| 摘要 |
PURPOSE:To make it possible to simply know the vibration acceleration speed of a vehicle, by providing an up-and-down direction acceleration detector and a left- and-right direction acceleration detector so as to place both of them on the floor surface or window frame of the vehicle. CONSTITUTION:The vibration acceleration of a vehicle in an up-and-down direction detected by an up-and-down direction acceleration detector 1v is passed through an amplifier 2v and a filter 3v and the absolute value thereof is taken by an absolute value circuit 4v. In this case, the max. value of the absolute value is held by an up-and-down direction peak hold circuit 5v. Similarly, the vibration acceleration of the vehicle in a left-and-right direction detected by a left- and-right direction acceleration detector 1h is applied to an absolute value circuit 4h through an amplifier 2h and a filter 3h and the absolute value thereof is taken by said circuit 4h and the max. value of this absolute value is held by a left-and-right direction peak hold circuit 5h. The outputs of the circuits 5v, 5h are converted by an A/D converter 7 and latched by a latch circuit 8. The outputs of the latch circuit 8 are changed over by a display change-over circuit 19 and respectively displayed as the max. values of the above mentioned vibration accelerations. |
