Ethernet VS bas na gargajiya

1) 1TPCE = Daya (1) Twisted Biyu 100 Megabit (C = karni = 100) Ethernet 1 Twisted biyu na USB 100MEthernet

2) RTPGE=Rage Twisted Biyu Gigabit Ethernet

3) GEPOF = Gigabit Ethernet Sama da Fiber Optical Fiber

4) 100BASE-T1 = 100 Megabit Baseband One Pair 100M Ethernet (1 Twisted pair)

5) 1000BASE-T1 = 1 Gigabit Baseband Daya Biyu 1000M Ethernet (1 Twisted biyu)

6) 1000BASE-RH = Gigabit Ethernet Sama da Fiber Optical Fiber

7) BUDE/BUDE Alliance = Haɗin kai na hanyar sadarwa na Ethernet guda ɗaya

8) OABR = (OPEN Alliance) BroadR-Reach

Sunan farko don 100BASE-T1, lokacin da IEEE bai shiga ba kuma Open Alliance ya gabatar da fasahar BroadR-Reach Broadcom zuwa sashin kera.

9) TSN - Cibiyar Sadarwar Lokaci

10) AVB - Fasahar haɗa sauti / bidiyo

Menene 100BASE-T1

100BASE-T1 haɗin kai ne akan fasahar Ethernet data kasance.

1) IEEE 100BASE-TX

- Duplex simplex sadarwa

- MLT-3 (watsawa da yawa) -> 125Msps (samfuran miliyan / na biyu) 65 ~ 80MHz bandwidth)

- Biyu murɗaɗɗen nau'i-nau'i - babu kuskuren gyara lambar

- Babu fasahar soke echo da crosstalk a cikin DSP

Daidaiton Bayar da Shawara (DFE)

2) IEEE 1000BASE-T - cikakkiyar sadarwar duplex

- 4D-PAM5 -> 125Msps (samfuran miliyan a sakan daya) 65 ~ 80MHz bandwidth) - nau'i-nau'i masu murdawa huɗu

- Bangaren amsawa tace

- Ƙarin matakan gyara kurakurai

- DSP yana da fasahar soke amsawar murya da magana

Daidaiton Bayar da Shawara (DFE)

3) IEEE 100BASE-T1 - cikakkiyar sadarwar duplex - PAM3 - 66.7Msps (samfuran miliyan a sakan daya) bandwidth 27MHz - guda biyu masu murdawa.

—— Fasahar soke Echo —— Daidaituwar Feedback (DFE)

3. Ethernet VS bas na gargajiya

3.1 Sadarwar cibiyar sadarwa ta tushen sauyawa

1) Dukkan nodes akan bas ɗin gargajiya suna haɗa su da matsakaicin watsawa iri ɗaya; misali, ana iya haɗa nodes masu yawa (ECUs) zuwa bas ɗin CAN guda ɗaya, kuma siginar lantarki akan bas ɗin CAN na iya shafar duk tashoshi da ke haɗe da bas.

Gabaɗaya, muna kiran CAN a matsayin CAN Bus ko CAN Network.

2) Ethernet hanya ce ta hanyar sadarwa ta hanyar sadarwa da aka canza, inda duk nodes ɗin tashar dole ne a haɗa su ta hanyar maɓalli kuma duk bayanan da aka watsa dole ne a tura su ta hanyar switches. kar a koma ga bas ɗin Ethernet, sai dai zuwa cibiyar sadarwar Ethernet.

4. Aikace-aikacen Ethernet akan jirgi

4.1 Duba hoton iska - haɗin sauri mai sauri

1) Broadcom BroadR-Reach, 100 Mbit / s, cikakken duplex, murɗaɗɗen biyu - ya maye gurbin kayan aikin waya masu kariya masu tsada

- Sadarwa ta hanyoyi biyu

2) Yi amfani da babban bandwidth

3) Yawo na bidiyo na tushen MAC tare da tsauraran buƙatun lokaci

4) Ayyukan ADAS da aka haɓaka (ƙarin kyamarori, radar radar millimeter, radar laser, da sauransu) - babban ƙuduri da ƙimar firam, ƙarancin matsawa

- Ana buƙatar adadin watsawa na 1000Mbit/s da sama

4.2 Ethernet azaman hanyar sadarwar kashin baya na cikin abin hawa

Bus ɗin mota na gaba zai maye gurbin CAN bas tare da Ethernet a matsayin cibiyar sadarwar kashin baya, kuma subnets za su ƙunshi masu kula da yanki da yawa. Kowane yanki na aiki yana ba da mai sarrafa yanki, kuma haɗin haɗin tsarin a cikin kowane yanki na iya amfani da CAN kuma Motocin sadarwa na FlexRay.An haɗa masu sarrafa yanki daban-daban ta hanyar Ethernet mafi girma a matsayin cibiyar sadarwar kashin baya, kuma ana samun musayar bayanai ta hanyar ƙofofin Ethernet, don haka tare da kafa tsarin gine-ginen E/E dangane da masu kula da yanki.

4.3 A kan-jirgin Ethernet don watsa wutar lantarki

Power over Ethernet (POE) wata fasaha ce da za ta iya watsa bayanai akan igiyoyi masu murɗaɗɗen igiyoyi yayin da ake sarrafa na'urori masu ƙarewa a lokaci guda, kawar da buƙatar igiyoyin wutar lantarki na waje don tashoshi da kuma rage haɗakar wutar lantarki.

Babban halayen samar da wutar lantarki na daidaitaccen tsarin samar da wutar lantarki na POE sune:

1) Wutar lantarki yana tsakanin 44-57V, tare da ƙimar al'ada na 48V.

2) Matsakaicin izini na yanzu shine 550mA, kuma matsakaicin farawa na yanzu shine 500mA.

3) A halin yanzu aiki na yau da kullun shine 10-350mA, kuma abin ganowa na yanzu shine 350-500mA.

4) A ƙarƙashin yanayi mara nauyi, matsakaicin buƙatun halin yanzu shine 5mA.

5) Samar da matakan buƙatun wuta guda biyar don na'urorin PD (Power Device) daga 3.84 zuwa 12.95W, tare da matsakaicin 13W.

4.4 Ayyukan mara waya na kan-board Ethernet Wireless Aiki shine wani fa'ida na kan-jirgin Ethernet.Har ila yau, WiFi yana da bambance-bambancen don amfani da mota - WAVE (Wireless Access in Vehicle Environments) . Gabatarwar Ethernet a kan jirgin babu shakka zai zama mafi kyawun haɓaka don haɓaka gabatarwar fasahar sadarwar mara waya WAVE a cikin filin mota, wanda ke ba da tushe na jiki. don aiwatar da sauti da bidiyo da taswirori masu mahimmanci a cikin sadarwa ta ainihi, da kuma samar da ƙarin sararin samaniya don aikace-aikacen fasahar V2X.