Vehicle Controller for Automatic Valet Mode Reversion
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Solution Overview
Problem
Existing vehicle security systems do not effectively manage restricted modes, particularly in scenarios where a secondary driver may need temporary access while preventing unauthorized use or data removal, and lack efficient mechanisms for automatically reverting to full operational mode after a predetermined distance is exceeded.
Innovation Solution
A system and method utilizing a controller to monitor and manage vehicle state changes, limiting speed and acceleration, detecting the presence of authorized drivers and auxiliary memory devices, and automatically reverting to full operational mode when a predetermined distance is traveled or an authorized device is detected.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a restricted mode is implemented to limit vehicle functionality for secondary drivers, then security against unauthorized use is improved, but the ease of operation deteriorates due to manual mode switching requirements
Solution Approach 1:
The system pre-establishes distance thresholds and monitoring parameters before the valet mode begins. The controller is pre-programmed with the distance limit value, and all necessary monitoring systems (odometer, speed sensor) are pre-configured to automatically detect when the threshold is reached, eliminating the need for manual intervention during mode transitions.
Solution Approach 2:
The system automatically monitors the vehicle's own operational parameters (distance traveled, current mode state) and self-regulates by transitioning between valet and normal modes based on pre-set criteria. The controller continuously compares actual distance against the stored threshold and autonomously executes mode changes without requiring external input from the driver or operator.
2Reliability
If manual mode switching is required between valet and normal modes, then security control is improved, but loss of time increases due to manual intervention requirements
Solution Approach 1:
The distance threshold and monitoring logic are pre-established before valet mode activation. The system prepares all necessary detection and comparison mechanisms in advance, so that when the vehicle is operated in valet mode, the automatic transition can occur immediately upon reaching the threshold without any delay for manual configuration or decision-making.
Solution Approach 2:
The controller autonomously manages the entire mode transition process by continuously monitoring distance traveled, comparing it against the pre-stored threshold, and automatically switching between valet and normal modes. This eliminates the time loss associated with manual mode switching while maintaining security control through the pre-established distance-based criteria.
3Ease of operation
If distance-based automatic mode reversion is implemented, then ease of operation is improved, but device complexity increases due to additional monitoring requirements
Solution Approach 1:
The controller leverages existing vehicle systems that already serve other functions. The odometer, which universally tracks vehicle mileage for billing and maintenance purposes, is also used to monitor distance in valet mode. The speed sensor, already present for cruise control and fuel management, provides data for calculating distance traveled during restricted operation. This multi-functional approach adds minimal complexity while achieving automatic mode reversion.
Solution Approach 2:
The system uses the vehicle's own existing operational data and systems to monitor distance and trigger mode transitions. Rather than adding dedicated external monitoring equipment, the controller utilizes the vehicle's inherent telemetry capabilities (odometer, speed sensor) to perform the monitoring function, thereby minimizing additional device complexity while enabling automatic operation.
4Reliability
If existing vehicle security systems with code entry are used, then security against intruders is improved, but adaptability deteriorates because they lack automatic reversion capabilities for secondary drivers
Solution Approach 1:
The system dynamically transitions between two distinct operational states: valet mode with restricted functionality and normal mode with full functionality. This dynamic adaptability allows the same vehicle to serve different user needs (primary owner vs. secondary valet driver) without requiring separate security systems. The controller automatically adjusts the level of access and monitoring based on the current mode and distance traveled.
Solution Approach 2:
The controller serves multiple functions: it manages both the traditional security code entry system for intruder protection and the new distance-based automatic mode reversion system for secondary driver management. By integrating these functions into a single control unit that can operate in multiple modes, the system achieves both security against intruders and adaptability for different user scenarios without requiring separate dedicated systems.
Data Source
AI summary
A device for controlling a restricted mode of a vehicle is provided. The device includes a controller that is configured to receive an input indicative of a request to change a vehicle state from a fully operational mode to a restricted mode and to transmit a first control signal indicative of a request to limit at least one of vehicle speed and vehicle acceleration. The controller is further configured to monitor a distance traveled by a driver when the vehicle is in the restricted mode and to compare the distance traveled to a predetermined distance limit. The controller is further configured to transmit a second control signal to remove the request to limit the at least one of the vehicle speed and the vehicle acceleration in response to determining that the distance traveled exceeds the predetermined distance limit.