JP2014190787A - Fish detection system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a fish detection system which allows for accurately and effectively finding locations of schools of fish and thus improving fishing results.SOLUTION: A fish detection system allows an image display unit 16 of a main boat detection device to selectively display either or both of a main boat display window 31a which presents echo information acquired by a transceiver of the main boat detection device and a boat information display window 31b which presents echo information acquired by a transceiver on a remotely controlled model boat, which enables appropriate use of the two sets of echo information, making it easier to effectively and accurately identify locations of schools of fish and thus improve fishing results thereby.

Description

  The present invention relates to a fish school detection apparatus that transmits ultrasonic waves into water and detects a school of fish and a bottom of the water using the echo waves.

  Fish detectors that transmit ultrasonic waves and detect a school of fish by their echo waves are well known, and the fish detector is attached to a fishing boat. Then, the fish can be expected to be improved by moving the boat while searching for the school of fish with this fish finder and fishing at the point where the school of fish is found (for example, Patent Document 1).

JP 2008-224501 A

  By the way, since the ultrasonic waves of the fish finder described above have directivity, the detection range is only a limited range directly under the own ship, so I searched the point by moving my ship Move your ship to the point and fish. Here, since the detection range of the fish finder is limited as described above, it is difficult to operate the boat so that the fishing line can be accurately hung at the point detected by the fish finder. Part that depends on experience is also large. In addition, since boats generally cannot make small turns, it is difficult to accurately check the point even if it can be operated near the point, for example, there may be a relatively large difference in fishing results on both sides of the ship. is there. Furthermore, since it is not possible to make a small turn, it may be difficult to move following the movement of the school of fish. Once the school of fish is lost, it becomes necessary to search for the school of fish by moving the boat based on the experience and feeling of the operator.

  The present invention is an attempt to solve the above-described problems, and proposes a fish finder capable of detecting fish points easily and accurately and improving fishing results.

  The present invention is mounted on a ship, and includes a transducer that transmits ultrasonic waves into water and receives echo waves reflected from a school of fish or the bottom of the water, and an echo wave that is received by the transducer. Detection information storage means for storing the echo wave information based on time series, an image display device having an echo wave display area on a display screen, and the image display device for displaying the echo wave information stored in the detection information storage means A ship detection device having information display control means for controlling display in the echo wave display area, signal receiving means for receiving a remote operation signal, and driving for performing propulsion control and steering control of the boat according to the remote operation signal A model boat that can be remotely operated wirelessly or by wire, an operation input means for inputting a remote operation signal for straightening or turning the model boat, and the remote operation signal as signal receiving means for the model boat Send to Signal transmission means, and a remote control device for remotely operating the model boat from the ship, the model boat transmitting ultrasonic waves into the water and reflecting it at the school of fish or the bottom of the water A transmitter / receiver for receiving an echo wave, and information transmitting means for transmitting echo wave information based on the echo wave received by the transmitter / receiver wirelessly or by wire, wherein the ship detecting device is information on a model boat An information receiving means for receiving the echo wave information transmitted from the transmitting means; and a boat information storage means for storing the echo wave information received by the information receiving means in a time series. In the echo wave display area of the display, a vessel information display window for displaying the vessel's echo wave information stored in the detection information storage means, and a button for displaying the model boat's echo wave information stored in the boat information storage means. A fish finder device, characterized in that either or both of the bets information display window is obtained with a display switching means for selectively displaying.

  In such a configuration, in the navigation area of the ship, search for the school of fish by the echo information displayed in the ship information display window, move the model boat near the found point, remotely control the model boat, and display it in the boat information display window The position of the school of fish can be pinpointed by the reflected echo information. Thus, since it is easy to find a fish school position correctly, since a fishing line can be hung on the point of this fish school, a big improvement of a fishing result can be anticipated and this improvement effect can be exhibited stably. That is, according to the present invention, it is possible to search and narrow down the points of the fish school while navigating with the ship detection device, and after maneuvering to the vicinity of the point, the position of the fish school can be found accurately and efficiently by the model boat. Easy to do. Therefore, even if the skill and experience of the operator are not sufficient, it is easy to stably find the points of the school of fish, and the effect of improving the fishing results can be obtained. Here, the image display can switch and display the vessel's echo wave information and the model boat's echo wave information, and can display both at the same time. Easy to grasp. In addition, when a school of fish moves, it is possible to track the school of fish relatively easily by maneuvering the ship with a model boat following the school of fish.

  In addition, since the echo wave information of the model boat is displayed using the image display of the ship detection device and the information display control means, an image display etc. for displaying the echo information of the model boat is provided. Compared to the configuration provided separately from the detection device, the number of components is small, and the total weight can be reduced. As a result, it is possible to reduce the burden required for the work of mounting the fish finder of the present invention on the ship and the preparation work before departure, and the workability when handling on the ship is improved. In particular, when mounted on a small boat, the mounting space can be reduced, so that its usefulness is easily exhibited. Further, since the number of component devices is reduced, there is an advantage that maintenance work and cost can be reduced.

  In the configuration of the present invention, as the display switching means, it is preferable that the operator can arbitrarily select and switch either one or both of the ship information display window and the boat information display window. There is a preferred configuration having an operable switching switch. Further, the display switching means may be either a configuration that switches in software or a configuration that switches in hardware.

  In the fish finder according to the present invention described above, the transmitter / receiver of the model boat is configured such that the frequency of the ultrasonic wave to be transmitted is equal to or higher than the frequency of the ultrasonic wave transmitted by the transducer of the ship detector. A configuration is proposed.

  In general, since a low-frequency ultrasonic wave is easy to spread, a relatively wide range can be detected, and a high-frequency ultrasonic wave has a narrow detection range, so it is easy to specify a detection point, and The resolution also increases.

  According to the present configuration, a fish is searched for in a sea area by narrowing a point by detecting a relatively wide range using the ship's transducer, and a precise range is detected by detecting a relatively narrow range using the model boat's transducer near the point. Important points can be identified. In this way, detection can be performed by utilizing the characteristics of high frequency ultrasonic waves and low frequency ultrasonic waves, so that it is easy to efficiently and accurately specify the point at which the fishing line is hung, and relatively easily An improvement effect can be obtained. In particular, in this configuration, the echo wave information of the ship that has detected a relatively wide area and the echo wave information of the model boat that has detected a relatively narrow area can be displayed on the image display at the same time or by switching. While detecting a school of fish based on information, it is possible to efficiently identify an accurate point using a model boat.

  In the fish finder according to the present invention described above, a configuration is proposed in which the remote control device includes a reel that winds up a collection line of a predetermined length connected to a model boat.

  Here, a configuration in which the reel can be converted into a state in which the collection line is freely unwound and a state in which unwinding is restricted can be suitably used. In the state where the unwinding is free, the model boat can be operated freely within a predetermined length of the recovery line, and in the state where the unwinding is restricted, the model boat can be operated within the action range of the restricted length. The reel may be either an automatic winding type or a manual winding type, but a manual winding type can be suitably used in view of simplification of the structure, weight reduction, and the like.

  In such a configuration, for example, when the model boat becomes inoperable due to a power source drop during operation of the model boat, or when the model boat is lost due to exposure to waves, etc., the reel is rotated. The model boat can be recovered by. Thereby, since the model boat can be operated with peace of mind even offshore, the above-described effects can be exhibited by exploring the school of fish.

  According to the fish finder of the present invention, it is easy to identify fish points efficiently and accurately by using the ship's echo information and the model boat's echo information as appropriate. The burden of searching for the point can be reduced. In particular, it is easy to pinpoint the position of the school of fish with respect to the main boat by detecting the school of fish with a model boat, so that the point at which the fishing line is hung can be found accurately, and the above-mentioned effect of improving the fishing results is easily exhibited. In addition, since the echo wave information of the model boat is displayed using the image display and information display control means of the ship detection device, the number of components is small and the total weight can be reduced. Can be reduced, and maintenance work and cost can be reduced.

1 is an explanatory diagram of a fish finder 1. 3 is a block diagram showing a control circuit of the fish finder 1. FIG. It is explanatory drawing which shows the image display device 16 of the ship detection apparatus 2. FIG. It is explanatory drawing which shows the model boat 3 and the remote control machine 4. FIG. It is explanatory drawing which shows (A) ship display mode and (B) boat display mode of the echo wave display area 31. FIG. It is explanatory drawing which shows the simultaneous display mode of the echo wave display area | region 31. FIG. It is explanatory drawing which illustrates the detection ranges X and Y of the fish finder 1.

Embodiments according to the present invention will be described with reference to the accompanying drawings.
FIG. 1 shows a main boat detection device 2, a model boat 3, and a remote control device 4 constituting a fish detection device 1 of the present embodiment. Here, the ship detection device 2 is mounted on the ship 10, and the remote controller 4 remotely controls the model boat 3 from the ship 10. The model boat 3 is mounted on the ship 10 and is used after being taken down from the ship 10 in a predetermined sea area. The model boat 3 according to the present embodiment is a radio controlled boat that is remotely operated wirelessly by the remote controller 4.

  FIG. 2 is a block diagram showing a control circuit of the fish finder 1 described above. The ship detection device 2 includes a transducer 11, a transmission / reception processing circuit 12, a main control circuit 13, an information communication master unit 14, a display control circuit 15, and an image display 16. The model boat 3 includes a transducer 41, a transmission / reception processing circuit 42, an information communication slave device 43, a power supply device 44, a drive device 45, a drive control circuit 46, and an operation signal receiver 47. The remote controller 4 includes an operation input device 71, an operation signal transmitter 72, and a power supply device 78.

  The main control circuit 13 of the ship detection device 2 comprises a microcomputer provided with a central processing unit (CPU) 21. The central processing unit 21 has a measurement information memory (RAM) for reading and writing measurement information. 23) are connected via a data bus (not shown) for exchanging data. The central processing unit 21 is also connected with a program memory (ROM) 25 in which programs for executing various controls are stored. The main control circuit 13 is provided with a time measuring device 26, and time information is transmitted from the time measuring device 26 to the central processing unit 21 as needed.

  The main control circuit 13 is provided with an input port (not shown) and an output port (not shown), and the transmission / reception processing circuit 12 is connected through these ports, and the transmission / reception processing circuit 12 transmits / receives signals. A waver 11 is connected. The transmitter / receiver 11 includes a transmitting / receiving element that transmits (transmits) an ultrasonic wave and receives (receives) an echo wave thereof, and is attached to the bottom of the boat toward the water. When a predetermined command signal is input from the main control circuit 13, the transmission / reception processing circuit 12 transmits an ultrasonic pulse from the transmitter / receiver 11 into water. When the transmitter / receiver 11 receives the echo reflected from the school of fish or the bottom of the water (the sea floor), the transmitter / receiver processing circuit 12 converts the information of the echo (received timing, received intensity, etc.) into a digital signal. Then, it is transmitted to the main control circuit 13 as echo wave information.

  When the main control circuit 13 receives the echo information from the transmission / reception processing circuit 12, the central processing unit 21 associates the echo information with the time information transmitted from the time measuring device 26 as a set, and stores the measurement information memory 23. To remember. Here, the measurement information memory 23 stores a vessel information storage area for storing the echo wave information received from the transmission / reception processing circuit 12 of the vessel detector 2 and an echo wave information received from the model boat 3 described later. And a boat information storage area. The capacities of these storage areas are determined, respectively. When data exceeding the capacity is stored, old echo information is sequentially deleted and new echo information is stored.

  A display control circuit 15 is connected to the output port of the main control circuit 13, and an image display 16 is connected to the display control circuit 15. The image display 16 includes a rectangular display screen 30 (see FIG. 3), and is configured by a TFT, LCD, CRT, or the like.

  The central processing unit 21 of the main control circuit 13 generates image data according to the echo information stored in the measurement information memory 23, further generates display screen information from the image data, and transmits it to the display control circuit 15 described above. . When receiving the display screen information from the central processing unit 21, the display control circuit 15 converts the display screen information into an appropriate video signal and transmits it to the image display 16. The display of the echo wave information on the image display 16 is a main part of the present invention, and details will be described later.

  In addition, a key operation unit 27 for an operator to input various settings is connected to the input port of the main control circuit 13 described above. The key operation unit 27 includes a pointing device and a plurality of buttons, and the operator can change the display mode of the image display 16 and various display settings by operating these buttons. Further, by operating a predetermined key of the key operation unit 27, a predetermined command signal is transmitted from the main control circuit 13 to the transmission / reception processing circuit 12, and an ultrasonic wave is transmitted from the transmitter / receiver 11 along with the command signal. Send a wave.

  Further, in this embodiment, a GPS antenna 61 and a GPS arithmetic circuit 62 are provided. Based on a signal received by the GPS antenna 61, the position information of the ship specified by the longitude and latitude by the GPS arithmetic circuit 62 is provided. Is detected, and the detected ship position information is transmitted to the main control circuit 13 described above. The main control circuit 13 further stores the ship position information received from the GPS arithmetic circuit 62 in the ship information storage area of the measurement information memory 23 in association with a set of information of the above-described echo wave information and time information. . The main control circuit 13 is also provided with a map information memory 24. In the map information memory 24, 2D map information or 3D map information with coastlines and contour lines in the territorial sea area is stored as vector data. ing.

  In the present embodiment, the main control circuit 13 and the measurement information memory 23 (ship information storage area) constitute the detection information storage means according to the present invention. The main control circuit 13 and the display control circuit 15 The display control means in the present invention is configured.

  On the other hand, as shown in FIG. 4, the remote controller 4 includes operation buttons 75 a to 75 c that can be operated by an operator. The model boat 3 is moved straight in a right turn, according to the operation of the operation buttons 75 a to 75 c, A remote operation signal indicating a command for turning left is transmitted. Here, when the operation button 75a is pressed, a straight-ahead remote operation signal is transmitted, and when the operation button 75b is pressed, a right-turn remote operation signal is transmitted. When the operation button 75c is pressed, a remote operation signal for turning left is output and transmitted. These operation buttons 75a to 75c constitute the operation input device 71 (see FIG. 2).

  As shown in FIG. 2, an operation antenna 77 is connected to the operation input device 71 via a signal conversion circuit 76, and the operation signal transmitter 72 described above is connected by the signal conversion circuit 76 and the operation antenna 77. It is configured. When the remote operation signal is received from the operation input device 71 as described above, the remote operation signal is converted into a radio communication radio wave by the signal conversion circuit 76, and the radio wave is transmitted from the operation antenna 77.

  The remote controller 4 is provided with a power supply device 78 to which a predetermined battery (battery) can be attached and detached. The power supply device 78 is provided with a power button 79 (see FIG. 4) for each device such as the operation input device 71 described above. ) To supply power to each device. Then, the power button 79 is turned ON / OFF to convert the power supply state to the power supply state.

  In this embodiment, the operation input device 71 according to the present invention is configured by the operation input device 71 described above, and the signal transmission unit according to the present invention is configured by the operation signal transmitter 72 described above. Yes.

  On the other hand, the model boat 3 includes an operation antenna 50 for receiving radio waves transmitted from the operation antenna 77 of the remote controller 4 and a signal receiving circuit 51 connected to the operation antenna 50. An operation signal receiver 47 configured is provided. Here, when the signal receiving circuit 51 receives the radio wave transmitted from the remote controller 4 via the operation antenna 50, the signal receiving circuit 51 converts the radio wave into a remote operation signal and transmits the remote operation signal to the drive control circuit 46. Send. The drive control circuit 46 controls the drive of the drive device 45 in accordance with the input remote operation signal.

  The driving device 45 includes two motors (not shown) arranged in parallel at positions symmetrical with respect to the center line in the boat longitudinal direction, and screws attached to the tip portions of the driving shafts of the motors. (Not shown). Here, the left and right motors are respectively disposed such that the respective drive shafts are inclined downward and parallel to the rear along the center line. Such a driving device 45 generates a propulsive force that causes the model boat 3 to go straight by rotating the left and right motors at the same rotational speed, and turns left by rotating the right motor at a higher rotational speed than the left motor. The left motor can be turned to the right by rotating at a higher rotational speed than the right motor.

  A power supply device 44 mounted on the model boat 3 is connected to each motor of the drive device 45 via the drive control circuit 46 described above. When the drive control circuit 46 receives the remote operation signal from the signal receiving circuit 51, the drive control circuit 46 performs control to adjust the amount of power supplied from the power supply device 44 to the motor of the drive device 45 in accordance with the remote operation signal. The left and right motors are driven and controlled by this electric energy adjustment control. For example, when the remote operation signal is a straight-ahead command, the same amount of power is supplied to the left and right motors, thereby causing the model boat 3 to go straight. If the remote control signal is a right turn command, the model boat 3 is turned right by increasing the amount of power supplied to the left motor as compared with the amount of power supplied to the right motor. If the remote control signal is a left turn command, the model boat 3 is turned left by increasing the amount of power supplied to the right motor compared to the amount of power supplied to the left motor. In this way, propulsion control and steering control of the model boat 3 are performed.

  The power supply device 44 includes a battery case 55 to which a predetermined battery (battery) can be attached and detached, and a power switch 56 (see FIG. 4), and is driven by an ON / OFF operation of the power switch 56. It converts into the state which supplies electric power to each apparatus, such as the control circuit 46, and the state which does not supply. Further, the battery case 55 has a waterproof function that prevents the attached battery from getting wet.

  In this embodiment, the operation signal receiver 47 constitutes the signal receiving means according to the present invention, and the drive control circuit 46 and the drive device 45 constitute the drive control according to the present invention. Means are configured.

Next, the main part of the present invention will be described.
As shown in FIG. 2, the model boat 3 includes a transmitter / receiver 41 including a transmitting / receiving element that transmits (transmits) ultrasonic waves and receives (receives) the echo waves. It is arranged so that it can transmit ultrasonic waves and receive echo waves downward. The transmitter / receiver 41 is connected to a transmission / reception processing circuit 42, and the transmission / reception processing circuit 42 is connected to an information communication handset 43. Here, the transmitter / receiver 41 transmits an ultrasonic pulse of a predetermined wavelength into the water according to the command signal input from the transmission / reception processing circuit 42. When the transmitter / receiver 41 receives an echo wave reflected from a school of fish or the seabed, the transmitter / receiver processing circuit 42 converts the information on the echo wave (received timing, received wave intensity, etc.) into a digital signal. Information is output to the information communication handset 43. The information communication handset 43 includes a signal conversion circuit 65 and an information antenna 66. When receiving the echo wave information from the transmission / reception wave processing circuit 42, the signal communication circuit 65 converts the echo wave information into a radio communication radio wave. And the radio wave is transmitted from the information antenna 66.

  When the information antenna 66 of the model boat 3 receives a radio wave transmitted from the information communication master unit 14 of the ship detection device 2, the information antenna 66 converts the radio wave into a command signal by the signal conversion circuit 65, and transmits and receives the wave processing circuit 42. Send to. When the transmission / reception processing circuit 42 receives this command signal, an ultrasonic pulse is transmitted from the transmitter / receiver 41 as described above.

  In this embodiment, the information communication slave unit 43 constitutes an information transmission unit according to the present invention.

  On the other hand, an information communication master unit 14 is connected to the main control circuit 13 in the ship detection device 2. The information communication base unit 14 includes a signal conversion circuit 28 and a communication antenna 29. When the communication antenna 29 receives the radio wave transmitted from the information antenna 66 of the model boat 3 described above, the signal conversion circuit 28 converts the radio wave into a signal of echo wave information and transmits it to the main control circuit 13. . When the main control circuit 13 receives the echo wave information from the information communication master device 14, the echo wave information and the time information of the time measuring device 26 are associated with each other and stored in the boat information storage area of the measurement information memory 23.

  The main control circuit 13 transmits a predetermined command signal to the information communication master unit 14 when the predetermined key of the key operation unit 27 is operated. This command signal is converted into a radio communication radio wave by the signal conversion circuit 28 of the information communication master unit 14 and transmitted from the communication antenna 29. When the radio wave is received by the information antenna 66 of the model boat 3, the ultrasonic wave is transmitted from the transducer 41 of the model boat 3 as described above.

  Further, in the fish finder 1 of the present embodiment, the transducer elements provided in the transducer 41 of the model boat 3 are the transducer elements disposed in the transducer 11 of the ship detector 2. In contrast, high-frequency ultrasonic waves are oscillated. Specifically, the transducer 11 of the ship detection device 2 is provided with a transducer element for transmitting ultrasonic waves having a frequency of 50 kHz, and the transducer 41 of the model boat 3 is equipped with a 200 kHz transducer. A transmitting / receiving element that transmits ultrasonic waves of a frequency is provided. Thereby, the ultrasonic wave transmitted from the transducer 11 of the ship detection device 2 has a relatively wide directivity angle and can detect a wide detection range X as shown in FIG. On the other hand, the ultrasonic wave transmitted from the transducer 41 of the model boat 3 has the advantage that the directivity angle is narrow and the detection range Y is narrower than that of the ship detection device 2, but the resolution is high. .

  In the present embodiment, the information communication master unit 14 constitutes an information receiving means according to the present invention. The main control circuit 13 and the measurement information memory 23 (boat information storage area) The boat information storage means according to the invention is configured.

Next, control processing for displaying echo wave information on the image display 16 of the ship detection device 2 will be described.
As described above, the main control circuit 13 of the ship detection device 2 converts the echo information stored in the measurement information memory 23 into an appropriate video signal, and performs display control on the image display 16 as shown in FIG. To do. On the display screen 30 of the image display 16, an echo wave display area 31 for visually displaying echo wave information and a ship position display area 32 for visually displaying a ship route image are set. In the echo wave display area 31 and the ship position display area 32, the size of each area can be appropriately changed by the operation of the key operation unit 27 described above, and only one of them can be displayed. The ship position display area 32 displays a ship route image generated by combining the ship position information and the map information stored in the map information memory. Since the processing conventionally used can be applied to this route image display processing, details thereof are omitted.

  In the echo wave display area 31, a ship information display window 31a and a boat information display window 31b can be displayed, and a ship display mode for displaying only the ship information display window 31a (see FIG. 5A). ), A boat display mode for displaying only the boat information display window 31b (see FIG. 5B), and a simultaneous display mode for displaying the ship information display window 31a and the boat information display window 31b side by side (see FIG. 6). The display can be converted. Such switching of the display mode is selectively executed when the operator switches the changeover switch 39 provided in the key operation unit 27 described above.

  Here, the ship information display window 31a visualizes the echo information of the ship 10 stored in the ship information storage area of the measurement information memory 23 as shown in FIGS. An echo wave image 33a to be displayed in series is displayed. That is, the vessel wave information display window 31a displays the echo wave information of the vessel 10. The echo wave image 33a of the ship 10 is an image in which visualized echo wave information is arranged in the order measured in the horizontal direction, and newer echo wave information is on the right side and older echo wave information is on the left side. Thus, the echo wave information is displayed in time series. The vertical axis of this window 31a indicates the depth of water reflected by the ultrasonic waves, and the intensity of the echo wave is displayed by color and shade. In such an echo wave image 33a, the echo wave information continuously displayed in the width direction is the sea bottom echo 34 reflected from the sea bottom, and the echo wave information displayed in a lump above the sea bottom echo 34 is A fish echo 35 reflected by the fish school.

  Similarly, the boat information display window 31b visualizes the time-series display of the echo information of the model boat 3 stored in the boat information storage area of the measurement information memory 23, as shown in FIGS. An echo wave image 33b is displayed. That is, echo information of the model boat 3 is displayed in the boat information display window 31b. The echo wave image 33b of the model boat 3 is also an image in which visualized echo wave information is arranged in the order of measurement along the horizontal direction, so that newer echo wave information is on the right side and older echo wave information is on the left side. The echo wave information is displayed in time series. The vertical axis indicates the water depth, and the intensity of the echo wave is displayed by color and shading. Even in the echo wave image 33b, the seabed echo 34 and the fish school echo 35 are displayed.

  The vessel information display window 31a and the boat information display window 31b are displayed and switched by the changeover switch 39 of the key operation unit 27 as described above. That is, when the ship display mode is selected by the changeover switch 39, the main control circuit 13 reads the echo wave information of the ship 10 stored in the ship information storage area of the measurement information memory 23, and FIG. As shown, the echo wave image 33 a based on the echo wave information is displayed in the entire echo wave display area 31 of the image display 16. When the boat display mode is selected by the changeover switch 39, the echo wave information of the model boat 3 stored in the boat information storage area of the measurement information memory 23 is read, and as shown in FIG. The echo wave image 33 b based on the echo wave information is displayed in the entire echo wave display area 31 of the image display 16. Furthermore, when the simultaneous display mode is selected by the changeover switch 39, the ship's echo wave information and the model boat 3's echo wave information are read from the measurement information memory 23, and as shown in FIG. The vessel information display window 31a for displaying the echo wave image 33a and the echo wave image 33b of the model boat 3 are simultaneously displayed in the echo wave display area 31 of the image display 16 in the boat information display window 31b. In this case, the echo wave display area 31 is divided into a main vessel information display window 31a and a boat information display window 31b so as to be divided into upper and lower parts and displayed respectively.

  Since the echo wave image 33a of the ship 10 displayed in the ship information display window 31a is based on the echo wave information of an ultrasonic wave having a frequency of 50 kHz as described above, a relatively wide detection range according to the directivity angle of the ultrasonic wave. Echo wave information at X (see FIG. 7) is shown. Therefore, it can be used together with the above-described track image of the ship position display area 32 as shown in FIG. 3 to narrow down the points in the sea area where the ship navigates. On the other hand, the echo wave image 33b of the model boat 3 displayed on the boat information display window 31b is based on the echo wave information of the ultrasonic wave of 200 kHz as described above, and has a relatively narrow detection range Y (immediately below the model boat 3 ( FIG. 7 shows echo wave information. By utilizing these echo wave information, the model boat 3 is remotely operated to navigate near the point narrowed down by the echo wave image 33a of the ship information display window 31a as described above, and the echo wave information is acquired. It is possible to pinpoint the location of the school of fish. This is achieved by mounting the ship detection device 2 that detects a relatively wide detection range X on the ship 10 and by remotely operating the model boat 3 that can detect a narrow detection range Y and can make a small turn, and navigates efficiently. It is easy to find the position of the school of fish accurately and stably.

  Further, as shown in FIGS. 5 and 6, the fish finder 1 uses the image display 16 of the ship finder 2 to transmit the echo information (echo wave 33a) of the ship 10 and the echo information (echo wave) of the model boat 3. The image 33b) can be arbitrarily switched and displayed by the operator. As a result, the operator can search for a point while comparing the echo wave information of the ship 10 and the echo wave information of the model boat 3 by switching according to his / her convenience. It is easy to make a decision, and the points can be searched efficiently.

  Furthermore, according to the fish finder 1 of this embodiment, the echo information acquired by the model boat 3 is displayed by the main control circuit 13 and the image display 16 of the ship finder 2. For the display control of the echo wave information of the model boat 3, the main control circuit 13 and the image display 16 for controlling the display of the echo wave information of the ship are used. Therefore, compared to a configuration in which an image display or the like that displays only the echo wave information of the model boat is separately provided, no component equipment such as the image display is required, so that maintenance work and maintenance costs required for this are reduced. This can be omitted, and an overall cost reduction effect can be obtained. Furthermore, since the effect of reducing the weight is produced by reducing the number of components, the burden required for the work to be mounted on the boat and the preparation work before departure can be reduced, and the handling on the ship becomes easy. In particular, when the fish finder 1 of the present embodiment is used in a relatively small boat, the benefits of improving the ease of use are great due to the reduction in the number of components and the weight reduction. Further, if the remote controller has an image display for displaying the echo wave information of the model boat, the remote controller becomes heavy due to the image display and its processing circuit. Compared to this configuration, in the configuration of the present embodiment, the weight of the remote controller 4 is reduced, so that the burden required for carrying and operating the remote controller 4 on an unstable ship can be reduced.

  Further, as shown in FIG. 4, the remote controller 4 is provided with a reel 81 around which a collection line 80 having a predetermined length is wound. The reel 81 is a manual type provided with a handle 82, and is freely arranged to rotate. The reel 81 can wind the collection line 80 by rotating the handle 82 in one direction, and can freely pull out the collection line 80 when the handle 82 is operable. The reel 81 is provided with a guide member 83 for pulling the collection line 80 upward from the remote controller 4. Since such a reel 81 having a configuration conventionally used can be applied, details thereof are omitted.

  A hook piece 85 is attached to the tip of the recovery line 80, and the hook piece 85 can be attached to and detached from a connecting projection 86 provided at the rear part of the model boat 3. When the model boat 3 is operated at sea with the hook piece 85 connected to the connection protrusion 86 of the model boat 3, the reel 81 is manually rotated to wind up the recovery line 80, whereby the model boat 3 is wound. Can be reliably recovered. A fishing line, a string, or the like can be applied to the recovery line.

  In this embodiment, the changeover switch of the key operation unit 27, the main control circuit 13, and the display control circuit 15 constitute display switching means according to the present invention.

  In the configuration of this embodiment described above, the transmitter / receiver 11 of the ship transmits ultrasonic waves with a frequency of 50 kHz, and the transmitter / receiver 41 of the model boat 3 transmits ultrasonic waves with a frequency of 200 kHz. However, it is also possible to apply the transducers 11 and 41 including the transducer elements that oscillate ultrasonic waves having a frequency different from that of the present embodiment. Here, by making the ultrasonic wave oscillated by the transducer 41 of the model boat 3 higher than the frequency of the ultrasonic wave oscillated by the transducer 11 of the ship, the same effect as the above-described embodiment is obtained. Play. Further, the transducer 41 of the model boat 3 and the transducer 11 of the ship may oscillate ultrasonic waves having the same frequency.

  In this invention, it is not limited to the Example mentioned above, About the structure other than the above-mentioned Example, it can change and implement suitably within the range of the meaning of this invention. For example, the model boat may not be wireless, but may be remotely operated by wire, and further configured to transmit echo wave information from the model boat to the ship detection device by wire. Also good. In the case of such a wired system, since a signal line for sending a signal is necessary, this signal line can be used as a recovery line for a model boat.

DESCRIPTION OF SYMBOLS 1 Fish detection apparatus 2 Vessel detection apparatus 3 Model boat 4 Remote control machine 10 Vessel 11 Transmitter / receiver 16 Image display 31 Echo wave display area 31a Vessel information display window 31b Boat information display window 41 Transmitter / receiver 80 Recovery line 81 Reel

Claims (3)

A transmitter / receiver that is installed on the ship and that receives ultrasonic waves reflected in the school of fish or the bottom of the water by transmitting ultrasonic waves into the water, and echo wave information based on the echo waves received by the transmitter / receiver Detection information storage means for storing the information in time series, an image display having an echo wave display area on the display screen, and echo wave information stored in the detection information storage means for displaying the echo wave of the image display A ship detection device provided with information display control means for controlling display in the area;
A signal receiving means for receiving a remote operation signal; and a drive control means for performing propulsion control and steering control of the boat in accordance with the remote operation signal;
An operation input means for inputting a remote operation signal for making the model boat go straight or turn, and a signal transmission means for transmitting the remote operation signal to the signal receiving means of the model boat, and remotely operating the model boat from the ship With a remote control device for
The model boat is configured to transmit an ultrasonic wave underwater and receive an echo wave reflected from a school of fish or the bottom of the water, and wirelessly or wiredly transmit echo wave information based on the echo wave received by the transmitter / receiver. Information transmission means for transmitting by
The ship detection device includes information receiving means for receiving the echo wave information transmitted from the model boat information transmitting means, and boat information storage means for storing the echo wave information received by the information receiving means in time series. The information display control means includes a ship information display window for displaying the ship's echo information stored in the detection information storage means in the echo display area of the image display, and a model boat stored in the boat information storage means. A fish school detecting device comprising a display switching means for selectively displaying either or both of a boat information display window for displaying echo wave information.   2. The fish school according to claim 1, wherein the transmitter / receiver of the model boat has a frequency of ultrasonic waves to be transmitted that is equal to or higher than a frequency of ultrasonic waves transmitted by the transmitter / receiver of the ship detection device. Detecting device.   The fish finder according to claim 1 or 2, wherein the remote control device includes a reel that winds a recovery line of a predetermined length connected to the model boat.

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