智能干湿球相对湿度传感器的设计  

Design of Intelligent Psychrometric Relative Humidity Sensor

作　　者：杨泽林[1] 李相白[1] 李建春[1] 田亚立[1] 

机构地区：[1]宁夏大学物理电气信息学院,宁夏银川750021

出　　处：《自动化仪表》2010年第2期16-20,共5页Process Automation Instrumentation

基　　金：宁夏高校科学研究基金资助项目(编号:200804)

摘　　要：针对现有智能干湿球法测湿传感器影响因素考虑不够全面、功能设计不够灵活等问题，在精确界定测湿系数和风速、环境温度的基础上，提出了一种新的智能干湿球相对湿度传感器的设计方案。从误差控制角度选择该传感器合适的组成器件，并对干湿球温度和大气压进行高精度测量，同时将新型智能干湿球湿度传感器的测量范围扩展到0～80℃。理论分析表明，该传感器的温度稳定判别和容差等功能设置加强了智能干湿球湿度传感器的可操作性，其扩展不确定度高于现有水平。In existing intelligent psychrometric humidity sensors, the influencing factors have not been considered completely, and the functions have not been designed flexibly, thus on the basis of accurately determine the temperature measuring coefficient, wind speed and environmental temperature, the new design method of an intelligent psychrometric relative humidity sensor is proposed. The appropriate compositions of this sensor are selected from error control angle; the dry-wet temperature and atmospheric pressure are measured precisely, and the measurement range of this sensor is expanded to 0 - 80℃. The theoretical analysis shows that the function settings of the sensor for temperature stability distinguish and tolerance enhances the operability and expands the existing uncertainty level.

关 键 词：干湿球法 风速 高温 控制 测量不确定度 

分 类 号：TP212.6[自动化与计算机技术—检测技术与自动化装置] TP216.1[自动化与计算机技术—控制科学与工程]