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Sensing device for detecting electro-vibration of electric appliance

A sensing device and detection sensor technology, applied in the direction of using electrical devices, measuring devices, using electromagnetic means, etc., can solve the problems that the detection results are easily affected by people's emotions, the detection accuracy is not high, and only qualitative detection is possible. Achieve the effect of enhancing the ability to resist environmental vibration and environmental noise interference, light weight and high accuracy

Active Publication Date: 2017-06-23
INST OF ELECTRONICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of the above-mentioned technical problems, the present invention provides a sensing device for detecting electrical vibrations of electrical appliances, to overcome the existing vibration detection devices that are easily disturbed by ambient noise and environmental vibrations, and have low detection accuracy and low reliability. Inferior disadvantages and the original manual detection method requires personnel training, only qualitative detection, low detection efficiency, detection results are easily affected by people's emotions, etc.

Method used

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  • Sensing device for detecting electro-vibration of electric appliance
  • Sensing device for detecting electro-vibration of electric appliance
  • Sensing device for detecting electro-vibration of electric appliance

Examples

Experimental program
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no. 1 example

[0041] In a first exemplary embodiment of the present invention, a sensing device for detecting electro-induced vibration of an electrical appliance is provided. figure 1 It is a schematic diagram of the structure of the sensing device used to detect electrical vibration of electrical appliances according to the first embodiment of the present invention, please refer to figure 1 , a sensing device for detecting electro-induced vibration of electrical appliances, comprising: a sleeve 1, a vibration conducting rod 2, a spring 3, an acoustic sensor 4a, and an isolation chamber 5.

[0042] The acoustic sensor 4a is fixed in the isolation chamber 5, and its acoustic surface faces the through hole at the front end of the isolation chamber 5. The rear end of the vibration conducting rod 2 is inserted into the isolation chamber 5 from the through hole and stays in front of the acoustic sensor 4a, vibrating The conduction rod 2 is fixedly connected with the isolation chamber 5 . The i...

no. 2 example

[0048] In a second exemplary embodiment of the present invention, a sensing device for detecting electro-induced vibration of an electrical appliance is provided. image 3 It is a schematic structural diagram of a sensing device for detecting electric vibration of electrical appliances according to the second embodiment of the present invention, as image 3 As shown, compared with the sensor device used to detect electrical vibration in the first embodiment, the difference of the sensor device in this embodiment is that the spring 3 is arranged in the sleeve 1 and is set on the isolation chamber 5, and the spring One end of 3 abuts on the protrusion at the front end of isolation chamber 5, and the other end abuts on the rear end of sleeve 1.

[0049] Figure 4 It is a schematic diagram of the sensing device in the working state in the second embodiment of the present invention.

[0050] In order to achieve the purpose of brief description, any descriptions of technical featu...

no. 3 example

[0053] In a third exemplary embodiment of the present invention, a sensing device for detecting electro-induced vibration of an electrical appliance is provided. Figure 5 It is a schematic structural diagram of a sensing device for detecting electric vibration of electrical appliances according to the third embodiment of the present invention, as Figure 5 As shown, compared with the sensing device for detecting electrical vibration of electrical appliances in the first embodiment, the difference of the sensing device in this embodiment is:

[0054] It also includes an acoustic waveguide 6, the acoustic sensor 4a is fixed in the isolation chamber 5, and its acoustic surface faces the through hole at the front end of the isolation chamber 5, one end of the acoustic waveguide 6 is docked with the through hole, and the other end is connected to the vibration conducting rod 2. At the rear end, the signal processing chip 8 is electrically connected to the acoustic sensor 4a.

[0...

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PUM

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Abstract

The invention provides a sensing device for detecting electro-vibration of an electric appliance. The sensor comprises an isolated chamber, a detection sensor, a vibration transmitting rod, a sleeve and a spring, wherein the detection sensor is arranged in the isolated chamber, the vibration transmitting rod transmits an electro-vibration signal to the detection sensor, the front end of the vibration transmitting rod extends out of the front end of the sleeve, and the spring is arranged in the sleeve and used to realize reciprocal motion of the vibration transmitting rod. The sensing device is small and light, highly resistant to environmental vibration and environmental noise interference, high in detecting accuracy and efficiency and repeatability, capable of detecting weak electro-vibration signals of the electric appliance as well as vibration characteristics of a narrow area in the electric appliance, and suitable for detecting the electro-vibration of the electric appliance online in manufacture and operation processes of the electric appliance; and thus, whether a working state of the electric appliance is normal is detected.

Description

technical field [0001] The invention relates to the technical field of vibration detection, in particular to a sensing device for detecting electrical vibration of electrical appliances. Background technique [0002] Electrical appliances usually vibrate and cause noise when they are powered on. This vibration is called electro-induced vibration of electrical appliances. It is a key parameter that reflects the quality of electrical appliances and their working status. Before leaving the factory, many electrical appliances have to undergo vibration testing in the energized state to judge whether their quality is qualified and whether the vibration noise meets the specified noise standards. Electro-induced vibration detection has become the main means of quality control in the electrical production process. The environment of the electrical appliance production workshop is complex, and there are various vibration sources and noise sources. These environmental vibrations and e...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01H9/00G01H11/06G01H11/02
CPCG01H9/00G01H11/02G01H11/06
Inventor 祁志美高然程进逯丹凤
Owner INST OF ELECTRONICS CHINESE ACAD OF SCI
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