A kind of sensing head device, the signal line group being electrically connected comprising a sensor unit, the auxiliary ring of a combination what sensor unit periphery and one with the sensor unit. The sensor unit includes in the contact surface end and an output end being separately arranged. The auxiliary ring is as in hard and made by the high molecular polymer material with predetermined elasticity, and is arranged around the contact surface end periphery of the sensor unit, and is in the anchor ring portion of horizontal alignment with the contact surface end of the sensor unit including one. The signal line group is electrically connected with the output end of the sensor unit. By the setting of the auxiliary ring, when measuring impulsive motion signal with what, the compactness of the contact area and closing of the amplifiable sensing head device and human body enables the invention to stable position and is easy to capture to preferable impulsive motion signal.一種感測頭裝置，包含一感測器單元、一結合於該感測器單元周緣的輔助環件，及一與該感測器單元電連接的訊號線組。該感測器單元包括呈相間隔設置的一接觸面端，及一輸出端。該輔助環件是由呈硬質並具有預定彈性的高分子聚合物材質所製成，且是圍繞該感測器單元的接觸面端周緣設置，並包括一與該感測器單元的接觸面端呈水平對齊的環面部。該訊號線組是與該感測器單元的輸出端電連接。藉由該輔助環件的設置，當用於量測脈動訊號時，可擴增該感測頭裝置與人體的接觸面積與靠合的緊密性，使本發明能穩定定位而容易擷取到較佳的脈動訊號。
