the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Software development of an internet-of-things based controlled-source ultra-audio frequency electromagnetic receiver
Abstract. This study addresses the limitations of traditional CSAMT (Controlled-Source Audio-frequency Magnetotellurics) in insufficient shallow-to-medium layer exploration accuracy, complex human-machine interaction, and constrained data transmission in existing electromagnetic instruments. A novel IoT(Internet-of-Things)-integrated CSUMT-R (Controlled-Source Ultra-audio Frequency Electromagnetic Receiver) system is developed. The hardware employs a Zynq multi-core processor architecture, integrating a five-channel ultra-wide band (1 Hz–1 MHz) acquisition system. The software system features a dual-layer architecture combining embedded control and remote monitoring, incorporating dynamic buffer DMA (Direct Memory Access) drivers, distributed hybrid networking technology, IoT technology, and five-channel batch processing algorithms to support high-speed real-time data transmission (up to 320 Mbps) and remote visualization. Field tests in the Fengtai ore cluster area, Shaanxi Province, China, demonstrate stable functionality and high intelligence, meeting demands for complex field exploration.
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Status: open (until 12 Sep 2025)
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RC1: 'Comment on egusphere-2025-2970', Anonymous Referee #1, 01 Aug 2025
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This manuscript presents an innovative IoT-integrated CSUMT-R system addressing critical limitations in traditional CSAMT instruments (e.g., shallow-layer resolution, data transmission, and user interactivity).The work demonstrates rigorous design and novelty and is recommended for acceptance after minor revisions addressing the following points:Instrument tests (Section 7):Formula (4) for mean square relative error uses an undefined symbol A ̅;Include the formula for self-consistency checks of CSUMT-R apparent resistivity data.Ultra-wide band data transmission (Section 5):The dynamic buffer DMA driver is a key innovation but lacks dedicated illustration. Replace Fig. 8 with a diagram explicitly detailing this mechanism.Conclusions (Section 8):Add an opening paragraph summarizing the core innovations.Terminology consistency:Unify the term for the monitoring software to "upper-computer" throughout (e.g., Section 6 uses "host").Recommendation: Accept (Minor Revisions)Citation: https://doi.org/
10.5194/egusphere-2025-2970-RC1 -
AC1: 'Reply on RC1', Xiyuan Zhang, 04 Aug 2025
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The comment was uploaded in the form of a supplement: https://egusphere.copernicus.org/preprints/2025/egusphere-2025-2970/egusphere-2025-2970-AC1-supplement.pdf
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AC1: 'Reply on RC1', Xiyuan Zhang, 04 Aug 2025
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CC1: 'Comment on egusphere-2025-2970', Lihua Liu, 03 Aug 2025
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This study presents a well-designed IoT-based CSUMT-R software system with significant technical merits. To strengthen reproducibility and clarity of the core software contributions, the following revisions are required prior to acceptance:
- Specify DMA buffer algorithm parameters:
Section 5 mentions buffer adjustment triggered when "STA/LTA deviates from the threshold range." To enable replication of the driver’s optimization logic, explicitly define the STA/LTA thresholds (e.g., specific ratio bounds or values) and the sampling window sizes used for dynamic buffer adjustment.
- Increase instrument tests confidence:
Add a screenshot of the waveform display interface in the instrument testing section (Section 7).
- Improve the visual interface of the upper-computer
Section 6 introduces the design of an SFTP-based file transfer function in the upper-computer software. To substantiate the implementation and user interaction, provide a screenshot of the software's SFTP transfer interface in action or a test result screenshot confirming successful transfer.
- Clarify system architecture diagram
Figure. 7 attempts to illustrate both command transmission and data transmission flows. Currently, these distinct processes are visually intertwined, making the diagram difficult to interpret. Please clearly differentiate the command flow from the data flow within this figure.
- Correct software description terminology
Revise the phrase "cloud- and IoT-based" to "cloud and IoT-based" (Section 8) to maintain grammatical precision in describing the software architecture.
These edits will significantly enhance the transparency, reproducibility, and visual clarity of the presented software methodology. I recommend acceptance of the manuscript pending satisfactory incorporation of the above revisions.
Citation: https://doi.org/10.5194/egusphere-2025-2970-CC1 -
AC2: 'Reply on CC1', Xiyuan Zhang, 07 Aug 2025
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The comment was uploaded in the form of a supplement: https://egusphere.copernicus.org/preprints/2025/egusphere-2025-2970/egusphere-2025-2970-AC2-supplement.pdf
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