課程設(shè)計(jì)論文-基于單片機(jī)的里程表設(shè)計(jì)-資料下載頁(yè)
2025-11-07 17:28本頁(yè)面
【導(dǎo)讀】霍爾傳感器將到來(lái)的。電動(dòng)自行車(chē)的里程數(shù)據(jù)能直觀的顯示給使用者。測(cè)量自行車(chē)行駛距離的儀表。它分為電源、霍爾傳感器和顯示器3部分。針對(duì)這種情況，研制新型的數(shù)字化里程表用于自。行車(chē)上是非常必要的。高可靠性、高效率的自行車(chē)?yán)锍瘫淼脑O(shè)計(jì)，并且使用方便。精度盡可能高、體積盡可能小，成本盡可能低，功耗盡可能低、功能盡可能豐富。能夠記錄最高及平均速度；假設(shè)車(chē)輪周長(zhǎng)為c，則。光電傳感器是采用光電元件作為檢測(cè)元件的傳感器。紅外對(duì)管的優(yōu)點(diǎn)是測(cè)量精度高，缺點(diǎn)是安裝比較復(fù)。雜和容易受外來(lái)光線(xiàn)、灰塵等的影響。霍爾傳感器是利用霍爾效應(yīng)把磁輸入信號(hào)轉(zhuǎn)換成電。把開(kāi)關(guān)型霍爾傳感器安裝在自行車(chē)貼近車(chē)輪的支架上，磁。動(dòng)的低電平，單片機(jī)根據(jù)此信號(hào)可計(jì)算里程、速度等。點(diǎn)是穩(wěn)定和安裝簡(jiǎn)易，缺點(diǎn)是成本較高。干簧管是一種磁敏的有觸點(diǎn)無(wú)源電子開(kāi)關(guān)元件，應(yīng)用在里程表
【正文】 ACALL DELAY1 MOV A,3AH ACALL WRITE ACALL DELAY1 MOV A,SJ1 MOVC A,@A+DPTR ACALL WRITE ACALL DELAY1 MOV A,SJ2 MOVC A,@A+DPTR ACALL WRITE ACALL DELAY1 MOV A,3AH ACALL WRITE ACALL DELAY1 MOV A,SJ3 MOVC A,@A+DPTR ACALL WRITE ACALL DELAY1 MOV A,SJ4 MOVC A,@A+DPTR ACALL WRITE ACALL DELAY1 MOV A,3AH ACALL WRITE ACALL DELAY1 MOV A,SJ5 MOVC A,@A+DPTR ACALL WRITE ACALL DELAY1 MOV A,SJ6 MOVC A,@A+DPTR ACALL WRITE ACALL DELAY1 MOV A,20H ACALL WRITE ACALL DELAY1 MOV A,20H ACALL WRITE ACALL DELAY1 MOV A,20H ACALL WRITE ACALL DELAY1 MOV A,20H ACALL WRITE ACALL DELAY1 MOV A,20H ACALL WRITE ACALL DELAY1 MOV A,20H ACALL WRITE ACALL DELAY1 RET CHUSHI:CLR 。初始化子程序，用來(lái)發(fā)生指令和地址的 CLR CLR ACALL DELAY1 ACALL DELAY1 MOV P0,A MOV R0,20H YH:ACALL DELAY1 DJNZ R0,YH SETB MOV R0,20H YH1:ACALL DELAY1 DJNZ R0,YH1 CLR RET ZT:CLR 。判定 D7狀態(tài)的子程序 SETB SETB ACALL DELAY1 WAIT:JB ,WAIT ACALL DELAY1 RET WRITE:SETB 。； 。發(fā)送數(shù)據(jù)的子程序 CLR CLR ACALL DELAY1 ACALL DELAY1 MOV P0,A MOV R1 ,20H YH2:ACALL DELAY1 DJNZ R1, YH2 setb MOV R1 ,20H YH3:ACALL DELAY1 DJNZ R1, YH3 CLR RET DELAY1: MOV R7,14H。延時(shí) DEL1:MOV R6,64H DEL2:DJNZ R6, DEL2 DJNZ R7,DEL1 RET CAIDAN2:JB ,B0 LCALL DELAY5MS JB ,K3 LJMP MAIN2 K3:LJMP CAIDAN2 B0:JB ,CAIDAN2 LCALL DELAY5MS JB ,CAIDAN2 JIA:INC 21H X1:LCALL JUDG40 JNB ,X1 JB ,B1 LCALL DELAY5MS JB ,B1 X2: LCALL JUDG30 JNB ,X2 LJMP JS2 B1:JB ,B2 LCALL DELAY5MS JB ,K5 LJMP JIA K5:JB ,B2 LCALL DELAY5MS JB ,B1 X3:LCALL JUDG30 JNB ,X3 LJMP JS2 B2:JNB ,B20 LJMP B1 B20:LCALL DELAY5MS JB ,B1 MOV R5,21H CJNE R5,00H,JIAND LJMP JS2 JIAND:DEC 21H X4:LCALL JUDG50 JB ,X4 JNB ,B1 LCALL DELAY5MS X5:JB ,B1 LCALL JUDG30 JNB ,X5 JS2:MOV A,21H MOV B,03H DIV AB MOV A,B CJNE A,00H,JX21 LCALL MAIN4 LJMP CAIDAN2 JX21:CJNE A,01H,JX22 LCALL MAIN2 LJMP CAIDAN2 JX22:CJNE A,02H,WAN LCALL MAIN3 WAN:LJMP CAIDAN2 ZD0:。計(jì)算位移 MOV A,ZC1 MOV B,03H DIV AB MOV SS1,A MOV A,B SWAP A ORL A,ZC2 MOV B,03H DIV AB MOV SS2,A MOV A,B SWAP A ORL A,ZC3 MOV B,03h DIV AB MOV SS3,A MOV A,B SWAP A ORL A,ZC4 MOV B,03H DIV AB MOV SS4,A MOV A,54H 。中斷 0 JNZ OPP LJMP BEGIN OPP:MOV 54H,00H MOV B,20H MUL AB MOV SJ,A 。存時(shí)間 MOV B,A MOV A,SS1 。計(jì)算速度 DIV AB MOV SD1,A MOV A,B SWAP A ORL A,SS2 MOV B,SJ DIV AB MOV SD2,A MOV A,B SWAP A ORL A,SS3 MOV B,SJ DIV AB MOV SD3,A CHAO:MOV A,SD1 。是否超速 CJNE A,BJ1,XY0 MOV A,SD2 CJNE A,BJ2,XY0 MOV A,SD3 CJNE A,BJ3,XY0 AJMP BJB 。報(bào)警吧 XY0:JNC BJB AJMP BJD BJB:SETB MOV R6,0AH XIANG:MOV R7,0FFH BU:LCALL DELAY5MS DJNZ R7,BU JB ,MING LCALL DELAY5MS JB ,MING AJMP GUAN 。手動(dòng)關(guān)報(bào)警蜂鳴 MING:SETB BU1:LCALL DELAY5MS DJNZ R7,BU1 CLR DJNZ R6,XIANG LJMP BJD GUAN:CLR LCALL JUDG60 JNB ,GUAN BJD:MOV A,SD1 。比較最大速度 CJNE A,ZDSD1,XY1 MOV A,SD2 CJNE A,ZDSD2,XY1 MOV A,SD3 CJNE A,ZDSD3,XY1 AJMP JS XY1:JC JS 。計(jì)算平均速度 MOV ZDSD1,SD1 MOV ZDSD2,SD2 MOV ZDSD3,SD3 AJMP JS JS:MOV A,SD1 。計(jì)算平均速度 ADD A,PJSD1 MOV B,02H DIV AB MOV PJSD1,A MOV A,B ORL A,SD2 ADD A,PJSD2 MOV B,02H DIV AB MOV PJSD2,A MOV A,B ORL A,SD3 ADD A,PJSD3 MOV B,02H DIV AB MOV PJSD3,A BEGIN:SETB TR0 RETI JUDG31:JB ,JUDG31 LCALL DELAY5MS RET JUDG30:JNB ,JUDG30 LCALL DELAY5MS RET JUDG40:JNB ,JUDG40 LCALL DELAY5MS RET JUDG50:JNB ,JUDG50 LCALL DELAY5MS RET JUDG60:JNB ,JUDG60 LCALL DELAY5MS RET DELAY5MS:MOV 42H,19H Y1:MOV 43H,63H Y2:DJNZ 43H,Y2 DJNZ 42H,Y1 RET TABLE:DB 30H,31H,32H,33H,34H,35H,36H,37H,38H,39H END 附錄 2 元器件清單 名稱(chēng) 型號(hào) 數(shù)量 電阻 100 2 1K 11 10K 2 電容 10uf 2 470uf 1 30pf 2 LED 數(shù)碼管 共陰極 6 晶振 12MHz 1 7407 8 AT89S52 1 三極管 NPN 1 霍爾傳感器 1
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