摘要
设计了基于PC的高速数据采集卡,研究了用GAL20V8实现I/O端口地址的编码方法,并给出用汇编语言编写从I/O端口读写数据的程序,最后通过实验验证了这一方法的有效性,并提出了对同一点多次采样并以平均值取代该点样值的误差改进措施。本数据采集卡精高度,可以采集到30GHz的高频信号。
A high-speed data acquisition card based on personal computer is designed. The coding method of I/O port address by GAL20V8 is studied and the program of reading and writing I/O port data is proposed. The experiment shows the coding method is right. Finally, the author proposes the error improving measure of sampling the same dot time after time and replaces the sampling dot with the averaging the sampling value. The data acquisition card has high resolution and can achieve 30GHz high frequency signals.
出处
《微计算机信息》
北大核心
2008年第13期109-110,103,共3页
Control & Automation
基金
国家自然科学基金仪器专项(50127402)
