1. Isizinda sesizinda sezimboni esinokhahlo

Njengoba i-Ethernet yaklanywa ekuqaleni, yayingasekelwe kuzinhlelo zokusebenza zenethiwekhi yezimboni. Uma isetshenziswa ezindaweni zezimboni, ibhekene nezimo zokusebenza ezinzima, ukuphazamiseka okukhulu kwemigqa, njll., lokhu nakanjani kuzobangela ukwethembeka kwayo kwehle. Esimeni sokukhiqiza, amanethiwekhi ezimboni kumele abe nokwethembeka okuhle, ukubuyiswa, kanye nokugcinwa. Lokho okokuqinisekisa ukuthi uma noma iyiphi ingxenye ohlelweni lwenethiwekhi yehluleka, ngeke ibangele ukuthi uhlelo lokusebenza, isistimu yokusebenza, noma isistimu yenethiwekhi iphahlazeke futhi ikhubaze.

Amaswishi e-Industrial Ethernet aklanyelwe ukucabangela izimo eziyinkimbinkimbi zesizinda sezimboni, ukuze akwazi ukujwayelana nemvelo yezimboni futhi adlale indima yokushintsha kwebanga lezimboni.

Imvelo yendawo yezimboni yimbi kakhulu kunemvelo evamile, okungenani ngokuya ngokudlidliza, umswakama, kanye nezinga lokushisa, amaswishi ajwayelekile awaklanyelwe ukumelana nezimo ezihlukahlukene ezivela endaweni yezimboni, ukushintsha okujwayelekile akukwazi ukusebenza kule ndawo enokhahlo. isikhathi eside, futhi bavame ukuthambekela ekuhlulekeni, okwandisa izindleko zokulondoloza. Ngokuvamile akunconywa ukusebenzisa amaswishi ezentengiselwano endaweni yezimboni. Ukuze unike amandla ukushintshwa ukuthi kusetshenziswe kule ndawo enzima, inkinobho engakwazi ukuzivumelanisa nale ndawo iyakhiqizwa. Ukuthembeka kweswishi yezinga lezimboni kufaka phakathi ukuhluleka kwamandla, ukuphazamiseka kwembobo, i-alamu ephumayo edluliswayo, okokufaka kwamandla e-DC aphindwe kabili, ukuvikelwa kwesekethe okusebenzayo, ukuvikela okuzenzakalelayo kwesiphazamisi sesekhethi ku-voltage engaphezu kwamandla nangaphansi kwe-voltage, (ukuthembeka kuyahluka kancane kuye ngemodeli ).

Umehluko wokusebenza ubhekisele kakhulu kulokhu: amaswishi ebanga lezimboni aseduze nokuxhumana kwenethiwekhi yezimboni emsebenzini, njengokuxhumana namabhasi ahlukahlukene, ukunganakwa kwemishini, nesikhathi sangempela semishini, njll. Umehluko ekusebenzeni ubonakala ikakhulukazi ekuzivumelaniseni nezimo imingcele yemvelo yangaphandle. Ngaphezu kwezindawo eziningi ezinzima ezifana nezimayini zamalahle nemikhumbi, indawo yezimboni nayo inezidingo ezikhethekile ngokuya nge-EMI (ukuhambisana kozibuthe), izinga lokushisa, umswakama, nokumelana nothuli. Phakathi kwazo, ithonya lokushisa emishinini yenethiwekhi yezimboni libanzi kakhulu.

2. Umthwalo wenethiwekhi ye-Ethernet uyasinda

Ngenxa yokuthi iphrothokholi yesendlalelo se-MAC ye-Ethernet yi-CSMA/CD, le phrothokholi yenza izingxabano kunethiwekhi, ikakhulukazi uma umthwalo wenethiwekhi mkhulu kakhulu, usobala kakhulu. Kunethiwekhi yezimboni, uma kunenombolo enkulu yezingxabano, idatha kufanele idluliselwe kabusha izikhathi eziningi, okwandisa kakhulu ukungaqiniseki kokuxhumana phakathi kwamanethiwekhi. Kunethiwekhi yokulawula izimboni, lokhu kungaqiniseki kusuka endaweni eyodwa kuya kwenye kuzoholela nakanjani ekwehleni kokulawula uhlelo lokusebenza.

3. Ukusebenza kwesikhathi sangempela okuqinile kwedatha yezimboni

Kumasistimu okulawula izimboni, isikhathi sangempela singachazwa njengokulinganiswa kwesikhathi sokuphendula sesistimu kumcimbi. Ngemva kokwenzeka komcimbi, isistimu kufanele iphendule phakathi nohlaka lwesikhathi olungabonwa kusengaphambili ngokunembile. Kodwa-ke, imboni inezidingo eziqinile zokudluliswa kwedatha ngesikhathi sangempela, futhi ukubuyekezwa kwedatha kuvame ukuqedwa phakathi kwamashumi e-ms. Futhi futhi ngenxa yendlela ye-CSMA/CD ekhona ku-Ethernet, lapho kwenzeka ukungqubuzana, idatha kufanele idluliselwe kabusha, engazanywa izikhathi ezifika kweziyi-16. Ngokusobala, le ndlela yokuxazulula izingxabano iza ngezindleko zesikhathi. Futhi uma sekunqamuke, ngisho noma kuyimizuzwana embalwa nje, kungase kubangele ukuthi kumiswe ukukhiqizwa konke noma ngisho nezinto zokusebenza kanye nezingozi zokuphepha komuntu siqu.

Hhayi-ke, okuqukethwe okungenhla kwabiwe yi-JHA TECH ukuthi kungani ukushintshwa kwenethiwekhi yezindandatho zezimboni kufanele kusetshenziswe kumasayithi wezimboni? Isingeniso esiningiliziwe salolu daba, ngithemba ukuthi luzoba usizo kuwo wonke umuntu!