详细介绍: SCSI-BP4生物识别的工作原理是利用生物识别设备对生物特征进行取样,提取其唯一的特征并将其转化成数字代码,并进一步将这些代码组成特征模板,人们同识别设备交互进行身份认证时,识别设备获取其特征并与数据库中的特征模板进行比对,以确定是否匹配,从而决定接受或拒绝该人。而在众多的用于身份验证的生物识别技术中,指纹识别技术是目前最方便、可靠、非侵害和价格便宜的解决方案。
SCSI-BP4指纹识别技术主要涉及4个功能模块:读取指纹图像、提取特征、保存数据和比对。通过指纹读取设备读取到人体指纹的图像,然后对原始图像进行初步处理,使之更清晰,再通过指纹辨识软件建立指纹的特征数据。软件从指纹上找到被称为“节点”的数据点,即指纹纹路的分叉、终止或打圈处的坐标位置,这些点同时具有7种以上的唯一性特征。通常手指上平均具有70个节点,所以这种方法会产生大约500个数据。这些数据,通常称为模板。通过计算机模糊比较的方法。把两个指纹的模板进行比较,计算出它们的相似程度,最终得到两个指纹的匹配结果。
以太网接口电路模块
AT91SAM7X256内部集成有MAC控制器,可支持MII接口和RMII接口。RTL820lBL则是工业级带有MII接口的10/100 Mb/s低功耗以太网收发器,25 MHz时钟输出,智能降功耗模式,可为系统提供稳定可靠的优质网络解决方案,为工厂企业及其他恶劣的操作环境架设可支持实时传输的以太网,符合IEEE802.3u的技术标准。
图像传感器电路模块
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SCSI-BP4
CPU-60D/32/C3
6604E/16-200
CPCI-731
CPCI-761
IOBP-731
PMC860-40-E1-75
SCSI-BP4
IOBP-731
IOBP-10
IBC-20-1
SYS68K/PIO-1
CPCI-910
CPU-5V/64-110-2/C13
Force SYS68K CPU-30Lite
FORCE SYS68K DRAM VME BOARD MVME MAINFRAME MOTOROLA
Force SYS68K/CPU-6 880-12537-101.A2 LAM 810-17034-300-1
FORCE SYS68K SRAM-4A VME BOARD MVME MAINFRAME MOTOROLA
Force SYS68K/CPU-6VB P/N 100611 LAM reseach 17034-3-C
FORCE SYS68K ISCSI-1 VME BOARD MVME MAINFRAME MOTOROLA
FORCE COMPUTERS SYS68K CPU-6A
FORCE SYS68K CPU-2VF VME SINGLE BOARD COMPUTER MOTOROLA
FORCE SYS68K CPU-30BE/16 VME BOARD
Force SYS68K/SIO-2 P/N 310004
Force SYS68K CPU-33B/4 VME Board
Force SYS68K/SASI-1
FORCE CONTROL BOARD SYS68K ISI0-2/C2 (P/N 220062)
FORCE COMPUTER MODEL SYS68K SASI-1441 LAM REV A
FORCE COMPUTER CPU BOARD SYS68K CPU-1B NEW-NO BOX
Force SYS68K CPU30ZBE CPU-30ZBE CPU Module VMEbus VME
FORCE SYS68K CPU BOARD 310004 WORKING
Force SYS68K/CPU-33B/4 VME Board CAT#: 510098
FORCE COMPUTERS SYS68K/CPU-6VA USPP SYS68KCPU6VA CIRCUIT CARD
BUS TRONIC FORCE SYS68K MAINFRAME BOARDS NICE LOT
Force SYS68K/ISIO-2 I/O Controller Board PN: 310031
Force SYS68K ISIO-1 Serial I/O Board
BioRad SYS68K CPU-30ZBE FORCE 25MHZ VME CPU BOARD
FORCE COMPUTER VME BOARD MODEL SYS68K REV C
FORCE SYS68K ISIO-2 MODULE ASSY
Force SYS68K/ISIO-1FP I/O Controller Dual Board 310034
Force SYS68K/CPU-33B/4 VME Board CAT#: 510098 PN: 600-1
Force SYS68K/CPU-30BE SYS68K/CPU-30BE/16/C2 VME Module
Force SYS68K/CPU-33B/4 VME Board CAT#: 510098
Force SYS68K/ISIO-1FP I/O Controller Dual Board w Cable
BAUMER THALHEIM ITD 27 A 4 Y20 ENCODER ITD27A4Y20 NIB
GE FANUC IC600BF832K INPUT MODULE 115VAC 25 MA/PT MAX IC600-BF832K REPAIRED
POWERTRON 103-13 ISOL/FLD SUPPLY UNIT
BEI MOTION SYSTEMS H25D-SS-1000-ABZC-8830-LED-EM1?8 ENCODER P/N: 924-01002-2480
FANUC A16B-2203-0291/?02A ETHERNET PC BOARD A16B-2203-0291
VALMET A413200 PC BOARD W/ AIU 8 SIMUL.
ALLEN BRADLEY 1791-IOBW 64 POINT 24VDC DISTRIBUTED I/O MODULE 1791IOBW
RELIANCE ELECTRIC 0-51444 DRIVER BOARD
MTS TEMPOSONICS LDT POSITION SENSING SYSTEMS
NIB IFM EFECTOR LK7022 LEVEL SENSOR LK0264A-A-00KQPKG\US
BRAD HARRISON 409P606-35 MPIS CABLE 409P60635 NEW
NIB GE FANUC IC693CPU313P BASE 5-SLOT WITH CPU 10MHZ
FANUC A860-2000-X011 ENCODER A8602000X011
SMC RS1H63TN-30BM-R STOPPER CYLINDER RS1H63TN30BMR NEW
VICKERS KXCG6 W160 3 Z MU H1 10 VALVE W/ KCG3L160DZMU..
SIEMENS 6SE6440-2UD15-5AA1 DRIVE 6SE64402UD155AA1
IPE CHESTON 31035-225 RELAY BOARD W/RELAYS 31035225
CLEVELAND-KIDDER M846-01449-004 UPB-1 LOAD CELL 250LBS
TEMPOSONICS 0110060703202000 ANALOG OUTPUT MODULE
FANUC A20B-1003-0090/02 PC BOARD DRIVE CONTROL AC SERVO A20B-1003-0090/02/07B
MODICON AS-M84A-002 CPU MODULE ASM84A002
DYNACORP 304294-28 CLUTCH-BRAKE 30429428
PILZ PNOZ-XM1 SAFETY RELAY IDEN. NO. 774600, PNOZ XM1 24 VDC 4N/O 1N/C 2SO
NIB AMETEK 831TG0100BLS MODEL 831 ELECTRONIC PRESSURE TRANSMITTER
ISSC 300-LC3A LOGIC BOARD 300LC3A REPAIRED
NIB NAMCO EE210-38780 PXSW,ROTCYL,DC,?SI/SO, 10-30V, PLG,NO,PROBE 2.062
NEW BOSCH REXROTH 9810231276
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