基于ARM内核处理器及SX8644芯片的触摸屏控制器的设计及其应用  

The design and application of touch screen controller based on ARM core processor and the SX8644 chip

作　　者：郑高辉 

机构地区：[1]浙江帅康电气股份有限公司,浙江余姚315491

出　　处：《家电科技》2017年第4期68-71,共4页Journal of Appliance Science & Technology

摘　　要：从电容触摸感应原理着手,运用ITO导电玻璃作为触摸感应电极,设计了基于ARM内核处理器及SX8644芯片的触摸屏控制器,其中电容感应芯片SX8644通过实时监测ITO导电玻璃感应电极的电容,计算其触摸前后的电容差值并与设定的值进行比较分析来输出相应点的电容变化量,而ARM内核处理器STM32F103C则通过相应的算法及逻辑处理,输出相应的逻辑信号,再由驱动电路驱动TFT真彩显示屏及控制执行部件动作,达到吸油烟机人机界面触摸控制的目的。Due to the principle of capacitive touch sensing and using ITO conductive glass as touch-sensitive electrode, designs a touch-screen controller which is based on ARM core processor and the SX8644 chip. The capacitive sensing chips SX8644 monitor the capacitance of ITO conductive glass sensing electrode and then calculates the capacitance value before and after touching, comparing and analyzing with the set value and finally output the corresponded capacitance variation. ARM core processor STM32F103 C applies the appropriate algorithms and logic processing to output logic signals, drive circuit driving TFT color display and control components. Then achieve the purpose of cooker hood human-machine interface touch-control.

关 键 词：电容触摸感应原理 ITO导电玻璃 SX8644 STM32F103C PCB板设计 

分 类 号：TM925.57[电气工程—电力电子与电力传动]