Detachable Wire Harness Relay Board for In-Vehicle Protocol Scaling
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Solution Overview
Problem
The increasing number of electronic devices in vehicles leads to a higher relay processing load for in-vehicle devices, which can impede other processing tasks, and requires frequent changes in communication specifications due to vehicle expansions or model changes, necessitating improvements in scalability and processing efficiency.
Innovation Solution
A wire harness with a detachable circuit board and relay unit that relays communication between multiple communication lines and the in-vehicle device, capable of protocol conversion and voltage conversion, reducing the processing load on the in-vehicle device and enhancing scalability by allowing changes to the wire harness rather than the device itself.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If an in-vehicle device relays communication between multiple communication lines, then communication relay function is achieved, but the relay processing load increases and impedes other processing tasks
Solution Approach 1:
The patent divides the in-vehicle system into two functional parts: a gateway device that performs relay processing and a control device that performs other processing tasks. This segmentation allows the gateway to handle communication relay while the control device focuses on other functions, preventing processing impediment.
Solution Approach 2:
The relay processing function is extracted from the control device and placed in a dedicated gateway device. This extraction removes the relay processing load from the control device, allowing it to perform other tasks without impediment while the gateway handles communication relay.
2Adaptability or versatility
If the number of electronic devices in a vehicle increases, then vehicle functionality expands, but the in-vehicle device needs to be changed due to communication specification changes
Solution Approach 1:
The gateway device is designed as a universal interface that can handle multiple communication protocols and specifications. It provides a standardized interface to the control device while adapting to different communication lines with varying protocols, allowing the control device to remain unchanged even when communication specifications change.
Solution Approach 2:
The gateway acts as an intermediary between the control device and various communication lines with different protocols. It translates and adapts communication between different protocols, allowing the control device to communicate with diverse electronic devices without requiring changes to the control device itself.
Data Source
AI summary
Provided are a wire harness and a communication relay method with which effects such as reduction in the relay processing load of an in-vehicle device or improvement in the scalability of an in-vehicle device can be expected. A wire harness according to an embodiment includes a circuit board detachably mountable to an in-vehicle device, a plurality of communication lines connected to the circuit board, and a relay unit provided on the circuit board and configured to relay communication between the plurality of communication lines and to relay communication between the communication lines and the in-vehicle device.