酒精测试仪程序 - - Powered by Discuz!

标题: 酒精测试仪程序 [打印本页]

作者: 1592281111 时间: 2017-11-27 20:54
标题: 酒精测试仪程序
我现在有原理图，实物已经按照原理图接线，程序现在有问题，望各位大神指教
#include "reg52.H"
#include <STC89c52.h>
#include <L1602.h>
#include <2402.h>

#define uchar unsigned char
#define uint  unsigned int

//声明常量
#define ALCH    80    //醉驾标准80mg/L
//K_MG_MV和K_ZERO为传感器校准系数，要根据每个MQ-3模块校准
#define K_MG_MV 160/66  //传感器灵敏度系数，每毫克/L对应的10毫伏数
#define K_ZERO    15    //传感器零点漂移，约130mV

//定义按键
sbit Key_Up = P3^6;
sbit Key_Down = P3^7;

//定义LED报警灯
sbit Led_Warn1 = P2^0;
sbit Led_Warn2 = P2^1;
sbit Led_Warn3 = P2^2;

//定义乙醇传感器TTL电平输出引脚
sbit DOUT = P1^4;

//定义标识
volatile bit FlagStartAL = 0;  //开始转换标志
volatile bit FlagKeyPress = 0; //有键弹起标志

//全局变量定义
uchar Threshold;             //酒精浓度上限报警值
uint  ALCounter;             //酒精转换计时器
long ALValue;                //酒精测量值
float ALtemp;                   //计算临时变量

uint keyvalue, keyUp, keyDown; //键值
char * pSave;                //EEPROM存盘用指针

//函数声明
void Data_Init();
void Timer0_Init();
void Port_Init();
void ADC_Init();
uchar GetADVal();
void KeyProcess(uint );

//数据初始化
void Data_Init()
{
ALCounter = 0;
ALValue = 0;
Led_Warn1 = 1;
Led_Warn2 = 2;
Led_Warn3 = 3;
keyvalue = 0;
keyUp = 1;
keyDown = 1;
}

//定时器0初始化，中断时间约2毫秒
//计算：晶振11.0592MHz，定时器时钟11059200/12=921600，每毫秒922个脉冲
//    16位定时器初值65536-1844=63692=0xf8cc
void Timer0_Init()
{
ET0 = 1;       //允许定时器0中断
TMOD = 1;    //定时器工作方式选择
TL0 = 0xcc;    //
TH0 = 0xf8;    //定时器赋予初值，大约为2毫秒中断1次
TR0 = 1;       //启动定时器
}

//定时器0中断
void Timer0_ISR (void) interrupt 1 using 0
{
TL0 = 0xcc;
TH0 = 0xf8;    //定时器赋予初值

//每1秒钟启动一次AD转换
ALCounter ++;
if (ALCounter >= 500)
{
   FlagStartAL = 1;
   ALCounter = 0;
}
}

//存入设定值

void Save_Setting()
{
pSave =  (char *)&Threshold;    //地址低位对应低8位，高位对应高8位
wrteeprom(0, *pSave);       //存醉酒阈值低8位
DELAY(300);
pSave ++;
wrteeprom(1, *pSave);       //存醉酒阈值高8位
DELAY(300);
}

//载入设定值
void Load_Setting()
{
pSave =  (char *)&Threshold;
*pSave++ = rdeeprom(0);
*pSave = rdeeprom(1);
if ((Threshold>=255)||(Threshold<0)) Threshold = 80;
}

//按键处理程序，参数为键值，1为Up键，2为Down键
void KeyProcess(uint num)
{
switch (num)
{
   case 1:
      if (Threshold<255) Threshold++;
      break;
   case 2:
      if (Threshold>1) Threshold--;
      break;
   default:
      break;
}
L1602_int(2,9,Threshold);
Save_Setting();
}

void main()
{
uint i,j;

EA = 0;
Data_Init();    //数据初始化
Timer0_Init(); //定时器0初始化
Port_Init();    //端口初始化
ADC_Init();    //ADC初始化
EA = 1;
L1602_init();
L1602_string(1,1,"Welcome to ALCT! ");
L1602_string(2,1,"Designed by AAA  ");
//延时
for (i=0;i<1000;i++)
   for (j=0;j<1000;j++)
      {;}
//清屏
L1602_string(1,1,"             ");
L1602_string(2,1,"             ");
L1602_string(1,1,"Alcohol: mg/L");
L1602_string(2,1,"Thresho: mg/L");
//载入设定值
Load_Setting();
L1602_int(2,9,Threshold);
while(1)
{
   //如果FlagStartAL标志置位，则进行AD转换
   if (FlagStartAL == 1)
   {
      //酒精浓度换算，50mg/L=62.5ppm，传感器灵敏度应事先校准
      ALValue = 500 * GetADVal() / 256;       //8位ADC，首先得到电压值，单位10毫伏
      ALValue = ALValue - K_ZERO;             //首先减去零点漂移，一般是130mV
   if (ALValue < 0) ALValue = 0;
   ALValue = ALValue * K_MG_MV;          //将mV转变成mg/L，K_MG_MV系数需要校准
      L1602_int(1,9,ALValue);
   if (ALValue > Threshold) Led_Warn1 = 0;  //超过阈值，则 Led_Warn1灯报警，否则报警灯灭。
   else Led_Warn1 = 1;
   FlagStartAL = 0;
   }
   //查询乙醇传感器TTL电平，该指示灯为传感器模块报警
   if (DOUT == 0)  Led_Warn2 = 0;
   //键盘查询，在弹起时响应
   if ((Key_Up)&&(keyUp==0)) {FlagKeyPress = 1; keyvalue = 1;}
   else if ((Key_Down)&&(keyDown==0)) {FlagKeyPress = 1; keyvalue = 2;}
   if (FlagKeyPress == 1)
   {
      KeyProcess(keyvalue);
      FlagKeyPress = 0;
   }
   if (!Key_Up) keyUp = 0;
   else keyUp = 1;
   if (!Key_Down) keyDown = 0;
   else keyDown = 1;
   DELAY(100);
}
}

$0DCJ[BSD`$$))DS{NRNUVR.png (161.41 KB, 下载次数: 62)

原理图

作者: 055441 时间: 2019-4-26 17:30
看不懂

作者: kaixin999 时间: 2019-4-28 20:03
感谢分享

作者: 老顽固 时间: 2020-12-12 23:46
wrteeprom这个报错了

作者: 湖南 时间: 2020-12-30 17:02
是显示问题吗

作者: 君子之胶淡如水 时间: 2024-5-18 20:06
ALValue = 500 * GetADVal() / 256; //8位ADC，首先得到电压值，单位10毫伏

这个500和256有什么说法

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