| 摘要 |
<p>PURPOSE: To cope even with a vehicle theft using a wrecker truck, a trailer or the like, and raise an alarm for a position of a stalen car by wireless even when being put in a condition where a signal from a GPS satellite cannot be received and a GPS antenna is removed. CONSTITUTION: Besides a GPS receiving part 11, a speed sensor 14 and a rate gyro 15 are mounted on respective on-vehicle devices, and a self-contained navigation function using these is realized by an operation processing part 13. When a movement of a vehicle is detected by the speed sensor 14 and the rate gyro 15 in a condition where an ignition key is turned off, the operation processing part 13 regards it as the vehicle is stolen, and transmits an alarm to show its effect to a vehicle control station by wireless by a wireless part 16 together with positional information or the like of the vehicle. In the vehicle control station which receives this alarm, informations such as a position of the vehicle, the advancing direction and a locus are visibly displayed, and a report to the police or the like is properly practiced.</p> |
