Research on ultrasonic velocity measuring system based on phase-locked loop

PENG Dan1; XU Ke-xin1; DU Zhen-hui1; CHANG Min1; WANG Hui2

doi:10.13873/j.1000-97872007.10.025

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Research on ultrasonic velocity measuring system based on phase-locked loop

更新时间：2025-09-11

- Research on ultrasonic velocity measuring system based on phase-locked loop
- Issue 10, Pages: 63-65+68(2007)
- 作者机构：
  
  1. 天津大学精密测试技术及仪器国家重点实验室
  2. 天津大学软件学院
- 作者简介：
- 基金信息：
- DOI：10.13873/j.1000-97872007.10.025
  CLC： TP274
- Published：2007
- 稿件说明：
移动端阅览
[1]彭丹,徐可欣,杜振辉,常敏,王晖.基于锁相环技术的超声测速系统研究[J].传感器与微系统,2007(10):63-65+68.

PENG Dan1, XU Ke-xin1, DU Zhen-hui1, et al. Research on ultrasonic velocity measuring system based on phase-locked loop[J]. 2007, (10): 63-65+68.
[1]彭丹,徐可欣,杜振辉,常敏,王晖.基于锁相环技术的超声测速系统研究[J].传感器与微系统,2007(10):63-65+68. DOI： 10.13873/j.1000-97872007.10.025.

PENG Dan1, XU Ke-xin1, DU Zhen-hui1, et al. Research on ultrasonic velocity measuring system based on phase-locked loop[J]. 2007, (10): 63-65+68. DOI： 10.13873/j.1000-97872007.10.025.

摘要

声速测量在食品检测领域中具有广泛的需求和应用

在讨论锁相环测速原理的基础上

设计了一种声速测量系统。结合辅助电路

改进后的锁相环路减小了捕获时间

增加了稳态相差的稳定性

提高了测量精度。实验结果表明:加入辅助电路的锁相环测速系统

测量速度快

最大误差小于0.15%

能够满足在线测量的要求。

Abstract

Measurement of velocity of ultrasound is widely needed in food detection field.Based on the principle of measuring velocity using phase-locked loop

a novel measuring system for ultrasound is constructed.Combined with auxiliary capturing circuit

not only is the capturing time of loop reduced effectively

but also the stability of stable phase difference is enhanced.Experiment results show that the measurement of velocity based on phase-locked loop is fast and the maximum relative deviation of the system is less than 0.15 %

which can meet the needs of online measurement.

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references

In-line concentration measurement in complex liquids using ultrasonic sensors [J] . Bernd Henning,Peter-Christoph Daur,Stefan Prange,Karsten Dierks,Peter Hauptmann. Ultrasonics . 2000 (1)

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