Automatic Sunvisor Assembly Using Light Sensors and Servo Control
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Manual adjustment of sunvisors while driving is inconvenient and can compromise driving safety, as it requires drivers to divert their attention from the steering wheel.
Innovation Solution
An automatic sunvisor assembly with ambient light sensors and high-torque servo motors that adjust the sunvisors to block sunlight without manual intervention, powered by the vehicle's battery, and equipped with a speaker to alert occupants of the movement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If manual operation method is applied where user directly holds and moves the sun visor, then the sun visor can be adjusted to block sunlight, but the driver's visibility is compromised and driving safety is reduced
Solution Approach 1:
The sun visor system performs self-adjustment using ambient light sensors to detect sunlight intensity and direction, automatically positioning the visor to block sunlight without requiring manual driver intervention. The system serves itself by using environmental light data to control motorized movement, eliminating the need for the driver to divert attention from the road.
Solution Approach 2:
The manual mechanical adjustment system is replaced with an automated electromechanical system. Ambient light sensors detect sunlight conditions, a processor analyzes the data, and servo motors execute the visor movement, substituting the purely mechanical manual operation with an intelligent automated control system that enhances safety.
2Reliability
If automatic sunvisor assembly with sensors and motors is implemented, then driving safety is enhanced by eliminating manual adjustment, but device complexity increases
Solution Approach 1:
The ambient light sensors serve multiple functions: they detect sunlight intensity for visor positioning, provide data for processor analysis, and enable the system to adapt to varying lighting conditions. This multi-functionality justifies the added complexity by providing comprehensive automated control rather than simple manual operation.
Solution Approach 2:
The system continuously monitors and responds to changes in ambient light parameters (intensity and direction), adjusting the visor position dynamically. This parameter-based control approach allows the system to adapt to varying sunlight conditions automatically, making the complexity worthwhile by providing real-time safety enhancement.
3Measurement precision
If high-torque servo motors are used to move the sun visor automatically, then the sun visor can be positioned accurately according to sunlight direction, but the construction complexity increases
Solution Approach 1:
The system uses ambient light sensors to continuously monitor sunlight conditions and provides feedback to the processor, which then adjusts the servo motor positioning accordingly. This closed-loop feedback mechanism ensures accurate visor positioning by constantly comparing the current light conditions with the desired visor position and making real-time adjustments.
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 driving safety by allowing sunvisors to adjust automatically, reducing the risk of accidents and ensuring continuous visibility for drivers without manual operation, while also alerting passengers to adjust their head positions.
Implementation Method 1
at least one ambient light sensor positioned inside the vehicle, and adapted to sense the intensity of sunlight
Implementation Method 2
at least one high-torque servo motor connected to each of the at least one sunvisor to move the at least one sunvisor
Data Source
AI summary
An automatic sunvisor assembly for vehicle is disclosed. The automatic sunvisor assembly comprises sunvisor(s) positioned over the front seats of the vehicle, ambient light sensor positioned inside the vehicle adapted to sense the intensity of sunlight; a processor to collect and compare the intensity of sunlight sensed by the ambient sensors in real time; and two high-torque servo motors connected to each of the sunvisors to move the at least one sunvisor. The processor identifies the ambient light sensor sensing higher intensity of sunlight, generates signals, and transmits signals to the high-torque servo motor, and the signals received by the high-torque servo motor determines a direction of movement of the sunvisor.