| 摘要 |
PROBLEM TO BE SOLVED: To prevent automatic lock of a door when there are any passengers, by correctly detecting any remaining passengers, without using any equipment used for detecting passengers only.SOLUTION: Tire inflation pressure and wheel load are acquired on the basis of detection signals from a pressure sensor 11 and vibration detection element 12 provided in a tire-side device 1. On the basis of these, the presence or absence of any passengers is determined. If there are any passengers, automatic locking is prevented when a driver gets off the vehicle. The tire-side device 1 and a receiver 21 are basically used for detecting tire inflation pressure. By using each configuration for detecting this tire inflation pressure, it is possible to determine the presence or absence of any passengers under automatic lock control exerted when a driver gets off the vehicle. Accordingly, equipment can be shared, and the need for equipment used for only detecting passengers is eliminated.SELECTED DRAWING: Figure 1 |
