基于STC单片机的触摸屏五点校准算法设计与实现  

Design and implementation of a kind of five-point arithmetic for calibrating the touchscreen based on STC MCU

作　　者：杨伟钧[1] 戴青云[1] 张辉[2] 何最红[3] 

机构地区：[1]广东工业大学信息工程学院,广州510090 [2]广东教育学院物理系,广州510303 [3]广州大学实验中心,广州510006

出　　处：《仪器仪表用户》2008年第3期79-81,共3页Instrumentation

摘　　要：本文针对触摸屏在实际应用中的偏差,提出一种用于校准的五点算法。本系统采用高性能单片机作为主控单元,通过模数转换芯片AD S7845,采样触摸屏数据,经过校准传送到LCD显示器显示坐标。文中给出了数据采集终端软硬件的具体实现方案和五点校准的算法,并把它应用到实际生产中,有效地实现了触摸屏校准功能。Pointing to the deviation of touch screen in actual application, a kind of five - point calibration algorithm is presented in this paper. The data, sampled from touch screen, with high-performance MCU as the control unit and AD converter ADS7845, are calibrated and transmitted to the LCD display. The data - acquisition project and five-point calibration algorithm are presented and used in actual production, which realize calibration error of touch screen.

关 键 词：STC单片机 触摸屏 五点校准算法 CRC校验 

分 类 号：TP274[自动化与计算机技术—检测技术与自动化装置]