PoE Device Ring Topology for IP Camera Power Distribution
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Solution Overview
Problem
Conventional security monitoring systems using IP cameras require separate power adapters and labor-intensive wiring, increasing costs and complexity.
Innovation Solution
A power-over-Ethernet (PoE) system and device that utilize network cables to transmit both data and power, employing switches, rectifiers, and controllers to manage power distribution among PoE devices in a ring configuration, eliminating the need for separate adapters and simplifying installation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If separate power adapters are used for each IP camera, then reliable power supply is ensured, but system complexity and installation cost increase
Solution Approach 1:
The patent combines data transmission and power supply functions into a single Ethernet cable system. The PoE device integrates multiple components including switches, rectifiers, and controllers to enable one cable to carry both data signals and electrical power, eliminating the need for separate power adapters for each IP camera and reducing overall system complexity
Solution Approach 2:
The Ethernet cable is designed to serve dual functions: data transmission and power delivery. The PoE device enables the network infrastructure to universally provide both networking and powering capabilities through the same physical medium, allowing IP cameras to receive both data and power through a single connection
2Power
If separate power adapters are used for each IP camera, then adequate power delivery is achieved, but installation labor and time increase
Solution Approach 1:
By merging power delivery and data transmission into a single cable system, the installation process requires only one cable connection per IP camera instead of two separate connections (power cable and network cable), significantly reducing installation time and labor requirements
Solution Approach 2:
The PoE device performs preliminary power processing functions including rectification and voltage regulation before power is delivered to IP cameras. This pre-processing ensures that power is ready for delivery without requiring separate power adapter installations at each camera location, streamlining the installation process
3Power
If separate power adapters are used for each IP camera, then power requirements are met, but system cost increases
Solution Approach 1:
The patent merges the functions of multiple separate devices (power adapters, switches, rectifiers) into a single integrated PoE device. This consolidation eliminates the need to purchase and install individual power adapters for each IP camera, reducing overall system cost while maintaining adequate power supply capability
Solution Approach 2:
The PoE device provides universal power and data delivery through the Ethernet infrastructure, eliminating the need for separate power distribution equipment. This multi-functional approach reduces the total number of components required in the system, thereby reducing overall system cost
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
Enables direct power supply to PoE devices through network cables, reducing costs and labor by eliminating the need for separate adapters and simplifying the installation process, while maintaining efficient data and power transmission.
Implementation Method 1
The first rectifier, when receiving electric power from the first network cable through the first interface or through the first switch and the first interface, rectifies the electric power received by the first rectifier
Data Source
AI summary
A PoE system includes a plurality of PoE devices and a hub that are coupled in a ring configuration through a plurality of network cables. The hub is coupled to two of the network cables, and provides electric power to at least one of the network cables that is coupled to the hub. Each of the PoE devices is coupled to two of the network cables, receives electric power from one of the two network cables, and supplies electric power to the other one of the two network cables. As a consequence, each of the PoE devices can be directly or indirectly powered by the hub.