基于单片机的示波器键盘模块设计  

Design of oscilloscope keyboard module based on microcontroller

作　　者：王励[1] 李云彬[1] 

机构地区：[1]中国电子科技集团公司第41研究所研发六部,青岛266555

出　　处：《电子测量技术》2014年第5期52-56,共5页Electronic Measurement Technology

摘　　要：根据示波器的功能特性设计了键盘模块,采用单片机控制移位寄存器,实现对7*8键盘矩阵的管理。结合硬件模块的功能,设计了单片机循环扫描算法。同时,通过分析按键与旋钮的电气特性,尤其是旋钮旋动时电路逻辑的变化特性,设计了一种旋转编码器的鉴相算法,从而实现了单片机对按键与旋钮编码。According to the oscilloscope operating features,we designed the keyboard module.By controlling the shift register,the microcomputer can manage the keyboard matrix of 7 × 8.Combining the characteristics of the hardware module,we designed a loop scanning algorithm for the microcomputer.Meanwhile,by analyzing of the electrical characteristics of buttons and knobs,especially the variation of the circuit logic when rotating the knob,we have designed the algorithm of the rotary encoder＇s phase detected.Therefore,the microcomputer board completed encoding for all the buttons and knobs.

关 键 词：键盘模块 单片机 键盘矩阵 鉴相算法 

分 类 号：TP368.1[自动化与计算机技术—计算机系统结构]