【正文】 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。本次課程設(shè)計(jì)中的四位數(shù)碼管與單片機(jī)的連接電路如圖，其選通情況如表 3— 3： 圖 LED信息顯示模塊電路圖 表 3— 3：數(shù)碼管選位情況表 C B A 選位情況 0 0 0 0 0 0 Y0 輸出高電平即第 1 位被選中 7 0 0 1 0 0 1 Y1 輸出高電平即第 2 位被選中 0 1 0 0 1 0 Y2 輸出高電平即第 3 位被選中 0 1 1 0 1 1 Y3 輸出高電平即第 4 位被選中 控制輸入模塊 本模塊有 2 個(gè)獨(dú)立按鍵，一個(gè)是復(fù)位按鍵，另一個(gè)為解除報(bào)警按鍵，接在 口。全 靜態(tài)操作： OHz 一 24MHz 3 紅 外 對(duì) 射 型 傳 感 器報(bào) 警 裝 置單片機(jī)處理系統(tǒng) L E D 顯 示鍵 盤 輸 入L E D 顯 示控 制 輸 入 圖 液位監(jiān)測(cè)報(bào)警系統(tǒng)方案二框圖 方案一與方案二有很多相似之處，兩個(gè)設(shè)計(jì)都運(yùn)用到了單片機(jī)，用到了傳感器，運(yùn)用了 LED 顯示管，而且在功能方面都很相似。如何使這種手工操作走向自動(dòng)化或半自動(dòng)化， 讓護(hù)理人員監(jiān)控病人打點(diǎn)滴的進(jìn)程時(shí)間得到充分利用，這就要求醫(yī)療器械加速自動(dòng)化與半自動(dòng)化進(jìn)程，提高醫(yī)護(hù)質(zhì)量。 2 2 總體方案設(shè)計(jì) 本次設(shè)計(jì)思想主要是想借助單片機(jī)，對(duì) 醫(yī)療點(diǎn)滴輸液 加以半自動(dòng)化的 控制 。對(duì)于方案二而言，成本低，最重要的是安裝上方便，醫(yī)護(hù)人員可根據(jù)點(diǎn)滴瓶的大小，在安裝時(shí)進(jìn)行調(diào)整。 32 個(gè)可編程 I / O 口線 同時(shí)在 口的作用下，報(bào)警器響起。s time for the wild fruits to ripe. The picturesque Arxan in Autumn is indeed a fairyland only exists in a dream that satisfies all your fantasies. If it rains heavily on Saturday night, some elderly Chinese 17 will say it is because Zhinu, or the Weaving Maid, is crying on the day she met her husband Niulang, or the Cowherd, on the Milky Way. Most Chinese remember being told this romantic tragedy when they were children on Qixi, or the Seventh Night Festival, which falls on the seventh day of the seventh lunar month, which is usually in early August. This year it falls on Saturday, August 2. Folklore Story As the story goes, once there was a cowherd, Niulang, who lived with his elder brother and sisterinlaw. But she disliked and abused him, and the boy was forced to leave home with only an old cow for pany. The cow, however, was a former god who had violated imperial rules and was sent to earth in bovine form. One day the cow led Niulang to a lake where fairies took a bath on earth. Among them was Zhinu, the most beautiful fairy and a skilled seamstress. The two fell in love at first sight and were soon married. They had a son and daughter and their happy life was held up as an example for hundreds of years in China. Yet in the eyes of the Jade Emperor, the Supreme Deity in Taoism, marriage between a mortal and fairy was strictly forbidden. He ordered the heaven troop to catch Zhinu back. Niulang grew desperate when he discovered Zhinu had been taken back to heaven. Driven by Niulang39。============================================ TIMER:MOV TL0, 0F0H MOV TH0, 0EFH MOV A, R1 MOVC A, A+DPTR MOV P1, R3 MOV P2, A MOV A, R3 ADD A, 20H MOV R3, A INC R1 CJNE R1, 70H, OUT MOV R3, 8FH MOV R1, 6CH OUT: RETI 。 74HC138的 A、 B、 C 與單片機(jī)的 、 、 相連通，我們可以通過程序控制 、 、 38 譯碼器的輸出，從而達(dá)到選位的目的。 1000 次擦寫周期 系統(tǒng)將復(fù)位，等待其他的床位監(jiān)測(cè)信息。 目前醫(yī)院普遍使用的是人工監(jiān)控點(diǎn)滴輸液裝置器，將液體容器掛在一定高度，利用勢(shì)差將液體輸入病人體內(nèi)，用軟管夾對(duì)軟管夾緊和放松控制滴速，藥物的有無將威脅病人的生命安全，為此 醫(yī)護(hù)人員 要不定時(shí)的觀察藥物的情況，本設(shè)計(jì) 根據(jù)需要設(shè)定液位控制高度，同時(shí)具備報(bào)警、高度顯示等功能，使用了紅外對(duì)射 傳感器，使其具有與液面不接觸的特點(diǎn)，可用于有毒、腐蝕性液體液位的控制， 簡單、方便、安全、 具有較高的 使用 價(jià)值。首先通過液位傳感器檢測(cè)信號(hào)，然后將檢測(cè)到的信號(hào)送給單片機(jī)進(jìn)行處理，通過數(shù)碼管和報(bào)警裝置，將床位信息顯示在監(jiān)控室，然后由護(hù)理人員對(duì)具體情況進(jìn)行處理。因此，從設(shè)計(jì)和經(jīng)濟(jì)的角度講，我們組采用了方案二。 3 個(gè) 16 位定時(shí)／計(jì)數(shù)器 如果按下 口外接的按鈕，則報(bào)警停止，顯示也熄滅，表示已有醫(yī)護(hù)人員對(duì)信息進(jìn)行處理。s misery, the cow told him to turn its hide into a pair of shoes after it died. The magic shoes whisked Niulang, who carried his two children in baskets strung from a shoulder pole, off on a chase after the empress. The pursuit enraged the empress, who took her hairpin and slashed it across the sky creating the Milky Way which separated husband from wife. But all was not lost as magpies, moved by their love and devotion, formed a bridge across the Milky Way to reunite the family. Even the Jade Emperor was touched, and allowed Niulang and Zhinu to meet once a year on the seventh night of the seventh month. This is how Qixi came to be. The festival can be traced back to the Han Dynasty (206 BCAD 220). Traditionally, people would look up at the sky and find a