摘要
目的:为了避免传统视标仪存在的诸多不便,减少视力检查误差,研制一种高清3D视标仪。方法:用高清3D液晶面板作为视标显示器件,小型工控主板和LINUX系统作为图像处理的软硬件系统,对视标图像做出实时变换处理;单片机作为遥控信号的解码装置并控制工控主板的动作。结果:在高清3D液晶显示器上,该高清视标仪可完美显示并能自由切换各国、各类2D、3D视标图像。结论:该高清视标仪大大提高了传统视标仪的性能,符合视力检查规范,提高了视力检查的准确性,可保障更多人的眼睛健康。
Objective To develop a high-definition 3D visual acuity instrument to eliminate the deficiencies of the traditional one.Methods A high-definifion 3D liquid crystal faceplate was used as the display unit, a mini industrial control mainboard and LINUX system were for the software and hardware system of real-time image processing. A microcomputer was employed to decode the remote signals and control the motion of the mainboard. Results Both 2D and 3D visual acuity images of countries could be displayed on the high-definition 3D LED. Conclusion The high-definition visual acuity instrument can meet the visual examination standard and enhance the accuracy of the examination.
出处
《医疗卫生装备》
CAS
2014年第5期29-33,共5页
Chinese Medical Equipment Journal
关键词
高清视标仪
USB接口
编码解码
背光驱动
high-definition visual acuity instrument
USB interface
encoding and decoding
backlight driver
