Air conditioning appliance using an asymmetric sensor pair for transient temperature measurment
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Solution Overview
Problem
Air conditioner units face challenges with inaccurate sensor readings due to differences in mounting locations and component interactions, leading to discontinuities and unexpected behaviors.
Innovation Solution
Utilizing a primary and secondary sensor group with a controller to determine an adjusted temperature by gradually transitioning from secondary to primary sensor readings, ensuring consistent operation through weighted averaging.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If multiple sensors are used to measure temperature in different locations, then measurement coverage is improved, but reading discontinuities and inaccuracies occur due to different mounting locations and component interactions
Solution Approach 1:
The patent introduces an intermediary computational process that mediates between multiple sensor readings. The controller calculates a blended temperature value by combining readings from primary and secondary sensors, thereby eliminating direct discontinuities and providing a consistent temperature measurement that reflects the overall system state rather than localized variations.
Solution Approach 2:
The system dynamically changes the weighting parameters of different sensor readings based on operational conditions. During transient events like fan startup, the system adjusts the contribution of each sensor to the final temperature calculation, allowing optimal use of available data while maintaining measurement consistency throughout operation.
2Measurement precision
If the system switches between different sensor groups during operation, then accurate temperature measurement is maintained, but discontinuities and unexpected behaviors occur
Solution Approach 1:
The patent ensures continuous and smooth temperature measurement by blending readings from multiple sensors rather than switching between them. The computational approach maintains uninterrupted temperature data flow, eliminating gaps and discontinuities that would occur with direct sensor switching, thereby ensuring stable and predictable system operation.
Solution Approach 2:
The system prepares for potential sensor issues by having multiple sensors ready and using computational blending to cushion against individual sensor inaccuracies or failures. This proactive approach ensures that no single sensor problem can cause system instability or unexpected behavior.
Data Source
AI summary
A method for directing AC unit functions based on sensor readings in an AC unit is provided. The method includes obtaining a primary temperature from a primary sensor group. The primary sensor group includes one or more primary sensors. The method includes directing the AC unit based on the primary sensor group. The method further includes obtaining a secondary temperature from a secondary sensor group. The secondary sensor group includes one or more secondary sensors. The method includes directing the AC unit based on the secondary temperature. The method also includes detecting an adjustment event that corresponds to a fan speed adjustment. The method further includes determining an adjusted temperature between the primary temperature and the secondary temperature. The method also includes directing the AC unit based on the adjusted temperature.