Design and calibration of pinch force measurement using strain gauge for post-stroke patients
Two fingers strength is an indicative measurement of pinch impairment. Conventionally, Fugl Meyer Upper Extremity Assessment (FMA-UE) is the primary standard to measure pinch strength of post-stroke survivors. In literature, the evaluation method performed by the th...
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| Format: | Article |
| Language: | English |
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Penerbit UTHM
2019
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| Online Access: | http://psasir.upm.edu.my/id/eprint/81098/ http://psasir.upm.edu.my/id/eprint/81098/1/PINCH%20FORCE.pdf |
| _version_ | 1848859022598340608 |
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| author | Alsayed, Abdallah Raja Ahmad, Raja Mohd Kamil Ramli, Hafiz Rashidi As'arry, Azizan |
| author_facet | Alsayed, Abdallah Raja Ahmad, Raja Mohd Kamil Ramli, Hafiz Rashidi As'arry, Azizan |
| author_sort | Alsayed, Abdallah |
| building | UPM Institutional Repository |
| collection | Online Access |
| description | Two fingers strength is an indicative measurement of pinch impairment. Conventionally, Fugl Meyer Upper Extremity Assessment (FMA-UE) is the primary standard to measure pinch strength of post-stroke survivors. In literature, the evaluation method performed by the therapist is subjective and exposed to inter-rater and intra-rater reliabilities. Recently, force-sensing resistors were implemented to measure two fingers force, but these sensors are subjected to nonlinearity, high hysteresis, and voltage drift. This paper presents a design of pinch force measurement based on the strain gauge. The pinch sensor was calibrated within a range of between 0 N to 50 N over a pinching length of 20 mm with a linearity error of 0.0123% and hysteresis of 0.513% during the loading and unloading process. The voltage drift has an average of 0.24% over 20 minutes. The pinch force measurement system reveals an objective pinch force measurements in evaluating the rehabilitation progress of post-stroke patients. |
| first_indexed | 2025-11-15T12:22:44Z |
| format | Article |
| id | upm-81098 |
| institution | Universiti Putra Malaysia |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-15T12:22:44Z |
| publishDate | 2019 |
| publisher | Penerbit UTHM |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | upm-810982020-09-09T08:15:57Z http://psasir.upm.edu.my/id/eprint/81098/ Design and calibration of pinch force measurement using strain gauge for post-stroke patients Alsayed, Abdallah Raja Ahmad, Raja Mohd Kamil Ramli, Hafiz Rashidi As'arry, Azizan Two fingers strength is an indicative measurement of pinch impairment. Conventionally, Fugl Meyer Upper Extremity Assessment (FMA-UE) is the primary standard to measure pinch strength of post-stroke survivors. In literature, the evaluation method performed by the therapist is subjective and exposed to inter-rater and intra-rater reliabilities. Recently, force-sensing resistors were implemented to measure two fingers force, but these sensors are subjected to nonlinearity, high hysteresis, and voltage drift. This paper presents a design of pinch force measurement based on the strain gauge. The pinch sensor was calibrated within a range of between 0 N to 50 N over a pinching length of 20 mm with a linearity error of 0.0123% and hysteresis of 0.513% during the loading and unloading process. The voltage drift has an average of 0.24% over 20 minutes. The pinch force measurement system reveals an objective pinch force measurements in evaluating the rehabilitation progress of post-stroke patients. Penerbit UTHM 2019 Article PeerReviewed text en http://psasir.upm.edu.my/id/eprint/81098/1/PINCH%20FORCE.pdf Alsayed, Abdallah and Raja Ahmad, Raja Mohd Kamil and Ramli, Hafiz Rashidi and As'arry, Azizan (2019) Design and calibration of pinch force measurement using strain gauge for post-stroke patients. International Journal of Integrated Engineering, 11 (4). pp. 40-50. ISSN 2229-838X; ESSN: 2600-7916 https://publisher.uthm.edu.my/ojs/index.php/ijie 10.30880/ijie.2019.11.04.005 |
| spellingShingle | Alsayed, Abdallah Raja Ahmad, Raja Mohd Kamil Ramli, Hafiz Rashidi As'arry, Azizan Design and calibration of pinch force measurement using strain gauge for post-stroke patients |
| title | Design and calibration of pinch force measurement using strain gauge for post-stroke patients |
| title_full | Design and calibration of pinch force measurement using strain gauge for post-stroke patients |
| title_fullStr | Design and calibration of pinch force measurement using strain gauge for post-stroke patients |
| title_full_unstemmed | Design and calibration of pinch force measurement using strain gauge for post-stroke patients |
| title_short | Design and calibration of pinch force measurement using strain gauge for post-stroke patients |
| title_sort | design and calibration of pinch force measurement using strain gauge for post-stroke patients |
| url | http://psasir.upm.edu.my/id/eprint/81098/ http://psasir.upm.edu.my/id/eprint/81098/ http://psasir.upm.edu.my/id/eprint/81098/ http://psasir.upm.edu.my/id/eprint/81098/1/PINCH%20FORCE.pdf |