Optical Power Feeding with Modulated Light and Split Receivers
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing optical power feeding systems primarily focus on transmitting electric power and lack the capability to simultaneously transmit information via feed light.
Innovation Solution
Incorporating a first light receiver to convert feed light into electric power and a second light receiver to convert reflected or transmitted feed light into an electrical signal, with a demodulator to extract the superimposed information, utilizing semiconductor materials with short laser wavelengths for high efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If optical power feeding systems use feed light to transmit electric power, then power transmission efficiency is improved, but the capability to simultaneously transmit information is lost
Solution Approach 1:
The feed light is designed to serve dual purposes: transmitting electric power through photoelectric conversion and carrying information through modulation. By making the light transmission system universal, it can simultaneously perform power delivery and data communication functions without requiring separate channels
Solution Approach 2:
The system modulates information by changing parameters of the feed light (such as intensity, frequency, or phase), allowing information to be superimposed on the power-carrying light wave. This parameter modulation enables the same physical medium to convey both energy and information
2Use of energy by moving object
If a single light receiver is used to convert feed light into electric power, then power conversion efficiency is improved, but information extraction capability is lost
Solution Approach 1:
The light receiver is divided into two separate functional components: a first light receiver dedicated to converting feed light into electric power, and a second light receiver dedicated to converting feed light into electrical signals for information extraction. This segmentation allows each component to be optimized for its specific function without compromise
Solution Approach 2:
The system uses an optical splitting mechanism that acts as an intermediary to direct portions of the incident feed light to different receivers. This intermediary structure enables simultaneous power conversion and signal detection without the receivers competing for the same light energy
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
Simultaneously transmits electric power and information through feed light, enhancing photoelectric conversion efficiency and enabling compact device design.
Implementation Method 1
a first light receiver configured to convert feed light incident thereon into electric power
Implementation Method 2
a second light receiver configured to convert the feed light reflected by a light receiving surface of the first light receiver into an electrical signal
Data Source
AI summary
A powered device includes a first light receiver, a second light receiver, and a demodulator. The first light receiver converts feed light incident thereon into electric power. The second light receiver converts the feed light into an electrical signal. The demodulator demodulates the electrical signal converted by the second light receiver, and acquires information. The information is superimposed on the feed light in advance by modulation.