Kedu ihe bụ usoro nkwukọrịta data?

Kedu ihe bụ usoro nkwukọrịta data?

CAN nkwukọrịta ụgbọ ala

Ụgbọ ala Controller Area Network (CAN) bụ ụgbọ ala nzikọrịta ozi e mere maka ngwa - ozugbo. Ọ nwere ike ibunye akara n'elu ụzọ gbagọrọ agbagọ, eriri coaxial, ma ọ bụ eriri anya. N'ihi arụmọrụ ya dị elu, ntụkwasị obi dị elu, yana ezigbo ezigbo oge -, CAN abụrụla otu n'ime ụgbọ ala ndị a na-anabatakarị n'ụwa niile.

Ugbu a, nkwurịta okwu CAN bụ usoro nzikọrịta ozi bụ isi maka sistemụ njikwa batrị (BMS). A na-atụ aro ya ma tinye ya n'ọtụtụ ebe na sistemụ njikwa batrị ụgbọ ala eletrik nke ụlọ yana nke mba ụwa, yana n'ụkpụrụ nkwukọrịta data BMS dị mkpa ma na China ma ná mba ọzọ. A na-ejikwa ụkpụrụ ụgbọ ala ndị ọzọ dị ka RS232 na RS485 na ụfọdụ nzikọrịta ozi dị n'ime nke sistemu njikwa batrị.

Nkwukọrịta FlexRay

Site na mmepe nke teknụzụ eletrọnịkị ụgbọ ala, ihe ngwọta ọdịnala CAN abụghịzi nhọrọ kacha mma maka ikwado ihe ịma aka nkwukọrịta ụgbọ ala. Na Septemba 2000, BMW na DaimlerChrysler, na mmekorita ya na Philips na Motorola, hibere FlexRay Consortium iji mepụta usoro nzikọrịta ozi ọhụrụ wee kwalite ya dịka ọkọlọtọ ọkọlọtọ maka ike ụgbọ elu, chassis, na X{2}}site{{3}sistemụ waya.

FlexRay na-enye ọtụtụ atụmatụ dị elu nke ọdịnala na -ụkpụrụ nzikọrịta ụgbọ ala (dị ka CAN) enweghị, gụnyere:

(1) Ọnụego nnyefe dị eluỌwa FlexRay ọ bụla na-enye bandwidth nke 10 Mbit/s. FlexRay nwere ike ịrụ ọrụ dị ka otu -sistemụ ọwa (nke yiri netwọkụ CAN ma ọ bụ LIN) ma ọ bụ dị ka sistemụ ọwa abụọ{3}, na-enweta ọnụego nnyefe kachasị nke 20 Mbit/s-20 ugboro karịa ọsọ ọsọ na-arụ ọrụ nke netwọkụ CAN dị ugbu a.

(2) Ntọala Oge mmekọrịtaỤzọ nnweta a na-eji na FlexRay dabere na oge oge zuru ụwa ọnụ emekọrịtara ọnụ. A na-ahazi ntọala oge a na-akpaghị aka ma mekọrịta ya site na protocol wee mee ka ọ dị na oyi akwa ngwa. Nzizi nke isi oge dị n'etiti 0.5 μs na 10 μs (ọ na-abụkarị 1-2 μs).

(3) Nkwukọrịta siri ikeNkwurịta okwu na FlexRay na-apụta na usoro nkwurịta okwu na-aga n'ihu na-aga n'ihu, ebe a na-ekenye ozi kpọmkwem ọnọdụ (oghere) n'ime okirikiri. N'ihi ya, onye nnata mara tupu oge ozi ga-abịarute. Ngbanwe nke nwa oge nke oge mbata ozi pere mpe ma bụrụkwa nke ekwesịrị.

(4) Nnagide mmejọ dị eluIke nchọta mperi siri ike na mmejọ{0}}ịrụ ọrụ nnabata bụ isi ihe echere na FlexRay.

• Ụgbọ ala FlexRay na-eji Cyclic Redundancy Check (CRC) chọpụta mperi nzikọrịta ozi.
• Site na nzikọrịta ozi ọwa abụọ-, FlexRay na-enye nrụgharị.
• Site n'iji topology kpakpando (ma ọ bụ ngwakọta nke topologies), FlexRay nwere ike dozie mmejọ - ihe a chọrọ ndidi, gụnyere otu -isi{2}} nke - mbelata ọdịda.

(5) MgbanweMgbanwe mgbanwe bụ isi ihe na-elekwasị anya n'oge mmepe nke usoro FlexRay ma gosipụta ya n'akụkụ ndị a: ① Na-akwado ọtụtụ topologies netwọk (ụgbọ ala, kpakpando, ngwakọ, wdg); ② Ogologo ozi nwere ike ịhazi: ogologo ụgwọ data nwere ike ịhazi ya na ihe achọrọ nke ngwa njikwa; ③ Mgbe ị na-eji dual-channel topology, enwere ike iji ọwa abụọ ahụ mụbaa bandwit ma ọ bụ bufee ozi na-adịghị arụ ọrụ; ④ Ogologo oge nke akụkụ static na ike dị n'ime usoro nkwurịta okwu nwere ike gbanwee dịka mkpa ngwa ngwa siri dị.

Ethernet ụlọ ọrụ

Ethernet Industrial bụ netwọọdụ dijitalụ mepere emepe zuru oke. Ngwaọrụ sitere na ndị nrụpụta dị iche iche nwere ike nweta njikọ n'ụzọ dị mfe site na ịgbaso ụkpụrụ netwọkụ ọkọlọtọ. Ọ na-enye ọnụego nkwurịta okwu dị elu: Ethernet ngwa ngwa na ọsọ nke 10 Mbit / s na 100 Mbit / s ka a nakweere n'ọtụtụ ebe, Gigabit Ethernet technology tozuru okè, na 10 Gbit / s Ethernet nọ n'okpuru nyocha na mmepe. Ọnụego ndị a dị elu nke ukwuu karịa nke ụgbọ ala ugbo ala ugbu a.

Agbanyeghị, Ethernet ụlọ ọrụ ka na-eche ọtụtụ ihe ịma aka ihu, ọkachasị gụnyere:

• Arụmọrụ ezigbo oge{{0}
• Nkwekọrịta na ntụkwasị obi na gburugburu ụlọ ọrụ mmepụta ihe siri ike
• Nnweta ngwa -Layer protocol dabara maka njikwa akpaaka ụlọ ọrụ

Site na ọganihu teknụzụ Ethernet mmepụta ihe na-aga n'ihu, a na-eji nke nta nke nta dozie okwu ndị a dị n'elu.