JPH08160135A - Fishfinder system - Google Patents

Abstract

PURPOSE: To accurately display the relative position between a shool of fish and a contrivance without receiving any influence from a tidal current and, at the same time, to recognize the relation between water temperature data and the position of the contrivance. CONSTITUTION: The fishfinder system is provided with a transmitter-receiver which transmits ultrasonic waves against a school of shool and receives reflected waves from the school of fish. Ultrasonic transmitting-receiving units 50 are respectively incorporated in the weights of a contrivance. Each unit 50 is provided with receiving means 51, 52, and 53 and transmitting means 51, 52, and 54. When the receiving means 51, 52, and 53 receive specific encoded ultrasonic waves from a transmitter-receiver 13, the transmitting means 51, 52, and 54 transmit specific ultrasonic waves to the transmitter-receiver 13. Since the unit 50 is also provided with a temperature sensor 61, water temperature data are also transmitted to the transmitter-receiver 13 from the means 51, 52, and 54.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fish locating system, and more particularly to a fish locating system for displaying a relative positional relationship between a fishing tackle and a fish fleet and a water bottom on a fish locating unit, and the water temperature at the tackle position is the relative position. The present invention also relates to a fish detection system capable of measuring and displaying.

[0002]

2. Description of the Related Art Fishing and fishing are carried out by selecting a fishing ground based on the experience and intuition of fishermen and anglers (hereinafter referred to as "fishers"). ) Needs to be equipped with a fish detection unit to detect fish using ultrasonic waves. The earliest fish-finding unit was to transmit the ultrasonic waves and receive the ultrasonic waves reflected from the fish school to grasp the position of the fish school. However, this type of fish detection unit only grasps the positional relationship between the fish school and the fishing boat, etc., and cannot grasp the positional relationship between the work in progress and the fish school at all, and as a result, set the work in progress to an appropriate depth. There was a problem that I could not do it.
Therefore, the fisherman or the like may not be able to fully grasp the relative positional relationship between the fishery position and the fish school, and the desired catch may not be obtained.

In order to solve this problem, Japanese Patent Laid-Open No. 5-19
The invention described in Japanese Patent No. 6732 has been proposed. In the invention described in the publication, when the delivery of the electric reel is started, a detection pulse is output from an encoder provided on the electric reel according to the delivery, and the detection pulse is counted by a counter. Then, the count value is taken into the CPU of the fish finder via the interface. CPU
Stores this count value in the internal memory as information on the amount of fishing line to be paid out, and outputs the amount of payout to the indicator of the fish finder unit.

After the fishing hook attached to the tip of the electric reel reaches the bottom, the electric reel is put into the winding mode and the counter is reset. Subsequently, when the winding of the electric reel is started, a detection pulse is output from the encoder according to the winding, and the detection pulse is counted by the counter. The count value is sent to the CPU via the interface.
Is taken into. The CPU uses this count value as "Tana".
The information is stored in the internal memory and also output to the indicator of the fish finder unit. As a result, the display will show
Information about the amount of fishing line and the amount of fishing line is displayed.

The fish finder is provided with an oscillator and a wave transmitter / receiver unit, which transmits / receives ultrasonic waves to / from the water bottom and the fish school, and displays the position of the water bottom and the fish school on the display via the CPU. The position of the fish on the fish and the bottom of the water is displayed on the display at the same time. In addition, the amount of fishing line delivered until the work bottom reaches the bottom is measured by the encoder and counter on the electric reel side, and the actual distance to the bottom of the water is measured by the ultrasonic waves of the fish finder unit. Is to predict the deviation of work in process due to the influence of tidal current by the Pythagorean theorem. The above is the content of the invention described in this publication.

[0006] As another point of view, the movement of the fish is activated by the change of the water temperature, and the fish may have a better bite or may not move. And the effect of water temperature depends on the type of fish. Therefore, even if a fish locator is used to grasp the position of a fish and a tackle can be put into the fish, the water temperature may not be appropriate and the bite may be bad depending on the type of fish.
Therefore, it is also important to grasp the water temperature at the position of the school of fish and predict the biting degree of the fish in order to increase the fishing result.

From this point of view, Japanese Patent Laid-Open No. 63-59222 describes a device for grasping fish school data and water temperature data. The water temperature information from the water temperature sensor is converted into a digital value to give a signal indicating the fish school information. And the water temperature signal are combined in a time-division manner, and two types of information, the fish school and the water temperature, are transferred using radio waves in the same frequency band.

Japanese Unexamined Patent Publication (Kokai) No. 50-31884 is an invention relating to an ultrasonic telemeter type cast-off type water thermometer, which describes a technique for reducing the influence of water pressure on a vibrator for ultrasonic wave transmission. .

From another point of view, when a plurality of anglers or the like board a fishing boat or the like, if a plurality of work-in-process positions can be grasped in a short time, the taste of the angler or the like can be satisfied, Efficient fishing becomes possible.

[0010]

[Patent Document 1] Japanese Patent Application Laid-Open No. 5-196
The invention described in Japanese Patent No. 732 considers the influence of the tidal current, but cannot identify the deviation direction, so that there is a big problem that the accurate position display of the workpiece cannot be displayed when the workpiece moves due to the tidal current. In addition, since the fishing line feeding length and the winding length are counted by the counter of the electric reel and the position of the tackle for the fish school detected by the fish school detection unit is displayed, other than fishing tackle using the electric reel equipped with the counter, etc. However, there is a drawback that the invention cannot be implemented.

Further, in the inventions disclosed in JP-A-63-59222 and JP-A-50-31884, the accurate position of the temperature sensor and the water temperature gauge cannot be grasped, and they move along with the tidal current. Even if such a temperature sensor or water temperature gauge is attached to the tackle, the relationship between the measured water temperature and the water depth cannot be said to be accurate, and it is not possible to accurately grasp whether or not it is the water temperature in the school of fish.

Further, in the conventional device, when a plurality of fishermen or the like are boarding a fishing boat or the like, it is not possible to grasp a plurality of work-in-process positions in a short time.

Therefore, according to the present invention, it is possible to accurately display the relative positional relationship between the tackle and the school of fish without being affected by the tidal current, and it is possible to accurately grasp the relationship between the water temperature data and the tackle position. It is also an object of the present invention to provide a fish finder system that can grasp a plurality of work in progress positions in a short time.

[0014]

In order to achieve the above object, the present invention provides a first transmitting means for transmitting an ultrasonic wave to a school of fish or the bottom of the water, and an ultrasonic wave reflected from the school of fish or the bottom of the water. And a first control means for calculating the position of the fish school and the water bottom based on the wave reception signal of the first wave receiving means, and the fish school and the water bottom based on the calculation result of the first control means. In a fish finder system comprising a fish finder unit having display means for displaying, a second wave receiving means 5 for receiving the ultrasonic waves transmitted from the first wave transmitting means 13, 14, 15.
1, 52, 53 and second control means 57 for discriminating the type of ultrasonic waves received by the second wave receiving means 51, 52, 53.
58, 59 and the first wave receiving means 13, 14, 16 in response to the waves received by the second wave receiving means 51, 52, 53 based on the discrimination results of the second control means 57, 58, 59. On the other hand, second transmitting means 51, 52 for transmitting ultrasonic waves that can be distinguished from the ultrasonic waves transmitted by the first transmitting means 13, 14, 15.
The ultrasonic transmission / reception unit 50 having 54 and
9, the position of the work in progress can be displayed on the display means 23 via the first control means 24, 18, 19 based on the ultrasonic waves transmitted from the second wave transmission means 51, 52, 54. It provides a fish detection system.

Here, the first transmitting means 13, 14, 15 are provided with the first control means 2 in order to give a specific code to the ultrasonic waves.
4, 18, 19 connected to the ultrasonic transmission / reception unit 50
The second control means 57, 58, 59 of have an identification means 59 storing a set value for identifying an ultrasonic wave having the specific code, and the set value of the identification means 59 is a specific value of the ultrasonic wave. The second transmitting means 51, 52, 5 only when they match the code.
It is preferable that 4 transmits the identifiable ultrasonic wave to the first wave receiving means 13, 14, 16.

Alternatively, the first transmitting means 13, 14, 15 are provided with a first control means 24, for imparting a specific frequency to the ultrasonic waves.
The second control means 57, 58, 59 of the ultrasonic transmission / reception unit 50, which is connected to the ultrasonic transmission / reception units 18, 19, stores set values for identifying the ultrasonic waves having the specific frequency.
And the second transmitting means 51, 52, 54 are provided to the first receiving means 13, 14, 16 only when the set value of the identifying means 59 matches the specific frequency of the ultrasonic waves. It is preferable to transmit a sound wave.

The identifying means 59 is preferably connected to a changing means 60 for changing the set value.

Further, a temperature sensor 61 is connected to the second control means 57, 58, 59 of the ultrasonic transmission / reception unit 50 of the work in progress 7, 8, 9 and the second control means 57, 58, 5 are provided.
Reference numeral 9 encodes the water temperature value measured by the temperature sensor 61, and the second transmitting means 51, 52, 54 transmit ultrasonic waves encoding the water temperature value to the first receiving means 13, 14, 16. The work-in-process 7, through the first control means 24, 18, 19 based on the encoded ultrasonic wave relating to the temperature value received by the first wave receiving means 13, 14, 16 It is preferable that the water temperatures at positions 8 and 9 can be displayed on the display means 23.

In addition, the ultrasonic waves transmitted by the second wave transmitting means 51, 52, 54 of the plurality of devices 7, 8, 9 are different from each other, and the first wave transmitting means 13, 14, 15 are plural. Second wave receiving means 51, 52 of each of the devices 7, 8, 9 of
A common ultrasonic wave to be received by 53 is provided so as to be able to be transmitted, and in response to the reception of the common ultrasonic wave by the respective second wave receiving means 51, 52, 53, the respective second control means 57. 5,
The second transmitting means 51, 5 respectively via 8, 59
Reference numerals 2 and 54 are configured to be capable of transmitting the different ultrasonic waves to the first wave receiving means 13, 14, 16 and, via the first control means 24, 18, 19 based on the different ultrasonic waves. It is preferable that the display means 23 can collectively display the positions of a plurality of work in progress 7, 8, 9.

[0020]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A fish school detection system according to a first embodiment of the present invention will be described with reference to FIGS.

FIG. 1 is a schematic diagram showing a school of fish locating system 1, a school of fish F and a water bottom B. The fish detection system 1 includes a fish detection unit 10 (FIG. 2) and an ultrasonic transmission / reception unit 50.
(FIG. 3) and. The transducer 13 of the fish detection unit 10 is attached to the bottom of the fishing boat S, etc.
Each of the fishing rods 4, 5, 6 is equipped with a tackle 7, 8, 9 composed of fishing hooks, baits, weights and the like. The weights of the works 7, 8 and 9 have an ultrasonic transmission / reception unit 50 (FIG. 3) built therein.

FIG. 2 is a block diagram showing the details of the fish finder unit 10 and the relationship between the unit 10 and the ultrasonic transmission / reception unit 50. Transducer 1 of fish detection unit 10
3 has a function of transmitting an ultrasonic wave toward the bottom of the water and a function of receiving the ultrasonic wave reflected from the bottom of the water or a school of fish (transmission / reception function). That is, the ultrasonic waves transmitted from the wave transmitter / receiver 13 are transmitted to the fish school F.
Then, it is reflected on the water bottom B and taken into the wave transmitter / receiver 13. The depths of the school of fish F and the bottom of the water B can be measured by detecting the time from the transmission of ultrasonic waves to the reception of reflected waves. Here, the transceiver 13 transmits variously encoded ultrasonic waves,
The specific ultrasonic waves transmitted from the ultrasonic transmission / reception unit 50 provided in a specific work are also taken in by the wave transmitter / receiver 13 at the position of the work or the position of the work. The water temperature is specified. The wave transmitter / receiver 13 has a well-known scanning sonar type structure and can detect all directions around the ship as described later.

The transceiver 13 is connected to the transmission / reception switch 14 which is connected to the controller 24. The switching operation of the transmission / reception switch 14 is controlled by the control unit 24. Transmission / reception switch 1
Reference numeral 4 is connected to the wave transmitter 15 and the wave receiver 16 which are connected to the control unit 24. The wave receiver 16 is provided to receive the ultrasonic waves reflected from the school of fish F and the water bottom B. Receiver 16
Is further connected to the A / D converter 17 connected to the controller 24. The A / D converter 17 is provided for converting the reflected ultrasonic waves from the fish school F or the like received by the wave receiver 16 into an analog signal and then converting the analog signal into a digital signal. Further, a main memory 19 connected to the control unit 24 is provided for storing the digital signal. The D / A converter 20 is connected to the controller 24. In addition, the wave transmitter / receiver 13, the transmission / reception switching device 14, the wave transmitter 15
Constitutes the first wave transmitting means, and the wave transmitter / receiver 13, the transmission / reception switching device 14, and the wave receiver 16 constitute the first wave receiving means.

A sub-memory 18 which stores the operation program and also stores the basic waveform data corresponding to each encoded ultrasonic wave is provided so as to be connected to the control unit 24. Further, the D / A converter 20 connected to the control unit 24
Are connected to the color matrix 21, the color matrix 21 is connected to the deflector 22, and the deflector 22 is connected to the color cathode ray tube 23. Further, the control unit 24 is connected to the deflector 22 via the television circuit 25. Further, the display controller 26 is connected between the controller 24 and the D / A converter 20. The control unit 24 is further connected to the operation unit 27, and the operation unit 27 performs operations such as range, shift, enlargement, and scale for displaying on the color CRT 23, and ultrasonic wave encoding operation. The control unit 24, the main memory 19, and the sub memory 18 described above form a first control unit.

FIG. 3 is a block diagram showing an ultrasonic wave transmitting / receiving unit 50 incorporated in the weights of the work in progress 7, 8, 9.
The ultrasonic wave transmission / reception unit 50 has a wave transmitter / receiver 51 capable of mechanical vibration in order to selectively execute transmission and reception of ultrasonic waves. Further, a transmission / reception switching device 52 for switching the transmission / reception function of the transmission / reception device 51 is connected to the transmission / reception device 51, and the transmission / reception switching device 52 is connected to the reception amplifier 53 and the oscillator 54. The wave receiving amplifier 53 is for expanding the electric signal generated by the ultrasonic wave received by the wave transmitter / receiver 51, and the oscillator 54 is for forming electric vibration having a specific waveform. The receiving amplifier 53 is connected to an A / D converter 55 for converting an analog signal (ultrasonic signal having a specific waveform) into a digital signal, and the A / D converter 55 is connected to a control unit 57. Similarly, the oscillator 54 is connected to a D / A converter 56 for converting a digital signal into an analog signal (ultrasonic signal), and the converter 56 is connected to the control unit 57.

The control unit 57 includes a main memory 58 and a sub memory 5
9, a switch 60 and a temperature sensor 61 described later are connected. The main memory 58 is provided so as to be able to store an operation program, and is also provided so as to be able to store data relating to encoded ultrasonic waves that have been amplified by the receiving amplifier 53 and digitally converted by the A / D converter 55. ing.
The sub memory 59 functions as an identification unit, and is configured to be able to previously store setting data for identifying a specific encoded ultrasonic wave transmitted from the wave transmitter / receiver 13 of the fish finder unit 10.

Here, the ultrasonic coding is known waveform coding, analysis / synthesis coding, high efficiency transmission by multiplexing, etc. In the present embodiment, waveform coding such as companding PCM is used. It The switch 60 is composed of, for example, a DIP switch, and is provided to change the setting data stored in the sub memory 59. The control unit 57 stores, in the sub memory 59, only when the specific encoded ultrasonic wave is received, that is, the ultrasonic wave transmitted from the wave transmitter / receiver 13 of the fish detection unit 10. The same encoded ultrasonic wave is transmitted from the oscillator 54 only when the set values match. In other words, the received ultrasonic wave data stored in the main memory 58 and the sub memory 5
9 is compared with a preset value stored in advance, and the same encoded ultrasonic wave is transmitted from the oscillator 54 only when they match.

Specifically, the setting data is adjusted by each switch 60 so that the devices 7, 8, and 9 are sensitive only to the encoded ultrasonic waves "0011", "0022", and "0033", respectively. To do. Thereby, for example, when the ultrasonic wave transmitted from the wave transmitter / receiver 13 of the fish detection unit 10 is the coded “0011”, only the work 7 is sensitive.

When the received ultrasonic wave data stored in the main memory 58 and the set value previously stored in the sub memory 59 match and the same encoded ultrasonic wave is transmitted from the oscillator 54, the oscillator 54 The intensity of the ultrasonic waves transmitted from the fish finder unit 10 is set to be higher than the intensity of the ultrasonic waves transmitted from the transducer 13 of the fish finder unit 10. It is possible to identify whether the ultrasonic wave received by the vessel 13 is a reflected wave from the fish school F or the water bottom B or a transmitted wave from the ultrasonic wave transmitting / receiving unit 10. Here, the intensity of ultrasonic waves means the intensity or loudness of sound. The wave transmitter / receiver 51, the transmission / reception switching device 52, and the wave receiving amplifier 53 constitute second wave receiving means.
The transmission / reception switch 52 and the oscillator 54 constitute a second wave transmission means,
The control unit 57, the main memory 58, and the sub memory 59 form second control means.

A temperature sensor 61 is further attached to each of the works 7, 8 and 9, and specifically, the temperature sensor 61 is connected to the control section 57 of the ultrasonic wave transmitting / receiving unit 50. The temperature sensor 61 is composed of a known temperature measuring sensor and is attached to each of the work-in-process 7, 8 and 9, so that the water temperature at each work-in-process position is measured. The control unit 57 uses the temperature sensor 6
The water temperature value obtained in 1 is coded, and the coded value is instructed to be transmitted from the wave transmitter / receiver 51 to the fish school detection unit 10. For example, the code corresponding to the water temperature is previously stored in the sub memory 59 described above, and the code stored in the sub memory 59 corresponding to the water temperature value is called based on the water temperature value input to the control unit 57. . Specifically, the unique code value “210” when the water temperature is 5 ° C. is called from the sub memory 59. Therefore, the water temperature value is transmitted from the wave transmitter / receiver 51 to the fish finder unit 10 as ultrasonic waves having a specific coded value.

As a result of combining the fish finder unit 10 and the ultrasonic transmission / reception unit 50, the wave receiver 16 of the fish finder unit 10 is provided not only for the ultrasonic waves reflected from the fish school and the bottom of the water, but also for a specific device. The ultrasonic wave transmitted from the ultrasonic wave transmitting / receiving unit 50 is received. Here, the content of the transmission from the ultrasonic transmission / reception unit 50 includes data on the work-in-progress position,
It is a combination of water temperature data at the work-in-progress position.

The ultrasonic wave having a specific waveform transmitted from the wave transmitter / receiver 13 of the fish finder unit 10 is reflected by the fish school or the water bottom and taken into the wave transmitter / receiver 13. This ultrasonic wave transmitted from the wave transmitter / receiver 13 reaches the devices 7, 8 and 9 further,
The processing as shown in FIG. 4 is performed in the work in process 7, 8, 9.

That is, in step S1, the transmitter / receiver 13
The ultrasonic wave having a specific waveform transmitted from is received by the wave transmitter / receiver 51 of the ultrasonic wave transmitting / receiving unit 50, and the ultrasonic wave signal is converted into an analog electric signal in the wave receiving amplifier 53.
Next, in step S2, the converted electrical signal is A /
The digital signal is converted by the D converter 55. Next, in step S3A, a process of extracting the waveform of the ultrasonic wave (extracting the code) from the converted digital signal is performed. This extracted data is stored in the main memory 58. Then, in step S4A, the extracted data and the sub memory 59
It is confirmed whether or not the setting data stored in is coincident with each other (S4A: No).
No instruction is given to 2, and the wave reception state of the wave transmitter / receiver 51 is maintained. That is, the wave transmitter / receiver 51 stands by in the wave receiving state until the extracted data stored in the main memory 58 and the setting data stored in the sub memory 59 match.

On the other hand, when the extracted data and the set value stored in the sub memory 59 match (S4A: Yes), the process moves to step S5 and the water temperature value from the temperature sensor 61 is input. Next, in step S6, the unique code value corresponding to the water temperature value is called from the sub memory 59. Further, the control unit 57 outputs a transmission / reception switching signal to the transmission / reception switching unit 52, the wave transmission / reception unit 51 is switched to a state capable of transmitting waves, and the setting data stored in the sub memory 59 is digitally stored in the control unit 57. Is generated in the electrical signal of. That is, in step S6, an encoding process for encoding the setting data set in the ultrasonic transmission / reception unit 50 and the water temperature and a transmitting process for transmitting the encoded data are performed. These digital electric signals are converted into analog signals by the D / A converter 56 in step S7, and the analog signals are converted into encoded electric signals by the oscillator 54 in step S8. Then, the ultrasonic wave is modulated by the wave transmitter / receiver 51 via the transmission / reception switcher 52, and the encoded ultrasonic wave is transmitted. Since the intensity of the ultrasonic wave at this time is set high, it can be distinguished from the ultrasonic wave reflected from the school of fish or the like. Then, the ultrasonic waves transmitted from the wave transmitter / receiver 51 of the specific device 7 or 8 or 9 are captured by the wave transmitter / receiver 13 of the fish finder unit 10 like the reflected waves from the water bottom B and the fish school F.

In the fish finder unit 10, reflected ultrasonic waves from a school of fish or the like and transmitted ultrasonic waves from a specific device are converted into electric signals by the wave receiver 16, and the electric converted analog electric signals are A / D. It is converted into a digital signal by the converter 17. The converted digital signal is stored in the main memory 19. The digital signal stored in the main memory 19 discriminates and recognizes a signal from a fish school or the like and a signal from a tackle, and the controller 24 calculates data to measure the positions of the fish school and the tackle. As described above, since the intensity of the ultrasonic wave transmitted from the device is electrically adjusted on the device side so as to be higher than the reflected wave from the school of fish, the sub memory 18
Inside, it is possible to identify the mechanism and the school of fish.

An example of the data calculation method here will be described. The wave transmitter / receiver 13 of the fish finder unit 10 has a well-known scanning sonar type structure and can detect all directions around the ship. The ultrasonic waves transmitted from the wave transmitter / receiver 13 are reflected by the school of fish F and the like, and the reflected waves from the respective directions are received by the wave transmitter / receiver 13. Transceiver 13
Has a very narrow directivity, without rotating the oscillator,
By electronically turning (switching), it is possible to instantaneously sequentially capture the reflected waves of ultrasonic waves from the respective directions. FIG. 5A shows pulsed ultrasonic waves transmitted from the transducer 13, and FIGS. 5B, 5C, and 5D show reflected ultrasonic waves from different directions. (C) has a rectangular pulse wave and a normal sine wave. The sine waveform is a reflected wave from a school of fish, etc., and the pulse wave is an ultrasonic wave from a device, which is much stronger than the reflected wave. In the fish finder unit 10, it is possible to specify from which direction the reflected wave is based on the order in which the waveforms (b), (c), and (d) appear. belongs to. In other words,
The position of the fish school in each direction can be grasped by measuring the received waves by scanning. The rising part of the sine wave formed by the reflection by each school of fish is the upper limit of the school of fish, and the falling part is the lower limit of the school of fish.

As for the distance from the wave transmitter / receiver 13 to the school of fish, the time T1 from the rising of the pulse wave to the return of the reflected wave in FIG. For the distance from 8, the time T2 may be converted into the distance. The positional relationship between the fish school and the tackle can be measured by the relative time difference.

This operation data is converted from a digital signal to an analog signal by the D / A converter 20. This analog signal is converted into an RGB signal by the color matrix 21,
As shown in FIG. 1, the positions of the tackle and the school of fish are displayed on the color CRT 23. Further, the control unit 24 performs a process of converting the code value of the ultrasonic wave received from the work in process into the water temperature.

Sub memory 59 of each work in progress 7, 8 and 9
Since the different setting data corresponding to the ultrasonic waves to which the different codes are added are input to, the setting corresponding to the ultrasonic waves to which the specific code is added transmitted from the fish detection unit 10 side. Only devices with data will transmit ultrasonic waves of the same sign and amplified.
Therefore, even when a large number of people are fishing, the position of the tackle of a specific person and the relative position between the tackle and the school of fish can be determined. If the setting data of each person is common,
The setting data may be changed by operating the switch 60 on the work in process side. Then, ultrasonic waves having waveforms corresponding to different setting data may be sequentially transmitted from the transceiver 13.

It is also possible to assign numbers to a plurality of devices and display the relative positions of the devices and the fish school for each number. Further, after storing the positions of the respective tackles, the relative positions of all the tackles 7, 8, 9 and the fish school F as shown in FIG. 1 can be confirmed if they are simultaneously displayed on the color cathode ray tube 23. For example, in the above-described embodiment, the relative relationship between each work in progress and the school of fish is individually grasped, but it is also possible to grasp all the work in progress positions collectively.
Specifically, as described above, the devices 7, 8, and 9 are set by the respective switches 60 so as to be sensitive only to the encoded ultrasonic waves “0011”, “0022”, and “0033”, respectively. However, when the common coded ultrasonic wave is transmitted from the transmitter / receiver 13, all the work-in-process 7, 8, 9 are made sensitive.

For example, assuming that the highest digit is 1, "1000"
When the encoded ultrasonic wave of is transmitted from the wave transmitter / receiver 13, regardless of the set values of the respective work in progress, the work in progress 7, 8 ,,
9 transmitters / receivers 51 "0011", "002"
Transmitter / receiver 1 for encoded ultrasonic waves of "2" and "0033"
It is configured to transmit waves toward 3. As a result, the above-mentioned known scanning sonar type transmitter / receiver 13 sequentially inputs the respective unique encoded ultrasonic waves from the workpiece distributed in each direction in a scanning manner and processes them. By transmitting the commonly encoded ultrasonic waves, as shown in FIG. 6, the positions of the devices 7, 8, and 9 are (b),
When measured as in (c) and (d), work-in-progress 7, 8,
The position of 9 should be converted to the distance from the time of ultrasonic wave transmission to T2, T2 ', T2 ", and the position of the fish school layer should be the time from ultrasonic wave transmission to T1, T1', T1". It can be grasped by converting to distance. If these data are simultaneously displayed on the color cathode ray tube 23, it is possible to collectively grasp the school of fish and the position of each work in progress.

A fish school detection system according to the second embodiment of the present invention will be described with reference to FIG. In the first embodiment, in order to specify the positions of the in-process devices, different encoded ultrasonic waves, that is, ultrasonic waves having different waveforms are sequentially transmitted from the fish finder unit 10 to correspond to specific codes. Only the device is configured to amplify the same encoded ultrasonic wave and transmit the amplified ultrasonic wave toward the fish finder unit 10, but in the second embodiment, the ultrasonic wave frequencies are made different, Only the device corresponding to the ultrasonic wave of the specific frequency is configured to transmit the ultrasonic wave of the same frequency to the fish finder unit 10. Therefore, the main memory 58 of the fish detection unit 50 is provided so as to be able to store the operation program, and the ultrasonic wave of a specific frequency which is received by the receiving amplifier 53 and digitally converted by the A / D converter 55. Are memorable. The sub memory 59 functions as an identification means, and is configured to be able to store in advance setting data for identifying the ultrasonic wave of a specific frequency transmitted from the wave transmitter / receiver 13 of the fish detection unit 10. Other configurations are similar to those of the first embodiment.

FIG. 7 shows a flow chart from ultrasonic wave reception to ultrasonic wave transmission in the process of the second embodiment. In step S1, the ultrasonic waves of a specific frequency transmitted from the wave transmitter / receiver 13 attached to the fishing boat S,
The ultrasonic wave is received by the wave transmitter / receiver 51 of the ultrasonic wave transmitting / receiving unit 50, and the ultrasonic wave signal is converted into an analog electric signal in the wave receiving amplifier 53. Next, in step S2, the converted electric signal is converted into a digital signal by the A / D converter 55. Next, in step S3B, the converted digital signal relating to the specific frequency is stored in the main memory 58. Then, in step S4B, it is confirmed whether or not the specific frequency data and the set value stored in advance in the sub memory 59 match. If they do not match (S4B: No), the control unit 57 instructs the transmission / reception switch 57. The transmitter / receiver 51 maintains the reception state without giving an instruction.

When the input frequency and the set value stored in the sub memory 59 match (S4B: Yes), the control unit 57 outputs a switching signal to the transmission / reception switching device 52 and transmits the transmission / reception device 51. Switch to wave state. Next, in step S5, the control unit 57 converts the set frequency stored in the sub memory 59 into a digital electric signal, and then in step S5.
The digital electric signal converted in 6 is converted into an analog signal by the D / A converter 56. Further, in step S7, the oscillator 54 converts the analog signal into an ultrasonic signal of a specific frequency, and the wave is transmitted from the wave transmitter / receiver 51 to the wave transmitter / receiver 13 of the fish finder unit 10 via the transmission / reception switch 52. Since the intensity of the ultrasonic wave at this time is set high, it can be distinguished from the ultrasonic wave reflected from the school of fish or the like.

Similar to the first embodiment, the specific work 7
Alternatively, the ultrasonic waves transmitted from 8 or 9 are captured by the wave transmitter / receiver 13 of the fishing boat S or the like in the same manner as the reflected waves from the water bottom B and the fish school F. Then, the wave transmitted from a specific device is taken into the fish finder unit 10, but as described above, the intensity of the wave transmitted from the device is electrically adjusted on the side of the device so as to be larger than the reflected wave. Therefore, it is possible to identify the tackle and the fish school in the fish school detection unit 10.

Sub memory 59 for each work in progress 7, 8 and 9
In the input, different setting data corresponding to different ultrasonic frequencies are input, and only the device having the setting data corresponding to the specific frequency of the ultrasonic waves transmitted from the fish detection unit 10 side is enhanced. The generated ultrasonic waves of the same frequency are transmitted. Therefore, even when a large number of people are fishing, the position of the tackle of a specific person and the relative position between the tackle and the school of fish can be determined. When the setting data of each person is common, the setting data may be changed by operating the switch 60 on the work-in-process side. Then, ultrasonic waves having frequencies corresponding to different setting data may be provided so as to be output from the transceiver 13.

It is possible to assign a number to a plurality of devices and display the relative positions of the devices and the school of fish for each number. Further, after storing the positions of the respective tackles, the relative positions of all the tackles 7, 8, 9 and the fish school F as shown in FIG. 1 can be confirmed if they are simultaneously displayed on the color cathode ray tube 23.

Further, as in the first embodiment, a temperature sensor may be attached to each work in process so that water temperature data can be displayed together, and a common frequency is used to collectively position all the works. May be understood.

[0049]

According to the fish school detecting system of the present invention described above, the second wave receiving means and the second wave transmitting means are provided in the work to receive the ultrasonic waves from the fish school detecting unit and respond to the received waves. Since the ultrasonic waves are transmitted toward the fish finder unit, the position of the work in progress can be accurately measured by the ultrasonic waves without being affected by the tidal current, and the relative positional relationship between the work in progress and the fish school, etc. is accurate. It can be displayed on the display unit of the fish detection unit. Further, information such as fishing line length feeding amount data from the electric reel is not necessary, and the position of the work in process can be specified even with a normal reel. In other words, it is not necessary to equip the fishing rod section with a power source, and it is easy to carry and handle.
It has an advantage that the operation is simple.

When a plurality of anglers are fishing,
An ultrasonic wave having a specific different code is assigned to each angler, and a set value corresponding to the assigned code of the ultrasonic wave is stored in the identification means of the ultrasonic transmission / reception unit of the work in progress, and the ultrasonic wave having the corresponding code is sequentially generated. When transmitted from the fish finder unit, only the device which stores the corresponding set value transmits the ultrasonic wave to the fish finder unit in response to the ultrasonic wave. Therefore, the position of each person's work in progress can be specified.

Similarly, when a plurality of anglers are fishing, ultrasonic waves of a specific different frequency are assigned to each angler, and the set value corresponding to the assigned frequency of the ultrasonic waves is set in the ultrasonic wave transmitting / receiving unit in progress. It is stored in the identification means,
When ultrasonic waves of corresponding frequencies are sequentially transmitted from the fish finder unit, only the device storing the corresponding set value transmits the ultrasonic waves to the fish finder unit in response to the ultrasonic waves. Therefore, the position of each person's work in progress can be specified.

Further, since the set value of the identifying means can be changed by the changing means, when the set values of the fisherman's in-process are the same, the set value can be easily changed immediately before starting fishing. Therefore, there is also an advantage that it is not necessary to prepare a work in process for each set value and the number of work in preparations can be reduced.

In addition, by attaching a temperature sensor to each work in process, the water temperature at the current position of the work can be measured. Therefore, the fisherman knows the current accurate position of the tackle, and also knows whether the current position of the tackle is appropriate for the school of fish and whether the water temperature is a proper water temperature position (a water temperature position with a good bite). be able to.

Further, a common ultrasonic wave is transmitted to each of the devices, and in addition to being sensitive to the unique ultrasonic wave of each device, it is also configured to be sensitive to the common ultrasonic wave. It is also possible to grasp the in-process positions collectively. Therefore, each angler can know the position of his / her own work in a timely manner.

[Brief description of drawings]

FIG. 1 is a diagram showing an outline of a fish school detection system of the present invention.

FIG. 2 is a block diagram of the fish finder system of the present invention.

FIG. 3 is a block diagram of an ultrasonic transmission / reception unit provided in a work in the fish detection system of the present invention.

FIG. 4 is a flowchart showing processing from ultrasonic wave reception to ultrasonic wave transmission in the ultrasonic wave transmission / reception unit according to the first embodiment of the present invention.

FIG. 5 is an explanatory diagram showing waveform data for grasping positions of fish school and a tackle in the first embodiment of the present invention.

FIG. 6 is an explanatory view showing waveform data when grasping all in-process positions in the first embodiment of the invention.

FIG. 7 is a flowchart showing processing from ultrasonic wave reception to ultrasonic wave transmission in the ultrasonic wave transmission / reception unit according to the second embodiment of the present invention.

[Explanation of symbols]

 1 Fish Detecting System F Fish School B Water Bottom S Fishing Boat 7, 8, 9 Work in Progress 10 Fish Detecting Unit 13 First Wave Transmitting Means, Transducer as First Wave Receiving Means 15 First Wave Transmitting Means 16 First Receiving Wave receiving device 18 Wave control device Sub memory 19 First control device Main memory 23 Display device Color cathode ray tube 24 First control device Control unit 50 Ultrasonic wave transmitting / receiving unit 51 Second wave sending device, Second Transceiver as wave receiving means 53 Wave receiver as second wave receiving means 54 Wave transmitter as second wave transmitting means 57 Control unit 58 as second control means 58 Main memory 59 as second control means 59 Second control means, identification Means auxiliary memory 60 Change means switch 61 Temperature sensor

Claims (6)

[Claims] 1. A first transmitting means for transmitting an ultrasonic wave to a school of fish or the bottom of the water, a first receiving means for receiving an ultrasonic wave reflected from the school of fish or the bottom of the water, and the first receiving means. First control means for calculating the position of the fish school or the bottom of the water based on the received signal of the wave means,
A fish locating system comprising a fish locating unit having display means for displaying a school of fish or a bottom of water based on the calculation result of the first control means, wherein the ultrasonic wave transmitted from the first transmitting means is received. Second wave receiving means for determining the type of ultrasonic waves received by the second wave receiving means, and the second wave receiving means based on the determination result of the second control means. The first in response to reception
An ultrasonic wave transmission / reception unit having a second wave transmission means for transmitting an ultrasonic wave that is distinguishable from the ultrasonic wave transmitted from the first wave transmission means to the wave reception means is provided in the device, and A fish locating system, wherein the position of a work in progress can be displayed on the display means via the first control means based on the ultrasonic waves transmitted from the wave transmission means. 2. The first transmitting means is connected to a first control means for imparting a specific code to the ultrasonic wave, and the second control means of the ultrasonic wave transmitting / receiving unit has a ultrasonic wave having the specific code. Having an identification means that stores a set value for identifying a sound wave,
The second transmitting means transmits the identifiable ultrasonic wave to the first receiving means only when the set value of the identifying means matches a specific code of the ultrasonic wave. Fish detection system. 3. The first transmitting means is connected to the first control means for imparting a specific frequency to the ultrasonic waves, and the second control means of the ultrasonic transmitting / receiving unit transmits the ultrasonic waves having the specific frequency. Having identification means for storing set values for identification,
The second transmitting means transmits the identifiable ultrasonic wave to the first receiving means only when the set value of the identifying means matches the specific frequency of the ultrasonic wave. Fish detection system. 4. The fish locating system according to claim 2, wherein the identifying means is connected to a changing means for changing the set value. 5. The second of the ultrasonic transmission / reception unit of the work in process
A temperature sensor is connected to the control means, the second control means encodes the water temperature value measured by the temperature sensor, and the second transmitting means transmits the ultrasonic wave encoding the water temperature value to the first received wave. Means for transmitting waves to the means, and based on the encoded ultrasonic wave relating to the temperature value received by the first wave receiving means, the water temperature at the position of the work in progress is displayed through the first control means. The fish locating system according to claim 1, wherein the fish locating system is capable of displaying. 6. The ultrasonic waves transmitted by the second wave transmitting means of each of the plurality of works are different from each other, and the first wave transmitting means is received by each second wave receiving means of the plurality of work. The second ultrasonic wave transmitting means is provided so as to be able to transmit a common ultrasonic wave, and in response to the reception of the common ultrasonic wave by the respective second ultrasonic wave receiving means, the respective second ultrasonic wave transmitting means via the respective second control means. Configured to be capable of transmitting the different ultrasonic waves to the first wave receiving means,
The fish locating system according to claim 1, wherein the display means can collectively display the positions of a plurality of work in progress via the first control means based on the ultrasonic waves different from each other.