Ocean security and visualization system

Abstract

To provide novel ocean security, an information gathering system and a sensor system that enable sensing on and in the sea and further at the bottom of the sea to grasp even phenomena in the sea more.SOLUTION: A method for gathering signals from on and in the sea and from the bottom of the sea by the use of a sensor system includes: providing sensors so as to protect a submarine cable large in information amount; detecting various marine information by the sensors to visualize situations in the sea; and further placing the sensors in the sea and always obtaining information through the optical cable so as to protect safety on the land and sea through reactions and communication on the sea and the land.SELECTED DRAWING: Figure 5

Description

[Technical field]

[0001] There are several methods of underwater communication that use sound waves, lasers, light, etc. Ultrasonic waves are used, but the distance is limited and the transmission speed and frequency of sound are lower than that of radio waves, so the amount of information transmitted is small. Furthermore, there are still very few communications systems that cover the vastness of the Earth, 70% of which is covered by ocean. It is possible that the submarine cables that have been laid with great effort may be cut accidentally or intentionally. This too must be prevented. The optical fiber cable itself and the sensor are certainly inexpensive, but because they use mechanical vibration, bending, and periodic reflection, they are prone to unstable elements, noise, and cannot be used for stable sensing over long distances. Therefore, they are difficult to use as main cables. However, they may be usable for some sensors. The ID signal from the source of this invention cannot be received, and the CO of the cavitation, screw sound, and environmental information 2 , C.H. 4 , O 2 It is not possible to sense temperature, radiation, contamination, etc., so it is necessary to sense the above phenomena, and to protect the optical cable while making the above sensing possible. Therefore, not only can sensing be performed using optical cables, but many other pieces of information can also be obtained, and not only can conventional optical cables, which is one of the subjects of this invention, be protected, but it can also be used to save lives, etc., and by using this to obtain information about the ocean, it has the advantage of being able to obtain a lot of information about the ocean as well as visualize the ocean. The above method not only enables the defense of undersea cables, but also increases the added value of the undersea cables. It would be good if it could be visualized in the same way as on land. [Background technology]

[0002] Undersea cables are an important communications network, with 99% of intercontinental communications carried out by them. The main body of the cable is made of thin wires made of quartz glass, and optical signals are transmitted as pulse signals, with repeaters (amplifiers) installed approximately every 90 km to compensate for attenuation. As the amount of information increases, the capacity of the cables is also increasing. Currently, approximately 400 cables are laid between continents, and laying these cables requires enormous costs. At its deepest point, the cables are laid continuously, 8,000 meters beneath the ocean, so in the event of a break or accident, repairs must be made, but it is impossible to locate these points, prevent them from happening, or pull them up to repair them, as they are in the invisible ocean. In recent years, there have been frequent maritime accidents, and there are issues regarding the protection of undersea cables that have been laid with great care, as well as intrusions and invasions of territorial waters. There are still many unknown areas under the sea and in the deep sea. Pollution on land is connected to the sea, and the marine environment has a major impact on land. It is important to improve and clarify this. [Prior art documents] [Patent documents]

[0003] (Appendix 1) References from Oki Electric and NEC reports, etc. Summary of the Invention [Problem to be solved by the invention]

[0004] By protecting undersea cables according to the present invention, not only will most intercontinental and transoceanic communications, i.e., international communications, be carried out safely, but the cables will also be protected, and furthermore, the conditions under the sea will become clearer, and the conditions under the vast sea and the seabed, which have been unknown until now, will become much clearer. Humans are planning to leave the Earth and go to the Moon and Mars, but the oceans remain unexplored, with no ships, airplanes, helicopters, or submarines sunk in the Earth's oceans. The behavior of animals and plants that live in the ocean is also poorly understood. Typhoons are becoming larger due to global warming, and pollution is causing problems such as red tides and plastic waste; land and the ocean are linked. This will help protect the undersea cables of information networks, which are the lifeline of everyday life. More information will be available from the data obtained by this invention, as well as from undersea cables and unmanned submersibles that will be laid in the future. As more information about the seabed is obtained, the development of many resources will be promoted. As described above, it is useful not only for providing information on what is underwater and on the sea, but also for providing information on the safety of life on land and the natural circulation system. [Means for solving the problem]

[0005] It has been explained that the location of the acoustic transmitting device can be detected by a ship at sea or an unmanned or manned submersible that receives the vibration frequency that generates the ID signal of the prior invention or the ID signal emitted from the acoustic device. It is difficult to find a transmitting signal in the vastness of the ocean. However, undersea cables have been laid on the ocean floor and will continue to be laid in the future. Currently, more than 400 cables totaling approximately 1.2 million kilometers have been constructed. In the future, demand will further expand, including in developing countries with large populations, and a large growth rate is expected as demand for larger capacity will be required soon. In addition, when it is difficult to use the existing cable, the purpose can be achieved by laying a new cable or a sensor cable along the existing cable. In the future, the cable for seabed information can be laid in new or updated locations. Furthermore, when an accident occurs in which an undersea cable is cut, it is necessary to identify the cause, where it occurred, and how it occurred, and to prevent such an accident. For this purpose, if we can analyze and identify the screw sounds of ships, the dragging sounds of anchors and fishing nets, the screw sounds of passing ships, engine sounds, rotation sounds, cavitation sounds, etc., we can identify the perpetrators, and by tracking the information from each sensor attached to each repeater and branch cable, we can identify and track the transition of ships, submarines, stealth vehicles, animals, etc. It will also be possible to prevent such accidents from occurring in the first place. As an example, by configuring the repeater amplifier, repeater and sensor location IDs to be communicated to a monitoring station via cables, it becomes possible to collect not only land-based communications (and power transmission) but also a large amount of undersea information using sensors and transmitting / receiving equipment, and to set up a global monitoring function to protect sea safety, traffic safety, air safety, etc. Also, by knowing the marine environment, such as low pressure systems, typhoons and hurricanes, it becomes possible to ensure the safety of life on land and reduce natural threats. Effect of the Invention

[0006] 1. Various information can be transmitted and received using cables and sensors laid on the seabed. 2. First, the exact location of the cable in the ocean will be known. 3. You will be able to be vigilant to prevent the cable from being cut. 4. You can find out what caused the cable to be cut. 5. Various sensors can be attached to places where cables are interrupted, such as repeaters, or to other parts that may be installed separately, making it possible to learn about underwater conditions. 6. By providing a branch to the repeater, various sensors such as vibration, sound waves, and video (camera) can be attached here. Of course, it is also possible to use independent cables and sensors and place repeaters in various places. 7. By attaching an ID signal indicating the location to the cable position or repeater position, it becomes possible to detect the direction by multiple receptions from ships or submarines underwater or on the surface of the water, or by using directional antennas or underwater radar. This makes it possible to 8. Rather than simply using it as a communications cable connecting continents and land, it will be possible to use it as a transmitting and receiving base that detects and transmits information from under the sea using sensors and transmitters and receivers. 9. It is possible to detect and track each sensor signal so as to maintain communication with any underwater activity (persons lost) that may occur for some reason. 10. It will be possible to discover, track, and communicate directly and indirectly with underwater plants, animals, and minerals. 11. It can also detect the movement of undersea troughs. 12. It can detect abnormal vibrations to predict earthquakes and report their location and predicted magnitude. If a seismometer has already been installed and data is being collected via cable, it can also collect data underwater. 13.Furthermore, by simultaneously acquiring data on ocean temperature, CO2, CH4, O2, ocean currents, pollution, and depth related to water pressure, which all have an impact on the global environment, it is possible to obtain information on the state of ocean water in real time, making it possible to predict various phenomena occurring underwater, on the sea, and on land. Typhoons, rainfall, marine pollution, and other phenomena are closely related to land-related phenomena, and this information can be used as a new source of information about changes in the ocean and their impacts on land that have been overlooked until now, especially in the deep sea. The technology of this invention will enable many applications, such as the above, and will have many further applications, which will be useful for maritime safety and clarification, and even for life on land. [Brief description of the drawings]

[0007] [Figure 1] FIG. 1 shows a conventional undersea cable installation. [Diagram 2] FIG. 2 shows the configuration of a conventional submarine cable. [Diagram 3] Figure 3 shows a case where a sensor for detecting the condition of the seabed is attached to a branch off from a cable repeater. [Figure 4] FIG. 4 shows the case where a separate sensor cable is laid along the undersea cable. [Diagram 5] FIG. 5 shows a method of collecting signals from the sea surface, underwater, and seabed using the sensor system of the present invention in order to track ID signals emitted from underwater moving objects, humans, ships, submarines, aircraft, animals, etc., and to determine their tracks, etc. [Figure 6] FIG. 6 shows a method for sensing not only IDs but also various other signals using a sensor-equipped transducer attached near a repeater and signals such as sound waves, radio waves, and light. [Figure 7] FIG. 7 shows the general structure of an unmanned exploration submersible and its structure to withstand water pressure. [Figure 8]FIG. 8 shows an embodiment of the structure of an acoustic vibration sensor that can operate even in the high water pressure of the deep sea, and conversely, a method of converting acoustic vibrations into electricity. [Figure 9] FIG. 9 shows receiving signals from each sensor to identify the location of a particular signal and then analyzing the time of arrival of the received signal to determine the source location and transmitting the signal through a cable. [Figure 10] Figure 10 shows that the position of a target can be read using signals from multiple sensors. It can also capture moving targets. Also, by using a mesh-like sensor, it is possible to capture the target's position over a surface. [Figure 11] FIG. 11 is an explanatory diagram of the content of whether the signal sounds, vibration sounds, etc. received by the sensor are automatically analyzed by AI or judged by a human. [Figure 12] FIG. 12 shows that when transmitting a sensor signal, the sensor signal can be transmitted independently, transmitted by frequency multiplexing, or transmitted by laying a separate cable. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0008] The present invention will be described with reference to the drawings.

[0009] FIG. 1 is a diagram for explaining a conventional embodiment of a submarine cable for a different purpose, which is a communication network already laid underwater, in relation to the marine information gathering method using vibration waves and sound waves of the present invention. As shown in the figure, the cables are only used for intercontinental communication, and the ocean floor is merely laid there for crossing. It is an uneasy situation where we do not know where they will be cut in the vast ocean, and although they are valuable underwater, they are not of any use underwater. Not only underwater cables, but also underwater troughs and pipe power cables currently laid are the same.

[0010] Figure 2 shows a conventional method of branching the cable using a repeater. This method also passes through the sea and is only used for land communications.

[0011] FIG. 3 shows a case where the repeater for marine communications of the present invention is used for branching. Figure 3(a) shows a case where the sensor signal is superimposed in the main cable, the sensor unit is installed in the repeater, and the repeater is shared. This method complicates the circuits and multiplexer unit for important intercontinental communication, and also complicates the division of responsibility between the intercontinental communication and the underwater sensor unit, so in some cases it may be better to initially use a part of the repeater as shown in Figure 3(b), but basically configure it with two separate cables. Figure 3(c) shows an example of the exterior when the sensor cable is branched at a repeater. The two cables are laid in parallel and wound around a drum or roller, making installation easy. They are integrated at the repeater, but are separated so as not to affect the main line. FIG. 3(d) shows a cross-sectional view of an embodiment of the exterior when the main cable and the branch cable are branched using a repeater.

[0012] Figure 4 shows a case where an undersea cable, an information cable for transmitting sensor signals and information, and a main undersea cable are laid separately and in parallel. The location of the object can be determined by sensing which sensor the object is closest to. To determine the location of a specific signal, the signal is received from each sensor, and the arrival time of the received signal is analyzed to determine the source location, and the signal is then transmitted via a cable.

[0013] Figure 5(a) shows a mechanism for automatically determining, using AI, which sensor the signal came from when the target signal is received at a ground station (if reception is possible at either ground station A or B), as well as the time and strength of the signal, etc. On the other hand, it is also possible for the monitor to directly hear the received signals and alarms. When humans listen to it, the digital signal is further converted to an analog signal and can be heard. In reality, there are many sensors and repeaters, but for the sake of explanation, the paper shows the case of five. The object is closest to sensors #1 and #2. The signal arrives with a delay at sensors #3 and #4, so the arrival time from the speed of sound in the ocean and the arrival time and phase of the signal from #1, #2, #3, and #4 due to this time difference make it possible to determine the ID, type, status, position, etc. of the object. FIG. 5(b) shows that the sensors and repeaters can be distributed and installed as needed. For example, in areas close to land, there is a lot of human activity such as leisure, and so there is a lot of information. Therefore, many sensors are placed, which makes it easier for attenuation and reflection to occur, and it is not possible to install repeaters at equal intervals. Furthermore, in tropical and subtropical regions where typhoons and low pressure systems occur, it is necessary to measure ocean water temperature in different layers of water depth. This will enable the water temperature to be measured from the ocean floor via a sensor cable, allowing the mechanisms of rising water temperature, evaporation, and the generation of rising air currents to be constantly monitored, helping to predict typhoons on land and minimizing damage. Although we know that greenhouse gases such as CO2 and CH4 are causing temperature rises, we do not yet know the exact ocean water temperature, nor do we know the effects of ocean currents. The aim is to obtain as much information as possible. Information can be collected in three dimensions, including Figure 9.

[0014] Figure 6(a) shows an example of a system in which satellites in the sky, ships on the sea, submersibles in the sea, and sensors on the seabed form an ocean network using optical cables to detect and communicate, for example, if an aircraft has an accident and sinks, if a person has been involved in a maritime accident and sank, or if a submarine or other vessel has sunk. Currently, when a ship sinks, the location and passengers on board remain unknown. In the case of airplane or helicopter accidents, people on land who are swept away by the tsunami remain unknown. Submarines, which are considered enemies, are only tracked by patrol aircraft, but in the future, they will be tracked by a network that covers the underwater, undersea, above the sea, and in the air. A signal is sent to a base station on land via an optical cable with a sensor laid on the seabed, where the sound wave signal is converted to digital and then optically modulated so that it can be received by the base station. It can be received at both base station point A and base station point B in the diagram, but you can choose either one. Figure 6(b) shows a case where optical, radio and sonic stations are installed at intervals of 100m to 200m, like terrestrial cellular stations, to protect and monitor important routes. When using lasers or high-power radio waves, the limit is thought to be 100m to 200m at best, but optical and radio waves can collect large amounts of information and provide accurate information, so they can be used on important routes. The purposes of important monitoring are to prevent undersea cables from being cut, to monitor suspicious ships and animals, to monitor valuable marine life, to monitor trough movement, changes and cracks, undersea volcanoes, etc., to prevent accidents on regular ship routes, and to gather information on occurrences.

[0015] Figure 7(a) shows the layout and cross-section of the main engine of an unmanned submersible. If a manned vehicle is used, the inside of the hull is air, so there is a possibility that the hull may be destroyed by water pressure. However, since the present invention is an unmanned submersible, the inside of the hull does not need to be filled with air. Instead, it is filled with pure water or water, and a pressure regulating valve is used to keep the outside and inside pressures the same at all times so that the pressure at depth is balanced and the vessel is not crushed by pressure. An antenna sensor for transmitting signals and tracking is installed at the front of the hull. This antenna is intended to receive signals from the sonic device, and as shown in Figure 7(e), the receiving sensor is located in the center, and it can determine whether the signal is coming from the right or left based on factors such as whether the signal is stronger on the left or right side, the phase, and whether the incoming wave is advanced or delayed. For the upper and lower sensor antennas 3 and 4, it is possible to determine from which side the signal arrived based on the delay in arrival time, etc. Therefore, the direction from which the signal is coming can be determined by the magnitude and phase of the signal obtained not only from the main receiving antenna but also from the left, right, top and bottom antennas, and the source can be found by steering the submarine in the direction from which the signal is coming. If you get close enough, it becomes possible to transmit not only sound waves but also radio waves and light. The communications antenna on top is used to communicate with other ships, aircraft, helicopters, drones in the air, and communication facilities on land when the vessel is surfaced at sea. In addition, valves or pressure regulators (pistons) are installed to ensure that the pressure inside the ship is the same as the pressure at sea, preventing the hull from being destroyed even in deep seas. The sensors, communication devices, control devices, and other equipment installed in the submarine are housed inside the sphere to withstand the pressure of the deep sea. The batteries and fuel for power generation are also housed inside the sphere. In addition, the motor and engine that move the boat are also housed in the sphere, so they will not be destroyed even if they dive into the deep sea. A propeller is attached to the very rear of the boat to propel it forward. For directional tracking, the rudder and blades are operated to track the boat. Figure 7(d) shows that a sphere is pressed evenly from all four sides, and this force is distributed over the surface of the sphere. In general, the vector on the surface of the sphere is divided into rdθ and rsinθdφ, and is maintained evenly, making it difficult to destroy. It is a transducer or a sound collector attached to the base point of the parabolic surface. Similar devices may be used for the other small sound collectors 1, 2, 3, and 4. The strength and phase of the sound reaching each collector determines the direction, allowing the submarine to be steered to reach the source.

[0016] FIG. 8 shows an embodiment of the transmission source in a case where the transmission source is attached to a waist belt and in a case where the transmission source is in the form of a wristwatch. In Fig. 8(a), sound signals or various vibration sounds can be generated by the vibration of a diaphragm D, etc. This diaphragm is composed of a magnet, and an induced voltage is generated in the coil fixed around it. As the diaphragm moves up and down, the voltage and current generate electricity according to the vibration, and a signal can be generated. In the case of a source, the diaphragm moves due to the change in current, generating sound waves. The coil is contained inside the box and is never submerged in seawater. The diaphragm D is isolated from the seawater via the membrane surface, so no marine debris will adhere to it. In the case of power generation elements such as quartz crystal oscillators and barium titanate, voltage is generated by the vibration of the electrodes as shown in Figure 8(b). When voltage is applied, distortion occurs, so mechanical vibrations and coded sound waves can be obtained by the voltage generation and electrical vibration of the oscillator. FIG. 8(c) shows a case where the diaphragm is used for transmission and reception, and FIG. 8(d) shows a case where the diaphragm is used separately for transmission and reception. When used as an oscillator, it must be small and produce a large amplitude output in order to be worn on the body. Any transmitting device can be set to transmit signals at set times, for example 9:00 a.m., 12:00 noon, and 3:00 p.m. (15:00), and can be placed on standby at these times. If an accident occurs and the device is submerged in water, the power will be automatically turned on and a signal will be sent out first. It is desirable to set the transmission to continue for about 10 minutes and then intermittently to allow for early detection and long-term use while maintaining battery voltage. Figure 8(f) shows a method for making it easier for vibrations to be transmitted to the antenna by attaching a vibrating membrane to the tip of the submersible to separate the seawater from the fresh water inside. It is recommended to make the membrane out of a material such as silicone rubber. As mentioned earlier, the water pressure of the outside seawater increases as it gets deeper, so to prevent it from being destroyed, a variable valve is installed to ensure that the pressure of the outside seawater and the pressure of the inside fresh water are equal.

[0017] FIG. 9 shows a system diagram in which a sensor receives a signal emitted from a target, converts this signal into an optical signal and transmits it via an optical cable, and a base station identifies the signal or transmits it to another party. Figure 9(a) shows the transmission source equipped on the target, which is turned on under specified conditions and transmits an ID and distress signal at regular intervals and times. This is received by a receiving device equipped with a sensor, converted into an electrical signal and then converted into an optical signal, which is then transmitted either via a separate dedicated optical cable, or via a multiplexer, superimposed on the optical cable as previously planned, and then transmitted to a ground base station. FIG. 9(b), like (a), shows an embodiment of a system in which a signal transmitted from a source is received, transmitted alone or superimposed using a multiplexer to a base station via an optical cable, and then sorted into various target signals at the base station. This is an explanatory diagram of how, when a ship approaches or, in some cases, sails with the purpose of destroying the cable, the characteristic points and images can be captured at each sensing point, allowing the enemy's invasion to be photographed, and even if the enemy ship is destroyed, the characteristics and location of the enemy ship can be grasped. The sensor part of the sensor cable is installed at a short span and is not related to the length of the repeater of the main cable.

[0018] In Fig. 10(a), an object to be found is designated as Target 1. The analysis method for Target 1 is shown when a signal is received by an array of seafloor sensors and analyzed by a base station. The sensor numbers, distances, and positions of the sensors installed at fixed distances on the optical cable are known in advance. It is also known that the sensor numbers are different, and if the sensor number is n, and a signal emitted from Target 1 is received by the n+1th, n+2th, n-1th, etc. sensors, the time difference for the signal to reach each sensor will differ depending on the distance. In addition, the distances and positions between the sensors installed at fixed intervals are known in advance. As a result, when the signal emitted from Target1 is received by the n+2th sensor, the signal from Target1 needs a distance R n+2 Time t n+2 Similarly, in the case of n+1 point, the distance R n+1 Time t n+1 In the case of n points, the distance R n , time t n Since the position of each sensor is known, and the propagation speed of sound waves in the ocean is also known, it is possible to calculate that even just two points are located on the circumference of the circle. As shown in the figure, the signal reaches four points, allowing for more accurate positioning. In the explanation of this diagram, the cables are arranged in a straight line, so if this line is the z-axis, then R is perpendicular to the line (z-axis).6 It can be seen that the target exists on the circumference of a distance. If this target is stationary, it should be somewhere on the circle. When the vessel is in operation, the speed U2 on the z-axis is observed, and the ship's speed can be analyzed from mechanical sounds from the vessel side due to the Doppler effect. If it is stopped, it is a matter of situational judgement, but it can be determined that it is submerged at two points at a distance R0 to the left or right of the cable on the seabed, at right angles to the cable. Since there are many sensors, the navigation trajectory can be determined and the target's position can be determined. In addition, as shown in the previous figure, signals emitted from the target can be received by sensors installed on unmanned submersibles and ships at sea, making it possible to know the target's position and presence more accurately. Figure 10(b) shows an example of a sensor arrangement in a mesh pattern. When lying on the seabed, it forms a planar two-dimensional sensor. However, since it is impossible to actually wind it up as a cable on a drum or the like and store or transport it, when it is on a land vessel, it is configured as a pipe or cylindrical wire in the x direction by winding the wire in the y direction, and when it is dropped into the water and submerged, it opens up into a flat shape. This shows an example of laying the sensor using a shape memory alloy (plastic, etc.) and a plastic cable that is resistant to bending, for only the support wire in the y direction.

[0019] Figure 11 shows a system that will be equipped with not only a sensor device for receiving sonic devices, including those used in rescue from marine accidents, but also a device that can receive various vibration sounds, including artificially created signals such as the sound of a ship's screw, the sound of an engine rotating or a piston operating sound, cavitation sounds generated by rotation or running, other artificial sounds of man-made machinery, sounds generated by natural activities on the seafloor or underwater, and vibrations and sound phenomena caused by the movement and vibration of seafloor troughs or magma, and will be able to analyze and respond to these signals via cables, relay submersibles, or at a base station or a ship at sea. In response to accidents involving ships, airplanes, and helicopters carrying people, the location of the accident site and individual detection are performed by the generation of ID signals, but the defense of man-made facilities and infrastructure is also important, as is the prediction of earthquakes and tsunamis. Forecasts of typhoons and heavy rains that cause floods and wind damage can also be obtained as important sources of information.

[0020] FIG. 12(a) shows a case where a signal is generated by a sensor unit alone, and FIG. 12(b) shows a method of synthesizing the signal as a superimposed signal on an optical cable via a multiplexer and transmitting it to a ground station, etc., using a vacant channel or a surplus cable of an optical cable connecting other ground stations. This mechanism makes it possible to configure a new sensor network system, and to build a system without changing the existing method. When laying further undersea cables in the future, building them as sensor-equipped undersea cables will kill two or even three birds with one stone, allowing us to build a comprehensive network that will not only enable communications between continents or with isolated islands, but also monitor the state of the sea and the seabed, respond to marine accidents, and protect the undersea cable itself. [Industrial Applicability]

[0021] This invention makes it possible to visualize the ocean to a great extent, something that has previously been impossible to do without searching in the dark, and it will establish a new information network that will be useful not only for utilizing the ocean, but also for ensuring the safety of human life and the lives of living things on land. [Explanation of symbols]

[0022] 1. Source (vessel) 2. Emergency Signal 3. Command 4. Transmitting and receiving equipment (mainly receiving equipment) 5. Maritime Transmission and Reception 6. Repeater 7.Sensor Repeater 8. Main cable (submarine cable) 9. Branch cable (submarine branch cable) 10.Sensor cable 11. Cellar station 12. Land Station (Land Information Station (Ground Station)) 20. Repeater (including exterior) 21. Repeater (uplink from base station) 22. Repeater (downlink from base station) 41a. Transducer sensor (sound collection device) 41b. Omnidirectional sound collection device 41c. Unidirectional parabolic sound collector 61.Independent unmanned submersible (62. Cabled Submersible) 70. Maritime Ship 80. Aircraft, helicopters 90.Satellite The transmitting source and the collecting device will be existing or powerful. The receiving device that has already been developed will be used as much as possible. The transmitting device attached to the waist belt is powerful enough to transmit sound waves and vibrations over long distances. Devices worn around the arm need to be small and lightweight.

Claims

1. A sensor-equipped security and marine information gathering system that enables the use of undersea cables for undersea communications and also constructs a system to prevent accidents on undersea cables.

2. A marine security and information gathering system using vibration waves and sound waves, characterized in that signals obtained from a sensor device equipped with one or any of a large number of acoustic sensors, vibration sensors, light sensors, magnetic sensors, radio wave sensors, temperature sensors, ocean current sensors, and pollution level sensors installed at appropriate intervals are converted from analog signals to digital signals, and the signals are converted into appropriate modulating signals, modulated by light, transmitted through optical fiber cables, and the source of the waves is identified or tracked.

3. A marine security and information gathering system using distress signals, vibration waves, sound waves, light, magnetism, radio waves, temperature, ocean currents, or pollution levels, characterized by laying the sensor-equipped cable in parallel with an undersea cable.

4. A marine security and information gathering system using any of vibration waves, sound waves, light, magnetism, radio waves, temperature, pollution level, and ocean currents, characterized in that the cable with sensors is integrated with the submarine cable at the repeater and can be laid together with the submarine cable.

5. A marine security and information gathering system using vibration waves, sound waves, light, magnetism, radio waves, temperature, ocean currents, or pollution levels, characterized in that the cable with the sensor is used as a branch cable of the main submarine cable, and the obtained signal is superimposed on an empty channel of the line by a dedicated optical fiber or multiplexer of the main submarine cable, and the transmission line is unified.

6. A marine security and information gathering system using vibration waves, sound waves, light, or radio waves, characterized by comparing signals obtained from an acoustic sensor with signals obtained from a vibration sensor or various other sensors, analyzing the signals obtained from each sensor, identifying the signals, and identifying, selecting, discriminating, and tracking objects including people in distress.

7. A marine security and information gathering system using vibration waves, sound waves, light, magnetism, radio waves, temperature, ocean currents, or pollution levels, characterized in that signals obtained from any of the following sensors are analyzed by AI or a computer, and only the necessary signals are extracted.

8. A marine security and information gathering system that uses vibration waves, sound waves, light, magnetism, radio waves, temperature, ocean currents, and pollution levels to capture targets on the seabed and underwater by combining an optical cable system equipped with acoustic sensors, vibration sensors, and various other sensors with an unmanned underwater vehicle.

9. A marine security and information gathering system using vibration waves, sound waves, light, magnetism, radio waves, temperature, ocean currents, and pollution levels, characterized by constructing a network underwater, on the seabed, and above the sea using an optical cable system equipped with acoustic sensors, vibration sensors, and various other sensors, as well as sensors and transmitters / receivers equipped with unmanned submersibles and marine vessels.

10. Marine security and information gathering systems using comprehensive information obtained from acoustic sensors, vibration sensors, optical signal sensors, sonar and video detectors, vibration waves, sound waves, light, magnetism, radio waves, temperature, ocean current detectors, pollution level measuring devices, and sensor devices.

11. A marine security and information gathering system that is characterized by sensing optical transmission lasers, LEDs, with a range of 100m to 200m, radio waves, with a range of several meters to 10m, sound waves, with a range of about 50km depending on the frequency, magnetism, temperature, ocean currents, and pollution levels.

12. A marine security and comprehensive information gathering system using undersea cables and sensor cables that utilize undersea cables that are simply used for communication between land and sea, and that are used for crossing the seabed to obtain various undersea information and transmit sensing information to protect the undersea cables.

13. A marine security and information system characterized by the fact that receivers for receiving underwater sound waves, vibration waves, light, and radio signals are dotted throughout the sea, and the signals from the transmitter are converted to digital form via a transmission path made of optical cables that connect these devices, and then the light is modulated by PSK, ASK, FSK, or TDM time division, transmitted via optical cables, and decoded at a base station or station to identify targets.

14. A marine security and information gathering system that tracks targets using a linear array of sensors installed along a cable.

15. A marine security and information gathering system that is characterized by arranging a plurality of underwater sensor cables and sensors in a planar manner, and enabling tracking of targets passing nearby.

16. A marine security and information gathering system that acquires various underwater data obtained by sensors that detect water temperature, CO2, CH4, O2, and radioactivity through sensor cables installed along the underwater cable or through an underwater cable.

17. A marine security and information gathering system that is characterized by a structure in which water or liquid is stored inside an unmanned submersible vehicle so that the pressure inside the hull and the pressure of the seawater outside are always nearly equal, a pressure regulating valve is installed, and the equipment is housed in an almost spherical shape to protect it from high water pressure.

18. A security and sensor system in which sensors are arranged in a two-dimensional or three-dimensional manner using a sensor cable or undersea cable as a transmission path, and these are connected by a sensor cable, transmitted, and connected to a base station, allowing underwater information to be obtained in three dimensions, making marine phenomena clearer.

Images