Yendani m'madoko pa sitima iliyonse yamakono ndipo mupeza maboti omwe chartplotter imawonetsa deta ya injini, autopilot imawerenga sensa ya mphepo, ndipo batire imanena momwe ilili ndi chaji ku chiwonetsero cha helm - ponseponse pa chingwe chimodzi chomwe chikuyenda m'bwato. Ukadaulo womwe uli kumbuyo kwa kuphatikiza kumeneku ndi NMEA 2000®, njira yolumikizirana yomwe yakhala chilankhulo chofala cha zamagetsi zam'madzi.
Bukuli likufotokoza momwe protocol ya NMEA 2000 imagwirira ntchito: netiweki yomwe imayendera, makina otumizira mauthenga omwe imagwiritsa ntchito, momwe zida zimalumikizirana ndi netiweki, ndi zomwe zimafunika kuti makina a batri a lithiamu agwire nawo ntchito. Kaya mukukonzekera kukonzanso zamagetsi kapena kutchula zofunikira zolumikizirana pa projekiti ya batri ya OEM, kumvetsetsa protocol ndi sitepe yoyamba kupita ku dongosolo lomwe chilichonse chimalankhula ndi china chilichonse.
Kodi NMEA 2000 ndi chiyani?
NMEA 2000 ndi njira yolumikizirana yokhazikika yomwe imalola zida zamagetsi zam'madzi - zowonetsera, masensa, mainjini, ndi makina a batri - kugawana deta pa netiweki imodzi. Yopangidwa ndi National Marine Electronics Association, idapangidwa pogwiritsa ntchito ukadaulo wa CAN bus (Controller Area Network) ndipo imalola zida kuchokera kwa opanga osiyanasiyana kusinthana zambiri popanda mawaya apadera pakati pa zida ziwirizi.
NMEA 2000® ndi chizindikiro cholembetsedwa cha National Marine Electronics Association (NMEA), bungwe lochokera ku US lomwe limapanga ndikusunga miyezo ya zamagetsi zam'madzi. Ndondomekoyi imafotokoza netiweki yotsika mtengo, yolunjika mbali zonse ziwiri, yotumizira zinthu zambiri, komanso yolandira zinthu zambiri: chipangizo chilichonse chovomerezeka chingatumize ndikulandira deta, netiwekiyo imadzikonza yokha, ndipo palibe wolamulira wapakati yemwe chilichonse chimadalira.
Mfundo yomaliza imeneyo ndi yofunika kwambiri kuposa momwe imamvekera. Pa netiweki ya NMEA 2000, ngati chipangizo chimodzi chalephera, chotsalacho chimapitiriza kulankhulana. Yerekezerani zimenezo ndi mawaya akale a mfundo ndi mfundo, komwe chida chimodzi nthawi zambiri chimakhala pakati pa unyolo wa deta — ndipo chida chimenecho chikalephera, chipangizo chilichonse kutengera deta yake chinkada.
M'machitidwe, eni maboti ndi omanga amagwiritsa ntchito NMEA 2000 kuti aike deta yoyendera, magawo a injini, kuchuluka kwa matanki, masensa oteteza chilengedwe, ndi - mochulukira - deta ya batri pamsana umodzi wogawana, zomwe zimawoneka kuchokera pachiwonetsero chilichonse chogwirizana chomwe chili m'boti.
NMEA 2000 vs NMEA 0183: Chomwe Chinasintha
NMEA isanafike 2000, zida zamagetsi zam'madzi zinkakambirana za NMEA 0183, njira yotsatizana yomwe idayambitsidwa kumayambiriro kwa zaka za m'ma 1980. NMEA 0183 imapezekabe m'zombo zambiri, ndipo kumvetsetsa kusiyana kumeneku kukufotokoza chifukwa chake makampaniwa adasamukira patsogolo.
NMEA 0183 ndi njira yolumikizirana pakati pa mfundo ndi mfundo. Chipangizo chimodzi — "wolankhula" — chimatumiza ziganizo za ASCII pa ma baud 4,800 (mtundu wa 38,400-baud wothamanga kwambiri unawonjezedwa pambuyo pake, makamaka pa deta yotsata zombo za AIS) kwa "womvera" m'modzi kapena angapo. Womvera amangolandira kuchokera kwa wolankhula m'modzi, kotero kulumikiza zida zambiri kunatanthauza ma multiplexers, buffers, ndi mawaya omwe anali ovuta kwambiri ndi chipangizo chilichonse chowonjezeredwa.
NMEA 2000 inasintha chitsanzo chimenecho ndi netiweki yeniyeni:
| Mbali | NMEA 0183 | NMEA 2000 |
|---|---|---|
| Kapangidwe ka zomangamanga | Wolankhula molunjika, m'modzi yekha → omvera | Netiweki yolowetsa zinthu zambiri, zipangizo zonse zimalankhula ndi kumvetsera |
| Gawo lakuthupi | Siliri (ma siginecha a RS-422/RS-232) | Basi ya CAN, awiri opindika osiyana |
| Liwiro | 4,800 baud (38,400 ya liwiro lalikulu) | 250 kbit/s |
| Mtundu wa deta | Ziganizo za ASCII (zilembo zosapitirira 82) | Mafelemu ang'onoang'ono a binary |
| Muyezo wapadziko lonse lapansi | IEC 61162-1 | IEC 61162-3 |
| Kuwonjezera chipangizo | Kuyendetsa mawaya atsopano, kuthekera kowonjezera mawaya | Ikani chingwe kumbuyo kwa msana |
| Khalidwe lolephera | Kulephera kwa wolankhula kumaswa unyolo | Netiweki imapitirira popanda node yolephera |
Miyezo iwiriyi sigwirizana. Chida cha NMEA 0183 sichingalumikizane ndi netiweki ya NMEA 2000 mwachindunji; makonzedwe osakanikirana amafunikira chipangizo cholowera chomwe chimasinthasintha pakati pa ziwirizi. Pazomanga zatsopano ndi zokonzanso, NMEA 2000 ndiye chisankho chokhazikika - ndichifukwa chake makina a batri opangidwira kugwiritsidwa ntchito panyanja amafunika kulankhula.
Momwe Ndondomeko Imagwirira Ntchito: Mabasi a CAN ndi Ma PGN
Pansi pa hood, NMEA 2000 yamangidwa pa Controller Area Network (CAN) — ukadaulo womwewo wa mabasi womwe watsimikiziridwa kwa zaka zambiri m'magalimoto ndi mafakitale — ukuyenda pa 250 kbit/s. Chomwe NMEA 2000 imawonjezera pamwamba pa CAN yaiwisi ndi gawo lokhazikika la ntchito lomwe limakhudzidwa kwambiri ndi SAE J1939 (banja la protocol yolumikizirana yomwe imagwiritsidwa ntchito m'magalimoto akuluakulu ndi magalimoto olemera): mawu ogawana omwe amauza chipangizo chilichonse zomwe ma byte omwe ali pa waya amatanthauza kwenikweni.
Mawu amenewo amakonzedwa m'njiraManambala a Magulu a Parameter (PGNs)PGN iliyonse ndi mtundu wa uthenga wofotokozedwa: PGN imodzi imanyamula malo a GPS, ina imanyamula RPM ya injini, ina imanyamula kuya kwa madzi. Mauthenga amayenda ngati mafelemu a CAN pogwiritsa ntchito chizindikiritso cha 29-bit ndi gawo la data la 8-byte; mauthenga akuluakulu amagawidwa m'mafelemu angapo ndikusonkhanitsidwanso ndi wolandila. Chifukwa chipangizo chilichonse chovomerezeka chimatanthauzira ma PGN mwanjira yomweyo, chiwonetsero cha Garmin chimatha kuwerenga deta kuchokera pachipata cha injini ya Yamaha ndi sensa ya thanki ya chipani chachitatu popanda opanga omwe amagwirizana.
Pa makina a batri, gulu linalake la ma PGN limagwira ntchito:
- PGN 127508 - Mkhalidwe wa Batri: magetsi, mphamvu, ndi kutentha kwa batri
- PGN 127506 – DC Mkhalidwe Watsatanetsatane: mkhalidwe wa mlandu, mkhalidwe wa thanzi, ndi nthawi yotsala
- PGN 127513 - Mkhalidwe wa Kukonza Batri: zidziwitso za voteji, chemistry, ndi mphamvu
Ma alamu ndi machenjezo amayenda padera, kudzera mu mauthenga ochenjeza a netiweki (PGN 126983) — ndi momwe vuto la batri limakhalira chenjezo looneka, lomveka bwino pa chiwongolero m'malo mokhala ngati mbendera yopanda phokoso mkati mwa paketi.
Pamene dongosolo loyang'anira mabatire (BMS) kapena chipata cha batire chitumiza ma PGN awa pa netiweki, chiwonetsero chilichonse chomwe chili pa bolodi chomwe chimathandizira ma PGN awa chimatha kuwonetsa mphamvu ya pakiti, mphamvu yokoka, ndi momwe chaji imagwirira ntchito - popanda kuwonjezera chophimba chosiyana cha batire pa helm. Batire iliyonse imapatsidwa nambala ya instance, yomwe ndi momwe netiweki imasiyanitsira banki yanyumba ndi batire yoyambira ndikuiwonetsa padera.
Gawo la PGN ili ndi malo enieni omwe magetsi a lithiamu amakumana ndi magetsi am'madzi, ndipo ndi pomwe mapulojekiti ophatikiza amapambana kapena kuyima. BMS yomwe imayesa chilichonse koma osatumiza chilichonse imayika deta yolondola pamalo omwe palibe amene angaione; BMS yomwe imayika ma PGN a batri imapangitsa detayo kukhala gawo la chombocho.
Kapangidwe ka Network ka NMEA 2000
Mwachilengedwe, netiweki ya NMEA 2000 imatsatira topology yosavuta komanso yolimba - ndipo kulimba kwake ndi chizindikiro, chifukwa kumapangitsa ma netiweki kukhala odziwikiratu.
[CHITHUNZI CHOYAMBA PANO — topology ya netiweki yowonetsa msana, zotchingira, zingwe zogwetsa, ndi zida kuphatikiza MFD, chipata cha injini, masensa, ndi banki ya batri ya lithiamu yokhala ndi BMS. Mawu ena: "NMEA 2000 network diagram yokhala ndi batri yolumikizidwa kudzera pa chingwe chogwetsa"]
Netiweki imapangidwa kuchokera ku zinthu zinayi:
Msanandi chingwe chachikulu cha thunthu chomwe chimayenda m'chombocho. Chipangizo chilichonse chimalumikizana nacho; palibe chipangizo chomwe chimalumikizana mwachindunji ndi chipangizo china.
Zotsutsa zomalizaKutseka malekezero onse a msana. Chizindikiro cha basi ya CAN chimafuna kuchotsedwa kumapeto onse a thunthu kuti chizindikiro chisawonekere - cholepheretsa kapena chowirikiza kawiri ndi chifukwa chofala cha netiweki yolakwika.
Dontho zingweLumikizani chipangizo chilichonse ku msana kudzera mu ma T-connectors. Muyezowu umafotokoza kutalika kwakukulu kwa msana ndi kutsika kwapadera, komwe kumasunga nthawi ya chizindikiro mkati mwa zofunikira pamene maukonde akukula.
Mphamvu ya netiwekiimaperekedwa kudzera pa msana wokha. NMEA 2000 cables imakhala ndi mphamvu yakeyake yolumikizira ma netiweki a zida zolumikizidwa, zosiyana ndi katundu wamkulu wa DC wa chombocho.
Zipangizozi zimagwiritsa ntchito zolumikizira zokhazikika za ma pin 5 (kawirikawiri Micro-C) pa chingwe chopindika chotetezedwa, pogwiritsa ntchito chizindikiro chosiyana kuti chiteteze phokoso - phindu lofunika kwambiri m'malo odzaza ndi ma alternator, ma inverter, ndi ma radio transmitters.
Pa kukhazikitsa batri, kapangidwe kameneka kali ndi tanthauzo limodzi lothandiza loyenera kukonzekera msanga: mawonekedwe olumikizirana a banki ya batri amafunika njira yolowera m'mbuyo, ndipo ma netiweki okhala ndi mabanki ambiri a batri amafunika kukonzedwa manambala awo kuti banki iliyonse iwoneke ngati gwero losiyana paziwonetsero.
Zomwe Zipangizo Zimalumikizana ndi Netiweki ya NMEA 2000
Pafupifupi magulu onse a zamagetsi apamadzi tsopano amatumizidwa ndi kulumikizana kwa NMEA 2000:
Mawonekedwe a Multi-function (MFDs)ndi ogwiritsa ntchito deta ya netiweki — ma chartplotter ndi ziwonetsero za zida kuchokera ku makampani akuluakulu amagetsi am'madzi amawerenga ma PGN ndikuwapereka kwa woyendetsa. M'mabwato ambiri a MFD ndi komwe deta ya batri imawonedwa pamapeto pake.
Zipata za injinikumasulira deta ya injini yanu pa netiweki, kuyika RPM, kuyenda kwa mafuta, ndi ma alamu a injini paziwonetsero zomwezo monga china chilichonse.
Masensa— kuya, mphepo, GPS, kutentha, mulingo wa thanki, kuyenda kwa mafuta — ndi omwe amapanga deta ya netiweki, iliyonse imatumiza seti yake ya PGN.
Ma Autopilots ndi ma wailesionse amagwiritsa ntchito deta yoyendera ndipo, pankhani ya ma wailesi a VHF okhala ndi DSC (Digital Selective Calling), amagwiritsa ntchito deta ya netiweki ya GPS poyimba mafoni ovutika.
Zipangizo za batri ndi mphamvundi gulu lomwe likukula mofulumira kwambiri. Ma monitor a batri, ma shunt, ma DC energy meter, ndi ma lithium battery system okhala ndi ma BMS electronics omwe amatha kulumikizana amatumiza batri PGN group yomwe yafotokozedwa pamwambapa, ndikusandutsa helm screen kukhala screen yowongolera mphamvu. Momwe ma marine display amawerengera ndikutanthauzira deta ya lithium battery ndi nkhani yozama mokwanira kotero kuti timaifotokoza m'buku lake lotsogolera.Momwe Ma Marine Electronics Amawerengera Deta ya Lithium Battery →
Ngati mukuyang'ana batire ya lithiamu pa bwato, mphamvu yolumikizirana iyenera kukhala pamndandanda wotsatira pamodzi ndi kuchuluka kwa mphamvu ndi kutulutsa mphamvu — kalozera wathu wosankha batire ya lithiamu ya m'madzi akufotokoza momwe mungayezerere poyerekeza ndi zina zonse zomwe zafotokozedwa.Buku Lotsogolera Kusankha Mabatire a Marine Lithium →
Chitsimikizo ndi Kutsatira Malamulo
Mbali imodzi ya NMEA 2000 yomwe imadabwitsa ogula ambiri: si njira yotseguka, yogwiritsira ntchito. NMEA 2000 ndi muyezo wovomerezeka, ndipo zinthu zonse zomwe zimawerenga kapena kutumiza deta ya NMEA 2000 ziyenera kutsimikiziridwa pansi pa Pangano la License la NMEA 2000 (gwero:NMEAKuyesa kwa satifiketi kungachitike ndi wopanga pogwiritsa ntchito zida za satifiketi za NMEA kapena ndi munthu wina, ndipo ndalama zolipirira ziphaso za muyezowu zimayikidwa m'magawo malinga ndi makampani.
Chitsimikizo chilipo pazifukwa zomveka: ndicho chimapangitsa lonjezo la "chipangizo chilichonse, mtundu uliwonse" kukhala logwirizana. Chipangizo chovomerezeka chawonetsa kuti chimatumiza mauthenga ofunikira molondola, chimayankha bwino zopempha zoyendetsera netiweki, ndipo sichisokoneza basi kwa aliyense.
Kwa omanga OEM ndi ophatikiza makina, izi zimakhala ndi zotsatirapo zokonzekera. Pamene makina a batri olumikizirana apangidwa kukhala bwato, satifiketi ndi gawo lodziwika bwino panjira ya malonda - yokhala ndi zofunikira zolembedwa za hardware ndi mapulogalamu - m'malo moganizira pambuyo pake. Ndani amavomereza chiyani, komanso pamlingo uti wa chinthu chomalizidwa, ndi funso loti lithetsedwe koyambirira kwa polojekiti. Tikuwona momwe magulu a OEM nthawi zambiri amagwirira ntchito kuphatikizana kwa kulumikizana ndi njira ya satifiketi mu bukhu lathu lophatikizana la OEM.Momwe Ma OEM Amagwirizanirana ndi NMEA 2000 Communication →
NMEA 2000 ndi Lithium Battery Systems
Mabatire a Lithium iron phosphate (LiFePO4) anasintha zomwe makina amagetsi am'madzi angachite - mphamvu yogwiritsidwa ntchito kwambiri, kuyatsa mwachangu, komanso - kudzera mu zamagetsi zoyendetsera mabatire zomwe amanyamula - zambiri zomwe zili mkati. Koma deta imeneyo imangopanga phindu ikafika kwa woyendetsa, ndipo pa sitima yokhala ndi zamagetsi zolumikizidwa, njira yolunjika kwambiri yopita kwa woyendetsa ndi netiweki ya NMEA 2000.
Dongosolo la batire la lithiamu limagwira ntchito mu netiweki kudzera mu BMS yake kapena kudzera mu njira yolumikizirana yomwe imamasulira deta ya BMS kukhala ma PGN a batire wamba. Akafika pa netiweki, momwe mphamvu imakhalira imawonekera pa chartplotter, mphamvu yamagetsi yochepa imayambitsa ma alarm pa helm m'malo mongokhala chete mu batire, ndipo mabanki ambiri a batire amatha kuyang'aniridwa limodzi kudzera mu manambala awo.
Pa mapulojekiti a batri opangidwa mwamakonda ndi OEM, zofunikira pakulankhulana ziyenera kukhala zolimba mofanana ndi zofunikira pamagetsi. Mafunso omwe amatsimikiza kupambana kwa kuphatikizana ndi enieni: Ndi ma PGN ati omwe makina ayenera kutumiza? Kodi sitimayo idzayendetsa mabatire angati? Kodi polojekitiyi ikufuna kulumikizana kwa netiweki kapena kapangidwe ka chipata? Kodi satifiketi imayendetsedwa pamlingo wa batri kapena mulingo wa makina a chotengera?
Gulu la mainjiniya la DALY limathandizira kulumikizana kwa NMEA 2000 pama projekiti a batri ya m'madzi, ndi kusintha kwa protocol komwe kulipo malinga ndi zofunikira za projekiti. Ngati mukukonzekera projekiti ya batri ya lithiamu yapadera, gawani mtundu wa chombo chanu, kapangidwe ka batri, ndi deta yomwe mawonetsedwe anu amafunika kuwonetsa pa RFQ (pempho la mtengo) - gulu lathu la mainjiniya lidzayankha ndi upangiri wa dongosolo lolumikizirana ndi mtengo. Kufotokozera seti ya PGN, kapangidwe ka chitsanzo, ndi njira yotsimikizira koyambirira ndi kusiyana pakati pa kuphatikiza komwe kumagwera pamalo ake ndi komwe kumasinthidwanso pa kuyesa kwa nyanja.
Mafunso Ofunsidwa Kawirikawiri
Q1Kodi ndondomeko ya NMEA 2000 imachokera pa chiyani?
NMEA 2000 yamangidwa pa ukadaulo wa mabasi a CAN (Controller Area Network), yokhala ndi gawo lokhazikika la ntchito yapamadzi lotsogozedwa ndi SAE J1939. Maziko a CAN amapereka netiweki yeniyeni ndi momwe angachitire zolakwika; gawo la NMEA 2000 limafotokoza tanthauzo la mauthengawo.
Q2Kodi NMEA 2000 ndi yofanana ndi basi ya CAN?
Ayi. CAN bus ndiye ukadaulo wa netiweki; NMEA 2000 ndi muyezo wathunthu wa protocol womwe wamangidwa pamwamba pake. Zipangizo ziwiri zimatha kugwiritsa ntchito CAN koma sizingathe kumvetsetsana — Matanthauzidwe a uthenga wa NMEA 2000 a PGN ndi omwe amapangitsa kuti zida zam'madzi zigwirizane.
Q3Kodi NMEA 2000 imagwira ntchito pa liwiro lotani?
NMEA 2000 imagwira ntchito pa 250 kbit/s — mofulumira kwambiri kuposa NMEA 0183 ya 4,800-baud, ndipo imathamanga mokwanira kunyamula deta yoyendera, injini, ndi batri ya sitima yanthawi zonse pa msana umodzi.
Q4Kodi mabatire a lithiamu angalumikizane ndi netiweki ya NMEA 2000?
Inde. Dongosolo la batri la lithiamu limalumikizana ndi netiweki kudzera mu BMS kapena chipata chomwe chimatumiza ma PGN a batri wamba — 127508 (Mkhalidwe wa Batri), 127506 (Mkhalidwe Watsatanetsatane wa DC), ndi 127513 (Mkhalidwe wa Kakonzedwe ka Batri) — zomwe zimalola zowonetsera zogwirizana kuwonetsa magetsi, mphamvu, ndi momwe magetsi alili. Njira yogwiritsira ntchito (mawonekedwe achilengedwe kapena chipata) imafotokozedwa pa projekiti iliyonse.
- Imelo:dalybms@dalyelec.com
Tsamba la malonda a Smart BMS:https://www.dalybms.com/smart-bms/
Nthawi yotumizira: Julayi-25-2026
