温室大棚智能控制系统

ID:625382 · 发表于 2020-7-18 02:20

#include <reg52.h>
#include <intrins.h>
#define uint unsigned int
#define uchar unsigned char

/*======LCD位定义==========*/
sbit RS=P2^6;
sbit RW=P2^5;
sbit E=P2^7;
sfr LCDData=0x80;
/*按键定位*/
sbit set = P1^4;//调时按键移位
sbit jia = P1^5;//加一按键
sbit jian  = P1^6;//减一按键
sbit back  = P1^7;//退出调时按键
/*蜂鸣器定位*/
sbit BEEP = P2^0;
/*热释电红外检测定位*/
sbit HW_check = P2^1;
/*指示灯定位*/
sbit LED_ZG  = P3^2;  //遮光指示灯
sbit LED_BG  = P3^3;  //补光指示灯
sbit LED_ZL  = P3^4;  //制冷指示灯
sbit LED_JR  = P3^5;  //加热指示灯
sbit LED_ZS  = P3^6;  //增湿指示灯
sbit LED_GZ  = P3^7;  //干燥指示灯
/*光照强度检测，AD转换芯片引脚定位*/
unsigned char Read_ADC0832(unsigned char Ch);
sbit ADC0832_CS =P1^0;    //将CS位定义为P2.5引脚
sbit ADC0832_CLK=P1^1;    //将CLK位定义为P2.6引脚
sbit ADC0832_DIO=P1^2;    //将DIO位定义为P2.7引脚
uchar AD_Value=0;
uchar result,result0;/*存放测试结果*/
uchar count;
bit flash;    //刷新频率参数
sbit TRH = P2^2; //温湿度传感器DHT11数据接入
uchar TH_data,TL_data,TH,TL,RH_data,RH_data0,RL_data,CK_data;
uchar TH_temp,TL_temp,RH_temp,RL_temp,CK_temp;
uchar com_data,untemp,temp;
uchar respond;
uchar T_SETDOWN,T_SETTOP,R_SETDOWN,R_SETTOP,L_SETDOWN, L_SETTOP;//温湿度光照强度最大最小值
/***液晶驱动******/
void Delay(uint i)
{while(i--);}
// 毫秒级延时子程序
/*********************************************************************************/
void delay_ms(unsigned char ms)
{
unsigned char i;
while(ms--)
{
for(i = 0; i< 150; i++)
{
_nop_();
_nop_();
_nop_();
_nop_();
}
}
}

/****************************************************************************/
//收发信号检测，数据读取
/****************************************************************************/
//5us级延时程序
/*********************************************************************************/
void delay_5us()
{
uchar i;
i--;
i--;
i--;
i--;
i--;
i--;
}
char receive()
{
uchar i;
com_data=0;
for(i=0;i<=7;i++)
{
respond=2;
while((!TRH)&&respond++);
delay_5us();
delay_5us();
delay_5us();
if(TRH)
{
temp=1;
respond=2;
while((TRH)&&respond++);
}
else
temp=0;
com_data<<=1;
com_data|=temp;
}
return(com_data);
}
/**********温湿度检测程序*********/
//温度高8位== TL_data，温度低8位== TH_data，湿度高8位== RH_data，湿度低8位== RH_data，校验 8位 == CK_data
void read_TRH()
{
//主机拉低18ms
TRH=0;
delay_ms(18);
TRH=1;
//DATA总线由上拉电阻拉高主机延时20us
delay_5us();
delay_5us();
delay_5us();
delay_5us();
//delay_us();
//delay_us();delay_us();delay_us();delay_us();
//主机设为输入判断从机响应信号
TRH=1;
//判断DHT11是否有低电平响应信号如不响应则跳出，响应则向下运行
if(!TRH)
{
respond=2;                      //判断DHT11发出 80us 的低电平响应信号是否结束
while((!TRH)&& respond++);
respond=2;                      //判断从机是否发出 80us 的高电平，如发出则进入数据接收状态
while(TRH && respond++);          //数据接收状态
RH_temp = receive();
RL_temp = receive();
TH_temp = receive();
TL_temp = receive();
CK_temp = receive();
TRH=1;                            //数据校验
untemp=(RH_temp+RL_temp+TH_temp+TL_temp);
if(untemp==CK_temp)
{
RH_data = RH_temp; //湿度整数部分
// RL_data = RL_temp; //湿度小数部分
TH_data = TH_temp;      //温度整数部分
// TL_data = TL_temp; //温度小数部分
CK_data = CK_temp;
}
}
}
/*********************************************************************************/
void Write_Instruction(uchar x)
{
Delay(1000);
E=0;
RW=0;
RS=0;
LCDData=x;
E=1;
Delay(20);
E=0;
}
void Write_Data(uchar x)
{
Delay(1000);
E=0;
RW=0;
RS=1;
E=1;
LCDData=x;
E=0;
}
void InitLCD(void)
{
Write_Instruction(0x38);
Delay(200);
Write_Instruction(0x0e);
Delay(200);
Write_Instruction(0x06);
Delay(200);
}
void Write_String(uchar x,uchar *p)
{ Write_Instruction(x);
while(*p!=0x00)
{ Write_Data(*p);
   p++;
   if (x++==0x8f)
      { Write_Instruction(0xc0);}
}
}
void Write_t(uchar i,uchar k)//数据写入
{
  Write_Instruction(i);
  Write_Data(k|0x30);
}
void Write_d(uchar i,uchar k)//℃写入
{
Write_Instruction(i);
  Write_Data(k);

}
/****************************************************************************/
/****数据显示*****/
void Display( uchar y,uchar x )
{
Write_t(y+0,(x/10)|0x30);
Write_t(y+1,(x%10)|0x30);
}
/****按键检测*****/
void key_test( )
{
   uchar place,num,number,x;
   place=0x8b;
   number = R_SETDOWN;
   num = 1;
   x=1;
while(num!=0)
{
if(set==0)
{
   delay_ms(5);
   if(set==0)
   {
   x++;
   if(x>6)x=1;
   while(!set);
   switch(x)
   {
   case 1:{
   Write_Instruction(0x01);//清屏
Write_String(0x80,"R:");
Write_String(0xc0,"T:");
Write_String(0x84,"%R");
Write_d(0xc4,0xdf); //显示℃
Write_String(0xc5,"C");
Write_String(0x87,"SET:");
Write_String(0xc7,"SET:");
Write_String(0x8d,"-");
Write_String(0xcd,"-");
Display(0x8b,R_SETDOWN);
Display(0x8e,R_SETTOP);
Display(0xcb,T_SETDOWN);
Display(0xce,T_SETTOP);
Display(0x82,RH_data);
Display(0xc2,TH_data);
   place=0x8b; number = R_SETDOWN;

   break; }
   case 2:{ place=0x8e; number = R_SETTOP; break; }
   case 3:{ place=0xcb; number = T_SETDOWN; break; }
   case 4:{ place=0xce; number = T_SETTOP; break; }
   case 5:{
   Write_Instruction(0x01);//清屏
Write_String(0x80,"L:");
Write_String(0x84,"Lx");
Write_String(0x87,"SET:");
Display(0x8b,L_SETDOWN);
Write_String(0x8d,"-");
Display(0x8e,L_SETTOP);
Display(0x82,result);
      place=0x8b; number = L_SETDOWN;
   break; }
   case 6:{ place=0x8e; number = L_SETTOP; break; }
   default:{ break;    }
   }
   }
   }
   Write_Instruction( place+1 );
   if(jia==0||jian==0)
{
if(jia==0)
{
delay_ms(5);
if(jia==0)
{
while(!jia);
     number++;
if(number>99)number=0;
Display(place,number);
}
   }
if(jian==0)
{
delay_ms(5);
if(jian==0)
{
while(!jian);
if(number==0)
{
number=99;
goto ap;
}
number--;
ap: Display(place,number);
}
   }
   switch(x)
   {
   case 1:{ R_SETDOWN = number; break; }
   case 2:{ R_SETTOP  = number; break; }
   case 3:{ T_SETDOWN = number; break; }
   case 4:{ T_SETTOP  = number; break; }
   case 5:{ L_SETDOWN = number; break; }
   case 6:{ L_SETTOP  = number; break; }
   default: break;

   }
}

if(back==0)
{
delay_ms(5);
   if(back==0)
   {
   num=0;
   while(!back);
   TR1=1;

   }
   }
}
}
/**********************AD转换**********************************************
* 名称 : dRead_ADC0832()
* 功能 : 将模拟信号转换成数字信号
* 输入 : Ch-通道选择
* 输出 : dat-转换值
*********************************************************************/
unsigned char Read_ADC0832(unsigned char Ch)
{
unsigned char i,dat; //定义变量
ADC0832_CS=1; //一个转换周期开始
ADC0832_CLK=0;  //为第一个脉冲作准备
ADC0832_CS=0;  //CS置0，片选有效

ADC0832_DIO=1; //DIO置1，规定的起始信号
ADC0832_CLK=1; //第一个脉冲
ADC0832_CLK=0; //第一个脉冲的下降沿，此前DIO必须是高电平
ADC0832_DIO=1; //DIO置1，通道选择信号
ADC0832_CLK=1; //第二个脉冲，第2、3个脉冲下沉之前，DI必须跟别输入两位数据用于选择通道，这里选通道CH0
ADC0832_CLK=0; //第二个脉冲下降沿
ADC0832_DIO=Ch; //DI置0，选择通道0
ADC0832_CLK=1; //第三个脉冲
ADC0832_CLK=0; //第三个脉冲下降沿
ADC0832_DIO=1; //第三个脉冲下沉之后，输入端DIO失去作用，应置1
ADC0832_CLK=1; //第四个脉冲
for(i=0;i<8;i++)  //高位在前
{
ADC0832_CLK=1;       //第四个脉冲
ADC0832_CLK=0;
dat<<=1;    //将下面储存的低位数据向右移
dat|=(unsigned char)ADC0832_DIO;    //将输出数据DIO通过或运算储存在dat最低位
}
ADC0832_CS=1;       //片选无效
return dat;    //将读书的数据返回
}
/****初始化子函数*****/
void init() //通过定时器模拟PWM输出程序，控制电机的转速
{
TMOD=0x10; //设置单片机定时器工作方式
EA=1;       //打开单片机总中断
ET1=1;                   //定时器T1中断允许
count=0;
TH1=(65536-43863)/256; //定时器T1的高8位设置初值，每50ms产生一次中断
TL1=(65536-43863)%256; //定时器T1的低8位设置初值，每50ms产生一次中断
TR1=0;                   //关闭定时器T1

// 。
}
/****************************************************************************/
//主函数
//TH,TL,RH,RL分别代表温湿度的整数和小数部分

void main()
{
uchar n;
BEEP=0;
R_SETDOWN = 40;
R_SETTOP  = 70;
T_SETDOWN = 20;
T_SETTOP  = 40;
L_SETDOWN=5;
L_SETTOP=40;
InitLCD();    //液晶初始化
init();    //定时器初始化
Write_Instruction(0x0c);  //关光标
TR1=1;

while(1)
{
if(HW_check==0) { BEEP=1; }  //热释电红外未检测到人体信号
else { BEEP=0; } //热释电红外检测到人体信号

if(count==0)
{
if(flash==0)    //第一屏显示湿度、温度
{
Write_Instruction(0x01);    //清屏
Write_String(0x80,"R:");
Write_String(0xc0,"T:");
Write_String(0x84,"%R");
Write_d(0xc4,0xdf);    //显示℃
Write_String(0xc5,"C");

Write_String(0x87,"SET:");
Write_String(0xc7,"SET:");

Write_String(0x8d,"-");
Write_String(0xcd,"-");

Display(0x8b,R_SETDOWN);    //显示湿度下限
Display(0x8e,R_SETTOP); //显示湿度上限
Display(0xcb,T_SETDOWN);    //显示温度下限
Display(0xce,T_SETTOP);    //显示温度上限
read_TRH();             //启动温湿度传感器检测
   }
else      //第二屏显示光照强度
{
Write_Instruction(0x01); //清屏
Write_String(0x80,"L:");
Write_String(0x84,"Lx");
Write_String(0x87,"SET:");
Display(0x8b,L_SETDOWN);    //显示光照强度下限
Write_String(0x8d,"-");
Display(0x8e,L_SETTOP);    //显示光照强度上限
}
TR1=1;
}

      RH_data=RH_data; //获取湿度
if( RH_data<=R_SETDOWN ) {    LED_ZS=0; LED_GZ=1;}       //湿度低，增湿启动
else if( RH_data>=R_SETTOP ){ LED_ZS=1; LED_GZ=0;} //湿度高，干燥启动
else  { LED_ZS=1; LED_GZ=1; } //湿度合适，停止增湿，停止干燥

      TH_data=TH_data; //获取温度
if( TH_data<=T_SETDOWN ) {    LED_JR=0; LED_ZL=1;}       //温度低，加热启动
else if( TH_data>=T_SETTOP ){ LED_JR=1; LED_ZL=0;} //温度高，制冷启动
else  { LED_JR=1; LED_ZL=1; } //温度合适，停止加热，停止制冷

for(n=1;n<7;n++)
{
AD_Value = Read_ADC0832(0); //获取光照强度
result0=(uchar)(((float)AD_Value+5)*50/251);
result=result+result0;
}
result=result/6;
if(result<=38)result=38-result;
else result=0;
if( result<=L_SETDOWN) {    LED_BG=0;LED_ZG=1; }          //光照强度值低，启动照明补光
else if(result>=L_SETTOP) { LED_BG=1;LED_ZG=0;}
else {LED_BG=1;LED_ZG=1;}

if(flash==0)
{
Display(0x82,RH_data);    //显示湿度
Display(0xc2,TH_data);    //显示温度
}
else
{
Display(0x82,result);    //显示光照强度
}
if(jia==0)       //在轮流显示模式，按【加】按键可以保持显示模式，按多一次取消保持显示模式
   {
   delay_ms(5);
   if(jia==0)
   {
      while(!jia);
   TR1=~TR1;
   }
   }
if(set==0)
   {
   delay_ms(5);
   if(set==0)
   {
      while(!set);
      Write_Instruction(0x0f);  //开光标
      TR1=0;
      Write_Instruction(0x01);//清屏
Write_String(0x80,"R:");
Write_String(0xc0,"T:");
Write_String(0x84,"%R");
Write_d(0xc4,0xdf); //显示℃
Write_String(0xc5,"C");
Write_String(0x87,"SET:");
Write_String(0xc7,"SET:");
Write_String(0x8d,"-");
Write_String(0xcd,"-");
Display(0x8b,R_SETDOWN);
Display(0x8e,R_SETTOP);
Display(0xcb,T_SETDOWN);
Display(0xce,T_SETTOP);
Display(0x82,RH_data);
Display(0xc2,TH_data);
      key_test();
      Write_Instruction(0x0c);  //关光标

   }
   }
}
}
/*******************************************************
函数功能：定时器T1的中断服务函数
********************************************************/
void Time1() interrupt 3 using 2 //定时器T1的中断编号为3，使用第2组工作寄存器
  {
      count++;       //T1每中断1次，count加1
   if(count==50)    //若累计满20次，即计满1秒钟
   {
   count=0;
flash=~flash;
TR1=0;
   }
TH1=(65536-43863)/256;          //定时器T1高8位赋初值
TL1=(65536-43863)%256;          //定时器T1低8位赋初值
}

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