PLC Filter Device Isolating Power Line Communication Networks
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Solution Overview
Problem
Power line communication systems face interference from external devices and systems connected to the same electrical power wiring, leading to compromised communication quality and reliability, necessitating the use of additional cables or complex network architectures to avoid interference.
Innovation Solution
A device with a filter that isolates the power line communication network by removing unwanted frequency components from external AC power, generating filtered AC power for use within the network, thereby preventing interference from external sources and allowing reliable communication without affecting other devices or systems.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If power line communication is used to distribute data over electrical power wiring, then data transmission capability is improved, but communication reliability deteriorates due to interference from external devices and systems
Solution Approach 1:
The patent segments the power distribution system into isolated power line communication networks by introducing filtering devices at strategic points. Each network segment is electrically isolated from external interference through filters that allow power transmission while blocking communication-frequency signals from entering or leaving the segment. This segmentation enables reliable PLC communication within each isolated segment while maintaining the benefit of power-line data distribution.
2Reliability
If filters are introduced to isolate the power line communication network from external interference, then communication reliability is improved, but device complexity increases
Solution Approach 1:
The patent implements multi-functional filtering devices that simultaneously perform power distribution and communication isolation functions. The filters are designed to handle both electrical power transmission and PLC signal filtering in a single integrated component, eliminating the need for separate power supplies and communication interfaces. This universal approach reduces overall system complexity while maintaining communication reliability through effective isolation.
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 filtered AC power ensures increased communication quality, reliability, and higher data throughput within the power line communication network, isolating it from the mains grid in both directions, thus preventing interference and simplifying network architecture by eliminating the need for additional cables.
Implementation Method 1
a filter (103), the input of which is connected to the power input (101) and which is configured to filter noise from outside the first device (100) out of the supplied external AC power
Data Source
AI summary
A device including a power input supplying external AC power to the device via a power cord, a filter filtering noise from outside of the supplied external AC power and thereby generating a filtered AC power, at least one power socket supplying the filtered AC power to at least one other device, and a PLC modem configured to be connected to the at least one power socket and to transmit data to or receive data from the at least one other device via power line communication using the filtered AC power. The device may be used in power line communication systems. A power line communication method uses the device for isolating a power line communication network from a mains grid.