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一种实时3D超声定位系统的设计
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.
作者姓名:胡跃辉  周康源  周平  施俊
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
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。

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

Design of a high accuracy real-time 3D ultrasonic location system
HU Yao-hui,ZHOU Kang-yuan,ZHOU Ping,SHI Jun.Design of a high accuracy real-time 3D ultrasonic location system[J].Technical Acoustics,2004,23(1):29-32.
Authors:HU Yao-hui  ZHOU Kang-yuan  ZHOU Ping  SHI Jun
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.
Keywords:ultrasonic ranging  real-time 3D location  DSP
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