基于51單片機(jī)藍(lán)牙電子秤程序設(shè)計(jì) 包含原理圖手機(jī)APP

ID:828353 · 發(fā)表于 2022-4-18 17:48

制作出來(lái)的實(shí)物圖如下：

如圖所示

電路原理圖如下：

元件清單:

電源電路
電源DC端子 J1 1套
開(kāi)關(guān) S1 1個(gè)
指示燈 D1 1個(gè)
電阻1K R2 1個(gè)


單片機(jī)最小系統(tǒng)
IC座子40P U1 1個(gè)
單片機(jī) U1 1個(gè)
晶振11.0592M Y1 1個(gè)
獨(dú)石電容22P C1、C2 2個(gè) 元件上標(biāo)：220
按鍵 K0 、K1 2個(gè)
電解電容 C3 1個(gè)
電阻 10K R1 1個(gè)

蜂嚀器電路
蜂嚀器 B1 1個(gè)
三極管S8550 Q1 1個(gè)
電阻1K R3 1個(gè)

藍(lán)牙電路
藍(lán)牙模塊 U3 1個(gè)
4P排座       1個(gè) 插藍(lán)牙模塊

液晶電路
16P排座 LCD1 1個(gè)
液晶1602 LCD1 1個(gè)
電位器 10K W1 1個(gè) 高檔電位器

壓力傳感器電路
壓力傳感器(套裝) U2 1個(gè)
4P杜邦線       1條

主板
萬(wàn)能板 7cm*9cm 1張

單片機(jī)源程序如下:

#include "main.h"
#include "HX711.h"
#include "uart.h"
#include "LCD1602.h"
#include <intrins.h>
#define uchar unsigned char //無(wú)符號(hào)字符型宏定義變量范圍0~255
#define uint unsigned int //無(wú)符號(hào)整型宏定義變量范圍0~65535
unsigned long HX711_Buffer = 0;
unsigned long Weight_Maopi = 0;
long Weight_Shiwu = 0;
unsigned char flag = 0;
bit Flag_ERROR = 0;
sbit beep= P1^7;
#define GapValue 405
//****************************************************
//主函數(shù)
//****************************************************
void main()
{
Uart_Init();
Init_LCD1602();
LCD1602_write_com(0x80);
LCD1602_write_word("Welcome to use!");
Delay_ms(1000); //延時(shí),等待傳感器穩(wěn)定
Get_Maopi(); //稱毛皮重量
while(1)
{
EA = 0;
Get_Weight(); //稱重
EA = 1;
Scan_Key();
//顯示當(dāng)前重量
if( Flag_ERROR == 1)
{
LCD1602_write_com(0x80+0x40);
LCD1602_write_word("ERROR ");
beep=0;
}
else
{
beep=1;
Send_ASCII(0x82);
Send_ASCII(0x4);
Send_ASCII(Weight_Shiwu >> 8);
Send_ASCII(Weight_Shiwu);
LCD1602_write_com(0x80+0x40);
LCD1602_write_data(Weight_Shiwu/1000 + 0X30);
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(" g");
}
}
}
//掃描按鍵
void Scan_Key()
{
if(KEY1 == 0)
{
Delay_ms(5);
if(KEY1 == 0)
{
while(KEY1 == 0);
Get_Maopi(); //去皮
}
}
}
//****************************************************
//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 int)((float)Weight_Shiwu/GapValue); //計(jì)算實(shí)物的實(shí)際重量
if(Weight_Shiwu > 5000) //超重報(bào)警
{
Flag_ERROR = 1;
Send_ASCII(0x82);
Send_ASCII(0x4);
Send_ASCII(5000 >> 8);
}
else
{
Flag_ERROR = 0;
}
}
else
{
Weight_Shiwu = 0;
Send_ASCII(0x82);
Send_ASCII(0x4);
Send_ASCII(0 >> 8);
}
}
//****************************************************
//獲取毛皮重量
//****************************************************
void Get_Maopi()
{
Weight_Maopi = HX711_Read();
}
//****************************************************
//MS延時(shí)函數(shù)(12M晶振下測(cè)試)
//****************************************************
void Delay_ms(unsigned int n)
{
unsigned int i,j;
for(i=0;i<n;i++)
for(j=0;j<123;j++);
}