To provide a biological signal measuring device capable of measuring a biological signal stably and accurately.SOLUTION: A biological signal measuring device 10 includes: a plurality of signal detection parts 20 for detecting a biological signal of an occupant of a vehicle； a plurality of contact state detection parts 30 connected to the plurality of signal detection parts 20 on a one-to-one basis for detecting a contact state between each of the plurality of signal detection parts 20 and the occupant； a plurality of biological signal generation parts 40 connected to the plurality of signal detection parts 20 on a one-to-one basis for subjecting a plurality of biological signals detected by the plurality of signal detection parts 20 respectively to pre-processing； a signal determination part 70 for selecting at least two effective output signals from output signals of the plurality of biological signal generation part 40 according to the contact state detected by each of the plurality of contact state detection parts 30； and a calculation part 80 for performing calculation to the effective output signals selected by the signal determination part 70.SELECTED DRAWING: Figure 1【課題】安定して高精度に生体信号を計測することができる生体信号計測装置を提供する。【解決手段】生体信号計測装置１０は、車両の搭乗者の生体信号を検出する複数の信号検出部２０と、複数の信号検出部２０のそれぞれと一対一に接続され、複数の信号検出部２０のそれぞれと搭乗者との接触状態を検出する複数の接触状態検出部３０と、複数の信号検出部２０のそれぞれと一対一に接続され、複数の信号検出部２０のそれぞれが検出した複数の生体信号を前処理する複数の生体信号生成部４０と、複数の接触状態検出部３０のそれぞれが検出した接触状態に応じて、複数の生体信号生成部４０の出力信号から少なくとも２つの有効な出力信号を選定する信号判定部７０と、信号判定部７０が選定した有効な出力信号に対して演算を行う演算部８０とを備える。【選択図】図１
