In the on-growing facility, the single cages (Fig. 1B) rotated
similar to conventional conveyer belts, and the lobsters were fed
when the cages were in an up-right vertical position. The cameras
were fixed under the feeding robots, enabling the system to
monitor each single individual every day by taking pictures inside
the cages before feeding. Image processing programs then determined
whether the lobsters were dead or alive, and if molting
had occurred. The image processing program also extrapolated
the expected time to harvest by calculating molting frequency.
After feeding, the cages rotated in right hand direction, and new
cages came into vertical up-right position. Lobsters inhabiting the
cages on the way down started eating their daily meals. When the
cages came in vertical down-wards position, uneaten feed and fecal
waste fell out of the cages. A wiper with suction rotated vertically
on the bottom, efficiently cleaning the tank floor. Self-cleaning of
cages was facilitated by inlet current flow being placed within each
single-cage unit, while outlet current flow was positioned between
the units. Thus, new water was supplied every single cage in addition
to providing a slightly overhead pressure pushing the waste
out of the cages facing down toward the bottom.
In the on-growing facility, the single cages (Fig. 1B) rotatedsimilar to conventional conveyer belts, and the lobsters were fedwhen the cages were in an up-right vertical position. The cameraswere fixed under the feeding robots, enabling the system tomonitor each single individual every day by taking pictures insidethe cages before feeding. Image processing programs then determinedwhether the lobsters were dead or alive, and if moltinghad occurred. The image processing program also extrapolatedthe expected time to harvest by calculating molting frequency.After feeding, the cages rotated in right hand direction, and newcages came into vertical up-right position. Lobsters inhabiting thecages on the way down started eating their daily meals. When thecages came in vertical down-wards position, uneaten feed and fecalwaste fell out of the cages. A wiper with suction rotated verticallyon the bottom, efficiently cleaning the tank floor. Self-cleaning ofcages was facilitated by inlet current flow being placed within eachsingle-cage unit, while outlet current flow was positioned betweenthe units. Thus, new water was supplied every single cage in additionto providing a slightly overhead pressure pushing the wasteout of the cages facing down toward the bottom.
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