Leaky Coax Cable Signal Interference Reduction
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Solution Overview
Problem
Current mission-critical wireless communication systems, such as IO-Link Wireless, face significant interference challenges in confined areas like manufacturing settings, limiting the number of devices that can be reliably supported and failing to meet requirements for low latency and robust communication.
Innovation Solution
The implementation of a leaky coax cable system with strategically placed gaps in its outer conductor to allow radio signal leakage, combined with near-field RF probes and transmitters, reduces interference by maximizing near-field gain while minimizing far-field interference between sectors.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If IO-Link Wireless uses ISM band for wireless communication, then wireless connectivity is achieved, but signal interference increases in confined areas
Solution Approach 1:
The patent divides the communication system into multiple sectors, each with its own gateway and wireless network. This segmentation isolates interference within each sector, preventing it from affecting the entire system. Each sector operates independently with dedicated wireless resources, reducing overall interference in confined industrial areas.
Solution Approach 2:
The patent introduces leaky coaxial cables as intermediary transmission media between gateways and devices. These cables guide electromagnetic signals along their length, providing a controlled transmission path that reduces interference compared to direct wireless propagation. The leaky coax acts as a mediator that combines wired guidance with wireless device interfaces.
2Quantity of substance
If more devices are connected in a confined area, then system capacity increases, but communication reliability decreases due to interference
Solution Approach 1:
The patent segments the industrial system into multiple sectors, each capable of supporting multiple devices independently. This allows the total number of devices to increase across sectors while maintaining reliability within each sector. The segmentation prevents interference from propagating across the entire system, enabling scalable device deployment in confined areas.
Solution Approach 2:
The patent transitions from a single-plane wireless network to a multi-dimensional architecture combining wired (leaky coax) and wireless components. This dimensional change allows devices to be distributed throughout the confined space while maintaining reliable communication through the hybrid transmission medium, effectively increasing system capacity without sacrificing reliability.
3Ease of manufacture
If wireless communication is used throughout the system, then installation simplicity improves, but signal interference increases
Solution Approach 1:
The patent applies different transmission qualities to different parts of the system: leaky coaxial cables are used for gateway connections where stable, guided transmission is needed, while wireless interfaces are used for device connections where mobility and ease of installation are priorities. This local differentiation of transmission quality reduces overall interference while maintaining installation simplicity.
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 enables reliable, low-latency communication in confined areas, supporting a larger number of devices and meeting mission-critical wireless link requirements, such as those in production floors and assembly lines, by minimizing signal interference.
Implementation Method 1
a first coaxal cable having a first length and a plurality of gaps in an outer conductor of the first coaxal cable, such that a radio signal can leak out of the first coaxal cable
Data Source
AI summary
An apparatus for a reducing signal interferences in critical mission wireless communication system is provided. The first coaxal cable having a first length and a plurality of gaps in an outer conductor of the first coaxal cable, such that a radio signal can leak out of the first coaxal cable; a plurality of receivers, wherein each receiver plurality of receivers is connected in proximity to the first coax cable; and a transmitter connected at one end of the first coaxal cable, wherein the plurality of receivers and the transmitter are part of the critical mission wireless communication system.