Vehicle Relay Device Anomaly Detection Feedback Loop
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Relay devices in onboard communication systems fail to detect errors in relay information, leading to incorrect communication frame relay between plural relay devices installed in a vehicle, which affects normal vehicle operation.
Innovation Solution
A first relay device and a second relay device are designed with identification and notification sections to detect anomalies in relay information by identifying the relay target bus based on destination address information and outputting an anomaly notification signal when errors occur, allowing for error detection and recovery of erroneous relay information.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If relay devices relay communication frames using stored relay information, then communication efficiency is improved, but error detection capability deteriorates
Solution Approach 1:
The patent implements a feedback mechanism where relay devices send anomaly notification signals to transmitting relay devices when errors are detected in relay information. The transmitting relay device receives these notifications and can recover its relay information, creating a closed-loop error detection and correction system that maintains both communication efficiency and reliability.
2Speed
If relay devices store and use relay information for forwarding frames, then relay speed is improved, but accuracy of relay information deteriorates
Solution Approach 1:
The patent employs preliminary action by having relay devices proactively detect anomalies in their relay information and notify transmitting devices before errors cause communication failures. This advance detection allows the transmitting relay device to recover its relay information beforehand, ensuring both fast relay operation and high accuracy.
3Adaptability or versatility
If multiple relay devices are installed in the vehicle, then communication versatility is improved, but error detection capability deteriorates
Solution Approach 1:
The patent merges the error detection capabilities across multiple relay devices by implementing a notification mechanism where any relay device can detect anomalies in information received from other relay devices. This collective detection approach maintains communication versatility while enhancing overall error detection capability through system-wide monitoring.
Data Source
AI summary
A first relay device for installation at a vehicle, the first relay device comprising, a first memory and a first processor coupled to the first memory. The first processor being configured to receive a communication frame transmitted from another relay device. The first processor being configured to based on first relay information, in which destination address information expressing a destination address of a communication frame and a relay target bus are associated with each other, and based on the destination address information included in the received communication frame, identify the relay target bus. The first processor being configured to in a case in which the relay target bus of the received communication frame is not identified, output an anomaly notification signal indicating an anomaly to the other relay device.