Imveliso yeeMitha zoMbane

Iintlobo zeeMitha zoMbane eziphumayo

Iziphumo ze-Analog

1. Isiphumo seVoltage
   Iimitha ezininzi zokuhamba zibonelela nge-analog output esekelwe kwi-voltage. Umzekelo, uluhlu oluqhelekileyo lunokuba yi-0 - 5V okanye i-0 - 10V. Ixabiso le-voltage lilingana ne-flow rate elinganisiweyo. Xa i-flow rate ikwixabiso layo elincinci elinokubonwa ngaphakathi koluhlu lwemitha, i-output voltage ikwisiphelo esisezantsi sesikali, masithi yi-0V. Njengoko i-flow rate isanda ngomgca, i-output voltage iyanda ngokulinganisela ide ifikelele kwixabiso eliphezulu (umz., i-5V okanye i-10V) kwi-flow rate ephezulu imitha ilinganiswa ukuze ilinganiswe. Olu hlobo lwe-output luluncedo kwizicelo apho isixhobo sokwamkela, esifana nomlawuli olula okanye i-data logger eneendlela zokufaka ze-analog, sinokutolika kwaye sicubungule ngokulula isignali ye-voltage.
2. Iziphumo zangoku
   I-4 - 20mA current loop ngumgangatho osetyenziswa kakhulu kwimveliso ye-analog kwihlabathi lemizi-mveliso. Kolu seto, i-4mA imele isantya esincinci sokuhamba (ukuhamba kwe-zero kudla ngokuhla ukuya kwi-4mA ukuze kwahlulwe kwi-sensor ephukileyo okanye eqhawukileyo, apho i-current iya kuba yi-0mA), kwaye i-20mA ihambelana nesantya esiphezulu sokuhamba. Inzuzo yesiphumo samandla ngaphezu kwesiphumo se-voltage kukuba ayikhuselekanga kakhulu kwingxolo yombane xa kuqhutywa iintambo ezinde. Oku kuyenza ifaneleke kwizicelo apho imitha yokuhamba ifakelwe kwindawo yemizi-mveliso enengxolo okanye xa isignali kufuneka idluliselwe kumgama omde ukuya kwigumbi lolawulo.

Iziphumo zeDijithali

1. Isiphumo sePulse
   Iimitha zokuhamba ezisebenzisa i-pulse output zivelisa ii-pulse zombane. Inani lee-pulse ngeyunithi yexesha linxulumene ngokuthe ngqo nesantya sokuhamba. Umzekelo, i-flow meter inokulinganiswa ngendlela yokuba kwilitha nganye yolwelo oludlulayo, ivelise inani elithile lee-pulse, masithi ii-pulse ezili-100 ngelitha. Ngokubala ezi pulse kwixesha elithile, umthamo opheleleyo wokuhamba kolwelo unokubalwa. Iziphumo ze-pulse zihlala zisetyenziswa kwizicelo apho iisekethe zokubala ezilula zinokusetyenziswa ngokulula, njengakwiinkqubo zokujonga ukuhamba kolwelo ezingabizi kakhulu okanye kwiimeko apho isixhobo sokwamkela sinamandla okugcina i-pulse.
2. Iziphumo zoNxibelelwano oluQhelekileyo
   Kukho iindlela ezahlukeneyo zonxibelelwano ezisetyenziswa kwiziphumo zemitha yokuhamba. I-RS – 232, i-RS – 485, kunye neModbus zezinye zezona zidumileyo. Nge-RS – 232, idatha idluliselwa ngokulandelelana phakathi kwemitha yokuhamba kunye nesixhobo esamkelayo, njengekhompyutha okanye isilawuli se-logic esicwangcisiweyo (PLC). I-RS – 485, kwelinye icala, inokuxhasa izixhobo ezininzi kwibhasi enye kwaye inomgama omde wokudlulisela xa ithelekiswa ne-RS – 232. I-Modbus yinkqubo eyamkelweyo ngokubanzi engasetyenziswa kuzo zombini i-RS – 485 kunye ne-Ethernet. Ngezi ziphumo zonxibelelwano ezihamba ngokulandelelana, imitha yokuhamba ingathumeli kuphela ixabiso lesantya sokuhamba kwangoku kodwa kunye nolwazi olongezelelweyo olufana nokuhamba okuqokelelweyo, iiflegi zesimo (ezibonisa ukuba imitha isebenza ngokuqhelekileyo okanye ifumene impazamo), kunye nedatha yokulinganisa. Olu seti lutyebileyo lolwazi lubalulekile kwiinkqubo zoshishino ezinzima apho kufuneka khona ukujonga nokulawula okubanzi.

Iziphumo ezingenazingcingo

Kwiminyaka yakutshanje, ngenxa yokuqhubela phambili kwetekhnoloji engenazingcingo, ii-flow meter ziya zixhotyiswa ngakumbi ngezakhono zokukhupha ezingenazingcingo. I-Bluetooth, i-Wi-Fi, kunye ne-ZigBee zezinye zeenkqubo ezingenazingcingo ezisetyenziswayo. I-Bluetooth ifanelekile kunxibelelwano olufutshane, oluhlala lusetyenziswa kwizicelo apho ingcali kufuneka ifikelele ngokukhawuleza kwidatha ye-flow meter isebenzisa isixhobo esiphathwayo, njengakwixesha lokulinganisa kwindawo okanye ukusombulula iingxaki. I-Wi-Fi ivumela ukudluliselwa kwedatha ngesantya esiphezulu kwindawo enkulu, okuvumela idatha ye-flow meter ukuba idityaniswe ngokulula kwinethiwekhi ebanzi yesityalo kwaye ifikeleleke kwiindawo ezininzi. I-ZigBee, enokusetyenziswa kwamandla aphantsi kunye nobuchule bayo benethiwekhi ye-mesh yokuziphilisa, iluncedo kwizicelo apho ii-flow meter ezininzi kufuneka ziqhagamshelwe kulwakhiwo olukhulu lwemizi-mveliso, kwaye ukugcinwa kwamandla kunye nonxibelelwano oluthembekileyo kubalulekile.

Ukuqukumbela, iziphumo zeimitha yokuhambaiza ngeendlela ezahlukeneyo, nganye ineenzuzo zayo kunye nokusetyenziswa kwayo. Ukukhethwa kohlobo lwemveliso kuxhomekeke kwizinto ezifana nohlobo lwesicelo, umgama ekufuneka uhanjwe sisignali, uhlobo lwesixhobo sokwamkela, kunye nobunzima benkqubo iyonke apho imitha yokuhamba idityaniswe khona. Ukuqonda ezi ndlela zahlukeneyo zokukhupha kubalulekile kwiinjineli kunye nabaqhubi ukuze basebenzise idatha yemitha yokuhamba ngokufanelekileyo ukuphucula iinkqubo zoshishino.