Automated Driving Control With Adaptive Rear Vehicle Recognition
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Solution Overview
Problem
Automated driving systems face challenges in maintaining user convenience by continuing autonomous driving functions without periphery monitoring obligations, particularly when recognition of rear vehicles is interrupted, leading to potential cancellation of automated driving due to stringent conditions.
Innovation Solution
The automated driving control device and program recognize both front and rear vehicles to initiate and continue autonomous traveling control, relaxing recognition conditions after the start of autonomous driving, allowing continuation even if the rear vehicle is no longer detected, thereby easing the conditions for canceling autonomous driving.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the automated driving system maintains stringent recognition conditions for rear vehicles, then safety is improved, but the automated driving function is canceled frequently reducing user convenience
Solution Approach 1:
The patent applies dynamics by making the recognition conditions adaptive rather than static. The control switching unit changes the recognition conditions based on the driving state: when automated driving is not active, stringent conditions are maintained for safety; when automated driving is active and front vehicle recognition is stable, the system transitions to a state where rear vehicle recognition interruptions do not trigger cancellation. This dynamic adjustment resolves the contradiction between safety and user convenience.
Solution Approach 2:
The patent changes the parameters of recognition conditions based on the operational state. Specifically, it modifies the threshold for triggering automated driving cancellation: initially requiring continuous rear vehicle recognition, then relaxing this requirement once automated driving is established and front vehicle conditions are met. This parameter change allows the system to maintain safety during transition while ensuring user convenience during operation.
2Measurement precision
If the system requires continuous recognition of rear vehicle to maintain autonomous driving, then detection accuracy is improved, but the duration of autonomous driving is reduced due to frequent interruptions
Solution Approach 1:
The patent applies preliminary action by establishing front vehicle recognition conditions before relaxing rear vehicle recognition requirements. The control switching unit first confirms that the front vehicle is properly recognized and meets safety criteria, then permits continuation of autonomous driving even if rear vehicle recognition is temporarily lost. This preliminary verification ensures detection accuracy is maintained for critical elements while extending driving duration.
Solution Approach 2:
The patent applies partial action by selectively maintaining stringent recognition requirements only for the front vehicle while relaxing requirements for the rear vehicle once autonomous driving is established. This partial application of detection accuracy standards allows the system to focus computational resources on critical detection (front vehicle) while tolerating temporary loss of non-critical detection (rear vehicle), thereby extending autonomous driving duration without compromising safety.
Data Source
AI summary
By an automated driving control device or a computer-readable storage medium storing an automated driving control program configured to enable traveling of a subject vehicle by an automated driving function, a front vehicle and a rear vehicle that travel in a lane same as a subject vehicle lane where the subject vehicle travels are recognized, and a start of an autonomous traveling control without a periphery monitoring obligation by a driver of the subject vehicle is permitted or determined.