A Synchronous Data Acquisition System Based-on PC104-plus
This paper provides a synchronous data acquisition system based on PC104-plus bus. The system consists of stacked sampling cards plugged into PC104-plus bus in industrial personal computer and the monitoring software of host computer. Every card acts as a basic module which has four analog channels with differential inputs, sixteen digital input channels and sixteen digital signal output ports, meanwhile with one audio signal input channel and one audio output channel. The card controlled by ARM7 MCU has tunable sample rate varying from 0 to 100Ksps and four amplify degrees. To decrease input signal noise, the card has tunable digital filters which would set bandwidth correspond to sample rate. All the four analog signals are converted synchronously to 16-bit digital signals. In the cases of many cards stacked in PC104-plus bus, all the analog signals are sampled synchronously with time difference within two nanoseconds, which compose a multi-points synchronous sample system. The analog data can be stored in system or be played back to an audio output port.
data acquisition system synchronous PC104-plus bus clock Dual Port RAM
Wang Xinhua Zhang Xianghong
School of Information and Electronic Engineering, Zhejiang University of Science and Technology, Chi The Quartermaster Institute of the General Logistics Department of the P.L.A, China, 100010
国际会议
第八届国际测试技术研讨会(8th International Symposium on Test and Measurement)
重庆
英文
3190-3193
2009-08-01（万方平台首次上网日期，不代表论文的发表时间）