| 摘要 |
PURPOSE: An acceleration sensor and an acceleration detect system is provided to install near on an engine of vehicle. CONSTITUTION: An acceleration sensor comprising a gain of differential booster(4,5,6) boosting a voltage output of piezo-electric device(3), controlled by temperature compensator(9) with compensation of the output temperature characteristics of piezo-electric device(3); and increase the composition capacity with piezo-electric device(3) by insert condenser(8) parallel in the piezo-electric device(3); then without inquiring a large resistance of bias resistance circuit(7); The acceleration sensor(1) is mounted in front of the vehicle, the sensor output is received by a receiver(2) in a room of the vehicle. |
