Car Anti-theft + Anti-snatch project

[zaeem9236]

Aoa guys,
as u all know that vehicle theft becomes very common nowadays. There are large number of anti-theft devices are available in market, but non of them is 100 percent fool proof, in fact i personally think some of the electronic anti theft devices like steelmate alarm,tracker is a joke for car thieves.I think adding a simple relay (most of the time under the dash board of driver side) for engine killing will not secure your car as much as u think.
any ways... I have made Anti theft + Anti snatch device for protecting my car. The circuit is connected with all 4 door buttons of car, suppose the car is in Anti-Snatch mode and you are driving the car, if some one snatches the car from you and drives it away, after some time(time is adjustable) the car will stop. For engine killing i used transistor(MOSFET) based digital logic circuit, which i think is much more secured than relay, correct me if I am wrong:S.
I want help and suggestions from you guys to improve my device and make it more fool proof. And those pakwheelers who know about car electronics, please suggest me the best way for engine killing. I am interested in engine killing from car ECU, but its not an easy job:(.
any ways... if you have any idea/suggestion, Welcome to the page:)


Below are the pics and features of my project

Features:

3 Modes (Lock Mode, Unlock Mode, Anti-Snatch Mode),
4x4 keypad for password entering and 16x2 LCD for information display and a buzzer for sound,
If the car is in Lock Mode, 4 digit password is required to Unlock the car,
If some one snatch the car from you, the engine will automatically disabled after some time(time is adjustable),
Car horn will turn on automatically if password is not entered in required time after snatching,
The system is Anti reset able, the removing of battery will not effect the system because i used EEPROM to store data,
For engine killing I used transistor(MOSFET) based digital logic circuit.

[zaeem9236]

I recently installed this in my Santro and its working great

[rafay710]

Nice to see someone trying something that is new and seems to be working. Great initiative !

[HAshims]

overall project is working as relay right? It looks enough secured to me because no thief has time to locate circuits and disconnect them.

I worked on something same(using android and arduino car automation and security).

[DANY_KHANN]

I remember a long long time ago in 1998 or 1999 may late father had a mehran he bought it from an Army captain & that mehran was with same type on security system but without the screen & it was having a phone like key pad with a 4 digit security code.

[muzamil_r0cKy]

How much did this cost? Can you build one for me too? Are you planning to commercialise it?

[SER_GTR]

Silently Killing Fuel Pump Or IGN Of EFI Cars Is Easy & Very Good In Sense If Someone Tries To Start...He Will Easily Crank But Will Not Be Able To Start It....!

[zaeem9236]

overall project is working as relay right? It looks enough secured to me because no thief has time to locate circuits and disconnect them.

I worked on something same(using android and arduino car automation and security).

i am using transistor(MOSFET) based digital logic circuit,
btw ur project completed? and what do u mean by car automation?

[zaeem9236]

I remember a long long time ago in 1998 or 1999 may late father had a mehran he bought it from an Army captain & that mehran was with same type on security system but without the screen & it was having a phone like key pad with a 4 digit security code.

oh yes someone told me the same story that old army trucks have keypad lock and the keypad is like round dialer of old telephones

[zaeem9236]

How much did this cost? Can you build one for me too? Are you planning to commercialise it?

yes i can built one for u too,
for price check your inbox.

[Mun33b]

So cant this circuit be bypassed? The thing is, if you are using it to cut ignition signal, thieves are very professional in hot wiring. It would be much better idea to cut off multiple signals, so it becomes hard for them to figure it out, plus hide the relays at not so obvious places. Each relay for a signal at different location.

[zaeem9236]

So cant this circuit be bypassed? The thing is, if you are using it to cut ignition signal, thieves are very professional in hot wiring. It would be much better idea to cut off multiple signals, so it becomes hard for them to figure it out, plus hide the relays at not so obvious places. Each relay for a signal at different location.

thanks for your suggestion,
again i am not using relay, i used transistor(MOSFET) based digital circuit,
now come to the question you are asking about bypass of the circuit, i have made second digital circuit(90% completed), if you are trying to hot wire the circuit, the second circuit gets activated and produce a pulse, pulse is used to blow one or multiple fuses. i hope u understand.

[Mun33b]

thanks for your suggestion,
again i am not using relay, i used transistor(MOSFET) based digital circuit,
now come to the question you are asking about bypass of the circuit, i have made second digital circuit(90% completed), if you are trying to hot wire the circuit, the second circuit gets activated and produce a pulse, pulse is used to blow one or multiple fuses. i hope u understand.

Okay. got it. so you are using only ign signal currently?
If i get it correctly, this circuit is between ign signal only?

[ali454]

i sometimes think about pulling out the Fuel pump relay and taking it with me, can that work?sometimes i even wonder of positioning that relay in the cabin so i do not have to pop the hood to remove it.anybody who have tried it?

[zaeem9236]

Okay. got it. so you are using only ign signal currently?
If i get it correctly, this circuit is between ign signal only?

nope, primary circuit is connected with fuel pump and ecu, if the car is in lock mode and some one bypass one of these thing,
the second circuit gets activated which will burn ignition coil fuse.
after all i am interested to kill engine by ECU, which is too difficult but hope is everything(H)

[zaeem9236]

i sometimes think about pulling out the Fuel pump relay and taking it with me, can that work?sometimes i even wonder of positioning that relay in the cabin so i do not have to pop the hood to remove it.anybody who have tried it?

yes it works, removing relay will disable your engine,
it can be easily hacked too by shorting the relay contacts, but the point is who knows that relay is missing:P

[ali454]

yes it works, removing relay will disable your engine,it can be easily hacked too by shorting the relay contacts, but the point is who knows that relay is missing:P

Exactly.the thief would naturally hot wire the ignition but would not think about the missing fuel pump relay..i once saw an uncle who parked his Fx , opened the hood , removed the ignition wire connecting coil with distributor and took it with him..Voila!

[mfdarvesh]

Subscribed ..

[Mun33b]

nope, primary circuit is connected with fuel pump and ecu, if the car is in lock mode and some one bypass one of these thing,
the second circuit gets activated which will burn ignition coil fuse.
after all i am interested to kill engine by ECU, which is too difficult but hope is everything(H)

Great idea. ECU schematics might help.

[zaeem9236]

Exactly.the thief would naturally hot wire the ignition but would not think about the missing fuel pump relay..i once saw an uncle who parked his Fx , opened the hood , removed the ignition wire connecting coil with distributor and took it with him..Voila!

hahaha , i saw too many peoples doing these type of things...