Laser tracking measurement system and method

Abstract

The invention discloses a laser tracking measurement system and method. The laser tracking measurement system comprises a laser, a spectroscope, a first galvanometer, a second galvanometer, a positiondetector and a tracking control module, wherein laser light generated by the laser is emitted to the first galvanometer through the spectroscope, is reflected by the first galvanometer, is emitted tothe second galvanometer, is reflected by the second galvanometer and is emitted to a detection target; laser beams reflected by the detection target sequentially pass through the second galvanometer,the first galvanometer and the spectroscope and are reflected to the position detector; and the tracking control module is used for acquiring angle information of the first galvanometer and the second galvanometer and position information in the position detector, and sending out a galvanometer deflection angle control signal to control the first galvanometer and the second galvanometer to be deflected for enabling the laser light to be emitted to the detection target subjected to position change, so that dynamic real-time tracking of the detection target is achieved. The system has the advantages of being real-time in detection, high in accuracy, high in precision, miniaturized and low in cost.

Description

technical field [0001] The disclosure belongs to the technical field of laser precision measurement, and relates to a laser tracking measurement system and method. Background technique [0002] The laser tracking measurement system is a large-scale space measurement instrument, combined with high-precision laser distance measurement, precise angle measurement and tracking control technologies, it can perform spatial position tracking measurement of space objects and rapid surface measurement of planes / curved surfaces. With the advantages of no guide rail, fast dynamic measurement, high measurement accuracy, large measurement range, and convenient installation and movement, it is an important means of large-scale industrial measurement and scientific measurement. The laser tracking measurement system mainly includes a high-precision laser ranging unit, a two-dimensional precision turntable, a two-dimensional precision angle measurement mechanism, a tracking control data proce...

AI Technical Summary

Problems solved by technology

[0003] The existing laser tracking measurement system mainly uses laser interferometer as the precision ranging unit, uses a two-dimensional turntable with U-shaped frame structure as the tracking mechanism, and uses two circular grating encoders as the precision angle measuring unit. The shortcomings of large size and high implementation cost limit the wide application of laser tracking measurement systems

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