Magnetic Tracking for Extended Reality Training Weapons

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Solution Overview

Problem

Existing virtual reality training systems face challenges in accurately tracking and detecting the firing of realistic training weapons and correctly tracking engagement with environmental objects, due to limitations in current tracking technologies such as reliance on line of sight, constraints on play space, and disruptions from recoil and physical interactions.

Innovation Solution

The implementation of a magnetic tracking technology within an extended reality training system, which includes an emitter generating a magnetic field and receivers detecting this field to accurately track the location and orientation of objects, enabling precise representation of these objects in a virtual space and enhancing user immersion.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If magnetic tracking technology is implemented, then tracking precision is improved, but device complexity increases

Engineering Contradiction:

Improvetracking precisionVSAvoiddevice complexity

Core Design Contradiction:

Measurement precisionVSDevice complexity

Solution Approach 1:

The tracking system is divided into separate functional components: magnetic field emitters are integrated into the XR display device, while magnetic field sensors are attached to individual objects (weapons, environmental objects). This segmentation allows each component to be optimized independently and simplifies the overall system architecture while maintaining high tracking precision.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

A magnetic field is introduced as an intermediary between the tracking system and physical objects. The magnetic field serves as a mediator that enables contactless, line-of-sight-independent tracking of objects in the physical space, resolving the contradiction by providing precise measurement without requiring complex optical or mechanical tracking infrastructure.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Reliability

If realistic training weapons are used, then immersion is improved, but tracking reliability deteriorates

Engineering Contradiction:

Improvetracking reliabilityVSAvoidimmersion

Core Design Contradiction:

ReliabilityVSAdaptability or versatility

Solution Approach 1:

The system merges the tracking functionality with the realistic training weapons by integrating magnetic field sensors directly into the weapons and environmental objects. This combination ensures that the immersion-providing realistic weapons maintain reliable tracking throughout their operational range, eliminating the trade-off between realism and tracking reliability.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

Traditional mechanical or optical tracking systems that struggle with realistic weapons are replaced with magnetic field-based tracking. The magnetic field sensing mechanism provides reliable tracking of realistic weapons regardless of their physical characteristics, recoil, or movement patterns, thereby maintaining both immersion and tracking reliability.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

3Reliability

If environmental objects are tracked, then user immersion is improved, but tracking reliability deteriorates due to physical interactions

Engineering Contradiction:

Improvetracking reliabilityVSAvoiduser immersion

Core Design Contradiction:

ReliabilityVSAdaptability or versatility

Solution Approach 1:

The magnetic field tracking system is designed with universal applicability to track any object in the physical space, including environmental objects that users interact with. The system can simultaneously track weapons, environmental objects, and user movements without compromising reliability, enabling comprehensive immersion while maintaining consistent tracking performance across all tracked elements.

Inventive Principle:

Principle #6Universality (Multi-functionality)

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 solution allows for accurate and immersive tracking of realistic training weapons and environmental interactions, improving the effectiveness of virtual reality training by providing a more realistic and engaging experience that closely mimics real-world scenarios.

Implementation Method 1

an emitter located in a physical space. The emitter is configured to generate a magnetic field

Methodology Applied

Scientific EffectMagnetic field: Magnetic Field

Implementation Method 2

a receiver attached to an object located in the physical space. The receiver is configured to detect the magnetic field

Methodology Applied

Scientific EffectMagnetic field detection: Magnetic Field

Data Source

PatentUS12217628B2Magnetic tracking in an extended reality training system

Publication Date: 2025.02.04 STREET SMARTS VR

AI summary

In an embodiment, an extended reality training system is disclosed that includes an extended reality display device, an emitter, a receiver attached to an object and a processor. The processor obtains tracking data for the object based at least in part on a detection by the receiver of a magnetic field generated by the emitter. The processor obtains training scenario data corresponding to an extended reality training scenario and generates the extended reality training scenario based at least in part on the tracking data and the training scenario data. The extended reality training scenario comprises a representation of the object at a location and orientation in a virtual space that corresponds to a location and orientation of the object indicated by the tracking data. The processor provides the extended reality training scenario to the extended reality display device to present the representation of the object to a user.