Vibration measurement system for eliminating vibration influence of laser vibration meter base point

Abstract

The invention discloses a vibration measurement system for eliminating the vibration influence of laser vibration meter base points, and the system comprises two laser vibration meters, a symmetric reflection box, a signal amplifier, a data collector, and a processor, wherein the symmetric reflection box consists of six reflectors and a rigid reflection plate. According to the invention, a more accurate measurement mode can be provided for vibration measurement; forward and reverse tracking of the same target point is carried out through the two laser vibration meters at the same position andthe corresponding optical elements; the influence of vibration of a base point of the laser vibration meter can be eliminated, an absolute vibration signal of a measured object is obtained, and the defect that the vibration influence of the laser vibration meter caused by field vibration cannot be eliminated in a traditional direct measurement mode of the laser vibration meter is overcome.

Description

Technical field [0001] The invention belongs to the technical field of laser vibration measurement, in particular to a vibration measurement system that eliminates the influence of the vibration of the fundamental point of a laser vibrometer. Background technique [0002] Vibration and noise often bring a lot of trouble to people's lives. In the machinery industry or construction industry, excessive vibration can even bring safety hazards. Therefore, the measurement and analysis of vibration is particularly important for the study of object vibration. The traditional contact measurement method is to arrange a number of sensors on the measured object, and through the close contact between the sensor and the measured object, the vibration signal of the measured object is collected and analyzed. However, the contact measurement method also has some disadvantages. For example, the installation requirements are high, the sensor must be firmly fixed on the object to be measured, and so...

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Problems solved by technology

[0004] The purpose of the present invention is to solve the problems existing in the prior art, to provide a vibration measurement system that eliminates the influence of the vibration of the base point of the laser vibrometer, which overcomes the defects of limited range and high layout requirements of the traditional contact measurement method, and at the same time overcomes the shortcomings of using The laser vibrometer cannot rule out the defect of measurement error caused by the vibration of the laser vibrometer itself caused by the vibration of the site

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