Laser scannning and tracking instrument with six feedom measurement function

A laser scanning and tracker technology, applied in the direction of electromagnetic radiation induction, etc., can solve the problems of inability to achieve measurement, inability to achieve spatial point distance measurement, and inability to carry a point aiming probe.

Inactive Publication Date: 2002-08-07
TIANJIN UNIV
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Problems solved by technology

However, the direct application of the above-mentioned three-dimensional measuring device cannot realize the determination of the coordinate orientation of the tracked object (such as the measurement of the azimuth angle of the central axis of the hole, the measurement of the center distance between the holes, etc.), nor can it realize the distance measurement between the space points (such as aiming and measuring the distance between the intersection of two spatial crosshairs, etc.)
The reason is that the function of the corner cube is

Method used

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  • Laser scannning and tracking instrument with six feedom measurement function
  • Laser scannning and tracking instrument with six feedom measurement function
  • Laser scannning and tracking instrument with six feedom measurement function

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Embodiment Construction

[0017] The principle of the present invention and the process of implementing the measurement are described in conjunction with the accompanying drawings.

[0018] In the axial plane rotating mechanism carrying the corner cube, the center line of the rotating arm 6 can be accurately positioned at the three positions (OA, OB, OC) of the positioning support plate 7 by the elastic steel ball and the cone socket pair. Therefore, the angle The coordinates of the center of the corner mirror light target at three positions (points A, B, and C in the figure) can be measured and determined on a three-coordinate measuring machine. Let the rotation center O of the axial plane rotation mechanism be the origin of the coordinates, and A(x a 'y a 'z a ’), B(x b 'y b 'z b ’), C(x c 'y c 'z c ’) The coordinate values ​​of the three points constitute the coordinate system of the “three-degree-of-freedom coordinate orientation measurement target” as the reference point. When the coordin...

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Abstract

The laser scan tracker with six-freedom measurement function comprises double-frequency laser interferometer, two-D position sensitive detection device, spectroscope, two-D rotation plane mirror and coordinate bearing measuring target. Its coordinate bearing measuring target comdprises main shaft, axial plane rotating mechsniam in upper end of the main shaft and equipped with corner cube, main shaft circumagitating mechanism positioned in middle portion of main shaft and equipped with photoelectric measuring head or hollow tetrahedron measuring head and positioing mechanism which is positioned in lower end of main shaft and is composed of measuring bar and contact ball. The outer end of rotation arm is equipped with corner cube, said rotation is controlled by positioing plate.

Description

technical field [0001] The invention relates to a laser scanning tracker with a six-degree-of-freedom measurement function. It belongs to the innovative technology of laser scanning tracker. Background technique [0002] The existing three-dimensional laser scanning tracker is a high-precision (±20ppm during dynamic measurement), high-resolution (distance measurement accuracy is 0.1μm, angle measurement accuracy is 0.25arc-sec.), large range (25m), Intelligent dynamic measuring instrument, its working principle is as follows: figure 1 shown. The measurement beam emitted by the HP dual-frequency laser interferometer 1 is incident on the two-dimensional rotating plane mirror 4 through the beam splitter 3, and the parallel beam reflected by the plane mirror 4 hits the center of the corner cube 5 and is reflected back to the The beam splitter 3 irradiates the returned beam onto the two-dimensional position sensitive detection device (PSD) 2 . When...

Claims

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Application Information

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IPC IPC(8): G06K7/10
Inventor 王宝光
Owner TIANJIN UNIV
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