Tsab xov xwm no tham txog cov qauv hluav taws xob ntawm ib qhoob lub phom DC them lub pob, piav qhia txog cov ntsiab cai ua haujlwm ntawm ib rab phom thiabcov phom fais fab tsheb ob lub phom, thiab tawm tswv yim txog kev tswj cov zis rau kev sib npaug thiab kev them rov qab ntawmchaw them ob rab phom.
Txhawm rau txhim kho kev txawj ntse thiab kev teb tam sim ntawd ntawm kev tswj hwm kev them nqi, tsab xov xwm no kuj hais txog kev tsim qauv rau lub kaw lus tswj hwm kev them nqi raws li STM32F407 lub nti tswj tseem ceeb nrog Cortex M4 core thiab lub operating system FreeRTOS embedded.
Kev tsim qauv ntawm tag nrho cov topology hluav taws xob ntawm cov pawg them nqi
Kev Tsim Qauv Vaj Tse
Qhov tshiab no nthuav tawm ib qho kev tsim rau rab phom ob-phomDC EV them, muaj ib lub maub los tseem ceeb, lub hwj chim module, tib neeg-tshuab interface zaub, IC card nyeem ntawv, ntse lub zog ntsuas,AC contactor, DC contactor, lub tshuab hluav taws xob hluav taws xob, lub tshuab tiv thaiv hluav taws xob, thiab ob lub hwj chim 12V DC. Daim duab hluav taws xob tag nrho ntawm lub pawg them tau qhia hauv qab no. Kev tsim qauv kev sib txuas hluav taws xob ntawm lub pawg them thiab rab phom A thiab B ua raws li tus qauv hauv tebchaws rau DC them interfaces ntawm cov khoom siv them hluav taws xob rau cov tsheb fais fab.
Txoj cai ua haujlwm
Lub chaw them fais fab yog rab phom ob rabDC chaw them nqi, siv 10 lub zog fais fab txuas nrog ua ke, tsim nrog ob hom kev tswj hwm them: kev sib npaug them thiab kev them nyiaj staggered.
Kev them nyiaj sib npaug: Ob rab phom A thiab B them tib lub sijhawm, nrog rau siab tshaj plaws 5 lub zog modules them los ntawm txhua rab phom.
Kev them nyiaj tsis tu ncua: Thaum tsuas muaj ib rab phom ua haujlwm xwb, qhov siab tshaj plaws ntawm 10 lub zog fais fab tuaj yeem them tau.
Cov modules fais fab tau txais peb-theem AC fais fab nkag, txuas nrog lub surge protector, peb-theem AC energy meter, thiab AC contactor. Cov modules fais fab tso zis DC fais fab. Ib lub khawm nres thaum muaj xwm ceev kuj muaj nyob rau ntawm qhov nkag, uas tso cai rau kev tiv thaiv thaum muaj xwm ceev los ntawm kev txiav tawm peb-theem input. Lub maub los tseem ceeb sib txuas lus nrog cov modules fais fab ntawm CAN bus los pauv cov lus txib tswj kev tso zis, thiab cov modules fais fab kuj txuas nrog ntawm CAN bus. Lub chaw nres tsheb muaj ob lub 12V DC fais fab khoom siv: ib qho txuas nrog A+ thiab A-pins ntawm rab phom them kom muab lub zog pabcuam qis-voltage rau lub tsheb fais fab, thiab lwm qhov muab zog rau lub vijtsam tib neeg-tshuab.
Kev tsim qauv ntawm lub kaw lus tswj hwm tseem ceeb
A. Daim Duab Qhia Txog Kev Ua Haujlwm ntawm Lub System
Daim duab qhia txog lub kaw lus tswj hwm tseem ceeb yog qhia hauv qab no. Lub chip tswj hwm tseem ceeb ntawm lub kaw lus yog STM32F407ZGT6, uas muaj cov khoom siv sib txuas lus nplua nuj: 2 CAN, 4 USART, 2 UART, 1 Ethernet interface, thiab lwm yam, uas ua tau raws li qhov yuav tsum tau ua ntawm lub kaw lus tswj hwm lub chaw them nqi kom tswj tau cov khoom siv sib txuas lus xws li cov modules fais fab, cov ntsuas ntse, cov nyeem ntawv IC card, thiab cov ntxaij vab tshaus kov.
B. Kev Tsim Kho Vaj Huam Sib Luag ntawm Lub Tshuab Tswjhwm Tseem Ceeb
Qhov no suav nrog kev tsim cov voj voog sib txuas lus rau RS232, RS485, thiab CAN.
Kev Tsim Kho RS232
Kev Tsim Kho RS485 Interface
Kev Tsim Qauv Sib Txuas Lus CAN
—Qhov kawg—
Lub sijhawm tshaj tawm: Lub Kaum Ob Hlis-01-2025
