描述
目前市場上的光電比色計(jì)一般都是通過RS232串口與計(jì)算機(jī)通信,隨著計(jì)算機(jī)技術(shù)的發(fā)展,這種接口實(shí)現(xiàn)已經(jīng)無法滿足PC與外部設(shè)備之間不斷提高的速度以及穩(wěn)定性、易用性等要求,給用戶使用帶來了諸多不便。USB接口技術(shù)憑借其易用、穩(wěn)定、可擴(kuò)展等優(yōu)點(diǎn),越來越廣泛應(yīng)用于PC機(jī)外設(shè)和便攜式系統(tǒng)中,為滿足客戶要求,本文設(shè)計(jì)了一種基于USB接口的比色計(jì)儀器。該儀器可以實(shí)現(xiàn)USB主機(jī)和從機(jī)兩種功能,做主機(jī)時,能實(shí)現(xiàn)數(shù)據(jù)的快速采集及U盤存儲;做從機(jī)時,能實(shí)現(xiàn)與計(jì)算機(jī)相連。
1.CH375簡介
CH375是一種USB總線的通用接口芯片,支持USB-HOST主機(jī)方式和USB-DEVICE/SLAVE設(shè)備方式,兼容USB2.0,支持USB的控制傳輸、批量傳輸、中斷傳輸,能自動檢測USB設(shè)備的連接與斷開,能提供設(shè)備連接和斷開的事件通知。在本地端,CH375具有8位數(shù)據(jù)總線和讀、寫、片選控制線以及中斷輸出,可以方便地掛接到DSP/MCU/MPU等控制器系統(tǒng)總線上。USB主機(jī)方式支持常用的USB全速設(shè)備,外部單片機(jī)可以通過CH375按照相應(yīng)的協(xié)議與USB設(shè)備通訊。CH375支持5V和3.3V電源電壓和低功耗模式。
2.雙模式USB接口硬件電路設(shè)計(jì)
2.1USB主從動態(tài)切換電路的設(shè)計(jì)
為了實(shí)現(xiàn)設(shè)備應(yīng)用的靈活性,本文設(shè)計(jì)的比色計(jì)儀器采用USB總線供電和外接電池供電兩種方式。在默認(rèn)方式下,儀器采用外接電池供電,作為USB主機(jī)使用,通過讀寫U盤,實(shí)現(xiàn)數(shù)據(jù)傳輸。在USB總線供電方式下,儀器作為USB設(shè)備使用,直接與計(jì)算機(jī)連接
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主營:世界知名品牌的PLC、DCS系統(tǒng)備件模塊
①Allen-Bradley(美國AB)系列產(chǎn)品》
②Schneider(施耐德電氣)系列產(chǎn)品》
③General electric(通用電氣)系列產(chǎn)品》
④Westinghouse(美國西屋)系列產(chǎn)品》
⑤SIEMENS(西門子系列產(chǎn)品)》
⑥銷售ABB Robots.FANUC Robots、YASKAWA Robots、KUKA Robots、Mitsubishi Robots、OTC Robots、PanasonicRobots、MOTOMAN Robots。
⑦estinghouse(西屋):OVATION系統(tǒng)、WDPF系統(tǒng)、MAX1000系統(tǒng)備件。
⑧Invensys Foxboro(??怂共_):I/A Series系統(tǒng),F(xiàn)BM(現(xiàn)場輸入/輸出模塊)
順序控制、梯形邏輯控制、事故追憶處理、數(shù)模轉(zhuǎn)換、輸入/輸出信號處理、數(shù)
據(jù)通信及處理等。Invensys Triconex:冗余容錯控制系統(tǒng)、基于三重模件冗余(TMR)
結(jié)構(gòu)的zui現(xiàn)代化的容錯控制器。
⑨Siemens(西門子):Siemens MOORE,Siemens Simatic C1,Siemens數(shù)控系統(tǒng)等。
⑩Bosch Rexroth(博世力士樂):Indramat,I/O模塊,PLC控制器,驅(qū)動模塊等。
◆Motorola(摩托羅拉):MVME 162、MVME 167、MVME1772、MVME177等系列。
A-B PLC_1
ALLEN BRADLEY CATALOG 1300-1746
Please Use CTRL and F to Search for a Part Number
MFR.
PART NUMBER
DESCRIPTION
ALLEN BRADLEY
1326-CPAB100
100’POWER CABLE,ABA AND ABB M,
ALLEN BRADLEY
1332-AAA
1 HP,230V DRIVE
ALLEN BRADLEY
1333-AAAB
1HP,230V DRIVE
ALLEN BRADLEY
1333-BAAB
3HP,230V DRIVE
ALLEN BRADLEY
1333-YAAB
2HP,230V DRIVE
ALLEN BRADLEY
1334-MOD-G2
DIGITAL THUMBWHEEL
ALLEN BRADLEY
1336-MOD-E1
HENDHELD TERMINAL
ALLEN BRADLEY
1388-AV20
20 AMP CONTROLLER
ALLEN BRADLEY
1388
TO50DR ALLEN BRADLEY 1388-AV60 60 AMP 150V DC CONTROLLER
ALLEN BRADLEY
1494V-RB2
ALLEN BRADLEY
1720-L004
4 INPUT AND CARD
1745
ALLEN BRADLEY
1745-C1
REPLACEMENT CABLE
ALLEN BRADLEY
1745-C2
SLC 100 REPLACEMENT CABLE
ALLEN BRADLEY
1745-C3
CABLE,A-B
ALLEN BRADLEY
1745-E101
SER B SLC-100 EXPARSION UNIT
ALLEN BRADLEY
1745-E103
SLC-100EXP.UNIT,10-30V AC/DC SINKING INPUT
ALLEN BRADLEY
1745-E104
SLC-100EXP.UNIT,10-30V AC/DC SINKING INPUT
ALLEN BRADLEY
1745-E105
EXP.UNIT RELAY OUTPUT
ALLEN BRADLEY
1745-E151
SER.B SLC-150 EXPARSION
ALLEN BRADLEY
1745-E152
EXP.UNIT,10-30 VDC SINKING INPUT
ALLEN BRADLEY
1745-E153
EXP.UNIT,10-30 VDC SINKING INPUT
ALLEN BRADLEY
1745-E155
EXP.UNIT,10-30 VDC SINKING INPUT
ALLEN BRADLEY
1745-LP101
85-132VAC SINKING INPUT,6 RELAY OUTPUT
ALLEN BRADLEY
1745-LP102
170-265VAC SINKING INPUT,6 RELAY OUTPUT
ALLEN BRADLEY
1745-LP103
10-30V AC/DC SINK INPUT 6 RELAY OUTPUT
ALLEN BRADLEY
1745-LP104
10-30V AC/DC SINK IN,6 RELAY OUT 10-30VDC
ALLEN BRADLEY
1745-LP151
85-132VAC SINK IN,10 TRIAC&2 RELAY OUT
ALLEN BRADLEY
1745-LP153
10-30VDC SINK OUT,12 RELAY OUT,AC PWR,
ALLEN BRADLEY
1745-LP154
10-30 VDC SINK IN,10 TRANS&2 RELAY OUT,18-30 VDC PWR,
ALLEN BRADLEY
1745-LP156
10-30VDC SOURCING IN,12 RELAY OUT AC PWR
ALLEN BRADLEY
1745-LP157
PROCESSOR MODULE SLC150
ALLEN BRADLEY
1745-M1
EEPROM MEMORY MODULE
ALLEN BRADLEY
1745-PCC
PERSONAL COMPUTER INTERFACE CONVERTER,
ALLEN BRADLEY
1745-PCK
INTERFACE KIT
ALLEN BRADLEY
1745-PCP
POWER SUPPLY
ALLEN BRADLEY
1745-PT1
POCKET PROGRAMMER&CABLE
ALLEN BRADLEY
1745-R1
REPLACEMENT RELAY BOARD
ALLEN BRADLEY
1745-R2
REPLACEMENT RELAY BOARD
ALLEN BRADLEY
1745-R3
REPLACEMENT RELAY BOARD
ALLEN BRADLEY
1745-TCAT
TIMER COUNTER ACCESS TERMINAL
1746
ALLEN BRADLEY
1746-A10
10 SLOT CHASSIS-MOD HDWR STYLE
ALLEN BRADLEY
1746-A13
13 SLOT RACK MOD HDWR STYLE
ALLEN BRADLEY
1746-A2
2 SLOT CHASSIS,MOD HDWR STYLE
ALLEN BRADLEY
1746-A4
4 SLOT CHASSIS,MOD HDWR STYLE
ALLEN BRADLEY
1746-A7
7 SLOT CHASSIS,MOD HDWR STYLE
ALLEN BRADLEY
1746-BAS
BASIC MODULE FOR PROGRAMMABLE CONTROLLER
ALLEN BRADLEY
1746-BAS-T
BASIC MODULE FOR PROGRAMMABLE CONTROLLER
ALLEN BRADLEY
1746-BLM
BLOW MOLDING MODULE
ALLEN BRADLEY
1746-BTM
BARREL TEMPERATURE MODULE
ALLEN BRADLEY
1746-C16
CHASSIS INTERCONNECT CABLE
ALLEN BRADLEY
1746-C7
6-INCH RACK INTERCONNECT CABLE
ALLEN BRADLEY
1746-C9
36″RACK INTERCONNECT CABLE
ALLEN BRADLEY
1746-FI041
ANALOG INPUT MODULE CURRENT OR VOLTAGE SELECTABLE
ALLEN BRADLEY
1746-FI04V
/O MODULE W/2 FAST ANALOG IN 2 ANALOG VOLTAGE OUT
ALLEN BRADLEY
1746-HCA
CABLE
ALLEN BRADLEY
1746-HCDOC
CABLE
ALLEN BRADLEY
1746-HHDOC
CABLE
ALLEN BRADLEY
1746-HHTOVR
CABLE
ALLEN BRADLEY
1746-HS
MOTION CONTROL MODULE IMC110
ALLEN BRADLEY
1746-HSCE
HIGH SPEED COUNTER ENCODER FOR PROGRAMMABLE CTRLR
ALLEN BRADLEY
1746-HSCE2
MULTI CHANNEL HIGH SPEED COUNTER MODULE
ALLEN BRADLEY
1746-HSRV
AXIS CONTROL
ALLEN BRADLEY
1746-HSTP1
AXIS CONTROL SINGLE AXIS
ALLEN BRADLEY
1746-HT
TERMINAL PANEL
ALLEN BRADLEY
1746-IA16
AC INPUT MODULE(16)INPUT-100-120V
ALLEN BRADLEY
1746-IA4
AC INPUT MODULE(4)INPUT
ALLEN BRADLEY
1746-IA8
AC INPUT MODULE(8)INPUT-100/120V
ALLEN BRADLEY
1746-IB16
DC INPUT MODULE(16)INPUT,SINK 24V
ALLEN BRADLEY
1746-IB32
DC INPUT MODULE(32)INPUT,SINK 24V
ALLEN BRADLEY
1746-IB8
DC INPUT MODULE(8)INPUT,SINK 24V
ALLEN BRADLEY
1746-IC16
30-60 VDC INPUT 16PTS
ALLEN BRADLEY
1746-IG16
DC INPUT MODULE(16)INPUT(TTL)(SOURCE)
ALLEN BRADLEY
1746-IH16
90-146 VDC ISOLATED INPUT 16PTS
ALLEN BRADLEY
1746-IM16
159-265 VAC ISOLATED INPUT
ALLEN BRADLEY
1746-IM4
AC INPUT MODULE
ALLEN BRADLEY
1746-IM8
AC INPUT MODULE
ALLEN BRADLEY
1746-IN16
INPUT MODULE(16)INPUT 24V AC/DC
ALLEN BRADLEY
1746-INT4
AC INPUT MODULE
ALLEN BRADLEY
1746-IO12
COMBO MOD(6)IN 10/120V AC&(6)OUT RELAY
ALLEN BRADLEY
1746-IO12DC
COMBO MOD(6)IN 10/120V AC&(6)OUT RELAY
ALLEN BRADLEY
1746-IO4
COMBO MOD(6)IN 10/120V AC&(6)OUT RELAY
ALLEN BRADLEY
1746-IO8
COMBO MOD(6)IN 10/120V AC&(6)OUT RELAY
ALLEN BRADLEY
1746-ITB16
FAST RESPONSE DC SINKING INPUT CARD
ALLEN BRADLEY
1746-ITV16
FAST RESPONSE DC SINKING INPUT CARD
ALLEN BRADLEY
1746-IV16
INPUT MODULE(16)INPUT 24V AC/DC
ALLEN BRADLEY
1746-IV32
DC INPUT MODULE(32)INPUTS SOURCE 24 V DC
ALLEN BRADLEY
1746-IV8
DC INPUT MODULE(32)INPUTS SOURCE 24 V DC
ALLEN BRADLEY
1746-MPM