Revolutionary Drone Technology for Sewer Inspection
On March 28, 2025, Liberaware, based in Chiba, successfully conducted a promising experiment in collaboration with TKK Works from Osaka, supported by the city of Kobe. This groundbreaking experiment utilized small drones equipped with advanced distance measurement technology to inspect underground sewer pipelines where GPS signals are typically unreliable. The outcome of this experiment represents a significant step forward in gathering crucial information regarding the condition of sewer systems, demonstrating the potential for enhanced infrastructure management.
Background and Purpose
The impetus for this innovation arises from a serious road subsidence incident in Yashio City, Saitama Prefecture, in January 2025. This unfortunate occurrence highlighted the difficulties faced in inspecting underground sewage systems. Using their specially designed drone for tight spaces, the IBIS2, Liberaware was able to perform a detailed survey of the sewer pipes that had previously been deemed inaccessible for thorough investigation. Remarkably, during the inspection, a compartment-like structure was identified, later confirmed by specialists as significant evidence related to the accident.
Understanding the distance between the entry point of the drone and various objects within the sewer is vital for effective inspections. The recent experiment aimed to validate a new communication module and other measurement approaches applied to the IBIS2 drone to enhance its capabilities in distance measurement during sewer inspections.
Overview of the Experiment
- - Location: Tunnel in Kobe City, Hyogo Prefecture
- - Date: March 28, 2025
- - Participants: Liberaware, TKK Works, City of Kobe
- - Equipment Used: OM Digital Solutions products, including the OM SYSTEM OM-1 Mark II and M.ZUIKO DIGITAL ED 150-600mm F5.0-6.3 IS.
During the experiment, the IBIS2 drone flew while enabling distance measurement—an essential factor for successful inspection missions.
Future Directions
Building on the outcomes of this experimental phase, Liberaware plans to continue development with the IBIS drone to broaden its application in sewer inspections. The goal is for this advanced technology to become widely adopted in infrastructure inspections and disaster response scenarios. The company will persist in updating the IBIS system, collaborating with local governments and relevant organizations to ensure its effective implementation.
About Liberaware
Liberaware has established itself as a pioneering company dedicated to developing some of the world's smallest drones specifically designed for inspecting tight, dark, and hazardous indoor spaces. Their mission is to foster a safer society for everyone. The company utilizes the image data collected by these drones to offer infrastructure inspection and maintenance solutions. Their commitment to “visualizing hidden risks” embodies their vision of providing safety and peace to society.
- - Company Name: Liberaware Inc.
- - Representative: Min Hongkyu
- - Location: 3-3-1 Chuo, Chiba City, Chiba Prefecture
- - Established: August 22, 2016
- - Business Focus:
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Drone Services: Inspection, surveying, rental, and sale of drones like the IBIS.
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Digital Twin Services: Offering 3D data construction using advanced image processing techniques.
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Solution Development: Providing a wide range of solutions through customized software and hardware development based on the company’s expertise.