Sei J1939 Fuel Level Isipo Kubva paChiratidziro?

Iwe uchangobva kukwidziridza kune yemazuva ano dhijitari kuratidzwa seGarmin, Murphy, kana tsika Human-Machine Interface (HMI). Iwe unotarisira crystal-yakajeka injini telemetry uye chaiyo data kuverenga. Panzvimbo pekuverenga kwakajeka, geji yemafuta inopenya chikanganiso, inoverenga zero, kana kuramba isina chinhu. Mamiriro ezvinhu anoshungurudza aya anomisa kushanda ipapo uye anosiya vashandisi vasingaoni zvachose kune avo vanochengeterwa mafuta.

MuSAE J1939 uye CAN mabhazi network, kushaikwa kwemafuta mwero hauwanzo kuputswa skrini. Kunenge nguva dzose kutadza mukukurukurirana kwehardware, kusawirirana kweprotocol, kana kukanganisa kweanalog-to-digital dudziro. Mazuva ano madhijitari anoratidza anotarisira akanyatso kudzora data pakiti. Kana iyo data packet isipo, yakashatiswa, kana kutumirwa nekumhanya kusina kunaka, geji inongotadza kuzara.

Uyu mutungamiri anoputsa zvikonzero zvekushayikwa kweJ1939 chiratidzo chemafuta. Iwe unozodzidza nzira yekuparadzanisa kukanganisa pakati peiyo wiring yemuviri uye data link layer. Uyezve, isu tinotsanangura maitiro akasimba ekusarudza iyo chaiyo yekutsiva sensor kana analog-ku-CAN inoshandura. Iwe unogona kushandisa aya maonero kudzorera kugadzikana kwetiweki nekukurumidza.

Key Takeaways

• A J1939 mafuta mwero usingaratidzi pachiratidziro kazhinji unobva pakushaikwa kwekumisa maresitorendi, kusawirirana kwebaud rates (250k vs. 500k), kana kutadza kutepfenyura PGN 65276 (SPN 96).

• Kukwidziridza injini yechikuru kuenda kuHMI yedhijitari kunoda yakasarudzika analogi-ku-CAN inoshandura kana iyo yepakutanga inodzivirira inotumira ikachengetwa.

• Paunenge uchiongorora mutsva weSAE J1939 tank level sender, isa pamberi pezvikamu zvine kero inogadzirika kero uye yakaomeswa IP67+ ratings kune dzakaoma nharaunda.

• Kugadzirisa nyaya iyi zvine hurongwa kunodzivirira kutsiva kusingakoshi kwemadhijitari anoshanda zvizere.

Mutengo weBhizinesi weJ1939 Fuel Level Isingaratidzi

Marori anorema, zvikepe zvemugungwa, uye majenareta emagetsi emuindasitiri anovimba zvakanyanya nechaiyo telemetry data. Kushanda pasina data chaiyo yemafuta kunogadzira njodzi huru yekushanda muzvikamu zvese izvi. Iwe unotarisana nenjodzi yekumhanya kwemafuta munzvimbo dziri kure uye nguva isingatarisirwe yekudzikira panguva yekushanda kwakakosha. Injini dzedhiziri dzinonyanya kukuvadzwa nenzara yemafuta. Kumhanya tangi hombe yedhiziri yakaoma zvachose kazhinji kunokonzeresa kuvharika kwemhepo-kukiya mujekiseni system. Kubuda ropa mitsara yemafuta ekudzvinyirira kwakanyanya kunoda kupindira kwakakura kwemuchina, kumanikidza iyo asset isina mhepo kwemaawa.

Vashandi vanowanzonongedza zvigunwe padhijitari inodhura kana geji dzakundikana. Vanokanganisa nekukanganisa HMI skrini kana kutadza chaiko kwakavanzwa mukati meiyo wiring. Muzviitiko zvakawanda, iwe uchawana iri nyore wiring harness kukanganisa kunokonzera kubuda. Iyo isina kurongeka network node kana pini yakaora inogonawo kukonzera iyo chaiyo isina chinhu skrini. Kupomera skrini kunotungamira kune kutambisa kuongororwa kuongororwa uye kushushikana kusingaperi kwevashandi vekuchengetedza.

Kugadzirisa kwakabudirira kunotanga kuenderera, kugadzikana mafuta data kutepfenyura mubhazi rese. Iyo network inofanirwa kutumira data pane chaiyo identifier pasina kuzeza. Iwe unofanirwa kuona zvachose pasina network kudhumhana pane ako ekuongorora maturusi. Iyo sisitimu inofanirwa kubvisa zvachose chero inogara ichidimbura kana zvikanganiso zvenguva. Kuita izvi kunovimbisa kuvimbika kwakanyanya uye kudzoreredza kuvimba kwevashandisi mumageji avo edhijitari.

Physical Layer vs. Data Link: Diagnosing the Disconnect

Kuongorora chikonzero nei uine a J1939 mafuta mwero usingaratidzi kunoda kupatsanura network kuita mahafu maviri akasiyana. Iwe unofanirwa kuongorora iyo yemuviri wiring hardware uye yedhijitari protocol software zvakasiyana. Kusanganisa aya matanho ekugadzirisa matambudziko anoparadza yakakosha nguva yekuongorora.

Kuparadzanisa Iyo Yemuviri Layer (Wiring uye Hardware)

Iyo yemuviri layer inotakura ma impulses emagetsi pakati pema controller. Kana nheyo iyi ikakundikana, hapana data yedhijitari inosvika pakuratidzira unit.

• Termination Resistors: CAN network inoda chaizvo 120-ohm resistors pamativi ese maviri emusana mukuru. Zvipopotera zvisipo zvinokonzeresa kutarisisa kwechiratidzo pamwe newaya. Iyi ratidziro inokwenya data pakiti uye inodonhedza iyo data yemafuta zvachose. Gara uchishandisa dijitari multimeter kuyera kuramba kuyambuka CAN Yakakwirira uye CAN Yakaderera. Inofanirwa kuverenga ingangoita 60 ohms kana sisitimu ichidzikiswa.

• Harness Kutendeseka: Ongorora nzira yekuisa waya nekungwarira padivi pechasisi kana hull. Tarisa kune akapinyiwa CAN High kana CAN Low waya pedyo nemabulkheads. Iwe unofanirwawo kuongorora iyo huru yepasi yekubatanidza kumusoro we sensor. Nzvimbo yakakanganiswa inogadzira magetsi emagetsi ekubvisa. Izvi zvinobvisa zvinodzivirira transceiver chip kubva pakuverenga masaini akasiyana nemazvo.

• Connector Corrosion: Tarisa majoini egirinhi oxidation. Kupinda kwemvura paplug kunoparadza akatetepa CAN voltages. Chenesa mapini uye shandisa dielectric girisi kudzivirira hunyoro mune ramangwana.

Kuparadzanisa iyo Protocol Layer (Data uye Software)

Kana iyo wiring bvunzo yakanyatso nzwika, nyaya yacho inowanzovanda mu data layer. Zvisizvo zveSoftware zvinowanzoitika panguva yekuvandudza kwemidziyo yemashure.

• Baud Rate Mismatches: Network node dzinofanirwa kutaura nekumhanya chaiko. Kana yako huru injini network ichimhanya pa500 kbps, asi yekutsiva sensor inotepfenyura pa250 kbps, kutaurirana kunotadza pakarepo. Chiratidziro hachikwanise kupatsanura mapaketi edata anononoka. Iwe uchaona blank skrini kana yakakomba yekutaurirana nguva yekutadza kukanganisa pane dash.

• PGN uye SPN Verification: The standard industry identifier for Dash Display fuel level is Parameter Group Number (PGN) 65276. Iyi message chaiyo inoshandisa Suspect Parameter Number (SPN) 96. Unoda yakatsaurirwa CAN analyzer tool kuti uone izvi. Batanidza mukati meiyo diagnostic port uye tarisa iyo mhenyu traffic. Kana PGN 65276 isipo, sensor haisi kungoitumira.

• FMS Gateway Kusefa: Fleet applications dzinowanzo shandisa Fleet Management Standard (FMS) gedhi module. Iri gedhi rinopatsanura zvakachengeteka bhazi reinjini kubva kune telematics rekubika bhazi. Ita shuwa kuti gedhi harisi kuita kusefa chiyero chemafuta PGN isati yambosvika padhibhodhi.

Iyo Retrofit Dambudziko: Kusunga Analog Senders kune Digital Displays

Ekare injini dzedhiziri dzinotsamira pane yakapusa, makumi emakore-ekare tekinoroji yekuyera mafuta. Ivo vanowanzo shandisa vanopokana analog vanotumira akavakwa akatenderedza inotsvedza mechaniki inoyangarara. Ava vanotumira vanoburitsa mbishi akasiyana siyana ekupikisa seyeAmerican standard 240-33 ohms kana yeEuropean standard 0-190 ohms. Mazuva ano J1939 anoratidza anongonzwisisa akaomesesa edhijitari mapaketi. Ivo havagone kuverenga iyi mbishi yemagetsi kuramba zvakananga, ichigadzira yakakosha hardware kusawirirana.

Solution Category: Analog-to-CAN Converters

Iwe unogona kusada kudonhedza tangi hombe reindasitiri nekukasira. Iwe unogona kusarudza kusiya iyo iripo analog unit zvizere munzvimbo. Iyo analog-ku-J1939 gedhi inogona kudhijita iyo iripo analog chiratidzo. Iyi diki, inline module inoshanda semuturikiri akangwara pakati pemutumiri wekare nedhijitari kuratidzwa kutsva. Iyo inoverenga kuramba uye inoshandura kuita inoshanda CAN packet.

Nekudaro, iwe unofanirwa kungwarira zvakanyanya panguva yekutenga maitiro. Dzivisa zvinochipa, zvisina mabranded converters kubva kugeneric online marketplaces. Ivo vanowanzo ratidza hardcoded source kero dzausingakwanise kuchinja. Aya makero akaomeswa anowanzo kupesana nearipo Engine Control Units (ECUs) kana madhiraivha ekutapurirana. Kunetsana kwekero uku kunotungamira mukudhumhana kwenetiweki, kugogodza masisitimu akakosha kunze kwenyika.

Solution Category: Yakananga Digital Replacement

Iyo yakachena uye yakavimbika nzira yekudzorera inosanganisira yakazara Hardware kutsiva. Iwe unobvisa zvachose yekare, mechanical resistive unit kubva mutangi. Iwe wobva waisa yekuzvarwa, yakasimba-nyika CAN bhazi mafuta level sensor . Iyi kusimudzira inobvisa zvachose iyo middleman converter bhokisi. Iyo itsva unit inotepfenyura mapaketi edhijitari zvakananga kumusana mukuru. Kunyange ichida kuwana tangi yemuviri yekumisikidza, inovandudza zvakanyanya kuvimbika kwetiweki uye kurongeka kwedata.

Kuongorora Replacement SAE J1939 Tank Level Sender

Kana diagnostics yako inongedza kune yakafa zvachose sensor, iwe unofanirwa kusarudza yekutsiva unit nekuchenjera. Kwete zvose SAE J1939 tank level sender inoita zvakaenzana munzvimbo dzakaoma, dzinodedera.

Measurement Technology

Vatengi vanowanzo sarudza pakati pemazuva ano capacitive dhizaini uye yechinyakare tsanga switch modhi. Capacitive sensors inopa inoenderera, yakakwirira-resolution kuverenga nekuyera dielectric shanduko yemvura pachayo. Iyi yemukati software yekugadzirisa inobvisa iyo yechisimba kutsika kwaunoona semafuta anotsvedza panguva yehasha yekufambisa. Ivo vakakwirisa zvakanyanya kune yakakwirira-chaiyo CAN bhazi yekubatanidza. Reed switches inotsamira pane yemuviri magineti inoyangarara inotsvedza pamusoro pebhodhi redunhu. Vanongovandudza kuverenga kana iyo inoyangarara ichipfuura chaiyo magineti nguva.

Configuration Flexibility (Yakakosha kune BOF Sarudzo)

Iwe unoda yakanyanya kurongeka inochinjika kana uchibatanidza Hardware nyowani mune iripo ecosystem. Kutsvaga kero kwakakosha pakushanda kwakaringana, kusina kukanganisa. Zvibvunze mibvunzo mishoma inokosha zvikuru usati watenga. Unogona here kushandura iyo sensor's Source Kero uchishandisa yakajairwa yekumisikidza chishandiso? Unogona here kuenzanisa iyo yemukati tangi mbiri kune isina kujairika kana tsika matangi maumbirwo? V-hull marine matangi uye akanyanya kutsika matangi echigaro anoda tsika volumetric mepu. Kana iyo sensor isina kugona kuronga, inogona kutaurira hafu-izere tangi zvisizvo nekuda kweiyo tangi isinganzwisisike geometry.

Durability uye Compliance Standards

Kuiswa chisimbiso kwezvakatipoteredza kunopedzisira kwaraira hupenyu hwemugungwa uye inorema-basa masensa. Tarisa chaiyo, yakanyorwa kutevedzera iyo SAE J1939 standard. Iwe zvakare unoda yakajairika CE uye RoHS certification kuti uve nechokwadi chekuchengetedza magetsi. Teerera zvakanyanya kune zviri pamutemo Ingress Dziviriro zviyero pane iyo spec sheet. Iwe unotoda IP67 kana IP68 yekuvharisa kwezvakatipoteredza kuchengetedza yemukati wedunhu. Mvura ingress inoramba iri iyo mhedziso inotungamira chikonzero chekufa kwema sensor nguva isati yakwana mumunda.

Kuita Kuenzanisa kweFuel Sender Technologies

Implementation Realities uye Inotevera Matanho

Kutevera nhevedzano ine musoro, yakarongeka inochengetedza maawa asingaverengeki ekuvhiringidzika. Shandisa aya matanho chaiwo ekuongorora kuti udzorere mashandiro ako ekuratidzira zvine hurongwa.

1. Tarisa iyo CAN Bhazi Traffic: Usati watenga chero hardware nyowani, plug J1939 kodhi yekuverenga muchiteshi chikuru chekuongorora. Iwe unogona zvakare kushandisa yakajairwa USB CAN sniffer pane laptop. Tarisa zvakananga SPN 96 mune data rwizi. Kana iripo mubhazi, sensor inoshanda zvakakwana. Chiratidziro chakangogadziriswa zvisizvo uye chinoda kuvandudzwa kwesoftware. Kana iyo pakiti isipo zvachose, sensor kana wiring yakundikana.

2. Verify Network Architecture: Ita shuwa kuti yako ichangobva kuiswa J1939 mafuta level sensor inobatanidza kune chaiyo musana. Vazhinji vanoiisa newaya mubhazi rechipiri netsaona. Ichi chikanganiso chakajairika mune yakaoma marine NMEA 2000 uye J1939 hybrid setups. Chiratidziro hachikwanisi kuvhara gap pasina gedhi rakatsaurirwa.

3. Ongorora Kumisa Kupokana: Dzima ese ebhatiri simba kune sisitimu. Probe iyo CAN Yakakwira uye CAN Yakaderera pini ine multimeter. Ita shuwa kuti unoona 60 ohms. Kana iwe ukaona 120 ohms, urikupotsa inomisa resistor pane imwe mugumo webhazi. Kana iwe ukaona 40 ohms kana zvishoma, iwe une zvakawanda zvinopikisa zvakaiswa.

4. Pfupiso Yekugadzirisa: Ongorora kuwanikwa kwetangi rako nemazvo. Kana tangi iri nyore kupinda kubva kumusoro, tenga yekuzvarwa J1939 capacitive fluid level sensor. Iyi nzira inopa kuvimbika kwenguva refu. Kana tangi yakavharwa zvachose kana isingasvikike pasi pevhu rinorema, tenga yemhando yepamusoro, inorongwa analog-to-J1939 chiratidzo chekushandura panzvimbo.

Mhedziso

Kudzoreredza kwakakosha telemetry data kunoda yakarongeka yekuongorora nzira kwete kungotsiva chikamu. Iwe unofanirwa kuona hukama hwepanyama uye magadzirirwo eprotocol usati wabata iyo chaiyo tank hardware. Kana watarisana nekusawirirana kweanalogi, sarudza emhando yepamusoro hurongwa hwemagedhi ekuchengetedza network kutendeseka. Kuti uwane kutsiva kwakazara, tungamira solid-state capacitive tekinoroji kuvimbisa yakanyanya kurongeka chaiyo. Gara uchisimbisa yako network baud mitengo uye sosi kero panguva yekupedzisira yekuisa chikamu. Kutevera aya madhiraivha chaiwo kunoita kuti zviratidziro zvako zvedhijitari zvinopa chaiyo, isingakanganiswe data rekushandisa kwenguva refu.

FAQ

Q: Chii PGN inoshandiswa J1939 mafuta pamwero?

A: Data yezinga remafuta inowanzoparidzirwa pasi peParameter Group Number (PGN) 65276. Iyi PGN chaiyo inoenderana nebasa reDash Display. Mukati meiyi meseji packet, network inoshandisa Suspect Parameter Number (SPN) 96 kumiririra Fuel Level 1 nemazvo.

Mubvunzo: Ndinogona kubatanidza anoroji mafuta anotumira zvakananga kune J1939 kuratidza?

A: Kwete, haugone kuzvibatanidza zvakananga. Yemazuva ano J1939 inoratidza chete maitiro edhijitari CAN mameseji. Analog vatumiri vanobuda akasiyana magetsi kuramba se240-33 ohms. Iwe unofanirwa kuisa yakasarudzika analog-ku-CAN gedhi. Iyi shanduri inoturikira iyo mbishi yemagetsi kuramba kuita yakanyatsofometwa edhijitari mapaketi.

Mubvunzo: Sei mwero wemafuta wangu uchidonha kusvika pa zero padhijitari?

A: Madonhwe epakati anowanzo ratidza nyaya dzemuviri kwete masensa akafa zvachose. Iwe unofanirwa kutarisa kushayikwa 120-ohm kumisa resistors pane CAN musana kutanga. Tevere, ongorora tambo huru yeyakasununguka CAN Yakakwirira kana CAN Yakaderera wiring yekubatanidza. Pakupedzisira, simbisa kubatana kwepasi kumusoro we sensor.

Mubvunzo: Ini ndinoda 250k kana 500k baud rate sensor?

A: Izvo zvinoenderana nemotokari yako chaiyo kana ngarava network yekuvaka. Yakawanda nhaka inorema-basa J1939 network inoshanda pa250 kbps. Nekudaro, matsva emagetsi masisitimu anowanzo kutamira kune nekukurumidza 500 kbps kumhanya. Iwe unofanirwa kuenzanisa iyo nyowani sensor's baud mwero chaizvo kune yako iripo network kudzivirira kutadza kutaurirana.