Elastomeric Membrane Pressure Indicator with Color LED Feedback
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Solution Overview
Problem
Conventional digital pressure sensors in enclosed spaces are unreliable due to lack of validity and often fail to provide quick and ascertainable pressure states, particularly in environments requiring specific positive or negative pressure conditions.
Innovation Solution
A pressure sensing and indicating system that includes a housing with an elastomeric membrane capable of flexing inward or outward to indicate positive or negative pressure states, accompanied by color illumination and symbol projection, along with digital pressure sensors and speakers for audible feedback.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional digital pressure sensors are used in enclosed spaces, then pressure measurement function is provided, but reliability is poor due to lack of validity and frequent damage
Solution Approach 1:
The patent replaces conventional electronic digital pressure sensors with a mechanical pressure indicator system featuring an elastomeric membrane that flexes in response to pressure changes. This mechanical system provides direct, observable indication of pressure states (positive/negative) through membrane deformation, eliminating reliance on electronic sensors that suffer from reliability issues. The membrane's physical response to pressure provides inherent validity and trustworthiness.
Solution Approach 2:
The patent employs color changes through LED indicators that display different colors corresponding to different pressure states (e.g., green for positive pressure, red for negative pressure). This visual color-coding system enhances the reliability of pressure indication by providing immediate, unambiguous visual feedback that is easily ascertained from a distance, addressing the problem of unreliable conventional digital displays.
2Speed
If conventional digital pressure sensors are used, then pressure data is provided, but quick and ascertainable pressure state indication from a distance is not achieved
Solution Approach 1:
The patent transitions from providing pressure information solely through digital readouts to adding a visual dimension through the elastomeric membrane's physical deformation and color-coded LED indicators. The membrane's flexing outward or inward provides immediate visual cues about pressure states that can be ascertained quickly from a distance, eliminating the need to read numerical data closely.
Solution Approach 2:
The system uses color-coded LED indicators (e.g., green for positive pressure, red for negative pressure) that provide immediate visual feedback about pressure states. These color changes are visible from a distance and can be ascertained instantly, addressing the problem of slow or difficult-to-read conventional digital displays.
3Ease of operation
If an elastomeric membrane is added for visual indication, then pressure state visibility is improved, but device complexity increases
Solution Approach 1:
The elastomeric membrane serves multiple functions simultaneously: it acts as a pressure-sensing element, a visual indicator through its flexing deformation, and a mounting surface for the LED indicators. This multi-functionality reduces the need for separate components and simplifies the overall system architecture despite the added visual indication capabilities.
Solution Approach 2:
The patent merges the pressure-sensing function with the visual indication function by integrating the LED indicators directly onto or near the elastomeric membrane. The membrane and LEDs work together as a unified indicator system, reducing the number of separate components needed and simplifying the system structure while providing both mechanical and optical indication of pressure states.
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 system provides reliable and easily understandable pressure state indications, enhancing operator awareness of pressure conditions within enclosed spaces by combining visual and auditory cues, improving the reliability and speed of pressure state detection.
Implementation Method 1
an elastomeric membrane covering the opening of the housing and capable of flexing inwards and outwards during a pressure change of the enclosed space from a neutral air pressure
Implementation Method 2
a light emitting diode array placed within the housing to provide an illumination for a positive pressure with a first color and for a negative pressure with a second color
Data Source
AI summary
A system and method for sensing and indicating air pressure within an enclosed space is described. The system comprises a pressure sensing device and pressure indicator further comprising a housing enabled to house a plurality of electronic devices and having an opening, an elastomeric membrane covering the opening of the housing and capable of flexing inwards and outwards, a light emitting device to provide an illumination and a projector for projecting a positive pressure symbol and a negative pressure symbol. The elastomeric membrane flexes inwards along with a representation of the positive pressure symbol with an illumination of a first color when the pressure within the enclosed space is positive and the elastomeric membrane flexes outwards along with a representation of the negative pressure symbol with the illumination of a second color when the pressure within the enclosed space is negative.