Vehicle Wiper Control for Predicted Pedestrian Collision
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Solution Overview
Problem
Existing wiper control systems may fail to move the wiper to the stopping position in time before a collision with a pedestrian, leading to a risk of the pedestrian coming into contact with the wiper.
Innovation Solution
A wiper control apparatus that includes a processor configured to switch the operation of the wiper based on its moving direction when a collision with a pedestrian is predicted, allowing the wiper to be promptly moved to a predetermined stopping position by reversing its direction and increasing its speed.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If the wiper is switched to high-speed operation (Hi) when collision with pedestrian is predicted, then the wiper moves faster toward stopping position, but the wiper may not reach the stopping position in time before actual collision occurs
Solution Approach 1:
The wiper control apparatus predicts collision with a pedestrian in advance using collision prediction information, and switches the wiper to high-speed operation before the actual collision occurs. This preliminary action allows the wiper to reach the stopping position in time by utilizing the predicted time window, resolving the contradiction between moving speed and time to reach stopping position.
2Productivity
If the wiper operation is switched depending on moving direction when collision is predicted, then the wiper can be moved more efficiently to stopping position, but the control system becomes more complex
Solution Approach 1:
The wiper control apparatus dynamically adjusts the wiper operation based on the current moving direction of the wiper. When an upward stroke is detected, the control switches to high-speed operation; when a downward stroke is detected, it switches to downward high-speed operation. This dynamic adaptation improves response efficiency without requiring complex additional hardware, as it utilizes the existing wiper motor's bidirectional capability.
Data Source
AI summary
A wiper apparatus for a vehicle reciprocally moves a wiper between a lower reverse position and an upper reverse position by reciprocally rotating a rotational shaft of a wiper motor. A wiper control apparatus for the wiper apparatus includes a processor that controls operation of the wiper. The processor switches operation of the wiper depending on a moving direction of the wiper when the processor receives a notification of prediction that the vehicle will collide with a person while the wiper is operating.