Method and device for measuring curved surface

A technology of measuring device and measuring method, applied in the direction of measuring device, optical device, instrument, etc., can solve the problems of high cost, unclear image, unable to form projection pattern, etc., and achieve the effect of low equipment cost and high measurement efficiency

Inactive Publication Date: 2009-01-28
翟泳通
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Compared with cables, the equipment and control of special light sources are more complicated and costly
On the other hand, although the fringe pattern projected by the special light source on the measured object is similar to the shape of the cable, due to physical and optical reasons, the dense fringe projected pattern on the surface of the measured object will cause interference, intensity Unequal reflections

Method used

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  • Method and device for measuring curved surface
  • Method and device for measuring curved surface
  • Method and device for measuring curved surface

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Embodiment Construction

[0029] See figure 1 and figure 2 , The curved surface measuring device of the present invention includes a cable 1 and a camera 3, the cable 1 is tightly stretched on the surface of the object 2 to be measured, and coincides with the contour curve of the object 2 to be measured. The photographing device 3 is installed at the lower front of the cable 1 to facilitate the clear and complete picture of the cable 1. The cable 1 and the camera 3 must be strictly positioned in the measuring device to ensure the accuracy of the light path, and the color of the cable 1 must be significantly different from the measured object 2 to facilitate further processing by the computer.

[0030] The measuring method using the above measuring device includes the following steps:

[0031] Step 1: Determine the parameter set of the measuring equipment;

[0032] Step 2: Tighten the cable 1 on the surface of the measured object 2;

[0033] Step 3: Take a photo of cable 1 and input the image into the com...

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Abstract

The invention relates to a curved surface measuring device and a measuring method thereof. The measuring device comprises a lanyard and a camera device, wherein, the lanyard is tightly stretched on the surface of an object to be measured and coincides with the profile curve of the object to be measured; the measuring method includes the following steps: step one, a parameter set of the measuring device is determined; step two, the lanyard is tightly stretched on the surface of the object to be measured; step three, a picture of the lanyard is taken and the image is input into a computer; step four, the image of the lanyard is analyzed and curvilinear coordinate data of the centerline of the lanyard are calculated; and step five, the centerline of the lanyard is processed by equidistant offset calculation towards one side of the object to be measured while the offset amount is equal to the semidiameter of the lanyard and then a curve is obtained, namely the profile curve of the corresponding position of the object to be measured. By utilizing a certain amount of the lanyards, the curved surface data of the object to be measured is obtained.

Description

【Technical Field】 [0001] The invention relates to a mechanical optical measuring device and method, in particular to a curved surface measuring device and a measuring method. 【Background technique】 [0002] In some special occasions, it is necessary to measure the irregular curved surface of human body parts or other objects, such as the curved surface shape of the sole of the human body under weight. However, due to the irregularity of these curved surface shapes, it is difficult to directly measure. [0003] A traditional measurement method is the contact measurement method, which mainly uses servo control to move the measuring head along the surface of the object to be measured, and obtain the trajectory coordinates through the servo system to determine the shape of the object surface. However, the measurement equipment of this measurement method is relatively expensive and the measurement efficiency is low, which is not conducive to large-scale use. [0004] Another tradition...

Claims

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Application Information

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IPC IPC(8): G01B11/24
CPCG01B11/24
Inventor 翟泳通
Owner 翟泳通
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