項目成品圖片：

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項目簡介

1.功能詳解

STM32礦井環(huán)境監(jiān)測系統(tǒng)

功能如下：

STM32F103C8T6單片機作為主控制器

DS18B20測量環(huán)境溫度，當溫度不在設置的上下限，則聲光報警

PM2.5傳感器測量粉塵濃度，當濃度大于設定最大值，則聲光報警，并自動噴霧

可通過按鍵設置各閾值

通過OLED顯示屏顯示測量值

通過藍牙可手機端接收數(shù)據(jù)，保存數(shù)據(jù)，手機端可遠程開關(guān)噴霧

2.材料清單

STM32F103C8T6單片機

OLED 屏幕

DS18B20溫度傳感器

粉塵傳感器

BT04A藍牙模塊

繼電器

有源蜂鳴器

加濕器

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原理圖設計

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PCB硬件設計

PCB圖

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程序設計

#include"sys.h"#include"stdio.h"#include"string.h"#include"stdlib.h"#include"math.h"#include"delay.h"#include"gpio.h"#include"key.h"#include"oled.h"#include"usart.h"#include"adc.h"#include"pm25.h"#include"ds18b20.h"

/**********************************變量定義**********************************/uint8_tkey_num =0;//按鍵掃描標志位uint8_tflag_display =0;//顯示界面標志位uint32_ttime_num =0;//10ms計時short temp_value =0;//溫度值u16 temp_max =40; //溫度最大值u16 temp_min =10;//溫度最小值u16 pm25_value =0; //粉塵值u16 pm25_max =200; //粉塵最大值_Bool flag_mode =0;//模式標志位externuint8_tusart1_buf[256];//串口1接收數(shù)組chardisplay_buf[32];//顯示緩存區(qū)/**********************************函數(shù)聲明**********************************/voidKey_function(void);//按鍵函數(shù)voidMonitor_function(void);//監(jiān)測函數(shù)voidDisplay_function(void);//顯示函數(shù)voidManage_function(void);//處理函數(shù)

/***********主函數(shù)*****/intmain(void){ NVIC_PriorityGroupConfig(NVIC_PriorityGroup_2);//配置中斷優(yōu)先分組Delay_Init(); //延時初始化 Gpio_Init(); //IO初始化Key_Init(); //按鍵初始化Oled_Init(); //OLED初始化Oled_Clear_All();//清屏Usart1_Init(9600); //串口1初始化
PM25_Init();//PM2.5初始化Adc_Init();//ADC初始化DS18B20_Init();//w溫度初始化while(1){Key_function();//按鍵函數(shù)Monitor_function();//監(jiān)測函數(shù)Display_function();//顯示函數(shù)Manage_function();//處理函數(shù)
time_num++;//計時變量+1Delay_ms(10);if(time_num %10==0)LED_SYS = ~LED_SYS;if(time_num >=5000){time_num =0;}}}
/***********按鍵函數(shù)*****/voidKey_function(void){key_num =Chiclet_Keyboard_Scan(0);//按鍵掃描if(key_num !=0)//有按鍵按下{switch(key_num){case1: //按鍵1，切換設置界面flag_display++;if(flag_display >=4)flag_display =0;
Oled_Clear_All(); //清屏break;
case2: //按鍵2switch(flag_display){case0: //界面0：
break;
case1://界面1：溫度最大值+1if(temp_max case2://界面2：溫度最小值+1if(temp_min < temp_max-1)temp_min++;break;
case3://界面3：if(pm25_max default:break;}break;
case3://按鍵3switch(flag_display){case0: //界面0：
break;
case1://界面1：溫度最大值-1if(temp_max > temp_min+1)temp_max--;break;
case2://界面2：溫度最小值-1if(temp_min >0)temp_min--;break;
case3://界面3：if(pm25_max >0)pm25_max--;break;
default:break;}break;
default:
break;}}}
/***********監(jiān)測函數(shù)*****/voidMonitor_function(void){if(flag_display ==0)//測量界面{
pm25_value =Pm25_Get_Value(3);//獲取PM2.5temp_value =DS18B20_Get_Temp();

if(time_num %30==0)//發(fā)送數(shù)據(jù){UsartPrintf(USART1,"溫度：%d.%dC\r\n",temp_value/10,temp_value%10);UsartPrintf(USART1,"粉塵：%dppm\r\n",pm25_value);}
if(USART1_WaitRecive() ==0)//如果接收到藍牙數(shù)據(jù){switch(usart1_buf[0]){case('A')://A：切換自動模式flag_mode =0;break;
case('B')://B：RELAY_JS = ~RELAY_JS;flag_mode =1;break;

default:
break;}USART1_Clear();}}}
/***********顯示函數(shù)*****/voidDisplay_function(void){switch(flag_display)//根據(jù)不同的顯示模式標志位，顯示不同的界面{case0: //界面0：Oled_ShowCHinese(1,0,"溫度：");sprintf(display_buf,"%d.%dC ",temp_value/10,temp_value%10);Oled_ShowString(1,6, display_buf);Oled_ShowCHinese(2,0,"粉塵：");sprintf(display_buf,"%dppm ",pm25_value);Oled_ShowString(2,6, display_buf);if(flag_mode ==0)//顯示模式Oled_ShowCHinese(3,0,"模式：自動");elseOled_ShowCHinese(3,0,"模式：手動");break;
case1://界面1：顯示設置溫度最大值Oled_ShowCHinese(1,0,"設置溫度最大值");if(time_num %5==0){sprintf(display_buf,"%d ",temp_max);Oled_ShowString(2,6, display_buf);}if(time_num %10==0){Oled_ShowString(2,6," ");}break;
case2://界面2：顯示設置溫度最小值Oled_ShowCHinese(1,0,"設置溫度最小值");if(time_num %5==0){sprintf(display_buf,"%d ",temp_min);Oled_ShowString(2,6, display_buf);}if(time_num %10==0){Oled_ShowString(2,6," ");}break;
case3://界面3：Oled_ShowCHinese(1,0,"設置粉塵最大值");if(time_num %5==0){sprintf(display_buf,"%d ",pm25_max);Oled_ShowString(2,7, display_buf);}if(time_num %10==0){Oled_ShowString(2,7," ");}break;
default:
break;}}
/***********處理函數(shù)*****/voidManage_function(void){if(flag_display ==0) //測量界面{if(flag_mode ==0){if(pm25_value > pm25_max || temp_value > temp_max*10|| temp_value < temp_min*10)?//聲光報警{if(time_num %?3?==?0){BEEP =~BEEP;LED =~ LED;}}else{BEEP =?0;LED =?1;}
if(pm25_value > pm25_max){RELAY_JS =1;}else{RELAY_JS =0;}}}else //設置界面{RELAY_JS =0;BEEP =0;LED =1;}}

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實驗效果