Open systems interconnection model 開放式系統(tǒng)互聯(lián)
In chapter 2 , the technology requirements and general information are introduced , and two interconnection model of ethernet and serial are described as well 第二章介紹了項目的技術(shù)要求和概況,以及建立的兩個互聯(lián)模型。
Functioning at the network layer of the open systems interconnection model , the packet - encryption device at the originating site encrypts the entire packet , including the ip header , and provides it with a new header 由于是在“開放系統(tǒng)互連”模型的網(wǎng)絡(luò)層上起作用的,始發(fā)站上的包加密裝置對整個包加密,包括ip報頭,都提供一個擁有新報頭的包。
Lonworks fieldbus is a brand new network integrating automatic control technology . it is based on the open systems interconnection model , can change the traditional transducer from isolated information acquisition system to distributed , intelligent transducer network 它采用的數(shù)字化通信方式、智能化測控設(shè)備、全分散控制結(jié)構(gòu)及開放性互連規(guī)范,使其可以徹底打破傳統(tǒng)傳感器系統(tǒng)信息孤島的局面,完全符合當(dāng)今世界傳感器系統(tǒng)分散化、網(wǎng)絡(luò)化、智能化的發(fā)展趨勢。
In order to solve at the communication problem lies between serial and ethernet , this paper presents two simplified interconnection models . the 8 bit , 16 bit microcontroller and dsp are used to drive the 10m isa - bus network card to implement the models . the practical application acts as what ' s expected 針對項目中遇到的串行通訊與以太網(wǎng)互聯(lián)的問題,論文提出了兩種簡化互聯(lián)模型,并分別采用8位、 16位單片機(jī)和dsp為核心驅(qū)動10misa總線網(wǎng)卡實現(xiàn)了兩種模型,在實際應(yīng)用中達(dá)到了預(yù)期效果。