Hamba emachwebeni kunoma iyiphi i-marina yesimanje futhi uzothola izikebhe lapho i-chartplotter ikhombisa khona idatha yenjini, i-autopilot ifunda inzwa yomoya, futhi ibhange lebhethri libika isimo sayo sokushaja esibonisini se-helm - kuyo yonke ikhebula elilodwa elihamba phakathi kwesikebhe. Ubuchwepheshe ngemuva kwalokho kuhlanganiswa yi-NMEA 2000®, inqubo yokuxhumana esiye yaba ulimi oluvamile lwe-electronics zasolwandle.
Lo mhlahlandlela uchaza ukuthi iphrothokholi ye-NMEA 2000 isebenza kanjani ngempela: inethiwekhi esebenza kuyo, uhlelo lwemiyalezo oluyisebenzisayo, ukuthi amadivayisi ajoyina kanjani inethiwekhi, nokuthi yini edingekayo ukuze uhlelo lwebhethri le-lithium luhlanganyele. Kungakhathaliseki ukuthi uhlela ukulungiswa kwe-elekthronikhi noma ucacisa izidingo zokuxhumana zephrojekthi yebhethri le-OEM, ukuqonda iphrothokholi kuyisinyathelo sokuqala esiya ohlelweni lapho konke kukhuluma nakho konke okunye.
Kuyini i-NMEA 2000?
I-NMEA 2000 iyiphrothokholi yokuxhumana ejwayelekile evumela amadivayisi kagesi asemanzini — izibonisi, izinzwa, izinjini, kanye nezinhlelo zebhethri — ukwabelana ngedatha kunethiwekhi eyodwa. Yakhiwe yi-National Marine Electronics Association, yakhelwe kubuchwepheshe be-CAN bus (Controller Area Network) futhi ivumela imishini evela kubakhiqizi abahlukene ukuthi ishintshane ngolwazi ngaphandle kokuxhuma ngokwezifiso phakathi kwamadivayisi amabili.
I-NMEA 2000® iwuphawu lokuhweba olubhalisiwe lwe-National Marine Electronics Association (NMEA), inhlangano ese-US ethuthukisa futhi igcine amazinga kagesi asemanzini. Le phrothokholi ichaza inethiwekhi engabizi kakhulu, eqondiswa kabili, edlulisela izinto eziningi, neyamukela izinto eziningi: noma iyiphi idivayisi eqinisekisiwe ingathumela futhi yamukele idatha, inethiwekhi iyazilungiselela, futhi akukho mlawuli ophakathi oncike kukho konke.
Lelo phuzu lokugcina libaluleke kakhulu kunalokho elikuzwakalayo. Kunethiwekhi ye-NMEA 2000, uma idivayisi eyodwa ihluleka, okunye kuyaqhubeka nokuxhumana. Qhathanisa lokho nezintambo ezindala ze-point-to-point, lapho ithuluzi elilodwa livame ukuhlala phakathi kwechungechunge lwedatha — futhi lapho lelo thuluzi lihluleka, idivayisi ngayinye kuye ngedatha yayo yaba mnyama.
Empeleni, abanikazi bezikebhe nabakhi basebenzisa i-NMEA 2000 ukufaka idatha yokuzulazula, amapharamitha enjini, amazinga ethangi, izinzwa zemvelo, kanye - ngokuya - nedatha yebhethri kumgogodla owodwa owabiwe, obonakala kunoma yisiphi isibonisi esihambisanayo ebhodini.
I-NMEA 2000 vs NMEA 0183: Yini Eshintshile
Ngaphambi kwe-NMEA 2000, ama-electronics asemanzini akhuluma nge-NMEA 0183, inqubo elandelanayo eyethulwa ekuqaleni kwawo-1980. I-NMEA 0183 isatholakala emikhunjini eminingi, futhi ukuqonda umehluko kuchaza ukuthi kungani imboni yaqhubeka.
I-NMEA 0183 iyiphrothokholi yochungechunge oluqondile. Idivayisi eyodwa — "isikhulumi" — idlulisela imisho yombhalo ye-ASCII kuma-baud angu-4,800 (uhlobo olusheshayo lwama-baud angu-38,400 lwanezelwa kamuva, ikakhulukazi kudatha yokulandelela izitsha ze-AIS) "kumlaleli oyedwa noma ngaphezulu." Umlaleli angathola kuphela kumuntu okhulumayo oyedwa, ngakho ukuxhuma izinsimbi eziningi kusho ama-multiplexers, ama-buffers, kanye nemidwebo yocingo eyaba buhlungu kakhulu ngedivayisi ngayinye eyengeziwe.
I-NMEA 2000 ithathe indawo yalowo modeli ngenethiwekhi yangempela:
| Isici | I-NMEA 0183 | I-NMEA 2000 |
|---|---|---|
| Ukwakhiwa kwezakhiwo | Umuntu okhuluma yedwa → abalaleli | Inethiwekhi yokuphonsa okuningi, wonke amadivayisi ayakhuluma futhi ayalalela |
| Isendlalelo esingokoqobo | I-serial (isignali yesitayela se-RS-422/RS-232) | Ibhasi le-CAN, i-differential twisted pair |
| Isivinini | Ama-baud angu-4,800 (uhlobo lwesivinini esikhulu olungama-38,400) | 250 kbit/s |
| Ifomethi yedatha | Imisho yombhalo ye-ASCII (izinhlamvu ezingu-82 ubuningi) | Ozimele ababili abancane |
| Izinga lomhlaba wonke | I-IEC 61162-1 | I-IEC 61162-3 |
| Ukungeza idivayisi | Ukusebenza okusha kwezintambo, kungenzeka kube yi-multiplexer | Beka ikhebula emgogodleni |
| Ukuziphatha kokwehluleka | Ukwehluleka kwesikhulumi kuyaphula uchungechunge | Inethiwekhi iyaqhubeka ngaphandle kwe-node ehlulekile |
Lezi zindinganiso ezimbili azihambisani. Ithuluzi le-NMEA 0183 alikwazi ukujoyina inethiwekhi ye-NMEA 2000 ngqo; ukufakwa okuxubile kudinga idivayisi yesango ehumusha phakathi kwalokhu okubili. Ngokwakhiwa okusha nokulungiswa, i-NMEA 2000 iyisinqumo esizenzakalelayo - yingakho izinhlelo zebhethri ezenzelwe ukusetshenziswa olwandle zidinga kakhulu ukukhuluma ngakho.
Indlela Iphrothokholi Esebenza Ngayo: Ibhasi le-CAN nama-PGN
Ngaphansi kwe-hood, i-NMEA 2000 yakhelwe ku-Controller Area Network (CAN) — ubuchwepheshe obufanayo bamabhasi obufakazelwe amashumi eminyaka ezinhlelweni zezimoto nezezimboni — obusebenza ku-250 kbit/s. Lokho i-NMEA 2000 ekwengezayo ngaphezu kwe-CAN eluhlaza ungqimba lohlelo lokusebenza olujwayelekile oluthonywe kakhulu yi-SAE J1939 (umndeni wephrothokholi yokuxhumana esetshenziswa emalorini nasezimotweni ezisindayo): isilulumagama esabiwe esitshela yonke idivayisi ukuthi ama-byte asentanjeni asho ukuthini ngempela.
Lelo silulumagama lihlelwe ngendlelaIzinombolo Zeqembu Lepharamitha (ama-PGN). I-PGN ngayinye iwuhlobo lomyalezo oluchaziwe: enye i-PGN iphethe indawo ye-GPS, enye iphethe i-RPM yenjini, enye iphethe ukujula kwamanzi. Imilayezo ihamba njengezinhlaka ze-CAN isebenzisa isihlonzi se-29-bit kanye nensimu yedatha ye-8-byte; imilayezo emikhulu ihlukaniswa phakathi kwezinhlaka eziningi futhi ihlanganiswe kabusha yi-receiver. Ngenxa yokuthi yonke idivayisi eqinisekisiwe ihumusha ama-PGN ngendlela efanayo, isibonisi se-Garmin singafunda idatha evela esangweni lenjini ye-Yamaha kanye nenzwa yethangi lesithathu ngaphandle kwanoma yimuphi walabo bakhiqizi abasebenzisana.
Kumasistimu ebhethri, iqembu elithile lama-PGN lenza umsebenzi:
- I-PGN 127508 – Isimo Sebhethri: i-voltage, i-current, kanye ne-temperature yesibonelo sebhethri
- Isimo Esiningiliziwe se-PGN 127506 – DC: isimo secala, isimo sempilo, kanye nesikhathi esisele
- I-PGN 127513 – Isimo Sokucushwa Kwebhethri: ulwazi lwe-voltage, i-chemistry, kanye nomthamo
Izimo ze-alamu nezexwayiso zihamba ngokwehlukana, ngokusebenzisa imiyalezo yesaziso ejwayelekile yenethiwekhi (PGN 126983) — okuyiyona ndlela iphutha lebhethri eliba ngayo isixwayiso esibonakalayo nesizwakalayo esiqondisweni kunokuba kube yifulegi elithule ngaphakathi kwephakethe.
Uma uhlelo lokuphatha ibhethri (i-BMS) noma isango lebhethri lithumela la ma-PGN kunethiwekhi, noma yisiphi isibonisi ebhodini esisekela la ma-PGN singabonisa i-pack voltage, ukudonsa kwamanje, kanye nesimo sokushaja — ngaphandle kokwengeza isikrini esihlukile sokuqapha ibhethri esiqondisweni. Ibhethri ngalinye linikezwa inombolo yesibonelo, okuyiyona ndlela inethiwekhi ehlukanisa ngayo ibhange lendlu nebhethri lokuqala futhi iwabonise ngokwehlukana.
Lolu ngqimba lwe-PGN luyindawo eqondile lapho i-lithium battery electronics ihlangana khona ne-marine electronics, futhi yilapho amaphrojekthi okuhlanganisa ephumelela noma eme khona. I-BMS elinganisa konke kodwa ingathumeli lutho ibeka idatha eqondile endaweni okungekho muntu ongayibona; i-BMS esebenzisa i-PGN yebhethri yenza leyo datha ibe yingxenye yomkhumbi.
Ukwakhiwa Kwenethiwekhi ye-NMEA 2000
Ngokwemvelo, inethiwekhi ye-NMEA 2000 ilandela i-topology elula neqinile — futhi ukuqina kuyisici, ngoba kwenza amanethiwekhi abikezeleke.
[UMFANEKISO WOKUQALA LAPHA — i-topology yenethiwekhi ekhombisa umgogodla, ama-terminator, izintambo zokulahla, namadivayisi afaka i-MFD, isango lenjini, izinzwa, kanye nebhange lebhethri le-lithium eline-BMS. Umbhalo ohlukile: "Umdwebo wenethiwekhi we-NMEA 2000 onesistimu yebhethri exhunywe ngekhebula lokulahla"]
Inethiwekhi yakhiwe ngezinto ezine:
Umgogodlayikhebula eliyinhloko elihamba ngesitsha. Yonke idivayisi ixhuma kuyo; ayikho idivayisi exhuma ngqo kwenye idivayisi.
Ama-resistor okuqedavala izinhlangothi zombili zomgogodla. Ukubonisana kwebhasi le-CAN kudinga ukuqedwa ekugcineni ngakunye kwesiqu ukuze kuvinjelwe ukubonakaliswa kwesignali - i-terminator engekho noma ephindwe kabili iyimbangela evamile yenethiwekhi engaziphathi kahle.
Lahla amakhebulaxhuma idivayisi ngayinye emgogodleni ngokusebenzisa izixhumi ze-T. Indinganiso ichaza ubude obuphezulu kokubili emgogodleni kanye nokwehla ngakunye, okugcina isikhathi sesiginali ngaphakathi kwencazelo njengoba amanethiwekhi ekhula.
Amandla enethiwekhiinikezwa ngaphezu komgogodla uqobo. Ikhebula le-NMEA 2000 liphethe ukuphakelwa kwalo kwamandla kwezixhumanisi zenethiwekhi zamadivayisi axhunyiwe, ahlukile emithwalweni eyinhloko ye-DC yomkhumbi.
Amadivayisi asebenzisa izixhumi ezijwayelekile ezinamaphini ama-5 (ngokuvamile i-Micro-C) kukhebula eligoqekile elivikelwe, esebenzisa isignali yokuhlukanisa ukuze kuvikelwe umsindo — inzuzo ebalulekile endaweni egcwele ama-alternator, ama-inverter, kanye nama-radio transmitters.
Ekufakweni kwebhethri, lolu hlaka lunethonya elilodwa eliwusizo okufanele lihlelwe kusenesikhathi: isikhombimsebenzisi sokuxhumana sebhange lebhethri sidinga indlela yokudonsa ikhebula eya emgogodleni, futhi amanethiwekhi anamabhange amaningi ebhethri adinga izinombolo zawo zesibonelo ezilungiselelwe ukuze ibhange ngalinye libonakale njengomthombo ohlukile ezikrinini.
Yiziphi Amadivayisi Axhuma Kunethiwekhi ye-NMEA 2000
Cishe zonke izinhlobo ze-electronics zasolwandle manje sezithunyelwa ngokuxhumeka kwe-NMEA 2000:
Izibonisi zemisebenzi eminingi (ama-MFD)bangabathengi bedatha yenethiwekhi — ama-chartplotter kanye nezibonisi zezinsimbi ezivela kumikhiqizo emikhulu ye-electronics yasolwandle zifunda ama-PGN bese ziwanikeza opharetha. Emikhumbi eminingi i-MFD yilapho idatha yebhethri igcina ibonwa khona.
Amasango enjiniukuhumusha idatha yenjini eyimfihlo kunethiwekhi, ukubeka i-RPM, ukuhamba kukaphethiloli, kanye nama-alamu enjini kuzibonisi ezifanayo nazo zonke ezinye izinto.
Izinzwa— ukujula, umoya, i-GPS, izinga lokushisa, izinga lethangi, ukugeleza kukaphethiloli — yibo abakhiqizi bedatha yenethiwekhi, ngayinye ithumela isethi yayo ye-PGN.
Ama-Autopilot kanye nemisakazokokubili kusebenzisa idatha yokuzulazula, futhi uma kukhulunywa ngemisakazo ye-VHF ene-DSC (Digital Selective Calling), kusebenzisa idatha ye-GPS yenethiwekhi yezingcingo zokucindezeleka.
Amadivayisi ebhethri nawamandlayizona zigaba ezikhula ngokushesha. Ama-battery monitors, ama-shunt, amamitha wamandla e-DC, kanye nezinhlelo zebhethri le-lithium ezine-electronics ze-BMS ezikwazi ukuxhumana zidlulisela iqembu lebhethri le-PGN elichazwe ngenhla, ziguqula isibonisi se-helm sibe isikrini sokuphatha amandla. Indlela izibonisi zasolwandle ezifunda futhi zihumushe ngayo idatha yebhethri le-lithium iyisihloko esijulile ngokwanele ukuthi sisimboze kumhlahlandlela waso.Indlela Ama-elekthronikhi Asemanzini Afunda Ngayo Idatha Yebhethri Le-Lithium →
Uma uhlola ibhethri le-lithium ngesikebhe, ikhono lokuxhumana lifaneleka ohlwini lokuhlola kanye nezilinganiso zomthamo kanye nokukhishwa - umhlahlandlela wethu wokukhetha ibhethri le-lithium yasolwandle uhlanganisa indlela yokulilinganisa nezinye izici.Umhlahlandlela Wokukhetha Ibhethri Le-Marine Lithium →
Isitifiketi Nokuthobela Imithetho
Esinye isici se-NMEA 2000 esimangaza abathengi abaningi: akuyona inqubo evulekile, noma kunjalo yokusebenzisa. I-NMEA 2000 iyindinganiso enelayisensi, futhi yonke imikhiqizo efunda noma edlulisa idatha ye-NMEA 2000 kudingeka iqinisekiswe ngaphansi kweSivumelwano Selayisensi se-NMEA 2000 (umthombo:I-NMEAUkuhlolwa kwesitifiketi kungenziwa ngumenzi esebenzisa amathuluzi okuqinisekisa e-NMEA noma ngumuntu wesithathu, futhi izimali zelayisensi zezinga zihlukaniswa ngokwemboni.
Isitifiketi sikhona ngesizathu esisebenzayo: yilokho okwenza isithembiso sokusebenzisana "noma iyiphi idivayisi, noma yiluphi uhlobo" sibe ngokoqobo. Idivayisi eqinisekisiwe ikhombisile ukuthi idlulisela imiyalezo eyimpoqo ngendlela efanele, iphendula kahle ezicelweni zokuphathwa kwenethiwekhi, futhi ayiphazamisi ibhasi kubo bonke abanye.
Kwabakhi be-OEM kanye nabahlanganisi bezinhlelo, lokhu kunomphumela wokuhlela. Uma uhlelo lwebhethri olukwazi ukuxhumana lwenzelwe isikebhe, isitifiketi siyisinyathelo esichaziwe endleleni yomkhiqizo - ngezidingo zokuhlolwa kwehadiwe nesofthiwe ezibhaliwe - kunokuba kube yinto ecatshangelwe kamuva. Ubani oqinisekisa ukuthi yini, nokuthi umkhiqizo oqediwe usezingeni lini, umbuzo okufanele uxazululwe ekuqaleni kwephrojekthi. Sihamba ngendlela amaqembu e-OEM avame ukuphatha ngayo ukuhlanganiswa kokuxhumana kanye nendlela yokuqinisekisa kumhlahlandlela wethu wokuhlanganiswa kwe-OEM.Indlela Ama-OEM Ahlanganisa Ngayo Ukuxhumana Kwe-NMEA 2000 →
Izinhlelo zebhethri ze-NMEA 2000 kanye ne-Lithium
Amabhethri e-lithium iron phosphate (LiFePO4) ashintshe lokho izinhlelo zikagesi zasolwandle ezingakwenza — umthamo ongcono ongasetshenziswa, ukushaja okusheshayo, kanye — ngokusebenzisa ama-elekthronikhi okuphatha amabhethri aziphethe — idatha eyengeziwe kakhulu esebhodini. Kodwa leyo datha idala inani kuphela uma ifika kumqhubi, futhi emkhunjini onama-elekthronikhi axhunyiwe kunethiwekhi, indlela eqondile kakhulu eya kumqhubi yinethiwekhi ye-NMEA 2000.
Uhlelo lwebhethri le-lithium luhlanganyela kunethiwekhi nge-BMS yalo noma ngesango lokuxhumana elihumusha idatha ye-BMS ibe yi-PGN yebhethri ejwayelekile. Uma isikunethiwekhi, isimo sokushaja sivela ku-chartplotter, izimo ze-voltage ephansi ziqala ama-alamu esisekelweni kunokuba zithule endaweni yebhethri, futhi amabhange amaningi ebhethri angaqashwa eceleni ngezinombolo zawo zesibonelo.
Kumaphrojekthi ebhethri enziwe ngokwezifiso kanye ne-OEM, izidingo zokuxhumana zifanelwe ukuqina okufanayo nezidingo zikagesi. Imibuzo enquma impumelelo yokuhlanganiswa iqondile: Yimaphi ama-PGN okumele uhlelo luwadlulisele? Zingaki izimo zebhethri ezizosetshenziswa yisikebhe? Ingabe iphrojekthi idinga ukuxhumana kwenethiwekhi yendawo noma ukwakheka kwesango? Ingabe isitifiketi siphathwa ezingeni lebhethri noma ezingeni lesistimu yesikebhe?
Ithimba lobunjiniyela le-DALY lisekela ukuhlanganiswa kokuxhumana kwe-NMEA 2000 kwamaphrojekthi ebhethri lasolwandle, kanye nokulungiswa kwephrothokholi okutholakala ngokwezidingo zephrojekthi. Uma uhlela iphrojekthi yebhethri le-lithium eyenziwe ngokwezifiso, yabelana ngohlobo lomkhumbi wakho, ukucushwa kwebhethri, kanye nedatha izibonisi zakho ezidinga ukuyibonisa esigabeni se-RFQ (isicelo sekhotheshini) — ithimba lethu lobunjiniyela lizophendula ngesincomo sohlelo lokuxhumana kanye nekhotheshini. Ukuchaza isethi ye-PGN, ukucushwa kwesibonelo, kanye nendlela yesitifiketi kusenesikhathi umehluko phakathi kokuhlanganiswa okungena endaweni kanye nalokho okwenziwa kabusha ekuhlolweni kolwandle.
imibuzo ejwayelekile ukubuzwa
Q1I-protocol ye-NMEA 2000 isekelwe kuyiphi?
I-NMEA 2000 yakhelwe kubuchwepheshe bebhasi be-CAN (Controller Area Network), enesendlalelo sesicelo sasolwandle esijwayelekile esithonywe yi-SAE J1939. Isisekelo se-CAN sinikeza inethiwekhi ebonakalayo kanye nokuphathwa kwamaphutha; isendlalelo se-NMEA 2000 sichaza ukuthi imilayezo isho ukuthini.
Q2Ingabe i-NMEA 2000 ifana nebhasi le-CAN?
Cha. Ibhasi le-CAN liwubuchwepheshe benethiwekhi obuyisisekelo; i-NMEA 2000 iyindinganiso ephelele yephrothokholi eyakhelwe phezu kwayo. Amadivayisi amabili angasebenzisa i-CAN kodwa angakwazi ukuqondana — Izincazelo zemiyalezo ye-PGN ye-NMEA 2000 yizo ezidala ukusebenzisana phakathi kwamadivayisi asemanzini.
Q3Ijubane elingakanani i-NMEA 2000 eligijima ngalo?
I-NMEA 2000 isebenza ku-250 kbit/s — cishe ngokushesha okuphindwe kangamashumi amahlanu kune-NMEA 0183 ejwayelekile engu-4,800-baud, futhi ishesha ngokwanele ukuthwala idatha yokuzulazula, injini, kanye nebhethri yomkhumbi ojwayelekile kumgogodla owodwa.
Q4Ingabe amabhethri e-lithium angaxhuma kunethiwekhi ye-NMEA 2000?
Yebo. Uhlelo lwebhethri le-lithium lujoyina inethiwekhi nge-BMS noma isango elidlulisela ama-PGN ebhethri ajwayelekile — 127508 (Isimo Sebhethri), 127506 (Isimo Esiningiliziwe se-DC), kanye no-127513 (Isimo Sokucushwa Kwebhethri) — okuvumela izibonisi ezihambisanayo ukuthi zibonise i-voltage, i-current, kanye nesimo sokushaja. Indlela yokusebenzisa (isikhombikubona sendabuko noma isango) ichazwa ngephrojekthi ngayinye.
- I-imeyili:dalybms@dalyelec.com
Ikhasi lomkhiqizo we-Smart BMS:https://www.dalybms.com/smart-bms/
Isikhathi sokuthunyelwe: Julayi-25-2026
