Quantum Magnetic Sensor for Tiny Foreign Object Detection
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Solution Overview
Problem
Existing sensor technologies struggle to detect very small magnetic foreign objects in containers filled with filling materials, as these objects cause only slight changes in the magnetic field that are often lost in signal noise.
Innovation Solution
A sensor device using a magnetic quantum sensor, such as a crystal body with defects like NV centers, is employed to detect foreign objects by creating a magnetic circuit with a magnetic field source, flux conductor, and opening, allowing for contactless detection and real-time monitoring through a control and evaluation unit that processes signals using learning processes and noise suppression techniques.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional magnetic detection methods are used, then the detection system is simple and easy to operate, but very small foreign objects cause only very slight changes to the magnetic field which are lost in signal noise and cannot be detected
Solution Approach 1:
The patent changes the detection parameter from conventional magnetic field measurement to quantum-based magnetic field measurement. By using a quantum sensor that exploits quantum mechanical effects (such as quantum tunneling or quantum interference), the system achieves significantly higher sensitivity in detecting minute magnetic field changes caused by small foreign objects, while maintaining a relatively simple overall device structure.
Solution Approach 2:
The patent replaces conventional mechanical or classical electromagnetic detection mechanisms with a quantum-based detection mechanism. This substitution enables the system to detect extremely weak magnetic signals that would be undetectable by classical methods, thereby resolving the contradiction between detection sensitivity and system complexity.
2Ease of operation
If contactless detection is implemented, then the safety and ease of operation are improved, but the detection sensitivity may be reduced compared to direct contact methods
Solution Approach 1:
The patent maintains high detection sensitivity in contactless operation by changing the detection parameter to quantum-level measurements. The quantum sensor can detect extremely weak magnetic field changes through the container wall without direct contact, achieving both contactless operation and high detection sensitivity simultaneously.
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 device achieves high sensitivity in detecting small magnetic foreign objects, enabling real-time monitoring of multiple containers with reduced noise interference, surpassing conventional methods and ensuring safety by avoiding potential harm from other detection methods.
Implementation Method 1
a magnetic quantum sensor that is arranged in a first position in the magnetic flux generated by the magnetic flux conductor
Implementation Method 2
a magnetic field source, a magnetic flux conductor
Data Source
AI summary
A sensor device (10) for detecting foreign objects (8) in a container (2) filled with a filling material (1), comprises: a magnetic field source (3), at least one magnetic flux conductor (5), a magnetic quantum sensor (4) that is arranged in a first position in the magnetic flux generated by the magnetic flux conductor (5), an opening (11), which is arranged in a second position in the magnetic flux conducted by the at least one magnetic flux conductor (5) and through which the container (2) can be moved, and a control and evaluation unit (6) for controlling the magnetic field source and for evaluating the signals emitted by the magnetic quantum sensor (4).