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Updated: Feb 17, 2026

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Image Fiber-Based Miniature Suspended Solid Sensor with High Accuracy and a Large Dynamic Range.

Pengfei Qi1, Lie Lin1, Rui Huang2

  • 1Institute of Modern Optics, Nankai University, Key Laboratory of Optical Information Science and Technology, Ministry of Education, Tianjin, 300350, China.

Scientific Reports
|December 3, 2017
PubMed
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This summary is machine-generated.

A new miniature sensor uses image fibers and superhydrophobic coatings to measure suspended solids. This device visually determines mass concentration, morphology, and particle size in real-time with high accuracy and speed.

Area of Science:

  • Materials Science
  • Optical Engineering
  • Environmental Monitoring

Background:

  • Accurate measurement of suspended solids is crucial for environmental monitoring and industrial processes.
  • Existing methods for analyzing suspended solids can be intrusive or lack real-time capabilities.
  • Miniaturization of sensors is key to developing less invasive measurement techniques.

Purpose of the Study:

  • To demonstrate a novel image fiber-based miniature sensor for real-time analysis of suspended solids.
  • To develop a sensor capable of measuring mass concentration, morphology, and particle size.
  • To achieve ultralow-intrusion measurements for studying suspended solid dynamics.

Main Methods:

  • Coating an image fiber end with a superhydrophobic material to prevent solid and bubble adsorption.

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  • Utilizing digital image processing for visual measurement of suspended solid parameters.
  • Experimentally validating sensor performance for mass concentration, accuracy, and response time.

    • Main Results:

    • A sensor with a diameter of only a few millimeters was successfully demonstrated.
    • Real-time measurement of mass concentration, morphology, and particle size of suspended solids achieved.
    • Dynamic range of 0–100 kg/m³, accuracy of ±2‰, and response time of 0.05 s for mass concentration.
    • Particle size determination using digital image processing was also presented.

    Conclusions:

    • The developed image fiber-based sensor offers a significant advancement in ultralow-intrusion measurement techniques.
    • This technology enables real-time, multi-parameter analysis of suspended solids.
    • The sensor has broad applications in environmental studies and industrial process monitoring.