Filter Status Module for Container Filtration Device
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Solution Overview
Problem
Existing water filtration systems, particularly water pitcher types, lack effective and reliable methods for monitoring filter replacement needs, often requiring complex sensors that can introduce impurities or using timers that do not account for varying usage patterns.
Innovation Solution
A fluid filtration device with a filter status module that includes a dispensing sensor and user interface, tracking dispensing events, volume, and elapsed time to provide accurate filter status updates without direct contact with the water, using a processing unit to output filter replacement notifications through a simple and reliable LED indicator system.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If flow sensor or float sensor is used to measure water volume, then filter status can be monitored, but the device complexity increases and impurities may be introduced into water
Solution Approach 1:
The patent extracts the monitoring function from direct water contact by using a dispensing sensor that detects container manipulation events rather than measuring water volume directly. This separates the measurement function from the water contact zone, eliminating the need for complex flow sensors or float sensors that would introduce impurities.
Solution Approach 2:
The patent introduces an intermediary approach by using a dispensing sensor to detect container tilting or manipulation events as a proxy for water dispensing. Instead of directly measuring water volume with complex sensors, the system uses the container's physical state changes as an indirect indicator of filtration usage.
2Device complexity
If timer is used to indicate filter replacement time, then device complexity is reduced, but the system cannot adapt to varying usage patterns
Solution Approach 1:
The patent implements a dynamic monitoring system that adapts to varying usage patterns by counting actual dispensing events rather than relying on fixed time intervals. The system continuously updates the filter status based on real-time dispensing event counts, allowing it to adjust to different usage rates and patterns dynamically.
Solution Approach 2:
The patent incorporates feedback mechanisms where the dispensing sensor continuously monitors container manipulation events and provides real-time feedback to the control system. This feedback loop allows the system to track actual water dispensing volume and adjust filter replacement recommendations based on real usage data rather than predetermined time schedules.
3Measurement precision
If flow sensor or float sensor is used to measure water volume, then filter status can be monitored, but impurities and microbes may be introduced into water
Solution Approach 1:
The patent extracts the measurement function from the water contact zone by using a dispensing sensor that detects container manipulation events. This eliminates the need for sensors that would be in direct contact with water, thereby preventing introduction of impurities and microbes into the filtered water supply.
Solution Approach 2:
The patent uses an intermediary detection method where the dispensing sensor monitors container tilting or manipulation as a proxy indicator for water dispensing. This indirect measurement approach avoids direct water contact with the sensor, preventing contamination while still accurately tracking filtration usage.
Data Source
AI summary
A filter status module for use with a container based filtration device includes a dispensing sensor and a user interface communicatively coupled to a processing unit. The processing unit counts a number of dispensing events, duration and/or angle of tilt signaled by the dispensing sensor and outputs a filter status on the user interface as a function of the number of dispensing events, duration and/or angle of tilt. The processing unit may further track an elapsed period of time from insertion of a new filter and output the filter status as a further function of the elapsed period of time.