Vehicle Speed Control Device for External Target Detection
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing vehicle speed control systems do not effectively manage the speed of a host vehicle when passing a person or vehicle outside the lane, leading to anxiety for workers or drivers in such situations.
Innovation Solution
A vehicle speed control device equipped with a lane detection unit, target detection unit, and speed control unit that reduces the host vehicle's speed when a target is detected outside the lane, ensuring safe passage without unnecessary deceleration, and includes a notification unit to inform the driver of the speed adjustment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the host vehicle maintains set vehicle speed when passing targets outside the lane, then the vehicle's productivity and travel efficiency are improved, but anxiety is given to construction workers or drivers outside the lane
Solution Approach 1:
The vehicle speed control device dynamically adjusts the vehicle speed based on the presence of targets outside the lane. When a target is detected, the system automatically reduces speed; when no target is present, the vehicle maintains its set speed. This dynamic speed adjustment resolves the contradiction by making the speed adaptable to different situational contexts.
Solution Approach 2:
The system changes the speed parameter conditionally based on target detection. The speed control unit modifies the vehicle speed parameter from the set speed to a reduced speed when targets are detected outside the lane, and restores it when targets are absent. This parameter change approach allows the system to balance productivity and safety concerns.
2Object-affected harmful factors
If the host vehicle decelerates when a target is detected outside the lane, then anxiety given to external targets is reduced, but the vehicle's travel time increases
Solution Approach 1:
The speed reduction is applied periodically or temporarily only during the period when a target is detected outside the lane. The system continuously monitors for targets and applies speed reduction only when necessary, then restores normal speed immediately after the target is no longer present. This periodic application minimizes time loss while still providing the safety benefit when needed.
Solution Approach 2:
The system applies speed reduction as a partial action only when and where needed (when targets are detected), rather than maintaining reduced speed continuously. This partial application of speed reduction limits the time loss to only the necessary duration while still achieving the safety objective for external targets.
3Object-affected harmful factors
If the host vehicle frequently adjusts speed when passing external targets, then safety for external targets is improved, but driver comfort and operation ease deteriorates
Solution Approach 1:
The system uses feedback from the target detection unit to automatically control speed adjustments. The detection unit provides information about targets outside the lane, and the speed control unit responds automatically without requiring driver intervention. This feedback loop resolves the contradiction by automating the speed adjustment process, improving safety while maintaining driver comfort through minimal manual intervention.
Solution Approach 2:
The vehicle speed control device performs self-service by automatically detecting targets and adjusting speed without requiring driver action. The system monitors the environment, makes decisions about speed adjustment, and executes the adjustments autonomously. This self-service capability improves external target safety while preserving driver comfort by eliminating the need for frequent manual speed changes.
Data Source
AI summary
A vehicle speed control device 1 includes a lane detection unit 120 configured to detect a road outside line of a lane on which a host vehicle V is traveling, a target detection unit 121 configured to detect a target that is present outside the road outside line, and a speed control unit 123 configured to control a speed of the host vehicle V such that the host vehicle V passes a lateral side of the target at a speed lower than a speed of the host vehicle V when the target has been detected. After the host vehicle V has passed the lateral side of the target, the speed control unit 123 accelerates the host vehicle V up to the speed when the target has been detected.