Vehicle Door Collision Avoidance via Haptic Feedback and Stop
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Solution Overview
Problem
In crowded environments, the risk of collisions between a vehicle and external objects increases when its door is being opened, as existing systems fail to effectively prevent or mitigate these collisions.
Innovation Solution
A vehicle equipped with a rotatable door featuring a door stop assembly and haptic feedback assembly, controlled by processors that compute time-to-collision and activate the assemblies to arrest door opening and provide vibrations through the handle, thereby preventing collisions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a door stop assembly is activated to arrest door opening, then collision risk is reduced, but the door opening operation is interrupted
Solution Approach 1:
The door stop assembly is activated before the door can complete its opening motion when a collision risk is detected. The system preemptively applies the door stop mechanism to prevent the harmful collision before it occurs, sacrificing the door opening operation to ensure safety.
Solution Approach 2:
The haptic feedback assembly provides early warning to the user before the door stop is fully engaged. This preliminary action alerts the user to the collision risk and the impending door stop activation, allowing the user to react before the door opening is arrested.
2Reliability
If haptic feedback assembly vibrates the handle, then user awareness is increased, but additional energy consumption occurs
Solution Approach 1:
The haptic feedback assembly activates in periodic pulses rather than continuous operation. The vibration is triggered specifically when collision risk is detected and deactivated when the risk passes, providing user awareness only when necessary and minimizing energy consumption.
3Reliability
If door stop and haptic feedback assemblies are simultaneously activated, then collision prevention is enhanced, but system complexity increases
Solution Approach 1:
The door stop assembly and haptic feedback assembly are integrated into a unified door safety system controlled by a single processor. The processor monitors collision risk and simultaneously controls both the door stop activation and haptic feedback, merging two functions into one coordinated system rather than separate independent systems.
Solution Approach 2:
The processor serves multiple functions: it monitors the door opening state, detects collision risk, controls the door stop assembly, and activates the haptic feedback assembly. This multi-functionality reduces the need for separate dedicated controllers for each component, simplifying the overall system architecture despite the multiple functions being performed.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution effectively reduces the risk of collisions by arresting door opening and alerting the user through haptic feedback, ensuring safer operation in crowded conditions.
Implementation Method 1
a haptic feedback assembly arranged to vibrate the handle
Data Source
AI summary
A vehicle includes: (a) a rotatable door including: a door stop assembly configured to arrest opening of the door; a rotatable handle; a haptic feedback assembly arranged to vibrate the handle; (b) processor(s) configured to simultaneously activate the door stop and haptic feedback assemblies. The haptic feedback assembly is disposed within the rotatable handle. The processor(s) are configured to: compute a time-to-collision, and run the haptic feedback assembly at a level based on the time-to-collision.