Capacity type humidity sensor and garbage processing method thereof

一种电容类型的湿度传感器，其具有能够精确地检测含水量的能力，这种传感器包括有一个具有电绝缘壁的传感器机壳，一对放置在所述传感器机壳上的电极，和一电路单元，电绝缘壁的外表面面对要检测其含水量的空间，在电绝缘壁的内表面，至少形成一个电极，这些电极之间形成的电场被用作湿度检测区域，这个电路单元包括一个电容检测电路，用于检测这些电极之间的电容值，该电容值随着湿度检测区域内的含水量不同而变化，还有一个输出电路，用于根据电容检测电路检测到的电容值提供一个对应于含水量的电信号。 A capacitance type moisture sensor having the capability of accurately detecting amounts of water is provided. This sensor comprises a sensor housing having an electrically-insulating wall, a pair of electrodes disposed on the sensor housing, and a circuit unit. An outer surface of the electrically-insulating wall faces a space where the amounts of water should be detected. On an inner surface of the electrically-insulating wall, at least one of the electrodes is formed. An electric field developed between the electrodes is defined as a moisture detecting region. The circuit unit includes a capacitance detecting circuit for detecting a capacitance value between the electrodes, which changes in response to the amounts of water in the moisture detecting region, and an output circuit for providing an electrical signal corresponding to the amounts of water according to the capacitance value detected by the capacitance detecting circuit.