| 摘要 |
<p>piezo-electric acceleration sensor, including: a piezo-electric polymer membrane element having an element through hole; a diaphragm having a diaphragm through hole and attached to the piezo-electric membrane element so that the diaphragm hole is concentric to the element through hole to form a laminate with a laminate through hole; and a fixing mechanism, having a sensing hole, for fixing the laminate in a stretched manner, and wherein: the laminate through hole has about 2.25 to about 80% of the area of the sensing hole; and the diaphragm and the piezo-electric element meet the equation: (Eb x Tb<3>) / (Ep x Tp<3>) >/= about 5 where Eb, Tb, Ep and Tp are Young's modulus and thickness of the diaphragm and Young's modulus and thickness of the piezo-electric element, respectively, whereby acceleration, applied to the diaphragm, is detected based on a quantity of electricity generated due to strains in a piezo-electric element.</p> |
