| 摘要 |
<p>PURPOSE: To prevent the opening action of a door part on the home door side from being late for the opening action of a door on the car side by preparing both a time measuring means, which measures the elapsed time from the time at which a predicted time was computed, and a driving means, which drives/opens the door part on the home door side when the time measured by the time measuring means reaches the predicted time. CONSTITUTION: On the instruction from a controlling part 14, an ultrasonic wave transmitting/receiving part 13 drives/controls ultrasonic heads 11, 12 and measures the time from the emission of the ultrasonic wave to the receipt in order to input the measured values into the control part 14. Based on the measured values from the ultrasonic wave transmitting/receiving part 13, the control part 14 computes the car speed of a vehicle 5, computes the deceleration based on the speed computed, and computes the predicted time taken before the vehicle 5 stops. In addition, by using a built-in timer, (the control part 14) measures the elapsed time from the time at which a predicted time was computed and issues a driving instruction to the door driving part 15 at the instant that the time measured by the timer coincides with the predicted time. The door driving part 15 drives/opens a door part 3 of a home door 2, under the driving instruction from the control part 14.</p> |
