Bese ea Can ke Eng?

A CAN tsamaiso ea libese e entsoe ka tse 'maloa tsa bohlokoa likarolo tsa hardware, e 'ngoe le e 'ngoe e phetha karolo ea bohlokoa ho thusa ho tšepahala puisano ka serial pakeng tsa lisebelisoa. Ho utloisisa likarolo tsena ho thusa baenjiniere le litsebi tsa theknoloji ho rala, ho sebelisa le ho rarolla mathata marang-rang a sebaka sa taolo lits'ebetso tse fapaneng lits'ebetsong-ho tloha tlhahlobo ea likoloi ho boiketsetso ba indasteri.

1. Lekala la Taolo ea Elektronike (ECU)

The ECU ke sesebelisoa se thehiloeng ho microcontroller se tsamaisang software bakeng sa mesebetsi e ikhethileng joalo ka taolo ea enjene, ABS, kapa mabone. Koloi e kanna ea ba le li-ECU tse ngata, kaofela li buisana ka har'a CAN marang-rang.

2. KA KHONA Mookameli

Sehlopha sena se sebetsana le logic ea Protocol ea CAN, ho kenyeletsoa ho etsa foreime ea molaetsa, ho hlahloba liphoso, le bitrbitration. Li-microcontroller tse ngata tsa sejoale-joale li kentse kahare CAN balaoli, ho nolofatsa moralo oa sistimi.

3. KA Transceiver

The KANNA transceiver e fetola matshwao a logic a dijithale ho tswa ho molaodi hore e be matšoao a fapaneng a matla ka beseng ea CAN (CAN High le CAN Low). E boetse e amohela melaetsa e tsoang beseng ebe e e khutlisetsa ho molaoli. Transceiver e netefatsa phetiso ea data e matla esita le ho dibaka tse lerata.

4. Bus Cabling le Termination

Hangata mohala oa libese oa CAN o sebelisoa lithapo tse sothehileng bakeng sa ho hana lerata. Karolo ka 'ngoe ea bese e tlameha ho ba le 120-ohm ho emisa ho hanyetsa ho thibela ponahatso ya matshwao le ho netefatsa botshepehi ba matshwao.

Kakaretso ea thuto ea mantlha ea CAN Bus:

Ka ho kopanya likarolo tsena, a CAN tsamaiso ea libese e fana ka tharollo ea scalable, e bolokang chelete e ngata bakeng sa puisano ea nako ea sebele ka har'a litsamaiso tse kentsoeng. Mehaho ena e etsa motheo oa lintho tse ngata koloi, tsa bongaka, le likopo tsa libese tsa indasteri tsa CAN.

KANNA Bus Protocol Sebopeho

The Mokhoa oa ho tsamaisa libese oa CAN e hlalosa mokhoa oa puisano o ka tšeptjoang, oa boleng bo holimo o sebelisoang haholo ka marangrang a likoloi, balaoli ba indasteri, le litsamaiso tse kentsoeng. Motheong oa eona, CAN ke protocol e shebaneng le molaetsa-li-node li fetisa melaetsa e nang le li-ID le data, eseng liaterese tse tobileng. Sebopeho sena se ntlafatsa ho tenyetseha, tshebetso ya nako ya sebele, le scalability ea tsamaiso.

Mefuta ea liforeimi tsa CAN

1. Sebopeho sa Lintlha - E na le sensor ea 'nete kapa data ea taolo

2. Remote Frame - E kopa data ho tsoa sebakeng se seng

3. Frame ea Phoso - E bontša phoso e fumanoeng ka beseng

4. Overload Frame - E fana ka nako e eketsehileng pele ho karabo

Standard vs. Extended Frame Format

Emong le emong E KA foreimi e latela se hlalosoang sebopeho sa boemo bo nyane:

• Ho qala ha Frame (SOF): E qala phetiso ea molaetsa

• Sekhetho: E bonts'a bohlokoa ba molaetsa (boleng bo tlase = boemo bo holimo)

• Sebaka sa Taolo: E hlalosa bolelele ba data (0–8 byte ho CAN ea khale)

• Sebaka sa Boitsebiso: E tšoere mojaro oa moputso oa molaetsa

• Sebaka sa CRC: E netefatsa botšepehi ba data

• Tšimo ea ACK: E netefatsa ho amoheloa ha molaetsa ka li-node tse ling

• Qetello ea Frame (EOF): E tšoaea hore molaetsa o phethiloe

Bit Nako le Kamahanyo

The nako e nyane e hlalosa hore na hanyane ka 'ngoe e nka nako e kae marang-rang mme e ama sekhahla sa bolutu (ka tloaelo 125 kbps ho isa ho 1 Mbps). Khokahano e nepahetseng lipakeng tsa li-node e netefatsa sampole e nepahetseng ea data, esita le ka bophara libaka tse lerata la motlakase.

Ka ho tšehetsa arbitration, ho lemoha phoso, le ho beha ka pele ho foreimi, the Mohaho oa protocol oa CAN e nolofalletsa puisano e tsitsitseng, e tlaase-latency ho pholletsa le litsamaiso tse ajoang-e etsa hore e be e loketseng lisebelisoa tsa ho laola nako ea sebele likoloing, liroboto, le li-automation tsa lifeme.

Likopo tse Tloaelehileng tsa CAN Bus

The CAN tsamaiso ea libese e amoheloa ka bongata ho pholletsa le liindasteri tse hlokang e ka tšeptjoang, puisano ea nako ea sebele pakeng tsa lisebelisoa tsa elektronike tse ajoang. Qalong e etselitsoe bakeng sa mekhoa ea ho laola likoloi, CAN bese e se e fetohile mokhoa oa motheo oa ho boiketsetso ba indasteri, lisebelisoa tsa elektronike tsa bongaka, mechine ea temo, le tsamaiso ea metsing.

1. Likopo tsa likoloi

Ka likoloing, CAN puisano ea libese e kopanya tse ngata Likarolo tsa Taolo ea Elektronike (ECUs) bakeng sa kopanyo e se nang moeli ea litsamaiso tse nyane tsa bohlokoa. E laola mesebetsi e kang:

• Taolo ea enjene

• Mekhoa ea phetiso

• Anti-lock braking (ABS)

• Ho tsamaisoa ha airbag

• Taolo ea boemo ba leholimo

• Lisebelisoa tsa mabone le infotainment

Ka ho etsa hore likarolo tsena li arolelane data ho feta a thapo e le 'ngoe e sothehileng, CAN bese e fokotsa ho rarahana ha lithapo, e ntlafatsa tlhahlobo ea mafu, 'me ea ntlafatsa ts'ebetso ea polokeho.

2. Industrial Automation

Litlhophisong tsa feme, Protocol ea CAN e sebedisoang ho kopanya Balaoli ba PLC, lisensara, baetsi ba matla, le matsoho a roboto. KA puisano e tiileng e netefatsa nako e nepahetseng ea taolo ea motsamao le ho lekola maemo ka nako ea nnete, haholo ha e kopantsoe le liprothokholo tsa maemo a holimo joalo ka CANopen kapa DeviceNet.

3. Thepa ea Bongaka le Temo

Bese ea CAN e tšeptjoa setšoantšo sa bongaka, lisebelisoa tsa ho beha leihlo mokuli, le tsamaiso ea infusion ka lebaka la eona mamello ea liphoso le botšepehi ba data. Temong, ea tšehetsa Literekere tse tataisoang ke GPS, bakotuli, le li-sprayers ka ho hokahanya li-ECU le li-sensor ho pholletsa le libaka tse matsutla-tsutla.

4. Marine le Off-Highway Sebelisa

Protocol e boetse e sebetsa hantle marine electronics (mohlala, litsamaiso tsa NMEA 2000) le likoloi tse boima joaloka mechine ea kaho le literaka tsa merafo, kae ho itšireletsa lerata le pontsho e matla li bohlokoa.

Melemo ea ho Sebelisa CAN Bus

Ha a ntse a Mokhoa oa ho tsamaisa libese oa CAN ke khetho e etellang pele bakeng sa puisano e kenelletseng ka nako ya nnete, ho bohlokoa ho utloisisa hore na e bapisoa joang le litekanyetso tse ling tsa serial tsa puisano joalo ka LIN, Ethernet, RS-485, le Modbus. Protocol e 'ngoe le e' ngoe e na le matla le meeli e ikhethang e etsang hore e tšoanelehe bakeng sa lits'ebetso tse ikhethileng.

1. CAN vs. LIN (Local Interconnect Network)

LIN bese ke mokhoa o bonolo, o mong, oa terata e le 'ngoe o sebelisetsoang lits'ebetso tse theko e tlase, tse lebelo le tlase joalo ka lifensetere tsa motlakase kapa litokiso tsa setulo. Ha e bapisoa le CAN:

Sebelisa Taba: CAN e ratoa bakeng sa mesebetsi e hlokolosi, ha LIN e sebelisoa bakeng sa e sa tsotelleng nako mesebetsi.

2. CAN vs. Ethernet

Ethernet e fana ka li-bandwidth tse phahameng haholo (100 Mbps ho 1 Gbps+) le litšehetso litefiso tse kholo tsa data, empa e haelloa ke nako e lekanyang le mamello ea liphoso ea CAN.

• KA ho molemo bakeng sa puisano e ka lebelloang, e tlase-tlase

• Ethernet e ipabola ho lisebelisoa tse matla haholo kapa tse amanang le maru

3. CAN vs. RS-485 / Modbus

RS-485 ke maemo a fapaneng, a marotholi a mangata a atisang ho sebelisoa le Protocol ea Modbus. E tumme ho boiketsetso ba indasteri, empa e haelloa ke e hahelletsoeng ka hare ho lemoha phoso, kahlolo ea molaetsa, le ho tenyetseha ea CAN.

Bokamoso ba CAN Bus Technology

Ha litsamaiso tse kentsoeng le li-automation tsa indasteri li ntse li tsoela pele ho fetoha, the Mokhoa oa ho tsamaisa libese oa CAN e boetse e kena phetohong ho fihlela litlhoko tse ncha. Leha ho le joalo Khale CAN e ntse e sebelisoa haholo, mekhoa e mecha e kang CAN FD (Flexible Data Rate) le kopanyo ea CAN le Marang-rang a thehiloeng ho IoT le Ethernet ba bopa bokamoso ba Mekhoa ea puisano ea CAN.

1. Ho phahama ha CAN FD

KA FD e eketsa bokhoni ba Classical CAN ka ho tšehetsa:

• Litefiso tse kholoanyane tsa data (ho fihla ho li-byte tse 64)

• Litefiso tse phahameng tsa data (ka holimo ho 1 Mbps)

• Ntlafatso ea ts'ebetso ea protocol

Sena se lumella litsamaiso ho fetisa data e rarahaneng, e nolofalletsang tšebeliso ho Sistimi e tsoetseng pele ea lithuso tsa bakhanni (ADAS), taolo ya betri, le taolo ya indasteri.

2. Ho kopanya le Ethernet le IoT

Ha likoloi le mechini li ntse li hokahane le ho feta, CAN bese e ntse e hokahana le ho feta Li-gateway tsa Ethernet, e lumellang hore data e fetisoe libakeng tse telele kapa e kopantsoe ho cloud-based analytics sethala.

Lisebelisoa li kenyelletsa:

• Tsamaiso ea likepe e nang le tlhahlobo ea hole

• Tlhokomelo ea esale pele ka li-sensor tsa IoT

• Temo e bohlale e nang le marokho a CAN-Ethernet

3. Matlafatsoa Security Solutions

Ho fanoe ka matšoenyeho a ntseng a eketseha ho potoloha Bofokoli ba libese tsa CAN, litsamaiso tsa nako e tlang li amohela:

• Mekhoa ea netefatso ea molaetsa

• Liforeimi tsa data tse patiloeng

• Sireletsa liheke le li-firewall

4. Karolo ea Likoloi tse ikemetseng le tsa Motlakase

Ea kajeno likoloi tsa motlakase le tse ikemetseng itšetleha haholo ka puisano ea nako ea sebele lipakeng tsa ECU, li-sensor, le li-activator. CAN FD, e kopantsoe le marang-rang a amehang ka nako (TSN) le li-backbones tsa Ethernet, ho lebelletsoe hore li tla lula e le lera la bohlokoa meahong ena e nyalisitsoeng.

Matlafatsa Likopo tsa Libese tsa Indasteri ea CAN ka Likhomphutha tsa Indasteri tsa SINSMART

Mohlala o mong le o mong o entsoe ka bophara ba motlakase DC ho kenya, likhetho tsa moralo tse se nang fan, le likou tse ngata tsa serial-e loketseng bakeng sa ho kopanya li-transceivers tsa CAN kapa likarete tsa katoloso. Tšehetso bakeng sa PCIe e nyane, PCIe ea boholo bo felletseng, le li-GPIO tsa ka hare e fana ka bonolo bakeng sa tloaelo Khokahano ea khokahano ea CAN, joalo ka:

• CAN ho li-module tsa USB

• PCIe-based dual/quad CAN adapters

• Likarete tsa katoloso tsa Mini PCIe li ka itšehla thajana

Hobaneng o Khetha SINSMART bakeng sa likopo tsa CAN Bus?

• Boiketlo ba boemo ba indasteri dibakeng tse thata

• Katoloso e bonolo ho amohela likhokahano tse ka thoko tsa CAN

• Ts'ebetso ea nako ea sebele tšehetso e nang le li-platform tse kentsoeng ka tlase-latency

• Libaka tse koaletsoeng ka thata, tse bonolo ho thaba bakeng sa khabinete le ho kenya koloi

Hore na o ntse o haha AGV navigation controller,a node ea puisano ea mochini le mochini, kapa a sensor gateway, SINSMART li-PC tsa indasteri etsa bonnete ba hore libese tsa hau tsa CAN li tsamaea le tahlehelo e fokolang ea pakete, mamello e phahameng ea motlakase, le boholo ba ts'ebetso ea ts'ebetso.

Bakeng salitlhaloso tse qaqileng kapa litlhophiso tse khethehileng, ka kopo ikopanyeSINSMART'Ssehlopha sa tšehetso.