基于51單片機壓力檢測系統(tǒng)設(shè)計

#頁共61頁致謝本次設(shè)計是在導(dǎo)師xxx老師的悉心指導(dǎo)下完成的?；叵氪蠖W(xué)習(xí)高頻電子技術(shù)，xx老師的兢兢業(yè)業(yè)，認真負責一直感染著我。在畢業(yè)設(shè)計開始階段，xx老師對我的學(xué)習(xí)，設(shè)計實施選擇創(chuàng)造了許多有利條件，在方案設(shè)計中也給了我很多的建議和靈感。當我畏難時，xx老師一直鼓勵著我，才能令我將畢設(shè)功能完整的實現(xiàn)。xx老師他嚴謹細致的工作作風(fēng)、寬以待人的高尚品質(zhì)和諄諄教誨使我終身難忘。也感謝四年來對我傳業(yè)解惑，育我成材的各位老師，感謝你們的辛勞與無私。在此，向這些為學(xué)生成長付出大量心血的導(dǎo)師表示衷心的感謝！還要感謝在設(shè)計過程中幫助過我的所有同學(xué)和朋友們。在學(xué)習(xí)中我們互相幫助，互相鼓勵，使我能夠順利的完成我的學(xué)業(yè)。是你們的幫助使我發(fā)現(xiàn)設(shè)計上的誤區(qū)，使我能及時的發(fā)現(xiàn)問題把設(shè)計順利的進行下去；是你們的監(jiān)督使我在設(shè)計過程中按時完成既定任務(wù)。本次設(shè)計尤其要感謝班上的蔡濤同學(xué)，在我軟件設(shè)計上給了我很大的幫助，幫我解決了很多問題。沒有你們的幫助我不可能這樣順利地結(jié)稿。感謝陪伴我四年的同學(xué)，讓我四年的大學(xué)生活充滿精彩，在此，請接受我真誠的謝意。最后，我還要特別感謝我的家人，正是他們的支持和教育讓我有機會坐在大學(xué)的課堂里，完成本科四年的學(xué)習(xí)。感謝母校xx大學(xué)給了我走入社會的資本和心理準備，讓我終生受益。

附錄A附：電路總原理圖3∕n∣wιlt*kpr4<J??tι"k,*rnΓ,∣,Γ"r*,PrrnΓ,“r,^,r?',r,^,vs?RΛY-Rs9do^s?^--9.R『邑1<~.?c?tmFgcw^c^w^rs.EW-t.5swg二w，(寫s?S^^?‰^-AR.g??-。玄Γ<.E?thNH2QU^sBκ^,θn?osSΛ^S-^h2Y豆w)r.-ft『國豆BM-t.κ亙MXΠOAδΛ#uftHeA^S^^E?lftI??EMmiku*oxi?t?8?^iW出世樂0v肯8ai?αα?Y3SVBBω>-?-穹附錄B附：系統(tǒng)主程序//定義標識volatilebitFlagTest=0; //定時測試標志，每0.5秒置位，測完清0volatilebitFlagKeyPress=0;//有鍵按下標志，處理完畢清0volatilebitFlagSetPrice=0;//價格設(shè)置狀態(tài)標志，設(shè)置好為1。//顯示用變量intCounter=0;unsignedlongidatalimit=9999;//閾值設(shè)置unsignedcharidatalocal[4]={68,84,92,100};unsignedcharidatalocal_index=0;//稱重用變量unsignedlongidataFullScale;//滿量程A/D值/1000//歷史記錄unsignedlongidatahistory[8]={0};intidatahisCount=0;voidmain(void){Rom_CS=1;initial_lcd();EA=0;beep=1;alert=1;Timer0_Init();//初始化完成，開中斷EA=1;//背光LedA=1;clear_screen();//clearalldots壓力檢測系統(tǒng)loA/Ding...To_Zero();delay(120);funcList();}//整型轉(zhuǎn)字符串的函數(shù)，轉(zhuǎn)換范圍0--65536voidint2str(intx,char*str){inti=1;inttmp=10;while(x/tmp!=0){i++;tmp*=10;}tmp=x;while(i>1){str[--i]='0'+(tmp%10);tmp/=10;}str[0]=tmp+'0';}//重新找回零點，每次測量前調(diào)用voidTo_Zero(){FullScale=ReA/DCount()/1000;}//顯示重量，單位kg，兩位整數(shù)，三位小數(shù)voiddisplayPress(unsignedlongweight,unsignedcharlineNum){unsignedinti,j;//weight單位是gi=weight/1000; //得到整數(shù)部分j=weight-i*1000;//得到小數(shù)部分memset(str1,0,6);int2str(i,str1);if(i>=10){display_GB2312_string(lineNum,60,str1);}else{display_GB2312_string(lineNum,68,str1);}memset(str1,0,6);int2str(j,str1);if(j<10){display_GB2312_string(lineNum,100,str1);}elseif(j<100){display_GB2312_string(lineNum,92,str1);}else{display_GB2312_string(lineNum,84,str1);}}//定時器0初始化voidTimer0_Init(){ET0=1; //允許定時器0中斷TMOD=1; //定時器工作方式選擇TL0=0x06;TH0=0xf8; //定時器賦予初值TR0=1; //啟動定時器}//定時器0中斷voidTimer0_ISR(void)interrupt1using0{TL0=0x06;TH0=0xf8; //定時器賦予初值//每0.5秒鐘刷新重量Counter++;if(Counter>=400){FlagTest=1;Counter=0;}}voidfuncList(){unsignedlongpress=0;unsignedcharkeyValue=0;unsignedcharflag=0;interface();while(1){if(FlagTest==1){//To_Zero();press=getPress();if(press>limit){beep=0;alert=0;}else{beep=1;alert=1;

}displayPress(press,1);}if(beep==1){keyValue=Getkeyboard();if(FlagKeyPress==0){FlagKeyPress=1;switch(keyValue){save(press);break;clear();

break;To_Zero();break;setLimit();clear_screen();interface();break;查詢歷史數(shù)據(jù)

數(shù)據(jù)統(tǒng)計分析查詢歷史數(shù)據(jù)查詢歷史數(shù)據(jù)

數(shù)據(jù)統(tǒng)計分析查詢歷史數(shù)據(jù)

數(shù)據(jù)統(tǒng)計分析flag=0;break;flag=1;break;case12:if(flag==0)checkHistory();elseanalysis();flag=0;clear_screen();interface();break;default:break;}FlagKeyPress=0;}delay(20);}}}voidinterface(){壓力:閾值:displayPress(limit,3);查詢歷史數(shù)據(jù)數(shù)據(jù)統(tǒng)計分析}unsignedlonggetPress(){unsignedlongweight=0;unsignedlongA/Dval=0;//稱重,得到重量值weight,單位為gA/Dval=ReA/DCount();weight=FullScale-A/Dval/1000;if(weight>0x8000)weight=0;weight=10000*weight/FullScale;weight=weight*RATIO;returnweight;}voidcheckHistory(){unsignedcharkeyValue=99;clear_screen();if(hisCount==0){當前無任何

歷史數(shù)據(jù)按return鍵返回while(1){keyValue=Getkeyboard();if(keyValue==8)break;delay(20);}}else{if(hisCount<=4){firstPage();while(1){keyValue=Getkeyboard();if(keyValue==8)break;delay(20);}}elseif(hisCount>4){firstPage();while(1){keyValue=Getkeyboard();if(keyValue==8)break;elseif(keyValue==10)secondPage();elseif(keyValue==6)firstPage();}}}return;}voidfirstPage(){chari;clear_screen();for(i=1;i<=hisCount;i++){memset(str1,0,6);int2str(i,str1);display_GB2312_string(i%5*2-1,17,str1);displayPress(history[i-1],i%5*2-1);if(i==4)break;}return;}voidsecondPage(){chari;clear_screen();for(i=5;i<=hisCount;i++){memset(str1,0,6);int2str(i,str1);display_GB2312_string((i-4)%5*2-1,17,str1);displayPress(history[i-1],(i-4)%5*2-1);}return;}voidanalysis(){unsignedcharkeyValue=0;unsignedlongidatatemp[9];intidatanum_num[4];intidatanum_index[4];inti,j,k,a,b;intidatazhongwei,junzhi,zhongshu;memset(temp,0,9);memset(num_index,0,4);zhongwei=0;junzhi=0;zhongshu=0;for(i=0;i<hisCount;i++)temp[i]=history[i];for(i=0;i<4;i++)num_num[i]=1;//排序--獲得最大值，最小值if(hisCount>1){for(i=0;i<hisCount-1;i++){for(j=0;j<hisCount-1-i;j++){if(temp[j]>=temp[j+1]){temp[8]=temp[j];temp[j]=temp[j+1];temp[j+1]=temp[8];}}}}//均值for(i=0;i<hisCount;i++){//temp[8]+=temp[i]/hisCount;junzhi+=(int)temp[i];}if(hisCount!=0)junzhi=junzhi/hisCount;//中位數(shù)if(hisCount!=0){if(hisCount%2==1){zhongwei=(int)temp[hisCount/2];}else{a=(int)temp[hisCount/2-1];b=(int)temp[hisCount/2];zhongwei=(a+b)/2;//temp[9]=b;}}//眾數(shù)if(hisCount>1){k=0;for(i=0;i<hisCount-1;i++){for(j=i;j<hisCount-1;j++){if(history[j]!=history[j+1])break;num_num[k]++;num_index[k]=i;}if(i!=j)k++;i=j;}}if(k!=0){i=0;j=i;if(k>1){while(1){if(num_num[i]<=num_num[i+1])j=i+1;if(i+1==k-1)break;i++;}}}clear_screen();均值:displayPress(junzhi,1);最大值:if(hisCount>1)displayPress(temp[hisCount-1],3);elsedisplayPress(temp[0],3);最小值:displayPress(temp[0],5);中位數(shù):displayPress(zhongwei,7);while(1){keyValue=Getkeyboard();if(keyValue==8)break;elseif(keyValue==6){clear_screen();均值:displayPress(junzhi,1);最大值:if(hisCount>1)displayPress(temp[hisCount-1],3);elsedisplayPress(temp[0],3);最小值:displayPress(temp[0],5);中位數(shù):displayPress(zhongwei,7);}elseif(keyValue==10){clear_screen();if(k==0||k==4||((k==1)&&(num_num[0]==hisCount))||((k==2)&&(hisCount==num_num[0]+num_num[1])))無眾數(shù)else{眾數(shù)for(i=0;i<k;i++){if(num_num[i]==num_num[j]){a=num_num[i];zhongshu=(int)temp[num_index[i]];memset(str1,0,6);int2str(a,str1);次display_GB2312_string((i+1)*2+1,1,str1);displayPress(zhongshu,(i+1)*2+1);}}}}}return;}voidsetLimit(){unsignedcharidatakeyValue=99;unsignedcharidataflag=0;local_index=0;clear_screen();閾值設(shè)置

閾值:displayPress(limit,3);while(1){keyValue=Getkeyboard();if(flag==0){flag=1;if(keyValue==9){if(local_index>0){local_index--;}}elseif(keyValue==11){if(local_index<3){local_index++;}}elseif(keyValue==2){local_index=0;limit=0;閾值:}elseif(keyValue==5||keyValue==7)compute(keyValue);elseif(keyValue==12)break;flag=0;}delay(20);}delay(20);return;}voidcompute(unsignedcharkey){unsignedlongidataindex_num[4]={