| 基于单接收头的超声波多目标测距 |
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| 引用本文： | 章小兵、 宋爱国 唐鸿儒. 基于单接收头的超声波多目标测距[J]. 传感技术学报, 2007, 20(5): 1167-1170 |
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| 作者姓名： | 章小兵、 宋爱国 唐鸿儒 |
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| 作者单位： | 1. 安徽工业大学电气信息学院,安徽,马鞍山,243001;东南大学仪器科学系,南京,210096
2. 东南大学仪器科学系,南京,210096 |
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| 基金项目： | 霍英东教育基金，国家自然科学基金 |
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| 摘 要： | 为了使超声波传感器能在动态环境下定位,要求单超声波接收头能测量多个目标.首先分析了超声波发射头产生的超声波特点,据此推导出接收信号的波形表达式.其次根据接收信号特点,系统标定时用接收信号包络峰值的0.5倍作阈值,而测量时用小阈值,以防止距离信息丢失.最后用C8051F021单片机设计了单接收头多目标测距系统.在2目标与接收头距离之差大于30 cm以上时能较精确地测量出2个距离.
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| 关 键 词： | 超声波 测量距离 多目标 电路设计 |
| 文章编号： | 1004-1699（2007）05-1167-04 |
| 收稿时间： | 2006-04-17 |
| 修稿时间： | 2006-05-15 |
Multi-goal measure based on single ultrasonic receiver |
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| Zhang Xiaobing,Song Aiguo Tang Hongru. Multi-goal measure based on single ultrasonic receiver[J]. Journal of Transduction Technology, 2007, 20(5): 1167-1170 |
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| Authors: | Zhang Xiaobing Song Aiguo Tang Hongru |
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| Affiliation: | 1. Electricity and Communication College of Anhui university of industry, Maanshan Anhui 243002, China; 2. Department of Instrument Science and Engineering of Southeast University, Nanjing 210096, China |
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| Abstract: | A ultrasonic receiver is required to measure a few goals in order to enable localization under the dynamic condition. Firstly the characteristic of ultrasonic from a transmitter is analyzed and then the wave expression of receiving signal is deduced. Secondly a half of receiving signal peak is adopted as threshold in calibrating system and a low threshold is used in measure to avoid losing information. Finally a C8051F021 chip is used to design multi-goal measure system of single receiver. Two distances are measured accurately when the interval of the distances from two goals to the receiver is more than 30 cm. |
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| Keywords: | ultrasonic to measure distances multi-goal circuit design |
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