Inductive Coupling Power Line Communication Control
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Solution Overview
Problem
Modern power line communication systems face challenges in reducing signal noise and interference, and ensuring compatibility with existing power line infrastructures, limiting their effectiveness in transmitting communication signals efficiently.
Innovation Solution
A power line communication control system is designed with inductive coupling and signal amplifiers to transmit communication signals over existing power lines, using inductors to separate and filter signals, allowing for one-way transmission and reducing noise interference, and incorporating features like AC to DC conversion for compatibility with various appliances.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If power line communication systems use existing power delivery infrastructure for signal transmission, then device footprint is reduced and additional communication network equipment is eliminated, but signal noise and interference increase
Solution Approach 1:
The patent introduces communication signal injection units at both ends of the power line as intermediary devices. These units inject communication signals into the power line and filter power line noise, serving as a mediator between the communication system and the power delivery infrastructure. This resolves the contradiction by enabling signal transmission through the power line while actively managing and reducing noise interference through filtering mechanisms.
2Device complexity
If power line communication systems use existing power delivery infrastructure, then additional communication network equipment is removed, but compatibility and adaptability issues with existing power line infrastructures arise
Solution Approach 1:
The patent implements communication signal injection units that can operate bidirectionally on existing power lines, making the system universal and adaptable to different power line configurations. The injection units are designed to work with standard power delivery infrastructure while providing communication capabilities, enabling the system to adapt to various existing power line setups without requiring specialized communication infrastructure.
3Ease of manufacture
If communication signals are transmitted over power lines, then cost-effective appliance control is enabled, but signal transmission efficiency is reduced due to noise and interference
Solution Approach 1:
The patent employs feedback mechanisms where communication signal injection units monitor the power line conditions and adjust signal injection accordingly. The units detect noise levels and transmission quality, then modulate the injected signals to optimize transmission efficiency. This feedback control enables cost-effective communication over existing power lines while maintaining acceptable transmission efficiency despite the noisy environment.
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 system effectively transmits communication signals with reduced noise and interference, enhancing compatibility with existing power line infrastructures, thereby providing a cost-effective solution for electronic appliance control without the need for additional communication network equipment.
Implementation Method 1
an inductive coupling input terminal P-P' and an inductive coupling output terminal Y-Y' arranged in parallel, wherein each of the inductively coupling input and output terminals includes a pair of series-connected inductors
Implementation Method 2
signal amplifiers to transmit communication signals over existing power lines
Data Source
AI summary
A power line communication control system for coupling between an power line and a load is disclosed. The exemplary system is capable of simultaneously distributing electrical power and transmitting communication signals with minimized interference there-between. The exemplary system includes an inductive coupling input terminal and an inductive coupling output terminal. Each of the input and the output terminals includes a pair of series-connected inductors having substantially identical inductance value. Accordingly, the system is capable of may deliver the household power signal under common mode transmission while transmitting the communication signal using differential mode transmission, thereby minimizing the interference between the power line AC current and the communication signal.