The yatsa na'urar daukar hotan takardu a matsayin hanyar amfani Tantance kalmar sirri

A ranar, da walwa na al'umma da ke sa mu nemi hanyoyi daban-daban na rage samun da bayanai adana a kwamfuta. Haka kuma, mai amfani da izini, kuma Tantance kalmar sirri tsarin for kalmar sirri ne daya daga cikin na kowa, ko da yake yana da yawa drawbacks. An madadin to kalmar sirri kariya iya zama mai amfani Tantance haska sigogi, kamar wani zanen yatsa. Kuma yana daukan kawai yatsa na'urar daukar hotan takardu da kuma hade software, wanda ya zo tare da na'urar.

Mene ne yatsa na'urar daukar hotan takardu

zanen yatsa na'urar daukar hotan takardu ne a na'urar da karanta yatsa image da dukan da fasaloli, a cikin wani nau'i na yatsa, da kuma watsa ta scan sakamakon da software. Musamman da aikace-aikacen kwantanta da hoton tare da model halitta a mataki na wani haska kalmar sirri.

Iri yatsa Scanners

All yatsa Scanners, wanda a halin yanzu amfani, za a iya kasu uku kungiyoyin, dangane da zahirin manufa na aiki:

- semiconductor (silicon).

- Tantancewar;

- duban dan tayi.

semiconductor Scanners

Wannan irin na'urar daukar hotan takardu obtains wani image dangane semiconductor Properties cewa canza a lamba yanki na yatsa images da na'urar daukar hotan takardu. The aiki na da irin wannan scanning na'urorin iya karya da dama fasahar:

- Capacitive Scanners. The aiki na irin Scanners ne sakamako da cewa damar a pn-mika mulki semiconductor na'urar dabam ga lamba yatsa ridges da semiconductor abubuwa na matrix.

- wani matsin-m Scanners. The yatsa na'urar daukar hotan takardu na da irin wannan aiki ta amfani da musamman tsararru na piezoelectric abubuwa. Lokacin da yatsa ne a lamba tare da matrix, da ridges an dagula ta, da kuma ciki, bi da bi, babu. Bisa matsin exerted da matrix, da kuma wani hoton da aka kafa.

- thermo-Scanners. Ana dubawa na'urorin na irin wannan ne used na'urori masu auna sigina kunshi pyroelectric abubuwa. Wadannan na'urori masu auna sigina rikodin da zazzabi bambanci, bayan wanda shi ne tuba a cikin wani irin ƙarfin lantarki.

- RF Scanners. Scanners daga irin wannan kunshi mikroantenn cewa samar da wani rauni sigina, kuma a mayar da martani ga samu yatsa darajar daga electro-muradi karfi generated karshe yatsa image.

- Broaching thermo-Scanners. Same a matsayin thermo-Scanners. Iyakar abin da bambanci shi ne cewa dole ne ka riƙe ka yatsa a kan scanning surface, kuma ba su shafi da shi.

- Capacitive sheetfed na'urar daukar hotan takardu. The fasaha domin samar da yatsa image ne guda kamar yadda a cikin capacitance, amma Hanyar shiri ne halin a cewa yatsa ne da za'ayi a kan scanning surface.

- RF sheetfed na'urar daukar hotan takardu. Ka'idar aiki na wadannan na'urori ne guda kamar yadda a cikin rediyo-mita na'urorin, amma Hanyar cire hoton ba yatsa aikace-aikace da na'ura, da kuma a rike da yatsa a fadin ta surface.

Tantancewar Scanners

The yatsa na'urar daukar hotan takardu na da irin wannan obtains yatsa image ta hanyar wani Tantancewar Hanyar. The aiki na na'urorin na irin wannan ne daban-daban fasahar

- FTIR-Scanners. Wadannan na'urori amfani da ciki gani sakamako ne sosai.

- Fiber-na gani Scanners. The yatsa haska ne matrix Tantancewar fiber, a cikinsa kowane fiber qunshi wani photocell.

- electro-Tantancewar Scanners. Shiri image zo daga electrooptic polymer cewa kunshi wani haske-emitting Layer.

- Tantancewar sheetfed na'urar daukar hotan takardu. Wannan irin kayan aiki ne mai tsaftacewa fiber na'urorin a cikin abin da Dabarar wajibi ne a gudanar da yatsa a fadin surface kuma ba da ake ji da shi.

- tàkalmin Scanners. Don samun wani image ka bukatar ka rike ka yatsa a kan abin nadi, inda ya aikata yatsa images tare da papillary alamu.

- Non-lamba Scanners. yatsa scan ne da za'ayi a cikin wani contactless hanya. The yatsa ne amfani da rami inda shi ne hasken mahara kafofin, kuma ginanniyar kyamarar kama da siffar yatsa.

duban dan tayi Scanners

Wannan irin na'urar sikanin surface na ultrasonic tãguwar ruwa a cikin yatsa, da kuma bisa ga daukar nesa na nuna tãguwar ruwa daga depressions da tsinkaya da aka gina image. Wannan irin na'urar bambanta daga sama nazari akai cewa scanning sakamakon shi ne mafi inganci.