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2. Introduction In todays world of busy time schedules people mostly students, patients are facing many problems in tracing the faculty members and doctors in universities, schools, colleges, hospitals etc. In order to overcome this problem we have come up with a new solution entitled Personnel Presence Information Dissemination System which is an amalgam of small systems working independently and internetworked so as to curb the problems in detecting the presence of a person. The given system is a non-invasive approach in the detection of a faculty personal that will help the students 2 3. Principle of Working The heart of any system is the processing unit which controls the working of various sensors and hardware components. In this system we are using the Arduino Duemilanove as the processing unit. The Arduino Duemilanove ("2009") is a microcontroller board, based on the ATmega168 or ATmega328. Arduino is an open-source electronics prototyping platform based on flexible, easy-to-use hardware and software. 3 4. ... (Contd.) In our work, the Arduino Duemilanove microcontroller board based on the ATmega168 or ATmega328 is programmed as per our needs to perform the desired operations. The ARDUINO DUEMILANOVE Microcontroller Development Board was selected as it satisfies our requirements in addition to already being provided with the class lab kit. 4 5. Personal Detection Identification Technique The faculty presence dissemination system comprises of: a) RFID-RECEIVER, TRANSMITTER b) Arduino Duemilanove board housing the ATMEGA 328 microcontroller IC which acts as a programming and logical control and processing unit of the system c) Display Unit. 5 6. (Contd.) The RFID-Receiver receives the data sent from the RFID-Transmitter and the processing module (Arduino Duemilanove) then accordingly processes the data. On the display unit it shows the present location of a faculty person, giving the students a degree of freedom to visit their faculty person. 6 7. (Contd.) The system consists of radio frequency(RF) receivers limited in range of reception at various important places where the person has the maximum probability of occurrence. The person to be traced has a low power RF transmitter normally fitted inside his key chain or wallet or even in some ornament like Watch, Bangle, Pendant, Ear Ring etc. Once the transmitter (now person) enters into the proximity of particular receiver, the receiver receives the RF code and sends to the base station. 7 8. (Contd.) There are three modules (LAB, CLASS,CABIN) which lead to the department and on each module we have placed the proximity sensor which sense the presence of a faculty personal, their collective result is then sent to the base station. The base station then sends the result to the modules through RF link between the two. Thus the student gets the information about the presence of the faculty and accordingly they visit the particular faculty personal. 8 9. ILLUSTRATION DIAGRAM FOR PERSONNEL PRESENCE INFORMATION DISSIMINATION SYSTEM: 9 10. MODULE WISE DESIGN (a) Block diagram 10 11. BASE STATION MODULE 12. Base Station and its simulation using Multisim 13. Lab Module 14. (b) LAB module circuit and its simulation using MULTISIM 14 15. Class Module 16. (c) CLASS module circuit and its simulation using MULTISIM 16 17. COMMUNICATION MODULE For transmitting data from different modules to make use of RF Module(Transmitter & Receiver). In our project we are using two RF transmitters and four Receivers with different carrier frequencies. Both these Transmitter -Receiver pair operate on different frequencies 17 18. 18 19. WORKING OF COMMUNICATION MODULE The RF module, as the name suggests, operates at Radio Frequency. The corresponding frequency range varies between 30 kHz & 300 GHz. In this RF system, the digital data is represented as variations in the amplitude of carrier wave. This kind of modulation is known as Amplitude Shift Keying (ASK). 19 20. (contd.) Transmission through RF is better than IR (infrared) because: a) Firstly, signals through RF can travel through larger distances making it suitable for long range applications. Also, while IR mostly operates in line-of-sight mode, RF signals can travel even when there is an obstruction between transmitter & receiver. b) Next, RF transmission is more strong and reliable than IR transmission. RF communication uses a specific frequency unlike IR signals which are affected by other IR emitting sources. 20 21. (contd.) This RF module comprises of an RF Transmitter and an RF Receiver. The transmitter/receiver (TX/Rx) pair operates at a frequency of 434 MHz (Depends upon the carrier Frequency). An RF transmitter receives serial data and transmits it wirelessly through RF through its antenna connected at pin4. The transmission occurs at the rate of 1Kbps-10Kbps. The transmitted data is received by an RF receiver operating at the same frequency as that of the transmitter. 21 22. Transmitter 23. RF Transmitter Circuit 23 24. RF Receiver Circuit Diagram 24 25. PROCESSING MODULE The Processing Module of an electronic assembly is a printed circuit board which holds many of the crucial components , as the central processing unit of the system and memory, and provides connectors for other peripherals, together with thousands other custom components. The Processing Module used in our system is a microcontroller board named, Arduino Duemilanove based on ATMEGA 328 25 26. An illustration of PROCESSING MODULE 26 27. ...(contd.) In our system we use LED text display to display the information about the presence of a faculty personnel. A text display is an electronic alphanumeric display device that is mainly or only capable of showing text, or extremely limited graphic characters. There are several ways to form text for display. A segment display uses lines, while a dot-matrix display uses a grid of dots, and both of these are seen in LCD, LED, VFD, and vane/disc types. 27 28. Picture showing DISPLAY MODULE 28 29. SOFTWARE DESIGN (a)Algorithm: Step1: start Step2: get the input from receiver Step3: is receiver1 ON Step4: If YES, display IN Step5: go to step 2 to get next value Step6: if NO, is receiver 2 ON Step7: if YES, display class Step8: go to step2 to get next value Step9: if NO, is receiver3 ON Step10: if YES, display lab Step11: go to step2 to get next value Step12: if NO, display out Step13: go to step2 and again repeat the process. 29 30. (b) Flow chart: 30 31. Conclusion and scope for future work From our Project it can be concluded that full automation is required for making PERSONAAL PRESSENCE INFORMATION DISSIMINATION SYSTEM in order to take good care for the detection of a particular personal. In a country like India, where the increase in population is at its peak and economic condition is in development stage and detecting the personal at a particular time is not automated. So, the proposed project takes this problem into account and uses the existing infrastructure to full fill the criteria. 31 32. ...(contd.) In this project, the primary aim is to gather the information of the particular personal at a particular place leading to particular destination. The system we have designed is only for single person, it can be designed for many personals using different wireless technologies. 32 33. 33