51芯片4*4列阵按键c语言程序,单片机城中社稷.doc
單片機城中社稷
基于單片機的乳粉包裝稱重控制設計
摘 要
本論文在分析了國內外稱重技術發展的基礎上,著重對一個用于工業控制且功能較齊全的自動稱重系統進行設計。隨著自動化和管理現代化的進展,自動在線稱重,快速動態稱重在整個稱重系統中有了很大的發展。因此,進一步采用新技術,開發各種自動稱重系統和提高稱重的準確度已經成為了多數國家科技發展的重中之重。
本稱重系統除了有關于數據的收集,處理,運行和通信之外,還有更多的其他輔助功能:自動稱重系統除了能夠儲存數據資料到資料庫中,還可以將資料以打印稿的形式呈現。最重要的是,該自動稱重系統還可以隨時對資料庫進行訪問和查詢。
本論文所設計的自動稱重系統是應用于工業上的乳粉包裝自動稱重中的,它的實現有兩個過程,第一階段由異步電機帶動粗螺旋推進器給料,這一階段可看成為粗調過程,給料重量一定要小于額定重量。第二階段由步進電機帶動細螺旋推進器進料,可看成是細調過程,使實際重量等于要求的額定重量。
本稱重系統采用單片機AT89C51為控制核心,實現稱重儀的基本控制功能。系統的硬件部分包括數據采集和數據處理兩大部分,其中數據采集部分由稱重儀模擬器、信號的前級處理(采用儀表放大器INA121)和 雙積分A/D 轉換部分組成。由于稱重儀設計中電路的精度及抗工頻干擾能力要求較高,故選用精度較高的儀表放大器INA121和抗工頻干擾能力較強的雙積分A/D轉換器MC14433。
本系統通過應用傳感器,各種芯片及單片機使得該稱重系統的實際操作性更強,便于應用于工業上。
雙積分A/D轉換;儀表放大;AT89C51單片機;數據采集
The Design of Weighing and Packing of Milk Powder ased on Singlechip
Abstract
Basis on the researching of the progress of the weighing technology, this paper introduces the development of automatic weighing system which has a complete function.
With the progress of automation in industry and modernization in management, there is much progress in weighing online, fast and dynamic weighing and system of weighing.Adopting newer technology, developing diversified automatic weighing system, improving accuracy and enhancing network function are emphasized in every country nowadays. .
Besides the function of collecting, processing, displaying and communication of data about weight, the automatic weighing system can also save data in database and print data in report form. It can also visit and query the records in database.
The article introduced the automatic named weighing system which is applied in the industry, its realization has two processes, the first stage is the spiral propeller by the asynchronous machine belt to afford the material, this age which is worthy of looking at is because of the coarse adjustment process,certainly it must be smaller than the schedule weight for the material weight. The second stage is impetus which is much more precise than the first spiral propeller feeding, it may be
創作挑戰賽新人創作獎勵來咯,堅持創作打卡瓜分現金大獎總結
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