Endre søk
RefereraExporteraLink to record
Permanent link

Direct link
Referera
Referensformat
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Annet format
Fler format
Språk
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Annet språk
Fler språk
Utmatningsformat
  • html
  • text
  • asciidoc
  • rtf
Smartphone Acquisition and Online Visualization of IMU and EMG Sensor Data for Assessment of Wrist Load
KTH, Skolan för kemi, bioteknologi och hälsa (CBH).
KTH, Skolan för kemi, bioteknologi och hälsa (CBH).
2018 (engelsk)Independent thesis Advanced level (degree of Master (Two Years)), 20 poäng / 30 hpOppgaveAlternativ tittel
Smartphone-mätning och online-visualisering av IMU- och EMG-data för bedömning av handledsbelastning (svensk)
Abstract [en]

Work-related musculoskeletal disorders constitutes a substantial burden for society, generating individual suffering and financial costs. Quantifying the musculoskeletal stress and establishing exposure-response relationships is an important step in facing this problem.

Observational methods for assessing exposure in the field of ergonomics have shown poor results, and the technical measurement methods that exists are often complicated to use which limits their scope to scientific purposes.

This work describes the development of a prototype measurement system aimed to simplify ambulatory measurements of musculoskeletal load, specifically aimed at the wrist and hand. Wearable sensors including Inertial Measurement Units (IMU:s) and Electromyography (EMG) were connected to a smartphone and used for measuring wrist movement and forearm muscle activity. Data sampled in the smartphone was stored online in a cloud database, and a webapplication was developed to visualize work-load exposure.

Testing under controlled conditions indicated that muscular rest can be measured and classified according to suggested risk thresholds. Accurate angular measurements were difficult to implement because of lacking inter-sensor alignment in the horizontal plane, as well as uncertainties in the Bluetooth protocol.

Future work should focus on the IMU:s and look to further develop a method of correcting the relative angle error, as well as investigating accurate time synchronization of the two sensors.Alternatively, deriving angular velocities directly from the IMU gyroscopes could be investigated.

sted, utgiver, år, opplag, sider
2018. , s. 30
Emneord [en]
Wrist, Work-related musculoskeletal disorders, WRMD, Inertial Measurement Unit, IMU, Electromyography, EMG, Goniometer
HSV kategori
Identifikatorer
URN: urn:nbn:se:kth:diva-231304OAI: oai:DiVA.org:kth-231304DiVA, id: diva2:1223743
Eksternt samarbeid
Karolinska Institutet, Institutet för miljömedicin (IMM)
Fag / kurs
Medical Engineering
Utdanningsprogram
Master of Science - Medical Engineering
Veileder
Examiner
Tilgjengelig fra: 2018-06-26 Laget: 2018-06-25 Sist oppdatert: 2018-06-26bibliografisk kontrollert

Open Access i DiVA

MunguiaChang_Hult_Thesis(4291 kB)380 nedlastinger
Filinformasjon
Fil FULLTEXT01.pdfFilstørrelse 4291 kBChecksum SHA-512
050bf8fcbd53cba3c2ccc8f9bcf92cd0630b0c036b40df63da362803a7b7c25672e27d5f562662bbf7a1fdb542a7b5c32559cb829e38d6601fd23e4dcb8d62ed
Type fulltextMimetype application/pdf

Av organisasjonen

Søk utenfor DiVA

GoogleGoogle Scholar
Totalt: 380 nedlastinger
Antall nedlastinger er summen av alle nedlastinger av alle fulltekster. Det kan for eksempel være tidligere versjoner som er ikke lenger tilgjengelige

urn-nbn

Altmetric

urn-nbn
Totalt: 521 treff
RefereraExporteraLink to record
Permanent link

Direct link
Referera
Referensformat
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Annet format
Fler format
Språk
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Annet språk
Fler språk
Utmatningsformat
  • html
  • text
  • asciidoc
  • rtf