peji

nhau

Iyo bar code scanner chiridzwa chinoshandiswa mune zvekutengesa POS masisitimu.Kune mapoka maviri makuru, imwe ndeyekushandiswa kweakajairwa tracers uye ekutengesa scanner.Commercial inonyanya kukamurwa kuita: CCD scanner, laser handheld scanner uye ese-angle laser scanner matatu.

CCD scanner

CCD scanner inoshandisa musimboti wephotoelectric coupling (CCD) kufananidzira iyo barcode yakadhindwa patani uye wozoidhidha.Zvayakanakira ndezvekuti:

Hapana shaft, mota, hupenyu hurefu hwebasa;

cheapness.

Pakusarudza CCD scanner, ma paramita maviri anonyanya kukosha:

Kudzika kwemunda

Nokuti iyo yekufungidzira musimboti weCCD wakafanana nekamera, kana iwe uchida kuwedzera kudzika kwemunda, iwe unofanirwa kuenderana nekuwedzera lens, izvo zvinoita kuti CCD ive yakakura uye isingaite kushanda.Yakanakisa CCD inogona kuverengerwa isina kunamatira kubha kodhi, uye vhoriyamu iri pakati nepakati uye kushanda kwacho kwakasununguka.

kugadzirisa simba

Kana isu tichida kuvandudza kugadziriswa kweCCD, isu tinofanirwa kuwedzera chikamu chechikamu chephotosensitive chinhu panzvimbo yekufungidzira.Mutengo wakaderera CCD kazhinji 5-port pixel.Zvakakwana kuverenga EAN, UPC uye mamwe makodhi ekutengesa, asi zvichange zvakaoma kuverenga mamwe makodhi.Iyo yepakati-renji CCD inowanzoita 1024pixel, uye vamwe vanotosvika 2048pixel, iyo inogona kusiyanisa bar kodhi neyakatetepa unit element ye0.1mm.