Tracking System Self-Localization via Mobile Node Multilateration
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The setup of range-based tracking systems is hindered by the need for precise location measurement of stationary nodes, requiring skilled labor and time, especially for determining the location of these nodes in a common coordinate system.
Innovation Solution
A method utilizing an independent localization system to autonomously determine the location of stationary nodes within a tracking environment by generating a map and using ranging information from mobile nodes, allowing for the deployment of stationary nodes without prior knowledge of their absolute locations, and subsequently establishing a common tracking coordinate system.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If precise location measurement of stationary nodes is performed using traditional surveying methods, then location accuracy is improved, but setup time and skill requirements increase
Solution Approach 1:
The system performs self-localization by having mobile nodes autonomously determine the positions of stationary nodes through wireless signal exchanges and multilateration calculations, eliminating the need for external surveying equipment and skilled operators to perform traditional location measurements
Solution Approach 2:
Instead of using stationary nodes to measure mobile node positions (traditional approach), the patent inverts the process by using mobile nodes to measure and determine the positions of stationary nodes, enabling rapid system deployment without traditional surveying
2Measurement precision
If traditional surveying methods are used to determine stationary node locations, then location precision is improved, but device complexity and skill requirements increase
Solution Approach 1:
The tracking system automatically performs its own setup by having mobile nodes autonomously calculate stationary node positions through wireless signal measurements and multilateration, eliminating the need for external total stations or surveying equipment
Solution Approach 2:
The patent replaces mechanical surveying equipment (total stations, theodolites) with wireless signal-based electronic measurements, substituting physical measurement tools with electromagnetic field-based ranging methods
3Manufacturing precision
If manual location measurement is performed, then coordinate system establishment is improved, but productivity decreases
Solution Approach 1:
The system automatically establishes the tracking coordinate system through multilateration calculations performed by mobile nodes, which independently determine stationary node positions and generate the coordinate framework without manual intervention
Solution Approach 2:
Mobile nodes perform location measurements and coordinate system establishment as preliminary actions before actual tracking begins, enabling the system to be rapidly deployed and operational without requiring subsequent setup adjustments
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 rapid and minimally invasive deployment of tracking systems, reducing manual intervention and facilitating efficient tracking of mobile nodes, suitable for emergency scenarios and dynamic environments.
Implementation Method 1
the measurement of time of arrival (TOA)
Data Source
Figure 1
Figure 2
Figure 3
AI summary
A method of setting up a tracking system of the type including a plurality of spaced-apart stationary nodes for tracking mobile nodes within a tracking environment, the method including using an independent localisation system to determine respective locations of at least a subset of the stationary nodes within the tracking environment.