RADIO TRANSMISSION TYPE FISH FINDING ACQUISITION SYSTEM

摘要

PURPOSE:To know the state of the entry of fish into a stationary net and the environment nearby the stationary net at a glance by sending video information on an underwater target in the stationary net, water temperature information, tidal current information, and a net state signal to a ground station and sending the operation control signal for the net to a buoy station according to the information. CONSTITUTION:A fish shoal coming to the stationary net 40 is impeded by a fence net 6 in its course to move to a fish entrance 38 and enter a surrounding net 4. The fish shoal F in the net 4 moves to a fish entrance 52 formed at a distance from the fish entrance 48 to enter a box net 8. A signal received by a fish finding reception part is amplified and processed, and then sent to the ground station 100 through a transmitting and receiving antenna 80. A synchronizing signal, a trigger signal, a video signal of the underwater target, and a signal of the water temperature information are inputted to a radio equipment through the antenna. A control signal for closing the nets is outputted and shield films 54 and 55 are closed. Consequently, the state of the entrance of fish into the net 40 and the environment nearby the net 40 are known at a glance.