Vehicle Control Unit Updates Across Wired and Wireless Paths
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Solution Overview
Problem
Managing programs for control units on vehicles is challenging when multiple units with different update methods are installed, as existing systems struggle to efficiently coordinate wired and wireless updates.
Innovation Solution
A control device and terminal device configuration that allows for separate update methods for different control units, using request and transmission units to acquire and manage version information and update programs via different means, including wired and wireless communication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple control units with different update methods (wired and wireless) are installed on a vehicle, then the functionality and control capabilities of the vehicle are enhanced, but the management complexity of programs increases significantly
Solution Approach 1:
The system segments the update management process by creating distinct update information structures for wired-updatable control units and wireless-updatable control units. Each segment contains specific fields relevant to its update method (e.g., wired update information includes connector details, wireless update information includes communication protocol details), allowing independent management of each control unit type without interference.
Solution Approach 2:
The terminal device serves as an intermediary that centralizes the management of multiple control units with different update methods. It maintains a unified database of update information for all control units, processes update requests, and coordinates between wired and wireless update operations, thereby reducing the overall management complexity for the user.
2Ease of manufacture
If separate update methods are used for different control units, then the suitability for each specific update scenario is improved, but the operational procedures become more complex
Solution Approach 1:
The terminal device is designed with multi-functionality to handle both wired and wireless update operations through a single unified interface. It can automatically detect the update method required for each control unit, retrieve appropriate update information from its database, and execute the correct update procedure, thereby maintaining ease of operation despite the diversity of update methods.
Solution Approach 2:
The update management system dynamically adapts its behavior based on the specific control unit being updated. The terminal device automatically adjusts its operation mode (wired or wireless), selects appropriate communication protocols, and configures relevant parameters in real-time according to the target control unit's requirements, making the complex system appear simple to the user.
3Measurement precision
If version information management is implemented for all control units, then the accuracy of program tracking is improved, but the information processing load increases
Solution Approach 1:
The system applies local quality by creating tailored update information structures for different control unit types. Wired control units have version information stored with specific fields (connector type, protocol version), while wireless control units have different fields (communication frequency, authentication keys). This localized structuring reduces redundant data storage and processing for each control unit type.
Solution Approach 2:
Version information is segmented into separate manageable categories for wired and wireless control units. The terminal device processes and stores version information in distinct data structures, allowing efficient retrieval and comparison operations. This segmentation reduces the overall information processing load by avoiding the need to handle all version information uniformly.
Data Source
AI summary
A control device mounted on a vehicle and configured in such a manner that a program incorporated in a first vehicle control unit can be updated by first updating means and a program incorporated in a second vehicle control unit can be updated by second updating means that is different from the first updating means, the control device including a request reception unit causing the first updating means to receive an acquisition request of acquiring version information about a version of the program of the second vehicle control unit; and a transmission control unit causing the first updating means to transmit the version information according to the acquisition request. The first and second updating means are means for acquiring an update program from a device outside the vehicle, and one of the first and second updating means acquires a program from a device outside the vehicle via a communication unit.