Vehicular Control Information Update Grouping and Abnormality Detection
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Solution Overview
Problem
Existing vehicular information communication systems struggle to prevent the spread of abnormalities caused by updates in control information across vehicles and fail to distinguish between common and vehicle-specific abnormalities, leading to potential safety issues.
Innovation Solution
A vehicular information communication system that divides vehicles into groups and performs controlled transmission of control information, suspending updates if abnormality rates exceed a predetermined threshold, allowing the server to differentiate between common and vehicle-specific issues by monitoring responses from on-vehicle devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If control information is transmitted to all vehicles without restriction, then update efficiency is high, but abnormality spreads across multiple vehicles
Solution Approach 1:
The patent divides vehicles into multiple groups and performs transmission processes in turns for each group. This segmentation allows the system to maintain high update efficiency by processing multiple vehicles systematically while preventing abnormality spread by isolating issues to specific groups. When abnormality is detected in one group, only that group is affected, not all vehicles.
Solution Approach 2:
The patent implements a feedback mechanism where the server collects response information from on-vehicle devices after transmitting control information. Based on this feedback regarding abnormality presence, the server determines whether to continue or suspend transmission to subsequent groups. This feedback loop enables the system to maintain reliability by stopping propagation when issues are detected, while preserving productivity by continuing transmission when no abnormalities occur.
2Reliability
If control information transmission is suspended frequently to check for abnormalities, then reliability is improved, but update efficiency decreases
Solution Approach 1:
The patent applies partial action by performing abnormality checks only on a portion of vehicles (one group at a time) rather than checking all vehicles before each transmission. The server transmits control information to one group, checks for abnormalities, and based on the result, decides whether to continue to the next group. This approach maintains reliability through systematic checking while preserving update efficiency by avoiding redundant checks on all vehicles.
3Speed
If all vehicles receive control information updates simultaneously, then update speed is fast, but distinction between common and vehicle-specific abnormalities is lost
Solution Approach 1:
By dividing vehicles into groups and transmitting control information to each group in turn, the patent maintains fast update speed through systematic processing while preventing loss of abnormality distinction information. When abnormality occurs, the segmented approach allows the server to identify whether it is common to multiple groups or specific to one group, preserving the information needed to distinguish between common and vehicle-specific issues.
Solution Approach 2:
The patent introduces the group structure as an intermediary between individual vehicles and the server. This intermediary layer enables the server to maintain fast update speed by processing groups efficiently while preserving the ability to distinguish abnormality types by analyzing response patterns across different groups. The group structure acts as a mediator that retains diagnostic information.
Data Source
AI summary
A server divides a plurality of vehicles into groups, transmits control information to an on-vehicle information device of individual vehicles belonging to a group to which a processing turn of the transmission process has come, and receives responses indicating presence or absence of abnormality due to update of on-vehicle devices using the control information from the on-vehicle information device of each vehicle. The server performs the transmission process of the control information toward a group having a following turn when responses indicating presence of abnormality are a predetermined reference value or less, and, suspends transmission processes of control information toward groups having following and subsequent turns when the responses indicating presence of abnormality are more than the predetermined reference value.