| 用超声波传感器提高比较距离大小精度的设计 |
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| 引用本文： | 张国琴.用超声波传感器提高比较距离大小精度的设计[J].浙江水利水电专科学校学报,2012,24(3):66-67,87. |
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| 作者姓名： | 张国琴 |
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| 作者单位： | 浙江水利水电专科学校,浙江杭州,310018 |
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| 基金项目： | 2010浙江省青年项目资助（22152-1）. |
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| 摘 要： | 用超声波测距会产生由传播速度和传播时间所引起的误差,因此用传统的超声波传感器测距的方法比较距离大小,在做了各种比较复杂的修正之后存存在一定误差,精度一般在厘米级别;而对距离的比较转变为先后到达顺序的比较后,可完全避免传播速度和传播时间所产生的误差,然后据此设计出一个简单、巧妙的电路,来实现到达顺序的比较,可使理论误差控制在1微米之内.
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| 关 键 词： | 超声波 传感器 距离 |
Design of Ultrasonic Sensor to Improve Distance Accuracy |
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| Zhang Guo-qin.Design of Ultrasonic Sensor to Improve Distance Accuracy[J].Journal of Zhejiang Water Conservancy and Hydropower College,2012,24(3):66-67,87. |
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| Authors: | Zhang Guo-qin |
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| Affiliation: | Zhang Guo-qin (Zhejiang Water Conservancy and Hydropower College, Hangzhou 310018, China) |
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| Abstract: | Error exists because of propagation velocity and propagation time in using ultrasonic ranging. The the method of traditional ultrasonic sensor ranging is tested and compared with the error in one or more centimeters even after all sorts of complicated amendment. A simple and ingenious circuit is designed to avoid the error caused by propagation velocity and propagation time, which can improve the measurement accuracy by sequence comparison, regulating the theoretical error less than 1 micron. |
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| Keywords: | ultrasonic sensor solar cell |
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