Studies on the workload at the time of combine harvest work: Change of a heart rate and a motion of a viewpoint
1999
Kashiwazaki, M. (Utsunomiya Univ. (Japan). Coll. of Agriculture) | Ishikawa, F. | Kikuchi, Y. | Takenaga, H. | Oogaki, T.
This research was performed to grasp a combine harvest work in which the agricultural work using an automated agricultural machine highly influences the heart rate and motion of the viewpoint of workers. We selected combine harvest work. Combine harvest work is because crop and field conditions tend to be ready and an advanced agricultural machine is used. The results are as follows. 1) The heart rate under the harvest work varied with the individual characteristics of the people involved in the labor, as well as their skill level, and operation experience. However, this tendency was lowered and stabilized by the work becoming more skilled. 2) The workload calculated from the rising ratio of a heart rate was the same grade as a walk, and was a comparatively slight workload. However, it was found that an increase in the heart rate number appears temporarily at the time of the entrainment to a combine harvester and alighting, and momentarily a big load arises. 3) There were many repeated trials in, which motion viewpoint ahead of the combine harvester, to the right or left end divider and the front was measured using an eye mark recorder. Moreover, a relation between the grade of experience and gaze time was noted. 4) When direction control equipment is used, a worker's steering frequency decreases to 1/3, which is considered to be due to the effect of automated equipment. 5) However, when steering by direction control equipment was contrary to a worker's intention, it was found that the heart rate number goes up temporarily and momentarily a strong workload is applied, which confuses the action of the viewpoint, and consequently the steering frequency goes up
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