Water Filter Pitcher with Motion-Based Filter Expiration Notification
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Solution Overview
Problem
Existing water filtration systems, particularly pitcher-based systems, lack reliable methods for monitoring filter replacement, leading to potential consumption of unfiltered water due to inaccurate timing or contamination risks from sensor technologies.
Innovation Solution
A water pitcher equipped with a motion sensor and indication assembly that detects movement to notify users when the filter needs changing, using a light-emitting diode or similar device to alert when the filter has expired, thereby ensuring timely replacement without direct contact with the water.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If flow sensors or float sensors are used to monitor filtered water volume, then filter replacement timing can be tracked, but the system becomes complicated to manufacture and may introduce impurities and microbes into the water
Solution Approach 1:
The patent replaces mechanical sensors (flow sensors, float sensors) with an optical detection system. A light source emits light through the water, and a photodetector measures light transmission. The system monitors filter status by detecting changes in light transmission properties, eliminating the need for complex mechanical sensors that contact the water.
Solution Approach 2:
The patent introduces light as an intermediary medium to detect filter status. Instead of having sensors directly contact the water, the system uses light transmission through the water as an indirect measurement method. This intermediary approach allows monitoring without introducing contamination or requiring complex water-contacting components.
2Ease of manufacture
If timer-based filter replacement is used, then the system is simple to implement, but it becomes less reliable when actual water usage differs from anticipated usage
Solution Approach 1:
The patent implements a feedback mechanism where the optical detection system continuously monitors water properties and provides real-time information about filter status. The system compares actual light transmission measurements against reference values to determine when the filter needs replacement, creating a closed-loop feedback system that adapts to actual usage conditions rather than relying on predetermined timers.
Solution Approach 2:
The filter monitoring system serves itself by using the water's own optical properties (light transmission, absorption, scattering) as the sensing mechanism. The water itself provides the measurement signal, eliminating the need for external calibration or complex reference systems. The system automatically detects filter degradation through changes in how the water interacts with light.
3Measurement precision
If sensors are placed in direct contact with water to detect filter status, then real-time monitoring is achieved, but contamination risks increase
Solution Approach 1:
The patent substitutes mechanical/electrical sensors that would contact water with an optical detection system. Light sources and photodetectors are positioned to measure light transmission through the water without the sensing components touching the water. This eliminates the contamination risk while maintaining real-time monitoring capability.
Solution Approach 2:
The patent uses the water itself as a transparent medium through which light passes. The water acts as a natural optical window, allowing the detection system to measure filter status from outside the water container. This approach maintains measurement precision while preventing any sensor components from contacting the water.
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
This solution provides a reliable and contamination-free method for monitoring filter lifespan, ensuring clean drinking water by accurately notifying users when the filter requires replacement, thus preventing unfiltered water consumption.
Implementation Method 1
a sensor (e.g., a motion sensor) of the indication assembly can detect and/or otherwise sense the water within the container and/or movement of the container/pitcher from its resting position
Implementation Method 2
the motion sensor is operable to communicate and/or activate an indicator (e.g., light emitting diode), or similar notifying system and/or device
Data Source
AI summary
A water pitcher with sensing capabilities is provided. The water pitcher includes at least a container adapted or otherwise shaped for retaining water therein, and a cover adapted to cover at least a portion of the container. The water pitcher further includes an indication assembly attached to the container and/or the cover. The indication assembly includes at least a sensor for detecting movement of contents within the water pitcher and/or movement of the pitcher upon expiration of a filter within the pitcher. Upon detecting movement of the pitcher, the sensor is configured to activate an indicator (e.g., an LED) for notifying a user of the expired filter and/or movement of the pitcher during the expiration period of the filter.