Temperature Traceable Indicator for Vaccine Storage Deviation Timing
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Solution Overview
Problem
Current temperature indicators cannot accurately detect both temperature elevation and lowering within a specific temperature range required for managing vaccines and bio pharmaceuticals, which is between 2 to 8° C., and cannot specify the time of deviation from this range.
Innovation Solution
A temperature traceable indicator with multiple temperature indicators on a substrate, where each indicator changes color irreversibly within ±2° C. of each other and at different times after deviating from the set temperature range, allowing for the specification of the time of temperature deviation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a single temperature indicator is used, then the device complexity is low, but it cannot detect both temperature elevation and lowering within a specific temperature range
Solution Approach 1:
The patent divides the temperature monitoring function into multiple segments by using several temperature indicators with different activation temperatures. Each indicator is responsible for detecting a specific temperature threshold (e.g., 2°C, 8°C), and together they cover the entire required monitoring range. This segmentation allows the system to detect both temperature elevation and lowering without requiring a single complex indicator.
Solution Approach 2:
The patent makes each temperature indicator multi-functional by designing them to serve dual purposes: detecting both upper and lower temperature deviations from the target range. By strategically selecting activation temperatures for different indicators, the system achieves comprehensive temperature monitoring capability across the 2-8°C range using the same type of indicator components.
2Loss of information
If conventional temperature indicators are used, then they can indicate temperature deviation, but they cannot specify the time of deviation
Solution Approach 1:
The patent applies preliminary action by pre-setting multiple temperature indicators with different activation temperatures and response characteristics before the actual temperature monitoring begins. Each indicator is prepared in advance to trigger at specific temperature thresholds, so when temperature deviation occurs, the system can immediately determine both the temperature and the time of deviation based on which indicators have activated. This eliminates the need for complex real-time calculation systems.
3Measurement precision
If temperature indicators with different activation temperatures are used, then the temperature detection accuracy improves, but the manufacturing precision requirement increases
Solution Approach 1:
The patent utilizes parameter changes by selecting temperature indicators with inherently different activation temperature parameters. Rather than requiring high manufacturing precision to make identical indicators respond at different times, the system deliberately chooses indicators with factory-calibrated different temperature thresholds. This approach shifts the precision requirement from manufacturing variability to controlled parameter selection, improving overall temperature detection accuracy while maintaining reasonable manufacturing standards.
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 temperature deviations and their timing, ensuring the quality management of temperature-sensitive products by providing a clear indication of when the temperature has deviated from the set range.
Implementation Method 1
temperature indicators that irreversibly change color when the temperature deviates from a set temperature range
Data Source
AI summary
To address the problem of providing a temperature history indicator capable of specifying a time when a temperature deviated from a set temperature range, a temperature history indicator according to the present invention is characterized in being provided with a substrate and temperature indicators that irreversibly change color upon deviation from a set temperature range, and in that a plurality of the temperature indicators are provided on the substrate, the temperatures at which the temperature indicators change color a within ±2° C. of each other, and the temperature indicators change color after different amounts of time from deviation from the set temperature range.