汽车发动机防盗钥匙认证系统设计关键技术分析

摘要

There are several key points for the immobilization system design, including the design and validation for the system reliability, design for driving circuit of simulative port coil and PCB layout. Based on the validation between BCM and the key, the key technologies in validation are introduced in details.%汽车发动机防盗钥匙认证系统存在若干技术难点，如系统可靠性设计、验证，模拟端线圈驱动电路设计、PCB板布线技巧等，软件设计仅是其中之一。本文以车身控制器和钥匙间的相互认证过程为主线，详细介绍认证过程中所涉及的若干关键技术：如何平衡防盗系统和其他高实时性要求系统对CPU资源的需要。车身控制器和防盗基站间的通信原理及注意事项。读、写钥匙转发器原理及软件设计应用技巧等。