国产HS02型湿敏电容湿度传感器性能分析

采取同球比对施放方式,选择瑞士SNOWWHITE露点式湿度探空仪作为比对标准,使用29次同球比对数据,分白天与夜间,利用随高度变化、温度分段,以及高度、温度与湿度综合分段3种方法,对大桥HS02型湿度传感器进行评估。结果表明:(1)与国外先进湿度测量仪器相比,大桥HS02型湿度传感器在准确性与稳定性方面还存在一定差距,特别表现在低温性能方面;(2)除了白天20℃以上与-30℃以下温度段大桥HS02型湿度探测偏干外,其他均呈偏湿状态,夜间所有湿度段均呈偏湿状态;(3)大桥HS02型湿度探测基本上呈现中间湿度段随机误差偏大,而两端逐渐减小的趋势,近似于">"字型变化。

Capacity Analysis on China-Made HS02 HumiditySensitive Capacitor Sensor

In order to improve upper-air humidity observation data quality,the capacity analysis of HS02 humidity-sensitive capacitor sensor has been made through participating in the 8th WMO Yangjiang radiosonde international intercomparison,in which multi-sonde with the same balloon model has been applied to total 29 launching,as well as Swiss Snowwhite dewpoint humidity radiosonde as reference.Moreover,three different methods are applied for the analysis,considering pressure factor,temperature factor and mixing factors(pressure,temperature and humidity).The analyzed results are as follows:(1) In terms of precision and stability,big gap still exist between HS02 humidity sensor and foreign advanced humidity sensor,especially in low temperature environment.(2) Regarding temperature segment analysis,HS02 humidity sensor have wet bias both in daytime and nighttime except for the 2 temperature segments in daytime(above 0 ℃ and below-30 ℃).(3) With respect to humidity segment comparison analysis,the random error of HS02 humidity sensor show change trend with ’>’ type,i.e.,big error for middle level humidity segment and decreasing errors for high and low level humidity segments.In future,low temperature performance improvement and correction algorithm for HS02 humidity sensor will be focused as well as stability and consistency improvement,aiming at acquiring high quality data of upper-air humidity observation.