SPE Splitting Unit for Long-Reach Power and Data Distribution
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Solution Overview
Problem
Existing Ethernet systems face challenges in achieving high data transfer rates over long cable lengths without adding signal disturbance and maintaining high power density, especially in hybrid Ethernet systems where power and data are transmitted over a single pair of wires.
Innovation Solution
A splitting unit for single pair Ethernet (SPE) hybrid lines that incorporates an active unit, including a PSE and an SPE switching unit, allows for the transfer of power and data over one pair of copper wires, enabling flexible cable thickness and length adjustments, and reduces the need for extra power cables, thereby maintaining high power density and data transfer rates.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If power and data are transferred over separate cables, then power delivery capability is improved, but device complexity and installation complexity increase
Solution Approach 1:
The patent combines power delivery and data communication into a single cable system using PoDL (Power over Data Line) technology. The splitting unit integrates both power and data ports, allowing power to be delivered through the same twisted pair cable that carries data signals, thereby eliminating the need for separate power cables and reducing overall system complexity
Solution Approach 2:
The splitting unit is designed with universal functionality to handle both power and data transmission through the same infrastructure. The device can simultaneously provide power to multiple devices while maintaining data communication, making the cable system multi-functional and reducing the number of separate components needed
2Length of stationary object
If cable length is increased to reach distant devices, then coverage area is improved, but data transfer rate deteriorates due to signal attenuation
Solution Approach 1:
The splitting unit performs preliminary signal regeneration and refreshing before retransmitting signals to the next segment. By actively regenerating data signals at intermediate splitting units, the system can extend cable lengths beyond what a single direct connection would allow while maintaining data transfer rates, as each splitting unit resets signal degradation
3Length of stationary object
If active units are added to extend cable length, then cable length is improved, but signal disturbance increases
Solution Approach 1:
The splitting unit acts as an intermediary device that properly interfaces between cable segments. By using controlled impedance matching and proper signal conditioning at the splitting unit, signal reflections and disturbances are minimized while still enabling extended cable lengths through multiple segments
4Quantity of substance
If more devices are connected to the network, then network coverage is improved, but power density per device deteriorates
Solution Approach 1:
The patent segments the network into multiple zones using multiple splitting units, where each splitting unit serves a local group of devices with dedicated power capacity. This segmentation allows the total network to support many devices while each individual splitting unit maintains high power density for its local devices by drawing power from the main line and distributing it locally
Data Source
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AI summary
The present disclosure relates to a splitting unit for single pair Ethernet, SPE, hybrid line and to a hybrid Ethernet power system. The splitting unit (14) comprises an input connection element (11), a first output connection element (15), and at least one second output connection element (13). The input connection element (11), the first output connection element (15) and the at least one second output connection element (13) are adapted to transfer power and data. Further, the splitting unit (14) comprises at least one active unit (7), which is operable to provide power and data at the at least one second output connection element (13). The at least one active unit (7) comprises a power sourcing equipment (3), PSE, which is connected to the input connection element (11) and at least one of the output connection elements (13, 15) and which is operable to tap power from a power line (16) onto a data line (18).