POWER MANAGEMENT IN WIRELESS TRACKING DEVICE OPERATING WITH RESTRICTED POWER SOURCE
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Accused Products
Abstract
A wireless tracking device operating in at least two modes to reduce power consumption and extend the operable period of the wireless tracking device. In an active mode, the wireless tracking device samples sensor signals at a higher resolution and may also actively communicate with a remote device via wireless connection. In a hibernation mode, most of the components or modules in the wireless tracking device are shut down to reduce power consumption. The wireless tracking device may switch to the active mode When a predetermine event is detected.
8 Citations
54 Claims
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1-20. -20. (canceled)
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21. A wireless tracking device, comprising:
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a locating device configured to determine a geographic location of the wireless tracking device; a sensor configured to generate a signal representing a characteristic associated with the wireless tracking device; at least one controller coupled to the location device, the at least one controller configured to; generate a message indicating the geographic location of the wireless tracking device or the condition or property associated with the wireless tracking device; set the wireless tracking device in the first mode; and switch the wireless tracking device from the first mode to a second mode, wherein the second mode consumes more power than the first mode increases the sensitivity of the sensor; and a communication module operable in the second mode but not the first mode, and configured to send the message via a wireless network. - View Dependent Claims (22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34)
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35. A method of operating a wireless tracking device, comprising:
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setting the wireless tracking device in a first mode; switching the wireless tracking device to a second mode at a predetermined time; when in the second mode, (a) determining a geographic location of the wireless tracking device; (b) generating a message indicating the geographic location; and (c) sending the message via a wireless network; and maintaining the wireless tracking device in the second mode in response to receiving a signal from a sensor indicating a change in a characteristic associated with the wireless tracking device; wherein the second mode consumes more power than the first mode and increases the sensitivity of the sensor. - View Dependent Claims (36, 37, 38, 39, 40, 41, 42, 43, 44)
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45. A non-transitory computer-readable storage medium structured to store instructions executable by a processor in a wireless tracking device, the instructions, when executed cause the processor to:
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set the wireless tracking device in a first mode; switch the wireless tracking device to a second mode at a predetermined time; when in the second mode, (a) determine a geographic location of the wireless tracking device; (b) generate a message indicating the geographic location; and (c) send the message via a wireless network; and maintain the wireless tracking device in the second mode based on signal from a sensor indicating a change in a characteristic associated with the wireless device; wherein the second mode consumes power differently increases the sensitivity of the sensor as compared to the first mode. - View Dependent Claims (46, 47, 48, 49, 50, 51, 52, 53, 54)
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Specification