阅读说明：本技术 一种海上应急救援系统 (Marine emergency rescue system ) 是由 陆惠萍 于 2020-06-07 设计创作，主要内容包括：本发明公开了一种海上应急救援系统,包括北斗卫星通信系统和GPS卫星定位系统,还包括：多个设有北斗和GPS双模定位模块的终端,均可进行定位,可通过北斗模块向北斗卫星通信系统发送求救信息和定位信息；多个用于救援的救援设备,包含北斗通信模块,可通过北斗卫星通信系统接收救援方案,并按照救援方案进行救援；信息中心,可与北斗卫星通信系统通信,并可通过北斗卫星通信系统实时获得各船载呼救终端和个人呼救终端信息、各救援设备信息和救援方案信息,还可通过其它途径获得救援相关信息资源；指挥系统,与信息中心连接获得各信息并生成救援海图,在救援海图上显示待救援点信息,同时制定救援方案,并根据救援方案进行救援指挥。(The invention discloses a marine emergency rescue system, which comprises a Beidou satellite communication system and a GPS satellite positioning system, and further comprises: a plurality of terminals provided with Beidou and GPS dual-mode positioning modules can be positioned, and distress information and positioning information can be sent to a Beidou satellite communication system through the Beidou modules; the plurality of rescue devices for rescue comprise Beidou communication modules, can receive a rescue scheme through a Beidou satellite communication system and carry out rescue according to the rescue scheme; the information center can be communicated with the Beidou satellite communication system, can obtain information of each shipborne distress call terminal and each individual distress call terminal, information of each rescue device and rescue scheme information in real time through the Beidou satellite communication system, and can also obtain rescue related information resources through other ways; and the command system is connected with the information center to obtain all information and generate a rescue chart, displays the information of points to be rescued on the rescue chart, simultaneously formulates a rescue scheme and carries out rescue command according to the rescue scheme.)

1. The marine emergency rescue system is characterized by comprising a Beidou satellite communication system and a GPS satellite positioning system, and further comprising:

the plurality of ship-borne help calling terminals and/or personal help calling terminals provided with the Beidou and GPS dual-mode positioning modules can be positioned through the GPS and/or BDS, and the Beidou modules can be used for sending help calling information and positioning information to the Beidou satellite communication system;

the plurality of rescue devices for rescue comprise Beidou communication modules, can receive a rescue scheme through a Beidou satellite communication system and carry out rescue according to the rescue scheme;

the information center can be communicated with the Beidou satellite communication system, can obtain information of each shipborne distress call terminal and each individual distress call terminal, information of each rescue device and rescue scheme information in real time through the Beidou satellite communication system, and can also obtain rescue related information resources through other ways;

and the command system is connected with the information center to obtain all information and generate a rescue chart, displays the information of points to be rescued on the rescue chart, simultaneously formulates a rescue scheme and carries out rescue command according to the rescue scheme.

2. Marine emergency rescue system according to claim 1, wherein the on-board distress call terminal and/or personal distress call terminal comprises a housing, a GPS module, a beidou RDSS module, a beidou GPS two-in-one antenna, an AIS module, an AIS antenna, a sensor module, a microprocessor and a power management module, the AIS antenna being arranged outside the housing and connected to the AIS module, the GPS module, the beidou RDSS module, the beidou GPS two-in-one antenna, the AIS module, the sensor module, the microprocessor and the power management module being arranged inside the housing, wherein the beidou GPS two-in-one antenna is connected to the GPS module and the beidou RDSS module, and the microprocessor is connected to the GPS module, the beidou RDSS module, the AIS module, the sensor module and the power management module, respectively; the microprocessor receives and judges the owner state data detected by the sensor module, determines whether to send an alarm call for help or not according to a judgment result, obtains positioning data through the GPS module, the Beidou RDSS module and the AIS module in real time, forms a message for help according to the received data, and transmits the message for help to the corresponding satellite positioning communication module and/or AIS module base station.

3. Emergency rescue system at sea according to claim 2, characterized in that the sensor module comprises one or more of a low voltage detection sensor, a gyroscope, a water contact electrode.

4. A maritime emergency rescue system according to claim 1, wherein the rescue equipment comprises a rescue ship and a rescue helicopter, the rescue helicopter receives the rescue scheme and performs rescue according to the rescue scheme, the rescue ship can receive the rescue scheme and perform rescue according to the rescue scheme, and the rescue ship can automatically make the rescue scheme according to the received information and the field situation and upload the rescue scheme through the Beidou communication module.

5. A maritime emergency rescue system according to claim 1, wherein the relevant information resources include global electronic chart and ocean big data.

6. A maritime emergency rescue system according to claim 5, wherein the rescue sea chart is a dynamic display map at least comprising any one of a wind field, a wave field, an ocean flow field and a water temperature field generated based on a global electronic sea chart and ocean big data, the position of a point to be rescued is dynamically displayed on the dynamic display map in real time, and at least one of the wind field, the wave field, the ocean flow field and the water temperature field of the point to be rescued can be visually seen, so that a rescue scheme is generated according to the position.

7. A maritime emergency rescue system according to claim 6, wherein the dynamic display map is embodied as: and generating a physical or mathematical model of any one of the wind field, the wave field, the ocean flow field and the water temperature field according to the offshore detection data, and sequentially deducing the wind field, the wave field, the ocean flow field or the water temperature field of the whole ocean from the deep sea according to the ocean information data.

8. Marine emergency rescue system according to one of claims 1 to 7, characterized in that the Beidou communication module comprises: the receiving antenna is used for receiving 2491.75+/-4.08MHz Beidou first-generation data signals and/or 1561.098MHz Beidou second-generation data signals; the Beidou receiving circuit is used for amplifying the data signals received by the Beidou receiving antenna and then transmitting the data signals to a Beidou radio frequency channel, and a low-noise amplification three-stage amplifying circuit is adopted, so that the receiving sensitivity is-127.6 dBm; the radio frequency channel is used for receiving a data signal transmitted by the Beidou receiving circuit, and directly outputting data information in a Beidou labeling format to the processor module in the control system through frequency conversion and protocol analysis; meanwhile, the Beidou satellite short message transmitting circuit is used for generating Beidou short message data signals to be transmitted and transmitting the Beidou short message data signals to a Beidou 5W power amplifying circuit; the 5W power amplification circuit is used for amplifying the power of a Beidou short message data signal generated by a Beidou radio frequency channel to 5W and then sending the amplified Beidou short message data signal to a Beidou transmitting antenna; and the transmitting antenna is used for transmitting 1615.68+/-4.08MHz data signals of the Beidou generation.

9. A maritime emergency rescue system according to claim 8, wherein the command system comprises a command machine, and the command machine receives information of the information center and communicates with each rescue device through a Beidou communication module and/or a radio communication mode.

10. A maritime emergency rescue system according to claim 8, wherein the rescue apparatus may include AIS equipment and its information thereon.

Technical Field

The invention relates to the field of emergency rescue communication, in particular to a marine emergency rescue system.

Background

The construction of the ocean empress is an important component of the national development strategy, how to find out the distress of navigation and ocean engineering participators in time and quickly and real-timely position the positions of the distress personnel is an important technical subject for timely and scientifically developing rescue and reducing the loss of personnel and property. In recent years, an AIS system (automatic ship identification system) advocated and popularized by the International Marine Organization (IMO) has become an important basic technical equipment and system for monitoring, managing and servicing ships in sailing ships and coastal countries, China has comprehensively built an AIS shore-based monitoring system covering national coastal and main river main flows, sails in ships of 500 tons or more grades in oceans and rivers, and is completely provided with a shipborne AIS system, and the AIS system has the basic technical characteristics that: any one accords with AIS system communication standard, has the signalling device of autonomic locate function, in AIS VHF signal coverage, can both automatic chain access boats and ships or bank base AIS system, and then by boats and ships or bank base AIS system automatic identification and location. The inventor discovers that in the process of implementing the invention: after a disaster occurs, the scene situation is often complicated due to factors such as the weather, the environment and the limited rescue equipment on the scene, so that the rescue work faces a lot of unexpected difficulties; in view of this, the help seeking performance of the existing rescue terminal device should be continuously improved, so that the rescue workers can know the specific position of the rescue terminal device as early as possible through various channels, and the rescue work can be timely and accurately implemented.

Disclosure of Invention

In view of the existing defects, the marine emergency rescue system provided by the invention has the characteristics of information safety, stable communication, reliable performance and the like, the emergency and rescue platform is high in systematization degree, a rescue scheme is formulated in a targeted manner, the emergency treatment and rescue efficiency is improved, and the overwater safe sailing capacity, the distress alarm capacity and the emergency disposal capacity of the ship are effectively improved.

In order to achieve the above purpose, the embodiment of the invention adopts the following technical scheme:

the utility model provides a marine emergency rescue system, marine emergency rescue system includes big dipper satellite communication system and GPS satellite positioning system, still includes:

the plurality of ship-borne help calling terminals and/or personal help calling terminals provided with the Beidou and GPS dual-mode positioning modules can be positioned through the GPS and/or BDS, and the Beidou modules can be used for sending help calling information and positioning information to the Beidou satellite communication system;

the plurality of rescue devices for rescue comprise Beidou communication modules, can receive a rescue scheme through a Beidou satellite communication system and carry out rescue according to the rescue scheme;

the information center can be communicated with the Beidou satellite communication system, can obtain information of each shipborne distress call terminal and each individual distress call terminal, information of each rescue device and rescue scheme information in real time through the Beidou satellite communication system, and can also obtain rescue related information resources through other ways;

and the command system is connected with the information center to obtain all information and generate a rescue chart, displays the information of points to be rescued on the rescue chart, simultaneously formulates a rescue scheme and carries out rescue command according to the rescue scheme.

According to one aspect of the invention, the shipborne distress call terminal and/or personal distress call terminal comprises a shell, a GPS module, a Beidou RDSS module, a Beidou GPS two-in-one antenna, an AIS module, an AIS antenna, a sensor module, a microprocessor and a power management module, wherein the AIS antenna is arranged outside the shell and connected with the AIS module, the GPS module, the Beidou RDSS module, the Beidou GPS two-in-one antenna, the AIS module, the sensor module, the microprocessor and the power management module are arranged inside the shell, the Beidou GPS two-in-one antenna is connected with the GPS module and the Beidou RDSS module, and the microprocessor is respectively connected with the GPS module, the Beidou RDSS module, the AIS module, the sensor module and the power management module; the microprocessor receives and judges the owner state data detected by the sensor module, determines whether to send an alarm call for help or not according to a judgment result, obtains positioning data through the GPS module, the Beidou RDSS module and the AIS module in real time, forms a message for help according to the received data, and transmits the message for help to the corresponding satellite positioning communication module and/or AIS module base station.

According to one aspect of the invention, the sensor module comprises one or more of a low voltage detection sensor, a gyroscope, and a touch electrode.

According to one aspect of the invention, the rescue apparatus includes a rescue boat and a rescue helicopter.

According to one aspect of the invention, the rescue helicopter receives the rescue scheme and carries out rescue according to the rescue scheme, the rescue ship can receive the rescue scheme and carry out rescue according to the rescue scheme, and meanwhile, the rescue ship can automatically make the rescue scheme according to the received information and the field situation and upload the rescue scheme through the Beidou communication module.

According to one aspect of the invention, the relevant information resources include global electronic chart and ocean big data.

According to one aspect of the invention, the rescue sea map is a dynamic display map which is generated based on a global electronic sea map and ocean big data and at least comprises any one of a wind field, a wave field, an ocean flow field and a water temperature field, the position of a point to be rescued is dynamically displayed on the dynamic display map in real time, and at least one of the wind field, the wave field, the ocean flow field and the water temperature field of the point to be rescued can be visually seen, so that a rescue scheme is generated according to the position.

According to one aspect of the invention, the dynamic display map is embodied as: and generating a physical or mathematical model of any one of the wind field, the wave field, the ocean flow field and the water temperature field according to the offshore detection data, and sequentially deducing the wind field, the wave field, the ocean flow field or the water temperature field of the whole ocean from the deep sea according to the ocean information data.

According to one aspect of the invention, the other means includes a hydrological/meteorological information distribution platform in communicative connection with the information center through a mobile communication public network.

According to one aspect of the invention, the Beidou communication module comprises: the receiving antenna is used for receiving 2491.75+/-4.08MHz Beidou first-generation data signals and/or 1561.098MHz Beidou second-generation data signals; the Beidou receiving circuit is used for amplifying the data signals received by the Beidou receiving antenna and then transmitting the data signals to a Beidou radio frequency channel, and a low-noise amplification three-stage amplifying circuit is adopted, so that the receiving sensitivity is-127.6 dBm; the radio frequency channel is used for receiving a data signal transmitted by the Beidou receiving circuit, and directly outputting data information in a Beidou labeling format to the processor module in the control system through frequency conversion and protocol analysis; meanwhile, the Beidou satellite short message transmitting circuit is used for generating Beidou short message data signals to be transmitted and transmitting the Beidou short message data signals to a Beidou 5W power amplifying circuit; the 5W power amplification circuit is used for amplifying the power of a Beidou short message data signal generated by a Beidou radio frequency channel to 5W and then sending the amplified Beidou short message data signal to a Beidou transmitting antenna; and the transmitting antenna is used for transmitting 1615.68+/-4.08MHz data signals of the Beidou generation.

According to one aspect of the invention, the command system comprises a command machine, and the command machine receives information of the information center and communicates with each rescue device through a Beidou communication module and/or a radio communication mode.

According to one aspect of the invention, the rescue equipment may include AIS equipment and its information thereon.

The implementation of the invention has the advantages that: the marine emergency rescue system comprises a Beidou satellite communication system and a GPS satellite positioning system, and further comprises: the plurality of ship-borne help calling terminals and/or personal help calling terminals provided with the Beidou and GPS dual-mode positioning modules can be positioned through the GPS and/or BDS, and the Beidou modules can be used for sending help calling information and positioning information to the Beidou satellite communication system; the plurality of rescue devices for rescue comprise Beidou communication modules, can receive a rescue scheme through a Beidou satellite communication system and carry out rescue according to the rescue scheme; the information center can be communicated with the Beidou satellite communication system, can obtain information of each shipborne distress call terminal and each individual distress call terminal, information of each rescue device and rescue scheme information in real time through the Beidou satellite communication system, and can also obtain rescue related information resources through other ways; the command system is connected with the information center to obtain each piece of information and generate a rescue chart, the information of points to be rescued is displayed on the rescue chart, meanwhile, a rescue scheme is formulated, and rescue command is carried out according to the rescue scheme; the terminal sends the distress message, the information center and the command center designate a rescue scheme, and simultaneously the Beidou communication system commands each rescue device to rescue, so that the rescue can be accurately performed and the rescue efficiency is improved through the positioning information of the terminal; the rescue sea map not only contains the positioning information of points to be rescued, but also at least contains any one of a wind field, a wave field, an ocean flow field and a water temperature field, so that the weather information of the points to be rescued during rescue, such as wind power, rain force, ocean current and the like, can be deduced by combining with meteorological knowledge, rescue equipment with corresponding requirements can be pertinently dispatched, if the wind is light and the rain is light, a small-sized rescue ship can be dispatched, the rescue cost is reduced, if the wind is heavy and the rain is heavy, a medium-sized rescue ship needs to be dispatched, the rescue success rate is increased, and the safety of rescue personnel equipment is ensured. The system has the characteristics of safe information, stable communication, reliable performance and the like, the emergency and rescue platform has high systematization degree, the emergency treatment and rescue efficiency is improved, and the overwater safe navigation capacity, the distress alarm capacity and the emergency disposal capacity of the ship are effectively improved.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a schematic diagram of a marine emergency rescue system according to the present invention;

fig. 2 is a schematic structural view of a shipborne distress call terminal and/or a personal distress call terminal according to the present invention;

fig. 3 is an exemplary application diagram of a rescue chart according to an embodiment of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

As shown in fig. 1 and 2, the marine emergency rescue system comprises a Beidou satellite communication system and a GPS satellite positioning system, and further comprises:

the plurality of ship-borne help calling terminals and/or personal help calling terminals provided with the Beidou and GPS dual-mode positioning modules can be positioned through the GPS and/or BDS, and the Beidou modules can be used for sending help calling information and positioning information to the Beidou satellite communication system;

the plurality of rescue devices for rescue comprise Beidou communication modules, can receive a rescue scheme through a Beidou satellite communication system and carry out rescue according to the rescue scheme;

the information center can be communicated with the Beidou satellite communication system, can obtain information of each shipborne distress call terminal and each individual distress call terminal, information of each rescue device and rescue scheme information in real time through the Beidou satellite communication system, and can also obtain rescue related information resources through other ways;

and the command system is connected with the information center to obtain all information and generate a rescue chart, displays the information of points to be rescued on the rescue chart, simultaneously formulates a rescue scheme and carries out rescue command according to the rescue scheme.

The rescue sea map is a dynamic display map which is generated based on a global electronic sea map and ocean big data and at least comprises any one of a wind field, a wave field, an ocean flow field and a water temperature field, the position of a point to be rescued is dynamically displayed on the dynamic display map in real time, and at least one of the wind field, the wave field, the ocean flow field and the water temperature field of the point to be rescued can be visually seen, so that a rescue scheme is generated; the dynamic display map is specifically realized as follows: and generating a physical or mathematical model of any one of the wind field, the wave field, the ocean flow field and the water temperature field according to the offshore detection data, and sequentially deducing the wind field, the wave field, the ocean flow field or the water temperature field of the whole ocean from the deep sea according to the ocean information data. Fig. 3 is a diagram illustrating an example of a wind field in practical use.

In practical application, the flow fields such as the wind field, the wave field, the ocean flow field and the water temperature field can be performed in the following ways:

for example, the system comprises a wind observation system, a wave current observation system, a tide level observation system, a data acquisition and storage system and a wind-wave-current coupled field numerical analysis system, wherein:

the wind observation system comprises N wind observation stations for performing multi-station synchronous height-following gradient wind observation, the N wind observation stations are arranged on offshore oceans or coastal land open zones, and N is a natural number greater than or equal to 2.

The wave flow observation system comprises M wave flow observation stations for carrying out multi-station synchronous wave surface and layered flow velocity observation in a deep sea area with the water depth of more than 50M, wherein the M wave flow observation stations are arranged in an offshore water area and can be located on the seabed near the offshore area, and M is a natural number which is more than or equal to 2.

The tide level observation system comprises K tide level observation stations for multi-station synchronous tide level observation, wherein the K tide level observation stations are arranged in an offshore and coastal water area, and K is a natural number greater than or equal to 2.

And the data acquisition and storage system is connected with the wind observation system, the wave current observation system and the tide level observation system in a wired or wireless mode, and receives and stores the observation data of the wind observation system, the wave current observation system and the tide level observation system on wind, waves, ocean currents and tide levels in real time or irregularly.

The wind-wave-flow coupling field numerical analysis system is connected with the data acquisition and storage system, obtains a three-dimensional wind field of an offshore area by using wind observation data acquired by the data acquisition and storage system, and obtains wind-wave-flow coupling field characteristic parameters of offshore, wave and water flow which are related in space and synchronous in time by using wave, ocean current and tide level observation data acquired by the data acquisition and storage system.

The wind observation system, the wave current observation system and the tide level observation system are used for realizing multipoint space correlation, time synchronization and continuous observation of wind, waves, ocean currents and tide levels in typhoon periods and non-typhoon periods, obtaining observation data of wind field parameters, wave field parameters, flow field parameters and tide levels, transmitting the observation data in real time or irregularly, and storing the observation data in the data acquisition and storage system, wherein the wind field parameters at least comprise wind speed and wind direction, the wave field parameters at least comprise wave height, wave period and wave direction, and the flow field parameters at least comprise layered flow velocity and flow direction.

The wind-wave-flow coupling field numerical analysis system comprises a three-dimensional wind field numerical simulation module considering terrain influence, a SWAN wave field numerical simulation module and a storm tide numerical simulation module, wherein: the wind-wave-flow coupling field numerical analysis system firstly adopts a three-dimensional wind field numerical simulation module considering the influence of the offshore topography to establish a three-dimensional wind field model containing the offshore topography, and analyzes and simulates to obtain the three-dimensional wind field of the offshore area after carrying out numerical simulation, verification and calibration on the three-dimensional wind field model by using wind observation data acquired by a data acquisition and storage system. Then, the wind-wave-flow coupling field numerical analysis system adopts a SWAN wave field numerical simulation module and a storm tide numerical simulation module to establish a wind-wave-flow coupling field numerical simulation model of the offshore area, numerical simulation, verification and calibration are carried out on the wind-wave-flow coupling field numerical simulation model by utilizing an offshore area three-dimensional wind field obtained through analysis and simulation and wave, ocean current and tide level observation data acquired by utilizing a data acquisition and storage system, and finally historical observation data are combined to obtain wind-wave-flow coupling field characteristic parameters of space correlation and time synchronization of offshore waves, waves and water flows.

In the process of obtaining the characteristic parameters of the wind-wave-flow coupling field with space correlation and time synchronization of offshore wind, wave and water flow, the wind-wave-flow coupling field numerical analysis system selects an M3Copula function as the joint probability distribution of the extreme value correlation of wind speed, wave height and flow speed in the wind-wave-flow coupling field, and the function expression is as follows:

in the formula: u. of₁、u₂And u₃Respectively, the edge distribution function of wind speed, wave height and flow velocity, theta 1 and theta 2 being parameters of the M3Copula function, where u₁、u₂And u₃The extreme value is obtained by preferred fitting such as extreme value I-type distribution, Weibull distribution or lognormal distribution; and the theta 1 and the theta 2 are obtained by parameter estimation such as a maximum likelihood method, an adaptive method or a moment method.

In the process of obtaining the characteristic parameters of the wind-wave-flow coupling field with space correlation and time synchronization of offshore, wave and water flow by the wind-wave-flow coupling field numerical analysis system, the extreme values of wind speed, wave height and flow speed in the wind-wave-flow coupling field adopt a composite extreme value model, and the probability distribution function of the extreme value model is as follows:

in the formula: x1, x2 and x3 represent wind speed, wave height and flow velocity, respectively, and u1, u2 and u3 are corresponding edge distribution functions; c (u1, u2, u3) is a density function of a wind speed, wave height and period joint probability distribution function C (u1u2, u 3); λ is the Poisson distribution parameter.

And after obtaining the offshore wind-wave-flow coupling field, constructing a physical frame model, deducing to the deep sea according to the physical frame model, and performing adaptive correction by combining the deep sea topography to obtain a wind-wave-flow coupling field diagram which is related to the whole sea in space and synchronous in time.

Therefore, according to the wind-wave-flow coupling field diagram with synchronous time, the weather and the wind wave can be judged according to the meteorology knowledge, when the rescue ship reaches a rescue point, the rescue ship can touch the weather and the wind wave, so that the type of rescue equipment can be known for rescue, and whether storms such as typhoons or hurricanes leave during rescue.

In practical application, the parameter information of the dynamic display map can be obtained by the following method:

(1) selecting a marine environment risk assessment index and building a Bayesian network structure;

(2) collecting and preprocessing index data;

(3) the inversion technology process designs a genetic coding mode suitable for Bayesian network parameter learning, can dynamically adjust crossover and mutation operators, and can carry out an adaptive function for reasoning error feedback, thereby realizing the parameter learning based on the error feedback under the condition of small samples. However, in the evaluation application, the parameter learning algorithm requires a precondition, that is, a data set in which at least one node exists in the network is complete, and the posterior probability distribution can be obtained through statistics, so that a fitness function can be constructed to realize the optimal search:

inputting: CPT search space, error function:

and (3) outputting: an optimal CPT;

step 1: establishing an initial CPT population;

step 2: carrying out statistical analysis on historical data to obtain posterior probability distribution of child nodes, and constructing an error function;

step 3: carrying out genetic operations such as crossing, mutation and the like to expand the diversity of the population;

step 4: selecting according to an error function;

step 5: judging a termination condition, and outputting the optimal CPT of the node to be solved;

(4) providing a marine environment risk assessment technical process based on the basic operation and optimization algorithm:

inputting: offshore marine environment risk assessment indexes;

and (3) outputting: marine environmental risk status;

step 1: identifying risks of offshore marine environments;

step 2: selecting significant influence factors as evaluation indexes;

the steps 1 and 2 mainly select reasonable marine environment elements, namely meteorological hydrological elements, as risk assessment indexes.

step 3: collecting and preprocessing data; downloading reanalysis grid data from a corresponding meteorological ocean website, and then carrying out regularization and discretization on the data; the regularization mainly refers to unifying the resolution of data by adopting a bilinear interpolation method, and the discretization mainly refers to dividing the grade state of a continuous index by adopting a self-adaptive Gaussian cloud transformation algorithm; finally, discrete training samples are generated.

step 4: learning a Bayesian network structure;

step 5: learning network node conditional probability based on a genetic algorithm;

step 6: calculating index weight based on improved grey correlation analysis;

step4, Step5 and Step6 are mainly used for building a Bayesian network model and comprise structure learning and parameter learning;

the structure learning is to construct a network structure, and the parameter learning is to train the conditional probability distribution of the network.

step 7: inputting prior information of an evaluation index to perform weighted reasoning; the method mainly comprises the steps of inputting prior information of an evaluation index for reasoning, wherein the prior information also needs to be subjected to the same data processing process as Step 3; and inputting discrete prior information to infer and obtain the probability distribution of each grade of the marine environmental risk.

step 8: and (4) visualizing the evaluation result, namely generating a dynamic display map.

The method comprises the steps of comprehensively utilizing an improved Bayesian network to carry out an evaluation experiment on marine environment risks, constructing an offshore marine environment risk evaluation scheme and a technical process, giving an evaluation result, deducing to the deep sea according to the evaluation result, and carrying out adaptive correction by combining the deep sea terrain to obtain a dynamic risk display map of the whole sea.

Therefore, the map can be dynamically displayed according to the risk and can be judged by combining with meteorology knowledge, when in rescue, the rescue ship can touch what weather and what kind of stormy waves when reaching a rescue point, so that the user can know what kind of rescue equipment is used for rescue, and whether storms such as typhoons or hurricanes leave during rescue.

In practical application, the shipborne distress call terminal and/or personal distress call terminal comprises a shell 1, a GPS module 2, a Beidou RDSS module 3, a Beidou GPS two-in-one antenna 4, an AIS module 5, an AIS antenna 6, a sensor module 7, a microprocessor 10 and a power management module 11, wherein the AIS antenna is arranged outside the shell and connected with the AIS module, the GPS module, the Beidou RDSS module, the Beidou GPS two-in-one antenna, the AIS module, the sensor module, the microprocessor and the power management module are arranged inside the shell, the Beidou GPS two-in-one antenna is connected with the GPS module and the Beidou RDSS module, and the microprocessor is respectively connected with the GPS module, the Beidou RDSS module, the AIS module, the sensor module and the power management module;

the microprocessor receives and judges the owner state data detected by the sensor module, determines whether to send an alarm call for help or not according to a judgment result, obtains positioning data through the GPS module, the Beidou RDSS module and the AIS module in real time, forms a message for help according to the received data, and transmits the message for help to the corresponding satellite positioning communication module and/or AIS module base station. The sensor module includes a low voltage detection sensor 8 and a gyroscope 9. The altitude of the owner and the states of whether the owner falls into water and the like can be obtained through the sensor module, and whether the owner falls into water or not and whether the owner is in a dangerous case can be obtained through the gyroscope. The Beidou GPS two-in-one antenna is connected with the GPS module and the Beidou RDSS module through the radio frequency module respectively. The AIS antenna is connected with the AIS module through the radio frequency module. The microprocessor comprises an embedded single chip microcomputer, an I/O (input/output) port and a communication port. The Beidou GPS two-in-one antenna is arranged outside the shell. The shell is an all-plastic sealing shell with a sealing grade of IP68 and is provided with a hook clamp for conveniently clamping on a life jacket or a floating object. The emergency light also comprises an audible and visual alarm 12 for giving out audible and visual alarm to call for help, for example, the alarm can comprise an LED (light emitting diode) all-round lamp which is controlled by the instruction of a microprocessor and used for giving out an alarm and indicating light under the emergency state in danger, the color of the generated light is white light, and the effective light intensity is not less than 0.5 cd.

In practical application, the rescue equipment comprises a rescue ship and a rescue helicopter, the rescue helicopter receives a rescue scheme and carries out rescue according to the rescue scheme, the rescue ship can receive the rescue scheme and carry out rescue according to the rescue scheme, and meanwhile the rescue ship can automatically make the rescue scheme according to received information and field conditions and upload the rescue scheme through a Beidou communication module.

In practical application, the related information resources comprise global electronic chart and ocean big data. The ocean big data comprises wind fields, wave fields, flow fields and global surface water temperature distribution, the maritime climate and the sea conditions play important factors corresponding to first aid, and commanders decide to dispatch rescue equipment and organize rescue force according to the meteorological sea conditions on the sea.

In practical application, the other approaches include a hydrological/meteorological information publishing platform, and the hydrological/meteorological information publishing platform is in communication connection with the information center through a mobile communication public network.

In practical application, the big dipper communication module includes: the receiving antenna is used for receiving 2491.75+/-4.08MHz Beidou first-generation data signals and/or 1561.098MHz Beidou second-generation data signals; the Beidou receiving circuit is used for amplifying the data signals received by the Beidou receiving antenna and then transmitting the data signals to a Beidou radio frequency channel, and a low-noise amplification three-stage amplifying circuit is adopted, so that the receiving sensitivity is-127.6 dBm; the radio frequency channel is used for receiving a data signal transmitted by the Beidou receiving circuit, and directly outputting data information in a Beidou labeling format to the processor module in the control system through frequency conversion and protocol analysis; meanwhile, the Beidou satellite short message transmitting circuit is used for generating Beidou short message data signals to be transmitted and transmitting the Beidou short message data signals to a Beidou 5W power amplifying circuit; the 5W power amplification circuit is used for amplifying the power of a Beidou short message data signal generated by a Beidou radio frequency channel to 5W and then sending the amplified Beidou short message data signal to a Beidou transmitting antenna; and the transmitting antenna is used for transmitting 1615.68+/-4.08MHz data signals of the Beidou generation.

In practical application, the command system comprises a command machine, and the command machine receives information of the information center and communicates with each rescue device in a Beidou communication module and/or a radio communication mode.

In practical application, the AIS equipment and the information thereof can be included on the rescue equipment.

In the working process, when a ship encounters a dangerous situation, the ship-borne distress calling terminal and/or the personal distress calling terminal is/are enabled to send distress information in a manual mode, or the distress calling terminal and/or the personal distress calling terminal is automatically activated to send distress information after falling into water. The Beidou satellite ground station receives distress information and pushes the distress information to an information center. The information center processes the distress information after receiving the distress information, analyzes the distress information by combining ship data information acquired by the AIS shore-based system, then sends an analysis result to the command center through a mobile communication public network to generate a rescue task, the command center transmits the rescue scheme to each rescue device through the information center and the Beidou communication system, and each rescue device carries out rescue according to the rescue scheme.

The implementation of the invention has the advantages that: the marine emergency rescue system comprises a Beidou satellite communication system and a GPS satellite positioning system, and further comprises: the plurality of ship-borne help calling terminals and/or personal help calling terminals provided with the Beidou and GPS dual-mode positioning modules can be positioned through the GPS and/or BDS, and the Beidou modules can be used for sending help calling information and positioning information to the Beidou satellite communication system; the plurality of rescue devices for rescue comprise Beidou communication modules, can receive a rescue scheme through a Beidou satellite communication system and carry out rescue according to the rescue scheme; the information center can be communicated with the Beidou satellite communication system, can obtain information of each shipborne distress call terminal and each individual distress call terminal, information of each rescue device and rescue scheme information in real time through the Beidou satellite communication system, and can also obtain rescue related information resources through other ways; the command system is connected with the information center to obtain each piece of information and generate a rescue chart, the information of points to be rescued is displayed on the rescue chart, meanwhile, a rescue scheme is formulated, and rescue command is carried out according to the rescue scheme; the terminal sends the distress message, the information center and the command center designate a rescue scheme, and simultaneously the Beidou communication system commands each rescue device to rescue, so that the rescue can be accurately performed and the rescue efficiency is improved through the positioning information of the terminal; the rescue sea map not only contains the positioning information of points to be rescued, but also at least contains any one of a wind field, a wave field, an ocean flow field and a water temperature field, so that the weather information of the points to be rescued during rescue, such as wind power, rain force, ocean current and the like, can be deduced by combining with meteorological knowledge, rescue equipment with corresponding requirements can be pertinently dispatched, if the wind is light and the rain is light, a small-sized rescue ship can be dispatched, the rescue cost is reduced, if the wind is heavy and the rain is heavy, a medium-sized rescue ship needs to be dispatched, the rescue success rate is increased, and the safety of rescue personnel equipment is ensured. The system has the characteristics of safe information, stable communication, reliable performance and the like, the emergency and rescue platform has high systematization degree, the emergency treatment and rescue efficiency is improved, and the overwater safe navigation capacity, the distress alarm capacity and the emergency disposal capacity of the ship are effectively improved.

The above description is only an embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention disclosed herein are intended to be covered by the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.