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Building intelligence with
Smart Building Automation System (SBAS)
Application Note
Overview
This application note focuses on integration of the building
management systems/equipments with the surrounding built
environment for efficient energy management. The Smart
Building Automation System (SBAS) focuses on three main
areas:
:Energy Management and Sensors
:Security and Monitoring
:Actuators and Data logging
Smart BuildingAutomation System (SBAS)
Building intelligence starts with monitoring and controlling
information services known as Smart Building Automation System
(SBAS). Smart building automation project is an integrated
building solution system that facilitates lighting control, heating, air
conditioning (HVAC) and access control to share information and
strategies with an eye to reduce energy consumption, improve
energy efficiency management, provide value-added functionality
and make the building easier to operate. An integrated system can
not only increase energy and operational efficiency, but it can also
provide a level of occupant control unmatched by single-purpose,
non-integrated systems.
Figure 1.
Building Automation System application
Basic block diagram for a Smart
ENERGY AND LIGHTING
SECURITYHOME APPLIANCES
WIFI
MODULE
MODULE
BATTERY
POWER
SYSTEM
LCD & TOUCH
MAIN MODULE
DDR
NAND
MPU
DAC
WIFI
MODULE
Temperature Sensor
Light Sensor
Humidity Sensor
Serial Interface
ZIGBEE
MODULE
Intelligent building, with the use of automated control system
such as SBAS, enables both building owners and occupants to
enjoy the benefits of financial gain and enhance comfortable
accommodation/management quality.
SBASArchitecture
Building automation and control systems rely on many sensors and
actuators placed at different locations throughout a building.
Reducing the power consumption of a modern building requires
continuous monitoring of various environmental parameters inside
and outside the building. The key requirement for an efficient
monitoring and controlling is that all sensors and actuators are
addressable over the network.
SBAS includes a collection of sensors that determine the condition
or status of parameters to be controlled, such as lighting,
temperature, relative humidity, and pressure. An action based on
the sensor data received by the control unit is imparted to a device
like electric relays or damper and valve actuators via electronic
signals to activate physical action to control the devices.
In this application note, we will provide a design overview for the
SBAS Control Unit.
Key Specifications of SBAS Control Unit
Hardware
TI’sARM 32 Bit Cortex Processor
Flash Memory: 64MB for application and OS (Linux) Storage
SDRAM DDR3: 16-bit 128MB for application and OS
program execution
SRAM: 1MB for non-volatile parameter storage
12 BitADC (SAR) and DACs
Enhanced High-Resolution PWM Modules
VFD (Variable frequency drive for motor control)
Encoders
Signal Conditioning ICs
DC Relays (For ON/OFF Control)
Electrical Interfaces
Wi-Fi Built in module (WAN)
Zigbee Wireless built in module
2X 10/100/1000-TEthernet interfaces
6X UART(5 with h/w flow control)
RS-422/485 Interface for easy integration with gateways
4.-20Ma 2-wire interface (for flow sensors)
4 wire interface for stepper motor
Software
Diagnostics software for all the interfaces
X-Loader porting to custom platform
U-Boot porting to the custom platform
Kernel Porting to the custom platform
Testing the Linux port using custom testApplication
SNMPbased status monitoring
Event generation through e-mails/data logging
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GUI application for data monitoring and statistical data
representations
System Integration andTesting.
Intelligent Features
The SBAS enables intelligent features such as:
Air flow control: When occupants in the room increase, the
thermostat will sense the increase in the room temperature.
Control unit will open its damper allowing more air to the room,
which will cause a drop in the duct static pressure sensed by the
duct static pressure sensor. In order to maintain the static pressure
in the duct, the SBAS activates the VSD to increase the fan speed
which builds up the duct pressure to the desire point.
Temperature and fan control system: When the control unit is
not functioning, the SBAS detects and communicates the ‘OFF’
status of the unit, thus shutting it down. For example, if the room
temperature is fixed at 25 degree Celsius, but the actual room
temperature is 27 degree Celsius, SBAS will open the chilled water
valve. Once the temperature falls below 25 degree Celsius, the
SBAS will shut the valve.
Lighting System: The Lighting System can be controlled using
motion and detection sensors that detect occupancy and motion.
On/Off switches can be configured based on pre-defined time
schedules. Daylight-linked automated response systems can also
be incorporated in to the system.
Benefits
Energy efficient and reduced cost
Increased energy efficiency can save a substantial amount
of costs by effectively controlling equipment use. In addition,
it is far easier to monitor aspects of the system for potential
problems or provide preventative maintenance
Streamlined operations management
Smart building automation greatly reduces operational
expenses and the hassle of installing and operating multiple
autonomous building systems
Managers and operators can view data from all over the
facility and make quick changes or provide preventative
maintenance
Lower installation costs and Lower failure rates and
downtime
Quick and effective service
Building Management can provide better services to
occupants and users. Accessing building systems via
remote makes it easier for facilities professionals to assess
real-time conditions, detect problems, and monitor building
performance off-site
Data accuracy and report generation
More accurate data monitoring and control of energy-
intensive systems like HVAC and lighting, and statistical
data report generation help keep costs in check
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Customer attraction and retention
Smart buildings can demand above-market rents, have
lower vacancy rates, and can have reduced turnover
through higher customer service, added technologies, and
increased efficiency.
Environment friendly
Monitoring and control of energy use for the purpose of
reducing consumption defines a green building. While it may
be possible to have a green building that isn't smart, most
green buildings will have some form of a building automation
system (SBAS).
Product cost
The entire system comprises of a compact unit, integrated
interface and conferencing into a single device, which saves
on BoM and production cost for the customer
Summary
Mistral has the expertise in designing and developing Home
Automation Solutions that allows every point of a smart home to be
connected and controlled from a central or remote location.
Mistral’s team of engineers has the expertise of providing a variety
of power optimized, small footprint home automation solutions on
leading architecture and platforms. Mistral’s expertise in Home
automation designs includes
Customized ProductArchitecture
Hardware Design and Development
Software Design and Development
Application Design and Development
Product Certifications and Deployment
Support and Maintenance
Design Consultation and Review.
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Figure 2. Smart Building Automation System
Data logging &
Event Generation
Central
control UnitLighting
Air conditioning &
Temperature Control
Energy
management
& Sensors
Actuators and
Data logging
Security and
Monitoring
Access Control
Monitoring
Camera
Ethernet
Smart Meter
Gateway
About Mistral
Mistral is a technology design and systems engineering company providing end-to-end solutions for product design
and application deployment. Mistral is focused in two business domains: Product Engineering Services and
Defense & Homeland Security. Mistral provides total solutions for a given requirement, which may include hardware
board design, embedded software development, FPGA design, systems integration and customized turnkey
solutions. Mistral's strategic partnerships with leading technology companies help provide customers with a
comprehensive package of end-to-end solutions.
Mistral's Product Engineering Services are delivered through a proven development process, designed for
embedded product development. Mistral's hardware and software team works together in a seamless manner
providing expert product designs covering board and FPGADesigns, BSP and Firmware developments, Embedded
Application developments, integration of 3rd party solutions, verification/validation, product prototyping, production
coordination and product sustenance services.
www.mistralsolutions.com
©Copyright 2014, Mistral Solutions Pvt. Ltd. All rights reserved. & ...Partners in Real Time are registered Trademarks and Logos of Mistral. All other
Trademarks and Tradenames are the property of the respective owners.
Mistral Solutions Pvt. Ltd.,
No.60, 'Adarsh Regent',
100 Ft. Ring Road,
Domlur Extension, Bangalore - 560 071
Tel: +91-80-3091-2600
Fax: +91-80-2535-6440
E-mail: info@mistralsolutions.com
Mistral Solutions Inc.,
4633 Old Ironsides Drive,
Suite 410, Santa Clara,
CA 95054
Tel: +1-408-705-2240
Fax: +1-408-987-9665
E-mail: usa@mistralsolutions.com
Branch Offices:
INDIA
! Hyderabad
! New Delhi
USA
! Dallas, Texas

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Building intelligence with Smart Building Automation System (SBAS)

  • 1. Building intelligence with Smart Building Automation System (SBAS) Application Note Overview This application note focuses on integration of the building management systems/equipments with the surrounding built environment for efficient energy management. The Smart Building Automation System (SBAS) focuses on three main areas: :Energy Management and Sensors :Security and Monitoring :Actuators and Data logging Smart BuildingAutomation System (SBAS) Building intelligence starts with monitoring and controlling information services known as Smart Building Automation System (SBAS). Smart building automation project is an integrated building solution system that facilitates lighting control, heating, air conditioning (HVAC) and access control to share information and strategies with an eye to reduce energy consumption, improve energy efficiency management, provide value-added functionality and make the building easier to operate. An integrated system can not only increase energy and operational efficiency, but it can also provide a level of occupant control unmatched by single-purpose, non-integrated systems. Figure 1. Building Automation System application Basic block diagram for a Smart ENERGY AND LIGHTING SECURITYHOME APPLIANCES WIFI MODULE MODULE BATTERY POWER SYSTEM LCD & TOUCH MAIN MODULE DDR NAND MPU DAC WIFI MODULE Temperature Sensor Light Sensor Humidity Sensor Serial Interface ZIGBEE MODULE
  • 2. Intelligent building, with the use of automated control system such as SBAS, enables both building owners and occupants to enjoy the benefits of financial gain and enhance comfortable accommodation/management quality. SBASArchitecture Building automation and control systems rely on many sensors and actuators placed at different locations throughout a building. Reducing the power consumption of a modern building requires continuous monitoring of various environmental parameters inside and outside the building. The key requirement for an efficient monitoring and controlling is that all sensors and actuators are addressable over the network. SBAS includes a collection of sensors that determine the condition or status of parameters to be controlled, such as lighting, temperature, relative humidity, and pressure. An action based on the sensor data received by the control unit is imparted to a device like electric relays or damper and valve actuators via electronic signals to activate physical action to control the devices. In this application note, we will provide a design overview for the SBAS Control Unit. Key Specifications of SBAS Control Unit Hardware TI’sARM 32 Bit Cortex Processor Flash Memory: 64MB for application and OS (Linux) Storage SDRAM DDR3: 16-bit 128MB for application and OS program execution SRAM: 1MB for non-volatile parameter storage 12 BitADC (SAR) and DACs Enhanced High-Resolution PWM Modules VFD (Variable frequency drive for motor control) Encoders Signal Conditioning ICs DC Relays (For ON/OFF Control) Electrical Interfaces Wi-Fi Built in module (WAN) Zigbee Wireless built in module 2X 10/100/1000-TEthernet interfaces 6X UART(5 with h/w flow control) RS-422/485 Interface for easy integration with gateways 4.-20Ma 2-wire interface (for flow sensors) 4 wire interface for stepper motor Software Diagnostics software for all the interfaces X-Loader porting to custom platform U-Boot porting to the custom platform Kernel Porting to the custom platform Testing the Linux port using custom testApplication SNMPbased status monitoring Event generation through e-mails/data logging : ! ! ! ! ! ! ! ! ! ! : ! ! ! ! ! ! ! : ! ! ! ! ! ! ! ! ! : ! : ! ! ! : ! : ! GUI application for data monitoring and statistical data representations System Integration andTesting. Intelligent Features The SBAS enables intelligent features such as: Air flow control: When occupants in the room increase, the thermostat will sense the increase in the room temperature. Control unit will open its damper allowing more air to the room, which will cause a drop in the duct static pressure sensed by the duct static pressure sensor. In order to maintain the static pressure in the duct, the SBAS activates the VSD to increase the fan speed which builds up the duct pressure to the desire point. Temperature and fan control system: When the control unit is not functioning, the SBAS detects and communicates the ‘OFF’ status of the unit, thus shutting it down. For example, if the room temperature is fixed at 25 degree Celsius, but the actual room temperature is 27 degree Celsius, SBAS will open the chilled water valve. Once the temperature falls below 25 degree Celsius, the SBAS will shut the valve. Lighting System: The Lighting System can be controlled using motion and detection sensors that detect occupancy and motion. On/Off switches can be configured based on pre-defined time schedules. Daylight-linked automated response systems can also be incorporated in to the system. Benefits Energy efficient and reduced cost Increased energy efficiency can save a substantial amount of costs by effectively controlling equipment use. In addition, it is far easier to monitor aspects of the system for potential problems or provide preventative maintenance Streamlined operations management Smart building automation greatly reduces operational expenses and the hassle of installing and operating multiple autonomous building systems Managers and operators can view data from all over the facility and make quick changes or provide preventative maintenance Lower installation costs and Lower failure rates and downtime Quick and effective service Building Management can provide better services to occupants and users. Accessing building systems via remote makes it easier for facilities professionals to assess real-time conditions, detect problems, and monitor building performance off-site Data accuracy and report generation More accurate data monitoring and control of energy- intensive systems like HVAC and lighting, and statistical data report generation help keep costs in check
  • 3. : ! : ! : ! Customer attraction and retention Smart buildings can demand above-market rents, have lower vacancy rates, and can have reduced turnover through higher customer service, added technologies, and increased efficiency. Environment friendly Monitoring and control of energy use for the purpose of reducing consumption defines a green building. While it may be possible to have a green building that isn't smart, most green buildings will have some form of a building automation system (SBAS). Product cost The entire system comprises of a compact unit, integrated interface and conferencing into a single device, which saves on BoM and production cost for the customer Summary Mistral has the expertise in designing and developing Home Automation Solutions that allows every point of a smart home to be connected and controlled from a central or remote location. Mistral’s team of engineers has the expertise of providing a variety of power optimized, small footprint home automation solutions on leading architecture and platforms. Mistral’s expertise in Home automation designs includes Customized ProductArchitecture Hardware Design and Development Software Design and Development Application Design and Development Product Certifications and Deployment Support and Maintenance Design Consultation and Review. ! ! ! ! ! ! ! Figure 2. Smart Building Automation System Data logging & Event Generation Central control UnitLighting Air conditioning & Temperature Control Energy management & Sensors Actuators and Data logging Security and Monitoring Access Control Monitoring Camera Ethernet Smart Meter Gateway
  • 4. About Mistral Mistral is a technology design and systems engineering company providing end-to-end solutions for product design and application deployment. Mistral is focused in two business domains: Product Engineering Services and Defense & Homeland Security. Mistral provides total solutions for a given requirement, which may include hardware board design, embedded software development, FPGA design, systems integration and customized turnkey solutions. Mistral's strategic partnerships with leading technology companies help provide customers with a comprehensive package of end-to-end solutions. Mistral's Product Engineering Services are delivered through a proven development process, designed for embedded product development. Mistral's hardware and software team works together in a seamless manner providing expert product designs covering board and FPGADesigns, BSP and Firmware developments, Embedded Application developments, integration of 3rd party solutions, verification/validation, product prototyping, production coordination and product sustenance services. www.mistralsolutions.com ©Copyright 2014, Mistral Solutions Pvt. Ltd. All rights reserved. & ...Partners in Real Time are registered Trademarks and Logos of Mistral. All other Trademarks and Tradenames are the property of the respective owners. Mistral Solutions Pvt. Ltd., No.60, 'Adarsh Regent', 100 Ft. Ring Road, Domlur Extension, Bangalore - 560 071 Tel: +91-80-3091-2600 Fax: +91-80-2535-6440 E-mail: info@mistralsolutions.com Mistral Solutions Inc., 4633 Old Ironsides Drive, Suite 410, Santa Clara, CA 95054 Tel: +1-408-705-2240 Fax: +1-408-987-9665 E-mail: usa@mistralsolutions.com Branch Offices: INDIA ! Hyderabad ! New Delhi USA ! Dallas, Texas