摘要
针对便携式电子设备及可穿戴计算机系统对柔性、可折叠、多功能输入设备的需求,采用导电织物结合触摸屏控制器开发一种织物键盘,对设备组成原理、传感器材料选取、键盘结构设计、控制程序编写等3个关键问题进行探讨。测试了4种导电织物的面电阻值,根据标准差率最小原则,选取面电阻值为2 646Ω,标准差为114Ω的织物作为传感器材料;根据五线式触摸屏控制电路的功能要求设计了全织物的5层键盘结构,其中2层为导电织物层,实现按压点位置与电压信号的转换。采用Cypress公司的软件开发包,USB接口协议,在Microsoft VS2005开发环境下设计了计算机采集程序。经测试,织物键盘定位值的线性拟合R2值为0.999 5,提供了一种完全基于织物的高精度、柔性键盘解决方案。
For requirements on flexible,foldable and multifunctional input device from portable devices,the conductive fabric with 5-wire touch screen controller was used to develop a flexible input device.The surface resistance value of four conductive fabrics were tested,whose value were several hundred to thousands Ohms,the standard deviation were different.One fabric and one five-wire touch-screen control circuitry were used to design the fabric input devices,which include two conductive fabric layers to convert point location to voltage signals.With software development kit of Cypress,the computer data acquisition program was designed based on the VS2005 development environment.Through the linearity test,the flexible input device is useable.
出处
《现代电子技术》
2011年第8期151-153,156,共4页
Modern Electronics Technique
关键词
导电织物
柔性
输入设备
表面电阻
触摸屏
conductive fabric
flexible
input device
surface resistance
touch screen
