SEMINAR TOPICS FOR ECE STUDENTS

1. Nantenna
2. Silent Sound Technology
3. Refraction
4. Blue Brain
5. Zoom FFT
6. Green droid
7. Electronic Cotton
8. Digital Jewlry
9. ATM with an EYE
10. Thundebolt Interface
11. Flourescence Imaging
12. Finfet
13. Highs Bosson  Particle
14. Intelligent Transport System
15. 3D Trigate transiaitors
16. Cellonics
17. Tele-graffiti
18. Audio Spot Lighting
19. Li-Fi Technology
20. GI-FI

MODULATION AND CLASSIFICATION

Modulation is the very important technique used in communication system. The purpose of modulation system is to deliver a message signal from an information source in recognizable form to a user destination. For this the transmitter modifies the message signal into a suitable for transmission over the channel. This modification is achieved by means of a precise called "modulation". The modulation involves varying some parameter of a carrier wave in accordance with the message signal. The carrier is the high frequency wave than the message signal. The receiver recreate the original signal from the modulated signal. The recreation is done by the process called "demodulation". It is the reverse process of modulation.


 Classification of Modulation

 
.In continuous modulation , a sinusoidal wave is the carrier.
 .AM- When the amplitude of the carrier wave is change in accordance with the message signal , it is called amplitude modulation.
 .FM- The instantaneous frequency of the the carrier is change in accordance with the amplitude of the message signal.
 .AM- The angle of the carrier is change in accordance with the carrier.
 .PM- The phase of the carrier is change in accordance with the amplitude of the message signal.
 .Angle Modulation- The angle of the carrier is change in accordance with the carrier. In pulse modulation , the carrier is the periodic sequence of rectangular pulses.
 .PAM-In which carrier signal is sampled at regular intervals and each the signal is made proportional to the amplitude of the amplitude of the message signal.
 .PWM- It is also called pulse duration modulation or pulse length modulation. In this the width of each pulse is made proportional to the amplitude of the signal at the instant.
 .PPM- The amplitude and width of the pulse is kept constant and the position of the each pulse is varied in accordacne with modulating signal.

TTL/CMOS, RS232 LOGIC CONVERTER

This s a simple TTL/CMOS . RS232 logic converter. That is it convert TTL/CMOS to RS232 as RS232 to TTL/CMOS logic. It is used t synchronous PIC microcontroller with USART. TTL is -5 t +5V and RS232 is -30 t +30. MAX232 is a dual/receiver. It include capacitive voltage generator to make RS232 logic level from a 5V supply.Each receiver in the MAX232 convert RS232 input into TTL/CMOS(5V). As each driver in the MAX232 convert TTL/CMS input into RS232 logic level. The four capacitors used for this conversion.

ATMOSPHERIC MEASUREMENTS USING WIRELESS ROBOT

The AMWR was designed for application in inaccessible places, or in inhospitable situations for humans. A full scale version of AMWR could be used for many real world applications such as military reconnaissance, extreme condition (environment) vehicles, or in artificial intelligence robotics. Another application could be in schools, colleges, and universities interested in experimentation and development of robots. AMWR, the remotely controlled robot, has several key components.

 This robot consists of a PIC 16F877A microcontroller interfaced with the motor controls of a DC gear motor. This microcontroller is responsible for decoding the correct control signals when given a control byte, and sending these control signals to the motor controls. In addition, to these two sensors are also connected to the microcontroller. These sensors are placed to measure temperature and humidity. Remote communication to the AMWR is accomplished using zigbee. The remote control module using zigbee is connected to a pc using a serial cable (RS-232) at baud rate 9600.In order to provide feedback from the robot; an android mobile phone camera is attached to the robot. A 2.4 GHz wireless link provided, along with the camera used to communicate with the controlling PC. PLC software running on the controlling computer is responsible for converting instruction given by a user into a byte code, and sending it to the zigbee module via db9 serial port of the PC.

The major objectives of the robot are embedded control of a robot, atmospheric condition measurements, zigbee based communication, live video feedback, and PC-based direction. Zigbee can penetrate walls and be used in places where a wired network is either not suitable or cannot be established. The advances in the wireless technology have made it possible to establish a network just by placing the communicating nodes at the required places and switching on the transmitters in them. It is possible to have great transfer rates even at long ranges. With such usefulness and many more features, a wireless network is the surely needed in places where it is not possible to establish a network using wires. Also, in case of cave-ins, or an explosion the wire may get damaged making the entire network useless.