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How PoE Can Revolutionize Smart Building Infrastructure

How PoE Can Revolutionize Smart Building Infrastructure

Smart buildings leverage advanced technologies like power over Ethernet (PoE)  to connect systems, providing data that can be analyzed for performance optimization. With a PoE infrastructure, smart buildings centralize data from multiple endpoints to deliver actionable insights for improved efficiency, reduced operating costs, and increased sustainability.

System integration is one of the key features that sets smart buildings apart from connected structures using siloed systems to operate heating, cooling, lighting, and security. For example, PoE-powered sensors placed throughout a building could collect environmental and occupancy data and send it to an integrated system within a specific conference room. The system could automate window blinds in the conference room, raising them to allow sunlight and warm the room or lowering room temperatures. Occupancy data could dictate lighting and temperature settings, saving energy when the room is unused.

What is Power over Ethernet (PoE)?

Power over Ethernet (PoE) technology allows users to simultaneously transmit electrical power and data over an Ethernet cable. One of the huge benefits of this technology is that PoE-enabled devices don’t require a dedicated power source, simplifying infrastructure installation and operation. The complexities of changing or upgrading buildings decrease, allowing for faster and lower-cost installations. 

PoE-powered devices can go where traditional devices cannot. Running electrical wires to remote locations may be cost-prohibitive, whereas extending a network cable is not. With the latest technological advances, PoE infrastructures can support up to 100 watts of power and gigabits of data transmission, expanding support to include laptops, point-of-sale devices, TV screens, and security systems.

What is a PoE Infrastructure?

A PoE infrastructure consists of component devices, such as switches, injectors, cables, and extenders, connected to an Ethernet network. Understanding how these devices fit together will help ensure a resilient and reliable infrastructure suited for smart buildings.

PoE Application DiagramPower Sourcing Equipment (PSE)

Power Sourcing Equipment (PSE) is the core of a PoE network. When connected to a PoE switch or injector, PSEs inject power into the Ethernet cable.

  • PoE switches combine network power sourcing and switching functions into a single device. Switches can be managed or unmanaged depending on the level of granular control needed over the network.
  • PoE injectors add electrical power functionality to Ethernet cables when the network switch is not already PoE-capable. Injectors add power after the network switch, allowing PoE devices to operate in non-PoE environments.

By leveraging recent technological advances, PoE switches can provide enhanced management capabilities for improved network security and quality of service (QoS), allowing smart buildings to operate more efficiently.

PoE Injector PSE ApplicationNetwork Enhancements

Extenders and splitters enhance the capabilities of a PoE network. These devices allow PoE and non-PoE devices to coexist on a network and expand network size.

  • PoE extenders increase the standard reach of an Ethernet cable beyond the traditional 100 meters or 328 feet. They regenerate signals to reduce power or data loss.
  • PoE splitters divide power and data signals, allowing non-PoE devices to operate on a PoE network. When connected to non-PoE devices, splitters allow data through while diverting electrical power elsewhere.

Adding extenders and splitters enables smart buildings to expand their endpoints for improved data collection and device control. They can also help traditional buildings become smarter.

PoE Extender ApplicationPoE Devices

Powered devices (PDs) receive power from power-sourcing equipment. With the latest PoE standards, the list of PDs that can be made PoE-capable now includes:

  • IP Cameras.
  • Wireless Access Points.
  • LED Lighting.
  • Voice over Internet Protocol (VoIP) Phones.
  • Environmental Sensors.
  • Laptops.
  • Kiosks.
  • Signage.
  • TV Screens.

As the Internet of Things (IoT) market expands, building owners will increasingly deploy more PoE-enabled devices to increase data collection in smart buildings.

Ethernet Cables

Ethernet cables serve a fundamental function in networks; without them, networks can’t offer connectivity. However, effective Ethernet networks depend on complying with standards issued by the Institute of Electrical and Electronics Engineering (IEEE). The IEEE 802.3 group of standards defines the operating parameters for different Ethernet cable categories as follows:

  • Cat5: Four twisted pairs of copper wire operating at 100 MHz and 100 Mbps.
  • Cat5e: Four twisted pairs of copper wire operating at 100 MHZ and 1000 Mbps or 1 Gbps.
  • Cat 6: Four twisted pairs of copper wire operating at 250 MHz and up to 10 Gbps at 55 meters or 164 feet.
  • Cat6a: Four twisted pairs of copper wire operating at 500 MHz and up to 10 Gbps at 100 meters or 328 feet.
  • Cat8: Four twisted pairs, each wrapped in foil, operating at 2000 MHz and up to 40 Gbps. 

Categories of Ethernet cable types and their corresponding IEEE 802.3 standards inform how PoE delivers power and data. Using the appropriate application of Ethernet and PoE technology ensures a reliable infrastructure for smart buildings.

PoE Infrastructure Depends on PoE Switches

PoE switches send power through an Ethernet cable while maximizing the following network capabilities:

  • Unified Communications: PoE switches provide the interconnectivity that smart buildings require for sustainability and efficiency.
  • Real-Time Data Collection: PoE switches drive devices that deliver the real-time information necessary for making data-driven decisions that improve occupant experiences and mitigate environmental impacts.
  • Extended Wi-Fi Access Points: PoE flexibility broadens the reach of wireless access points (WAPs) by allowing device placement in remote or hard-to-install locations for enhanced data collection and control.
  • Unified Control: Network switches make centralized power management possible, enabling facility managers and IT personnel to remotely monitor, manage, and control power at the switch or from centralized consoles.
  • Redundancy: PoE switches connected to an uninterruptible power supply ensure critical devices operate during power disruptions.

PoE technology allows smart buildings to deliver on their promise of improved efficiency, lower operational costs, enhanced occupant experiences, and better sustainability.

The Versa 8-Port Managed GbE UPoE Switch

The latest PoE-managed switch from Versa Technology (VX-GPU2610) delivers the following:

  • 4 UPoE ports.
  • 4 10/10/100TX ports.
  • 2 Combo 100/1000X SFP TX ports.
  • RJ45 Console port.
  • Built-in device management system (DMS).
  • DHCP Server.
  • IPv4/IPv6 Management.
  • PoE Port configuration and scheduling.
  • Dual hot-swappable 1440W power supply.

The switch includes Layer 2+ managed features for improved manageability, robust security, and quality of service. Its UPoE supports 60 watts of power and adheres to the IEEE 802.3az standard for energy-efficient Ethernet. 

Versa Technology 

Versa Technology offers PoE Switches for power-hungry environments such as smart buildings where flexibility and scalability are essential for performance optimization. Explore our PoE Switch product line to find the best devices for making a building smart.