| 摘要: |
| 基于实验与计算相结合的方法，在实验室配制标准物质去检测全新的FDR型土壤水分传感器，得出被测值；利用烘干称重法测量标准物质的容积含水量，得出标准值。使用数学方法分析检验两者之间的误差，验证贵州省气象部门FDR型土壤水分传感器校准方法的可行性。结果显示：误差在（-2.5%~2.5%）的传感器占总传感器的99.4%；误差在（-2%~2%）的传感器占总传感器的97.5%；在99.7%的置信区域内，所有校准点的标准差都小于5%。结合工作实际检验，该校准方法可应用于贵州省土壤水分传感器校准。 |
| 关键词: 土壤水分传感器；校准方法；烘干称重法 |
| DOI： |
| 投稿时间：2020-12-09 |
| 基金项目:中国气象局创新发展专项(ZQC-J20034)：土壤水分观测仪自动检测系统建设 |
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| Analysis on Calibration Method of Soil Moisture Sensor in Guizhou Province |
| XU Gaojing,WANG Qiang,Lyu Linjing,CHEN Shengyuan |
| (Meteorological Observation Technology and Support Centre of Guizhou Province,Guiyang, 550081 , China) |
| Abstract: |
| Based on the method of combining experiment and calculation, the new FDR type soil moisture sensor was tested by preparing standard material in the laboratory, and the measured value was obtained. The volumetric water content of standard material was measured by drying and weighing method, and the standard value was obtained. The mathematical method was used to analyze and test the errors between them, and verify the feasibility of calibration method of FDR type soil moisture sensor of Guizhou Meteorological. The sensors with error（-2.5% ~ 2.5%）account for 99.4% and with error of（-2%~2%）account for 97.5% of the total sensors respectively. Within the confidence interval of 99.7%, the standard deviation of all calibration points is less than 5%. Combined with the practical work, the calibration method can be applied to soil moisture sensor calibration in Guizhou Province. |
| Key words: soil moisture sensor； the method of calibration； drying and weighing method |
