Vehicle Authentication Update Control for Lockout-Free Access
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Solution Overview
Problem
Passengers face inconvenience and safety risks during vehicle program updates due to the inability to unlock or start the vehicle when the electronic control device authentication is being updated, especially when communication with a mobile device is disabled.
Innovation Solution
A vehicle control system that integrates first and second control devices for authentication via wireless communication and image capture, along with a management device to manage program updates and locking/unlocking based on passenger input and detection, ensuring safe and convenient operation during updates.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If program update is performed for the electronic control device during vehicle operation, then system functionality is improved, but passenger convenience deteriorates due to inability to unlock or start the vehicle
Solution Approach 1:
The system performs preliminary actions by detecting mobile device absence and proactively displaying a setting screen before the program update begins. This allows passengers to pre-authorize the update and configure locking preferences in advance, preventing operational disruptions during the actual update process.
Solution Approach 2:
The update management device acts as an intermediary between the electronic control device and the passenger. It mediates the conflict by providing a setting screen that captures passenger intent, then translates this into appropriate control actions for the lock mechanism and drive source, allowing the update to proceed without compromising passenger convenience.
2Reliability
If the vehicle lock mechanism is controlled to prevent unauthorized access during program update, then security is improved, but passenger convenience deteriorates by locking legitimate passengers out
Solution Approach 1:
The lock control strategy dynamically adjusts based on real-time conditions. When the mobile device is absent and a setting is received, the system transitions from a static locked state to a dynamic state where the lock mechanism behavior changes according to the received settings, allowing legitimate access while maintaining security against unauthorized access.
Solution Approach 2:
The system changes the parameter of lock control by receiving settings from the passenger that modify the locking behavior. These parameter changes allow the lock mechanism to differentiate between authorized passengers (who can access even during updates) and unauthorized users (who remain blocked), resolving the contradiction between security and convenience.
3Reliability
If the drive source is controlled to prevent unauthorized use during program update, then security is improved, but passenger convenience deteriorates by preventing legitimate vehicle operation
Solution Approach 1:
The drive source control dynamically adjusts based on the presence of the mobile device and received settings. When the device is absent and settings are received, the system transitions to a dynamic control mode where the drive source can be operated by authorized passengers according to the settings, while maintaining security blocks for unauthorized users.
Solution Approach 2:
The system changes the operational parameters of the drive source by applying received settings. These parameter changes enable the drive source to differentiate between authorized operation (allowing legitimate passengers to drive) and unauthorized operation (blocking potential thieves), thus resolving the security-convenience contradiction.
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
Enhances passenger convenience and safety by allowing controlled program updates without locking passengers out of their vehicles or preventing unauthorized use, thereby contributing to improved traffic safety.
Implementation Method 1
a first control device that acquires first authentication information via wireless communication with a mobile device
Implementation Method 2
a second control device that acquires second authentication information based on a captured image from a camera
Data Source
AI summary
A vehicle control system includes a key authentication ECU, an image authentication ECU, a door lock mechanism that locks a door of a vehicle, a touch panel that receives an operation; and a central ECU that causes a touch panel mounted in the vehicle to display a second setting screen that receives a setting of execution allowance for a program update for the image authentication ECU and a setting of necessity of locking of the vehicle after alighting in a case where a communication state between the key authentication ECU and a mobile device is communication-disabled and an update program for updating a program being executed by the image authentication ECU is acquired and that controls the image authentication ECU and the lock mechanism in accordance with a setting received on the second setting screen.