The Technology Study of Eliminating the Same Frequency Interference in the Flow Measurement of Engine Thermal Equilibrium
For the same frequency interference with ultrasonic which is difficult to eliminate with filter in the flow measurement of the engine thermal equilibrium, this paper puts forward the way which with pseudorandom code modulation sine wave as the drive signal for ultrasonic transducer. This paper analyzes the interference in the flow measurement of engine thermal equilibrium,and making use of the technology of eliminating the same frequency interference the author also studies the signal processing method of eliminating the same frequency interference based on pseudo-random code modulated sine wave shot by shoot transducer. According to the characteristics of sending and receiving signals, to eliminate the same frequency interference, this paper devises the flow measurement system of engine thermal equilibrium based on ultrasonic. Through experiment, this technology with pseudo-random code modulation sine wave as the drive signal for ultrasonic transducer can eliminate the same frequency interference which is difficult to eliminate in measurement, which not only improving the stability of the measurement system,but also the accuracy and precision of testing data.
Thermal Equilibrium flow measurement same frequency interference
Hairong Jia Xueying Zhang Chensheng Jin
College of Information Engineering,Taiyuan University of Technology,Taiyuan, Shanxi, China
国际会议
2010 2nd International Conference on Signal Processing System(2010年信号处理系统国际会议 ICSPS 2010)
大连
英文
1957-1960
2010-07-05（万方平台首次上网日期，不代表论文的发表时间）