Three-dimensional rotating angle measurement method and device adopted by same

A corner measurement and three-dimensional technology, applied in the direction of measuring devices, optical devices, instruments, etc., can solve the problems of difficult to improve measurement accuracy, and achieve the effect of convenient installation and operation, mature and reliable technology, and high measurement accuracy
CN104697472AActive Publication Date: 2015-06-10XI'AN INST OF OPTICS & FINE MECHANICS - CHINESE ACAD OF SCI
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
XI'AN INST OF OPTICS & FINE MECHANICS - CHINESE ACAD OF SCI
Publication Date
2015-06-10

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Abstract

The invention relates to a three-dimensional rotating angle measurement method and device adopted by the same. The three-dimensional rotating angle measurement device comprises a measurement device composed of two two-dimensional auto-collimators and a reflection part which is a cooperative target. During measurement, the first auto-collimator in the measurement device collimates the forward reflection face of the reflection part and measures the two-dimensional angle change amount of the forward reflection face of the reflection part according to an optical auto-collimation measurement principle. In the similar way, the second auto-collimator measures the two-dimensional angle change amount of the oblique reflection face of the reflection part. A data processing center of the three-dimensional measurement device can calculate three-dimensional rotating angle values according to a formula after receiving angle information, achieves the three-dimensional posture change amount of a measured object in space and has the advantages of being simple in achievement mode, mature and reliable in technology and convenient to install and operate.
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Description

Technical field

[0001] The invention belongs to the field of photoelectric measurement technology, and relates to a method and a device for realizing three-dimensional rotation angle measurement based on self-collimation measurement technology. Background technique

[0002] Objects have three degrees of freedom when rotating in space: pitch angle, yaw angle and roll angle. The pitch angle and yaw angle can be measured by conventional photoelectric measurement methods (such as autocollimator measurement) to achieve high precision of the roll angle. Measurement has always been a difficult problem in the field of precision measurement technology. At present, the measurement of roll angle at home and abroad mainly includes laser interferometry, polarized light measurement method, and measurement method based on image processing.

[0003] Laser interferometry realizes measurement by converting the change of roll angle into optical path difference. Although laser interferometry can achi...

Claims

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