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Design of Photoelectric Conversion and Data Acquisition System Based on USB2.0

Author: LiuZhiJiang
Tutor: YangKeCheng
School: Huazhong University of Science and Technology
Course: Optical Engineering
Keywords: Photoelectric conversion Data acquisition USB2.0 CY7C68013
CLC: TP274.2
Type: Master's thesis
Year: 2011
Downloads: 45
Quote: 0
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Abstract


With the continuous improvement of the level of science and technology , research and production process in order to detect and acquisition target photoelectric signal of higher frequency , the performance of the photodetector and the data acquisition rate requirements getting higher and higher . Been unable to meet the needs of the research and production of traditional photoelectric detection system because the response rate is low , the transmission rate is low and installation inconvenience . Well the emergence of a new generation of high-speed PIN photodiode and USB2.0 technology to solve these problems . The research and design a set of high-speed photoelectric conversion and data acquisition system based on USB2.0 . For the completion of the indoor white communication signals ( low frequency range 0 - 10MHz , the purpose of the photoelectric detection of the high - frequency range of 100MHz-1GHz) , and data acquisition , this paper under the guidance of the system design performance of overall system design for analysis , by comparison photoelectric conversion device (S5973 BPX65 ) , the A / D conversion module (MAX115) and USB2.0 interface module (CY7C68013-128AC) core device selection. Specific system hardware and software design work , the subject of high-speed photoelectric conversion and signal processing module hardware design and simulation , and analysis of the operational amplifier of the noise characteristics of the circuit , the voltage conversion rate and other parameters ; completion of the USB 2.0 high-speed data acquisition module hardware design and circuit board production; Keil C51 and GPIF Designer software for programming and debugging , DDK development Kit and the Microsoft Visual C 6.0 software to write the data acquisition system based on USB2.0 data acquisition module firmware drivers and user applications. Photoelectric conversion and acquisition system design verification whether the actual requirements of this thesis, the software and hardware FBI system measured . The test results show that , the system can be completed within the range of 10MHz-1.5GHz white communication signal detection USB2.0 data acquisition module can enter 1-4 ± target signal within 5V , the maximum sampling rate of 12 A / D converter 400KSPS, system transmission rate of up to 1MB/s-20MB/s, frequency photoelectric signal of the photoelectric conversion and data collection and transmission functions , stable and reliable work to achieve the research and development of a set of high frequency response , transmission speed , the system the purpose of the photoelectric conversion characteristics of high integration and data acquisition system .

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CLC: > Industrial Technology > Automation technology,computer technology > Automation technology and equipment > Automation systems > Data processing, data processing system > Data collection and processing systems
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