新一代中文阅读视力检查仪的设计升级研究

The Upgraded Design Research of a New-Version Chinese Reading Acuity Test Instrument

摘要:

中文阅读视力检查仪是专门为汉语阅读背景人群设计和开发的视功能检查工具,原版检查仪存在屏幕亮度无法自适应调节、屏幕高度不能始终与患者视线高度持平、对应的小程序功能较为单一等问题；针对以上问题,采用定制的段式液晶显示屏、蓝牙4.2解决方案、单片机主控模块,依托Android Studio程序开发平台,设计和开发了新一代中文阅读视力检查仪及其上位控制APP。新版检查仪在原有基础上,增加了通过APP连接蓝牙控制丝杆滑台调节屏幕位置和自动调节阅读视力检查仪屏幕亮度的功能,进一步完善了仪器的软硬件设计。实验结果表明,检查仪具有良好的适配性,满足了为不同年龄段低视力患者的诊断和康复提供技术支持的需求。

Abstract:

The Chinese reading acuity test instrument is a visual function inspector tool specially designed and developed for the Chinese readers. However, when using the previous version of test instrument, it fails to adjust the luminance of the screen adaptively or automatically keep the height of the screen always be equal to the patients’ sight level, and the function of corresponding Mini Program is relatively limited. In response to the above problems, a new version of Chinese reading acuity test instrument and its corresponding APP was designed and developed by customized segment LCD display, Bluetooth 4.2 solution, STM8 main-control module, and the Android Studio program development platform. The new version of the test instrument is equipped with the new functions of adjusting the position of screen by controlling screw slide table and the luminance of the screen automatically through the APP connecting with the Bluetooth. These new outbreaks improve the design of software and hardware of the test instrument. The experimental results show that the instrument has good adaptability and meets the needs of providing technical support for the diagnosis and rehabilitation of patients with low vision in different ages.