Virtual Object Anchoring With UWB Beacons for Indoor AR Positioning
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Solution Overview
Problem
Existing methods for anchoring virtual objects in real environments face challenges such as the need for universal access to vectorized data, difficulty in duplicating real environment vectorization, and GPS inaccuracies, especially in enclosed spaces like homes and offices.
Innovation Solution
A method using a single or multiple positioning beacons and an electronic terminal for wireless communication, orientation measurement, and ultra-wideband (UWB) communication to accurately anchor virtual objects on electronic displays by calculating their position and orientation, allowing precise placement and display of virtual objects in augmented reality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If GPS location is used to locate virtual objects in the real environment, then the method is simple to implement, but the positioning accuracy is insufficient especially in enclosed spaces
Solution Approach 1:
The patent introduces an intermediary positioning system consisting of multiple beacons deployed in the real environment. These beacons act as mediators between the electronic terminal and the physical space, enabling precise indoor positioning through UWB communication and trilateration calculations, thereby resolving the GPS accuracy problem in enclosed spaces while maintaining ease of implementation through a modular beacon deployment approach
Solution Approach 2:
The patent replaces the mechanical/GPS-based positioning system with an electromagnetic field-based UWB positioning system. By using ultra-wideband electromagnetic signals transmitted between beacons and the terminal, the system achieves superior positioning accuracy in indoor environments where GPS signals are attenuated, while keeping the implementation straightforward through standardized communication protocols
2Adaptability or versatility
If vectorization of the real environment is performed to anchor data, then data can be positioned and shared, but the system complexity increases and requires universal access to vectorized data
Solution Approach 1:
The patent extracts the essential positioning and anchoring functionality from the complex vectorization process. Instead of requiring complete vectorization of the real environment, the system uses localized beacons with known positions to establish reference frames. This extraction allows data anchoring to be achieved through simpler beacon-based positioning while maintaining the ability to share data across different terminals without requiring universal access to comprehensive vectorized environment data
Solution Approach 2:
The patent segments the environment into discrete zones managed by individual beacons rather than treating the entire environment as a single vectorized space. Each beacon handles positioning and data anchoring for its local area, and multiple beacon systems can be coordinated to cover larger spaces. This segmentation reduces the complexity of any single system while maintaining overall versatility for data sharing across the entire environment
3Measurement precision
If multiple beacons are used to improve positioning accuracy, then measurement precision improves, but device complexity increases
Solution Approach 1:
The patent applies partial action by using a minimal number of beacons (three or more) sufficient to achieve accurate positioning through trilateration, rather than deploying beacons throughout the entire environment. This partial deployment provides the necessary positioning accuracy for data anchoring while keeping the system complexity and cost manageable. The system achieves excessive action in terms of positioning precision relative to the minimal beacon requirements, allowing accurate indoor positioning without comprehensive beacon coverage
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 and efficient anchoring of virtual objects in enclosed spaces without requiring universal access to vectorized environments, reducing equipment needs, and improving accuracy beyond GPS limitations.
Implementation Method 1
Generation of a command to send a first signal generated by an UWB communication interface of the electronic terminal
Implementation Method 2
Measurement of a transmission parameter of the first signal by the positioning beacon
Data Source
AI summary
A method for anchoring a virtual object to be displayed on an electronic display of an electronic terminal at a given position of space, the method including selection of a virtual object and identification of the virtual object by the positioning beacon; measurement of an orientation of the electronic terminal with respect to a reference from a second compass system; generation of a command to send a first signal; measurement of a transmission parameter of the first signal by the positioning beacon; calculation of a first position from the second orientation and the transmission parameter of the electronic terminal; anchoring of a position of the virtual object at the first position, the anchoring including an association of the virtual object with the first position.