UWB Vehicle Access Control for Precise Phone-Based Unlocking
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Solution Overview
Problem
Existing passive keyless entry systems, such as PEPS and mobile phone Bluetooth key solutions, face issues with positioning precision, leading to security risks and user inconvenience in vehicle access and control.
Innovation Solution
Implementing ultra-wideband (UWB) communication to establish precise tracking of a mobile terminal's movement relative to a vehicle, enabling accurate execution of vehicle operations like unlocking and locking based on predefined regions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If mobile phone Bluetooth key solution is used, then convenience of vehicle access is improved, but positioning precision deteriorates
Solution Approach 1:
The patent introduces an ultra-wideband communication module as an intermediary between the mobile terminal and vehicle-mounted apparatus. This intermediary provides precise positioning capabilities through time-of-flight measurement, resolving the positioning precision issue while maintaining the convenience of mobile phone-based access control.
Solution Approach 2:
The patent replaces the Bluetooth wireless communication system with an ultra-wideband communication system. This substitution enables precise distance measurement through electromagnetic time-of-flight measurement, thereby improving positioning precision while maintaining contactless operation convenience.
2Ease of operation
If mobile phone Bluetooth key solution is used, then keyless entry function is improved, but security reliability deteriorates
Solution Approach 1:
The patent implements a feedback mechanism where the vehicle-mounted apparatus receives real-time positioning information from the mobile terminal via ultra-wideband communication. The system continuously monitors the mobile terminal's location and provides feedback to determine whether to execute unlocking or locking operations, thereby improving security reliability while maintaining keyless entry functionality.
Solution Approach 2:
The patent performs preliminary positioning and authentication actions before executing vehicle access operations. The system pre-establishes the mobile terminal's location status through ultra-wideband communication and determines the appropriate operation (unlocking or locking) in advance, preventing unauthorized access and improving security reliability.
3Extent of automation
If Bluetooth positioning is used, then automatic control function is improved, but positioning accuracy deteriorates
Solution Approach 1:
The patent replaces Bluetooth positioning with ultra-wideband positioning technology. This substitution enables accurate determination of whether the mobile terminal is inside or outside the vehicle through precise time-of-flight measurement, thereby improving positioning accuracy while maintaining automatic control functionality for unlocking and locking operations.
Data Source
AI summary
A vehicle control method is provided, applied to a vehicle-mounted apparatus, including: The vehicle-mounted apparatus establishes a first communication connection to a mobile terminal, predicts a first movement track or a second movement track of the mobile terminal, and performs a first operation when a first condition is met, or performs a second operation when a second condition is met. The first condition includes: the first movement track enters a first region, and the mobile terminal enters a second region; the second condition includes: the second movement track leaves a third region, and the mobile terminal leaves the second region; and the second region includes the first region, and the third region includes the first region.