| 摘要 |
<p>PURPOSE:To furnish an attitude regulation system of a vibration sensor which executes attitude regulation of a pendulum automatically and also keeps the vibration sensor in the best state at all times. CONSTITUTION:This system is constructed of a vibration sensor 10 which is equipped with a pendulum position control mechanism 14 controlling the position of a pendulum and a pendulum position detecting mechanism 9 detecting positions of unbalance in both positive and negative directions of the pendulum, first and second time constant circuits 40 and 41 which receive detection signals of the positions of unbalance in both the positive and negative directions outputted from the pendulum position detecting mechanism 9, a gate circuit 42 which receives outputs of these time constant circuits 40 and 41 and a start signal and, moreover, a drive circuit 43 which receives outputs of the gate circuit 42 and gives the pendulum position control mechanism 14 positive and negative control outputs corresponding to the outputs of the gate circuit 42.</p> |
