Worker fall prevention system in high-place work area and worker fall prevention method in high-place work area

The system enforces proper use of lanyard hooks with remote-controlled locking mechanisms to prevent falls at high-altitude work sites by ensuring consistent engagement with safety lines, addressing the challenges of worker awareness and supervision in complex environments.

WO2026049043A1 Publication Date: 2026-03-05SHIBAZAKI TSUTOMU
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Patent Information

Application Number
PCT/JP2025/030744
Authority / Receiving Office
WO · WO
Patent Type
Applications
Current Assignee / Owner
Priority Date
2024-09-02
Filing Date
2025-09-01
Publication Date
2026-03-05

AI Technical Summary

Technical Problem

Workers at high-altitude work sites frequently fall due to lack of awareness and improper use of fall prevention equipment, despite existing safety measures, and it is difficult for supervisors to monitor and enforce compliance across large, complex sites.

Method used

A system that restricts workers from manually opening or closing lanyard hooks without supervisor permission, using locking mechanisms controlled by command signals to ensure proper engagement with safety lines, and includes sensors to detect engagement and material properties.

Benefits of technology

Prevents falls by ensuring consistent and correct use of fall prevention equipment, even in remote or hard-to-observe locations, through remote supervision and automated enforcement of safety protocols.

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Abstract

The present invention provides a worker fall prevention system and method capable of reliably preventing a fall accident of a worker working in a high-place work area. This worker fall prevention system in a high-place work area is configured such that a worker wearing a lanyard performs work while moving as appropriate between a safety area and one or more work areas. The worker fall prevention system is configured such that the worker working in the high-place work area is restricted from operating a hook of the lanyard on their own will, and the worker cannot arbitrarily operate the hook unless given permission by a supervisor on site.
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