摘要
杯式风速传感器是目前应用最为广泛的风速传感器,其启动风速取决于它的启动力矩,不良的轴承会导致传感器的启动力矩比正常值偏高,从而影响其测量的准确性。为此设计开发了杯式风速传感器启动风速检验系统,该系统以应变式力传感器为测力元件,MSP430低功耗单片机作为主控芯片,采用高精度AD转换芯片以及比例式测量技术保证了系统的精度,辅以光电开关实现对杯式风速传感器启动力矩的测量,最终达到校验其启动风速的目的。本系统功耗小,便于携带,适用于杯式风速传感器启动力矩(启动风速)的现场校验。
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.
出处
《气象水文海洋仪器》
2015年第1期55-59,共5页
Meteorological,Hydrological and Marine Instruments
基金
国家自然科学基金(批准号:61072133)
江苏省产学研联合创新资金计划(批准号:BY2013007-02
BY2011112)
江苏省高校科研成果产业化推进项目(批准号:JHB2011-15)
江苏省"信息与通信工程"优势学科资助
关键词
启动风速
启动力矩
应变式力传感器
校验
starting threshold of wind velocity
starting torque
strain gauge force transducer
calibration
