基于51單片機超聲波測距畢業論文20829(已修改)

　

【正文】 題 目： 基于單片機超聲波測距儀的設計系 （部）：電氣系專 業 班：姓 名： 學 號：指導教師： 年 月 日超聲波測距儀的設計The design of a Silent WaveMeasure Distance摘 要隨著科技的發展，人們生活水平的提高，城市發展建設加快，城市給排水系統也有較大發展，其狀況不斷改善。但是，由于歷史原因合成時間住的許多不可預見因素，城市給排水系統，特別是排水系統往往落后于城市建設。因此，經常出現開挖已經建設好的建筑設施來改造排水系統的現象。城市污水給人們帶來了困擾，因此箱涵的排污疏通對大城市給排水系統污水處理，人們生活舒適顯得非常重要。而設計研制箱涵排水疏通移動機器人的自動控制系統，保證機器人在箱涵中自由排污疏通，是箱涵排污疏通機器人的設計研制的核心部分。控制系統核心部分就是超聲波測距儀的研制。因此，設計好的超聲波測距儀就顯得非常重要了。本設計采用以 AT89C51 單片機為核心的低成本、高精度、微型化數字顯示超聲波測距儀的硬件電路和軟件設計方法。整個電路采用模塊化設計，由主程序、預置子程序、發射子程序、接收子程序、顯示子程序等模塊組成。各探頭的信號經單片機綜合分析處理，實現超聲波測距儀的各種功能。在此基礎上設計了系統的總體方案，最后通過硬件和軟件實現了各個功能模塊。相關部分附有硬件電路圖、程序流程圖。經實驗證明，這套系統軟硬件設計合理、抗干擾能力強、實時性良好，經過系統擴展和升級，可以有效地解決汽車倒車、建筑施工工地以及一些工業現場的位置監控。關鍵詞：AT89c51。 超聲波；測距AbstractWith the development of science and technology, the improvement of people39。s standard of living, speeding up the development and construction of the city. urban drainage system have greatly developed their situation is constantly improving. However, due to historical reasons many unpredictable factors in the synthesis of her time, the city drainage system. In particular drainage system often lags behind urban construction. Therefore, there are often good building excavation has been building facilities to upgrade the drainage system phenomenon. It brought to the city sewage, and it is clear to the city sewage and drainage culvert in the sewage treatment system. fort is very important to people39。s lives. Mobile robots designed to clear the drainage culvert and the automatic control system Free sewage culvert clear guarantee robot, the robot is designed to clear the culvert sewage to the core. Control System is the core ponent of the development of ultrasonic range finder. Therefore, it is very important to design a good ultrasonic range finder. At the core of the design using AT89C51 lowcost, high accuracy, Micro figures show that the ultrasonic range finder hardware and software design methods. Modular design of the whole circuit from the main program, pre subroutine fired subroutine receive subroutine. display subroutine modules form. SCM prehensive analysis of the probe signal processing, and the ultrasonic range finder function. On the basis of the overall system design, hardware and software by the end of each module. The research has led to the discovery that the software and hardware designing is justified, the antidisturbance petence is powerful and the realtime capability is satisfactory and by extension and upgrade, this system can resolve the problem of the car availably, building construction the position of the workplace and some industries spot supervision.Key words:AT89S52。 Silent Wave；Measure Distance 目 錄摘 要I AbstractII 緒論1 課題設計的目的及其意義1 超聲波測距儀的設計思路1 課題設計的任務和要求21 課題的方案設計與論證3 系統整體方案的設計3 系統整體方案的論證32 系統的硬件結構設計18