Vehicle location device

摘要

A detection device includes a receiver, an inertial-measurement-unit, an electronic-compass, and a controller-circuit. The receiver determines intensity of a homing-signal transmitted from a vehicle and received at the device. The inertial-measurement-unit determines a distance the device is moved. The electronic-compass determines a heading in which the device is moving. The controller-circuit is in communication with the receiver, the inertial-measurement-unit, and the electronic-compass. The controller-circuit determines a first-range between a first-position of the device and the vehicle. The controller-circuit determines that that the device has moved to a second-position based on a first-distance and a first-heading. The controller-circuit determines a second-range between the second-position and the vehicle. The controller-circuit determines that the device has moved to a third-position based on a second-distance and a second-heading. The controller-circuit determines a third-range between the third-position and the vehicle. The controller-circuit determines a travel-distance and a travel-direction from the device to the vehicle.