System and method for situational awareness
First Claim
1. A method of determining the location of a person relative to a vehicle, comprising:
- associating a first device comprising a Bluetooth transceiver with the person by providing identification of the person to a computer system through a log-in process performed on the first device;
associating a second device comprising a Bluetooth transceiver with the vehicle;
detecting a Bluetooth radio link between the first and second transceivers, wherein the link is indicative of a status, based on measured rf signal strength, as to whether the first device is within a predeterminable distance from the second device;
determining whether the rf signal strength of a signal received by one device from the other device via the Bluetooth radio link has diminished below a predetermined level; and
if the rf signal strength of the signal received by the one device from the other device via the Bluetooth radio link has diminished below a predetermined level, providing a notification to a computer system via wireless data communication, that status has changed from a first link status wherein the first device is within a predeterminable distance from the second device to a second link status wherein the first device is beyond the predeterminable distance from the second device.
1 Assignment
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Accused Products
Abstract
A method for determining location of a person relative to a vehicle. A first device comprising a Bluetooth transceiver is associated with the person, and a second device comprising a Bluetooth transceiver is associated with the vehicle. The method includes determining whether the strength of a signal received by one device from the other device via has diminished below a predetermined level, in which case a notification is provided to a computer system via wireless data communication that the status has changed from a first link status wherein the first device is within a predeterminable distance from the second device to a second link status wherein the first device is beyond the predeterminable distance from the second device.
19 Citations
21 Claims
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1. A method of determining the location of a person relative to a vehicle, comprising:
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associating a first device comprising a Bluetooth transceiver with the person by providing identification of the person to a computer system through a log-in process performed on the first device; associating a second device comprising a Bluetooth transceiver with the vehicle; detecting a Bluetooth radio link between the first and second transceivers, wherein the link is indicative of a status, based on measured rf signal strength, as to whether the first device is within a predeterminable distance from the second device; determining whether the rf signal strength of a signal received by one device from the other device via the Bluetooth radio link has diminished below a predetermined level; and if the rf signal strength of the signal received by the one device from the other device via the Bluetooth radio link has diminished below a predetermined level, providing a notification to a computer system via wireless data communication, that status has changed from a first link status wherein the first device is within a predeterminable distance from the second device to a second link status wherein the first device is beyond the predeterminable distance from the second device. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A non-transitory computer readable medium containing program instructions representing software executable in a first portable device comprising a processor and a first Bluetooth transceiver, which instructions, when executed by the processor, cause the first portable device to perform method steps for determining the location of a person relative to a vehicle, comprising:
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identifying a Bluetooth signal transmitted from a second portable device included in a set of pre-identified devices; identifying a first condition in which, based on strength of a rf signal received by the first device from the second device, a breakable link exists between the first and second devices, the rf signal having at least a predetermined minimum signal strength as measured by the first device; determining if the link is broken based on a drop in strength of the rf signal to a level below the predetermined minimum signal strength; providing a first notification to a computer system when a determination is made that the link is broken; and after determining that the link is broken, determining whether the link once more exists between the first and second devices based on strength of the rf signal received by the first device from the second device, as measured by the first device, being at least the predetermined minimum signal strength. - View Dependent Claims (14, 15, 16, 17)
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18. A non-transitory computer readable medium containing program instructions representing software executable in a first portable device comprising a processor and a first Bluetooth transceiver, which instructions, when executed by the processor, cause the first portable device to perform method steps for determining whether a user of the first portable device has moved away from a vehicle, comprising:
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identifying a Bluetooth signal transmitted from a second portable device included in a set of pre-identified devices with a Bluetooth sensor in the first portable device, wherein the set comprises multiple devices each positioned at a vehicle; measuring RSSI data values of the signal received with the Bluetooth sensor of the first portable device; identifying a first condition when a measured RSSI data value is at least a defined minimum value; identifying a second condition when a measured RSSI data value is below the defined minimum value; when the first condition exists, setting a flag indicative that the user of the first portable device is at or in the vehicle and when the second condition exists, setting a flag indicative that the user of the first portable device has moved away from the vehicle. - View Dependent Claims (19, 20, 21)
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Specification