Vehicle Control for OTA Update and Parking Service Coordination
Solution Overview
Problem
Existing systems face challenges in ensuring convenience during a during-parking service when data rewriting operations by OTA and execution of a during-parking service occur simultaneously, leading to potential system main relay refusal and diagnostic code storage.
Innovation Solution
An electronic control device that receives activation information to perform a during-parking service while the ignition is off, allowing update target information to be written and activated in a non-volatile memory, and suppresses the execution of the service when necessary to avoid conflicts.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If data rewriting operation by OTA is performed while ignition is off, then update target information can be written to non-volatile memory, but system main relay may be refused and diagnostic code may be stored
Solution Approach 1:
The system performs preliminary checks before executing data rewriting to determine if during-parking services are active. If services are detected, the system prepares alternative execution timing, scheduling the rewriting operation for a later time when services are not running, thereby preventing relay refusal and diagnostic code storage while ensuring rewriting completion
Solution Approach 2:
The system dynamically adjusts the execution timing of data rewriting operations based on real-time service status. The rewriting operation is flexibly scheduled to execute only when during-parking services are not active, creating a dynamic coordination mechanism that adapts to changing system conditions and avoids conflicts between rewriting and service execution
2Ease of operation
If during-parking service is executed while data rewriting is in progress, then service convenience is maintained, but system main relay may get stuck and diagnostic code may be stored
Solution Approach 1:
The system implements feedback mechanisms that continuously monitor both service execution status and data rewriting progress. When conflicts are detected through this feedback, the system automatically adjusts operation timing to prevent relay sticking and diagnostic code storage, while maintaining service availability when no conflicts exist
Solution Approach 2:
The system introduces a coordination mechanism that acts as an intermediary between during-parking services and data rewriting operations. This intermediary monitors both processes and mediates their execution timing, allowing services to run when safe and deferring rewriting operations when conflicts would occur, thereby protecting relay operation reliability
3Reliability
If system main relay is refused during activation process, then data rewriting safety is ensured, but during-parking service convenience is impaired
Solution Approach 1:
The system performs preliminary detection of during-parking service status before initiating data rewriting. When services are detected as active, the system preemptively schedules rewriting for a later time when services will not be running, thereby ensuring rewriting safety without permanently impeding service availability
Solution Approach 2:
The system dynamically coordinates the execution timing of data rewriting with service availability. By flexibly scheduling rewriting operations to occur during periods when services are not active, the system ensures rewriting safety while minimizing impact on service convenience, creating a dynamic balance between the two requirements
Data Source
AI summary
An electronic control device that executes a parking service by using a specific function of a vehicle during ignition-off of a vehicle, wherein an activation process of writing update target information including a program or data acquired from an external device to a non-volatile memory mounted on the vehicle and enabling the activation process can be received, and when the activation information is received, the execution of the parking service is suppressed.