DESIGN OF ANALOG TO DIGITAL CONVERSION USING SWITCHED CAPACITOR

The Project present about converting analog signal to digital signal by switched- create control circuit by clock signal. The scheme is based on charge pump and discharge use as capacitor conservative of charge. Analog to Digital converter using successive-approximation with possitive and negative algorithm is proposed. The circuit component compose of create voltage reference , compare signal , compile have conditions , signal control and charge combination circuit. To experiment with Pspice program simulation.

By
Prawitaya Saetung
Manitaya Tungkawatchara

Analysis of the Effect of Aluminium Rectangular Waveguide

In this project, we have Analysis the efficiency of waveguide, which made from Aluminium by compared with waveguide of Microwave experimental set. Waveguide of Microwave experimental setmade from Brass and cover with Chromium inside. From properties of resistivity and conductivity , Aluminium has more resistivity than Chromium . Chromium has more conductivity than Aluminium . Both of them have approximately same properties. In this experiment , we have measured VSWR , Power and Loss of the waveguides. We foundthat they have approximately efficiency. So that, Aluminium can be another material and another choice that use to build waveguide instead of waveguide of Microwave experimental set , Because it cheaper price and lighter weight than Brass. Being faster and easier , out group had writter Program Pascal for designed and computed the waveguide.

By
Chakrakrisana Madtrawijitra
Treepojana Tubthong

Weather Recorder

This project have detail about weather data record. It consist of Temperature data, and Light data. This data with refer by Real time clock IC. All data is digital and record in the memory of hardware. The hardware can send data in memory to computer disk by serial port. That data can display in software Program on computer in linear graph form, on period day. Form data we can see the difference and calculate probability of the weather. This project consist of hardware, is control Board and software program on computer using Visual Basic 6 Program.

By
Adisorn Khemwichai
Amornkul Ammaramorn

High Efficiency Power Amplifier

This thesis propose power amplifier CLASS G circuit with property of power electronic device to reduce power loss, response frequency range 10 – 20,000 Hz and get rid of oscillatory problem.

This project studied characteristic of power amplifier CLASS G by using TOSHIBA MOSFET silicon N channel type number 2SK1530 and MOSFET silicon P Channel type number 2SJ201 to control 2 level voltage source following CLASS G rule and power amplifier have more efficiency.

This high efficiency power amplifier give power output 378 Wrms at resistant load 8 ohm and have input sensitivity 3.6 Vrms.

By

Pinan Plabcharernsuk

Alongkorna Klomjitcharern

FM Stereo Multiplex Transmitter Control by Microcontroller

This project is FM stereo multiplex control by microcontroller. It is designed for low power FM station if to require transmit long distance can be install linear amplifier.

This transmitter have good frequency stability because it use phase lock loop integrated circuit. In control section use microcontroller so to be more than application, and transmitter can be control by microcomputer.

By

Dusit Kaewruengrithi

Sucharti Sirishum

Position Control for CCD Camera

This thesis brings to submit the procedure which is tune direction in seek location at wanted by use servomotor helps tune go to left or right and help tune’s the corner stoop and the corner look up which will Control Camera CCD. In seek location at wanted. It can bring install with rail for help to take picture has area seek location at appropriate that has area largest.This circuit brings to submit. It has component that important two pieces. They are the piece of circuit and the piece of program the use control. Which the piece of circuit ,that will consisting of circuit that use control two servomotor and another DC motor which will divide in piece for will use control each piece. By each piece will has to resist adapt. It is select motion to go direction and the prescribe is fast by pass circuit ADC each piece. We use microcontroller in stock MCS-51 which microcontroller in this stock has kind. We choose to use microtroller AT89C52. It is divide work and in piece of program. We use the program ASSEMBLY. It is language that use in control work of microcontroller AT89C52.

By

Nakorn Sutthipongsapantha

Patcharee Pornpitaksanunta

Infrared Remote Door Control System

This thesis cover the designing of the automatic door controller by using the Micprocesser in MCS-51 family to increase accuracy of controller’s working.This controller be separated in 3 parts. The first is controlling signal transmitter Infrared ,which consist of 3 switches for opening, closing and stopping the door. The second in main controller, which is controlled by Microcontroller that work under ordering from the program inside and the last one is motor driver that hold the motor to turn left , turn right and stop. Nevertheless, it is also include other parts such as operation condition display and error protection device

By
Theerayuttha Suwanshon

Prasong Wongweerayuttha

Information Robot

This thesis presents about INFORMATION ROBOT project. The project has consisted two parts. The first part is hardware of INFORMATION ROBOT, We improved control robot circuit. Another one is software, We have been designed program by using language VISUAL BASIC for control the motion of robot which is correspond to a sound. The principle of robot controlling, When we entry data in our designed program. Computer will send data (sound and control signal) via sound card and sends both signals to control driver set box for drive solenoid valves of robot. The cause is the piston rod will remove position, the robot can move to conforms with sound and while the robot must got the pressure from compressor enough too.

By

Porntep Lerdchaiaphichati

Yongyuth Binhyaee

Mouse Robot

Many Kinds of Robotics have been applied to factory and military purpose. One of problem to study about controlling the robotics moving is the high-cost of machine. The small robotics such as robot mouse is the most important/ suitable machine for people who want to study /learn that how to control the robot moving. This project is designed to build small robot with 2 fundamental sensors. The example programs are also designed to guide of controlling. Further more, the machine use the wireless system that means it is very easy for training and can be applied to another kind of applications.

By

Dech Kulawongka

Athaporn Chumpongsasanti

FM Receiver RDS System

This thesis presents the RDS system designing proposed method. The receiver is also built the received data has processed by a microcontroller , which can be dispplayed on mini monitor.

By

Pichai Ngarmpring

Poontawee Sangkhajuntara

Laser Projector Used PC Control

Computer system was used in preparation of this thesis to control laser scaned before projected several characters on the blackground, that can be project the continuous word. Thus it had the most useful for promoted the goods. This projector has the small size, it can easily move to any location. This thesis made projector for projects the word by laser diode applied. It has each part that is mechanical part, 8-laser beam producted part, microcontroled part, and used program part. It can be projected 8 character per one scaned and can controled its products.

By

Phanu Katekaew

Udom Phuhongpechara

Car Anti-Theft Protection System

This project is the presentation of car anti – theft protection system designed by mean of encoding the signal from remote control in order to control electric system your car and if encode the signal incorrect. The code receiver in the car’s to order the alarm system. At the same as when encoding is incorrect. The transmitter will send off the signal to remote control. In the same time alarm system in the car’s is loudly. The remote control will receive the signal radiator within 1 km. And the system can be install the signal receiver at any position in the car when you need to increase safety.

By

Sutap Kumsombat

Soonthorn Prasomsuk

Assistant Training Program

The thesis was presented the development of assistant training program through computer, which operate through network use TCP/IP protocol which very popular now. Since the Internet use TCP/IP protocol in large network in the world. The development program by Microsoft Visual Basic which operate under Microsoft Windows 95/98 operating system through network system and communication between the computer by Winsock which use API (Application Program Interface) and communicate TCP/IP protocol by Microsoft Visual Basic that there is the objective program which can specific the object operation for driven or specify the other operation by specific order. This program can capture the trainer screen for send to destination computer to see the capture screen on monitor similar to trainer's screen which can be follow the continuous instruction effectively which not necessary to use overhead projector. Be hope to this development program will be useful for instruction and it can be develop more effectively in the future.

By

Piboonya Jaruariyanonta

Surachai Thongarunsri

Product Type Selected System

This research is offered the scanning and separating of the objects in the processing line in order to make the processing more simplified and automated, reduce human work in separating of the objects by using the Micro Controller, MCS-51 device as the processing unit through program writing with the assembly language to control it per the desire.In controlling, the machine consisted of the objects scanning and submission parts. The scanning part is presided to scan the object’s image that moves pass including to keep the object data to calculate its size. The other submission part, it can move to three desired positions resulting in this machine is able to separate totally 3 objects.

By

Charan Sukbumroong

Mahannop Suwanmanee