地球物理学进展 ›› 2020, Vol. 35 ›› Issue (1): 287-293.doi: 10.6038/pg2020CC0547

• 应用地球物理学Ⅱ(海洋、工程、环境、仪器等) • 上一篇    下一篇

基于STM32和LabVIEW的双频激电信号采集系统设计

付国红1,2, 张前丰1, 程辉1,2,3   

  1. 1.湖南科技大学先进矿山装备教育部工程研究中心, 湘潭411201;
    2.桂林理工大学广西隐伏金属矿产勘查重点实验室, 桂林541004;
    3.中国科学院地质与地球物理研究所, 北京100029
  • 收稿日期:2019-04-13 修回日期:2019-09-29 出版日期:2020-02-20 发布日期:2020-03-18
  • 作者简介:付国红,男,博士,副教授,研究方向为地球物理仪器. E-mail: fghcsu@163.com
  • 基金资助:
    国家重点研发计划项目(2018YFC0603900)、广西隐伏金属矿产勘查重点实验室(1514027K01)、湖南省自然科学基金(2016JJ5023)、湖南省教育厅项目(16K031)和湖南省研究生科研创新项目(CX2018B663)联合资助.

Design of dual⁃frequency IP signal acquisition system based on STM32 and LabVIEW

FU Guo-hong1,2, ZHANG Qian-feng1, CHENG Hui1,2,3   

  1. 1. Engineering Research Center of Advanced Mining Equipment, Ministry of Education, Hunan University of Science and Technology, Xiangtan 411201, China;
    2. Key Laboratory of Mine Deposits Research,Guilin University of Technology, Guilin 541004, China;
    3. Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100029, China
  • Received:2019-04-13 Revised:2019-09-29 Online:2020-02-20 Published:2020-03-18

摘要: 本文将LabVIEW与基于32位ARM单片机的数据采集电路结合,研究实现了一种高精度、多功能的双频激电信号采集系统.激电信号被采集系统接收后,经信号调理进入模数转换电路转换为数字信号,由USB接口送入基于LabVIEW软件平台的上位机中.上位机对该信号进行滤波选频、幅值测量、频谱分析、幅频率计算等处理,得到目标参数,同时还具有绘图、保存、查看等功能.本文就双频激电信号采集进行了阻容网络模拟实验,先用公式计算出理论视幅频率值,然后搭建电路进行实测.实验结果表明,该采集系统对双频激电信号采集的视幅频率测量误差小、精度高,具有良好的测量效果.

关键词: LabVIEW, ARM, 双频激电法, 幅频率

Abstract: This article combines LabVIEW with data acquisition circuit based on 32-bit ARM microcontroller to develop a high-precision and multi-function dual-frequency induced polarization signal acquisition system. After being received and conditioned by acquisition system, the IP signal is converted into a digital signal by analog-to-digital conversion circuit, then the data is sent to the upper computer based on the LabVIEW platform by the USB interface. The upper computer performs filtering, frequency selection, amplitude measuring, spectrum analysis, percent frequency effect calculation and other processing on the signal to obtain target parameters, and also has functions of waveform display, data saving and viewing. This article took dual-frequency IP signal acquisition as an example, conducted RC network simulation experiment. First used the formula to calculate the theoretical percent frequency effect, then built the circuit for actual measurement. Experimental results showed that the system has small error and high precision for the percent frequency effect measurement of the dual-frequency IP signal acquisition, the measurement effect is satisfactory.

Key words: LabVIEW, ARM, Dual-frequency IP method, Percent frequency effect

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