Remote Parking Assist Localization via Mobile Device Fallback
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Remote parking assist systems face challenges in accurately determining the location of a mobile device relative to a vehicle, leading to cumulative errors in dead reckoning, especially when the key fob's reliability is compromised, necessitating a solution to maintain system functionality within regulatory distance requirements.
Innovation Solution
The system employs a processor that communicatively couples with both key fobs and mobile devices, switching between localization modes based on key fob usability, using signal strength measurements and adjusting operational zones to mitigate errors, and instructs mobile devices to activate alternative wireless modules for accurate localization and error compensation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the system uses key fob for localization, then measurement precision is improved, but reliability deteriorates when key fob is not usable or present
Solution Approach 1:
The system introduces a mobile device as an intermediary localization source when the key fob is unavailable. The processor detects key fob unavailability and switches to using mobile device location data (GPS, cellular triangulation, Wi-Fi positioning) as a mediator to maintain operator location estimation, ensuring continuous system functionality despite the primary localization source being unavailable.
Solution Approach 2:
The system dynamically changes the localization parameter source based on key fob availability. When the key fob is usable, the system uses proximity detection parameters (signal strength, radio frequency positioning). When the key fob becomes unavailable, the system transitions to using mobile device location parameters (GPS coordinates, cellular tower triangulation data), effectively changing the measurement parameters to maintain localization capability.
2Measurement precision
If the system requires key fob presence for autonomous parking, then measurement precision is improved, but ease of operation deteriorates
Solution Approach 1:
The system performs self-service by automatically detecting key fob unavailability and switching to mobile device localization without requiring operator intervention. The processor monitors key fob presence and autonomously transitions to alternative localization methods, maintaining precise distance measurements and regulatory compliance without burdening the operator with manual configuration or device switching.
3Reliability
If the system uses mobile device instead of key fob, then reliability is improved, but measurement precision deteriorates
Solution Approach 1:
The system prepares for potential key fob unavailability by having mobile device localization capabilities ready as a cushioning backup. The processor is configured to switch to mobile device localization when key fob signals are lost, providing a pre-established fallback mechanism that maintains system reliability while accepting a trade-off in measurement precision that is compensated through regulatory zone adjustment.
Solution Approach 2:
The system dynamically adjusts operational parameters based on the localization source being used. When switching from key fob to mobile device localization, the processor modifies the autonomous parking operational zones to account for the reduced precision of mobile device location data, creating a dynamic system that adapts its operational boundaries to maintain safety and compliance despite the less precise measurement source.
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 ensures accurate localization and maintains autonomous parking functionality even when key fob reliability is low, reducing errors and ensuring compliance with distance regulations by adjusting operational zones and utilizing mobile device signals effectively.
Implementation Method 1
uses a measurement of a strength of a signal between the mobile device and the vehicle to estimate a location of the mobile device
Data Source
AI summary
Method and apparatus are disclosed for mitigating key fob error for remote parking assist systems. An example vehicle includes wireless modules that communicatively couple to a key fob and a mobile device and a processor. The processor, when the key fob is usable, estimates a location of an operator based on the key fob, and operate an autonomous parking system in a first mode. Additionally, the processor, when the key fob is not usable, estimates the location of the operator based on the mobile device, and operate the autonomous parking system in a second mode.