AUTOMATION OF GUEST HOUSE BUILDING

Abstract

The developments in the field of Industrial automation, various open and interoperable network protocols for sensor networking, data and computer communications, Mobile communications data processing software's , web based technology(internet) have given a birth to Building Automation System(BAS). "Building automation systems (BAS) is programmed, computerized, and intelligent network of electronic devices that monitor and control various subsystems (Lighting, Security, HVAC(Heating, Ventilation And Air Conditioning) , data communications) in the building. The main goal of BAS is to provide security and comfort to occupants, and to reduce energy and maintenance costs when compared to a non-controlled building ". Before start of actual design of a BAS, IP camera and stand-alone security control system were implemented in laboratory. Later BAS was designed for N.C.Nigam Guest House Building (GHB) of IIT Roorkee. For design of BAS for GHB , first the architectural design of GHB was analyzed and then a hierarchal network was designed. For the latter a study of various wired and wireless sensor network technologies suitable for BAS was carried out. Based on comparative study of network protocols ,Modbus has been selected for data acquisition from various sensors(smoke, glass break, motion, pet immune, and door sensors) and controlling of various external electrical appliances(light, fan, AC etc.) through actuators. The other networks in BAS for GHB are Ethernet, WiFi, and Mobile telephone network. Ethernet is used to create a wired LAN (local area network) so that it connects server , client and any network device like IP camera, thus allowing a user(client) to monitor and control the BAS from the main program front panel, and to control IP camera, both remotely. WiFi serves similar purpose of remote monitoring and control like Ethernet, but it is used to implement a wireless LAN so that client or any WiFi compatible network device(like WiFi-capability IP camera) connects to server through an access point and allows flexibility for network devices to move from one place to other. Mobile telephone network is used to have iv communications between any mobile phone and GSM modem connected to server. The main software's used are NAPOPC DA, an OPC(OLE(Object Linking and Embedding)for Process Control) Server for configuring modbus devices, Labview for data processing, and IP camera access software to configure, monitor and control the camera. The main program developed with Labview allows monitoring of sensor status in any room or corridor on the server or on any client front panel. If any event occurs, it displays event message on front panel and on excel sheet (datalog), sends audible alarm in that area, also sends voice alarm through speaker, email and SMS to the master. The program enables control any appliance in any room, corridor or lawn either by sending command through local server or from any client or mobile phone through SMS.