Eminyakeni yamuva, izitolo ezinkulu zasekhaya, izitolo ezinkulu kanye namanye amabhizinisi ezentengiselwano abone izinzuzo ezinkulu zezohweboIsistimu ye-POSekuphathweni kwamabhizinisi ezentengiselwano, futhi bakhe uhlelo lwenethiwekhi ye-POS yezohwebo. Umgomo wokuklama nokufaka wesistimu yenethiwekhi yethulwa ngokuningiliziwe kumajenali ahlukahlukene wezimboni. Leli phepha lidingida kakhulu indlela yokukhetha esinye sezikena zebhakhodi njengengxenye yokutholwa kwedatha engaphambili yohlelo lwe-POS lokuhweba.
Kunezikena ezintathu ezijwayelekile zebhakhodi ezentengiso: isithwebuli sebhakhodi ye-CCD, isithwebuli sebhakhodi ye-laser kanye nesikena sebhakhodi ye-laser ye-engeli.
1. Isithwebuli sebhakhodi ye-CCDisebenzisa umgomo wokuhlanganisa izithombe zikagesi ( CCD) ukuze ifanekisele iphethini yokuphrinta yebhakhodi, bese iyikhipha ikhodi. Izinzuzo zayo yilezi: akukho shaft, motor, impilo ende yenkonzo. Intengo ishibhile.
Lapho ukhetha isithwebuli se-CCD esisodwa, imingcele emibili ebalulekile yilena: Ukujula kwenkambu:
Ngenxa yokuthi isimiso sokucabanga se-CCD sifana nekhamera, uma ufuna ukwandisa ukujula kwensimu, i-lens yokwandisa ehambisanayo, ukuze umthamo we-CCD mkhulu kakhulu, uphazamise ukusebenza. I-CCD enhle kufanele ifundeke ngaphandle kokunamathela kubhakhodi, nevolumu emaphakathi nokusebenza okunethezekile.
Ukulungiswa : Uma ufuna ukuthuthukisa ukulungiswa kwe-CCD, kufanele ukhulise ingxenye yeyunithi ye-elementi ezwelayo esithombeni. I-CCD eshibhile ngokuvamile ingamaphikseli amahlanu, funda i-EAN, i-UPC kanye nenye ikhodi yezentengiso yanele, kokunye ukuqaphela ikhodi kuzoba nzima. I-CCD yebanga elimaphakathi ingaphezu kwamaphikseli angu-1024, amanye aze afike ku-2048pixe1, angakwazi ukuhlukanisa ingxenye encane yeyunithi yekhodi yebha engu-0.1mm.
2. Iisithwebuli sebhakhodi ye-laseriyiskena somugqa owodwa esisebenzisa amashubhu amabili e-laser njengemithombo yokukhanya. Ikakhulukazi inezinhlobo ezimbili: isibuko esijikelezayo nesibuko se-vibrato
Esebenzisa injini enesivinini esikhulu ukushayela iqembu le-prism ukuze lijikeleze, ukuze i-laser yephoyinti elilodwa ekhishwa amashubhu amabili ibe umugqa. Lo mugqa we-laser uskenwa kukhodi yebha ngokwayo. Ibhakhodi emnyama idonsa iningi le-laser, futhi emhlophe ikhombisa iningi le-laser. Ngesikhathi esifanayo, ukukhanya okubonisiwe kubonakala nge-optical lens 'enjinini', futhi kugxile ku-photoelectric three-tube. Okubonwa esizindeni sesikhathi kubonisa ukuthi izinga eliphansi le-photoelectric lamashubhu amathathu ebhandeni elimnyama lekhodi, kanye nezinga eliphezulu ebhandeni elimhlophe. Ngemva kokukhulisa kaningana, igagasi elingunxande liyabunjwa, futhi igagasi elingunxande lihambisana nekhodi yebha eskeniwe. I-waveform etholiwe idluliselwa kusikhikhoda ngomugqa wedatha. 'I-decoder' empeleni iyi-chip microcomputer eyodwa. Incike kakhulu ekuphazamisekeni kanye nekhawunta ye-chip eyodwa ukuze urekhode isikhathi sokugxuma kwe-waveform. Amalungu afanayo aqoqiwe akhishwa ikhodi ekuskeneni okulandelayo noma ukuskena kwasemuva. Kuncike kakhulu esilinganisweni sesikhathi salezi zibalo ukuze kuqondwe ibhakhodi ehambisanayo. Ekusetshenzisweni okungokoqobo, kunezinhlobo eziningi zekhodi yebha, kanye nemibimbi yokupakisha engavamile njengendawo yebhamuza, ngakho ingxenye yokuqopha idinga ukubekezelelwa okuthile kwamaphutha, kodwa ayikwazi ukukhiqiza ikhodi yephutha. Njengamanje, i-decoder ngokuvamile ihlukaniswe yaba yi-8 bit kanye ne-32 bit, inzuzo ye-8 bit iyintengo, i-32 bit ijubane. Imakethe yekhodi ye-laser igcwele ama-dragons, kodwa futhi ilandele uthuli lwesithwebuli se-ccd, amanani awile ngokuphindaphindiwe, i-cottage, kodwa kunabakhiqizi abaningana abanamandla basekhaya, abathengi badinga ukucabangela ngokucophelela ukuthi yiluphi uhlobo lomkhiqizo, khetha olufaneleka kakhulu.
Izindleko zesibuko esiqhaqhazelayo ziphansi kunesibuko esizungezayo, kodwa lesi simiso sesibhamu se-laser akulula ukuthuthukisa isivinini sokuskena, ngokuvamile izikhathi ezingu-33 ngomzuzwana.
Uma amabhizinisi ezentengiselwano ekhetha esisodwa sezikena ze-laser, kubaluleke kakhulu ukunaka isivinini sokuskena nokulungiswa, futhi ukujula kwenkundla akuyona into esemqoka. Ngoba lapho ukujula kwenkambu kukhula, ukulungiswa kuzoncishiswa kakhulu. Isithwebuli se-laser esibamba ngesandla esihle kufanele sibe nesivinini esikhulu sokuskena nokucaca okuphezulu ngaphakathi kokujula okugxilile kwenkambu.
3. Isithwebuli se-engeli yi-aisithwebuli sebhakhodiehlehlisa i-laser ekhishwa i-laser diode noma imigqa yokuskena eminingi ngohlelo lokubonwayo. Inhloso eyinhloko ukunciphisa umsebenzi wokuqondanisa ibhakhodi lapho othatha imali efaka idatha yekhodi yebha. Enye yezinketho kufanele igxile ekusabalaliseni kwendawo yomugqa wokuskena :
1.Kunemigqa eminingi ehambisanayo ohlangothini olulodwa
2. Imigqa yokuskena eminingi idlula ngesikhathi esisodwa
3. Amathuba okuhumusha iphuzu ngalinye avame ukungaguquguquki endaweni ethile
Isikena se-engeli esihambisana namaphuzu amathathu angenhla kufanele sibe esinye sezinhlelo zokusebenza ezikhethwa yibhizinisi.
Xhumana nathi
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Isikhathi sokuthumela: Nov-22-2022