Motor Vehicle Control System Bus Architecture
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current motor vehicle control systems lack efficient operability in displaying and managing information related to vehicle operation, such as speed, engine RPM, and temperature, due to limitations in data transmission and storage within the vehicle's control units.
Innovation Solution
A control system with a bus-based communication link separates output and functional controls, allowing for the storage and transmission of operational information, enabling real-time display and request-based output to the operator, with an information memory for storage and an interface module for data formatting, ensuring timely and accurate information dissemination.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If data is transmitted continuously from functional control to output control, then information availability is improved, but data transmission load and energy consumption increase
Solution Approach 1:
The system implements periodic data transmission at configurable intervals (e.g., every 100ms or 500ms) instead of continuous transmission. The output control requests data at periodic intervals, and the functional control responds by transmitting updated information only when the interval elapses or when critical changes occur, reducing unnecessary data traffic and energy consumption while maintaining adequate information availability.
Solution Approach 2:
The output control actively monitors whether it has received current data and sends requests to the functional control when data is needed or outdated. This feedback mechanism ensures data is transmitted only when necessary, balancing information availability with reduced transmission load and energy usage compared to continuous transmission.
2Loss of time
If data is stored in information memory for later retrieval, then response time to operator requests is improved, but memory requirements and system complexity increase
Solution Approach 1:
The output control pre-loads or caches operational data into its information memory at periodic intervals or upon receiving data from the functional control. This preliminary storage action enables the output control to immediately display or process data when the operator makes a request, eliminating the need for real-time data retrieval from the functional control and significantly reducing response time while keeping the memory requirements manageable.
3Productivity
If multiple data parameters are transmitted together, then communication efficiency is improved, but data processing complexity and transmission bandwidth requirements increase
Solution Approach 1:
The system bundles multiple operational data parameters (e.g., speed, temperature, pressure) into single composite data packets for transmission between functional control and output control. This merging approach improves communication efficiency by reducing the number of separate transmissions required, while the structured packet format minimizes processing complexity compared to handling multiple independent data streams.
Data Source
AI summary
A control system for a motor vehicle comprises an output control unit for outputting data related to the operation of the motor vehicle and an operation control unit spatially separated from the output control unit for generating or providing data related to the operation of the motor vehicle. The output control unit comprises a data storage for storing data related to the operation of the motor vehicle and the data related to the operation of the motor vehicle can be read out of the data storage and outputted by the output control unit.