Pressure Sensor Cover With Dual Holes For Wind Discharge

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Solution Overview

Problem

Wind entering a pressure sensor through an introduction hole can press the pressure detection element, leading to decreased accuracy in pressure measurements.

Innovation Solution

The pressure sensor features a cover member with a first and second through hole positioned to avoid overlapping the detection element, allowing wind to be discharged and reducing pressure increase, thereby minimizing detection errors and dust adhesion.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Device complexity

If a single introduction hole is provided in the cover member, then the structure is simple, but wind enters the pressure sensor and presses the detection element, decreasing detection accuracy

Engineering Contradiction:

Improvestructure simplicityVSAvoidpressure detection accuracy

Core Design Contradiction:

Device complexityVSMeasurement precision

Solution Approach 1:

The single introduction hole is divided into multiple introduction holes (first and second introduction holes) positioned at different locations on the cover member. This segmentation allows wind to enter through one hole and exit through another, preventing direct pressure on the detection element while maintaining structural simplicity

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The cover member acts as an intermediary structure between the external environment and the detection element. By positioning multiple introduction holes on the cover member rather than directly exposing the detection element, the cover mediates the interaction between wind and the detection element, allowing pressure equalization without direct impact

Inventive Principle:

Principle #24Intermediary (Mediator)

2Reliability

If the introduction hole is positioned to facilitate pressure introduction, then pressure detection is enabled, but wind directly presses the detection element, causing detection errors

Engineering Contradiction:

Improvepressure detection functionVSAvoiddetection accuracy

Core Design Contradiction:

ReliabilityVSMeasurement precision

Solution Approach 1:

The solution transitions from a single-point pressure introduction to a distributed multi-point introduction system. By arranging multiple introduction holes at different spatial positions on the cover member, the system introduces pressure from multiple dimensions rather than a single direction, preventing focused wind pressure on the detection element while maintaining detection functionality

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

Solution Approach 2:

Different regions of the cover member are assigned different functions: some regions contain introduction holes for pressure equalization, while other regions maintain detection element protection. The introduction holes are specifically positioned in areas that do not create direct wind paths to the detection element, optimizing local qualities for different purposes

Inventive Principle:

Principle #3Local quality

3Measurement precision

If the detection element is exposed to the introduction hole region, then pressure is effectively introduced, but dust adheres to the detection element, causing erroneous detection

Engineering Contradiction:

Improvepressure introduction efficiencyVSAvoiddust adhesion

Core Design Contradiction:

Measurement precisionVSObject-affected harmful factors

Solution Approach 1:

The harmful factor (dust) is extracted from the detection path by positioning the detection element away from the introduction hole regions. The introduction holes are located on the cover member at positions that do not create direct exposure paths for dust particles to reach the detection element, while still allowing effective pressure introduction through the cover member material

Inventive Principle:

Principle #2Taking out (Extraction)

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 effectively reduces detection errors caused by wind and dust adhesion, maintaining accurate pressure measurements by preventing direct wind impact on the detection element and facilitating dust reduction.

Implementation Method 1

a detection element that detects a change in pressure

Methodology Applied

Scientific EffectPressure detection:

Data Source

PatentUS11572157B2Pressure sensor and moving device having pressure sensor

Publication Date: 2023.02.07 OMRON CORP

AI summary

A pressure sensor includes a detection element that detects a change in pressure, and a cover member that accommodates the detection element and that includes a first through hole and a second through hole. Each of the first through hole and the second through hole is provided at a position that does not overlap the detection element in a front view of the respective hole.