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Non-contact image measuring system

An image measurement, non-contact technology, used in measurement devices, instruments, optical devices, etc., to achieve high efficiency, ensure the reliability of focusing, and high precision

Inactive Publication Date: 2010-09-22
CHONGQING JIANSHE IND GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the deficiencies in the prior art, the present invention provides a non-contact measuring system with strong applicability, high efficiency and high precision, which effectively solves the problem of measuring complex workpieces

Method used

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Embodiment Construction

[0019] The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments.

[0020] figure 1 It is a structural schematic diagram of the present invention. As shown in the figure, a non-contact image measurement system includes a three-dimensional workbench, an image measurement device, a laser ranging device, a grating data acquisition device and a motion control device. The three-dimensional workbench includes a worktable 1, a Y-axis guide rail 2 set on the worktable 1, an X-axis guide rail 3 parallel to the top of the worktable 1 and can slide along the vertical direction of the Y-axis guide rail 2, and a Z-axis guide perpendicular to the working plane. 4. The image measurement device includes an image acquisition card and a camera 5 that is arranged at the bottom of the Z-axis guide rail 4 and can move up and down along the Z-axis guide rail 4. The lens 7 of the camera 5 is vertically corresponding to the...

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Abstract

The invention discloses a non-contact image measuring system, which comprises a worktable, a three-dimensionally movable camera, a laser displacement sensor and a triaxial grating bar and grating data acquisition card, wherein the camera and the laser sensor are connected with a Z-axis guide rail via a connection beam and vertically correspond to the worktable; and a servo motor can drive a slide block to move so as to enable the camera to vertically move up and down. The invention acquires images in the XY plane via the camera for plane survey, the height of each positioning point near the measured pixel is measured via the laser displacement sensor in the Z direction to work out the average value, and the distance of the camera needing to be moved when being focused is determined according to the average value, so the system can simply and quickly detect complex workpieces, increases the measurement efficiency, expands the scope of measurement and meets the measurement requirements on the images.

Description

technical field [0001] The invention relates to a measurement system for detecting workpiece tolerances, in particular to a non-contact image measurement system. Background technique [0002] Image measurement technology is a modern measurement technology based on modern optics, combined with computer image graphics, machine vision, information processing, optoelectronics and pattern recognition. It has the characteristics of non-contact, strong adaptability, fast, efficient, and accurate, and has been more and more widely used in the field of precision measurement. [0003] In batch workpiece inspection, the traditional image inspection method requires manual point measurement, and the detection efficiency is low. In recent years, a lot of research has been done on image measurement technology at home and abroad. Most of the existing automatic measurement technologies are based on the automatic identification of primitive features. On the one hand, this method requires ar...

Claims

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Application Information

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IPC IPC(8): G01B11/24G01B11/03G01B11/00
Inventor 刘学明罗钧张平付丽陈建端罗友鸿李锐宋信玉
Owner CHONGQING JIANSHE IND GRP
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