Effect of Equipment on the Accuracy of Accelerometer-Based Human Activity Recognition in Extreme Environments
A little explored area of human activity recognition (HAR) is in people operating in relation to extreme environments, e.g., mountaineers. In these contexts, the ability to accurately identify activities, alongside other data streams, has the potential to prevent death and serious negative health ev...
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| Format: | Article |
| Language: | English |
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MDPI AG
2023-01-01
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| Series: | Sensors |
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| Online Access: | https://www.mdpi.com/1424-8220/23/3/1416 |
| _version_ | 1797623199906660352 |
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| author | Stephen Ward Sijung Hu Massimiliano Zecca |
| author_facet | Stephen Ward Sijung Hu Massimiliano Zecca |
| author_sort | Stephen Ward |
| collection | DOAJ |
| description | A little explored area of human activity recognition (HAR) is in people operating in relation to extreme environments, e.g., mountaineers. In these contexts, the ability to accurately identify activities, alongside other data streams, has the potential to prevent death and serious negative health events to the operators. This study aimed to address this user group and investigate factors associated with the placement, number, and combination of accelerometer sensors. Eight participants (age = 25.0 ± 7 years) wore 17 accelerometers simultaneously during lab-based simulated mountaineering activities, under a range of equipment and loading conditions. Initially, a selection of machine learning techniques was tested. Secondly, a comprehensive analysis of all possible combinations of the 17 accelerometers was performed to identify the optimum number of sensors, and their respective body locations. Finally, the impact of activity-specific equipment on the classifier accuracy was explored. The results demonstrated that the support vector machine (SVM) provided the most accurate classifications of the five machine learning algorithms tested. It was found that two sensors provided the optimum balance between complexity, performance, and user compliance. Sensors located on the hip and right tibia produced the most accurate classification of the simulated activities (96.29%). A significant effect associated with the use of mountaineering boots and a 12 kg rucksack was established. |
| first_indexed | 2024-03-11T09:25:22Z |
| format | Article |
| id | doaj.art-8466bdd38141471e84ab73af66d928d0 |
| institution | Directory Open Access Journal |
| issn | 1424-8220 |
| language | English |
| last_indexed | 2024-03-11T09:25:22Z |
| publishDate | 2023-01-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Sensors |
| spelling | doaj.art-8466bdd38141471e84ab73af66d928d02023-11-16T18:00:46ZengMDPI AGSensors1424-82202023-01-01233141610.3390/s23031416Effect of Equipment on the Accuracy of Accelerometer-Based Human Activity Recognition in Extreme EnvironmentsStephen Ward0Sijung Hu1Massimiliano Zecca2Wolfson School of Mechanical, Electrical and Manufacturing Engineering, Loughborough University, Loughborough LE11 3TU, UKWolfson School of Mechanical, Electrical and Manufacturing Engineering, Loughborough University, Loughborough LE11 3TU, UKWolfson School of Mechanical, Electrical and Manufacturing Engineering, Loughborough University, Loughborough LE11 3TU, UKA little explored area of human activity recognition (HAR) is in people operating in relation to extreme environments, e.g., mountaineers. In these contexts, the ability to accurately identify activities, alongside other data streams, has the potential to prevent death and serious negative health events to the operators. This study aimed to address this user group and investigate factors associated with the placement, number, and combination of accelerometer sensors. Eight participants (age = 25.0 ± 7 years) wore 17 accelerometers simultaneously during lab-based simulated mountaineering activities, under a range of equipment and loading conditions. Initially, a selection of machine learning techniques was tested. Secondly, a comprehensive analysis of all possible combinations of the 17 accelerometers was performed to identify the optimum number of sensors, and their respective body locations. Finally, the impact of activity-specific equipment on the classifier accuracy was explored. The results demonstrated that the support vector machine (SVM) provided the most accurate classifications of the five machine learning algorithms tested. It was found that two sensors provided the optimum balance between complexity, performance, and user compliance. Sensors located on the hip and right tibia produced the most accurate classification of the simulated activities (96.29%). A significant effect associated with the use of mountaineering boots and a 12 kg rucksack was established.https://www.mdpi.com/1424-8220/23/3/1416accelerometerinertial measurement unithuman activity recognitionwearablesmachine learningextreme environments |
| spellingShingle | Stephen Ward Sijung Hu Massimiliano Zecca Effect of Equipment on the Accuracy of Accelerometer-Based Human Activity Recognition in Extreme Environments Sensors accelerometer inertial measurement unit human activity recognition wearables machine learning extreme environments |
| title | Effect of Equipment on the Accuracy of Accelerometer-Based Human Activity Recognition in Extreme Environments |
| title_full | Effect of Equipment on the Accuracy of Accelerometer-Based Human Activity Recognition in Extreme Environments |
| title_fullStr | Effect of Equipment on the Accuracy of Accelerometer-Based Human Activity Recognition in Extreme Environments |
| title_full_unstemmed | Effect of Equipment on the Accuracy of Accelerometer-Based Human Activity Recognition in Extreme Environments |
| title_short | Effect of Equipment on the Accuracy of Accelerometer-Based Human Activity Recognition in Extreme Environments |
| title_sort | effect of equipment on the accuracy of accelerometer based human activity recognition in extreme environments |
| topic | accelerometer inertial measurement unit human activity recognition wearables machine learning extreme environments |
| url | https://www.mdpi.com/1424-8220/23/3/1416 |
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