SPoE eröffnet neue Möglichkeiten – Communication

Power over Ethernet (PoE) is at least 100 meters long. The new standardized IEEE “Single-Pair PoE” (SPoE) technology achieves greater synchronization and connection date with a single drilled cable and new connections.

Ethernet is an establishment and many applications worded for data communications between two devices. This is the first time you see the Kupferdrähte zur Übertragung von Datensignalen zur Verfügung. The use of Ethernet, which is typical in an own distribution installation, was achieved at a low cost for configuration and installation. Power-over-Ethernet (PoE) complies with Ethernet standards and Ethernet standards, which means that data is also available on the cable to be used.

PoE can have reading up to 90m with maximum turn-on up to 100m. PoE connections such as IP cameras, wireless hotspots, VoIP phones and smart surveillance systems are compatible with a unique cable technical data set and efficient power supply. However, if you do not have any restrictions on the power supply, it may not be possible for PoE to operate, such as for example. B. der Bedarf an sperrigen und teuren Steckern und Kabeln, die high Strome und Spannungen verarbeiten können, sowie Leistungsverluste auf der Leitung und Wärmeabgabe bei hohen Leistungen.

SPoE update

Single Pair Ethernet (SPE) is the highly informed implementation of Ethernet by a pair of vendors. For connection to a data connection and fast usage, you can use a single pair of Power over Ethernet (SPoE) data at up to 1 Gbps and up to 52 W with cables 1 km apart (Picture 1). When you have small and cost-effective cables and cables in use, they are compatible with RJ45-Buchsen cables.

Aufgrund der geringeren Kosten und der einfacheren Implementierung sich SPoE für un vielzahl von Anwendungs ​​​​in der Industrie, im Automobil, in der Gebäudeautomatisierung und in IoT-Umgebungen – eigentlich überall dort, w die Installation neueren Cable or die ausschließliche Verwendung von Wireless Les local networks are not practical or cost-effective, or else. This is an umfassende telemetry system for energy monitoring, power outlet and surveillance protection.

In an industrial environment, sensors and SPoE devices can be used for large installations within an operating system, without local systems being installed, the network infrastructure is ensured, the costs of installation and a power plant are provided. ermöglicht. It is possible to use SPoE switches and endpoints in a channel and a relatively simple process for installing existing Ethernet cables.

SPoE is one of the IEEE802.3 standards – IEEE802.3cg for 10 Mbit/s Ethernet with a single standard version (10Base-T1L) – and another extension of the IEEE802.3bu (Power over Data Lines, PoDL) standards. Dear. PoDL is connected to systems 40 m away and 12, 24 or 48 volts powered; SPoE works with a range of 24 V or 55 V and up to 1000 m.
SPoE is ideal for applications, but for PoE it is not easy or possible to use.

The simplest applications for SPoE devices:
➔ Betriebstechnische Systeme, bei denen a zuverlässige Kommunikation and Stromversorgung für die Prozesssteuerung et -automatisierung entscheidend sind.
➔ Gebäude- und Fabrikautomationssysteme, die Umwelt- und Maschinenparameter überwachen und steuern können.
➔ Field agents, like sensors and agents, are more flexible and more expensive to use.
➔ Sicherheitssysteme (Security), para. B. For command control and monitoring, SPoE is lighter and skalierbar.
➔ Verkehrsmanagementsysteme, die einen konstanten Betrieb und eine ständige Vernetzung erfordern.
➔ Stromversorgung et Verwaltung von IoT-Geräten am Netzwerkrand (Edge).
➔ Fernspeisung für digitale Beschilderung und Außenbeleuchtung.

Overview of SPoE-Design

SPoE nutzt die »Phantom Power«-Technik, um die Stromversorgung über das Datensignal auf dasselbe Adernpaar zu legen, was a complex Steuerungen and each end of the cables is perfectly matched, a Strom and a Datensignal zu trennen and zu regeln. Die Anwendungen müssen zudem zudem leistungsverluste et die Wärmeabgabe enter berücksichtigen cables, die die Leistungsfähigkeit et Zuverlässigkeit des Systems beinträchtigen können.

A PSE (Power Sourcing Equipment) controller designed for ausgeklügeltes energy management and sustainable power installation, security, stability and energy efficiency. The PSE controller works in combination with a PD controller (powered device), power is supplied through a 2-wire cable.

The PSE controller allows you to access many channels, e.g. B. Sensoren, mit Strom versorgen. The LTC4296-1 (Image 2) from Analog Devices (ADI) is a 5-port SPoE controller, which can last up to 1000 m with a maximum power source. The LTC4296-1 offers the method of reading external N-Kanal MOSFETs with wide support (RDS(ON)), minimum lifespan and application robustness.

This is »LTC4296-1« a highly efficient SPoE and PSE (power supply equipment) solution for the 10BASE-T1L controller and switches and the latest issues with the combined ADI 10BASE-T1L-Transceiver-Portfolio, e.g. 2-port example. -Baustein »ADIN2111CCPZ-R7«, one switch, two Ethernet-PHY (physical layer) with MAC structure and two analog systems, protection for expansion monitoring and POR protection (power-on reset). The transceiver can be plugged into a serial peripheral unit (SPI) for direct connection with a high capacity controller.

The »LTC9111RDE#PBF« is one of several PD (Power Delivery) controllers from ADI, which is a 2.3 to 60 V polarity controller (coming soon (Picture 3). The controller uses classification and observation of the operating mode, as well as the classification of two external N-Kanal-MOSFET switches with a power supply (micro-power) and a minimized power capacitor. An external N-Kanal-MOSFET-Schalter channel isolates the Ausgangskapazität während der Klassifizierung and Einschaltvorgangs vom Steckverbinder.

The LTC9111 series controller sends an efficient wake-up signature and PSE, for rapid response. The PSE and PD controllers, described by the “IEEE802.3cg” standard, provide the classification scheme for the use of the “Serial Communications Classification Protocol” by; The PSE is safe, because the PD is compatible and, accordingly, the falls die from the fall, with the high roads of Fort Portspannung. Please note that the current voltage is 24 V or 55 V, which is connected to DC/DC-Wandler.

ADI also offers the EVAL-SPoE-KIT-AZ evaluation kit for evaluating 10BASE-T1L and SPoE data over a single twisted pair Ethernet (SPE) cable. The kit includes the LTC4296-1 PSE controller and LTC9111 PD controller for evaluating IEEE802.3cg class 10 to 15 SPoE standard and a 10BASE-T1L transceiver for system updating.

Rahmenbedingungen bei SPoE-Anwendungen

Through product development, the training budget and efficiency of the SPoE system are optimized and parameters such as cables, dimensions, range, temperature and parameter display are defined.
Das Gleichgewicht zwischen Stromversorgung und Datenübertragung über eine einzige verdrillte Zweidrahtleitung stellt eine Herausforderung dar, z. B. die Sicherstellung einer ausreichenden Stromversorgung für entfernte Geräte bei gleichzeitiger Aufrechterhaltung der Datenintegrität über potenziell große Entfernungen.

The power supply with a long cable with 24 V (DC) is connected to the OT-Anwendungen (Operational Technology) and is equipped with cables that are widely used. SPoE complies with IEEE 802.3cg for use with a specific 24 or 55 V voltage range, so that a maximum safety voltage (Safe Extra Low Voltage, SELV) of 60 V is used.

Components and Implementation

SPoE is a relatively young new technology, which allows data to be passed easily and over a single available Ethernet connection cable. Be sure to ascertain the cost, complexity and integration of network infrastructure structures and the flexibility, flexibility and flexibility of layout services. The ADI portfolio is an IEEE 802.3cg compliant PSE and PD controller that can be designed and implemented by SPoE applications with high efficiency and autonomy and is ideal for industrial, automotive and smart building systems. robust and durable Vernetzung erfordern.

The author

Rolf Corne

DigiKey Electronics Application Engineer was established in 2014 as part of the Technical Support Group for European Testing and the front line for advanced engineering and engineering services in DACH and Benelux countries sowie for businesses and article and design designers. Blogs on DigiKey’s TechForum and maker.io platform available.

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