模拟病房呼叫系统Word下载.docx
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LED电源跳线
2针
10k复位电阻
单独按键
双排针
2×
18针
MAX232外围电容
4
复位电容
电源指示灯电阻1k
LED限流电阻
电源指示灯
数码管锁存器74HC573
数码管
蜂鸣器
PNP三极管
电阻1k
10
89C52RC芯片
硬件连接电路图如下图所示:
四、使用说明
接上USB接口后,按下电源按键,数码管就开始计时,显示时间,从左到右依次显示时、分、秒;
当需要调整时间时,按下键时分秒调整键可以进行对时、分、秒的设定;
当有病人呼叫时,数码管就会显示数量和床号,并伴有蜂鸣器响,直到按下应答键后,数码管又重新显示时间,蜂鸣器停止响声。
五、流程图设计
六、程序设计如下
LEDBufEQU60H;
显示缓冲
LEDBuf1EQU80H
HourEQU40H
MinuteEQU41H
SecondEQU42H
C100usEQU43H
chuanggaoEQU70h
chuangdiEQU71H
shuliangEQU72H
TickEQU10000
T100usEQU256-100
ORG0000H
LJMPMAIN
ORG0003H
LJMPMT
ORG000BH
LJMPTOINT
ORG0013H
LJMPHT
ORG001BH
LJMPT1INT
MAIN:
MOVTMOD,#22h;
模式2,定时器0.1毫秒中断一次
MOVTH0,#T100us
MOVTL0,#T100us
MOVTL1,#6H
MOVTH1,#6H
MOVIE,#10001010b;
EA=1,IT0=1
MOVHour,#0
MOVvMinute,#0
MOVSecond,#0
MOVC100us,#high(Tick)
MOVC100us+1,#low(Tick)
SETBIT0
SETBIT1
SETBEX0
SETBEX1
SETBIE0
SETBIE1
MOVMinute,#0
MOVHour,#0
SETBTR0
MOVp0,#0h
SETBp0.7
LJMPMLoop
MT:
MOVSecond,#;
分调整
INCMinute
MOVA,Minute
CJNEA,#60,LOP1
MOVMinute,#0
LOP1:
RETI
HT:
MOVSecond,#0;
时调整
INCHour
MOVA,Hour
CJNEA,#24,lop2
MOVHour,#0
lop2:
MLoop:
MOVA,Hour
MOVB,#10
DIVAB
CALLToLED
MOVLEDBuf+5,A
MOVA,B
MOVLEDBuf+4,A
MOVA,Minute
MOVLEDBuf+3,A
MOVA,B
ORLa,#01h
MOVLEDBuf+2,A
MOVA,Second
MOVLEDBuf+1,A
MOVLEDBuf,A
CALLDisplayLED
MOVR1,#73h
MOVR3,#0
JBP0.0,tiao1
k1:
JBP0.1,tiao2
k3:
JBP0.2,tiao3
k4:
JBP0.3,tiao4
k5:
JBP0.4,tiao5
k6:
JBP0.5,tiao6
k7:
JBP0.6,tiao7
k2:
JBP0,xian
LJMPMLoop
tiao1:
SETBTR1
SETBF0
INCR3
MOV30H,R3
MOV@R1,#1
INCR1
SJMPk1
tiao2:
SETBTR1
MOV@R1,#2
INCR1
SJMPk3
tiao3:
MOV@R1,#3
SJMPk4
tiao4:
SETBF0
INCR3
MOV30h,R3
MOV@R1,#4
SJMPk5
tiao5:
MOV30h,R3
MOV@R1,#5
SJMPk6
tiao6:
MOV@R1,#6
SJMPk7
tiao7:
MOV30H,R3
MOV@R1,#7
SJMPk2
xian:
CLRF0
MOVA,chuanggao
MOVLEDBuf+4,A
MOVA,chuangdi
CALLToLED
ORLA,#80H
MOVA,shuliang
MOVLEDBuf+1,A
JNBP3.0,lp1
CJNER3,#0,xian
LJMPxun
lp1:
CLRTR1;
关振铃器返回显示时间
LJMPmloop
xun:
MOVR3,30H;
重新置初值
MOVA,R1
ADDA,30H
MOVR1,A
LJMPxian
T1INT:
CPLP0.7;
定时器1中断程序
RETI
TOINT:
PUSHPSW
PUSHACC
MOVA,C100us+1
JNZGoon
DECC100us
Goon:
DECC100us+1
MOVA,C100us
ORLA,C100us+1
JNZExit
DECR1
DECR3
MOVchuanggao,#0
MOVchuangdi,@R1
MOVshuliang,30H
INCSecond
CJNEA,#60,Exit
INCMinute
MOVMinute,#0
INCHour
CJNEA,#24,Exit
Exit:
POPACC
POPPSW
RETI
Delay:
;
延时子程序
MOVR7,#0
DelayLoop:
DJNZR7,DelayLoop
DJNZR6,DelayLoop
RET
LEDMAP:
八段管显示码
DB3fh,06h,5bh,4fh,66h,6dh,7dh,07h
DB7fh,6fh,77h,7ch,39h,5eh,79h,71h
DisplayLED:
MOVR0,#LEDBuf
MOVR5,#6;
共6个八段管
MOVR2,#01111111b;
从左边开始显
Loop:
SETBP2.1
MOVP1,#0H;
关所有八段管
MOVA,@R0
CLRP2.1
SETBP2.0
MOVP1,A
CLRP2.0
MOVA,R2
MOVP1,A;
显示一位八段管
MOVR6,#1
CALLDelay
MOVA,R2;
显示下一位
RRA
MOVR2,A
INCR0
DJNZR5,Loop
ToLED:
MOVDPTR,#LEDMap
MOVCA,@A+DPTRr
END
七、心得体会
课程设计是培养学生综合运用所学知识,发现、提出、分析和解决实际问题,锻炼实践能力的重要环节,是对学生实际工作能力的具体训练和考察过程。
随着科学技术发展的日新日异,单片机已经成为当今计算机应用中空前活跃的领域,在生活中可以说得是无处不在。
因此作为电气工程专业的学生来说掌握单片机的开发技术