基于51單片機(jī)的光電電機(jī)測(cè)量轉(zhuǎn)速系統(tǒng)(代碼+仿真+文檔)

ID:316613 · 發(fā)表于 2023-12-12 18:53

仿真原理圖如下（proteus仿真工程文件可到本帖附件中下載）

單片機(jī)源程序如下:

#include <REG52.H>
#define uchar unsigned char
#define uint unsigned int
#define ulong unsigned long
#define LED_DAT P1
sbit LED_SEG0 = P2^4;
sbit LED_SEG1 = P2^5;
sbit LED_SEG2 = P2^6;
sbit LED_SEG3 = P2^7;
sbit led22= P3^7;
//sbit pin_SpeedSenser = P3^5; //光電傳感器信號(hào)接在T1上
#define TIME_CYLC 100 //12M晶振，定時(shí)器10ms 中斷一次我們1秒計(jì)算一次轉(zhuǎn)速 // 1000ms/10ms = 100
#define PLUS_PER 10 //碼盤的齒數(shù) ，這里假定碼盤上有10個(gè)齒，即傳感器檢測(cè)到10個(gè)脈沖，認(rèn)為1圈
#define K 100.0 //校準(zhǔn)系數(shù)
unsigned char code table[]=
{0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f};
uchar data Disbuf[4];// 顯示緩沖區(qū)
uint Tcounter = 0; //時(shí)間計(jì)數(shù)器
bit Flag_Fresh = 0; // 刷新標(biāo)志
bit Flag_clac = 0; //計(jì)算轉(zhuǎn)速標(biāo)志
bit Flag_Err = 0; //超量程標(biāo)志
//在數(shù)碼管上顯示一個(gè)四位數(shù)
void DisplayFresh();
//計(jì)算轉(zhuǎn)速，并把結(jié)果放入數(shù)碼管緩沖區(qū)
void ClacSpeed();
//初始化定時(shí)器T0
void init_timer0();
//初始化定時(shí)器T1
void init_timer1();
//延時(shí)函數(shù)
void Delay(uint ms);
void it_timer0() interrupt 1 /* interrupt address is 0x000b */
{
TF0 = 0; //d定時(shí)器 T0用于數(shù)碼管的動(dòng)態(tài)刷新
//
TH0 = 0xC0; /* init values */
TL0 = 0x00;
Flag_Fresh = 1;
Tcounter++;
if(Tcounter>TIME_CYLC)
{ Flag_clac = 1;//周期到，該重新計(jì)算轉(zhuǎn)速了
}
}
void it_timer1() interrupt 3 /* interrupt address is 0x001b */
{
TF1 = 0; //定時(shí)器T1用于單位時(shí)間內(nèi)收到的脈沖數(shù)
//要速度不是很快，T1永遠(yuǎn)不會(huì)益處
Flag_Err = 1; //如果速度很高，我們應(yīng)考慮另外一種測(cè)速方法，：脈沖寬度算轉(zhuǎn)速
}
void main(void)
{
Disbuf[0] = 0; //開(kāi)機(jī)時(shí)，初始化為0000
Disbuf[1] = 0;
Disbuf[2] = 0;
Disbuf[3] = 0;
init_timer0();
init_timer1();
while(1)
{
if(Flag_Fresh)
{ Flag_Fresh = 0;
DisplayFresh(); // 定時(shí)刷新數(shù)碼管顯示
}
if(Flag_clac)
{ Flag_clac = 0;
ClacSpeed(); //計(jì)算轉(zhuǎn)速，并把結(jié)果放入數(shù)碼管緩沖區(qū)
Tcounter = 0;//周期定時(shí) 清零
TH1=TL1 = 0x00;//脈沖計(jì)數(shù)清零
}
if(Flag_Err) //超量程處理
{
//數(shù)碼管顯示字母'EEEE'
Disbuf[0] = 0x9e; //開(kāi)機(jī)時(shí)，初始化為0000
Disbuf[1] = 0x9e;
Disbuf[2] = 0x9e;
Disbuf[3] = 0x9e;
while(1)
{ DisplayFresh();//不再測(cè)速等待復(fù)位i
}
}
}
}
//在數(shù)碼管上顯示一個(gè)四位數(shù)
void DisplayFresh()
{
P2 |= 0xF0;
LED_SEG0 = 0;
LED_DAT = table[Disbuf[0]];
Delay(1);
P2 |= 0xF0;
LED_SEG1 = 0;
LED_DAT = table[Disbuf[1]];
Delay(1);
P2 |= 0xF0;
LED_SEG2 = 0;
LED_DAT = table[Disbuf[2]];
Delay(1);
P2 |= 0xF0;
LED_SEG3 = 0;
LED_DAT = table[Disbuf[3]];
Delay(1);
P2 |= 0xF0;
}
//計(jì)算轉(zhuǎn)速，并把結(jié)果放入數(shù)碼管緩沖區(qū)
void ClacSpeed()
{
uint speed ;
uint PlusCounter;
PlusCounter = TH1*256 + TL1;
speed = K*(PlusCounter/PLUS_PER)/60;//K是校準(zhǔn)系數(shù)，如速度不準(zhǔn)，調(diào)節(jié)K的大小
Disbuf[0] = (speed/1000)%10;
Disbuf[1] = (speed/100)%10;
Disbuf[2] = (speed/10)%10;
Disbuf[3] = speed%10;
if(speed>=30)
{
led22=1;
}
else led22=0;
}
//初始化定時(shí)器T0
void init_timer0()
{
TMOD &= 0xf0; //定時(shí)10毫秒 /* Timer 0 mode 1 with software gate */
TMOD |= 0x01; /* GATE0=0; C/T0#=0; M10=0; M00=1; */
TH0 = 0xC0; /* init values */
TL0 = 0x00;
ET0=1; /* enable timer0 interrupt */
EA=1; /* enable interrupts */
TR0=1; /* timer0 run */
}
//延時(shí)函數(shù)
void Delay(uint ms)
{
uchar i;
while(ms--)
for(i=0;i<100;i++);
}
//初始化定時(shí)器T1
void init_timer1()
{
TMOD &= 0x0F; /* Counter 1 mode 1 with software gate */
TMOD |= 0x50; /* GATE0=0; C/T0#=1; M10=0; M00=1; */
TH1 = 0x00; /* init values */
TL1 = 0x00;
ET1=1; /* enable timer1 interrupt */
EA=1; /* enable interrupts */
TR1=1; /* timer1 run */
}

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