Design of effective value calculation model for dynamic dataflow of infrared gas online monitoring

The development of "CC30A CH4-CO2 combined analyzer" with infrared gas sensor as the core detection device can be widely used in online gas component analysis. In data analysis, the maximum value and arithmetic mean of the sensor data for each test period are not effective value. The chara...

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Bibliographic Details
Published in:PloS one 2021-10, Vol.16 (10), p.e0259155-e0259155
Main Authors: Xiao, Dong, Huang, Lu, Keita, Mohamed, He, Hailun, Chen, Dayong, Li, Jin
Format: Article
Language:English
Subjects:
Accuracy
Algorithms
Arithmetic
Biology and Life Sciences
Carbon dioxide
Carbon Dioxide - analysis
Carbon Dioxide - chemistry
Chromatography
Chromatography, Gas - methods
Coal mining
Composition
Data Analysis
Data collection
Data processing
Datasets
Engineering and Technology
Environmental restoration
Evaluation
Experiments
Gas sensors
Gases
Gases - chemistry
Information management
Infrared analysis
Infrared detectors
Infrared Rays
Laboratories
Mathematics
Methane - analysis
Methane - chemistry
Methods
Mines
Modelling
Monitoring
Physical Sciences
Research and Analysis Methods
Response time
Segmentation
Sensors
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Summary:The development of "CC30A CH4-CO2 combined analyzer" with infrared gas sensor as the core detection device can be widely used in online gas component analysis. In data analysis, the maximum value and arithmetic mean of the sensor data for each test period are not effective value. The characteristics of the dynamic data are: (1) Each DAW completes one test for one parameter, there is a unique effective value; (2) In test state, the fluctuation of the sensor value gradually decreases when approaching to the end of the test. An effective value calculation model was designed using the method of dimensionality reduction of dynamic data. The model was based on the distribution characteristics of the process data, and consists of 4 key steps: (1) Identify the Data Analysis Window (DAW) and build DAW dataset; (2) Calculate the value of optimal DAW dataset segmentation and build DAW subdataset; (3) Calculate the arithmetic mean (Mc) and count the amount of data in each subdataset (Fc), and build the optimal segmentation statistical set; (4) Effective value calculation and error evaluation. Calculation result with 50 sets of monitor data conformed that the EVC model for dynamic data of gas online monitoring meets the requirements of experimental accuracy requirements and test error. This method can be independently calculated without relying on the feedback information of the monitoring device, and it has positive significance for using the algorithm to reduce the hardware design complexity.
ISSN:1932-6203
1932-6203
DOI:10.1371/journal.pone.0259155