摘要
嵌入式系统中为实现人机交互,常采用液晶显示屏和矩阵键盘作人机接口。文章采用一个192×64的液晶显示屏作为显示界面,两个ZigBee节点实现无线远程控制,液晶模块上还连接有一个矩阵键盘,可通过它发送命令到控制系统。液晶模块可实现中英文混排、LOGO位图显示、反显等一系列功能。实测无线通信距离最大可达到50m,20m以内可实现稳定的数据传输。该人机接口可用于无线抄表、数控等控制系统中。
LCD and matrix keyboard are used usually in embedded systems for the intercourse between the user and the machine.In this paper,a 192×64 LCD is used as the monitor,two ZigBee nodes are used for wireless control,and a matrix keyboard is used to connect with the LCD module through which the user can send command to the control system.The LCD module can display Chinese and English characters together,homochromous bitmaps,and objects in reverse.The measured maximum distance can reach to 50 m and stable communication can be realized within 20 m.This man-machine interface can be used in wireless meter reading system,numeric control system,etc.
出处
《液晶与显示》
CAS
CSCD
北大核心
2010年第6期841-845,共5页
Chinese Journal of Liquid Crystals and Displays
关键词
ZIGBEE
人机接口
液晶
无线控制系统
ZigBee
man-machine interface
liquid crystal
wireless control system
