GSM
Being about to purchase a car,
I have faced one of the problems that many as I, have faced perhaps in this situation: the installation of an alarm device
Obviously there are manu types of alarm device and for all the pockets, but among the most expensive we can enumerate the type with GPS: in degree to reveal the position of the car with absolute precision.
Thinking to how much above, of the system GSM has remembered, I have reached the conclusion that exists a more economic even if less precise way.
I make sense of better me:
When a jail cellular has turned on,
it
talks through of the equipments provided of spar (said BTS) that by now we see
anywhere: on the roofs of the houses or on small pylons.
Every BTS has a code of recognition that sends to the jail cellular: LAC AND CID.
The
LAC identifies the manager, while the CID is a number that identifies the BTS.
If
the first one interests us few, considering that the manager of the card (said
SIM) inserted in the jail cellular we know it, instead the CID tells where we are,
approximately, in the ray of some kilometer.
She
can seem too much approximate as precision, but in some cases she can help for
the recovery. We don't forget besides that if the jail cellular place in the car
sees more BTS, could record also periodically him on the others, allowing so a
triangulation that tightens of very the field of search.
There are some sites internet that brings the CID associated to every BTS:
http://www.gjro.it/bts/index.html
http://freeweb.dnet.it/fame/michaelgsm/cercare.htm
http://btsfriuli.altervista.org/speciali/netmonitor.htm
They are not very adjourned, therefore another method is that to make a stroll in the district with a jail cellular provided of NetMonitor:
It deals
with the possibility to read on the display among the so many things, also the
CID under which is recorded, as well as the CID of the neighboring BTS.
Which
are the jail cellular that manage the NetMonitor???
How can the search be developed??
On your
jail cellular the SMS come, sent by the car, that bring the CID crossed during the
march. It doesn't stay that to again cross the probable roads used by the
thieves
With
your jail cellular in which the netmonitor is activated, following the to evolution
of CID under which the jail cellular is recorded during as soon as the run, you will
understand what road has been used for the escape.
A friend has asked me the possibility to use the module as alarm device for the house.
I have
inserted therefore 2 input and 2 out of command:
the
first ones serve to send SMS that warns some presence of possible alarms, the
seconds to command the lighting or arrest of any system. To the imagination
there are no limits.
As if it
was not enough, to save the cost of the SMS is possible to send a call to the
number memorized in the module, when the alarm is present.
But does
thing serve for realizing the all then???
They are enough:
1) a cellular
Siemens type: S45, M50, M35 etc...
2) few
component as from attached scheme.
3) a PIC
16f628A.
4) a
connector for the Siemens.
and the
game is made.
With a
Siemens s45, has verified the possibility to use the commands AT that the most
greater part of the cellular Siemens (also other jail cellular with inside modem) it
makes connecting me through the connector of interface available. Precisely the
same used for connecting the position battery.
PIC 16f628A of the Microchip.
I have sweat seven shirts to perform the planning in assembler (if I/you had used a planning in basic, I would not have succeeded in making to enter the program the 2K envoys to 16f628A disposition).
And' been born so a very small module, but in degree to manage how much above.
Some other friend has asked me to save his work to send a SMS to activate it the evening and another the morning to disarm it.
I have
trained therefore an entry to the PIC to allow, through an interrupter hidden in
the car, to stop and to decontrol the operation of the module.
But as the all works????
These
are the instructions:
If you
are wanted to know the state of the module, all it takes is sending the SMS: 000
to the jail cellular connected to the module.
You will receive a report as from following example:
ALL. = No it means that there normally is not a negative on the entry that is normally opened and it is present on the entry that is normally closed. Obviously ALL. =Yes this means the complementary one than above.
SEND=YES it means that the appearance or the disappearance of an alarm will be sent throught sms or away through a call to the remote jail cellular.
CID=NO if it is Yes, to every variation of the CID, a SMS will be sent that brings the new CID.
COM1=YES from the exit of the command 1 a positive tension is going out, that is normally used for exciting a relay or to activate other devices. (you see scheme)
COM2=YES if it had been No, from the exit of the command 2 a negative tension is going out, to intend him as I command inactive.
AL+CI=NO
this function has been asked me by a friend that it uses the module in its car:
with the
risk to uselessly wake up him to the arrival of every SMS that necessarily it is
not that of Alarm.
Activating
instead with the SMS 091 this function, to the presence of a mass or a positive
on one of the two entries, part automatically the function send of the CID.
Then, if
during the night there is a presence of alarm, the SMS will be sent that bring
the CID.
RECAPITULATION:
If the send of the Report is wanted.
If you
want to activate the send through SMS of the appearance or disappeared of the
alarm, all it takes is sending the SMS: 011 to the connected jail cellular to the
module. Of answer the above statement report will be sent and that brings besides
SEND=YES
N.B.
with SEND=YES
To every
appearance of an alarm the dispatch of a SMS is had: ALARM.
If
you want to activate the dispatch of a call to the appearance of the
alarm (it is not anticipated dispatch called to the disappearance), all it takes
is sending the SMS: 012 to the connected jail cellular to the module. Of answer the
above statement report will be sent and that brings besides SEND=YES
ATTENTION:
I have not realized a routine of verification yet that the call has gone to good
end, for which if the call is made toward a busy jail cellular or not attainable,
the dispatch of the alarm is lost.
I
recommend you to activate, on the jail cellular that has to receive the call, the
deviation to the reception office for busy or unattainable.
If
you want to disarm the dispatch of the alarm, all it takes is sending the SMS:
022 to the connected jail cellular to the module. Of answer the above statement report
will be sent and that brings besides SEND=NO.
If You
want to activate the dispatch of the CID, all it takes is sending the SMS: 033
to the connected jail cellular to the module. Of answer the above statement report
will be sent and that brings besides CID = YES.
If you
want to disarm the dispatch of the CID, all it takes is sending the SMS: 044 to
the connected jail cellular to the module. Of answer the above statement report will
be sent and that brings besides CID = NO.
If you
want to activate the command 1, all it takes is sending the SMS: 055 to the
connected jail cellular to the module. Of answer the above statement report will be
sent and that brings besides COM1=YES.
If you
want to disarm the command 1, all it takes is sending the SMS: 066 to the
connected jail cellular to the module. Of answer the above statement report will be
sent and that brings besides COM1=NO.
If you
want to activate the command 2, all it takes is sending the SMS: 077 to the
connected jail cellular to the module. Of answer the above statement report will be
sent and that brings besides COM2=YES.
If you
want to disarm the command 2, all it takes is sending the SMS: 088 to the
connected jail cellular to the module. Of answer the above statement report will be
sent and that brings besides COM2=NO.
If you
want to activate AL+CI=YES, all it takes is sending the SMS: 091 to the connected
jail cellular to the module. Of answer the above statement report will be sent and
that brings besides AL+CI=YES.
N.B.
With AL+CI=YES the module ignores both the dispatch of the alarm and is the
dispatch of the CID therefore INVIO=YES and CID=YES even if activated they are not
operational.
If you
want to disarm AL+CI=NO, all it takes is sending the SMS: 092 to the connected
jail cellular to the module. Of answer the above statement report will be sent and
that brings besides AL+CI=NO.
Reassuming
FUNCTION | ACTION | ANSWERED |
Asked for send report |
Send to module: SMS = 000 |
Recive report |
Activation: alarm send SMS |
Send to module: SMS = 011 |
Recive report |
Activation: alarm send call |
Send to module: SMS = 012 |
Recive
report |
Deactivation alarm send |
Send to module: SMS = 022 |
Recive report |
Activation: CID send |
Send to module: SMS= 033 |
recive SMS: LAC + CID |
Deactivation: CID send |
Send to module: SMS = 044 |
Recive report |
Activation Command 1 |
Send to module: SMS = 055 |
Recive report |
Deactivation Command 1 |
Send to module: SMS = 066 |
Recive report |
Activation Command 2 |
Send to module: SMS = 077 |
Recive
report |
Deactivation Command 2 |
Send to module: SMS = 088 |
Recive report |
Activation AL+CI |
Send to module: SMS = 091 |
Recive
report |
Deactivation AL+CI |
Send to module: SMS = 092 |
Recive report |
PRELIMINARY
OPERATIONS
1) you
connect the jail cellular and you feed the module, you verify that the led called
green in the scheme ignites of fixed light and extinguishes him for few instants
every 2 seconds around. We are so certain that the module talks with the jail cellular.
(if the
Green led, ignites and extinguishes him to the rhythm of around 10 seconds, it
means that the module doesn't receive answered by the jail cellular).
But as
we do to tell the module which is the number to which to send the messages???
To the
first activation to attentively follow how much it follows:
1)To
send to the jail cellular connected to the module the password of 8 characters being
careful to the capital ones if you introduce alphabetical characters.
2)To
attend at least 90 seconds.
3)To
send therefore a SMS with a message any eses: AAA.
4)To
attend the arrival of the SMS: STORE.
To this
point the number of the SIM on which you have received the aforesaid message, is
the number to which the module will send the SMS.
And if I
wanted to change the number where to send the SMS???
1)To
send from the new number to which the messages will be destined, the password of
8 characters being careful to the capital ones and lower case letters.
2)To
attend that on the precedent number, which you/they reached the SMS sent by the module, arrivals the SMS: Invia SMS.
N.B. if
it doesn't prepare him more than the preceding SIM because lost or other…, to
Attend at least 90 seconds.
3)To
send therefore a SMS with a message any eses: AAA.
3)To
attend on the new number the arrival of the SMS: STORE.
The
activation is completed.
To this
point the number of the SIM on which you have received the aforesaid message, is
the number which you/they will be envoys the SMS.
You
remember that:
The
attempt to perform commands from another SIM, provokes toward the number
previously memorized in the module the dispatch of the SMS,: UNKNOWN.
------------
If the SMS that you have sent is wrong, it will be received: NOT VALID.
------------
After
the first activation every time that the jail cellular will be connected the SMS to
the module you/he/she will be sent: CONNECT.
This
message is very useful to understand if some forgery contact exists in the
connection between jail cellular and module, or when the module he is again fed after a
turning off (for instance when a possible buffer battery is unloaded in as for
long without net feeding or it is damaged).
Another
case exists in which is possible that the message is received: CONNECT. That
is when the received SMS is affection from errors, in such case the jail cellular
will jam for few second making to restart the module.
------------
The led
called red-haired man on the scheme, ignites when an alarm is present.
------------
Last
recommendation: it is preferable to polish up the SIM from all the messages
memorized before using her/it with the module.
Even
if the same automatically handles to cancel the received ones, an ache operation
of the connection could saturate the memory of the messages of the SIM and
therefore not to allow the reading of those upcoming.