Thread Rating:
  • 0 Vote(s) - 0 Average
  • 1
  • 2
  • 3
  • 4
  • 5
gsm based electricity meter billing ieee paper
#1

This GSM technology is used for many applications like process control, security system, remote applications etc .Among this we are making a project on machine process control using this GSM modem. GSM modem is a device, which has all the protocol of GSM standards embedded into a micro controller and this function are controlled by standard AT commands of GSM technology .In this project we use an 89c51 micro controller, which belongs to the Intel 8051 family Architecture. This particular micro controller is wired to GSM modem through the serial RS 232 UART, relays for controlling the Gate, input drivers to connect accessories as shown in the block diagram.
The GSM with micro controller will be wired to the machine. GSM device will analyse according to what we have programmed and then it sends to the micro controller. The micro-controller will check this command in the database and then sends the required SMS to the owner by connecting to the GSM modem connected to the micro controller. Or even it makes a call to the required person. If the person sends any SMS to the particular mobile the micro controller will receive it and then process according to the command. The main features of this project are that one relay can be made switch off and on a particular date and time. E.g. If we send the SMS switch off the gate , The SMS is sent through the network to GSM module. The GSM module will receive this SMS and the GSM modem will intimate the micro controller that it has received a message .The micro controller will send a request command to the modem to send the message with the sender phone number. The micro controller will receive this data and first verify the phone number with master (owner) phone number. If it matches then it will compare the SMS with the stored SMS in the database. When any of the SMS matches then will see what function has to be carried out, once this SMS is received .If the function is to switch off the machine then it will switch of the machine.

AT COMMANDS :--
The Telit wireless module family can be controlled via the serial interface using the standard AT commands. The AT is an ATTENTION command and is used as a prefix to other parameters in a string. The AT command combined with other parameters can be set up in the communications package or typed in manually as a command line instruction. combined with other parameters can be set up in the communications package or typed in manually as a command line instruction. The Telit wireless module family is compliant with:

1. Hayes standard AT command set, in order to maintain the compatibility with existing SW programs.

2. 3GPP TS 27.007 specific AT command and GPRS specific commands.

3. 3GPP TS 27.005 specific AT commands for SMS (Short Message Service) and CBS
(Cell Broadcast Service)

4. FAX Class 1 compatible commands
Moreover Telit wireless module family supports also Telit proprietary AT commands for special purposes.

The following is a description of how to use the AT commands with the Telit wireless module family.

DEFINATIONS:--

The following syntactical definitions apply:

<CR> Carriage return character, is the command line and result code terminator character, which value, in decimal ASCII between 0 and 255,is specified within parameter S3. The default value is 13.
<LF> Linefeed character, is the character recognised as line feed character. Its value, in decimal ASCII between 0 and 255, is specified within parameter S4. The default value is 10. The line feed character is output after carriage return character if verbose result codes are used (V1 option used ) otherwise, if numeric format result codes are used (V0 option used) it will not appear in the result codes.
<..> Name enclosed in angle brackets is a syntactical element. They do not appear inThis GSM technology is used for many applications like process control, security system, remote applications etc .Among this we are making a project on machine process control using this GSM modem. GSM modem is a device, which has all the protocol of GSM standards embedded into a micro controller and this function are controlled by standard AT commands of GSM technology .In this project we use an 89c51 micro controller, which belongs to the Intel 8051 family Architecture. This particular micro controller is wired to GSM modem through the serial RS 232 UART, relays for controlling the Gate, input drivers to connect accessories as shown in the block diagram.
The GSM with micro controller will be wired to the machine. GSM device will analyse according to what we have programmed and then it sends to the micro controller. The micro-controller will check this command in the database and then sends the required SMS to the owner by connecting to the GSM modem connected to the micro controller. Or even it makes a call to the required person. If the person sends any SMS to the particular mobile the micro controller will receive it and then process according to the command. The main features of this project are that one relay can be made switch off and on a particular date and time. E.g. If we send the SMS switch off the gate , The SMS is sent through the network to GSM module. The GSM module will receive this SMS and the GSM modem will intimate the micro controller that it has received a message .The micro controller will send a request command to the modem to send the message with the sender phone number. The micro controller will receive this data and first verify the phone number with master (owner) phone number. If it matches then it will compare the SMS with the stored SMS in the database. When any of the SMS matches then will see what function has to be carried out, once this SMS is received .If the function is to switch off the machine then it will switch of the machine.

AT COMMANDS :--
The Telit wireless module family can be controlled via the serial interface using the standard AT commands. The AT is an ATTENTION command and is used as a prefix to other parameters in a string. The AT command combined with other parameters can be set up in the communications package or typed in manually as a command line instruction. combined with other parameters can be set up in the communications package or typed in manually as a command line instruction. The Telit wireless module family is compliant with:

1. Hayes standard AT command set, in order to maintain the compatibility with existing SW programs.

2. 3GPP TS 27.007 specific AT command and GPRS specific commands.

3. 3GPP TS 27.005 specific AT commands for SMS (Short Message Service) and CBS
(Cell Broadcast Service)

4. FAX Class 1 compatible commands
Moreover Telit wireless module family supports also Telit proprietary AT commands for special purposes.

The following is a description of how to use the AT commands with the Telit wireless module family.

DEFINATIONS:--

The following syntactical definitions apply:

<CR> Carriage return character, is the command line and result code terminator character, which value, in decimal ASCII between 0 and 255,is specified within parameter S3. The default value is 13.
<LF> Linefeed character, is the character recognised as line feed character. Its value, in decimal ASCII between 0 and 255, is specified within parameter S4. The default value is 10. The line feed character is output after carriage return character if verbose result codes are used (V1 option used ) otherwise, if numeric format result codes are used (V0 option used) it will not appear in the result codes.
<..> Name enclosed in angle brackets is a syntactical element. They do not appear in
Reply



Forum Jump:


Users browsing this thread:
1 Guest(s)

Powered By MyBB, © 2002-2024 iAndrew & Melroy van den Berg.