Context-aware IoT-enabled framework to analyse and predict indoor air quality
For a productive and healthy life, air quality plays an important role. This paper addresses the requirements to develop a system capable of providing real-time information, predictions, and alerts about the indoor environment using context-awareness. The proposed IoT system serves for data collecti...
| Main Authors: | , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2022-11-01
|
| Series: | Intelligent Systems with Applications |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2667305322000692 |
| _version_ | 1811341511649918976 |
|---|---|
| author | Krati Rastogi Divya Lohani |
| author_facet | Krati Rastogi Divya Lohani |
| author_sort | Krati Rastogi |
| collection | DOAJ |
| description | For a productive and healthy life, air quality plays an important role. This paper addresses the requirements to develop a system capable of providing real-time information, predictions, and alerts about the indoor environment using context-awareness. The proposed IoT system serves for data collection, pre-processing, defining rules, and forecasting the predicting states of the indoor environment by giving information to the end-user about the alerts and recommendations. A novel approach based on the indoor pollutants T, RH, CO2, PM 2.5, PM 10, and CO for the determination of the status of the environment is proposed. The pre-processing is used for filtering data using and extended Kalman filter. Further, the system uses an adaptive neuro-fuzzy inference system (ANFIS) and discrete-time Markov chains (DTMC) to predict the state of the indoor environment with the help of daily air pollution concentrations and environmental parameters. The ANFIS model predictor considers the value of indoor pollutants to form a new index: State of indoor air (SIA). For analysis and forecasting of the new index SIA, the DTMC model is used. The collected and measured data is stored in the IoT cloud using the sensing setup, and sensed information is used to develop the SIA transfer matrix, generating return durations corresponding to each SIA and providing alerts based on the data to the end-user. The models are assessed using the expected and actual return durations. The most frequent interior ventilation states, according to the predictions, are poor and moderate. Only 0.08 percent of the time does the IAQ remain in a good state. Two-thirds of the time (66%), the indoor ventilation is severe (poor, very poor, or hazardous); 19% of the time it is very bad, and 15% of the time it is hazardous, suggesting and warning that there is a very high probability of unhealthy AQI in educational institutions in the Delhi-NCR region. Performance is measured by the comparison between actual and forecasted return periods, and the forecast error for our system is low, with an absolute forecast error of 3.47% on an average. |
| first_indexed | 2024-04-13T18:56:15Z |
| format | Article |
| id | doaj.art-3c667d808a9a4d9a8972a39ae89040f7 |
| institution | Directory Open Access Journal |
| issn | 2667-3053 |
| language | English |
| last_indexed | 2024-04-13T18:56:15Z |
| publishDate | 2022-11-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Intelligent Systems with Applications |
| spelling | doaj.art-3c667d808a9a4d9a8972a39ae89040f72022-12-22T02:34:14ZengElsevierIntelligent Systems with Applications2667-30532022-11-0116200132Context-aware IoT-enabled framework to analyse and predict indoor air qualityKrati Rastogi0Divya Lohani1Department of Computer Science and Engineering, Shiv Nadar University, Delhi NCR, IndiaCorresponding author.; Department of Computer Science and Engineering, Shiv Nadar University, Delhi NCR, IndiaFor a productive and healthy life, air quality plays an important role. This paper addresses the requirements to develop a system capable of providing real-time information, predictions, and alerts about the indoor environment using context-awareness. The proposed IoT system serves for data collection, pre-processing, defining rules, and forecasting the predicting states of the indoor environment by giving information to the end-user about the alerts and recommendations. A novel approach based on the indoor pollutants T, RH, CO2, PM 2.5, PM 10, and CO for the determination of the status of the environment is proposed. The pre-processing is used for filtering data using and extended Kalman filter. Further, the system uses an adaptive neuro-fuzzy inference system (ANFIS) and discrete-time Markov chains (DTMC) to predict the state of the indoor environment with the help of daily air pollution concentrations and environmental parameters. The ANFIS model predictor considers the value of indoor pollutants to form a new index: State of indoor air (SIA). For analysis and forecasting of the new index SIA, the DTMC model is used. The collected and measured data is stored in the IoT cloud using the sensing setup, and sensed information is used to develop the SIA transfer matrix, generating return durations corresponding to each SIA and providing alerts based on the data to the end-user. The models are assessed using the expected and actual return durations. The most frequent interior ventilation states, according to the predictions, are poor and moderate. Only 0.08 percent of the time does the IAQ remain in a good state. Two-thirds of the time (66%), the indoor ventilation is severe (poor, very poor, or hazardous); 19% of the time it is very bad, and 15% of the time it is hazardous, suggesting and warning that there is a very high probability of unhealthy AQI in educational institutions in the Delhi-NCR region. Performance is measured by the comparison between actual and forecasted return periods, and the forecast error for our system is low, with an absolute forecast error of 3.47% on an average.http://www.sciencedirect.com/science/article/pii/S2667305322000692Context awareIndoor air qualityInternet of thingsExtended Kalman filterDiscrete-time Markov chainsState of indoor air |
| spellingShingle | Krati Rastogi Divya Lohani Context-aware IoT-enabled framework to analyse and predict indoor air quality Intelligent Systems with Applications Context aware Indoor air quality Internet of things Extended Kalman filter Discrete-time Markov chains State of indoor air |
| title | Context-aware IoT-enabled framework to analyse and predict indoor air quality |
| title_full | Context-aware IoT-enabled framework to analyse and predict indoor air quality |
| title_fullStr | Context-aware IoT-enabled framework to analyse and predict indoor air quality |
| title_full_unstemmed | Context-aware IoT-enabled framework to analyse and predict indoor air quality |
| title_short | Context-aware IoT-enabled framework to analyse and predict indoor air quality |
| title_sort | context aware iot enabled framework to analyse and predict indoor air quality |
| topic | Context aware Indoor air quality Internet of things Extended Kalman filter Discrete-time Markov chains State of indoor air |
| url | http://www.sciencedirect.com/science/article/pii/S2667305322000692 |
| work_keys_str_mv | AT kratirastogi contextawareiotenabledframeworktoanalyseandpredictindoorairquality AT divyalohani contextawareiotenabledframeworktoanalyseandpredictindoorairquality |