Assignment onExpert System

uses of its ApplicationSubmitted to (Sir Inam Ul Haq )

Submitted By:

Faizan Butt 1043

Zohaib Abbas 1006

BS (Hons.) I.T Morning

DefinitionExampleApplicationExplanation of Application

Expert SystemExpert system is a computer system that emulates the decision making ability of a human expert. Expert systems are designed to solve complex problems by reasoning about knowledge. The first expert systems were created in the 1970s and then proliferated in the 1980s. Expert systems were among the first truly successful forms of Artificial Intelligence software.

Examples: Automatic Attendance systemThumb Scanning system Medical Expert systems MYCINAutomatic Door open and close

system

Automatic Attendance system

There are many systems used for automatic

attendance like Card scanner, Thumb

scanner and RFID. I will discuss RFID.

RFID:RFID (Radio Frequency Identification)

It is a basic software/system that is used for automatic attendance in school,

colleges and universities etc.

Working of RFID:Basic

diagram

Basic components of RFID

RFID ReaderRFID cardsMicrocontrollerKeypadBuzzerLiquid Crystal Display

RFID Reader

When RFID tag comes in the range of Reader module, then RFID reader detects RFID card. And at that time RFID reader sends out a series of alphanumeric/binary unique codes on the serial port. So while adding the employees/student card number in the program memory. First we need to store this series of alphanumeric code into program memory and later on this unique series of codes will be compared with the incoming card number and show output.

RFID Cards

We use normal RFID cards which are of the size of credit card. These are rectangular in shape and white in color and can be attached with the ID-card. Or even we can use RFID tags which can be attached with keychain.

Microcontroller: It is the heart of the system. Microcontroller communicates with all input and output devices. Various functions of microcontroller are as follows:

1. Displaying clock on LCD

2. Reading input from RFID reader

3. Comparing it with the data

4. Turning on buzzer if the cards does not match

5. Logging/Storing time into memory if cards match

6. Reading input from keypad and adjusting time

according to the keypad entry given by user.

7. Sending data to computer.

Keypad:

We use 4 by 1 keypad. It is a simple type of keypad. It gives low output to microcontroller when key is pressed. It has 4 keys. Functions of these keys are Increment, decrement, Enter and Escape. These are used in Time setting mode.

Buzzer:

It is basically a bell. We use 12 volt buzzer for demonstration purpose. Buzzer will be turned on for invalid card access.

Liquid Crystal Display

It is used to show current time and various messages. These messages are Invalid card, Valid card, attendance of student. We use 16 by 2 alphanumeric display.

References

http://en.wikipedia.org/wiki/Expert_system

http://www.powershow.com/view/1d25ef-NWE0N/RFID_powerpoint_ppt_presentation

http://www.ipcas.com/products/image/rfid-ethernet-terminal.html

http://www.aspensystems.in/rfid-attendance-system.htm

http://www.youtube.com/watch?v=bkknuGLrfRM

http://www.youtube.com/watch?v=vHWWXR2ck94