| 摘要 |
<p>PURPOSE:To record the operating data accurately by automatically judging start or arrival on the basis of the combination of the take-a-seat/leave-a-seat condition and stop/travelling condition, and recording the operating data during this time. CONSTITUTION:A speed pulse 11 generated by a speed sensor 10 is sent to a computing unit 30. In the computing unit 30, a count value counted by a pulse counter 31 and a value memorized in a travelling distance resister 33 are added, and the added value is memorized in the resister 33 for renewal, and the counter 31 is reset at '0' by a CPU 36. Next, the operating data including the cumulative travelling data memorized in the resistor 33 and the instrumentation data by a timer 34 is recorded by a data recording unit 20. At this stage, start or arrival of a vehicle in the operating pattern is judged on the take-a-seat/leave-a-seat condition displayed by a seat switch 1 and the travelling/ stop condition displayed by a hand brake switch 3, and the start or the arrival is recorded by the data recording unit 20.</p> |
