Humidity sensor based capacitu00c2ncia, and detection methods of moisture based capacitu00c2ncia and calibration of the humidity sensor based capacitu00c2ncia

摘要

Humidity sensor based capacitu00c2ncia, and detection methods of moisture based capacitu00c2ncia and calibration of the humidity sensor based capacitu00c2ncia.A humidity sensor based on capacitance may include a sleeve that has an internal cavity, a container filled with soil or other material inserted in the cavity, and a pair of conductive straps in the shape of a ring around the outside of the glove by forming a capacitor and providing an output of F. While making fastenings.The rings are positioned around a perimeter of the sleeve can be connected to a fixed inductor to form an oscillator with an output of variable frequency.The sensor can be calibrated from the output frequency for each of a plurality of substance, by measuring the volumetric water content for the saturation of the material, and determining at least one constant adjustment in an equation in which the content of water volume is a function d The output frequency and a plurality of constant adjustment.