Vehicle ECU Programming Control for Faster Factory Flashing
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Solution Overview
Problem
The management of programs for electronic control units (ECUs) in vehicle manufacturing is time-consuming, necessitating checks for compatibility and version updates, which hinders manufacturing efficiency and increases carbon dioxide emissions.
Innovation Solution
A vehicle control system comprising a vehicle control unit with a non-volatile program storage unit and a master control unit that stores writing data for programming the vehicle control unit. The master control unit can execute the writing process, select target control units, transmit wake-up requests, and perform the writing process, allowing programs to be written during manufacturing without prior installation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If programs are pre-installed in ECUs by the supplier before supply to manufacturing steps, then the ECU functionality is ensured, but the time required for specification checking and program management in manufacturing steps increases
Solution Approach 1:
The master control unit performs preliminary actions by storing writing data for multiple vehicle control units in advance and automatically selecting target control units based on predetermined conditions. This preliminary preparation eliminates the need for time-consuming manual specification checking and program management during manufacturing steps, while ensuring that the correct programs are installed in the correct ECUs.
2Manufacturing precision
If manual checking and program writing is performed for each ECU in manufacturing steps, then program compatibility and version correctness are ensured, but manufacturing efficiency decreases and production time increases
Solution Approach 1:
The master control unit performs self-service by automatically selecting target vehicle control units based on predetermined conditions and executing the writing process without manual intervention. The system uses stored writing data that contains compatibility information, allowing automatic matching of programs to ECUs while maintaining manufacturing precision and significantly improving productivity.
3Adaptability or versatility
If multiple ECUs are supplied without pre-installed programs, then flexibility in manufacturing is improved, but the complexity of program management and version control increases
Solution Approach 1:
The master control unit serves multiple functions: it stores writing data for multiple different vehicle control units, automatically selects target ECUs based on predetermined conditions, and executes the writing process. This multi-functional approach allows the system to handle diverse ECU types and programs uniformly, maintaining manufacturing flexibility while reducing management complexity through automation.
Data Source
AI summary
A vehicle control system includes a vehicle control unit which includes a first memory and controls a function unit installed in a vehicle by executing a program stored in the memory and a master control unit which is connected with the vehicle control unit, and the master control unit includes a second memory, stores writing data for writing the program to the first memory in the second memory, is capable of executing a writing process of writing the program to the first memory provided to the vehicle control unit based on the writing data, selects a processing target control unit, which is set as a target of the writing process, from plural vehicle control units based on a predetermined selection condition, transmits a wake-up request to the processing target control unit, and subsequently performs the writing process for the processing target control unit.