Vehicle Accident Alert System Using Accelerometer GPS And GSM

 

Block Diagram :-

Circuit Diagram :-

Code :-

//Prateek //www.prateeks.in #include <AltSoftSerial.h> #include <TinyGPS++.h> #include<Wire.h> #include <math.h> #include <SoftwareSerial.h> const String EMERGENCY_PHONE = "+91xxxxxxxxxx"; #define rxPin 2 #define txPin 3 SoftwareSerial sim800(rxPin, txPin); AltSoftSerial neogps; TinyGPSPlus gps; //gps(9,8) String sms_status, sender_number, received_date, msg; String latitude, longitude; #define BUZZER 12 #define BUTTON 11 #define xPin A1 #define yPin A2 #define zPin A3 byte updateflag; int xaxis = 0, yaxis = 0, zaxis = 0; int deltx = 0, delty = 0, deltz = 0; int vibration = 2; int devibrate = 75; int magnitude = 0; int sensitivity = 20; double angle; boolean impact_detected = false; unsigned long time1; unsigned long impact_time; unsigned long alert_delay = 30000; void setup() { Serial.begin(9600); sim800.begin(9600); neogps.begin(9600); pinMode(BUZZER, OUTPUT); pinMode(BUTTON, INPUT_PULLUP); sms_status = ""; sender_number = ""; received_date = ""; msg = ""; sim800.println("AT"); delay(1000); sim800.println("ATE1"); delay(1000); sim800.println("AT+CPIN?"); delay(1000); sim800.println("AT+CMGF=1"); delay(1000); sim800.println("AT+CNMI=1,1,0,0,0"); delay(1000); time1 = micros(); xaxis = analogRead(xPin); yaxis = analogRead(yPin); zaxis = analogRead(zPin); } void loop() { if (micros() - time1 > 1999) Impact(); if (updateflag > 0) { updateflag = 0; Serial.println("Impact detected!!"); Serial.print("Magnitude:"); Serial.println(magnitude); getGps(); digitalWrite(BUZZER, HIGH); impact_detected = true; impact_time = millis(); } if (impact_detected == true) { if (millis() - impact_time >= alert_delay) { digitalWrite(BUZZER, LOW); makeCall(); delay(1000); sendAlert(); impact_detected = false; impact_time = 0; } } if (digitalRead(BUTTON) == LOW) { delay(200); digitalWrite(BUZZER, LOW); impact_detected = false; impact_time = 0; } while (sim800.available()) { parseData(sim800.readString()); } while (Serial.available()) { sim800.println(Serial.readString()); } } void Impact() { time1 = micros(); int oldx = xaxis; int oldy = yaxis; int oldz = zaxis; xaxis = analogRead(xPin); yaxis = analogRead(yPin); zaxis = analogRead(zPin); vibration--; Serial.print("Vibration = "); Serial.println(vibration); if (vibration < 0) vibration = 0; if (vibration > 0) return; deltx = xaxis - oldx; delty = yaxis - oldy; deltz = zaxis - oldz; magnitude = sqrt(sq(deltx) + sq(delty) + sq(deltz)); if (magnitude >= sensitivity) //impact detected { updateflag = 1; vibration = devibrate; } else { magnitude = 0; } } void parseData(String buff) { Serial.println(buff); unsigned int len, index; index = buff.indexOf("\r"); buff.remove(0, index + 2); buff.trim(); if (buff != "OK") { index = buff.indexOf(":"); String cmd = buff.substring(0, index); cmd.trim(); buff.remove(0, index + 2); if (cmd == "+CMTI") { index = buff.indexOf(","); String temp = buff.substring(index + 1, buff.length()); temp = "AT+CMGR=" + temp + "\r"; sim800.println(temp); } else if (cmd == "+CMGR") { if (buff.indexOf(EMERGENCY_PHONE) > 1) { buff.toLowerCase(); if (buff.indexOf("get gps") > 1) { getGps(); String sms_data; sms_data = "GPS Location Data\r"; sms_data += "http://maps.google.com/maps?q=loc:"; sms_data += latitude + "," + longitude; sendSms(sms_data); } } } } else { } } void getGps() { // Can take up to 60 seconds boolean newData = false; for (unsigned long start = millis(); millis() - start < 2000;) { while (neogps.available()) { if (gps.encode(neogps.read())) { newData = true; break; } } } if (newData) { latitude = String(gps.location.lat(), 6); longitude = String(gps.location.lng(), 6); newData = false; } else { Serial.println("No GPS data is available"); latitude = ""; longitude = ""; } Serial.print("Latitude= "); Serial.println(latitude); Serial.print("Lngitude= "); Serial.println(longitude); } void sendAlert() { String sms_data; sms_data = "Accident Alert!!\r"; sms_data += "http://maps.google.com/maps?q=loc:"; sms_data += latitude + "," + longitude; sendSms(sms_data); } void makeCall() { Serial.println("calling...."); sim800.println("ATD" + EMERGENCY_PHONE + ";"); delay(20000); //20 sec delay sim800.println("ATH"); delay(1000); //1 sec delay } void sendSms(String text) { //return; sim800.print("AT+CMGF=1\r"); delay(1000); sim800.print("AT+CMGS=\"" + EMERGENCY_PHONE + "\"\r"); delay(1000); sim800.print(text); delay(100); sim800.write(0x1A); delay(1000); Serial.println("SMS Sent Successfully."); } boolean SendAT(String at_command, String expected_answer, unsigned int timeout) { uint8_t x = 0; boolean answer = 0; String response; unsigned long previous; while ( sim800.available() > 0) sim800.read(); sim800.println(at_command); x = 0; previous = millis(); do { if (sim800.available() != 0) { response += sim800.read(); x++; if (response.indexOf(expected_answer) > 0) { answer = 1; break; } } } while ((answer == 0) && ((millis() - previous) < timeout)); Serial.println(response); return answer; }



Video :-