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High-precision six-degree-of-freedom measurement method and device based on laser range finder

A technology for a laser rangefinder and a measuring device, which is applied in the direction of measuring devices, optical devices, instruments, etc., can solve the problems of complex structure and low measurement accuracy, and achieve the effects of simple and compact structure, high precision and simple structure.

Pending Publication Date: 2021-06-25
INST OF OPTICS & ELECTRONICS - CHINESE ACAD OF SCI
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Problems solved by technology

[0004] Aiming at the shortcomings of complex structure and low measurement accuracy in the existing precision measurement technology, the present invention designs a high-precision six-degree-of-freedom measurement method and device based on a laser rangefinder, which has high precision, simple structure, non-contact measurement, etc. Advantages

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  • High-precision six-degree-of-freedom measurement method and device based on laser range finder

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Embodiment Construction

[0016] The present invention will be further described below in conjunction with specific embodiments and accompanying drawings.

[0017] combine first figure 1 A high-precision six-degree-of-freedom measuring device based on a laser rangefinder is introduced. The main components of the measuring device include a high-precision laser range finder, six external reflection cube mirrors 1, a static coordinate plate 2, a moving coordinate plate 3, and a data processing system 4; among them, the high-precision laser interferometric range finder in the measuring device includes a laser Interferometer host 5, control software, six laser output ends 6 and six optical fibers 7; the six laser output ends 6 are respectively fixed on the edge of the static coordinate plate through six adjustable mirror frames 8, and connected to the laser through six optical fibers 7 The interferometer host 5 is connected; the six external reflection cube mirrors 1 are fixed on the edge of the moving coo...

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Abstract

The invention provides a high-precision six-degree-of-freedom measurement method and device based on a laser range finder, and solves the problem of simultaneous measurement of six degrees of freedom of movement of an object along an X direction, a Y direction and a Z direction and rotation around an X axis, a Y axis and a Z axis in a space rectangular coordinate system. The device comprises a high-precision laser interference range finder, an external reflection pyramid mirror, a static coordinate flat plate, a movable coordinate flat plate and a data processing system. The laser interference range finder and the external reflection pyramid mirror are used to measure six distances from six points on the movable coordinate flat plate to six corresponding points on the static coordinate flat plate, and then a position coordinate resolving method provided by the invention is used to resolve the variation of the movable coordinate flat plate moving along the X direction, the Y direction and the Z direction and rotating around the X axis, the Y axis and the Z axis for six degrees of freedom. The method has the characteristics of high precision and simple structure.

Description

technical field [0001] The invention belongs to the field of precision optical measurement, and in particular relates to a high-precision six-degree-of-freedom measurement method and device based on a laser range finder. Background technique [0002] Modern precision measurement technology is a comprehensive interdisciplinary subject integrating optics, electricity and computer, and it is developing towards high precision, high sensitivity, integration and intelligence. Common measurement parameters in scientific research and practical engineering applications are displacement and angle, etc. For example, the position and attitude of a rigid object in free space has six degrees of freedom of motion, specifically including moving along the X direction, Y direction, and Z direction and Rotate six degrees of freedom information around the X-axis, Y-axis, and Z-axis, and the high-precision measurement methods for six degrees of freedom are not yet mature. The high-precision mea...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01B11/00G01B11/14
CPCG01B11/002G01B11/14
Inventor 石恒杨卓汪利华杜俊峰边疆雷柏平
Owner INST OF OPTICS & ELECTRONICS - CHINESE ACAD OF SCI
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