【導(dǎo)讀】隨著工業(yè)發(fā)展，國民經(jīng)濟(jì)日益增長，人民生活指數(shù)也在不斷提高。境卻帶來不可逆的影響，因?yàn)榭諝赓|(zhì)量的惡化，使人類引起一系列呼吸道病癥，國家政府出臺政策，一方面從源頭控制污染源，一方面增加空氣。各大中城市也將作為天氣預(yù)報(bào)一項(xiàng)重要指標(biāo)，時(shí)時(shí)提醒市民關(guān)。本設(shè)計(jì)就是基于51系列單片機(jī)的監(jiān)控預(yù)警系統(tǒng)，對環(huán)境里的。濃度進(jìn)行實(shí)時(shí)監(jiān)控，預(yù)警。鳴器報(bào)警模塊可在環(huán)境濃度超過設(shè)置值時(shí)進(jìn)行報(bào)警。本系統(tǒng)電路穩(wěn)定性高、

　　

【正文】 (Dat1==Dat2) return Dat1。 //校驗(yàn)兩次數(shù)相等，輸出 } /*************************lcd1602 程序 **************************/ void wr_(unsigned char )//寫指令 { delay1ms(1)。 RS=0。 RW=0。 EN=0。 P2=。 delay1ms(1)。 EN=1。 delay1ms(1)。 EN=0。 } void wr_dat(unsigned char dat)//寫數(shù)據(jù) { delay1ms(1)。 RS=1。 RW=0。 EN=0。 P2=dat。 delay1ms(1)。 EN=1。 delay1ms(1)。 EN=0。 } void lcd_init()//初始化設(shè)置 // { delay1ms(15)。 wr_(0x38)。delay1ms(5)。 wr_(0x80)。delay1ms(5)。 wr_(0x01)。delay1ms(5)。 佳木斯大學(xué)學(xué)士學(xué)位論文 29 佳木斯大學(xué)信息電子技術(shù)學(xué)院 wr_(0x06)。delay1ms(5)。 wr_(0x0c)。delay1ms(5)。 } void writevalue(uchar add,uchar dat) { wr_(0x80+add)。 wr_dat(dat)。 } void zifuchuan(uchar *ch) { while(*ch!=0) wr_dat(*ch++)。 delay1ms(20)。 } void TimeInitial() { TMOD=0x10。 TH1=(65536200)/256。//賦值 TL1=(65536200)%256。//賦值 EA=1。 //總中斷允許 ET1=1。 TR1=1。 } void main(void) { lcd_init()。 wr_(0x80)。 TimeInitial()。 zifuchuan( SYSTEM)。 delay1ms(200)。 BUZZER=0。 while(1) { Chan0Value=GetValue0832(0)。 佳木斯大學(xué)學(xué)士學(xué)位論文 30 佳木斯大學(xué)信息電子技術(shù)學(xué)院 delay1ms(100)。 Chan1Value=GetValue0832(1)。 wr_(0x80+0x40)。 zifuchuan(Now:)。 writevalue(0x40+4,Chan0Value/100+0x30)。 writevalue(0x40+5,Chan0Value%100/10+0x30)。 writevalue(0x40+6,Chan0Value%100%10+0x30)。 zifuchuan( Set:)。 if(flag==0) { writevalue(0x40+12,temp/100+0x30)。 writevalue(0x40+13,temp%100/10+0x30)。 writevalue(0x40+14,temp%100%10+0x30)。 } else { writevalue(0x40+12,39。39。)。 writevalue(0x40+13,39。39。)。 writevalue(0x40+14,39。39。)。 } if(Chan0Valuetemp)BUZZER=1。 else BUZZER=0。 if(Chan0Value50){G=0。Z=0。D=0。W=1。} else if((Chan0Value50)amp。amp。(Chan0Value100)){G=0。Z=0。D=1。W=0。} else if((Chan0Value100)amp。amp。(Chan0Value150)){G=0。Z=1。D=0。W=0。} else if(Chan0Value150){G=1。Z=0。D=0。W=0。} //最大值 255 else {G=0。Z=0。D=0。W=0。} //wr_(0x80+0x40)。 //zifuchuan(Chanal 1:)。 //writevalue(0x40+10,Chan1Value/100+0x30)。 //writevalue(0x40+11,Chan1Value%100/10+0x30)。 //writevalue(0x40+12,Chan1Value%100%10+0x30)。 //delay1ms(1000)。 } 佳木斯大學(xué)學(xué)士學(xué)位論文 31 佳木斯大學(xué)信息電子技術(shù)學(xué)院 } void t1(void) interrupt 3 using 1 //中斷函數(shù) { TH1=(65536500)/256。 TL1=(65536500)%256。 clock_temp++。 if(clock_temp200){clock_temp=0。} if(clock_temp62) PWM=0。 else PWM=1。 if(tt==1) clock++。 if(clock100){clock=0。flag=~flag。} if(SURE==0) { delay1ms(30)。 tt=~tt。//shan=1。 while(!SURE)。 } if(ADD==0) { temp++。 delay1ms(30)。 while(!ADD)。 } if(DEC==0) { temp。 delay1ms(30)。 while(!DEC)。 } } 佳木斯大學(xué)學(xué)士學(xué)位論文 32 佳木斯大學(xué)信息電子技術(shù)學(xué)院 附錄 4 外文參考資料翻譯（原 文、譯文） The research of haze governance issues Haze is particles floating in the atmosphere such as dust, aerosol particles, in certain humidity, temperature and other weather conditions have relatively stable state of the weather phenomenon. Fog disaster, is the result of air pollution for a long time. How to control air pollution is one of the urgent problems facing mankind. Haze weather mainly is the development pattern, caused by the unreasonable industrial structure and energy structure, its roots in the fossil energy, also is a coal burning, one is the fuel, another way is more extensive, a large amount of pollutant discharge, the main reasons include the atmospheric air pressure is low. The ground dust, which is low humidity of the air, the ground and car flow make stir up dust. Automobile exhaust is haze is a factor, as well as the factory produce secondary pollution, etc. This paper mainly studies the typical haze literature is reviewed, mainly analyzes the cause of t he haze and fog governance countermeasures and Suggestions. And from the Angle of theoretical analysis, draw lessons from the intermediate microeconomic theory, gives the utility maximization to maximize the ine and social levels of smo g pollution. Finally, pointed out the direction of further research, the root cause of the haze in the future the main empirical research is prospected. Studies have show n that recent strong fog weather is atmospheric stability, manmade pollutants, together with the abundant water vapor and dust, is a natural factors and human factors bined action of environmental pollution event. Because of air flow and the location of the adjacent, fog inevitable peration, diffusion, etc., no country, which city can escape in the fog haze covered large area. All over the world have taken place in different levels of smog event, such a beautiful environment of the country, including Singapore there were different degrees of haze weather, other are Malaysia, India and other countries, has caused extensive concern of the people all over the world. In today39。s increasingly social and economic development, people pay more and more attention to the surrounding environment. Environment not only affects the future development of the foundation, also affects people39。s health. Not assured labor health, human resources required for further economic development bees 佳木斯大學(xué)學(xué)士學(xué)位論文 33 佳木斯大學(xué)信息電子技術(shù)學(xué)院 madras reflected. In meteorology, due to a large number of tiny drops of water floating in the air, make the horizontal visibility is less than 1. 0 km is called fog。 Due to the small dry dust particles floating in the air, make the horizontal visibility less than 10. 0 km called haze, sometimes called gray haze. A mixture of both is called smog. And our main object of governa nce is haze, fog and some relatively minor. In spite of the fog day also affect the safety of people travel, but pared with haze caused by environmental problems will soon be much less. Literature review Through the study of resource and environmental