郑州轻工业学院 自动化08-1
AD: MOV R0，#00H ；读取A/D转换结果 MOVX A,@R0
MOV A,#0 ；启动下一次A/D转换
MOVX @R0，A
MOV DPTR,#TAB2 ；指向电压-心电数据表
MOVC A,@A+DPTR ；查看心电数值 MOV B,#64H ；取得百位BCD码 DIV AB
MOV DPTR,#TAB1
MOVC A,@A+DPTR ；查对应的七段码 MOV 32H,A ；七段码存入百位显示区 MOV A,B ；取得十 个位BCD码 MOV B,#0AH DIV AB
MOVC A,@A+DPTR ；取得十位七段码 MOV 31H,A
MOV A,B ；取得个位七段码 MOVC A,@A+DPTR MOV 30H,A RETI
TAB1:七段码表 TAB2:电压心电数表
第四章 系统原理图
16
郑州轻工业学院 自动化08-1
+5V1 BT?BATTERYR6 C1R110KΩR41MΩ7R324.8K3BT?BATTERYGNDC4+5V0.25uF75154.6M+5V161uFR72-OP0732C510uF4.6M-5V-GNDGND-5V425带通滤波电路GND2R51MΩAD705J+GND3前置放大电路-5V+5V75+5VR10144.6KC6VIN22uFR11144.6KC7+5V22uFVOUT3216OP07-P2.24R182KP2.1R192K4R130.5K99-5VC844uFR1272.4K+5VR149.5KR161MR15100KVCCafegdbcdpfeVCCagdbcdpfe9主放大电路50HZ陷波电路abcdefgdpabcdefgdp12345678-5VGNDP0GNDDSD412345678U?A2Q58*470ΩP1.0P1.1P1.2P1.3P1.4P1.5P1.6模拟量输入262728123453U?IN-0IN-1IN-2IN-3IN-4EOCIN-5IN-6IN-7ALE16ADD-AADD-BADD-Cmsb2-12-22-32-42-52-62-7lsb2-8212019188151417725242322P2.796101GND347813141718111U?D0D1D2D3D4D5D6D7OELE74LS373ALEQ0Q1Q2Q3Q4Q5Q6Q72A5B6C912151619CLKCDQ674LS74+5vC9CAPR1710K11.0592HZWRC1030PGND+5V12ref(-)ref(+)ADC0809ENABLESTARTCLOCKINT0GNDRD1GNDC1130PGND1234567891011121314151617181920P1.0VccP1.1P0.0P1.2P0.1AT89S51P1.3P0.2P1.4P0.3MOSI/P1.5P0.4MISO/P1.6P0.5SCK/P1.7P0.6RSTP0.7RXD/P3.0EA/VppTXD/P3.1ALE/PROGINT0/P3.2PSENINT1/P3.3P2.7T0/P3.4P2.6T1/P3.5P2.5WR/P3.6P2.4RD/P3.7P2.3XTAL2P2.2XTAL1P2.1VssP2.040393837363534333231+5V30292827262524232221
117
12345678- 1uF810K100KR224.8K+6OP07-5VP2.0R202KVCCagdbcdpabcdefgdpAD62063+R00.26K4C2 C31R8R97+