JPS61161474A - Alarm display device of color fish detector - Google Patents

Abstract

PURPOSE:To distinguish an alarm setting area from other places extremely easily by modulating the luminance of the alarm setting area on a display screen. CONSTITUTION:Blue, green and red emitted signals obtained from outputted terminals 77-79 are controlled at their emitted luminance levels in accordance with respective voltages. Resistors R1-R7 are weighted respectively, and if L-level signals are supplied to all input terminals 70-72, the output V0 of a data converter 76 is turned to the L-level. A voltage is impressed upon the resistor R4 connected to the bases of output transistors (TRs) TR1, TR2. Consequently, blue and green signals are outputted from the terminals 77, 78 respectively. When an H-level signal is applied to the terminal 70b and L-level signals are applied to the terminals 71, 72 respectively, the output Y1 of the converter 76 is turned to the L-level and blue and green signals are outputted to the terminal 77, 78 respectively. Thus, the color signals having different luminance levels corresponding to respective signals supplied to the terminals 70-72 are outputted from the terminals 77-79 respectively, so that the alarm setting area can be distinguished.

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention applies brightness variation (v4C color modulation) to the alarm setting area within the display screen in a color fish finder, and checks the alarm setting position. Then, the opening width and position of the fishing net opening of a trawler, etc. can be linked to the upper and lower limits of the alarm setting area.

The present invention relates to an alarm display device in a color fish finder that can display the relationship between the position of a school of fish and the position of a fishing net on the same display screen.

(Prior art) The alarm display displayed by the alarm display device in a conventional color fish finder is shown in Fig. 6. In Fig. 6, 21 is the oscillation edge of the ultrasonic transmission pulse. Since the transmitter/receiver is usually placed on the bottom of the ship, it is considered to be a so-called peak.22 indicates the alarm setting position, and 23 indicates the echo from the ocean floor. Also, F indicates an echo from a school of fish.

FIG. 7 is a conventional example of an alarm display in which the alarm setting position is shown using two alarm lines, one for setting the upper limit and the other for setting the lower limit. In FIG. 7, 31 is the sea surface, 33 is the seabed, F is an echo from a school of fish, AU is an alarm line for setting an upper limit, and A, L) is an alarm line for setting a lower limit.

<Problems to be Solved by the Invention> However, in the conventional example shown in FIG. 6, the alarm setting area is located above the alarm 822.

There is a drawback that it is difficult to determine whether it is on the bottom side.

Also, in the conventional example shown in FIG. 7, depending on the case.

In such a case, the alarm line AL for setting the lower limit may enter above the alarm edge AU for setting the upper limit and be displayed at the position AL, for example.

Even if the alarms iAU and AL were expressed using color differences, it would be difficult to tell which area is set as the alarm area.

In order to eliminate the above-mentioned drawbacks of the conventional technology, the present invention applies brightness modulation to the alarm setting area on the display surface of the color fish finder.

An object of the present invention is to provide an alarm display device with an easy-to-understand alarm setting area.

(Means for Solving the Problems) In order to achieve the above object, the alarm display device in the color fish finder of the present invention outputs a fish school information signal, an alarm signal, and a display surface width signal in the water depth direction. A color fish finder equipped with a data processing section, a D/A converter that is driven under the control of the output signal of the data processing section, and a display section that displays colors based on the output signal of the D/Ai converter. The D/A converter is comprised of a data converter and a drive circuit for the three primary colors of the color fish finder, and each of the drive circuits is provided with a storm pattern for modulating each of the three primary color signals. A resistor is provided, and the fish school information output from the converter is applied to the data, and the AND output of both the alarm signal and the display surface width signal in the water depth direction is applied to the shifting resistor. The feature is that brightness modulation is applied to the alarm setting area on the display screen.

<Function> Since the present invention is configured as described above, when an alarm signal is input to the drive circuit of the D/A converter, a voltage is applied to an appropriate weighting resistor in accordance with the alarm signal. Accordingly, brightness modulation is applied to the alarm setting area on the display surface of the display section 9 due to the difference in strength of each resistor.

<Example> The present invention will be described in detail below based on the example shown in the drawings.

FIG. 1 is a schematic block diagram showing one embodiment of an alarm display device in a color fish finder according to the present invention.

In this figure, 12 is a trawler equipped with a transducer 1 and a receiver 9, 13 is a rope pulled out from the trawler 12, and 14 is a fishing net attached to the end of the rope 13. A net mouth fish finder N is equipped at the fishing net opening of the fishing net 14. The information between the upper side of the fishing net mouth and the sea surface S is obtained by the ultrasonic technique signal PU emitted from this net-mouth fish finder N toward the sea surface S, and [, the information between the lower side of the fishing net mouth and the seabed B is obtained. These information signals PUs and PLs are sent to the receiver 9 as an ultrasonic 0jctF7 information signal Pn,
Furthermore, the receiving section! 0 and 1, the data processing section 11 processes it into a net reduction information signal indicating the location of the fishing net mouth, whether it is seabed B or sea surface S, and this fishing net information signal is sent to the next stage. Data processing section 5
The signal is input to the system and processed here into an alarm signal, which will be described later.

This alarm signal is sent from the data processing section 5 to the next stage D.
/Af converter 7.

10,000, the transmission section 2 is driven by the transmission trigger pulse formed by the time base section 3 (see TX-TRIG shown in Figure 3 A), and the ultrasonic signal Pf is transmitted by the transducer 1 toward the seabed B. fired.

The seventh reflected wave is received by the same transducer as fish school information. The U-shape of this received fish school information signal is shown in Figure 3. In this figure, TX is a transmitted signal wave, F is an echo from a school of fish, and echo from B+smJ&.

The fish school information signal received by the transducer 1 (see the opening in FIG. 3) is amplified by the receiving section 4 shown in FIG. 1 and sent to the data processing section 5.

The data processing section 5 converts the received fish school information signal (see Figure 3) into a 3-bit digital number 13 corresponding to the amplitude of the signal.

After this data is temporarily stored in a memory for one screen (memory device), it is output to the D/A converter 7 in accordance with the synchronization signal from the time pace section 3 to the color pneumatic tube display @8.

The D/A converter 7 is a data converter that receives the above-mentioned fish school information signal, fishing net information signal, etc. as input.

The output signal from this data converter and the data processing section 5
The color fish flT is controlled by the output signal Ji9 (alarm signal, display surface width signal in the water depth direction, etc. described later).
It consists of the three primary colors of Detection Island ('ff, green, red (7)) and a drive circuit.

An example of a specific circuit of this D/A converter 7 is shown in FIG. In this figure, 76 is a data converter, 70
．． The 3-bit digital signal (fish school information signal) is input to the data converter 7G through these input terminals 70, 71,72k. 76 is this 3-bit digital signal input (A.

B, C) as 8-bit digital signal output (YO0Yl
~Y7).

77, 78, and 79 are blue, green, and red coloring signal output terminals to the color cathode ray tube display section 8 (see FIG. 1). still,
The back, green, and red coloring signals appearing at these output terminals 77, 78, and 79 are processed, and the brightness of the coloring is controlled by voltage as described later.

R1-R7 are weighted resistors, respectively.For example, when L level signals are supplied to all input terminals 70, 71 and 72, the data changes 111! ! The output YO of 97G becomes an L level signal, and the resistor R4 connected to the output transistor TRI and TFE20 pace
Magnetic pressure is applied to. As a result, a blue coloring signal is outputted to the output terminal 77, and a green coloring signal is outputted to the output terminal 78.

Further, an H level signal is input to the input terminal 70, and an H level signal is input to the input terminal 71.
When an L level signal is supplied to each of 72,
The output Y1 of the data converter 76 becomes an L level signal, and 1 voltage is applied to the resistor R3 connected to the pace of the output transistor TRI and the resistor R3 connected to the pace of the output transistor TR2. applied. the result,
Similarly, the output terminal 77 receives a blue coloring signal, and the output terminal 7
8, a green coloring signal is outputted respectively. in this case,
Set the resistance value of resistor R3 smaller than that of resistor R4 (
As a result, the output YO of the data conversion 576 produces a color whose brightness is higher than that of Yl.

By applying the VC in this manner, color signals with different brightness warpage corresponding to each signal supplied to the input terminals 70, 71, and 72 are output to the output terminal 7.
They are output on 7, 78, and 79 respectively.

75 is an input terminal for a blanking signal. This plastic
It is not necessary for the color CRT display section 8 to generate color in areas where the display is not needed, and in such a case all signals are not output to the output terminals 77, 78, 79. It is for.

73 is an input terminal for character signals. This input terminal 73
It becomes an L level signal only when a character signal is supplied to , and this signal gates the data converter 76'l to block the signals input to the input terminals 70, 71, and 72, and also to Transistor TRI, TrL2
, 1 voltage is applied to the resistor 11 connected to the pace of TR3, and the back, green, and red colored signals are simultaneously output to the output terminals 77, 78, and 78. As a result, white characters will be displayed.

Reference numeral 80 is an input terminal for the display surface width (g+j (hereinafter referred to as WG flaw signal) in the water depth direction, which is generated by the data processing unit 5 in FIG. 1. This WG flaw signal is modified as shown in FIG. 3. The shape is 11cm, and the low section is the display surface width in the water depth direction.

74 is an input terminal for an alarm signal. This input terminal 7
The alarm signal inputted to the input terminal 80 is a 4-component signal from which the WG multiplied signal it A N D inputted to the input terminal 80 is taken. Then, when an alarm signal is input to the input terminal 74, the output terminals TRI, TR2, TR3
A voltage is applied to resistors R5, 36, and R7 connected to the zero pace. In this case, arbitrary colored signals that differ by 14 degrees are output to the output terminals 77, 78, and 79 depending on the difference in the points of the resistors R5, R5, and R7.

The alarm signal is generated in the data processing section 5 of FIG. 1 by arithmetic processing of the fishing net information signal i' input from the net mouth fish finder N through the operation panel 6. FIG. 3 is a waveform diagram showing an example of an alarm signal. In FIG. 3, PA indicates an alarm setting area.

Further, the signals PU and PL are signals determined by the Mifrft information signal Pn (ji information signal PU+s, PLs) from the fish finder N. When the alarm (i) having this alarm setting area PA is input to the input terminal 74 in FIG. 2, an alarm display as shown in FIG. It is an echo from a school of fish, and the PA is an alarm setting area.As is clear from this figure.

The brightness of the color cathode ray tube is changed only in the alarm setting area, that is, the opening width of the screen opening.

From this, the positional relationship between the school of fish CF shown in FIG. 1 and the opening width of the fishing net 14 can be easily determined.

Further, when the upper limit setting signal AU and lower limit setting signal ALt of the alarm setting area PA are inputted to the data processing unit 5 by panel operation from the operation panel 6 in FIG. , is created. The alarm signal having this alarm setting area PA1 (see Fig. 3) is transmitted to the alarm signal input terminal 74 in Fig. 2.
When inputted, this alarm setting area PA.

(See FIG. 4), the background color (background color/ton) is slightly different from other locations. Therefore, as is clear from FIG. 4.

The echo F from the fish school and the echo 43 from the seabed B can be distinguished from the alarm setting area PA. In the figure, 41 is the oscillation d of the ultrasonic pulse (regarded as a sea level wave), AU is the alarm i for setting the upper limit of the alarm setting area PA, and AL is the alarm line for setting the lower limit.

In addition, the lower limit setting signal (alarm 41AL) in the alarm setting area PA is moved to the upper limit setting signal (alarm signal moved toward the upper part of the alarm AU, that is, in the direction of the issuing line 41 shown in FIG. 4). When the phone is input to the alarm signal input terminal 74 in Fig. 2, the WQ double signal (see Fig. 3) and the A
By taking the ND, the signal waveform becomes a waveform as shown in FIG. As is clear from the waveform in FIG. 3, in this case, there are three low sections, that is, alarm setting areas PA2.

The alarm display displayed on the display section 8 at this time is as shown in FIG. As is clear from this figure, one oscillation a!
51 and the lower limit setting alarm line AL is on one side (upper side)
The area PA2 is the alarm setting area PA2, and the area up to the lower edge of the alarm signal alarm line display screen for upper limit setting is the other (
This is the alarm setting area PA2 at the bottom. In this example, it is checked whether the seabed B is within the upper alarm setting area PA2. It can also be used as a so-called shermy alarm. or.

By setting the lower alarm setting area PA"2 to an arbitrary depth, it is possible to easily determine whether the ship is located at the desired depth.

In any of the above cases, if the target enters the alarm setting area, an alarm ■ will be generated.
Of course, it is marked &CL.

(Effects of the Invention) As is clear from the above description, the alarm display device in the color fish finder according to the present invention modulates the brightness of the alarm setting area on the two display surfaces. If the alarm setting area can be clearly distinguished from other areas and is very easy to understand, there will be a 5 effect.

or.

By linking it with a net-mouth fish finder, a fishing net water depth display device, etc., it has the advantage of making the fish finder even more effective.

[Brief explanation of drawings]

FIG. 1 is a schematic block diagram showing one embodiment of an alarm display device in a color fish finder according to the present invention, and FIG. 2 is a circuit diagram showing a specific example of a D/A converter in the device of the present invention. 3 is a signal waveform diagram of each part, FIG. 4 is a diagram showing an example of an alarm display by the device of the present invention, FIG. 5 is a diagram showing another example of an alarm display, and FIG. 6 is a diagram showing a conventional alarm display. FIG. 7 is a diagram showing an example of the display, and is a diagram showing another example of the conventional alarm display. l... Transducer/receiver, 9... Receiver, 12... Trawler. 13. Rope, 14.. Fishing net, 70-72.. Fish school report input terminal, 74.. Alarm signal input terminal, 76..
・Data converter, 77-79...coloring signal output terminal,
80...Display surface IM double signal WG signal in water depth direction], N
...Amiguchi I (L-search) Pn...Super-Korean Information Igo issue.

Claims (1)

[Claims] A data processing unit that outputs a fish school information signal, an alarm signal, and a display surface width signal in the water depth direction, a D/A converter that is driven under the control of the output signal of the data processing unit, and an output signal of the D/A converter. The D/A converter includes a data converter and a drive circuit for the three primary colors of the color fishfinder, and each of the three primary colors is connected to the drive circuit. Weighted resistors are provided to modulate the brightness of the color signal, and the weighted resistors are subjected to an AND output of the fish school information output from the data converter, the alarm signal, and the display surface width signal in the water depth direction. 1. An alarm display device for a color fish finder, characterized in that the alarm setting area of the display screen of the display unit is modulated by brightness.