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A Comprehensive Review of Micro-Inertial Measurement Unit Based Intelligent PIG Multi-Sensor Fusion Technologies for

Lianwu Guan1, Xiaodan Cong2, Qing Zhang1

  • 1College of Intelligent Systems Science and Engineering, Harbin Engineering University, Harbin 150001, China.

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Summary

This review explores Micro-Inertial Measurement Unit (MIMU)-based intelligent Pipeline Inspection Gauge (PIG) technologies for surveying small-diameter pipelines. It details multi-sensor fusion for enhanced leak detection and defect localization, crucial for pipeline safety and management.

Keywords:
intelligent Pipeline Inspection Gauge surveying technologymulti-sensor fused systempipeline inspection gaugepipeline integrity managementsmall-diameter pipeline

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Area of Science:

  • Pipeline Engineering
  • Sensor Fusion Technology
  • Robotics and Automation

Background:

  • Pipeline systems are critical for transporting liquids and gases, but are vulnerable to leaks from corrosion, damage, and natural disasters.
  • Pipeline failures, especially in urban areas, result in significant economic losses, environmental damage, and safety risks.
  • Effective pipeline surveying is essential for integrated pipeline management (PIM) and preventing catastrophic failures.

Purpose of the Study:

  • To provide a comprehensive review of Micro-Inertial Measurement Unit (MIMU)-based intelligent Pipeline Inspection Gauge (PIG) multi-sensor fusion technologies.
  • To analyze surveying technologies for small-diameter pipelines (D < 30 cm).
  • To investigate defect inspection and localization principles for various pipeline defects.

Main Methods:

  • Investigation of four types of small-diameter intelligent PIGs and their defect inspection/positioning technologies.
  • Classification of multi-sensor fused pipeline surveying technologies into non-inertial-based and MIMU-based categories.
  • Detailed survey and analysis of five schematic diagrams of MIMU-fused intelligent PIG fusion technology.

Main Results:

  • Detailed analysis of existing small-diameter intelligent PIGs and their sensing capabilities.
  • Categorization and comparison of different multi-sensor fusion approaches for pipeline surveying.
  • Identification of key MIMU-based fusion strategies and their schematic representations.

Conclusions:

  • MIMU-based intelligent PIGs offer promising multi-sensor fusion solutions for efficient and accurate surveying of small-diameter pipelines.
  • Further research is needed to address challenges in developing and implementing advanced intelligent PIG surveying techniques.
  • This review provides a foundation for future advancements in pipeline integrity management and safety.