WIND VECTOR MEASUREMENT BASED ON THREE MUTUALLYTRANSMITTING ULTRASONIC SENSORS

Liu Xiaosong; Xie Xiaoran; Shan Zebiao; Han Mingxuan

doi:10.19912/j.0254-0096.tynxb.2022-0797

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Acta Energiae Solaris Sinica ›› 2023, Vol. 44 ›› Issue (9) : 411-417. DOI: 10.19912/j.0254-0096.tynxb.2022-0797

WIND VECTOR MEASUREMENT BASED ON THREE MUTUALLYTRANSMITTING ULTRASONIC SENSORS

Liu Xiaosong¹, Xie Xiaoran¹, Shan Zebiao^1-3, Han Mingxuan¹

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Abstract

In order to solve the problems existing in the current ultrasonic wind measuring instrument, such as low measurement accuracy, great influence by environment temperature, humidity and shadow effect. A wind vector measurement method is proposed based on an ultrasonic sensor array structure with three mutually transmitting array elements. The wind measuring structure in this paper is composed of three transceiver integrated ultrasonic sensors. Combined with time-difference method, wind vector measurement model is built according to the structural characteristics of three-array-element system for eliminating the influence of environment temperature, humidity and shadow effect on wind vector measurement. Combined with fast Fourier transform, a time delay estimation method based on correlation method is used to estimate the propagation time, and the computational complexity of the algorithm is reduced. At last, simulation experiments are carried out to verify the effectiveness of the proposed algorithm, and the wind measurement system with three mutually transmitting ultrasonic sensors is built for measured data experiments. According to the actual test results, the relative error of wind speed is 2.75% and the measuring error of wind direction is 2.5°, which basically meets the technical requirements in the field of wind measurement.

Key words

anemometry / ultrasonic measurement / time measurement / correlation method / three mutually transmitting ultrasonic sensors

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Liu Xiaosong, Xie Xiaoran, Shan Zebiao, Han Mingxuan. WIND VECTOR MEASUREMENT BASED ON THREE MUTUALLYTRANSMITTING ULTRASONIC SENSORS[J]. Acta Energiae Solaris Sinica. 2023, 44(9): 411-417 https://doi.org/10.19912/j.0254-0096.tynxb.2022-0797

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