【正文】
6 位置檢測(cè)系統(tǒng) 位置檢測(cè)系統(tǒng)是礦車運(yùn)行在斜坡導(dǎo)軌上重要的檢測(cè)系統(tǒng),實(shí)時(shí)反應(yīng)礦車運(yùn)行的狀況,編程時(shí)將位置檢測(cè)程序 置于自動(dòng)控制擋車欄首位指令之前。位置檢測(cè)系統(tǒng)需要完成的功能是將礦車的運(yùn)行速度檢測(cè)計(jì)算出來(lái)。圖 24 為位置檢測(cè)系統(tǒng)邏輯流程。 圖 24 位置檢測(cè)流程圖 輸入信號(hào) 輸出信號(hào) 編號(hào) 用途 編號(hào) 用途 檢測(cè)礦車位置傳感器信號(hào) 檔車欄提升電機(jī)正傳 KM1(開(kāi)啟) 檢測(cè)礦車位置傳感器信號(hào) 檔車欄提升電機(jī)反傳 KM2(關(guān)閉) 檢測(cè)礦車位置傳感器信號(hào) 礦車電機(jī)回路驅(qū)動(dòng) KM3 備用 系統(tǒng)故障報(bào)警輸出 KM4 備用 備用 檢測(cè)擋車欄提升信號(hào)開(kāi)到位 備用 檢測(cè)擋車欄提升信號(hào)開(kāi)到位 備用 7 / 11 7 擋車欄系統(tǒng) 煤礦礦車防跑車系統(tǒng) 開(kāi)啟和關(guān)閉是是 煤礦礦車防跑車系統(tǒng) 軟件的核心部分。礦車在斜坡運(yùn)行過(guò)程中, PLC 根據(jù)檢測(cè)出的礦車運(yùn)行速度和用戶設(shè)定的值進(jìn)行對(duì)比,當(dāng)?shù)V車速度超過(guò)設(shè)定值時(shí),擋車欄鋼絲繩網(wǎng)提升開(kāi)啟,防止跑車造成的事故,反之關(guān)閉。經(jīng)過(guò)仔細(xì)的調(diào)研、分析,設(shè)計(jì)出自動(dòng)開(kāi)啟和關(guān)閉擋車欄動(dòng)作的邏輯流程圖,如圖 25所示 圖 25 煤礦礦車防跑車系統(tǒng) 功能圖 在自動(dòng)擋車欄控制入口處,需滿足一系列的條件才能啟動(dòng)礦車,礦車開(kāi)始運(yùn)行進(jìn)入 自動(dòng)控制流程。圖 26 為絞車啟動(dòng)條件。 圖 26 礦車啟動(dòng)條件 8 / 11 在自動(dòng)控制擋車欄程序中必需考慮的另一個(gè)方面是礦車停止運(yùn)行的條件, 當(dāng)正常的絞車停止或者手動(dòng)按下停止按鈕,或者遇到一些故障情況,程序?qū)⒆詣?dòng)停止絞車工作。圖 27 為絞車停止條件,圖中滿足任意條件時(shí),絞車將停止工作。 圖 27 礦車停止條件 8 聲光語(yǔ)音報(bào)警系統(tǒng) 圖 28 報(bào)警系統(tǒng)邏輯流程圖 圖 28 為報(bào)警系統(tǒng)流程圖,其功能是將礦車跑車后,將故障發(fā)送至監(jiān)控平臺(tái),并語(yǔ)音提示,減少人身設(shè)備傷亡。 9 / 11 結(jié)束語(yǔ) 本設(shè)計(jì)完成的基于 PLC 的煤礦礦車防跑車系統(tǒng)能夠完成以下工作內(nèi)容: 1 能夠有效的對(duì)擋車欄進(jìn)行控制,分為手動(dòng)控制和自動(dòng)控制兩種方式; 2 能夠?qū)ΦV車的運(yùn)行狀態(tài)進(jìn)行實(shí)時(shí)監(jiān)控,當(dāng)?shù)V車運(yùn)行出現(xiàn)問(wèn)題時(shí)可及時(shí)報(bào)警并控制擋車欄對(duì)礦車進(jìn)行攔截; 本設(shè)計(jì)成果也存在一些問(wèn)題,由于條件所限,本次設(shè)計(jì)只能完成模擬實(shí)驗(yàn),如運(yùn)用在實(shí)際中,電壓穩(wěn)定、工作環(huán)境等都可能對(duì)系統(tǒng)產(chǎn)生影響,造成系統(tǒng)出現(xiàn)一些誤差。需要進(jìn)一步改善。 由于本人經(jīng)驗(yàn)和能力有限,對(duì)系統(tǒng)設(shè)計(jì)所需軟硬件的使用還不能達(dá)到駕輕就熟的程度,所以設(shè)計(jì)的程序也只能基本上達(dá)到設(shè)計(jì)要求。 參考文獻(xiàn) 1 陳立定 . 電氣控制與可編程序控制器的原理及應(yīng)用 [M]. 北京:機(jī)械工業(yè)出版社, . 2 楊長(zhǎng)能等.可編程控制器( PC)基礎(chǔ)及應(yīng)用 [M].重慶大學(xué)出版社,1992. 3 何衍慶.可編程控制器原理及應(yīng)用技巧 [M].北京:化學(xué)工業(yè)出版社,1998. 4 王晨,賈福音等.斜井跑車保護(hù)裝置的研究現(xiàn)狀與發(fā)展趨勢(shì) [J].煤礦機(jī)械 , 2021, 31(3). 5 陳拓其.一種新型礦車防跑車機(jī)構(gòu)的設(shè)計(jì)與仿真 [J].礦山機(jī)械,2021, 37(17): 3840. 10 / 11 請(qǐng)您刪除一下內(nèi)容, O(∩ _∩ )O謝謝!??! Many people have the same mixed feelings when planning a trip during Golden Week. With heaps of time, the sevenday Chinese 請(qǐng)您刪除一下內(nèi)容, O(∩ _∩ )O 謝謝?。。?National Day holiday could be the best occasion to enjoy a destination. However, it can also be the easiest way to ruin how you feel about a place and you may bee more fatigued after the holiday, due to battling the large crowds. During peak season, a dream about a place can turn to nightmare without careful planning, especially if you travel with children and older people. As most Chinese people will take the holiday to visit domestic tourist destinations, crowds and busy traffic are inevitable at most places. Also to be expected are increasing transport and acmodation prices, with the possibility that there will be no rooms available. It is also mon that you39。 ll wait in the line for one hour to get a ticket, and another two hours at the site, to only see a tiny bit of the place due to the crowds. Last year, 428 million tourists traveled in China over the weeklong holiday in October. Traveling during this period is a matter that needs thorough preparation. If you are short on time to plan the uping Golden Week it may not be a bad idea to avoid some of the most crowded places for now. There is always a place so fascinating that everyone yearns for. Arxan is a place like this. The beauty of Arxan is everlasting regardless of the changing of four seasons. Bestowed by nature, its spectacular seasonal landscape and mountains are just beyond word. Arxan is a crucial destination for the remended travelling route, China Inner Mongolia Arxan — Hailar — Manzhouli. It is also the joint of the four prairies across the SinoMongolian border, where people gravitate towards the exotic atmosphere mixed with Chinese, Russian, and Mongolia elements. As a historic site for the Yitian Battle, Arxan still embodies the spirit of Genghis Khan. Walking into Arxan, you will be amazed by a kaleidoscope of geous c