Windshield Wiper LED Speed Indicator for Real-Time Status Feedback
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Solution Overview
Problem
Vehicle drivers may be uncertain about the real-time operating speed of windshield wipers or whether they are turned on or off, leading to inconvenience and difficulty in adjusting wiper settings effectively.
Innovation Solution
A light-emitting diode (LED) array is integrated into the vehicle instrument cluster to provide a clear visual indication of wiper settings, including on/off status and speed, through progressive illumination based on the wiper switch position, using transistors and resistors to control LED activation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If no indication mechanism is provided, then the device complexity is reduced, but the driver cannot know the real-time wiper operating speed or on/off status
Solution Approach 1:
The patent uses light-emitting diodes (LEDs) that change their illumination state to indicate different wiper operating conditions. Specifically, the LED array illuminates in different patterns (number of lit LEDs corresponds to wiper speed settings) to provide visual feedback about wiper status and speed, resolving the information loss without complex mechanical indicators
Solution Approach 2:
The patent replaces potential mechanical indication systems with an electrical/optical system using LEDs controlled by transistors and resistors. This electronic indication mechanism provides clear visual feedback while maintaining simplicity, avoiding complex mechanical linkages or moving parts that would increase device complexity
2Loss of information
If the driver checks wiper status frequently, then awareness of wiper settings is improved, but the driver's focus on the road is reduced
Solution Approach 1:
The patent implements a visual feedback system where the LED array continuously displays the current wiper operating status and speed setting. This immediate feedback allows the driver to know the wiper state at a glance without needing to check or interact with the control system, maintaining awareness while keeping eyes on the road
Solution Approach 2:
The LED array provides distinct visual patterns that clearly indicate different wiper speeds and on/off status. The varying illumination patterns create an intuitive visual language that the driver can interpret quickly and accurately without diverting attention from driving tasks
3Measurement precision
If a detailed wiper speed indicator is provided, then the measurement precision of wiper speed is improved, but the device complexity increases
Solution Approach 1:
The patent divides the indication function into discrete segments using multiple individual LEDs in an array. Each LED or group of LEDs represents a specific wiper speed level, providing precise indication of the current speed setting. This segmented approach allows for clear, discrete speed levels to be indicated using simple on/off states of individual LEDs rather than complex analog displays
Solution Approach 2:
The patent uses variations in LED illumination patterns to indicate different wiper speed levels. By controlling which LEDs illuminate and in what patterns, the system provides precise information about wiper speed settings using simple optical changes rather than complex mechanical or electronic displays
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
Enhances driver visibility of wiper settings, allowing for quick and accurate adjustment of wiper speeds, maintaining focus on the road, and requiring minimal resources.
Implementation Method 1
A light-emitting diode (LED) array is integrated into the vehicle instrument cluster to provide a clear visual indication of wiper settings
Data Source
AI summary
A vehicle including a windshield, a wiper, a light-emitting diode (LED) array, and an activation mechanism is disclosed. The wiper may be configured to wipe water on the windshield when the wiper may be activated. The LED array may be configured to indicate a real-time wiper speed associated with the wiper. The activation mechanism may be configured to progressively illuminate the plurality of LEDs based on the real-time wiper speed to indicate the real-time wiper speed.