Indlela yokusombulula ukuzinza kokuhanjiswa komqondiso wesiboniso se-LED?Umboniso osebenzayo we-LED ubonakala uphazamisekile ngenxa yeengxaki zomqondiso.Ukuba kumsitho obalulekileyo wokuvula, ilahleko ayinakulungiswa.Indlela yokuqonda ukuthembeka kunye nokuzinza kokuhanjiswa komqondiso kuye kwaba ngumba omkhulu kwiinjineli ukusombulula.Kwinkqubo yothumelo, umqondiso uya kuba buthathaka njengoko umgama ukhula, ngoko ke ukukhethwa kwendawo yokuhambisa kubaluleke kakhulu.

1. Ukunciphisa umqondiso wokubonisa i-LED: Akunzima ukuqonda ukuba kungakhathaliseki ukuba yiyiphi i-medium esetyenziselwa ukuhanjiswa, isignali iya kunciphisa ngexesha lokuhambisa.Sinokuyijonga intambo yokuhambisa i-RS-485 njengesekethe elinganayo eyenziwe ngamaqela amaninzi aphikisayo, ii-inductors kunye ne-capacitors.Ukuchasana kocingo kunempembelelo encinci kwisignali kwaye inokungahoywa.I-capacitance C esasazwayo yekhebula ibangelwa ikakhulu ziingcingo ezimbini ezihambelanayo zesibini esijikiweyo.Ukulahlekelwa kwesiginali kubangelwa ikakhulu kwi-LC yokucoca i-low-pass filter eyakhiwe yi-capacitance esasazwayo kunye ne-inductance yokusasazwa kwentambo.Okukhona uphezulu izinga lebhaud yonxibelelwano, kokukhona ukuncipha komqondiso okukhulu.Ngoko ke, xa inani ledatha edlulisiweyo lilikhulu kakhulu kwaye imfuno yezinga lokudluliselwa ayikho phezulu kakhulu, ngokuqhelekileyo sikhetha izinga le-baud ye-9 600 bps.

2. Ukubonakalisa umqondiso kumgca wonxibelelwano wesikrini sokubonisa i-LED: Ukongezelela ekunciphiseni umqondiso, enye into echaphazela ukuhanjiswa kwesignali kukubonakalisa umqondiso.Ukungahambelani kwe-impedance kunye nokuyeka ukunyanzeliswa zizizathu ezibini eziphambili ezibangela ukubonakaliswa komqondiso webhasi.Isizathu 1: Ukungahambelani kokuphazamiseka.Ukungahambelani kwe-Impedance ikakhulu kukungahambelani kwe-impedance phakathi kwe-chip ye-485 kunye nomgca wonxibelelwano.Isizathu sokubonakaliswa kukuba xa umgca wonxibelelwano ungasebenzi, umqondiso womgca wonxibelelwano wonke uphazamisekile.Nje ukuba olu hlobo lwesignali yokubonakalisa lubangela umthelekisi kwigalelo le-chip ye-485, umqondiso wephutha uya kwenzeka.Isisombululo sethu ngokubanzi kukongeza i-bias resistors yokuchasana okuthile kwi-A kunye ne-B imigca yebhasi, kwaye idonsele phezulu kwaye iphantsi ngokwahlukileyo, ukuze kungabikho zibonakaliso ezingcolileyo ezingalindelekanga.Isizathu sesibini kukuba i-impedance iyayeka, efana nokubonakaliswa okubangelwa ukukhanya okungena kwelinye i-medium ukusuka kwelinye.Ekupheleni komgca wothumelo, umqondiso ngokukhawuleza udibana ne-impedance encinci okanye akukho ntambo, kwaye isibonakaliso siya kubangela ukubonakaliswa kule ndawo.Indlela esetyenziswa ngokuqhelekileyo yokuphelisa le mbonakalo kukudibanisa i-terminal resistor yobukhulu obufanayo kunye ne-impedance yeempawu zekhebula ekupheleni kwekhebula ukwenza ukuba i-impedance yentambo iqhubeke.Ekubeni ukuhanjiswa komqondiso kwikhebula ku-bidirectional, i-terminal resistor yobukhulu obufanayo kufuneka idibaniswe ngaphesheya kwentambo yonxibelelwano.

3. Impembelelo ye-capacitance esasazwayo yesikrini sokubonisa i-LED kumsebenzi wokuhambisa ibhasi: Ikhebula lokuhambisa ngokuqhelekileyo liphothiweyo, kwaye i-capacitance iyenzeka phakathi kweengcingo ezimbini ezihambelanayo ze-twisted pair.Kukho kwakhona i-capacitance encinci efanayo phakathi kwentambo kunye nomhlaba.Ukusukela ukuba umqondiso othunyelwe ebhasini uqulunqwe ngamasuntswana amaninzi “1” kunye “no-0”, xa idibana nee-bytes ezikhethekileyo ezinje nge-0×01, inqanaba “0” lenza ukuba amandla osasazo adibane nexesha lokuhlawulisa, kwaye xa amandla Xa inqanaba "1" liza ngokukhawuleza, intlawulo eqokelelwe yi-capacitor ayikwazi ukukhutshwa ngexesha elifutshane, elibangela ukuguqulwa kwe-bit signal, kwaye emva koko ichaphazela umgangatho wokuhanjiswa kwedatha yonke.

4. Iprothokholi yonxibelelwano olulula noluthembekileyo lwesikrini sokubonisa i-LED: Xa umgama wonxibelelwano umfutshane kwaye indawo yesicelo ingaphazamisi kangako, ngamanye amaxesha sifuna unxibelelwano olulula lwendlela enye ukugqiba yonke imisebenzi yeprojekthi, kodwa uninzi imeko yesicelo ayikho.amabhongo.Kwinqanaba lokuqala leprojekthi, kushwankathelwa ukuba i-wiring iyingcali (njengokugcina umgama othile phakathi komgca wesignali kunye nomgca wamandla), ukungaqiniseki komgama wonxibelelwano, iqondo lokuphazamiseka malunga nomgca wonxibelelwano, nokuba umgca wonxibelelwano usebenzisa i-twisted-pair wire shielded wire, njl. Ezi zinto zezo zonke zenkqubo.Unxibelelwano oluqhelekileyo lunempembelelo enkulu.Ke ngoko, kubaluleke kakhulu ukuzoba iprotocol yonxibelelwano epheleleyo.