To provide The present invention high sensitivity good inexpensive fit breathing detection device It has to be. A recess which is located between the ends toward the abdomen A of the subject, the reference plate 3 whose both end portions are attached to the abdomen of the subject to be supported by the abdomen, the recess of the reference plate is movably arranged with respect to the both end portions within abuts against the abdomen, the pressure receiving plate 4 which receives the pressure P from the abdomen, is interposed between said pressure receiving plate and said reference plate, from the abdomen a pressure sensor 5 for detecting the pressure applied to the pressure receiving plate, and a breathing detection device, characterized in that it comprises a. .BACKGROUND 1【課題】安価で装着感が良く高感度な呼吸検出装置を提供することにある。【解決手段】両端部の間に位置する凹部を被験者の腹部Aに向けて、その両端部が腹部に支持されるように被験者の腹部に装着される基準板3と、前記基準板の前記凹部内に前記両端部に対し移動可能に配置されて前記腹部に当接し、その腹部から圧力Pを受ける受圧板4と、前記基準板と前記受圧板との間に介挿されて、前記腹部から前記受圧板に加わる圧力を検出する圧力センサ5と、を具えることを特徴とする呼吸検出装置である。【選択図】図1
