| 胡跃辉,周康源,周平,施俊.一种实时3D超声定位系统的设计[J].声学技术,2004,(1):29~32 |
| 一种实时3D超声定位系统的设计 |
| Design of a high accuracy real-time 3D ultrasonic location system |
| 投稿时间：2002-06-19 修订日期：2002-09-29 |
| DOI： |
| 中文关键词: 超声测距 3D实时定位 DSP |
| 英文关键词: ultrasonic ranging real-time 3D location DSP |
| 基金项目: |
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| 摘要点击次数: 1983 |
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| 中文摘要: |
| 文章叙述了一种实时3D高精度超声定位系统。接收声信号经过TGC与对数放大器增益补偿和动态范围压缩后,进行数字化变换。在DSP内部采用动态门限跟踪技术以提高测试精度,并对结果进行加权算术平均处理。通过对40kHz3D定位系统的试验,已达到了1cm的3D定位精度。在本系统的基础上加以改进和提高,即可达到实用的目的。 |
| 英文摘要: |
| A high accuracy real-time 3D ultrasonic location system is discussed in this article. The signal received is sampled after passing through a TGC and a logarithmic amplifier. Inside the DSP, a dynamic threshold trace technique is used to improve the accuracy. The result is processed with weighted arithmetic averaging. Tests on a 40kHz 3D location system show that a location accuracy of 1cm is obtained. This system can be made practical after certain improvements. |
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