Handheld Fluorescence Inspection Tool for Contamination Detection
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Solution Overview
Problem
Current food inspection methods are limited by the inability to detect non-visible contamination, inspector fatigue, and the lack of mobility and integration in existing automated systems, which can lead to inadequate inspections and increased risks of food-related illnesses.
Innovation Solution
A hand-held inspection tool equipped with a video camera, spectral band-pass filter, and excitation light that induces fluorescence in contamination, allowing for real-time detection and transmission of images to remotely located inspectors for further analysis.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If automated inspection processes using large fixed-base mechanisms are used, then measurement precision is improved, but device complexity and mobility are worsened
Solution Approach 1:
The patent replaces complex mechanical fixed-base inspection mechanisms with a handheld device that uses optical excitation and fluorescence detection. The excitation light source activates fluorescent markers on contamination, and the camera captures the emitted light, eliminating the need for large mechanical structures while maintaining detection precision.
Solution Approach 2:
The inspection method utilizes fluorescence color changes to detect contamination. The excitation light causes fluorescent markers to emit light at different wavelengths, creating visible color differences that indicate the presence of contamination. This optical approach simplifies the inspection system while improving detection capability.
2Reliability
If multiple remotely located inspectors participate in inspection, then reliability is improved, but device complexity and information transmission requirements are worsened
Solution Approach 1:
The handheld inspection device incorporates real-time image transmission capability that sends captured images to remote inspectors immediately. This feedback loop allows remote inspectors to review images, provide guidance, and verify findings while the inspection is ongoing, improving reliability without requiring complex post-inspection analysis.
Solution Approach 2:
The device creates digital copies of the inspection scene through camera imaging and transmits these copies to remote locations. This allows multiple inspectors to view the same inspection data simultaneously, enabling collaborative verification and reducing information loss while maintaining system simplicity.
3Measurement precision
If specialized spectral filters and excitation lights are used, then measurement precision is improved, but use of energy and device complexity are worsened
Solution Approach 1:
The device uses specific wavelength parameters for excitation light and spectral filters to optimize fluorescence detection. By selecting precise wavelength ranges that match the fluorescent markers, the system achieves high detection precision while minimizing energy consumption compared to broad-spectrum lighting approaches.
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 thorough, mobile, and documented inspections, improving detection accuracy and reducing the risk of food-related illnesses by allowing on-site and remote inspectors to collaborate in real-time, enhancing the ability to identify and address contamination effectively.
Implementation Method 1
At least one excitation light is disposed on the face of the sensing head. The light induces a target to emit fluorescence corresponding with the selected wave band of light that passes through the video camera filter to the video camera lens.
Data Source
AI summary
The hand-held inspection tool enhances the ability of an on-site inspector to detect and communicate the presence of contamination on an object or in an area. An on-site inspector directs an excitation light in the sensing head of the tool into an area of interest. If the targeted contamination is present, the excitation light causes the contamination to emit fluorescence. The emitted fluorescent light passes through a narrow spectral band-pass video camera filter and is detected by a video camera mounted in the tool sensing head. The video camera transmits the image to a display visible to the on-site inspector. The invention also includes a means of recording, documenting, and wirelessly communicating the inspection process so that remotely located personnel can view the inspection, and respond to the inspection findings in real time.