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Sensors
Sensors are a necessary part of the control loop that will
enable the digital building. Sensors can be either wireless or
wired, and they can be deployed and powered through the
PoE gateway or integrated into the LED lighting fixture.
Wireless ambient light sensors are a commonly deployed
device in this arrangement. They are self-powered by
collecting light and performing energy harvesting, which
makes them economical and reliable. They are capable
of measuring and reporting to a central host the level of
available natural light allowing the network to make real-time
adjustments and decisions.
Other common types of sensors used in LED lighting
networks include air quality, color temperature, humidity,
passive infrared (PIR) motion/presence, on/off, proximity,
power, and temperature.
Wireless Switches & Dimmers
Self-powered wireless wall switches and dimmers employ
energy harvesting technology to communicate wirelessly with
the PoE gateway, providing convenient control of lighting,
temperature, and miscellaneous electric loads. The local
switch/dimmer pads are self-powered and never require
batteries because the simple act of pressing the rocker
generates enough energy to send a wireless signal
to gateway devices.
Conclusion
Intelligent and networked LED lighting systems
are forming new ways to apply LED lighting in
the world of smart buildings and information
technology. These lighting systems require a
variety of technologies, including gateways,
fixtures, lights, smart drivers, cable harnesses,
sensors, and wireless switches and dimmers.
The future is bright as system-level intelligence
converges with our working environments,
enabling the smart building of tomorrow today.
• PoE PD Interface with
Compact Footprint
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Digi
®
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Cellular LTE Cat 1
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