Vehicle Stop Support System Emergency Driver Abnormality
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Solution Overview
Problem
Current vehicle stop support systems lack the ability to effectively utilize high-accuracy geographic maps and vehicle-mounted cameras to quickly and safely stop a vehicle in emergency situations, potentially leading to collisions and inadequate rescue operations.
Innovation Solution
A vehicle stop support system that includes an abnormality detection module, target time period setting, candidate detection, required time estimation, and vehicle control to identify and navigate to a safe stop point, ensuring the vehicle stops within a predetermined time frame while minimizing the risk of rear-end collisions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If the vehicle stops immediately upon detecting driver abnormality, then the response time is reduced and rescue operation can start quickly, but the vehicle may stop in unsafe locations with poor visibility or high collision risk
Solution Approach 1:
The system dynamically adjusts the stop decision based on real-time evaluation of multiple factors including abnormality urgency, vehicle speed, location safety, and weather conditions. The stop determination unit continuously updates the stop determination value as the vehicle approaches candidate locations, allowing the system to adapt between immediate stop and delayed stop decisions.
Solution Approach 2:
The system changes the threshold parameter for stop determination based on the urgency level of detected abnormalities. For high-urgency cases like heart attacks, the stop determination value threshold is set lower to trigger faster stopping. For low-urgency cases, the threshold is higher to allow evaluation of more candidate locations and safer stopping conditions.
2Speed
If the vehicle travels at high speed to reach stop points quickly, then the response time is reduced, but the risk of collision with following vehicles increases
Solution Approach 1:
The system dynamically adjusts vehicle speed based on real-time conditions including distance to stop points, weather conditions, and detected abnormalities. The vehicle control unit reduces speed when approaching stop points or when following vehicles are detected, and maintains higher speed when safe to do so, optimizing both response time and safety.
Solution Approach 2:
The system uses feedback from the following vehicle detection unit and weather information acquisition unit to continuously adjust speed decisions. When following vehicles are detected or weather conditions deteriorate, the system receives feedback to reduce speed or select alternative stop points, preventing collisions while maintaining efficient response.
3Loss of time
If the system sets a short target time period for stopping, then the vehicle stops quickly for high-urgency abnormalities, but the number of available stop point candidates is reduced
Solution Approach 1:
The system changes the target time period parameter based on the urgency level of detected abnormalities. For high-urgency cases, a short target time period is set to ensure quick stopping. For low-urgency cases, a longer target time period is set to allow the vehicle to evaluate and reach multiple candidate stop points, providing more options for safe stopping locations.
Data Source
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AI summary
Provided is a vehicle stop support system capable of supporting vehicle stop so as to further contribute to rescue of a driver in an emergency condition. The vehicle stop support system (1) comprises: an abnormality detection part (51) for detecting a physical abnormality of a driver; a target time period setting part (53) for setting a target time period based on the abnormality detected by the abnormality detection part (51); a candidate detection part (55) for detecting a plurality of stop point candidates which exist in a traveling direction of a vehicle (2); a required time period estimation part (57) for estimating a time period required to reach each of the stop point candidates; and a stop point setting part (67) for setting a stop point, wherein the stop point setting part (67) is operable to set the stop point from one or more of the plurality of stop point candidates each satisfying a condition that the required time estimated with respect thereto is equal to or less than the target time period.