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

High-speed vision measurement method

A visual measurement, high-speed technology, applied in the field of visual measurement, can solve problems such as optimization, impact on measurement accuracy, imaging position offset, etc., achieve the effect of improving accuracy, ensuring measurement accuracy and measurement efficiency, and avoiding position deviation

Inactive Publication Date: 2019-04-16
TZTEK TECH
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the high-speed movement, during the camera exposure process, the object under test moves relatively, which causes the real imaging position to shift (P1), thus affecting the measurement accuracy
[0004] At present, the most commonly used visual measurement method, after the positioning is completed, the camera takes picture measurement or takes picture measurement during operation, which cannot guarantee the best measurement accuracy and measurement efficiency at the same time.

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
  • High-speed vision measurement method
  • High-speed vision measurement method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0015] A method for high-speed visual measurement, see figure 2 : After the electronic control system outputs the trigger signal, when the timer reaches half of the exposure time, the actual platform grating feedback value is latched and recorded as the actual measurement position feedback, and combined with the final exposure image through the calibration file, the final measurement structure is obtained .

[0016] The specific operation process is as follows. Send the coordinate value of the measurement position to the electronic control system, and then start the operation. The electronic control system controls the motion platform to move at high speed with the object under test. The electronic control system reads the feedback position of the grating scale on the platform in real time, and communicates with the The set position of each measurement point is compared. When the actual position feedback value of the platform is equal to the set value, that is, when the measu...

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 high-speed vision measurement method. Trigger shooting of a camera is carried out according to the actual position of a motion platform during high-speed motion. Real-time position capture and latching are carried out according to the exposure time of the camera to ensure vision measurement accuracy and improve measurement effectiveness. After an electronic control systemoutputs a trigger signal and a timer reaches half of the exposure time, the actual platform raster feedback value is latched and recorded as actual measurement position feedback, and is combined withthe final exposure image to realize fusion through a calibration file to acquire a measurement structure finally.

Description

technical field [0001] The invention relates to the technical field of visual measurement, in particular to a high-speed visual measurement method. Background technique [0002] For visual measurement, it is necessary to move the measured object or the camera to the specified position. After the movement is completed, the camera and the measured object are relatively still, and start to take pictures. After the software acquires the image, it performs calculations to obtain the measurement result. When taking a picture, the camera and the measured object do not move relative to each other, and the measurement accuracy is high, but each measurement needs to wait for the movement to be completed, so the measurement efficiency is relatively low. [0003] In order to improve the measurement efficiency, in the prior art, during the movement of the measured object or the camera, the camera is triggered externally to take pictures, see figure 1 , when the actual platform reaches t...

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): G01C11/02G01C11/04
CPCG01C11/02G01C11/04
Inventor 邱澍丰
Owner TZTEK TECH