一种实时性强并且可移植的按键消抖方法  

High Real-time and Portable Method for Shaking Elimination of Keystroke

作　　者：胡传志[1,2] 沈建华[2] 李跃华[1] 

机构地区：[1]南通大学计算机科学与技术学院,南通226019 [2]华东师范大学

出　　处：《单片机与嵌入式系统应用》2015年第7期30-33,共4页Microcontrollers & Embedded Systems

基　　金：南通市应用研究项目(BK2012068);南通大学自然科学基金(13Z002)

摘　　要：延时消抖方法是嵌入式系统中常见的按键消抖方法,其通过延时程序跳过抖动态,该方法虽然可行,但既不具备实时性,也不具备可移植性。针对这种情况,提出了一种新的按键消抖方法,该方法通过一个累乘算法来有效识别按键抖动态和稳定态的区别,达到消除抖动影响的目的。实验结果表明,该方法不仅实时性强而且具备可移植性。Time-lapse method is a common method of shaking elimination of keystroke in the embedded system,it skips shaking-state via a time-lapse program,but this method has neither real-time performance nor portability. For this reason,a new method of shaking elimination of keystroke is proposed. It recognizes the difference between the shaking-state and steady-state via an algorithm of accumulated multiplication,so that it can eliminate the influence of shaking. The experimental results show that the method has both high real-time performance and portability.

关 键 词：嵌入式系统 按键消抖 抖动态 稳定态 实时性 

分 类 号：TP311.54[自动化与计算机技术—计算机软件与理论]