Vehicle location device
First Claim
1. A detection device, said device comprising:
- a receiver, the receiver determining intensity of a homing-signal transmitted from a vehicle and received at the device;
an inertial-measurement-unit, the inertial-measurement-unit determining a distance the device is moved;
an electronic-compass, the electronic-compass determining a heading in which the device is moving; and
a controller-circuit in communication with the receiver, the inertial-measurement-unit, and the electronic-compass, the controller-circuit determining a first-range between a first-position of the device and the vehicle based on a first-intensity of the homing-signal;
in accordance with the determination of the first-range, the controller-circuit determining whether the device has moved to a second-position based on a first-distance and a first-heading;
in accordance with the determination that the device has moved to the second-position, the controller-circuit determining a second-range between the second-position and the vehicle based on a second-intensity of the homing-signal;
in accordance with the determination of the second-range, the controller-circuit determining whether the device has moved to a third-position based on the a second-distance and a second-heading;
in accordance with the determination that the device has moved to the third-position, the controller-circuit determining a third-range between the third-position and the vehicle based on a third-intensity of the homing-signal;
whereinthe controller-circuit determines a travel-distance and a travel-direction from the device to the vehicle based on the first-range, the second-range, the third-range, the first-distance, the second-distance, the first-heading, and the second-heading.
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Accused Products
Abstract
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.
42 Citations
23 Claims
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1. A detection device, said device comprising:
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a receiver, the receiver determining intensity of a homing-signal transmitted from a vehicle and received at the device; an inertial-measurement-unit, the inertial-measurement-unit determining a distance the device is moved; an electronic-compass, the electronic-compass determining a heading in which the device is moving; and a controller-circuit in communication with the receiver, the inertial-measurement-unit, and the electronic-compass, the controller-circuit determining a first-range between a first-position of the device and the vehicle based on a first-intensity of the homing-signal; in accordance with the determination of the first-range, the controller-circuit determining whether the device has moved to a second-position based on a first-distance and a first-heading; in accordance with the determination that the device has moved to the second-position, the controller-circuit determining a second-range between the second-position and the vehicle based on a second-intensity of the homing-signal; in accordance with the determination of the second-range, the controller-circuit determining whether the device has moved to a third-position based on the a second-distance and a second-heading; in accordance with the determination that the device has moved to the third-position, the controller-circuit determining a third-range between the third-position and the vehicle based on a third-intensity of the homing-signal;
whereinthe controller-circuit determines a travel-distance and a travel-direction from the device to the vehicle based on the first-range, the second-range, the third-range, the first-distance, the second-distance, the first-heading, and the second-heading. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A detection method, said method comprising:
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determining an intensity of a homing-signal transmitted from a vehicle, with a receiver installed in a device; determining a distance the device is moved, with an inertial-measurement-unit installed in the device; determining a heading in which the device is moving, with an electronic-compass installed in the device; determining, with a controller-circuit in communication with the receiver, the inertial-measurement-unit, and the electronic-compass, a first-range between a first-position of the device and the vehicle based on a first-intensity of the homing-signal; in accordance with the determination of the first-range, determining with the controller-circuit whether the device has moved to a second-position based on a first-distance and a first-heading; in accordance with the determination that the device has moved to the second-position, determining with the controller-circuit a second-range between the second-position and the vehicle based on a second-intensity of the homing-signal; in accordance with the determination of the second-range, determining with the controller-circuit whether the device has moved to a third-position based on the a second-distance and a second-heading; in accordance with the determination that the device has moved to the third-position, determining with the controller-circuit a third-range between the third-position and the vehicle based on a third-intensity of the homing-signal; and determining with the controller-circuit a travel-distance and a travel-direction from the device to the vehicle based on the first-range, the second-range, the third-range, the first-distance, the second-distance, the first-heading, and the second-heading. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21, 22, 23)
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Specification