reports
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10. 9. 2012
made by employees of Faculty of Mechanical Engineering |
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4. 9. 2012
performed by colleagues of FME |
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20. 8. 2012
made by students and employees of FME |
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28. 6. 2012
made by students and employees of Faculty of Health Sciences |
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daylighting of Cell spaces |
28. 5. 2012
made by students of Faculty of Architecture |
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10. 2. 2012
made by students and employees of FME |
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8. 2. 2012
made by students and employees of Faculty of Mechanical Engineering |
| Building services in modern buildings are connected to building management systems. BMS controls their operation, which provides the optimal thermal comfort at the lowest energy use. The central unit of BMS is the controller that receives signals from sensors and controls devices through the actuators. This requires a standardized method of transmitting information, which also enables the integration of various controllers. The problem is that many communication protocols were developed such as BACnet, LonWorks, Modbus, KNX EIB and others. In the Cell, we used the Honeywell HAWK 200 controller, which has the operating system designed on the Niagara Framework technology, which is characterized by the controller and can be integrated into the system with any of the mentioned communication protocols. In addition HAWK controller also acts as a Web server and it can contain or generates a websites. |
Controller HAWK 200
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The microprocessor controller HAWK has an operating system COACH Ax. This allows the controller to recognize a variety of communication protocols,
enabling control, monitoring, recording information and data, alarming, setting schedules, operation, management trough on-line access to the controller and operation as a Web server.
HAWK controller connects to external devices or systems via I/O busses: LAN1 and LAN2 for IP network connection, RS485 to two wire connection to MODBUS or BACnet protocols and RS232 interface. In the expansion slot a LON protocol recognition module can be added, which is the most widely used in the building services, or a GPRS module for wireless data transfer. For use in the Cell, it is important to be able to connect on the right side of HAVK controller a Niagara Direct Input and Output modules. In the Cell IT - 34 NDIO is used. This is a module with 16 universal inputs, 8 analog outputs (0 - 10 V, 0.5 A max) and 10 digital (relay) outputs. Universal input signal can be analog (thermistor - for temperature measurement, voltage (0-10 V) or current (4 - 20 mA) or digital (pulse counter). |
| In the Cell HAWK controller connected via LAN1 port to the wireless router with a Wi-Fi transmitter, LAN2 interface is used for data transfer to a PC and COACH programming. IO 34 IT NDIO receives data from sensors and controls the ventilation system fans via analog outputs. The controller has an internal memory of 16 Mb and data can be transferred to other devices in the form of xls data files via LAN2 interface. |
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Connecting to the HAWK controller
| The controller can be accessed via the IP interface by LAN2 or Wi-Fi connection by a PC, tablet or smartphone in two ways. As administrator (LAN2 -> PC) or user (LAN1 -> Wi-Fi router -> i-user). Each of them has its own IP address: 192.168.2.200 for administrator and 192.168.10.200 for user. Administrator can modify the program in the controller`s processor (adds new links to the NDIO input /output module, modifies alarms or changes the method of quantities calculation). User can view by the controller created web site. An example of such a website is SmartMonitor. Mode depends on if the device`s operating system fully supports JAVA drivers. This applies to both Windows and Linux operating systems and partly to other OS. User`s connectivity with the controller is not limited. More about this: SmartMonitor -> more ... While the user`s access is opened (user name celica, password celica), administrator access is restricted with password. Data transfer from the controller`s memory to the computer is permitted only to the administrator. |