Vehicle Wiper Control Sensitivity Adjustment
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Solution Overview
Problem
Conventional vehicle wiper control systems face delays in initiating or stopping wiping actions when transitioning between covered and uncovered road conditions due to incorrect light sensitivity adjustments, affecting driver visibility and wiper performance.
Innovation Solution
A wiper control device that includes a day/night detecting device and a moisture detection system, which adjusts wiping sensitivity based on detected conditions and introduces a delay when switching between day-like and night-like sensitivities, ensuring more accurate and timely wiping actions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the wiper control system uses light level detection to adjust wiping sensitivity, then wiping performance is improved under different lighting conditions, but delays occur when transitioning between covered and uncovered road areas
Solution Approach 1:
The system performs preliminary action by detecting light level changes in advance and proactively adjusting wiping sensitivity before the vehicle actually enters or exits a covered area. The light detection device monitors lighting conditions continuously, and the control device preemptively switches between day-like and night-like sensitivity modes, preventing the delay that would occur if adjustment waited until the transition was complete.
Solution Approach 2:
The system applies dynamics by making the wiping sensitivity adjustable and adaptive rather than fixed. The control device dynamically switches between day-like sensitivity and night-like sensitivity based on real-time light level detection, allowing the system to optimize its response characteristics for current driving conditions and eliminate delays associated with static sensitivity settings.
2Reliability
If the wiper control system increases sensitivity for night-like conditions, then wiping is more likely to be initiated, but wiping continues unnecessarily when entering covered areas
Solution Approach 1:
The system uses dynamics to switch wiping sensitivity based on detected light conditions. When day-like conditions are detected (such as when entering a covered area), the control device switches from night-like sensitivity to day-like sensitivity, which reduces unnecessary wiping actions while maintaining reliable wiping initiation when actually needed.
Solution Approach 2:
The system implements feedback by continuously monitoring light levels through the light detection device and using this information to adjust wiping sensitivity in real-time. This feedback mechanism ensures that high sensitivity is applied only when appropriate (night-like conditions) and reduces sensitivity when unnecessary (day-like conditions), optimizing both wiping initiation and efficiency.
Data Source
AI summary
A wiper control device for a vehicle with a wiper includes a day/night detecting device for detecting whether the vehicle is in day-like or night-like conditions. The device also includes a moisture detection device that detects a quantity of moisture on the vehicle and a controlling device that controls the wiping action of the wiper based on a wiping sensitivity to the quantity of moisture detected. The controlling device adjusts the wiping sensitivity between night-like wiping sensitivity and day-like wiping sensitivity. The controlling device adjusts wiping sensitivity to night-like wiping sensitivity when the day/night detecting device detects night-like conditions and to day-like wiping sensitivity when the day/night detecting device detects day-like conditions. Additionally, when the day/night detecting device detects a change between day-like and night-like conditions, the controlling device delays switching between night-like and day-like wiping sensitivity for a predetermined delay time.