文章目录
1 简介2 主要器件2.1 ESP32-CAM 模块2.2 红外热释电传感器3 实现效果4 部分实现代码5 最后1 简介
Hi，大家好，这里是丹成学长，今天向大家介绍一个学长做的单片机项目
基于单片机的家庭智能监控系统
大家可用于 课程设计 或 毕业设计
单片机-嵌入式毕设选题大全及项目分享:
/m0_71572576/article/details/125409052
2 主要器件
红外传感器-7mESP32-CAMUSB到TTL串行转换器5V主控MCU(可选)2.1 ESP32-CAM 模块
模块包含一块ESP32-CAM的MCU和一个OV2640的200W像素摄像头，ESP32-CAM除了支持OV2640外还支持OV7670摄像头，不过7670只有30W像素
2.2 红外热释电传感器
3 实现效果
当是房间内有人出现，摄像头自动打开，通过手机或者电脑浏览就可以访问摄像头
4 部分实现代码
部分关键代码：
/*albino98/albino98/telegram_esp32.git*/#ifdef ESP32#include <WiFi.h>#else#include <ESP8266WiFi.h>#endif#include <WiFiClientSecure.h>#include <UniversalTelegramBot.h> // Universal Telegram Bot Library written by Brian Lough: /witnessmenow/Universal-Arduino-Telegram-Bot#include <ArduinoJson.h>#include "esp_camera.h"#include "soc/soc.h"#include "soc/rtc_cntl_reg.h"#include "driver/rtc_io.h"// Replace with your network credentialsconst char* ssid = "NetworkName";const char* password = "NetworkPW";const int motionSensor = 13;int armed = 1;#define BOTtoken "xxxxxxx:xxxxxxxxxxxxxxxxxx" // your Bot Token (Get from Botfather)// Use @myidbot to find out the chat ID of an individual or a group#define CHAT_ID "xxxxxxx"//Pin definition for CAMERA_MODEL_AI_THINKER#define PWDN_GPIO_NUM 32#define RESET_GPIO_NUM -1#define XCLK_GPIO_NUM 0#define SIOD_GPIO_NUM 26#define SIOC_GPIO_NUM 27#define Y9_GPIO_NUM 35#define Y8_GPIO_NUM 34#define Y7_GPIO_NUM 39#define Y6_GPIO_NUM 36#define Y5_GPIO_NUM 21#define Y4_GPIO_NUM 19#define Y3_GPIO_NUM 18#define Y2_GPIO_NUM 5#define VSYNC_GPIO_NUM 25#define HREF_GPIO_NUM 23#define PCLK_GPIO_NUM 22WiFiClientSecure client;UniversalTelegramBot bot(BOTtoken, client);// Checks for new messages every 1 second.int botRequestDelay = 1000;unsigned long lastTimeBotRan;const int ledPin = 4;bool ledState = LOW;camera_fb_t * fb;uint8_t* fb_buffer;size_t fb_length;int currentByte;boolean startTimer = false;// Handle what happens when you receive new messagesvoid handleNewMessages(int numNewMessages) {Serial.println("handleNewMessages");Serial.println(String(numNewMessages));for (int i=0; i<numNewMessages; i++) {// Chat id of the requesterString chat_id = String(bot.messages[i].chat_id);if (chat_id != CHAT_ID){bot.sendMessage(chat_id, "Unauthorized user", "");continue;}// Print the received messageString text = bot.messages[i].text;Serial.println(text);String from_name = bot.messages[i].from_name;if (text == "/start") {String welcome = "Welcome, " + from_name + ".\n";welcome += "Use the following commands to control your outputs.\n\n";welcome += "/take_photo to take a picture \n";welcome += "/arm to arm the security system \n";welcome += "/disarm to disarm the security system \n";welcome += "/led_on to turn GPIO ON \n";welcome += "/led_off to turn GPIO OFF \n";welcome += "/state to request current GPIO state and security system state \n";bot.sendMessage(chat_id, welcome, "");}if (text == "/led_on") {bot.sendMessage(chat_id, "LED state set to ON", "");ledState = HIGH;digitalWrite(ledPin, ledState);}if (text == "/led_off") {bot.sendMessage(chat_id, "LED state set to OFF", "");ledState = LOW;digitalWrite(ledPin, ledState);}if (text == "/take_photo") {take_send_photo(CHAT_ID);}if (text == "/security_on") {armed = 1;bot.sendMessage(chat_id, "Security System is ON", "");}if (text == "/security_off") {armed = 0;bot.sendMessage(chat_id, "Security System is OFF", "");}if (text == "/state") {if (digitalRead(ledPin)){bot.sendMessage(chat_id, "LED is ON", "");}else{bot.sendMessage(chat_id, "LED is OFF", "");}if(armed == 1){bot.sendMessage(chat_id, "The security system is ON", "");}else {bot.sendMessage(chat_id, "The security system is OFF", ""); }}}}bool isMoreDataAvailable() {return (fb_length - currentByte);}uint8_t photoNextByte() {currentByte++;return (fb_buffer[currentByte - 1]);}void take_send_photo(String chat_id){camera_fb_t * fb = NULL;fb = esp_camera_fb_get();currentByte = 0;fb_length = fb->len;fb_buffer = fb->buf;bot.sendPhotoByBinary(chat_id, "image/jpeg", fb->len, isMoreDataAvailable, photoNextByte, nullptr, nullptr);esp_camera_fb_return(fb);fb_length = NULL;fb_buffer = NULL;}void setup() {armed = 1;WRITE_PERI_REG(RTC_CNTL_BROWN_OUT_REG,0);//disable brownout detectorSerial.begin(115200);camera_config_t configg;configg.ledc_channel = LEDC_CHANNEL_0;configg.ledc_timer = LEDC_TIMER_0;configg.pin_d0 = Y2_GPIO_NUM;configg.pin_d1 = Y3_GPIO_NUM;configg.pin_d2 = Y4_GPIO_NUM;configg.pin_d3 = Y5_GPIO_NUM;configg.pin_d4 = Y6_GPIO_NUM;configg.pin_d5 = Y7_GPIO_NUM;configg.pin_d6 = Y8_GPIO_NUM;configg.pin_d7 = Y9_GPIO_NUM;configg.pin_xclk = XCLK_GPIO_NUM;configg.pin_pclk = PCLK_GPIO_NUM;configg.pin_vsync = VSYNC_GPIO_NUM;configg.pin_href = HREF_GPIO_NUM;configg.pin_sscb_sda = SIOD_GPIO_NUM;configg.pin_sscb_scl = SIOC_GPIO_NUM;configg.pin_pwdn = PWDN_GPIO_NUM;configg.pin_reset = RESET_GPIO_NUM;configg.xclk_freq_hz = 20000000;configg.pixel_format = PIXFORMAT_JPEG;pinMode(ledPin, OUTPUT);digitalWrite(ledPin, ledState);rtc_gpio_hold_dis(GPIO_NUM_4);pinMode(GPIO_NUM_13, INPUT_PULLUP);if(psramFound()){configg.frame_size = FRAMESIZE_UXGA;configg.jpeg_quality = 10;configg.fb_count = 2;}else{configg.frame_size = FRAMESIZE_SVGA;configg.jpeg_quality = 12;configg.fb_count = 1;}//Init Cameraesp_err_t err = esp_camera_init(&configg);if(err != ESP_OK){Serial.printf("Camera init failed with error"); return;}// Connect to Wi-FiWiFi.mode(WIFI_STA);WiFi.begin(ssid, password);while (WiFi.status() != WL_CONNECTED) {delay(1000);Serial.println("Connecting to WiFi..");}// Print ESP32 Local IP AddressSerial.println(WiFi.localIP());}void loop() {if(armed == 1){int isDetected = digitalRead(13);if(isDetected == 1){Serial.println("Presence detected");take_send_photo(CHAT_ID);delay(3000);}}//delay(1000);//if (millis() > lastTimeBotRan + botRequestDelay) {int numNewMessages = bot.getUpdates(bot.last_message_received + 1);while(numNewMessages) {Serial.println("got response");handleNewMessages(numNewMessages);numNewMessages = bot.getUpdates(bot.last_message_received + 1);}delay(1000);lastTimeBotRan = millis();// }}
单片机-嵌入式毕设选题大全及项目分享:
/m0_71572576/article/details/125409052
