What is the Principle of Keyless Entry for Cars?

[VonCamila]

Through Radio Frequency Identification (RFID) technology, this system identifies the signal from the smart chip inside the car key, allowing the anti-theft computer to verify the key's legitimacy and then control the door unlocking via bus technology. When the car owner with a valid key enters the effective recognition range of the vehicle, the anti-theft computer confirms the key's validity, and the door automatically unlocks while disabling the anti-theft system. Below is a detailed introduction: Introduction: The car keyless entry system, abbreviated as PKE (PASSIVE-KEYLESS-ENTER), incorporates the world's most advanced RFID technology and vehicle identity coding recognition system. It pioneers the development of compact, low-power RF antenna solutions. Main Functions: When the key approaches the vehicle, the doors automatically unlock, and the anti-theft alert is deactivated, accompanied by the turn signals flashing twice. When the key moves away from the vehicle, the doors automatically lock, and the anti-theft alert is activated, with the turn signals flashing once and the horn emitting a short beep.