What is the working principle of car anti-theft lock?

Before introducing the principle of car anti-theft lock, we first introduce the concept of car anti-theft lock. Car anti-theft lock can be basically divided into three categories according to the technical principle: mechanical anti-theft lock, electronic anti-theft alarm lock, networked anti-theft (positioning, tracking) system. Car anti-theft locks include: electronic car anti-theft lock, network car anti-theft lock, oil road lock, clutch brake anti-theft lock, wheel anti-theft lock, gear lock, steering wheel lock, car anti-theft disk.

Car anti-theft lock principle

Automobile engine anti-theft logic, when the ignition switch is turned on, the key transponder and the anti-theft controller form the first information intersection, the key and the chip mutual recognition code are different, the anti-theft controller will not continue to communicate with the ECU, and the ignition system and the fuel injection system circuit maintain the circuit breaker. State, the engine cannot start. If the signal is matched, the anti-theft controller receives the verification request from the ECU. According to the set 32-bit random code and the calculated 128-bit plus password, the ECU interacts with the anti-theft controller again. After the password is the same, the ECU is unlocked. Can start normally. Of course, the engine anti-theft is not a panacea, the market can find decoders for less than a few thousand dollars, there are hidden dangers. [1]

The simple understanding is that inside and outside the double-layer locking mechanism, even if you have the key to open the outer door in your hand is not enough, you need to use the "dark language" conversation with the person behind the door, and correctly, he will open the door from the inside. Double open the back door to open. And you will have a slang manual, each time the slang is different. Engine anti-theft is like a doorman hired 7x24 hours. However, your whispering manual has been copied and used by others, and there are hidden dangers. [