NANDHA 1

Done by : E. NandakumarDone in : Electronic system division,

BHEL, BANGANLORE.Xternal Guide : Mr.Joseph Ananda kumar

sr.eng,boiler control dept.,Internal Giude: Mr.s.ackvinos antony durai

NANDHA 2

OBJECTIVE

REMOTE SENGING OF PROHIBITED AREA

EARTH QUAKE. MINES.

DEMO FOR UNMANNED VEHICLE.

NANDHA 3

INTRODUCTION

PREVIEW ON INACCESSIABLE AREA, SO THAT RESCUING OPERATION CAN BE PRECISELY.TELE-VISUALIZED PREVIEW

GUARDED

UNGUARDED

NANDHA 4

PC CPU

TONE GENERATOR FM-TX

COMMANDER SECTION

NANDHA 5

PC CPU

TONE GENERATOR FM-TX

COMMANDER SECTION*** ** ** ** ** * * ** * * ** ** ** **

D7D6D5D4D3D2D1D0

NANDHA 6

PC CPU

TONE GENERATOR FM-TX

COMMANDER SECTION

Tone generator

D7(C1)D6(C2)D5(C3)D4(C4)D3(R1)D2(R2)D1(R3)D0(R4)

+5v

3.5Mhz

GND

1 15 7

8

16

6

3

5

4

914

13

12

11

1 2 3 A

4 5 6 B

7 8 9 C

* 0 # D

NANDHA 7

TONE DECODERFM-RX

RECEIVER SECTION

c

DRIVER

NANDHA 8

TONE DECODER

FM-RX

RECEIVER SECTION

c

DRIVER

TONEDECODER

STDD0D1D2D3

101817 16

1511121314

5 6 9

14

2

7

8

+5V

3.5Mhz

.01f

300K

NANDHA 9

H/W PARTS PC-llel PORT-DB25 PIN CONNECTOR. DTMF TONE GENERTOR-5089. DTMF TONE DECODER-MT8870. MICRO CONTROLLER-ATMEL 89C51. DRIVER ULN2803. STEPPER MOTOR.

S/W PARTS “C” LANGUAGE. ASSEMBLE LANGUAGE.

NANDHA 10

S/w ‘c’ language

START

INIT C

RDKBD C=ASCII

IFC==DATA1

RIGHT ROTATE VALUE OUTTED

IFC==DATA2

LEFT ROTETA VALUE OUTTED

A

A

NO

S

NO

S

NANDHA 11

S/w ASSEMBLE language

START

INIT REG

GET PORT3

IFA==DATA1

MOTOR ROTATE RIGHT

IFA==DATA2

MOTOR ROTATE LEFT

A

A

NO

NO

S

S

NANDHA 12

MECH IDEAS

BACK WHEEL

FRONT WHEEL

NANDHA 13

PCB Layout

NANDHA 14

RESULT & DISCUSSION

Switch keying method.

This is one of the easiest way in llel

wireless comm.