UWB Access Control with BLE Wake-Up for Precise Positioning
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing access control systems face challenges in providing seamless and accurate location determination of devices, leading to inefficiencies in access management and environmental adjustments, particularly in congested environments.
Innovation Solution
Utilizing ultra-wideband (UWB) technologies for precise location tracking and communication between devices, leveraging angle of arrival and time of flight calculations to enhance access control systems, enabling dynamic environmental adjustments and personalized user experiences.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If UWB communication circuitry operates continuously to provide accurate location determination, then measurement precision is improved, but energy consumption increases
Solution Approach 1:
The system performs preliminary actions by using Bluetooth Low Energy (BLE) communication to detect the presence and approximate location of mobile devices before activating the power-intensive UWB communication circuitry. This preliminary detection allows the system to wake up UWB only when and where needed, maintaining high location determination accuracy while significantly reducing overall energy consumption.
Solution Approach 2:
The patent introduces Bluetooth Low Energy (BLE) communication as an intermediary between continuous operation and complete shutdown of the UWB system. BLE serves as a low-power mediator that screens for devices requiring precise location tracking, then triggers UWB activation only for those specific cases, thus resolving the contradiction between continuous precision and energy savings.
2Use of energy by moving object
If Bluetooth Low Energy communication is used for initial device detection, then energy consumption is reduced, but measurement precision for location determination decreases
Solution Approach 1:
The system segments the location determination process into two distinct stages: a preliminary screening stage using low-power Bluetooth Low Energy (BLE) communication for initial device detection, and a precision measurement stage using ultra-wideband (UWB) communication for accurate location determination. This segmentation allows the system to maintain low energy consumption while achieving high measurement precision when needed.
Solution Approach 2:
The patent implements a dynamic communication architecture that transitions between different communication modes based on operational requirements. The system dynamically switches from BLE for initial detection to UWB for precise location determination, optimizing both energy consumption and measurement precision at different stages of the access control process.
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
UWB technologies provide accurate and efficient access control by ensuring authorized access, optimizing environmental conditions, and enhancing safety and security through precise location monitoring.
Implementation Method 1
determining a duration of time for which the access control device is to retain open a barrier that secures the passageway based on the location of the second computing device
Implementation Method 2
determining the location of the second computing device relative to the first computing device may include determining an angle of arrival of the at least one UWB communication signal at a plurality of antennas of the first computing device
Data Source
Figure 1
Figure 2
AI summary
A system according to one embodiment includes a first computing device comprising ultra-wideband communication circuitry, and a second computing device comprising ultra- wideband communication circuitry configured to communicate with the ultra-wideband communication circuitry of the first computing device to determine the angle and distance of the first computing device relative to the second computing device.