【正文】 操作者在使用該系統(tǒng)時就像是在操作一臺實際的控制儀器一樣。 4．系統(tǒng)功能獨立，配置合理。其中單片機部分既可獨立運行，也可以通過 PC 機進行測試，這為不同的用戶提供了一定的選擇空間。 5 ．經(jīng)運行驗證，系統(tǒng)具有響應(yīng)速度快，操作簡便，工作可靠等特點。 致 謝 在?？茖W(xué)習(xí)生活即將結(jié)束之際 ，對三年來曾關(guān)心、指導(dǎo)、幫助和鼓勵過我的老師、同學(xué)們表示衷心的感謝。讓我們共同分享完成論文的喜悅。 感謝我的家人在我三年?？频膶W(xué)習(xí)、工作和生活中對我一貫的支持、理解與鼓勵。 31 感謝王艷導(dǎo)師在論文的選題、實驗設(shè)計與論文撰寫過程中，自始至終以嚴(yán)謹(jǐn)?shù)闹螌W(xué)作風(fēng)和崇高的責(zé)任心給予了全面的指導(dǎo)。 最后，祝愿所有的老師和同學(xué)在今后的工作、學(xué)習(xí)和生活中事事順心、心想事成。謝謝！ 參考文獻 [1]何延山；礦井通風(fēng)與安全 [M]高等教育出版社 張興春；煤礦面臨的困境及應(yīng)對措施 [J]；煤炭經(jīng)濟研究； 1998 年 09 期 [2]孫育才；單片微型計算機及其應(yīng)用 MCS51 系列 [M]；東南大學(xué)出版； 2021 年 6 月； [3]張毅剛 .新編 .MCS51單片機應(yīng)用設(shè)計 [M].哈爾濱工業(yè)大學(xué)出版社 ,~167. [4]錢顯毅 .傳感器原理與應(yīng)用 [M].東南大學(xué)出版社 ,~295. [5]劉少強 ,張靖 .傳感器設(shè)計與應(yīng)用實例 [M].中國電力出版社 ,~163. [6]張洪潤 .傳感器應(yīng)用設(shè)計 300 例 [M].北京航空航天大學(xué)出版社 ,~149. [7]趙亮，侯國銳 .單片機 C語言編程與 實例 [M]. 北京：人民郵電出版社， 2021,9 [8]高鵬等， Protel99 入門與提高 [M].人民郵電出版社， 2021， 2 [9]歐陽文 .ATMEL89 系列單片機的原理與開發(fā)實踐 [M].北京：中國電力出版社， [10]李建忠，單片機原理及運用 [M].西安：西安電子科技大學(xué)出版社 [11]張培仁，基于 C 語言編程 MCS51單片機原理與應(yīng)用 [M].北京：清華大學(xué)出版社，2021. 32 附錄 A 高濃度瓦斯傳感器 (國產(chǎn) ) 型號 :ZR14GJW4/100 基本參數(shù) 工作環(huán)境條件 : 溫度 : 0℃～ 40℃ 相對濕度 : ≤ 98% 大氣壓力 : 86kPa～ 116kPa 風(fēng)速 : 0m/s～ 8m/s 測量范圍 : 高濃： 0%CH4～ 100%CH4 溫度： 0℃～ 40℃ 測量范圍（ %CH4） 高濃： 基本誤差（ %CH4） ≤177。 測量上限的177。 10% 溫度：基本誤差：177。 2℃ 分辨率 : 高濃 0. 1%CH4， 溫度 ℃ 顯示方式 : 六位 LED，其右三位顯示甲烷，左三位顯示溫度 響應(yīng)時間 : ≤ 20s 報警點 : 可調(diào) ,儀器出廠時設(shè)定在 %CH4； 在 %%CH4 內(nèi)可調(diào) 斷電點 : 可調(diào) ,儀器出廠時設(shè)定在 %CH4 復(fù)電點 : 可調(diào) , 儀器出廠時設(shè)定在 %CH4 高低濃度轉(zhuǎn)換點： 1）從低到高： % CH4 2）從高到低： % CH4 調(diào)節(jié)方式：使用本公司生產(chǎn)的 FYF 型遙控器 33 防爆標(biāo)志： ExibI 防爆合格證號： 1044440 安全標(biāo)志證號： 20212726 報警方式 :聲光，其中 : 音量 : ≥ 85dB 光可見度 : ≥ 20m 工作方式 :擴散式 防爆型式 :礦用本安兼隔爆型； 防爆標(biāo)志： ExibdI。 輸出信號 : 兩路 200Hz～ 1000Hz 頻率輸出。 甲烷： 200～ 600Hz 對應(yīng)甲烷濃度為 0～ 4% 600～ 1000Hz 對應(yīng)甲烷濃度為 4～ 100%。 溫度： 200Hz～ 1000Hz 對應(yīng) 0℃～ 40℃。 Ui：≤ DC 20V； Ii：≤ 90mA。 關(guān)聯(lián)設(shè)備 :本公司生產(chǎn)的 DJ4G2021 固定式甲烷斷電儀 防爆型式：礦用隔爆兼本質(zhì)安全型 防爆標(biāo)志： Exd[ib]I，傳感器到斷電儀的距離不大于 2021 米。 防爆合格證號： 1042460 安全標(biāo)志證號： 20212728。 配接設(shè)備：本公司生產(chǎn)的 KJF33 通用監(jiān)控分站 防爆型式：礦用 本質(zhì)安全型，防爆標(biāo)志： ExibI 防爆合格證號： 1034356 ，安全標(biāo)志證號： 20213034 傳感器到分站的距離不大于 2021 米。 傳輸電纜 : 電纜最大長度： 2021m 分布電容≤ F／ km 分布電感≤ 1mH／ km 外形尺寸： 200 mm 110 mm 35mm 質(zhì)量： g an employment tribunal clai 34 Employment 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 information 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, 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。t charge you more than 35% of your pensation if you win the case. If you are thinking about signing up for a damagesbased agreement, you should make sure 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 Watch mCayman Islandsbased Webb, the 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 Yaya 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. 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. 35 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. 一字開頭的年齡已經(jīng)到了尾聲。或許是愧疚于自己似乎把轉(zhuǎn)瞬即逝的很多個不同的日子過成了同一天的樣子；或 許是追溯過去，對自己那些近乎偏執(zhí)的怪異信念的醒悟，這些天以來，思緒一直很凌亂，在腦海中不斷糾纏?？傆X得自己自己似乎應(yīng)該去做點什么，或者寫點什么。二十年的人生軌跡深深淺淺，突然就感覺到有些事情，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