RFID Tag Location Data for Mobile Reader Guidance
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Solution Overview
Problem
Existing RFID technologies lack effective methods for determining the location of mobile RFID readers and guiding users between fixed RFID tags, especially in environments where direct line of sight is not required.
Innovation Solution
The system uses stationary RFID tags with stored location information to determine the location of a mobile RFID reader and guide users by transmitting and receiving radio frequency signals, allowing the reader to detect and interpret location data from multiple tags to navigate between them.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If stationary RFID tags are used at fixed locations, then location determination of mobile RFID readers is enabled, but the system complexity increases due to infrastructure requirements
Solution Approach 1:
Each RFID tag stores its own location information and location information of other tags, making the tags self-sufficient data sources. The tags automatically provide navigation data without requiring external database queries or complex centralized systems, enabling the mobile reader to determine location and routes independently
Solution Approach 2:
Location information and routing data are pre-stored in the RFID tags before deployment. This preliminary action eliminates the need for real-time data retrieval from external systems during location determination, simplifying the operational complexity of the system
2Ease of operation
If RFID tags store location information of multiple other tags, then user guidance between locations is enabled, but the information storage requirements and data management complexity increase
Solution Approach 1:
Each RFID tag is designed to serve multiple functions: it stores its own location information, location information of other tags, and provides routing data. This multi-functionality allows any detected tag to provide comprehensive navigation information, eliminating the need for specialized server infrastructure
Solution Approach 2:
The patent combines multiple information types (own location, other tags' locations, routing data) into a single RFID tag structure. This merging consolidates what would otherwise require separate databases and retrieval systems into self-contained tags, simplifying the overall information management architecture
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables accurate location determination and user guidance in environments without direct line of sight, enhancing asset tracking and navigation efficiency by utilizing RFID tags to provide location and route information.
Implementation Method 1
The RFID reader typically converts the radio waves reflected back from the RFID tag into digital information
Implementation Method 2
Passive tags do not require an internal power source, and are powered by an electrical current induced from the RF signal transmitted by an RFID reader
Data Source
AI summary
A method and system for location determination and guidance using radio frequency identification (RFID) are disclosed. A location of a mobile RFID reader can be determined by detecting stationary RFID tags located at fixed locations. Each RFID tag stores location information associated with its position as well as location information of at least one other RFID tag. The location information stored by each RFID tag can be used to direct a user from one RFID tag to another. Thus, RFID technology is also used to guide mobile RFID reader between the fixed locations of the stationary RFID tags.