Power Line Communication Dynamic Wire Pair Switching
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Solution Overview
Problem
Existing power line communication systems face limitations in dynamically switching data transfer over various wire pairs in residential electrical cables, leading to suboptimal transmission speeds and data transfer rates due to reliance on a single wire pair and susceptibility to noise and interference.
Innovation Solution
A system comprising power line modems with processors, transmitters, and receivers, coupled with transformers and switches, allows dynamic selection and switching of wire pairs (active, neutral, and ground wires) for data transfer, optimizing transmission paths based on noise levels and interference to improve data transfer rates.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a fixed wire pair is used for power line communication, then the device complexity is reduced, but the data transfer rate deteriorates due to noise interference and signal attenuation
Solution Approach 1:
The patent implements dynamic switching between different wire pairs based on real-time channel quality assessment. The system transitions from a static single wire pair configuration to a dynamic multi-wire pair system that adapts to changing noise conditions and signal attenuation, thereby improving data transfer rates without permanently increasing device complexity
Solution Approach 2:
The system changes the operational parameters by selecting different wire pairs (P-N, N-G, P-G) based on assessed channel conditions. This parameter change allows the system to optimize data transfer by switching to wire pairs with better signal quality when noise interference or attenuation becomes problematic
2Productivity
If dynamic switching between wire pairs is implemented, then the data transfer rate is improved, but the device complexity increases
Solution Approach 1:
The patent segments the power line communication channel into multiple independent wire pairs (P-N, N-G, P-G), each with its own quality characteristics. This segmentation allows the system to assess and switch between individual wire pairs based on their specific conditions, improving data transfer by utilizing the best available channel without requiring complete system redesign
Solution Approach 2:
The patent introduces a channel quality assessment mechanism as an intermediary that evaluates the conditions of different wire pairs and determines the optimal selection. This intermediary layer manages the complexity of dynamic switching by providing systematic channel evaluation and decision-making, thereby improving data transfer rates while controlling device complexity through structured management
3Adaptability or versatility
If multiple wire pairs are used for transmission, then the adaptability is improved, but the manufacturing cost increases
Solution Approach 1:
The patent makes the existing power line infrastructure multi-functional by enabling communication over multiple wire pairs (P-N, N-G, P-G) that already exist in the electrical system. This universality approach improves adaptability to different noise conditions and channel qualities without requiring additional dedicated communication wiring, thereby avoiding increased manufacturing costs
Solution Approach 2:
The system utilizes the existing electrical wiring infrastructure to provide both power delivery and data communication functions. By making the existing wires serve dual purposes (power and communication) across multiple pairs, the system achieves improved adaptability without requiring new manufacturing or installation of dedicated communication cables, thus avoiding additional manufacturing costs
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 approach enhances data transfer speeds and reliability by dynamically selecting the best wire pairs for data transmission, minimizing noise interference and signal attenuation, thereby improving overall network performance.
Implementation Method 1
The coupling circuit includes a first transformer and a second transformer
Data Source
AI summary
An Apparatus for transmitting and receiving signals over residential electrical cables includes a processor, at least one transmitter and at least one receiver, both coupled with the processor. The apparatus coupled with an electrical cable includes at least one active wire, one neutral wire and one ground wire, the transmitter and the receiver each including a coupling circuit for coupling the apparatus to the residential electrical cables. The coupling circuit has a first transformer and a second transformer, the first transformer including a center tap, receive wire pairs and transmit wire pairs each being formed from at least two of the active wire, the neutral wire, the ground wire and the midpoint. The processor dynamically switches a coupling of the receiver and the transmitter respectively between the receive wire pairs and the transmit wire pairs.