A laser Doppler online vibration measurement system and method
A laser Doppler and Doppler technology, applied in the direction of measuring devices, measuring ultrasonic/sonic/infrasonic waves, instruments, etc., can solve problems that restrict the popularization and application of Doppler laser vibration measurement technology, difficult production line product detection, etc.
Inactive Publication Date: 2019-03-12
FOSHAN UNIVERSITY
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Problems solved by technology
[0004] However, in terms of product vibration measurement, the vibration and noise detection of batch products on the production line is not only a continuous process that is repeated at a certain rhythm, but also requires that the testing equipment can automatically adjust the best testing position according to the vibration and noise characteristics of each product, and detect in real time. , Judging and distinguishing whether the tested product is qualified, because the existing ordinary Doppler laser vibrometer does not have all the functions required for product testing, it is difficult to be directly used for product testing on the production line, which restricts the Doppler laser vibrometer Promotion and application of technology in large-scale production sites
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[0031] The preferred embodiments of the present invention will be described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described here are only used to illustrate and explain the present invention, and are not intended to limit the present invention.
[0032] Such as Figures 1 to 5 As shown, a laser Doppler online vibration measurement system according to the present invention includes a laser dynamic vibration measurement unit, an auxiliary vibration measurement probe, a vibration isolation detection station, and a workpiece entry and exit actuator.
[0033] The laser dynamic vibration measurement unit includes auxiliary components and core components for laser dynamic measurement. The auxiliary components are equipped with a high-speed visual six-dimensional dynamic measurement module, and the core component is equipped with a Doppler dynamic measurement laser head 1, forming a multi-channel, multi-point, multi-...
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The invention relates to a laser Doppler online vibration testing system and method. The system comprises a laser dynamic vibration testing unit, an auxiliary vibration testing probe, a vibration isolated detection station and a workpiece output / input mechanism. The optimal test position can be adjusted to automatically according to vibration noise characteristics of each product, whether the tested product is qualified can be detected, determined and distinguished in real time, the system and method can be directly applied to detecting products in a production line, and a Doppler laser vibration test technology can be popularized and applied to scaled production sites.
Description
technical field [0001] The invention relates to an online vibration measurement system and method, in particular to a laser Doppler online vibration measurement system and method. Background technique [0002] Digital laser vibration measurement technology based on Doppler effect is widely used in non-contact testing of vibration characteristics of electromechanical and power devices, as well as collection, comparison and analysis of stress and strain data and maps, including engines, automobiles, vehicles, household appliances, etc. Electromechanical products and vibration-related research, design tests, and quality inspection and evaluation of finished products. [0003] The existing portable Doppler laser vibrometer integrates advanced optical measurement technology and digital signal processing. It is easy to use and is suitable for individual testing of the tested samples and samples in a stand-alone experimental environment, providing accurate testing data for the res...
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IPC IPC(8): G01H9/00
CPCG01H9/00
Inventor 王宇华程湘谭海曙
Owner FOSHAN UNIVERSITY