Remote Parking Gesture Validation to Prevent Freeze-Induced Vehicle Motion
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Solution Overview
Problem
Existing remote parking systems using Dead Man's Switch (DMS) solutions face challenges in ensuring safe vehicle control, particularly when users freeze in dangerous situations, leading to unintentional vehicle movements.
Innovation Solution
The system employs a challenge-response authentication method where a remote device interacts with a vehicle system using a DMS functionality. The remote device responds to a unique challenge from the vehicle system, and the vehicle system validates the response. If the interaction is interrupted or the response is not validated, the vehicle brakes. This is achieved through a rub movement or swipe gesture on the touch screen, with validation criteria including touch position changes and swipe movement patterns.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a simple button press is used for DMS challenge response, then ease of operation is improved, but reliability deteriorates because users may freeze and hold the finger on the screen instead of releasing it
Solution Approach 1:
The patent transforms the static button press into a dynamic gesture requiring continuous motion (swiping across the screen). This dynamic requirement ensures the user is actively controlling the vehicle rather than passively holding a button, resolving the reliability issue while maintaining ease of operation through intuitive gesture-based interaction.
Solution Approach 2:
The patent implements periodic challenge-response sequences where the system issues challenges at regular intervals and requires corresponding gestures. This periodic verification ensures continuous user engagement and provides multiple opportunities for correction if the user freezes, thereby improving reliability without complicating the basic interaction.
2Reliability
If the challenge response requires complex user actions, then reliability is improved by avoiding unintentional responses, but ease of operation deteriorates as the driver cannot focus on surroundings
Solution Approach 1:
The patent uses dynamic swiping gestures that are intuitive and natural for mobile device interaction. These gestures require sufficient motion to be deliberate rather than accidental, providing reliability while remaining simple enough for drivers to perform with minimal attention, thus maintaining ease of operation.
Solution Approach 2:
The system provides immediate visual feedback on the touch screen confirming whether the gesture was recognized and processed. This feedback mechanism allows drivers to quickly understand if their input was successful without needing to monitor vehicle systems closely, maintaining ease of operation while ensuring reliable response validation.
3Ease of operation
If the DMS validation accepts any touch coordinates within button area, then ease of operation is improved, but reliability deteriorates in dangerous situations where users freeze
Solution Approach 1:
The patent replaces static coordinate validation with dynamic gesture validation that requires continuous motion across the screen. This ensures the user is actively engaging with the control rather than freezing with a static touch, improving reliability while keeping the interaction simple and intuitive for ease of operation.
Data Source
AI summary
A method for a vehicle system to assist to remotely parking or unparking a vehicle, the method comprising transmitting, to a remote device, a challenge request, determining, by the vehicle system, whether a challenge response to the challenge request has been received from the remote device, wherein the challenge response comprises information about a touch position on a touch screen of the remote device wherein a touch input has been received, if the challenge response is received, determining, by the vehicle system, whether the challenge response is valid, if the challenge response is valid, controlling the vehicle to move, and if the challenge response is not valid, controlling the vehicle to brake, wherein the challenge response is valid if the touch position indicates that the touch input is an expected rub movement performed on a valid area of the touch screen.