Eureka AIR delivers breakthrough ideas for toughest innovation challenges, trusted by R&D personnel around the world.

Calibration method of standard cylinder curved surface point measurement equipment

A technology of measuring equipment and calibration method, which is used in measuring devices, image data processing, instruments, etc.

Active Publication Date: 2021-01-29
WUHAN INSTITUTE OF TECHNOLOGY
View PDF6 Cites 7 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is to provide a calibration method for standard cylinder surface point measurement equipment, which is used to solve the problem of accurately obtaining the relative positional relationship between the distance sensor and the fixed reference sphere when there are manufacturing and assembly errors

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
  • Calibration method of standard cylinder curved surface point measurement equipment
  • Calibration method of standard cylinder curved surface point measurement equipment
  • Calibration method of standard cylinder curved surface point measurement equipment

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0103] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0104] see figure 2 , the embodiment of the present invention adopts HyperScan three-dimensional tracking measuring instrument 1, reference ball 3 and distance sensor 2 as combined equipment for measuring the point on the standard cylinder; wherein three-dimensional tracking measuring instrument 1 is used as a pose tracking device to track the reference ball in real time 3 and the pose data of the assembly of the distance sensor 2.

[0105] see figure 1 , a calibration method of a standard cylindrical surface point measuring device of the present invention, comprising the following steps:

[0106] S1: Arrange the testing equipment and standard cylinder: place the three-dimensional tracking measuring instrument 1 in a suitable position, fix and connect the distance sensor 2 and the reference ball 3, fix the standard cylinder to be t...

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 a calibration method of standard cylinder curved surface point measurement equipment, which includes: based on pose tracking and distance measurement, measuring a point on the upper surface of a cylinder under the condition that the pose of a reference ball and distance sensor assembly is not changed, and performing point measurement by moving a large angle along the side surface of the cylinder; enabling the measuring points to respectively fit a plane and a circumference, and calculating an optical axis direction U of the distance sensor under a reference spherical coordinate system TaCS and a coordinate Q of a coordinate system TCS original point of the distance sensor in the coordinate system TaCS, so that a subsequent calibration calculation process is simpler;the problem that the relative position relation between the distance sensor and the calibration reference ball is accurately obtained when manufacturing and assembling errors exist is solved. According to the invention, the standard cylinder with low price is adopted to acquire the position of the positioning device and the distance of the distance sensor, thereby saving the calibration cost; theassembly size relation of the two sensors is accurately calculated, the universality is enough, and the factory machining efficiency is improved.

Description

technical field [0001] The invention belongs to the technical field of space point precision measurement, and in particular relates to a calibration method of a standard cylinder curved surface point measurement device. Background technique [0002] Modern processing tends to be large-scale integration and high automation, and the shape of products is more diverse, which has higher requirements for the accuracy and automation of measuring equipment. [0003] Traditional measurement techniques are mainly divided into contact measurement and non-contact measurement. In contact measurement, three-coordinate measuring machines are widely used, mainly through direct contact between the measuring element and the surface to be measured to obtain measurement data, but there are disadvantages such as slow measurement speed, low measurement data density, easy wear of the probe, and easy damage to the surface of the workpiece. Non-contact measurement mostly uses machine vision technol...

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): G06T7/80G06T7/73G01B11/24G01B11/00
CPCG06T7/80G06T7/73G01B11/002G01B11/24G06T2207/10028
Inventor 黄昆涛张成宇颜昌亚李振瀚张子龙
Owner WUHAN INSTITUTE OF TECHNOLOGY
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Eureka Blog
Learn More
PatSnap group products