Vehicle Controller Load Sharing for Heat-Aware Travel Control
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Solution Overview
Problem
The increasing processing load in vehicle control systems for automatic driving leads to higher manufacturing costs and heat generation issues, hindering the development of sustainable transportation systems.
Innovation Solution
A control device with a first controller that distributes processing tasks to a second controller, allowing both to perform travel control, thereby reducing the load on the first controller and enabling efficient processing even when one system fails, using multiple batteries and controllers to ensure continuous operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a single controller performs all processing for automatic driving control, then processing completeness is ensured, but processing load and heat generation increase
Solution Approach 1:
The patent divides the control system into a first controller and a second controller, segmenting the processing tasks. The first controller handles travel control processing while the second controller handles other vehicle control tasks, distributing the processing load across multiple units to reduce heat generation and improve reliability through redundancy
2Adaptability or versatility
If processing load increases to handle more automatic driving functions, then functionality is improved, but manufacturing cost increases
Solution Approach 1:
The patent makes the first controller multi-functional by enabling it to perform both travel control processing and other vehicle control functions. This allows a single controller to handle multiple tasks that would otherwise require separate dedicated hardware, reducing overall system cost while maintaining enhanced functionality
3Device complexity
If a single controller is used for travel control, then system simplicity is maintained, but reliability decreases when failure occurs
Solution Approach 1:
The patent establishes a preliminary communication interface and data transmission mechanism between the first and second controllers before any failure occurs. This pre-configured redundancy system allows seamless failover, where the second controller can immediately take over travel control functions if the first controller fails, improving reliability without significantly increasing system complexity
Data Source
AI summary
A control device for a vehicle includes: a first controller; and a second controller controlled by the first controller. The first controller is configured to transmit information used for first processing necessary for travel control of the vehicle to the second controller, the second controller is configured to perform the first processing based on the information received from the first controller, and transmit a result of the first processing to the first controller, and the first controller is configured to perform travel control of the vehicle based on the result received from the second controller.