Kungani I-J1939 Fuel Level Ishoda Embukisweni?

Usanda kuthuthukela kusibonisi sesimanje sedijithali njenge-Garmin, i-Murphy, noma i-Human-Machine Interface (HMI) yangokwezifiso. Ulindele i-telemetry yenjini ecacile kanye nokufundwa kwedatha okunembayo. Esikhundleni sokufundwa okucacile, isikali sikaphethiloli sibaneka iphutha, sifunde uziro, noma sihlale singenalutho ngokuphelele. Lesi simo esicasulayo simisa ukusebenza ngokushesha futhi sishiya abaqhubi bengaboni nhlobo ukuthi bangawagcina kanjani amafutha.

Kunethiwekhi yamabhasi e-SAE J1939 kanye ne-CAN, izinga likaphethiloli elishodayo akuvamile ukuba kube isikrini esiphukile. Cishe njalo ukwehluleka ekuxhumaneni kwezingxenyekazi zekhompuyutha, ukungafani kwephrothokholi, noma iphutha lokuhumusha le-analogi ukuya kwedijithali. Izibonisi zesimanje zedijithali zilindele amaphakethe edatha alawulwa ngokuqinile. Uma iphakethe ledatha lingekho, lonakele, noma lithunyelwe ngesivinini esingalungile, igeji imane yehluleke ukugcwala.

Lo mhlahlandlela wephula izimbangela zokushoda kwesignali kaphethiloli ye-J1939. Uzofunda ukuthi ungawahlukanisa kanjani amaphutha phakathi kwezintambo ezibonakalayo nezendlalelo zesixhumanisi sedatha. Ngaphezu kwalokho, siveza imibandela eqinile yokukhetha inzwa yokufaka esikhundleni efanele noma isiguquli se-analog ukuya ku-CAN. Ungasebenzisa le mininingwane ukuze ubuyisele ukuzinza kwenethiwekhi ngokushesha.

Okuthathwayo Okubalulekile

• Ileveli kaphethiloli ye-J1939 engabonisi esibonisini ngokuvamile isukela ezintweni eziphikisa ukunqanyulwa ezingekho, izilinganiso ze-baud ezingafani (250k vs. 500k), noma ukwehluleka ukusakaza i-PGN 65276 (SPN 96).

• Ukuthuthukisa injini endala iye ku-HMI yedijithali kudinga isiguquli esikhethekile se-analog-to-CAN uma umthumeli wangempela ophikisayo egcinwa.

• Lapho uhlola umthumeli omusha wezinga lethangi le-SAE J1939, beka kuqala amayunithi anamakheli omthombo alungisekayo kanye nezilinganiso ze-IP67+ ezimangelengele ezindaweni ezinokhahlo.

• Ukuxazulula le nkinga ngokuhlelekile kuvimbela ukushintshwa okungadingekile kwezibonisi zedijithali ezisebenza ngokugcwele.

Izindleko Zebhizinisi Zezinga likafuel le-J1939 elingabonisi

Amaloli athwala kanzima, imikhumbi yasolwandle, nezinjini zokuphehla amandla ezimbonini zithembele kakhulu kudatha ye-telemetry enembayo. Ukusebenza ngaphandle kwedatha enembile yamafutha kudala ubungozi obukhulu bokusebenza kuyo yonke le mikhakha. Ubhekana nokuphela kukaphethiloli okuyinhlekelele ezindaweni ezikude kanye nesikhathi sokuphumula esingalindelekile phakathi nemisebenzi ebalulekile. Izinjini zikadizili zisengozini enkulu yokubulawa yindlala kaphethiloli. Ukusebenzisa ithangi likadizili elikhulu lome ngokuphelele kuvame ukubangela ukukhiya komoya okuqinile ohlelweni lomjovo. Ukopha izintambo zikaphethiloli ezinengcindezi ephezulu kudinga ukungenelela okubanzi, okuphoqa impahla ukuthi ingaxhunyiwe ku-inthanethi amahora.

Ama-opharetha avame ukukhomba iminwe kusibonisi esibizayo sedijithali lapho amageji ehluleka. Basola ngephutha isikrini se-HMI esiyinkimbinkimbi lapho ukwehluleka kwangempela kufihlwe ekujuleni kwezintambo. Ezimweni eziningi, uzothola iphutha elilula le-wiring elibangela ukucisha. I-node yenethiwekhi engalungiselelwe kahle noma iphinikhodi egqwalile ingase ibangele isikrini esingenalutho esifanayo. Ukusola isikrini kuholela ekuhlolweni kokuxilonga okumoshayo kanye nokukhungatheka okungapheli kwabasebenzi bokulungisa.

Ukulungiswa okuyimpumelelo kusungula ukusakazwa kwedatha kaphethiloli okuqhubekayo, okuzinzile kulo lonke ibhasi. Inethiwekhi kufanele ithumele idatha kusihlonzi esifanele ngaphandle kokungabaza. Akufanele ubone nhlobo ukushayisana kwenethiwekhi kumathuluzi akho okuxilonga. Isistimu kufanele isuse ngokuphelele noma yimaphi amaphutha aqhubekayo okunqamula noma ukuphela kwesikhathi. Ukufeza lokhu kuqinisekisa ukusebenza okuthembeke kakhulu futhi kubuyisela ukwethenjwa komsebenzisi kumageji abo edijithali.

Isendlalelo Esibonakalayo vs. Isixhumanisi Sedatha: Ukuxilonga Ukunqamula

Ukuthola ukuthi kungani une I-J1939 izinga likaphethiloli elingabonisi lidinga ukuhlukanisa inethiwekhi ibe izingxenye ezimbili ezihlukene. Kufanele uhlole i-hardware yezintambo ezibonakalayo kanye nesofthiwe yephrothokholi yedijithali ngokuhlukana. Ukuxuba lezi zinyathelo zokuxazulula inkinga kumosha isikhathi esibalulekile sokuxilonga.

Ukuhlukanisa Isendlalelo Esibonakalayo (Izintambo kanye ne-Hardware)

Isendlalelo esibonakalayo siphethe ama-impulses kagesi eluhlaza phakathi kwezilawuli. Uma lesi sisekelo sihluleka, ayikho idatha yedijithali efinyelela kuyunithi yokubonisa.

• Izinqamuli Eziphikisayo: Amanethiwekhi e-CAN adinga ngokuqinile izimbangi ezingu-120-ohm kuzo zombili iziphetho zomgogodla oyinhloko. Izinto eziphikisayo ezingekho zenza isignali ibonakale kanzima eduze kwezintambo. Lokhu kubonakaliswa kuphazamisa amaphakethe edatha futhi kwehlise idatha kaphethiloli ngokuphelele. Hlala usebenzisa i-multimeter yedijithali ukukala ukumelana kuyo yonke i-CAN High kanye ne-CAN Low. Kufanele ifundeke cishe ngama-ohms angama-60 lapho isistimu yehliswa amandla.

• Ukubophela Ubuqotho: Hlola umzila wezintambo ngokucophelela eduze kwe-chassis noma i-hull. Hlola izintambo eziphiniwe ze-CAN High noma ze-CAN Low eduze nama-bulkheads. Kufanele futhi uqinisekise ukuxhumana okuyinhloko okusekhanda lenzwa. Indawo esengozini idala ukucishwa kwama-voltage kagesi. Lawa ma-offset avimbela i-chip ye-transceiver ekufundeni amasignali ahlukene ngendlela efanele.

• Ukugqwala Kwesixhumi: Hlola izixhumi ukubona i-oxidation eluhlaza. Ukungena kwamanzi kupulaki kucekela phansi ama-voltage e-CAN athambile. Hlanza izikhonkwane kahle futhi usebenzise igrisi ye-dielectric ukuze uvimbele ukunqwabelana komswakama esikhathini esizayo.

Ukuhlukanisa Isendlalelo Sephrothokholi (Idatha Nesofthiwe)

Uma ukuhlolwa kwezintambo kuzwakala kahle, inkinga ivamise ukucasha kusendlalelo sedatha. Ukungalungiswa kahle kwesoftware kuvame ngendlela emangalisayo ngesikhathi sokuthuthukiswa kwemishini ye-aftermarket.

• Ukungafani Kwesilinganiso Se-Baud: Amanodi enethiwekhi kufanele akhulume ngesivinini esifanayo ncamashi. Uma inethiwekhi yenjini yakho eyinhloko isebenza ku-500 kbps, kodwa inzwa yokushintsha isakaza ngo-250 kbps, ukuxhumana kwehluleka khona manjalo. Isibonisi asikwazi ukuncozulula amaphakethe edatha anensa. Uzobona izikrini ezingenalutho noma amaphutha amakhulu okuphela kwesikhathi okuxhumana kudeshi.

• I-PGN Nokuqinisekiswa kwe-SPN: Inkomba yomkhakha evamile yezinga likaphethiloli le-Dash Display yiParameter Group Number (PGN) 65276. Lo mlayezo othize usebenzisa iSuspect Parameter Number (SPN) 96. Udinga ithuluzi lokuhlaziya le-CAN elizinikele ukuze uqinisekise lokhu. Ixhume embotsheni yokuxilonga futhi ubuke ithrafikhi ebukhoma. Uma i-PGN 65276 ingekho, inzwa ayithumeli nje.

• I-FMS Gateway Filtering: Izinhlelo zokusebenza ze-Fleet zivame ukusebenzisa imojuli yesango le-Fleet Management Standard (FMS). Leli sango lihlukanisa ngokuphephile ibhasi lenjini elibalulekile nebhasi lokubika le-telematics. Qinisekisa ukuthi isango alihlungi izinga likaphethiloli le-PGN ngaphambi kokuthi lifike kusibonisi sedeshibhodi.

Inselele Ye-Retrofit: Ukuhlanganisa Abathumeli Be-Analogi Ezibonisini Zedijithali

Izinjini zikadizili ezindala zithembele kubuchwepheshe obulula, obunamashumi eminyaka ubudala ekukaleni uphethiloli. Ngokuvamile basebenzisa abathumeli be-analog abaqinile abakhelwe endaweni eslayidayo yokuntanta. Laba bathumeli bakhipha ububanzi bokumelana obuhlukile obuhlukile njenge-American standard 240-33 ohms noma indinganiso yaseYurophu engu-0-190 ohms. Izibonisi zesimanje ze-J1939 ziqonda kuphela amaphakethe edijithali ayinkimbinkimbi. Abakwazi ukufunda lokhu kumelana nogesi okungaphekiwe ngokuqondile, okudala ukungezwani okuyisisekelo kwehadiwe.

Isigaba Sesixazululo: Iziguquli ze-Analog-to-CAN

Ungase ungafuni ukukhipha ithangi elikhulu lezimboni ngokushesha. Ungakhetha ukushiya iyunithi ye-analogi ekhona ngokugcwele. Isango le-analog-to-J1939 lingenza isiginali ye-analog ibe yidijithali. Le mojula encane, esemgqeni isebenza njengomhumushi ohlakaniphile phakathi komthumeli omdala nesibonisi esisha sedijithali. Ifunda ukumelana futhi ikuguqule kube iphakethe le-CAN elivumelekile.

Nokho, kufanele uqaphe ngokwedlulele phakathi nenqubo yokuthenga. Gwema iziguquli ezishibhile, ezingenalo uphawu ezimakethe eziku-inthanethi ezijwayelekile. Zivamise ukufaka amakheli omthombo anakhodi eqinile ongeke ukwazi ukuwashintsha. Lawa makheli anekhodi eqinile avamise ukungqubuzana namayunithi akhona okulawula injini (ECUs) noma izilawuli zokudlulisela. Lokhu kungqubuzana kwekheli kuholela ekushayisaneni kwenethiwekhi ngokushesha, kushaye amasistimu abalulekile angaxhunyiwe ku-inthanethi.

Isigaba Sesixazululo: Ukushintshwa Kwedijithali Okuqondile

Indlela ye-retrofit ehlanzekile nethembekile kunazo zonke ihlanganisa ukushintshwa kwe-hardware egcwele. Ususa ngokuphelele iyunithi endala, ekwazi ukumelana nomshini ethangini. Bese ufaka okomdabu, isimo esiqinile Inzwa yezinga likaphethiloli webhasi ye-CAN . Lokhu kuthuthukiswa kuqeda ngokuphelele ibhokisi le-middleman converter. Iyunithi entsha isakaza amaphakethe edijithali ngqo kumgogodla oyinhloko. Nakuba idinga ukufinyelela ethangini elingokoqobo ukuze ifakwe, ithuthukisa kakhulu ukwethembeka kwenethiwekhi kanye nokunemba kwedatha.

Ukuhlola Umthumeli Wezinga Lethangi Oshintshwayo we-SAE J1939

Uma ukuxilongwa kwakho kukhomba inzwa efile unomphela, kufanele ukhethe iyunithi yokushintsha ngokucophelela. Hhayi bonke Umthumeli wezinga lethangi le-SAE J1939 wenza kahle ngokulinganayo ezindaweni ezinokhahlo, ezidlidlizayo.

I-Measurement Technology

Abathengi ngokuvamile bakhetha phakathi kwemiklamo yesimanje ye-capacitive kanye namamodeli wokushintsha umhlanga wendabuko. Izinzwa ze-Capacitive zinikeza ukufunda okuqhubekayo, kokucaca okuphezulu ngokulinganisa ukuguqulwa kwe-dielectric yoketshezi ngokwalo. Lokhu kucutshungulwa kwesofthiwe yangaphakathi kuqeda umthelela wokunyathela wodlame owubona njengemitha kaphethiloli ngesikhathi sokuthutha okunolaka. Ziphakeme kakhulu ekuhlanganisweni kwebhasi le-CAN elinembe kakhulu. Amaswishi omhlanga ancike ekuntanteni okubonakalayo kazibuthe phezu kwebhodi lesekethe. Babuyekeza kuphela ukufundwa lapho ukuntanta kudlula ngokomzimba izikhawu ezithize kazibuthe.

Ukuvumelana nezimo (Kubalulekile Ezinqumweni ze-BOF)

Udinga ukuguquguquka okukhulu kokucushwa lapho uhlanganisa izingxenyekazi zekhompuyutha ezintsha ku-ecosystem ekhona. Ukufuna ikheli kubalulekile ekusebenzeni okufanele, okungenaphutha. Zibuze imibuzo embalwa ebaluleke kakhulu ngaphambi kokuthenga. Ungakwazi yini ukushintsha kalula Ikheli Lomthombo lenzwa usebenzisa ithuluzi lokumisa elijwayelekile? Ungakwazi yini ukulinganisa iphrofayela yethangi yangaphakathi ukuze uthole umumo wethangi ongajwayelekile noma ngokwezifiso? Amathangi asolwandle angama-V-hull kanye namathangi esihlalo esinyathelwe kakhulu adinga imephu yevolumu yangokwezifiso. Uma inzwa ingenawo amandla okuhlela, ingase ibike ithangi eligcwele uhhafu ngokungalungile ngenxa yejiyomethri yethangi eyinqaba.

Ukuqina Nokuhambisana Namazinga

Ukuvalwa kwemvelo ekugcineni kubeka isikhathi sokuphila sezinzwa zasolwandle nezinzima. Bheka ukuthobela okuqondile, okubhaliwe nezinga le-SAE J1939. Futhi ufuna izitifiketi ezijwayelekile ze-CE ne-RoHS ukuze uqinisekise ukuphepha kukagesi. Naka ngokukhethekile izilinganiso ze-Ingress Protection ezisemthethweni eshidini elicacisiwe. Udinga ngokuphelele IP67 noma IP68 ukuvalelwa kwemvelo ukuze uvikele ukujikeleza kwangaphakathi. Ukungena kwamanzi kuseyimbangela ehamba phambili yokufa kwenzwa ngaphambi kwesikhathi ensimini.

Ukuqhathaniswa kokusebenza kwe-Fuel Sender Technologies

Amaqiniso Okusebenzisa kanye Nezinyathelo Ezilandelayo

Ukulandela ukulandelana okunengqondo, okuhlelekile konga amahora amaningi okukhungatheka. Sebenzisa lezi zinyathelo zokuxilonga ukuze ubuyisele ukusebenza kwesibonisi sakho ngendlela ehlelekile.

1. Hlola i-CAN Bus Traffic: Ngaphambi kokuthenga noma iyiphi ihadiwe entsha, xhuma isifundi sekhodi se-J1939 embotsheni enkulu yokuxilonga. Ungasebenzisa futhi isiphunga se-USB CAN esijwayelekile kukhompuyutha ephathekayo. Bheka ngokuqondile i-SPN 96 ekusakazweni kwedatha. Uma ikhona ebhasini, inzwa isebenza kahle. Isibonisi asilungiselelwe kahle futhi sidinga isibuyekezo sesofthiwe. Uma iphakethe lishoda ngokuphelele, inzwa noma izintambo zehlulekile.

2. Qinisekisa I-Network Architecture: Qinisekisa ukuthi usanda kufakwa Inzwa yezinga likaphethiloli i-J1939 empeleni ixhumeka kumgogodla ofanele. Abasebenzisi abaningi bayifaka ngentambo ebhasini lesibili lobunikazi ngephutha. Leli iphutha elivame kakhulu ekusethweni kwe-hybrid Marine NMEA 2000 kanye ne-J1939 hybrid. Isibonisi asikwazi ukuvala igebe ngaphandle kwesango elikhethekile lokuhlanganisa.

3. Hlola Ukumelana Nokuqeda: Vala wonke amandla ebhethri ohlelweni. Hlola amaphinikhodi we-CAN High kanye ne-CAN Low nge-multimeter. Qinisekisa ukuthi ubona ama-ohms angu-60. Uma ubona ama-ohm angu-120, ulahlekelwa isinqamuleli esinqamula umkhawulo owodwa webhasi. Uma ubona ama-ohms angu-40 noma ngaphansi, unezinto eziningi zokuphikisa ezifakiwe.

4. Uhlu Olufushane Lwesixazululo: Hlola ukufinyeleleka kwethangi lakho ngokucophelela. Uma ithangi lifinyeleleka kalula ukusuka phezulu, thenga inzwa yezinga le-liquid le-J1939 capacitive. Le ndlela inikeza ukwethembeka okukhulu kwesikhathi eside. Uma ithangi livalwe ngokuphelele noma lingafinyeleleki ngaphansi kwe-flooring esindayo, thenga isiguquli sesignali se-analog-to-J1939 sekhwalithi ephezulu, esihlelekayo.

Isiphetho

Ukubuyisela idatha ebalulekile ye-telemetry kudinga indlela yokuxilonga ehlelekile esikhundleni sokushintshwa kwengxenye okungahleliwe. Kufanele uqinisekise ukuxhumana okuphathekayo kanye nokucushwa kwephrothokholi ngaphambi kokuthinta ihadiwe lethangi elibonakalayo. Uma ubhekene nokungahambisani kwe-analogi, khetha amasango ahlelekayo ekhwalithi ephezulu ukuze uvikele ubuqotho benethiwekhi. Ukuze uthole ukushintshwa okugcwele, beka phambili ubuchwepheshe be-solid-state capacitive ukuqinisekisa ukunemba okuphezulu kokubika. Njalo qinisekisa izilinganiso ze-baud yenethiwekhi yakho namakheli omthombo phakathi nesigaba sokugcina sokufaka. Ukulandela lezi ziqondiso ngqo kuqinisekisa ukuthi izibonisi zakho zedijithali zinikeza idatha enembile, engaphazamiseki yokusebenza isikhathi eside.

FAQ

Q: Iyiphi i-PGN esetshenziselwa izinga likaphethiloli le-J1939?

A: Idatha yezinga likaphethiloli ngokuvamile isakaza ngaphansi kweParameter Group Number (PGN) 65276. Le PGN ethile ihambisana nomsebenzi ojwayelekile we-Dash Display. Ngaphakathi kwaleli phakethe lomlayezo othile, inethiwekhi isebenzisa iSuspect Parameter Number (SPN) 96 ukuze imele Ifuel Level 1 ngokunembile.

Q: Ngingakwazi ukuxhuma umthumeli wamafutha e-analog ngokuqondile kusibonisi se-J1939?

IMP: Cha, awukwazi ukuwaxhuma ngokuqondile. I-J1939 yesimanje ibonisa kuphela imilayezo ye-CAN yedijithali. Abathumeli be-analog bakhipha ukumelana nogesi okuguquguqukayo okufana no-240-33 ohms. Kufanele ufake isango elikhethekile le-analog-to-CAN. Lesi siguquli sihumusha ukumelana nogesi okungaphekiwe kube amaphakethe edijithali afomethwe kahle.

Umbuzo: Kungani izinga lami likaphethiloli lehla njalo liye kuqanda kudeshi wedijithali?

IMP: Ukwehla kancane kancane ngokuvamile kubonisa izinkinga zesendlalelo somzimba kunezinzwa ezifile ngokuphelele. Kufanele uhlole ukuthi azikho izinqamuli zokunqamula ezingu-120-ohm ezingekho kumgogodla we-CAN kuqala. Okulandelayo, hlola izintambo eziyinhloko ukuze uthole izintambo ezixegayo ze-CAN Phezulu noma ze-CAN eziphansi. Ekugcineni, qinisekisa ukuxhumana okuphansi ekhanda lenzwa.

Q: Ingabe ngidinga inzwa ye-baud rate engu-250k noma engu-500k?

IMP: Kuncike ngokuphelele ekwakhekeni kwenethiwekhi yemoto yakho ethile noma umkhumbi. Amanethiwekhi amaningi we-J1939 anefa elisindayo asebenza ku-250 kbps. Kodwa-ke, amasistimu e-elekthronikhi amasha avame ukuthuthela kuzivinini ezisheshayo ezingu-500 kbps. Kufanele uqondanise izinga le-baud yenzwa entsha ncamashi nenethiwekhi yakho ekhona ukuze uvimbele ukwehluleka kokuxhumana.