Beverage Capsule Visual Recognition to Prevent Unapproved Usage
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Solution Overview
Problem
Existing beverage-making apparatuses face issues with reliable and cost-effective capsule identification, leading to incorrect or unapproved capsule usage, which can damage the machine and result in suboptimal beverage preparation, due to the limitations of electromagnetic and optical recognition methods.
Innovation Solution
An apparatus equipped with an image acquisition device along the capsule feed path that captures images of a graphical element on the capsule lid, such as a trademark, and compares them to reference images to ensure compatibility and approval, using an electronic processing unit to enable beverage production only if a match is verified.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If electromagnetic identification elements (RFID) are used in capsules, then identification reliability is improved, but manufacturing cost increases due to disposable identification elements
Solution Approach 1:
The identification function is extracted from the capsule body and placed on the capsule lid, which is a separate component. This allows the identification element to be positioned in a location that is easier to manufacture and less costly, while maintaining reliable identification functionality.
Solution Approach 2:
Instead of using expensive electromagnetic RFID elements, the patent uses visual copies (graphics, logos, patterns) that can be reproduced on the capsule lid using standard printing techniques. These visual identifiers serve the same identification purpose at a fraction of the cost.
2Adaptability or versatility
If optical recognition devices are placed in the extraction chamber, then capsule identification is enabled, but recognition reliability deteriorates over time due to beverage residues and food substance caking
Solution Approach 1:
The optical recognition device captures an image of the capsule lid identifier before the capsule enters the extraction chamber and before any beverage preparation occurs. This preliminary identification action prevents contamination issues, as the sensor never needs to be in the extraction chamber during beverage making.
Solution Approach 2:
The capsule lid serves as an intermediary carrier of identification information. Instead of placing the sensor directly in the extraction chamber where it would be contaminated, the system uses the lid's external surface as a medium that can be read remotely, separating the identification function from the contaminated environment.
3Adaptability or versatility
If bar codes or QR codes are reproduced on capsules, then optical recognition is enabled, but capsule aesthetic appeal deteriorates
Solution Approach 1:
Instead of traditional bar codes or QR codes, the patent uses graphical identifiers that vary in color, pattern, and design. These graphics can be integrated into the capsule lid's aesthetic design, making identification elements visually appealing rather than utilitarian add-ons.
Solution Approach 2:
The identification graphics are applied specifically to the lid portion of the capsule, allowing the main body of the capsule to maintain its clean, aesthetic appearance. The lid becomes a dedicated zone for identification while the rest of the capsule preserves its visual appeal.
4Productivity
If automatic capsule identification and beverage supply selection are implemented, then beverage preparation optimization is improved, but apparatus cost increases making it inaccessible to all consumers
Solution Approach 1:
The patent replaces complex electromagnetic RFID reading systems with simple optical sensors and image processing. This substitution dramatically reduces the cost and complexity of the apparatus while maintaining automatic identification and beverage selection capabilities.
Solution Approach 2:
The capsule itself carries all the identification information needed on its lid, allowing the apparatus to automatically identify and select beverage parameters without requiring complex databases or external systems. The capsule provides its own identification data, simplifying the apparatus requirements.
Data Source
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AI summary
An apparatus for making beverages using capsules (2) containing a food substance, comprising an extraction unit (3) in which an openable extraction chamber (4) is made, an infeed section (9) for a capsule (2), a feed path (10) for the capsule (2) in the apparatus (1) from the infeed section (9), and at least one image acquisition device (12) operating in the range of visible light, positioned along the feed path (10) outside the extraction chamber (4), and designed, in use, when the capsule (2) is positioned in an image capture zone (13) located along the feed path (10), to capture images of at least an identification portion (14) of the capsule (2) on which a graphical element (15) is present and visible; the image acquisition device (12); an electronic processing unit (20) is connected to the image acquisition device (12) and is programmed to selectively enable or not enable the making of a beverage by performing the following operating steps based on a comparison between a first image detected by the image acquisition device (12) and one or more reference images saved in the apparatus (1).