Design and development of hand-opening and pinch force sensors

Andres Pena, Sathyakumar S. Kuntaegowdanahalli, James Abbas, Ranu Jung

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

There is growing interest in developing prosthetic limbs capable of providing sensory feedback to amputees. The development of such advanced systems requires accurate, quantitative assessment of the sensation perceived by the amputee. We have designed and fabricated robust, devices to track and record hand-opening distance and pinch force during a series of structured tasks performed by unilateral amputees using their intact hand to mirror perceived sensation in the amputated limb. For hand-opening distance measurement, the subject's thumb and forefinger are coupled to linear potentiometers. While subjects open and close their hand freely, the distance between the thumb and forefinger is estimated in real time by recording the voltage output. For pinch force measurement, a commercially-available mini compression load cell is mounted on a custom-designed aluminum assembly that is adjustable to enable measurement at different hand-opening distances. The load cell generates a voltage signal proportional to the applied pinch force. Calibration was accomplished by applying incremental forces using a compression load testing device while monitoring the voltage output. These measurements will help to quantify the amputee's perception of hand-opening and pinch force and thereby serve towards developing a subject-specific sensorstimulation map that can be programmed into an advanced prosthesis.

Original languageEnglish (US)
Title of host publicationProceedings - 29th Southern Biomedical Engineering Conference, SBEC 2013
Pages167-168
Number of pages2
DOIs
StatePublished - 2013
Event29th Southern Biomedical Engineering Conference, SBEC 2013 - Miami, FL, United States
Duration: May 3 2013May 5 2013

Other

Other29th Southern Biomedical Engineering Conference, SBEC 2013
CountryUnited States
CityMiami, FL
Period5/3/135/5/13

Fingerprint

Sensors
Electric potential
Sensory feedback
Load testing
Distance measurement
Force measurement
Prosthetics
Mirrors
Compaction
Calibration
Aluminum
Monitoring
Prostheses and Implants

ASJC Scopus subject areas

  • Biomedical Engineering

Cite this

Pena, A., Kuntaegowdanahalli, S. S., Abbas, J., & Jung, R. (2013). Design and development of hand-opening and pinch force sensors. In Proceedings - 29th Southern Biomedical Engineering Conference, SBEC 2013 (pp. 167-168). [6525729] https://doi.org/10.1109/SBEC.2013.92

Design and development of hand-opening and pinch force sensors. / Pena, Andres; Kuntaegowdanahalli, Sathyakumar S.; Abbas, James; Jung, Ranu.

Proceedings - 29th Southern Biomedical Engineering Conference, SBEC 2013. 2013. p. 167-168 6525729.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Pena, A, Kuntaegowdanahalli, SS, Abbas, J & Jung, R 2013, Design and development of hand-opening and pinch force sensors. in Proceedings - 29th Southern Biomedical Engineering Conference, SBEC 2013., 6525729, pp. 167-168, 29th Southern Biomedical Engineering Conference, SBEC 2013, Miami, FL, United States, 5/3/13. https://doi.org/10.1109/SBEC.2013.92
Pena A, Kuntaegowdanahalli SS, Abbas J, Jung R. Design and development of hand-opening and pinch force sensors. In Proceedings - 29th Southern Biomedical Engineering Conference, SBEC 2013. 2013. p. 167-168. 6525729 https://doi.org/10.1109/SBEC.2013.92
Pena, Andres ; Kuntaegowdanahalli, Sathyakumar S. ; Abbas, James ; Jung, Ranu. / Design and development of hand-opening and pinch force sensors. Proceedings - 29th Southern Biomedical Engineering Conference, SBEC 2013. 2013. pp. 167-168
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