Geo-fence Definition via Sensor Fusion and Multilateration
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Solution Overview
Problem
Existing geo-fencing technologies rely on outdated maps and lack an interactive, multidimensional environment for creating virtual barriers, which limits their effectiveness in providing real-time security alerts.
Innovation Solution
A geo-fence system utilizing user equipment with GPS and location-aware devices to define and monitor virtual boundaries, sending notifications to a server when crossed, allowing for customizable alerts based on user preferences without requiring a separate user equipment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional map-based geo-fence creation is used, then users can define virtual barriers, but the maps are outdated and do not provide real-time interactive environment
Solution Approach 1:
The patent transitions from 2D static map-based geo-fence creation to 3D point-cloud-based virtual boundary definition. By utilizing depth information from time-of-flight sensors and structured light, the system creates multidimensional geo-fences that accurately represent the physical environment's vertical and depth dimensions, resolving the contradiction between boundary accuracy and real-time environmental representation
Solution Approach 2:
The patent replaces traditional GPS-based mechanical positioning with optical sensing systems (time-of-flight sensors, structured light projectors). This substitution enables real-time, high-precision environmental mapping and geo-fence creation without relying on outdated map data, achieving both accuracy and real-time capability
2Measurement precision
If GPS-only tracking is used, then location can be determined, but precision is insufficient for accurate geo-fence breach detection
Solution Approach 1:
The patent merges multiple location determination technologies (GPS, cellular multilateration, triangulation) into a unified tracking system. This combination allows the system to achieve high measurement precision through sensor fusion while managing complexity through integrated architecture that coordinates all positioning methods working together
Solution Approach 2:
The patent introduces a server as an intermediary that processes location data from multiple sources and determines geo-fence breach events. This mediator coordinates the complex interactions between GPS, cellular tracking, and point-cloud data, simplifying the overall system architecture while maintaining high precision through centralized data fusion
3Adaptability or versatility
If basic geo-fence crossing alerts are sent, then breach notification is provided, but customizable warnings based on user preferences are not available
Solution Approach 1:
The patent implements preliminary action by allowing users to pre-configure their alert preferences, notification methods, and response protocols before geo-fence breaches occur. The server stores these customization parameters and automatically applies them when breaches are detected, providing adaptability without adding operational complexity during critical moments
Solution Approach 2:
The notification system is designed with multi-functionality to handle various alert types, delivery methods, and customization scenarios through a single unified platform. The server can send different types of warnings (SMS, email, push notifications) based on user preferences, achieving versatility while maintaining manageable system complexity through standardized protocols
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, real-time monitoring and alerting of geo-fence breaches, enhancing security and usability by integrating GPS, cellular multilateration, and triangulation for accurate location tracking and customizable warnings.
Implementation Method 1
The GPS receiver 342 receives and processes signals from GPS satellites (e.g., 170 in FIG. 1) to determine its geographic location
Implementation Method 2
cellular multilateration, and triangulation for accurate location tracking
Implementation Method 3
cellular multilateration, and triangulation for accurate location tracking
Data Source
AI summary
System and method of geo-fencing. A user equipment (UE) defines a geo-fence for an asset by tracking location coordinates of the UE with at least one sensor element, as the UE is moved around a perimeter of an area. The location coordinates of the geo-fence are transferred to a location aware device (LAD) attached to the asset. Upon determining, by the at least one sensor, that the LAD crossed the geo-fence, a notification is sent to a warning server operative to trigger a warning message to one or more recipients.