Travel Control Apparatus Driver Abnormality Evacuation
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Solution Overview
Problem
Conventional travel control systems face challenges in accurately determining driver difficulty, leading to unstable vehicle states before automatic evacuation, as they require a significant interval between abnormality detection and intervention, potentially causing unsafe driving conditions.
Innovation Solution
A travel control apparatus and method that includes an abnormality information acquisition section, a status determination section, and an evacuation control section, which initiates driving assistance, such as lane departure prevention, upon detecting driver abnormality, ensuring stable vehicle control before automatic evacuation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If an interval of several seconds is required between abnormality detection and determination of driving difficulty, then the accuracy of driver condition determination is improved, but the vehicle may be in an unstable traveling state before automatic evacuation starts
Solution Approach 1:
The system performs preliminary actions during the interval between abnormality detection and driving difficulty determination by activating driving assistance control. This includes providing notifications to the driver and preparing the automatic evacuation system in advance, so that when the determination is made, the vehicle is already in a controlled state ready for safe evacuation.
2Reliability
If driving assistance control is activated during the interval between abnormality detection and driving difficulty determination, then the vehicle traveling stability is improved, but the system complexity increases
Solution Approach 1:
The control system is segmented into distinct functional modules: abnormality detection module, driving assistance control module, and automatic evacuation module. Each module operates independently but coordinates with others, allowing the system to manage complexity through modular design while maintaining stable vehicle control during the transition interval.
3Loss of time
If the interval between abnormality detection and automatic evacuation is shortened, then the response time is improved, but the risk of incorrect determination increases
Solution Approach 1:
The system maintains continuous monitoring and assessment of driver condition throughout the process. Instead of a single determination point, the system continuously evaluates abnormality data, maintains driving assistance control throughout the interval, and performs ongoing assessments to ensure accurate determination while minimizing response time.
Data Source
AI summary
A travel control apparatus includes: an abnormality information acquisition section that acquires information indicating that an abnormality of a driver of a vehicle is detected; a status determination section that makes a determination that the driver is in a driving difficulty state, when the abnormality of the driver is detected continuously; and an evacuation control section that initiates an automatic evacuation control stopping automatically the vehicle when the status determination section makes a determination that the driver is in the driving difficulty state. The travel control apparatus further includes an assistance control section that initiates a driving assistance control during an interval from when the abnormality is detected to when the driving difficulty state is determined; the driving assistance control includes at least activating a lane departure prevention function of the vehicle.