Rotatable Light Source Module With PWM Signal Control
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Solution Overview
Problem
Existing light source modules lack the ability to effectively control the emitting angle of light, limiting their versatility and application in devices requiring directional light emission.
Innovation Solution
A rotatable light source module with a substrate-mounted light-emitting device, a pivot ring, and a base that allows for adjustable rotation within a predefined angle, combined with sensors and a controller for automatic operation, enabling precise control over light direction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple separate signal transmission paths are used for different control signals, then signal transmission reliability is improved, but device complexity increases
Solution Approach 1:
The patent combines multiple control signals (power on/off, dimming, color temperature control) into a single transmission path using pulse width modulation (PWM) technology. The controller transmits all control information through one signal line to the driver circuit, eliminating the need for multiple separate signal paths while maintaining reliable signal transmission through structured PWM packet protocols.
Solution Approach 2:
The single signal transmission path is designed to handle multiple functions simultaneously. The PWM signal can carry power control, dimming adjustment, and color temperature control information through different packet types, allowing one transmission path to perform multiple control functions that would traditionally require separate dedicated lines.
2Object-affected harmful factors
If separate signal paths are used for power control and data transmission, then signal interference is reduced, but light source module complexity increases
Solution Approach 1:
The patent segments the control signals into distinct PWM packets with different identifiers. Power control, dimming control, and color temperature control are divided into separate packet types that can be transmitted sequentially through the same path. This segmentation allows the system to process different control functions independently while sharing a common transmission medium, reducing interference through temporal and logical separation.
3Manufacturing precision
If traditional separate control methods are used for power, dimming, and color temperature, then control precision is maintained, but number of components increases
Solution Approach 1:
The patent uses pulse width modulation (PWM) to encode multiple control parameters (power level, dimming ratio, color temperature) within a single signal stream. By varying the pulse width and packet identifiers, the system can precisely control different parameters through one signal line, maintaining control precision while eliminating the need for multiple separate control lines and associated components.
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 module allows for easy adjustment of light emission angles and ranges, enhancing its application in devices such as sterilization units by ensuring efficient light treatment and flexible installation.
Implementation Method 1
a light source module (100), comprising: a light emitting element (110)...
Data Source
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AI summary
A light source module includes a light source unit including a substrate and a light-emitting device provided on the substrate; a base to fix the substrate and rotatable around a pivot axis; and a housing having a pivot ring surrounding the base, wherein the housing are coupled to the light source unit and the base.