PROBLEM TO BE SOLVED: To provide a pressure and humidity detection device in which the configuration is simplified by suppressing the sensor number.SOLUTION: A pressure and humidity detection device of detecting the pressure change and humidity change in a vehicle seat includes: a cloth sensor which detects pressure and humidity in a vehicle seat as the electrostatic capacitance of an induction point; and a determination part which determines that the prescribed pressure change occurs in the vehicle seat and the prescribed humidity change occurs in the vehicle seat on the basis of the electrostatic capacitance detected by the cloth sensor. The determination part determines that the prescribed pressure change occurs on the basis of the fact that the total sum of the electrostatic capacitances of one or more prescribed induction points is changed at the time change rate having an absolute value exceeding a threshold, and determines that the prescribed humidity change occurs on the basis of the fact that the total sum of the electrostatic capacitances is changed at the time change rate having the absolute value equal to or less than the threshold.SELECTED DRAWING: Figure 1
【課題】センサ数が抑制されて構成が簡略化された圧湿検出装置を提供する。【解決手段】車両シートにおける圧力変化および湿度変化を検出する圧湿検出装置であって、車両シートにおける圧力および湿度を感応点の静電容量として検出する布センサと、布センサにより検出された静電容量に基づき、車両シートにおいて所定の圧力変化が生じたこと、および、車両シートにおいて所定の湿度変化が生じたことを判定する判定部とを備え、判定部は、1以上の所定の感応点の静電容量の総和が、閾値を超える絶対値を有する時間変化率で変化したことに基づいて、所定の圧力変化が生じたと判定し、静電容量の総和が、閾値以下の絶対値を有する時間変化率で変化したことに基づいて、所定の湿度変化が生じたと判定する。【選択図】図1
PRESSURE AND HUMIDITY DETECTION DEVICE
圧湿検出装置
2017-07-20
Patent
Electronic Resource
Japanese