數(shù)據(jù)通信驅(qū)動M2M自動化進(jìn)程

　　網(wǎng)絡(luò)連接正在成為嵌入式系統(tǒng)和基于點(diǎn)到點(diǎn)協(xié)議的移動/便攜設(shè)備的機(jī)器對機(jī)器（M2M）連接的默認(rèn)方法。這些系統(tǒng)利用了多種數(shù)據(jù)格式和網(wǎng)絡(luò)方法，從無線選項(xiàng)到全高速局域網(wǎng)/廣域網(wǎng)環(huán)境。

　　實(shí)現(xiàn)這種連通性的主要方法有兩種：一種是添加到現(xiàn)有設(shè)計(jì)的現(xiàn)有連接中的附加網(wǎng)絡(luò)控制器；以及通過其微控制器和傳感器子系統(tǒng)中的嵌入式功能將網(wǎng)絡(luò)協(xié)議和接口結(jié)合起來。這些應(yīng)用程序的關(guān)鍵特性之一是開發(fā)這些接口所需的軟件和固件控制及其相關(guān)的開發(fā)環(huán)境。

　　Legacy systems

　　Most embedded systems that have been deployed in the field now need to be connected to a network in order to provide automated monitoring of their progress and system health. The challenge is how to bring this new functionality without having to re-qualify the whole design or， worse， change the firmware for the system and have to re-verify correct operation. The two methods that are most convenient for these current designs involve adding networking functions to an existing port on the system or adding a network adapter chip to the PCB that interfaces directly with the microcontroller.