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A kind of detection method and device

A detection method and relay technology, which can be used in measuring devices, measuring electricity, measuring electrical variables, etc., can solve problems such as failure to detect relay damage

Active Publication Date: 2019-07-30
JIANGSU CONTEMPORARY AMPEREX TECHNOLOGY LIMITED
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] In view of this, the embodiment of the present invention provides a detection method and device to solve the problem in the prior art that the relay cannot be damaged when the relay is damaged

Method used

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  • A kind of detection method and device
  • A kind of detection method and device

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Experimental program
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Embodiment 1

[0074] The embodiment of the present invention provides a detection method, please refer to figure 1 , which is a schematic flow chart of the method provided by the embodiment of the present invention, such as figure 1 As shown, the method includes the following steps:

[0075] 101. Obtain the current resistance value of the relay.

[0076] Specifically, when the relay is damaged, the resistance value of the relay will be abnormal. Therefore, it is necessary to determine whether the relay is abnormal by obtaining the current resistance value of the relay.

[0077] Furthermore, when the relay works in a high-voltage environment, it will often be impacted by a large current or be in an overload state. At this time, due to the large current or overload between the contacts of the relay, unilateral contacts will appear. The phenomena of sticking, contact erosion, arcing and increased contact resistance.

[0078] For example, when the relay is in a high-current environment, due ...

Embodiment 2

[0092] The embodiment of the present invention provides a specific implementation for step 101, specifically as figure 2 As shown, the method includes the following steps:

[0093] 201. Detect the voltage value between the positive pole and the negative pole of the relay.

[0094] 202. Detect the current value of the current passing through the relay.

[0095] 203. Obtain a ratio of the voltage value to the current value as the resistance value.

[0096] Wherein, the current value and the voltage value are the current value and the voltage value at the same time, so as to ensure the accuracy of the obtained resistance value, thereby ensuring the accuracy of the result of judging whether the relay is damaged.

Embodiment 3

[0098] The embodiment of the present invention provides a specific implementation for step 201, specifically as image 3 As shown, the method includes the following steps:

[0099] 301. Collect a first voltage signal.

[0100] In a specific embodiment, if the relay works in a battery system, the positive pole of the battery is connected to the positive pole of the relay, and then the wire of the positive pole of the battery, the voltage of the positive pole and the current of the battery are derived from the negative pole of the relay, that is, the positive pole of the battery passes through the relay The negative pole of the battery is connected to the downstream equipment of the relay. Due to the resistance of the relay, the voltage of the positive pole of the battery will cause a voltage drop in the relay, which is the working voltage of the relay (belonging to low voltage), and forms a current through the relay. The operating current of the relay. When the voltage signal...

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Abstract

A detection method and device. The method comprises: acquiring the current resistance value of a relay (101); and determining, according to the resistance value, whether the relay is damaged (102). When a relay is damaged, the resistance value of the relay will be abnormal. According to this principle, the above solution of determining whether a relay is damaged by detecting the resistance value solves the problem in the prior art of being unable to detect a relay when the relay is damaged.

Description

[0001] 【Technical field】 [0002] The invention relates to the technical field of relay detection, in particular to a detection method and device. [0003] 【Background technique】 [0004] At present, relays are widely used in various industries, such as remote control, telemetry, communication, automatic control, mechatronics and power electronic equipment. The working environment of the relay is generally a high-voltage environment. Therefore, it is often impacted by a large current or is often in an overload state. At this time, the relay may be damaged. When the relay is damaged, the relay cannot work normally. For example: by the contact One side of the contact cannot be separated due to unilateral adhesion, so that the side of the relay is in a normally closed state; or, caused by contact ablation, the relay cannot be turned on when the relay is closed, making the relay lose its switching function, etc. However, there is no effective means for detecting whether the relay ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R31/327
CPCG01R31/3278
Inventor 李延长陈端雄
Owner JIANGSU CONTEMPORARY AMPEREX TECHNOLOGY LIMITED