Vehicle Door Entry System Using Puddle Lamp Light Sensor
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current vehicle door systems require manual operation or remote control activation for opening, which may not be convenient for users, especially when accessing the driver or passenger seats.
Innovation Solution
A door entry system that includes a puddle lamp, a light sensor, and a controller to detect user input via reflected light, activating a motor actuator to open the door automatically when a user enters the puddle light with a door open command, allowing for hands-free operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If manual operation or remote control activation is used for opening vehicle doors, then the door opening function is reliable, but the ease of operation is reduced and user convenience is compromised
Solution Approach 1:
The patent replaces manual mechanical door handle operation with an optical detection system. The puddle lamp and light sensor detect reflected light patterns to automatically trigger door opening, substituting the mechanical pulling action with an automated optical-mechanical system that enhances convenience while maintaining reliability through multiple detection parameters
Solution Approach 2:
The door system performs self-service by automatically detecting user presence and intent through the puddle lamp light reflection pattern, then autonomously activating the door actuator without requiring manual handle operation or separate remote control activation, making the system serve itself in the door opening function
2Ease of operation
If automatic door opening is implemented, then user convenience is enhanced, but the risk of unauthorized or accidental activation increases
Solution Approach 1:
The system employs feedback mechanisms where the light sensor continuously monitors reflected light from the puddle lamp, and the controller processes this feedback signal to determine user intent. The feedback loop includes analyzing light reflection patterns, duration, and intensity to distinguish between intentional door opening requests and accidental exposures, thereby maintaining reliability while enabling automatic operation
Solution Approach 2:
The puddle lamp is activated in advance to create the light field for detection before the user actually intends to open the door. This preliminary action establishes the detection environment, allowing the system to monitor for user presence and intent signals ahead of time, enabling proactive yet controlled door opening activation
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
Enables convenient and hands-free automatic opening of vehicle doors by detecting user proximity and input commands through the puddle lamp system, enhancing user experience and accessibility.
Implementation Method 1
a light sensor configured to sense reflected light from the puddle light
Data Source
AI summary
A door entry system for a vehicle is provided. The door entry system for a vehicle includes a door, an actuator, a puddle lamp generating light beam, a light sensor configured to sense reflected light from the light beam, and a controller processing a light signal generated by the light sensor and controlling activation of the actuator to open the door in response to sensing a user entering the beam of light.