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Using a Cyclic Ion Mobility Spectrometer for Tandem Ion Mobility Experiments
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Published on: January 20, 2022

Optically isolated High-Speed data acquisition system for ion mobility spectrometry.

Jannik Wuttke1, Tim Kobelt1, Jonas Winkelholz1

  • 1Leibniz University Hannover, Institute of Electrical Engineering and Measurement Technology, Department of Sensors and Measurement Technology, Appelstr. 9A, 30167 Hannover, Germany.

Hardwarex
|June 4, 2026
PubMed
Summary
This summary is machine-generated.

A new open-source data acquisition system provides optically isolated, high-speed signal transmission for sensor applications. This system achieves high signal-to-noise ratio (SNR) and adjustable sampling rates, simplifying complex instrumental setups.

Keywords:
Data acquisitionHigh-speedIMSIon mobility spectrometryJESD204 interfaceOptical isolation

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Area of Science:

  • Electrical Engineering
  • Instrumentation and Measurement
  • Signal Processing

Background:

  • Sensor data transmission from high to ground potential is crucial for applications like ion mobility spectrometers (IMS).
  • Existing systems face challenges in achieving high sampling rates and resolutions with electrical isolation.
  • Simplified instrumental setups require isolated signal transmission from high-voltage detectors to ground-potential data acquisition systems.

Purpose of the Study:

  • To present a novel, open-source, high-speed data acquisition system for optically isolated signal transmission.
  • To enable high sampling rates and resolutions in sensor data acquisition systems operating at high electrical potentials.
  • To enhance the signal-to-noise ratio (SNR) for improved data quality.

Main Methods:

  • Utilized an analog-to-digital converter (ADC) with a serial high-speed interface to minimize communication lines.
  • Employed low-cost optical network transceivers for electrical isolation.
  • Integrated a system on a chip (SoC) module for digital low-pass filtering and sample rate reduction to boost SNR.
  • Implemented Ethernet with TCP/IP for data retrieval, visualization, and storage.
  • Included trigger pulse input and configurable pulse output channels for system compatibility.

Main Results:

  • Achieved optically isolated data acquisition with an adjustable sampling rate up to 12.5 MS/s.
  • Attained a signal-to-noise ratio (SNR) of up to 87.5 dB.
  • Minimized communication lines using serial ADC and two optical transceivers.
  • Demonstrated compatibility with further control electronics via trigger and pulse channels.

Conclusions:

  • The developed open-source system effectively addresses the need for high-speed, optically isolated data acquisition in high-voltage sensor applications.
  • The system's design simplifies complex instrumental setups, such as ion mobility spectrometers.
  • The high SNR and adjustable sampling rate provide a robust solution for demanding measurement requirements.