Magnetic Sensor Filter Life Reminder System
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Solution Overview
Problem
Conventional water purification bottles cannot accurately determine when to replace the filter element, leading to ineffective water filtration and potential contamination after exceeding the specified usage limit.
Innovation Solution
A service life reminding system for a water bottle filter element, comprising a one-way valve head, magnetic sensor, circuit board, LED indicator, and elastic element, which counts the number of uses by sensing a magnetic element and changes the LED color from green to red when the predetermined usage limit is exceeded.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional water purification bottles are used without a counting mechanism, then the device complexity is low, but the measurement precision of filter element usage is poor
Solution Approach 1:
The patent replaces complex mechanical counting mechanisms with a magnetic sensing system. A magnetic element is embedded in the filter element, and a magnetic sensor on the circuit board detects its presence. Each time the filter element is installed, the magnetic sensor registers the magnetic element's position, automatically counting usage without complex mechanical gears or levers.
Solution Approach 2:
The circuit board serves multiple functions: it controls the water pumping mechanism, monitors the magnetic sensor for usage counting, and manages the LED reminder system. This multi-functionality reduces overall device complexity while achieving accurate usage measurement.
2Reliability
If no usage tracking system is implemented, then the device complexity is low, but the reliability of water purification is compromised after filter expiration
Solution Approach 1:
The system implements feedback through the LED reminder mechanism. The magnetic sensor continuously monitors the filter element's installation status and usage count. When the predetermined usage limit is reached, the circuit board receives the signal and triggers the LED to change color, providing visual feedback to the user that the filter needs replacement, thus maintaining purification reliability.
Solution Approach 2:
The patent uses color-changing LED beads to communicate filter status. The LED displays different colors (e.g., green for normal, red for replacement needed) based on the magnetic sensor's detection of usage count. This provides clear, intuitive visual feedback without requiring complex display screens or interfaces.
3Measurement precision
If approximate use time is used to judge filter replacement, then no additional components are needed, but the measurement precision of replacement timing is very inaccurate
Solution Approach 1:
The system performs preliminary action by embedding a magnetic element in the filter element during manufacturing. This magnetic identifier is prepared in advance, allowing the magnetic sensor to immediately recognize and count each filter installation event, eliminating the need for users to estimate usage time or manually track replacements.
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
Accurately reminds users when to replace the filter element, ensuring continued effective water purification and preventing contamination by providing a clear visual indication of the filter's service life.
Implementation Method 1
A magnetic element is fixed in the mounting bracket. A magnetic sensor is arranged on the circuit board. Both of the circuit board and the magnetic sensor are accommodated in the one-way valve head. When the one-way valve head slides to abut against the mounting bracket, the magnetic sensor senses the magnetic element.
Implementation Method 2
the service life reminding system for the water bottle filter element further comprises a light emitting diode (LED) bead fixedly arranged on the one-way valve head. The LED bead is electrically connected with the circuit board.
Data Source
AI summary
The present disclosure provides a service life reminding system for a water bottle filter element. The service life reminding system for the water bottle filter element includes a one-way valve head, a mounting bracket, and a circuit board. The mounting bracket includes a first accommodating cavity. A portion of the one-way valve head is movably accommodated in the first accommodating cavity. A magnetic element is fixed in the mounting bracket. A magnetic sensor is arranged on the circuit board. Both of the circuit board and the magnetic sensor are accommodated in the one-way valve head. When the one-way valve head slides to abut against the mounting bracket, the magnetic sensor senses the magnetic element. When the one-way valve head slides away from the mounting bracket until the one-way valve head separates from the mounting bracket, the magnetic sensor is unable to sense the magnetic element.