A Study on the Lumbar Burden Evaluation of Work using One Smartphone

In this paper, we propose the human lumbar burden evaluation method and state estimation system using a smartphone and an application on agricultural work. The proposed system consists of two functions: (1) "State estimation" has a function of estimating posture (Stand up, Sit down, Crouch, Walk, etc.,) of the subjects, (2) "Lumbar burden estimation" has a function to estimate the angle of the waist from the angle of the subject's upper body and calculate the lumbar burden in combination with other parameters. The aim of this paper is to get the data of the subject's work status in the agricultural field in a simple manner and quasi-real time and help improve the agricultural work efficiency by constructing the agricultural work burden evaluation system were using a smartphone. In this paper, we show on the experimental results of two functions and the evaluation of the actual agricultural work. (C) 2018 The Authors. Published by Atlantis Press SARL. This is an open access article under the CC BY-NC license.