【導(dǎo)讀】摘要：本次設(shè)計(jì)主要是以AT89S52單片機(jī)作為主體設(shè)計(jì)的汽車倒車防撞系統(tǒng)，這種智能的系統(tǒng)給汽車在倒車時(shí)提供較高的安全性。該系統(tǒng)利用了超聲波不用接。路模塊，液晶顯示模塊以及聲光報(bào)警電路模塊。超聲波探頭主要是進(jìn)行超聲波的。距離時(shí)，蜂鳴器報(bào)警，同時(shí)發(fā)光二極管亮，提醒駕駛員采相應(yīng)的措施。在倒車過(guò)程中的安全性，能很有效的減少交通事故。

　　

【正文】 I[11])。 延安大 學(xué)西安創(chuàng)新學(xué)院本科畢業(yè)論文（設(shè)計(jì)） DisplayOneChar(15, 1, ASCII[12])。 //顯示 M } else { disbuff[0]=S%1000/100。 disbuff[1]=S%1000%100/10。 disbuff[2]=S%1000%10 %10。 DisplayOneChar(11, 1, ASCII[disbuff[0]])。 DisplayOneChar(12, 1, ASCII[10])。 //顯示點(diǎn) DisplayOneChar(13, 1, ASCII[disbuff[1]])。 DisplayOneChar(14, 1, ASCII[disbuff[2]])。 DisplayOneChar(15, 1, ASCII[12])。 //顯示 M } } /********************************************************/ void zd0() interrupt 1 //T0中斷用來(lái)計(jì)數(shù)器溢出 ,超過(guò)測(cè)距范圍 { flag=1。 //中斷溢出標(biāo)志 } /********************************************************/ void StartModule() //啟動(dòng)模塊 { TX=1。 //啟動(dòng)一次模塊 _nop_()。 _nop_()。 _nop_()。 _nop_()。 _nop_()。 _nop_()。 _nop_()。 _nop_()。 _nop_()。 _nop_()。 _nop_()。 _nop_()。 _nop_()。 _nop_()。 _nop_()。 _nop_()。 _nop_()。 _nop_()。 _nop_()。 _nop_()。 _nop_()。 延安大 學(xué)西安創(chuàng)新學(xué)院本科畢業(yè)論文（設(shè)計(jì)） TX=0。 } /********************************************************/ void delayms(unsigned int ms) { unsigned char i=100,j。 for(。ms。ms) { while(i) { j=10。 while(j)。 } } } /*********************************************************/ void main(void) { unsigned char TempCyc。 Delay400Ms()。 //啟動(dòng)等待，等 LCM講入工作狀態(tài) LCMInit()。 //LCM初始化 Delay5Ms()。 //延時(shí)片刻 (可不要 ) DisplayListChar(0, 0, mcustudio)。 // DisplayListChar(0, 1, )。 ReadDataLCM()。//測(cè)試用句無(wú)意義 for (TempCyc=0。 TempCyc10。 TempCyc++) Delay400Ms()。 //延時(shí) DisplayListChar(0, 1, Distance)。 DisplayListChar(11, 1, Cls)。 while(1) { TMOD=0x01。 //設(shè) T0為方式 1， GATE=1； TH0=0。 TL0=0。 ET0=1。 //允許 T0中斷 EA=1。 //開(kāi)啟總中斷 while(1) { StartModule()。 while(!RX)。 //當(dāng) RX為零時(shí)等待 TR0=1。 //開(kāi)啟計(jì)數(shù) while(RX)。 //當(dāng) RX為 1計(jì)數(shù)并等待 TR0=0。 //關(guān)閉計(jì)數(shù) 延安大 學(xué)西安創(chuàng)新學(xué)院本科畢業(yè)論文（設(shè)計(jì)） Conut()。 //計(jì)算 delayms(80)。 //80MS } } } ag an employment tribunal clai Emloyment tribunals sort out disagreements between employers and employees. You may need to make a claim to an employment tribunal if: you don39。t agree with the disciplinary action your employer has taken against you your employer dismisses you and you think that you have been dismissed unfairly. For more informu, take advice from one of the anisations listed under Further help. Employment tribunals are less formal than some other courts, but it is still a legal process and you will need to give evidence under an oath or affirmation. Most people find making a claim to an employment tribunal challenging. If you are thinking about making a claim to an employment tribunal, you should get help straight away from one of the anisations listed under Further help. ation about dismissal and unfair dismissal, see Dismissal. You can make a claim to an employment tribunal, even if you haven39。t appealed against the disciplinary action your employer has taken against you. However, if you win your case, the tribunal may reduce any pensation awarded to you as a result of your failure to appeal. Remember that in most cases you must make an application to an employment tribunal within three months of the date when the event you are plaining about happened. If your application is received after this time limit, the tribunal will not usually accept i. If you are worried about how the time limits apply to you If you are being represented by a solicitor at the tribunal, they may ask you to sign an agreement where you pay their fee out of your pensation if you win the case. This is known as a damagesbased agreement. In England and Wales, your solicitor can39。t charge you more than 35% of your pensation if you win the case. you39。re clear about the terms of the agreement. It might be best to get advice from an experienced adviser, for example, at a Citizens Advice Bureau. To find your nearest CAB, including those that give advice by , click on nearest CAB. For more information about making a claim to an employment tribunal, see Employment tribunals. The (lack of) air up there Cay man Islandsbased Webb, the Watch m head of Fifa39。s antiracism taskforce, is in London for the Football Association39。s 150th anniversary celebrations and will attend City39。s Premier League match at Chelsea on Sunday. I am going to be at the match tomorrow and I have asked to meet Ya ya Toure, he told BBC Sport. For me it39。s about how he felt and I would like to speak to him first to find out what his experience was. Uefa has opened disciplinary proceedings against CSKA for the racist behaviour of their fans during City39。s 21 win. 延安大 學(xué)西安創(chuàng)新學(xué)院本科畢業(yè)論文（設(shè)計(jì)） Michel Platini, president of European football39。s governing body, has also ordered an immediate investigation into the referee39。s actions. CSKA said they were surprised and disappointed by Toure39。s plaint. In a statement the Russian side added: We found no racist insults from fans of CSKA. Age has reached the end of the beginning of a word. May be guilty in his seems to passing a lot of different life became the appearance of the same day。 May be back in the past, to oneself the paranoid weird belief disillusionment, these days, my mind has been very messy, in my mind constantly. Always feel oneself should go to do something, or write something. Twenty years of life trajectory deeply shallow, suddenly feel something, do it. 一字開(kāi)頭的年齡已經(jīng)到了尾聲?；蛟S是愧疚于自己似乎把轉(zhuǎn)瞬即逝的很多個(gè)不同的日子過(guò)成了同一天的樣子；或許是追溯過(guò)去，對(duì)自己那些近乎偏執(zhí)的怪異信念的醒悟，這些天以來(lái)，思緒一直很凌亂，在腦海中不斷糾纏?？傆X(jué)得自己似乎應(yīng)該去做點(diǎn)什么，或者寫(xiě)點(diǎn)什么。二十年的人生軌跡深深淺淺，突然就感覺(jué)到 有些事情，非做不可了。 The end of our life, and can meet many things really do? 而窮盡我們的一生，又能遇到多少事情是真正地非做不可？ During my childhood