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

Digital imaging-based multi-beam displacement measurement method

A technology of digital imaging and displacement measurement, applied in the direction of measuring devices, optical devices, instruments, etc., can solve the problems of high precision and large range, and achieve the effect that the measurement accuracy will not be reduced

Inactive Publication Date: 2013-08-07
XIDIAN UNIV
View PDF4 Cites 11 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to overcome the problem of incompatibility of high precision and large range in the prior art, and to provide a multi-beam displacement measurement method of an image sensor with high measurement accuracy

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
  • Digital imaging-based multi-beam displacement measurement method
  • Digital imaging-based multi-beam displacement measurement method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] Such as figure 1 As shown, it includes a fixed digital imaging unit 1 and a moving measured object 2. A laser emitter is installed on the measured object 2. In the illustration, three lasers are installed on the measured object 2. There is no limitation in actual use. For the three lasers, the first light beam 3 , the second light beam 4 and the third light beam 5 are respectively emitted by the three lasers or the beam splitting device. The linear displacement direction of the measured target body 2 is parallel to the sensor plane of the digital imaging unit 1; a straight line 6 is drawn on the surface of the digital imaging unit 1 and parallel to the displacement direction of the measured target body; search along the straight line 6 of the digital imaging unit 1 sensor plane three dots o 1 , o 2 and o 3 ; Among them, point o 1 and o 2 They are respectively located at both ends of the sensor of digital imaging unit 1; point o 1 and dot o 2 The distance is the l...

Embodiment 2

[0021] Such as figure 2 As shown, it includes a fixed digital imaging unit 1 and a moving target body 2. A laser emitter is installed on the target body 2. In the figure, a laser emitter is installed on the target body 2, and a laser emitter It is divided into three beams by the beam splitter, and the three beams are respectively coded by the encoder, and the first beam 3, the second beam 4, and the third beam 5 are respectively sent out by the beam splitter. The linear displacement direction of the measured target body 2 is parallel to the sensor plane of the digital imaging unit 1; a straight line 6 is drawn on the surface of the digital imaging unit 1 and parallel to the displacement direction of the measured target body; search along the straight line 6 of the digital imaging unit 1 sensor plane three dots o 1 , o 2 and o 3 ; Among them, point o 1 and o 2 Located at both ends of the digital imaging unit 1 sensor; point o 1 and dot o 2 The distance is the length L o...

Embodiment 3

[0024] According to the above principle, when n lasers are installed on the measured object, the test range of the system displacement is n*L.

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 relates to a digital imaging-based multi-beam displacement measurement method. In the method, a fixed digital imaging unit and a movable measured target body are involved; a laser transmitter is arranged on the measured target body; and the linear displacement direction of the measured target body is parallel to the plane of a digital imaging unit sensor. The method comprises the following steps of drawing a straight line on the surface of the digital imaging unit, wherein the straight line is parallel to the displacement direction of the measured target body; searching three points o1, o2 and o3 in the straight line along the plane of the digital imaging unit sensor, wherein the point o1 and the point o2 are respectively positioned at the two ends of the digital imaging unit sensor, the distance between the point o1 and the point o2 is the length L of the digital imaging unit sensor, the point o3 is positioned in the extension straight line of the point o1 and the point o2, and the distance between the point o3 and the point o2 is L; when the measured target body moves in the direction parallel with the straight line, transmitting light beams with different codes in the direction of the fixed digital imaging unit at different angles by using the laser transmitter of the measured target body; and determining the displacement of the measured target body by using the digital imaging unit according to the light beams with different codes projected at the position of the digital imaging unit. The digital imaging-based multi-beam displacement measurement method is high in measurement precision.

Description

technical field [0001] The invention relates to object linear displacement measurement, in particular to a multi-beam displacement measurement method based on digital imaging. technical background [0002] Accurately obtaining the displacement data of an object is of vital practical significance to various fields such as modern civil, industrial, and even military. CCD or cmos digital imaging has many advantages such as small size, light weight, low power consumption, stable geometric structure, accurate light measurement, etc., and is especially suitable for the measurement of the position and displacement of objects. However, the size and area of ​​CCD or cmos are usually small, and it is difficult to directly meet the measurement occasions with large displacement. The classic CCD or cmos displacement measurement adopts the scheme of reducing the displacement measurement accuracy in exchange for a larger measurement range. Contents of the invention [0003] The purpose...

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): G01B11/02
Inventor 詹劲松孙璐王家礼周春阳王玉栋董绍锋
Owner XIDIAN UNIV