Access Control Location Mapping via RSSI and GPS
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Solution Overview
Problem
Existing access control systems face difficulties in determining the location of access controls relative to other rooms, particularly when using mobile devices for unlocking purposes.
Innovation Solution
A method that involves detecting wireless signals, determining the received signal strength indicator (RSSI), calculating distances between mobile devices and access controls, and using GPS and background noise to accurately map the location of access controls, allowing for the generation of maps depicting their relative positions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If access control systems use mobile devices for unlocking rooms, then ease of operation is improved, but ability to determine location of access controls relative to other rooms deteriorates
Solution Approach 1:
The patent introduces wireless signals (Bluetooth, Wi-Fi) and GPS technology as intermediary elements between the mobile device and the access control system. These intermediaries enable location tracking without requiring direct line-of-sight or physical contact, thus maintaining ease of operation while solving the location determination problem. The mobile device acts as a mediator that carries location information between the user and the access control points.
Solution Approach 2:
The patent replaces traditional mechanical location determination methods (physical keys, manual room number entry) with electronic and electromagnetic systems. GPS satellites provide global location data, while Bluetooth and Wi-Fi signals provide indoor positioning capabilities. This substitution eliminates the need for users to manually input location information, maintaining ease of operation while enabling automatic location tracking for access control.
2Device complexity
If access control locations are manually configured, then device complexity is reduced, but productivity of installation and rearrangement deteriorates
Solution Approach 1:
The access control system performs self-configuration by automatically detecting the locations of access control points and mapping their relative positions. The system uses wireless signal strength measurements and GPS data to autonomously determine spatial relationships without requiring manual intervention from installers. This self-service capability dramatically improves installation productivity while keeping device complexity manageable through automated algorithms.
Solution Approach 2:
The system performs preliminary location mapping during the installation phase by having users walk through the facility with mobile devices. This preliminary action collects location data that is then processed to create a complete spatial map of all access control points. Subsequent rearrangements can be handled more efficiently by updating this pre-established framework, improving overall installation and modification productivity.
3Measurement precision
If multiple wireless signals are used for location determination, then measurement precision is improved, but device complexity increases
Solution Approach 1:
The patent merges multiple location determination technologies (GPS, Bluetooth, Wi-Fi) into a unified access control system. These different signal sources are combined and processed together to achieve accurate indoor positioning. The system integrates data from multiple wireless signals and uses algorithms to fuse this information, improving measurement precision while managing device complexity through unified processing 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 precise tracking and mapping of access control locations, facilitating efficient installation, rearrangement, and user navigation within access control systems.
Implementation Method 1
determining a received signal strength indicator (RSSI) of the first wireless signal; determining a distance between a mobile device and a first access control in response to the RSSI of the first wireless signal
Implementation Method 2
the location of the mobile device is determined using at least one of GPS and RSSI of wireless signals between the mobile device and a wireless access protocol device having a known location
Data Source
AI summary
A method of determining a location of one or more access controls utilizing an individual carrying a mobile device is provided. The method including: detecting a first wireless signal; determining a received signal strength indicator (RSSI) of the first wireless signal; determining a distance between a mobile device and a first access control in response to the RSSI of the first wireless signal; determining a location of the mobile device when the first wireless signal is detected; and determining a location of the first access control in response to the location of the mobile device and the distance between the mobile device and the first access control.