internet ctrl home appliances

8/4/2019 Internet Ctrl Home Appliances

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HOME APPLIANCE CONTROL THROUGH WEB/INTERNETThe present invention relates to a remote control system for a home

appliance network and a method for operating the same. More particularly, the present invention

relates to a remote control system for a home appliance network and a method forupdating

information of the same, the system and method enabling a central portal server to manage a

plurality of home servers by allowing a home server to transmit a key message containing an IP

(Internet Protocol) address so that an existing IP address stored in a database of the central portal

server can be updated to a new IP address when the home server, using a dynamic IP, is connected

to the central portal server.

Parallel port is a simple and inexpensive tool for building computer controlled devices and projects.

The simplicity and ease of programming makes parallel port popular in electronics hobbyist world.

The parallel port is often used in computer controlled robots, Atmel/PIC programmers, home

automation,

The lines in DB25 connector are divided into three groups, they are:

Data lines (data bus)

Control lines

Status lines

As the name refers, data is transferred over data lines. Control lines are used to control the

peripheral, and of course, the peripheral returns status signals back to the computer through Status

lines. These lines are connected to Data, Control And Status registers internally.

As their names specify, Data register is connected to Data lines, Control register is connected

to Control lines and Status register is connected to Status lines. (Here the word connection

does not mean that there is some physical connection between data/control/status lines. The

registers are virtually connected to the corresponding lines.) So, whatever you write to these

registers will appear in the corresponding lines as voltages. Of course, you can measure itwith a multimeter. And whatever you give to Parallel port as voltages can be read from these

registers (with some restrictions). For example, if we write '1' to Data register, the line Data0

will be driven to +5v. Just like this, we can programmatically turn on and off any of the Data

lines and Control lines

Features

*Control lamps, appliances, and wall switches with X10 home automation

modules by PC or remote

*Set up timed events and you'll never have to walk into a dark room again

*User-friendly interface means anyone can master simple home automation


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*Wireless so you'll never have to trip over extra wiring

*ActiveHome even works when your computer is off

Figure 2 shows a block diagram of the full system.

We have switches and home appliances that are to be controlled. The embedded

hardware

is then connected to your PC via serial communication running at 9600

8-n-1 configuration. The HA server is running on the PC with any

operating system, with PC's IP configured. You can use a DNS server if

you want access all over the Web/internetand if you are using it on LAN

then you can have a fix IP within that domain. So using the telnet

command with the ip address of the server you can connect to the

server.

Figure 3 and 4 shows the schematic diagram for home automation project

as you can see, we are using LEDs to denote bulbs, tubes and Switches.

As per the program, the tubes are connected at P1.0 and P1.1; Bulbs

are connected at P1.2, P1.3 and P1.4; and switched are connected at

P1.5, P1.6 and P1.7. The LCD (16x2 LCD) is connected at P2; and three

switches which are used to read the messages i.e. P3.2 for read

message, P3.3 for next message and P3.4 for Previous Message. Because

of the lack of RAM we can only support maximum of three messages.


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Figure 3: Control, Display and PC interface section
http://www.kmitl.ac.th/~kswichit/Ajay4/circuit1.gif


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Figure 4: Appliance and Power Supply section.

Following are the commands which are used in our project.

COMMAND

DESCRIPTION

stat

To get the status of all the appliances connected to the controller.

tube

To switch ON/OFF the tubes. Selecting any one out of two.

Bulb
http://www.kmitl.ac.th/~kswichit/Ajay4/circuit2.gif


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To switch ON/OFF the bulbs, selecting any one out of the three bulbs.

swch

To switch ON/OFF the switches connected to the controller, selecting

anyone out of three switches.

internet ctrl home appliances

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