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Remotely Controlled Heating System - Assignment Example

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Summary
Technology advances in microprocessors and computer networks have opened the doors to development of thousands of embedded systems. Embedded systems are designed and engineered towards the manipulation and execution of some specific task. Embedded systems provide high performance and low cost due to their dedication to their assigned task…
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Remotely Controlled Heating System
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Remotely Controlled Heating System

Download file to see previous pages... The home PC is located inside the house and is also connected to all room temperature devices through a wireless network. The PC send read or set messages to the temperature sensors as to read or set the temperature of any room.
The home PC must be able to connect to each room temperature device. A network media and protocol must be established to ensure the efficiency and reliability of such connection. The PC application program must be able to access database values of required temperatures and current temperatures and must be able to send the correct commands to increase/decrease temperature as required.
The home PC must be able to receive and send messages to the mobile phone or PDA. The PC must have a static address for the client hardware to contact when needed. Messages from the mobile network protocol must be translated to the TCP/IP internet protocol as to ensure successful transmission and reception of requests.
Two server application programs are loaded and run on the server PC every time the server operating system is fired up. The first server application is responsible for communication with the client. ...
The switch is connected to a DSL router that connects the wireless home network to the Internet.
The server PC operates a Windows XP operating system.
Two server application programs are loaded and run on the server PC every time the server operating system is fired up. The first server application is responsible for communication with the client. The second server application is responsible for communication with room temperature sensors.
A database is created, maintained and run on the server PC every time it starts. The database contains the passwords to allow access to the heating system. The database contains all the preset schedules the user has selected to be run during different times of the day.
The first server program takes care of communication with clients. It listens to client messages on a selected TCP port. Once a message is received from the client on the selected TCP port, the message is decoded.
1. The message is decoded to extract the following information password, type of message, selected room, and required temperature to be set if it is a an order message.
2. The privilege to access the server is checked by comparing the password decoded from the message against all stored passwords retrieved from the database.
3. The type of message is next determined.
4. If it is a read message, the database is queried to retrieve current selected room temperature.
5. If it is a change temperature order, the database is accessed to change the goal temperature of the selected room.
2. The second application program is used to communicate with room temperature sensors. It polls the sensor of each room using wireless communication and save the read temperature in the database. It also queries ...Download file to see next pagesRead More
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