Non-contact diameter measuring instrument based on LED light source

A LED light source, non-contact technology, applied in the direction of instruments, measuring devices, optical devices, etc., can solve the problems of optical diameter measuring devices that cannot be widely promoted and used, high cost, large volume, etc.

Inactive Publication Date: 2018-07-24
王威立
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The above-mentioned devices all have the problems of large size and high cost, which prevent the optical diameter measuring device from being widely promoted and used.

Method used

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Embodiment Construction

[0017] 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.

[0018] Such as figure 1 As shown, the non-contact caliper with LED light source includes a collimator 1, a linear array CCD sensor 3, a digital image processing system 5 and a display system 6, wherein the parallel light emitted by the collimator 1 irradiates the measured object 2, the parallel light is finally projected onto the linear CCD sensor 3, and the parallel light emitted by the collimator 1 is perpendicular to the linear CCD sensor 3; the internal structure principle of the collimator 1 is as follows figure 2 As shown, the collimator 1 is composed of an LED light source 7, a plano-conve...

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Abstract

The invention provides a measuring device for detecting the diameter, thickness and other information of an object in a non-contact manner based on an LED light source. A diameter measuring instrumentis composed of an LED light source parallel light tube, a linear array CCD sensor and an image processing system. A measured object is placed between the LED light source parallel light tube and thelinear array CCD sensor for non-contact measurement. An LED (Light Emitting Diode) produces parallel light after passing through a series of optical lenses and small holes, and the parallel light hitsthe measured object and is finally projected to the linear array CCD sensor. The linear array CCD sensor converts an optical signal into an electrical signal. The digital image processing system processes the electrical signal, and displays the processing result through a display system.

Description

technical field [0001] The invention provides a measuring device for non-contact detection of information such as the diameter and thickness of an object based on an LED light source. Background technique [0002] The mechanical detectors used in the early days generally compare the measured object with standard measuring instruments to obtain the measurement results. This method is more intuitive, but the measurement accuracy is relatively low. Most mechanical measuring instruments are contact measurement, which has the advantages of simple and convenient measurement operation, low manufacturing cost, and wide measurement range; the disadvantage is that the measured object will be damaged to a certain extent during the measurement, flexible and elastic objects cannot be measured, and it cannot be realized Dynamic measurement, low measurement efficiency. Commonly used mechanical micrometers include vernier calipers, micrometers, etc. [0003] The measurement principle of t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01B11/08
CPCG01B11/08
Inventor 王威立栗文雁李春杰李达王晓雷蒋志强
Owner 王威立
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