JP2003344530A - System for radio transmitting and displaying fish finding information radio transmitter, and receiving and displaying terminal - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a system for radio transmitting and displaying fish finding information that can inexpensively and for every angler provide the guest anglers of a fishing boat with various kinds of fish finding information in a small size in real time. <P>SOLUTION: This system for radio transmitting and displaying fish finding information is provided with a fish finder which outputs a group of information on the found results of fish in the form a NMEA data; a radio transmitter which extracts a plurality of bits of information including the information on the depth of water from the NMEA data, modulates the extracted information, and transmits the information by specific small-power radio; and one or more receiving and displaying terminals which display a sea bottom line on a screen by using the history of the information on the depth of water based on the plurality of bits of information and, at the same time, the information on the found results of the school of fish including the depth of water, the depth to the fish, and the amount of the fishes on the screen by receiving and demodulating transmitted radio waves. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fish finder information wireless transmission / display system for providing fish hunting information to a fishing customer or the like in a boat such as a recreational fishing boat, and a wireless transmission device and a reception display terminal therefor.

[0002]

2. Description of the Related Art On a boat such as a recreational fishing boat, a fish finder is usually installed on the boat. On the ship, in order to provide the fish finder information obtained by the fish finder, such as the water depth, the fish volume, the fish depth, the water temperature, the current position, etc. They even enter the wheelhouse and check the fish finder video. However, with this, there are complaints such as missed announcements and unable to concentrate on fishing.

Conventionally, a device for transmitting an image of a fish finder to another place and restoring the image has been put into practical use as a wireless transmission type fish finder for use in a winding net or two trawlers. There is. This is used for the purpose of watching an image of a fish finder mounted on a fixed net on land or watching an image of a fish finder of a subordinate ship on the ship.

As shown in FIG. 7, the configuration of this conventional radio transmission type fish finder is, for example, on the slave side ((a) in the figure), the fish finder wave signal before the display image from the fish finder 71. The transmission synchronization signal is branched from the middle, input to the transmitter 72, modulated by voltage-frequency conversion (V / F conversion), etc., and transmitted as wireless transmission data from the wireless transmission unit 74. The radio transmission data has a frequency of 40 MHz, an output of 100 mW, and an effective business range (radio wave reach) of about 10 km, for example. For example, on the ship side ((b) in the figure), the wireless transmission data is received by the wireless receiver 76 in the receiver 75 and frequency-voltage converted (F / V converted) in the demodulator 77 in the signal. The included transmission signal is separated by the data processing unit 78, and the fish detection wave signal is output to the ship side fish finder 79 together with the transmission synchronization signal. In this main line side fish finder 79, the transmitted fish detection signal is input to the circuit portion in which the fish detection signal is to be generated, and the fish finder image is displayed. The crew on the side of the ship understands the situation on the side of the ship by means of this fish finder image.

[0005]

In this conventional radio transmission type fish finder, only the fish finder wave signal (detected waveform) is sent, so that the GPS finder is sent to the fish finder on the transmitting side.
Even if a receiver and a water temperature sensor are installed, the position data and water temperature data obtained from them cannot be used. Further, since the fish finder wave signal of the transmitting side fish finder is taken out, it is difficult to connect to the transmitter, and it is difficult to connect fish finders of different manufacturers with each other because of signal adjustment and the like. In addition, the fish finder and the fish finder are connected to each other, and the radio waves used are 100 mW and 10 k.
Since the strength is about m, the device becomes large and expensive.

Therefore, this conventional wireless transmission type fish finder is used by a fisherman on a boat such as a recreational fishing boat to obtain fish finder information such as water depth, fish flesh, fish flesh depth, water temperature, and current position. It was practically impossible to use it to provide such as.

In view of the above-mentioned problems, the present invention can provide various types of fish locating information in real time to a fisherman on a boat such as a recreational fishing boat in a small size and at a low cost. An object of the present invention is to provide a possible fish finder information wireless transmission display system, and a wireless transmission device and a reception display terminal therefor.

[0008]

According to a first aspect of the present invention, there is provided a fish finder information wireless transmission / display system for use in a ship, wherein each piece of information is represented by a numerical value. A fish finder that serially outputs an information group as digital data at predetermined time intervals, and a fish finder information group from the fish finder is input, and water depth information, fish depth information, and fish school quantity information are output from the fish finder information group. A wireless transmitting device having a data editing means for extracting a plurality of information including the data, and a wireless transmitting means for modulating the information extracted by the data editing means and transmitting the information by a specific low power radio, and a wireless transmitting device transmitted from the wireless transmitting device. Based on a plurality of information including a radio receiving means for receiving and demodulating radio waves and demodulated water depth information, fish school depth information and fish school quantity information, using a history of water depth information One or more reception display terminals having a display means for displaying the seabed line on the surface and displaying fish detection information including the water depth, the fish school depth, and the fish school volume on the screen thereof. .

The fish finder information wireless transmission display system according to claim 2 is the fish finder information wireless transmission display system according to claim 1, wherein the digital data output from the fish finder is NMEA data compliant with the NMEA standard. It is characterized by being.

A fish finder information wireless transmission display system according to a third aspect is the fish finder information wireless transmission display system according to the first or second aspect, wherein the data editing means further includes the extracted water depth information at predetermined time intervals. It is characterized in that smoothing processing by interpolation is performed according to the water depth value obtained in.

In the radio transmitting apparatus according to a fourth aspect of the present invention, each piece of information is represented by a numerical value, and water depth information, fish school depth information, and fish school quantity information are input from a group of fish detection information that is serially input with digital data every predetermined time. It is characterized in that it has a data editing means for extracting a plurality of information including the above, and a wireless transmission means for modulating the information extracted by this data editing means and transmitting it by a specific low power radio.

According to a fifth aspect of the present invention, there is provided the wireless transmission device according to the fourth aspect, wherein the digital data of the fish hunting information group is NMEA data complying with the NMEA standard.

The wireless transmission device of claim 6 is the same as in claim 4,
In the wireless transmission device described in the item (1), the data editing means further performs a smoothing process by interpolation on the extracted water depth information according to a water depth value obtained every predetermined time.

According to another aspect of the present invention, the receiving and displaying terminal is arranged serially at predetermined time intervals and receives and demodulates radio waves modulated with a plurality of information including water depth information, fish school depth information and fish school quantity information. Receiving means and demodulated depth information,
Based on a plurality of information including the fish depth information and the fish amount information, the seabed line is displayed on the screen using the history of the water depth information, and the fish detection information including the water depth, the fish depth, and the fish amount is also displayed on the screen. It is characterized by having display means for displaying by numbers or symbols.

The receiving and displaying terminal according to claim 8 is the receiving and displaying terminal according to claim 7, for outputting a plurality of information including the demodulated water depth information, fish school depth information and fish school quantity information to the outside. It is characterized in that an output terminal of is provided.

According to the present invention, a fisherman such as a fishing passenger of a recreational fishing boat can detect the fish locating information such as the position of the fishing ground, the water depth (including the history of the fish), the fish depth, the amount of fish, the water temperature, etc. It becomes possible to know in real time.

Further, the image is received and displayed on the display terminal by simulating a normal fish finder image, that is, a screen which is sequentially scrolled, and each information at that time is displayed as a numerical value and / or on the screen.
Or, since it is displayed with a symbol, good visibility can be obtained.

Further, it is possible to utilize the fish finder information by simply connecting the connectors to all the fish finder equipped with the NMEA connector without any modification.

Further, it should be displayed on the reception display terminal of the fisherman from a fish hunting information group in which digital data is serially output at predetermined time intervals and the information is represented by numerical values, typically NMEA data. Since only the data is extracted, the data is edited, and then the data is transmitted, it is possible to reduce the data processing in the reception display terminal, which is required to be simple, small, and inexpensive. Therefore, it is possible to configure the reception display terminal carried by an individual fishing customer or the like in a small size and at a low cost. In addition, an external output terminal is provided on the receiving and displaying terminal so that water depth information,
Since a plurality of information including the fish school depth information and the fish school quantity information can be output to the outside, the fish school detection information particularly created by the present invention can be used for other purposes.

When the output interval of NMEA data is long (for example, every 2 seconds, every 4 seconds), the data editing unit extracts the necessary data and performs the interpolation processing of the water depth data to smooth the water depth. And then send. Therefore, it is possible to display a smooth fish finder image without increasing the data processing load associated with the interpolation processing in the reception display terminal.

The fish finder information is transmitted from the wireless transmission device by the specific low power radio. Since it is only necessary to transmit the fish school detection information to the fishing passengers in the same recreational fishing boat, the distance for that is about 20 to 30 m, and there is no problem in transmission by the specific low power radio. Then, by transmitting by specific low power radio, the fish locating information can be wirelessly and arbitrarily transmitted to all the fishermen who need it without being restricted by the Radio Law as in the conventional example. You can

[0022]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described in detail below with reference to the drawings.

FIG. 1 is a diagram showing a system configuration of a fish finder information wireless transmission display system of the present invention, FIG. 2 is a diagram showing a configuration of a wireless transmitter thereof, and FIG. 3 is a configuration of a reception display terminal thereof. FIG. Further, FIG. 4 is a diagram showing a configuration of a display unit in the reception display terminal.

In FIG. 1, this system is installed in a boat such as a recreational fishing boat (hereinafter referred to as a recreational fishing boat), and is equipped with a fish locating device 10 provided in a steering room and the like. For example, a wireless transmitter 20 that receives fish detection information from the fish detection device 10 and wirelessly transmits it, and an occupant such as a fishing passenger in a recreational fishing boat (hereinafter referred to as a fishing passenger) are carrying the received data. Receiving display terminal 30 to display,
It consists of 30A. The reception display terminal may be carried by each individual fishing passenger, or may be provided at various places on the ship, and therefore, the number thereof may be any number,
There is no limit to the number.

The fish finder 11 is equipped with a transmitter / receiver, a signal transmitter / receiver, a display device, etc., which are necessary for ordinary ultrasonic fish finder, and is connected to the GPS antenna 13 and the water temperature sensor 12 to detect the position and other factors. The fish finder 10 includes a GPS receiver for acquiring GPS information, a water temperature detection device for measuring the water temperature, and the like.

This fish finder has an NMEA connector for outputting NMEA data.
By connecting the NMEA connector and the wireless transmitter 20, NMEA data is supplied to the wireless transmitter 20.

The NMEA standard is a standard established by the United States Marine Electronics Association to carry out mutual data transmission between electronic devices mounted on ships. It defines signal conditions, data transmission protocol, timing, etc.

The NMEA data conforming to the NMEA standard is now widely used in marine electronic devices such as fish finder, and is interconnected between marine electronic devices that handle information digitally. And used for data communication. Since this standard is determined to support unidirectional transmission of serial data from a sender (talker) to a plurality of receivers (listeners), it is possible to transmit fish locating information to a plurality of sources as in the present invention. It is particularly suitable for application to a system for wirelessly transmitting and displaying to a fisherman.

NMEA output from the fish finder 10
In addition to the data required as GPS specifications, water depth, water temperature, and other fish-finding information as standard specifications, the data is not necessarily required for displaying fish-finding images, such as bow direction, wind direction, wind speed, own ship data, and other data. Various data are included in digital numerical data. Also, for example, GP
The S information also contains information necessary for displaying position information such as latitude and longitude, speed information, time information, and data not needed for displaying GPS almanac data, GPS ephemeris data, standard time fish-finder video, and the like. ing.

The information on the fish school depth and the fish school quantity to be displayed as the fish school detection information is not specified as the standard of NMEA data, but a specific code for that purpose is added upon application. The fish finder 11 converts the fish depth and the fish amount into numerical data by a normal echo signal reception process, and includes the information on the fish depth and the fish amount in the NMEA data as optional data using a given specific code. .

As described above, the NMEA data output from the fish locating apparatus 10 includes not only the data required to be displayed as the fish locating information, but also many data unnecessary for the display. Modifying these data so that they are selectively output for display on the fish finder 10 cannot be considered in consideration of their use for other purposes, so all the NMEA data that is output is input to the wireless transmitter 20. Will be.

Referring to FIG. 2, in the wireless transmitter 20, first, only the data necessary for displaying as the fish locating information is extracted from the NMEA data input by the data editing unit 21. Data required for this display include GPS information (latitude / longitude position information, date / time information, ship speed information), water depth information (deep-water corrected depth value), water temperature information, fish school depth. Information (fishing depth corrected for stuttering) and fish volume information are required. These pieces of information are examples, and information that is not displayed may be deleted from these pieces of information, or may be added if there is additional information to be displayed. The data format of the extracted fish school detection information will be converted into an appropriate data format for transmission and output.

Further, N output from the fish finder 10
The MEA data is output at predetermined time intervals. This output interval depends on the model of the fish finder, but for example, the latest one is often one second, but there are also two and four second intervals. When displaying on the receiving / displaying terminal 30, in order to improve the display quality, it is necessary to interpolate the water depth data, especially for those having a long output interval, to perform a smooth display. In this case, the interpolation process requires a CPU capable of high-speed processing, and the data editing unit 21 uses the data editing unit 21 because the number of processes in the reception display terminal that is battery-powered and is required to be small and low in price is minimized. Interpolation processing (smoothing processing) is performed.

When the interpolation process is performed, the data up to the previous time and the data up to this time are referred to obtain the interpolated data between them. Therefore, the data on which the interpolation process is performed (for example, the water depth data) is displayed with a delay of the time of the output interval of the NMEA data, but the boat speed during fishing is usually low (for example, the tide). From the speed of flow), it does not matter on the actual display. The extent to which this interpolation processing is performed for NMEA data having an output interval is appropriately determined in consideration of the ship speed, the seabed condition, and the display quality. The system of the present invention can also be used in lakes and rivers, and in that case, the seabed is to be read as the waterbed.

In the modulation section 22, the fish detection information that has been subjected to data extraction and smoothing processing in the data editing section 21 is input and is subjected to, for example, FSK (frequency shift keying) modulation, and is transmitted from the wireless transmission section 23 as digital serial data. It is transmitted by specific low power radio. The data to be transmitted need only be effectively transmitted in the recreational fishing boat, and thus may normally reach the range of 20 to 30 m.

Regarding the specified low power radio, the application, the type of radio wave, the frequency, the antenna power, etc. are stipulated in the Radio Law Enforcement Regulations (Article 6, Paragraph 4, Item 2), and if the prescribed requirements are satisfied. Like a cordless phone, it can be used without requiring a license for a wireless station. The usage pattern of the present invention corresponds to a telemeter that automatically displays or records the measurement result of a measuring device at a remote location using radio waves.

In this case, one of the above-mentioned prescribed requirements is that the frequency is 429.175 MHz or higher and 429.7375 MH.
Below z and an integer multiple of 12.5 kHz (that is, frequency of 400 MHz band), antenna power is 0.01
Below W, it is a one-way communication system or the like, and under this condition, it can be sufficiently used for wireless transmission in the recreational fishing boat. Therefore, in the present invention,
The specific low power radio is supposed to be used.

In the present invention, since it is sufficient that short-distance wireless communication of about 30 m is possible, Bluetooth (Bl) which is a short-distance wireless communication system using the frequency of 2.4 GHz band is used.
uetooth) can be used. From this, the specified low power radio of the present invention includes Bluetooth in addition to those specified in the Radio Law Enforcement Regulations.

With reference to FIGS. 3 and 4, the reception display terminal 3
At 0, the fish locating information wirelessly transmitted from the wireless transmitter 20 is received by the wireless receiving unit 31, and the demodulation unit 32 performs FSK.
It is demodulated and supplied to the display unit 40 via the data output unit 33. The display unit 40 displays a simulated fish finder display image based on the transmitted fish finder information.

In addition to supplying the fish finder information to the display unit 40, the data output unit 33 also outputs the fish finder information from an output terminal provided in the reception display terminal 30 for external use. The output format for external use may be the same data format as that supplied to the display unit 40, or may be the data format reconverted to the NMEA data format. The receiving and displaying terminal 30A and other receiving and displaying terminals are similarly configured.

The display unit 40 receives input data consisting of GPS information (latitude / longitude position information, year / month / day and time information), ship speed information, water depth information, water temperature information, fish school depth information, and fish school quantity information. A display control unit including an interface 41, a CPU 42 that controls display, a RAM 43 used as a display memory, a work memory, and other memories, and an LCD driver 44, and an LCD display unit 4
5, and a ROM (not shown) storing a control program and the like. Since the display unit 40 is a main part of the reception display terminal, it is preferable that the display unit 40 be particularly small, lightweight, and inexpensive, and not only an LCD but also an LED or other suitable display for carrying can be used. .

Next, the operation of the present invention will be briefly described with reference to FIG. 5 showing the display screen of the reception display terminal.

NMEA data is sent from the fish finder 10 to the radio transmitter 20 at regular intervals (eg, every second).
Supplied serially as numerical digital data. In the wireless transmitter 20, only the fish-finding information necessary for displaying in the data editing unit 21 is extracted, and if necessary, the depth data is subjected to smoothing processing, modulated by the modulating unit 22, and modulated by the modulating unit 22. To the reception display terminal 30 and the like in the recreational fishing boat by the specified low power radio.

In each reception display terminal 30 etc., the wireless reception unit 3
1, and demodulation section 32 demodulates to obtain fish school detection information and supplies it to display section 40 via data output section 33.

On the LCD display unit 40, as shown in FIG. 5, the seabed line B indicating the depth of the seabed (water depth) and the history of the fish school depth and the fish school from the past to the present are displayed on the screen. Scroll from right to left on the drawing. The speed of this scroll depends on the set depth range R of the fish finder 11.
by.

Although the seabed line B is displayed on the screen so as to have a predetermined width, the uppermost part of the seabed line B represents the water depth at that time, and the width is a normal fish finder. It is simulated so that it is displayed like the image of, and is set to a predetermined width according to the water depth range R.

The fish school quantity and the fish school depth are represented by the fish symbol F, and the position of the fish fish symbol F in the depth direction and the size of the fish symbol F are displayed in accordance with the fish school depth and the fish school volume. To be done. The size of the school of fish is divided into, for example, a plurality of stages (3 to 5 stages), and the size of the fish symbol F is gradually increased according to the stages. Further, the fish school depth is displayed as a numerical value (for example, 50 m) in the fish symbol.

Further, on the screen, the latest fish locating information at that time, in this example, the latitude / longitude of the own ship position, the date and time, the ship speed (eg, 1.2 KTS), the water temperature (eg, 15) ．
(2 ° C.) is displayed, and the sea bottom water depth, which is the most necessary information for the fisherman, is displayed as a number (eg, 64 m) in addition to the display of the seabed line B.

In this way, the display control for displaying on the LCD display unit 45 is performed by the CPU 42, the RAM 43, the LCD driver 44, etc. based on the fish finder information input by numerical data.

6 (a) and 6 (b) exemplify the effect of the smoothing process on the water depth data performed by the data editing unit 21 of the wireless transmitter 20 together with the water depth data on the screen of the display unit 45. It is shown in.

FIG. 5A shows an example in which the smoothing process is not performed when the input NMEA data is at 4-second intervals. In this example, the ship speed is 1.2KT
Since it is S, the recreational fishing boat will travel about 2.5 m in 4 seconds. Since the same water depth is displayed for 2.5 seconds during the 4 seconds, the seabed line becomes jagged as shown in the figure, which is different from normal fish finder images , Unable to display the actual depth change.

On the other hand, in FIG.
The depth data in the NMEA data input at intervals of two seconds is interpolated with multiple data to create smooth depth data, which is sent to the receiving and displaying terminal as fish school detection information. It is possible to display a depth change similar to that of a fish finder image.

In this example, two pieces of interpolation data are inserted between the depth data, but any number of pieces of interpolation data can be inserted.

According to the present invention, the interpolation processing of the water depth data and the extraction of necessary fish school detection information from the NMEA data can be performed to provide an appropriate fish search image to the reception / display terminal. For this reason, the necessary data processing is performed on the wireless transmitter side, and the processing on the receiving and displaying terminal side is kept to the minimum necessary. Therefore, the receiving and displaying terminal can be constructed in a small size, weighs inexpensively, and is portable. It is particularly suitable for use.

[0055]

EFFECTS OF THE INVENTION According to the present invention, a fisherman such as a fishing passenger of a recreational fishing boat can hold, at his or her own, the position of the fishing ground, the water depth (including its history), the fish depth, the amount of fish, the water temperature, etc. It becomes possible to know detection information in real time.

Also, the image is received and displayed on the display terminal in a display form simulating a normal fish finder image, that is, a screen that is sequentially scrolled, and each information at that time is displayed as numerical values and / or numbers on the screen.
Or, since it is displayed with a symbol, good visibility can be obtained.

Further, the fish finder information can be utilized by simply connecting the connectors to all the fish finder equipped with the NMEA connector without any modification.

Further, digital data should be displayed on the reception display terminal of the fisherman from the fish detection information group, which is serially output at predetermined time intervals and whose information is represented by numerical values, typically NMEA data. Since only the data is extracted, the data is edited, and then the data is transmitted, it is possible to reduce the data processing in the reception display terminal, which is required to be simple, small, and inexpensive. Therefore, it is possible to configure the reception display terminal carried by an individual fishing customer or the like in a small size and at a low cost. In addition, an external output terminal is provided on the receiving and displaying terminal so that water depth information,
Since a plurality of information including the fish school depth information and the fish school quantity information can be output to the outside, the fish school detection information particularly created by the present invention can be used for other purposes.

When the output interval of NMEA data is long (for example, every 2 seconds, every 4 seconds), the data editing unit extracts the necessary data and performs the interpolation processing of the water depth data to smooth the water depth. And then send. Therefore, it is possible to display a smooth fish finder image without increasing the data processing load associated with the interpolation processing in the reception display terminal.

The fish finder information is transmitted from the wireless transmission device by the specific low power radio. Since it is only necessary to transmit the fish school detection information to the fishing passengers in the same recreational fishing boat, the distance for that is about 20 to 30 m, and there is no problem in transmission by the specific low power radio. Then, by transmitting by specific low power radio, the fish locating information can be wirelessly and arbitrarily transmitted to all the fishermen who need it without being restricted by the Radio Law as in the conventional example. You can

[Brief description of drawings]

FIG. 1 is a diagram showing a system configuration of a fish finder information wireless transmission display system of the present invention.

FIG. 2 is a diagram showing the configuration of the wireless transmitter.

FIG. 3 is a diagram showing a configuration of the reception display terminal.

FIG. 4 is a diagram showing a configuration of a display unit in the reception display terminal.

FIG. 5 is a diagram showing a display screen of a reception display terminal.

FIG. 6 is a view for explaining the action of smoothing processing on water depth data.

FIG. 7 is a diagram showing a configuration of a conventional wireless transmission type fish finder.

[Explanation of symbols]

10 Fish finder 11 fish finder 12 Water temperature sensor 13 GPS antenna 20 wireless transmitter 21 Data Editing Department 22 Modulator 23 Wireless transmitter 30, 30A reception display terminal 31 Radio receiver 32 demodulator 33 Data output section 40 Display 41 Input interface 42 CPU 43 RAM 44 LCD driver 45 LCD display

Continued front page    (72) Inventor Masayoshi Tanaka             5-1-1 Shimorenjaku, Mitaka City, Tokyo Japan             Wireless Co., Ltd. (72) Inventor Kazuo Hirano             3-14-16 Maesawa, Higashi-Kurume City, Tokyo             Within Iwa Seiko Co., Ltd. F term (reference) 5J083 AB01 AC29 AC30 AD06 AD22                       AE04 EA08 EA20 EA27 EA31

Claims (8)

[Claims] 1. A fish finder information wireless transmission display system used in a ship, wherein the fish finder information group in which each information is represented by a numerical value is serially output as digital data at predetermined time intervals. A data editing means for inputting a fish hunting information group from the fish hunting device, and extracting a plurality of information including water depth information, fish flesh depth information and fish flesh amount information from the fish hunting information group,
A wireless transmission device having a wireless transmission device for modulating the information extracted by the data editing device and transmitting the information by a specific low-power wireless; a wireless reception device for receiving and demodulating an electric wave transmitted from the wireless transmission device; Based on a plurality of information including the water depth information, the fish depth information and the fish amount information, while displaying the seabed line on the screen using the history of the water depth information,
A fish finder information wireless transmission display system, comprising: one or more reception display terminals having display means for displaying fish finder information including water depth, fish school depth, and fish school amount on its screen. 2. The fish finder information wireless transmission display system according to claim 1, wherein the digital data output from the fish finder is NMEA data compliant with the NMEA standard. 3. The school of fish according to claim 1, wherein the data editing means further performs a smoothing process by interpolation on the extracted water depth information according to a water depth value obtained every predetermined time. Wireless detection and display system for detection information. 4. Each piece of information is represented by a numerical value, and a plurality of pieces of information including water depth information, fish school depth information, and fish school quantity information are extracted from a fish school detection information group that is serially input as digital data at predetermined time intervals. And a wireless transmission unit that modulates the information extracted by the data editing unit and transmits the information by a specific low-power wireless. 5. The wireless transmission device according to claim 4, wherein the digital data of the fish detection information group is NMEA data compliant with the NMEA standard. 6. The radio according to claim 4, wherein the data editing means further performs a smoothing process by interpolation on the extracted water depth information according to a water depth value obtained every predetermined time. Transmitter. 7. A radio receiving means for receiving and demodulating radio waves that are arranged serially at predetermined time intervals and are modulated with a plurality of information including water depth information, fish school depth information and fish school quantity information,
Based on multiple information including demodulated water depth information, fish depth information, and fish volume information, a seabed line is displayed on the screen using the history of water depth information, and the water depth, fish school depth, and fish volume are also displayed on the screen. A receiving and displaying terminal characterized by having display means for displaying fish hunting information including: 8. The reception device according to claim 7, further comprising an output terminal for outputting a plurality of information including the demodulated water depth information, fish school depth information and fish school quantity information to the outside. Display terminal.