The design and Implementation of a Light-controlled Car
D9872259
D9872601
D9872229
D9872530
8051
ADC
IC
Keil
8051
Abstract
The main purpose of this project is to design and implement an
activated motor car which can track the lighting source the activated
motor car is basically based on a microcontroller ,8051,and it consist of
motor drive ,A/D conventers,photoresistors and a DC motor.The
software program is writted in C language under the Keil C
development environment.
The design of light source tracking can be applied to direction
control of solar photovoltaic panel ,furthen,the missile tracking
system.Finally.the results demonstrate the design of the whole system.
... 1
... 4
... 6
2-1
... 7
2-2 PWM
... 7
2-3
... 11
2-4
... 11
2-5
-
... 14
... 17
... 18
... 20
... 21
... 22
... 23
... 25
... 25
... 26
(
)
(
)
1.
(
)2.
3.
4.
(
)5.
(4WD 2WD
)
20
35,40,72MHZ
2.4GHZ
2.1
(1)AT89S52 (2)ADC0804 (3)
(4)370
(5)
(6)
(7)
(8)
12MHz(9)
(10)74244
2-1
0
255
8051
5
2.2
9
1
bit
32
2.1
9
2-2 PWM
?
2.2
2.1
Case P1.4~P1.0
case P1.4~P1.0
case P1.4~P1.0
0
00000
4
11
01011
7
22 10110
5
1
00001
8
12
01100
3
23 10111
6
2
00010
6
13
01101
3
24 11000
1
3
00011
7
14
01110
4
25 11001
1
4
00100
4
15
01111
5
26 11010
2
5
00101
6
16
10000
0
27 11011
4
6
00110
5
17
10001
4
28 11100
2
7
00111
6
18
10010
3
29 11101
2
8
01000
2
19
10011
7
30 11110
3
9
01001
5
20
10100
2
31 11111
4
10
01010
4
21
10101
4
2.3
2.4
J-TPSG90
:1.6kg/cm
:9g
:0.12sec/60degree(4.8v)
:23.0*12.5*30.0mm
:4.8-6.0V
Temperature range >> 0
--55
Dead band width 20us
1ms
2ms
50
IC
1.5ms
2-3
:
50
1ms
2ms
2.5
2.5
2-4
:
50
1ms
2ms
2.6
2.6
PWM
8051
duty cycle
70%
duty cycle
70%
duty cycle
2.7
2-5
8051
8051
8051
PWM
8051
0.5A
2.8
2.8
2-5
-2.9
INT0
INT1
TIMER0
TIMER1
PWM
2.10
2.11
2.10
0
2.11
1
INT2
TIMER2
20ms
PWM
2.12
20ms
INT0
INT1
:
1.
Keil C
PWM
4.1
4.2
4.1 PWM
4.3
1.Layout
,
IC
2.
8051
8051
3.
4.
Layout
Layout
2011/5/9-2011/6/13
5 8 9 10 11 12 13 14
15 16 17 18 19 20 21
22 23 24 25 26 27 28
Layout
Layout
Layout
29 30 31 6 1 2 3 4
5 6 7 8 9 10 11
PWM
layout
gnd U1 8051 PSEN 29 ALE 30 VCC 40 EA 31 X1 19 X2 18 RST 9 P0.0/AD0 39 P0.1/AD1 38 P0.2/AD2 37 P0.3/AD3 36 P0.4/AD4 35 P0.5/AD5 34 P0.6/AD6 33 P0.7/AD7 32 P1.0 1 P1.1 2 P1.2 3 P1.3 4 P1.4 5 P1.5 6 P1.6 7 P1.7 8 P2.0/A8 21 P2.1/A9 22 P2.2/A10 23 P2.3/A11 24 P2.4/A12 25 P2.5/A13 26 P2.6/A14 27 P2.7/A15 28 P3.0/RXD 10 P3.1/TXD 11 P3.2/INT0 12 P3.3/INT1 13 P3.4/T0 14 P3.5/T1 15 P3.6/WR 16 P3.7/RD 17 U2 ADC0804 +IN 6 -IN 7 VREF/2 9 DB7 11 DB6 12 DB5 13 DB4 14 DB3 15 DB2 16 DB1 17 DB0 18 CLKR 19 VCC/VREF 20 CLKIN 4 INTR 5 CS 1 RD 2 WR 3 MG1 MOTOR AC 1 2 5v C1 150pf servo U3 serv o U4speed controller 5v 5v R2 10k C3 0.1uf Y1 CRYSTAL R14 10k R15 10k 5v C4 30pf C5 30pf R4 10k 5v R5 10k 5v R6 10k 5v 5v R8 10k 5v U5 74LS244 A1 2 A2 4 A3 6 A4 8 1OE 1 Y1 18 Y2 16 Y3 14 Y4 12 A5 11 A6 13 A7 15 A8 17 Y5 9 Y6 7 Y7 5 Y8 3 2OE 19 R7 10k C2 10uf R1 10k R10 10k R11 10k R12 10k R13 10k R9 10k 5v
