CN206602075U - Relay1 case leakage-current alarm circuit - Google Patents

Relay1 case leakage-current alarm circuit Download PDF

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Publication number
CN206602075U
CN206602075U CN201720325769.XU CN201720325769U CN206602075U CN 206602075 U CN206602075 U CN 206602075U CN 201720325769 U CN201720325769 U CN 201720325769U CN 206602075 U CN206602075 U CN 206602075U
Authority
CN
China
Prior art keywords
resistance
connection
relay1 case
voltage comparator
diode
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN201720325769.XU
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Chinese (zh)
Inventor
蔡向东
王珂琦
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Harbin University of Science and Technology
Original Assignee
Harbin University of Science and Technology
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Harbin University of Science and Technology filed Critical Harbin University of Science and Technology
Priority to CN201720325769.XU priority Critical patent/CN206602075U/en
Application granted granted Critical
Publication of CN206602075U publication Critical patent/CN206602075U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

Relay1 case leakage-current alarm circuit, belongs to relay leakage-current alarm technical field.The problem of the utility model is to solve relay1 case effect of leakage control circuit reliability.It includes hard contact S1, insurance M1, diode L1, light emitting diode L2, voltage comparator Q1, electric capacity C1, electric capacity C2, potentiometer R1, resistance R2, resistance R3, resistance R4, resistance R5, resistance R6 and resistance R7;Contacted by hard contact S1 with relay1 case, insurance M1 ground connection is connected with the ground of relay;When relay1 case leakproof, M1 normallies are insured;When relay1 case leaks electricity, insurance M1 actions cut off circuit, light emitting diode L2 extinguishes.Operating personnel can judge that relay1 case leaks electricity accordingly, and presentation is directly perceived;The utility model is used for the on-line monitoring that relay1 case leaks electricity.

Description

Relay1 case leakage-current alarm circuit
Technical field
The utility model is related to relay1 case leakage-current alarm circuit, belongs to relay leakage-current alarm technical field.
Background technology
Relay is the device that a kind of electric automatization field is commonly used, and is played in daily control circuit vital Effect.Relay1 case leaks electricity, and is a kind of situation often occurred in relay failure, and situation about leaking electricity is very unlikely to hair Feel, such case not only influences to control the reliability of circuit, is also extremely hazardous similarly for operating personnel.
The content of the invention
The utility model purpose be in order to solve relay1 case effect of leakage control circuit reliability the problem of there is provided A kind of relay1 case leakage-current alarm circuit.
Relay1 case leakage-current alarm circuit described in the utility model, it includes hard contact S1, insurance M1, diode L1, light emitting diode L2, voltage comparator Q1, electric capacity C1, electric capacity C2, potentiometer R1, resistance R2, resistance R3, resistance R4, resistance R5, resistance R6 and resistance R7,
Hard contact S1 one end is used to connect relay1 case, the one of hard contact S1 other end connection insurance M1 End, insurance M1 other end ground connection;Hard contact S1 other end connection diode L1 negative pole, diode L1 positive pole connection Resistance R6 one end, resistance R6 other end connection resistance R2 one end, resistance R2 other end connection potentiometer R1 one end, Potentiometer R1 other end ground connection, potentiometer R1 sliding end connection resistance R7 one end, the resistance R7 other end connects two poles Pipe L1 positive pole;
Diode L1 positive pole connection voltage comparator Q1 inverting input, voltage comparator Q1 in-phase input end connects Connect potentiometer R1 one end, voltage comparator Q1 negative pole feeder ear connection resistance R4 one end, resistance R4 other end connection- 12V power supplys, voltage comparator Q1 negative pole feeder ear connection electric capacity C2 one end, electric capacity C2 other end ground connection;Voltage ratio compared with Device Q1 positive pole feeder ear connection electric capacity C1 one end, electric capacity C1 other end ground connection;Voltage comparator Q1 positive pole feeder ear Connect resistance R3 one end, resistance R3 other end connection+12V power supplys;
Resistance R3 other end connection resistance R2 one end and resistance R5 one end, resistance R5 other end connection voltage ratio Compared with device Q1 output end, resistance R5 other end connecting luminous diode L2 positive pole, light emitting diode L2 negative pole ground connection.
Advantage of the present utility model:The utility model is contacted by hard contact S1 with relay1 case, and insurance M1 is connect Ground is connected with the ground of relay.When relay1 case leakproof, M1 normallies are insured;When relay1 case leaks electricity, Insure M1 actions, cut off circuit, light emitting diode L2 extinguishes.Operating personnel can judge that relay1 case leaks electricity accordingly, presentation Intuitively.The monitoring whether leaked electricity to relay1 case is thus achieved, is conducive in time tieing up relay in the case of failure Shield, so that it is guaranteed that the reliability of control circuit where relay.
The utility model circuit structure is simple, and dependable performance effectively realizes the monitoring to relay working condition.
Brief description of the drawings
Fig. 1 is the circuit theory diagrams of relay1 case leakage-current alarm circuit described in the utility model.
Embodiment
Embodiment one:Illustrate present embodiment with reference to Fig. 1, relay1 case described in present embodiment leaks electricity Warning circuit, it includes hard contact S1, insurance M1, diode L1, light emitting diode L2, voltage comparator Q1, electric capacity C1, electricity Hold C2, potentiometer R1, resistance R2, resistance R3, resistance R4, resistance R5, resistance R6 and resistance R7,
Hard contact S1 one end is used to connect relay1 case, the one of hard contact S1 other end connection insurance M1 End, insurance M1 other end ground connection;Hard contact S1 other end connection diode L1 negative pole, diode L1 positive pole connection Resistance R6 one end, resistance R6 other end connection resistance R2 one end, resistance R2 other end connection potentiometer R1 one end, Potentiometer R1 other end ground connection, potentiometer R1 sliding end connection resistance R7 one end, the resistance R7 other end connects two poles Pipe L1 positive pole;
Diode L1 positive pole connection voltage comparator Q1 inverting input, voltage comparator Q1 in-phase input end connects Connect potentiometer R1 one end, voltage comparator Q1 negative pole feeder ear connection resistance R4 one end, resistance R4 other end connection- 12V power supplys, voltage comparator Q1 negative pole feeder ear connection electric capacity C2 one end, electric capacity C2 other end ground connection;Voltage ratio compared with Device Q1 positive pole feeder ear connection electric capacity C1 one end, electric capacity C1 other end ground connection;Voltage comparator Q1 positive pole feeder ear Connect resistance R3 one end, resistance R3 other end connection+12V power supplys;
Resistance R3 other end connection resistance R2 one end and resistance R5 one end, resistance R5 other end connection voltage ratio Compared with device Q1 output end, resistance R5 other end connecting luminous diode L2 positive pole, light emitting diode L2 negative pole ground connection.
Resistance R6 and resistance R7 resistance are equal.
Operation principle:Voltage comparator Q1 two feeder ears pass through+and -12V power supplys power, it is ensured that and voltage comparator is stable Work.Resistance R3, resistance R4 are current-limiting resistance, and electric capacity C1, electric capacity C2 is filter capacitor, can protect voltage comparator work electricity The stabilization of pressure.R5 is pull-up resistor, it is ensured that voltage comparator output end can export forward voltage.
In use, hard contact S1 is connected with relay1 case, it is ensured that conducting, the ground phase on M1 ground and relay is insured Connection.When relay1 case leakproof, M1 normallies are insured, then diode L1 negative electrode is connected to the ground by insuring M1 Connect ,+12V power supplys pass through resistance R6 and diode L1 partial pressures.Because diode L1 is in the conduction state, then voltage comparator is anti- To the tube voltage drop that input terminal voltage is diode L1.The tube voltage drop of general diode is not over 1V.Now voltage comparator In-phase end input voltage is the voltage after resistance R2 and potentiometer R1 partial pressures.By adjusting R1 resistance, electricity can be adjusted Press in the voltage of comparator in-phase input end, this circuit and the voltage of voltage comparator Q1 in-phase input end is adjusted to+5V, be The reference voltage of this circuit.When relay1 case leakproof, the homophase input terminal voltage of voltage comparator is more than anti-phase input Terminal voltage, voltage comparator output end exports positive voltage, light emitting diode L2 Chang Liang by pull-up resistor R5.
When relay1 case leaks electricity, insurance M1 actions cut off circuit, then resistance R7 accesses circuit.Voltage comparator Q1 Inverting input input voltage be voltage Jing Guo R6 and R7 partial pressures.This circuit makes resistance R6 and resistance R7 resistance equal, R6=R7, then anti-phase input terminal voltage is+6V.Now the voltage of in-phase input end is+5V, less than reverse input end voltage.Then Voltage comparator Q1 output ends export low level.Now light emitting diode L2 extinguishes.Operating personnel can be according to light emitting diode Light on and off state intuitively judge relay1 case leak electricity.Light emitting diode L2 can select green light, when green light extinguishes, carry Show leak current fault, it is dangerous.

Claims (2)

1. a kind of relay1 case leakage-current alarm circuit, it is characterised in that it include hard contact S1, insurance M1, diode L1, Light emitting diode L2, voltage comparator Q1, electric capacity C1, electric capacity C2, potentiometer R1, resistance R2, resistance R3, resistance R4, resistance R5, Resistance R6 and resistance R7,
Hard contact S1 one end is used to connect relay1 case, and hard contact S1 other end connection insurance M1 one end is protected Dangerous M1 other end ground connection;Hard contact S1 other end connection diode L1 negative pole, diode L1 positive pole connection resistance R6 one end, resistance R6 other end connection resistance R2 one end, resistance R2 other end connection potentiometer R1 one end, current potential Device R1 other end ground connection, potentiometer R1 sliding end connection resistance R7 one end, resistance R7 other end connection diode L1 Positive pole;
Diode L1 positive pole connection voltage comparator Q1 inverting input, voltage comparator Q1 in-phase input end connection electricity Position device R1 one end, voltage comparator Q1 negative pole feeder ear connection resistance R4 one end, resistance R4 other end connection -12V Power supply, voltage comparator Q1 negative pole feeder ear connection electric capacity C2 one end, electric capacity C2 other end ground connection;Voltage comparator Q1 Positive pole feeder ear connection electric capacity C1 one end, electric capacity C1 other end ground connection;Voltage comparator Q1 positive pole feeder ear connection Resistance R3 one end, resistance R3 other end connection+12V power supplys;
Resistance R3 other end connection resistance R2 one end and resistance R5 one end, resistance R5 other end connection voltage comparator Q1 output end, resistance R5 other end connecting luminous diode L2 positive pole, light emitting diode L2 negative pole ground connection.
2. relay1 case leakage-current alarm circuit according to claim 1, it is characterised in that resistance R6 and resistance R7 resistance Value is equal.
CN201720325769.XU 2017-03-30 2017-03-30 Relay1 case leakage-current alarm circuit Expired - Fee Related CN206602075U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201720325769.XU CN206602075U (en) 2017-03-30 2017-03-30 Relay1 case leakage-current alarm circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201720325769.XU CN206602075U (en) 2017-03-30 2017-03-30 Relay1 case leakage-current alarm circuit

Publications (1)

Publication Number Publication Date
CN206602075U true CN206602075U (en) 2017-10-31

Family

ID=60144867

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201720325769.XU Expired - Fee Related CN206602075U (en) 2017-03-30 2017-03-30 Relay1 case leakage-current alarm circuit

Country Status (1)

Country Link
CN (1) CN206602075U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108790882A (en) * 2018-06-12 2018-11-13 方碧水 A kind of new-energy automobile quick charge device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108790882A (en) * 2018-06-12 2018-11-13 方碧水 A kind of new-energy automobile quick charge device

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CF01 Termination of patent right due to non-payment of annual fee
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20171031

Termination date: 20180330