GSM based smart information system for lost cards

[navneeta]

How to make GSM  based inform ation system for lost cards?

[nikhiljain]

The basics of GSm are vry well given in the site. Pls learn from there and then describe your project as to what you want to make.

[navneeta]

The main aim of this project is to prevent forced ATM theft, using GSM technology.Consider a
scenario when you enter into an ATM to withdraw money for your need, and suddenly a thief
enters into the ATM with a knife or a pistol, and force you to withdraw the entire amount in
your account (considering the ATM has no security guard and is in a remote place). What you
can do? You can either fight with the thief or can give all the money to him.
Just think of an implementation which is helpful in this situation as, when you are forcibly
attempting to withdraw money, and you are entering a code number instead of your actual pin
code, and the ATM shows that you have no balance in your account (even if you have plenty).
And also imagine that as the thief tries to get out of the ATM, he will come to know that the
ATM is surrounded by armed police and there is no way to escape.
This can be done by just entering a code instead of the actual password.

[Adeeb]

Why GSM, it is better to implement this in bank, any way ATM is connected to their servers…

 

[Adeeb]

 

 

[Syed Aameer]

yes Adeeb is right.. i have heard that if u entered your password number in reverse order there will be an intimation for the bank that you are in trouble and your ATM card will be blocked immediately.. i am not sure but  i have heard from my friend

[arun kumar yadav]

hiiiii…..

i made a c code to send a msg through gsm module. but i did not get desired result. plz check the code and help…

 

#include<reg51.h>
#define FREQ 12000000
#define baud 9600
#define spbrg_value (((FREQ/64)/baud)-1)

sbit gas=P2^0;
sbit pir=P2^1;
sbit fire=P2^2;

int i=0,j,k,temp;
unsigned char *sms_service=”AT+CSMS=1″;
unsigned char *sms_format=”AT+CMGF=1″;
unsigned char *sms_write=”AT+CMGS=”7520487033″”;  // 10-Digit Mobile Number
unsigned char *sms=”gas leakage”;
unsigned char *smss=”moving body”;
unsigned char *smsss=”fire”;
unsigned char *sms_report=”SMS Sent…”;
unsigned char sms_terminate=0x1A;
unsigned char enter=0x0D;

void delay(unsigned int msec)        // Function for delay
{
    int i,j;
    for(i=0;i<msec;i++)
        for(j=0; j<1275; j++);
}

void init_serial()            // Initialize serial port
{
    TMOD=0x20;            // Mode2
    TH1=0xFD;            //buad rate
    SCON=0x50;            // Serial mode=1 ,8-Bit data,1 Stop bit ,1 Start bit, Receiving on
    TR1=1;                // Start timer
}

void tx_data(unsigned char str)        // Transmit data function
{
    SBUF=str;                  //Store data in SBUF
    while(TI==0);                 //Wait till data transmits
    TI=0;
}

void gsm_cmd(unsigned char *string)
{
    i=0;j=0;
    while(string!=’’)
    {
        temp=0;
        if(string==0x5C)        // Not to send ” cahracter
        i++;
        tx_data(string);        // Send by serial communication
        i++;
        while(temp!=1);
    }
    temp=0;
    tx_data(enter);                // Send ASCII code for ‘Enter’ key
    while(temp!=1);
}

void main()
{
    P2=0xFF;
    P2=0x00;
    init_serial();
    while(1)
    {
    
        if(gas==1)
        {
           gsm_cmd(sms_service);
            gsm_cmd(sms_format);
            delay(1000);
gsm_cmd(sms_write);
            delay(1000);
gsm_cmd(sms);
            tx_data(0x1A);
            delay(1000);
        }
        else if(pir==1)
        {
        gsm_cmd(sms_service);
            gsm_cmd(sms_format);
            delay(1000);
gsm_cmd(sms_write);
            delay(1000);
gsm_cmd(smss);
            tx_data(0x1A);
            delay(1000);
        }

        else if(fire==1)
        {
        gsm_cmd(sms_service);
            gsm_cmd(sms_format);
            delay(1000);
gsm_cmd(sms_write);
            delay(1000);
gsm_cmd(smsss);
            tx_data(0x1A);
            delay(1000);
        }

}
}

[Syed Aameer]

Hello Arun,

 

               gsm_cmd(sms);     //here you are giving  Enter value(That is not required)
            tx_data(0x1A);       //this is necessary
         

 

 

After typing message give only CTRL Z (0x1A) no need of Enter value(0x0D)

 

i didnt understand what is   “AT+CSMS=1”;

 

you can give

AT  <enter>

   AT+CMGF=1   <enter>

AT+CMGS=”xxxxxxxxx”   <enter>

Type a message then <CTRL+Z>
       

[MUTHU KUMAR GANESAN]

Hi Arun Kumar,

 

I executed your C code to interface with GSM module from 8051 and found theres is something wrong in that. Then I removed the code in while loolp (temp!=1) and it started working.

 

Thanks for your help.

 

Note: Please correct my if I’m wrong.

 

Thanks,

GMK.
 

[Ashish Chakole]

 

 Hello Sayeed n friends,

 

i did same thing, i removed      temp=0; and while(temp!=1); both  and the problem was solved. the previous program used to stuck at while(temp!=1); but after removal, its working properly,

 

but still i hav doubt whethr program will work with the hardware,……

 

Also , Sayeed u hav sugested some corrections in Arun Kumar’s program but i dint get it properly, i mean i m too weak to undrstnd the Syntax of the program…. Would u plz post the complete program with the given corrections??? 

 

plz plz plz,,,,,, its realy urgent….

 

 

Thnx

[Ashish Chakole]

 

 

Hello Mr Arun,

 

are u ok with the program after making corrections by Sayeed?

if yes then plz forward me the corrected program plz plz……

 

its very urgent…….

[Author]

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