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Relay pull-in effect detection device and method

A detection device and relay technology, applied in circuit breaker testing and other directions, can solve the problems of low detection efficiency, inaccurate testing, and inability to perform real-time detection, and achieve the effect of real-time detection.

Inactive Publication Date: 2018-03-13
四川大能科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In the prior art, the pull-in effect of the relay cannot be routinely detected. Usually, it can only be judged by hearing or using a secondary pull-in voltage test, that is, a DC power supply is used to slowly apply voltage to the relay coil from zero. When the electromagnetic After the relay pulls in, read the pull-in voltage at that time and compare the pull-in voltage with the first pull-in voltage for analysis and judgment, so as to judge the pull-in effect
[0005] Although these two detection methods for the pull-in effect of relays can be used to detect the pull-in effect of relays, they have the following disadvantages: (1) The two methods can only be applied in the actual production process, but they are used in actual electrical equipment, communication and power electronic equipment. In the process, the suction effect cannot be detected by using these two methods
(2) For the secondary pull-in voltage test, it is necessary to manually change the voltage slowly and watch the display all the time, so the detection efficiency is low
When adjusting the voltage, the test is inaccurate due to the different speed of turning the knob
(3) It is impossible to detect the real-time pull-in effect of the electromagnetic relay when it is working, that is, it is impossible to perform real-time detection

Method used

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  • Relay pull-in effect detection device and method

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no. 1 example

[0034] see figure 1 , This embodiment provides a relay pull-in effect detection device 10 for real-time detection of the pull-in effect of the relay 20 . The relay pull-in effect detection device 10 provided in this embodiment has the characteristics of simple structure, convenient use and accurate detection. In addition, it can also detect the pull-in effect of the relay 20 in real time.

[0035] The relay pull-in effect detection device 10 provided in this embodiment includes a sampling unit 100 , a processing unit 200 and a display unit 300 . The sampling unit 100 is electrically connected to the processing unit 200 , and the processing unit 200 is electrically connected to the display unit 300 . The sampling unit 100 is used for electrically connecting with the relay 20 , and the sampling unit 100 is used for detecting the voltage difference between the two static contacts of the relay 20 and transmitting the voltage difference to the processing unit 200 . The processing...

no. 2 example

[0049] see Figure 5, this embodiment provides a method for detecting the pull-in effect of the relay 20, which is used to detect the pull-in effect of the relay 20, and the device 10 for detecting the pull-in effect of the relay is used. The relay pull-in effect detection device 10 includes a sampling unit 100 , a processing unit 200 and a display unit 300 , the sampling unit 100 is electrically connected to the processing unit 200 , and the processing unit 200 is electrically connected to the display unit 300 . The sampling unit 100 is used for electrical connection with the relay 20 , and the sampling unit 100 is used for detecting the voltage difference between two static contacts of the relay 20 and transmitting the voltage difference to the processing unit 200 . The processing unit 200 is used to calculate the contact resistance between the two static contacts of the relay 20 according to the voltage difference and obtain the pull-in information representing the pull-in ...

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Abstract

The present invention discloses a relay pull-in effect detection device and method, and relates to the field of relay pull-in effect detection technology. The present invention provides a relay pull-in effect detection device. The device comprises a sampling unit, a processing unit and a display unit. The sampling unit is electrically connected with the processing unit, and the processing unit iselectrically connected with the display unit. The sampling unit is configured to be electrically connected with a relay, detect a voltage difference between two stationary contacts of the relay and transmit the voltage difference to the processing unit. The processing unit is configured to calculate contact resistance between the two stationary contacts of the relay and transmit pull-in information to the display unit. The present invention further provides a relay pull-in effect detection method implemented by employing the relay pull-in effect detection device. The relay pull-in effect detection device and method provided by the invention are convenient to use and accurate to detect, and can perform real-time detection of the pull-in effect of the relay.

Description

technical field [0001] The invention relates to the technical field of relay pull-in effect detection, in particular to a relay pull-in effect detection device and method. Background technique [0002] This section is intended to provide a background or context for the embodiments of the invention that are recited in the claims and detailed description. The descriptions herein are not admitted to be prior art by inclusion in this section. [0003] With the rapid development of industrial automation in recent years, more and more electrical equipment has entered people's lives. As an automatic switching element with IN / OUT isolation function, relay is widely used in communication, mechatronics, remote control and power electronic equipment. When the electromagnetic relay is in use, when the coil current, the coil generates a magnetic field, and the iron core of the coil is magnetized to generate a magnetic force, so that the armature is attracted to the iron core under the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/327
CPCG01R31/327
Inventor 侯乐川
Owner 四川大能科技有限公司