【正文】 ............................... 7 ................................................................................................................ 7 4 軟件設計 .................................................... 8 5 系統(tǒng)調試 .................................................... 9 6 結論 ..........................................錯誤 !未定義書簽。 附錄 1：附圖 ................................................. 11 原理圖 ................................................... 11 電路 PCB 板圖 ............................................. 12 軟件代碼 ................................................. 13 附錄 2：相關設計軟件 .......................................... 15 1 1 前 言 隨著社會的發(fā)展，隨著科技的進步。 本文介紹了一種操作方便、顯示直觀、可集中控制、具有報警功能的智能型液體點滴速度監(jiān)控系統(tǒng)。 方案論證 設計中采用了兩個方案，具體的方案見方案一和方案二。當檢測的液位小于設置的初值時，單片機將控制報警系統(tǒng)響起，以提醒醫(yī) 護人員。當液位低于警戒液位時，傳感器將輸出一低電平，送入 口（一張床位對應一個口，本設計只取一張床位模擬），然后由單片機內部的程序，對信息進行處理，將病床號顯示到 LED 上 ，同時報警啟動，提醒醫(yī)護人員。但綜合分析：超聲波傳感器較紅外傳感器要貴得多，而且方案一還需要 A/D 轉換，成本就更高。 4 3 單元模塊設計 本課程設計主要 由 監(jiān)測 模塊、信息處理模塊 （單片機模塊）、 LED 信息顯示模塊、控制輸入模塊 和 報警 模塊 五 大部分組成。在高位警戒液位時， LM339 的反向輸入端即 3 端口輸入高電平，此時 5 端口輸出高電平，即送入單片機的 口。與 Mcs 一 51 產(chǎn)品指令系統(tǒng)和引腳完全兼容 三級加密程序存儲器 8 個中斷源 空閑方式停止 CPU 的工作，但允許 RAM ，定時／計數(shù)器，串行通信口及中斷系統(tǒng)繼續(xù)工作。而四位數(shù)碼管的位則通過 74HC138 譯碼器來選通。具體接線圖如圖 ： 圖 按鍵與單片機硬件接口電路 此次課程設計中為了達到低于“設定”液位后報警且顯示對應床號的目的。其報警電路如圖 。 .. 程 序 、 存 儲 單元 、 中 斷 設 置 初始 化主 程 序 （ 包 含 報警 程 序 ）中 斷 服 務 子 程 序（ 顯 示 程 序 ）延 遲 子 程 序結 束報 警 中 斷 子 程 序 圖 5 系統(tǒng)調試 本次設計在系統(tǒng)硬件調試方面，初期在老師的指導下，沒遇到什么困難。============================================ HERE: JNB , NEXT CPL JB , STOP CPL NEXT: SJMP MAIN 。 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 colors all the year round the Spring azaleas blooming red in the snow, the Summer sea wavering blue in the breeze, the Autumn leaves painted in yellow covering volcanic traces, and the Winter woods shining white on the vast alpine snowscape. Hinggan League Arxan city is situated in the far eastern area of Inner Mongolia Autonomous Region. Its full name Haren Arxan means hot holy water in the Mongolian language. Arxan is a tourism city in the northern frontier with a blend of large forest, grand prairies, vast snowfield, heaven lake cluster, thermium, as well as volcanic cluster. It is a rare and unique ecotourism base filled with healthy sunshine, clean air and unspoiled green. Nestled close to the country39。 Festival. In this day, girls will throw a sewing needle into a bowl full of water on the night of Qixi as a test of embroidery skills. If the needle floats on top of the water instead of sinking, it proves the girl is a skilled embroiders. Single women also pray for finding a good husband in the future. And the newly married women pray to bee pregnant quickly. Tradition transformed The love story of Niulang and Zhinu, and the Qixi Festival have been handed down for generations. Yet these ancient traditions and customs are slowly dying out. Many modern Chinese, particularly youngsters, seem to know more about St Valentine3