In order to solve the problems of complex circuit and low measurement accuracy of traditional ultrasonic flow measure-ment,an ultrasonic fluid measurement system based on SOPC is proposed.The SOPC system is the core of the whole system.The con-cept of the average velocity of the pipe section is introduced in the measurement,and the linear average velocity is compensated by the flow field correction coefficient,which improves the measurement accuracy.The measurement results show that the system has good repeatability,and the relative error is less than 1%when the flow rate is greater than 10(m·s-1).The system has the advantages of simple hardware structure,low cost,small size and online upgrade,and has strong practical value.
维普
万方数据