Lub hauv paus ntsiab lus ua haujlwm ntawm lub cev tswj module (BCM) feem ntau suav nrog ob yam: kho vajtse architecture thiab tswj logic. cov
Kho vajtse architecture
Cov khoom siv kho vajtse ntawm BCM yog lub hauv paus ntawm nws cov haujlwm thiab kev ua haujlwm, thiab feem ntau suav nrog cov khoom tseem ceeb hauv qab no:
Microcontroller unit (MCU): Raws li ARM Cortex series lossis lwm cov txheej txheem ua haujlwm siab, xws li Cortex-M series rau cov tshuab hluav taws xob qis, thiab Cortex-R series rau kev tswj xyuas lub sijhawm. MCU feem ntau ua ke Flash nco rau firmware cia, SRAM rau cov ntaub ntawv ua, thiab tseem tuaj yeem nthuav dav lub peev xwm los ntawm kev nco sab nraud. Peripheral interface: suav nrog ADC (analog-to-digital converter) rau sensor teeb liab ua, UART, SPI, I2C thiab lwm lub tsheb npav rau kev sib txuas lus nrog cov khoom siv sab nraud. Cov tswv yim / tso zis module: Digital I / O interface ua cov teeb liab hloov yooj yim, analog input interface txheej txheem sensor teeb liab, thiab cov tsav tsheb thauj khoom suav nrog cov keyboards siab / qis sab thiab relay tsav tsheb rau kev tswj cov khoom siv hluav taws xob siab. Kev sib txuas lus module: Siv CAN tsheb npav, LIN npav thiab FlexRay tsheb npav rau kev sib pauv ntaub ntawv, uas tsim nyog rau cov xwm txheej sib txawv thiab cov kev xav tau. Tswj logic
Kev tswj logic ntawm BCM suav nrog cov teeb liab tau txais, kev ua haujlwm thiab kev tswj cov zis:
Kev yuav khoom: BCM tau txais cov ntaub ntawv los ntawm ntau lub sensors, xws li kub, av noo, lub teeb sensors, thiab txawm lub koob yees duab duab, thiab ua fusion ua.
Kev ua cov ntaub ntawv: Niaj hnub nimno BCM ECUs feem ntau khiav ntawm lub sijhawm ua haujlwm ntawm lub sijhawm (RTOS), thiab xyuas kom meej tias txhua txoj haujlwm tswj tau ua tiav raws sijhawm los ntawm kev teem sijhawm ua haujlwm thiab kev tswj hwm qhov tseem ceeb.
Kev tswj cov zis: Lub xeev ntawm cov khoom tso tawm tau raug tswj xyuas los ntawm PWM (mem tes dav hloov kho) cov cim, xws li kev hloov pauv ceev.
Txoj kev sib txuas lus
BCM siv ntau yam kev sib txuas lus raws tu qauv los pauv cov ntaub ntawv nrog lwm ECUs:
CAN tsheb npav: Tsim nyog rau kev tswj hwm lub sijhawm thiab cov ntaub ntawv sib kis tau zoo tshaj plaws, siv rau lub hwj chim tswj modules, sensor hubs, thiab lwm yam. LIN tsheb npav: Siv rau kev sib txuas lus qis, xws li kev sib txuas lus ntawm qhov rooj modules thiab lub rooj zaum tswj modules.
FlexRay tsheb npav: Siv rau daim ntawv thov scenarios nrog cov kev xav tau siab rau kev ua haujlwm ntawm lub sijhawm tiag tiag thiab cov ntaub ntawv sib kis tau zoo, feem ntau yog siv rau chassis tswj thiab kev nyab xeeb hauv cov tsheb siab.