Determining Fish Hunger State in a Smart Fish Farm Using Digital Signal Processing of the Water Current

The traditional method of feeding the fish in an aquarium leads to wastage of the feed and poor water quality as the water easily gets contaminated and consequently hampers fish growth. Also, the method of having a pre-set time has not much effect to the problem as it may lead to unequal feed distribution and starvation of the smaller fishes. A behavioural pattern whereby the fish can be fed anytime will balance feed intake by the fish and promote growth. It will also reduce wastage. The identified state where the fish are more settled at the water surface with much movement thereby increasing the water current is used in this work. A gyroscope is proposed for the measurement of angular displacement caused by the water current. Because of the non-availability of the gyroscope and other necessary conditions, a dataset was formulated and histogram function in Microsoft Excel used in plotting the signal state of the two conditions. The difference in the two signal levels guarantees the reliability of this process in determining when it is more appropriate to feed the fish using an automated method in a smart fishpond.