Vehicular Action Data Record Apparatus Series Independent Segmentation
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Solution Overview
Problem
Existing vehicular data record apparatuses mix series and independent vehicle data, making it difficult to investigate the true cause of anomalous vehicle actions due to changes in archive blocks during sudden changes.
Innovation Solution
A vehicular action data record apparatus that uses multiple archive areas to record action data sets in a predetermined order, distinguishing between series and independent data by time intervals and overwriting earliest data when intervals exceed a predetermined period.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the archive destination is changed into a different archive block only when an action sudden change arises, then the vehicle data at the time of the action sudden change is recorded, but a series of vehicle data and independent vehicle data are recorded in a mixed state, making it difficult to investigate the true cause
Solution Approach 1:
The patent divides the storage system into multiple archive blocks (first archive block and second archive block) and segments the recording logic based on time intervals. When the time interval between adjacent action sudden changes is within a predetermined period, data is recorded in the first archive block as a series; when it exceeds the period, data is recorded in the second archive block as independent events. This segmentation prevents mixing of series and independent data, resolving the contradiction between reliable cause investigation and data organization clarity.
2Quantity of substance
If vehicle data are recorded in all archive blocks, then complete data coverage is achieved, but when new vehicle data needs to be recorded, the oldest data is overwritten, potentially losing important historical information
Solution Approach 1:
The patent establishes a predetermined time period threshold in advance to distinguish between series data and independent data. This preliminary classification allows the system to proactively direct data to appropriate archive blocks before overwriting occurs, ensuring that historically important data (independent events with long intervals) are preserved in the second archive block while maintaining complete data coverage across both blocks.
3Quantity of substance
If multiple archive blocks are used to store data, then data capacity is increased, but it becomes difficult to manage and differentiate between series and independent data
Solution Approach 1:
The patent uses the time interval parameter as a critical threshold to determine data classification and storage location. By changing the recording destination based on whether the time interval is within or exceeds the predetermined period, the system manages multiple archive blocks with simple, clear rules. This parameter-based approach increases storage capacity while maintaining manageable complexity through straightforward conditional logic.
Data Source
AI summary
When anomalous vehicle actions occur in a vehicle multiple times, it is determined whether each action data is included in a series of action data sets that are closely related mutually or an irrelevant independent action data set. When it is included in the series of action data sets, the ECUs record the series of action data sets in respective own memories according to a predetermined recording order. In contrast, when it is included in the independent action data set, an earliest ECU that is earliest in the recording order records the action data by overwriting its own memory. In this case, the earliest ECU transmits an instruction to other ECUs to delete all past action data that are recorded in own memories of the other ECUs.