Odor Sensor Correction for Temperature and Humidity Differences
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Solution Overview
Problem
Chemical sensor devices are susceptible to variations in temperature and humidity, leading to inaccuracies in odor measurement results.
Innovation Solution
An odor detection device that measures and corrects information on the environment, specifically the amount of water vapor, to adjust odor detection results based on environmental differences.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If chemical sensor device is used for odor detection, then odor identification capability is achieved, but measurement accuracy varies due to temperature and humidity differences between sensor environment and odor source
Solution Approach 1:
The patent introduces environmental information (temperature and humidity data) as an intermediary element that mediates between the sensor measurements and the actual odor concentration. By measuring environmental parameters and using them to correct odor readings, the system compensates for the harmful effects of environmental variations without requiring physical isolation or complex sensor design changes.
2Measurement precision
If environmental correction is applied to odor detection, then measurement accuracy is improved, but device complexity increases due to additional measurement and correction mechanisms
Solution Approach 1:
The environmental information measurement means serves multiple functions: it characterizes the sensor operating environment, provides correction data for odor measurements, and enables adaptation to different measurement conditions. This multi-functionality reduces the need for separate dedicated components for each function, thereby limiting the increase in device 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
The device enhances the accuracy of odor detection by accounting for variations in temperature and humidity, ensuring precise identification of odors.
Implementation Method 1
a chemical sensor device to identify a substance on the basis of a variation in the resonance frequency of a vibrator, occurring in the case of adsorption or desorption of the substance
Data Source
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AI summary
An odor detection device (1) includes an odor sensor (10), environmental information measurement means (11, 12), odor information collection means (20), difference information acquisition means (21), and correction means (22). The odor sensor (10) detects information on an odor emitted from an odor source (2). The environmental information measurement means (11, 12) measures information on an environment, correlated with the amount of water vapor contained in surrounding gas. The difference information acquisition means (21) acquires the difference amount of water vapor, indicating a difference between information on an environment surrounding the odor sensor (10) and information on an environment surrounding the odor source (2). The correction means (22) corrects information on an odor, collected by the odor information collection means (20), on the basis of difference information acquired by the difference information acquisition means (21).