【摘要】 近年来 ,超声波作为一项较新的技术应用越来越广泛。本文采用复杂可编程逻辑器件 CPL D研制出一种用时差法来测量流量等数据的高精度超声波流量计系统 ,实验证明其工作稳定 ,精度高。更多还原

【Abstract】 Recently, the application of ultrasonic is being used widely as a new technology. The high-precision ultrasonic flowmeter system is designed and developed, which use time-difference method to measure the variables such as flow, volume and so on, and it is proved by the experiment that the system run stably and is of high precision.更多还原