基于电容触摸芯片的高性能系统设计  

Design of a High-performance System Based on Capacitive Touch Chip

作　　者：姚敦红[1] 邓小武[1] 谢艾纾[1] 

机构地区：[1]怀化学院计算机工程系,湖南怀化418008

出　　处：《计算机测量与控制》2013年第8期2217-2220,共4页Computer Measurement &Control

基　　金：湖南省教育厅科研基金资助项目(11C0984);怀化学院重点学科建设资助项目

摘　　要：针对基于电容触摸感应芯片系统的高性能要求,研究了实现系统的I2C字节传输、事件驱动机制、低功耗策略和触摸判断与抗干扰能力算法等关键技术,在此基础上,设计了一种基于LISA112D芯片的软件系统;系统采用三层架构设计,对CDC、I2C、PMM和LISA112D等特定功能进行模块化封装,在TKStudio平台下采用SDCC C以及8051汇编语言实现;测试结果表明,系统能精确判断触摸的状态,具有较强的自适应环境能力,具有低功耗、抗电磁、耐低温、抗水滴等高性能特点。To solve the high--performance requirements of system based on capacitive touch sensor chip, the key technology to realize the system was studied, including I2C byte transmission, event--driven mechanism, low power strategy, touch judge and anti--interference algorithm, on the basis, a system software based on chip LIS112D is designed. The system adopts three--layer architecture, and the CDC, I2C, PMM and LISAl12D specific functional module are encapsulated, under the TKStudio platform, using SDCC C and 8051 assembly lan- guage to achieve the system. The test results show that the system can accurately determine the touch state, and have high--performance characteristics such as the strong adaptive ability to the environment, low power consumption, anti--electromagnetic, temperature resist- ance, anti--water droplets etc.

关 键 词：电容触摸芯片 LISA112D 软件系统 高性能 

分 类 号：TP212.9[自动化与计算机技术—检测技术与自动化装置]