新型CPLD在井下超声石油流量计中的应用

Application of new CPLD in downhole ultrasonic flowmeter

摘要: 简要介绍一种新型的井下超声波石油流量计。采用的是倾斜式换能器布放方式,可以提高井下石油流量的测量精度;该流量计利用新一代高性能车用温度级别的CPLD芯片LC4128ZC-75T100E代替分立元件,能简化超声流量计的电路设计,也提高了系统的稳定性和测量精度,解决了井下系统需要的体积和温度要求。

Abstract: A new kind of downhole ultrasonic flowmeter is introduced,which increases the measure-ment accuracy of downhole flowmeter by using a leaning mode to deploy transducers.Instead of discrete devices,a new CPLD chip,LC4128ZC-75T100E,is used in the circuit design,leading to a compact and robust system.