气压传感器不确定度评定及现场校准方法研究

Research on Uncertainty Evaluation and Field Calibration Method of Air Pressure Sensor

为解决现场核查中气压传感器超差的问题,更准确地表征其测量结果,在现场核查环境中运用GUM法对PTB210型号气压传感器进行不确定度分析与评定,并研究其现场校准方法。评定结果表明,在500 hPa、800 hPa、1 050 hPa的条件下,测量结果的扩展不确定度为0.12 hPa,符合气象业务技术要求。现场校准方法能够对超差仪器进行调试,具有操作简单、通信稳定的特点。对气压传感器的不确定度评定及现场校准方法展开研究,创新性地采用现场核查专用设备,选取与其相同的测试点,模拟相似测量环境,设计稳定便捷的连接方式。该成果填补了气压传感器在现场核查中不确定度评定和现场校准方法的空白,为气象、航空、农业等领域的气压不确定度评定提供了借鉴,也为湿度、温度等其他项目的现场校准提供了参考。

In order to solve the problem of the air pressure sensor exceeding the tolerance during field inspection and more accurately characterize its measurement results,the GUM method is used to analyze and evaluate the uncertainty of the PTB210 air pressure sensor in the field inspection environment,and to study its field calibration method.The evaluation results indicate that the extended uncertainty of the measurement results is 0.12 hPa under the conditions of 500 hPa,800 hPa,and 1050 hPa,which meets the technical requirements of meteorological operations.The field calibration method can debug instruments that exceed the tolerance limit,and has the characteristics of simple operation and stable communication.Research on uncertainty evaluation and field calibration methods for air pressure sensors,innovatively using specialized equipment for field verification,selecting the same testing points,simulating similar measurement environments,and designing stable and convenient connection methods.This achievement fills the gap in uncertainty evaluation and field calibration methods for air pressure sensors in field verification,providing reference for pressure uncertainty evaluation in meteorology,aviation,agriculture and other fields,providing inspiration for field calibration of other projects such as humidity and temperature.