【正文】 s absolute form and the function. The monolithic integrated circuit is pletely defers to the embedded system request design, therefore the monolithic integrated circuit is the most typical embedded system. The early monolithic integrated circuit is only according to the embedded applied technology request design puter single chip integration, therefore famous monolithic integrated circuit. Afterward, the monolithic integrated circuit to satisfy embedded strengthens its control function and the periphery interface function unceasingly using the request, particularly prominent control function, therefore internationally rectified names the monolithic integrated circuit for the micro controller (MCU, Microcontroller Unit). the 2. Monolithic integrated circuit constitutes the modern electron system will bee mainstream electron system the monolithic integrated circuit will be the ponent level puter system, it may insert to any object system, realizes the intellectualized control. Slightly 基于單片機的實時溫度監(jiān)控系統(tǒng)設計 33 to miniature machinery, like wristwatch, hearing aid. The integrated device level39。 autopilot, turbine observation system and so on. The embedded system first is a puter system, next it is inserted to the object system, realizes in the object system object functions and so on request data acquisition, processing, condition demonstration, output control, because inserts in the object system, embedded system39。s embedded application, the early embedded system for the generalpurpose calculator after the reequipping inserts to the object system39。s principle), needs plex being similar in puter39。s is also quite widespread in medical equipment domain application the in medical equipment use, for example medical lifesupport machine, each kind of analyzer, guardianship meter, ultrasound diagnosis equipment and hospital bed ringing system and so on. 6. Certain specialpurpose monolithic integrated circuit design uses in each kind of largescale electric appliance39。s munication facility has basically realized the monolithic integrated circuit intelligent control, from the handset, the telephone, the small program controlled switch, the building automatic correspondence ringing system, the train wireless munication, arrived at the mobile phone which again in the routine work found at everywhere, the colony mobile munication, radio inter and so on. 5. Monolithic integrated circuit39。s application the , may carry on the data munication very conveniently with the puter, for provided the extremely good 基于單片機的實時溫度監(jiān)控系統(tǒng)設計 31 physical conditions application between the puter work and munication facility39。 application , present39。s sensor, may realize such as physical quantity and so on voltage, power, frequency, humidity, temperature, current capacity, speed, thickness, angle, length, degree of hardness, element, pressure surveys. Uses the monolithic integrated circuit control to cause the instruments and meters digitization, the intellectualization, the microminiaturization, and the function pares uses the electron or the digital circuit is more formidable. For example precise measurement equipment (dynamometer, oscilloscope, each kind of analyzer). 2. May constitute various control system, the data acquisition system in industrial control39。s intellectualized management and process control, approximately separable following several categories: 1. Monolithic integrated circuit has the volume on smart instrument measuring appliance39。s control, as well as program control toy, electronic pet and so on, these cannot leave the monolithic integrated circuit. Say nothing of automatic control domain robot, intelligent measuring appliance, medical instrument. Therefore, monolithic integrated circuit39。s each kind of intelligent IC card, the civil luxury car39。s work munication and the data transmission, the industrial automation process39。s navigation equipment, on the airplane each kind of measuring appliance39。s application domain At present the monolithic integrated circuit seeps each domain which lives to us, which domain was nearly very difficult to find not to have monolithic integrated circuit39。s 基于單片機的實時溫度監(jiān)控系統(tǒng)設計 29 development has formed the SOC tendency naturally. Along with the microelectronic technology, the IC design, the EDA tool39。s on chip maximized solution。s road of independent development, to the MCU stage development39。s best architecture. “the innovation pattern” obtains successfully, has established SCM and the generalpurpose calculator pletely different development path. In founds on the embedded system independent development path, Intel Corporation has lasting achievements. 2. MCU namely micro controller (Micro Controller Unit) the stage, the main technological development direction is: Expands unceasingly when satisfies the embedded application, the object system request39。 可以說這次的畢業(yè)設計并不是我一個人的成果，而是屬于我的導師和幫助過我的同學們還有我所共有的！ 總之，此次 我收獲了很多， 在自己動手操作的過程中也遇到了好些問題，最終都被完滿的解決，既讓我懂得了工作的艱辛，也讓我體會到了解決難題后的快樂，最重要的是在這個過程中我學會了解決問提的辦法 既 為大學四年劃上了一個完美的句號，也為將來 進入社會做了 一個很好的鋪墊。 “ 授人以魚不如授人以漁 ” ，置身其間，耳濡目染，潛移默化，使我接受了全新的思想觀念，領會了基本的思考方式 ，對我以后的人生來說也是一筆寶貴的精神財富。通過這次學習，并親自動手制作焊接，學到了很多，也加強了很多大學學習的基本技能， 是理論與實際 得到很好的結合，在這個過程中 ，也和同學進行了很多溝通，交流，體會到了團隊合作的樂趣 ，經過最后的調試，系統(tǒng)成功的實現(xiàn)了設計功能， 由于時間有限和本身知識水平的欠缺，我們認為本系統(tǒng)可能還有需要改進和提高的地方 。 圖 24 數(shù)據(jù)刷新子程序 流程圖 溫度數(shù)據(jù)移入顯示寄存器 十位數(shù) 0？ 百位數(shù) 0？ 十位數(shù)顯示符號百位數(shù)不顯示 百位數(shù)顯示數(shù)據(jù)（不顯示符號） 結束 N N Y Y 基于單片機的實時溫度監(jiān)控系統(tǒng)設計 25 第 五 章 結論 本文針對溫度測量方法的現(xiàn)狀和所要研究問題的分析，提出了一種 采用單總線式數(shù)字溫度傳感器 DS18B20 芯片，并運用 AT89S52 作為控制芯片的溫度測量控制系統(tǒng)，接著從單片機的結構，原理分析起，再熟悉了 AT89S52 的工作原理及使用方法后，詳細的分析了 DS18B20 芯片的結構、工作原理、時序和測量溫度的方法，最后又簡要了解下 LED