| 摘要 |
<p>The angling device consists of an electrically driven boat, a string controller and a remote controller. The electrically driven boat is equipped with a radio command receiver, a supersonic detector to measure fathom, fish density and other parameters, digital sound recording and playback unit, a fish attracting unit, a string throwing and angling unit. The string controller can control the casting of lines, and can measure the casting lenght and, it can also serve to tease electrically and angle automatically. The fishers transfer the baits, string dropstonesand floats together with the boat to selected areas ; the parameters such as fathom, fish density and other parameter measured by the supersonic detector are reported to the fisher, so that the fisher can throw baits to angle after having a good knowledge. The angling device overcomes problems associated with angling during a long time, and with use of the electric-digital technology, it is easy for the fishers to know the habit of different fishes, and increase the angling harvest yield greatly.</p> |
