Automatic detection device for double-row-graduated-line measuring instrument

Abstract

The invention discloses an automatic detection device for a double-row-graduated-line measuring instrument, which comprises an image collecting module, a light source illuminating module, an instrument positioning module, a measuring platform and a computer processing display module; the image collecting module comprises a CMOS (complementary metal oxide semiconductor) camera and a zoom lens; the light source illuminating module comprises two bar-shaped LED (light emitting diode) light sources which emit white light; the instrument positioning module comprises a guide rail, a left and a right slide blocks and a left and a right clamps; the computer processing display module comprises a display and a host and is connected with the image acquisition module through a data line; and the measuring platform is used for fixing the image collecting module, the light source illuminating module and the instrument positioning module through a fixing bracket and a sleeve. According to the device, automatic reading of instrument data can be realized; image data are transmitted into a computer through a USB (universal serial bus) interface; automatic computation, identification and display of a reading result can be realized through self-developed software; the hardware is simple in structure; and the software is convenient in operation.

Description

Technical field [0001] The present invention involves a measuring equipment reading device, especially a high -precision automatic verification device that can measure the measurement data with the characteristics of double -row engraving characteristics. Background technique [0002] With the rapid development of production and science and technology, the accuracy, efficiency and reading requirements of appliances are getting higher and higher, such as reducing artificial errors.At present, the domestic card ruler manufacturer's verification of the staller still uses an artificial method, that is, after zero, it is determined by the human eye to determine whether it is aimed at zero.The deck is a measuring device premium with a double -row engraving characteristics. There are a large number of engraving lines on the surface. When the number of traditional artificial reading is used, there is always the following disadvantages: there are subjective errors caused by individual dif...

AI Technical Summary

Problems solved by technology

The caliper is a measuring instrument with the characteristics of double rows of engraved lines. There are a large number of engraved lines on its surface. When the traditional manual reading is used for verification, there are always the following disadvantages: manual readings have subjective errors caused by individual differences; Limited misreading and misreading; during the verification, it is necessary to observe each caliper repeatedly, and reading for a long time will cause visual fatigue and reduce work efficiency

[0003] In order to solve the above problems, the applicant considered designing a set of automatic verification device for measuring instruments with double-row engraved lines, and used computer software to distinguish the readings after image collection for automatic reading verification judgment. The reading device needs to be considered in the design process as follows Several technical problems: 1. The appliance is made of alloy steel, and it is easy to produce strong specular emission when illuminated by ordinary light sources, which will affect the reading results

2. The double rows of engraved lines are not on the same horizontal plane, and it is easy to cause uneven gray scale when illuminated by ordinary light sources, which will affect the reading results

So far there is no report on the method of automatic reading of utensils with the feature of double row of lines

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