| 各向异性磁阻传感器在车辆探测中的应用 |
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| 引用本文： | 李希胜,于广华.各向异性磁阻传感器在车辆探测中的应用[J].北京科技大学学报,2006,28(6):587-590. |
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| 作者姓名： | 李希胜 于广华 |
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| 作者单位： | 1. 北京科技大学信息工程学院,北京,100083
2. 北京科技大学材料科学与工程学院,北京,100083 |
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| 基金项目： | 国家高技术研究发展计划(863计划) |
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| 摘 要： | 研制了一种基于各向异性磁阻(AMR)传感器的车辆探测器.该车辆探测器由三维AMR传感器及相应的信号处理电路组成.当车辆驶过探测器上方时,车辆的存在将会引起周围磁场的变化,三维AMR传感器输出将发生相应的变化,根据AMR传感器的输出可判断周围空间内车辆的存在与否.对该探测器的特性进行了实验研究.实验结果表明:当车辆分别沿南北向、东西向通过AMR传感器上方时,传感器输出变化规律不同;该探测器可实现车辆探测.
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| 关 键 词： | 各向异性磁阻传感器 车辆探测器 磁阻 地磁场 磁阻传感器 车辆探测器 应用 detection vehicle sensors 变化规律 南北向 结果 研究 实验 特性 空间 判断 发生 输出 磁场 存在 电路组成 信号处理 |
| 收稿时间： | 2005-09-26 |
| 修稿时间： | 2006-03-02 |
Application of AMR sensors to vehicle detection |
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| LI Xisheng,YU Guanghua.Application of AMR sensors to vehicle detection[J].Journal of University of Science and Technology Beijing,2006,28(6):587-590. |
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| Authors: | LI Xisheng YU Guanghua |
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| Institution: | 1. Information Engineering School, University of Science and Technology Beijing, Beijing 100083, China; 2. Materials Science and Engineering School, University of Science and Technology Beijing, Beijing 100083, China |
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| Abstract: | A vehicle detector with an anisotropic magnetoresistive (AMR) sensor was developed. The vehicle detector consisted of a three-axis AMR sensor and related signal processing circuit. When a vehicle was moving over the detector, the surrounding magnetic field changed due to vehicle disturbance, and the output of the three-axis AMR sensor changed accordingly. Whether a vehicle was present or not could be judged based on the AMR sensor's output. The detector's characteristic was tested. When the vehicle being detected was moving over the detector along different directions (south-north, east-west), the output changes were different. The results show that this detector can realize the function of vehicle detection. |
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| Keywords: | AMR sensor vehicle detection magnetic resistance geomagnetic field |
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