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Ukusetyenziswa kweTekhnoloji yokuchongwa kweRadio Frequency kwiiNcango zoMthi eziLaminated
Iimpawu zenkqubo yokuvelisa umnyango weplanga kunye neemfuno zokulawula, sebenzisa Iithegi ze-elektroniki ze-RFID ukusombulula imveliso, indawo yokugcina impahla, amalungiselelo, ukufakwa kunye neengxaki emva kokuthengisa.
Abstract: Ngokweempawu zenkqubo yemveliso kunye neemfuno zolawulo lweengcango zokhuni ezilaminated, ukuchongwa kwamaza kanomathotholo (I-RFID) iithegi ze-elektroniki zisetyenziswa njengeyona nto iphambili yokuphatha ulwazi kwimveliso, indawo yokugcina impahla, amalungiselelo, ufakelo nasemva-kwentengiso, kunye nenkqubo esasazwa ngokuthe nkqo esekelwe kwi-teknoloji ye-RFID yakhiwe. Ukufunyanwa kolwazi lokwenziwa kocango lomthi kunye nesakhiwo semodeli yokucubungula, kunye nenkqubo yokuphunyezwa kwemodyuli nganye esebenzayo.
Iziphumo zesicelo zingqina ukuba le ngqokelela yolwazi kunye nemodeli yokucubungula inokutshintsha inkqubo yekhowudi yamacala amabini, kunye nokusombulula iingxaki kwinkqubo yemveli yokuvelisa ukuba ikhowudi ye-dimensional ilula ukuba ingcoliswe, iikhowudi eziphindaphindiweyo, idatha inokufundwa kodwa ingabhalwa, kwaye ulwazi lwedatha alukho. Ukuveliswa kweengcango zokhuni Ukusebenza kuye kwandiswa ukusuka 1.5 min/ifestile ukuya 1.0 min/ifestile, kunye nexesha elibanzi lolawulo lincitshisiwe ukusuka 10-15 imizuzu/ifestile ukuya 5 imizuzu/ifestile, ukuqonda ukuhlanganiswa okupheleleyo kokucwangciswa komnyango wokhuni, indawo yokugcina impahla, amalungiselelo, ukufakela kunye nokugcinwa. ulawulo lwenkqubo.
Amagama aphambili: imveliso yocango lwamaplanga elaminethiweyo, Itekhnoloji yeRFID, ulawulo oludibeneyo, Itekhnoloji ye-IoT RFID
Njengolwahlulo lweshishini lempahla yendlu yemveli, Ishishini locango lwamaplanga laseTshayina lihlala likhulisa ubungakanani bayo bemarike. Ngokuya nzulu kotshintsho lwedijithali kunye nobukrelekrele baseTshayina, ingenisa ithuba elikhulu lenguqu, ukuphucula, kunye nokusungula kunye nophuhliso. Indlela yokuvelisa yangoku yeengcango zokhuni zaseTshayina zibonakaliswa yimveliso eyenziwe ngokwezifiso, inkqubo yemveliso kunye nolwakhiwo lwemveliso lunzima ngokwentelekiso, kukho iintlobo ezininzi zemathiriyeli ekrwada kunye namalungu, kwaye imveliso inexabiso eliphezulu elongezelelweyo. Inqanaba layo lokuvelisa limele inqanaba lokwenziwa kweemveliso zokhuni eziphezulu e-China ukuya kwinqanaba elithile.
Ukusetyenziswa kwetekhnoloji yokuchonga kanomathotholo kulwazi oludityanisiweyo lwemowudi yemveliso yeengcango zamaplanga ezaminated
Ngoku, iinkqubo zokuvelisa amashishini ahlukeneyo ecango lamaplanga e-China ahluke kancinane, kwaye uqwalaselo lwezixhobo luguquguquka. Umgangatho wemveliso kunye nokusebenza kakuhle kwemveliso ubukhulu becala kuxhomekeke kwinqanaba lobugcisa labasebenzi kunye nezixhobo zokuzimela zodwa, kwaye umjikelo wemveliso mde noko.
Uninzi lwamashishini asebenzisa ikhowudi yebhakhowudi okanye ikhowudi enamacala amabini njengomthwali wolwazi kwinkqubo yokusetyenzwa kwamalungu kunye nokusasazwa., ubukhulu becala sithembele kwinkqubo yeMES yomzi-mveliso, ukuxhomekeka kuthungelwano ngonxibelelwano, iimfuno zezixhobo nazo ziphezulu, kwaye umthamo wokugcina ulwazi uncinci, umsebenzi wokufunda ngendlela enye kuphela , umphezulu uhlala wonakaliswa kwaye ulwazi lokucubungula alukwazi ukufundwa, okwenza kube nzima ukulandelela inkqubela yemveliso kwikhonkco lolawulo, izibalo zokulahleka kwezinto kunye nemveliso azikho ngexesha kwaye zichanekile, Ulawulo lwendawo yokugcina impahla lunesiphithiphithi, kwaye "imiyalelo engalunganga" zivela rhoqo kulungiselelo kunye namakhonkco ofakelo. Isiganeko, kubangela inkcitho engeyomfuneko yexesha kunye neendleko zempahla.
Ukuchongwa kweRadio Frequency (I-RFID) itekhnoloji yitekhnoloji yokuchonga ezenzekelayo engaqhagamshelwanga, umgaqo ongengonxibelelwano lwedatha phakathi komfundi kunye nethegi ukuchonga ngokuzenzekelayo into ekujoliswe kuyo kwaye ufumane idatha efanelekileyo, inkqubo yokuqaphela ayifuni ukungenelela ngesandla, kwaye inokusebenza ngamandla kwiindawo ezahlukeneyo zemizi-mveliso.
I-RFID ineenzuzo zomthamo omkhulu wokugcina, umgama omde wokufunda, iithagethi zokuchongwa ezininzi, kunye noguqulelo oluntsonkothileyo lwedatha. Isetyenziswe ngokubanzi kwiintengiso zeevenkile zesebe, ulungiselelo lokugcina impahla, uthutho, kunye nokuveliswa kweemoto.
Ngoku, I-RFID isetyenziswe kwamanye amazwe angaphandle kwintsimi yefenitshala kunye neemveliso zokhuni. Umzekelo, Northway Industries, ifenitshala yamaplanga eyaziwayo kunye nezixhobo zeofisi ngokwezifiso eUnited States, usebenzisa Iinkqubo zeRFID ukulandelela inkqubo yokwenziwa kweemveliso; Umthombo Itekhnoloji ye-UHF RFID yadityaniswa kumzi-mveliso weValede Cambra ukuphucula ukusebenza kakuhle kwemveliso kunye nokonga iindleko zolawulo; Thomasville Farniture Industries, umenzi wefenitshala odumileyo waseMelika, kusetyenziswe inethiwekhi ye-RFID kunye neziseko zophuhliso ukubonelela ngokulandeleka kwemveliso kubathengi abakhulu.
Ngoku, kukho iingxelo ezimbalwa malunga nokusetyenziswa kobuchwephesha be-RFID kwishishini lokwenziwa kweengcango zamaplanga ekhaya nakwamanye amazwe. Ngenxa yoku, ngokweempawu zemveliso yeengcango zokhuni ezilaminethiweyo kunye neemfuno zolawulo lwemveliso, olu phononongo luthatha I-RFID njengomphathi oyintloko we-laminated door door production and management information, ifunda indlela yokusetyenziswa kwetekhnoloji yeRFID kwimigca yokuvelisa yocango lwamaplanga, kwaye yakhe ucango lwamaplanga elaminethiweyo olusekwe kubuchwephesha beRFID. Imodeli yesicelo yokuqokelela ulwazi kunye nokusetyenzwa kwemveliso yocango lwamaplanga iqonda ukuqokelelwa kolwazi kunye nexesha langempela lokulandelela kunye nokubeka iliso kuyo yonke inkqubo yokwenziwa kocango lwamaplanga., uthutho, ufakelo nasemva-kwentengiso.
1. Ukwakhiwa kwenkqubo yeRFID kunye nomgaqo wokusebenza
Inkqubo yeRFID inamacandelo amathathu, kuquka: Ithegi ye-elektroniki ye-RFID (TAG, transponder), umfundi kunye nenkqubo yesicelo.
1) Ileyibhile ye-elektroniki ipakishwe kwigqabi lomnyango kwaye iqulethe i-chip kunye ne-eriyali yethegi. Itshiphu ezinikeleyo ngoyena mphathiswa wedatha wokuchongwa kwamaza kanomathotholo. Idatha kwifomathi ethile igcinwa kwi-chip ezinikeleyo njengolwazi olufundwayo lwemveliso eza kuchongwa. I-eriyali eyakhelweyo isetyenziswa ikakhulu kuNxibelelwano neyunithi yefrikhwensi yerediyo kumfundi.
2) Umfundi sisixhobo sokufunda okanye sokufunda nokubhala ulwazi lwethegi ye-elektroniki. Umsebenzi wayo ophambili kukulawula iyunithi yefrikhwensi yerediyo yangaphakathi ukuhambisa imiqondiso yokufunda kwithegi ye-elektroniki, fumana impendulo yethegi, kwaye uthumele idatha yokuchonga imveliso kunye nolunye ulwazi olufanelekileyo kwithegi kumamkeli.
Olu phando ikakhulu lusebenzisa i-splied reader esisigxina ukufunda ulwazi lwedatha yokucubungula ngaphambili kwisixhobo somgca wemveliso, kwaye isebenzisa umfundi ophathwa ngesandla ukulawula inkqubo yemveliso kwindawo yokugcina, ukuthutha kunye nendibano yeengcango zokhuni.
3) Inkqubo yesicelo ikakhulu yenziwe yi-middleware kunye nesoftware yesicelo. I-middleware inokubhala kwaye ifunde idatha kwithegi ngokusebenzisa umfundi, kwaye uqhagamshele umfundi kunye nesoftware yesicelo. Isoftware yesicelo ikakhulu ibandakanya imveliso yeshishini kunye nesoftware yolwazi lolawulo, njengoLawulo lwezibonelelo zeshishini (usetyenziso lwenkqubo kunye neemveliso, APS), Icebo lonikezo lwezeshishini (Icebo lonikezo lwezeshishini, ERP) kunye noyilo/ukwenziwa kweenkuni ngoncedo lwekhompyutha (iinkuni CAD / CAM, WCC), njl. Ukuqulunqwa okukodwa kuboniswe kuMzobo 1.
Umzobo 1 Ukuqulunqwa kwenkqubo yeRFID - Umzekelo weSicelo se-IOT
Umgaqo osebenzayo wenkqubo kukuba emva kokuba igqabi lomnyango elifakwe kwileyibhile ye-elektroniki lingena kwi-antenna magnetic field., ifumana umqondiso womthwali othunyelwe yi-front-end (okanye i-terminal ephathwayo) umfundi wezixhobo zokulungisa, ifumana amandla afunekayo ngokusebenzisa umsinga owenziweyo, kwaye ithumela uphawu olugcinwe kwitshiphu enikezelweyo. Ulwazi lwemveliso yomnyango wokhuni, okanye ngokusebenzayo thumela isignali ethile yamaza. Umfundi ufunda aze ahluze ulwazi, kwaye ihambisa amaza kanomathotholo amandla okuphindaphindeka okuthe ngqo ngokusebenzisa isidluliseli se-antenna ukuqhuba isekethe ye-transponder ukuthumela idatha yangaphakathi kwinkqubo yolwazi ephakathi kuhlalutyo olufanelekileyo.. Ekugqibeleni, ezi datha zithunyelwa kwiprogram yesicelo ukwenzela ukucubungula okuhambelanayo.
2. Inkqubo yokuvelisa umnyango weplanga kunye ne-RFID yesicelo sohlalutyo lweemfuno
2.1 Inkqubo yokuvelisa ucango lwamaplanga elaminethiweyo
Umnyango wokhuni olaminated ngumnyango weplanga owenziwe nge-veneer, iphepha lokuhombisa okanye ezinye izinto zokuhombisa, kwaye isakhelo socango sizaliswe ngezinto eziphambili zomnyango. Umnyango wokhuni wenziwa ngezinto ezininzi ezinobumba ngokusebenzisa i-lamination. Iindleko eziphezulu zokusebenza zithandwa ngakumbi ngabathengi. Ukususela ekusetyenzweni kwezinto ezikrwada ukuya kufakelo lwemveliso egqityiweyo, iingcango zamaplanga elaminethiweyo kufuneka zidlule ekulungiseleleni izinto ezikrwada, imveliso, ukuhlolwa komgangatho, ukupakishwa, yokugcina, ukuhanjiswa kunye nofakelo, njengoko kubonisiwe kuMfanekiso 2.
Umzobo 2 Iikhonkco zokuvelisa kunye nokuhanjiswa kweengcango zokhuni ezilaminated
Xa kuthelekiswa nefenitshala yephaneli, umnyango weplanga owenziwe nge-laminated uhlanganiswe emva kokuba iphaneli kunye nesakhelo zidibaniswe, kwaye into elandelayo yokucubungula yinto epheleleyo, yiyo i, enye okanye ezimbalwa kakhulu iithegi ze-elektroniki ze-RFID ziyafuneka ukugqiba ingqokelela yolwazi. Ukwengeza, ukumila kocango lwamaplanga elaminethiweyo luqinisiwe, kwaye kuphela ubungakanani obahlukileyo ngokweemfuno zokwenza ngokwezifiso. Ithatha indawo encinci, kwaye ngenxa yokuba kukho isithuba esithile ngaphakathi kondoqo wocango, ilungele ukupakishwa kweethegi ze-elektroniki ze-RFID. Ngoko ke, kwinkqubo yokwenziwa kweengcango zokhuni ezenziwe nge-laminated, Kukhethwa ngokubanzi ukubeka ithegi ye-RFID yombane ngaphakathi kwegqabi locango emva kokuba isakhelo sidityanisiwe naphambi kokuba ipaneli icinezelwe..
2.2 Uhlalutyo lweeMfuno zeSicelo se-RFID
Kukho iinkqubo ezininzi zokwenziwa kweengcango zokhuni, kunye nezixhobo ezininzi ezibandakanyekayo. Nangona izixhobo ezininzi kumgca wokuvelisa umnyango weplanga okhoyo unokucutshungulwa ngokuzenzekelayo ngokuqaphela iibhakhowudi, bagxininiswe ikakhulu kwisarha emacala amane egqabi locango, ukutywinwa komphetho, ukuvula iindawo zokubeka umngxuma wehardware kunye namanye amakhonkco. Ulawulo lwedijithali lwenkqubo yonke aluzange lwenziwe, kwaye ingqokelela yolwazi oluzenzekelayo yenkqubo yonke ayikho, ukwenza ulawulo lwe-intanethi kunye nolawulo lube nzima.
Nje ukuba umgangatho wemveliso okanye ingxaki yesixhobo ivele, kunzima ukuyisombulula ngokukhawuleza, ayinakuqinisekisa umgangatho wemveliso, kwaye ichaphazela ukusebenza kakuhle kolawulo lwemveliso. Iimfuno zesicelo se-RFID kwikhonkco nganye yemveliso yomnyango wokhuni kunye nokujikeleza zihlalutywa ngolu hlobo lulandelayo.
1) Ukuqonda ulawulo oluselubala lwemveliso. Ngokusebenzisa iithegi ze-elektroniki ze-RFID njengomphathi wolwazi, kuyenzeka ukuba ufumane kwaye ubhale ulwazi oluphambili malunga nobume beemveliso kwizigaba zokusetyenzwa, uthutho, ukufakwa kunye nokuthengiswa emva kwexesha lokwenyani nangempumelelo, kunye nokuqonda ngexesha elifanelekileyo ulwazi lwemeko yokusebenza kwizigaba ezifanelekileyo zeemveliso eziqhubekayo, ukuze kugwetywe abaphathi Ukubonelela ngenkxaso yedatha eyaneleyo ekwenzeni izigqibo.
I-RFID TAGS
2) Qonda ulawulo olubhityileyo lwemveliso. Ukusetyenziswa kwetekhnoloji yeRFID ukuqonda ukulandelela ixesha lokwenyani kwenkqubo yemveliso kunokwenza ukuba amashishini azi imeko yemveliso ngexesha elifanelekileyo., kunye nokulungelelanisa ngokuguquguqukayo umthamo wemveliso ngokweemfuno ze-odolo kunye namakhonkco enkqubo, ukuze kwandiswe ulungelelwaniso lwemveliso. Le ndlela inokwenza ulawulo lweworkshop lunciphe ngakumbi, imveliso bhetyebhetye ngakumbi, kunye nokunceda amashishini afezekise ulawulo lwemveliso olusebenzayo.
3) Ukuqonda ulawulo olukrelekrele lwenkqubo yemveliso. Ngeteknoloji yeRFID, ulwazi olucwangcisiweyo lweebhetshi ezahlukeneyo, iinkcukacha, ubukhulu, kunye nemibala yeengcango zokhuni inokuchongwa kwaye igcinwe, kunye nolandelelwano lokucutshungulwa kwezixhobo zokusebenza ezifana nokucinezela iqabunga locango, Ukusarha amacala amane, kunye hardware umngxuma slot processing inokulawulwa ukuphucula ukuveliswa obukrelekrele inkqubo yemveliso. inqanaba.
4) Qonda ulawulo lwe-intanethi lomgangatho wemveliso. Ujolise kwiingxaki zokusarha macala amane, ukutywinwa komphetho, kunye ne-hardware hole groove processing kwinkqubo yangoku yokuvelisa umnyango wamaplanga, ukukrazula komphetho, itshisiwe, imithungo eveziweyo, imikrwelo, imingxuma, i-hardware hole groove dislocation, kunye nodidi lokuqhuba ukubhideka kulula ukwenzeka. Iimpawu ezifundekayo nezibhalekayo zeethegi ze-elektroniki ze-RFID, ngoncedo lobuchwepheshe bombono womatshini, ngokuzenzekelayo ubhala ulwazi olungafanelekanga kwiithegi ze-elektroniki ze-RFID ngaphakathi kocango lwamaplanga, iqonda ukwahlulwa okuzenzekelayo kweemveliso ezingafanelekanga kwinqanaba lamva, kwaye inokulandelela umgangatho wemveliso ngexesha lokuphucula umgangatho wemveliso kunye nokusebenza kakuhle kwemveliso.
5) Ukuqonda ulawulo lolwazi logcino kunye nolungiselelo. Ukusebenzisa umsebenzi wokuchonga umgama omde weethegi ze-elektroniki ze-RFID kunokuphucula inqanaba lolawulo lolwazi lwendawo yokugcina impahla., ukuchonga ngokukhawuleza ulwazi lomyalelo kunye nendawo yokugcina imveliso, ukwenza lula uhlolo kunye nokwamkelwa kweenkqubo zokungena kunye nokuphuma kwindawo yokugcina impahla, kwaye ugcine uhlolo, ukurekhoda, kunye nokucubungula okufunwa yimisebenzi yezandla yemveli. Uluhlu kunye namanye amakhonkco. Kwinkqubo yokuhambisa, Itekhnoloji yethegi yeRFID yamkelwe, enokunciphisa ilahleko ebangelwa yimpahla engafanelekanga kunye neempazamo zokuthumela, kunye nokuphucula umgangatho wenkonzo.
6) Ukufezekisa ukuchaneka kokusasazwa kunye nokufakwa. Ukusebenzisa umsebenzi wokufunda nokubhala we-RFID iithegi zombane kunokuqinisekisa ukuchaneka kweengcango zokhuni ezilungiselelweyo kwindawo yokuhambisa kunye nofakelo., ukuphepha isenzeko se "ulandelelwano olungalunganga" kunye nokubangela inkcitho engeyomfuneko yexesha kunye neendleko zempahla.
3. Imowudi yesicelo se-RFID kumgca wokuvelisa umnyango weplanga elaminethiweyo
3.1 Ulwakhiwo lweSistim eSasazwe ngokuNgqo
Ngokweempawu zenkqubo yokuvelisa umnyango weplanga elaminethiweyo kunye neemfuno zolawulo lwemveliso, imodeli yokwenziwa kocango lwamaplanga elaminethiweyo esekelwe kwitekhnoloji yeRFID iyafundwa. Yamkela isakhelo sosasazo esithe nkqo kwaye ikakhulu iqulathe iinxalenye ezintathu: umaleko wolawulo, umaleko wokwenziwa kunye neshishini, njengoko kubonisiwe kuMfanekiso 4. Bonisa.
Fig.4 Isakhelo semodeli yokuvelisa ucango lwamaplanga olusasazwe ngokuthe nkqo ngokusekelwe kubuchwepheshe be-RFID
1) Umaleko wokulawula: ibhekisa kuthungelwano lolawulo lweworkshop oluqulunqwe ngabafundi abangatshintshiyo kunye nezimvo ezinxulumeneyo ezifakwe kwisixhobo esifana nokudibanisa indawo yolawulo., Ukusarha amacala amane, banding edge, kunye nokusebenza komngxuma wehardware, kwaye igqibezela ulawulo lwesixhobo esikwisiza ngeekhompyutha , kuquka isilawuli esicwangcisiweyo sokuqiqa (PLC), isixhobo somatshini wokulawula amanani ekhompyuter (ulawulo lwamanani lwekhompyutha, CNC), ulawulo lwamanani olusasaziweyo (ulawulo lwamanani olusasaziweyo, I-DNC) kunye nenkqubo yolawulo esasazwayo (inkqubo yolawulo esasazwayo, DCS) kunye nezinye izixhobo.
Umsebenzi ophambili kukuqokelela ngokuzenzekelayo kunye nokudibanisa ulwazi lwedatha yemveliso ngokusebenzisa iithegi ze-elektroniki zeRFID ezisetwe kwangaphambili kumnyango womthi, ukuqonda unxibelelwano lwexesha lokwenyani kunye nokudibanisa ulwazi lwedatha phakathi kolwazi lwezixhobo kunye neenkqubo zesoftware kwizikhululo ezahlukeneyo kunye neenkqubo ezahlukeneyo, kunye nokuphucula imveliso. ukusebenza kakuhle kunye nenqanaba lolawulo.
2) Umaleko wokuphumeza: ibhekisa kwinkqubo yokwenziwa kwemveliso (inkqubo yokwenziwa kwemveliso, MES) ulawulo kunye nokulandelela imathiriyeli, imveliso, umgangatho, izixhobo, iibhetshi zamalungu aphambili kunye nolunye ulwazi kwinkqubo yokwenziwa.
Iimodyuli ezisebenzayo ezahlukeneyo zinokusetwa ukugqiba ukubola okucacileyo kolwazi lolawulo lwemveliso kwinqanaba leshishini, kunye nolawulo lwendawo yesixhobo ngasinye kwinqanaba lolawulo ukuze kuqinisekiswe inkqubo yokuvelisa eqhubekayo neqhelekileyo. Ngaxeshanye, ubuntununtunu bolawulo lwendawo bunokuphuculwa ngokubeka iliso kuluhlu lwezinto eziphathekayo, esweni ubume isixhobo, esweni inkqubela yemveliso, kunye nokujongwa kwesimo somgangatho, kunye nolwazi lwedatha oluhlalutyiweyo kunye nolucwangcisiweyo lunokudluliselwa kubaphathi bamashishini ngexesha lokwenyani lezigqibo zemveliso..
3) Uluhlu lweshishini: ikakhulu ibhekisa kwinkqubo yokusebenza yeshishini esisiseko efunwa lishishini ngexesha lemveliso eqhelekileyo kunye nokuthengisa, kuquka ulawulo lolawulo lwemveliso, Icebo lonikezo lwezeshishini, ulawulo lomgangatho wemveliso, ukugcinwa kunye nokuhanjiswa, ufakelo kunye emva-intengiso kunye nezinye iinkqubo isicelo. Ukusebenza kwezi nkqubo zesicelo kunokuphucula ulawulo olusebenzayo lwamashishini kunye nokuphucula ukuchaneka kwezigqibo zolawulo.
Nikezela ngeRFID Ileyibhile ePhakamileyo yeRFID yeChip Sticker - Itshiphu yeRF - China Electronic Label Manufacturer
3.2 Ukuqulunqwa kwemodyuli esebenzayo
Ngokweemfuno ze ukwenziwa kocango lwamaplanga kunye nolawulo lolungiselelo, imodeli yokwenziwa kocango lwamaplanga olusasazwa ngokuthe nkqo olusekelwe kubuchwepheshe beRFID ibandakanya iimodyuli ezisebenzayo ezintlanu: imodyuli yolawulo lwenkqubo, imodyuli ezenzekelayo yokuvelisa, Imodyuli yokujonga umgangatho wemveliso, imodyuli yokugcina nokuhambisa, kunye nofakelo lwemodyuli emva kokuthengisa. Ezi modyuli zinokubonelela ngolwazi olufanelekileyo lwedatha ngokweemfuno ezahlukeneyo, ukuze kuqatshelwe ulawulo olululo kunye nokusebenza kakuhle komgca wokuvelisa ucango lwamaplanga.
