Wind speed and direction measurement based on ultrasonic phase reversal
SHAN Zebiao1,2,3, HAN Mingxuan1, YU Boli1, LIU Xiaosong1
1.School of Electronic and Information Engineering, Changchun University of Science and Technology, Changchun 130022, China;
2.Changchun Meteorological Instrument Research Institute, Changchun 130102, China;
3.College of Communication Engineering, Jilin University, Changchun 130022, China
Abstract：Due to the existence of the noise in the ultrasonic wind measurement system, it is difficult to determine the sending and receiving time point of ultrasonic, and then the wind measuring accuracy is affected. To solve this problem, a wind speed and direction measurement method based on phase inversion of ultrasonic signal is proposed. In this method, the wind measurement structure with orthogonal mutually transmitting ultrasonic sensors, which is based on the relative time difference method, is adopted. The ultrasonic transmitting signal is inverted in phase at a certain time, remember this moment for the ultrasonic transmitting time point. Then a lock-in amplifier is used to deal with the ultrasonic received signal, where the phase sensitive detector is sensitive to phase change and has good performance in noise suppression, on that account, the phase inversion point of the ultrasonic received signal can be accurately obtained, mark it as the ultrasonic received time point. Finally, the wind speed is calculated by measuring the ultrasonic transmission time between the two time points, and then the actual wind speed and direction is obtained. The feasibility and effectiveness of the proposed method are verified by numerical simulation experiments and actual measured data. Experimental results show that the proposed method has good measuring performance in the existence of Gaussian noise or mixed with non-Gaussian impulse noise, and has higher measuring accuracy than array wind measurement method and correlation method.
单泽彪1,2,3，韩明轩1，于渤力1，刘小松1. 基于相位翻转的超声波风速风向测量[J]. 振动与冲击, 2023, 42(9): 230-235.
SHAN Zebiao1,2,3, HAN Mingxuan1, YU Boli1, LIU Xiaosong1. Wind speed and direction measurement based on ultrasonic phase reversal. JOURNAL OF VIBRATION AND SHOCK, 2023, 42(9): 230-235.
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