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| Discussion on calibration method of wind direction sensor in automatic weather station |
| Wu Lina, Song Yuan, Lei Xiaomei, Chen Juping |
| Gansu Meteorological Information and Technical Equipment Support Center,Lanzhou 730020 |
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Abstract In view of the current verification regulation of wind direction sensor in automatic weather station,there are some problems such as interval missing and incomplete coverage of detection angle caused by Gray code state bit fault in detection point.Based on the analysis of the structure and working principle of the wind direction sensor,the shortcomings of the D2~D0 state position of the regulation detection point is given.Combined with the principle of sensor coding,an improved calibration method is proposed.Six wind direction calibration points are selected as 0°,28°,90°,180°,239°and 267°.This method has been applied to practical work and has good reference value for the calibration of wind direction sensor.
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Received: 19 October 2020
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2021, Vol. 38 
