Vehicle ECU Communication Startup Without Stored Identification
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Solution Overview
Problem
Conventional vehicle failure diagnosis systems face challenges in starting the power supply of vehicles during delivery when identification information is not yet stored, leading to increased complexity and cost, and security concerns due to the need for additional components.
Innovation Solution
A mobile object controller with a storage section, timekeeping section, and ECUs that enable communication establishment between ECUs via a terminal device using a power switch operation, allowing power-on without direct connection, and displaying informative images to manage authentication and communication processes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a dedicated component is added to enable power supply start-up without operating the power switch, then the vehicle can be started up before delivery, but the cost increases
Solution Approach 1:
The power switch is designed to serve multiple functions: normal power-on operation when identification information is stored, and diagnostic mode activation when identification information is not stored. This eliminates the need for a dedicated component while maintaining the ability to start up power supply before delivery.
Solution Approach 2:
The existing power switch and ECU resources are utilized to provide the additional functionality of pre-delivery power start-up. The ECU automatically detects whether identification information is stored and switches between normal authentication mode and diagnostic mode, requiring no additional hardware components.
2Productivity
If the identification information is not stored in the vehicle, then the vehicle can be delivered, but the power supply cannot be started up for maintenance or diagnosis
Solution Approach 1:
The system allows power supply to be started up before delivery by detecting the absence of identification information and automatically switching to diagnostic mode. This enables maintenance and diagnosis to be performed in advance, improving both delivery efficiency and maintenance accessibility.
Solution Approach 2:
The ECU dynamically changes its operational mode based on the presence or absence of identification information. When no identification information is detected, the system transitions from normal authentication mode to diagnostic mode, allowing power start-up and maintenance operations without requiring physical modification or additional components.
3Adaptability or versatility
If the vehicle electronic system is made more complex to accommodate more ECUs, then more functions are available, but security performance considerations become more difficult
Solution Approach 1:
The ECU acts as an intermediary that manages communication and authentication between different system components. By centralizing the authentication logic and using the power switch as a controlled interface, the system maintains security while enabling additional functional capabilities through software-based solutions rather than adding more physical access points.
Data Source
AI summary
A mobile object controller includes a first ECU and a second ECU, when a mobile object is in a power-off state, the first ECU starts timekeeping for a first predetermined time period by a timekeeping section if the first ECU recognizes a predetermined operation on a power switch while identification information is not stored in a storage section, and starts communication establishment processing between the first ECU and the second ECU to establish communication between the first ECU and the second ECU so as to allow the first ECU to be operated via the second ECU by a terminal device connected to the second ECU.