Vehicle Sun Visor Lamp Control via Speed and Mirror Sensors
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Solution Overview
Problem
Existing vehicle sun visor lighting systems can distract drivers due to manual operation and frequent switching, leading to decreased concentration and safety while driving, as the lights may be turned on unnecessarily when the vehicle is in motion or when the sun visor is raised.
Innovation Solution
An automatic lighting system that integrates a sun visor switch, mirror cover sensor, mode setting unit, gateway, auto-light sensor, and control unit to automatically control the interior lamp based on vehicle speed and ambient brightness, ensuring the lamp is turned off while driving and on when stopped, with adjustable brightness for day and night conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If the interior lamp is manually controlled to turn on when the sun visor is lowered, then the mirror can be used in dark conditions, but the lamp may distract the driver when the vehicle is running
Solution Approach 1:
The control unit receives vehicle speed information in advance and determines the vehicle state (running or stopped) before controlling the lamp. When the vehicle is running, the lamp is prevented from turning on or is turned off immediately, avoiding driver distraction. This preliminary check of vehicle state ensures the lamp only illuminates when the vehicle is stationary.
Solution Approach 2:
The system continuously monitors vehicle speed through the gateway and uses this feedback to automatically adjust the lamp state. When the vehicle stops, the lamp turns on automatically; when the vehicle runs, the lamp turns off. This closed-loop feedback mechanism eliminates manual control and prevents driver distraction while ensuring illumination when needed.
2Ease of operation
If the sun visor is frequently raised and lowered based on mirror usage, then the mirror can be accessed when needed, but the frequent operation disrupts the driver's concentration
Solution Approach 1:
The system automatically determines whether the lamp should be on or off based on vehicle speed and mirror cover sensor signals, without requiring driver intervention. The control unit self-adjusts the lighting system according to actual usage conditions, freeing the driver from repeated manual operations and maintaining concentration.
3Illumination intensity
If the interior lamp is turned on when the sun visor is lowered, then the mirror can be seen in dark conditions, but additional switch operation is required which degrades driver concentration
Solution Approach 1:
The system merges multiple control functions into a unified automatic control mechanism. The control unit integrates vehicle speed information, mirror cover sensor signals, and lamp control into a single automated system. This eliminates the need for separate switch operations and reduces system complexity from the driver's perspective.
Solution Approach 2:
The lighting system serves itself by automatically turning on or off based on vehicle state and mirror usage detection. The control unit processes sensor inputs and adjusts lamp illumination without requiring driver intervention, simplifying the user interface and maintaining driver concentration.
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
This solution prevents driver distraction by automatically managing the sun visor lamp's operation, maintaining concentration and safety by ensuring the lamp is only active when needed, and allowing the sun visor to function effectively as a light blocker when not in use.
Implementation Method 1
an auto-light sensor configured to sense ambient brightness of the vehicle and determine day or night
Implementation Method 2
an interior lamp that has at least one light-emitting diode (LED)
Data Source
AI summary
An automatic lighting system and method for a vehicle are provided and the automatic lighting system includes a sun visor switch operated by a controller and configured to be turned on when a sun visor is lowered and turned off when the sun visor is raised. A mirror cover sensor detects an opened state or a closed state of a mirror cover while the sun visor is lowered, and the mirror cover covers a mirror attached to the sun visor. In addition, an interior lamp that includes at least one light-emitting diode (LED) is operated by the controller to be turned off when a vehicle runs and turned on when the vehicle stops while the mirror cover is opened.