Unlock instant, AI-driven research and patent intelligence for your innovation.

External calibration target suitable for optical measurement system and application method of external calibration target

An optical measurement system and target technology, applied in the field of external calibration targets, can solve the problems of poor target installation accuracy and difficult identification, and achieve the effects of convenient system use, novel design, and easy popularization and use.

Inactive Publication Date: 2017-06-13
CHINA ELECTRONIC TECH GRP CORP NO 38 RES INST
View PDF2 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the defects in the prior art that the target installation accuracy is poor and it is not easy to be recognized by the optical measurement system, and to provide an external standard calibration target suitable for the optical measurement system to solve the above problems

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • External calibration target suitable for optical measurement system and application method of external calibration target
  • External calibration target suitable for optical measurement system and application method of external calibration target
  • External calibration target suitable for optical measurement system and application method of external calibration target

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Such as figure 1 , figure 2 , image 3 As shown, an external standard calibration target suitable for an optical measurement system includes a target base 1; the base 1 provided in this embodiment is a square plate-shaped structure, and cone dimples are arranged on the four corners of the target base 1 2. The four cones 2 are symmetrical to the positioning holes in the marked diagram, the opening of the cones 2 is 90°, and the target ball 4 of the laser tracker is placed in the cones 2 . There is also a mark on the base 1 image 3 , Positioning hole 5 in the marking diagram; marking image 3 It is set in the center of the target base body 1, with the positioning hole 5 of the logo as the central positioning point. Mounting holes 6 are evenly distributed on each edge of the base body 1 for mounting and fixing the target.

Embodiment 2

[0027] A method for using an external standard calibration target suitable for an optical measurement system, comprising the following steps:

[0028] Use precision instruments to accurately measure the coordinate values ​​x1, y1, z1, x2, y2, z2, x3, y3, z3 and x4, y4, z4 of the center points A1, A2, A3, and A4 of each cone on the target, and then according to the following The spatial coordinate values ​​(x, y, z) of the center point of the marked image on the target are calculated by the formula:

[0029] x=(x1+x2+x3+x4) / 4

[0030] y=(y1+y2+y3+y4) / 4

[0031] z=(z1+z2+z3+z4) / 4

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention provides an external calibration target suitable for an optical measurement system and an application method of the external calibration target. The external calibration target comprises a target substrate, wherein the target substrate is provided with conical pits, a marking graph and a marking graph locating hole; the marking graph is arranged at the center of the target substrate and the marking graph locating hole is taken as a center locating point; laser tracker target spheres are put into the conical pits; and installation holes are uniformly distributed in all edges of the substrate for installing and fixing the target. Compared with the prior art, the external calibration target can be more accurately arranged on tested equipment; and when the external calibration target is used, coordinate values of center points of all conical pits in the target can be accurately measured and then a space coordinate of the center point of the marking graph on the target is calculated and obtained, so that the identification accuracy is high. The external calibration target is novel in design, convenient to use by the system and convenient to popularize and use.

Description

technical field [0001] The invention relates to an image target for calibration of an optical system, in particular to a target for calibration of an external standard suitable for an optical measurement system and a use method thereof. Background technique [0002] With the improvement of technology and equipment manufacturing capabilities, equipment with large planes or large curved surfaces has developed rapidly, such as large aircraft, aircraft carriers, and large phased array radars. The physical deformation of these large flat and large curved surface equipment under external conditions such as wind resistance and sea waves inevitably affects the equipment design. In order to measure the deformation of large-area equipment under external load conditions, analyze the force of the equipment, provide experimental data support for equipment design, and optimize the design. An optical measurement system - a full-view high-precision three-dimensional measuring instrument us...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): G01B11/00
CPCG01B11/005
Inventor 何文杰邓友银王晨晨
Owner CHINA ELECTRONIC TECH GRP CORP NO 38 RES INST