JP3519791B2 - Fish finder - Google Patents

Description

Detailed Description of the Invention

[0001]

FIELD OF THE INVENTION The present invention relates to a fish finder.

[0002]

2. Description of the Related Art A fish finder can detect seabed information with an ultrasonic wave transmitter / receiver or the like, display a seabed image on a display screen, and can be used for searching for a school of fish or seabed topography.

On a normal display screen, a depth scale is vertically displayed at the beginning of scrolling of the seabed image. On this depth scale, numerical values indicating depths are attached at equal intervals in a display range corresponding to the selected depth range. And
The depth is detected by measuring the time it takes for the pulse emitted from the transmitter / receiver to the seabed to be reflected by the seabed or the school of fish, and to detect the depth, and the detected depth is the corresponding position of the depth scale for each sampling. The seabed image is displayed by plotting on and scrolling sequentially.

[0004]

In order for the driver of a ship equipped with such a fish finder to know the current water depth while sailing, it is necessary to know how many meters on the depth scale the seabed is displayed. , Read the value on the scale to judge.

However, when the depth range is set to the automatic adjustment mode, the depth range is frequently switched when the water depth changes greatly, and the depth scale displayed corresponding to the depth range is attached. Since the numerical value changed changes,
Every time the driver has to read the numerical value on the scale to judge the water depth, there is a great risk of making a wrong judgment especially when the driver is busy.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned conventional problems and attempts to improve it. It is an object of the present invention to make it possible to accurately judge the present water depth which changes every moment.

[0007]

SUMMARY OF THE INVENTION The present invention comprises a range selection means for selecting a depth range, a display device for displaying a seabed image in a longitudinal section on a display screen, and a variable reference graphic, On the display screen, based on the seabed information detected by the transducer, at a scale specified by the depth range selected by the range selection means, while forming a seabed image display, in inverse proportion to the depth range. An image forming means for displaying and forming a variable reference figure on a display screen so that the size of the detector changes stepwise or steplessly.
Relative of variable reference figure based on the size of hull carrying
The size of each variable reference figure is set to the depth level.
Change in inversely proportional to the range
Display on the display screen so that
It was done like this.

A range selector for selecting the depth range
The seabed image is displayed in a vertical cross-section on the tier and the display screen.
Display device for showing and displaying variable reference graphic
And the detection on the display screen by the transducer
Based on the seabed information, the range selection means selects
Undersea view at a scale specified by a specified depth range
Image is displayed and is almost inversely proportional to the depth range
So that the size changes stepwise or steplessly
The variable reference figure on the display screen.
The image forming means is provided, and the depth range is selected by the depth selecting means.
On the display screen when it is switched
Before changing the variable reference figure that was displayed up to
It is displayed as it is at the end of the seabed image represented by the depth range of
Controlled to show and scroll
When the depth range is switched by the selection means,
Variable reference diagram that was previously displayed on the display screen
Shaped seabed represented by the depth range before switching
As it is displayed at the end of the image as it is and scrolled
It is controlled.

Here, the depth range means the display range of the depth from the water surface displayed on the screen to the lower limit depth, and the range selection means of this depth range corresponds to the depth to the seabed and corresponds to the seabed. It is possible to use an automatic control means (configured by a calculation means in the central control unit) for automatically setting so as to fit within the screen, or an input means such as a key switch for designating a depth range. .

As the variable reference figure, figures such as fishing boats, leisure boats and yachts can be proposed.

[0011]

The present water depth can be visually recognized in an instant by observing the size ratio between the size of the variable reference graphic displayed on the display screen and the depth from the water surface to the seabed.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment of the present invention will be described with reference to the accompanying drawings.

As shown in FIG. 1, the detector main body 1 provided with a display device 3 for displaying a seabed image on a display screen 4 has a control switching device 2 in which key switch groups are arranged in a row. The output content of is selected.

A central control unit (CPU) 5 shown in FIG. 2 is built in the detector main body 1. The central control device 5 is connected with a wave transmitter / receiver 6 as an input device, and is also connected with the control switching device 2. Further, the display device 3 is connected via the display RAM 7 and the display control unit 8. Furthermore, the control program ROM 9
Also, the arithmetic control RAM 10 is connected.

Next, the output mode of the display device 3 will be described.

As shown in FIG. 3, on the display screen 4 of the display device 3, the seabed image 11 based on the input information from the transducer 6 is displayed by the switching and switching control of the control switching device 2. . The seabed image 11 scrolls to the left in the figure as the ship advances. Further, on the display screen 4, a depth scale 12 is displayed in the right margin area. The depth scale 12 displays the numerical values from the water surface to the lower limit depth corresponding to the depth range selected by the range selecting means, which will be described later, assigned to the full scale.

Then, an ultrasonic wave is radiated from the transmitter / receiver 6 to the seabed, the reflected wave is received by the transmitter / receiver 6, the depth is detected by the time difference, and one or a plurality of samplings are performed. Plotting at any corresponding depth position of the vertical pixel lines on the display screen 4, and by consecutively plotting the depth of the seabed topography x, fish shadow y, etc. and their temporal changes, the screen 4 is scrolled to the left along with the screen. Draw on 4. Therefore, on the display screen 4, the seabed image 11 that changes according to the traveling distance of the ship is displayed in a vertical cross section.

Further, the depth range of the display screen 4 is determined by the range selecting means. In the present invention, the depth range means a display range of the depth from the water surface to the lower limit depth displayed on the display screen 4, and the depth range range selecting means automatically determines the depth range corresponding to the depth of the seabed. It can be easily configured by automatic adjusting means selected according to the above, or manual setting means arbitrarily selected according to the detection purpose by the input means. The automatic adjusting means and the manual setting means can be arbitrarily selected by mode switching by the control switching device 2. Thus, this range selecting means is embodied by the central control device 5 and the control switching device 2 in this embodiment.

By switching the mode to the automatic adjusting means, the maximum depth of the seabed is automatically changed from the maximum display depth of 40 m to 80 m so that the maximum depth of the seabed falls within the range of 2/3 of the maximum depth on the display screen 4. It is set so that the seabed is switched to fit in the display screen 4 and the depth dimension on the display screen 4 is as large as possible for easy viewing.

Next, the main part of the present invention will be described.

A variable reference graphic 13 is displayed on the display screen 4. As the variable reference figure 13,
Shapes of fishing boats, leisure boats, yachts, etc. can be suggested. Further, the display position of the variable reference graphic 13 is preferably a blank area on the upper side of the display screen 4, and particularly, a line on the water mark at the 0 m position of the depth scale 12 is a suitable display position. The size as the basis of the scale of the variable reference graphic 13 is individually set based on the size of the hull on which the detector is mounted. That is, it is set by inputting a numerical value representing the size of the hull by the control switching device 2 and storing this numerical value in the storage unit of the central control device 5.

Then, the seabed image 1 on the display screen 4
1 is displayed and formed by the image forming means constituted by the central control unit 5 on the basis of the seabed information detected by the wave transmitter / receiver 6 on a scale specified by the depth range selected by the range selecting means. , Variable reference figure 1
3 is displayed and formed by the image forming means of the central control unit 5 so as to have a relationship in which the size changes stepwise or steplessly in almost inverse proportion to the depth range.

In such a structure, as shown in FIG.
When the depth range of 0 to 40 m is selected, the display screen 4 displays the depth scale 12 and the seabed image 11 on the scale specified by the depth range, and the line indicating the water surface of the seabed image 11 is displayed. , The variable reference figure 13 reduced in scale corresponding to the depth range is displayed.
Accordingly, the current water depth can be visually recognized in an instant by looking at the size ratio of the size of the variable reference graphic 13 and the depth from the water surface to the seabed.

Further, when the seabed becomes deeper and the depth range is selected deeper by the automatic adjusting means or the manual setting means of the range selecting means, the scale of the depth on the display screen 4 is controlled by the control of the image forming means. As a result, the depth scale 12 and the seabed image 11 are vertically compressed and displayed as compared with the case where the depth scale 12 and the seabed image 11 are shallow. That is, as shown in FIG. 4, for example, the depth range is doubled from 0 to 80 m.
3 is selected, the display scale becomes 1/2 as compared with the depth range of 0 to 40 m in FIG. 3, and the depth scale 12 and the seabed image 11 are vertically compressed to 1/2. Further, when the depth range is doubled, the variable reference graphic 13 whose size changes in inverse proportion to the depth range is displayed in half the size. Therefore, even if the depth range is changed in this way, the water depth can be visually recognized in an instant by looking at the size ratio of the size of the variable reference graphic 13 and the depth from the water surface to the sea bottom.

FIG. 5 shows another embodiment. In this embodiment, when the depth range is switched, the variable reference graphic 13 that has been displayed until then is displayed as it is at the end of the seabed image 11 represented by the depth range before switching and scrolled. It is the one. By making such a display, it is easy to confirm the variation of the depth range.

[0026]

As described above, according to the present invention, the seabed image is displayed and formed on the display screen on the scale specified by the depth range selected by the range selection means, and is substantially inversely proportional to the depth range. A variable reference figure whose size is changed stepwise or steplessly is displayed and formed, and can be changed based on the size of the hull on which the detector body is mounted.
The relative size of the reference figure is set individually and the variable reference
The figure is stepped or stepless in almost inverse proportion to the depth range
On the display screen so that the size changes relationship
Even if the depth range changes, the current water depth can be visually determined by observing the size ratio between the variable reference figure displayed on the display screen and the depth from the water surface to the seabed. It has an excellent effect that you can know it in an instant and can judge the changing water depth without error. In addition, the present invention uses the range selection means for depth.
When the range is switched, the display screen
You can switch the variable reference figure that was displayed until then.
To the end of the seabed image represented by the depth range before
It is controlled to display and scroll.
By making such a display, the depth range
It is easy to check the movement.

[Brief description of drawings]

FIG. 1 is a front view showing an example of a fish finder.

FIG. 2 is a block diagram of an embodiment of the present invention.

FIG. 3 is a front view showing an example of a display screen 4.

FIG. 4 is a front view showing another example of the display screen 4.

FIG. 5 is a front view of a display screen 4 according to another embodiment.

[Explanation of symbols]

1 Detector main body 2 Control switching device 3 Display device 4 Display screen 5 Central control device 11 Seabed image 12 Depth scale 13 Variable reference figure

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Claims (2)

(57) [Claims] 1. A range selecting means for selecting a depth range, and a seabed image is displayed in a longitudinal section on a display screen,
And a display device for displaying a variable reference figure, and a seabed image is displayed on the display screen on a scale specified by the depth range selected by the range selection means based on the seabed information detected by the transducer. thereby forming a variable reference graphic comprises an image forming means for displaying formed on the display screen as step or steplessly size and approximately inversely proportional to the depth range is related to changes in the detector body Variable reference based on the size of the ship
The relative size of the figure is set individually, and the variable reference figure is set.
Is stepwise or steplessly proportional to the depth range.
Display on the display screen so that
A fish finder characterized in that the fish finder is formed. 2. A range selecting means for selecting a depth range and a seabed image are displayed in a longitudinal section on a display screen.
And a display device that displays a variable reference graphic, and a transducer that is detected on the display screen.
It is selected by the range selection means based on the seabed information.
Seafloor image at a scale specified by the depth range
As the display is formed, it is almost inversely proportional to the depth range.
Possible to have a relationship in which the size changes stepwise or steplessly
An image form that displays a variable reference figure on the display screen
When the depth range is switched by the range selection means.
The variable that was previously displayed on the display screen.
The reference figure is represented by the depth range before switching.
It is displayed as it is at the end of the seabed image and scrolled.
A fish finder characterized by being controlled like this.