Imiyalelo yesithuthi sebhasi
I-485 luhlobo lwebhasi ye-serial esetyenziswa ngokubanzi kunxibelelwano lwezoshishino.Unxibelelwano lwe-485 lufuna kuphela iingcingo ezimbini (umgca A, umgca B), ukuhanjiswa komgama omde kuyacetyiswa ukuba kusetyenziswe isibini esijijekileyo esikhuselekileyo.Ngokwethiyori, umgama omkhulu wothumelo lwe-485 yienyawo ze-4000 kwaye izinga eliphezulu lokuhambisa liyi-10Mb / s.Ubude besibini esijijeneyo esilungeleleneyo silingana ngokuchanekileyo kwisantya sothumelo, esingaphantsi kwe-100kb/s ukufikelela kumgama omkhulu wothumelo.Elona qondo liphezulu losulelo linokuphunyezwa kuphela kwimigama emifutshane kakhulu.Ngokuqhelekileyo, umlinganiselo ophezulu wothumelo ofunyenwe kucingo olujijekileyo lweemitha ezili-100 kuphela yi-1Mb/s.
Kwiimveliso zonxibelelwano ezingama-485, umgama wothumelo ubukhulu becala uxhomekeke kumgca wothumelo osetyenzisiweyo, ngokuqhelekileyo ngcono isibini esijijekileyo esikhuselekileyo, umgama wothumelo uya kuba mkhulu.
Kukho inkosi enye kuphela kwibhasi ye-485, kodwa izixhobo ezininzi zekhoboka zivumelekile.Inkosi inokunxibelelana nayo nayiphi na ikhoboka, kodwa ayikwazi ukuthetha phakathi kwamakhoboka.Umgama wonxibelelwano uxhomekeke kumgangatho we-485, ohambelana nesixhobo sonxibelelwano esisetyenzisiweyo, indawo yokunxibelelana kwendlela, izinga lonxibelelwano (izinga le-baud) kunye nenani lamakhoboka axhunyiwe.Xa umgama wonxibelelwano ude, ukuxhatshazwa kwe-terminal ye-120-ohm kuyadingeka ukuze kuphuculwe umgangatho wonxibelelwano kunye nokuzinza.Ukuchasana kwe-120 ohms ngokuqhelekileyo kuxhunywe ekuqaleni nasekupheleni.
Iindlela ezidityanisiweyo zesithuthi sebhasi kunye nekhabhathi yolawulo lwebhasi yile ilandelayo:
Umzobo 1: Indlela yokudibanisa ibhasi yolawulo lwebhasi yothungelwano lwebhasi
Isivamvo: irhasi eyityhefu yi-electrochemical, irhasi etshayo ibangela ukutsha, ikharbon diokside yi-infrared.
Ixesha lokuphendula: ≤40s
Imodi yokusebenza: umsebenzi oqhubekayo
Umbane osebenzayo: DC24V
Imo yemveliso: RS485
Uluhlu lobushushu: -20℃ ~ 50℃
Uluhlu lokufuma: 10 ~ 95% RH [akukho ukujiya]
Inombolo yesatifikethi sobungqina bokudubula.: CE15.1202
Uphawu olunobungqina bokudubula: Exd II CT6
Ufakelo: lunyuswe eludongeni (qaphela: bhekisa kumzobo wofakelo)
Ubume benkangeleko: iqokobhe lomthumeli lithatha iqokobhe le-aluminium ye-die-cast eyilwe kunye nesakhiwo esingatshiyo, uyilo lomsele wesigqubuthelo esingaphezulu silungele ukutshixa iqokobhe, umphambili wesivamvo uyilwe ngesakhiwo esisezantsi ukuqinisekisa olona nxibelelwano lulungileyo phakathi kwesivamvo. kunye nerhasi, nendawo yokungena yamkela ijoyinti yokumelana nokudubula kwamanzi.
Imilinganiselo yangaphandle: 150mm×190mm×75mm
Ubunzima:≤1.5kg
Itheyibhile1:Iparamitha yerhasi ngokubanzi
Irhasi | Igama legesi | Isalathiso sobugcisa | ||
Uluhlu lomlinganiselo | Isigqibo | Indawo yokulumkisa | ||
CO | Ikharbhon monoxide | 0-1000pm | 1ppm | 50ppm |
H2S | I-Hydrogen sulfide | 0-100ppm | 1ppm | 10ppm |
EX | Irhasi etshayo | 0-100%LEL | 1%LEL | 25%LEL |
O2 | Ioksijini | 0-30%vol | 0.1%vol | Phantsi nge-18%vol Iphezulu 23%vol |
H2 | Ihydrogen | 0-1000pm | 1ppm | 35ppm |
CL2 | I-Chlorine | 0-20ppm | 1ppm | 2ppm |
NO | I-nitric oxide | 0-250pm | 1ppm | 35ppm |
SO2 | Sulfur dioxide | 0-100ppm | 1ppm | 5ppm |
O3 | I-ozone | 0-50ppm | 1ppm | 2ppm |
NO2 | Nitrogen dioxide | 0-20ppm | 1ppm | 5ppm |
NH3 | I-Amoniya | 0-200ppm | 1ppm | 35ppm |
CO2 | Umoya omdaka | 0-5%vol | 0.01%vol | 0.20%vol |
Qaphela: Itheyibhile engentla i-1 kuphela iiparamitha zegesi ngokubanzi.Nceda uqhagamshelane nomvelisi ngegesi ekhethekileyo kunye neemfuno zoluhlu.
Inkqubo yokuhambisa ibhasi yinethiwekhi (igesi) yokubeka iliso inkqubo edibanisa i-gas transmitter kunye ne-485 yokuhanjiswa kwesignali kwaye ichongiwe ngokuthe ngqo kwaye ilawulwe yi-PC host host computer okanye iKhabhinethi yokulawula.Ngokuphuma kwe-relay, i-relay iya kuvala xa i-gas concentration ikwi-alamu.Inkqubo yokuhambisa ibhasi yenzelwe ngokuhambelana neemfuno zoyilo lwenethiwekhi yebhasi ye-485, kwaye isetyenziswe kunxibelelwano oluqhelekileyo lwe-485 yenethiwekhi yebhasi.
Umzobo 2: Umzobo wangaphakathi we-transmitter
Imfuno yocingo lwenkqubo yokuhambisa ibhasi iyafana naleyo yebhasi eqhelekileyo engama-485.Nangona kunjalo, ikwadibanisa ezinye izinto ezizenzele zona, ezinje:
1. Ingaphakathi lidibaniswe ne-120 ohm yokumelana nokuxhatshazwa, ekhethiweyo ngokutshintsha.
2. Ngokuqhelekileyo, umonakalo kwezinye iindawo aziyi kuchaphazela ukusebenza okuqhelekileyo kwe-transmitter yebhasi.Nangona kunjalo, kufuneka kuphawulwe ukuba ukuba amacandelo aphambili angaphakathi kwi-node wonakaliswe kakhulu, yonke into ehambisa ibhasi inokukhubazeka.Kwaye Nceda uqhagamshelane nomvelisi ngezisombululo ezithile.
3. Umsebenzi wenkqubo uzinzile, uxhasa iiyure ezingama-24 zomsebenzi oqhubekayo.
4. Esona sibonelelo siphezulu sethiyori ngama-255 nodi.
Qaphela: umgca wesignali awuxhasi iplagi eshushu.Usetyenziso olucetyiswayo: qala uqhagamshele umgca womqondiso webhasi ye-485, emva koko unike amandla i-node ukuze isebenze.
Indlela yokuxhoma eyenziwe eludongeni: zoba imingxuma eludongeni, sebenzisa i-8mm × 100mm iibholiti zokwandisa, lungisa iibholithi zokwandisa eludongeni, ufake i-transmitter, uze uyilungise nge-nati, i-elastic pad kunye ne-flat pad, njengoko kubonisiwe kumfanekiso wesi-3.
Emva kokuba i-transmitter ilungisiwe, susa isigqubuthelo esingaphezulu kwaye ungenise intambo kwi-inlet.Jonga umzobo wesakhiwo seetheminali zoqhagamshelo kunye ne-polarity elungileyo kunye nengalunganga (unxibelelwano lohlobo lwe-Ex), uze utshixe umdibaniso ongenamanzi, uqinise isigqubuthelo esingaphezulu emva kokujonga.
Qaphela: Uluvo kufuneka lube phantsi xa lufakiwe
Umzobo 3: Imilinganiselo yangaphandle kunye ne-bitmap yomngxuma onyukayo we-transmitter
1. Iintambo ezimbini zinconywa kwintambo yamandla kunye nomqondiso.Umgca wamandla USEBENZISA i-PVVP, kwaye umgca wesignali kufuneka wamkele isibini esijikiweyo esamkelwe ngamazwe ngamazwe (i-RVSP twisted pair).Ukusetyenziswa kweengcingo eziphothiweyo ezikhuselweyo kunceda ukunciphisa kunye nokuphelisa i-capacitance esasazwayo eyenziwa phakathi kweendlela ezimbini zonxibelelwano ze-485 kunye nokuphazamiseka kwendlela eqhelekileyo eyenziwa malunga neentambo zonxibelelwano.Umgama wothumelo lwe-485 uhlukile ngokocingo olukhethiweyo, kwaye ngokubanzi alufikeleli kumgama wothumelo oluphezulu lwethiyori.Kunconywa ukuba ungasebenzisi i-4 intambo engundoqo, amandla kunye nomqondiso usebenzisa ikhebula elifanayo.Umzobo we-4 ngumgca wesignali, kwaye umfanekiso wesi-5 ngumgca wamandla.
Umzobo 4: Umgca woMqondiso
Umzobo 5: Umgca wamandla
2. Ucingo lokudlulisa ekwakhiweni ukuphepha ukwenzeka kwe-loop, oko kukuthi, ukubunjwa kwe-coil ye-loop eninzi.
3. Xa ulwakhiwo kufuneka luhluke ngetyhubhu, kangangoko kunokwenzeka kude nocingo oluphezulu lombane, ukuphepha ukusondela kumbane onamandla, izibonakaliso zemagnethi ezinamandla.
Ibhasi ye-485 yokusebenzisa i-hand-in-hand structure, ngokuzinzileyo ukuphelisa uxhulumaniso lweenkwenkwezi kunye noqhagamshelwano lwe-bifurcation.Uxhulumaniso lweenkwenkwezi kunye nokudibanisa kwe-bifurcated kuya kuvelisa umqondiso wokubonisa, ngaloo ndlela uchaphazela unxibelelwano lwe-485.Ikhaka lidityaniswe nendlu yothumelo.Umzobo womgca uboniswe kumfanekiso wesi-6.
Umzobo 6: Itshathi yomgca eneenkcukacha
Umzobo wocingo ochanekileyo uboniswe kumfanekiso wesi-7 kwaye umzobo wocingo ongalunganga uboniswe kumfanekiso wesi-8.
Umzobo 7: Umzobo ochanekileyo wocingo
Umzobo 8: Umzobo wocingo olungalunganga
Ukuba umgama ude kakhulu, ukuphindaphinda kuyadingeka, kwaye indlela yokudibanisa iphinda iboniswe kumfanekiso 9. Umbane wokubonelela ngombane awuboniswa.
Umzobo 9:Indlela yoqhagamshelwano oluphindayo
4. Emva kokuba i-wiring igqityiwe, qhagamshela iindawo zothutho kuqala, unqumle intambo yamandla kunye nomgca wesignali, kwaye wenze uxhumano lokugqibela kwi-transmitter, njengoko kuboniswe kumfanekiso 2. Sebenzisa i-multimeter ukuvavanya ukuba kukho isiphaluka esifutshane phakathi kweempawu. kunye nemigca yamandla.Ixabiso lokumelana phakathi komgca wesignali A kunye no-B malunga ne-50-70 ohms.Nceda ujonge ukuba ingaba umamkeli anganxibelelana na nothumelo ngalunye kwaye emva koko uqhagamshele iindawo eziseleyo kuvavanyo.Cwangcisa iswitshi yokugqibela yokuhambisa ngoku eqhagamshelwe kuyo,Olunye iswitshi yokuhambisa iseti ku-1.
Qaphela:ukupheliswa kokuphela kuqhagamshelo ngocingo lwebhasi kuphela.Enye indlela yoqhagamshelwano lwengcingo ayivumelekanga.
Xa kukho iziqwenga ezininzi zokuhambisa kunye nomgama omde, nceda uqaphele apha ngezantsi:
Ukuba zonke iinqununu ziyasilela ukufumana idatha, kwaye ukukhanya kwesalathisi kwi-transmitter ayisebenzi, kubonisa ukuba ukunikezelwa kwamandla akukwazi ukubonelela ngoku okwaneleyo, kunye nolunye unikezelo lombane olufunekayo, ngoko kuyacetyiswa ukuba kusetyenziswe umbane ophezulu. .Kwindawo phakathi konikezelo lwamandla amabini okutshintsha, qhawula i-24V +, i-24V- iqhagamshelwe ukuphepha ukuphazamiseka phakathi kokunikezelwa kwamandla amabini okutshintsha.
B.Ukuba ilahleko ye-node inzulu, kungenxa yokuba umgama wonxibelelwano ude kakhulu, idatha yebhasi ayizinzile, kufuneka isebenzise i-repeater ukwandisa umgama wonxibelelwano.
5. Isithuthi socingo lwebhasi sinomnye kuphela ovulekileyo ovulekileyo we-passive relay.Xa ugxininiso lwegesi ludlula indawo ye-alam esetwe kwangaphambili i-relay ivalwe, ngaphantsi kwendawo ye-alam, i-relay iya kuqhawula umsebenzisi uya kwenza i-wiring ngokweemfuno.Ukuba ufuna ukulawula i-fan okanye ezinye izixhobo zangaphandle, nceda udibanise izixhobo zangaphandle kunye ne-interface ye-relay kwi-series kunikezelo lwamandla olufanelekileyo (njengoko kubonisiwe kumfanekiso we-10 umzobo we-wiring we-relay)
Figure 10 umzobo wocingo lwe-relay
I-RS485 yenkqubo yokuhambisa ibhasi enxulumene neengxaki kunye nezisombululo
1. Ezinye ii-terminals azikho idatha: ngokuqhelekileyo i-node ayisebenzisi amandla ngenxa yesizathu esithile sangaphandle, indlela yokujonga ukuba ukukhanya kwesalathisi kwibhodi yesekethe kukhanyisa. ngokwahlukeneyo.
2. Ukukhanya kwesalathisi kukhanya ngokuqhelekileyo, kodwa akukho datha.Kuyimfuneko ukujonga ukuba ngaba iingcingo ze-A kunye ne-B zidibaniswe ngokuqhelekileyo kunye nokuba zixhunyiwe kwi-reverse.Nciphisa unikezelo lwamandla lwale node uze uphinde udibanise intambo yedatha ukuze ubone ukuba ungayifumana le datha ye-node.Inqaku elikhethekileyo: musa ukuxhuma intambo yamandla kwi-port cable port, iya konakalisa kakhulu isixhobo se-RS485.
3. Uqhagamshelo lwetheminali luyafuneka.Ukuba i-485 i-wiring yebhasi inde kakhulu (ngaphezu kweemitha ezili-100), kuyacetyiswa ukuba uqhube uqhagamshelo lwesiphelo.Uqhagamshelwano lwesiphelo ludla ngokufuneka ekupheleni kwe-RS485, njengoko kubonisiwe kumfanekiso 2.Ukuba i-wiring yebhasi inde kakhulu, i-repeer uqhagamshelo lungasetyenziselwa ukwandisa umgama wothumelo.(qaphela: Ukuba i-RS485 iphinda isetyenzisiwe, akukho mfuneko yoqhagamshelo lwetheminali kwindawo ephindayo kwaye udibaniso lwangaphakathi lugqityiwe.
4. Ngaphandle kweengxaki ezi ngasentla, ukuba isalathisi sokukhanya sikhanyisa ngokuqhelekileyo (i-1 flash ngesibini) kwaye unxibelelwano luhluleka, i-node inokugwetywa yonakaliswa (ngaphandle kokuba unxibelelwano lomgca luqhelekileyo) .Ukuba inani elikhulu lee-nodes alikwazi ukunxibelelana, nceda kuqala iqinisekisa ukuba amandla kunye nemigca yonxibelelwano ilungile, kwaye emva koko uqhagamshelane nenkxaso yobugcisa efanelekileyo.
Ixesha lewaranti yesixhobo sokuvavanya igesi eyenziwe yinkampani yethu ziinyanga ezili-12, eziqala ngomhla wokuhanjiswa.Kwinkqubo yokusetyenziswa, umsebenzisi kufuneka athobele imiyalelo yokusebenza, ngenxa yokusetyenziswa okungafanelekanga, okanye iimeko zokusebenza ezibangele isixhobo. umonakalo, awugqunywanga kwiwaranti.
Nceda ufunde imiyalelo ngononophelo ngaphambi kokusebenzisa isixhobo.
Ukusebenza kwesixhobo kufuneka kulandele imigaqo echazwe kwimiyalelo.
Ukugcinwa kwezixhobo kunye nokutshintshwa kwamacandelo kuya kusingathwa yinkampani yethu okanye izikhululo zolondolozo zendawo.
Ukuba umsebenzisi akayilandeli le miyalelo ingentla, qalisa okanye utshintshe iindawo, ukuthembeka kwesixhobo kufuneka kube luxanduva lomqhubi.
Ukusetyenziswa kwesixhobo kuya kuhambelana nemithetho nemigaqo yabasemagunyeni abafanelekileyo basekhaya kunye nolawulo lwesixhobo kumzi-mveliso.