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Study on the Portable Self-Reading System of Universial Tools Microscope

Author: ChenZhiJun
Tutor: LinYuChi
School: Tianjin University
Course: Measuring Technology and Instruments
Keywords: Universal tool microscope Image Measurement Character Recognition Subpixel DSP Video Capture
CLC: TH742
Type: Master's thesis
Year: 2005
Downloads: 98
Quote: 3
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Abstract


Optical measuring instruments, such as the universal tool microscope (UTM), dividing first class, with a wide range of applications, high accuracy, good stability, widely used in the field of measurement. But the rapid development of modern science and technology, the digitization and intelligent precision measuring instruments also proposed increasing demands. Production in the past, is still a large number of traditional visual optical instruments are not suited to today's digital era, the urgent need to carry out digital transformation. Measurements reading automation, digitization and the structure of the premise of this transformation of the user, the best method is to not change the original instrument. In this paper, image measurement technology and digital signal processing technology, in-depth study of the universal tool microscope works on top of the basic structure of the upgrading of the automatic reading. The topics established a DSP as the core of a million workers were automatically identify the hardware platform readings, the development of the system software, storage, processing and transmission of video images can be achieved. The experimental results and practical application: This system is able to complete the task of image acquisition and processing, it has a small, low-power, low-cost, high processing speed, and also has a strong generic type, can be widely used instrument. measurement field. The main content of the thesis has the following three aspects: one million workers were the overall design of the automatic reading system. Including the working principle of the automatic reading system, automatic reading system image processing program, the selection of CCD and system mechanical and lighting. , DSP image processing system design. According to the issues that need to selected TMS320VC5410A of as the core processor, designed for million workers were automatically reading the identification of the hardware system area CCD video signal input, use CPLD acquisition control and data buffering, can effectively realize the image acquisition and processing functions. Three million workers were automatic the reading algorithm design and analysis. Million workers were spiral microscope field of view image characteristics, in-depth study of the processing technology, designed for million workers were automatically reading the image processing algorithm. Write a Matlab algorithm code language, image acquisition card and PC, carried out the automatic readings experiments, analysis of the accuracy of the current system and the proposed system improved. The experimental results show that this system is able to achieve the measurement accuracy of 2μm.

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CLC: > Industrial Technology > Machinery and Instrument Industry > Instruments, meters > Optical instruments > Microscope
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