O le a le Pasi Can?

A CAN faiga pasi e aofia ai ni nai mea taua vaega meafaigaluega, o lo'o faia e ta'ito'atasi se sao taua i le fa'amalosia o le fa'atuatuaina feso'ota'iga fa'asologa va o masini. O le malamalama i nei vaega e fesoasoani i inisinia ma tekinisia lelei le mamanuina, faʻapipiʻi, ma fofo faʻafitauli feso'ota'iga vaega e pulea faiga i talosaga eseese—mai su'esu'ega tau ta'avale ia fa'ainisinia fa'apisinisi.

1. Vaega Pulea Faaeletonika (ECU)

O le ECU ose masini fa'avae microcontroller e fa'atautaia le polokalame mo galuega fa'apitoa e pei o le fa'atonutonuina o afi, ABS, po'o moli. O se taavale e mafai ona aofia ai le tele o ECU, e fesoʻotaʻi uma i luga o le CAN feso'otaiga.

2. CAN Pule

O lenei iunite e taulimaina le fa'atatau o le CAN protocol, e aofia ai le fa'avasegaina o fe'au, su'esu'eina o mea sese, ma fa'atalanoaga. Tele microcontrollers fa'aonaponei ua fausia i totonu CAN pule, faafaigofieina le mamanu faiga.

3. MAFAI ONA Transceiver

O le E mafai transceiver fa'aliliuina fa'ailoga fa'akomepiuta mai le pule i totonu fa'ailoga eletise eseese i luga ole pasi CAN (CAN High ma CAN Low). E maua foi faailoilo mai le pasi ma toe pasi atu i le pule. E mautinoa e le transceiver malosi fa'asalalauga fa'amatalaga e oo lava i totonu siosiomaga pisapisao.

4. Uaea pasi ma faamutaina

E masani ona fa'aoga uaea pasi CAN uaea paipa mimilo mo le teena o le pisa. O pito uma o le pasi e tatau ona iai se 120-ohm fa'amuta tete'e e puipuia ai le fa'aalia o fa'ailoga ma fa'amautinoa le fa'amaoni o fa'ailo.

Autu CAN Bus Topology Aotelega:

E ala i le tuufaatasia o vaega nei, a CAN faiga pasi ofo atu se scalable, fofo taugofie mo feso'ota'iga taimi moni i totonu o faiga fa'apipi'i. O nei poloka faufale e fai ma faavae mo le anoanoai ta'avale, faafomai, ma alamanuia CAN pasi talosaga.

CAN Bus Protocol Structure

O le CAN pasi fa'atonuga fa'amatalaina se fa'atuatuaina, maualuga fa'amaoni auala feso'ota'iga fa'aoga lautele i feso'ota'iga ta'avale, fa'atonuga tau alamanuia, ma faiga fa'apipi'i. I lona autu, CAN o se fa'atonuga fa'atatau i fe'au—nodes e auina atu fe'au e iai ID ma fa'amaumauga, ae le o tuatusi tuusa'o. O lenei fausaga ua faaleleia fetuutuunai, fa'atinoga taimi moni, ma scalability faiga.

Ituaiga o CAN Frames

1. Fa'amatalaga Fa'amatalaga - O loʻo tauaveina faʻamatalaga moni poʻo faʻatonuga

2. Fa'avaa Mamao - Talosagaina faʻamatalaga mai se isi node

3. Fa'avaa Sese – Faailoga se mea sese ua iloa i luga o le pasi

4. Ova le Fa'avaa – Tuuina atu se taimi faaopoopo a o lei faia se tali

Fa'atonuga vs. Fa'ava'a Fa'alautele

Ta'itasi MAFAI fa'avaa e mulimuli i se faauigaina fausaga tulaga-maui:

• Amata o le Fa'avaa (SOF): Amataina fe'au fe'au

• Fa'ailoa: Fa'ailoa ai le fa'amuamua o fe'au (maualalo tau = maualuga maualuga)

• Pulea Field: Fa'amaoti le umi o fa'amaumauga (0–8 paita ile CAN masani)

• Fa'amatalaga Field: Taofi le uta fe'au

• CRC Field: Faʻamautinoa le faʻamaoni o faʻamatalaga

• ACK Field: Faʻamaonia le mauaina o feʻau e isi nodes

• Fa'ai'uga o le Fa'avaa (EOF): Faailoga le mae'a o fe'au

Bit Taimi ma Fa'amaopoopo

O le sina taimi e fa'amatala ai le umi e fa'atumauina ai vaega ta'itasi ile feso'otaiga ma a'afia ai paud rate (e masani lava 125 kbps i le 1 Mbps). Fa'atasi lelei i le va o nodes e mautinoa ai le sa'o sa'o fa'ata'ita'iga, e o'o lava i le isi itu siosiomaga pisapisao eletise.

E ala i le lagolagoina faamasinoga, iloa sese, ma fa'amuamua le fa'avaa, o le CAN fa'atonuga fa'atonu e mafai ai ona fa'amautu, fa'alilolilo feso'ota'iga i faiga fa'asoa-ma fa'atatau mo fa'atonuga fa'atonu taimi moni i taavale, robotics, ma falegaosimea.

Talosaga masani a le CAN Bus

O le CAN faiga pasi o lo'o fa'aaogaina lautele i alamanuia e mana'omia faatuatuaina, feso'ota'iga taimi moni i le va o masini faaeletonika tufatufaina. Muamua fuafuaina mo faiga tau taavale, CAN pasi talu mai lena taimi na tupu aʻe i se faʻavae faʻavae i totonu fa'ainisinia fa'apisinisi, faaeletonika faafomai, masini fa'ato'aga, ma faiga tau gataifale.

1. Ta'avale Ta'avale

I totonu o taavale, E MAFAI fesootaiga pasi fa'afeso'ota'i le tele Vaega Pulea Fa'aeletonika (ECUs) mo le tu'ufa'atasiga le lelei o subsystems taua. E pulea galuega e pei o:

• Pulea afi

• Faiga fa'asalalau

• taofi loka (ABS)

• Fa'apipi'iina o taga ea

• Pulea o le tau

• Fa'amalama ma fa'amatalaga fa'amatalaga

E ala i le fa'atagaina o vaega nei e fa'asoa fa'amaumauga i luga o a uaea milo-paiga tasi, CAN pasi e faʻaitiitia ai le lavelave o uaea, faʻaleleia suʻesuʻega, ma faʻaleleia faatinoga saogalemu.

2. Alamanuia Automation

I falegaosimea, CAN protocol e fa'aoga e fa'afeso'ota'i Pulea PLC, fa'alogo, fa'agaioia, ma lima robotic. MAFAI fesootaiga mautu faʻamautinoa le taimi saʻo mo le faʻatonutonuina o le gaioiga ma le mataʻituina o tulaga, aemaise lava pe a tuʻufaʻatasia ma faʻasalalauga maualuga e pei o E mafai ona tatala pe DeviceNet.

3. Meafaigaluega Fomai ma Faatoaga

E fa'atuatuaina le pasi CAN ata fa'afoma'i, masini mata'ituina ma'i, ma faiga fa'ainu ona o lona faapalepale sese ma fa'amaoni fa'amaumauga. I faatoaga, e lagolagoina ta'avale ta'ita'i GPS, tagata selesele, ma fa'afuifu e ala i le fa'afeso'ota'iina o ECU ma masini i totonu o si'osi'omaga gaoa.

4. Fa'aaogāga ole gataifale ma fafo ole auala

E manuia foi le protocol i totonu faaeletonika o le gataifale (fa'ata'ita'iga, faiga NMEA 2000) ma ta'avale mamafa fa'apei masini faufale ma loli la'u, o fea le pisa puipuia ma fa'ailoga malosi e taua.

Tulaga lelei o le fa'aaogaina o le pasi CAN

A o le CAN pasi fa'atonuga o se filifiliga sili mo feso'ota'iga fa'apipi'i taimi moni, e taua le malamalama pe faʻafefea ona faʻatusatusa i isi tulaga faʻasalalau fesoʻotaʻiga pei o LIN, Ethernet, RS-485, ma Modbus. O fa'atonuga ta'itasi e iai malosiaga fa'apitoa ma tapula'a e fa'afaigofie ai mo fa'aoga fa'apitoa.

1. CAN vs. LIN (Feso'ota'iga Feso'ota'i Fa'alotoifale)

LIN pasi o se fa'aoga faigofie, tasi-matai, tasi-uaea fa'aogaina mo tau-maualalo, maualalo-saosaoa talosaga e pei o afi fa'amalama pe fetuunaiga nofoa. Fa'atusatusa ile CAN:

Fa'aoga Tulaga: CAN e sili atu mo galuega taua, ae o le LIN e faʻaaogaina mo e le-taimi ma'ale'ale galuega.

2. CAN vs. Ethernet

Ethernet ofoina atu le tele o bandwidth maualuga atu (100 Mbps i le 1 Gbps+) ma lagolago tele fa'amaumauga totogi, ae leai se taimi mautinoa ma faapalepale sese o CAN.

• MAFAI e sili atu mo feso'ota'iga vavalo, fa'aletonu

• Ethernet silisili i fa'amatalaga-malosi pe feso'ota'i i ao

3. CAN vs. RS-485 / Modbus

RS-485 o se ese'esega, tele-pa'u tulaga masani fa'aaogaina ma le Modbus protocol. E lauiloa i fa'ainisinia fa'apisinisi, ae leai se mea na fausia i totonu iloa sese, fe'au fe'au, ma fetuutuunai o CAN.

Lumanai ole CAN Bus Technology

A'o fa'aauau pea le fa'atupuina o faiga fa'apipi'i ma fa'ainisinia fa'apisinisi, o le CAN pasi fa'atonuga o lo'o fa'agasolo fo'i suiga e fa'afetaui ai mana'oga fou. A o E MAFAI masani o lo'o fa'aaogaina lautele, mea fou e pei o CAN FD (Fesuia'i Fua o Fa'amatalaga) ma le tu'ufa'atasiga o le CAN ma IoT ma fesoʻotaʻiga faʻavae Ethernet o lo'o fa'atulagaina le lumana'i o CAN faiga feso'ota'iga.

1. Tulaga ole CAN FD

MAFAI FD fa'alautele le agava'a o le Classical CAN e ala i le lagolagoina:

• E tele atu uta fa'amaumauga (e oo atu i le 64 paita)

• Tulaga maualuga o fa'amaumauga (sili atu i le 1 Mbps)

• Fa'aleleia atili le fa'aogaina o le protocol

O lenei mea e mafai ai e faiga ona faʻasalalau faʻamatalaga sili atu ona faigata, faʻatagaina le faʻaogaina i totonu faiga fesoasoani aveta'avale (ADAS), pulega maa, ma pulega tau alamanuia.

2. Faʻatasi ma Ethernet ma IoT

A'o fa'ateleina feso'ota'iga ta'avale ma masini, MAFAI pasi ua faateleina le fesootai i faitotoa Ethernet, faʻatagaina faʻamatalaga e tuʻuina atu i luga o mamao mamao pe tuʻufaʻatasia i totonu au'ili'iliga i ao tulaga.

Fa'aoga tulaga e aofia ai:

• Pulega o va'a fa'atasi ma su'esu'ega mamao

• Fuafuaga tausiga e ala ile IoT sensors

• Fa'ato'aga atamai ma alalaupapa CAN-Ethernet

3. Fa'aleleia Fofo Saogalemu

Tuuina atu le faatupulaia o atugaluga o loo siomia ai CAN fa'aletonu pasi, o lo'o fa'aaogaina faiga i le lumana'i:

• Fa'amatalaga fa'amaonia fe'au

• Fa'ailoga fa'amatalaga fa'ailoga

• Saogalemu faitotoa ma pa puipui

4. Matafaioi i Ta'avale Tuto'atasi ma Ta'avale Fa'aeletise

Fa'aonaponei ta'avale eletise ma ta'avale tuto'atasi faalagolago tele i feso'ota'iga taimi moni i le va o ECUs, sensors, ma actuators. CAN FD, faʻatasi ma feso'ota'iga ma'ale'ale taimi (TSN) ma Ethernet pito i tua, e fa'amoemoe e tumau pea i se tulaga taua i nei fausaga fa'apipi'i.

Fa'amalosia lau Talosaga Pasi CAN Alamanuia ma SINSMART Industrial Computers

O fa'ata'ita'iga ta'itasi e fa'ainisinia ma lautele voltage DC fa'aoga, filifiliga mamanu leai se fana, ma tele ports serial- lelei mo feso'ota'i CAN transceivers po'o kata fa'alautele. Lagolago mo Mini PCIe, PCIe lapo'a atoa, ma GPIO i totonu e maua ai le fetuutuuna'i mo aganu'u CAN feso'ota'iga tu'ufa'atasiga, pei o le:

• E MAFAI i USB modules

• PCIe fa'avae lua/quad CAN adapters

• Mini PCIe CAN faʻalauteleina kata faʻatasi ma le tuʻuesea

Aisea e Filifili ai SINSMART mo CAN Bus Applications?

• Fa'amautu tulaga fa'apisinisi i siosiomaga faigata

• Fa'alautelega fetuutuunai e fa'aogaina feso'ota'iga tu'ufua CAN

• Fa'agaioiga taimi moni lagolago fa'atasi ma tulaga fa'apipi'i maualalo

• Fa'amaufa'atasi, fa'a-mauga-fa'auoga puipui mo le fa'apipi'iina o kapeneta ma ta'avale

Pe o e fausia se AGV navigation pule, a node feso'ota'iga masini-i-masini, po o a faitotoa fa'alogo, SINSMART PC pisinisi fa'amautinoa o lo'o fa'agaoioi lau faiga pasi CAN la'ititi pa'u leiloa, maualuga le faapalepale eletise, ma fa'aauau pea galuega.

Mofa'amatalaga fa'apitoa po'o fofo fa'apitoa, fa'amolemole fa'afeso'ota'iSINSMART'svaega lagolago.