Three-dimensional non-orthogonal ultrasonic array wind measurement device with adjacent distance between transducer groups

Abstract

The invention discloses a three-dimensional non-orthogonal ultrasonic array wind measurement device with the adjacent distance between transducer groups. A main control board receives a measurement command send by an upper computer, and then a cycle of three-dimensional wind speed and direction measurement is started again. A main control board measures the temperature and humidity for the calibration of sound velocity. After calibration, the main control board generates a square wave drive signal, and transmits the square wave drive signal to a transmitting and receiving board for controllingthe mission of an excitation signal. The excitation signal excites an ultrasonic transducer to emit an ultrasonic wave and the ultrasonic wave propagates in the air with the wind speed information toreach a receiving transducer and then an echo signal is generated. The echo signal is conditioned by an echo conditioning circuit, and then is transmitted to the main control board. The main controlboard performs the ADC collection and quantification, and then extracts the transmission time information of the corresponding ultrasonic wave in the air, so that the wind speed components in four directions are calculated. Finally, the wind speed and direction in a three-dimensional space are solved through the wind speed components of three pairs of on-loop transducers in three directions, and ameasurement result is detected through the wind speed component measured by one pair of transducers at the circle center.

Description

technical field [0001] The invention belongs to the technical field of wind measurement, and more specifically relates to a three-dimensional non-orthogonal ultrasonic array wind measurement device with adjustable transducer group distances. Background technique [0002] At present, there are many types of anemometers used in various industries, and their working principles and measurement performance are also different. Among them, mechanical anemometers are more commonly used, such as the commonly used wind cup and propeller anemometers. Traditional mechanical anemometers have certain advantages, such as: low cost, long history, widespread use, and complete theory and measurement data. However, due to the rotating parts of the traditional mechanical anemometer, it is prone to wear and tear, and at the same time, bad weather, sand, dust, and salt spray will also cause corrosion to it. Due to the existence of friction, the mechanical anemometer also has a start-up wind spee...

AI Technical Summary

Problems solved by technology

[0010] Table 1 is a comparison of the advantages and disadvantages of commonly used ultrasonic anemometer methods;

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