PIEZOELECTRIC ACCELERATION SENSOR

摘要

PROBLEM TO BE SOLVED: To provide a piezoelectric acceleration sensor capable of setting case height low compared to a conventional amplifier-built-in type piezoelectric acceleration sensor, restricting case height increase compared to a piezoelectric acceleration sensor with a separate amplifier, and simplifying wiring of signal lines by mounting an electronic circuit board for the amplifier on a weight as a component part of the piezoelectric acceleration sensor. SOLUTION: This piezoelectric acceleration sensor is provided with a piezoelectric element 1 which generates a voltage when deformed, the weight 2 to deform the piezoelectric element 1 by inertial force, and the electronic circuit board 3 on which an electronic circuit to measure the voltage generated at the piezoelectric element 1 deformed is mounted. The electronic circuit board 3 is mounted on the weight 2.