Design on Measuring System of New Type Electrical Resistivity Imaging Exploring Ground Instrument

Yang Jiao; Jun Wang; Gang He

doi:10.4028/www.scientific.net/KEM.620.369

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HomeKey Engineering MaterialsKey Engineering Materials Vol. 620Design on Measuring System of New Type Electrical...

Design on Measuring System of New Type Electrical Resistivity Imaging Exploring Ground Instrument

Abstract:

Aiming at the deficiencies of single signal of electrical resistivity imaging instrument, poor anti-interference, fixed electrode arrangement and low-sampling accuracy, etc, this paper designs a new type of high-density exploring ground instrument. Based on MCU as controller, the transmitter uses MOSFET tube driving H bridge circuit to transmit any digital code current signal. Based on FPGA as master controller, the receiver uses 24 bit ADC chip to sample the data, designs the key circuit such as reference source, clock and single-ended to differential, accomplishes high precision data acquisition. Distributed intelligent electrode conversion device uses low power relay, so it is very small and low power consumption. We did the noise test and repeated measurement experiments on pure resistance on this instrument. The experimental results show that the transmitting signal is stable, waveform is standard, resistance curve tested by collecting system and actual curve are coherent, the precision is high and the stabilization is good.

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Periodical:

Key Engineering Materials (Volume 620)

Pages:

369-374

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.620.369

Citation:

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Online since:

August 2014

Authors:

Yang Jiao*, Jun Wang, Gang He

Keywords:

Data Collecting, Digit-Coded Signal, Electrical Resistivity Imaging, Exploring Ground Instrument, Intelligent Electrode

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* - Corresponding Author

References

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