对电容式湿度传感器的“输出限幅”现象进行了较为细致的分析,阐明了产生“输出限幅”现象的原因,定义了“物理短路”和“品质下降”两个阶段, 并给出了相应的预防措施。 关键词: 电容式湿度传感器; 湿敏电容器; 输出限幅 Abstract : The phenomenon on“output for violent change”of capacitive polymer humidity sensor and the rea2 sons are discussed. The two gradations of“physics shot”“character down”are defined. The relerant preventing method is given. Key words : capacitive humidity sensor ; humidity sensiting capacity ; output violent change