Will the smart buildings be aware of what is going on with the occupants, should it? For example, should it know, what they are doing, what their preferences are?
Contextual and Situational
awareness are key technical pillars of a smart building. Situational awareness
is more about the perception and understanding of environmental elements, both
internal and external to the building. While it is not phrased as “situational
awareness”, most of the smart building solutions today include aspects of
situational awareness, they are mostly targeted solutions within silos like
lighting, HVAC, security etc. While there is long way to go, the existing
solutions have made progress towards “situational awareness”. However, the
emphasis on engaging the building occupants (beyond facility professionals) has
been minimal to nonexistent.
Context awareness by
definition is the state of the user (occupants of a building), like, where they
are, what they are doing, and what they are interacting with etc. Given that the
objectives of a smart building includes occupant comfort, efficient
operation, resource optimization (energy, water) etc, then engaging the
occupants becomes critical and an effective strategy. It allows the building
system to react in a more meaningful manner, in-situ, and maximize its chances
of effectively achieving its objectives.
Let’s take a simple and well established example of how lighting
works. There are occupancy sensors that detects movement and switches the light
ON, the system times out after a few minutes and switches the lights OFF. This
action remains the same in all situations, be it an occupant walking past that
area, or actively working in that space. Let’s see how context awareness helps.
If the system understands the activity of the occupant, it can adjust the
timeout automatically when he is just passing by, more interestingly it can
optimize the amount of lighting based on activity. It can go even further if it
understands the occupants lighting preference and adjust accordingly. This can
expand to other building automation areas as well.
Wait … we are not done. There is still one pillar where the
building starts interacting to the users, providing them feedback, even
condemning resource wastage. I am going to leave those musings to the next
blog.