Barcoded Quality Indicators for Time-Temperature Threshold Detection
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Solution Overview
Problem
Existing quality management systems lack efficient methods to indicate exceedance of time and temperature thresholds in a manner that is machine-readable and easily interpretable for product quality assessment.
Innovation Solution
A quality management system utilizing barcoded quality indicators that change their machine-readable status in response to time and temperature thresholds, featuring a first barcode that becomes unreadable and a second barcode that becomes readable upon threshold exceedance, allowing for real-time product quality assessment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a quality indicator system is designed to provide machine-readable indications of time and temperature threshold exceedance, then measurement precision and reliability are improved, but device complexity increases due to the need for multiple barcodes and coloring mechanisms
Solution Approach 1:
The quality indicator is segmented into multiple functional components: a first barcode for initial identification, a second barcode for threshold exceedance indication, and a coloring agent system with a coloring pathway. This segmentation allows each component to perform a specific function, enabling precise threshold detection while maintaining a modular structure that can be manufactured separately and assembled systematically.
Solution Approach 2:
The first barcode is pre-configured on the indicator before use, allowing for initial product identification and tracking. The coloring agent is pre-positioned in a reservoir with a defined coloring pathway, ready to activate automatically when temperature and time thresholds are exceeded. This preliminary configuration ensures that the measurement system is prepared and functional from the outset without requiring additional activation steps.
2Loss of information
If the system uses multiple barcodes with color changes to indicate quality status, then information completeness is improved, but ease of operation deteriorates due to the complexity of reading and interpreting multiple barcode states
Solution Approach 1:
The system employs color changes in the coloring agent as a visual indicator of threshold exceedance. When the temperature and time thresholds are exceeded, the coloring agent travels along the coloring pathway and changes the color of specific portions of the barcodes. This color change mechanism provides immediate, intuitive visual feedback about product quality status, complementing the machine-readable barcode information and eliminating the need for complex interpretation of multiple barcode states.
Solution Approach 2:
The coloring agent acts as an intermediary between the temperature/time sensing mechanism and the barcode display system. It translates the physical conditions (temperature and time exposure) into visible color changes that can be easily interpreted by operators, while simultaneously affecting the machine-readable properties of the barcodes. This intermediary mechanism simplifies the overall operation by providing a direct visual cue that complements the automated reading process.
3Reliability
If the first barcode becomes unreadable upon threshold exceedance, then reliability of quality indication is improved, but loss of information increases as the original product identification is lost
Solution Approach 1:
The barcode system is segmented into two distinct codes: the first barcode contains the original product identification information, and the second barcode is designed to become readable when the threshold is exceeded. This segmentation ensures that product identification data is preserved in the first barcode while the second barcode provides the quality status indication, allowing both functions to coexist without interference.
Solution Approach 2:
The barcode system is designed to be dynamic rather than static. The readability of the barcodes changes based on the temperature and time conditions experienced by the product. The first barcode may become unreadable or change its reading properties when the threshold is exceeded, while the second barcode becomes readable. This dynamic behavior provides reliable quality indication while the system maintains the capability to track product identification through the coloring pattern and the interpretor's ability to read the indicator in its current state.
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 system provides immediate and accurate indications of product quality by changing the readability of barcodes in response to temperature and time thresholds, enhancing quality management and reducing the risk of product deterioration.
Implementation Method 1
a coloring agent pathway operative to allow the coloring agent to move, at a rate which is at least partially a function of time, from the first location to the first and second colorable areas simultaneously
Data Source
AI summary
A quality management system for products including a multiplicity of barcoded quality indicators, a barcode indicator reader and a product type responsive indication interpreter, each of the barcoded quality indicators including a first barcode including at least one first colorable area, the first barcode being machine-readable before exceedance of the at least one time and temperature threshold, at least a second barcode including at least one second colorable area, the second barcode not being machine-readable before exceedance of the at least one time and temperature threshold, a coloring agent located at a first location on the indicator and a coloring agent pathway operative to allow the coloring agent to move, from the first location to the first and second colorable areas simultaneously thereby causing the first barcode to become unreadable and at the same time causing the second barcode to become machine-readable.