Drop shock measurement system and acceleration sensor element used in the same

Abstract

The drop impact measuring system has i) a plurality of bimorph-type acceleration sensor containing a plurality of free vibrating sections each of which has individual draw-out electrodes; ii) a switch section for selecting output from the bimorph-type acceleration sensors; iii) an amplifying circuit for amplifying a signal applied via the switch section from the acceleration sensors; and iv) a logic circuit for logically evaluating the output from the amplifying circuit and controlling the switch section according to the result acquired from the logical evaluation.

1 . A bimorph-type acceleration sensor element, which is used for a bimorph-type acceleration sensor, comprising i) a plurality of free vibrating sections having a both-ends-supported beam structure; and ii) draw-out electrodes for drawing out a signal generated in the free vibrating sections.  
   
   
       2 . The bimorph-type acceleration sensor element of  claim 1 , wherein the plurality of the free vibrating sections are of different lengths and are electrically independent.  
   
   
       3 . The bimorph-type acceleration sensor element of  claim 1 , wherein the plurality of the free vibrating sections are of identical length and are electrically connected in parallel.