| 摘要 |
The objective of the present invention is to provide a capacitive sensor which is capable of suppressing noises from the surroundings and is not susceptible to decrease in the sensing accuracy. A capacitive sensor (1) is provided with: a sensor unit (F) which comprises a front-side electrode part (FX), a back-side electrode part (FY) that is arranged on the reverse side of the front-side electrode part (FX), and a dielectric layer (280) that is arranged between the front-side electrode part (FX) and the back-side electrode part (FY); insulating spacers (250, 251) which are respectively arranged on the front side and/or the back side of the sensor unit (F); earth electrodes (240, 241) which are respectively arranged on the outer sides of the insulating spacers (250, 251) in the front-back direction, and are grounded; and a control device (22F) which is electrically connected to the sensor unit (F) and applies a voltage to the sensor unit (F), and to which the electric quantity related to the capacitance of the sensor unit (F) is transmitted. |
