Function of automobile key chip

Hello, children. Today, Bian Xiao Auto will briefly introduce to friends how to bond the keys of automobile chips and how to use them in the automobile field. These chips are called magnetic coupling and forwarding systems. The magnetically coupled propulsion system is passive in nature. The chip itself does not need continuous power supply, so it does not need to be powered on all the time. As long as it is within the electromagnetic wave range of 125kHz frequency. Bian Xiao will patiently and simply introduce the key welding method of automobile chips to friends, hoping to help them.

Function of automobile key chip

When the car key is turned on at the ignition switch, the engine control unit (ECU) on the car will send a set of encrypted electronic coded signals to the chip in the car key. Only when ECU can read the feedback and receive a good anti-theft coded signal can the car start. Therefore, even a simple car key, without any buttons, can also open and open the car's anti-theft system through the internal chip code. Car keys with chips can only be programmed with special original supporting equipment.

Automobile key chip (plastic package type)

In the automotive field, chips are called magnetic coupling and forwarding systems. The magnetically coupled propulsion system is passive in nature. The chip itself does not need continuous power supply, so it does not need to be powered on all the time. As long as it is within the electromagnetic wave range of 125kHz frequency. Under the action of electromagnetic waves, the chip will generate its own coded signals, most of which are in the range of 1cm to 15cm. Because this is a radio frequency, it can penetrate the material, so that the chip can take the shape of a key head made of plastic or rubber without showing its appearance.

The working principle and flow of key identification in most automobile anti-theft system chips are basically similar. When the car chip key is inserted into the ignition lock, turn &; ldquo open &； Rdquo or&; Ldquo operation &; Rdquo positioning, installing an induction coil around the ignition lock will emit electromagnetic waves. The coil radiates in the key chip, and the electric energy of electromagnetic wave makes the electronic chip send out coded signals. The signal is usually an alphanumeric sequence and is considered as an identification code. Read the signal in the induction coil and send it to the electronic control unit computer to identify the signal. If the confirmation signal is already in the memory of the ECU computer, it is accepted by the ECU computer, and the ECU adjusts other electronic components of the automobile to the allowed execution state. At this time, the engine of the car can run and start at will.

Automobile key chip (glass package)

Classification of automobile key chips

Fixed code chip and rolling code encryption type.

Fixed code: The code is fixed and consists of numbers and English letters (the data is unchanged when the engine is started).

Rolling code: Basically, each key has a different electronic code, but the code will change every time the car engine is started with the key. For example, the code of the chip has been completely copied, and it is difficult for the regulator system to crack it by copying the memory of the chip, because the code of the chip basically changes dynamically every time it is started.

Two-way password: the latest encryption code of chip and chip regulator (two-way data encryption). It is equipped with an internal program algorithm to decrypt each encrypted message.

The types of commonly used chips are as follows:

Philips encryption chip

Ph/cr2 Philips Second Generation Encryption Chip

Transmission electron microscope/computer

1 1。 Ndash Big Mac Chip (Fiat &; Ndash fixed code)

12. Big Mike chip (Mazda &; Ndash fixed code)

13. fujilong silicon wafer (fixed code)

2 1. Shengjia chip (fixed code)

22 pounds. Shengjia Chip (Fixed Code)

23 pounds. Shengjia Chip (Fixed Code)

30 pounds. Philips chip (read/write &; Ndash fixed code)

Forty pounds. Philips encryption chip (Opel)

4 1. Philips encryption chip (Nissan)

42 pounds. Philips encryption chip

44 pounds. Philips encryption chip

45 pounds. Philips encryption chip (Peugeot)

46 pounds. Philips second generation encryption chip

48 pounds. Meijia MOSI encryption chip

53 pounds. Philips Chip (Audi)

73 pounds. Philips Chip (Fixed Code)

93 pounds. Philips Chip (Daewoo Electric)

4C & ampNdash Texas Chip (fixed code)

4D & amp； Ndash Texas encryption chip

8C & ampNdash Big Mac Encryption Chip

8D & ampNdash chip of Beijing Automotive Co., Ltd. (non-copy)

4D chip:

Sixty pounds. Texas encryption chip (universal)

6 1. Texas Chip (mitsubishi electric 3)

62 pounds. Dezhou Chip (mitsubishi electric 2)

63 pounds. Texas Encryption Chip (Ford)

64 pounds. Texas Chip (if Chrysler Jeep mines in 2000)

65 pounds. Texas encryption chip (for Suzuki)

66 pounds. Texas Chip (for Suzuki II)

67 pounds. Texas Encryption Chip (Toyota/Lexus)

68 pounds. Texas Chip (for Toyota/Lexus 2)

XX & ampNdash Texas Encryption Chip (New Wide Type)

Well, today, a friend of Bian Xiao Automobile briefly introduced how the keys of the automobile chip are welded. After listening to the brief introduction of Bian Xiao Automobile, I wonder if they have a deeper understanding of the key welding of automobile chips. I hope the profile of Bianxiao Automobile can help my friend. If you want to know more, pay attention to this website. Bian Xiao's car is waiting for you here!

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