Design of an Emitting Signal Generator of Shoals Monitor in Net-cage of Deep Water

Nowadays, marine fish culturing in net-cage of deep water is necessary to ensure that marine fish culturing develops continually A net-cage must be equipped with an acoustic monitor to detect the real-time status of shoals In order to meet the muli-choice requirement of frequencies and pulse widths, the paper proposes a method based on AT89C51 single chip microcomputer and 8155 chip The experimental results show that the method is simple, convenient, accurate, reliable and easily generalized