Wireless Light Board With Magnetic Door Detection and Low Power Use
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Solution Overview
Problem
Conventional light-emitting welcome pedals in vehicles face issues with high power consumption, complex installation, short lifespan of infrared or ultrasonic switches, and limited accuracy in detecting door opening/closure due to restricted detection areas and improper magnet usage.
Innovation Solution
A wireless light board design featuring a compact, waterproof, and power-efficient structure with a proximity sensor module, magnetic sensor module, and intelligent control module for accurate door detection, allowing for easy battery replacement and enhanced detection area, utilizing a baseplate, backlight module, power module, and customizable top cover for improved performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If infrared switches or ultrasonic switches are used to turn on/off the lights, then the lighting function is achieved, but power consumption is high and life cycle is short
Solution Approach 1:
The patent replaces mechanical/electronic switches (infrared or ultrasonic switches) with a magnetic field-based detection system. A magnet is attached to the door and a magnetic sensor on the light board detects the magnet's position to determine door opening/closing state, eliminating the need for high-power infrared or ultrasonic switches and thereby reducing power consumption while extending operational life.
2Ease of operation
If infrared switches or ultrasonic switches are used, then the lighting control is achieved, but cable installation is complex
Solution Approach 1:
The patent replaces cable-based electrical switching systems with a wireless magnetic field detection system. The magnetic sensor detects the magnet's position without requiring physical cable connections for switching control, significantly simplifying installation by eliminating complex cable routing while achieving the same lighting control function.
3Measurement precision
If magnet sensor module is used for detecting door opening/closure, then safety detection is achieved, but detection accuracy is insufficient due to limited detection area
Solution Approach 1:
The patent divides the detection function into multiple magnetic sensors arranged at different positions on the light board, each detecting magnetic field changes in different areas. This segmentation of the detection system expands the overall detection area and improves accuracy by cross-validating signals from multiple sensors to determine door state.
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
The wireless light board achieves high sensitivity and accuracy in detecting door opening/closure with a larger detection area, reduced power consumption, and simplified installation, while maintaining a slim and compact form, outperforming traditional systems in detection precision and power efficiency.
Implementation Method 1
The proximity sensor module is arranged on the circuit board and used to sense an induction signal
Data Source
AI summary
A wireless light board is disclosed herein. The present invention comprises a baseplate, a backlight module, a power module, a magnet sensor module, a control module, at least one bottom cover, and a top cover. The baseplate has a recess and a power source accommodation hole to respectively accommodate the backlight module and the power module. The control module is arranged on a circuit board and electrically connected with the backlight module and the magnet sensor module to turn on/off the backlight module. The bottom cover removably covers the power source accommodation hole. The top cover covers at least the backlight module and the power module and has a first light-permeable region above the backlight module. Thereby, the wireless light board is slim, waterproof, power-saving, easy to install, and convenient for battery replacement.