TCAN1042HGVDRQ1 SOP8 Electronic Components Distribution Chatsopano Choyambirira Choyesedwa Integrated Circuit Chip IC TCAN1042HGVDRQ1

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PHY ndi nyenyezi yomwe ikukwera pamapulogalamu apagalimoto (monga T-BOX) yotumizira ma siginali othamanga kwambiri, pomwe CAN akadali membala wofunikira kwambiri pakutumiza ma siginecha otsika.T-BOX yam'tsogolo iyenera kuwonetsa ID yamagalimoto, kugwiritsa ntchito mafuta, mtunda, njira, momwe magalimoto alili (zowunikira pazitseko ndi zenera, mafuta, madzi ndi magetsi, liwiro lopanda ntchito, ndi zina), liwiro, malo, mawonekedwe agalimoto. , kasinthidwe kagalimoto, ndi zina zambiri pamaneti wamagalimoto ndi magalimoto am'manja, ndipo kutumizirana ma data otsika kwambiri kumadalira munthu wamkulu wa nkhaniyi, CAN.

Basi ya CAN idayambitsidwa ndi Bosch ku Germany m'ma 1980s ndipo kuyambira pamenepo yakhala gawo lofunikira komanso lofunikira lagalimoto.Kuti akwaniritse zofunikira zosiyanasiyana zamagalimoto apagalimoto, basi ya CAN imagawidwa kukhala CAN yothamanga kwambiri komanso yotsika kwambiri CAN.high-speed CAN imagwiritsidwa ntchito makamaka poyang'anira machitidwe amagetsi omwe amafunikira ntchito zenizeni zenizeni, monga injini, zotumiza zokha, ndi magulu a zida.Low-speed CAN imagwiritsidwa ntchito makamaka pakuwongolera machitidwe a chitonthozo ndi machitidwe a thupi omwe amafunikira zochepa zenizeni zenizeni, monga kuwongolera mpweya, kukonza mipando, kukweza zenera, ndi zina zotero.M'nkhaniyi, tiyang'ana pa high-liwiro CAN.

Ngakhale CAN ndiukadaulo wokhwima kwambiri, imakumanabe ndi zovuta pamagalimoto amagalimoto.Mu pepalali, tiwona zovuta zina zomwe CAN ikukumana nazo ndikuwonetsa matekinoloje oyenera kuthana nawo.Pomaliza, zabwino zamapulogalamu a TI's CAN ndi zinthu zake "zolimba" zidzafotokozedwa mwatsatanetsatane.

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Chovuta chimodzi: Kukhathamiritsa kwa magwiridwe antchito a EMI

Pamene kachulukidwe kamagetsi m'magalimoto akuchulukirachulukira chaka chilichonse, ma electromagnetic compatibility (EMC) amagetsi amagalimoto amafunidwa kwambiri, chifukwa zida zonse zikaphatikizidwa munjira yomweyo, ndikofunikira kuwonetsetsa kuti ma subsystems akugwira ntchito momwe amayembekezera. , ngakhale m’malo aphokoso.Chimodzi mwazovuta zazikulu zomwe CAN imakumana nazo ndikuchulukirachulukira kwa mpweya womwe umachitika chifukwa chaphokoso wamba.

Moyenera, CAN imagwiritsa ntchito ulalo wosiyana kuti aletse kulumikizana kwa phokoso lakunja.M'zochita, komabe, ma transceivers a CAN sali abwino ndipo ngakhale asymmetry pang'ono pakati pa CANH ndi CANL imatha kutulutsa chizindikiro chofananira, chomwe chimapangitsa kuti gawo lodziwika bwino la CAN (mwachitsanzo, pafupifupi CANH ndi CANL) lisiye kukhala nthawi zonse. chigawo cha DC ndikukhala phokoso lodalira deta.Pali mitundu iwiri ya kusalinganika komwe kumabweretsa phokosoli: phokoso lotsika kwambiri lomwe limayambitsidwa ndi kusagwirizana pakati pa mayendedwe okhazikika amtundu wamba m'maiko otsogola ndi okhazikika, omwe amakhala ndi mitundu yambiri yaphokoso ndipo amawoneka ngati mndandanda wamitundu yosiyanasiyana. mizere yosiyana ya spectral;ndi phokoso lafupipafupi lomwe limabwera chifukwa cha kusiyana kwa nthawi pakati pa kusintha kwapakati pa CANH ndi CANL, zomwe zimakhala ndi ma pulses afupikitsa ndi zosokoneza zomwe zimachitika chifukwa cha kulumpha kwa data.Chithunzi 1 pansipa chikuwonetsa chitsanzo cha phokoso la CAN transceiver wamba.Black (channel 1) ndi CANH, wofiirira (channel 2) ndi CANL ndipo zobiriwira zimasonyeza kuchuluka kwa CANH ndi CANL, mtengo wake womwe ndi wofanana kuwirikiza kawiri ma voliyumu wamba wamba pa nthawi yomwe wapatsidwa.