高精密多路計時器

電子機電論文編號:JD736  論文字數:7785,頁數:19

目    錄
摘  要 3
關鍵詞 3
Abstract 4
Key words 4
1 引言 5
2 設計方案 5
3 硬件電路 5
3.1 系統流程圖 5
3.2 電源電路 6
3.3 操作控制電路 6
3.3.1器件功能與介紹 6
3.3.2 PT2262編碼發射電路 8
3.3.3 PT2272譯碼接收電路 9
3.4 單片機系統電路 10
3.4.1 89C51單片機引腳功能 10
3.4.2 復位電路 12
3.5 CD4511驅動譯碼 13
3.6 74LS138譯碼位選 15
3.7 顯示部分 16
4 軟件流程圖 17
5 理論分析 18
參考文獻 19
致謝 19

摘  要
近年來，工業生產發展迅速，很多工業生產需要精確計時來控制生產。為了節約能源和方便工業生產控制管理，迫切需要一種裝置，即高精密多路計時器。高精密多路計時器各個功能模塊依次為：電源電路、按鍵控制電路（PT2262編碼發射電路和PT2272譯碼接收電路）、AT89C51單片機復位電路、AT89C51單片機系統控制電路、CD4511譯碼驅動電路、74LS138位選電路（7407或MC1413驅動數碼管顯示）。
本文將詳細介紹AT89C51單片機實現高精密多路計時器的設計。

關鍵詞： 計時器   AT89C51單片機    高精密    工業生產    動態掃描顯示

Abstract
In recent years, industrial production is fast growing, much industrial production needs accurate timing to control production. In order to save the energy and facilitate the control and management of industrial production , need a kind of device urgently, i.e. the high-accuracy time-recorder of many ways. High-accuracy time-recorder each function module of many ways is successively: Circuit of the power , control circuit of the button (PT2262 code launches the circuit and PT2272 decipher and receives the circuit), AT89C51 one-chip computer is restored to the throne in the circuit, AT89C51 one-chip computer systematic control circuit , CD4511 decipher urge circuit, Select the circuit in 74LS138 location. (7407 or MC1413 urge the number to be in charge of revealing ).
This text introduce AT89C51 one-chip computer realize high-accuracy many way design of time-recorder in detail.

Key words：Time-recorder    AT89C51 one-chip computer    High-accuracy    Industrial production    dynamically Scan and display