4 Hom Tsheb Npav
Lub tsheb txawj ntse tau txhawb txoj kev vam meej thiab kev loj hlob ntawm cov khoom siv hluav taws xob tsheb hauv tsheb, thiab cov khoom siv hluav taws xob thiab hluav taws xob tau ua rau muaj kev hloov pauv tsis tau. Nws lub hauv paus yog kev hloov pauv ntawm cov ntaub ntawv hauv tsheb sib kis thiab tswj txoj hauv kev. Raws li lub cev embodiment ntawm hluav taws xob thiab hluav taws xob architecture, qhov tseem ceeb ntawm lub tsheb npav hauv tsheb yog qhov tseeb. piv txwv.
1. CAN tsheb npav
CAN tsheb npav, tseem hu ua tsheb npav tsheb, hu ua "chaw tswj cheeb tsam network", uas yog ib qho kev sib txuas lus sib txuas uas tuaj yeem pab txhawb kev faib tswj thiab tswj lub sijhawm. Nws txuas txhua qhov kev tswj hwm ib leeg hauv qee daim ntawv (feem ntau lub hnub qub) los tsim ib qho kev ua tiav.
Lub tsheb npav CAN tau txais ob-xaim xaim ntawm 5V sib txawv teeb liab, tus nqi theoretical tuaj yeem ncav cuag 1M / s, thiab lub tsheb feem ntau yog 125 ~ 500Kb / s.
2. LIN Bus
LIN yog tus nqi qis, qis-ceev kev sib txuas lus network raws tu qauv rau "sensor / actuator tswj" sib koom ua ke los ntawm Motorola thiab Audi thiab lwm lub tuam txhab, raws li tus nqi qis rau qis-ceev CAN.
Lub tsheb npav LIN tau txais ib daim ntawv xa tawm ib leeg, thiab siv lub tswv yim ntawm ib tus tswv thiab ntau tus qhev. Lub tsheb npav theem feem ntau yog 12V, thiab qhov siab tshaj plaws kis tau tus mob yog txwv rau 20kbps. Vim muaj kev txwv lub cev txheej, LIN network tuaj yeem txuas mus txog 16 nodes.
Lub LIN network feem ntau tsis muaj nyob ntawm nws tus kheej hauv lub tsheb, thiab feem ntau txuas nrog cov txheej txheem sab saud CAN network los tsim CAN-LIN qhov rooj ntawm qhov rooj.
3. Flexray tsheb npav
Flexray tsheb npav yog tus qauv kev sib txuas lus tshiab ua ke tsim los ntawm cov tuam txhab xws li BMW, Philips, Freescale thiab Bosch. Nws muaj qee qhov zoo hauv lub sijhawm tiag tiag, kev ntseeg tau thiab yoog raws.
Flexray tuaj yeem siv rau hauv lub tsheb npav passive thiab hnub qub network topologies, lossis kev sib xyaw ntawm ob. Ob leeg topologies txhawb nqa dual-channel ECUs uas sib koom ua ke ntau qhov kev ua haujlwm-theem kom txuag tau cov nqi tsim khoom thiab txo qhov nyuaj. Lub dual-channel architecture muab redundancy thiab muab ob npaug rau qhov muaj bandwidth. Qhov siab tshaj plaws cov ntaub ntawv hloov pauv tus nqi ib channel yog 10Mbps.
Tam sim no, Flexray feem ntau yog siv nyob rau hauv powertrain systems thiab active kev ruaj ntseg systems, raws li zoo raws li kev tswj-los ntawm-wire systems.
Txoj kev sib kis: Twisted khub cables yog siv nyob rau hauv FlexRay system, thiab txhua tus ntawm ob txoj kab muaj ob kab.
4. TSHUAJ tsheb npav
Feem ntau sawv cev rau "Multimedia Transmission System", uas yog cov ntaub ntawv tsheb npav tshwj xeeb tsim tshwj xeeb rau kev siv hauv tsheb thiab ua haujlwm rau kev siv multimedia.
Cov chaw tswj hwm ntawm lub npav MOST yog txuas nrog lub nplhaib cov ntaub ntawv tsheb npav, uas tsuas yog xa cov ntaub ntawv hauv ib qho kev coj. Ib chav tswj hwm muaj 2 fibers optical, ib qho rau lub transmitter thiab lwm yam rau lub receiver.
