JPH1031071A - Underwater detector - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an underwater detector applicable to fishing such as fishing from rocks near the shore by emitting an ultrasonic wave from the tip of a rod into the water, catching the reflected wave, and displaying signs of fish and the sea bottom on a display screen on the basis of the received signal and the angle signal from an azimuth sensor. SOLUTION: An underwater detector body 1 is mounted on the handle part 31 of a rod 30, a display device 2 is provided on the upper part thereof, and a CPU and an azimuth sensor 20 are built therein. A disc float 11 is mounted on the tip of the rod 30, and a support cord having an ultrasonic transmitter-receiver 15 fixed thereto is passed through a through-hole 12 in the center of the float 11. An ultrasonic wave is transmitted in the sea bottom direction to receive the reflected wave by the transmitter-receiver 15, and the underwater depth of a reflected object such as signs of fish or sea bottom is detected by the time difference. This output signal is caught by a receiver 18 through a radio transmitter 16 within the transmitter-receiver 15, data processed in the CPU, and displayed on the display device 2. The azimuth sensor 20 is connected to the CPU through an A/D converter to judge the direction of the rod 30. Thus, underwater information can be easily grasped, and the fishing result can be improved.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a method of directly mounting on a pole,
The present invention relates to an underwater detector capable of capturing underwater information near the tip of the rod.

[0002]

2. Description of the Related Art As an underwater detector, a fish detector capable of detecting underwater information with an ultrasonic transducer and the like, displaying a seafloor image on a display screen, and searching for a school of fish or a seafloor topography is known. Various offerings. By the way, in the conventional fish finder, the horizontal axis of the display screen indicates time, and the vertical axis indicates depth, and the underwater information that changes with time as the ship sails is displayed on the display screen.

[0003]

On the other hand, in the above-mentioned conventional fish finder, information is displayed on a display screen in accordance with a time change accompanying the navigation of a ship.
It cannot be used exclusively for shore fishing or the like that is used on ships and does not use ships, and there is a need for an underwater detector that can be applied even in such a simple fishing form. An object of the present invention is to solve such a problem.

[0004]

SUMMARY OF THE INVENTION The present invention relates to a detector main body fixed to a hand of a rod, a direction sensor built in the detector main body to detect the direction of the rod, and information from the direction sensor. Angle detection means for detecting the angular displacement of the rod, comprising azimuth signal processing means for converting the angle into the angular displacement of the rod, the inclination angle of the rod, and the underwater depth by vertical and horizontal axes, the angle and the underwater depth A display device with a display screen that displays the underwater image by specifying the position by, and an ultrasonic transducer that is attached to the tip of a rod or a thread, radiates ultrasonic waves into water, and captures reflected waves thereof, Receiving a signal from the ultrasonic transducer, a wired or wireless signal transmitting means for transmitting to the detector main body, a received signal from the ultrasonic transducer, and an angle from the angle detecting means Display screen based on information In-water detector, characterized by comprising an image forming means for generating a water image displayed.

In such a configuration, when the rod is tilted along the water surface, the inclination angle of the rod is detected by the direction sensor, and a fish shadow, a sea bottom, etc. are displayed on the display screen in accordance with the inclination angle. You. At this time, a set key is provided in order to set a reference for the angle of the rod. At the position where this key is turned on, an underwater image of the reference position is displayed at the center of the display screen or the like. The underwater information may be continuously displayed at a predetermined angle position from the position.

Further, a detector main body rotatably supported by the base handle and fixed to the hand of the rod, and a detector built in the detector main body for detecting an angular displacement of the detector main body with respect to the base handle. Angle detection means, the inclination angle of the rod with respect to the base handle, and the depth of the underwater in the vertical and horizontal axes, a display device with a display screen that displays the underwater image by specifying the position by the angle and the underwater depth Attached to the tip or thread of a rod, radiates ultrasonic waves into water and captures reflected waves, and an ultrasonic transducer, and a signal received from the ultrasonic transducer is transmitted to the detector main body. A wired or wireless signal transmitting means for transmitting, a received signal from the ultrasonic transducer, and an image forming means for generating an underwater image displayed on a display screen based on angle information from the angle detecting means. Preparation Underwater detector is proposed.

[0007] In this means, the rod is constructed without using the direction sensor. That is, the rod and the detector main body can be tilted with respect to the base handle, and the angular displacement with respect to the base handle is read by angle detecting means such as a potentiometer (rotary variable resistor), and the display position of the tilt angle axis on the display screen is displayed. Is specified. Incidentally, even in this configuration, the reference position may be determined by the set key. However, in this configuration, the reference positions (0 ° tilt position) of the rod and the detector main body with respect to the base handle can be specified in advance. Here, the ultrasonic transducer includes a configuration in which a transducer is physically separated into a transmitter and a transmitter.

[0008] Further, a detector body fixed to the hand of the rod, a manual designation switch, a display device having a display screen for displaying an underwater image, and an ultrasonic wave attached to the tip or thread of the rod, An ultrasonic transducer that radiates into the water and captures its reflected wave, a signal transmitted from the ultrasonic transducer, a wired or wireless signal transmitting unit that transmits the signal to the detector main body, and a manually designated switch An underwater detector characterized by comprising an image forming means for generating an underwater image displayed on a display screen based on a received signal from the ultrasonic transmitter / receiver for each pressing of the underwater detector. In this configuration, the underwater information at the required position can be easily read.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described with reference to the accompanying drawings. As shown in FIG. 1, the underwater detector according to the present invention includes a detector main body 1, an ultrasonic transducer 15 and the like.

[0010] As shown in FIG.
The display device 2 is provided on the upper part of the handle 31 of the fishing rod 30, and the central controller C
A PU, a direction sensor 20 and the like are built in.

The display device 2 has a rectangular display screen 3. The horizontal axis of the display screen 3 indicates the angle of inclination of the fishing rod 30, and the vertical axis indicates the underwater depth. That is, on the upper and lower edges of the display screen 3, an angle scale 5 engraved at approximately 30 ° in the figure with the center at an inclination of 0 ° and at equal intervals on the left and right is displayed. Edge is 0M, 10M near hand
A depth scale 6 engraved up to is displayed. A power switch 7 and a set key 8 are provided near the display device 2.
And other operation switches.

On the other hand, a disc-shaped float 11 shown in FIG. 3 is fixed to the tip of the fishing rod 30, and a support cord 13 passed through a through hole 12 formed at the center of the float 11 transmits and receives ultrasonic waves. The vessel 15 is fixed. The through hole 12
Through the fishing line, you can enjoy fishing while detecting information in the water. The ultrasonic transducer 15 may be directly fixed to the float 11. Alternatively, an ultrasonic transducer 15 having a floating action may be used.

The ultrasonic transducer 15 has a known structure such as a piezoelectric ultrasonic transducer. The ultrasonic transducer 15 transmits an ultrasonic wave from the lower radiation surface to the sea floor, and transmits the ultrasonic wave to the sea floor. Capture the reflected, reflected waves. That is, an ultrasonic wave is radiated from the ultrasonic transducer 15 to the sea floor, the reflected wave is received, and the underwater depth of a reflecting object such as a fish shadow or the sea floor is detected based on the time difference.

An output signal generated by the captured reflected wave is captured by a receiver 18 (see FIG. 4) in the detector main body 1 by a radio transmitter 16 built in the ultrasonic transducer 15. Then, necessary data processing is performed based on the output signal. And the data processing was done,
The underwater information is displayed on the display screen 3 via the angle detecting means and the image forming means. The angle detecting means and the image forming means are constituted by a central control unit CPU and its peripheral devices as shown in FIG.

That is, the central control unit CPU includes:
The display device 2 is connected via a display RAM and a display control unit.
M and a display control unit constitute an image forming unit.

In the central control unit CPU, a direction sensor 20 converts an analog signal into a digital signal.
It is connected via a D converter 21. This central controller C
The PU constitutes an azimuth signal processing means for converting information from the azimuth sensor 20 into an angular displacement of the rod 30, and further constitutes an angle detection means.

The azimuth sensor 20 generates a sine output or a cos output that changes in accordance with the current azimuth of the ship, and outputs this output via the A / D converter 21 to the central control unit CPU.
And is decoded by the program of the central control unit CPU, and the direction of the rod 30 (detector main body 1) is determined.

The direction sensor 20 is, for example,
As disclosed in JP-A-8-145565 and the like, an orientation sensor, a flux gate sensor, a gyro sensor, and the like, in which a magnet rotates by geomagnetism and a rotation angle of the magnet is detected as a change in magnetic flux by a Hall element, is used. Can be used.

The position information from the azimuth sensor 20 is processed by azimuth signal processing means. Based on the position of the fishing rod 30 when the set key 8 is pressed, the inclination angle of the fishing rod 30 with respect to the reference position is determined. Is calculated.
This azimuth signal processing means is constituted by a central control unit CPU. Further, the transmitting and receiving circuit 16 and the above-mentioned transmitting and receiving device 15 are connected to the central control unit CPU. In addition, a receiver 18 is connected to the central control unit CPU,
As the key input device, the above-described power switch 7, set key 8, and the like are connected. Control program ROM
Also, an arithmetic control RAM is connected.

The display mode of the display screen 3 of the display device 2 will be described in more detail with reference to FIG. The display screen 3 has a width of a unit angle Δθ along the angle scale 5 and is divided into vertically long vertical pixel rows 9 having a length corresponding to the depth scale 6, and each vertical pixel row 9 Underwater information from the sound wave transducer 15 is written. For example, when the ultrasonic transducer 15 is at an angle of NΔθ (N: integer) from the reference position, the N-th vertical pixel row 9 is selected from the center position of the display screen 3 and the ultrasonic transducer 15 is selected. Based on the signal detected by the waver 15, underwater information is plotted at a pixel at a predetermined height position corresponding to the underwater depth position indicated by the depth scale 6 in the vertical pixel row 9. Then, by continuous plotting in the inclination angle direction, underwater information such as the seabed topography x or the fish shadow y is drawn in a vertical sectional shape.

The display of the underwater information is maintained until the next information is input to the vertical pixel row 9 by the storage holding operation of the display RAM. That is, the fishing rod 30
Is tilted, the underwater information is displayed in the vertical pixel column 9 corresponding to the corresponding angle on the display screen 3 while being sequentially rewritten. Accordingly, the user can horizontally display the underwater information on the display screen 3 by swinging the fishing rod 30 in the horizontal direction and scanning the underwater with the ultrasonic transducer 15. For this reason, when a fish shadow is found, the fishing result can be improved by returning the position of the fishing rod 30 based on the position information and hanging the fishing hook at the position. The image control on the display screen 3 is performed by the central control unit CPU, image forming means including a display RAM and a display control unit.

In the above structure, the ultrasonic transducer 1
The signal from 5 is transmitted along the fishing rod 30 by using a wireless signal transmitting means using a transmitter so that the fishing rod 30 can be expanded and contracted or immersed in water without any trouble. By using the signal line described above, a wired signal transmission unit may be applied.

Next, as shown in FIGS. 6 and 7, the inclination angle of the fishing rod 30 is detected by signal processing by the direction sensor 20. As shown in FIGS.
At 0, the detector main body 1 fixed to the handle portion of the fishing rod 30 may be rotatably supported, and the inclination angle with respect to the base handle 40 may be detected to detect the inclination angle of the fishing rod 30. .

That is, a metal fitting 41 for the fishing rod 30 is provided on the lower surface of the detector main body 1 to fix the fishing rod 30 to the detector main body 1, and from the lower surface of the detector main body 1,
The base handle 40 is projected so that the detector main body 1 and the fishing rod 30 fixed to the detector main body 1 can rotate about the base handle 40. Then, the rotation angle NΔθ of the detector main body 1 with respect to the base handle 40 is detected by angle detection means such as a potentiometer (rotary variable resistor) 42. This potentiometer 42 converts the contact position with respect to the resistance line by the relative angular displacement of the detector main body 1, and changes the resistance value according to the change in the contact position.
An angle position of 0 is detected, and the underwater information shown in FIG. 5 is displayed.

In this configuration, the position of the fishing rod 30 at the position where the set key 8 is depressed may be the inclination 0 ° position. However, since the relative position between the base handle 40 and the fishing rod 30 is predetermined, it is set in advance. The zero position is
The position may be a position where the inclination of 0 is 0 °. In addition, in the present embodiment, the same components as those in FIGS.

By the way, in each of the above-described configurations, the underwater information at a predetermined angular position is sequentially displayed by tilting the fishing rod 30, but a manual designation switch 51 is provided as shown in FIGS. Then, when the manual designation switch 51 is pressed, the underwater information captured by the ultrasonic transducer 15 at the pressed position may be plotted in the vertical pixel row 9. For example, when the power switch 7 is pressed once,
The automatic mode is set to capture the underwater information by tilting the fishing rod 30 as described above, and if pressed once more, the manual mode is set. When the manual designating switch 51 is pressed in the manual mode, the display screen 3 The underwater information is plotted in each vertical pixel column 9 sequentially from the left. Thus, here the horizontal scale 5 on the display screen 3 is meaningless. Then, in this configuration, while the rod 30 is appropriately tilted and the manual designation switch 51 is sequentially pressed, the underwater information of the position, which is discontinuous in the width direction of the display screen 3 but is appropriate, is indicated. As a result, it is possible to arbitrarily grasp the outline of the sea at a wide range of angles. Alternatively, it is possible to easily confirm the underwater depth at a specific position.

In each of the above-described configurations, the ultrasonic transducer 15 is provided at the tip of the fishing rod 30. However, in order to capture further underwater information, the fishing rod 3 is used.
By fixing the ultrasonic transducer 15 to a few meters of fishing line provided at the end of 0, and by throwing the ultrasonic transducer 15 in a manner of throwing fishing, it is possible to capture the underwater information of the distant place. It becomes possible. In this case, if the fishing rod 30 is tilted, the display will be delayed due to the length of the fishing line up to the position where the ultrasonic transducer 15 is supported. The display may be stopped during the OFF state of the operation switch, and the display may be started by returning to the ON state.

Accordingly, the user throws the ultrasonic transducer 15 far while the operation switch 50 is turned off,
After confirming that the fishing line has been tensioned by inclining the fishing rod 30, the operation switch 50 may be turned on to incline in one direction. In such a case, the state in which the rod is tensioned in one direction is the reference position, and the water is scanned by moving in only one direction. The screen may be positioned at the edge of the screen so that the screen can be widely used.
For setting the reference position on the screen, a mode changeover switch for switching between the normal mode and the long throw mode is provided, or a slide switch or the like is used to move the 0 ° tilt position steplessly on the screen. This can be easily achieved by using such variable selection means.

On the other hand, when the ultrasonic transducer 15 is provided on the fishing line, the delay angle of the fishing rod 30 is determined by the length of the fishing line. The screen display may be delayed and displayed.

In addition, in the above configuration, the underwater depth of the display screen 3 of the display device 2 is fixed at a full scale up to 12M in FIG.
The depth scale 6 may be enlarged or reduced by a selection switch or the like, or only a specific depth area may be displayed. Further, the display angle of the angle scale 5 may be changed. Thus, by setting the optimum depth dimension on the display screen 3 within the optimum angle range and displaying the underwater information, there is an advantage that the information display that is easy to see is possible. Alternatively, the depth scale may be automatically set in accordance with the depth of the seabed.

In the above configuration, the fishing rod 30 is provided with the detector main body 1 and the like so as to be used as a fish finder. However, the present invention can be easily used as a simple underwater exploration device. In this case, various components such as the detector main body 1 may be mounted on a normal rod.

Further, in the above-described configuration, a device for automatically storing the searched underwater information may be incorporated.

[0033]

According to the present invention, as described above, the rod 30 is tilted, and the ultrasonic transducer 15 provided on the rod or the thread is scanned along the water surface, whereby the rod is detected by the direction sensor 20. Since the underwater image is displayed on the display screen 3 based on the inclination angle of 30 and the underwater information of the angular position detected by the ultrasonic transducer 15, the underwater information can be easily captured. It can be used simply for improving fishing results, or for a wide range of uses, such as underwater search and seafloor topography survey.

Further, in the configuration provided with the manual designation switch 51, underwater information at an arbitrary position can be easily read, and similarly, it can be easily used for a wide range of uses such as underwater search and seafloor topography survey. It has excellent effects such as being able to be used for

[Brief description of the drawings]

FIG. 1 is a perspective view showing an example of an underwater detector according to the present invention.

FIG. 2 is a plan view of the detector main body 1. FIG.

FIG. 3 is a side view showing the position of the float 11 in a longitudinal section.

FIG. 4 is a block diagram showing a control mechanism.

FIG. 5 is a plan view showing a display screen 3;

FIG. 6 is a perspective view showing the operation of the underwater detector of another embodiment.

FIG. 7 is a side view of a detector main body 1 according to another embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Detector main body 2 Display device 3 Display screen 5 Angle scale 6 Depth scale 8 Set key 9 Vertical pixel row 11 Floating 15 Ultrasonic transducer 20 Direction sensor 30 Fishing rod 51 Manual designation switch

Claims (4)

[Claims] 1. A detector main body fixed to a hand portion of a rod, an azimuth sensor built in the detector main body for detecting an azimuth of the rod, and converting information from the azimuth sensor into angular displacement of the rod. Angle detection means for detecting the angular displacement of the rod, comprising azimuth signal processing means, and the inclination angle and the depth of the rod are indicated by vertical and horizontal axes, and the position is specified by the angle and the underwater depth to identify the underwater image. A display device having a display screen for displaying, an ultrasonic transducer attached to the tip of a rod or a thread, radiating ultrasonic waves into water, and capturing reflected waves thereof; and The received signal is transmitted to the detector body by a wired or wireless signal transmitting means, a received signal from the ultrasonic transducer, and displayed on a display screen based on angle information from the angle detecting means. Raw underwater image Water detector, characterized by comprising an image forming means for. 2. A detector main body rotatably supported by a base handle and fixed to a hand of a rod, and a detector built in the detector main body for detecting an angular displacement of the detector main body with respect to the base handle. Angle detection means, a display device equipped with a display screen that displays the underwater image by indicating the angle of inclination of the rod with respect to the base handle and the underwater depth by vertical and horizontal axes, specifying the position by the angle and the underwater depth, An ultrasonic transmitter / receiver attached to the tip of a rod or a thread to radiate ultrasonic waves into the sea and capture reflected waves thereof, and transmit a signal received from the ultrasonic transmitter / receiver to the detector main body. A wired or wireless signal transmitting means, and an image forming means for generating an underwater image displayed on a display screen based on a received signal from the ultrasonic transducer and angle information from the angle detecting means. Octopus Water detectors, wherein. 3. The underwater detector according to claim 1, further comprising a set key for setting a reference angle. 4. A detector body fixed to a hand of a rod, a manually designated switch, a display device having a display screen for displaying an underwater image, and an ultrasonic wave attached to a tip or a thread of the rod. An ultrasonic transducer that radiates into water and captures a reflected wave thereof; a wired or wireless signal transmitting unit that transmits a received signal from the ultrasonic transducer to the detector main body; a manually designated switch And an image forming means for generating an underwater image displayed on a display screen based on a wave reception signal from the ultrasonic wave transmitter / receiver for each pressing of the underwater detector.