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gsm controlled door lock suggestions

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moonstar

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gsm door lock

hello!im asking for your suggestion about this topic"gsm controlled door lock", yes,its already existing and i want to seek opinion for some upgrade?/modification?or developments for this topic for my thesis. thanks in advance!:?:
 

cell phone controlled door latch

post the already existing one so that suggestion of upgrade can be made. any way you can use dtmf chip to decode tones of keys pressed from transmitter phone from any where in d world checking if it's correct sequence then operates a relay in your case open/ close door.
 

gsm operated lock

what i only got is this..

GSM CONTROLLED DOOR LATCH OPENER WITH SECURITY AUTODIAL-UP
THE SAID PROJECT IS DESIGNED ON THE DTMF DECODING.OUR MODERN TELEPHONE AND EVEN OUR MOBILE PHONE USES DTMF CODING FOR NUMBER DIALING. THESE DTMF CODES CAN BE DECODED AND UTILISED FOR USEFUL PURPOSES. THE CIRCUIT UTILISES IC8870 FOR DTMF DECODING . MICROCONTROLLER 89C51 READS THESE CODES AND TAKES THE NECESSARY ACTION. DOOR LATCH CAN BE OPENED BY ENTERING THE CORRECT PASSWORD , YOU CAN ALSO CONNECT SECURITY SENSORS OF YOUR CHOICE ,IN CASE OF ANY BREACH OF SECURITY TAKES PLACE , THE DEVICE WILL DIAL OUT THE PRESTORED NUMBER AND DELIVERS AN EMERGENCY MESSAGE.
CIRCUIT DESCRIPTION: TELEPHONE LINE IS CONNECTED AT CONNECTOR K1. WHENEVER SOMEONE CALLS THIS NUMBER, THAT TIME TELEPHONE LINE CARRIES ABOUT 70V RINGING SIGNAL SIGNAL IS RECTIFIED BY THE BRIDGE D5-D8 AND FILTERED BY C4, R20, AND D9 AND DRIVES AN OPTO COUPLER IC U8 MCT2E . COLLECTOR OF THE OPTOCOUPLER WILL GO LOW WHENEVER BELL RINGS. SINCE THE COLLECTOR IS CONNECTED TO P2.7 OF MICROCONTROLLER 89C51. NUMBER OF TIMES IT GOES LOW IS COUNTED BY MICROCONTROLLER. AFTER SIX TO EIGHT RINGS,P1.0 WILL GO HIGH AND SWITCH ON TRANSISTER T4 AND ENERGISE THE OFF HOOK RELAY RL1 . THE CONTECTS OF RELAY RL 1 WILL BECOME CLOSED AND THE TELEPHONE LINE WILL GET CONNECTED TO DTMF DECODER IC 8870, THROUGH C7 AND C8. RESISTANCE R8 COMES ACROSS THE TELEPHONE LINE AND THAT LOWERS THE VOLTAGE,AND THIS ULTIMATELY SENDS MESSAGES TO EXCHANGE THE USER HAS LIFTED THE HAND SET. AT THE SAME TIME ,MICROCONTROLLER PIN P3.5 WILL TRIGGER THE VOICE IC API8208 WHERE ALL THE MESSAGES ARE STORED. CALLER WILL GET THE MESSAGE”PLEASE INTER THE PASSWARD”THE DEFAULT PASSWORD IS 1-2-3-4-5-6. WHEN CALLER ENTERS THIS 6 DIGIT PASSWORD. IC 8870 DECODES THESE NUMBERS AND BINARY NUMEBRS ARE AVAILABLE AT Q1 TO Q4 ,PIN NO 11-14 OF DTMF DECODER WHENEVER NEW CODE COMES PIN NO 15( STB) OF DTMF DECODER WILL PULSE LOW, AND IS CONNECTED TO P1.1 INFORMING MICROCONTROLLER THAT CODES ARE AVAILABLE PLEASE TAKE THEM . MICROCONTROLLER WILL READS THESE CODES ONE BY ONE, THROUGH ITS LINE P1.2-P1.5. IF THE CODES MATCHES WITH THE CODES INSIDE THE MICROCONTROLLER, MICROCONTROLLER WILL SWITCH ON THE ELECTRO MAGNETIC OPERATED LATCH FOR 10 SECONDS AND USER CAN ENTER THE APARTMENT . IF THE PASSWARD ENTERED IS NOT CORRECT. MICROCONTROLLER WILL DISCONNECT THE TELEPHONE LINE WITHOUT ANY REPLY, BY MAKING P1.0 LOW.
1. IF THE PASSWORD ENTERED IS CORRECT. YOU CAN ALSO CHANGE THE PASSWORD STORED. THIS PASSWORD STORED GOES INTO SERIAL EPROM IC 9346 THAT IS NON VOLATILE RAM IN CASE POWER FAILS THE PASSWORD IS NOT LOST
IF YOU WANT TO CHANGE THE PASSWORD FOLLOW THESE STEPS
DIAL THIS NUMBER FROM OTHER LINE AFTER SIX TO EIGHT BELLS YOU WILL RECEIVE MESSAGE ” PLEASE ENTER YOUR PASSWORD”. (1,2,3,4,5,6 and #)SO YOU ENTER YOUR PASSWORD AND WAIT FOR THE MESSAGE IF YOU ENTER 2 THEN DEVICE WILL RESPOND PLEASE ENTER NEW PASSWORD WHEN YOUR PASSWORD ENTRY IS OVER PRESS # AFTER PASSOWRD ENTRY INDICATE THAT YOUR ENTRY IS OVER AND MICROCONTROLLER WILL RESPOND “YOUR PASSWORD HAS BEEN CHANGED’’ KEEP THE HENDSET BACK ON THE INSTRUMENT FROM WHERE YOU ARE CALLING.NEXT TIME WHEN YOU DIAL ,YOU WILL HAVE TO ENTER YOUR NEW PASSWORD.
SIMILARLY YOU CAN ALSO CHANGE THE TELEPHONE NUMBER.
IC U7 4047 ACTS LIKE WATCHDOG AS LONG COMMUNICATION IS GOING ON IT DOES NOTHING THE MOVEMENT COMMUNICATION IS OVER ITS OUT PUT AT PIN NO 10 CONNECTED TO PIN P3.2-INT0 WILL INTERRUPT THE PROCESSOR AND PROCESSOR WILL MAKE THE P1.0 LOW AND DISCONNECTING TELEPHONE LINE .THE TIME TO SWITCH OFF THE OFF- HOOK RELAY IS DECIDED BY C6 AND R19 CONNECTED TO IC 4047.TRANSISTER T1 AND T2 DRIVES THE LED D12 TO GIVE VISUAL INDICATION OF COMMUNICATION. TRANSFORMER TR1 IS 1:1 TRANSFORMER (160 OHM) PROVIDES ISOLATION BETWEEN TELEPHONE LINE AND SPEECH CIRCUIT.

its from the net.this is what i only got, my prof told me to find developments or upgrade this topic as our thesis proposal..javascript:emoticon(':cry:')
 

gsm controlled door latch

nice
 

gsm lock

moonstar said:
what i only got is this..

GSM CONTROLLED DOOR LATCH OPENER WITH SECURITY AUTODIAL-UP
THE SAID PROJECT IS DESIGNED ON THE DTMF DECODING.OUR MODERN TELEPHONE AND EVEN OUR MOBILE PHONE USES DTMF CODING FOR NUMBER DIALING. THESE DTMF CODES CAN BE DECODED AND UTILISED FOR USEFUL PURPOSES. THE CIRCUIT UTILISES IC8870 FOR DTMF DECODING . MICROCONTROLLER 89C51 READS THESE CODES AND TAKES THE NECESSARY ACTION. DOOR LATCH CAN BE OPENED BY ENTERING THE CORRECT PASSWORD , YOU CAN ALSO CONNECT SECURITY SENSORS OF YOUR CHOICE ,IN CASE OF ANY BREACH OF SECURITY TAKES PLACE , THE DEVICE WILL DIAL OUT THE PRESTORED NUMBER AND DELIVERS AN EMERGENCY MESSAGE.
CIRCUIT DESCRIPTION: TELEPHONE LINE IS CONNECTED AT CONNECTOR K1. WHENEVER SOMEONE CALLS THIS NUMBER, THAT TIME TELEPHONE LINE CARRIES ABOUT 70V RINGING SIGNAL SIGNAL IS RECTIFIED BY THE BRIDGE D5-D8 AND FILTERED BY C4, R20, AND D9 AND DRIVES AN OPTO COUPLER IC U8 MCT2E . COLLECTOR OF THE OPTOCOUPLER WILL GO LOW WHENEVER BELL RINGS. SINCE THE COLLECTOR IS CONNECTED TO P2.7 OF MICROCONTROLLER 89C51. NUMBER OF TIMES IT GOES LOW IS COUNTED BY MICROCONTROLLER. AFTER SIX TO EIGHT RINGS,P1.0 WILL GO HIGH AND SWITCH ON TRANSISTER T4 AND ENERGISE THE OFF HOOK RELAY RL1 . THE CONTECTS OF RELAY RL 1 WILL BECOME CLOSED AND THE TELEPHONE LINE WILL GET CONNECTED TO DTMF DECODER IC 8870, THROUGH C7 AND C8. RESISTANCE R8 COMES ACROSS THE TELEPHONE LINE AND THAT LOWERS THE VOLTAGE,AND THIS ULTIMATELY SENDS MESSAGES TO EXCHANGE THE USER HAS LIFTED THE HAND SET. AT THE SAME TIME ,MICROCONTROLLER PIN P3.5 WILL TRIGGER THE VOICE IC API8208 WHERE ALL THE MESSAGES ARE STORED. CALLER WILL GET THE MESSAGE”PLEASE INTER THE PASSWARD”THE DEFAULT PASSWORD IS 1-2-3-4-5-6. WHEN CALLER ENTERS THIS 6 DIGIT PASSWORD. IC 8870 DECODES THESE NUMBERS AND BINARY NUMEBRS ARE AVAILABLE AT Q1 TO Q4 ,PIN NO 11-14 OF DTMF DECODER WHENEVER NEW CODE COMES PIN NO 15( STB) OF DTMF DECODER WILL PULSE LOW, AND IS CONNECTED TO P1.1 INFORMING MICROCONTROLLER THAT CODES ARE AVAILABLE PLEASE TAKE THEM . MICROCONTROLLER WILL READS THESE CODES ONE BY ONE, THROUGH ITS LINE P1.2-P1.5. IF THE CODES MATCHES WITH THE CODES INSIDE THE MICROCONTROLLER, MICROCONTROLLER WILL SWITCH ON THE ELECTRO MAGNETIC OPERATED LATCH FOR 10 SECONDS AND USER CAN ENTER THE APARTMENT . IF THE PASSWARD ENTERED IS NOT CORRECT. MICROCONTROLLER WILL DISCONNECT THE TELEPHONE LINE WITHOUT ANY REPLY, BY MAKING P1.0 LOW.
1. IF THE PASSWORD ENTERED IS CORRECT. YOU CAN ALSO CHANGE THE PASSWORD STORED. THIS PASSWORD STORED GOES INTO SERIAL EPROM IC 9346 THAT IS NON VOLATILE RAM IN CASE POWER FAILS THE PASSWORD IS NOT LOST
IF YOU WANT TO CHANGE THE PASSWORD FOLLOW THESE STEPS
DIAL THIS NUMBER FROM OTHER LINE AFTER SIX TO EIGHT BELLS YOU WILL RECEIVE MESSAGE ” PLEASE ENTER YOUR PASSWORD”. (1,2,3,4,5,6 and #)SO YOU ENTER YOUR PASSWORD AND WAIT FOR THE MESSAGE IF YOU ENTER 2 THEN DEVICE WILL RESPOND PLEASE ENTER NEW PASSWORD WHEN YOUR PASSWORD ENTRY IS OVER PRESS # AFTER PASSOWRD ENTRY INDICATE THAT YOUR ENTRY IS OVER AND MICROCONTROLLER WILL RESPOND “YOUR PASSWORD HAS BEEN CHANGED’’ KEEP THE HENDSET BACK ON THE INSTRUMENT FROM WHERE YOU ARE CALLING.NEXT TIME WHEN YOU DIAL ,YOU WILL HAVE TO ENTER YOUR NEW PASSWORD.
SIMILARLY YOU CAN ALSO CHANGE THE TELEPHONE NUMBER.
IC U7 4047 ACTS LIKE WATCHDOG AS LONG COMMUNICATION IS GOING ON IT DOES NOTHING THE MOVEMENT COMMUNICATION IS OVER ITS OUT PUT AT PIN NO 10 CONNECTED TO PIN P3.2-INT0 WILL INTERRUPT THE PROCESSOR AND PROCESSOR WILL MAKE THE P1.0 LOW AND DISCONNECTING TELEPHONE LINE .THE TIME TO SWITCH OFF THE OFF- HOOK RELAY IS DECIDED BY C6 AND R19 CONNECTED TO IC 4047.TRANSISTER T1 AND T2 DRIVES THE LED D12 TO GIVE VISUAL INDICATION OF COMMUNICATION. TRANSFORMER TR1 IS 1:1 TRANSFORMER (160 OHM) PROVIDES ISOLATION BETWEEN TELEPHONE LINE AND SPEECH CIRCUIT.

its from the net.this is what i only got, my prof told me to find developments or upgrade this topic as our thesis proposal..javascript:emoticon(':cry:')
Click to expand...


Why use capital letters? We all can read well with our glasses, anyway all that matter in capitals makes me move away from it, so I dont know how the idea is!
 

mobile-triggerred door lock

i am very sorry..i did not mean it.. i just copied and paste it..im really really sorry for the capital letters..

Added after 5 minutes:

gsm controlled door latch opener with security autodial-up

the said project is designed on the dtmf decoding.our modern telephone and even our mobile phone uses dtmf coding for number dialing. these dtmf codes can be decoded and utilised for useful purposes. the circuit utilises ic8870 for dtmf decoding . microcontroller 89c51 reads these codes and takes the necessary action. door latch can be opened by entering the correct password , you can also connect security sensors of your choice ,in case of any breach of security takes place , the device will dial out the prestored number and delivers an emergency message.

circuit description: telephone line is connected at connector k1. whenever someone calls this number, that time telephone line carries about 70v ringing signal signal is rectified by the bridge d5-d8 and filtered by c4, r20, and d9 and drives an opto coupler ic u8 mct2e . collector of the optocoupler will go low whenever bell rings. since the collector is connected to p2.7 of microcontroller 89c51. number of times it goes low is counted by microcontroller. after six to eight rings,p1.0 will go high and switch on transister t4 and energise the off hook relay rl1 . the contects of relay rl 1 will become closed and the telephone line will get connected to dtmf decoder ic 8870, through c7 and c8. resistance r8 comes across the telephone line and that lowers the voltage,and this ultimately sends messages to exchange the user has lifted the hand set. at the same time ,microcontroller pin p3.5 will trigger the voice ic api8208 where all the messages are stored. caller will get the message”please inter the passward”the default password is 1-2-3-4-5-6. when caller enters this 6 digit password. ic 8870 decodes these numbers and binary numebrs are available at q1 to q4 ,pin no 11-14 of dtmf decoder whenever new code comes pin no 15( stb) of dtmf decoder will pulse low, and is connected to p1.1 informing microcontroller that codes are available please take them . microcontroller will reads these codes one by one, through its line p1.2-p1.5. if the codes matches with the codes inside the microcontroller, microcontroller will switch on the electro magnetic operated latch for 10 seconds and user can enter the apartment . if the passward entered is not correct. microcontroller will disconnect the telephone line without any reply, by making p1.0 low.

1. if the password entered is correct. you can also change the password stored. this password stored goes into serial eprom ic 9346 that is non volatile ram in case power fails the password is not lost

if you want to change the password follow these steps

dial this number from other line after six to eight bells you will receive message ” please enter your password”. (1,2,3,4,5,6 and #)so you enter your password and wait for the message if you enter 2 then device will respond please enter new password when your password entry is over press # after passowrd entry indicate that your entry is over and microcontroller will respond “your password has been changed’’ keep the hendset back on the instrument from where you are calling.next time when you dial ,you will have to enter your new password.
similarly you can also change the telephone number.

ic u7 4047 acts like watchdog as long communication is going on it does nothing the movement communication is over its out put at pin no 10 connected to pin p3.2-int0 will interrupt the processor and processor will make the p1.0 low and disconnecting telephone line .the time to switch off the off- hook relay is decided by c6 and r19 connected to ic 4047.transister t1 and t2 drives the led d12 to give visual indication of communication. transformer tr1 is 1:1 transformer (160 ohm) provides isolation between telephone line and speech circuit.
 

existing sms-controlled automatic door lock

It would be helpful if you also posted a schematic - it would make it much easier to understand the circuit if we could see it.

Also, from the circuit description it sounds like this device is connected to a "land line". Where does the GSM come in?
 

cell phone controlled door latch.

yeah..the one in the door is connected to a landline.. is it ok if we replace it with a cellphone?
 
gsm door relay

Do you have a schematic? I wouldn't use a cellphone, but a GSM module (SIMcom, Telit, etc.).

Comments:
1 - The GSM module won't generate a 'ring voltage' like a land-line does. It will send a string indicating a call is coming in.
2 - With the right uP you can eliminate the DTMF decoder and have the uP do the decoding.
3 - You could have it either call out, or send an SMS text message when a security sensor is triggered.
 

8870 off hook

my prof suggest to use nokia 6210 instead of gsm module..is that ok?

Added after 2 minutes:

im sorry the diagram cannot be paste..
 

how to make lock of a door using gsm technology?

I don't use phones for these types of projects, so I don't know anything about that phone. The phone would need to have a serial port to connect to it, and support an interface to control it.
 

gsm doorlock

i had search in some other forum that Nokia6210 can be used as alternative to GSM module..but we must also create a DLR-3p cable to interface it with MCU and PC.
 

dtmf latch switch

yeahh..i saw that in electronicslab.ph
but the problem here is where to find that model these days... thanks by the way!
 

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