Space geometry automatic measurement method based on laser ranging

Abstract

The invention discloses a space geometry automatic measurement method based on laser ranging. The method mainly relates to an omnibearing rotation holder, a laser ranging module, an attitude sensor, arotation driving device, a camera and a control center. The rotation driving device can drive the holder to rotate in all directions and drive the laser ranging module to rotate so as to establish aspatial three-dimensional coordinate system, and spatial coordinate positioning can be achieved on feature points (points capable of reconstructing a spatial geometric figure) of the spatial geometricfigure to be measured in combination with measured attitude parameters and distance parameters; then detailed parameters can be calculated through spatial geometric operation, and actual measurementrequirements are met; the control center enables laser spots to automatically and sequentially coincide with the feature points of the to-be-measured figure through feedback control of the camera, andthen automatic dotting measurement is achieved. Through the above mode, convenient, rapid, automatic and safe measurement of various geometric parameters in a complex environment, a dangerous environment or a special environment which cannot be reached directly and the like can be realized.

Description

technical field [0001] The invention relates to the field of measurement of spatial geometric parameters (distance, area, volume, etc.), especially the measurement method and device in special environments such as complex environments, dangerous environments, or inaccessible environments. Background technique [0002] Due to the good characteristics of laser energy focusing, electromagnetic wave reflection, and high coherence, laser technology has begun to be used in some distance or length measurements at home and abroad. Two common measurement principles are the pulse method and the phase method. Compared with the pulse method, the phase method has a longer measurement time and higher accuracy. According to the phase method of laser ranging, the measurement accuracy of the existing laser ranging modules in the market has reached 1mm. At present, representative laser ranging products on the market include handheld laser rangefinders and telescope rangefinders, with a range...

AI Technical Summary

Problems solved by technology

Both have good ranging effects, but there are also some deficiencies worth improving

[0004] First, the above-mentioned instruments mainly measure the distance from the instrument to the target point, and cannot directly measure the geometric parameters (distance, area, volume, etc.) between multiple target points that the operator cannot reach, and are greatly restricted by the environment

Second, the above-mentioned instruments are mainly aimed at the measurement of one-dimensional distances, and can simply measure the area of ​​a rectangle and the volume of a cube, but cannot complete the measurement of two-dimensional and three-dimensional spatial parameters (area and volume) of other shapes

Third, due to the hand-held operation during measurement, the above-mentioned instruments have large accidental errors

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