| 摘要 |
PURPOSE:To form a vibration sensor that can detect vibration stably at high sensitivity by winding a polymer film on a solid core material and holding it by a thin metallic plate. CONSTITUTION:The film fixing structure is made by winding the end of a polymer film 1 on the solid core material and holding it by the end of a thin metallic plate 2 to wind it. Preferable polymer film 1 is a piezoelectric polymer film such as a polarized vinylidene polyfluoride film, etc. Especially, ti is preferable to use it in form of a piezoelectric film element 10 provided with an electrode film made of Al, Ni, Cu, Cr, etc., having 0.01-5mum in thickness made by vapor deposition, coating of conductive paint, etc., on both sides of a piezoelectric polymer film 1a to form a vibration sensor.
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