MOSFET Rectifier Circuit for Power and Data Transmission
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Solution Overview
Problem
Existing outdoor lighting systems face inefficiencies due to the need for separate wires for power and data, leading to increased wiring complexity and heat generation in switching power supplies, which requires large enclosures to prevent overheating.
Innovation Solution
A full-wave rectifier coupled with a bridge circuit using MOSFETs with integral body diodes provides a low-loss power signal, allowing data to be encoded within the power waveform, reducing the need for separate data wires and minimizing heat loss by using a MOSFET full-wave/bridge circuit to efficiently transform and transmit power and data simultaneously.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If separate wires are used for power and data transmission, then data can be transmitted to lighting modules, but wiring complexity increases
Solution Approach 1:
The patent combines power transmission and data transmission into a single wire by superimposing a high-frequency carrier signal on the power line. The lighting modules extract both power and modulated data signals from this combined transmission medium, eliminating the need for separate data wires and reducing wiring complexity while maintaining full data transmission capability.
Solution Approach 2:
The power line is designed to serve dual functions: delivering electrical power to lighting modules and carrying modulated data signals for individual addressable control. This multi-functionality allows the same physical infrastructure to support both energy delivery and communication, simplifying the overall system architecture.
2Power
If DC switching power supply is used to provide power signal, then power can be delivered to lighting modules, but heat generation increases requiring large enclosures
Solution Approach 1:
The patent replaces traditional DC switching power supplies with a resonant power delivery system using high-frequency carrier waves and LC resonance. This substitution eliminates the need for bulky switching components and heat-generating transformers, achieving efficient power transfer through resonant coupling while maintaining compact system dimensions.
3Loss of information
If high frequency carrier is superimposed on power line for data transmission, then data can be transmitted over power lines, but large inductors or complex DSPs are required
Solution Approach 1:
The patent optimizes the carrier frequency parameter to resonate with the inherent capacitance of the power line and lighting module inputs, forming a natural LC resonant circuit. This resonance enables efficient data transmission at lower frequencies that do not require large inductors or complex DSP processing, simplifying both transmitter and receiver design while maintaining reliable communication.
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
This solution significantly reduces heat loss and wiring complexity, enabling a more efficient and compact lighting system with reduced power waste, allowing for independent control of lighting modules while maintaining efficient power transmission.
Implementation Method 1
A MOSFET full-wave rectifier circuit transforms the AC power signal into a rectified waveform
Implementation Method 2
A MOSFET full-wave/bridge circuit transforms and transmits power and data simultaneously through the power waveform
Data Source
AI summary
Systems and methods are provided for lighting systems, including high output lighting systems for various environments. The lighting systems include a lighting controller for driving lighting modules and transmitting a data signal to the lighting modules. The data signal varies between logical states. The lighting controller provides a low loss rectified power signal. The lighting controller further provides data within the power signal by forming a positive polarity rectified power waveform corresponding to data in a first state and a negative polarity rectified waveform signal corresponding to data in a second state using substantially loss-less circuitry.