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A relay moving part detection circuit and a relay having the circuit

A technology of moving parts and detection circuits, which is applied in the direction of circuit breaker testing, relays, electromagnetic relays, etc., can solve the problems of not having self-detection on-off state and fault state, unfavorable control system maintenance, delay in circuit fault detection, etc., to achieve Effect of Improving the Efficiency of Circuit Fault Detection

Active Publication Date: 2020-05-26
ZHEJIANG YINGLUOHUA NEW ENERGY TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention solves the defect that the existing relay does not have the self-detection on-off state and fault state, which leads to the occurrence of circuit faults easily, and when the control circuit fails, the location of the fault point cannot be quickly and accurately judged. , which brings delays to circuit fault detection and is not conducive to the maintenance of the entire control system, and provides a method that can effectively detect the position change status of relay moving parts, and can promptly determine the location of the fault point of the control system, improving the efficiency of circuit fault detection The relay moving parts detection circuit and the relay with the circuit

Method used

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  • A relay moving part detection circuit and a relay having the circuit
  • A relay moving part detection circuit and a relay having the circuit
  • A relay moving part detection circuit and a relay having the circuit

Examples

Experimental program
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Embodiment 1

[0019] figure 1 , image 3 In the shown embodiment, a relay moving part detection circuit includes a relay 10 and a DC power supply voltage 20, and also includes a decision circuit 30, a motion sensor 40 and a signal output circuit 50, and the decision circuit 30 includes a moving part detection device , the moving part detection device comprises an infrared sensor 70 and a voltage comparator IC1, and the motion sensor 40 is a relay moving part 41; the output terminal of the decision circuit 30 is electrically connected with the signal output circuit 50, and the front stage of the decision circuit 30 is connected with the motion sensor 40 respectively. Electrically connected with the relay 10, the infrared sensor 70 detects the position change of the relay moving part 41, and the decision circuit 30 and the motion sensor 40 are electrically connected with the DC power supply voltage 20 respectively; the decision circuit 30 detects the relay moving part according to the infrare...

Embodiment 2

[0023] figure 2 , Figure 4In the shown embodiment, the control terminal sensor 40 is electrically connected to the front stage of the decision circuit 30, and the control terminal sensor 40 adopts a photocoupler 80. The decision circuit also includes a control terminal sensor detection device, and the control terminal sensor detection device The device includes a relay coil AB, a second voltage comparator IC2 and a third voltage comparator IC3; the control terminal sensor 40 detection device detects whether the relay coil AB is energized, and then judges whether the relay 10 is qualified through the signal output indication of the signal output circuit 50. The input terminal of optocoupler 80 is connected in series with the two ends of relay coil AB through the first resistor R1, the second resistor R2 to form the input loop of optocoupler 80; the level output terminal F of optocoupler 80 is connected with the third The comparison input terminal IN+pin IN+1 of the voltage c...

Embodiment 3

[0025] A relay, including a relay packaging case, and also includes the relay moving part detection circuit described in embodiment 1 or embodiment 2, the relay packaging case, relay coil, relay contacts, relay moving parts, and decision-making circuit are jointly arranged and connected into an integrated form finished relays.

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Abstract

The invention discloses a relay moving part detection circuit which is composed of a relay, a DC power supply voltage, a decision circuit, an action sensor and a signal output circuit. The decision circuit includes a moving part detection device. The moving part detection device includes an infrared sensor and a voltage comparator. The action sensor is a relay moving part. The output end of the decision circuit is electrically connected with the signal output circuit. The front stage of the decision circuit is electrically connected with the action sensor and the relay. The infrared sensor detects the position change of the relay moving part. The decision circuit and the action sensor are electrically connected with the DC power supply voltage. The decision circuit judges whether the contact of the relay is closed or not according to the detection of the position change of the relay moving part by the infrared sensor and the signal output indication of the signal output circuit. The position change state of the relay moving part can be detected. The position of the fault point of the control system can be judged in real time. The efficiency of circuit fault detection is improved.

Description

technical field [0001] The invention relates to a relay, in particular to a relay for detecting the state of a moving part of the relay. Background technique [0002] The relay is a commonly used electrical control device. It is an electrical appliance that causes the controlled quantity to undergo a predetermined step change in the electrical output circuit when the change of the input excitation quantity meets the specified requirements. It has the interactive relationship between the control system or input loop and the controlled system or output loop. Usually used in automatic control circuits, relays are often used in actual circuits as an "automatic switch" to control large current operations through small currents, and are widely used in many occasions, and play an automatic adjustment, safety role in the circuit Protection, conversion circuit, etc. Since the relay is an automatic switching element with isolation function, it is widely used in remote control, telem...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01H50/08G01R31/327
CPCG01R31/3278H01H50/08
Inventor 郭瀚成宋文荣杜德进
Owner ZHEJIANG YINGLUOHUA NEW ENERGY TECH CO LTD
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