Air Bed Leak Detection via Environmental Pressure Compensation
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Solution Overview
Problem
Users of air beds with separate air chambers often struggle to determine if pressure changes are due to leaks or ambient temperature and barometric pressure fluctuations, leading to unnecessary customer service inquiries and misdiagnosis of leaks.
Innovation Solution
A system and method for detecting air leaks in air beds that involves adjusting air chambers to a predetermined pressure, sensing pressure values at different intervals, calculating pressure changes, and displaying a leak detection indicator, while accounting for expected changes due to temperature and barometric pressure fluctuations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If pressure monitoring is performed to detect leaks, then leak detection capability is improved, but false positives occur due to ambient temperature and barometric pressure changes
Solution Approach 1:
The system segments the pressure change analysis by separating expected environmental pressure changes from actual leak-induced pressure changes. By monitoring ambient temperature and barometric pressure separately and calculating their expected impact on chamber pressure, the system isolates the true leak signal from environmental noise, thereby improving both reliability and measurement precision.
Solution Approach 2:
The system implements feedback by continuously monitoring ambient temperature and barometric pressure, using this information to dynamically adjust the expected pressure baseline for the air chamber. This feedback loop allows the system to compensate for environmental changes in real-time, improving leak detection accuracy by distinguishing between expected and unexpected pressure variations.
2Device complexity
If simple pressure monitoring is used, then device complexity is reduced, but inability to distinguish environmental pressure changes from leaks increases false diagnoses
Solution Approach 1:
The monitoring system is designed with multi-functionality, using a single integrated system to perform both environmental parameter monitoring (temperature and barometric pressure) and chamber pressure monitoring. This universal approach allows the system to gather all necessary data for accurate leak detection without requiring separate dedicated systems, thereby maintaining relatively low complexity while achieving high reliability.
Solution Approach 2:
The system performs preliminary action by pre-calculating and storing the relationship between environmental changes and expected chamber pressure changes. By establishing this baseline relationship in advance, the system can quickly compare actual pressure changes against expected changes during operation, improving reliability without significantly increasing operational complexity.
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 differentiates between pressure changes caused by leaks and those caused by environmental factors, reducing false positives and providing users with reliable leak detection, thereby improving customer service efficiency and user satisfaction.
Implementation Method 1
a pressure sensing means adapted to monitor pressure within the one or more air chambers
Data Source
AI summary
A leak detection method for an air bed having an air chamber comprises adjusting the air chamber to a predetermined pressure level, sensing a first pressure value of the air chamber after a first time interval, sensing a second pressure value of the air chamber after a second time interval, determining a pressure change in the air chamber, detecting whether the air chamber is leaking by comparing the pressure change with a second pressure value, and displaying a leak detection indicator. In one embodiment, the second pressure value is a pressure change in a second air chamber. In another embodiment, the second pressure value is an expected pressure change of the air chamber that is calculated based upon changes in ambient temperature and barometric pressure.