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課程設(shè)計(jì)-單片機(jī)上下限溫度報(bào)警器課程設(shè)計(jì)-wenkub.com

2025-05-31 16:27 本頁(yè)面
   

【正文】 s not needed. Instead, he plans to deploy his 270squarefoot (25squaremeter) main chute at an altitude of around 5,000 feet (1,524 meters). In order to deploy this chute successfully, he will have to slow to 172 mph (277 kph). He will have a reserve parachute that will open automatically if he loses consciousness at mach speeds. Even if everything goes as planned, it won39。t start planning... Those years, those days of do, finally, like youth, will end in our life. 此刻,天空是陰暗的,空氣里有著剛下過(guò)雨之后的清新因子。 At the moment, the sky is dark, the air is fresh factor after just rained. Suddenly thought of blue plaid shirt。想要的,不想要的,界限明確,好像沒(méi)有什么可以撼動(dòng)自己。t remember his appearance. 童年時(shí),覺(jué)得壓歲錢(qián)和新衣服是過(guò)年必備,但是隨著年齡的推進(jìn),會(huì)越來(lái)越發(fā)現(xiàn),那些東西根本就可有可無(wú);初中時(shí),以為要有一場(chǎng)暗戀才意味著真正的成 長(zhǎng),但三年過(guò)去后,自己心平氣和的寫(xiě)同學(xué)錄的時(shí)候,突然就發(fā)現(xiàn)是不是真正的成長(zhǎng)了,好像并沒(méi)有那么重要了;然后到了高中,覺(jué)得非要吐露出自己的心聲才能為高中生涯里的懵懂情愫劃上一個(gè)句點(diǎn),但畢業(yè)晚會(huì)的時(shí)候最終還是被梗塞在了咽喉,后來(lái)再次站在他曾經(jīng)揮汗如雨的球場(chǎng),看著他投過(guò)籃球的球框時(shí),突然間發(fā)現(xiàn)自己已經(jīng)想不起他的容顏。 Junior high school, thought to have a crush on just means that the real growth, but over the past three years later, his writing of alumni in peace, suddenly found that isn39?;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。s governing body, has also ordered an immediate investigation into the referee39。s 150th anniversary celebrations and will attend City39。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 it. If you are worried about how the time limits apply to you, 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. 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。DS18B20 初始化程序 INIT_1820: SETB DQ NOP CLR DQ MOV R0,250 28 TSR1: DJNZ R0,TSR1 SETB DQ MOV R0,07H TSR2: DJNZ R0,TSR2 JB DQ,TSR3 LJMP TSR4 TSR3: SETB FLAG LJMP TSR5 TSR4: CLR FLAG LJMP TSR7 TSR5: MOV R0,06BH TSR6: DJNZ R0,TSR6 TSR7: SETB DQ RET 。將溫度高地位讀出 MOV R1,36H 。讀出轉(zhuǎn)換后的溫度值 。========================================================== 。等待按鍵抬起 J0: JB ,KEY1 LCALL LOOK_ALARM SJMP J0 J1: JB ,KEY1 LCALL LOOK_ALARM SJMP J1 LOOK_ALARM: MOV A,TEMP_TH 。借位標(biāo)志位 C=1,轉(zhuǎn) RET CHULI1: SETB LCALL WA CLR RET 18 。主控制程序; MAIN: LCALL GET_TEMPER LCALL TEMPER_COV LCALL TBCD_DISP LCALL DISPLAY LCALL KEY LCALL ALLERT LJMP MAIN ALLERT: MOV A,TEMP_TH SUBB A,TEMPER_NUM 。 16 參考文 獻(xiàn): [1]朱定華 .單片微機(jī)原理與應(yīng)用 . 北京:清華大學(xué)出版社 , 2021. [2]朱定華 .模擬電子技術(shù) . 北京: 清華大學(xué)出版社, 2021. [3]何立民 .MCS51 系列單片機(jī)應(yīng)用系統(tǒng)設(shè)計(jì) 系統(tǒng)配制與接口技術(shù) . 北京: 北京航空航天大學(xué)出版社 , 2021. [4]單片機(jī)原理課程設(shè)計(jì)指導(dǎo)書(shū) . 陳青 編寫(xiě) 丘光純 審 , 2021. [5]樓然苗,李光飛 .51 系列單片機(jī)設(shè)計(jì)實(shí)例 . 北京:北京航空航天大學(xué)出版社,2021. 附 1:設(shè)計(jì)總程序 TEMPER_L EQU 36H TEMPER_H EQU 35H TEMPER_NUM EQU 59H TEMPER_XIAO EQU 60H TEMP_TH EQU 27H 。我們通過(guò)查閱 大量有關(guān)資料,并在小組中討論,交流經(jīng)驗(yàn)和自學(xué),若遇到實(shí)在搞不明白的問(wèn)題就會(huì)及時(shí)的請(qǐng)教老師,使自己學(xué)到了不少知識(shí),也經(jīng)歷了不少艱辛,但收獲同樣巨大。課程設(shè)計(jì)結(jié)束了,但是從中學(xué)到的東西讓我從中受益 。 在這次的課程設(shè)計(jì)過(guò)程中,我查閱了大量的資料, 為了讓自己的設(shè)計(jì)更加完善,查閱這方面的 資料 是十分必要的,同時(shí)也 是必不可少的。然后焊接元器件, 依據(jù)老師所講的結(jié)合輔導(dǎo)書(shū)上所給的電路 圖,將各個(gè)元件按照電路圖上正確的位置放好然后進(jìn)行焊接。 有溫度上下限控制,并發(fā)音報(bào)警,同時(shí)開(kāi)啟相應(yīng)繼電器。每個(gè)的內(nèi)部驅(qū)動(dòng)電路都是一樣的,如圖 111 所示。 9 腳接電源。它可以驅(qū)動(dòng)直流電動(dòng)機(jī)、 LED 顯示屏、燈絲燈具、以及大功率的緩沖器等等。 驅(qū)動(dòng)芯片 ULN2021 驅(qū)動(dòng)芯片 ULN2021 內(nèi)含 7 個(gè)共射級(jí)的達(dá)林頓陣列。 13 /BL 是滅燈端,低電平有效 ,當(dāng)其為低電平時(shí),不管輸入的數(shù)據(jù)狀態(tài)如何,其輸出全為低電平。其輸入為 8421BCD 碼。圖 4下面的表是對(duì)應(yīng)的一部分溫度值。 11 雙字節(jié)12位溫度格式與十進(jìn)制溫度的轉(zhuǎn)換關(guān)系 圖 17 分辨率設(shè)置表 當(dāng) DSI8B20接收到溫度轉(zhuǎn)換命令后,開(kāi)始啟動(dòng)轉(zhuǎn)換。 圖 16 DS18B20 的 64 位光刻 ROM 接著再來(lái)了解一下 DS18B20的內(nèi)存結(jié)構(gòu)與溫度測(cè)試的功能 : DSI8B20溫度傳感器的內(nèi)部存儲(chǔ)器包括一個(gè)高速暫存 RAM (便箋式的內(nèi)部存儲(chǔ)器)和一個(gè)非易失性的可電擦除的 EEPROM,后者存放高溫和低溫觸發(fā)器TH, TL和結(jié)構(gòu)寄存器。高低溫報(bào)警觸發(fā)器 TH 和 TL,配置寄存器均由一個(gè)字節(jié)E2PROM 組成,使用一個(gè)存儲(chǔ)器功能命令可對(duì) TH, TL 或配置寄存器寫(xiě)入。 ⑷ 通過(guò)編程可實(shí)現(xiàn) 9~ l2 位的數(shù)字讀數(shù)方式, 可在至多 75
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