51HX711+單片機10kg電子秤源程序+上線報警設置（加繼電器）

ID:224412 · 發表于 2018-5-1 11:00

電子秤的制作，能夠去皮，范圍10KG

單片機源程序如下:

/************************************************
功能：
按鍵K1為去皮功能，K2和K3是修改報警參數值。K2加，K3減。當所測重量大于設置的報警值時，P3.0驅動繼電器工作，繼電器可以接報警裝置等。
校正方法：如果所測重量偏小。則按住K3鍵不放，再按下K1鍵。直到顯示重量為正確重量時再放開K1和K3按鍵。
如果所測重量偏大。則按住K2鍵不放，再按下K1鍵。直到顯示重量為正確重量時再放開K1和K2按鍵。。校正系數具有斷電保存功能。
時間：2018.4.25
作者：Obligation
*************************************************/
#include "main.h"
#include "LCD1602.h"
#include "HX711.h"
#define uchar unsigned char //無符號字符型宏定義變量范圍0~255
#define uint unsigned int //無符號整型宏定義變量范圍0~65535
#include "eeprom52.h"
//定義變量
unsigned char KEY_NUM = 0; //用來存放按鍵按下的鍵值
unsigned long HX711_Buffer = 0; //用來存放HX711讀取出來的數據
unsigned long Weight_Maopi = 0; //用來存放毛皮數據
long Weight_Shiwu = 0; //用來存放實物重量
unsigned char Max_Value; //用來存放設置最大值
unsigned char state = 0; //用來存放設置狀態
unsigned char Blink_Speed = 0;
#define Blink_Speed_Max 6 //該值可以改變設置指針閃爍頻率
uint GapValue= 210; //傳感器曲率
unsigned char num1,num2,times; //num1 和 num2 是存儲在單片機eeprom內部的。
sbit JDQ=P3^0;
//報警值，單位是g
#define AlarmValue 10000
/******************把數據保存到單片機內部eeprom中******************/
void write_eeprom()
{
num1=GapValue/256;
num2=GapValue%256;
SectorErase(0x2000);
byte_write(0x2001,Max_Value);
byte_write(0x2002, num1);
byte_write(0x2003, num2);
byte_write(0x2060, a_a);
}
/******************把數據從單片機內部eeprom中讀出來*****************/
void read_eeprom()
{
Max_Value = byte_read(0x2001);
num1 = byte_read(0x2002);
num2 = byte_read(0x2003);
a_a = byte_read(0x2060);
GapValue= num1*256+num2;
}
/**************開機自檢eeprom初始化*****************/
void init_eeprom()
{
read_eeprom(); //先讀
if(a_a != 3) //新的單片機初始單片機內問eeprom
{
a_a =3;
Max_Value = 10;
GapValue= 210;
write_eeprom();
}
}
//掃描按鍵
void Scan_Key()
{
if(KEY1 == 0 && KEY2 ==1 && KEY3 ==1 )
{
Delay_ms(5);
if(KEY1 == 0 && KEY2 ==1 && KEY3 ==1 )
{
while(KEY1 == 0 && KEY2 ==1 && KEY3 ==1 );
Get_Maopi();
Buzzer_Di();
}
}
if(KEY2 == 0 && KEY1 ==1 && KEY3 ==1 )
{
Delay_ms(5);
if(KEY2 == 0 && KEY1 ==1 && KEY3 ==1 )
{
while(KEY2 == 0 && KEY1 ==1 && KEY3 ==1 );
if(Max_Value<10) { Max_Value++;}
write_eeprom(); //保存數據
Buzzer_Di();
LCD1602_write_com(0x80+0x40);
LCD1602_write_word("JDQ=");
LCD1602_write_data(Max_Value/100 + 0x30);
LCD1602_write_data(Max_Value%100/10 + 0x30);
LCD1602_write_data(Max_Value%10 + 0x30);
}
}
if(KEY3 == 0 && KEY1 ==1 && KEY2 ==1 )
{
Delay_ms(5);
if(KEY3 == 0 && KEY1 ==1 && KEY2 ==1)
{
while(KEY3 == 0 && KEY1 ==1 && KEY2 ==1);
if(Max_Value>1) { Max_Value--; }
write_eeprom(); //保存數據
Buzzer_Di();
LCD1602_write_com(0x80+0x40);
LCD1602_write_word("JDQ=");
LCD1602_write_data(Max_Value/100 + 0x30);
LCD1602_write_data(Max_Value%100/10 + 0x30);
LCD1602_write_data(Max_Value%10 + 0x30);
}
}
//=======================對實物進行重量校正================================
if( KEY1 == 0 && KEY2 ==0)
{
Delay_ms(25);
if( KEY1 == 0 && KEY2 ==0)
{
times=0;
Buzzer =0;
Delay_ms(25);
Buzzer =1;
if(GapValue<999) { GapValue++; }
write_eeprom(); //保存數據
LCD1602_write_com(0x80+0x40+11);
LCD1602_write_word("K=");
LCD1602_write_data(GapValue/100 + 0x30);
LCD1602_write_data(GapValue%100/10 + 0x30);
LCD1602_write_data(GapValue%10 + 0x30);
}
}
if(KEY1 == 0 && KEY3 ==0)
{
Delay_ms(25);
if(KEY1 == 0 && KEY3 ==0)
{
times=0;
Buzzer =0;
Delay_ms(25);
Buzzer =1;
if(GapValue>1) { GapValue--; }
write_eeprom(); //保存數據
LCD1602_write_com(0x80+0x40+11);
LCD1602_write_word("K=");
LCD1602_write_data(GapValue/100 + 0x30);
LCD1602_write_data(GapValue%100/10 + 0x30);
LCD1602_write_data(GapValue%10 + 0x30);
}
}
}
//****************************************************
//主函數
//****************************************************
void main()
{
Init_LCD1602(); //初始化LCD1602
init_eeprom(); //讀eeprom數據
LCD1602_write_com(0x80); //設置LCD1602指針
LCD1602_write_word("Welcome to use!");
Get_Maopi();
Get_Maopi();
Delay_ms(2000); //延時2s
Get_Maopi();
Get_Maopi(); //稱毛皮重量 //多次測量有利于HX711穩定
LCD1602_write_com(0x01); //清屏
LCD1602_write_com(0x80+0x40);
LCD1602_write_word("JDQ=");
LCD1602_write_data(Max_Value/100 + 0x30);
LCD1602_write_data(Max_Value%100/10 + 0x30);
LCD1602_write_data(Max_Value%10 + 0x30);
LCD1602_write_word("Kg");
Buzzer =0;
Delay_ms(25);
Buzzer =1;
while(1)
{
Scan_Key();
Get_Weight();
//顯示當前重量
LCD1602_write_com(0x80);
LCD1602_write_word("Weight=");
LCD1602_write_data(Weight_Shiwu/10000 + 0x30);
LCD1602_write_data(Weight_Shiwu%10000/1000 + 0x30);
LCD1602_write_data('.');
LCD1602_write_data(Weight_Shiwu%1000/100 + 0x30);
LCD1602_write_data(Weight_Shiwu%100/10 + 0x30);
LCD1602_write_data(Weight_Shiwu%10 + 0x30);
LCD1602_write_word("Kg");
//超限報警
if(Weight_Shiwu/1000 >= Max_Value || Weight_Shiwu >= AlarmValue) //超過設置最大值或者傳感器本身量程最大值報警
{
JDQ = 0; Buzzer=0;
}
else
{
JDQ = 1; Buzzer=1;
}
times++;
if(times>=50)
{
times=0;
LCD1602_write_com(0x80+0x40+11);
LCD1602_write_word(" ");
}
}
}
//****************************************************
//稱重
//****************************************************
void Get_Weight()
{
Weight_Shiwu = HX711_Read();
Weight_Shiwu = Weight_Shiwu - Weight_Maopi; //獲取凈重
if(Weight_Shiwu >= 0)
{
Weight_Shiwu = (unsigned long)((float)Weight_Shiwu/GapValue); //計算實物的實際重量
}
else
{
Weight_Shiwu = 0;
}
}
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