Spatially Separated RF Antennas for Low-Power Relative Position Tracking
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Solution Overview
Problem
Current position tracking systems, especially in VR and AR environments, face challenges with accuracy, particularly indoors, and require significant power consumption, limiting their effectiveness for precise real-time tracking of multiple objects.
Innovation Solution
A system utilizing multiple spatially separated receiver antennae to acquire RF signals from transmitters, determining timing information, and using a processor to calculate relative positions, enabling accurate and low-power tracking of objects both indoors and outdoors.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If multiple RF transmitters are deployed for accurate indoor tracking, then position accuracy is improved, but system complexity and power consumption increase
Solution Approach 1:
The system makes mobile devices serve multiple functions: they act as both RF receivers for position tracking and as portable transmitters, eliminating the need for separate fixed transmitter infrastructure and reducing overall system complexity
Solution Approach 2:
The system enables devices to serve themselves by using each mobile device's own RF transmitter to provide positioning signals for other devices, creating a self-sustaining tracking network without external infrastructure
2Measurement precision
If continuous RF signal transmission is used for real-time tracking, then tracking accuracy and responsiveness are improved, but power consumption increases
Solution Approach 1:
The system implements periodic RF signal transmission and reception at optimized intervals, maintaining real-time tracking accuracy while significantly reducing power consumption compared to continuous transmission
Solution Approach 2:
The system dynamically adjusts transmission power and signal frequency based on tracking requirements and environmental conditions, optimizing the balance between tracking accuracy and power consumption
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 approach provides high accuracy and low power consumption, enabling precise real-time tracking of multiple objects in VR and AR environments, improving user experience and extending battery life.
Implementation Method 1
at least three spatially separated receiver antennae configured to receive radio frequency (RF) signals from one or more RF-transmitting antennae
Implementation Method 2
determine timing information from the acquired RF signals
Data Source
AI summary
A network comprises a network apparatus constructed and arranged for each of a plurality of vehicles in radio frequency (RF) communication with each other, the network apparatus comprising: at least one first transceiver; at least one second transceiver configured to exchange RF signals with the at least one first transceiver; receiver circuitry configured to determine timing information from the acquired RF signals; memory storing information related to fixed distances between the at least one first transceiver and the at least one second transceiver; a processor coupled to the memory to access the stored information related to the fixed distances, and to the receiver circuitry to receive the timing information determined from the RF signals, the processor being configured to determine a relative position of the vehicle with respect to a receipt of the RF signals based on the stored information related to the fixed distances between each of at least three spatially separated antenna and on the timing information determined by the receiver circuitry; and a control system configured to control operation of the vehicle in response to the relative position of the vehicle, determined by the processor.