MOSFET Bridge Rectifier for Outdoor Lighting Power and Data
Find Innovative SolutionsGenerate Solutions
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 larger 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 MOSFETs as low-loss switches.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If separate wires are used for power and data in lighting systems, then reliable power delivery and data transmission are achieved, but wiring complexity increases
Solution Approach 1:
The patent combines power delivery and data transmission into a single wire by superimposing high-frequency data signals on top of the power waveform. The lighting controller modulates the power signal to encode data, allowing both functions to coexist on the same conductor without requiring separate wiring infrastructure.
Solution Approach 2:
The single wire performs multiple functions simultaneously: it delivers power to the lighting modules and transmits bidirectional data communication. The system uses the power waveform as a carrier for data modulation, enabling the same physical medium to serve both energy and information transfer purposes.
2Use of energy by moving object
If switching power supplies are used to convert AC to DC power, then power conversion is achieved, but heat generation increases requiring larger enclosures
Solution Approach 1:
The patent replaces traditional switching power supply circuitry with a capacitor-based voltage storage system. Instead of using active switching components that generate heat, the system uses capacitors to store energy and maintain voltage, eliminating the need for heat-generating switching regulators and reducing thermal management requirements.
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 reduces heat generation and wiring complexity, enabling a more efficient and compact lighting system with improved power management and data transmission within a single wire, enhancing the overall performance and reliability of outdoor lighting networks.
Implementation Method 1
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 MOSFETs as low-loss switches.
Implementation Method 2
A full-wave rectifier coupled with a bridge circuit using MOSFETs with integral body diodes provides a low-loss power signal
Implementation Method 3
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
Data Source
AI summary
Systems and methods are provided to transmit a data encoded power signal to addressable devices. A data signal includes address and command data that varies between logical states. A controller provides a low loss rectified power signal. The 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.