Make CAN Beyond Automotive into Industrial

　　自從第一控制器局域網（CAN）出現在1987，曾經是一個汽車網絡接口現在已經擴展到工業(yè)應用。隨著越來越大的足跡來了收發(fā)器的需求，總線長度更長，更多的總線節(jié)點，更高的數據吞吐量和更大的電壓隔離。

　　現在有超過20家半導體公司提供設備，設計人員有許多決定，并需要充分了解規(guī)范的細微差別和最新的迭代，然后選擇最佳的設備。為此，我們將探討規(guī)范和主題，如不對稱，然后讓你加快速度在一些有趣的CAN設備，以及如何充分利用它們。

　　Why CAN？

　　The controller area network （CAN bus） was first developed in the early 1980s at Robert Bosch GmbH. The first CAN controller chips were introduced in the market in 1987 and the first vehicle to implement the CAN bus was on the road in 1988. In the almost 30 years since， usage of the CAN bus has become ubiquitous in vehicles all over the world and in various forms of transportation， including busses， trains， planes and ships.

　　It is also widely used in many industrial settings such as plant automation， agriculture and heavy equipment， medical devices， elevators， and lift control. It is highly suitable for many embedded control applications as a low cost， low protocol overhead， deterministic network that features error detection and retransmission.

　　More than 20 semiconductor companies offer devices that support the CAN bus and there are many tool vendors and commercial and open source versions of software available – from drivers up through middleware and higher level protocol stacks.

　　Let’s take a look at some of the characteristics of the CAN bus that makes it useful in so many settings.