虚拟自动气象站湿度传感器的温度补偿

摘要

In order to solve the problem that temperature influence on measuring accuracy of humidity sensor,a humidity com-pensation method based on virtual technology was proposed in this paper.The graphics processing technology of Labview platform, BP neural network and support vector machine algorithm were respectively used to establish the humidity compensation model.The experimental platform was built with temperature adjustable wet box,JJQ1 meteorological signal simulator,HMP45D.The experi-mental data shows that compensation error data reduces the one order of magnitude and the platform can effectively compensate the influence of temperature and improve the moisture measurement accuracy of virtual automatic weather station.%针对湿度传感器测量精度受温度影响问题,提出一种采用虚拟技术的湿度补偿方法.利用LabVIEW平台的图形化处理技术,分别采用BP神经网络、支持向量机(SVM)算法建立了湿度补偿模型.以调温调湿箱、JJQ1气象信号模拟器、HMP45D湿度传感器搭建了实验平台.实验数据表明:补偿后数据误差降低了1个数量级,能够有效补偿温度对湿度传感器的影响,提高虚拟自动气象站湿度测量的准确度.