This document describes the design and implementation of a vehicle accident notification system using a gravity sensor. The system uses an Arduino Nano, accelerometer gravity sensor, GSM and GPS modules to detect when a vehicle accident occurs, determine the location, and notify emergency services. When an accident is detected, the system sends a notification through the GSM module with the accident location from the GPS module to alert rescue teams so they can quickly respond. The aim is to automatically detect accidents and alert emergency services to improve emergency response times.

1. Design & Implementation of Vehicle Accident Notification System
Using Gravity Sensor
Submitted By
Supervised By
Nur Muhammad Babu ID : 2019310021
Md. Neamul Haque ID : 2019310022
Md. Sabbir Hossain Shikder ID : 2019310044
Khairul Islam ID : 2019310035
Md. Firoz Ali ID : 2019310028
Md. Firoz Ali ID : 2019310028
Taslim Ahmed
Assistant Professsor & Head
Department of Electrical and Electronic Engineering
Rajshahi Science & Technology University (RSTU), Natore

2. ABSTRACT
The fastest growth of technology has made our lifestyle Comfort. The technology also
increased the traffic risks and the road accidents take place frequently which causes huge
loss of life because inadequate of emergency facility our project will help this
displacement. The project concludes when a vehicle meets with an accident, the
Accelerometer Gravity Sensor will analyze the signal and this signal to Arduino. The
notification is sent through GSM module the location of the accident is gathered with the
help of GPS module, to notify police control room or a rescue team. So, the police or
rescue team can immediately trace the location through the GPS Module, after receiving
the information. Then after confirming the location necessary action will be taken And
Video of the accident can be live streamed or can be stored with the help of camera. The
aim of this work is to automatically detect an accident and alert the rescue team or
control station.

3. Single Axis Trackers:
Objectives
1. Instant accident notification
2. Accident spot tracking
3. Safety Driving
4. Remote location access by GSM & GPS

4. Single Axis Trackers:
Required Components
1. Arduino Nano
2. ADXL335 Accelerometer Gravity Sensor
3. Buck Converter
4. AC To DC Adapter
5. SIM900A GSM Module
6. NEO-6M GPS Module

5. Block Diagram

6. Block Diagram

7. Arduino Nano
The Arduino Nano is an open-source microcontroller board based on the Microchip
ATmega328P microcontroller and developed by Arduino.cc. The board is equipped with
sets of digital and analog input/output (I/O) pins that may be interfaced to various
expansion boards (shields) and other circuits. The board has 14 digital I/O pins (six capable
of PWM output), 6 analog I/O pins, and is programmable with the Arduino IDE (Integrated
Development Environment), via a type B USB cable.
Fig -1 : Arduino Nano

8. Acclerometer Gravity Sensor
ADXL345 Accelerometer module consists of an ADXL345 Accelerometer IC,
Voltage Regulator IC, Level Shifter IC, resistors, and capacitors in an integrated
circuit. Different manufacturers use a different voltage regulator IC.ADXL345
IC from Analog Devices is the brain of this module. The ADXL345 is a small,
thin, low power, complete 3-axis accelerometer with signal conditioned
voltage outputs. The product measures acceleration with a minimum full-scale
range of ±16g.

9. Flow Chart

10. Sim900A GSM Module
A GSM module or a GPRS module is a chip or circuit that will be used to establish communication between a mobile
device or a computing machine and a GSM or GPRS system.
Specs:
Dual-Band 900/ 1800 MHz.
GPRS multi-slot class 10/8.
GPRS mobile station class B.
Compliant to GSM phase 2/2+ Class 4 (2 W @ 900 MHz) Class 1 (1 W @ 1800MHz)
Dimensions: 24x24x3mm.
Weight: 3.4g.
Control via AT commands (GSM 07.07 ,07.05 and SIMCOM enhanced AT Commands)
SIM application toolkit.

11. NEO-6M GPS Module
The Global Positioning System (GPS) is a system consisting of 31 satellites orbiting earth. We can know
their exact location because they are constantly transmitting position information with time through
radio signals.
Features :
5Hz position update rate
Operating temperature range: -40 TO 85°CUART TTL socket
EEPROM to save configuration settings
Rechargeable battery for Backup
The cold start time of 38 s and Hot start time of 1 s
Supply voltage: 3.3 V
Configurable from 4800 Baud to 115200 Baud rates. (default 9600)
SuperSense ® Indoor GPS: -162 dBm tracking sensitivity
Support SBAS (WAAS, EGNOS, MSAS, GAGAN)
Separated 18X18mm GPS antenna

12. System Physical Appearance

13. Advantages:
▪ This method is a system of urgent assistance. ▪ Monitors all risks
and hazards.
▪ To the nearest hospitals and police stations, warning notices are
sent.
▪ It can be included in an affordable program. The warning
message about the accident is sent automatically. ▪ It is possible
to use this scheme for a social cause.

14. Applications
▪ It can be used to shield passengers in cars/motor vehicles.
▪ It may be used by the health department to survey the
wider scale of incidents that have occurred.
▪ We can also use this framework in traffic estimation with some modifications.

15. Future Development:
1. Multiple sensors
2. Data logger
3. Desktop application for real time monitoring
4. Multi node points for communication

16. Conclusion
This device offers the most realistic alternative to the inadequate
emergency services given to victims of road accidents. With the
aid of this technology, when an accident happens, prompt action
can be taken by alerting the appropriate individuals by sending a
message.

17. Thank You!