Yokogawa FU20-03-T1-NPT 串行通信作為一種重要的通信技術已經在PC機通信及工業現場控制在線檢測等領域得到了廣泛的應用［1］。本文所設計的車載信息采集系統是包含數據采集，數據傳輸和數據顯示的結構系統，是對一款新型電動汽車的車載信息進行采集，傳送和顯示的設計過程：車載信息通過傳感器（模擬量形式）或開關量形式被采到從單片機，主單片機和從單片機之間通過串行通信進行數據傳輸，并由主機將數據送往液晶面板顯示出來。
2 總線型主從式多機系統
綜合考慮了電動汽車所涉及到的大量的車載信息和串行口的多機通信能力，該設計采用了總線型主從式多機通信模式，而進行數據傳輸的標準總線選為最普通實用的RS-485。總線型主從式多機通信系統模式如下圖：
而串口的通信協議在這里就不作介紹了。
3 車載信息采集系統硬件設計
該系統所研究的對象為一款電動汽車的車載信息，筆者把信息分為兩類：模擬量和開關量。模擬量包括：電池組（蓄電池）溫度，電池組（蓄電池）電壓，電池組（蓄電池）容量，車速（里程），總電流等；開關量是指各種操作狀態，包括：燈（系列）的狀態，檔位開關量，剎車狀態，限位開關狀態等。
本文所設計的車載信息采集系統硬件框架如下圖：
模擬量通過特定傳感器采樣，轉換成電壓信號進入從機的A/D通道，從機做A/D轉換后將數據存儲下來；開關量通過繼電器將電平信號送至從機的I/O口，從機也對信號做相關處理。主機與從機之間通過串行通信進行數據傳輸，并由主機將合理數據送往LCD顯示。
Yokogawa FU20-03-T1-NPT IC697ALG324 IC697ALG440 IC697ALG441
IC697ALG444 IC697ALG445 IC697BEM711
IC697BEM713 IC697BEM721 IC697BEM731
IC697BEM733 IC697BEM741 IC697BEM761
IC697CBL700 IC697CBL709 IC697CBL803
IC697CBL811 IC697CBL826 IC697CGR772
IC697CGR935 IC697CMM711
IC697CMM712 IC697CMM741 IC697CMM742
IC697CPM790 IC697CPU731 IC697CPU780
IC697CPU788 IC697CPU789 IC697CPX772
IC697CPX782 IC697CPX928 IC697CPX935
IC697CSE784 IC697CSE925 IC697GDH701
IC697GDS701 IC697HSC700 IC697LBR701
IC697MCS704 IC697MDL240 IC697MDL241
IC697MDL250 IC697MDL251 IC697MDL252
IC697MDL253 IC697MDL254 IC697MDL340
IC697MDL341 IC697MDL350 IC697MDL640
IC697MDL651 IC697MDL652 IC697MDL653
IC697MDL654 IC697MDL671 IC697MDL740
IC697MDL750 IC697MDL752 IC697MDL753
IC697MDL940 IC697MEM713 IC697MEM715
IC697MEM717 IC697MEM719 IC697MEM731
IC697MEM732 IC697MEM733 IC697MEM735
IC697MLX000 IC697MSC800 IC697MSC801
IC697MSC802 IC697PCM711 IC697PWR710
IC697PWR711 IC697PWR720 IC697PWR724
IC697PWR748 IC697RCM711 IC698ACC701 IC698ACC720
IC698ACC735 IC698CHS009 IC698CHS017
IC698CHS109 IC698CHS117 IC698CHS217
Yokogawa FU20-03-T1-NPT Sti Beamsafe II BS2R24 Receiver Camera
Kito Corporation 1 Ton Hoist ES3B 3592
ABB E-31712 Paint Teach Pendant Programming Unit
SOLA / Hevi-Duty SDN 10-24-100P Power Supply 24VDC
SOLA / Hevi-Duty SDN 20-24-480C Power Supply 24VDC
Allen Bradley 150-A05NB SMC-2 Smart Motor Control
Allen Bradley 2760SFC1 Memory Module 2760-SFC1
SEALED Allen Bradley 1756-0F4 Analog Output Module
Sti Beamsafe II BS2R24 Receiver Camera
Sti Beamsafe II BS2X24 Transmitter Camera
Leeson 174921.00 Micro Series AC Motor Control 2 HP
20 Amp Square D Circuit Breaker FA34020 I LINE
SEALED Allen Bradley 1756-0B16E Digital Output Card
Allen Bradley 1791-16BC DC Block I/O Module Ser. B
Allen Bradley PanelView Plus 1250 2711P-T12C4D1
100 Amp Square D Circuit Breaker FA34100 I LINE
AC Tech M1450BH MC Series AC Motor Control 5 HP
100 Amp Square D Circuit Breaker FHL2600M4200
Allen Bradley PanelView Plus 1250 2711P-T12C4D1
90 Amp Square D Circuit Breaker FC34090 I-Line
Allen Bradley 837-A3A Temperature Controller
Industrial Devices D2501B Cylinder Control Board
Kito Corporation 1 Ton Hoist ES3B 2500
Allen Bradley 2711P-T7C6D1 PanelView Plus 700
400 Amp Square D Molded Case Circuit Breaker LHP36400MT
400 Amp Square D Molded Case Circuit Breaker LHP36400MT
70 Amp Square D Circuit Breaker FC34070 I-Line
Allen Bradley 592-COV169 Overload Relay 592COV169
Allen Bradley 2711-K3A17L1 PanelView 300
Allen Bradley 1794-TB3 Terminal Base Module
NCC T1K-600-461 Solid State Timer 6-600 seconds
SEALED Allen Bradley 840-A7 Automatic Float Switch
Allen Bradley 2711P-T12C4D1 PanelView Plus 1250
20 Amp Square D Circuit Breaker FA34020 I LINE
Allen Bradley 800T-2TAG Pushbutton Station Start / Stop
100 Amp Square D Circuit Breaker FA34100 I LINE
Wilkerson LRP-96-702 Air Lubricator Bowl
Allen Bradley 400-DP25NJ3 Definite Purpose Contactor
Danaher Controls Dynapar HR62510240A06 Encoder
Pepperl + Fuchs FE-MLS8C Photoelectric Sensor
60 Amp Square D Molded Case Circuit Breaker FA 34060
Allen Bradley 400-DP25NJ2 Definite Purpose Contact
Allen Bradley 1734D-IB8X0B8E 24VDC I/O Module DNET
30 Amp Square D Molded Case Circuit Breaker FA 36030
15 Amp Square D Molded Case Circuit Breaker FA 36015
Acme Electric DR1-2405 Switch Mode Power Supply
ABB Baumer 5692435L Feedback Unit PLSR 2XM0 / K10
Allen Bradley 1761-L32AAA MicroLogix 1000 Module
Upright 20N Scissors Lift Manlift 20' 750# cap.
40 Amp Square D Circuit Breaker FA34040 I LINE
Allen Bradley 1761-L32AAA MicroLogix 1000 Module
20 Amp Square D Circuit Breaker FA24020 AB I LINE
100 Amp Square D Molded Case Circuit Breaker IF 34100
15 Amp Square D Circuit Breaker 989715
15 Amp Square D Circuit Breaker 989715
50 Amp Square D Molded Case Circuit Breaker FA 36050
Allen Bradley 836T-T252JX145X?9 Pressure Control
15 Amp Square D Circuit Breaker 989715
Allen Bradley 1791DS-IB8XOB8 CompactBlock Guard I/O
Allen Bradley 2711P-T7C6D1 PanelView Plus 700
400 Amp Square D Molded Case Circuit Breaker LA 36400
Allen Bradley 1791-32A0 32pt Input Module 179132A0
SEALED Siemens SITOP 6EP1436-3BA00 Power Supply 24V
Allen Bradley 1791-16AC B AC Block I/O Module
225 Amp Westinghouse Molded Case Circuit Breaker J3200
225 Amp Westinghouse Molded Case Circuit Breaker J3200
225 Amp Westinghouse Molded Case Circuit Breaker J3200
Allen Bradley 1791-0A32 B AC Block Output Module
15 Amp Square D Circuit Breaker 999315
Sola SLS-24-024T 24V Linear Power Supply
Sola SLS-12-017T 12V Linear Power Supply
IDEC Izumi Corp PS5R-SG24 240W Power Supply 24VDC
15 Amp Square D Circuit Breaker 999315
15 Amp Square D Circuit Breaker 989715
Giddings & Lewis M.1300.7372 Input Remote I/O Module
800 Amp Square D Molded Case Circuit Breaker MEC 836LI
800 Amp Square D Molded Case Circuit Breaker MH 36800
Pacific Scientific 6445-001-K-N Servo Control
30 Amp Siemens ITE Molded Case Circuit Breaker EH3B030
15 Amp Square D Circuit Breaker 989715
30 Amp Square D NEMA Size 1 Combination Starter 8536
Hardening Model DU1020I 2200 Degrees MIFCO
800 Amp Square D Molded Case Circuit Breaker MEC 836LI
30 Amp Square D NEMA Size 1 Combination Starter 8536
30 Amp Square D NEMA Size 1 Combination Starter 8536
Square D Econo Flex Adjustable Speed Drive Controller
Xycom VME XVME-977 Hard / Floppy Drive Module
Xycom VME XVME-977 Hard / Floppy Drive Module
Allen Bradley PLC SLC 500 1747 L511 CPU Processor Unit
Allen Bradley PLC SLC 500 1747 L511 CPU Processor Unit
Allen Bradley PLC SLC 500 1747 L511 CPU Processor Unit
Accu-Sort Adaptascan 2755-SN5 Bar Code Scanner Unit
60 Amp GE TED 134060 TED134060 Circuit Breaker
60 Amp GE TED 134060 TED134060 Circuit Breaker
400 Amp Square D Circuit Breaker LAF 36400 32MVI027
60 Amp GE TED 134060 TED134060 Circuit Breaker
250 Amp Square D Circuit Breaker Mag Gard L3625032M1027
Square D Device Net Module DNM Com Adapter 52046 344 53
Schneider Automation TSX Momentum 170 LNT 710 00
250 Amp GE Spectra RMS Molded Case Circuit Breaker
30 Amp GE TED 134030 TED134030 Circuit Breaker
Ekonogage Model A Pin Gauge Set 028 to .502
30 Amp Square D Circuit Breaker FAL 34030 FAL34030
15 Amp Square D Circuit Breaker 989715
20 Amp ITE EE1-H020 Circuit Breaker EE1H020
Turck FDN20-16XSG DeviceNet Bus Stop Module
20 Amp ITE EE1-H020 Circuit Breaker EE1H020
SEALED Allen Bradley 1494F-JN30 Non-Fusible Disconnect
20 Amp ITE EE1-H020 Circuit Breaker EE1H020
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