In-Vehicle Control Device Occupant Data Recording

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Solution Overview

Problem

Existing in-vehicle driving assist devices struggle to account for the preferences and behaviors of all occupants, leading to unforeseen vehicle control actions that can result in occupant distrust, as they lack data on occupant operations and state changes during events like sudden braking or sharp turns.

Innovation Solution

An in-vehicle control device and recording system that captures data on vehicle status and occupant operations before, during, and after specific events, using a local network to record and store data on nonvolatile memory, allowing for the analysis of occupant reactions to vehicle control actions.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If driving assist device controls vehicle based on determined danger degree, then vehicle safety is improved, but occupant trust deteriorates due to unexpected control behaviors

Engineering Contradiction:

Improvevehicle safetyVSAvoidoccupant preference data

Core Design Contradiction:

ReliabilityVSLoss of information

Solution Approach 1:

The system performs preliminary actions by continuously recording occupant operations and state changes in storage units before events occur. When an event is detected, the system can immediately retrieve relevant pre-recorded data without interruption, ensuring both safety response and data acquisition are maintained simultaneously.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The patent introduces data recording and retrieval mechanisms as intermediaries between the driving assist device and occupant behavior analysis. These intermediaries capture and preserve occupant information without interfering with the primary safety control functions, allowing developers to analyze occupant preferences while the system maintains its safety-critical operations.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Device complexity

If driving assist device operates without occupant data, then system simplicity is maintained, but ability to account for occupant preferences deteriorates

Engineering Contradiction:

Improvesystem simplicityVSAvoidoccupant preference adaptation

Core Design Contradiction:

Device complexityVSAdaptability or versatility

Solution Approach 1:

The system segments data handling into distinct functional modules: recording units for capturing occupant operations, storage units for preserving data, event detection units for identifying triggers, and retrieval units for accessing relevant information. This segmentation allows each component to perform its function independently with clear interfaces, maintaining system simplicity while enabling comprehensive occupant data collection and analysis capabilities.

Inventive Principle:

Principle #1Segmentation

Data Source

PatentUS10102696B2In-vehicle control device and in-vehicle recording system

Publication Date: 2018.10.16 TOYOTA JIDOSHA KK

AI summary

An in-vehicle control device includes a recording unit that sequentially records first data transferred through an in-vehicle local network; a data acquisition unit that acquires second data relating to an event from a portion of the first data generated within a first time before occurrence of the event and from another portion of the first data recorded within a second time after occurrence of the event; a generation unit that generates third data when a specified operation or change in state of an occupant occurs by elapse of a third time after occurrence of the event; a first holding unit that holds the second data; a second holding unit that holds the third data; a nonvolatile memory having a first and a second recording regions; and a data control unit that records the second data on the first recording region and the third data on the second recording region.