Optical Sensor Panel Detection for Colony Growth vs Foreign Matter
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Solution Overview
Problem
Existing detection devices for culturing biological tissues or microorganisms face accuracy issues due to confusion between the movement of foreign matter and the growth of objects, leading to decreased sensing accuracy.
Innovation Solution
A detection device with a sensor panel and light source, controlled by a circuit that performs acquisition and comparison processes to distinguish between changes caused by foreign matter movement and colony growth, using a filter process to differentiate between differential areas.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If brightness detection is used to monitor culture progression, then culture growth can be detected, but foreign matter movement causes false detection reducing accuracy
Solution Approach 1:
The detection area is divided into multiple regions, and the control circuit performs region-by-region analysis to identify and exclude areas affected by foreign matter movement, thereby maintaining accurate colony growth detection
Solution Approach 2:
The control circuit performs multiple comparison processes (first comparison process for individual sensors, second comparison process for regions) to thoroughly identify and exclude false detection areas, ensuring reliable culture growth measurement
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 device effectively reduces misidentification of foreign matter movement as colony growth, enhancing sensing accuracy by distinguishing between areas caused by foreign matter and colony expansion.
Implementation Method 1
a plurality of optical sensors are two-dimensionally arranged... acquire the outputs of the sensor panel corresponding to an intensity of the light detected by the optical sensors
Data Source
AI summary
A detection device includes: a sensor panel with optical sensors; a light source; a member; and a control circuit. An object to be detected between the sensor panel and the light source is provided with a culture medium. The control circuit repeats an acquisition process to acquire outputs of the optical sensors and performs a comparison process to compare a first output obtained in the first acquisition process with a second output obtained in the latest acquisition process. The comparison process includes: a first comparison process to compare the output for each optical sensor and a second comparison process to compare the output for each area that includes one optical sensor and other optical sensors around the one optical sensor. The control circuit determines the outputs of the optical sensors that satisfy first and second conditions to be the outputs of the optical sensors overlapping the colony.