Eddy Current Flaw Detection with NV Quantum Sensing
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Solution Overview
Problem
There is a lack of integration of NV color center precision measurement technology with eddy current nondestructive flaw detection technology in existing systems, limiting the accuracy and effectiveness of flaw detection.
Innovation Solution
An eddy current flaw detection system utilizing a NV color center quantum sensing technology, comprising a laser transceiver processing unit, quantum sensor, excitation coil, power supply unit, and microwave unit, to generate and analyze feedback fluorescence for precise flaw detection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional eddy current testing technology is used, then the detection process is simple and equipment is mature, but the measurement precision and detection accuracy are insufficient for fine crack defects
Solution Approach 1:
The patent combines NV color center quantum sensing technology with traditional eddy current testing to create a hybrid detection system. The quantum sensor integrates optical detection capabilities with magnetic field sensing, merging precision measurement technology with conventional nondestructive testing to achieve higher detection accuracy while maintaining system manageability
Solution Approach 2:
The patent replaces traditional electrical signal detection in eddy current testing with quantum optical detection. Instead of relying solely on electrical impedance changes, the system uses NV color centers to detect magnetic field variations through optical fluorescence, substituting electrical measurement with quantum optical measurement for enhanced precision
2Measurement precision
If NV color center quantum sensing technology is integrated with eddy current testing, then the detection precision is improved, but the device complexity increases
Solution Approach 1:
The quantum sensor serves multiple functions simultaneously: it acts as both the eddy current detector and the precision magnetic field sensor. The NV color center in diamond provides both the coupling interface for eddy current excitation and the quantum sensing mechanism, reducing the need for separate detection systems and simplifying the overall architecture despite the advanced technology employed
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The system enhances the accuracy of eddy current flaw detection by combining NV color center precision measurement, enabling precise detection of fine crack defects and providing rapid and accurate flaw detection methods.
Implementation Method 1
As diamond NV color center shows strong fluorescence under the laser pumping
Implementation Method 2
under the laser pumping
Implementation Method 3
the diamond NV color center can be used as a nano-sized sensor for high-precision measurement of magnetic fields
Implementation Method 4
eddy current testing is one of the most important testing technologies, which is based on the theory of electromagnetic induction
Implementation Method 5
When a conductor is placed in an alternating magnetic field, an induced current will be formed around the conductor, which causes eddy current
Data Source
AI summary
Disclosed is an eddy current flaw detection system based on a NV (nitrogen-vacancy) color center quantum sensing technology, relating to the technical field of quantum sensing. The system includes a laser transceiver processing unit, a quantum sensor, an excitation coil, a power supply unit, a microwave coil, and a microwave unit. The diamond NV color center precision measurement technology and the eddy current nondestructive flaw detection technology are combined in accordance with the present disclosure. Compared with the traditional technology, the remarkable performance of the diamond NV color center can improve the accuracy of eddy current nondestructive flaw detection and achieve the accurate detection of fine crack defects. Meanwhile, a detection method for an alternating current magnetic field is designed according to the characteristics of the eddy current nondestructive flaw detection.