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湿度传感器有各种类型,大致可分为(1)离子电导型,(2)静电容型,(3)热电导型。其中主流是离子电导型,又可分为两种形式:陶瓷式和高分子式。高分子式中又可分为三类,根据相对湿度的情况来分。检测相对湿度为100％,即结露状态的传感器为结露传感器,检测70～100％高湿度的传感器有高湿度开关传感器,对30～70％的是湿度传感器。高分子式的湿度传感器都是利用了树脂的吸水牲和由吸水引起电阻值的变化。各种传感器虽各有特点,但除陶瓷传感器
There are various types of humidity sensors, can be divided into (1) ion conductivity type, (2) capacitance type, (3) thermal conductivity type. One of the mainstream is ionic conductivity type, can be divided into two forms: ceramic and polymer type. Polymer formula can be divided into three categories, according to the relative humidity of the points. Detection of relative humidity of 100%, that is, the sensor dew condensation sensor, detecting 70 ~ 100% high humidity sensor has a high humidity switch sensor, for 30 to 70% of the humidity sensor. Polymer-based humidity sensors are used to absorb the water absorption of resin and water resistance caused by changes in resistance. Although a variety of sensors have their own characteristics, but in addition to ceramic sensors