WIRELESS APPLICATION USING SENSORS IN THE IRRIGATION AREA AUTOMATIC CONTROL SYSTEM
The Project presented here waters
your plants regularly when you are out for vocation. The circuit comprises
sensor parts built using op-amp IC LM324. Op-amp's are configured here as a
comparator. Two stiff copper wires are inserted in the soil to sense the
whether the Soil is wet or dry.
The Microcontroller was used to control the whole system it monitors the sensors and when more than two sensors sense the dry condition then the microcontroller will switch on the motor and it will switch off the motor when all the sensors are in wet. The microcontroller does the above job it receives the signals from the sensors, and this signals operated under the control of software which is stored in ROM.
The Microcontroller was used to control the whole system it monitors the sensors and when more than two sensors sense the dry condition then the microcontroller will switch on the motor and it will switch off the motor when all the sensors are in wet. The microcontroller does the above job it receives the signals from the sensors, and this signals operated under the control of software which is stored in ROM.
The code was written in assembly language and the compiler used to convert the asm code into hex code was cross assembler
PROGRAM:::
;#######################################################################################################################
;#######################################################################################################################
INCLUDE REG_51.PDF
SEN1
EQU P3.0 ; TO FIND WET OR DRY WET=1 DRY=0
SEN2 EQU P3.1
SEN3 EQU
P3.2
SEN4 EQU
P3.3
LOAD
EQU P1.6 ; MOTOR
L11 EQU P1.0
LOAD1 EQU P1.4
L12 EQU P1.2
ORG
0000H
MOV R0,#00H
MOV R1,#00H
;
*******************************************************************
;
THE MAIN PROGRAM STARTS HERE
;
*******************************************************************
MAIN:
SETB SEN1
JB SEN1,D1
JMP W1
D1: INC R0
W1: SETB SEN2
JB SEN2,D2
JMP W2
D2: INC R0
W2: SETB SEN3
JB SEN3,D3
JMP W3
D3: INC R0
W3: SETB SEN4
JB SEN4,D4
JMP W4
D4: INC R0
W4:
CJNE R0,#00H,L1 ; WET=4 DRY=0 (ALL SENSORS ARE WET)
SETB LOAD ;
OFF LOAD
CLR LOAD1
CLR L11
SETB L12
MOV R1,#00H
JMP LAST
L1: CJNE R0,#01H,L2 ; WET=3 DRY=1
CJNE R1,#00H,M1
SETB LOAD ; OFF LOAD
CLR LOAD1
JMP LAST
M1: CLR
LOAD ; ON LOAD
CLR L12
SETB L11
SETB LOAD1
JMP LAST
L2: CJNE R0,#02H,L3 ; WET=2 DRY=2
CLR LOAD ;
ON LOAD
SETB LOAD1
CLR L12
SETB L11
MOV R1,#01H
JMP LAST
L3: CJNE R0,#03H,L4 ; WET=1 DRY=3
CLR LOAD ;
ON LOAD
SETB LOAD1
CLR L12
SETB L11
MOV R1,#01H
JMP LAST
L4: CJNE R0,#04H,LAST ; WET=0 DRY=4 (ALL SENSORS ARE DRY)
CLR LOAD ;
ON LOAD
SETB LOAD1
CLR L12
SETB L11
MOV R1,#01H
JMP LAST
LAST: MOV R0,#00H
JMP MAIN
;
******************************************************************
END
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