Flow Rate Measurement System Using Thermal Air Flow Sensor

摘要：

An intelligent digital flow rate measurement system is presented to replace the conventional hot-wire flow rate measurement system,which uses original analog feedback circuit. In this paper,the conventional Wheatstone bridge measurement circuit is replaced by a new Pulse Width Modulation (PWM) circuit for the purpose of energy conservation. The system employs a PIC18F452 chip to interface a thermal flow measurement system to measure the flow rate. And a signal prediction algorithm is introduced to speed up the measurement. It has been proved that the performance of the intelligent digital flow rate measurement system has been increased compared with conventional flow rate measurement system based on the thermal airflow sensor.

关键词： flow rate measurement Pulse Width Modulation energy conservation prediction algorithm.

作者: Yundong Cao Zhengchun Xie Chunguang Hou

作者单位: School of Electrical Engineering,Shenyang University of Technology,Shenyang 110178,China No.111 Shenliao West Street,Shenyang Economic and Technical Development Zone,Shenyang,Liaoning,China

会议类型: 国际会议

会议名称: 2009 9th International Conference on Electronic Measurement & Instruments(第九届电子测量与仪器国际会议 ICEMI2009)

会议地点: 北京

会议语种:英文

页码: 1962-1966

在线出版日期: 2009-08-16（万方平台首次上网日期，不代表论文的发表时间）