Vehicle passive keyless entry system

タイトルまたは説明

This is an automatic car alarm system, named as passive keyless entry(PKE). It is a lock controller, protector, window closer and reminder.

*- Take a SMART KEY with you, when you approach your car, the system will unlock it, when you stop the car and go far, the system will lock and arm automatically.

*- The system will close the unclosed window(s) for you when you leave.(some cars need window closers)

*- When you leave,if any door is open, the system will sound to remind you.

*- This system is also a immobilizer.
   When the system alarm, it will cut off the oil electrical circuit, so the thief can't drive the car away.

*- You also can remote start your car.
   Just press the ' light ' on the SMART KEY, the engine of the car will be started.

How does it work？
The system use active RFID technology, the SMART KEY is a active Tag, and the main unit is a Reader, they can communicate with each other. Usually the tag is sleeping,but when it enter the detecting area of the reader(electromagnetic field), it will be waken up by the reader and send password to it, the reader will identify the password and decide the next action. 

As the Reader always knows if the tag is in its field, it can do many things according to the location of the reader, for example, it can lock the car when the tag leave from its field.