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Transient micro-vibration measurement device and method based on prism refracting signal amplification

A technology of signal amplification and prism refraction, applied in measuring devices, using wave/particle radiation, measuring ultrasonic/sonic/infrasonic waves, etc. It is convenient for high-precision real-time dynamic capture and measurement, with simple structure and precise measurement effect.

Inactive Publication Date: 2016-09-21
DALIAN UNIV OF TECH +1
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Problems solved by technology

[0004] The present invention is a transient micro-vibration measurement device based on prism refraction signal amplification, which overcomes the problem that existing displacement meters and other devices are not conducive to fast and high-precision capture and measurement of low-amplitude micro-vibration signals

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  • Transient micro-vibration measurement device and method based on prism refracting signal amplification

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Embodiment Construction

[0018] The specific embodiments of the present invention will be described in detail below in conjunction with the technical solutions and accompanying drawings.

[0019] As shown in the figure, a photosensitive belt 7 is arranged on the upper surface and the center of the right side of the enclosed space 1 of the measurement device to receive refracted light signals and output light source signals, which are collected by a photosensitive data acquisition instrument 8 . The fixed rod 3 passes through the axis of the prism 4 to fix the prism in the confined space of the measuring device, ensuring that the prism only rotates around the central axis without translation, ensuring that the contact between the fixed rod and the prism is smooth, and reducing measurement errors. The two ends are fixed on the front and back of the closed space of the measuring device. Wherein the prismatic length of the triangular prism is m=2mm, and the vertical distance between the axis center of the...

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Abstract

The present invention discloses a transient micro-vibration measurement device and method based on prism refracting signal amplification. According to the device, a photosensitive belt is fixed on the internal part upper side and right side center positions of a measurement device closed space, the edge of the photosensitive belt is connected to a photosensitive data acquisition device. A fixed rod goes through a prism axis to fix a prism to the measurement device closed space, and a control position inclines to a monochromatic light emitter. The monochromatic light emitter is fixed to a measurement device closed space side. An object contact rod (6) goes through the lower part of the measurement device closed space, one end is fixed to the prism, and the other end is connected to a precision instrument to be measured. Through converting micro-vibration line displacement into the change of a light refraction angle, from the change of the refraction angle to the large amplitude movement of a refraction light spot, the export of a transient micro-vibration line displacement and signal amplification are realized. Through the photoelectric effect of the photosensitive belt, the high speed and high precision capturing and recording of a light spot position signal can be realized, and the displacement of the micro-vibration line displacement is obtained through back calculation. The measurement is reliable, and the data analysis is simple.

Description

technical field [0001] The invention belongs to the technical field of dynamic micro-vibration monitoring of fine parts in mechanical engineering, electronic engineering and civil engineering, and relates to a method of using the rotation angle of a triangular prism to cause a large deflection of refracted light, amplifying the amount of linear displacement and micro-vibration movement, and inverting the movement amount of the refracted light spot Transient microvibration measuring device and its design method. Background technique [0002] Caused by environmental vibration, there are problems of micro-vibration monitoring and control in the fields of machinery, electronics, and civil engineering. On the one hand, micro-vibrations will have adverse consequences on production or human comfort. For example, in high-speed, high-precision drilling processes, it is necessary to strictly control the impact of micro-vibrations on the precision of the manufacturing process; on the o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01H9/00
CPCG01H9/00
Inventor 李建波谢宜静邵宇林皋胡志强
Owner DALIAN UNIV OF TECH
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