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YUAV TSUM PAUB lub tsheb npav interframe chaw?
YUAV TSUM PAUB lub tsheb npav interframe chaw?

Video: YUAV TSUM PAUB lub tsheb npav interframe chaw?

Video: YUAV TSUM PAUB lub tsheb npav interframe chaw?
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Interframe qhov sib txawv

Cov ntaub ntawv thav duab thiab tej thaj chaw deb thav duab raug cais los ntawm cov thav ntawv ua ntej los ntawm me ntsis teb hu ua interframe chaw . Interframe chaw muaj me ntsis teb intermission thiab tsheb npav idle, thiab ncua kev xa mus rau qhov kev ua yuam kev passive chaw nres tsheb, uas tau raug xa tawm ntawm cov lus dhau los.

Ntawm no, dab tsi yog qhov chaw interframe hauv tuaj yeem?

Cov Interframe Chaw sawv cev qhov tsawg kawg nkaus qhov chaw nruab nrab ntawm txhua hom (cov ntaub ntawv, tej thaj chaw deb, yuam kev, overload) thiab cov ntaub ntawv hauv qab no lossis cov chaw taws teeb. Thaum lub sij hawm Interframe Chaw (intermission) tsis muaj ua tau pib kis ntawm cov ntaub ntawv los yog tej thaj chaw deb ncej. Tsis muaj Interframe chaw nruab nrab ntawm qhov yuam kev thiab overload thav duab.

Tsis tas li ntawd, CAN tsheb npav thauj khoom li cas?

  1. Afaik, tsheb npav thauj yog feem pua. tsheb thauj khoom = #bytes xa / ceev. e.g. 1000 bytes (yuav tsum xa hauv ib thib ob) * 8 (bits / byte / 500, 000 (baudrate bps) * 100% = 1.6%
  2. Nyob rau hauv koj cov ntaub ntawv koj xa ib ob: 1 / 0.005 * 50 * 76 = 760, 000. 1 / 0.010 * 10 * 76 = 76, 000. 1 / 0.100 * 30 * 76 = 22, 800.

Qhov thib ob, lub npav tuaj yeem ua haujlwm li cas?

Lub Controller Area Network ( CAN tsheb npav ) yog lub paj hlwb, ua kom muaj kev sib txuas lus ntawm txhua qhov ntawm lub cev. Ib yam li ntawd, 'nodes' zoo li cov leeg sib txuas ntawm lub CAN tsheb npav , uas ua raws li ib tug central networking system. Nyob rau hauv lem, electronic control units (ECU) zoo li caj npab thiab txhais ceg.

CAN Bus message hom?

Plaub qhov sib txawv hom lus , los yog thav duab (saib daim duab 2 thiab daim duab 3), uas ua tau xa mus rau a CAN tsheb npav yog cov ntaub ntawv thav duab, cov chaw taws teeb thav duab, qhov yuam kev thav duab, thiab cov ncej overload.

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