Air Filter Clog Detector Using Color Light Sensor
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Solution Overview
Problem
Current air filter clog measurement technologies are bulky, expensive, and lack intuitive functionality, failing to accurately mimic human determination of filter clog levels.
Innovation Solution
A grayscale or color light sensor system with a light source, detector, and microprocessor circuitry that determines clog levels by comparing the color of reflected light from the air filter, allowing for wireless notifications and remote processing to assess and replace filters.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional clog detection methods (vane anemometers, pressure differential sensors, light-based systems) are used, then measurement capability is achieved, but device size becomes bulky and cost increases
Solution Approach 1:
The patent extracts only the essential color detection function from complex light-based systems, using a simple grayscale or color light sensor to detect filter clog levels through color changes, eliminating unnecessary components while maintaining measurement capability
Solution Approach 2:
The patent employs inexpensive light sensors and LEDs that can be easily replaced, using cost-effective components rather than expensive precision instruments, making the system both affordable and simple to maintain
2Measurement precision
If traditional detection systems are implemented, then technical measurement is possible, but the system fails to mimic human visual inspection intuitively
Solution Approach 1:
The patent copies the human visual inspection method by using a light sensor to detect color changes on the filter surface, mimicking how humans visually assess filter clog levels through color variations, thereby making the system intuitive and familiar
Solution Approach 2:
The patent directly utilizes color changes on the filter surface as the detection mechanism, measuring the reflected light color to determine clog levels, which aligns with human visual perception and provides intuitive operation
3Ease of operation
If the light detector is positioned on the upstream side of the air filter, then detection is possible, but the detector becomes dirty and measurement accuracy deteriorates
Solution Approach 1:
The patent inverts the conventional detector positioning by placing the light sensor on the downstream side of the filter rather than upstream, allowing detection without direct exposure to incoming dirty air, thus preventing contamination while maintaining measurement capability
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
Provides a cost-effective, intuitive method for determining air filter clog levels, enabling timely replacements and integrating with smart home systems for automated notifications and filter ordering.
Implementation Method 1
The light source is configured to emit light toward an air filter. The light detector is configured to measure a color of light reflected by the air filter.
Data Source
AI summary
An air filter clog detector that provides a simpler and reliable method of determining clogging level of air filters using a grayscale or color light sensor. An example air filter clog detector includes a light source (e.g., light emitting diode (LED)), light detector, and circuitry (e.g., micro-processor controller). The light source is configured to emit light toward an air filter. The light detector is configured to measure a color of light reflected by the air filter. The circuitry is configured to determine whether the air filter is clogged based on the color of light reflected by the air filter. To prevent the air filter clog detector from becoming dirty, the detector can be positioned on the downstream side of the air filter.