Method of length detection and system thereof

A detection system and length value technology, applied in the detection field, can solve problems such as expensive investment, and achieve the effects of reducing production costs, reasonable structure, and low environmental requirements

Inactive Publication Date: 2010-03-31
BYD CO LTD
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

Even if the CCD chip is 1 / 4 inch, a 4000*1000 CCD camera (if it exists) is a big investment

Method used

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  • Method of length detection and system thereof
  • Method of length detection and system thereof
  • Method of length detection and system thereof

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Embodiment Construction

[0024] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0025] Such as figure 1 As shown, the implementation process of the length detection method provided by the embodiment of the present invention includes:

[0026] In step S101, a detection system with an image acquisition device is provided.

[0027] Such as figure 2 Shown is the image acquisition device used in the embodiment of the present invention. The image acquisition device 100 includes a camera 10 and a camera 20 that respectively place the two ends of the sample or the product to be tested in the field of view in order to obtain a clear image of the two ends of the sample or the produc...

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Abstract

The invention relates to the detection field and provides a method of length detection and a system thereof; the method comprises the following steps: a detection system which is provided with an image acquisition device is provided; the detection system is calibrated; images at two ends of a product to be detected are respectively acquired, and image processing is carried out; the length of the product to be detected is detected. In the invention, a high-pixel camera with high price is replaced by at least two low-pixel cameras, the production cost is reduced, the structure is rational, the operation is simple, the environmental requirements are low, the measuring precision is high by effective processing of image parameters, accurate length value of the product to be detected can be obtained, the error is reduced and the detection result is objective.

Description

technical field [0001] The invention is applicable to the detection field, and in particular relates to a method and system for product length detection. Background technique [0002] With the development of science and technology, the detection accuracy of product length is getting higher and higher. For high-precision length detection, there are generally two methods used: [0003] One is to use high-precision measuring tools, such as vernier calipers, micrometers, etc.: but generally they can only be used for manual operation, cannot be programmed and controlled, and are not easy to make into automated equipment, which is difficult to achieve in mass testing. Moreover, for products to be tested of different sizes, multiple sets of measuring tools may be required, which is not flexible enough. This detection method is not only difficult to guarantee the measurement accuracy, but also the operation steps are relatively cumbersome, and the environmental factors in the detec...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01B11/02
Inventor 聂辉陈肖涛
Owner BYD CO LTD
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