Studies on the Human Engineering of Harvesting and Transporting in Plastic House (II)

Simulation of Harvesting and Transporting

Abstract

The author performed the simulation of harvesting and transporting by using the model device which is able to change the size, the number and the position of the model cucumber. The results were as follows:
(1) Designating the one kind of model cucumbers from among the four kind of model cucumbers that were hanged on the model planting device, the author had a person pick the designated model cucumbers. The length of the four kind of model cucumbers were varied, but the diameter were constant. The one kind of model cucumbers were hundred in number.
The longest and the shortest model cucumbers was picked very easy.
The accuracy of picking increased with increase of the time of picking, however there was a limit in the accuracy of picking.
There was the above tendency in the case of picking of model cucumbers that the diameter was varied too (the length was constant).
(2) Varying the number of the designated model cucumbers, the author had a person pick the desinated model cucumbers. In this case, the picker was designated.
In both case that the length of the model cucumbers was varied and the diameter was varied, the accuracy of picking decreased when the number of the designated model cucumber was a few.
The relation between the time of picking and the accuracy of picking was almost the same as the case of (1).
(3) Designating three kind model cucumbers which the size resemble real thing, the author had a person pick the designated model cucumbers.
The accuracy of picking was good and there was few difference between those values of the accuracy of picking.
Varying the number of the designated model cucumber, the accuracy of picking was increased with increase of the time of picking when the number of the designated model cucumber was a few.
(4) The time of picking per unit number of the model cucumber picked was increased with decrease of the number of the designated model cucumber, because the time of seeking increase when the number of the designated model cucumber was a few.
There was no difference in walking distance of picker between applying the cart and customary working with hand-basket when the number of the designated model cucumber was a few.