Flexible pressure sensor constructed by polyurethane composite conductive sponge
As the main core component of wearable devices, flexible strain sensors have broad application prospects in health monitoring, motion monitoring, human-machine interface, rehabilitation, entertainment technology and other fields. In this paper, a rectangular sandwich resistive pressure sensor is con...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
IOP Publishing
2024-01-01
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| Series: | Materials Research Express |
| Subjects: | |
| Online Access: | https://doi.org/10.1088/2053-1591/ad2235 |
| _version_ | 1797320481068548096 |
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| author | Liang Dong Chen Li Youjun Zhou Mengxi Zhao Longgang Song Peiying Han Heng Zhang |
| author_facet | Liang Dong Chen Li Youjun Zhou Mengxi Zhao Longgang Song Peiying Han Heng Zhang |
| author_sort | Liang Dong |
| collection | DOAJ |
| description | As the main core component of wearable devices, flexible strain sensors have broad application prospects in health monitoring, motion monitoring, human-machine interface, rehabilitation, entertainment technology and other fields. In this paper, a rectangular sandwich resistive pressure sensor is constructed with porous conductive sponge, and its working mechanism is analyzed. The linearity of the sensor is improved and the stress range is increased by gel modification. Through experimental tests, it can withstand more than 80% compressive strain, and shows a sensitivity of 0.398 kPa ^−1 in the range of 6 ∼ 11 kPa; the maximum range is close to 40 kPa, and the minimum detection limit is 20 Pa; under constant loading/releasing speed, the response/recovery time is about 133/150 ms; it also shows good linearity and stability. With the help of a single sensor entity, Morse code can be sent, and some human activity signals can be measured, such as speech recognition, weighing measurement, limb movement; and 8 sensors create an interesting smart insole for gait recognition. The results show that piezoresistive sensors with porous composite materials have broad application prospects in motion monitoring and human-computer interaction. |
| first_indexed | 2024-03-08T04:39:44Z |
| format | Article |
| id | doaj.art-36b91618ecee4291bbf6a3b35f09f830 |
| institution | Directory Open Access Journal |
| issn | 2053-1591 |
| language | English |
| last_indexed | 2024-03-08T04:39:44Z |
| publishDate | 2024-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | Materials Research Express |
| spelling | doaj.art-36b91618ecee4291bbf6a3b35f09f8302024-02-08T12:29:56ZengIOP PublishingMaterials Research Express2053-15912024-01-0111202630210.1088/2053-1591/ad2235Flexible pressure sensor constructed by polyurethane composite conductive spongeLiang Dong0https://orcid.org/0000-0003-3441-1468Chen Li1https://orcid.org/0000-0001-9442-1014Youjun Zhou2Mengxi Zhao3Longgang Song4Peiying Han5Heng Zhang6College of Mechanical & Electrical Engineering, Shaanxi University of Science & Technology , Xi’an 710021, People’s Republic of ChinaCollege of Mechanical & Electrical Engineering, Shaanxi University of Science & Technology , Xi’an 710021, People’s Republic of China; School of Mechanical Engineering, Xi’an Jiaotong University , Xi’an 710049, People’s Republic of China; State Key Laboratory of Mechanical Manufacturing System Engineering, Xi’an Jiaotong University , Xi’an 710054, People’s Republic of ChinaSchool of Mathematics & Computer Science, Guangxi Science & Technology Normal University , Laibin 546199, People’s Republic of ChinaCollege of Mechanical & Electrical Engineering, Shaanxi University of Science & Technology , Xi’an 710021, People’s Republic of ChinaCollege of Mechanical & Electrical Engineering, Shaanxi University of Science & Technology , Xi’an 710021, People’s Republic of ChinaCollege of Mechanical & Electrical Engineering, Shaanxi University of Science & Technology , Xi’an 710021, People’s Republic of ChinaCollege of Mechanical & Electrical Engineering, Shaanxi University of Science & Technology , Xi’an 710021, People’s Republic of ChinaAs the main core component of wearable devices, flexible strain sensors have broad application prospects in health monitoring, motion monitoring, human-machine interface, rehabilitation, entertainment technology and other fields. In this paper, a rectangular sandwich resistive pressure sensor is constructed with porous conductive sponge, and its working mechanism is analyzed. The linearity of the sensor is improved and the stress range is increased by gel modification. Through experimental tests, it can withstand more than 80% compressive strain, and shows a sensitivity of 0.398 kPa ^−1 in the range of 6 ∼ 11 kPa; the maximum range is close to 40 kPa, and the minimum detection limit is 20 Pa; under constant loading/releasing speed, the response/recovery time is about 133/150 ms; it also shows good linearity and stability. With the help of a single sensor entity, Morse code can be sent, and some human activity signals can be measured, such as speech recognition, weighing measurement, limb movement; and 8 sensors create an interesting smart insole for gait recognition. The results show that piezoresistive sensors with porous composite materials have broad application prospects in motion monitoring and human-computer interaction.https://doi.org/10.1088/2053-1591/ad2235wearable electronicsstrain sensorresistive typeelectronic skin |
| spellingShingle | Liang Dong Chen Li Youjun Zhou Mengxi Zhao Longgang Song Peiying Han Heng Zhang Flexible pressure sensor constructed by polyurethane composite conductive sponge Materials Research Express wearable electronics strain sensor resistive type electronic skin |
| title | Flexible pressure sensor constructed by polyurethane composite conductive sponge |
| title_full | Flexible pressure sensor constructed by polyurethane composite conductive sponge |
| title_fullStr | Flexible pressure sensor constructed by polyurethane composite conductive sponge |
| title_full_unstemmed | Flexible pressure sensor constructed by polyurethane composite conductive sponge |
| title_short | Flexible pressure sensor constructed by polyurethane composite conductive sponge |
| title_sort | flexible pressure sensor constructed by polyurethane composite conductive sponge |
| topic | wearable electronics strain sensor resistive type electronic skin |
| url | https://doi.org/10.1088/2053-1591/ad2235 |
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