Sub-GHz Item Tracking With Satellite Switching Across Varying Distances
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Solution Overview
Problem
Conventional tracking systems struggle to efficiently track items that move across large distances and between different geographical areas while maintaining power efficiency, particularly for devices with limited battery capacity.
Innovation Solution
A tracking device equipped with sub-GHz non-cellular wireless communication circuitry for peer-to-peer communication and satellite navigation, switching to satellite communication when out of range, to facilitate location tracking across varying distances.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional tracking systems are used to track items across large distances, then location tracking capability is improved, but power consumption increases significantly
Solution Approach 1:
The tracking system segments the communication range into two distinct zones: a short-range peer-to-peer communication zone for local tracking and a long-range satellite communication zone for distant tracking. This segmentation allows the system to use low-power peer-to-peer communication for most scenarios while reserving high-power satellite communication only when necessary, thereby reducing overall power consumption while maintaining comprehensive location tracking capability.
Solution Approach 2:
The tracking device dynamically switches between peer-to-peer communication mode and satellite communication mode based on the distance to and availability of the electronic device. This dynamic adaptation allows the system to optimize power consumption by using the lower-power peer-to-peer mode when possible and switching to satellite mode only when the item is out of range, thus resolving the contradiction between tracking capability and power consumption.
2Use of energy by moving object
If peer-to-peer wireless communication is used for location tracking, then power efficiency is improved, but tracking range is limited
Solution Approach 1:
The tracking device incorporates both peer-to-peer wireless communication circuitry and satellite wireless communication circuitry, enabling it to perform multiple tracking functions across different ranges. The peer-to-peer circuitry provides power-efficient short-range tracking, while the satellite circuitry provides long-range tracking capability. This multi-functionality allows the system to achieve both power efficiency and extended tracking range by selecting the appropriate communication mode based on distance.
3Adaptability or versatility
If satellite communication is used to extend tracking range, then tracking distance is improved, but power consumption increases
Solution Approach 1:
The system applies partial action by using low-power peer-to-peer communication for the majority of tracking scenarios where the item is within range of the electronic device. Satellite communication is activated only partially when the item exceeds the peer-to-peer range, rather than continuously. This partial activation of the higher-power satellite mode only when necessary allows the system to achieve extended tracking distance while minimizing overall power consumption.
Data Source
AI summary
A tracking device may be coupled to an item for location tracking. Non-cellular wireless communication circuitry of the tracking device may convey location information to an electronic device for output to a user in tracking the location of the tracking device. Different types of non-cellular wireless communication circuitry, including sub-GHz wireless communication circuitry, may convey location information in different manners to the electronic device to guide the user in finding the tag and the tagged item.