Hands-Free Gate Access with BLE–UWB Precision Positioning
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Solution Overview
Problem
Existing access control systems for restricted areas, such as public transit stations, struggle with inconsistent and unreliable hands-free access due to varying opening distances and environmental interference, leading to bottlenecks and unauthorized access.
Innovation Solution
A method and system using a combination of Bluetooth Low Energy (BLE) and Ultra-Wideband (UWB) radio access technologies to precisely locate mobile devices relative to access points, incorporating optical detection to assess surrounding conditions, ensuring accurate and timely access control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If hands-free access is implemented using a single radio access technology, then access speed is improved, but measurement precision and reliability of position determination deteriorate due to environmental interference and unstable opening distance
Solution Approach 1:
The patent combines two different radio access technologies (first RAT and second RAT) into a hybrid positioning system. The first RAT provides initial position determination, and the second RAT provides correction data to improve precision. This merging of technologies resolves the contradiction by maintaining fast access speed while achieving high measurement precision through complementary strengths of different technologies.
Solution Approach 2:
The patent introduces a gateway device as an intermediary between the mobile device and the access control system. The gateway receives position data from the first RAT, obtains correction data from the second RAT, and processes the combined information to determine final position. This intermediary structure enables the system to leverage both technologies without requiring direct integration, resolving the contradiction between speed and precision.
2Ease of operation
If hands-free access is implemented, then ease of operation is improved for differently abled individuals, but reliability deteriorates due to gate opening too early or too late
Solution Approach 1:
The patent implements a feedback mechanism where the system continuously monitors position data from both RATs and adjusts the gate opening decision based on refined position determination. The gateway receives ongoing position updates and correction data, allowing it to make reliable decisions about when to trigger gate opening. This feedback loop ensures hands-free operation remains easy while improving reliability by reducing premature or delayed openings.
Solution Approach 2:
The patent performs preliminary position determination using the first RAT to identify potential access candidates, then applies second RAT correction data to confirm precise positioning before triggering gate opening. This two-stage preliminary action ensures that hands-free operation is maintained while reliability is improved through careful verification of position before actuation.
3Productivity
If multiple gates are equipped with hands-free validation, then productivity is improved, but reliability deteriorates due to risk of opening adjacent gates incorrectly
Solution Approach 1:
The patent applies local quality by providing each gate with its own gateway device and independent hybrid positioning system. Each gate's gateway processes position data and correction data locally to make independent opening decisions. This local化处理 ensures that multiple gates can operate in parallel with high productivity while maintaining reliability, as each gate's control is localized and independent, preventing incorrect opening of adjacent gates.
4Use of energy by moving object
If signal strength threshold is used for triggering location determination, then energy consumption is reduced, but measurement precision deteriorates due to delayed position determination
Solution Approach 1:
The patent performs preliminary position determination using the first RAT when signal strength exceeds the threshold, establishing an initial position estimate. This preliminary action consumes minimal energy while providing sufficient accuracy for most purposes. The system then selectively applies the second RAT for correction only when needed, maintaining measurement precision while keeping energy consumption low through this staged approach.
Solution Approach 2:
The patent applies partial action by using the first RAT for basic position determination in most cases, and only invoking the second RAT for correction when higher precision is needed. This partial use of the more energy-intensive second technology maintains measurement precision where required while minimizing overall energy consumption through selective application.
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
Ensures reliable, predictable traffic flow by precisely determining the position of mobile devices relative to access points, preventing unauthorized access and minimizing interference, particularly beneficial for differently abled individuals and high-traffic situations.
Implementation Method 1
locating a mobile or wireless device using a first radio access technology (RAT) having a first location capability. The method further includes measuring a signal strength using the first RAT
Data Source
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AI summary
A method and system provide for a hands-free access mechanism. The method includes locating a mobile device using a first radio access technology. The method further includes measuring a signal strength using the first technology and determining that the signal strength meets a predetermined signal strength threshold in order to trigger a location process using a second technology having a more precise location capability than the first technology. The method may further assess environmental conditions upon determining a particular precise location and trigger an access sequence upon detecting the mobile device in a selected position. The access sequence triggered may be impacted by the environmental conditions.