Odor Detection Sensor Correction Using Water Vapor Differences
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Solution Overview
Problem
Chemical sensor devices experience variations in measurement accuracy due to differences in temperature and humidity between the surrounding environment and the object being measured.
Innovation Solution
An odor detection device that includes an odor sensor, environmental information measurement means, odor information collection means, difference information acquisition means, and correction means to correct odor information based on environmental differences, specifically using water vapor content as a reference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the chemical sensor device is used to detect odor substances, then the detection function is achieved, but the measurement accuracy varies due to temperature and humidity differences between the surrounding environment and the object being measured
Solution Approach 1:
The patent implements feedback by measuring environmental parameters (temperature, humidity) at both the sensor location and the odor source location, calculating the difference between these environments, and using this difference information to correct the odor detection results. This closed-loop feedback mechanism compensates for environmental variations and maintains measurement consistency across different conditions
Solution Approach 2:
The patent changes the measurement parameters by introducing environmental parameter measurements (temperature, humidity) in addition to odor detection. By measuring and comparing environmental parameters at different locations, the system adjusts the odor detection results based on these parameter differences, thereby compensating for environmental effects and improving measurement reliability
2Measurement precision
If environmental information measurement means is added to measure water vapor content, then measurement accuracy is improved, but device complexity increases
Solution Approach 1:
The patent applies multi-functionality by using the same environmental information measurement means to measure multiple environmental parameters (temperature, humidity/water vapor) at both the sensor location and the odor source location. This single measurement device performs multiple functions, avoiding the need for separate sensors for each parameter and reducing overall system complexity
Solution Approach 2:
The patent introduces environmental parameters (temperature, humidity) as intermediary variables that mediate between the physical environment and the odor detection process. These intermediary measurements provide information about environmental conditions that affect odor detection, allowing the system to compensate for environmental variations without directly modifying the odor sensing mechanism
Data Source
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).