汽车电子防盗系统组成与工作原理

江南才子

　　电子防盗器的组成
　　The composition of Electronic Anti-theft device
　　电子防盗器由脉冲转发器、识读线圈、防盗器控制单元和发动机控制单元等组成。
　　The electronic anti-theft device is composed of pulse transponder, reading coil, anti-theft control unit and engine control unit.
　　脉冲转发器是一种无电池驱动的发送和接收元件。当汽车钥匙点火开关闭合时，识读线圈产生的电磁场就把能量发送给脉冲转发器。这时，脉冲转i发器开始工作，并且通过识读线圈把已编程的代码发送给防盗器控制单元。!每把钥匙都有其自己的代码。识读线圈被设计成既能把能量发送给脉冲转发:器，又能把存储在脉冲转发器中的代码发送给防盗器控制单元。
　　Pulse repeater is a kind of transmitting and receiving element without battery drive. When the ignition switch of the car key is closed, the electromagnetic field generated by the coil is read and the energy is sent to the pulse transponder. At this time, the pulse converter I begins to work, and the programmed code is sent to the alarm control unit by reading the coil. ! Each key has its own code. The reading coil is designed to not only transmit energy to the pulse forwarding device, but also send the code stored in the pulse transponder to the alarm control unit.
　　电子防盗器的工作原理
　　Working principle of Electronic Anti-theft device
　　当用汽车钥匙把点火开关闭合时，防盗器开始工作。防盗器控制单元感应地把能量经识读线圈发送给脉冲转发器。此时，处于工作状态的脉冲转发器就通过识读线圈把代码发送到防盗器控制单元。防盗器控制单元把接收到的代码与先前储存在其内部的已编程的代码进行比较、核对。
　　The alarm began to work when the ignition switch was closed with the car key. The alarm control unit sensitively transmits the energy to the pulse transponder through the reading coil. At this time, the pulse transponder in the working state sends the code to the alarm control unit by reading the coil. The alarm control unit compares and checks the received code with the programmed code previously stored inside it.
　　之后，防盗器控制单元又核对发动机控制单元的可编程代码是否正确。该可编程代码是由发动机控制单元存储在防盗器控制单元中的(可编程随机代码发生器在每次起动发动机的时候都会产生一对新的代码，分别存储在防盗器控制单元和发动机控制单元中)。如果上述这些代码不能两两一致，发动机将在起动2秒钟后被关停。
　　After that, the alarm control unit checks whether the programmable code of the engine control unit is correct. The programmable code is stored in the alarm control unit by the engine control unit (the programmable random code generator produces a pair of new code each time the engine is started, which is stored in the alarm control unit and the engine control unit, respectively). If the above code does not match in pairs, the engine will be shut down after starting for 2 seconds.

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