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Ammonia and ethanol detection via an electronic nose utilizing a bionic chamber and a sparrow search
Yeping Shi1,2, Yunbo Shi1,3,4, Haodong Niu1,3,4
1The Higher Educational Key Laboratory for Measuring & Control Technology and Instrumentation of Heilongjiang Province, Harbin University of Science and Technology, Harbin, China.
Plos One
|December 3, 2024
Summary
A novel electronic nose with a bionic chamber accurately detects ammonia in animal facilities. This system, using a sparrow search algorithm-optimized backpropagation neural network (SSA-BPNN), offers precise and rapid gas sensing.
Area of Science:
- Agricultural Engineering
- Environmental Monitoring
- Sensor Technology
Background:
- Ammonia is a significant stressor and detrimental gas in animal enclosures, necessitating precise detection methods.
- Existing methods for ammonia detection may lack the required speed, affordability, or precision for livestock and poultry facilities.
Purpose of the Study:
- To design and develop an electronic nose system incorporating a bionic chamber for enhanced gas sensing.
- To evaluate the performance of the developed system for precise and rapid detection of ammonia concentrations.
Main Methods:
- Development of an electronic nose with a bionic chamber mimicking mammalian nasal structures, with sensor placement guided by fluid simulations.
- Collection of response data for ammonia and ethanol gases using the electronic nose system.
- Classification and regression of sensor data using a sparrow search algorithm (SSA)-optimized backpropagation neural network (BPNN).
Main Results:
- The SSA-BPNN model achieved 99.1% classification accuracy, outperforming Support Vector Machine (SVM) and Random Forest (RF) models.
- The system demonstrated high accuracy in regression prediction, with a coefficient of determination (R2) greater than 0.99.
- The bionic chamber influenced sensor response and recovery times, with the ammonia sensor showing a faster recovery time.
Conclusions:
- The proposed electronic nose system, integrated with the SSA-BPNN, provides a promising and accurate solution for ammonia detection in agricultural settings.
- The bionic chamber design enhances the system's capability for precise and rapid gas sensing in challenging environments.
