Gear vibration mode detection system and detection method

A detection system and detection method technology, which are used in measurement devices, measurement of ultrasonic/sonic/infrasonic waves, instruments, etc., to achieve the effects of fast response speed, high measurement accuracy and long transmission distance

Pending Publication Date: 2020-04-07
BEIJING NORTH VEHICLE GROUP CORP +1
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Problems solved by technology

[0005] The present invention proposes a gear vibration shape detection system and detection method based on fiber grating strain detection to solve the technical problem of how to accurately detect the gear vibration shape

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  • Gear vibration mode detection system and detection method

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Embodiment Construction

[0023] In order to make the purpose, content and advantages of the present invention clearer, the specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0024] This embodiment proposes a gear vibration detection system based on fiber grating strain detection, which consists of figure 1 As shown, it mainly includes an ASE broadband light source 1 , a fiber optic circulator 2 , a fiber Bragg grating strain sensor 3 , a photoelectric detection unit and an electrical processing unit 8 . Among them, the ASE broadband light source 1 is connected with the A end of the optical fiber circulator 2, the B end of the optical fiber circulator 2 is connected with the fiber grating strain sensor 3; the C end of the optical fiber circulator 2 is connected with the photoelectric detection unit, and the photoelectric detection unit is connected with the electric The processing unit 8 is ...

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Abstract

The invention provides a gear vibration mode detection system and method based on fiber bragg grating strain detection. The detection system comprises an ASE broadband light source, an optical fiber circulator, a fiber bragg grating strain sensor, a photoelectric detection unit and an electric processing unit. According to the invention, the fiber bragg grating strain sensor is utilized to measurethe surface strain change of the gear disc in a working state, the strain change is converted into fiber bragg grating central wavelength change, and then photoelectric conversion and signal processing are carried out on an optical signal to realize detection of a strain signal. The method is mainly used for detecting the vibration mode of the gear disc, has the advantages of high sensitivity, high response speed, wide response frequency band, long transmission distance, strong anti-electromagnetic interference capability, high measurement precision, low hardware cost, high operation speed and the like, and can effectively and accurately detect the modal vibration mode of the gear disc.

Description

technical field [0001] The invention belongs to the technical field of optical fiber grating detection, and in particular relates to a gear vibration detection system and detection method based on optical fiber grating strain detection. Background technique [0002] As a special fiber optic sensor, the fiber grating sensor not only has the advantages of ordinary fiber optic sensors but also has many other characteristics. It is a wavelength modulation sensor that obtains the measured physical information by detecting the change value of the central wavelength of light. Therefore, there is no need to worry about the impact of fiber bending loss on light intensity, nor will it affect the flexible overlapping of optical paths. Compared with traditional electrical sensors, fiber grating sensors have good chemical properties, corrosion resistance, and anti-electromagnetic interference. Therefore, fiber grating sensing technology has been widely used in bridge and road structure...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01H9/00G01B11/16
CPCG01H9/004G01B11/165
Inventor 杜勤祁金秋李克雷王森温志强李宁宋静魏鹏井雅军闫晓红马佳金立艳王钊张晶莹武盼张国振毕京红
Owner BEIJING NORTH VEHICLE GROUP CORP
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