Mind the gap – development of conversion models between accelerometer- and IMU-based measurements of arm and trunk postures and movements in warehouse work
Artikel i vetenskaplig tidskrift, 2022

Sensor type (accelerometers only versus inertial measurement units, IMUs) and angular velocity computational method (inclination versus generalized velocity) have been shown to affect the measurements of arm and trunk movements. This study developed models for conversions between accelerometer and IMU measurements of arm and trunk inclination and between accelerometer and IMU measurements of inclination and generalized (arm) velocities. Full-workday recordings from accelerometers and IMUs of arm and trunk postures and movements from 38 warehouse workers were used to develop 4 angular (posture) and 24 angular velocity (movement) conversion models for the distributions of the data. A power function with one coefficient and one exponent was used, and it correlated well (r2 > 0.999) in all cases to the average curves comparing one measurement with another. These conversion models facilitate the comparison and merging of measurements of arm and trunk movements collected using the two sensor types and the two computational methods.

Sensor conversion

Field measurement

Inertial measurement unit

Författare

Mikael Forsman

Stockholms läns landsting

Karolinska Institutet

Kungliga Tekniska Högskolan (KTH)

Xuelong Fan

Karolinska Institutet

Ida-Märta Rhen

Stockholms läns landsting

Karolinska Institutet

Chalmers, Industri- och materialvetenskap, Produktionssystem

Carl Mikael Lind

Karolinska Institutet

Applied Ergonomics

0003-6870 (ISSN) 1872-9126 (eISSN)

Vol. 105 103841

Ämneskategorier

Medicinsk laboratorie- och mätteknik

Annan medicinteknik

Havs- och vattendragsteknik

DOI

10.1016/j.apergo.2022.103841

PubMed

35917697

Mer information

Senast uppdaterat

2022-08-19