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Building management system (BMS)

What is BMS (Building Management System) ?

Central monitoring system allows:
- acquisition of data, information, signals and statuses from all systems integrated in buildings
- archiving of data into central database (e.g. MS SQL Server)
- operation and management of buildings with unified operator interface
- conservation of energy resulting from optimalization of heating, energy consumption regulation (control of lights, ventilation, heating, HVAC, etc.)

BMS system includes

Monitoring and evaluation of data from security systems:
- elektronic security systems, e.g. the Galaxy system
- elektronic fire alarm systems e.g. the Esser central (by Honeywell)
- monitoring of other malfunction signals (switchboards, lifts, emergency energy sources, etc.)

Monitoring and regulation of heating and energetic devices
- heating and water boilers
- regulation of boiler rooms and heat exchange stations
- monitoring and regulation of HVAC
- monitoring of operation statuses, control of technologies based on defined time schedules or contractual consumption diagrams

Measuring and evalueation of energy consumption (electricity, water, heat, gas ...)
- monitoring and evalueation of energy consumption in defined time-range based on specific criteria:
1. based on measured medium type (electricity, water, heat, gas ...)
2. based on consumer
3. based on group of meters (e.g. boiler room, flat unit, ...)
- monthly evalueation of consumption + possible export of data into information systems

Attendance systems
- integration of personnel attendance systems (e.g. Microsoft Access system)

Camera systems (CCTV)
- integration of camera records into the BMS monitoring system (live surveilance, record vieweng, camera control, etc.)

Monitoring and control of inteligent houses
- using communication buses DALI, KNX, BACnet etc.

BMS system input data

Request for interconnection of BMS system with other systems and devices: Measureent and Regulation (various types of PLC devices), energy meters (from various manufactureres), subsystems integrated in the building (fire alarms, security systems, cameras ..), connection to devices/buses of intelligent houses (lights, windows, devices, etc.). The standard TCP/IP protocol communication is preferable.

Security and fire alarm centrals (e.g. Esser, Bosch, ...)
- current data - direct connection via communication interface (Ethernet, RS485 etc.) or OPC servers
- history - data access via database interface ...

Measurement and regulation systems – monitoring and parametrization of boiler rooms, exchange stations, HVAC units, etc.
- communication with PLC devices of various brands (Simatic, SAIA, Mitsubishi, Unitronics, protocols Modbus, M-BUS, PmIEC8705 and and other)

Measuring of energy consumption: automated reading the data from various energy meters: Kamstrup MULTICAL, Danfoss INFOCAL-5, ABB, Siemens, etc.
- communication by standard protocols Modbus, M-BUS, IEC 60870-5
- remote transmissions using GSM, radio networks, VPN, cloud systems, ...
Database connectivity
- data imports from attendance systems
- data exports into enterprise IS (source data for energy invoicing)

Connection to devices and buses in intelligent houses
- using communication buses DALI, KNX, BACnet etc.

System architecture

The most commonly used architecture of BMS systems is client-server:

Main BMS server - provides server services for the whole system:
- Communication server – reading the data from subsystems in real time
- Data server - data archives in central database (e.g. MS SQL)
- Web server – generating data for visualization Web clients

Visualization Web clients in BMS
- uniform visualization of all technologies that are integrated in buildings, unified control system (time schedules, ...)
- monitoring of technology operation in the bulding indicating the localization of technological items in individual floors (energy meters, fire detectors and sensors, security systems, ...)
- ability to render progression of values and statuses of signals in time (trends)
- management of system alarms and events
- reports and data outputs: energy consumption reports, alarm reports, ...
- allows definition of multiple user types with varying rights and permissions:
1. reception – only monitoring, no parametrization access
2. energetics manager, technology manager, building manager, etc.
3. system administrator who is able to set system parameters
4. other (as requested by customer): tenants, etc.

Web clients advantages:
- independent on OS platform (Windows, Linux, ...) - any standard Web browser (Chrome, Firefox, Edge, InternetExplorer ...)
- easy system management - no need to install other system software components.
- easy BMS system extension by adding more Web clients
- Web client can be operated on any PC (or other device - smartphone, tablet, ...) connected to the Intranetu. Access to BMS data is protected by passwords and user permissions.
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