CN118018647A

CN118018647A - System and method for voice communication between land telephone and VHF ship radio station in sea-wind project

Info

Publication number: CN118018647A
Application number: CN202410159345.5A
Authority: CN
Inventors: 张锋国; 刘忠武; 刘刚; 黄礼波
Original assignee: Xian Datang Telecom Co Ltd
Current assignee: Xian Datang Telecom Co Ltd
Priority date: 2024-02-04
Filing date: 2024-02-04
Publication date: 2024-05-10

Abstract

The invention belongs to the field of safety production of offshore wind power industry in the field of new energy, and discloses a voice communication system and a voice communication method for land phones and VHF (very high frequency) ship radio stations in a sea wind project.

Description

System and method for voice communication between land telephone and VHF ship radio station in sea-wind project

Technical Field

The invention belongs to the field of safety production of the offshore wind power industry in the field of new energy, and particularly relates to a voice communication system and a voice communication method for land phones and VHF ship radio stations in a sea wind project.

Background

The offshore wind farm site consists of a land centralized control center and an offshore wind farm production area. The land centralized control center is a building facility built on a coastal land base and is mainly responsible for converging and distributing electric power energy produced in an offshore production area to a power grid; the offshore wind farm production area is generally built in the sea area from tens of seas to tens of seas from the coastline, and equipment facilities such as a fan generator, an offshore booster station, a submarine power cable (fan-to-booster station 35KV and booster station-to-landing point 220 KV) are distributed in the sea area. Marine navigation channels, anchor lands or fishing areas may be distributed around the offshore wind farm production area, and 220KV sea cables may traverse the channels to land centralized control center locations. The complexity and variable extreme marine climate around the production area of the offshore wind farm bring various unsafe factors to the safe production of the offshore wind farm.

Equipment in the offshore wind farm is mostly in an unattended state during safe production, and maintenance personnel of a land centralized control center remotely measure, remotely signal and control power generation and transmission equipment in the offshore wind farm through submarine power cables. Fans in the offshore wind farm production area generate electric power through fan blade rotation, and after the electric power is converged and boosted by the booster station, the electric power is transmitted to a land centralized control center power distribution machine room through a 220KV submarine power cable.

Two marine VHF ship stations (1 main station and 1 standby station) are arranged in an upper relay protection room of the offshore booster station, and a default on duty 16CH (international distress call special communication frequency band) is in radio voice communication with surrounding ship stations; and the relay protection room is also provided with AIS (automatic ship identification system Automatic Identification System) equipment for acquiring static and dynamic information of the ship in the surrounding sea area in real time. The antennas of the VHF ship radio station and AIS equipment are arranged on a top-layer platform of the booster station and are connected with the equipment through feeder lines.

The AIS device forwards the dynamic and static data of surrounding ships to relevant server devices through a physical port. And running an AIS data acquisition program on the server equipment to receive, analyze, clean and store the data, and dynamically displaying the data on a software monitoring interface of the land centralized control center, wherein the interface is a picture which takes a maritime map as a base picture and is marked with dynamic refreshing of information of fans, booster stations, sea cables and geographic electronic fences. When a social ship breaks into a production area of an offshore wind farm or passes through a submarine power cable, the ship speed is too slow or is zero, alarm information output can be generated.

In order to ensure the production safety of the offshore wind farm production area and ensure the smooth voice communication between the land centralized control center and the offshore wind farm production area as well as the surrounding VHF ship radio stations, the conventional method is to erect a VHF ship radio station antenna at the high position of the land centralized control center, and connect the VHF ship radio stations through a feeder line to serve as a means for the voice communication between the centralized control center dispatcher and the ship around the offshore wind farm production area. The communication mode is easy to be influenced by weather conditions, the communication distance is far when the air is dry, and the communication distance is near when the air is wet, especially in rainy and snowy weather.

For example: when social ships are driven into the offshore wind farm production area or trawl is carried out in the 220KV submarine cable and 35KV submarine cable laying area, the risk of damaging power equipment facilities or transmission cables in the offshore wind farm production area exists. After the land centralized control center dispatching room finds abnormal behavior of the ship, the traditional mode is to drive off the ship alarm by setting a ship station for alarming by shouting a VHF ship station erected in the land centralized control center. Communication effects are poor due to weather conditions, possibly resulting in damage to production facility facilities.

During the period that the daily operation and maintenance ship of the offshore wind power project reaches the production area of the offshore wind farm, the land centralized control center needs to keep a communication state with the operation and maintenance ship, and performs dispatching command. Communication is not good due to weather conditions, and potential safety hazards may exist during job execution.

Disclosure of Invention

The invention aims to overcome the defects, and provides a voice communication system and a voice communication method for a land telephone and a VHF ship radio station of a sea wind project, which are used for realizing the integrated communication of an IP network and a marine VHF ship radio station network, expanding the communication distance between the VHF marine radio station and the ship at a land centralized control center, reducing and reducing the influence of sea climate conditions on the radio communication distance, ensuring the production safety of a production area of a sea wind farm and timely stopping adverse factors affecting the safety production.

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

In a first aspect, the invention provides a method for voice communication between a land telephone of a sea wind project and a VHF ship radio station, comprising the following steps:

acquiring ship information in a preset area;

An IP soft telephone or an IP telephone of the land centralized control center sends a call request to an IP PBX telephone switching device;

The IP PBX telephone switching equipment forwards the call request to an IP telephone voice conversion gateway of the offshore wind farm booster station;

After the IP telephone voice conversion gateway responds, the IP PBX telephone switching equipment establishes a bidirectional data transmission channel, and an IP soft telephone or an IP telephone encodes voice and transmits the voice to the IP telephone voice conversion gateway and transmits the voice to a ship VHF ship radio station in a preset area;

After the ship feeds back the response information, the IP telephone voice conversion gateway encodes voice into network voice data, and the network voice data is exchanged to the IP soft telephone or the IP telephone through the IP PBX telephone exchange equipment.

The invention is further improved in that when the ship information in the preset area is acquired, the ship AIS system or the navigation aid comprehensive service system is adopted to acquire the ship information of the social ship and the construction operation and maintenance ship.

When the ship information of the social ships in at least two preset areas is obtained, generating a job task of a call request corresponding to each ship, and placing the job tasks into a queuing queue for processing one by one until the completion.

The invention is further improved in that when voice communication with a specific ship is required, the voice conversion gateway of the IP telephone is converted into PTT state, and the language sent by the IP telephone is sent to the specific ship through the VHF ship radio station.

The voice conversion gateway of the IP telephone controls the PTT state of the VHF ship radio station of the offshore booster station according to whether the volume of voice transmitted by the IP soft telephone or the IP telephone exceeds a threshold value, and transmits the voice to the corresponding VHF ship radio station in the area through the VHF ship radio station of the offshore booster station.

In a second aspect, the present invention provides a voice communication system for land telephone and VHF shipping radio for maritime projects, comprising:

The ship information acquisition system is used for acquiring ship information in a preset area;

The IP soft telephone is used for controlling the IP telephone to send a call request to the IP PBX telephone switching equipment according to the ship information in the preset area; the voice conversion gateway is used for transmitting the coded voice to the IP telephone voice conversion gateway; for receiving the response information;

The IP telephone is used for sending a call request or a preset information request to the IP PBX telephone exchange equipment according to the ship information in the preset area; the voice conversion gateway is used for transmitting the coded voice to the IP telephone voice conversion gateway; for receiving the response information;

The IP PBX telephone switching equipment is used for forwarding the received call request or preset information to the IP telephone voice conversion gateway; the method is used for sending the received response information to the IP soft phone or the IP telephone;

The voice conversion gateway of the IP telephone is used for sending the received call request or preset information to the VHF ship radio station of the offshore booster station; the device is used for sending the received response information to the IP PBX telephone switching equipment;

The marine booster station VHF ship radio station is used for forwarding the received calling request or preset information to the ship VHF ship radio station of the corresponding ship; the voice conversion gateway is used for encoding the received response information and then sending the encoded response information to the voice conversion gateway of the IP telephone;

The ship VHF ship radio station is used for receiving the calling request and feeding back response information; broadcasting after receiving preset information;

The ship information acquisition system, the IP soft phone, the IP phone and the IP PBX phone switching equipment are arranged in a land centralized control center, the IP phone voice conversion gateway and the marine booster station VHF ship radio station are arranged in the marine wind power booster station, and the ship VHF ship radio station is arranged on a ship.

The invention further improves that the ship information acquisition system adopts a ship AIS system or a navigation aid comprehensive service system.

The invention is further improved in that the ship AIS system comprises an AIS data acquisition program and an AIS ship alarm software message notification interface;

the AIS data acquisition program is used for receiving all ship information in the coverage area;

and the AIS ship warning software message notification interface is used for sending the ship information to the IP soft telephone when the ship enters the preset area.

A further improvement of the present invention is that the IP PBX telephone switching device and the IP telephone voice conversion gateway communicate via a subsea power cable.

The invention is further improved in that the voice over IP gateway connects the voice input port, voice output port and PTT control port of the VHF station of the offshore booster station.

Compared with the prior art, the invention has the following beneficial effects:

According to the invention, ship information is continuously acquired, when a ship enters a pre-examination area, an IP soft phone or an IP telephone of a land centralized control center sends a call request to a corresponding ship, two voice communication methods for a ship driver VHF radio around a marine wind farm are provided, after the ship feeds back response information, the IP telephone sends preset voice to the corresponding ship, the IP telephone exchange equipment of the land centralized control center is adopted to communicate with an IP telephone voice conversion gateway of a booster station of the marine wind farm, so that the integrated communication of an IP network and a marine VHF ship radio network is realized, the influence of marine climate conditions on the communication distance is reduced and reduced, the voice mode is used for timely stopping dangerous behaviors of a social ship in a marine cable distribution area for towing network, ship stopping and anchoring operation or the social ship entering the marine wind farm, and meanwhile, the communication scheduling capability of land centralized control personnel and the marine wind farm Shi Gongyun-dimensional ship is enhanced, and the production safety of the marine wind farm production area is ensured.

Furthermore, in the working method, when a social ship enters an early warning area of an offshore booster station, an early warning program can generate a warning message from mmsi numbers of the ship and the name of the ship, and an IP soft telephone warning driving-out ship task of a land centralized control center is started. The IP soft telephone firstly acquires the Chinese name of the ship involved in the accident, converts the alarm information into voice file information, establishes voice call connection with the IP telephone voice conversion gateway, plays alarm driving voice, controls the PPT (Power Point) enable of the VHF radio station on the booster station, and forwards the voice to the VHF network. When the involved ship hears the voice, the ship can drive away from the early warning area. When the IP soft telephone is not effective to drive away the ship, a manual IP telephone shouting drive away calling mode can be adopted to alarm and drive away the ship involved in the accident.

Drawings

FIG. 1 is a system diagram of the present invention;

FIG. 2 is a flow chart of the present invention;

FIG. 3 is a diagram of the apparatus of the present invention;

FIG. 4 is a software interface diagram when acquiring ship information in a preset area;

FIG. 5 is a diagram of an automatic recording setup of an IP PBX telephony switch in an embodiment;

FIG. 6 is a diagram of call record query and call record playback for an IP PBX telephony switch device in an embodiment;

FIG. 7 is a control diagram of a Web program in an embodiment;

Fig. 8 is a flow chart of an embodiment in which an IP softphone completes an automatic voice call to drive off a ship.

Detailed Description

For a further understanding of the present invention, the present invention is described in detail below with reference to the drawings and specific examples. It is to be understood that the examples are illustrative of the present invention and are not intended to be limiting.

Referring to fig. 1 and 3, a voice communication system for land phones and VHF shipping stations for the sea project, comprising:

And the ship information acquisition system is used for acquiring the ship information in the preset area.

The IP soft telephone is used for controlling the IP telephone to send a call request to the IP PBX telephone switching equipment according to the ship information in the preset area; and the IP telephone is used for controlling the IP telephone to send preset information according to the received response information.

The IP soft telephone is deployed on a server or a terminal of a centralized control room of a land centralized control center and is connected with the IP PBX telephone exchange equipment in a network by using a network port. Setting IP and communication port of IP PBX equipment through configuration file, and storing file information. The IP softphone has the following functions:

1) Starting an AIS ship alarm software message notification interface after the program is operated, and monitoring an alarm notification message;

2) Converting the text information into a mono 16-bit wav voice file;

3) The system has the functions of voice calling, voice playing, automatic detection of off-hook and on-hook of an ip telephone;

An IP telephone for sending a call request or a preset information request to the IP PBX telephone switching device;

the IP telephone is deployed in a duty room of a land centralized control center and is connected with the IP PBX telephone exchange equipment in a network by using a network port. And setting the IP and the communication port of the IP PBX telephone switching equipment through the equipment setting page, and setting and storing information. The method mainly adopts a voice communication mode of manually driving out social ships around the offshore wind farm production area and scheduling and communicating with construction operation and maintenance ships.

the IP PBX telephone switching equipment is deployed in a central control room machine room of a land central control center. The system is connected with an IP telephone through an Ethernet, provides detection signaling such as IP telephone voice conversion gateway equipment, IP telephone hardware terminals, IP telephone software terminal servers or terminal registration, off-hook and on-hook, busy tones and the like, and has the functions of telephone voice exchange, call record generation, call record inquiry, call record playback and the like. 3 extension numbers are configured on a configuration page of the IP PBX telephone switching equipment, and are respectively configured to: IP telephone voice conversion gateway equipment, IP telephone terminal and IP soft telephone, and stores setting parameters. Editing extension pages in the IP PBX telephone exchange equipment respectively, selecting an option of 'automatic recording' as 'all calls', and setting parameters. After the 3 terminals are started or operated, the 3 terminals can be normally registered on the IP PBX telephone switching equipment.

The IP telephone voice conversion gateway equipment is deployed in a centralized control room of the offshore booster station, is connected with a mic interface of a VHF ship station of the offshore booster station by using a special cable, and is connected with the IP PBX telephone exchange equipment in a network by using a network port. And setting the IP and the communication port of the IP PBX telephone switching equipment through the equipment setting page, and setting and storing information. The equipment is connected with an IP network and a VHF ship voice communication network, and has the functions of mutually converting voice receiving and transmitting codes of different networks and then outputting PTT pressed states to the VHF ship radio station in an analog mode. The voice conversion gateway of the IP telephone is connected with the voice input port, the voice output port and the PTT control port of the VHF ship station of the offshore booster station.

The marine booster station VHF ship radio station is used for forwarding the received calling request or preset information to the ship VHF ship radio station of the corresponding ship; the voice conversion gateway is used for sending the received response information to the IP telephone voice conversion gateway;

Preferably, the ship information acquisition system adopts a ship AIS system or a navigation aid comprehensive service system. Referring to fig. 4, the ship AIS system includes an AIS data acquisition program and an AIS ship alert software message notification interface;

Preferably, the IP PBX telephone switching device and the IP telephone voice conversion gateway communicate via a subsea power cable.

According to the invention, ship AIS information (including MMSI, sailing state, position, speed, course and the like) in the peripheral area range of the offshore wind farm is obtained through an AIS device or a navigation aid comprehensive service system of a network installed on the offshore wind farm booster station. And further analyzing whether the social ship enters an offshore wind farm early warning area or stops in the early warning area by a geofence early warning monitoring program, and if the situation occurs, forming ship warning and driving-off information by the system.

Referring to fig. 2, a method for voice communication between a land phone of a sea wind project and a VHF ship radio station includes the steps of:

S1, acquiring ship information in a preset area by adopting a ship AIS system or a navigation aid comprehensive service system.

S2, the IP soft phone or the IP telephone of the land centralized control center sends a call request to the IP PBX telephone switching equipment.

S3, the IP PBX telephone switching equipment forwards the call request to an IP telephone voice conversion gateway of the offshore wind farm booster station.

S4, the IP telephone voice conversion gateway controls the VHF ship radio station to forward the call request to the corresponding ship in the preset area.

And S5, after the ship feeds back the response information, the IP telephone sends the preset voice to the corresponding ship through the IP PBX telephone exchange equipment, the IP telephone voice conversion gateway and the VHF ship radio station.

S6, when the voice communication with the specific ship is needed, the IP telephone voice conversion gateway is converted into the PTT state, and the language sent by the IP telephone is sent to the specific ship through the VHF ship radio station.

When the ship information in at least two preset areas is obtained, generating a job task of a call request corresponding to each ship, and placing the job task into a queuing queue for processing one by one until the completion.

Examples:

Deployment phase:

And selecting an independent C-type network segment address from the IP network of the offshore wind power project, and respectively distributing an IP address of an IPV4 network to the IP PBX telephone switching equipment, the IP telephone voice conversion gateway, the IP telephone and the IP soft telephone or the terminal.

The IP PBX telephone switching equipment, the IP soft telephone or the terminal is deployed in a relay protection room of the land centralized control center, and the IP telephone is deployed in a duty room of the land centralized control center.

The IP telephone voice conversion gateway is deployed in a marine booster station relay protection room and is connected with a handle interface of the VHF ship station by using a special cable.

3 Extension numbers are configured on a configuration page of the IP PBX telephone switching equipment, and are respectively configured to: voice over IP gateway, IP telephone and IP softphone, and maintain set parameters.

Referring to fig. 5, the IP PBX telephone switching device edits extension pages, selects the "auto recording" option as "all calls", and maintains the set parameters.

The IP address and port number of the IP PBX telephone switching equipment are set on the IP telephone voice conversion gateway, the IP telephone and the IP soft telephone respectively.

Observing 3 telephony terminals on a configuration page on the IP PBX telephony switching apparatus enables normal registration.

Business scenario:

and acquiring ship AIS information (including MMSI, sailing state, position, sailing speed, course and the like) in the peripheral area range of the offshore wind farm through an AIS device or a navigation aid comprehensive service system of a network installed on the offshore wind farm booster station. And further analyzing whether the social ship enters an offshore wind farm early warning area or stops in the early warning area by a geofence early warning monitoring program, and if the situation occurs, forming ship warning and driving-off information by the system.

Referring to fig. 7, the Web program for acquiring the ship AIS information in the area surrounding the offshore wind farm includes:

The Web program-offshore wind farm overview adopts a maritime map as a base map, and static information such as fans, booster stations, sea cables, geographic electronic fences and the like and the current navigation position of a dynamically marked ship are marked on the map;

the Web program-marine wind farm construction/inspection ship registration is used for registering mmsi numbers of the marine wind farm construction/inspection ships and is used as a judging basis for analyzing whether the ships belong to social ships or not by the geofence early warning monitoring program;

The Web program_offshore wind farm equipment facility registration is used for registering equipment facility information in the offshore wind farm area and is used for annotation in overview.

1. And (5) automatic ship driving-off business.

After receiving a message from AIS ship alarm software notification interface, the service monitoring port of IP soft telephone starts TTS function to convert text message into mono 16 bit wav voice format file, and controls IP telephone to initiate call flow to IP telephone voice conversion gateway through IP PBX telephone exchange equipment.

TTS programs employ chinese speech files that convert text information to a specified audio format. The program is called by the IP soft telephone program.

The IP soft telephone goes off-hook and dials to try to call the IP telephone voice conversion gateway. After the IP soft telephone detects the response of the other party, repeatedly playing the voice file according to the preset times, and delaying the on-hook operation after the voice playing is completed for 10 seconds; after the IP soft telephone dialing is completed, the on-hook operation is carried out when the line busy tone is detected. And suspending the operation service, and continuing to attempt to call the IP telephone voice conversion gateway after delaying for 20s until the task execution is completed.

Through a geofence early warning monitoring program, when judging that a plurality of social ships enter a production area of an offshore wind farm or stop ships near a submarine cable laying position, an IP soft telephone service monitoring port receives information from a plurality of AIS ship warning software notification interfaces simultaneously, a job task is put into a queuing queue firstly, and the job tasks are processed one by one until completion.

2. The operator manually shouting the ship to drive away.

When the automatic calling social ship is invalid, the attendant can use the IP telephone to call the IP telephone voice conversion gateway mode to manually call the social ship to drive away.

3. The construction ship is manually dispatched by an operator on duty.

When the on-duty personnel of the land centralized control center needs to make business connection with the operation and maintenance construction ship in the offshore wind farm production area, the IP telephone can be used for calling the IP telephone voice conversion gateway. After the telephone is switched on, the microphone can hear the voice sound emitted by the ship around the offshore wind farm production area. When the operator on duty of the centralized control center calls the operation and maintenance construction ship through voice, the IP telephone voice conversion gateway can simulate and output the pressed state of the PPT to the controlled VHF ship radio station, and meanwhile, the voice on the IP telephone side is transmitted to the mic interface mic of the VHF ship radio station. The radio station outputs through radio frequency, and the voice communication between the VHF ship radio station of the offshore booster station and surrounding ship radio stations is realized.

4. And inquiring the call records and inquiring the recording.

Referring to fig. 6, a telnet IP PBX telephony switch device call log web page queries call log, online playback, or downloads call log files.

According to the invention, the integrated design of the IP telephone network and the VHF ship radio communication network is adopted, the communication distance between the VHF maritime radio and the ship is extended and erected at the land centralized control center, the influence of the marine climate condition on the radio communication distance is avoided and reduced, and the production safety of the offshore wind farm production area is effectively ensured.

The invention provides two voice communication methods with VHF radio stations of ship drivers around an offshore wind farm. The first is to use an IP softphone to complete an automatic voice call to drive off the vessel. The second is to manually use the IP phone to complete the manual voice call to drive off the vessel.

Referring to fig. 8, when an automatic voice call is completed by using an IP soft phone, a ship chinese name acquisition program is called according to mmsi numbers of the ship, a ship chinese name is acquired to form warning-driving information, and a warning-driving voice file is generated by calling a TTS program.

After the IP soft telephone is off-hook and dialed, an Invite call request is sent to the IP PBX telephone switching equipment, and after the IP PBX telephone switching equipment analyzes the call request, the Invite request is sent to an IP telephone voice conversion gateway of the offshore wind farm booster station.

After the IP telephone voice conversion gateway responds, the voice call connection is established with the IP soft telephone of the land centralized control center, and the two parties enter a voice call state.

In the call state, when the voice volume of the IP soft phone exceeds a preset threshold value, the IP phone voice conversion gateway controls PTT (Push-to-talk) enabling of a VHF ship radio station on the booster station, the radio station is in a signal transmitting state, voice of the IP soft phone is forwarded by the radio station, and ship drivers around the booster station hear ship warning driving voice from a land centralized control center from the shipborne radio station.

In a call state, when the IP telephone voice conversion gateway monitors that the voice volume from the IP soft telephone is smaller than a preset threshold value, the IP telephone voice conversion gateway controls PTT of VHF ship radio stations on the booster station to be not enabled, the radio stations are in a signal receiving state, voice of ship drivers around the booster station is transmitted back to an earphone of the IP telephone of the centralized control center through the IP telephone voice conversion gateway, and operators on duty can hear the voice of the ship drivers around the booster station.

When the manual voice call is completed by using the IP telephone, the ship Chinese name is acquired after the ship Chinese name acquisition program is called according to mmsi numbers of the ship, the warning drive information is formed, and the warning drive voice file is generated by calling the TTS program.

After the IP telephone is off-hook and dialed, an Invite call request is sent to the IP PBX telephone switching equipment, and after the IP PBX telephone switching equipment analyzes the call request, the Invite request is sent to the IP telephone voice conversion gateway of the offshore wind farm booster station.

After the IP telephone voice conversion gateway responds, the voice call connection is established with the IP telephone of the land centralized control center, and the two parties enter a voice call state.

In a call state, when the voice volume of the IP telephone exceeds a preset threshold value, the IP telephone voice conversion gateway controls PTT (Push-to-talk) enabling of a VHF ship radio station on a booster station, the radio station is in a signal transmitting state, voice of the IP telephone is forwarded by the radio station, and ship drivers around the booster station hear ship alarming driving voice from a land centralized control center from a shipborne radio station;

In a call state, when the IP telephone voice conversion gateway monitors that the voice volume from the IP telephone is smaller than a preset threshold value, the IP telephone voice conversion gateway controls PTT of VHF ship radio stations on the booster station to be disabled, the radio stations are in a signal receiving state, voice of ship drivers around the booster station is transmitted back to an earphone of the IP telephone of the centralized control center through the IP telephone voice conversion gateway, and operators on duty can hear the voice of the ship drivers around the booster station.

In a preset area of an offshore wind power plant, a construction ship, a Very High Frequency (VHF) station of a patrol ship or a hand table of a constructor presses down a PTT key of equipment and then presses down an IP telephone number of a centralized control center when 16CH works. After the VHF ship station on the booster station receives the double-tone dialing broadcast, the IP telephone voice conversion gateway initiates a call request, and after the IP telephone of the centralized control center answers, the IP PBX telephone exchange equipment establishes a bidirectional data transmission channel. The IP telephone set in the centralized control center establishes a voice communication link with the construction ship or the patrol ship or the hand station, thereby realizing voice communication from the slipway to the duty room of the centralized control center.

Finally, it should be noted that: the above embodiments are only for illustrating the technical aspects of the present invention and not for limiting the same, and although the present invention has been described in detail with reference to the above embodiments, it should be understood by those of ordinary skill in the art that: modifications and equivalents may be made to the specific embodiments of the invention without departing from the spirit and scope of the invention, which is intended to be covered by the claims.

Claims

1. A voice communication method between a land telephone of a sea wind project and a VHF ship radio station is characterized by comprising the following steps:

acquiring ship information in a preset area;

2. The voice communication method of land telephone and VHF ship radio station in sea and wind project according to claim 1, wherein when obtaining the ship information in the preset area, the ship AIS system or navigation integrated service system is adopted to obtain the ship information of social ships and construction operation maintenance ships.

3. The voice communication method of land telephone and VHF ship radio for sea and wind projects according to claim 2, wherein when the ship information of at least two social ships in the preset area is obtained, a job task of calling request is generated for each ship, and the job tasks are put into a queuing queue and processed one by one until the completion.

4. A method of voice communication between a land telephone for a sea-wind project and a VHF station for a vessel according to claim 1, wherein when voice communication with only a specific vessel is required, the voice conversion gateway for the IP telephone is converted into PTT state, and the language transmitted by the IP telephone is transmitted to the specific vessel through the VHF station for the vessel.

5. The method of claim 1, wherein the voice over IP phone gateway controls the PTT state of the VHF station of the offshore booster station according to whether the volume of the voice transmitted from the IP soft phone or the IP phone exceeds a threshold, and transmits the voice to the VHF station corresponding to the area through the VHF station of the offshore booster station.

6. A marine wind project land phone and VHF marine radio voice communication system comprising:

the IP soft telephone is used for sending a call request to the IP PBX telephone switching equipment according to the ship information in the preset area; the voice conversion gateway is used for transmitting the coded voice to the IP telephone voice conversion gateway; for receiving the response information;

The voice conversion gateway of the IP telephone is used for forwarding the received call request or preset information to the VHF ship radio station of the offshore booster station; the IP PBX telephone exchange equipment is used for encoding the received response information and then sending the encoded response information to the IP PBX telephone exchange equipment;

7. The voice communication system for land telephone and VHF ship radio of sea-wind project according to claim 6, wherein the ship information acquisition system adopts a ship AIS system or navigation integrated service system.

8. The voice communication system between a land telephone and a VHF ship radio for sea and wind projects according to claim 7, wherein the ship AIS system comprises an AIS data acquisition program and an AIS ship warning software message notification interface;

9. A marine wind project land phone and VHF marine radio voice communication system according to claim 6, wherein the IP PBX phone switching device and the IP phone voice conversion gateway communicate via a subsea power cable.

10. A marine wind project land phone and VHF band station speech communication system according to claim 6 wherein the IP phone speech conversion gateway is connected to the speech input port, speech output port and PTT control port of the marine booster station VHF band station.