基于AT89S51的新型打铃器的研制  

Manufacture of New Machine to be Used for Jow Based on AT89S51

作　　者：曹冬[1] 尹成群[1] 何玉钧[1] 

机构地区：[1]华北电力大学电子与通信工程系,河北保定071003

出　　处：《现代电子技术》2005年第10期79-81,共3页Modern Electronics Technique

摘　　要：介绍了一种由AT89S5 1单片机和DS12 887时钟芯片构成的新型打铃器。对打铃器的硬件构成、工作原理和部分软件的编程流程进行了详细地阐述。打铃器以DS12 887为基准时间,走时精确,万年历时间显示,可存储5 6条作息时间,掉电数据不丢失。在软件的编程中,调用AT89S5 1芯片自带的看门狗(WDT) ,增强了系统的抗干扰性能。经在多所学校测试,均实现了定时、存储和控制功能,具有很高的科研和商业价值。A new machine used for jow based on AT89S51 and DS12887 is introduced. The constitute of hardware, work principle and programming flow of part software are presented in detail. Its benchmark time comes from DS12887 and it times accurately. Time shows according to calendar. It can memory 56 schedule of work and rest, and don′t loss data when it isn′t supplied with electricity. During the programming of software, we use WDT of the chip of AT89S51,and it can enhance capability of antijamming. We achieve all the functions including time, memory and control by testing in some schools, and it has the high value of scientific research and business.

关 键 词：单片机 DS12887 看门狗 数据查询 

分 类 号：TP273.5[自动化与计算机技术—检测技术与自动化装置]