Magnetic XR Object Tracking With a Single Sensor
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing XR applications require sophisticated tracking systems with multiple sensors, leading to increased design complexity, cost, and weight due to the proliferation of sensors.
Innovation Solution
A single magnetic sensor and magnet are used to detect magnetic value variations of a target object, allowing for accurate event detection and reducing system complexity, cost, and weight by utilizing only one sensor.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple sensors are used for tracking in XR applications, then tracking accuracy and reliability are improved, but device complexity, cost, and weight increase
Solution Approach 1:
The patent combines multiple sensing functions into a single magnetic sensor system. The magnetometer detects magnetic field variations caused by different magnet arrangements on the target object, enabling multiple tracking functions (position, orientation, and event detection) to be achieved through one integrated sensor rather than multiple separate sensors.
Solution Approach 2:
The magnetic sensor system is designed to perform multiple tracking functions simultaneously. By detecting magnetic field variations from differently arranged magnets, a single sensor can determine position, orientation, and detect events such as button presses or trigger activations, making the sensor universal for multiple tracking purposes.
2Measurement precision
If multiple sensors are deployed on the target object, then tracking precision is improved, but the weight of the target object increases
Solution Approach 1:
The patent merges multiple sensing functions into a single magnetic sensor, eliminating the need for multiple separate sensors that would add weight. The magnetometer detects all magnetic field variations from different magnet arrangements, achieving comprehensive tracking precision without the cumulative weight of multiple sensors.
Solution Approach 2:
The patent replaces potential mechanical or optical sensor systems with a magnetic sensing system. Magnetic sensors are generally lighter and can achieve high precision through field detection rather than physical contact or complex optical paths, reducing the weight burden on the moving target object.
3Adaptability or versatility
If multiple sensors are used for comprehensive event detection, then detection capability is improved, but cost increases
Solution Approach 1:
The magnetic sensor system is designed with universal detection capability. By analyzing magnetic field variations from different magnet arrangements, a single sensor can detect multiple types of events (button presses, trigger activations, position changes, orientation changes) without requiring different specialized sensors for each event type.
Solution Approach 2:
The system detects different events by monitoring changes in magnetic field parameters (strength, direction, variation patterns). Different magnet arrangements produce distinct magnetic field parameter signatures, allowing the single magnetometer to distinguish between various events through parameter analysis rather than requiring multiple dedicated sensors.
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
The method effectively distinguishes various events of a target object, decreasing design complexity, cost, and weight by employing a single magnetic sensor.
Implementation Method 1
obtaining an object magnetic variation from a magnetometer, wherein the magnetometer and an object magnet are disposed on a real object in a real world
Data Source
AI summary
A host, a tracking system, and a tracking method are described herein. The host includes a storage circuit and a processor. The storage circuit is configured to store a program code. The processor is coupled to the storage circuit and is configured to access the program code to execute: obtaining an object magnetic variation from a magnetometer, wherein the magnetometer and an object magnet are disposed on a real object in a real world; determining a real object behavior of the real object based on the object magnetic variation; and controlling a virtual object in a virtual world based on the real object behavior.