Min Slides rovbotcs

7/29/2019 Min Slides rovbotcs

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Target Estimation for a Mine Detector with WirelessImage and Sound Transmission For Robot


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ROBOT

A Robot is a mechatronic device which also includes resourcefulness or autonomy.

A device with autonomy does its thing "on its own" without a human directly guiding it moment-

by-moment.


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EMBEDDED SYSTEM

An Embedded System is a combination of computer hardware and software


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MICROCONTROLLERS

Microprocessors and microcontrollers are widely used in embedded systems products.

Microcontroller is a programmable device.

A microcontroller has a CPU in addition to a fixed amount of RAM, ROM, I/O ports and

a timer embedded all on a single chip

8051 is an 8-bit processor, meaning that the CPU can work on only 8 bits of data at atime

The microcontroller used in this project is AT89S8252. Atmel Corporation introduced

this 89C51 microcontroller.


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FEATURES OF AT89S52

1. 8K Bytes of In-System Reprogrammable Downloadable Flash Memory

2. 2K Bytes EEPROM Endurance: 100,000 Write/Erase Cycles

3. 4V to 6V Operating Range

4. Fully Static Operation: 0 Hz to 24 MHz

5. Three-level Program Memory Lock6. 256 x 8-bit Internal RAM

7. 32 Programmable I/O Lines

8. Three 16-bit Timer/Counters

9. Nine Interrupt Sources

10. SPI Serial Interface

11. Programmable UART Serial Channel

12. Interrupt Recovery from Power-down

13. Dual Data Pointer

14. Power-off Flag


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PORTS

The four ports P0, P1, P2 and P3 each use 8 pins, making them 8-bit ports.

All the ports upon RESET are configured as input, since P0-P3 have value FFH on them.

Port 0 is also designated as AD0-AD7, allowing it to be used for both address and data.

Port 1 is an 8-bit bi-directional I/O port with internal pull-ups.

With no external memory connection, P2 are used as simple I/O.

Port 3 is an 8-bit bi-directional I/O port with internal pull-ups.


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COMPONENTS

RESISTOR

CAPACITOR

DIODES

BUZZER LIGHT-EMITTING DIODE

SWITCHES & PUSHBUTTONS


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RF CONTROLLER RF Advantages:

No line of sight is needed.

Not blocked by common materials: It can penetrate most solids and passthrough walls.

Longer range. It is not sensitive to the light;.

It is not much sensitive to the environmental changes and weatherconditions.


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RF TRANSMITTER RF TRANSMITTER STT-433MHz


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RF RECEIVER STR-433 MHz:


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POWER SUPPLY

RegulatorFilterBridgeRectifier

Step downtransformer

230V AC50Hz D.C

Output

BLOCK DESCRIPTION


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MINE DETECTION The first devices designed to explode on target contact were floating mines first

employed by the US confederate Navy in 1861.

Reference was made to these mines during the Battle of Williamsburg in 1862.

The British Army was interested to use landmines during there African campaigns in

the 1880s.

On May 4th 1862 while scouting a road, a horse rider activated one of these mines

becoming the first person killed by a pressure-operated landmine.


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NEW TYPES OF LANDMINES

Anti-Tamper landmines:

New landmines are designed with mechanisms in place to detonate if they aremoved, altered or attempts to defuse them are made.

Anti-Detection landmines:

New landmines have also been fitted with electronic devices to detect the presenceof magnetic fields and other associated detection fields. If detected they maydetonate in order to not be disarmed.


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CURRENT LANDMINE DETECTING

TECHNIQUES

Manual DE-mining

Biochemical Dog Detection

Metal Detectors

Ground Peneration Radar Detection

Acoustical Detection


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PRINCIPLE OF METAL DETECTION

Magnetic Flux Magnetic Fields


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Faradays law


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Pulse Induction Technology

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