11-08-2012, 12:51 PM
WIRELESS SYSTEM FOR REALTIME OFFICE AUTOMATION
[attachment=31102]
INTRODUCTION
The project is aimed to automate the office environment. The Office systems are among the newest and most rapidly expanding computer based information systems. The backbone of office automation is the LAN which allows users to transmit data.
PROPOSED WORK
The project identifies the employee entering the office greets the user with his name and the login time , intimates the schedules for the day via SMS, automatically starts the computer for the employee, turns-off the monitor at the employee absence and will turn on the monitor on the employee presence. The attendance for all employees is done automatically. For the new users the photograph can be taken using web cam. All these activities mentioned have been made very simple and effective by the use of computers and Sensors.
This project takes automatic attendance for the employee and it provides RF card and
Password authentication.Once the employee reaches office an SMS is sent to his boss, home etc.The project provides facility of turning on and turning off the computer automatically.SMS the schedules for the day to the employee.Enrolling a new user to the office database.Sensing the presence of the employee and turning on or turning off the monitor.
DESIGN AND METHODOLOGY
We need to design the hardware first and then develop the software for the same. we have taken the serial port of the PC for the interface . The wireless for the chair and the system is done using the RF technology. The RFID and the necessary circuits are tested on the PCB and then the final coding for the same is done.
LITERATURE SURVEY
INTRODUCTION
This chapter includes the description of the hardware on both the server and client side The hardware on the server includes RF ID, RF reader, cell phone,PC,microcontroller 8051.The hardware on client side includes PC,RF transmitter,RF receiver and external devices(stepper motor, Tactile switch,PIR sensor).
The term “computer” conjures many images, such as desktop and laptop computers and servers stored in some highly protected remote location. And while these images accurately portray a computer, there are many more computers that lack the familiar computer shape but contain the same basic components found in desktop and laptop computers. Cell phones, digital set-top boxes for cable television, car navigation systems, pagers, and personal digital assistants are all computers. And computers are also used to control the operation of automobiles, industrial equipment, and household appliances. This new breed of computers, referred to as small computing devices, is distinguishable from more traditional computers by their reduced resource availability.
WHAT IS RADIO FREQUENCY?
Radio Frequency (RF) communications is based on laws of physics that describe the behavior of electromagnetic energy waves. For the purpose of providing a very cursory understanding of the technology this explanation will use very informal terminology to describe what is happening.
GENERAL PHYSICS OF RADIO SIGNALS.
RF communication works by creating electromagnetic waves at a source and being able to pick up those electromagnetic waves at a particular destination. These electromagnetic waves travel through the air at near the speed of light. The wavelength of an electromagnetic signal is inversely proportional to the frequency; the higher the frequency, the shorter the wavelength.
Frequency is measured in Hertz cycles per second and radio frequencies are measured in kilohertz (KHz or thousands of cycles per second), megahertz (MHz or millions of cycles per second) and gigahertz (GHz or billions of cycles per second). Higher frequencies result in shorter wavelengths. The wavelength for a 900 MHz device is longer than that of 2.4 GHz device.In general, signals with longer wavelengths travel a greater distance and penetrate through, and around objects better than signals with shorter wavelengths.
RF COMMUNICATION SYSTEM WORK
Imagine an RF transmitter wiggling an electron in one location. This wiggling electron causes a ripple effect, somewhat akin to dropping a pebble in a pond. The effect is an electromagnetic (EM) wave that travels out from the initial location resulting in electrons wiggling in remote locations. An RF receiver can detect this remote electron wiggling. The RF communication system then utilizes this phenomenon by wiggling electrons in a specific pattern to represent information. The receiver can make this same information available at a remote location; communicating with no wires.
[attachment=31102]
INTRODUCTION
The project is aimed to automate the office environment. The Office systems are among the newest and most rapidly expanding computer based information systems. The backbone of office automation is the LAN which allows users to transmit data.
PROPOSED WORK
The project identifies the employee entering the office greets the user with his name and the login time , intimates the schedules for the day via SMS, automatically starts the computer for the employee, turns-off the monitor at the employee absence and will turn on the monitor on the employee presence. The attendance for all employees is done automatically. For the new users the photograph can be taken using web cam. All these activities mentioned have been made very simple and effective by the use of computers and Sensors.
This project takes automatic attendance for the employee and it provides RF card and
Password authentication.Once the employee reaches office an SMS is sent to his boss, home etc.The project provides facility of turning on and turning off the computer automatically.SMS the schedules for the day to the employee.Enrolling a new user to the office database.Sensing the presence of the employee and turning on or turning off the monitor.
DESIGN AND METHODOLOGY
We need to design the hardware first and then develop the software for the same. we have taken the serial port of the PC for the interface . The wireless for the chair and the system is done using the RF technology. The RFID and the necessary circuits are tested on the PCB and then the final coding for the same is done.
LITERATURE SURVEY
INTRODUCTION
This chapter includes the description of the hardware on both the server and client side The hardware on the server includes RF ID, RF reader, cell phone,PC,microcontroller 8051.The hardware on client side includes PC,RF transmitter,RF receiver and external devices(stepper motor, Tactile switch,PIR sensor).
The term “computer” conjures many images, such as desktop and laptop computers and servers stored in some highly protected remote location. And while these images accurately portray a computer, there are many more computers that lack the familiar computer shape but contain the same basic components found in desktop and laptop computers. Cell phones, digital set-top boxes for cable television, car navigation systems, pagers, and personal digital assistants are all computers. And computers are also used to control the operation of automobiles, industrial equipment, and household appliances. This new breed of computers, referred to as small computing devices, is distinguishable from more traditional computers by their reduced resource availability.
WHAT IS RADIO FREQUENCY?
Radio Frequency (RF) communications is based on laws of physics that describe the behavior of electromagnetic energy waves. For the purpose of providing a very cursory understanding of the technology this explanation will use very informal terminology to describe what is happening.
GENERAL PHYSICS OF RADIO SIGNALS.
RF communication works by creating electromagnetic waves at a source and being able to pick up those electromagnetic waves at a particular destination. These electromagnetic waves travel through the air at near the speed of light. The wavelength of an electromagnetic signal is inversely proportional to the frequency; the higher the frequency, the shorter the wavelength.
Frequency is measured in Hertz cycles per second and radio frequencies are measured in kilohertz (KHz or thousands of cycles per second), megahertz (MHz or millions of cycles per second) and gigahertz (GHz or billions of cycles per second). Higher frequencies result in shorter wavelengths. The wavelength for a 900 MHz device is longer than that of 2.4 GHz device.In general, signals with longer wavelengths travel a greater distance and penetrate through, and around objects better than signals with shorter wavelengths.
RF COMMUNICATION SYSTEM WORK
Imagine an RF transmitter wiggling an electron in one location. This wiggling electron causes a ripple effect, somewhat akin to dropping a pebble in a pond. The effect is an electromagnetic (EM) wave that travels out from the initial location resulting in electrons wiggling in remote locations. An RF receiver can detect this remote electron wiggling. The RF communication system then utilizes this phenomenon by wiggling electrons in a specific pattern to represent information. The receiver can make this same information available at a remote location; communicating with no wires.