"won't it stop working when it cuts off its own power?" Yeah, that's the idea. After a certain amount of time of the car alarm going off, I don't know how but maybe some kind of IC will trip some kind of switch— like a circuit breaker— that would have to be manually reset after the device system...
Well we don't have a specific requirement since we have to come up with a product that has something to do with security and if we make something that already exists, we have to improve it in some way. My group decided with preventing the car from being hot-wired and the whole car being stolen...
I'm working on a school project and I have to find and/or make a circuit schematic to a car anti-theft system that will disconnect the car battery shortly after the car alarm goes off. I am new to the electronic engineering field but I can differentiate a few different components on a schematic...