Research on temperature channel calibration of

摘要：

A method of utilizing active resistance network to calibrate the temperature channel of data-acquisition unit is proposed in this paper. This method changes gate-source voltage by micro-controller so as to simulate the resistance. Compares resistance value measured by data-acquisition unit with the simulated resistances to calibrate the performance of the data-acquisition unit. Take DT50 data-acquisition unit in CAWS600 AWS for an example. By software commands, output current and A/D sample duration time of the data-acquisition unit temperature channel are changed to resolve the problem of parameters mismatch, then this data-acquisition unit is calibrated effectively. The experiment result shows this approach provide a reliable means to calibrate AWS data-acquisition unit.

关键词： active resistance network temperature AWS data-acquisition unit calibration.

作者: Wu Xiangjuan Lv Wenhua Xing Hongyan Zou Yingquan

作者单位: Jiangsu Technology and Engineering Center of Meteorological Sensor Network,Nanjing University of Inf Meteorological Observation Center,China Meteorological Administration,Beijing,100081,China

会议类型: 国际会议

会议名称: 2011 10th International Conference on Electronic Measurement & Instruments(第十届电子测量与仪器国际会议 ICEMI2011)

会议地点: 成都

会议语种:英文

页码: 543-546

在线出版日期: 2011-08-16（万方平台首次上网日期，不代表论文的发表时间）