為解決我國水位監測野外條件下長期無人看守的問題,研制開發了基于MSP430單片機的智能水位計。從其組成到各功能分別進行了詳細的介紹,該智能水位計不僅實現了水位數據的實時監測、記錄和定期采集等多種工作模式,而且提高了水位監測精度,實現了水位監測的智能化。
Abstract:
In order to solve the problems of long-term unmanned observation in the field water monitoring,an intelligence water-level meter based on MSP430 is developed composition and every function moduce of the water level meter was introduced in detail. It not only realizes water level data collection and storage, regularly gathering and so on, but also improves the water-level precision , finally realizes the intelligence.
第一章:MCS-51系列單片機的存儲結構(4學時)
① 掌握內部數據寄存器RAM的結構、用途和特點;
② 程序存儲器ROM的結構特點,編程中應注意的問題;
③ 片內、外程序存儲器的確定方法。
.. 第二章:MCS-51單片機指令系統及時序(4學時)
① 111條指令的功能分類;
② 指令的尋址方式;
③ 偽指令及匯編語言源程序的格式;
④ 與指令的相關時序。
第三章:MCS-51單片機內部模塊的功能介紹(8學時)
① 內部并行I/O端口的結構特點、使用中的注意事項;
② 定時/計數器的2種工作方式、4種計數模式;
③ 串行接口的4種工作模式的設定及波特率的計算;
④ 中斷系統的結構、中斷響應的過程和編程方法。
.. 第四章:MCS-51單片機系統的擴展及應用(8學時);
① 系統擴展的幾種方法;
② 外部程序、數據存儲器的擴展;
③ A/D、D/A轉換器與單片機的接口電路及編程方法;
④ 鍵盤掃描/動態顯示接口電路;
⑤ 單片機的監控電路等。
為了有效地提升鉛酸蓄電池的使用壽命,同時實現對充電過程的監控,設計出一種用單片機控制的36 V鉛酸蓄電池充電電源。本電路采用反激式拓撲,連續電流工作模式,電源管理IC設計在電源的副邊,由ELAN公司的EM78P258N單片機模擬,是用可編程器件模擬電源管理IC,實現智能電源低成本化的一次成功嘗試,通過對單片機的軟件設計實現了充電電源的狀態顯示、充電時間控制、報警、過溫保護、過壓保護、過流保護等功能。本充電器真正的實現了鉛酸蓄電池的三段式充電過程,其最高輸出功率可達90 W,效率約85%,成本不到20元,具有很高的市場競爭力。
Abstract: In order to extend the life of lead-acid battery efficiently and supervise the charging process meanwhile, a 36V lead-acid battery charge powe supply controlled by microcontroller is designed. The charger is flyback switching power supply and works in CCM mode. A EM78P258N microcontroller made by ELAN microelectronics corporation is used as power management IC which is designed at the secondary circuit. The project is a successful attempt to low-cost intelligent power used microcontroller simulating power management IC. The charger also has the functions of the status reveal, charge time control, alarming, thermal protect, current limit and overvoltage protect by the software design. The circuit actually implements the three-step charge process, whose power is up to 90W and whose efficiency can get 85%. The net cost of this charger is less than 20 RMB, so that the charger is of powerful market competitiveness.