Comparative Study of Drift Compensation Methods for Environmental Gas Sensors

3rd International Conference on Research Methodology for Built Environment and Engineering 2017

生态环境科学

Abidin, M.Z.^1 ; Asmat, Arnis^1,2 ; Hamidon, M.N.^3

Faculty of Applied Sciences, Universiti Teknologi MARA, Selangor, Shah Alam

40450, Malaysia^1

Climate Change and Carbon Footprint Research Group, Universiti Teknologi MARA, Selangor, Shah Alam

40450, Malaysia^2

Institute of Advanced Technology, Universiti Putra Malaysia, Serdang, Selangor

43400, Malaysia^3

关键词: Comparative studies;    Drift compensation;    Drift reduction;    Parameter variable;    Sensor drift;    Temperature variables;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/117/1/012031/pdf
DOI  :  10.1088/1755-1315/117/1/012031

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

Most drift compensation attempts in environmental gas sensors are only emphasize on the "already-known" drift-causing parameter (i.e., ambient temperature, relative humidity) in compensating the sensor drift. Less consideration is taken to another parameter (i.e., baseline responses) that might have affected indirectly with the promotion of drift-causing parameter variable (in this context, is ambient temperature variable). In this study, the "indirect" drift-causing parameter (drifted baseline responses) has been taken into consideration in compensating the sensor drift caused by ambient temperature variable, by means of a proposed drift compensation method (named as RT-method). The effectiveness of this method in its efficacy of compensating drift was analysed and compared with the common method that used the "already-known" drift-causing parameter (named as T-method), using drift reduction percentage. From the results analysis, the RT-method has outperformed T- method in the drift reduction percentage, with its ability to reduce drift up to 64% rather than the T-method which only able to reduce up to 45% for TGS2600 sensor. It has proven that the inclusion of drifted baseline responses into drift compensation attempt would resulted to an improved drift compensation efficiency.