基于单片机PID恒温温度控制系统设计-毕设课设资料

Posted 2021-05-15 Mr song song

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#include<reg52.h> 
#include<intrins.h> 
#include<math.h> 
#include<string.h> 
struct PID { 
unsigned int SetPoint; // 设定目标 Desired Value 
unsigned int Proportion; // 比例常数 Proportional Const 
unsigned int Integral; // 积分常数 Integral Const 
unsigned int Derivative; // 微分常数 Derivative Const 
unsigned int LastError; // Error[-1] 
unsigned int PrevError; // Error[-2] 
unsigned int SumError; // Sums of Errors 
}; 
struct PID spid; // PID Control Structure 
unsigned int rout; // PID Response (Output) 响应输出
unsigned int rin; // PID Feedback (Input)//反馈输入
 unsigned char high_time,low_time,count=0;//占空比调节参数 
#define uchar unsigned char
#define uint unsigned int

sbit output=P1^0;
sbit ds=P3^2;
sbit DQ=P3^2;//ds18b20与单片机连接口
sbit lcden=P2^7;//LCE使能引脚
sbit lcdrs=P2^5;
sbit lcdrw=P2^6;
sbit ledred=P1^6;
sbit ledgreen=P1^7;

sbit key0=P2^0;//按键引脚 
sbit key1=P2^1;

uchar set[2]={0};