Archive for the ‘Climate control networks’ Category

Building Networks: What do we mean?

Monday, June 15th, 2009

While we can expect the various networks to be interconnected and generic cialis interoperate, it is helpful to think of them as distinct networks to assess consumption and savings, requirements for efficiency, and policy needs.

The network types are:

Electronic networks
These are oriented to either information technology, or to audio/visual entertainment – consumer electronics. These two are merging and are characterized by large volumes of data.

Lighting networks
Lighting is not traditionally considered a heavily networked end use, but it is arguably the first (albeit non-digital) example of networking in buildings with multiple fixtures often attached to a set of controls (switches, sometimes multiple). More recently occupancy and other sensors have been added, along with controls like dimming. Data rates are usually very low.

Climate control networks
Heating and cooling systems have sensors, actuators, thermal systems, and human interfaces. Like lighting, these are also a crude network, and also have yet to enter the digital age in most buildings.

These networks have been traditionally closed but would benefit from greater interaction and integration with other building networks. Data rates also low.

Electrical control networks
Control of switchgear, electrical generation, CHP, metering where a mixture of real time and data collection is required.

Metering data collection
Data collection of electrical, water, gas and energy consumption, for the purpose of either revenue collection or secondary metering, as to comply with building regulations.

Security networks
These include smoke and carbon monoxide detectors, fire alarms, security systems (window/door sensors, occupancy sensors), doorbells, security cameras, and leak detectors. Except for some cameras, all tend to have dedicated wiring.

Other networks
These cover principally appliances, and miscellaneous controls such as for windows. These are likely to be appended to other networks, not a driver of networks on their own.

In many buildings these networks will share information from sensors about occupancy and special states such as fire or other emergency. Expressing preferences and monitoring of building operation also will require interconnections.