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Hip position classification device
Thesis (MEng)--Stellenbosch University, 2019.
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| Other Authors: | |
| Format: | Thesis |
| Language: | en_ZA |
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Stellenbosch : Stellenbosch University
2019
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| _version_ | 1867613738313449472 |
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| access_status_str | Open Access |
| author | Van Niekerk, Philippus Johannes |
| author2 | Muller, Jacobus Hendrik |
| author_browse | Muller, Jacobus Hendrik Van Niekerk, Philippus Johannes |
| author_facet | Muller, Jacobus Hendrik Van Niekerk, Philippus Johannes |
| author_sort | Van Niekerk, Philippus Johannes |
| collection | Thesis |
| dc_rights_str_mv | Stellenbosch University |
| description | Thesis (MEng)--Stellenbosch University, 2019. |
| format | Thesis |
| id | oai:scholar.sun.ac.za:10019.1/106230 |
| institution | Stellenbosch University (South Africa) |
| language | en_ZA |
| last_indexed | 2026-06-10T12:40:54.953Z |
| license_str | Other — see source repository |
| provenance_str_mv | Harvested via OAI-PMH from SUNScholar — Stellenbosch University Repository |
| publishDate | 2019 |
| publishDateRange | 2019 |
| publishDateSort | 2019 |
| publisher | Stellenbosch : Stellenbosch University |
| publisherStr | Stellenbosch : Stellenbosch University |
| record_format | dspace |
| source_str | SUNScholar — Stellenbosch University Repository |
| spelling | oai:scholar.sun.ac.za:10019.1/106230 Hip position classification device Van Niekerk, Philippus Johannes Muller, Jacobus Hendrik Stellenbosch University. Faculty of Engineering. Dept. of Mechanical and Mechatronic Engineering (CRSES) Hip impingement Magnetometers Robotics in medicine Femoroacetabular impingement Robots -- Motion UCTD Thesis (MEng)--Stellenbosch University, 2019. ENGLISH ABSTRACT: Robust, user-friendly hip position tracking device that is capable to function outside of a lab environment can lead to valuable progression in the hip impingement research field. This project discusses the design and testing of such a device. The device developed functions by tracking a permanent magnet on the thigh with magnetometers placed on the pelvis to classify the relative angle between the pelvis and the femur (hip angle). The position tracking device only tracks if the user reaches a specific hip angle that is of interest. The angle is set by the user in the calibration procedure. The device classifies the position of interest, as indicated by the user, with a k-nearest neighbours (k-NN) algorithm. The device was verified for accuracy against a Vicon Vantage motion capture system. Five participants took part in the study structured in a two-tier structure. The first tier was to evaluate the method of motion capture. The second tier’s objective was to verify the accuracy of the device. The algorithm output is the amount of calibrated "nearest neighbours" expressed as a percentage activated at the current pose. For a 100 % output, the device is accurate below 5 o in all three anatomical angles of the hip. AFRIKAANSE OPSOMMING: 'n Robuuste, gebruikersvriendelike heup posisie metingstoestel wat buite 'n laboratorium gebruik kan word sal ‘n geweldige bydrae lewer tot die heup impingement navorsingsveld. Hierdie projek bespreek die ontwerp en toets van so 'n toestel. Die toestel is geverifieer vir akkuraatheid teen 'n Vicon Vantage bewegingsopvangstelsel. Vyf deelnemers het deelgeneem aan die studie wat gestruktureer was in twee vlakke. Die eerste vlak was om die metode van bewegingsopname te evalueer. Die tweede vlak was om die akkuraatheid van die toestel te verifieer. Die toestel wat ontwikkel is funksioneer deur die magneetveld om ‘n permanente magnet te meet. Die magneet word geplaas op die femur en die magnetiesesensore op die bekkenbeen. Die relatiewe hoek tussen die bekkenbeen en die femur (heuphoek) kan so bereken word en geklassifiseer word. Die toestel meet slegs as die gebruiker 'n spesifieke heuphoek wat van belang is bereik. Die hoek word deur die gebruiker in die kalibrasieprosedure gestel. Die toestel klassifiseer die posisie van belang, soos aangedui deur die gebruiker, met 'n k-naaste bure (k-NN) algoritme. Die algoritme-uitset is die hoeveelheid gekalibreerde "naaste bure", uitgedruk as 'n persentasie. Vir 'n 100 % uitset is die toestel akkuraat onder 5 o in al drie anatomiese hoeke van die heup. 2019-02-28T10:41:20Z 2019-04-17T08:35:52Z 2019-02-28T10:41:20Z 2019-04-17T08:35:52Z 2019-04 Thesis http://hdl.handle.net/10019.1/106230 en_ZA Stellenbosch University ix, 94 pages : illustrations application/pdf Stellenbosch : Stellenbosch University |
| spellingShingle | Hip impingement Magnetometers Robotics in medicine Femoroacetabular impingement Robots -- Motion UCTD Van Niekerk, Philippus Johannes Hip position classification device |
| title | Hip position classification device |
| title_full | Hip position classification device |
| title_fullStr | Hip position classification device |
| title_full_unstemmed | Hip position classification device |
| title_short | Hip position classification device |
| title_sort | hip position classification device |
| topic | Hip impingement Magnetometers Robotics in medicine Femoroacetabular impingement Robots -- Motion UCTD |
| url | http://hdl.handle.net/10019.1/106230 |
| work_keys_str_mv | AT vanniekerkphilippusjohannes hippositionclassificationdevice |