Machine Embroidered Sensors for Limb Joint Movement-Monitoring Smart Clothing
In this study, a strain gauge sensor based on a change of contact or network structure between conductive materials was implemented using the handle-machine embroidery technique, and the variables (embroidery shape, embroidery distance, embroidery size, and implementation location) affecting its per...
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| Format: | Article |
| Language: | English |
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MDPI AG
2021-02-01
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| Series: | Sensors |
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| Online Access: | https://www.mdpi.com/1424-8220/21/3/949 |
| _version_ | 1797417209328304128 |
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| author | Su Youn Park Joo-Hyeon Lee |
| author_facet | Su Youn Park Joo-Hyeon Lee |
| author_sort | Su Youn Park |
| collection | DOAJ |
| description | In this study, a strain gauge sensor based on a change of contact or network structure between conductive materials was implemented using the handle-machine embroidery technique, and the variables (embroidery shape, embroidery distance, embroidery size, and implementation location) affecting its performance were studied. As a result of Experiment I on the structure of embroidery suitable for joint motion monitoring, the embroidery distance, rather than the embroidery size, was found to have a significant effect on the electric resistance changes caused by elongation. Based on the results of Experiment I, two types of zigzag embroideries, four types of embroideries with few contact points, and two types of embroideries with more contact points (all with short distances (2.0)) were selected for Experiment II (the dummy motion experiment). As a result of the dummy motion experiment, it was found that the locations of the suitable embroidered sensors for joint motion monitoring was the HJP (Hinge Joint Position) in the ‘types without a contact point’ (zigzag) and the LHJP (Lower Hinge Joint Position) in the ‘types with more contact points’. On the other hand, although there was no consistency among the ‘types with few contact points’, the resistance changes measured by the 2CP and 7CP embroidered sensors showed similar figures and patterns, and the HJP location was most suitable. The resistance changes measured by the 4CP and 6CP embroidered sensors exhibited no consistent patterns, but the LHJP locations were more suitable. These results indicate that the location of the HJP is suitable for measuring joint motion in the ‘type without a contact point’, and the location of the LHJP is suitable for measuring joint motion when the number of contact points exceeds a certain limit. Among them, the average resistance change of the 9CP sensor located at the LHJP was 40 Ω with the smallest standard deviation of less than 1, and it is thus considered to have the best performance among all the sensors. |
| first_indexed | 2024-03-09T06:15:29Z |
| format | Article |
| id | doaj.art-45442f74f2b54c4ab5c9c6f147de7a73 |
| institution | Directory Open Access Journal |
| issn | 1424-8220 |
| language | English |
| last_indexed | 2024-03-09T06:15:29Z |
| publishDate | 2021-02-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Sensors |
| spelling | doaj.art-45442f74f2b54c4ab5c9c6f147de7a732023-12-03T11:53:10ZengMDPI AGSensors1424-82202021-02-0121394910.3390/s21030949Machine Embroidered Sensors for Limb Joint Movement-Monitoring Smart ClothingSu Youn Park0Joo-Hyeon Lee1Department of Clothing &Textiles, Yonsei University, Seoul 03722, KoreaDepartment of Clothing &Textiles, Yonsei University, Seoul 03722, KoreaIn this study, a strain gauge sensor based on a change of contact or network structure between conductive materials was implemented using the handle-machine embroidery technique, and the variables (embroidery shape, embroidery distance, embroidery size, and implementation location) affecting its performance were studied. As a result of Experiment I on the structure of embroidery suitable for joint motion monitoring, the embroidery distance, rather than the embroidery size, was found to have a significant effect on the electric resistance changes caused by elongation. Based on the results of Experiment I, two types of zigzag embroideries, four types of embroideries with few contact points, and two types of embroideries with more contact points (all with short distances (2.0)) were selected for Experiment II (the dummy motion experiment). As a result of the dummy motion experiment, it was found that the locations of the suitable embroidered sensors for joint motion monitoring was the HJP (Hinge Joint Position) in the ‘types without a contact point’ (zigzag) and the LHJP (Lower Hinge Joint Position) in the ‘types with more contact points’. On the other hand, although there was no consistency among the ‘types with few contact points’, the resistance changes measured by the 2CP and 7CP embroidered sensors showed similar figures and patterns, and the HJP location was most suitable. The resistance changes measured by the 4CP and 6CP embroidered sensors exhibited no consistent patterns, but the LHJP locations were more suitable. These results indicate that the location of the HJP is suitable for measuring joint motion in the ‘type without a contact point’, and the location of the LHJP is suitable for measuring joint motion when the number of contact points exceeds a certain limit. Among them, the average resistance change of the 9CP sensor located at the LHJP was 40 Ω with the smallest standard deviation of less than 1, and it is thus considered to have the best performance among all the sensors.https://www.mdpi.com/1424-8220/21/3/949machine embroidered sensorfabric strain gaugemetal-fiber hybrid conductive yarnlimb joint motion monitoringgarment integrated sensing |
| spellingShingle | Su Youn Park Joo-Hyeon Lee Machine Embroidered Sensors for Limb Joint Movement-Monitoring Smart Clothing Sensors machine embroidered sensor fabric strain gauge metal-fiber hybrid conductive yarn limb joint motion monitoring garment integrated sensing |
| title | Machine Embroidered Sensors for Limb Joint Movement-Monitoring Smart Clothing |
| title_full | Machine Embroidered Sensors for Limb Joint Movement-Monitoring Smart Clothing |
| title_fullStr | Machine Embroidered Sensors for Limb Joint Movement-Monitoring Smart Clothing |
| title_full_unstemmed | Machine Embroidered Sensors for Limb Joint Movement-Monitoring Smart Clothing |
| title_short | Machine Embroidered Sensors for Limb Joint Movement-Monitoring Smart Clothing |
| title_sort | machine embroidered sensors for limb joint movement monitoring smart clothing |
| topic | machine embroidered sensor fabric strain gauge metal-fiber hybrid conductive yarn limb joint motion monitoring garment integrated sensing |
| url | https://www.mdpi.com/1424-8220/21/3/949 |
| work_keys_str_mv | AT suyounpark machineembroideredsensorsforlimbjointmovementmonitoringsmartclothing AT joohyeonlee machineembroideredsensorsforlimbjointmovementmonitoringsmartclothing |