5 March 2018 Development of induction current acquisition device based on ARM
Author Affiliations +
Proceedings Volume 10710, Young Scientists Forum 2017; 1071019 (2018) https://doi.org/10.1117/12.2316501
Event: Young Scientists Forum 2017, 2017, Shanghai, China
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.
© (2018) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Yanju Ji, Yanju Ji, Xiyang Liu, Xiyang Liu, Wanyu Huang, Wanyu Huang, Jiang Yao, Jiang Yao, Guiyang Yuan, Guiyang Yuan, Luan Hui, Luan Hui, Shanshan Guan, Shanshan Guan, } "Development of induction current acquisition device based on ARM", Proc. SPIE 10710, Young Scientists Forum 2017, 1071019 (5 March 2018); doi: 10.1117/12.2316501; https://doi.org/10.1117/12.2316501

Back to Top