專題最終版.doc

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1 The Principle and Application of the Electric Combination Lock

2 The Principle and Application of the Electric Combination Lock

5 Abstract Recently, there are more and more burglaries in the society. It's useless to take any kinds of protections. It makes so much menace to our personal property and security. We also must to carry a string of keys. It's so heavy and inconvenient, and we have to worry about the crisis of losing our keys all the time. And the keyhole could be destroyed. So we design a system of the combination lock and model by the knowledge we learned at school, and we investigate, design, make, and test the system. The research includes the switch of infrared rays, the circuit of stable voltage, the programming and application of the single chip's microcomputer, the keyboard, and the mechanical lock. This project is about electric combination lock with six input passwords. It uses single chip microcomputer to identify and compare the input passwords. When the password is accurate, it makes the system run to act and send out signals by the buzzer, or it does nothing at all. Therefore we can monitor the people into our place. We also can change our password at anytime, so it is not easy to interpolate our passwords. It also raises our system security. When we approach our system, the switch of infrared rays starts to run the system and LCD monitor. In conclusion, this project can be useful for any front door of the buildings or the security system.

6 ...ii... iii Abstract...iv...v...vii... viii MCS UART...11 LCD LCD LCD LCD LCD LCD...15

7 3.2.1 LCD LCD LCD LCD RAM

8 MCS LCD V AC LCD ASCII

9 LCD...15 LCD

11 6 1.3

12 8051 MSC-51 Intel 8051 MSC CPU IC IC 8051AH IC 4Kbyte ROM 128byte RAM2 16 Timer UART 8 I/O PORT 8751AH IC8051AH EPROM 8031AH 8051AH 8031AH Romless type ROM MCS-51 (1) 8 CPU (2) (3) 32 4 Port I/O (4) 128Byte RAM Bytes (5) 16 Timer/Counter (6) UART ( ) (7) (8) 4K (9) (10) 64K (11) 64K

13 (1) 1~8 PORT 1P1.0 - P1.7 a8 I/O 4 LS TTL b l 1 c1 d8052 P1.0 2 T2P1.1 2 " " T2EX

14 (2) 9 RESET H (3) 10~17 PORT 3P3.0 - P K~30K I / O 4 LS TTL (4) 1819 XTAL1XTAL2 12MHz MHz 1MHz~12MHz CLOCK 8051 NMOS AH CMS C5180C (5) 20 Vss (6) 21~28 PORT 2P2.0 - P2.7 a2 8 I/O 4 LS TTL b 16 c8751h 8051H 2 P2.7 (7) 29 PSENprogram store enable 2

15 (8) 30 ALE/PROGaddress latch enable /6 3 ROM/EPROM ALE (9) 31 EA/Vpp 1. ROM 2. a RAM b 0FFFH4K (10)39~32 PORT 0P0.0 - P0.7 a8 OPEN DRAIN I/O b D0-D7 c A0-A7 e I/O f 8 LS TTL g 0 l h 0 i 0 (11)40 Vcc +5V +5V+10%

16 2.2 MCS (1) ROM 0000H~0FFFH 4K EA 8051 CPU (2) RAM128 00H~7FH) H~FFH (3) ROM 64K EA 4KBCPU EA CPU

17 (4) RAM 64K P A0~A7P A8~A15 2 P0 D0~D7 3 (a) ALEALE (b) RDread 8051 (c) WRwrite I/O 32 P0P1P2P3 8 I/O I/O P1 P0 P2 P3 /

18 P3.0 RXD P3.1 TXD P3.2 INT0 P3.3 INT1 P3.4 T 0 / 0 P3.5 T 1 / 1 P3.6 WR ( P3.7 RD TF0 1TF1 RI T I INT INT / TCON IE IP

19 2.2 0 IE0 0003H 0 TF0 000BH 1 IE1 0013H 1 TF1 001BH R1/T1 0023H 2 /T2EX TF2/EXF2 002BH IE0 0 TF0 1 IE1 1 TF1 R1+T1 2 TF2+EXF TIMER Timer0 Timer1Timer0 Timer1 (1) Mode013 (2) Mode116 (3) Mode2 8

20 (4) Mode3Mode3 Timer0 Timer1 Timer0 2 8 TL0 TH0Timer1 Mode Timer2Timer2 3 (1) Auto Reload Mode 16 (2) Capture Mode 16 (3) Baud Rate Generator UART UART 2.7 UART 8051 UART UART CPU UART CPU 8051 SBUF CPU SBUF UART TXD 8051 UART RXD 8 SBUF CPU SBUF SBUF SBUF CPU 8051 UART SCON 8051 UART 9 TB8 RB8 TI RI TI RI

21 CPU 8051 UART UART 2 PC 8051 (1) 8051, SBUF 8051 CPU SBUF Mode 0,Mode 1,Mode 2 Mode 3 Mode Mode 0: RxD TxD Clock 8 bitlsb first baud rate Shift Register I/O Mode 1: RxD TxD 10 bitlsb first Start bit(0) data bit stop bit baud rate

22 RS-232RS-485 Mode 2: RxD TxD 11 bitlsb first Start bit(0) data bit stop bit bit TB8 & RB8 baud rate 1/32 1/64 RS-232RS-485, Data bit parity Mode 3: RxD TxD 11 bitlsb firs t Start bit(0) data bittb8 & RB8 stop bit baud rate RS-232RS-485 Data bit parity (2) Baud rate bit/secuart Baud rate Baud rate UART Baud rate

23 3.1 LCD LCD LCD ASC LCD 3.1 LCD LCD ASCII LCD 1

24 LCD LCD 5V 7~ LCD 3.1 LCD IO 1 GND - 2 Vcc - 5V 3 VL - LCD 4 RS Input 1 IO 0 IO 5 RW Input /1 0 6 E I 7 DB0 IO 8 DB1 IO 9 DB2 IO 10 DB3 IO 11 DB4 IO 12 DB5 IO 13 DB6 IO 14 DB7 IO

25 3.2.2 LCD V LCD 3.2 LCD DB4DB7 4 MPU 2021 MPU DB7 BUSY DB0DB3 4 MPU 2021 MPU 4 E 1 MPU RW 1 MPU 0 1

26 RS 1 MPU 0 1 VL Vo 1 LCD Vcc 1 +5V GND LCD 1LCD a IR DD-RAM CG-RAM b DR DD-RAM CG-RAM RS RW Busy flagdb7 DB0DB

27 2 BFLCD LCD 3 AC DD CG-RAM IR AC IR RAM RAM 4 DD-RAM DD-RAM AC 3.3 MSB LSB AC AC6 AC5 AC4 AC3 AC2 AC1 AC0 3.3 AC DD-RAM ROM CG-ROM CG-ROM

28 6 CG-ROM CG-ROM RS RW DB7 DB6 DB5 DB4 DB3 DB2 DB1 DB H LCD H DD-RAM 0 2 HOME RS RW DB7 DB6 DB5 DB4 DB3 DB2 DB1 DB shift DD-RAM

29 3.5 1writing timing V =5.0V 5%Vss=0Ta=0 o C DD 50 o C 3.6 2read timing V =5.0V 5%Vss=0Ta=0 o C DD 50 o C 3.7

30 min 10 ns 320max 20 ns

31 V 5V V 7805 IC 9V IC +5V 8051 LCD 74LS04 ICULC2003 IC PbSCdS

32 PZTLiTaO InAs InSb PbSnTe HgCdTe PbS CdS CdSe HgCdTe PZT LiTaO 3

33 nm~1.5µm 4.2

34 4.2.2 (1) +4 VDC ~ +12 VDC (2) 0 VDC (3) (4) 50cm (5) (6) +5 VDC 400A (7) 20~ +50 (8) 35mm25mm (9) 12mm KC778B IC

35 4.2.4 (1) OUT 0 VDC (2) OUT (3) 1~

36 5.1 LCD LCD 2 LCD 1 2 ASCII A B C 0 D LCD ASCII 309 LCD ASCII 1 PASS WORD PASS WORD C 4 PASS WORD D

37 RGHT ERROR 4 PASS WORD RAM 130H 31H 32H 33H 34H 35H TABLE 3 30H35H RAM 240H 41H 42H 43H 44H 45H TABLE H39H LCD 30H00H39H 40H45H 5.2

38 IC

39 C 2 PASS WORD PASS WORD RIGHT! 5.5

40 PASS WORD ERROR! IC LCD 5.7

42 5.9

43 8051 EEPROM ULC2003 IC IC

44 [1]. Han-Way Huang, Using the MCS-51 Microcontroller, Oxford, New York, [2].,,,. [3]., 8051,, 86. [4]., IC,, 81. [5].,,, [6]., I,,

45 RS REG P3.5 RS=P3.5 R/W REG P3.6 R/W=P3.6 E REG P3.7 E=P3.7 ORG 00H MOV SP,#70H MOV R7,#00H TABLE3( ) MOV R6,#06 MOV R0,#30H RAM 30H~35H S1: MOV A,R7 TABLE3 ) 1) MOV DPTR,#TABLE3 MOVC A,@A+DPTR MOV INC INC R0 R7 R6,S1 MOV P1,#01H LCD CALL ENABLE MOV P1,#38H LCD DL=1(8 )N=1(2 CALL ENABLE MOV P1,#0FH ON/OFFD=1( ON) CALL ENABLE C=1( ON)B=1( MOV P1,#06H LCD I/D=1( CALL ENABLE MOV P1,#80H LCD CALL MOV CALL ENABLE DPTR,#TABLE1 TABLE1 PASS WORD WRITE1 MOV P1,#8AH ( ) CALL ENABLE START: MOV R4,#06H RAM MOV R0,#40H CLR: INC R0

46 DJNZ R4,CLR MOV R0,#40H RAM 40H~45H L1: MOV R3,#F7H MOV R1,#00H TABLE2( ) L2: MOV A,R3 MOV P2,A MOV A,P2 R4 MOV L3: RLC A R4,A SETB C C=1 MOV R5,#04H JNC KEYIN C=0 INC R1 DJNZ R5,L3 4 MOV A,R3 SETB RRC MOV C A R3,A JC L2 4 JMP L1 KEYIN: MOV R7,#20 10 D2: MOV R6,#248 DJNZ DJNZ R6,$ R7,D2 D3: MOV A,P2 (R4) XRL A,R4 JZ D3 MOV A,R1 TABLE2 MOV DPTR,#TABLE2 MOVC A,@A+DPTR MOV R2,A R2 XRL A,#41H F JZ MOV SET A,R2 XRL A,#42H E JZ MOV CLEAR A,R2

47 XRL A,#43H A JZ MOV DISP A,R2 XRL A,#44H B JZ MOV COMP A,R2 XRL A,#45H C JZ MOV L1 A,R2 XRL A,#46H D JZ L1 MOV A,R2 LCD CALL WRITE2 SUBB A,#30H ASC 30H 40H~45H INC R0 CALL CHECK LCD JMP L1 SET: MOV R6,#06H MOV R0,#40H RAM40H~45H MOV R1,#30H RAM 30H~35H SET1: MOV A,@R0 RAM 40H~45H 30H~35H XCH INC INC DJNZ A,@R1 R0 R1 R6,SET1 JMP CLEAR CLEAR: MOV P1,#8AH LCD CALL MOV ENABLE R1,#06H A2: MOV A,#30H 30H 0 ASC CALL DJNZ WRITE2 R1,A2 MOV P1,#8AH CALL JMP ENABLE START DISP: MOV P1,#8AH 8AH

48 CALL ENABLE MOV R6,#06 6 MOV R0,#30H RAM 30H~35H DISP1: MOV A,@R0 ADD A,#30H ASC CALL WRITE2 INC DJNZ CALL JMP R0 R6,DISP1 DELAY1 CLEAR LCD COMP: MOV R1,#40H RAM 40H~45H MOV R0,#30H RAM 30H~35H MOV R2,#06H 6 COMP1: MOV A,@R1 XRL A,@R0 JNZ ERROR INC INC DJNZ R0 R1 R2,COMP1 CALL RIGHT 6 RIGHT! CLR P0.0 CALL DELAY1 CALL SPACE LCD "RIGHT!" SETB P0.0 JMP CLEAR ERROR: MOV P1,#C0H LCD CALL MOV ENABLE DPTR,#TABLE4 TABLE4 "ERROR!" CALL WRITE1 LCD CALL DELAY1 CALL SPACE LCD "ERROR!" JMP CLEAR LCD "000000" RIGHT: MOV P1,#C0H LCD CALL MOV ENABLE DPTR,#TABLE5 TABLE5 RIGHT! CALL WRITE1 RET SPACE: MOV P1,#C0H LCD

49 CALL ENABLE MOV DPTR,#TABLE6 TABLE6 CALL WRITE1 LCD 6 RET CHECK: MOV P1,#FFH P1=FFH CLR RS RS=0R/W=1 LCD SETB CLR E NOP SETB R/W E JB P1.7,CHECK LCD DB=BUSY FLAG=0 MOV A,P1 LCD ANL A,#7FH 7 CJNE A,#10H,A3 MOV P1,#8AH 8AH CALL A3: RET ENABLE MOV R0,#40H (40H) ENABLE: CLR RS RS=0R/W=0 CLR CLR CALL SETB RET R/W E DELAY E WRITE1 MOV R1,#00H A1: MOV A,R1 MOVC A,@A+DPTR CALL INC R1 WRITE2 DPTR CJNE A,#FEH,A1 FFH RET WRITE2: MOV P1,A LCD SETB RS RS=1R/W=0 CLR CLR CALL SETB RET R/W E DELAY E

50 DELAY: MOV R4,#05 D6: MOV R5,#FFH DJNZ DJNZ RET R5,$ R4,D6 DELAY1: MOV R5,#20 D5: MOV R6,#200 D4: MOV R7,#248 TABLE1: DJNZ DJNZ DJNZ RET R7,$ R6,D4 R5,D5 DB 'PASS WORD000000',FEH TABLE2: DB 31H,32H,33H,43H ASCII TABLE3: TABLE4: TABLE5: DB 34H,35H,36H,44H DB 37H,38H,39H,45H DB 41H,30H,42H,46H DB 02H,02H,01H,05H,08H,02H DB 'ERROR!',FEH DB 'RIGHT!',FEH TABLE6: DB ' ',FEH END

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