CAN，全称为“Controller Area Network”，即控制器局域网，是国际上应用最广泛的现场总线之一。最初，CAN被设计作为汽车环境中的微控制器通讯，在车载各电子控制装置ECU之间交换信息，形成汽车电子控制网络。比如：发动机管理系统、变速箱控制器、仪表装备、电子主干系统中，均嵌入CAN控制装置。-CAN, called the "Controller Area Network" LAN controller that is the world's most widely used fieldbus one. Initially, CAN was designed as a vehicle environment microcontrollers communications, the car of the electronic control devices to exchange information between ECU, the automotive electronic control network. For example : engine management systems, transmission controllers, instrumentation and equipment, electronic trunk system, both embedded CAN control devices.