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Microwave traffic detector design and implementation

Author: LuChi
Tutor: DingQingSheng
School: University of Electronic Science and Technology
Course: Signal and Information Processing
Keywords: Intelligent Transportation Systems Flow detection Radar Digital Signal Processing TMS320F2812
CLC: U495
Type: Master's thesis
Year: 2011
Downloads: 55
Quote: 0
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Abstract


As society , rapid economic development , traffic growth faster than the highways and other public transport facilities construction speed, thereby causing serious traffic congestion and congestion problems, so the establishment of intelligent transportation system becomes urgent needs of society . Microwave traffic detectors as an important source of traffic information collection used in intelligent transportation systems for intelligent transportation systems to provide accurate and reliable information. Based on a series of microwave traffic detector hardware and software research and development of high accuracy, good stability, traffic detectors , in order to meet the needs of intelligent transportation systems . Microwave traffic detectors for practical applications , the paper design of microwave traffic detectors and overall system configuration framework proposed overall system design , the completion of the digital signal processing board hardware, software design and implementation , and finally tested detector performance . From the experimental results , the test is basically reached the practical standards. Digital signal processing circuit board is to achieve detection algorithm based on the hardware and communication capabilities , and its design and implementation including DSP core circuits and peripheral circuits. This paper gives a hardware circuit overall program , and then were designed and implemented power and reset circuit , external expansion SRAM circuit , external expansion FLASH circuit , real-time clock circuit , communications interface circuits. Due to hardware circuit system functions , indicators, stability play an important role , so this article on digital signal processing circuit board also adopted anti-jamming measures . Digital signal processing board software system is to achieve detection algorithms and communication functions a core part of its design and implementation including chip -level driver and the top algorithms. This paper first gives the overall scheme of the software system , and then were designed and implemented analog signal conversion and acquisition module , spectrum extraction algorithm module , spectral analysis module, multi -path effects processing module, communication module. Finally, given the actual scene experimentally obtained test data and the analysis of the detected error . From the test data, microwave traffic detectors measure the accuracy of traffic basically reached the practical application needs.

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CLC: > Transportation > Road transport > Technical management of traffic engineering and road transport > Computer applications in road transport and highway projects
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