Shelf Life Warning Tag with Autonomous Time Monitoring
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Solution Overview
Problem
Consumers often fail to notice the shelf life of products, leading to potential safety risks as they may unknowingly consume expired items, even after preventive measures like barcodes are used during purchase.
Innovation Solution
A warning tag with a storage unit for product information, a clock unit for real-time tracking, and a control unit that outputs warnings via a display or audio module when the product's shelf life is approaching or has expired, ensuring consumers are actively alerted.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If consumers rely on self-inspection of merchandise labels to check shelf life, then no additional device is required, but consumers may neglect or fail to notice the shelf life information
Solution Approach 1:
The warning tag autonomously monitors the product's shelf life using its internal clock unit and stored time data, automatically generating warnings without requiring consumer intervention. The system serves itself by continuously comparing current time with the stored end-of-shelf-life time and activating warnings when thresholds are approached or exceeded.
Solution Approach 2:
The system provides continuous feedback to consumers through visual display modules or audio modules that indicate the product's shelf life status. The feedback mechanism includes different warning modes (e.g., different colors or audio signals) based on whether the product is approaching or has exceeded its shelf life, enabling consumers to immediately understand the product status without active inspection.
2Reliability
If barcode readers are used at checkout to determine shelf life status, then consumers can avoid purchasing expired products, but consumers remain at risk after purchase
Solution Approach 1:
The warning tag performs preliminary actions by continuously monitoring the shelf life status before the consumer needs to check. The system proactively generates warnings in advance when the product approaches or exceeds its shelf life, eliminating the need for post-purchase monitoring and ensuring safety throughout the entire product lifecycle.
Solution Approach 2:
The monitoring function operates continuously from the moment the product is purchased until its shelf life expires. The clock unit runs continuously, and the control unit continuously compares current time with stored time data, ensuring uninterrupted shelf life monitoring without requiring periodic consumer intervention or additional time investment.
3Reliability
If active warning systems are implemented on products, then consumers are alerted about shelf life status, but the device complexity increases
Solution Approach 1:
The warning tag system is segmented into distinct functional modules: a storage unit for time data, a clock unit for time generation, a control unit for logic processing, and separate warning units (display module and/or audio module). This segmentation allows each component to perform its specific function independently, simplifying the overall system design and making it easier to manufacture and maintain.
Data Source
AI summary
A warning tag for providing an indication relevant to shelf life of a product is to be disposed on a product. The warning tag includes a storage unit, a clock unit, a control unit and a warning unit. The storage unit stores product information of the product. The product information includes time data associated with end of the shelf life of the product. The clock unit generates a current time. The control unit is electrically coupled to the storage unit and the clock unit, and outputs a warning signal based on the current time and the end of the shelf life of the product. The warning unit is electrically coupled to the control unit, and generates the indication according to the warning signal.