3 of IC1 and the negative pole of C7, meets the normally opened contact K1-2 of K1 more simultaneously.Sample circuit, benchmark threshold circuit, anti-jamming circuit, circuits for triggering are dressed up an assembly, diode VD1, resistance R 2, R3, R4, electrochemical capacitor C2 form sample circuit, the positive pole of diode VD1 connects the live wire of input interface, negative pole series resistor R2, R3, the positive pole of the end of R4 and C2 also meets R3, the other end of R4 and the minus earth of C2; It is the voltage-stabiliser tube of 15V/1W that benchmark threshold circuit VZ1 selects model for use, and its negative pole connects the positive pole of C2; Anti-jamming circuit is made up of resistance R 5, electrochemical capacitor C3, C4, and circuits for triggering are made up of resistance R 6, behind R5, R6 and C3 anodal in parallel, connect the positive pole of VZ1, the other end ground connection of R5, the minus earth of C3, C4, the positive pole of C4 and the other end of R6 are connected in the control grid of controllable silicon VS1.Reset circuit is by relay K 2 and normally-closed contact K2-1 thereof, diode VD7, electrochemical capacitor C8, C9, resistance R 10, R11, triode VT1, VT2 forms, the end of K2 and the negative pole of VD7, the positive pole of C8, connect the pin 2 of IC1 after the end parallel connection of R10, the other end of K2 and the positive pole of VD7, connect the collector electrode of VT1 after the negative pole parallel connection of C8, VT1, be connected with the normally opened contact K1-2 of K1 after the negative pole parallel connection of the emitter of VT2 and C9, the base stage of VT1, the positive pole of C9, connect the collector electrode of VT2 after the other end parallel connection of R10, the base stage of VT2 connects the end of R11, the positive pole of another termination VZ1 of R11.Warning circuit FM selects the electronic buzzer of FMQ27-24 for use, the pin 2 of one termination IC1, the normally opened contact K1-2 of another termination K1.

The utility model compared with prior art, it is wide to have a protected object, is all household electrical appliance in the family; Stand-by power consumption is little of negligible degree, only 0.3W; The wide ranges (0-380V) that adapts to voltage; Start to control and be active in one's movements, response time≤0.2 second; Possess auto-reset function (be service restoration normal after, the power supply among the connecting subscribers participating man automatically); Possess lightning protection electric work energy, the thunder and lightning of invading in the power supply network can be curbed; Adopt high-power many groups contact electromagnetic relay as control executing mechanism, in case when over-voltage condition appearred in the power supply in the user family, supply voltage raise, actuator can cut off live wire, stop various hidden danger, guarantee that user's personal safety and all kinds of household electrical appliance are perfectly safe.Suitable each tame house lead in power supply uses after being installed in kilowatt-hour meter.

The utility model further describes below with reference to the embodiment in the accompanying drawing:

Fig. 1 is a functional-block diagram, and Fig. 2 is the circuit structure schematic diagram.

Constitute by input interface and lightning protection circuit, reduction voltage circuit, voltage stabilizing circuit, warning circuit, reset circuit, rectification circuit, control executive circuit, electronic switching circuit, circuits for triggering, anti-jamming circuit, benchmark threshold circuit, sample circuit, output interface among Fig. 1.

Among Fig. 2, select resistance R 1:1M among the embodiment for use, R2:43K, R3:47K, R4:12K, R5:100K, R6:30K, R7:10 Ω, R8:30 Ω, R9:100 Ω, R10:15K, R11:68K.RV selects the high-power piezo-resistance of 2KV/20KA for use.Capacitor C 1:068 μ F/AC1200V, C6:0.33 μ F/63V.Electrochemical capacitor C2:10 μ F/100V, C3:1 μ F/25V, C4:0.022 μ F/50V, C5:1000 μ F/63V, C7:100 μ F/16V, C8:47 μ F/16V, C9:33 μ F/16V.Relay K 1 is selected JQX-59F for use, and K2 selects JQX-3 for use; VZ1 selects the voltage stabilizing didoe of 15V/1W for use; VS1 selects the controllable silicon of MCR100-8 for use.Ic chip 1:AN7812.Diode VD1-VD7 selects rectifier diode for use.Triode VT1, VT2:8050D.

Under the normal situation of power supply, exhausted most circuit all is in the standby resting state, has only sample circuit (VD1 among Fig. 2, R2, R3, R4, C2) at work, complete machine quiescent dissipation≤0.3W.When power supply surpass to set start to control magnitude of voltage the time, the overvoltage signal that sample circuit collects is higher than the thresholding of benchmark threshold circuit VZ1, the VZ1 conducting, triggering signal is provided for the control grid of electronic switch VS1 through R6, C4, make the rapid conducting of VS1, control is carried out relay K 1 and is got electric adhesive, and its normally-closed contact K1-1, K1-3 cut off the power supply of output interface rapidly; Simultaneously, K1-2 normally opened contact closure, pressurizer IC1 has power supply output, and electronic buzzer gets electric work, sends alarm sound; At this moment, the VT2 in the reset circuit is because VZ1 output high potential and saturation conduction, and its collector potential is current potential approx, also current potential approx of the base potential of VT1 correspondingly, and therefore, VT1 is in cut-off state.After service restoration was normal, because the voltage signal at R4 two ends is lower than the threshold value of VZ1, VZ1 ended, and the VT2 base stage is also ended because of losing forward bias voltage; At this moment, stabilized voltage power supply provides forward bias voltage for the VT1 base stage through R10, make the VT1 saturation conduction, relay K 2 gets electric adhesive, its normally-closed contact K2-1 disconnects the working power that relay K 1 is carried out in control immediately, the K1 dead electricity, its normally-closed contact K1-1, K1-3 reset, and connect the power supply of output interface again automatically; The also corresponding electric power loop that disconnects pressurizer IC1 of the normally opened contact K1-2 of K1, the output of pressurizer non-transformer, alarm buzzer FM and reset circuit all recover static because of dead electricity, and integrated circuit is got back to holding state again.Lightning protection circuit RV adopts the high-power varistor of power supply system special use.When the power supply network operate as normal, it is equivalent to an insulator; In case power supply network has thunder and lightning to invade, it will curb the rapid bypass of super-high pressure pulse that thunder and lightning caused to work immediately less than 50 nanoseconds speed; After the thunder and lightning, it recovers state of insulation again.

The shell of controller is the flame retardant type engineering plastics, is shaped as cuboid, divides end box and hamper.Design has input, output connection port on the end box; High-power magnetic relay, high-power varistor, warning electronic buzzer and movement circuit plate etc. are installed in the end box.Hamper rises to be decorated and dustproof effect, and the surface of hamper is pasted with product brand nameplate etc.Hamper and end box fasten as one with tapping screw.

Claims

1, family expenses overvoltage automatic controller is characterized in that being made of input interface and lightning protection circuit, reduction voltage circuit, voltage stabilizing circuit, warning circuit, reset circuit, rectification circuit, control executive circuit, electronic switching circuit, circuits for triggering, anti-jamming circuit, benchmark threshold circuit, sample circuit, output interface.

2, family expenses overvoltage automatic controller according to claim 1 is characterized in that lightning protection circuit RV adopts high-power varistor, and parameter is 2KV/20KA, and its two ends are connected on respectively on the live wire and zero line of input interface.

3, family expenses overvoltage automatic controller according to claim 1, it is characterized in that controlling executive circuit and electronic switching circuit is made up of with controllable silicon VS1 relay K 1, dress up an assembly, the resistance R 8 of the termination rectification circuit of K1, the negative electrode of another termination controllable silicon VS1, the minus earth of VS1, the normally-closed contact K1-1 of K1 is connected between the live wire of input interface and output interface, the normally-closed contact K1-3 of K1 is connected between the zero line of input interface and output interface, the end ground connection of the normally opened contact K1-2 of K1, the pin 3 of the ic chip 1 of another termination voltage stabilizing circuit.

4, family expenses overvoltage automatic controller according to claim 1, it is characterized in that reduction voltage circuit, rectification circuit, voltage stabilizing circuit dress are an assembly, capacitor C 1, resistance R 1, R7 form reduction voltage circuit, the end of R1 and C1 is connected on the live wire of input interface, the other end of R1, C1 also connects the end of R7, one side of the normally-closed contact K2-1 of K2 in another termination reset circuit of R7, another edge joint rectification circuit of K2-1; Rectifier diode VD2-VD5 and resistance R 8 are formed rectification circuit, and VD2-VD5 forms bridge rectifier, and its output connects the end of R8; Resistance R 9, diode VD6, capacitor C 6, electrochemical capacitor C5, C7, ic chip 1 are formed voltage stabilizing circuit, the other end of the termination R8 of R9, the positive pole of another termination VD6 of R9, the negative pole of VD6 also connects the utmost point of positive pole, C6 of C5 and the pin 1 of IC1, the negative pole of C5 also connects another utmost point of C6, the pin 3 of IC1 and the negative pole of C7, meets the normally opened contact K1-2 of K1 more simultaneously.

5, family expenses overvoltage automatic controller according to claim 1, it is characterized in that sample circuit, benchmark threshold circuit, anti-jamming circuit, circuits for triggering dress up an assembly, diode VD1, resistance R 2, R3, R4, electrochemical capacitor C2 form sample circuit, the positive pole of diode VD1 connects the live wire of input interface, negative pole series resistor R2, R3, the positive pole of the end of R4 and C2 also meets R3, the other end of R4 and the minus earth of C2; It is the voltage-stabiliser tube of 15V/1W that benchmark threshold circuit VZ1 selects model for use, and its negative pole connects the positive pole of C2; Anti-jamming circuit is made up of resistance R 5, electrochemical capacitor C3, C4, and circuits for triggering are made up of resistance R 6, behind R5, R6 and C3 anodal in parallel, connect the positive pole of VZ1, the other end ground connection of R5, the minus earth of C3, C4, the positive pole of C4 and the other end of R6 are connected in the control grid of controllable silicon VS1.

6, family expenses overvoltage automatic controller according to claim 1, it is characterized in that reset circuit is by relay K 2 and normally-closed contact K2-1 thereof, diode VD7, electrochemical capacitor C8, C9, resistance R 10, R11, triode VT1, VT2 forms, the end of K2 and the negative pole of VD7, the positive pole of C8, connect the pin 2 of IC1 after the end parallel connection of R10, the other end of K2 and the positive pole of VD7, connect the collector electrode of VT1 after the negative pole parallel connection of C8, VT1, be connected with the normally opened contact K1-2 of K1 after the negative pole parallel connection of the emitter of VT2 and C9, the base stage of VT1, the positive pole of C9, connect the collector electrode of VT2 after the other end parallel connection of R10, the base stage of VT2 connects the end of R11, the positive pole of another termination VZ1 of R11.

7, family expenses overvoltage automatic controller according to claim 1 is characterized in that warning circuit FM selects the electronic buzzer of FMQ27-24 for use, the pin 2 of one termination IC1, the normally opened contact K1-2 of another termination K1.