2023学年完整公开课版BarcodeReadingDevice(version2022)

物流信息技术与应用LogisticsinformationTechnologyandapplication2.1.8条码识读设备2.1.8Barcodereadingdevice“条码识读设备Barcodereadingequipment条码识读器的分类BarcodereaderclassificationBarcodereadingequipmentcanbedividedintocontactandnon-contactbarcodescannerfromthescanningmode.Contactreadingequipmentincludeslightpenandcardslotbarcodescanner;Non-contactreadingdevicesincludeCCDscannerandlaserscanner.条码识读设备从扫描方式上可分为接触和非接触两种条码扫描器。接触式识读设备包括光笔与卡槽式条码扫描器；非接触式识读设备包括CCD扫描器和激光扫描器。物流信息技术—条码识读设备Logisticsinformationtechnology-barcodereadingequipment(1)从扫描方式来分类(1)Classificationfromscanningmode“条码识读设备Barcodereadingequipment条码识读器的分类Barcodereaderclassification条码识读设备从操作方式上可分为手持式和固定式两种条码扫描器。Barcodereadingequipmentcanbedividedintohandheldandfixedbarcodescannerfromtheoperationmode.物流信息技术—条码识读设备Logisticsinformationtechnology-barcodereadingequipment(2)从操作方式来分类(2)Classificationfromoperationmode“条码识读设备Barcodereadingequipment条码识读器的分类Barcodereaderclassification条码扫描设备从原理上可分为光笔、CCD、激光和拍摄四类条码扫描器。Inprinciple,barcodescanningequipmentcanbedividedintolightpen,CCD,laserandshootingfourbarcodescanner.物流信息技术—条码识读设备Logisticsinformationtechnology-barcodereadingequipment(3)按识读码制的能力来分类(3)Accordingtotheabilitytoreadthecodesystemtoclassify“条码识读设备Barcodereadingequipment条码识读器的分类Barcodereaderclassification条码扫描设备从扫描方向上可分为单向和全向条码扫描器。其中全向条码扫描器又分为平台式和悬挂式。Barcodescanningequipmentcanbedividedintounidirectionalandomnidirectionalbarcodescannerfromthescanningdirection.Omnidirectionalbarcodescannerisdividedintoplatformandsuspension.物流信息技术—条码识读设备Logisticsinformationtechnology-barcodereadingequipment4)从扫描方向来分(4)Fromthescanningdirection常用的条码识读设备主要有：CCD扫描器、激光手持式扫描器和全向激光扫描器三种。Commonlyusedbarcodereadingequipmentismainly:CCDscanner,laserhandheldscannerandomnidirectionallaserscannerthree.“条码识读设备Barcodereadingequipment物流信息技术—条码识读设备Logisticsinformationtechnology-barcodereadingequipment1．激光枪1.Thelasergun激光扫描器的扫描方式有单线扫描、光栅式扫描和全角度扫描三种方式。Thescanningmodeoflaserscannerincludessinglelinescanning,rasterscanningandfullAnglescanning.“条码识读设备Barcodereadingequipment物流信息技术—条码识读设备Logisticsinformationtechnology-barcodereadingequipment2．CCD扫描器2.CCDscanner这种扫描器主要采用了CCD(ChargeCoupledDevice)-电荷耦合装置。CCD元件是一种电子自动扫描的光电转换器，也叫CCD图像感应器。它可以代替移动光束的扫描运动机构，不需要增加任何运动机构，便可以实现对条码符号的自动扫描。ThisscannermainlyadoptsCCD(ChargeCoupledDevice)-ChargecouplingDevice.CCDelementisanelectronicautomaticscanningphotoelectricconverter,alsoknownasCCDimagesensor.Itcanreplacethescanningmotionmechanismofmovingbeam,andcanrealizeautomaticscanningofbarcodesymbolswithoutaddinganymotionmechanism.“条码识读设备Barcodereadingequipment物流信息技术—条码识读设备Logisticsinformationtechnology-barcodereadingequipment2．CCD扫描器2.CCDscanner一种是手持式CCD扫描器，另一种是固定式CCD扫描器。这两种扫描器均属于非接触式，只是形状和操作方式不同，其扫描机理和主要元器件完全相同。OneisahandheldCCDscanner,andtheotherisastationaryCCDscanner.Thesetwokindsofscannersarenon-contact,buttheshapeandoperationmodeisdifferent,itsscanningmechanismandthemaincomponentsarecompletelythesame.⑴CCD扫描器的两种类型⑴TwotypesofCCDscanner“条码识读设备Barcodereadingequipment物流信息技术—条码识读设备Logisticsinformationtechnology-barcodereadingequipment2．CCD扫描器2.CCDscanner由于CCD的成像原理类似于照相机，如果要加大景深，则相应的要加大透镜，从而使CCD体积过大，不便操作。优秀的CCD应无须紧贴条码即可识读，而且体积适中，操作舒适。⑵选择CCD扫描器的两个参数(2)SelecttwoparametersoftheCCDscanner①景深。①thedepthoffield.BecauseCCDimagingprincipleissimilartoacamera,ifyouwanttoincreasethedepthoffield,thecorrespondingtoincreasethelens,sothattheVOLUMEofCCDistoolarge,inconvenientoperation.ExcellentCCDshouldnotbeclosetothebarcodecanberead,andmoderatevolume,comfortableoperation.“条码识读设备Barcodereadingequipment物流信息技术—条码识读设备Logisticsinformationtechnology-barcodereadingequipment2．CCD扫描器2.CCDscanner如果要提高CCD分辨率，必须增加成像处光敏元件的单位元素。低价CCD一般是512像素(pixel)，识读EAN、UPC等商品条码已经足够，对于别的码制识读就会困难一些。中档CCD以1024pixel为多，有些甚至达到2048pixe1，能分辨最窄单位元素为0.1mm的条码。⑵选择CCD扫描器的两个参数(2)SelecttwoparametersoftheCCDscanner②分辨率。②resolutionIfwewanttoimprovetheresolutionofCCD,wemustincreasetheunitelementofthephotosensitiveelementintheimagingarea.LowcostCCDisgenerally512pixels(pixel),readEAN,UPCandothercommoditybarcodeisenough,forothercodesystemreadingwillbemoredifficult.Themid-rangeCCDhasmorethan1024pixels,andsomeevenreach2048pixe1,whichcandistinguishthebarcodewiththenarrowestunitelementof0.1mm.光笔和大多数的卡槽条码阅读器都是采用手动扫描的方式。手动扫描器比较简单，扫描器内部不带有扫描装置，发射的照明光束的位置相对于扫描器固定，完成扫描过程需要手持扫描器扫过的条码符号。这种扫描器属于光束扫描器Lightpenandmostcardslotbarcodereadersaremanualscanning.Manualscannerisrelativelysimple.Thereisnoscanningdeviceinsidethescanner.Thepositionoftheemittedlightingbeamisfixedrelativetothescanner.Thisscannerbelongstoabeamscanner“条码识读设备Barcodereadingequipment物流信息技术—条码识读设备Logisticsinformationtechnology-barcodereadingequipment3．光笔与卡槽式3.Ligh