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    • 2. 发明授权
    • Fish finder
    • 捕鱼者
    • US5594707A
    • 1997-01-14
    • US537611
    • 1995-10-02
    • Minoru GotoSatoru WatanabeMinoru AokiShuji KonishiKoji Kato
    • Minoru GotoSatoru WatanabeMinoru AokiShuji KonishiKoji Kato
    • G01S7/62G01S7/00G01S15/96
    • G01S7/003G01S15/96
    • A receiver converts an echo received by a transducer to a supersonic echo signal, and a controller measures the depth of obstacles depending on a timing for receiving the supersonic echo signal, obtains an echo level according to quantity of the supersonic echo signal, and determines the condition of the bottom depending on echo levels of a series of supersonic echo signals. A display unit provides a result of detection at a position of corresponding depth scale on a first display area for providing graphic displays of the obstacles as well as the bottom with a depth scale with a gradation or a pattern type corresponding to the echo level. Graphic displays of the echo level are also provided at a position corresponding to depth on a second display area having graphic displays corresponding to depth scale in the first display area.
    • 接收器将由换能器接收的回波转换为超音速回波信号,并且控制器根据接收超音速回波信号的定时测量障碍物的深度,根据超音速回波信号的量获得回波电平,并且确定 底部的条件取决于一系列超音速回波信号的回波水平。 显示单元在第一显示区域的相应深度标尺的位置处提供检测结果,用于提供障碍物的图形显示以及具有与回波水平对应的灰度或图案类型的深度比例的底部。 回波电平的图形显示还提供在与具有与第一显示区域中的深度比例对应的图形显示的第二显示区域上的深度对应的位置处。