2. MOTIVATION
About 1.24 million people die each year as a result of
road traffic crashes.
Without action, road traffic crashes are predicted to result
in the deaths of around 1.9 million people annually by
2020.
Decade of Action for Road Safety (2011–2020) with the
aim of saving millions of lives by improving the safety
of roads, vehicles and improving emergency services.
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3. INTRODUCTION
Arduino is interfaced with piezo electric sensor to detect
accidents.
GSM is interfaced to Arduino to send notification
messages to Authorized users.
Buzzer is interfaced with Arduino to alert accidents.
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5. HARDWARE COMPONENTS
Arduino Micro controller
Piezo Electric Sensor
GSM modem
Voltage Regulator
Buzzer
Led
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6. MICRO CONTROLLER
28-pin AVR Microcontroller
Flash Program Memory: 32
kbytes
EEPROM Data Memory: 1
kbytes
SRAM Data Memory: 2 kb
I/O Pins: 23
Timers: Two 8-bit / One 16-bit
A/D Converter: 10-bit Six PWM:
Six Channels
RTC: Yes with Separate
Oscillator
MSSP: SPI and I²C Master and
Slave Support
USART: Yes
External Oscillator: up to 20MHz
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7. RELAY
A relay is a simple electromechanical switch made up
of an electromagnet and a set of contacts.
Relays are found hidden in all sorts of devices. In fact,
some of the first computers ever built used relays to
implement Boolean gates.
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8. PIEZO ELECTRIC SENSOR
A piezoelectric sensor is a device that uses the
piezoelectric effect, to measure changes in pressure,
acceleration, temperature, strain or force by converting
them to an electrical charge.
When accident occurs, Piezo electric sensor detects the
vibrations based on the vibrations GSM module sends
messages to the authorized users.
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9. GSM MODULE
GSM module is interfaced to Arduino module Serially.
AT commands are used to send messages from GSM
module to the authorized users.
GSM TX pin is connected to Arduino RX pin.
GSM RX pin is connected to Arduino TX pin.
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