PROBLEM TO BE SOLVED: To more sensitively detect a biological signal with a small amplitude than a conventional detecting apparatus.SOLUTION: The biological signal detecting apparatus includes a mechanical amplifying device including a three-dimensional solid knitted substance 10 and sheet-like foam bodies 21 and 22 layered in the periphery of the three-dimensional knitted object, or more preferably, the mechanical amplifying device having a film 16 disposed between the three-dimensional solid knitted substance 10 and the sheet-like foam bodies 21 and 22, and a vibration sensor 30 is attached to the mechanical amplifying device. The microvibration on the body surface caused by biological signals of the living body such as heartbeat, respiration and fluctuation of the atria and the aortas is propagated to the sheet-like foam bodies 21, 22, the film 16 and the three-dimensional knitted substance 10. Film vibration is generated in the sheet-like foam bodies 21, 22 and the film 16, while string vibration is generated in the three-dimensional knitted substance 10. With this structure, the biological signals such as the heartbeat, respiration and fluctuation of the atria and the aortas can be accurately propagated.COPYRIGHT: (C)2011,JPO&INPIT【課題】 振幅の小さな生体信号を従来よりも感度良く検出する。【解決手段】三次元立体編物10と三次元立体編物の周辺に積層される板状発泡体21,22とを備えた機械的増幅デバイス、好ましくは、三次元立体編物10と板状発泡体21,22との間にフィルム16が配設された機械的増幅デバイスを有し、この機械的増幅デバイスに振動センサ30が取り付けられた構成である。心拍、呼吸、心房や大動脈の揺動などの人の生体信号による体表面の微小振動は、板状発泡体21,22、フィルム16及び三次元立体編物10に伝播されるが、板状発泡体21,22及びフィルム16では膜振動を生じ、三次元立体編物10には糸の弦振動を生じる。これにより、心拍、呼吸、心房や大動脈の揺動などの生体信号を正確に伝えることができる。【選択図】 図1
