Contact Pressure Level Indication Using Stepped Output Tactile Sensors
In this article, we report on a novel diaphragm-type tactile pressure sensor that produces stepwise output currents depending on varying low contact pressures. When contact pressures are applied to the stepped output tactile sensor (SOTS), the sensor’s suspended diaphragm makes contact with the subs...
| Main Authors: | , , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2016-04-01
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| Series: | Sensors |
| Subjects: | |
| Online Access: | http://www.mdpi.com/1424-8220/16/4/511 |
| _version_ | 1811297898721181696 |
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| author | Eunsuk Choi Onejae Sul Juyoung Kim Kyumin Kim Jong-Seok Kim Dae-Yong Kwon Byong-Deok Choi Seung-Beck Lee |
| author_facet | Eunsuk Choi Onejae Sul Juyoung Kim Kyumin Kim Jong-Seok Kim Dae-Yong Kwon Byong-Deok Choi Seung-Beck Lee |
| author_sort | Eunsuk Choi |
| collection | DOAJ |
| description | In this article, we report on a novel diaphragm-type tactile pressure sensor that produces stepwise output currents depending on varying low contact pressures. When contact pressures are applied to the stepped output tactile sensor (SOTS), the sensor’s suspended diaphragm makes contact with the substrate, which completes a circuit by connecting resistive current paths. Then the contact area, and therefore the number of current paths, would determine the stepped output current produced. This mechanism allows SOTS to have high signal-to-noise ratio (>20 dB) in the 3–500 Hz frequency range at contact pressures below 15 kPa. Moreover, since the sensor’s operation does not depend on a material’s pressure-dependent electrical properties, the SOTS is able to demonstrate high reproducibility and reliability. By forming a 4 × 4 array of SOTS with a surface bump structure, we demonstrated shear sensing as well as surface (1 × 1 cm2) pressure mapping capabilities. |
| first_indexed | 2024-04-13T06:10:59Z |
| format | Article |
| id | doaj.art-a6fbaf63cc8743fa9bbe14f24642ba83 |
| institution | Directory Open Access Journal |
| issn | 1424-8220 |
| language | English |
| last_indexed | 2024-04-13T06:10:59Z |
| publishDate | 2016-04-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Sensors |
| spelling | doaj.art-a6fbaf63cc8743fa9bbe14f24642ba832022-12-22T02:59:03ZengMDPI AGSensors1424-82202016-04-0116451110.3390/s16040511s16040511Contact Pressure Level Indication Using Stepped Output Tactile SensorsEunsuk Choi0Onejae Sul1Juyoung Kim2Kyumin Kim3Jong-Seok Kim4Dae-Yong Kwon5Byong-Deok Choi6Seung-Beck Lee7Department of Electronic Engineering, Hanyang University, 222 Wangsimni-ro, Seongdong-gu, Seoul 133-791, KoreaInstitute of Nano Science and Technology, Hanyang University, 222 Wangsimni-ro, Seongdong-gu, Seoul 133-791, KoreaDepartment of Electronic Engineering, Hanyang University, 222 Wangsimni-ro, Seongdong-gu, Seoul 133-791, KoreaDepartment of Electronic Engineering, Hanyang University, 222 Wangsimni-ro, Seongdong-gu, Seoul 133-791, KoreaDepartment of Electronic Engineering, Hanyang University, 222 Wangsimni-ro, Seongdong-gu, Seoul 133-791, KoreaDepartment of Electronic Engineering, Hanyang University, 222 Wangsimni-ro, Seongdong-gu, Seoul 133-791, KoreaDepartment of Electronic Engineering, Hanyang University, 222 Wangsimni-ro, Seongdong-gu, Seoul 133-791, KoreaDepartment of Electronic Engineering, Hanyang University, 222 Wangsimni-ro, Seongdong-gu, Seoul 133-791, KoreaIn this article, we report on a novel diaphragm-type tactile pressure sensor that produces stepwise output currents depending on varying low contact pressures. When contact pressures are applied to the stepped output tactile sensor (SOTS), the sensor’s suspended diaphragm makes contact with the substrate, which completes a circuit by connecting resistive current paths. Then the contact area, and therefore the number of current paths, would determine the stepped output current produced. This mechanism allows SOTS to have high signal-to-noise ratio (>20 dB) in the 3–500 Hz frequency range at contact pressures below 15 kPa. Moreover, since the sensor’s operation does not depend on a material’s pressure-dependent electrical properties, the SOTS is able to demonstrate high reproducibility and reliability. By forming a 4 × 4 array of SOTS with a surface bump structure, we demonstrated shear sensing as well as surface (1 × 1 cm2) pressure mapping capabilities.http://www.mdpi.com/1424-8220/16/4/511tactile sensortactile sensor arrayspatially digitized electrodestepped output characteristics |
| spellingShingle | Eunsuk Choi Onejae Sul Juyoung Kim Kyumin Kim Jong-Seok Kim Dae-Yong Kwon Byong-Deok Choi Seung-Beck Lee Contact Pressure Level Indication Using Stepped Output Tactile Sensors Sensors tactile sensor tactile sensor array spatially digitized electrode stepped output characteristics |
| title | Contact Pressure Level Indication Using Stepped Output Tactile Sensors |
| title_full | Contact Pressure Level Indication Using Stepped Output Tactile Sensors |
| title_fullStr | Contact Pressure Level Indication Using Stepped Output Tactile Sensors |
| title_full_unstemmed | Contact Pressure Level Indication Using Stepped Output Tactile Sensors |
| title_short | Contact Pressure Level Indication Using Stepped Output Tactile Sensors |
| title_sort | contact pressure level indication using stepped output tactile sensors |
| topic | tactile sensor tactile sensor array spatially digitized electrode stepped output characteristics |
| url | http://www.mdpi.com/1424-8220/16/4/511 |
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