Why occupancy sensing?
Smart building automation is gathering real momentum in both home and commercial markets,
offering increased levels of occupant comfort, security, and energy efficiency. With global
energy demands rising inexorably and power companies struggling to meet them, energy saving
strategies are taking centre stage.
Using occupancy sensing to automatically turn off task lighting and electrical appliances when they’re not being used by building occupants achieves more though than just conserve power and cut energy bills, it helps to reduce carbon emissions, and prolong the life span of all kinds of equipment.
What is occupancy sensing?
Reliable and accurate occupancy sensing has long been the foundation of the smart-automated home
or office. Occupancy sensors detect whether an indoor space is being used by someone or not and
is programmed to automatically turn electrical systems on or off, such as lighting, heating,
ventilation and other equipment.
The majority of existing occupancy sensing solutions however fail to detect stationary occupants and have high rates of false tripping.
To be reliable, occupancy sensors need to be sensitive enough to detect even the slightest human movement; the breathing chest of someone sleeping, the heartbeat of a person sitting still.
How do we do occupancy sensing?
Occupancy sensing answers a very simple question: Is there a person present or not? Presence can
be detected from someone walking through a room, or someone just sat down using a keyboard – it
can be a major movement, it can be a minor movement.
TransRobotics ultra wide band radar technology uses the pulse Doppler shift principle to separate human movement among static objects such as walls, desks and chairs. Even tiny movements like a person’s breathing can be detected.
Potential applications for occupancy sensing
The TransRobotics high-sensitivity occupancy sensing solution is ready to integrate into a wide range of smart building applications
In a smart home setting, occupancy sensors are placed around the house to detect human presence and automate lighting control. Room lights can be automatically turned on and kept on as long as the sensor detects human presence. Such an application helps reduce domestic energy bills and increase comfort in the home.
Through home automation, HVAC systems can also be controlled and set to turn on once the sensor detects presence in the room. HVAC automation increases user comfort, contributes to energy cost savings, and helps in making houses more “green”.
Sensors can be used in smart building monitoring applications and more specifically in an emergency setting. They can detect which rooms are occupied, allowing emergency services the possibility of carrying out a quicker and safer evacuation.
In a museum or art gallery setting, a sensor can be placed behind valuable pieces of art to startle the too-close observer with a warning, or trigger an alarm if it detects the lightest finger tap. While all museums employ a variety of security precautions, these sensors give “museum security” the ability to safeguard collections at all times, avoid potential damage, and art theft.