{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,3,25]],"date-time":"2026-03-25T06:45:48Z","timestamp":1774421148670,"version":"3.50.1"},"reference-count":44,"publisher":"MDPI AG","issue":"18","license":[{"start":{"date-parts":[[2022,9,9]],"date-time":"2022-09-09T00:00:00Z","timestamp":1662681600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100001809","name":"National Natural Science Foundation of China","doi-asserted-by":"publisher","award":["51904143"],"award-info":[{"award-number":["51904143"]}],"id":[{"id":"10.13039\/501100001809","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Sensors"],"abstract":"<jats:p>The air-door is an important device for adjusting the air flow in a mine. It opens and closes within a short time owing to transportation and other factors. Although the switching sensor alone can identify the air-door opening and closing, it cannot relate it to abnormal fluctuations in the wind speed. Large fluctuations in the wind-velocity sensor data during this time can lead to false alarms. To overcome this problem, we propose a method for identifying air-door opening and closing using a single wind-velocity sensor. A multi-scale sliding window (MSSW) is employed to divide the samples. Then, the data global features and fluctuation features are extracted using statistics and the discrete wavelet transform (DWT). In addition, a machine learning model is adopted to classify each sample. Further, the identification results are selected by merging the classification results using the non-maximum suppression method. Finally, considering the safety accidents caused by the air-door opening and closing in an actual production mine, a large number of experiments were carried out to verify the effect of the algorithm using a simulated tunnel model. The results show that the proposed algorithm exhibits superior performance when the gradient boosting decision tree (GBDT) is selected for classification. In the data set composed of air-door opening and closing experimental data, the accuracy, precision, and recall rates of the air-door opening and closing identification are 91.89%, 93.07%, and 91.07%, respectively. In the data set composed of air-door opening and closing and other mine production activity experimental data, the accuracy, precision, and recall rates of the air-door opening and closing identification are 89.61%, 90.31%, and 88.39%, respectively.<\/jats:p>","DOI":"10.3390\/s22186837","type":"journal-article","created":{"date-parts":[[2022,9,13]],"date-time":"2022-09-13T04:05:41Z","timestamp":1663041941000},"page":"6837","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":6,"title":["A Novel Air-Door Opening and Closing Identification Algorithm Using a Single Wind-Velocity Sensor"],"prefix":"10.3390","volume":"22","author":[{"given":"Wentian","family":"Shang","sequence":"first","affiliation":[{"name":"College of Safety Science and Engineering, Liaoning Technical University, Huludao 125105, China"},{"name":"Key Laboratory of Mine Thermo-Motive Disaster & Prevention, Ministry of Education, Huludao 125105, China"}]},{"given":"Lijun","family":"Deng","sequence":"additional","affiliation":[{"name":"College of Safety Science and Engineering, Liaoning Technical University, Huludao 125105, China"},{"name":"Key Laboratory of Mine Thermo-Motive Disaster & Prevention, Ministry of Education, Huludao 125105, China"}]},{"given":"Jian","family":"Liu","sequence":"additional","affiliation":[{"name":"College of Safety Science and Engineering, Liaoning Technical University, Huludao 125105, China"},{"name":"Key Laboratory of Mine Thermo-Motive Disaster & Prevention, Ministry of Education, Huludao 125105, China"}]}],"member":"1968","published-online":{"date-parts":[[2022,9,9]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","unstructured":"Sui, X., Wang, L., and Miao, D. 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