Pali machitidwe ambiri omwe amagwiritsa ntchito awiriawiri opotoka m'magalimoto, monga makina a jakisoni amagetsi, machitidwe omvera ndi makanema osangalatsa, makina a airbag, CAN networks, ndi zina zotero. Mawiri opotoka amagawidwa kukhala awiriawiri opotoka otetezedwa ndi osatetezedwa osatetezedwa.Chingwe chotchinga chotchingidwa chimakhala ndi chitsulo chotchinga pakati pa chingwe chopindika ndi envelopu yotchinga yakunja.Chotchinga chotchinga chimatha kuchepetsa ma radiation, kupewa kutayikira kwa chidziwitso, komanso kupewa kusokoneza kwamagetsi akunja.Kugwiritsa ntchito mapeya opotoka otetezedwa kumakhala ndi chiwopsezo chachikulu chotenga kachilomboka kuposa mapeyala opotoka ofanana osatetezedwa.
Mawaya opotoka otetezedwa, mawaya amawaya nthawi zambiri amagwiritsidwa ntchito mwachindunji ndi mawaya omalizidwa otetezedwa.Kwa awiriawiri opotoka osatetezedwa, opanga omwe ali ndi luso lowongolera nthawi zambiri amagwiritsa ntchito makina opotoka popotoza.Pakukonza kapena kugwiritsa ntchito mawaya opotoka, magawo awiri ofunikira omwe amafunikira chidwi chapadera ndi mtunda wokhotakhota komanso mtunda wosapindika.
| |potoza phula
Utali wopindika wa awiri opotoka umatanthawuza mtunda wa pakati pa mafunde awiri oyandikana nawo kapena mafunde pa kondakitala yemweyo (atha kuwonedwanso ngati mtunda wapakati pa mfundo zopotoka molunjika mbali imodzi).Onani Chithunzi 1. Kupindika kutalika = S1 = S2 = S3.
chithunzi 1 phula la mawaya otsekeka
The anagona kutalika mwachindunji zimakhudza mphamvu kufala chizindikiro.Kutalika kosiyanasiyana kumakhala ndi mphamvu zosiyana zotsutsana ndi kusokoneza kwa zizindikiro za mafunde osiyanasiyana.Komabe, kupatula mabasi a CAN, miyezo yoyenera yapadziko lonse lapansi komanso yapakhomo safotokoza momveka bwino kutalika kwa mapeyala opotoka.The GB/T 36048 Passenger Car CAN Bus Physical Layer Technical Requirements imati mawaya a CAN ali kutali ndi 25±5mm (33-50 twist/mita), zomwe zimagwirizana ndi CAN lay kutalika zofunika mu SAE J2284 250kbps high-liwiro CAN yamagalimoto.yemweyo.
Nthawi zambiri, kampani iliyonse yamagalimoto imakhala ndi miyeso yake yokhotakhota yokhazikika, kapena imatsata zofunikira za kagawo kakang'ono kamene kamakhala ndi mtunda wokhotakhota wa mawaya opotoka.Mwachitsanzo, Foton Motor imagwiritsa ntchito winchi kutalika kwa 15-20mm;ma OEM ena aku Europe amalimbikitsa kusankha kutalika kwa winchi motsatira mfundo izi:
1. CAN basi 20±2mm
2. Chingwe cholumikizira, chingwe chomvera 25 ± 3mm
3. Kuyendetsa mzere 40±4mm
Nthawi zambiri, kupindika kwakung'ono, kumapangitsa kuti mphamvu yolimbana ndi kusokoneza kwa maginito, koma kukula kwa waya ndi kupindika kwa zinthu zakunja za m'chimake ziyenera kuganiziridwa, ndipo mtunda wokhota woyenerera uyenera kutsimikiziridwa. kutengera mtunda wotumizira ndi kutalika kwa chizindikiro.Pamene awiriawiri opotoka angapo aikidwa palimodzi, ndi bwino kugwiritsa ntchito awiriawiri opotoka okhala ndi utali wosiyana wa mizere yosiyana kuti muchepetse kusokoneza komwe kumadza chifukwa cholumikizana.Kuwonongeka kwa kutchinjiriza kwa waya komwe kumachitika chifukwa cholimba kwambiri kutalika kokhota kumawoneka pachithunzi pansipa:
Chithunzi 2 Kupindika kwa waya kapena kung'ambika chifukwa cha mtunda wokhota kwambiri
Kuphatikiza apo, kutalika kokhota kwa awiriawiri opotoka kuyenera kukhala kofanana.Kulakwitsa kwa mawu opindika kwa awiri opotoka kukhudza mwachindunji mulingo wake wotsutsana ndi kusokoneza, ndipo kusakhazikika kwa cholakwika chokhotakhota kungayambitse kusatsimikizika pakulosera kwa ma crosstalk opotoka.Zopindika za zida zopangira zida Kuthamanga kwamakona kwa shaft yozungulira ndi chinthu chofunikira kwambiri chomwe chimakhudza kukula kwa kuphatikiza kophatikizana kwa awiriwo opotoka.Iyenera kuganiziridwa panthawi yokhotakhota kupanga awiriwa kuti zitsimikizidwe zotsutsana ndi kusokoneza za awiri opotoka.
| |Mtunda wosapindika
Mtunda wosapindika umatanthawuza kukula kwa gawo losapindika la ma conductor opindika omwe amafunikira kugawanika akayikidwa mu sheath.Onani Chithunzi 3.
Chithunzi 3 Mtunda wosapindika L
Mtunda wosapindika sunatchulidwe pamiyezo yapadziko lonse lapansi.Muyezo wamakampani apanyumba QC/T29106-2014 "Technical Conditions for Automotive Wire Harnesses" imati mtunda wosapindika suyenera kupitilira 80mm.Onani Chithunzi 4. American standard SAE 1939 ikunena kuti mizere yopotoka ya CAN sayenera kupitirira 50mm mu kukula kosapindika.Chifukwa chake, malamulo amakampani apanyumba sagwira ntchito pamizere ya CAN chifukwa ndi yayikulupo.Pakadali pano, makampani osiyanasiyana amagalimoto kapena opanga ma waya amachepetsa mtunda wosapindika wa mizere yothamanga kwambiri ya CAN mpaka 50mm kapena 40mm kuti zitsimikizire kukhazikika kwa chizindikiro cha CAN.Mwachitsanzo, basi ya Delphi ya CAN imafuna mtunda wosapindika wosakwana 40mm.
Chithunzi 4 Mtunda wosasunthika womwe wafotokozedwa mu QC/T 29106
Kuonjezera apo, panthawi yopangira mawaya, pofuna kuteteza mawaya opotoka kuti asatuluke ndikupangitsa mtunda waukulu wosasunthika, malo osasunthika a mawaya opotoka ayenera kuphimbidwa ndi guluu.Muyezo waku America wa SAE 1939 umanena kuti kuti ma kondakitala akhale opotoka, machubu ochepetsa kutentha ayenera kuikidwa pamalo osapindika.Muyezo wamakampani apanyumba QC/T 29106 umafotokoza kugwiritsa ntchito tepi encapsulation.
| |Mapeto
Monga chonyamulira chotumizira ma siginecha, zingwe zopotoka zimayenera kuwonetsetsa kulondola komanso kukhazikika kwa kufalikira kwa ma siginecha, ndipo ziyenera kukhala ndi luso loletsa kusokoneza.Kupindika kwa phula, kusinthasintha kwa phula ndi mtunda wosasunthika wa waya wokhotakhota zimakhudza kwambiri mphamvu zake zotsutsana ndi kusokoneza, choncho ziyenera kuchitidwa chidwi panthawi yokonza ndi kukonza.
Nthawi yotumiza: Mar-19-2024