| 一种实时3D超声定位系统的设计 |
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| 引用本文： | 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, 23(1): 29-32 |
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| 作者姓名： | 胡跃辉 周康源 周平 施俊 |
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| 作者单位： | 中国科学技术大学电子工程与信息科学系,合肥,230027 |
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| 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40kHz 3D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。
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| 关 键 词： | 超声测距 3D实时定位系统 对数放大器增益补偿 DSP 动态门限跟踪技术 电子游戏 |
| 文章编号： | 1000-3630(2004)01-0029-04 |
| 收稿时间： | 2002-06-19 |
| 修稿时间： | 2002-09-29 |
Design of a high accuracy real-time 3D ultrasonic location system |
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| HU Yao-hui,ZHOU Kang-yuan,ZHOU Ping and SHI Jun. Design of a high accuracy real-time 3D ultrasonic location system[J]. Technical Acoustics, 2004, 23(1): 29-32 |
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| Authors: | HU Yao-hui ZHOU Kang-yuan ZHOU Ping SHI Jun |
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| Affiliation: | Department of Electronic Engineering and Information Science, University of Science and Technology of China, USTC, Hefei 230027, China;Department of Electronic Engineering and Information Science, University of Science and Technology of China, USTC, Hefei 230027, China;Department of Electronic Engineering and Information Science, University of Science and Technology of China, USTC, Hefei 230027, China;Department of Electronic Engineering and Information Science, University of Science and Technology of China, USTC, Hefei 230027, China |
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| Abstract: | 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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| Keywords: | ultrasonic ranging real-time 3D location DSP |
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