【正文】 ansact ion costs. Har m onious developm ent of har m onious developm ent is t o const r uct a f oreign envir onm ent f or developm ent. XI NG r ef er s t o t he int er nal securit y f ir m and int er nal m anagem ent of t he int er nal m anagem ent m easur es ar e eff ect ive, har m onious. For eign cur r ency m eans Ent er pr ise coordinat ing development of hom eopat hy, well, get along wit h t he neighbor s bett er. ( B) XX 2021 five ent er pr ises building int r insic saf ety power pany goals ar e: unplanned out age 0 t im es. Class of disor der s 0, 0 is equivalent f or ced outage r at e. No per sonal inj ur y accident , m ater ial and equipm ent acc idents do not occur , no f ir e, no envir onm ental polut ion accident . Enterprise integrated to achieve zero cases of violation, zero accidents, zero. Quality goal is: when generating capacity ≥ 7. 5 bilon kilowat t , sales of over 7. 1 bilon kWh, t ot al pr of it s of ≥ 306. 6 milon Yuan, . . . BFS+、 PI、 MI S、 SCM I nf orm at ion systems inf r ast ruct ur e, f uly int egr ated inf or mat ion syst em t o r ealize inf or m at ion r esour ces shar ing。 I I is est ablished m ot or vehicle t est r egulat or y plat f orm , achieved m ot or vehicle t est f ul pr ocess video, and dat a r emot e r egulat ory。 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 總線作為國際標(biāo)準(zhǔn)現(xiàn)場總線之一 ，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。 本文通過 iCAN 實(shí)驗(yàn)教學(xué)平臺(tái)，對 CAN 現(xiàn)場總線網(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)，方便用戶對底層運(yùn)行設(shè)備的監(jiān)測與控制。 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。利用該網(wǎng)絡(luò)實(shí)現(xiàn)的基于 CAN 總線的測控網(wǎng)絡(luò)既適用于數(shù)據(jù)采集，又適用于控制場合，可方便的構(gòu)成現(xiàn)場總線多主從分散型測控網(wǎng)絡(luò)系統(tǒng)。 iCAN 系列功能模塊具有 CANbus 通信接口，符合 協(xié)議規(guī)范。 t his year J anuar y J une, vehicles m anagem ent sect ion and license ar chives m anagem ent sect ion t ot al accept ed t he m ot or vehicle r egist r ation business 42, 543 car t im es, which r egist er ed r egist r at ion 6, 905 car t im es, and t r ansf er r egistr ation 3, 592 car t im es, and change r egistr ation 1033 car t im es, and m or t gage r egistr ation 696 car t im es, and cancellat ion r egistr ation 187 car t im es, and int o business 980 car t im es, and Ar chives cor r ections 81 pieces t im es, and issued t est qualif ied logo 25, 429 car t im es, and ot her vehicles business 3, 640 car t im es。 t o im prove t he day to day oper ation and m aint enance operat ion r ecor d of prom oting causes and t r ansf er syst em。 (5 周 ) 第五部分 調(diào)試、測試程序，整理文檔 資料，對關(guān)鍵程序行的注釋。 西南交通大學(xué)本科 畢業(yè)設(shè)計(jì) (論文 ) 第 III頁 論文各部分內(nèi)容及時(shí)間分配：（共 15 周） 第一部分 查詢參考文獻(xiàn)，資料，翻譯外文資料 。 （ 3） 基于 CAN 總線技術(shù)，選用合適的 iCAN 功能模塊，構(gòu)建 CAN 現(xiàn)場總線系統(tǒng)。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CAN 智能節(jié)點(diǎn)的監(jiān)測與控制。 t hr ee is st r ict ly m ot or vehicle ident if icat ion m anagem ent, equipped wit h unif ied of ident if icat ion equipm ent and t ool, using m obile ident if icat ion Term inal, and law enf or cem ent r ecor ds inst r um ent, t echnol gy ident if ication m eans. As t o 20XX years J une 20 st at ewide m ot or vehicle keep volum e f or 567, 408 car, and last year ear lier t han gr owt h 75, 814 car, gr owt h 13. 36%。 t o expa nd t he br eadt h and depth of t he por tal system , inf or mation syst em of Enter prise M anagement Assi t ant r ole t o play。 I I is est ablished m ot or vehicle t est r egulat or y plat f orm , achieved m ot or vehicle t est f ul pr ocess video, and dat a r emot e r egulat ory。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 is k 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 agains t 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 im pr ove m anagement qualit y, im pr ove cost cont r ol capacit y and m arket pet it iveness. I nnovat ion of science and t echnol gyscience and t echnology innovation is t o play t he r ole of science and t echnol gy as t he pr im ar y pr oductive f or ce, active use of new t echnol gies, new m at er ials, new pr ocesses, new equipm ent , incr ease invest m ent in sc ience and t echnol gy, st r engt hening scient if ic and t echnol gical t r aining, speeding up t r ansf orm ing scientif ic and t echnol gical achievem ents, f or ming a num ber of pr opriet ar y t echnology, enhancing cor e petit i