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首页> 外文期刊>Journal of Computers >Design and Implementation of Ultrasonic Velocity Measuring Module Based on Phase- Locked Loop
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Design and Implementation of Ultrasonic Velocity Measuring Module Based on Phase- Locked Loop

机译：基于锁相环的超声速度测量模块的设计与实现

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—Due to the important relationship between ultrasonic velocity and some properties of sample, the measurement of velocity of ultrasound is widely needed in various fields. In this paper, based on phase-locked loop technique, a new hybrid circuit is designed for ultrasonic velocity measurement and named as UV-PLL. In order to improve the stability of phase and achieve the ability of fast locking, an auxiliary capturing circuit, which consists of phase shift circuit and capturing circuit, is designed and implemented in this module. Additionally, two methods for estimating the propagation delay is compared and described in detail. The UV-PLL module is validated through the ultrasonic velocity measurement in distilled water at different temperatures. Experimental results show that the maximum relative deviation of velocity measurement is less than 0.15% and the loop can be quickly locked, indicating that this module can meet the requirements of online measurement and can be widely applied.
机译：- 超声波速度与样品的一些性质之间的重要关系，在各种领域中广泛需要超声波速度的测量。本文基于锁相循环技术，设计了一种新的混合电路，用于超声波速度测量并命名为UV-PLL。为了提高相位的稳定性并实现快速锁定的能力，在该模块中设计和实现由相移电路和捕获电路组成的辅助捕获电路。另外，比较和详细描述用于估计传播延迟的两种方法。通过不同温度的蒸馏水中的超声速度测量验证UV-PLL模块。实验结果表明，速度测量的最大相对偏差小于0.15％，循环可以快速锁定，表明该模块可以满足在线测量的要求，并可广泛应用。

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