Remote Start Relay Control Isolated From CAN Security Risks
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Solution Overview
Problem
Existing vehicle remote control systems are vulnerable to security risks, particularly with CAN protocol, and do not adequately consider safety when disabling vehicle starting, leading to potential hazards and unauthorized control.
Innovation Solution
A vehicle-mounted device with communication means, vehicle information detecting means, and relay input/output means that controls an external relay to switch between starting-disabled and starting-enabled states based on elapsed time and communication status, ensuring safety and preventing unauthorized disablement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Extent of automation
If the vehicle is remotely controlled to disable starting through CAN protocol, then the remote control function is achieved, but security vulnerabilities and unauthorized control risks increase
Solution Approach 1:
The patent extracts the starting control function from the vulnerable CAN protocol network and implements it through a dedicated relay device that operates independently. The relay device receives control signals and directly controls the starting relay through separate wiring, isolating the critical control function from the insecure network environment.
Solution Approach 2:
The patent introduces a relay device as an intermediary component between the network system and the vehicle starting system. This relay device acts as a security gateway that validates control signals and executes starting control through a separate, secure communication channel, preventing direct access to the CAN protocol vulnerabilities.
2Extent of automation
If the engine starting is disabled remotely without considering vehicle state, then the remote control function is achieved, but safety hazards and potential harm to users increase
Solution Approach 1:
The patent implements preliminary safety checks before executing the starting disable command. The relay device checks the vehicle state including whether the vehicle is stationary, the gear position, and other safety conditions before responding to remote control signals, preventing harmful actions during unsafe conditions.
Solution Approach 2:
The patent incorporates feedback mechanisms where the relay device continuously monitors vehicle state parameters and communicates this information to the control system. This feedback loop ensures that remote control commands are executed only when safety conditions are met, and the system state is constantly verified to prevent hazardous situations.
3Speed
If the relay control command is executed immediately upon receiving remote signal, then the response speed is improved, but the risk of unauthorized control and system errors increases
Solution Approach 1:
The relay device performs preliminary validation of incoming control signals against pre-established safety criteria and authentication requirements before execution. This preliminary check filters out unauthorized or erroneous commands while maintaining rapid response for valid commands.
Solution Approach 2:
The system implements feedback verification where the relay device confirms the vehicle state matches expected conditions before executing the control command. This feedback mechanism provides a final validation step that prevents unauthorized control while maintaining fast response times for legitimate operations.
Data Source
AI summary
A vehicle-mounted device includes vehicle information detecting unit for detecting an on/off state of vehicle power, relay input/output unit for controlling an external relay configured to make a switch between a starting-disabled state and a starting-enabled state of a vehicle, and vehicle information-associated control unit for controlling the external relay based on a relay control command. The vehicle information-associated control unit controls the external relay based on an elapsed time since a change in the on/off state of vehicle power detected by the vehicle information detecting unit.