An electromagnetic ultrasonic monitoring sensor

By designing a flexible substrate and a Halbach magnet composite layer, combined with a magneto-optical fiber optic sensing network and a closed-loop control unit, high-precision detection of electromagnetic ultrasonic sensors in complex curved surfaces and high-temperature environments is achieved. This solves the adaptability and reliability problems of traditional electromagnetic ultrasonic transducers in curved surfaces and high-temperature environments, and provides intelligent detection and early warning functions.

CN224535907UActive Publication Date: 2026-07-21KUNMING JIAHE INTELLIGENT TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
KUNMING JIAHE INTELLIGENT TECH CO LTD
Filing Date
2025-07-24
Publication Date
2026-07-21

AI Technical Summary

Technical Problem

Traditional electromagnetic ultrasonic transducers suffer from large coupling gaps, acoustic impedance mismatch, and numerous detection blind zones in complex curved surface testing. Their magnetic properties degrade under high-temperature environments, and they lack environmental adaptability and self-regulation capabilities, making it impossible to achieve real-time status monitoring and fault early warning.

Method used

By employing a combination design of a flexible substrate, a three-dimensional flexible coil, a flexible Harbach magnet composite layer, a magneto-optical fiber optic sensing network, and a closed-loop control unit, the sensor achieves flexible adaptation, active cooling, intelligent adjustment, and health monitoring. Adaptive compensation is achieved through optimization of the magnetic field distribution of the Harbach array and multi-mode ultrasonic excitation, combined with real-time magnetic field monitoring of the magneto-optical fiber optic sensing network and FPGA control.

Benefits of technology

The sensor can achieve stable coupling on complex curved surfaces, maintain its performance in high-temperature environments, has high sensitivity and extensive defect detection capabilities, environmental adaptability and fault tolerance, and provides intelligent status assessment and early warning functions. It is suitable for high-temperature applications such as aerospace and nuclear industry.

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Abstract

The utility model discloses an electromagnetic ultrasonic monitoring sensor relates to nondestructive testing technical field, include: by the flexible substrate who makes polyimide film, set up three -dimensional flexible coil on the flexible substrate, by nanometer silver conductive ink is formed through aerosol jet printing technology, flexible halbach magnet composite layer is set up on three -dimensional flexible coil, by permanent magnet micron -sized powder is mixed and is made through magnetic field auxiliary forming, and the inside permanent magnet particle is oriented arrangement according to the magnetic field distribution direction of halbach array, the magneto -optical fiber sensing network embedded in the inside of flexible halbach magnet composite layer, is constituted by polarization maintaining fiber, and the two -dimensional magnetic field intensity distribution of halbach array is sensed in real time based on faraday effect, has excellent curved surface adaptability, high temperature stability and intelligent self -adaptation ability, can realize high -precision nondestructive testing under extreme environment.
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