【正文】 s ball is in (7274 cm) in circumference. The covering of the ball is leather, rubber, position, or synthetic, although leather covers only are dictated by rules for college play, unless the teams agree otherwise. Orange is the regulation color. At all levels of play, the home team provides the ball. Inflation of the ball is based on the height of the ball39。s National Basketball Association (WNBA) playoffs. And it has also made American heroes out of its player and coach legends like Michael Jordan, Larry Bird, Earvin Magic Johnson, Sheryl Swoopes, and other great players. At the heart of the game is the playing space and the equipment. The space is a rectangular, indoor court. The principal pieces of equipment are the two elevated baskets, one at each end (in the long direction) of the court, and the basketball itself. The ball is spherical in shape and is inflated. Basketballs range in size from in (7276 cm) in circumference, and in weight from 1822 oz (510624 g). For players below the high school level, a smaller ball is used, but the ball in men39。t e naturally or easily to them, and so they are trying to follow a predetermined set of rules. Some individuals with autism have normal intelligence, and many have special talents in areas such as music or memory. However, individuals with autism may have other mental or emotional problems that coexist with their autism. Some of these other disorders may include impulse control disorders, obsessivepulsive disorder , mood and anxiety disorders, and mental retardation . PSYCHOLOGICAL AND FAMILY FACTORS. Although Henry Maudsley, in the late 1800s, was the first psychiatrist to focus on very young children with mental disorders, it was the psychiatrist Leo Kanner who coined the phrase early infantile autism in 1943. Kanner believed that the parents of children with autistic behaviors were emotionally cold and intellectually distant. He coined the term refrigerator parents to describe them. His belief that parental personality and behavior played a powerful role in the development of autistic behaviors left a devastating legacy of guilt and selfblame among parents of autistic children that continues to this day. Recent studies are unequivocal, however, in demonstrating that parents of autistic children are no different from parents of healthy children in their personalities or parenting behaviors. In fact, many families with an autistic child also have one or more perfectly healthy children. Because autistic children can be extremely sensitive to change, any change within the family situation can be potentially traumatic to the autistic child. A move, divorce, birth of a sibling or other stressors that occur in the lives of most families may evoke a more extreme reaction from an autistic child. While there is no single neurological abnormality found in children with autistic disorders, some research using noninvasive brain imaging techniques such as magic resonance imaging (MRI) suggests that certain areas of the brain may be involved. Several of the brain areas being researched are known to control emotion and the expression of emotion. These areas include the temporal lobe (large lobe of each side of the 北京化工大學(xué)北方學(xué)院畢業(yè)設(shè)計（論文） 36 brain that contains a sensory area associated with hearing), the limbic system, the cerebellum, the frontal lobe, the amygdala, and the brain stem, which regulates homeostasis (body temperature and heart rate). Recent research has focused particularly on the temporal lobe because of the finding that previously healthy people who sustain temporal lobe damage may develop autisticlike symptoms. In animal research, when the temporal lobe is damaged, social behavior declines, and restless, repetitive motor behaviors are mon. When measured by MRI, total brain volume appears to be greater for those with autistic disorders. Other neurological factors include lesions to the brain, congenital rubella, undiagnosed and untreated phenylketonuria (PKU), tuberous sclerosis, and Rett39。 另外，要感謝在大學(xué)期間所有傳授我知識的老師，是你們的悉心教導(dǎo)使我有了良好的專業(yè)課知識，這也是論文得以完成的基礎(chǔ)。論文的順利完成，也離不開其它各位老師、同學(xué)和朋友的關(guān)心和幫助。 卜 老師指引 了 我論文的寫作方向和架構(gòu)，并對本論文初稿 進行逐字批閱，指正出其中誤謬之處，使我有了思考的方向， 她循循善誘的教導(dǎo)和不拘一格的思路給予我無盡的啟迪， 她 嚴謹細致、一絲不茍的作風(fēng)，將一直是我工作、學(xué)習(xí)中的榜樣。論文得以完成，要感謝的人實在太多了，首先要感謝 卜旭芳老師 因為論文是在 卜 老師的悉心指導(dǎo)下完成的。如今，伴隨著這篇畢業(yè)論文的最終成稿，復(fù)雜的心情煙消云散，自己甚至還有一點成就感。 該系統(tǒng) 可 根據(jù)大氣的 溫 濕度 以及光照度 來控制電動機帶動傳動輪向室內(nèi)移動或者向室外移動完成其伸縮功能，完全實現(xiàn) 收晾衣服的 自動化控制 。 信號轉(zhuǎn)換與輸送系統(tǒng)是由單片機來完成的，單片機接受到 DHT11 溫濕度傳感器的溫濕度信號后將其處理轉(zhuǎn)化為所需的穩(wěn)定電信號 。檢查 I/O 口是 否有重定義和發(fā)生沖突等容易出現(xiàn)問題。 圖 JDT8052XP 仿真器連接圖 運用 JDT8052XP 仿真器在 Keil uVision4 上編和調(diào)試寫程序很方便、快捷， 現(xiàn)將各個小的子程序調(diào)好，并檢查是否有錯誤和警告的出現(xiàn)。實時監(jiān)測 和顯示目標(biāo) MCU 的 TXD 引腳輸出支持 Keil 的 printf函數(shù)打印輸出具備了實時跟蹤內(nèi)部變量變化和程序輸出的功能內(nèi)部具有完善的保護電路避免了使用中由于誤操作所引起的仿真器損毀。 北京化工大學(xué)北方學(xué)院畢業(yè)設(shè)計（論文） 30 圖 電路原理圖 北京化工大學(xué)北方學(xué)院畢業(yè)設(shè)計（論文） 31 第 5 章 系統(tǒng)整體調(diào)試 按電路圖接好電路之后，就在 Keil uVision4 上編寫程序并用 JDT8052XP 仿真器作整機調(diào)試， JDT8052XP 仿真器兼容 Keil 公司 的 Kiel C51 開發(fā)環(huán)境 ,用戶能夠直 接在功能強大的集成環(huán)境下進行軟件設(shè)計和硬件調(diào)試。常閉觸點自動斷開， V2 截止 ，繼電器 J7 失電，開關(guān)斷開，電機停轉(zhuǎn)。繼電器 J7得電，常開觸點閉合，控制電機的反轉(zhuǎn)，晾衣架伸出，自動實現(xiàn)晾衣動作。當(dāng) 溫 濕度傳感器干時，J1 自 動斷開，使電路處于正常狀態(tài)。常閉觸點自動斷開， V1 截止，繼電器 J4 失電，開關(guān)斷開，電機停轉(zhuǎn)。 J1開關(guān)代表 溫 濕度傳感器，當(dāng)下雨時．水使 J1 導(dǎo)通，運放 U1 輸出低電平，通過 U2(555 集成電路 )單穩(wěn)觸發(fā)電路，輸出高電平，定時時間 T=，其中 RPl 用于調(diào)節(jié)定時時間， J3為行程開關(guān) (常閉觸點 )，用于控制衣架收回的幅度， U2 輸出高電平使 V1 飽和導(dǎo)通，繼電器 J4得電，常開觸點閉合，控制電機的正轉(zhuǎn)，晾衣架收回，自動實現(xiàn)收衣動作。 圖 溫度檢測流程圖 系統(tǒng)復(fù)位 發(fā) 匹配 ROM 指令 發(fā) 64 位 ROM 碼 發(fā)溫濕度轉(zhuǎn)換命令 系統(tǒng)復(fù)位 讀數(shù)據(jù)至內(nèi)存 發(fā)讀暫存命令 發(fā) 64 位 ROM 碼 發(fā)匹配 ROM 指令 完成轉(zhuǎn)換？ 是 返回 否 北京化工大學(xué)北方學(xué)院畢業(yè)設(shè)計（論文） 28 濕度測試采用 555 轉(zhuǎn)換電路 來測試，系統(tǒng)首先通過外部定時器測出 555轉(zhuǎn)換電路的輸出頻率，根據(jù)測試頻率利用公式 計算出濕度傳感器阻抗，通過上面 DHT11 對溫度的測試，這里讀取溫度值，查詢下表 。單片機首先發(fā)送復(fù)位脈沖，該脈沖使信號線上的 DHT11 芯片都被復(fù)位，接著發(fā)送ROM 操作命令，使得序列號編碼匹配的 DHT11 被激活。 接口 定義系統(tǒng)應(yīng)用如下： sbit DQ=P1^7； //數(shù)據(jù)傳輸線接單片機的相應(yīng)管腳 sbit key1=P1^3； //溫濕度切換 sbit key2=P2^4； //電機正轉(zhuǎn)使衣架打開 sbit key3=P3^5； //電機反轉(zhuǎn)使衣架收回 系統(tǒng)初 始化還要定系統(tǒng)中的數(shù)據(jù)變量如： bit FLAG； extern unsigned char LcdBuf[5]； INT8U LcdBuf[5]={0}； unsigned char tempL=0； //設(shè)全局變量 unsigned