PROBLEM TO BE SOLVED: To provide a capacitive occupant detection apparatus configured to improve occupant detection accuracy, while reducing the influence of a ground conductor or a ground device.SOLUTION: A capacitive occupant detection sensor includes: an electrostatic sensor 1 having a main electrode 11; a reference electrode 3 to which a reference potential is applied; a signal application section 21 for applying a detection signal to the main electrode 11; a first signal detection section 22 which detects a main signal value, which is a current value or a voltage value of the main electrode 11; and a determination section 24 which determines an occupant, on the basis of the detection signal and the main signal value. The capacitive occupant detection sensor includes a ground conductor 41 connected to the reference potential, and a second signal detection section 23 which detects a conductor signal value, which is a current value or a voltage value of the ground conductor 41. The determination section 24 determines an occupant, on the basis of the detection signal, the main signal value, and the conductor signal value.
【課題】接地導体又は接地機器の影響を抑制し、乗員判別精度を向上させることができる静電容量式乗員検知装置を提供する。【解決手段】本発明は、メイン電極11を備える静電センサ1と、基準電位が与えられた基準電極3と、メイン電極11に検出信号を印加する信号印加部21と、メイン電極11の電流値又は電圧値であるメイン信号値を検出する第一信号検出部22と、検出信号及びメイン信号値に基づいて乗員を判別する判別部24と、を備える静電容量式乗員検知センサであって、基準電位に接続された接地導体41と、接地導体41の電流値又は電圧値である導体信号値を検出する第二信号検出部23と、を備え、判別部24は、検出信号、メイン信号値、及び導体信号値に基づいて乗員を判別することを特徴とする。【選択図】図3
CAPACITIVE OCCUPANT DETECTION APPARATUS
静電容量式乗員検知装置
2015-10-22
Patent
Elektronische Ressource
Japanisch
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