一种灵敏度可调和触摸强度可测的触摸感应电路  

Touch Sensitive Circuit with Adjustable Sensitivity and Measurable Touch Strength

作　　者：吴海宏 许伟 傅建军 WU Haihong;XYU Wei;FU Jianjun(China Key System&Integrated Circuit Co.,Ltd.,Wuxi 214072,China)

机构地区：[1]中科芯集成电路有限公司

出　　处：《电子与封装》2019年第11期37-40,共4页Electronics & Packaging

摘　　要：针对当前触摸按键电路存在灵敏度不能配置的问题,在传统触摸按键基础上提出了一种方法,可以实现灵敏度配置和触摸强度检测。通过设置一个8 bit寄存器来调节触摸感应模块的电流,通过对电流的调节达到对感应模块频率的调节,从而实现灵敏度调节的目的。同时创新设计了触摸强度检测功能,并对触摸强度按照低、中、高进行3种情况输出检测结果。通过灵敏度配置和强度检测结合,可以更精确和快速地设置与环境相匹配的灵敏度。According to the sensitivity of the current touch circuit can’t be configured, a method to realize the sensitivity configuration is presented. An 8-bit register is set to adjust the current of the touch sensing module, and the frequency will be changed by changing the current, then the purpose of sensitivity adjustment is achieved. At the same time, this circuit has a new function of touch strength detection, and outputs three results of low, medium and high touch intensity. By integrating the sensitivity configuration and intensity detection, the sensitivity can be set more accurately and quickly.

关 键 词：触摸感应 频率校准 频率检测 灵敏度 感应强度 

分 类 号：TN402[电子电信—微电子学与固体电子学]