Appliance water filter system having memory and authentication functionality
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Solution Overview
Problem
Current water filtration systems lack effective mechanisms for tracking consumable status, authentication, and automatic replacement, leading to inefficient filter management and potential use of non-conforming or expired filters.
Innovation Solution
A water filter system with a memory storage unit that communicates with an appliance control unit to define filter use states, including fluid flow rates and lifetime filtration amounts, and utilizes data transfer protocols to notify users when filters need replacement, while also enabling authentication and automatic exchange programs through NFC technology.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a water filter is used without memory storage and authentication, then the device complexity is low, but the reliability of filter status tracking and authentication is poor
Solution Approach 1:
The patent embeds a memory storage unit within the water filter cartridge itself, creating a nested structure where the memory unit is contained inside the filter housing. This allows the filter to store and communicate its own status information (usage, expiration, authentication data) without requiring external tracking systems, thereby improving reliability while minimizing added complexity.
Solution Approach 2:
The water filter system performs self-tracking and self-authentication through its integrated memory storage unit. The filter automatically records its own usage data, determines its own status (active, expired, replaced), and communicates this information to the appliance control unit without requiring manual intervention or complex external monitoring systems.
2Measurement precision
If data transfer protocols are implemented for filter communication, then the measurement precision of filter status is improved, but the device complexity increases
Solution Approach 1:
The patent replaces manual filter status checking (mechanical/physical inspection) with automated electronic data transfer between the memory storage unit and the appliance control unit. This substitution enables precise tracking of filter usage, expiration dates, and authentication status through digital communication protocols, significantly improving measurement precision while keeping the data transfer mechanism simple and integrated.
3Reliability
If authentication functionality is added to prevent non-conforming filters, then the reliability of filter authorization is improved, but the ease of operation deteriorates
Solution Approach 1:
The authentication process is automated through the memory storage unit that contains authentication data and the appliance control unit that automatically verifies this data. When a filter is installed, the system self-authenticates by reading the memory unit and comparing authentication credentials, eliminating the need for manual verification steps and maintaining ease of operation while ensuring reliable authorization.
Solution Approach 2:
The system provides immediate feedback during filter installation by automatically reading the memory storage unit and determining whether the filter is authenticated and conforming. The appliance control unit communicates the authentication result to the user interface, providing clear feedback on filter status without requiring manual checking, thus maintaining operational simplicity while ensuring reliability.
4Productivity
If the memory storage unit tracks filter usage and expiration, then the productivity of filter management is improved, but the loss of time for filter replacement increases
Solution Approach 1:
The memory storage unit proactively tracks filter usage and determines expiration status before the filter actually expires. The system provides advance notification to the user when the filter is approaching expiration, allowing timely replacement planning. This preliminary tracking and notification mechanism improves filter management productivity by preventing overdue replacements while minimizing disruption to water supply during the replacement process.
Data Source
AI summary
A water filter system for an appliance includes a filter head assembly, a first appliance control unit positioned proximate the filter head assembly and a water filter having a memory storage unit. The water filter is selectively placed in communication with the first appliance control unit to define a filter use state. The filter use state is further defined by a first potential fluid-flow rate through the water filter and a predetermined lifetime fluid filtration amount. A data transfer mechanism defines a second data-transfer protocol between the memory storage unit and the first appliance control unit when an actual fluid filtration amount of the water filter reaches the predetermined lifetime fluid filtration amount. The second data transfer protocol defines a notification state defined by a second potential fluid flow rate, the second potential fluid flow rate being less than the first potential fluid flow rate.