Storage Device Electrode Wall Thickness Segmentation
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Solution Overview
Problem
Current storage devices lack accuracy in detecting the storage amount of objects, particularly in liquid ejection systems like ink jet printers, where precise measurement of ink levels is crucial for optimal performance and to prevent running out of ink.
Innovation Solution
A storage device with a configuration of multiple walls, including a first and second electrode arrangement supported by thinner and thicker portions respectively, and a detection circuit that uses capacitance measurement between the electrodes to accurately determine the liquid level, enhancing detection accuracy and preventing ink depletion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a conventional detection electrode arrangement is used in a storage device, then the device structure is simple, but the detection accuracy of the storage amount is insufficient
Solution Approach 1:
The storage device wall is divided into multiple portions with different thicknesses. A first portion of the wall is made thinner to position the detection electrode closer to the liquid, improving detection accuracy, while a second portion maintains greater thickness for structural support. This segmentation allows the detection function and structural function to be optimized independently in different spatial locations.
Solution Approach 2:
Different portions of the storage device wall are given different thicknesses according to their specific functional requirements. The first portion near the detection electrode is thinner to enhance measurement precision, while the second portion is thicker to provide mechanical strength. This local differentiation of quality resolves the contradiction between detection accuracy and structural integrity.
2Measurement precision
If the wall thickness is reduced to improve detection accuracy, then the detection precision improves, but the structural strength decreases
Solution Approach 1:
The wall structure is segmented into multiple portions with different thicknesses. The first portion is thinned to improve detection accuracy by reducing the distance between the detection electrode and the liquid, while the second portion maintains sufficient thickness to ensure structural strength. This segmentation allows simultaneous optimization of both detection precision and structural integrity.
Solution Approach 2:
The wall thickness is locally optimized based on functional requirements. The first portion has reduced thickness to enhance detection performance, while the second portion has increased thickness to provide mechanical support. This local quality differentiation resolves the contradiction between detection accuracy and structural strength.
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
The solution improves the detection accuracy of the storage amount in liquid ejection systems, ensuring reliable operation by precisely measuring ink levels and preventing unexpected ink exhaustion.
Implementation Method 1
The remaining amount detection sensor includes a detection electrode arranged to face the container and a guard electrode arranged to face the detection electrode. The remaining amount detection sensor detects the remaining amount of the contents of the container based on a capacitance measured by the detection electrode with a potential of the guard electrode as a reference potential.
Data Source
AI summary
A storage device includes a storage section including a plurality of walls and storing an object in a space surrounded by the plurality of walls, a first electrode provided in a first portion of a first wall among the plurality of walls, a second electrode provided in a second wall among the plurality of walls, and a first support portion supporting the first portion and a second portion among the plurality of walls. The first portion is thinner than the second portion.