Acquisition platform of frequency domain IP signal

Authors

FU Guohong, Engineering Research Center of Advanced Mining Equipment, Ministry of Education, Hunan University of Science and Technology, Xiangtan 411201, China; Key Laboratory of Mine Deposits Research, Guilin University of Technology, Guilin 541004, China
ZHANG Qianfeng, Key Laboratory of Mine Deposits Research, Guilin University of Technology, Guilin 541004, China
CHENG Hui, Engineering Research Center of Advanced Mining Equipment, Ministry of Education, Hunan University of Science and Technology, Xiangtan 411201, China; Key Laboratory of Mine Deposits Research, Guilin University of Technology, Guilin 541004, China; Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100029, China
XIE Tiancai, Engineering Research Center of Advanced Mining Equipment, Ministry of Education, Hunan University of Science and Technology, Xiangtan 411201, China

Abstract

In order to improve the versatility of the induced polarization(IP) signal receiver of traditional frequency domain, a signal acquisition platform was designed, which can acquire and process IP signals of frequency domain such as variable-frequency signals, dual-frequency IP signals, and pseudo-random multi-frequency IP signals and so on. Hardware circuits were established based on STM32 to execute low-pass filtering, program-controlled amplification, analog-to-digital conversion, and data communication. The host computer was developed in LabVIEW to achieve parameter settings, digital filtering, spectrum analysis, amplitude measurement and calculation to obtain target parameters such as PFE, and has waveform display and playback, data storage and viewing functions. The experiment of the RC network model was carried out, three methods were used to measure the percent frequency effect(PFE), the absolute error of the PFE was less than 0.5%. Results showed that the platform has high measurement accuracy, and can flexibly select different methods for acquisition and processing. It has good application prospect in resource exploration and coal mine water hazard detection.

Keywords

frequency domain IP, LabVIEW, RC network, PFE, signal acqusition platform

DOI

10.3969/j.issn.1001-1986.2019.05.028

Recommended Citation

FU Guohong, ZHANG Qianfeng, CHENG Hui, et al. (2019) "Acquisition platform of frequency domain IP signal," Coal Geology & Exploration: Vol. 47: Iss. 5, Article 29.
DOI: 10.3969/j.issn.1001-1986.2019.05.028
Available at: https://cge.researchcommons.org/journal/vol47/iss5/29

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