NFC Tag Mapping for Underground Navigation
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Solution Overview
Problem
Mobile devices cannot provide accurate mapping in underground or shielded environments where GPS signals are unavailable, such as underground parking garages, making it difficult for users to locate their vehicles.
Innovation Solution
The use of fixed-location NFC tags and a mobile device equipped with a tag reader, Wi-Fi router, and map data server allows users to read tags, obtain map data, and display a map of the environment, enabling location tracking and navigation within these areas.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If GPS-based mapping systems are used, then mapping precision is improved, but they cannot function in underground or shielded environments where GPS signals are blocked
Solution Approach 1:
The patent introduces NFC tags as intermediary objects placed at specific locations in the environment. These tags serve as mediators between the mobile device and the physical space, allowing the device to determine its location by reading tag data without requiring GPS signals. This resolves the contradiction by providing an alternative positioning mechanism that works in shielded environments while maintaining mapping functionality.
Solution Approach 2:
The patent replaces the GPS satellite-based electromagnetic signal system with a local NFC-based identification system. Instead of relying on distant satellite signals that cannot penetrate underground structures, the system uses near-field communication with locally placed tags. This substitution enables location tracking in environments where the original GPS system is ineffective.
2Measurement precision
If NFC tags are placed throughout the environment, then location tracking accuracy is improved, but device complexity and infrastructure requirements increase
Solution Approach 1:
The patent employs NFC tags, which are inexpensive, simple objects that can be easily deployed throughout the environment. These tags require minimal infrastructure and can be placed on existing surfaces without complex installation procedures. The simplicity and low cost of NFC tags allow for high-density deployment to improve location accuracy without proportionally increasing system complexity.
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 precise location tracking and mapping in underground environments, allowing users to find their parked vehicles and navigate within complex structures by displaying maps that show the location of read tags, improving user experience and convenience.
Implementation Method 1
The mobile device includes a tag reader capable of reading the NFC tags.
Data Source
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AI summary
A method for providing location information such as a map in an underground or shielded environment entails storing first near-field communication (NFC) data obtained by reading a first NFC tag at a first location, reading a second NFC tag at a second location, obtaining map data for an area encompassing the first and second locations, and displaying a map showing the first location and the second location.