Forward Sensing Probe Pre-tuning for NQR Material Detection
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Solution Overview
Problem
Existing NQR systems require tuning for each measurement and material, which is time-consuming and inadequate for fast response applications, such as inspecting moving targets, due to inefficient autotuning methods.
Innovation Solution
The implementation of a forward resonance probe technology that separates the tuning process from the measurement process, using a forward sensing probe to detect and pre-tune the main probe before the target enters its field of view, allowing for rapid adjustment and improved detection efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If traditional autotuning methods are used for each measurement, then the system can be tuned to the correct frequency, but the tuning process is too slow for moving targets
Solution Approach 1:
The patent performs preliminary tuning actions by detecting the target with the FSP upstream from the MP, determining the detuning amount, and pre-tuning the MP before the target enters its field of view. This preliminary action enables the system to be pre-positioned at the correct frequency, eliminating the need for slow autotuning during the actual measurement window and enabling tracking of moving targets.
2Measurement precision
If the system tunes for each different material, then measurement accuracy is improved, but measurement time is reduced
Solution Approach 1:
The system performs preliminary detection and detuning determination with the FSP before the target reaches the MP. This preliminary action allows the MP to be pre-tuned to the specific frequency required for the detected material, eliminating time loss during the actual measurement phase while maintaining accurate material identification.
Solution Approach 2:
The patent segments the measurement process into distinct phases: preliminary detection phase using FSP upstream, and measurement phase using MP downstream. This segmentation allows the FSP to perform material detection and frequency determination without interfering with the actual measurement time of the MP, enabling both precision and speed.
3Device complexity
If the tuning process is combined with measurement, then system complexity is reduced, but detection probability decreases
Solution Approach 1:
The patent divides the system into two functional segments: FSP (forward sensing probe) for preliminary detection and detuning determination, and MP (main probe) for measurement. This segmentation allows tuning and measurement to be separated in space and time, improving detection probability by ensuring the MP is pre-tuned and ready, while maintaining manageable system complexity through modular design.
Solution Approach 2:
The FSP acts as an intermediary between the target and the MP. It performs preliminary detection, determines detuning, and enables pre-tuning of the MP without the MP being directly exposed to the target during this phase. This intermediary role improves detection probability by ensuring optimal tuning conditions while keeping the system structure organized.
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
This approach enables faster and more accurate material identification by utilizing the full measurement time within the target's field of view, reducing false alarms and enhancing detection probabilities.
Implementation Method 1
measuring an impedance including a reactance of the object and the pre-tuning of the main probe is based on the measured impedance
Data Source
AI summary
Systems and methods for pre-tuning a main Nuclear Quadrupole Resonance (NQR) probe using a forward sensing probe include a determination of an amount of resonance detuning of the forward sensing probe caused by a moving object entering a field of view of the forward sensing probe. The amount of resonance detuning is used to pre-tune the main probe such that when the moving object enters a field of view of the main probe, the main probe will move back into tune while delivering optimal power to the object for measurement and identification of a material therein.