Driver Override Switching in Vehicle Braking Control
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Solution Overview
Problem
Existing vehicle control systems fail to adequately consider the transition from driver-operated control to system-overridden control, leading to potential safety issues when a driver's ability is impaired.
Innovation Solution
A vehicle control system that includes a control device capable of switching between states where a driver's operation is reflected or not reflected in control, using sensors to detect abnormalities and override driver inputs when necessary, ensuring safe operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the system allows driver override of automated braking, then driver autonomy and ease of operation are improved, but safety is worsened when driver ability is impaired
Solution Approach 1:
The system dynamically adjusts the override capability based on real-time detection of driver abnormality. When the driver is normal, the operator can override the automated braking system. When driver abnormality is detected, the system automatically disables override capability, transitioning from a static permission model to a dynamic one that adapts to the driver's actual state, thereby resolving the contradiction between autonomy and safety.
Solution Approach 2:
The system implements a feedback mechanism where the automated braking control device continuously monitors driver state through abnormality detection. Based on this feedback, the system automatically adjusts whether the operator can disable the braking function. This closed-loop control ensures that safety requirements are met while preserving driver autonomy when appropriate, resolving the contradiction between the two opposing needs.
2Reliability
If the system overrides driver operation when abnormality is detected, then safety is improved, but driver control and adaptability are worsened
Solution Approach 1:
The system employs dynamic state switching based on detected driver abnormality. In the first state (no abnormality), the control device reflects driver operations. In the second state (abnormality detected), the control device operates independently of driver input. This dynamic adaptation resolves the contradiction by adjusting the level of driver control according to actual safety needs rather than maintaining a fixed control mode.
Solution Approach 2:
The system changes the control parameter from 'driver-reflected' to 'driver-independent' based on the detected abnormality state. This parameter switching allows the system to maintain safety through automated control when needed while preserving driver adaptability and control when the driver is capable, thus resolving the contradiction between safety and adaptability.
3Speed
If the system switches to automated control without considering operator state, then response speed is improved, but appropriateness and reliability are worsened
Solution Approach 1:
The system performs preliminary abnormality detection and state assessment before switching control modes. Rather than immediately overriding driver control upon any anomaly, the system first evaluates whether the abnormality actually impacts driving ability. This preliminary assessment ensures that switching to automated control occurs only when appropriate, resolving the contradiction between rapid response and appropriate action.
Data Source
AI summary
A vehicle includes: an operator operable by a driver; a control device configured to control a predetermined control target in accordance with an operation of the operator; and a vehicle control device configured to control the control device. The control device has a first state in which an operation of the operator is reflected in control of the control target and a second state in which an operation of the operator is not reflected in control of the control target, and is configured to switch between the first state and the second state, and the vehicle control device includes circuitry configured to: acquire information related to a travel state of the vehicle; and switch the control device from the first state to the second state according to the acquired travel state.