Reflective LiFi Receiver Trough for Stable Signal Capture
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing LiFi communication systems face challenges with signal reception quality due to reliance on direct line of sight and the use of small receivers, which can result in variable reception quality when the receiver device is moved or inclined, and are limited by obstacles blocking light rays.
Innovation Solution
A receiver device for modulated light transmission that includes a trough with a reflective guiding surface to focus light rays onto a photoreceiver, allowing additional light rays to be captured and combined with direct reception, and features like actuators and a processing unit for closed-loop control to optimize signal reception.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a small receiver is used in LiFi communication, then the device complexity is reduced, but the signal reception quality deteriorates when the receiver is moved or inclined
Solution Approach 1:
A trough with reflective guiding surfaces is introduced as an intermediary component between the light source and the small photoreceiver. The trough collects light rays from the LED bulb and redirects them through successive reflections onto the photoreceiver, enabling the small receiver to capture multiple light rays that would otherwise miss it, thus maintaining high signal reception quality without increasing device complexity
Solution Approach 2:
The invention transitions from direct one-dimensional reception to multi-dimensional light collection by using the trough structure. The reflective surfaces are arranged to guide light rays from various angles and directions onto the photoreceiver, effectively adding spatial dimensions to the reception capability and allowing the small receiver to capture light from multiple paths
2Speed
If direct line of sight is required for light transmission, then the transmission speed is maintained, but communication is cut off when obstacles block the light path
Solution Approach 1:
The trough structure is designed to pre-capture and redirect light rays before they reach the photoreceiver. By positioning the trough to intercept light rays that would be blocked by obstacles, the system can maintain communication continuity even when direct line of sight is interrupted, as the trough collects light from alternative paths and delivers it to the receiver
Solution Approach 2:
The trough acts as an intermediary that can redirect light rays around obstacles. When direct light paths are blocked, the trough captures light rays from surrounding areas and redirects them onto the photoreceiver, maintaining the data transmission speed while ensuring communication continuity in obstructed environments
3Adaptability or versatility
If the receiver device is moved to adapt to different positions, then the adaptability is improved, but the reception quality varies due to changing inclination
Solution Approach 1:
The trough with its reflective guiding surfaces is designed to dynamically adapt to different positions and inclinations. The reflective surfaces are arranged to redirect light rays onto the photoreceiver regardless of the receiver's orientation, maintaining stable reception quality while allowing the device to be moved and repositioned freely in three-dimensional space
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 signal reception quality by increasing the number of light rays received, stabilizing orientation, and adapting to environmental changes for improved data transfer in environments with obstacles or movement.
Implementation Method 1
a first guiding surface, coupled to the slot, said slot being arranged at the entrance to the first guiding surface, the first guiding surface comprising at least one internal surface which is reflective and shaped to guide the light ray by successive reflections to at least one photoreceiver coupled to the receiver device
Data Source
AI summary
A receiver device for communication via modulated light transmission, intended to be coupled to a terminal which uses data received via modulated light, is disclosed. The receiver device includes at least one trough, said trough comprising: a slot for receiving at least one light ray of the modulated light, and a first guiding surface, coupled to the slot, said slot being arranged at the entrance to the first guiding surface, the first guiding surface comprising at least one internal surface which is reflective and shaped to guide the light ray by successive reflections to at least one photoreceiver coupled to the receiver device.