Pressure Detector Grooves Prevent Diaphragm Adhesion
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing pressure detectors face issues with responsiveness deterioration due to tight contact between the diaphragm and electrodes caused by pressure differences, which also reduces detection sensitivity and complicates miniaturization.
Innovation Solution
The pressure detector design includes grooves on the boards in communication with pressure inlets, preventing the formation of closed spaces between the diaphragm and electrodes, thus maintaining responsiveness and avoiding the reduction in effective electrode area.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the diaphragm and electrode are brought into tight contact to protect the diaphragm from excessive pressure, then the diaphragm is protected from damage, but the pressure difference causes tight contact that hinders immediate separation and deteriorates responsiveness
Solution Approach 1:
The board body is segmented by forming grooves that divide the contact surface between the diaphragm and electrode. This segmentation prevents the formation of a large closed space, allowing pressure to be equalized more quickly and enabling faster separation after contact, thus improving responsiveness while maintaining protection functionality
Solution Approach 2:
The groove structure creates a porous-like configuration in the board body that allows pressure equalization through the grooves. This enables the system to maintain the protective contact function while allowing rapid pressure equalization, preventing tight contact adhesion and improving responsiveness
2Speed
If multiple pressure inlets are provided to prevent closed space formation and maintain responsiveness, then responsiveness is improved, but the effective area of the electrode is reduced, lowering detection sensitivity
Solution Approach 1:
Instead of adding multiple pressure inlets in the planar dimension, the invention introduces grooves that extend in the depth dimension of the board body. This dimensional change allows pressure equalization pathways to be created without occupying additional surface area, thus maintaining electrode effective area and detection sensitivity while improving responsiveness
3Speed
If the electrode area is reduced to accommodate multiple pressure inlets, then responsiveness is improved, but detection sensitivity is reduced
Solution Approach 1:
The groove structures are formed in the depth dimension of the board body rather than occupying surface area. This allows pressure equalization functionality to be added without reducing the electrode's effective sensing area, maintaining both responsiveness and detection sensitivity
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 design enhances responsiveness and detection sensitivity by preventing tight contact and ensuring adequate adhesion areas, even during miniaturization, without the need for multiple pressure inlets that reduce electrode effectiveness.
Implementation Method 1
the first board body includes a first pressure inlet penetrating through the first board body and a first groove provided on the surface facing the first diaphragm electrode, the first groove being in communication with the first pressure inlet, and the second board body includes a second pressure inlet penetrating through the second board body and a second groove provided on the surface facing the second diaphragm electrode, the second groove being in communication with the second pressure inlet
Data Source
Figure 1
Figure 2
Figure 3
AI summary
A pressure detector (1) includes a first board (2) provided with a first board electrode (22), a second board (3) provided with a second board electrode (32), and a sensing unit (4) provided with a first diaphragm electrode (42) and a second diaphragm electrode (43). A first board body (21) of the first board (2) is provided with a first pressure inlet (23) penetrating through the first board body (21) and a first groove (24) provided on a surface facing the first diaphragm electrode (42), the first groove (24) being in communication with the first pressure inlet (23). A second board body (31) of the second board (3) is provided with a second pressure inlet (33) penetrating through the second board body (31), and a second groove (34) provided on a surface facing the second diaphragm electrode (43), the second groove (34) being in communication with the second pressure inlet (33).