UWB Emitter Random Delay Reduces Collisions
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Solution Overview
Problem
Existing systems for estimating the position of objects using ultra-wide band (UWB) radio pulses face increased collisions between messages from multiple emitting devices, which hinders accurate positioning and consumes excessive electrical energy.
Innovation Solution
The method involves an emitting device with a simplex communication module and a wireless energy reception module, which charges an electric accumulator and selects a random emission delay only when sufficient energy is stored, ensuring UWB messages are emitted at de-correlated times, reducing collisions and energy consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multiple emitting devices transmit UWB messages simultaneously, then position estimation coverage is improved, but message collision probability increases
Solution Approach 1:
The patent implements periodic transmission of UWB messages by emitting devices at scheduled intervals rather than continuously or simultaneously. Each device transmits messages periodically with a defined repetition period, which spreads transmissions across time and reduces collision probability while maintaining coverage through multiple devices operating in the same periodic pattern
Solution Approach 2:
The system performs preliminary synchronization and timing adjustment before actual position estimation measurements. Devices are pre-configured with synchronized timing references and transmission schedules, ensuring that messages are emitted at coordinated times that minimize collisions while maximizing the effectiveness of position estimation
2Measurement precision
If emitting devices continuously monitor and transmit UWB messages, then position estimation accuracy is improved, but electrical energy consumption increases
Solution Approach 1:
Instead of continuous transmission, the patent employs periodic message emission with defined intervals. Devices transmit UWB messages at regular periods rather than continuously, significantly reducing energy consumption while maintaining sufficient position estimation accuracy through the periodic sampling of position data
Solution Approach 2:
The emitting devices autonomously manage their transmission schedules and energy resources without requiring continuous external control. Each device independently determines optimal transmission moments based on its energy state and positioning requirements, enabling energy-efficient operation while maintaining measurement precision
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 effectively reduces the probability of collisions between UWB messages and minimizes electrical consumption by optimizing the timing of emissions based on varying charging conditions across devices.
Implementation Method 1
a module for receiving wireless electrical energy suitable for receiving electrical energy emitted by at least one wireless electrical power supply station
Data Source
AI summary
An emitting method, by an emitting device to at least one receiving station, of UWB messages, the emitting device including a simplex communication module for the emitting of UWB messages, a module for receiving wireless electrical energy suitable for receiving emitted electrical energy and for storing the electrical energy received in an electric accumulator, the method including a charging of the electric accumulator by the module for receiving wireless electrical energy, an evaluation of a criterion of sufficient electrical energy for the emitting of a UWB message, when the criterion of sufficient electrical energy for the emitting of a UWB message is satisfied, a selecting of a random emission delay and an emitting of the UWB message, by the simplex communication module, after the expiration of the random emission delay selected.