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Optical fiber type synchronous tunable vibration measurement system

A technology for measuring system and surface vibration, applied in measuring devices, measuring ultrasonic/sonic/infrasonic waves, instruments, etc., can solve the problem that the vibration correlation and phase information of different points cannot be reflected, and solve the problem of synchronous measurement of complex shapes , meet the needs of synchronous measurement, good environmental adaptability and the effect of measurement accuracy

Active Publication Date: 2014-11-05
BEIJING CHANGCHENG INST OF METROLOGY & MEASUREMENT AVIATION IND CORP OF CHINA
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Problems solved by technology

[0003] The purpose of the present invention is to solve the problem that the existing scanning vibration measurement method cannot reflect the correlation and phase information of vibration between different points, and propose a fiber-optic synchronous and tunable surface vibration measurement system

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  • Optical fiber type synchronous tunable vibration measurement system
  • Optical fiber type synchronous tunable vibration measurement system

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Embodiment 1

[0023] The fiber-optic synchronously tunable surface vibration measurement system of the present invention, such as figure 1 As shown, the measurement object is the surface vibration parameter. The system consists of a controllable fiber laser source array and a control module 1, an optical frequency modulation module 2, an optical interference module 3, a bundled light synchronous tuning control module 4, and an interference signal demodulation module 5 , composed of 6 control and information output modules;

[0024] The fiber-optic synchronous tunable surface vibration measurement system defines the direction of the measuring light as the Z-axis direction, and the plane perpendicular to the direction of the measuring light as the X- and Y-axis planes, which together form a space Cartesian coordinate system;

[0025] The optical frequency modulation unit adopts the acousto-optic modulation technology to superimpose the modulated optical frequency on the reference optical freq...

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Abstract

The invention relates to an optical fiber type synchronous tunable vibration measurement system and belongs to the technical field of precise measurement of face vibration parameters. The optical fiber type synchronous tunable vibration measurement system consists of a controllable optical fiber type laser source array and control module, an optical frequency modulation unit, an optical interference unit, a concentrated light beam synchronous tuning control unit, an interference signal demodulation module and a control and information output unit. The measurement system adopts an optical fiber bundle as a measurement light source, utilizes the principle of heterodyne interference and adopts the concentrated light beam synchronous tuning control unit to achieve synchronous tunable measurement of face vibration through beam splitting and beam concentration. The optical fiber type synchronous tunable vibration measurement system adopts a concentrated light beam and face vibration beam splitting measurement structure, so that the measurement system is compact, convenient and easy to operate and control, achieves quick synchronous accurate measurement and evaluation of face vibration and has good application and popularization value.

Description

technical field [0001] The invention relates to a fiber-optic synchronously tunable surface vibration measurement system, which belongs to the technical field of synchronous precision measurement of surface vibration parameters. Background technique [0002] Vibration measurement focuses on the motion state of the surface of the object. Since most objects in engineering applications are not ideal rigid bodies, single-point vibration or several-point vibration cannot fully describe its vibration form. The technical requirements for synchronous measurement of the surface vibration parameters of the object surface are proposed. , in order to provide more comprehensive and systematic information conditions for the relevant fatigue, life, damage, fault diagnosis, etc. At present, the scanning vibration measurement method is widely used, and the correlation and phase information of vibration between different points cannot be reflected. Therefore, the development of synchronous su...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01H9/00
Inventor 朱振宇梁志国张力李强吴娅辉
Owner BEIJING CHANGCHENG INST OF METROLOGY & MEASUREMENT AVIATION IND CORP OF CHINA
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