sravan morning ppt

8/13/2019 Sravan Morning Ppt

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Under the guidance ofMrs.Ch.Sridevi , M.Tech., MIETE., MISTE

Associate Professor , Dept. of ECE

Presented bySravan Kumar Gunturi

10221D5512

Bonam Venkata ChalamayyaEngineering College, Odalarevu


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INTRODUCTION

EMBEDDED HARDWARE

SOFTWARE IMPLEMENTATION

RESULTS

CONCLUSION FUTURE SCOPE


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Mine security system detects: potential accidents

strengthens early warnings

improves the efficiency of rescuing

Deficiencies of the existing equipment high power consumption

poor signal quality

short transmission distance


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Salient features of the proposed mine security system :

o ARM9 S3C2440

o Sensor Controlling Board

o Sensors

o USB Camera

o LCD

o Ethernet


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BLOCK DIAGRAMOFPROPOSED SYSTEM


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Snap shot of External Hardware


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The System is mainly composed of ARM9 board S3C2440,sensor controlling board which controls sensors like LDR,

gas sensor and temperature sensor.

The sensor board is interfaced to ARM board by RS232

serial port.

Here the RS-232 unit is used to access the sensors data by

ARM9 board.

Sensors used for monitoring different conditions are

temperature sensor, LDR and gas sensors.


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The monitored conditions are sent to ARM9 board throughserial communication and they are displayed on PC using

Ethernet.

The data can be viewed on any remote PC which is interfacedto LAN network.

The regulated power supply function is to supply external

12V intrinsic safety power and system board power.

The Ethernet module is used to complete transmission of

video information and sensors information.


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The proposed system uses Samsung S3C2440 ARM9 familyas processor which has operating frequency up to 400 MHz


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ARM9 S3C2440 processor is a 32-bit RISC CPU designed

by ARM.

It uses Harvard architecture with separate instruction

and data buses.

The S3C2440 is developed with ARM920T core, 0.13um

CMOS standard cells and a memory complier.

It adopts a new bus architecture known as Advanced

Micro controller Bus Architecture(AMBA)


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Lower overheating than ARM7

Improved Clock frequency [400Mhz]

Five stage Pipelining. "Enhanced DSP" instructions incorporated in cores.

for example: multiply and accumulate


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On board 64MB SDRAM.

32 bit data bus.

Onboard 64MB Non-Volatile NAND flash memory.

2MB NOR flash memory.

3 serial ports.

One USB host.

One SD-CARD interface.

One stereo audio output interface.


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One stereo audio output interface

4 user LEDs & 6 user buttons

One PWM control buzzer

One 20pin camera interface

RTC battery on board

Power supply interface, with switch and indicator

One 20pin camera interface


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Atmel 8 bit controller is used as the master chip of the sensor

extension board.

It is connected to various types of sensors to constitute a

sensor network.

This network collects environmental data and transmits them

to the ARM Intelligent Monitoring Centre through serial ports.

The sensor network includes:

LM35temperature sensor, Gas sensor

Light Dependent resistor sensor (LDR)


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Temperature Sensor:

LM35 is used as a temperature sensor.

When temperature increases, the voltage across a diode

increases at a known rate. Sensors use this technique to

determine the temperature rise.

Important characteristic of the LM35DZ is that it draws

only 60 micro amps from its supply and possesses a low

self-heating capability.


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Light sensor:light dependent resistor(LDR) is a type of semiconductor

and its conductivity changes with proportional change in

the intensity of light.

when light is incident on it, a photon is absorbed and

thereby it excites an electron from valence band into

conduction band. Due to such new electrons coming up in

conduction band area, the electrical resistance of the

device decreases.


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A webcam is a video camera that feeds its images in real timeto a computer or computer network, often via USB, Ethernet,or Wi-Fi

Webcams typically include a lens, an image sensor which arecan be CMOS or CCD

Each frame is transmitted uncompressed in RGB or YUV orcompressed as JPEG.

The USB video device class specification allows forinterconnectivity of webcams to computers


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Camera to display a preview of the current acquisition

image.

The system uses Samsung's 320 240 pixel LCD screen,

the size of 106.68 cm.

The depth of each pixel LCD screen is 2 bit, using RGB565

color space.


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Ethernet is a family of computer networking technologies

for local area networks (LANs).

Systems communicating over Ethernet divide a stream of

data into individual packets called frames.

Each frame contains source and destination addresses and

error-checking data.

Damaged data can be detected and re-transmitted.


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Linux 2.4 kernel operating system is used.

The kernel is a program that constitutes the central core of

a computer operating system. It has complete control over

everything that occurs in the system.

The embedded Linux operating system consists of

following:

Device drivers Linux kernel

File system


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The application program includes video acquisitionmodule, sensors module and transmission module.


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Multitasking

Multiuser

Multiplatform

Multithreading

Crash proof

Free and Open source code for all


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After the switching on the kit, the web camera will startthe capturing and the captured video is being processedby S3C2440board

The sensor controlling board gives the environmentalparameters like temperature, light, smoke values to themonitoring center.

Here a remote PC is used in the network which monitors

video and sensor parameters and from that web pagevarious devices in the mine (like fan in our proposedsystem) can be controlled.


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Snapshot of Result in Remote PC


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Comprehensive monitoring equipment in mine.

Can quickly complete video codec and achieve high image

quality through the hardware.

Low power consumption and small volume.

Coincident with the requirement of intrinsic safety.

Larger area and more depth inside hazardous underground

mines are now can be covered and potential accidents can be

controlled effectively.


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Wireless communication interface can be used between the

system and monitoring center.

More number of sensors can be interfaced.Controlling levels of the mine security system can be

increased.


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A Traditional mine security system can be effectively replaced

by the surveillance and safety system proposed in the paper.

This system related to safety and security of underground

mines.The system is reliable, faithful, uninterrupted, economical

and user friendly.

Proper monitoring and guiding is possible between theworkers and the ground staff which can help to take

appropriate actions more rapidly and smartly.

sravan morning ppt

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