【正文】 I got what he meant. He meant so clear and so direct. And actually, I accepted him some days earlier. I was just waiting for him to break the ice. So finally, the mon interests and the mon understanding brought us together. Some people say the relationship and the feeling will change after getting hitched. You will find that love is no longer strong and there is always lack of passion and what’s worse you may find out many bad habits of your partner, which never appear when you are first in love before the marriage. It seems that many faults turn up after you truly living together and see each other’s face the moment you open your eyes in the early morning. But after almost 4 years from now, I do not feel any negative change in our relationship. During all these years, we know each other better and we bee more tolerant about each other and I realize that if you really love a person you will accept his imperfect. And what is the qualification of a good husband? Once I was chatting with my colleague about this issue. And one of the qualifications I thought was that he must be a good cook. But to my surprise, my colleague said that a good husband must be someone who makes big money. What made her think so was quite beyond me. Maybe I am not sophisticated enough and what I want is just simple life style. The most enjoyable thing is that we go to the market to buy vegetables and other daily stuffs if we both have time. Maybe he is a housebound husband and I love housebound man. And there is another reason why We love going to the market. That is because we sometimes will get some surprises. The surprise is saving little fish which are disserted by the fish mongers. Because these fish are swellfish. Then we will collect them and set them free into the river. Swellfish are lovely creature. When they look like a little submarine when they are swimming in the water and look like a meat ball when you hold them in your hand. And if they are scared, they will swell and look like a little ball. Every time we see them swim away and we feel their happiness of returning home and this also make us cherish life. Maybe some will consider these behavior as something childish. 。更重要的是通過這設(shè)計(jì)，讓我們深刻體會(huì)到了團(tuán)隊(duì)合作的重要性！ ，我們熟悉了 使用 Proteus 的技巧，并且熟悉 了如何選購使用電子元器件。 第 6 腳： E(或 EN)端為使能 (enable)端 ,高電平（ 1）時(shí)讀取信息，負(fù)跳變時(shí)執(zhí)行指令。 激光發(fā)射和接收裝置，是采集人員通過時(shí)激光的通斷，并將結(jié)果傳輸給主控制器。 除 PC 之外，復(fù)位操作還對其他一些寄存器有影響，它們的復(fù)位狀態(tài)如表 42所示。主要管腳有： XTAL1（ 19 腳）和 XTAL2（ 18 腳）為振蕩器輸入輸出端口，外接 12MHz 晶振。其特點(diǎn)： 持 2M~32M 的 SPIFlash 內(nèi)存，播放時(shí)長較大； 內(nèi)嵌 DSP 高速音頻處理器，處理速度快； 內(nèi)置 13Bit/DA 轉(zhuǎn)換器，以及 12Bit/PWM 輸出，音質(zhì)好； 可通過專業(yè)上位機(jī)操作軟件，隨意組合語音； USB 下載方式，支持在線下載 /脫機(jī)下載，即便在 WT588 通電的情況下，也一樣可以正常下載數(shù)據(jù)到 SPIFlash；抗干擾能 力強(qiáng)，可用于公共或者工業(yè)場合。 設(shè)計(jì)的初步假 想 與結(jié)構(gòu) 該系統(tǒng)首先需要一個(gè)中央數(shù)據(jù)處理系統(tǒng)初步?jīng)Q定使用單片機(jī)完成 ,與之配套需要有電源模塊 ,復(fù)位模塊 ,時(shí)鐘 模塊 ,和下載模塊 來組成一個(gè) 單 片機(jī)的 最小單元 ；其次需要數(shù)據(jù)采集 ,首選技術(shù)相對成熟而且高效低廉的的傳感器技術(shù) ； 然后還需要顯示和報(bào)警兩個(gè)模塊來完成整個(gè)系統(tǒng)功能的運(yùn)行 ； 如 圖 12 所示。 同時(shí)可以運(yùn)用到商場超市的人流量檢測 . 本設(shè)計(jì)采用 STC89C52單片機(jī)實(shí)現(xiàn)公共 場所動(dòng)態(tài)容量監(jiān)控 系統(tǒng)的 綜合應(yīng)用了單片機(jī)復(fù)位系統(tǒng)、定時(shí)器、計(jì)數(shù)器等知識， 主要運(yùn)用了 STC89C52 單片機(jī)， LED1602顯示模塊， AMS1117 穩(wěn)壓模塊， 激光檢測 ， 等元器件 運(yùn)作組成 。該系統(tǒng) 將 采用多傳感器的探測方式，使采集的數(shù)據(jù)更加準(zhǔn)確；數(shù)據(jù)傳送采用無線傳輸模式，節(jié)約成本、減少布線；供電系統(tǒng)采用直接供電和蓄電池供電雙路供電的方式，保證系統(tǒng)在突發(fā)事件導(dǎo)致主電源被切斷的情況下仍然可以繼續(xù)工作，當(dāng)災(zāi)害來臨的時(shí)候數(shù)據(jù)傳輸不會(huì)中斷。 經(jīng)過四種方案的比較以及本系統(tǒng)實(shí)際，由于該系統(tǒng)需要顯示兩個(gè)內(nèi)容，上述的 LCD 液晶顯示比較妥善，我們選擇 各方面 性價(jià)比 都比較 高的 LCD1602 液晶。 總體設(shè)計(jì)框圖 本設(shè)計(jì)系統(tǒng) 主要包括單片機(jī)最小單元和驅(qū)動(dòng)系統(tǒng)。相互連接的話，必須進(jìn)行電平轉(zhuǎn)換 ,由于電腦串口輸出電壓高達(dá) 12V，直接與單片機(jī)連接會(huì)燒壞芯片。內(nèi)部方式的時(shí)鐘電路如圖 45 所示，在 X1 和 X2 引腳上外接定時(shí)元件，內(nèi)部振蕩器就產(chǎn)生自激振蕩。 焦作大學(xué)畢業(yè)設(shè)計(jì) 第四章 系統(tǒng)及各模塊工作狀態(tài) 18 單片機(jī)計(jì)數(shù)模塊 計(jì)數(shù)采用 T0 和 T1，采用兩個(gè)計(jì)數(shù)器目的是可以判斷出人體移動(dòng)的方向，將 T1 路的傳感器安裝在離 場所 入口較近處，而 T0 路傳感器則安裝在離 場所 入口較遠(yuǎn)處，將 T0 和 T1 都設(shè)置成計(jì)數(shù)方式 2，初值為 FFH ，允許中斷， T 0 、 T 1 自然優(yōu)先級順序，當(dāng) T0 或 T1 口有 下降沿時(shí)會(huì)產(chǎn)生中斷并執(zhí)行中斷處理程序，如果有人進(jìn)入場所則計(jì)數(shù)器加 1，相反，如果有人離開場所則計(jì)數(shù)器減 1。當(dāng)有人進(jìn)入該場合時(shí)，語音播報(bào)“祝福語！”計(jì)數(shù)系統(tǒng)加 1。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 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 焦作大學(xué)畢業(yè)設(shè)計(jì) 致謝 29 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。還有，一直在幕后默默理解、支持和幫助我 的家人和朋友們。當(dāng)系統(tǒng)判斷為進(jìn)入時(shí)系統(tǒng)開始計(jì)數(shù)加 1，同時(shí)發(fā)送信號給顯示器并儲(chǔ)存。實(shí)際系統(tǒng)中，激光 G1的接收端接單片機(jī)的 ，激光 G2的接收端接單片機(jī)的 。 . 焦作大學(xué)畢業(yè)設(shè)計(jì) 第四章 系統(tǒng)及各模塊工作狀態(tài) 15 圖 44 系統(tǒng)供電原理圖 在硬件時(shí)鐘模塊中，為了在斷電后硬件時(shí)鐘能正常運(yùn)行，故采用主從雙電源供電方式。 PO 口（ Pin39～ Pin32）： 8 位雙向 I/O 口線，名稱為 ～ P1 口（ Pin1～Pin8）： 8 位準(zhǔn)雙向 I/O 口線，名稱為 ～ P2 口（ Pin21～ Pin28）： 8焦作大學(xué)畢業(yè)設(shè)計(jì) 第四章 系統(tǒng)及各模塊工作狀態(tài) 12 位準(zhǔn)雙向 I/O 口線，名稱為 ～ P3 口（ Pin10～ Pin17）： 8 位準(zhǔn)雙向I/O 口線，名稱為 ～ ， STC89C52 主要功能如表 31 所示。 但是對環(huán)境的抗干擾能力還是有限 ,容易受到光線和溫度的影響 .