Ibiranga itandukaniro hagati ya CAN Bus na RS485

URASHOBORA bisi:

1. Urwego mpuzamahanga rusanzwe rwinganda bus, itumanaho ryizewe, igihe nyacyo;

2. Intera ndende yoherejwe (kugeza 10km), umuvuduko wo kohereza byihuse (kugeza kuri 1MHz bps);

3. Bisi imwe irashobora guhuza imitwe igera kuri 110, kandi umubare wumutwe urashobora kwagurwa byoroshye;

4. Imiterere myinshi yububiko, imiterere ingana kuri node zose, guhuza uturere byoroshye, gukoresha bisi nyinshi;

5. Igihe kinini-nyacyo, tekinoroji ya kamarampaka ya bisi idasenya, nta gutinda kumutwe hamwe nibyingenzi;

6. CAN node itari yo izahita ifunga kandi ihagarike guhuza na bisi, bitagize ingaruka ku itumanaho rya bisi;

7. Ubutumwa bufite imiterere ngufi kandi ifite ibyuma bigenzura CRC, hamwe nibishoboka bike byo kwivanga nigipimo gito cyamakosa;

8. Menya mu buryo bwikora niba ubutumwa bwoherejwe neza, kandi ibyuma birashobora guhita bisubiramo, hamwe no kwizerwa kwinshi;

9. Igikorwa cyo gushungura ubutumwa bwibyuma birashobora kwakira gusa amakuru akenewe, kugabanya umutwaro wa CPU, no koroshya gutegura software;

10. Byombi bigoretse, umugozi wa coaxial cyangwa fibre optique irashobora gukoreshwa nkitangazamakuru ryitumanaho;

11. Sisitemu ya bisi ya CAN ifite imiterere yoroshye kandi ikora neza.

 

Ibiranga RS485:

1. Ibiranga amashanyarazi ya RS485: logique "1" igereranwa na + (2-6) V itandukaniro rya voltage hagati y'imirongo ibiri;Logic "0" igereranwa na voltage itandukanya imirongo ibiri nka - (2-6) V. Niba urwego rwerekana ibimenyetso ruri munsi ya RS-232-C, ntabwo byoroshye kwangiza chip yumuzunguruko, kandi uru rwego ruhujwe nurwego rwa TTL, rushobora koroshya guhuza na TTL umuzenguruko;

2. Igipimo ntarengwa cyo kohereza amakuru ya RS485 ni 10Mbps;

3. Imigaragarire ya RS485 ni ihuriro ryumushoferi uringaniye hamwe niyakira itandukanye, byongera ubushobozi bwo kurwanya uburyo busanzwe bwo kwivanga, ni ukuvuga urusaku rwiza;

4. Intera ntarengwa yohereza intera isanzwe ya RS485 ni metero 4000, ishobora rwose kugera kuri metero 3000.Mubyongeyeho, transceiver imwe yonyine yemerewe guhuzwa na RS-232-C kuri bisi, ni ukuvuga ubushobozi bwa sitasiyo imwe.Imigaragarire ya RS-485 yemerera transcevers zigera kuri 128 guhuzwa muri bisi.Nukuvuga ko, ifite ubushobozi bwa sitasiyo nyinshi, kuburyo abakoresha bashobora gukoresha interineti imwe RS-485 kugirango bashireho umuyoboro wibikoresho byoroshye.Nyamara, icyuma kimwe gusa gishobora kohereza kuri bisi RS-485 igihe icyo aricyo cyose;

5. Imigaragarire ya RS485 niyo interineti ikunzwe kubera ubudahangarwa bwayo bw urusaku, intera ndende hamwe nubushobozi bwa sitasiyo nyinshi.;

6. Kuberako igice cya duplex umuyoboro ugizwe na RS485 intera isanzwe ikenera insinga ebyiri gusa, RS485 intera yoherejwe no gukingirwa gukingiwe.

Itandukaniro hagati ya bisi ya CAN na RS485:

1. Umuvuduko nintera: Intera iri hagati ya CAN na RS485 yandujwe kumuvuduko mwinshi wa 1Mbit / S ntabwo irenga 100M, bishobora kuvugwa ko bisa mumuvuduko mwinshi.Nyamara, ku muvuduko muke, iyo CAN ari 5Kbit / S, intera irashobora kugera kuri 10KM, naho ku muvuduko muto wa 485, irashobora kugera kuri 1219m gusa (nta relay).Birashobora kugaragara ko CAN ifite ibyiza byuzuye mugukwirakwiza intera ndende;

2. Gukoresha bisi: RS485 nuburyo bumwe bwumucakara wububiko, ni ukuvuga ko hashobora kubaho umutware umwe gusa muri bisi, kandi itumanaho ryatangijwe naryo.Ntabwo itanga itegeko, kandi imitwe ikurikira ntishobora kohereza, kandi igomba kohereza igisubizo ako kanya.Nyuma yo kubona igisubizo, uwakiriye abaza node ikurikira.Ibi ni ukurinda imitwe myinshi kohereza amakuru muri bisi, bigatera urujijo.Bisi ya CAN ni umutware wubucakara bwinshi, kandi buri node ifite umugenzuzi wa CAN.Iyo imitwe myinshi yohereje, izahita ikemura numero y'irangamuntu yoherejwe, kugirango amakuru ya bisi abe meza kandi arangaye.Nyuma yumutwe umwe wohereje, urundi rushobora kumenya ko bisi ari ubuntu kandi ikohereza ako kanya, ibyo bikiza ikibazo cyabakiriye, bizamura igipimo cya bisi, kandi byongera umuvuduko.Kubwibyo, CAN bus cyangwa izindi bus zisa zikoreshwa muri sisitemu ifite ibisabwa bifatika nkibinyabiziga;

3. Uburyo bwo gutahura amakosa: RS485 yerekana gusa urwego rwumubiri, ariko ntiruhuza amakuru, ntabwo rero rushobora kumenya amakosa keretse hariho imirongo migufi nandi makosa yumubiri.Muri ubu buryo, biroroshye gusenya node no kohereza amakuru muri bisi cyane (kohereza 1 igihe cyose), bizahagarika bisi yose.Kubwibyo, niba RS485 node yananiwe, umuyoboro wa bisi uzamanikwa.Bisi ya CAN ifite umugenzuzi wa CAN, ishobora kumenya amakosa yose ya bisi.Niba ikosa rirenze 128, rizahita rifunga.Rinda bisi.Niba izindi node cyangwa amakosa yabo bwite yamenyekanye, amakadiri yamakosa azoherezwa muri bisi kugirango yibutse izindi node ko amakuru atariyo.Witondere, buri wese.Muri ubu buryo, iyo porogaramu ya CPU ya bisi ya CAN ihunze, umugenzuzi wayo azahita afunga kandi arinde bus.Kubwibyo, murusobe hamwe nibisabwa byumutekano mwinshi, CAN irakomeye cyane;

4. Igiciro n'amahugurwa: Igiciro cyibikoresho bya CAN bikubye kabiri inshuro 485. Muri ubu buryo, itumanaho 485 ryoroshye cyane mubijyanye na software.Igihe cyose wunvise itumanaho rikurikirana, urashobora gahunda.Mugihe CAN isaba injeniyeri yo hasi kugirango yumve urwego rugoye rwa CAN, na software yo hejuru ya mudasobwa nayo ikeneye gusobanukirwa protocole ya CAN.Birashobora kuvugwa ko ikiguzi cyamahugurwa ari kinini;

5. Bisi ya CAN ihujwe na bisi ifatika inyuze muri CANH na CANL ya terambere ebyiri zisohoka za CAN mugenzuzi wa chip 82C250.Ikirangantego cya CANH gishobora kuba gusa murwego rwohejuru cyangwa rwahagaritswe, kandi itumanaho rya CANL rishobora kuba murwego rwo hasi cyangwa rwahagaritswe.Ibi byemeza ko, nkuko biri mumurongo wa RS-485, mugihe sisitemu ifite amakosa kandi imitwe myinshi yohereza amakuru muri bisi icyarimwe, bisi izaba izunguruka mugihe gito, bityo ikangiza imitwe imwe.Mubyongeyeho, CAN node ifite imikorere yo guhita ifunga ibisohoka mugihe ikosa rikomeye, kugirango imikorere yizindi node kuri bisi itazagira ingaruka, kugirango harebwe ko ntakibazo kizaba murusobe, kandi bisi izaba iri muri "deadlock" kubera ibibazo byumutwe umwe;

6. CAN ifite protocole itumanaho itunganijwe neza, ishobora kugerwaho na chip ya CAN mugenzuzi hamwe na chip yayo yimbere, bityo bikagabanya cyane ingorane ziterambere rya sisitemu no kugabanya uruzinduko rwiterambere, ibyo bikaba bitagereranywa na RS-485 gusa hamwe na protocole yamashanyarazi.

 

Shenzhen Zhongling Technology Co., Ltd., kuva yashingwa mu 2013, yiyemeje gukora inganda z’ibimuga, guteza imbere, gukora no kugurisha ibinyabiziga bya moteri ya servo moteri n’abashoferi bafite imikorere ihamye.Abashoferi ba servo hub ikora cyane, ZLAC8015, ZLAC8015D na ZLAC8030L, bemeza itumanaho rya bisi ya CAN / RS485, bashyigikira CiA301 na CiA402 protocole ya protocole ya CANopen protocole / modbus RTU protocole, kandi irashobora gushiraho ibikoresho bigera kuri 16;Ifasha kugenzura imyanya, kugenzura umuvuduko, kugenzura umuriro nubundi buryo bwo gukora, kandi ikwiranye na robo mubihe bitandukanye, biteza imbere cyane iterambere ryinganda za robo.