Design of USB Data Acquisition Card Based on CPLD

摘要：

A kind of new type data acquisition card with USB interface is introduced, its hardware design solution is given. As the core of the whole system, USB interface chip receives the channel select command from host computer, then send it to analog switch matrix through I2C transfer chip and CPLD, realizes the selection of input channel. The control command sending flow is introduced in detail, and the firmware code of USB interface chip and CPLD is given. Software is designed according to USB protocol and used to send control command and receive data, which realizes the data acquisition of any a channel. This data acquisition card is adapt to be used data acquisition system which requests not very high speed, and provides a new way of low cost 、pint-sized and multi-channels data acquisition systems.

关键词： Data acquisition card USB CPLD

作者: LIU Yaozhou LIU Huanzhao ZHANG Hongren WANG Chunyou

作者单位: Ordnance Technology Institute, Shijiazhuang Mechanical Engineering College, Shijiazhuang 050003, P.R.China

会议类型: 国际会议

会议名称: 第七届国际测试技术研讨会

会议地点: 北京

会议语种:英文

在线出版日期: 2007-08-05（万方平台首次上网日期，不代表论文的发表时间）