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Development of induction current acquisition device based on ARM
Author(s): Yanju Ji; Xiyang Liu; Wanyu Huang; Jiang Yao; Guiyang Yuan; Luan Hui; Shanshan Guan
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Paper Abstract

We design an induction current acquisition device based on ARM in order to realize high resolution and high sampling rate of acquisition for the induction current in wire-loop. Considering its characteristics of fast attenuation and small signal amplitude, we use the method of multi-path fusion for noise suppression. In the paper, the design is carried out from three aspects of analog circuit and device selection, independent power supply structure and the electromagnetic interference suppression of high frequency. DMA and ping-pong buffer, as a new data transmission technology, solves real time storage problem of massive data. The performance parameters of ARM acquisition device are tested. The comparison test of ARM acquisition device and cRIO acquisition device is performed at different time constants. The results show that it has 120dB dynamic range, 47kHz bandwidth, 96kHz sampling rate, 5μV the smallest resolution, and its average error value is not more than 4%, which proves the high accuracy and stability of the device.

Paper Details

Date Published: 5 March 2018
PDF: 6 pages
Proc. SPIE 10710, Young Scientists Forum 2017, 1071019 (5 March 2018); doi: 10.1117/12.2316501
Show Author Affiliations
Yanju Ji, Jilin Univ. (China)
Xiyang Liu, Jilin Univ. (China)
Wanyu Huang, Jilin Univ. (China)
Jiang Yao, Jilin Univ. (China)
Guiyang Yuan, Jilin Univ. (China)
Luan Hui, Jilin Univ. (China)
Shanshan Guan, Jilin Univ. (China)

Published in SPIE Proceedings Vol. 10710:
Young Scientists Forum 2017
Songlin Zhuang; Junhao Chu; Jian-Wei Pan, Editor(s)

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