High-voltage line suspension clamp stress monitoring and early warning system

By installing RFID sensor tags and force-sensitive overload memory units with magnetostrictive alloy microwires on suspension clamps, the problem of indelible recording of overload events of suspension clamps is solved, realizing low-power, high-reliability overload monitoring and early warning, and improving the efficiency and safety of line operation and maintenance.

CN122282152AActive Publication Date: 2026-06-26SHANGHAI YONGGU ELECTRIC MATERIAL CO LTD
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Patent Information

Application Number
CN202610774007.1
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-06-01
Publication Date
2026-06-26
Estimated Expiration
2046-06-01

AI Technical Summary

Technical Problem

Existing technologies lack a method that can permanently record overload events of suspension clamps in an indelible manner without relying on external power sources and real-time communication networks. This makes it impossible to effectively monitor and warn of overload conditions of clamps, resulting in long inspection cycles and hidden safety hazards.

Method used

The RFID sensing tag includes a force-sensitive overload memory unit and a magnetostrictive alloy microwire. It utilizes the irreversible martensitic variant preferred orientation of the magnetostrictive alloy microwire under overload, which leads to a step-like permanent decrease in magnetic permeability. Combined with an RFID reader, it achieves passive and indelible recording of overload events.

Benefits of technology

It achieves passive permanent memory, tamper-proof, and low-power overload event recording, enabling convenient reading of historical information and current stress during inspections, improving the information density of maintenance decisions, reducing clamp failure rate, and minimizing unplanned power outage time.

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Abstract

The invention relates to a high-voltage line suspension clamp stress monitoring and early warning system, and belongs to the field of high-voltage line intelligent monitoring. The system is composed of an RFID sensing tag installed on a suspension clamp and an inspection RFID reader. The RFID sensing tag is integrated with a force-sensitive overload memory unit, a tag chip and an antenna, magnetostrictive alloy microwires in the unit are serially connected to a force transmission path, irreversible martensite phase transformation occurs when the tension exceeds a threshold value, and the magnetic conductivity step is permanently reduced. And the tag chip detects the change through the magnetic sensing circuit, and locks and rewrites the non-volatile storage area overload flag bit hardware. The reader reads the flag bit in a non-contact mode, and the overload history is judged; and the real-time tension is measured and calculated through the antenna resonance frequency offset. The reader can carry an unmanned aerial vehicle or a handheld terminal, automatically record overload information and generate a work order, and the background server integrates data to achieve life prediction and batch replacement planning. The system is passive and free of maintenance, records cannot be tampered, overload memory and stress detection are both considered, and the line operation and maintenance safety and the intelligent level are improved.
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