基于stm32的心血管健康监测系统的设计

几何驱动的图像颜色编辑方法与应用摘要黄俊翔.便携式动态心电、血氧监护仪研制[D].桂林电子科技大学,2022.DOI:10.27049/ki.ggldc.2022.000643.张琥石,庞庆良,黄代政等.基于STM32的物联网多体征参数监护系统[J].现代电子技术,2023,46(08):79-83.DOI:10.16652/j.issn.1004-373x.2023.08.015.李瑾慧,潘涛,徐奕鸿等.基于脉搏波描记法的血氧饱和度实时监测[J].信息技术与信息化,2022,(11):78-81.赵阳光,信艺阳,张艳等.基于STM32的温室大棚环境远程监控系统设计[J].集成电路应用,2023,40(12):30-32.DOI:10.19339/j.issn.1674-2583.2023.12.011.李勇.基于单片机的医疗设备温湿度实时监测系统设计[J].电子制作,2024,32(03):94-97.DOI:10.16589/11-3571/tn.2024.03.024.申利民,翁桂鹏.基于OneNET云平台的智能粮仓监控系统设计[J].信息技术与信息化,2023,(12):185-188.田静.基于STM32的老年智能手环的设计与实现[D].南京邮电大学,2021.DOI:10.27251/ki.gnjdc.2021.000086.宋玥蓉,吴丽,袁福林等.STM32的智能宿舍烟雾检测器的设计[J].福建电脑,2023,39(10):88-92.DOI:10.16707/ki.fjpc.2023.10.018.AbeUC,MateusM,BrunoB,etal.MAX30102PhotometricBiosensorCoupledtoESP32-WebserverCapabilitiesforContinuousPointofCareOxygenSaturationandHeartrateMonitoring†[J].EngineeringProceedings,2021,16(1):9-9.AlsayaydehJAJ,YusofBFM,HalimABZM,etal.PatientHealthMonitoringSystemDevelopmentusingESP8266andArduinowithIoTPlatform[J].InternationalJournalofAdvancedComputerScienceandApplications(IJACSA),2023,14(4):29-30.MobileCommunications;ResearchersfromJaypeeInstituteofInformationTechnologyDetailFindingsinMobileCommunications(VehiclePollutionMonitoring,ControlandChallanSystemUsingMq2SensorBasedOnInternetofThings)[J].JournalofEngineering,2020,114:5-30.RohmatG,AsepA,MuhammadR.PerformanceComparisonforHearthRateSignalDetectionforDifferentLocationinFingertipandWristUsingSensorMAX30102[J].JournalofBiomimetics,BiomaterialsandBiomedicalEngineering,2023,6748:131-143.名称数量STM32单片机开发板1STM32F103RCT61MAX30102心率血氧模块1DTH11温湿度模块1DAP仿真器10.96英寸OLED屏1MQ2烟雾浓度模块1面包板1杜邦线若干ESP-01S模块1#include"blood.h"#include"usart.h"uint16_theart=0;uint16_tblood=0;uint16_tg_fft_index=0; //fft输入输出下标structcompxs1[FFT_N+16]; //FFT输入和输出：从S[1]开始存放，根据大小自己定义structcompxs2[FFT_N+16]; //FFT输入和输出：从S[1]开始存放，根据大小自己定义struct{ float Hp ; //血红蛋白 float HpO2; //氧合血红蛋白 }g_BloodWave;//血液波形数据BloodDatag_blooddata={0}; //血液数据存储#defineCORRECTED_VALUE 47 //标定血液氧气含量/*funcationstart*///血液检测信息更新voidblood_data_update(void){ //标志位被使能时读取FIFO g_fft_index=0; while(g_fft_index<FFT_N) { while(MAX30102_INTPin_Read()==0) { //读取FIFO max30102_read_fifo();//readfromMAX30102FIFO2 //将数据写入fft输入并清除输出 if(g_fft_index<FFT_N) { //将数据写入fft输入并清除输出 s1[g_fft_index].real=fifo_red; s1[g_fft_index].imag=0; s2[g_fft_index].real=fifo_ir; s2[g_fft_index].imag=0; g_fft_index++; } } }}//血液信息转换voidblood_data_translate(void){ floatn_denom; uint16_ti; //直流滤波 floatdc_red=0; floatdc_ir=0; floatac_red=0; floatac_ir=0; for(i=0;i<FFT_N;i++) { dc_red+=s1[i].real; dc_ir+=s2[i].real; } dc_red=dc_red/FFT_N; dc_ir=dc_ir/FFT_N; for(i=0;i<FFT_N;i++) { s1[i].real=s1[i].real-dc_red; s2[i].real=s2[i].real-dc_ir; } //移动平均滤波 UsartPrintf(USART_DEBUG,"8ptMovingAveragered\r\n");// for(i=1;i<FFT_N-1;i++) { n_denom=(s1[i-1].real+2*s1[i].real+s1[i+1].real); s1[i].real=n_denom/4.00; n_denom=(s2[i-1].real+2*s2[i].real+s2[i+1].real); s2[i].real=n_denom/4.00; } //八点平均滤波 for(i=0;i<FFT_N-8;i++) { n_denom=(s1[i].real+s1[i+1].real+s1[i+2].real+s1[i+3].real+s1[i+4].real+s1[i+5].real+s1[i+6].real+s1[i+7].real); s1[i].real=n_denom/8.00; n_denom=(s2[i].real+s2[i+1].real+s2[i+2].real+s2[i+3].real+s2[i+4].real+s2[i+5].real+s2[i+6].real+s2[i+7].real); s2[i].real=n_denom/8.00; UsartPrintf(USART_DEBUG,"%f\r\n",s1[i].real); } UsartPrintf(USART_DEBUG,"8ptMovingAverageir\r\n"); for(i=0;i<FFT_N;i++) {// UsartPrintf(USART_DEBUG,"%f\r\n",s2[i].real); } UsartPrintf(USART_DEBUG,"\r\n"); //开始变换显示 g_fft_index=0; //快速傅里叶变换 FFT(s1); FFT(s2); //解平方 UsartPrintf(USART_DEBUG,"开始FFT算法\r\n"); for(i=0;i<FFT_N;i++) { s1[i].real=sqrtf(s1[i].real*s1[i].real+s1[i].imag*s1[i].imag); s1[i].real=sqrtf(s2[i].real*s2[i].real+s2[i].imag*s2[i].imag); } //计算交流分量 for(i=1;i<FFT_N;i++) { ac_red+=s1[i].real; ac_ir+=s2[i].real; } for(i=0;i<FFT_N/2;i++) {// UsartPrintf(USART_DEBUG,"%f\r\n",s1[i].real); } UsartPrintf(USART_DEBUG,\r\n"); for(i=0;i<FFT_N/2;i++) {// UsartPrintf(USART_DEBUG,"%f\r\n",s2[i].real); } UsartPrintf(USART_DEBUG,"结束FFT算法\r\n");// for(i=0;i<50;i++)// {// if(s1[i].real<=10)// break;// } //UsartPrintf(USART_DEBUG,"%d\r\n",(int)i); //读取峰值点的横坐标结果的物理意义为 ints1_max_index=find_max_num_index(s1,30); ints2_max_index=find_max_num_index(s2,30); UsartPrintf(USART_DEBUG,"%d\r\n",s1_max_index); UsartPrintf(USART_DEBUG,"%d\r\n",s2_max_index); floatHeart_Rate=60.00*((100.0*s1_max_index)/512.00)+20; g_blooddata.heart=Heart_Rate; floatR=(ac_ir*dc_red)/(ac_red*dc_ir); floatsp02_num=-45.060*R*R+30.354*R+94.845; g_blooddata.SpO2=sp02_num; }voidblood_Loop(void){ USART_Cmd(USART2,DISABLE); //血液信息获取 blood_data_update(); //血液信息转换 blood_data_translate(); //显示血液状态信息 g_blooddata.SpO2=(g_blooddata.SpO2>99.99)?99.99:g_blooddata.SpO2; UsartPrintf(USART_DEBUG,"指令心率%3d",g_blooddata.heart);// OLED_ShowNum(4,7,g_blooddata.heart,3); UsartPrintf(USART_DEBUG,"指令血氧%0.2f",g_blooddata.SpO2);// OLED_ShowNum(3,4,g_blooddata.SpO2,3); heart=g_blooddata.heart; blood=(unsignedint)g_blooddata.SpO2; USART_Cmd(USART2,ENABLE);}voidDHT11_Start(void){ unsignedinttimeout; DHT11_Mode_Out_PP();//将PA7配置为输出模式 DHT11_DATA_OUT(0); //将电平拉低 Delay_us(20000); //保持低电平至少18ms DHT11_DATA_OUT(1); //将电平拉高 Delay_us(30); //保持高电平20~40us DHT11_Mode_IPU(); //DHT11的80us低电平响应信号 timeout=80; while((!GPIO_ReadInputDataBit(GPIOA,GPIO_Pin_7))&&(timeout>0)) { timeout--; Delay_us(1); } //DHT11的80us高电平响应信号 timeout=80; while(GPIO_ReadInputDataBit(GPIOA,GPIO_Pin_7)&&(timeout>0)) { timeout--; Delay_us(1); }}unsignedcharDHT11_Read_Byte(void){ unsignedinti; unsignedchardat=0; unsignedinttimeout; DHT11_Mode_IPU(); for(i=0;i<8;i++) { while(GPIO_ReadInputDataBit(GPIOA,GPIO_Pin_7)==0);//等待50us过去 Delay_us(40);//跨过40us后再去读取信号线上的电平，如果为低电平标识数据为0，如果为高电平表示数据为1 dat<<=1; if(GPIO_ReadInputDataBit(GPIOA,GPIO_Pin_7)) dat+=1; timeout=50; while(GPIO_ReadInputDataBit(GPIOA,GPIO_Pin_7)&&(timeout>0)) { timeout--; Delay_us(1); } } returndat;}voidDHT11_Read(void){ unsignedcharHum_H_temp,Hum_L_temp,Tem_H_temp,Tem_L_temp,Check_Sum; //启动DHT11 DHT11_Start(); //连续读取5个Byte，共计40bit，内含湿度8位整数位，湿度8位小数位，温度8位整数位，温度8位小数位，校验和 Hum_H_temp=DHT11_Read_Byte(); Hum_L_temp=DHT11_Read_Byte(); Tem_H_temp=DHT11_Read_Byte(); Tem_L_temp=DHT11_Read_Byte(); Check_Sum=DHT11_Read_Byte(); //发送结束标志 DHT11_Mode_Out_PP(); DHT11_DATA_OUT(1); //将电平拉高 //判断读取的40bit数据是否有效，及检查校验和是否正确 if((Hum_H_temp+Hum_L_temp+Tem_H_temp+Tem_L_temp)==Check_Sum) { Hum_H=Hum_H_temp-80; Hum_L=Hum_L_temp; Tem_H=Tem_H_temp; Tem_L=Tem_L_temp;voidADC1_Init(void){ ADC1_GPIO_Config(); ADC1_Mode_Config(); } //传感器校准函数voidMQ2_PPM_Calibration(floatRS){R0=RS/pow(CAL_PPM/613.9f,1/-2.074f);}//MQ2传感器数据处理floatMQ2_GetPPM(void){floatVrl=(float)ADC_ConvertedValue/4096*3.3;floatRS=(3.3f-Vrl)/Vrl*RL;if(Vrl>1&&floag1==0)//获取系R0{ MQ2_PPM_Calibration(RS); floag1=1;}ppm=613.9f*pow(RS/R0,-2.074f);returnppm;}#include"stm32f10x.h"//网络设备驱动#include"esp8266.h"//硬件驱动#include"delay.h"#include"usart.h"//C库#include<string.h>#include<stdio.h>#defineWIFI_SSID "X" // WIFI的名称必须用2.4G的wifi不能用5G的，且不能用中文、空格#defineWIFI_PSWD "55332211" // WIFI密码#defineSERVER_HOST "mqtt.2gclmqtt.fun" // MQTT服务器域名或IP#defineSERVER_PORT "1883" // MQTT服务器端口（一般为1883不用改）#defineESP8266_WIFI_INFO "AT+CWJAP=\""WIFI_SSID"\",\""WIFI_PSWD"\"\r\n"#defineESP8266_ONENET_INFO "AT+CIPSTART=\"TCP\",\""SERVER_HOST"\","SERVER_PORT"\r\n"unsignedcharesp8266_buf[128];unsignedshortesp8266_cnt=0,esp8266_cntPre=0;externu8ESP8266_INIT_OK;voidESP8266_Clear(void){ memset(esp8266_buf,0,sizeof(esp8266_buf)); esp8266_cnt=0;}_BoolESP8266_WaitRecive(void){ if(esp8266_cnt==0) //如果接收计数为0则说明没有处于接收数据中，所以直接跳出，结束函数 returnREV_WAIT; if(esp8266_cnt==esp8266_cntPre) //如果上一次的值和这次相同，则说明接收完毕 { esp8266_cnt=0; //清0接收计数 returnREV_OK; //返回接收完成标志 } esp8266_cntPre=esp8266_cnt; //置为相同 returnREV_WAIT; //返回接收未完成标志}_BoolESP8266_SendCmd(char*cmd,char*res){ unsignedchartimeOut=200; Usart_SendString(USART2,(unsignedchar*)cmd,strlen((constchar*)cmd)); while(timeOut--) { if(ESP8266_WaitRecive()==REV_OK) //如果收到数据 { if(strstr((constchar*)esp8266_buf,res)!=NULL) //如果检索到关键词 { ESP8266_Clear(); //清空缓存 return0; } } Delay_ms(10); } return1;}voidESP8266_SendData(unsignedchar*data,unsignedshortlen){ charcmdBuf[32]; ESP8266_Clear(); //清空接收缓存 sprintf(cmdBuf,"AT+CIPSEND=%d\r\n",len); //发送命令 if(!ESP8266_SendCmd(cmdBuf,">")) //收到‘>’时可以发送数据 { Usart_SendString(USART2,data,len); //发送设备连接请求数据 }}unsignedchar*ESP8266_GetIPD(unsignedshorttimeOut){ char*ptrIPD=NULL; do { if(ESP8266_WaitRecive()==REV_OK) //如果接收完成 { ptrIPD=strstr((char*)esp8266_buf,"IPD,"); //搜索“IPD”头 if(ptrIPD==NULL) //如果没找到，可能是IPD头的延迟，还是需要等待一会，但不会超过设定的时间 { //DEBUG_LOG("\"IPD\"notfound\r\n"); } else { ptrIPD=strchr(ptrIPD,':'); //找到':' if(ptrIPD!=NULL) { ptrIPD++; return(unsignedchar*)(ptrIPD); } else returnNULL; } } Delay_ms(5); timeOut--; //延时等待 }while(timeOut>0); returnNULL; //超时还未找到，返回空指针}voidESP8266_Init(void){ while(ESP8266_SendCmd("AT\r\n","OK")) //测试AT通讯 Delay_ms(200); while(ESP8266_SendCmd("AT+RST\r\n","OK")) //软复位，重置esp01s Delay_ms(200); ESP8266_SendCmd("AT+CIPCLOSE\r\n",""); Delay_ms(200); while(ESP8266_SendCmd("AT+CWMODE=1\r\n","OK")) //设置esp01s为ap模式，用于链接WiFi Delay_ms(200); while(ESP8266_SendCmd(ESP8266_WIFI_INFO,"GOTIP")) //发送wifi账号密码，让esp01s链接wifi Delay_ms(200); ESP8266_SendCmd("AT+CIPSNTPCFG=1,8,\"\"\r\n","OK"); //配置阿里云服务器域名 Delay_ms(200); UsartPrintf(USART_DEBUG,"wifiok\r\n"); ESP8266_SendCmd("AT+MQTTUSER