Daikin Integration to BACnet, Modbus, KNX, WIFI, Mobile Apps
The Future Building Management System
As we transition to
more complex, higher performing, and energy
efficient buildings, it is apparent that traditional building
management systems are not up to the task of monitoring and managing
today’s building operations. What are the shortcomings of the legacy
BMS? The list is quite long but the major items include limited
integration capabilities, inadequate and elementary analytic tools,
proprietary programming languages, a dearth of software applications
and legacy user interfaces.
To some extent, the BMS have gotten to this point because of the business and financial aspects surrounding it. When a traditional BMS is sold and installed it’s usually a small part of a much larger investment. The larger business piece is the sale of BAS controllers. It’s the controllers’ need for service, parts and possible replacement over time that will generate significant recurring revenue for the equipment manufacturer. So the main building management tool, the one that provides the user interface for many of the building systems, often takes a “back seat” to selling and installing the controller hardware. Why would manufacturers put a lot of resources into developing a product that may be only a very small part of a total sale?
manufacturers have made some incremental improvements to
their products. They may have added an “energy management package”, or
re-engineered an industrial process system for buildings or even bought
smaller software companies thinking that would save the day. Despite
their efforts, the fact is BMS are well short of where they need to be
as an industry.
Part of the
problem is that BMS manufacturers are not good at IT and
the BMS is an IT system: it’s a server with a database, IP address and
software applications, connected to an IT network. What has
developed at the industry level for building automation and IT is just
a magnification of what is happening in many facility management and IT
departments, that is, the readjustment of the roles of facility
management and IT departments given the reality of the significant
penetration of IT into building systems. Some organizations have worked
out those organizational issues, but the BAS manufacturer and the IT
industry is stuck in an “IT is from Mars, Building Controls are from
Venus” mentality. The movement of BAS manufacturers into IT, as well as
IT companies into building controls has been feeble at best.
The driver for
improved building management systems is really the
increase in the complexity of the new buildings. From an equipment or
hardware perspective we now have buildings with energy and
sustainability systems which are relatively new for buildings, systems
that even five years ago were not commonplace. These include systems
such as rain water harvesting, exterior shading, water reclamation,
renewable energy, electric switchable glass, sun tracking systems, etc.
Maintaining and optimizing each of these new systems is a challenge,
further burdening and increasing complexity for facility management.
The other aspect of increased complexity is related to management decisions regarding building operations that now involve several other variables. For example, let’s assume a building manager wants to respond to market-based energy pricing from a utility. In making a decision on whether or how to respond the building manager has to take into account several financial and operational variables, including tangible and intangible benefits and costs. How much load can I shed? How can I shed it? What’s my typically demand profile during the timing and duration of the event? How do I factor in the need to support the ongoing business? How do I implement, monitor and measure? What’s the effect on occupant comfort? How do I communicate to everyone affected by the event? Do I forgo the pricing signal to keep the business operation as usual? Do I use auxiliary energy generation? What’s the maximum demand I can curtail?
These types of challenges and decisions are way beyond the typical question of “What should the set point be?” Obviously, some of these issues can be studied and a policy or program can be implemented but eventually a final decision would have to take into account real-time circumstances. This is where analytic and automation software tools and applications can support the operations and facility personnel, yet traditional BMS systems aren’t capable of providing those applications.
Specifications for the Future Building Management System (FBMS)
Some innovative medium-sized companies around the globe have made the first significant steps in providing building management systems that are beginning to meet today’s challenges in building operations. What follows is a list of “must haves” in the FBMS:
building management system will change and reinvent what
currently is a lethargic industry. It’s also likely to spawn new
companies and manufacturers, provide more choices for users and the
buyers of such products, and do so at lower costs.
information, write us at firstname.lastname@example.org.
*Photos courtesy of Google Images.
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