Environment self-adaptive ultrasonic wind measurement system

Abstract

The invention discloses an environment self-adaptive ultrasonic wind measurement system. The system comprises a wind direction and wind speed measurement module, a central processing module, a self-recovery module and a lightning protection module; the wind direction and wind speed measurement module is used for sequentially transmitting ultrasonic signals to obtain calibration flight time, transmitting the ultrasonic signals to obtain measurement flight time and sending the measurement flight time to the central processing module; the central processing module is used for starting the wind direction and wind speed measurement module at regular time, controlling the wind direction and wind speed measurement module to measure the wind speed and the wind direction after self-calibration, calculating the wind speed and the wind direction angle, and outputting thewind speed and the wind direction angle according to a fixed format; the central processing module is also used for controlling the self-recovery module to work to meet the temperature and humidity conditions of the test; the self-recovery module is used for measuring environment temperature, humidity and water vapor indexes, inputting the indexes into the central processing module, and starting a heating mode to enable the temperature, humidity and water vapor indexes of the wind direction and wind speed measurement module to meet test conditions; and the lightning protection module is used for preventing lightning damage.

Description

technical field [0001] The invention relates to the technical field of wind speed and wind direction measurement, in particular to an environment adaptive ultrasonic wind measurement system. Background technique [0002] Accurate measurement of wind speed and wind direction data on the ground surface has a very wide demand in various industries in today's society, such as weather forecasting, military affairs, navigation, sports and so on. Traditional mechanical anemometers are simple in structure and mature in technology. Most of them use photocell or magnetic coding to measure wind speed and direction. They are widely used in wind power generation, meteorological monitoring, railway and other industries, but they have problems such as mechanical wear, blockage and freezing. It cannot work stably and reliably for a long time in harsh weather environments such as dust and freezing rain. [0003] At present, with the development of ultrasonic technology, ultrasonic wind meas...

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Problems solved by technology

Due to the late start of research on ultrasonic wind measurement, immature technology, and high research and development costs, domestic manufacturers are mostly in the stage of imitation research and development in ultrasonic wind measurement, and there is still a big gap between them and foreign countries.

There are disadvantages such as system instability, severe weather such as frost and snow, and large measurement errors. At present, domestic ultrasonic anemometers basically use temperature compensation to compensate for the error of ultrasonic propagation speed in the air. They are also relatively weak in terms of lightning and adapting to the environment. The winter in the area is relatively cold, the temperature is below 0 degrees, and the ultrasonic wind measurement system is at low temperature, and there is a problem that the wind measurement instrument cannot work normally due to the freezing of the ultrasonic transducer and the reflecting surface. In some southern areas, there are many lightning and high humidity It also affects the stability and measurement accuracy of the wind measurement system. Therefore, it is of great practical importance to develop an ultrasonic wind measurement system with high measurement accuracy, good product performance, simple circuit, and strong ability to resist frost, snow, lightning strikes and other severe weather. significance

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