\n
#define BLYNK_TEMPLATE_ID “YOUR_TEMPLATE_ID”
\n#define BLYNK_TEMPLATE_NAME “Fire_Alarm_System”
\n#define BLYNK_AUTH_TOKEN “YOUR_AUTH_TOKEN”<\/p>\n
#include <WiFi.h>
\n#include <BlynkSimpleEsp32.h>
\n#include <DHT.h>
\n#include <FirebaseESP32.h><\/p>\n
\/\/ \u0110\u1ecbnh ngh\u0129a ch\u00e2n k\u1ebft n\u1ed1i
\n#define DHT_PIN 15
\n#define DHT_TYPE DHT11
\n#define MQ2_PIN 35
\n#define FLAME_PIN 2
\n#define BUZZER_PIN 4
\n#define LED_PIN 16<\/p>\n
\/\/ Th\u00f4ng s\u1ed1 WiFi
\nchar ssid[] = “YOUR_WIFI_SSID”;
\nchar pass[] = “YOUR_WIFI_PASSWORD”;<\/p>\n
\/\/ Kh\u1edfi t\u1ea1o c\u1ea3m bi\u1ebfn
\nDHT dht(DHT_PIN, DHT_TYPE);
\nBlynkTimer timer;<\/p>\n
\/\/ Ng\u01b0\u1ee1ng c\u1ea3nh b\u00e1o
\nint smokeThreshold = 400;
\nint tempThreshold = 50;<\/p>\n
void setup() {
\nSerial.begin(115200);<\/p>\n
\/\/ Kh\u1edfi t\u1ea1o c\u00e1c ch\u00e2n
\npinMode(FLAME_PIN, INPUT);
\npinMode(BUZZER_PIN, OUTPUT);
\npinMode(LED_PIN, OUTPUT);<\/p>\n
\/\/ Kh\u1edfi t\u1ea1o c\u1ea3m bi\u1ebfn
\ndht.begin();<\/p>\n
\/\/ K\u1ebft n\u1ed1i WiFi v\u00e0 Blynk
\nBlynk.begin(BLYNK_AUTH_TOKEN, ssid, pass);<\/p>\n
\/\/ Thi\u1ebft l\u1eadp timer \u0111\u1ecdc c\u1ea3m bi\u1ebfn
\ntimer.setInterval(2000L, readSensors);<\/p>\n
Serial.println(“H\u1ec7 th\u1ed1ng b\u00e1o ch\u00e1y IoT \u0111\u00e3 kh\u1edfi \u0111\u1ed9ng!”);
\n}<\/p>\n
void loop() {
\nBlynk.run();
\ntimer.run();
\n}<\/p>\n
void readSensors() {
\n\/\/ \u0110\u1ecdc d\u1eef li\u1ec7u t\u1eeb c\u1ea3m bi\u1ebfn
\nfloat temperature = dht.readTemperature();
\nfloat humidity = dht.readHumidity();
\nint smokeLevel = analogRead(MQ2_PIN);
\nint flameDetected = digitalRead(FLAME_PIN);<\/p>\n
\/\/ Ki\u1ec3m tra d\u1eef li\u1ec7u h\u1ee3p l\u1ec7
\nif (isnan(temperature) || isnan(humidity)) {
\nSerial.println(“L\u1ed7i \u0111\u1ecdc c\u1ea3m bi\u1ebfn DHT!”);
\nreturn;
\n}<\/p>\n
\/\/ G\u1eedi d\u1eef li\u1ec7u l\u00ean Blynk
\nBlynk.virtualWrite(V0, temperature);
\nBlynk.virtualWrite(V1, humidity);
\nBlynk.virtualWrite(V2, smokeLevel);
\nBlynk.virtualWrite(V3, flameDetected);<\/p>\n
\/\/ Ki\u1ec3m tra \u0111i\u1ec1u ki\u1ec7n c\u1ea3nh b\u00e1o
\nbool fireAlert = false;<\/p>\n
if (temperature > tempThreshold) {
\nSerial.println(“C\u1ea2NH B\u00c1O: Nhi\u1ec7t \u0111\u1ed9 cao!”);
\nfireAlert = true;
\n}<\/p>\n
if (smokeLevel > smokeThreshold) {
\nSerial.println(“C\u1ea2NH B\u00c1O: Ph\u00e1t hi\u1ec7n kh\u00f3i!”);
\nfireAlert = true;
\n}<\/p>\n
if (flameDetected == LOW) {
\nSerial.println(“C\u1ea2NH B\u00c1O: Ph\u00e1t hi\u1ec7n l\u1eeda!”);
\nfireAlert = true;
\n}<\/p>\n
\/\/ K\u00edch ho\u1ea1t b\u00e1o \u0111\u1ed9ng
\nif (fireAlert) {
\nactivateAlarm();
\nsendFirebaseAlert();
\nBlynk.logEvent(“fire_alert”, “Ph\u00e1t hi\u1ec7n ch\u00e1y t\u1ea1i node!”);
\n} else {
\ndeactivateAlarm();
\n}<\/p>\n
\/\/ In th\u00f4ng tin l\u00ean Serial
\nSerial.printf(“Nhi\u1ec7t \u0111\u1ed9: %.1f\u00b0C, \u0110\u1ed9 \u1ea9m: %.1f%%, Kh\u00f3i: %d, L\u1eeda: %s\\n”,
\ntemperature, humidity, smokeLevel,
\nflameDetected == LOW ? “C\u00d3” : “KH\u00d4NG”);
\n}<\/p>\n
void activateAlarm() {
\ndigitalWrite(BUZZER_PIN, HIGH);
\ndigitalWrite(LED_PIN, HIGH);
\nBlynk.virtualWrite(V4, 1); \/\/ B\u00e1o tr\u1ea1ng th\u00e1i c\u1ea3nh b\u00e1o
\n}<\/p>\n
void deactivateAlarm() {
\ndigitalWrite(BUZZER_PIN, LOW);
\ndigitalWrite(LED_PIN, LOW);
\nBlynk.virtualWrite(V4, 0);
\n}<\/p>\n
void sendFirebaseAlert() {
\n\/\/ Code g\u1eedi c\u1ea3nh b\u00e1o l\u00ean Firebase
\n\/\/ Th\u1ef1c hi\u1ec7n g\u1ecdi API ho\u1eb7c webhook \u0111\u1ec3 g\u1eedi SMS\/Email
\n}<\/p>\n
\/\/ H\u00e0m \u0111i\u1ec1u khi\u1ec3n t\u1eeb xa qua Blynk
\nBLYNK_WRITE(V5) {
\nint buttonState = param.asInt();
\nif (buttonState == 1) {
\n\/\/ Reset h\u1ec7 th\u1ed1ng
\ndeactivateAlarm();
\nSerial.println(“H\u1ec7 th\u1ed1ng \u0111\u00e3 \u0111\u01b0\u1ee3c reset t\u1eeb xa”);
\n}
\n}<\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n
<\/span>T\u00edch h\u1ee3p Firebase:<\/strong><\/span><\/h3>\n\n
\n
<\/div>\n
\n
\n
\n
<\/code><\/code>#include <FirebaseESP32.h><\/p>\n<\/code><\/code>\/\/ C\u1ea5u h\u00ecnh Firebase
\n#define FIREBASE_HOST “your-project.firebaseio.com”
\n#define FIREBASE_AUTH “your-database-secret”<\/p>\n<\/code><\/code>FirebaseData firebaseData;<\/p>\n<\/code><\/code>void setupFirebase() {
\nFirebase.begin(FIREBASE_HOST, FIREBASE_AUTH);
\nFirebase.reconnectWiFi(true);
\n}<\/p>\n<\/code><\/code>void sendFirebaseData(float temp, float hum, int smoke, int flame) {
\nString path = “\/fire_alarm_data\/” + String(millis());<\/p>\nFirebaseJson json;
\njson.set(“temperature”, temp);
\njson.set(“humidity”, hum);
\njson.set(“smoke_level”, smoke);
\njson.set(“flame_detected”, flame);
\njson.set(“timestamp”, millis());
\njson.set(“location”, “T\u1ea7ng 5 – C\u0103n h\u1ed9 A501”);<\/p>\n
if (Firebase.setJSON(firebaseData, path, json)) {
\nSerial.println(“D\u1eef li\u1ec7u \u0111\u00e3 g\u1eedi l\u00ean Firebase”);
\n} else {
\nSerial.println(“L\u1ed7i g\u1eedi Firebase: ” + firebaseData.errorReason());
\n}
\n}<\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n
<\/span>Thi\u1ebft k\u1ebf \u1ee9ng d\u1ee5ng mobile<\/span><\/h2>\n<\/span>T\u00ednh n\u0103ng ch\u00ednh c\u1ee7a app:<\/strong><\/span><\/h3>\n\n- \n
Gi\u00e1m s\u00e1t real-time:<\/strong>\u00a0Hi\u1ec3n th\u1ecb d\u1eef li\u1ec7u t\u1eeb t\u1ea5t c\u1ea3 node trong t\u00f2a nh\u00e0<\/p>\n<\/li>\n- \n
C\u1ea3nh b\u00e1o kh\u1ea9n c\u1ea5p:<\/strong>\u00a0Push notification v\u1edbi \u00e2m thanh l\u1edbn khi ph\u00e1t hi\u1ec7n ch\u00e1y<\/p>\n<\/li>\n- \n
B\u1ea3n \u0111\u1ed3 t\u00f2a nh\u00e0:<\/strong>\u00a0Hi\u1ec3n th\u1ecb v\u1ecb tr\u00ed ch\u00ednh x\u00e1c node b\u00e1o ch\u00e1y<\/p>\n<\/li>\n- \n
H\u01b0\u1edbng d\u1eabn tho\u00e1t hi\u1ec3m:<\/strong>\u00a0Ch\u1ec9 d\u1eabn l\u1ed1i tho\u00e1t an to\u00e0n nh\u1ea5t<\/p>\n<\/li>\n- \n
L\u1ecbch s\u1eed s\u1ef1 ki\u1ec7n:<\/strong>\u00a0L\u01b0u tr\u1eef v\u00e0 ph\u00e2n t\u00edch c\u00e1c s\u1ef1 c\u1ed1 \u0111\u00e3 x\u1ea3y ra<\/p>\n<\/li>\n<\/ul>\n<\/span>C\u00f4ng ngh\u1ec7 ph\u00e1t tri\u1ec3n app:<\/strong><\/span><\/h3>\n\n- \n
Frontend:<\/strong>\u00a0React Native ho\u1eb7c Flutter<\/p>\n<\/li>\n- \n
Backend:<\/strong>\u00a0Node.js v\u1edbi Express<\/p>\n<\/li>\n- \n
Database:<\/strong>\u00a0Firebase Realtime Database<\/p>\n<\/li>\n- \n
Push notification:<\/strong>\u00a0Firebase Cloud Messaging<\/p>\n<\/li>\n<\/ul>\n<\/span>Ki\u1ebfn tr\u00fac m\u1ea1ng v\u00e0 tri\u1ec3n khai<\/span><\/h2>\n<\/span>M\u00f4 h\u00ecnh tri\u1ec3n khai cho t\u00f2a chung c\u01b0:<\/strong><\/span><\/h3>\nPh\u00e2n b\u1ed1 node c\u1ea3m bi\u1ebfn:<\/strong><\/p>\n\n- \n
M\u1ed7i c\u0103n h\u1ed9: 1-2 node (ph\u00f2ng kh\u00e1ch, b\u1ebfp)<\/p>\n<\/li>\n
- \n
H\u00e0nh lang: 1 node m\u1ed7i 15-20m<\/p>\n<\/li>\n
- \n
T\u1ea7ng h\u1ea7m \u0111\u1ec3 xe: 2-3 node<\/p>\n<\/li>\n
- \n
Khu v\u1ef1c c\u00f4ng c\u1ed9ng: 1 node m\u1ed7i zone<\/p>\n<\/li>\n<\/ul>\n
H\u1ec7 th\u1ed1ng m\u1ea1ng:<\/strong><\/p>\n\n- \n
WiFi ch\u00ednh: K\u1ebft n\u1ed1i c\u00e1c node trong ph\u1ea1m vi<\/p>\n<\/li>\n
- \n
LoRa backup: D\u1ef1 ph\u00f2ng khi WiFi g\u1eb7p s\u1ef1 c\u1ed1<\/p>\n<\/li>\n
- \n
Gateway trung t\u00e2m: T\u1ea7ng 1 ho\u1eb7c t\u1ea7ng k\u1ef9 thu\u1eadt<\/p>\n<\/li>\n<\/ul>\n
<\/span>T\u00ednh n\u0103ng n\u00e2ng cao:<\/strong><\/span><\/h3>\nPh\u00e2n t\u00edch AI\/ML:<\/strong><\/p>\n\n- \n
D\u1ef1 \u0111o\u00e1n nguy c\u01a1 ch\u00e1y d\u1ef1a tr\u00ean pattern d\u1eef li\u1ec7u<\/p>\n<\/li>\n
- \n
Gi\u1ea3m false alarm th\u00f4ng qua machine learning<\/p>\n<\/li>\n
- \n
Ph\u00e2n t\u00edch xu h\u01b0\u1edbng \u0111\u1ec3 b\u1ea3o tr\u00ec proactive<\/p>\n<\/li>\n<\/ul>\n
T\u00edch h\u1ee3p h\u1ec7 th\u1ed1ng t\u00f2a nh\u00e0:<\/strong><\/p>\n\n- \n
K\u1ebft n\u1ed1i v\u1edbi h\u1ec7 th\u1ed1ng HVAC \u0111\u1ec3 ng\u1eebng th\u00f4ng gi\u00f3<\/p>\n<\/li>\n
- \n
\u0110i\u1ec1u khi\u1ec3n thang m\u00e1y v\u1ec1 t\u1ea7ng 1 khi ch\u00e1y<\/p>\n<\/li>\n
- \n
M\u1edf kh\u00f3a c\u1eeda tho\u00e1t hi\u1ec3m t\u1ef1 \u0111\u1ed9ng<\/p>\n<\/li>\n<\/ul>\n
Li\u00ean k\u1ebft c\u1ee9u h\u1ed9:<\/strong><\/p>\n