Design on starting threshold of wind velocity calibration system for cup anemomete
Xing Hongyan1,2,Li Yang1,2
1.Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters,Nanjing University of Information Science & Technology,Nanjing 210044; 2 Jiangsu Key Laboratory of Meteorological Observation and Information Processing,Nanjing University of Information Science & Technology,Nanjing 210044
Abstract：Cup anemometer is one of the most widely used wind speed sensors.The starting threshold of wind velocity is determined by the starting torque of the sensor.Bad bearings will cause higher torque values than normal,which can effect the accuracy of the instrument.The system is designed with strain gauge force transducer.The low-power MCU MSP430 is used as the host controller.To ensure the precision of the whole system,high-precision AD and proportion measuring techniques are used.Besides,a photoelectrical switch is also adopted to measure the instantaneous torque of cup anemometer in the starting moment so as to get the starting threshold of wind velocity.The system is portable and low in power consumption so that it can be used in the field calibration of cup anemometer.
行鸿彦,李 阳. 杯式风速传感器启动风速校验系统的设计[J]. 气象水文海洋仪器, 2015, 32(1): 55-59.
Xing Hongyan,Li Yang. Design on starting threshold of wind velocity calibration system for cup anemomete. Meteorological Hydrological and Marine Instrument, 2015, 32(1): 55-59.
2015, Vol. 32 
