Forward Collision Avoidance Control in Driving Caution Areas
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Solution Overview
Problem
Current forward collision avoidance systems are designed to operate only when a collision with a pedestrian is certain, which limits their effectiveness in areas requiring active defensive driving, such as children protection zones, where unpredictable situations can occur.
Innovation Solution
A forward collision avoidance system that uses a navigation system, sensors, and a controller to detect pedestrians and determine if the vehicle has entered a driving caution area, issuing warnings and adjusting engine torque and braking accordingly based on the expected time to collision, with different reference times for warning, partial braking, and complete braking.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the forward collision avoidance system operates only when collision is certain (satisfying specific operating conditions), then false alarms and false braking are prevented, but the system utilization is lowered in children protection zones requiring active defensive driving
Solution Approach 1:
The patent applies dynamics by making the operating conditions of the forward collision avoidance system adjustable based on the driving environment. The controller dynamically changes the operating conditions from a first set (stricter, for general areas) to a second set (more lenient, for children protection zones) based on location information from the navigation system. This allows the system to adapt its sensitivity and activation thresholds to match the risk level of the current environment, thereby improving system utilization in high-risk zones while maintaining reliability in general areas.
2Productivity
If the operating conditions are relaxed to detect more potential risks in children protection zones, then system utilization and safety are improved, but false alarms and false braking may increase
Solution Approach 1:
The patent applies local quality by implementing different operating conditions for different geographic locations. The controller determines the current location using the navigation system and applies the first operating conditions in general areas while applying the second operating conditions specifically in children protection zones. This localized approach allows the system to be more sensitive and proactive in high-risk zones without increasing false alarms in general areas, as each location receives appropriately tailored detection thresholds and parameters.
3Reliability
If the system proactively alerts drivers in high-risk zones before collision is certain, then preventive safety is improved, but the system may trigger unnecessary warnings
Solution Approach 1:
The patent applies preliminary action by enabling the forward collision avoidance system to operate proactively in children protection zones before a certain collision is detected. The second operating conditions allow the system to issue warnings and initiate braking maneuvers at earlier stages when potential risks are detected, rather than waiting until collision is certain. This preliminary action gives drivers more time to respond to potential hazards in high-risk zones, improving preventive safety while the location-based conditioning helps filter out unnecessary warnings.
Data Source
AI summary
The present document provides an apparatus for assisting driving of a host vehicle that operates according to an operating condition to prevent a forward collision of a host vehicle, the apparatus comprising: a navigation system for providing location information of the host vehicle; a sensor for detecting forward of the host vehicle and the presence or absence of a pedestrian in front of the host vehicle; and a controller communicatively connected to the sensor, wherein the controller is configured to determine whether the host vehicle has entered a driving caution area based on at least one of location information of the host vehicle and forward information of the host vehicle, and mitigate an operating condition of the forward collision avoidance system if the host vehicle has entered the driving caution area and the pedestrian is present in the driving caution area.