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Rfid and gsm based cas


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when people share something on internet and suddenly someone is looking for some useful information related to what he want and suddely if he see your shared information then it become communication at any location

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Rfid and gsm based cas

  1. 1. PRESENTATION OUTLINE A)Introduction to RFID B) Working principle C) GSM Module D) Flow chart of class attendance system E) Advantage of technology F)Why RFID G) RFID V/S BAR CODE H) Application field I) Pros and Cons J) Conclusion
  2. 2. RFID STANDS FOR…. RADIO FREQUENCY IDENTIFICATION GSM STANDS FOR …… GLOBAL SYSTEM FOR MOBILE COMMUNICATION “We need technology in every classroom and in every student and teacher’s hand because it is the pen and paper of our time,and it’s the lens through which we experience much of this world” –David Warlick
  3. 3. 1. Introduction to RFID
  4. 4. KEY COMPONENT TO BE USED FOR CLASS ATTENDANCE A) An RFID Tag B) An RFID Reader C)GSM MODULE D)Data bus E)LCD(1.120 kp) F)AVR microcontroller G) An RFID Station/PC
  5. 5. A) AN RFID TAG
  6. 6. An RFID Tag are made of :- 1) Chip :- Hold information about physical object 2) Antenna :-Transmit signal at radio frequency 3) Package :-encase chips and antenna so that tag can be attached to physical object Tags are- Active Tag Passive Tag Power –Battery Power-No(get from reader through mutual inductance) Signal –stronger Signal –Weaker Range-100 feet Range-few inches. NOTE :- These cards are known as proximity card
  7. 7. B)AN RFID READER An RFID Reader is a device used to gather data information from an rfid tag,which is used to track individual objects.Radio waves are used to transfer data to RFID reader from an rfid tag Transfer of energy from one circuit[READER] to another[CARD] by mean of electromagnetic waves at Radio frequency through mutual inductance
  8. 8. C) GSM GSM is a 2nd generation[2-G] cellular standard developed to cater voice services and data delivery using time division multiplication access[TDMA] GSM SERVICES Tele services :-Includes mobile phones and emergency calls etc. data services :-Includes SMS(short messge service),Fax,voice mail,electronic-mail. Supplementary service:-I/C&O/G calls,call forwarding,call holding,call waiting,conference etc.
  9. 9. E) LCD(1.120KP) a)liquid crystal display b) cheap and easy way to display text c) various configurations(1line *20characters,2line*16 chaaracters) d) the display has two register d.1) command register d.2) data register e) by RS you can select register f) data line(db7-db0)used to transfer data and commands
  10. 10. E) AVR MICROCONTROLLER As a microprocessor is a heart of general purpose computer in the same way the microcontroller is a heart of embedded system A microcontroller is a single chip containing at least a cpu,non-volatile memory(e.G.Rom,prom,eprom,eeprom,flash),volatile memory(s-ram,d- ram),a timer and I/O controlling unit. Where flash memory is mainly used for microcontroller.
  11. 11. Introduction TO CAS Attendance in colleges is generally paper based which may sometimes cause errors.Taking attendance manually consumes more time.So the proposed attendance system uses RFID and GSM technology to take attendance.In this system,each student is issued an RFID tag.The controlling unit is in institute.whenever the card is placed near the reader,it will take the attendance and increment the student attendance variable.In case if the student is absent for any class day the gsm module is used to make a call to their parents to inform.
  12. 12. FLOW CHART
  14. 14. 1.)Proxy attendance can be caught. 2.)Hardcopy paper work of attendandacesheet is reduced 3.)Data can be stored long time compare to attendance sheets. ADVANTAGE RFID V/S BAR CODE COMPARISON RFID and BAR Codes are similar in that they are both data collection technologies,meaning they automate the process of collecting data.
  15. 15. RFID BAR CODE Line of sight Not required (In most cases) Required Read Range Passive UHF RFID : -upto 40 feet(fixed readers) -upto 20 feet(handheld readers) Active RFID : -upto 100’s feet or more Several inches upto several feets. Read Rate 10’s,100’s,or 1000’s simultaneously Only one at a time Identification Can uniquely identify each item /asset tagged Most barcodes only identify the type of item(UPC code)but not uniquely Read/Write Many RFID tags are Read/Write Read only Technology RF(Radio frequency) Optical(LASER) Interference Like TSA(Transportation security administration),same RFID frequencies don’t like metal and liquids.They can interference with same RF frequencies Obstructed barcodes cannot be read(dirt covering barcode,torn barcode,etc).
  16. 16. Application of RFID based attendace system 1)RFID baseed attendance system can be used in educational institutions,bank offices,industries,anywhere. 2)RFID is emerging technology and is used where authentication application is needed. OTHER APPLICATIONS OF RFID TECHNOLOGY 1.)people track 2.)Document trackin 3.)Health care 4.)Manufacturing 5.)Department of road transportation and highways 6.)Center for railway information system 7.)Apparel tracking 8.)Laptop tracking Automation Automation Most “fixed” readers don’t require human involvement to collect data(automated) Most barcode scanners require a human to operate(labor intensive)
  17. 17. PROS AND CONS PROS CONS -RFID tags are very simple to install/inject inside the body of animal,thus helping to keep tract on them. -Expensiveness of technology than Bar code -The RFID tags can store data upto 2kb. -The RFID technology can not be easily replicated and therefore,it increases the security of the product. Collision : -signals can ‘collide’when multiple signals are read at once -Those signals are either lost or read with errors -mobility -failure -Unlimited scope -still evolving -reduced human intervention
  18. 18. CONCLUSION +RFID Is helpful in tracking assets–human and machine +Used in inventory control +Scope limited by imagination of its implementation FUTURE PROSPECTS + Can be extended to embedded system Ex:-so the RFID chip can be embedded within the laptop for tracking + Application software can be made web based