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Mini p gsm based display

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  • 1. MINI PROJECT REPORTOnSYNOPSIS OF GSM BASED ELECTRONICNOTICE BOARD SUBMITTED BY:Ashutosh Singh 0821331024Akash Chandel 0821331005BTech ECE 4th Year--------------------------------------------------------------------------------------------------- Department of Electronics and Communication Engineering Hindustan Institute of Technology I

2. 32, 34, Knowledge Park-III, Greater Noida, U.P TABLE OF CONTENTS1. Acknowledgement2. Introduction3. Methodology4. Scope of Work5. Aims of GSM electronics board6. Objectives of the GSM electronics board7. Theoretical Background8. GSM architecture9. GSM frequencies10.Main Cellular Standards11.Literature Review12.Network Structure13.Subscriber Identity Module(SIM)14.Tentative model to be employed15.Main Circuit Diagram16.Programmer II 3. 17.Conclusion INTRODUCTIONGSM and GPRS based Designs have developed another innovative andPublic utility product for mass communication . This is a Scrolling (Moving)Message Electronic Display Board which displays the messages received asSMS or GPRS Packets. Such Displays can be kept at differentparts of the city and the messages like Advertisements, News. Public cansend flash information from Mobiles or PCs to these displays for instantviewing. These displays are designed to quickly display large amounts ofinformation in the liquid crystal display. Wireless communication hasannounced its arrival on big stage and the world is going mobile . Wewant to control everything and without moving an inch. This remote controlelectronic notice board is possible through Embedded Systems. The use ofEmbedded System in Communication has given rise to many interestingapplications that ensures comfort and safety to human life. The main aim ofthe project will be to design a SMS electronic display toolkit which canreplace the currently used programmable electronic display. The message tobe displayed is sent through a SMS from an authorized mobile phone. Thetoolkit receives the SMS, validates the sending Mobile Identification III 4. Number (MIN) and displays the desired information after necessary codeconversion. The system is made efficient by SIMs so that the SMS can bereceived by number of display boards in a locality using techniques of timedivision multiple access. I have improved upon the currently usedprogrammable electronic display and tried to take advantage of thecomputing capabilities of microcontroller. I envision a toolkit that will notonly display message but also can be used to do some mechanical work.Looking into current trend of information transfer in this campus (SHARDAUNIVERSITY), it is seen that important notice take time to be displayed onthe notice boards. This latency is not expected in most of the cases andmust be avoided. It is proposed to implement this project at the institutelevel. It is proposed to place display boards in major access points. Theelectronics displays which are currently used are programmable displayswhich need to be reprogrammed each time. This makes it inefficientfor immediate information transfer, and thus the display board loses itsimportance. The GSM based display toolkit can be used as add-on to thisdisplay boards and make it truly wireless. The display board programs itselfwith the help of the incoming SMS with proper validation. Such asystem proves to be helpful for immediate information transfer. The systemrequired for the purpose is nothing but a Microcontroller based SMS box.The main components of the toolkit include microcontroller, GSM modem.These components are integrated with the display board and thus incorporatethe wireless features. The GSM modem receives the SMS. The ATcommands are serially transferred to the modem through MAX232. In returnthe modem transmits the stored message through the wireless link. Themicrocontroller validates the SMS and then displays the message in the LCDdisplay board. Various time division multiplexing techniques have been usedto make the display boards functionally efficient. The microcontrollerIV 5. used in this case is ATMEL AT89S52 .Motorola C168 is used as the GSMmodem. In this prototype model, LCD display is used for simulationpurpose. The results presented in the thesis support the proper functionalitiesand working of the system. The timing diagram suggests the response of themodem to various AT (attention) commands. METHODOLOGYThe method used to carry out this project is the principle of serialcommunication in collaboration with embedded systems. This is a very goodproject for college, police etc. This project has a moving message display,which will be used as the digital notice board, and also a GSM modem,which is the latest technology used for communication between the mobileand the embedded devices. System will work like when the user wants todisplay or update the notice board, he has to send the message in his mobiledefining the messages and then the password of the system to the number ofthe subscriber identity module (SIM) which is inserted in the display systemMODEM. Then, the MODEM connected to the display system will receivethe SMS, the microcontroller inside the system is programmed in such a waythat when the modem receives any message the microcontroller will read themessage from serial headphone and verify for the password, if the passwordis correct then it will start displaying the messages in the display system. V 6. SCOPE OF WORKWe will use liquid crystal display for displaying the message; We will alsouse GSM modem (Motorola c168) as my display interface. The LCD displayis limited to display 18 characters; the reason is because we are using 16 by2 LCD. The LCD can be replacing with larger type without anyprogramming. I will send message from any phone irrespective of the GSMnetwork to the modem connected to the programmable device using apassword. The message will display on the liquid crystal display connectedto the programmable display. VI 7. AIMS OF THE GSM ELECTRONICNOTICE BOARD Uses in Banks: There is a huge mass of population which depends uponthe banks for all their monetary transactions. To keep a proper track of suchhuge mass of people and their transactions this technology helps with certaindegree of effectiveness. Uses for Traffic Control : Its known to all of us that traffic are the goodservants of the people and also the major invention to help people but only ifit is managed well otherwise we all know Bangalores traffic how ridiculousand irritating it can be. So with the use of this technology we can maintainthe flow of traffic according to the needs of the people and also consideringthe availability of roads. Uses for advertisement : We can make use of this technology to displaythe different advertisement on display panels to reach the larger number ofpeople at a time and in the populated places like shopping malls, road sides VII 8. as well as at the theaters, discos, hotels, motels, restaurants etc about theirproducts and features. Uses in Educational sector : Currently in Nigeria we are relying on theold style of displaying news by hanging bare time consuming papers on thenotice board which can be replaced by remote controlled notice boards at thecolleges and universities, also at the time of examination scheduling andresult publishing etc. Information purpose: It would be wiser to make a use of this technologyfor information purpose like news and its updates, real time reporting, livetelecasting, inclusive of various information which adds to the advanced andbusy life on daily basis. Stock Exchange: The stock exchange is the hot topic nowadays. Thereare millions of sales of shares every hours and it is very necessary tomaintain the real time services with the certain measures of reliabilitybecause it deals with the money large number of the small or biggerinvestors. With the help of this technology we can make it far easier andreliable.VIII 9. Organizations: Every organization has large number of employees whoare assigned to accomplish the various tasks and each and everything shouldbe documented for the future reference purpose. And also their scheduleswork reports, leaves, presentation as well as distribution of salary etc OBJECTIVES OF THE GSM ELECTRONIC NOTICE BOARD Programming of the mobile phone with AT (Attention) commandsequence Interfacing the programming chip with the personal computer Interfacing the programmable chip with the electronic board display Interfacing of the mobile phone with the programmable chip Sending messages from the remote phone to the electronic boardIX 10. THEORETICAL BACKGROUNDGSM (Global System for Mobile communications: originally fromGROUPE Spcial Mobile) is the most popular standard for mobile phones inthe world. Its promoter, the GSM Association, estimates that 80% of theglobal mobile market uses the standard. GSM is used by over 3 billionpeople across more than 212 countries and territories . Its ubiquity makesinternational roaming very common between mobile phone operatorsenabling subscribers to use their phones in many parts of the world. GSMdiffers from its predecessors in that both signaling and speech channels aredigital, and thus is considered a second generation (2G) mobile phonesystem . This has also meant that data communication was easy to build intothe system X 11. GSM ARCHITECTUREGSM is a complex system and difficult to understand. The Mobile Station(MS) refers to the mobile equipment . The Base Station Subsystem controlsthe radio link with the Mobile Station. The Network Subsystem performsmain functions such as switching of calls between mobile users, mobilitymanagement operations, and proper operation and setup of a network .These functions are controlled by the Mobile Services Switching Center(MSC). GSM FREQUENCIESGSM networks operate in a number of different frequency ranges (separatedinto GSM frequency ranges for 2G and UMTS frequency bands for 3G).Most 2G GSM networks operate in the 900 MHz or 1800 MHz bands. Somecountries in the

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