摘要
传统的红外触摸屏由于抗干扰能力不强,分辨率低,响应速度慢,不能满足复杂环境使用,无法达到用户需求。提出基于AT-mega88单片机的红外触摸屏设计方案,给出系统架构及应用。通过CVAVR编译并调试运行的程序流程,论述了基于此方案的触摸屏的工作原理,并分析串行通信数据传输流程。经上位机下位机联合测试及验证显示,所得数据与设计方案一致,证明此设计的有效性。
Traditional IR touch-screens cannot be used in the complex environment and also cannot meet the demand of users because of the poor anti-glare interference ability, the low resolution and the slow response. The article established the design of IR touch-screen based on AT-mega88 MCU, constructed the system architecture and application, discussed the program flow of compiling and debugging by the CVAVR and the principle of IR-touch screen, finally analyzed the RS232 communication and its frame structure. The design is proved to be effective by the result of data test and waveform verification.
出处
《机电产品开发与创新》
2010年第1期27-29,共3页
Development & Innovation of Machinery & Electrical Products
