Vehicular Control Device Gear Shift Data Prioritization
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Solution Overview
Problem
In vehicles with automatic gear shift devices, important control state information during gear shifts can be overshadowed by less significant events, making it difficult to accumulate and prioritize data from higher importance events.
Innovation Solution
A vehicular control device that stores and transmits vehicle control state information only when the rate of change in acceleration during gear shifts exceeds a predetermined threshold, ensuring that data from more critical events is prioritized and sent to an external server for accumulation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If all gear shift events are accumulated regardless of importance, then the quantity of accumulated data increases, but important control state information becomes buried in less important events
Solution Approach 1:
The patent applies local quality by differentiating the treatment of gear shift events based on their importance. Instead of uniformly accumulating all events, the system selectively accumulates only those events that meet a predetermined importance criterion (rate of change in acceleration threshold). This allows the system to concentrate storage resources on high-importance events while filtering out less significant ones, thereby preventing important information from being buried in a large volume of less important data.
2Measurement precision
If a threshold for rate of change in acceleration is set to identify important events, then important events are prioritized for storage, but some important events might be missed if the threshold is too high
Solution Approach 1:
The patent employs parameter changes by utilizing the rate of change in acceleration as a dynamic parameter to identify important gear shift events. The system monitors changes in acceleration during gear shifts and compares them against a predetermined threshold. This approach allows the system to adaptively identify significant events based on their dynamic characteristics rather than using static criteria, improving both the precision of event identification and the reliability of detecting truly important events.
Data Source
AI summary
A vehicular control device that is mounted in a vehicle including an automatic gear shift device is configured to store vehicle control state information including a control state of the vehicle in a predetermined gear shift status when a rate of change in acceleration in the predetermined gear shift status at the time of gear shift is greater than a rate of change in acceleration in the predetermined gear shift status in the past. Accordingly, it is possible to store and accumulate vehicle control state information in a predetermined gear shift status with a higher importance out of predetermined gear shift statuses occurring at the time of gear shift.