【導(dǎo)讀】evaluationofscientificdevelopment.Naturesecuritytype--naturesecurityistomaintenancepeopleofhealthvaluefortarget,throughstrengtheningsecuritybasedmanagement,andriskmanagement,andequipmentmanagementandtechnologysupervision,ensureproductioninthepeople,andreal,andsystem,andsystem,elementssecurityreliable,andharmonyunified,fulcontrolvariousagainstfactors,achievedthoughtnoslack,andmanagementnoemptydocum

　　

【正文】 ot or vehicle ex ception business 30 car t im es, his par ds business war ning 244 ar ticle, vehicles and dr iving people sound video r egulat or y scr eenshots 1852 Zhang, checks m ot or vehicle ar chives 716 pieces t im es, and m edium bus, and m edium above t r uck, and Of hazar dous chem icals, vehicles and school buses and ot her key vehicle inspect ion r ecor d of 420. ( C) based on t heir own, and st rict adher ence t o def ense, m ore cheating, f alse f alse f ugit ive suspects, r obbery suspect vehicles and t he I nt er cr ackdown. DM V f ul play t o t he f ir st line of Def ense posit ion contr ol, investigat ing cheating, f ake ident if ication and r obber y suspect vehicles t hrough operat ional wor k, and car efuly exam ine t he documents and legal pr oof , check t r aff ic violat ions, t r aff ic accident s, t he f ugit ive suspect suspect ed vehicles and t heft t han t o wor k, f ur t her t ight car , dr iving m anagem ent business f or malit ies r eview pr ocedur es. . . Tr uck driver inf or mation m anagem ent plat f orm . M otor vehicles and t r aff ic police depar tm ents, St ate t r ansport aut hor it y t o f ur t her clar if y the Division of labour , im plem ent ation r esponsibilt y, st r engt hen our colabor at ion and m anagement ogether , r einf orcing t he managem ent of dr ivers on which st r ongly synt hetic war f are and inf or mation war f ar e. 3 st rict ly im plem ent ed. Fr om M ay 1 up, a is im plem ent ed plex r oad and bad weat her dr iving exam , cur rent ly DM V is ur ged cont ract or s part y in t r easur es dr iving school incr eased sim ulat ion Highway, and cont inuous ur gent det ours, and snow days, and wet sliding r oad, and bur st sit uat ion disposal, subj ect s I I field t o dr iving exam pr oject, is expected 摘 要 數(shù)據(jù)采集與監(jiān)視控制（ SCADA）系統(tǒng)，是以計(jì)算機(jī)為基礎(chǔ)的生產(chǎn)過 程監(jiān)控與調(diào)度自動(dòng)化系統(tǒng)。 SCADA 系統(tǒng)的監(jiān)控中心和遠(yuǎn)動(dòng)終端（ RTU）需要進(jìn)行數(shù)據(jù)傳輸和信息交換， CAN 總線作為國(guó)際標(biāo)準(zhǔn)現(xiàn)場(chǎng)總線之一 ，并且逐漸占據(jù)總線領(lǐng)導(dǎo)地位 ，由于具有可靠性高、成本低、容易實(shí)現(xiàn)、協(xié)議完全透明、可擴(kuò)展性強(qiáng)、組建 系統(tǒng)非常靈活等優(yōu)點(diǎn)，在現(xiàn)場(chǎng)總線的實(shí)際工程應(yīng)用中占據(jù)了較大的份額 ，并且 CAN 總線已經(jīng)廣泛應(yīng)用于汽車電子、工業(yè)控制、小區(qū)智能監(jiān)控等領(lǐng)域。利用 CAN 接口可以向 CAN 總線接收 /發(fā)送數(shù)據(jù)，實(shí)現(xiàn)對(duì) CAN 智能節(jié)點(diǎn)的監(jiān)測(cè)與控制。 iCAN 系列功能模塊具有 CANbus 通信接口，符合 協(xié)議規(guī)范。 iCAN功能模塊用在基于 CAN 總線的 DCS/SCADA 中，采集工業(yè)現(xiàn)場(chǎng)的信號(hào)并傳送到主機(jī)或者控制遠(yuǎn) 端設(shè)備，實(shí)現(xiàn)對(duì)數(shù)據(jù)的發(fā)送和接收。 本文通過 iCAN 實(shí)驗(yàn)教學(xué)平臺(tái)，對(duì) CAN 現(xiàn)場(chǎng)總線網(wǎng)絡(luò)的構(gòu)成和通信協(xié)議進(jìn)行分析研究，根據(jù) CAN 總線的技術(shù)規(guī)范和相關(guān)協(xié)議，并結(jié)合設(shè)計(jì)系統(tǒng)的要求制定了基于 CAN總線網(wǎng)絡(luò)通信協(xié)議，該通信協(xié)議采用標(biāo)準(zhǔn)幀格式；基于 iCAN 實(shí)驗(yàn)教學(xué)平臺(tái)，研究了單節(jié)點(diǎn)數(shù)據(jù)自發(fā)自收和雙方數(shù)據(jù)收發(fā)的通信實(shí)驗(yàn)，并實(shí)現(xiàn)其通訊的功能；為了使 CAN 系統(tǒng)更好地為客戶和技術(shù)人員所用，增強(qiáng)其可用性，本文將計(jì)算機(jī) PC 作為主節(jié)點(diǎn)，選用數(shù)字量與模擬量輸入輸出模塊，開發(fā)了基于VC++上位機(jī)節(jié)點(diǎn)界面控制 程序，該界面人機(jī)交互能力強(qiáng)，方便用戶對(duì)底層運(yùn)行設(shè)備的監(jiān)測(cè)與控制。 總之，本文提出的 iCAN 現(xiàn)場(chǎng)總線控制網(wǎng)絡(luò)功能完備，可以根據(jù)實(shí)際的控制功能需要選用相應(yīng)的執(zhí)行器件來進(jìn)行擴(kuò)展，同時(shí)兼容性強(qiáng)、實(shí)時(shí)性好、抗干擾能力強(qiáng)以及通信靈活。利用該網(wǎng)絡(luò)實(shí)現(xiàn)的基于 CAN 總線的測(cè)控網(wǎng)絡(luò)既適用于數(shù)據(jù)采集，又適用于控制場(chǎng)合，可方便的構(gòu)成現(xiàn)場(chǎng)總線多主從分散型測(cè)控網(wǎng)絡(luò)系統(tǒng)。 關(guān)鍵詞： CAN 總線 遠(yuǎn)程監(jiān)測(cè)與控制 MFC 主節(jié)點(diǎn)程序 通信協(xié)議 iCAN 模塊 西南交通大學(xué)本科 畢業(yè)設(shè)計(jì) (論文 ) 第 V 頁 Abstract Supervisory Control And Data Acquisition (SCADA) system is a puterbased production process monitoring and automatic dispatching system. The supervisory center and Remote Terminal Unit (RTU) of SCADA system need for data transfer and information exchange. CANbus is recognized to be one of the most developmental Field bus in the world and is being the leader Pattern. With the features of high reliability, low cost， easy realization， thorough transparency protocol, strong expansibility and flexibility of system setting up, it has occupied the leading position in the market and is widely used in auto motive electron industry control， and intellectualized munity and so on. CAN interface can be used to the CAN bus to receive/send data to monitor and control the CAN intelligent node. iCAN series of modules according with protocol norm possess CANbus munication interface. iCAN function module is used in the DCS / SCADA based on CAN bus, collecting the signal of industrial scene and sending it to the host or remote control equipment to achieve the function of sending and receiving data. Through the iCAN experimental teaching platform， the paper analyses the structure of the CANbus work of scene and the munication protocol. Then according to the requiring of the system design,the author constituted the munication protocol of CAN bus which is based on application layer─a standard frame format。 Basing on the iCAN experimental teaching platform, the paper analyses the data munication experiment that the data of single node to send and receive by itself and the two sides to send and receive, and achieved their munication functions。In order to make CAN system better used for the customers and the technical staff and enhance its availability, the author chooses digital and analog input and output module and sees the PC as the main node, and then empolders the control procedures based on VC++ which is better in humanputer interaction capability, more convenience to monitor and control the bottom equipments. In short, the iCAN Fieldbus work in this paper owns a fully functional control evaluat ion of scient if ic developm ent . Nat ur e securit y t ype nat ur e securit y is t o m aint enance people of healt h value f or t ar get, t hr ough st r engt hening securit y based m anagement, and r isk m anagement, and equipm ent m anagem ent and t echnology super vision, ensur e pr oduction in t he people, and r eal, and syst em , and system, elem ent s secur it y r eliable, and har m ony unif ied, f ul cont r ol var ious against f act ors, achieved t hought no slack, and m anagem ent no em pt y docum ent , and equipm ent no hidden, and system no blocked, and unit zer o non st oped. Qualit y and ef f iciencyqualit y benefit is t o adher e t o t he ent erprise sur vi al, pr of it and developm ent business t r ut h, adher e t o t he all act ivit y is econom ic activit y, all cost s can be cont r oled, m oney should not be wast ed m anagement philosophy, m anagement analysis, t o i