基于LPC2478与ADS7843的工业触摸屏设计

采用LPC2478和ADS7843设计出的工业触摸屏是一种良好的工业现场人机交互方案。较全面介绍电路设计,针对工业现场的干扰误采样特点设计了循环滤波方式。较好地解决了一般触摸屏稳定性差,灵敏度不高的缺点,具有抗干扰、稳定性高、适用温度范围宽的特点,满足工业现场控制系统的要求,并在实践应用中取得了良好效果。

Design of LPC2478 and ADS7843-based Industrial Touch Screen

The industrial touch screen designed by the aid of LPC2478 and ADS7843 is a nice human-computer interaction program for the industrial field. The circuit design is introduced comprehensively. The loop filtering method was designed to avoid the sampling error of the industrial field. The disadvantages of poor stability and low sensitivity existing in the general touch-screen were overcome by the method, which has the characteristics of anti-interference, high stability and wide operating temperature range, can meet the requirements of industrial field control systems, and has achieved good results in practical application.