Floor-Plan Device Registration Using Signal Fingerprint Localization
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Solution Overview
Problem
Traditional building management systems face challenges in efficiently registering and authenticating distributed devices due to manual and time-consuming processes, especially in large installations, and lack mechanisms for accurately associating relative location information, leading to errors and inefficiencies.
Innovation Solution
A method that localizes devices by predicting and measuring signal fingerprints, authorizes them through a mobile device with a central panel, and registers them using a flexible sequence, allowing for accurate device positioning and authorization without requiring complete walkthroughs or precise physical presence.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If manual input and physical presence at device mounting locations are used for device registration, then device location information can be obtained, but the process becomes time consuming and inefficient
Solution Approach 1:
Devices automatically perform self-registration by broadcasting their presence and allowing the central panel to discover them autonomously. The system uses automatic device discovery mechanisms where devices send join requests and the central panel processes them without requiring manual technician intervention at each device location, thereby reducing registration time while maintaining location accuracy through automated signal fingerprinting.
Solution Approach 2:
The patent replaces manual mechanical processes (technicians physically visiting device locations) with electronic signal-based automation. The central panel uses RF signal fingerprinting and triangulation techniques to automatically determine device locations, substituting the mechanical walkthrough process with electronic discovery and localization algorithms that process signal strength data from multiple reference nodes.
2Loss of information
If reference nodes are installed throughout the building for triangulation, then relative location information can be obtained, but the process is time consuming and error prone
Solution Approach 1:
Reference nodes are pre-installed and configured in the building before device commissioning begins. The central panel is pre-loaded with reference node location data and signal characteristics. This preliminary setup allows subsequent devices to be localized through automated triangulation without requiring technicians to perform manual walkthroughs, significantly reducing the time and errors associated with location determination.
3Adaptability or versatility
If different learning and registration procedures are used for each communication technology, then device compatibility is achieved, but installer complexity increases
Solution Approach 1:
The central panel implements a universal discovery and registration mechanism that works across multiple communication technologies (RF, Wi-Fi, Bluetooth, cellular). Instead of requiring installers to learn separate procedures for each technology, the system provides a single standardized interface where devices of any type can broadcast their presence and be discovered automatically. The panel adapts to different device types internally while maintaining a consistent user experience.
Solution Approach 2:
The central panel acts as an intermediary that handles the complexity of different communication protocols internally. Devices simply need to support basic broadcast and join request capabilities, while the panel manages the technology-specific details of discovery, authentication, and registration. This mediator approach shields installers from protocol complexity while maintaining broad device compatibility.
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
This method streamlines the registration and localization of devices, reducing errors and time consumption, and enables flexible sequencing of device commissioning, improving efficiency and accuracy in device placement and system functionality.
Implementation Method 1
measuring a signal fingerprint for each device once all devices are deployed and in the actual building... Measuring the signal fingerprint for each device includes mounting the device in the building and measuring signal strength of packets exchanged with other devices mounted in the building
Data Source
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AI summary
A method of registering distributed devices includes discovering a plurality of devices at a central panel or server, localizing the devices, and authorizing the devices with a mobile device communicating with the central panel or server. The method also includes registering the devices with the central panel. The model can include verifying link quality with each of the devices before registering the devices with the central panel by comparing signal quality between each device and a central panel with a pre-defined threshold level.