Handheld Printer Thermometer Shelf-Life Encoding
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Solution Overview
Problem
The food industry faces challenges in accurately providing and updating expiration dates on perishable items, especially when products are stored at non-standard temperatures or have ingredient variations, making it difficult to determine the discard date efficiently.
Innovation Solution
A hand-held portable printer with a thermometer and microprocessor that calculates the end-of-shelf-life date based on initial temperatures and expected shelf-life information, printing labels with the discard date and time, and optionally includes wireless communication, RFID, and barcode scanning capabilities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If manual labeling of expiration dates is performed, then accuracy can be maintained for standard storage conditions, but time consumption increases significantly
Solution Approach 1:
The system enables self-service by having the perishable item itself (through its temperature sensor) provide the data needed to determine its shelf life. The item's own temperature characteristics are used to calculate its expiration date, eliminating the need for manual intervention in the measurement process.
Solution Approach 2:
The manual mechanical process of checking, calculating, and labeling expiration dates is replaced by an automated electronic system that uses temperature sensors, microprocessors, and thermal printers to automatically determine and label shelf life based on stored temperature data.
2Productivity
If temperature-based shelf life calculation is implemented, then labeling speed improves, but device complexity increases
Solution Approach 1:
The handheld device combines multiple functions into a single portable unit: temperature sensing, data processing, shelf life calculation, and thermal printing. This multi-functionality consolidates what would otherwise require separate devices and manual processes into one integrated system.
Solution Approach 2:
The system performs preliminary actions by storing temperature data and calculating shelf life in advance. Temperature readings are captured and processed before the actual labeling occurs, allowing the expiration date to be determined proactively rather than reactively.
3Ease of manufacture
If standard storage temperature assumptions are used, then calculation simplicity is maintained, but accuracy decreases for non-standard storage conditions
Solution Approach 1:
The system transitions from static, fixed shelf life calculations to dynamic calculations that continuously adapt to actual stored temperature conditions. The shelf life is recalculated based on real-time temperature data, allowing the system to handle varying storage conditions without requiring manual intervention.
Solution Approach 2:
The system implements feedback by continuously monitoring actual storage temperatures and using this information to adjust shelf life calculations. Temperature data is fed back into the calculation process, allowing the system to correct for deviations from standard storage conditions and maintain accuracy.
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 efficient and accurate determination and labeling of perishable items' shelf-life, improving inventory management and ensuring compliance with health and safety guidelines by automating the process of determining and displaying expiration dates.
Implementation Method 1
taking the temperature of a perishable item
Data Source
AI summary
There is disclosed method and apparatus for encoding labels with information relating to temperature, life expectancy and/or discard dates and times of products such as perishable items. A hand-held portable printer mounts a thermometer which can sense the temperature of an item and the printer can print a label bearing the sensed temperature and/or other related data.