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| Calibration system for AWS evaporation sensors |
| Shao Weijian1, 2, Lü Wenhua3, Xing Hongyan1, 2 |
| 1.Jiangsu Key Laboratory of Meteorological Observation and Information Processing, Nanjing University of Information Science and Technology, Nanjing 210044;2.School of Electronic and Information Engineering, Nanjing University of Information Science and Technology, Nanjing 210044;3.CMA Meteorological Observation Centre, Beijing 100081 |
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Abstract In order to solve electrical signal problems of the evaporation sensor existed in the automatic weather station, a kind of analog signal calibration system is designed by means of the analysis and research of evaporation sensor signals of the automatic weather station.Based on the current transmitter XTR116, high precision AD/DA converter and the MSP430 CPU as the core, the software program and hardware circuit are developed adopting with the comprehensive measure of software and hardware calibration.The experimental results show that the system is stability and high reliability, and measurement accuracy can reach 0.9%, which can be used for accurate calibration of evaporation sensors current signal output in automatic weather station.
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Received: 04 December 2013
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| [1] |
中国气象局.地面气象观测规范[M].北京:气象出版社, 2003.
|
| [2] |
宋树礼, 王柏林.蒸发传感器工作原理及性能比较[J].气象科技, 2010, 38(1):111-113.
|
| [3] |
刘晓娟, 赵庆明, 唐君明, 等.基于单片机的数控恒流源设计[J].哈尔滨师范大学自然科学学报, 2008, 24(6):39-42.
|
| [4] |
黄晓云, 赵晓利, 陈文燕, 等.CAWS600-SE自动站蒸发故障排查及日常维护[J].气象水文海洋仪器, 2013, 30(1):111-113.
|
| [5] |
李黄.自动气象站使用手册[M].北京:气象出版社, 2007.
|
| [6] |
秦龙.MSP430单片机应用系统开发典型实例[M].北京:中国电力出版社, 2005.
|
| [7] |
童诗白, 华成英.模拟电子线路基础[M].北京:高等教育出版社, 2001.
|
| [8] |
范羽.电流变送器原理及在工业上的应用[J].广西轻工业机械与电气, 2010(5):33-35.
|
|
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2014, Vol. 31 
