Showing posts with label ECE PROJECT ABSTRACTS. Show all posts
Showing posts with label ECE PROJECT ABSTRACTS. Show all posts

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Fridge door Alarm

Beeps if you leave open the door over 20 seconds

3V battery operation, simple circuitry

 http://lh5.ggpht.com/_FdGFE8NBDgc/S5imO7wds3I/AAAAAAAACIE/_UxCwB2E-k0/s1024/fridge-door-open-alarm-complete.jpg

 

Circuit diagram:
Fridge alarm circuit diagram

Parts:

R1____________10K   1/4W Resistor
R2___________Photo resistor (any type)
R3,R4________100K   1/4W Resistors

C1____________10nF  63V Polyester Capacitor
C2___________100µF  25V Electrolytic Capacitor

D1,D2_______1N4148  75V 150mA Diodes

IC1___________4060  14 stage ripple counter and oscillator IC

Q1___________BC337  45V 800mA NPN Transistor

BZ1__________Piezo sounder (incorporating 3KHz oscillator)

SW1__________Miniature SPST slide Switch

B1___________3V Battery (2 AA 1.5V Cells in series)

Circuit operation:

This circuit, enclosed into a small box, is placed in the fridge near the lamp (if any) or the opening. With the door closed the interior of the fridge is in the dark, the photo resistor R2 presents a high resistance (>200K) thus clamping IC1 by holding pin 12 high. When a beam of light enters from the opening, or the fridge lamp illuminates, the photo resistor lowers its resistance (<2K), pin 12 goes low, IC1 starts counting and, after a preset delay (20 seconds in this case) the piezo sounder beeps for 20 sec. then stops for the same lapse of time and the cycle repeats until the fridge door closes. D2 connected to pin 6 of IC1 allows the piezo sounder beeping 3 times per second.

Finger Print Based Voting System for Rigging Free Governance


Finger Print Based Voting System for Rigging Free
Governance
Title of the project: Finger Print Based Voting System for Rigging free governing System
Domain: Biometrics & Embedded Design
Software: Embedded C, Keil, Proload
Microcontroller: AT89S52
Power Supply: +5V, 500mA Regulated Power Supply
Display: LED 5mm, 16 X 2 LCD
Crystal: 11.0592MHz
Biometric Sensor: FIM3030N
Storage Capacity: Up to 100 finger print images
Image Registration: Through Serial Communication
Applications: Industries, Banks, Office, Library, colleges

ABSTRACT
According ancient Greek scripts BIOMETRICS means study of life.Biometrics studies commonly include fingerprint, face, iris, voice, signature, and hand geometry recognition and verification. Many other modalities are in various stages of development and assessment. Among these available biometric traits Finger Print proves to be one of the best traits providing good mismatch ratio and also reliable. Registering the attendances of students has become a hectic work as sometimes their attendance may be registered or missed. To overcome this problem i.e. to get the attendances registered perfectly we are taking the help of two different technologies viz. EMBEDDED SYSTEMS and BIOMETRICS.
Firstly discussing about Biometrics we are concentrating on Fingerprint scanning. For this we are using FIM 3030N high voltage module as a scanner.
This module has in-built ROM, DSP and RAM. In this we can store up to 100 user’s fingerprints. This module can operate in 2 modes they are Master mode and User mode. We will be using Master mode to register the fingerprints which will be stored in the ROM present on the scanner with a unique id.
When this module is interfaced to the microcontroller, we will be using it in user mode. In this mode we will be verifying the scanned images with the stored images. When coming to our application the images of the citizens will be stored in the module with a unique id. To poll their vote the citizens have to scan their image which is then verified with the image present in fingerprint module and their vote will be updated.
This scanner is interfaced to 8051 microcontroller through max232 enabling serial communication. By using this controller we will be controlling the scanning process. After the scanning has been completed the result is stored in the microcontroller. By simply pressing a switch we can get the details of the polling.
This project uses regulated 5V, 500mA power supply. 7805 three terminal voltage regulator is used for voltage regulation. Bridge type full wave rectifier is used to rectify the ac out put of secondary of 230/12V step down transformer

Advantages:
No manual errors
No false Voting
Need not remember any password
Need not to carry any card
Scopes for Advancements:
 GSM modem can be connected to this unit to communicate to remote reporting office
 RTC can be interfaced to record login and logout time.
Applications
 Government Elections
 Company / Corporate internal elections
 Union Elections

microprocessor µcontroller projects of eee,ece


89C51 Based PC Based Industrial Automation with auto/manual modes of Operation

Title of the project: 89C51 Based PC Based Industrial Automation
Domain: PC Based Projects and Embedded
Software: Assembly Language
Relay: 5V, 100Ω SPDT
Power Supply: +5V, 500mA Regulated Power Supply
Display: LED, PC Screen
LED: 5mm White-in-Red, 5mm White-in-Blue
Input: Computer Key Board
Tool: Hyper Terminal
ABSTRACT

One of the 8051s many powerful features is its integrated UART, otherwise known as a serial port. The fact that the 8051 has an integrated serial port means that you may very easily read and write values to the serial port. If it were not for the integrated serial port, writing a byte to a serial line would be a rather tedious process requiring turning on and off one of the I/O lines in rapid succession to properly "clock out" each individual bit, including start bits, stop bits, and parity bits.
However, we do not have to do this. Instead, we simply need to configure the serial ports operation mode and baud rate. Once configured, all we have to do is write to an SFR to write a value to the serial port or read the same SFR to read a value from the serial port. The 8051 will automatically let us know when it has finished sending the character we wrote and will let us know whenever it has received a byte so that we can process it. We do not have to worry about transmission at the bit level--which saves us quite a bit of coding and processing time.
By using this project one can control his various electrical appliances by means of PC using PC’s hyper terminal window. The speed of a fan also can be varied depending on the user’s requirement. LED Indication is provided on the Kit for on/off condition of appliances and fan speed indication.
This project is best suitable for homes, hotels and showrooms to control all the electrical appliances and fan speed from a centralized point. This project uses regulated 5V power supply.