| 摘要 |
A sonar fish finder system is provided for a boat for determining and displaying the location of fish in the body of water surrounding the boat. The system includes an electromechanical transducer assembly for transmitting sound waves in the body of water along separate paths in different directions into separate areas of the body of water, for receiving corresponding echoes from obstructions in the paths (including echoes from any fish in the paths) and for generating electrical signals in accordance with the received echoes. Electrical transmitters connected to the transducer assembly control transmission of the sound waves and receivers, connected to the transducer assembly, receive and process the electrical signals produced thereby. A microprocessor unit converts the output of said receivers into electrical data representative of display images of the separate areas of the body of water and a visual display device, preferably a liquid crystal display, simultaneously displays images corresponding to the electrical data at separate side by side locations on a screen to provide separate, simultaneous indications of the presence or absence of fish in the different areas.
|
