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The Development of the Remote Transmissivity Measuring System of Plume Penetrated by Laser

Author: FanHui
Tutor: ZengYanAn
School: Huazhong University of Science and Technology
Course: Optical Engineering
Keywords: Transmittance Embedded Systems Web server Driver
CLC: TP274.5
Type: Master's thesis
Year: 2007
Downloads: 59
Quote: 1
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Abstract


Smoke transmittance measurements in atmospheric transmittance detection , material and structural analysis on the industrial and agricultural production has a wide range of applications . With the growing popularity of computers , the Internet ( the Internet ) has become a part of people's daily lives . With Internet access has become the development direction of many embedded applications using microprocessors . Smoke transmittance measurement system and the Internet combined with smoke transmittance measurement is more practical and flexible . Users via the Internet browser on the transmittance measurement system based on the embedded Web server for remote configuration and access , Web content to report sampling data , work status , smoke transmittance measurement system of remote monitoring . Embedded systems to take full advantage of the high integration, good reliability, maintenance-free characteristics , improve industrial adaptability of the system greatly reduces the cost of industrial production ; same time, meet the field station , unattended applications requirements , greatly improving the work efficiency ; while the use of open TCP / IP network communication protocol , any computer can use the generic network browser software to access the device does not require a dedicated computer and specialized software . The main work of this paper is the the laser smoke transmittance measurement system based on ARM9 hardware and software design . First analyzes the smoke transmittance measurement principle , as according to the design of the laser driver and the modulation circuit , the photovoltaic cell IV conversion circuit , a filter circuit , an integrating circuit , and a computer interface circuit to achieve a laser aerosol transmittance remote measurement system hardware. Hardware design based on further information on the embedded Web server network protocols and programming techniques , and the combination of the Socket programming techniques and multi-threaded programming technology embedded Web server . In the full understanding of the hardware structure of the S3C2410 based on the Linux system ADC driver . Eventual realization of a the laser smoke transmittance remote measurement system . Test the system under different conditions , the test results show that the system meets the design requirements .

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CLC: > Industrial Technology > Automation technology,computer technology > Automation technology and equipment > Automation systems > Data processing, data processing system > Automatic detection system using a variety of new technologies
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