Ethernet VS tsoos tsheb npav

1) 1TPCE = Ib (1) Twisted Pair 100 Megabit (C = century = 100) Ethernet 1 Twisted khub cable 100MEthernet

2) RTPGE = Txo Twisted Pair Gigabit Ethernet

3) GEPOF = Gigabit Ethernet Tshaj Plastic Optical Fiber

4) 100BASE-T1 = 100 Megabit Baseband Ib Pair 100M Ethernet (1 twisted khub)

5) 1000BASE-T1 = 1 Gigabit Baseband Ib Pair 1000M Ethernet (1 twisted khub)

6) 1000BASE-RH = Gigabit Ethernet Tshaj Plastic Optical Fiber

7) OPEN/OPEN Alliance = Ib Pair Ethernet Network Alliance

8) OABR = (OPEN Alliance) BroadR-Reach

Lub npe thaum ntxov rau 100BASE-T1, thaum IEEE tsis koom nrog thiab Open Alliance tau qhia txog Broadcom's BroadR-Reach thev naus laus zis rau kev lag luam tsheb.

9) TSN – Sijhawm Sensitive Network

10) AVB – Audio/Video bridging technology

Dab tsi yog 100BASE-T1

100BASE-T1 yog kev koom ua ke raws li Ethernet thev naus laus zis uas twb muaj lawm.

1) IEEE 100BASE-TX

- Duplex kev sib txuas lus yooj yim

- MLT-3 (ntau-theem kis tau tus mob) -> 125Msps (lab qauv / thib ob) 65 ~ 80MHz bandwidth)

- Ob tug twisted khub - tsis muaj qhov yuam kev kho coding

- Tsis muaj ncha thiab crosstalk tshem tawm thev naus laus zis hauv DSP

Kev Txiav Txim Siab Sib npaug (DFE)

2) IEEE 1000BASE-T - tag nrho duplex kev sib txuas lus

- 4D-PAM5 -> 125Msps (lab qauv ib ob) 65 ~ 80MHz bandwidth) - plaub twisted khub

- Ib nrab teb cov lim kis

- Ntau theem ntawm kev ua yuam kev kho coding

- DSP muaj ncha thiab crosstalk tshem tawm tshuab

Kev Txiav Txim Siab Sib npaug (DFE)

3) IEEE 100BASE-T1 - tag nrho duplex kev sib txuas lus - PAM3 - 66.7Msps (lab qauv ib ob) 27MHz bandwidth - ib khub twisted

—— Echo tshem tawm thev naus laus zis —— Kev txiav txim siab tawm tswv yim Equilibrium (DFE)

3. Ethernet VS tsoos tsheb npav

3.1 Hloov-raws li kev sib txuas lus network

1) Tag nrho cov nodes ntawm lub tsheb npav ib txwm txuas nrog tib qhov sib kis nruab nrab; piv txwv li, ntau lub davhlau ya nyob twg (ECUs) tuaj yeem txuas rau ib lub tsheb npav CAN, thiab cov teeb liab hluav taws xob ntawm lub tsheb npav CAN tuaj yeem cuam tshuam rau txhua qhov txuas nrog lub tsheb npav.

Feem ntau, peb hu CAN li CAN Bus lossis CAN Network.

2) Ethernet yog ib txoj kev sib txuas lus sib txuas lus, qhov twg txhua lub davhlau ya nyob twg yuav tsum tau txuas nrog los ntawm cov keyboards thiab tag nrho cov ntaub ntawv xa mus yuav tsum tau xa los ntawm cov keyboards.In switched network kev sib txuas lus, ib lub network cable tsuas tuaj yeem txuas ob qhov chaw nres nkoj tsis muaj ceg. Yog li ntawd, peb feem ntau Tsis txhob xa mus rau Ethernet tsheb npav, tab sis theej rau Ethernet network.

4. Daim ntawv thov ntawm on-board Ethernet

4.1 Aerial duab saib - kev sib txuas ceev

1) Broadcom BroadR-Reach, 100 Mbit / s, tag nrho duplex, twisted khub - hloov kim shielded hlau harnesses

- Kev sib txuas lus ob txoj kev

2) Siv high bandwidth

3) MAC-raws li video streaming nrog lub sijhawm nruj

4) Txhim kho ADAS ua haujlwm (cov koob yees duab ntxiv, millimeter-yoj radar, laser radar, thiab lwm yam) - kev daws teeb meem siab thiab ncej tus nqi, compression tsawg

- Yuav tsum tau kis tus nqi ntawm 1000Mbit / s thiab siab dua

4.2 Ethernet ua lub pob txha caj qaum ntawm lub tsheb sab hauv

Lub tsheb npav yav tom ntej yuav hloov lub tsheb npav CAN nrog Ethernet raws li lub pob txha caj qaum, thiab cov subnets yuav tsim los ntawm ntau tus neeg tswj hwm lub npe.Txhua qhov chaw ua haujlwm tau muab nrog tus tswj hwm, thiab kev sib txuas ntawm cov tshuab hauv txhua lub npe tseem tuaj yeem siv CAN thiab FlexRay kev sib txuas lus tsheb npav.Different domain controllers yog txuas nrog los ntawm kev ua tau zoo dua Ethernet raws li lub caj qaum network, thiab cov ntaub ntawv pauv tau pom tau los ntawm Ethernet gateways, yog li sib koom ua ib qho E / E architecture raws li tus tswj hwm.

4.3 On-board Ethernet rau kev xa hluav taws xob

Lub hwj chim dhau Ethernet (POE) yog ib qho cuab yeej uas tuaj yeem xa cov ntaub ntawv hla cov kab sib tw sib tw thaum lub sijhawm sib txuas cov khoom siv kawg, tshem tawm qhov xav tau rau cov hlua hluav taws xob sab nraud rau lub davhlau ya nyob twg thiab txo qhov nyuaj ntawm cov khoom siv hluav taws xob.

Cov yam ntxwv tseem ceeb ntawm cov khoom siv hluav taws xob ntawm POE tus qauv siv hluav taws xob yog:

1) Qhov voltage yog nyob nruab nrab ntawm 44-57V, nrog tus nqi raug ntawm 48V.

2) Qhov siab tshaj plaws tam sim no yog 550mA, thiab qhov siab tshaj plaws pib tam sim no yog 500mA.

3) Cov kev khiav hauj lwm tam sim no yog 10-350mA, thiab qhov kev tshawb pom ntau dhau yog 350-500mA.

4) Nyob rau hauv tsis muaj-load, qhov siab tshaj plaws thov tam sim no yog 5mA.

5) Muab tsib theem ntawm lub zog thov rau PD (Power device) li ntawm 3.84 txog 12.95W, nrog rau qhov siab tshaj plaws ntawm 13W.

4.4 Wireless muaj nuj nqi ntawm on-board Ethernet Wireless muaj nuj nqi yog lwm qhov zoo ntawm on-board Ethernet.WiFi kuj muaj qhov sib txawv rau kev siv tsheb - WAVE (Wireless Access nyob rau hauv lub tsheb ib puag ncig).Qhov kev taw qhia ntawm on-board Ethernet yuav undoubtedly dhau los ua qhov zoo tshaj plaws catalyst rau kev txhawb nqa cov kev taw qhia ntawm wireless kev sib txuas lus technology WAVE mus rau hauv lub automotive teb, uas muab lub hauv paus ntawm lub cev. rau kev siv cov suab thiab video thiab cov duab qhia siab hauv kev sib txuas lus hauv lub sijhawm, thiab tseem muab qhov chaw xav ntau ntxiv rau kev siv V2X thev naus laus zis.