| 远距离超声测距传感器激励脉冲研究 |
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| 引用本文： | 琚晓涛,谷立臣,闫小乐.远距离超声测距传感器激励脉冲研究[J].传感器与微系统,2014(1):35-37,41. |
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| 作者姓名： | 琚晓涛 谷立臣 闫小乐 |
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| 作者单位： | [1]西安建筑科技大学机电学院,陕西西安710055 [2]西安科技大学理学院,陕西西安710055 |
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| 基金项目： | 国家自然科学基金资助项目（50975218）;陕西省教育厅专项基金资助项目（2013JK1011）;西安科技大学培育基金资助项目（2009029） |
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| 摘 要： | 超声传感器不同发射激励对超声发射功率有很大影响,决定了空气超声波探测距离。对超声激励脉冲进行了功率谱分析,给出了不同类型激励脉冲与发射功率之间的关系。设计了远距离超声传感器双极性发射电路,实现了脉冲个数和脉冲频率可调。通过实验研究,确定了超声激励脉冲的类型、个数与激励电压。该电路已成功用于远距离超声波测距系统中,能稳定、可靠地检测25 m处的障碍物。
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| 关 键 词： | 超声传感器 功率谱 激励脉冲 发射功率 |
Research on exciting pulse of long-distance ultrasonic ranging sensor |
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| JU Xiao-tao,GU Li-chen,YAN Xiao-le.Research on exciting pulse of long-distance ultrasonic ranging sensor[J].Transducer and Microsystem Technology,2014(1):35-37,41. |
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| Authors: | JU Xiao-tao GU Li-chen YAN Xiao-le |
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| Affiliation: | 1. School of Mechanical and Electronic Engineering, Xi＇ an University of Architecture and Technology, Xi＇ an 710055, China; 2. School of Science,Xi＇ an University of Science and Technology, Xi＇an 710055, China) |
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| Abstract: | Different transmission exciting pulses of ultrasonic sensor have great effect on ultrasonic transmission power,and determine ultrasonic wave detection range. The relationship between different kinds of exciting pulse and transmission power is given by analysis of power spectrum. The bipolar transmitter circuit of long-distance ultrasonic sensor is designed to adjust the number and frequency of pulse. The type,number,excitation vohage of ultrasonic exciting pulse are determined via experimental studies. The circuit has been successfully used in long- distance ultrasonic ranging system, and can reliably and stably detect the obstacles with the distance about 25 m. |
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| Keywords: | ultrasonic sensor power spectrum exciting pulse transmission power |
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