Batteryless UHF Gas Sensor Using MIP Dipole Antenna
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Solution Overview
Problem
Current methods for determining the safety of perishable products and medical diagnostics rely on inaccurate sell-by dates and require invasive sampling, while there is a need for a system to detect molecular structures in air samples wirelessly and remotely.
Innovation Solution
A wireless, battery-less sensor system using a dipole antenna coupled with a molecular imprinted conductive or non-conductive polymer sensing element that captures and measures molecular structures in the atmosphere, transmitting data for analysis via RF communication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If sell-by dates are used to determine product safety, then merchants can simplify inventory management, but the accuracy of determining when products are no longer safe deteriorates
Solution Approach 1:
The patent replaces the mechanical/manual system of date stamping and visual inspection with a wireless sensor system that automatically detects molecular structures in air samples. The sensor contains a molecularly imprinted polymer (MIP) that selectively binds to spoilage indicator molecules, and a dipole antenna that wirelessly transmits detection data, eliminating the need for manual date tracking while providing accurate real-time safety assessment.
Solution Approach 2:
The patent introduces molecularly imprinted polymers (MIP) as intermediaries that selectively capture and concentrate spoilage indicator molecules from air samples. The MIP acts as a mediator between the complex air sample matrix and the detection system, enabling specific detection of target molecules while filtering out interfering substances, thus improving measurement precision.
2Measurement precision
If blood samples are drawn for medical diagnostics, then accurate medical diagnosis can be achieved, but patient comfort and convenience deteriorate
Solution Approach 1:
The patent replaces the invasive mechanical process of blood drawing with a non-invasive wireless air sampling system. The sensor detects molecular structures in breath or ambient air that serve as biomarkers for medical conditions, eliminating needle insertion and blood collection while maintaining diagnostic capability through alternative biomarker detection.
Solution Approach 2:
The patent uses breath or ambient air as an intermediary medium to access biological information without direct blood contact. The molecularly imprinted polymer selectively captures disease-related molecules from the air sample, serving as a bridge between the external environment and internal physiological state, enabling diagnosis without invasive sampling.
3Loss of information
If wireless sensing is implemented for remote monitoring, then real-time data transmission is achieved, but system complexity increases
Solution Approach 1:
The patent designs a multi-functional sensor system where a single device integrates molecular recognition (MIP), signal generation (dipole antenna), and wireless communication capabilities. The dipole antenna serves multiple functions: it acts as the sensing element that interacts with molecular structures and simultaneously functions as the wireless transmitter, eliminating the need for separate power sources, microcontrollers, and communication modules, thus reducing overall system complexity.
Solution Approach 2:
The patent merges the sensing function and wireless communication function into a single integrated component. The dipole antenna is designed to both detect molecular structures through its electromagnetic interaction and transmit the detection signal wirelessly, combining what would traditionally be separate subsystems into one unified device, thereby simplifying the overall system architecture.
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
Enables accurate detection of spoilage in perishable products and medical diagnostics without invasive sampling, providing real-time monitoring and analysis of molecular structures, improving food safety and medical diagnostics.
Implementation Method 1
a dipole antenna that is electrically coupled with a sensing element... During a sensing operation, the dipole antenna can be energized based on a RF signal received from the RF wireless antenna
Implementation Method 2
The sensing element can include either a molecular imprinted conductive (MIP) element... When the sensor is in the area, in an example, the MNP captures molecular structures that are in the atmosphere
Implementation Method 3
a radio frequency (RF) wireless antenna that can communicate with the dipole antenna of the sensor
Data Source
AI summary
A system for providing an indication of the presence of molecular structures in a medium is provided. The system includes a radio frequency (RF) wireless antenna, batteryless sensor, and a network analyzer. The sensor has an ultra-high frequency dipole antenna that transmits data to the RF wireless antenna and a sensing element. The sensing element is operatively coupled to the dipolar antenna and detects the presence of molecular structures. When molecular structures are detected, data indicative of the presence of the molecular structures is transmitted to a radio frequency (RF) wireless communication antenna from the dipole antenna. The network analyzer receives the data from the RF wireless antenna and analyzes the data to determine a concentration of molecular structures.