Vehicle Drive Assist Network Segmentation for Post-Shipment Function Updates
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Solution Overview
Problem
Existing drive-assist-related electronic control systems face increased complexity in system network diagnosis when introducing new functions post-manufacturing, making it difficult to add functions not initially expected at the time of vehicle shipment.
Innovation Solution
A driving control system with a first electronic control apparatus connected to a main network and a second electronic control apparatus via a sub-network, allowing the generation and output of control assist information for executing drive assist functions using sensing information from both sensors, without direct connection to the drive assistant, facilitating the addition of new functions without increasing network complexity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a filtering controller is introduced into the system network to enable function updating, then new functions can be added to the driving control system, but the complexity of system network diagnosis increases
Solution Approach 1:
The patent segments the network into a main network and a sub-network. The sub-network is dedicated to transmitting sensing information between the second electronic control apparatus and the first electronic control apparatus, while the main network handles drive assistant communications. This segmentation isolates the function update path from the main drive assist system, allowing new functions to be added without complicating the overall system diagnosis.
Solution Approach 2:
The first electronic control apparatus acts as an intermediary between the second electronic control apparatus and the drive assistant. It receives sensing information from the second apparatus via the sub-network, processes this information, and outputs control assist information to the main network. This intermediary role allows new sensing capabilities to be integrated without directly modifying the drive assistant or main network architecture.
2Adaptability or versatility
If additional sensors and control apparatuses are connected to the main network, then new drive assist functions can be implemented, but the network complexity and difficulty of maintaining basic functions increase
Solution Approach 1:
The patent divides the network into two separate segments: a main network for drive assistant communications and a sub-network for additional sensing information. The sub-network connects the second electronic control apparatus to the first electronic control apparatus without involving the drive assistant. This segmentation allows new sensing functions to be added through the sub-network while keeping the main network structure simple and maintainable.
3Adaptability or versatility
If the electronic control apparatus is designed to accommodate future functions, then new functions can be added after shipment, but the initial system design and network structure become more complex
Solution Approach 1:
The patent prepares the first electronic control apparatus in advance to receive and process sensing information from additional sensors. The apparatus is pre-configured with the capability to accept inputs from the sub-network and generate control assist information. This preliminary preparation allows new functions to be activated simply by connecting additional sensors to the sub-network, without requiring complex redesign of the main system architecture.
Data Source
AI summary
A drive assistant (700) executes a drive assist function that is a function of a drive assist system. A first electronic control apparatus (401) has a first sensor (501). A second electronic control apparatus (402) has a second sensor (502). The first electronic control apparatus (401) is connected to the drive assistant (700) via a main network (10). The second electronic control apparatus (402) is connected to the first electronic control apparatus (401) via a sub-network (20) having no connection to the drive assistant (700). The first electronic control apparatus (401) outputs, to the main network (10), control assist information generated on the basis of first sensing information acquired by the first sensor (501) and second sensing information acquired by the second sensor (502).