Single Pair Ethernet Sensor Device for Automated Industrial Network Deployment
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Solution Overview
Problem
There is a need for an improved industrial and building sensor network that reduces cabling costs, simplifies deployment, and provides integrated power delivery while enabling direct communication with higher-level automation protocols, particularly in industrial and building automation systems, and addressing the complexity of manual configuration.
Innovation Solution
A Single Pair Ethernet (SPE) sensor device and network that utilizes the IEEE 802.3cg standard, featuring an autoconfiguration mode, environmental sensors, an SPE interface, and a controller to automatically configure communication with remote servers, reducing the need for manual setup and enabling power delivery over data lines.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional Ethernet with multiple conductor pairs is used, then data transmission reliability is improved, but cabling cost and installation complexity increase
Solution Approach 1:
The patent segments the traditional Ethernet conductor pairs into a single pair implementation for SPE (Single Pair Ethernet), reducing from four conductors to two conductors while maintaining data transmission capability through differential signaling over the single pair
Solution Approach 2:
The single pair of conductors in SPE is designed to perform multiple functions simultaneously: data transmission and power delivery (PoDL), eliminating the need for separate power and data wiring infrastructure
2Manufacturing precision
If manual configuration mode is used for sensor networks, then device control precision is improved, but deployment time and operational complexity increase
Solution Approach 1:
The sensor device performs self-configuration by automatically discovering available network nodes, selecting appropriate communication partners, and establishing connections without manual intervention. The system autonomously handles IP address assignment, protocol negotiation, and network integration
Solution Approach 2:
The system pre-configures communication protocols and parameters before deployment, with the sensor device automatically loading appropriate communication stacks and configuration templates, eliminating the need for post-deployment manual setup
3Adaptability or versatility
If integrated power delivery is added to SPE, then device versatility is improved, but power transmission stability becomes more difficult to maintain
Solution Approach 1:
The patent merges power delivery and data transmission functions into a single pair of conductors, where the same physical infrastructure carries both electrical power and digital data signals simultaneously through protocol-based separation
Solution Approach 2:
The system applies different signal quality requirements to different portions of the communication: power delivery uses higher current capacity with tolerance for voltage variation, while data transmission maintains stricter signal integrity requirements through differential signaling and error checking
Data Source
AI summary
A sensor device may include an environmental sensor configured to sense an environmental parameter and generate a signal representative thereof, a single pair ethernet (SPE) interface configured to cooperate with an SPE link, and a controller provided in communication with the environmental sensor and the SPE interface. The controller may be configured to receive the signal representative of the sensed environmental parameter and to control the SPE interface to generate at least one ethernet frame including data indicative of the sensed environmental parameter for transmission over the SPE link. The controller may be further configured to automatically configure communication with a remote server over the SPE link via the SPE interface.