Resonant Sensor Assembly with Tuning Elements for Fluid Analysis
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Solution Overview
Problem
Current resonant sensors lack selectivity and sensitivity, particularly in impedance spectroscopy, which limits their application in medical diagnostics, life sciences, water technologies, and security due to low sensitivity and long acquisition times over broad frequency ranges.
Innovation Solution
A resonant sensor assembly with a dielectric substrate and multiple tuning elements forms a plurality of resonant circuits, allowing a single sensing region to probe fluids at various frequencies, providing tomographic information and enabling detection of physical, chemical, and biological constituents with improved sensitivity and selectivity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional impedance spectroscopy is used to analyze biological species, then a non-invasive and non-toxic platform is provided, but sensitivity is relatively low and acquisition times are prohibitively long
Solution Approach 1:
The patent employs resonant sensors that utilize mechanical vibration at specific resonant frequencies to detect changes in the sample. By exciting the sensor at its resonant frequency and measuring frequency shifts or quality factor changes, the system achieves high sensitivity detection of biological species without invasive contact, resolving the contradiction between non-invasive operation and measurement precision
Solution Approach 2:
The patent changes the operating parameter from broad frequency scanning to specific resonant frequency measurement. By tuning the sensor to operate at its resonant frequency and detecting small shifts in this parameter caused by sample interactions, the system achieves both non-invasive operation and high sensitivity simultaneously
2Reliability
If traditional impedance spectroscopy is used to analyze biological species, then a non-invasive and non-toxic platform is provided, but acquisition times are prohibitively long
Solution Approach 1:
The resonant sensor system uses mechanical vibration at a single resonant frequency rather than sweeping through a broad frequency range. This allows rapid acquisition of sensor response at the resonant frequency, dramatically reducing measurement time while maintaining non-invasive operation
Solution Approach 2:
The system employs periodic excitation at the resonant frequency to generate a strong, stable signal response. By using periodic action rather than continuous frequency scanning, the system achieves rapid data acquisition with reduced measurement time while preserving the non-invasive nature of the analysis
3Measurement precision
If resonant sensors are used to probe dielectric properties of samples, then accuracy is improved in the presence of ambient environmental noise, but device complexity increases with multiple tuning elements
Solution Approach 1:
The patent integrates multiple tuning elements into a single resonant sensor device that can operate at multiple resonant frequencies. This multi-functional design allows the same sensor structure to detect different dielectric properties and filter different frequency components, improving measurement accuracy without requiring multiple separate sensors
Solution Approach 2:
The patent combines multiple tuning elements and resonant circuits into a single integrated sensor assembly. By merging these components into one device rather than using separate sensors, the system achieves improved detection accuracy through multi-frequency operation while minimizing the increase in device complexity through integration
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 solution enables efficient detection of biological and chemical parameters in fluids, reducing the need for multiple sensors and allowing real-time monitoring, enhancing sensitivity and selectivity, and facilitating applications in medical diagnostics, life sciences, and security.
Implementation Method 1
the sensing region is coupled to the plurality of tuning elements to define a plurality of resonant circuits
Data Source
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AI summary
A resonant sensor assembly includes a dielectric substrate having a sensing region. The sensor assembly further comprises a plurality of tuning elements operatively coupled to the sensing region, where the sensing region is coupled to the plurality of tuning elements to define a plurality of resonant circuits.