Izici zebhasi le-CAN:
1. Ibhasi lenkundla yezinga lezimboni elisezingeni lomhlaba, ukuhanjiswa okuthembekile, isikhathi sangempela esiphezulu;
2. Ibanga elide lokudlulisela (kufika ku-10km), izinga lokudlulisela okusheshayo (kufika ku-1MHz bps);
3. Ibhasi elilodwa lingaxhuma kufika ku-110 nodes, futhi inani lama-node linganwetshwa kalula;
4. Isakhiwo esiningi, isimo esilinganayo sawo wonke ama-node, inethiwekhi yesifunda elula, ukusetshenziswa kwamabhasi aphezulu;
5. Ubuchwepheshe bokulamula bamabhasi besikhathi sangempela obuphezulu, okungabhubhisi, akukho ukubambezeleka kwama-node abaluleke kakhulu;
6. I-NOde ye-CAN engalungile izovala ngokuzenzakalelayo futhi inqamule ukuxhumana nebhasi, ngaphandle kokuphazamisa ukuxhumana kwebhasi;
7. Umlayezo unohlaka olufushane futhi unokuhlolwa kwezingxenyekazi zekhompuyutha ze-CRC, namathuba amancane okuthikamezeka kanye nezinga lephutha ledatha eliphansi kakhulu;
8. Thola ngokuzenzakalelayo ukuthi umlayezo uthunyelwe ngempumelelo yini, futhi i-hardware ingaphinde idlulise ngokuzenzakalelayo, ngokuthembeka okuphezulu kokudlulisela;
9. Umsebenzi wokuhlunga umlayezo wezingxenyekazi zekhompuyutha ungathola kuphela ulwazi oludingekayo, unciphise umthwalo we-CPU, futhi wenze ukulungiselelwa kwesofthiwe kube lula;
10. Ipheya elisontekile elivamile, intambo ye-coaxial noma i-fiber optical ingasetshenziswa njengemidiya yokuxhumana;
11. Isistimu yebhasi ye-CAN inesakhiwo esilula nokusebenza kwezindleko eziphezulu.
Izingxenye ze-RS485
1. Izici zikagesi ze-RS485: i-logic "1" imelwe ngu+(2-6) V umehluko wevolthi phakathi kwemigqa emibili;I-Logic "0" imelwe umehluko we-voltage phakathi kwemigqa emibili njengokuthi - (2-6) V. Uma izinga lesignali yesixhumi esibonakalayo liphansi kune-RS-232-C, akulula ukulimaza i-chip yesekethe yesixhumi esibonakalayo, futhi leli zinga lihambisana nezinga le-TTL, elingenza kube lula ukuxhumana nesekethe ye-TTL;
2. Izinga eliphezulu lokudluliswa kwedatha lika-RS485 ngu-10Mbps;
3. Isixhumi esibonakalayo se-RS485 siyinhlanganisela yomshayeli olinganiselayo nomamukeli ohlukile, okuthuthukisa ikhono lokumelana nokuphazamiseka kwemodi evamile, okungukuthi, ukuphazamiseka okuhle komsindo;
4. Ibanga eliphakeme lebanga lokudlulisa inani elijwayelekile lesixhumi esibonakalayo se-RS485 lingamafidi angu-4000, elingafinyelela kumamitha angu-3000.Ngaphezu kwalokho, i-transceiver eyodwa kuphela evunyelwe ukuxhunywa ku-RS-232-C interface ebhasini, okungukuthi, umthamo wesiteshi esisodwa.I-interface ye-RS-485 ivumela kufika kuma-transceiver angu-128 ukuthi axhunywe ebhasini.Okusho ukuthi, inamandla eziteshi eziningi, ngakho abasebenzisi bangasebenzisa isixhumi esibonakalayo esisodwa se-RS-485 ukuze basungule kalula inethiwekhi yedivayisi.Nokho, i-transmitter eyodwa kuphela engadlulisa ebhasini i-RS-485 nganoma yisiphi isikhathi;
5. I-RS485 interface iyisixhumi esibonakalayo esithandwayo ngenxa yokungazweli kahle komsindo, ibanga elide lokudlulisela kanye nekhono leziteshi eziningi.;
6. Ngenxa yokuthi inethiwekhi yohhafu ye-duplex eyakhiwe ukuxhumana kwe-RS485 ngokuvamile idinga izintambo ezimbili kuphela, izixhumanisi ze-RS485 zithunyelwa ngababili abasontekile abavikelekile.
Umehluko phakathi kwebhasi le-CAN ne-RS485:
1. Isivinini nebanga: Ibanga eliphakathi kwe-CAN ne-RS485 elidluliswa ngesivinini esikhulu se-1Mbit/S alikho ngaphezu kuka-100M, okungashiwo ukuthi kuyafana ngesivinini esikhulu.Nokho, ngesivinini esiphansi, lapho i-CAN ingu-5Kbit/S, ibanga lingafinyelela ku-10KM, futhi ngesivinini esiphansi kakhulu esingu-485, ingafinyelela cishe ku-1219m (akukho relay).Kungabonakala ukuthi i-CAN inezinzuzo eziphelele ekudluliseleni ibanga elide;
2. Ukusetshenziswa kwebhasi: I-RS485 iyisakhiwo sesigqila esiyinhloko esisodwa, okungukuthi, kungaba khona inkosi eyodwa kuphela ebhasini, futhi ukuxhumana kuqaliswa yiyo.Ayiwukhiphi umyalo, futhi amanodi alandelayo awakwazi ukuwuthumela, futhi idinga ukuthumela impendulo ngokushesha.Ngemva kokuthola impendulo, umsingathi ubuza inodi elandelayo.Lokhu okokuvikela amanodi amaningi ekuthumeleni idatha ebhasini, okubangela ukudideka kwedatha.Ibhasi le-CAN liyisakhiwo sezigqila eziningi, futhi indawo ngayinye inesilawuli se-CAN.Lapho amanodi amaningi ethumela, azolamula ngokuzenzakalelayo ngenombolo kamazisi ethunyelwe, ukuze idatha yebhasi ibe yinhle futhi ibe yinhlekele.Ngemva kokuthumela i-node eyodwa, enye i-node ingathola ukuthi ibhasi likhululekile futhi ilithumele ngokushesha, okugcina umbuzo womsingathi, kuthuthukisa izinga lokusebenzisa ibhasi, futhi kuthuthukise ukushesha.Ngakho-ke, ibhasi le-CAN noma amanye amabhasi afanayo asetshenziswa ezinhlelweni ezinezidingo ezisebenzayo ezifana nezimoto;
3. Indlela yokuthola amaphutha: I-RS485 icacisa kuphela isendlalelo esibonakalayo, kodwa hhayi isendlalelo sesixhumanisi sedatha, ngakho ayikwazi ukuhlonza amaphutha ngaphandle uma kukhona amasekhethi amafushane namanye amaphutha aphathekayo.Ngale ndlela, kulula ukubhubhisa i-node futhi uthumele idatha ebhasini ngokuphelelwa yithemba (ukuthumela i-1 njalo), okuzokhubaza ibhasi lonke.Ngakho-ke, uma indawo ye-RS485 ihluleka, inethiwekhi yebhasi izovala ucingo.Ibhasi le-CAN linesilawuli se-CAN, esikwazi ukubona noma yiliphi iphutha lebhasi.Uma iphutha lidlula u-128, lizokhiywa ngokuzenzakalelayo.Vikela ibhasi.Uma amanye ama-node noma amaphutha awo etholwa, amafreyimu amaphutha azothunyelwa ebhasini ukuze akhumbuze amanye ama-node ukuthi idatha ayilungile.Qaphela, wonke umuntu.Ngale ndlela, uma uhlelo lwe-node CPU lwebhasi le-CAN lubaleka, isilawuli salo sizokhiya ngokuzenzakalelayo futhi sivikele ibhasi.Ngakho-ke, kunethiwekhi enezidingo eziphezulu zokuphepha, i-CAN inamandla kakhulu;
4. Intengo kanye nezindleko zokuqeqesha: Intengo yemishini ye-CAN icishe iphindwe kabili kune-485. Ngale ndlela, ukuxhumana kwe-485 kulula kakhulu ngokuya ngesoftware.Inqobo nje uma uqonda ukuxhumana kwe-serial, ungahlela.Nakuba i-CAN idinga unjiniyela ophansi ukuthi aqonde ungqimba oluyinkimbinkimbi lwe-CAN, kanye nesofthiwe yekhompyutha ephezulu nayo idinga ukuqonda umthetho olandelwayo we-CAN.Kungashiwo ukuthi izindleko zokuqeqesha ziphezulu;
5. Ibhasi le-CAN lixhunywe ebhasini elingokoqobo nge-CANH kanye ne-CANL yamatheminali amabili okukhiphayo we-CAN yesilawuli esibonakalayo se-chip 82C250.Itheminali ye-CANH ingaba sezingeni eliphezulu kuphela noma isimo esimisiwe, futhi itheminali ye-CANL ingaba sezingeni eliphansi kuphela noma isimo esimisiwe.Lokhu kuqinisekisa ukuthi, njengakunethiwekhi ye-RS-485, lapho uhlelo lunamaphutha futhi ama-node amaningi athumela idatha ebhasini ngesikhathi esifanayo, ibhasi lizobe lihamba kancane, ngaleyo ndlela lilimaza amanye ama-node.Ukwengeza, i-CAN node inomsebenzi wokuvala ngokuzenzakalelayo okukhiphayo lapho iphutha likhulu, ukuze ukusebenza kwamanye ama-node ebhasi kungeke kuthinteke, ukuze kuqinisekiswe ukuthi ngeke kube nezinkinga kunethiwekhi, futhi ibhasi lizoba sesimweni "sokufa" ngenxa yezinkinga zamanodi ngamanye;
6. I-CAN ine-protocol yokuxhumana ephelele, engenziwa yi-CAN isilawuli chip kanye ne-chip yayo yokuxhumana, ngaleyo ndlela inciphise kakhulu ubunzima bokuthuthukiswa kwesistimu nokunciphisa umjikelezo wokuthuthukiswa, ongenakuqhathaniswa ne-RS-485 kuphela nge-protocol kagesi.
I-Shenzhen Zhongling Technology Co., Ltd., selokhu yasungulwa ngo-2013, izibophezele embonini yamarobhothi angamasondo, ithuthukisa, ikhiqiza futhi idayise ama-servo motors kanye nabashayeli abasebenza ngokuzinzile.Abashayeli bayo bezimoto ezisebenza kahle kakhulu ze-servo hub, i-ZLAC8015, i-ZLAC8015D ne-ZLAC8030L, bamukela ukuxhumana kwamabhasi e-CAN/RS485, ngokulandelanayo basekela i-CiA301 kanye ne-CiA402 iphrothokholi engaphansi yephrothokholi ye-CANopen/modbus RTU, futhi ingakhuphukela kumadivayisi ayi-16;Isekela ukulawula isikhundla, ukulawula isivinini, ukulawula i-torque nezinye izindlela zokusebenza, futhi ifanele amarobhothi ngezikhathi ezihlukahlukene, ikhuthaza kakhulu ukuthuthukiswa kwemboni yamarobhothi.
Isikhathi sokuthumela: Nov-29-2022