| 热释电红外传感器应用与车流量检测系统 |
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| 引用本文： | 王捷,艾红.热释电红外传感器应用与车流量检测系统[J].自动化仪表,2010,31(3):72-74,78. |
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| 作者姓名： | 王捷 艾红 |
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| 作者单位： | 1. 北方工业大学自动化及现场总线北京市重点实验室,北京,100144
2. 北京信息科技大学自动化学院,北京,100192 |
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| 摘 要： | 在道路交通管理过程中，车流量是决定控制策略的关键因素之一。利用热释电红外传感器，设计了车流量自动计数检测系统。该红外检测系统采用红外传感器作为探头来检测外界是否有车辆通过，红外传感器输出的微弱电信号经运算放大器放大以及比较器电路滤除干扰后，由单片机进行脉冲序列的分析，从而完成对车流量的检测。整个系统成本低，在未来应用中将有很大的发展空间。
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| 关 键 词： | 检测 放大电路 热释电 红外传感器 车流量 计数 |
Application of Pyroelectric Infrared Sensor and Monitoring System for Flow Rate of Vehicles |
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| Wang Jie,Ai Hong.Application of Pyroelectric Infrared Sensor and Monitoring System for Flow Rate of Vehicles[J].Process Automation Instrumentation,2010,31(3):72-74,78. |
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| Authors: | Wang Jie Ai Hong |
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| Abstract: | In traffic control,the flow rate of vehicles is one of the critical factors to decide the control strategy.By using pyroelectric infrared sensors,the automatic counting and detecting system for flow rate of vehicles has been designed.In this detecting system,the pyroelectric infrared sensors are used to detect if any vehicle is passing,the weak signal output of the sensor is amplified through the operation amplifier;and interference is filtered out by the comparer.Finally,the pulse sequence analysis is cond... |
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| Keywords: | Detection Amplifying circuit Pyroelectric Infrared sensor Flow rate of vehicles Count |
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