Assembly for measuring magnetic signals

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This patent describes an improved assembly for measuring magnetic signals using a magnetometer. The innovation involves surrounding the sensor of the magnetometer with the coil of a resonant oscillating circuit (LC circuit), which is tuned such that its resonance frequency matches the frequency of interest. This configuration significantly improves the sensor's sensitivity at a chosen frequency by enhancing the signal-to-noise ratio (SNR), especially in applications requiring high sensitivity in a narrow frequency band.

Use CasesContent extracted from patent full text and abstract with AI.

• Detection of weak magnetic fields in scientific research, such as physics experiments or geophysical surveys.
• Nuclear Magnetic Resonance (NMR) in low magnetic fields for medical diagnostics or chemical analysis.
• Eddy current testing for non-destructive material inspection in engineering and manufacturing.
• Modulated magnetic field measurements requiring high sensitivity in a specific frequency range.
• Improvements to superconducting quantum interference devices (SQUIDs) used in biomagnetic measurements (e.g., magnetoencephalography).
• Enhancement of magnetic sensing technologies using Hall probes or giant magnetoresistance (GMR) sensors.

BenefitsContent extracted from patent full text and abstract with AI.

• Significantly increases the signal-to-noise ratio, allowing the detection of much weaker magnetic fields.
• Enhances measurement sensitivity at a selected resonance frequency, making the device highly selective and efficient for targeted applications.
• Compatible with different types of magnetometers, including SQUIDs, Hall sensors, and GMR sensor arrays.
• The assembly can be adapted for cooling (e.g., with liquid nitrogen), enabling use with high-temperature superconducting devices.
• The improvement is achieved without fundamentally changing the magnetometer's basic operation, making it suitable as a retrofit or modular upgrade.

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Inventors & Applicants

Patent Abstract

The measuring device measures magnetic signals by means of a magnetometer. It includes a sensor to measure the signal, which is enclosed in the coil of at least one oscillating circuit, which may be inductively coupled to the sensor. The resonance frequency of the oscillating circuit may coincide with the frequency to be measured.