Now-a-days, it became very difficult to know that an accident has occurred and to locate the position where it has happened. It’s very difficult for the lives of victims until anyone noticed and informed it to the ambulance or to any hospital and if it occurs in remote areas there will be no hope to survive. To overcome these, GSM and GPS technologies are used. The GPS based vehicle accident identification module contains a vibrating sensor and a GPS modem connected to the microcontroller. When an accident occurs, the vibration sensor gives the signal to the microcontroller, which sends the information to the LCD display through GSM network. The vehicle is tracked for every five minutes using GPS and the position of the vehicle is also send to the mobile in terms of latitude and longitude which is processed by the pc. 1.1 Objective
The main aim of this project is to find the accident spot at any place and intimating the location to mobiles through the GSM and GPS networks. 1.2 Hardware requirements
1.3 Software requirements
1. Keil software
2. Flash magic
1.4 Block diagram
TRANSMITTER SECTION :
RECEIVER SECTION :
2.1 ARM based LPC 2148
The LPC2148 microcontrollers are based on a 32/16 bit ARM7TDMI-S CPU with real-time emulation and embedded trace support, that combines the microcontroller with embedded high speed flash memory ranging from 32 kB to 512 kB. A 128-bit wide memory interface and a unique accelerator architecture enable 32-bit code execution at the maximum clock rate. For critical code size applications, the alternative 16-bit Thumb mode reduces code by more than 30 % with minimal performance penalty. Due to their tiny size and low power consumption, LPC2141/2/4/6/8 are ideal for applications where miniaturization is a key requirement, such as access control and point-of-sale. A blend of serial communications interfaces ranging from a USB 2.0 Full Speed device, multiple UARTS, SPI, SSP to I2Cs and on-chip SRAM of 8 kB up to 40 kB, make these devices very well suited for communication gateways and protocol converters, soft modems, voice recognition and low end imaging, providing both large buffer size and high processing power. Various 32-bit timers, single or dual 10-bit ADC(s), 10-bit DAC, PWM channels and 45 fast GPIO lines with up to nine edge or level sensitive external interrupt pins make these microcontrollers particularly suitable for industrial control and medical systems.
2.1.1 Features of ARM
• 16/32-bit ARM7TDMI-S microcontroller in a tiny LQFP64 package. • 8 to 40 kB of on-chip static RAM and 32 to 512 kB of on-chip flash program memory .128 bit wide interface/accelerator enables high speed 60 MHz operation. • In-System/In-Application Programming (ISP/IAP) via on-chip boot-loader software. Single flash sector or full chip erase in 400 ms and programming of 256 bytes in 1 ms. • Embedded ICE RT and Embedded Trace interfaces offer real-time debugging with the on-chip Real Monitor software and high speed tracing of instruction execution. • USB 2.0 Full Speed compliant Device Controller with 2 kB of endpoint RAM. In addition, the LPC2146/8 provides 8 kB of on-chip RAM accessible to USB by DMA. • One or two (LPC2141/2 vs. LPC2144/6/8) 10-bit A/D converters provide a total of 6/14 analog inputs, with conversion times as low as 2.44 μs per channel. • Single 10-bit D/A converter provide variable analog output. • Two 32-bit timers/external event counters (with four capture and four compare channels each), PWM unit (six outputs) and watchdog. • Low power real-time clock with independent power and dedicated 32 kHz clock input. • Multiple serial interfaces including two UARTs...
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