Study of echo signal processing for time-differencing ultrasonic measurement

CHENG Jun; ZHANG Jin; WANG Bo-xiong

doi:10.13873/j.1000-97872012.12.017

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Study of echo signal processing for time-differencing ultrasonic measurement

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- Study of echo signal processing for time-differencing ultrasonic measurement
- Vol. 31, Issue 12, Pages: 34-37(2012)
- 作者机构：
  
  清华大学精密仪器与机械学系精密测试技术及仪器国家重点实验室
- 作者简介：
- 基金信息：
- DOI：10.13873/j.1000-97872012.12.017
  CLC： TP274.53;TN911.7
- Published：2012
- 稿件说明：
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[1]成俊,张金,王伯雄.时差式超声测量回波信号处理研究[J].传感器与微系统,2012,31(12):34-37.

CHENG Jun, ZHANG Jin, WANG Bo-xiong. Study of echo signal processing for time-differencing ultrasonic measurement[J]. 2012, 31(12): 34-37.
[1]成俊,张金,王伯雄.时差式超声测量回波信号处理研究[J].传感器与微系统,2012,31(12):34-37. DOI： 10.13873/j.1000-97872012.12.017.

CHENG Jun, ZHANG Jin, WANG Bo-xiong. Study of echo signal processing for time-differencing ultrasonic measurement[J]. 2012, 31(12): 34-37. DOI： 10.13873/j.1000-97872012.12.017.

摘要

研究了一种软、硬件结合的时差式超声测量回波信号处理方法。分析介绍了系统的硬件组成和实现方法

概述了软件设计流程与主要功能。超声回波信号调理模块提取从接收换能器得到的原始超声波信号并转换成后续处理电路易于处理的稳定回波信号。利用现场可编程门阵列（FPGA）的可编程特性设计了数字信号处理模块

得到过零比较信号和阈值比较信号

从而锁定回波到达时刻。

Abstract

An echo signal processing method combining software and hardware for time-differencing ultrasonic measurement is studied.The hardware constitution and realization method

the software design procedure

and the major functions of the software are described.An ultrasonic echo signal conditioning module extracts original ultrasonic wave signal from the receiving transducer and converts it into a stable echo signal which is easy to process by the follow-up processing circuit.By using programmable property of FPGA

digital signal processing module is designed

with which the zero-crossing comparison signal and the threshold comparison signal are obtained to lock up the arriving time of echo signal.

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references

FPGA-based High-precision Measurement Algorithm for the Ultrasonic Echo Time of Flight [J]. 王伯雄,张金. Journal of Measurement Science and Instrumentation . 2010(02)

基于FPGA的时差法超声波流量计的设计 [J]. 肖海,王亚非,高椿明. 传感器与微系统 . 2009(08)

传播时间法超声流量计信号处理技术进展述评 [J]. 张涛,蒲诚,赵宇洋. 化工自动化及仪表 . 2009(04)

声时测量精度的主要影响因素分析 [J]. 周艳,王润田,梁鸿翔. 声学技术 . 2008(02)

电子系统设计基础[M]. 电子工业出版社 , 张金, 2011

现代动态测试技术[M]. 国防工业出版社 , 王跃科等编著, 2003

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