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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

Active Publication Date: 2015-06-10
XI'AN INST OF OPTICS & FINE MECHANICS - CHINESE ACAD OF SCI
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Problems solved by technology

Although this method is relatively easy to implement, the resolution of the image sensor used by the camera is the bottleneck that limits its measurement accuracy, and it is difficult to improve the measurement accuracy

Method used

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

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Embodiment Construction

[0032] The present invention performs measurement based on the detection principle of the autocollimator. The three-dimensional rotation angle measuring device includes a measuring device body composed of two two-dimensional autocollimators and a reflective component 2 (ie, a cooperative target). During the measurement, the first autocollimator 7 in the measuring device is aimed at the specular reflection surface 11 of the reflecting part, and the two-dimensional angle change of the specular reflection surface of the reflecting part is measured by the optical self-collimation measurement principle; in the same way, the second autocollimation The straight meter 10 measures the two-dimensional angle change of the inclined reflecting surface 12 of the reflecting part. After the data processing center of the three-dimensional measuring device receives the angle information, the angle value of the three-dimensional turning angle can be calculated according to the formula, and the thr...

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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.

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...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01B11/26
Inventor 杨东来白建明胡晓东于芳苏赵小东孙国燕
Owner XI'AN INST OF OPTICS & FINE MECHANICS - CHINESE ACAD OF SCI
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