A wind direction wind speed detection device and detection method based on ultrasonic sensor array

Abstract

The invention provides a wind direction and speed detection device and method based on an ultrasonic sensor array. The detection device comprises a pulse generator, a receiving module and a calculation module, wherein the receiving module comprises a plurality of sensors; the sensors are annularly arranged; the pulse generator is located in an annular normal direction formed by the sensors; and the signal output end of each sensor is connected with the signal input end of the calculation module. Compared with the prior art, the ultrasonic sensor array is used as the receiving module, only oneplayback module is used for sending out single-frequency ultrasonic waves, and the relative time delays of the ultrasonic waves collected by the sensors in the sensor array are calculated through an array signal processing algorithm, so that the wind speed and direction can be accurately measured. Compared with an existing sending-receiving scheme, the scheme is simpler to implement, the complexity and cost of equipment are lowered, and the reliability is improved.

Description

technical field [0001] The invention relates to the technical field of wind direction and wind speed detection, in particular to a wind direction and wind speed detection device and detection method based on an ultrasonic sensor array. Background technique [0002] In meteorological detection, aerospace and other fields, it is often necessary to measure wind speed and wind direction. At present, the commonly used wind speed detection sensors mainly include impeller type, differential pressure type, thermal ball type, ultrasonic type and other implementation methods. Among them, the mechanical measurement scheme represented by the impeller type has defects such as large start-up wind speed, large mechanical wear, and inertial error in the instantaneous wind speed, resulting in the inaccurate measurement of low wind speed scenarios lower than the start-up wind speed, and mechanical wear is likely to affect the accuracy, which is not easy Make accurate wind direction measureme...

AI Technical Summary

Problems solved by technology

Among them, the mechanical measurement scheme represented by the impeller type has defects such as large start-up wind speed, large mechanical wear, and inertial error in the instantaneous wind speed, resulting in the inaccurate measurement of low wind speed scenarios lower than the start-up wind speed, and mechanical wear is likely to affect the accuracy, which is not easy Make accurate wind direction measurements, etc.

However, the differential pressure and hot bulb implementations are very easy to receive environmental interference when used outdoors, and basically can only be used in indoor environments.

At present, the ultrasonic solution basically adopts the one-send-one-receive scheme, which requires multiple pairs of sound pickup and sound playback modules. The complexity of the entire device is high and the reliability is low.

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