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Full-automatic microhardness measuring system

A microhardness and measurement system technology, which is applied in the direction of measuring devices, test material hardness, instruments, etc., can solve the problems of low stability and repeatability of measurement results, cumbersome operation process, and low measurement efficiency. To achieve the effect of overcoming errors, simplifying the process and improving efficiency

Inactive Publication Date: 2008-03-19
FUDAN UNIV
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AI Technical Summary

Problems solved by technology

[0008] Most of the existing microhardness measurement systems use manual operation, the operation process is cumbersome and complicated, and the measurement efficiency is low
Moreover, to locate the edge and diagonal of the indentation by naked eyes and subjective experience, the accuracy of measurement, the stability and repeatability of measurement results are not high

Method used

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  • Full-automatic microhardness measuring system
  • Full-automatic microhardness measuring system

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Embodiment Construction

[0028] The automatic microhardness measurement system is mainly composed of microhardness tester, CCD camera, USB image acquisition card, computer, printer, X-Y electric table and special computer software, as shown in Figure 1.

[0029] 1. Hardware part

[0030] The microhardness measuring instrument uses Winbond's W78E365 single-chip microcomputer as the core control part, the turret motor and the pressing motor both use the ULN2004 drive chip, the storage chip uses the AT24C16 with the I2C interface, the real-time clock chip uses the DS1302, and the RS-232 interface uses the MAX232 chip. The bus buffer chip mainly uses a three-state latch 74HC573, and the orthogonal signal output by the grating encoder uses a D flip-flop CD401 3 to separate forward and reverse pulse signals. YF62L. W78E365 drives the turret motor to switch between different objective lenses (10x, 40x) and indenters, controls the loading and unloading of the indenter motor, and keeps the load according to t...

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Abstract

The invention provides a full automatic micro hardness measuring system, which belongs to the automatic analyzing and measuring technical field. The full automatic micro hardness measuring system bases on a computer digital image processing technology, and comprises a micro hardness measuring apparatus, a CCD camera, a USB image sampling card, a computer, a printer, an X-Y electric bench and proprietary software which is executed in the computer, etc. The computer controls the optical zooming, the setting of time loading and the automatic loading of the micro hardness measuring apparatus and the running fixing of the X-Y electric bench through a RS-232 communication interface, receives an indentation image in the micro hardness measuring apparatus through a USB interface, and adopts an image processing technology, to automatically achieve the positioning of the indentation edge, the measuring of the distance of the diagonal line, the calculating of the micro hardness value and the creating and printing of the report form. The invention has the advantages that the full automatic unmanned operation is achieved indeed during the whole micro hardness measuring process, and the measuring efficiency, the measuring accuracy and the stability are greatly increased.

Description

technical field [0001] The invention belongs to the technical field of automatic analysis and measurement in industrial automatic control, and in particular relates to a fully automatic microhardness measurement system. Background technique [0002] The main function of the microhardness measurement system is to measure the microhardness parameters of the workpiece, which is widely used in machinery manufacturing, metallurgy, building materials, chemical industry and other fields. [0003] The Vickers microhardness tester is a kind of hardness tester that is widely used at present. The tester adopts a small load and observes the indentation through a microscope to calculate the microhardness of the test material. It is especially suitable for small and thin materials. Material samples, as well as nitriding, carburizing, spraying surface treatment specimens and surface microhardness testing of various coatings. Vickers microhardness is not affected by the test force, and the...

Claims

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Application Information

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IPC IPC(8): G01N3/40G01N13/00
Inventor 倪欢商慧亮李锋
Owner FUDAN UNIV
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