CN114302004A - Ship internal communication system - Google Patents

Abstract

The invention discloses a ship internal communication system. The invention adopts the technologies of voice digital processing, time-division program control exchange, loop bus transmission, microprocessor control and the like, more than two loop stations are connected in a ring shape through coaxial cables to form loop configuration, and each user terminal is connected to the corresponding loop station in a star-shaped mode to form the ship internal comprehensive communication system with the characteristics of signal digital transmission bus, management programming, interface standardization and the like. The system completes the functions of loud speaker command, service telephone, literature and art broadcasting, system setting and testing in the ship. The loudspeaker command function comprises a multi-stage command function, a traffic command function, a bridge command function, a real-time recording function and an emergency command function; the service telephone function comprises an automatic telephone function, a conference telephone function and a shore line function. The system adopts a mode of combining an emergency command communication network and a normal command communication network for command communication, and ensures the reliability and survivability of command communication in the ship.

Description

Ship internal communication system

Technical Field

The invention relates to the technical field of digital communication and program control exchange, in particular to a ship internal communication system.

Background

With the continuous improvement of the warship equipment combat performance in China, the requirement of warships on communication information is higher and higher. At present, digital communication and program-controlled exchange technologies are widely applied to the field of ship communication, but the application requirements under some special environments such as ship internal communication and the like are not widely developed, and the technology combination is relatively lagged. At present, the internal communication system of the ship always adopts a system consisting of relatively independent equipment such as a sound telephone, a loudspeaking communication and a service telephone, signal transmission is analog signals, and because each set of equipment is a system, wide communication relations between an upper level and a lower level and between the lower level cannot be formed, communication contact is very limited, the types of equipment are more, and the internal communication system of the modern ship cannot meet the requirement of the internal communication of the modern ship. The communication of the underwater ship in long-term underwater hidden navigation is mainly internal communication, and an internal communication system is an important system for guaranteeing the fighting capacity of the ship and plays irreplaceable roles in guaranteeing the coordinated actions of all departments of the whole ship, the normal operation of all systems in the ship, the navigation safety of the ship and the command and operation of the ship during the ship sailing. Therefore, the design of a digital comprehensive internal communication system of the ship, which not only meets the technical development direction, but also meets the special requirements of modern ships, has important significance.

Disclosure of Invention

In view of the above, the present invention provides a ship internal communication system, which adopts a digital program controlled switching technology, a loop structure and a digital relay communication mode, and realizes a loudspeaker command function, a service telephone function, a literature and art broadcasting function, a system setting function and a system testing function of a ship by a scheme that meets communication requirements of a ship command telephone, a service telephone and a loudspeaker broadcasting. Wherein: the loudspeaker command function comprises a multi-stage command function, a traffic command function, a bridge command function, a real-time recording function and an emergency command function; the service telephone function comprises an automatic telephone function, a conference telephone function and a shore line function.

The ship internal communication system of the present invention includes: the system comprises a plurality of loop stations, an emergency loop station, a plurality of power supplies, a plurality of transfer boxes, a conversion box, a plurality of command extensions, a plurality of battle station extensions, a plurality of telephones, a radio recorder, a time recorder, a test box and a shore connection interface;

wherein, the loop station completes the function of the digital SPC exchange; all loop stations are connected in sequence to form a closed annular digital communication network;

the emergency loop station completes the function of the emergency command communication network digital program control exchanger;

the command extension is connected with the loop station; the command extensions comprise bridge command telephone boxes, primary command extensions, secondary command extensions and emergency command extensions, and the fighting positions are subjected to a loudspeaker command function; the bridge command telephone box is arranged on the bridge, and the first-level command extension set and the second-level command extension set are arranged at the captain or the department length part; the bridge command telephone box completes function conversion with the first-level command extension through the conversion box; the priority of the bridge command telephone box is higher than that of the first-level command extension set, and the priority of the first-level command extension set is higher than that of the second-level command extension set; the emergency command extension is used for the loud-speaking command of the emergency command communication network and completes the function conversion with the first-level command extension through the conversion box;

the battle station extension set is arranged at each battle station in the ship and is connected to the loop station directly or through a junction box; the battle position extensions of the important battle positions are simultaneously connected to the emergency loop station through the transfer box;

the telephone is used for guaranteeing daily combat training, administrative management and life communication in the ship and is directly connected to the loop station or connected to the loop station through the transfer box according to the distribution condition of the using positions in the ship;

the radio recorder provides a system literary and art broadcasting function, and a loop station is connected through the transfer box; the radio recorder is broadcasted by a control switch of a primary command extension set; the extension of the battle station has the function of listening to the broadcast;

the time-sound recorder is connected with the link station through the transfer box and is used for recording voice signals of both parties in communication in the commanding or training process; the time-sound recorder is controlled by the primary command extension set;

the test box is connected with the loop station and is used for performing data query and test functions on the system;

the shore line interface is connected with the loop station through the transfer box and is used for being connected with a shore line system when a ship is in shore to realize the communication function between the interior of the ship and the exterior line.

Preferably, the loop stations are connected to adjacent loop stations by PCM2M digital trunk interfaces.

Preferably, the first-level command extension set and the second-level command extension set have the function of a telephone set at the same time.

Preferably, the system also comprises a standby telephone box which is used as a backup for the bridge command telephone box.

Preferably, the command form of the battle station extension is half-duplex loudspeaking command.

Preferably, the system also comprises a flash ring divider, wherein the flash ring divider is connected with the telephone in series and is used for carrying out flash prompt when the telephone rings.

Preferably, the command extension carries out signaling transmission with the phase loop station through an RS422 serial port.

Preferably, when the command extension set receives calls of a plurality of battle station extension sets at the same time, the command extension set carries out half-duplex communication with each battle station extension set.

Has the advantages that:

the ship internal communication system provided by the invention successfully realizes the integration of functions such as ship command telephone, service telephone, loud-speaking broadcast and recording on a set of equipment; the digitization of the transmission kernel of the command communication equipment in the ship is realized; the bottleneck that the original ship internal communication system can only provide one command speech path during communication command is solved. The system design adopts a mode of combining an emergency command communication network and a normal command communication network for command communication, and the reliability and the survivability of command communication in the ship are ensured. The technical system for digitalizing the inner core of the command communication equipment in the ship and simulating the battle station terminal has the best cost effectiveness ratio, is suitable for the requirement condition of naval communication equipment, and has the advantages of low cost and batch production. The system has the advantages of flexible configuration, strong expandability, high reliability and suitability for the severe working environment of ships.

Drawings

Fig. 1 is a schematic structural diagram of a ship internal communication system according to the present invention.

Wherein, 1-loop station, 2-emergency loop station, 3-power supply, 4-transfer box, 5-transfer box, 6-first-level command extension, 7-second-level command extension, 8-emergency command extension, 9-battle station extension, 10-telephone, 11-flash bell distributor, 12-bridge building command box, 13-standby box, 14-radio recorder, 15-time recorder, 16-test box and 17-shore line interface.

Detailed Description

The invention is described in detail below by way of example with reference to the accompanying drawings.

The present invention provides a ship internal communication system, as shown in fig. 1, including: the system comprises a plurality of loop stations 1, emergency loop stations 2, a plurality of power supplies 3, a plurality of transfer boxes 4, a conversion box 5, a primary command extension 6, a plurality of secondary command extensions 7, an emergency command extension 8, a plurality of battle station extensions 9, a plurality of telephones 10, a plurality of flash ring-separating devices 11, a bridge command telephone box 12, a standby telephone box 13, a radio recorder 14, a time recorder 15, a test box 16 and a shore connection interface 17.

The system is an annular digital communication network formed by annularly connecting more than two annular ring stations 1 through coaxial cables, and each user terminal is connected to the corresponding ring station 1 in a star-shaped mode to complete the functions of ship loudspeaking command, service telephone, literature broadcast and system setting and testing. The system comprises a plurality of loudspeaker command functions, a plurality of voice command functions, a plurality of bridge command functions, a plurality of voice recording functions and a plurality of emergency command functions, wherein the loudspeaker command functions of the system comprise a multi-stage command function, a traffic command function, a bridge command function, a real-time voice recording function and an emergency command function; the service telephone function of the system comprises an automatic telephone function, a conference telephone function and a shore line function.

The loop station 1 performs the function of a digital program controlled exchanger, and is used as a core part of the system for information exchange among all extensions in the system and signal transmission among the loop stations 1. Each loop station 1 is provided with two PCM digital relay interfaces which respectively carry out information transmission with the loop stations 1 in two directions, and the loop stations 1 are interfaced in a PCM2M digital relay mode to form a closed loop communication network. The basic capacity of each loop station 1 can reach 64 doors, and the loop station is provided with a command extension interface, a user interface, a test interface and a power input interface. Each loop station 1 comprises two parts, hardware and software. The hardware part consists of a speech path and a control system, the speech path system comprises a user module, a command module, a shoreline module and a digital relay interface, the control system consists of a user main control unit, a relay main control unit and a communication main control unit, data of the user, the relay and the communication interface are respectively processed, and communication among the main control units adopts a singlechip bit bus mode. The software part consists of user software, 2M software and communication software, wherein the user software is responsible for monitoring and scanning a user line, receiving a dialing signal, controlling driving, calling processing and managing the user state, and is also responsible for data exchange between a bit bus and the relay main control unit and the communication main control unit; the 2M software is responsible for voice and signaling transmission and processing among the loop stations 1, monitors the normal operation of a PCM2M port, dynamically selects a local direction, and automatically opens or closes a relay circuit to realize the conference function of the system; the communication software is responsible for signaling transmission between the loop station and the commander extension, and is matched with the test box 16 to complete the test and query functions of the level, the battle position attribution, the signaling group, the loop station test and the like of the commander extension. The user terminal and the command extension which are connected with the interface of each loop station 1 in the system are different, and the software is different.

The emergency loop station 2 is a standby digital program control exchanger of the system, completes the function of the digital program control exchanger of the emergency command communication network, and is used for information exchange among all extensions in the emergency command communication network. The principle of the emergency loop station 2 is basically the same as that of the loop station 1, and the differences are mainly as follows: the hardware of the emergency loop station 2 does not need a shore line module, a digital relay interface and a relay main control, and the software does not need 2M software.

And the power supply 3 provides direct current power supply for the loop station 1, the emergency loop station 2 and other extension sets in the station. The input voltage is alternating current 220V and 50 Hz. In order to improve the efficiency and reliability, the switching power supply module is adopted, two groups of power supplies are connected in parallel to supply power, and when one group of power supplies fails, the other group of power supplies can still provide power for equipment.

The bridge tower command telephone box 12, the standby telephone box 13, the first-level command extension 6, the second-level command extension 7 and the emergency command extension 8 are the loudspeaking command terminals of the system. Wherein: the bridge water pressure resistant command speech box 12 is used for the captain to carry out command in the bridge; the first-level command extension set 6 can be arranged at the captain or the department length part and used for the captain or the department length to carry out command, and the second-level command extension set 7 is arranged at the department length part and used for the department length to carry out command; the first-level commanding extension 6 is used in preference to the second-level commanding extension 7, the captain commands through the first-level commanding extension 6, when the captain needs to conduct at the bridge, the function conversion of the first-level commanding extension 6 and the bridge commanding telephone box 12 is completed through the conversion box 5, and the bridge commanding telephone box 12 has the highest priority. The first-level command extension 6 and the second-level command extension 7 also have the function of a telephone. The emergency command extension 8 is used for the loudspeaker command of the emergency command communication network and also completes the function conversion with the primary command extension 6 through the conversion box 5. The spare voice box 13 serves as a backup for the bridge command voice box 12. The command extensions (including a first-level command extension 6, a second-level command extension 7 and an emergency command extension 8) are command terminals of the system, can be designed into different capacities according to needs, and can contain telephone functions. The hardware of the command extension set mainly comprises a main control unit, an interface unit, a microphone, a loudspeaker and the like. The main control unit comprises a single chip microcomputer, a keyboard display circuit and an RS422 serial port circuit, wherein the single chip microcomputer scans the keyboard input and the serial port at regular time, performs data analysis, starts a corresponding program and performs instant processing. The software of the command extension is used for establishing various data and tables for the single chip microcomputer to inquire and call when the command extension is powered on, the keyboard display circuit is used for the functions of keyboard scanning and data inputting storage, display data storage, display driving and the like, and the RS422 serial port is used for signaling transmission between the command extension and the loop station. The input signal of the microphone is amplified by the interface unit, passes through the output transformer and then is sent to the voice input port of the loop station through the cable.

The transfer box 4 is used for flexible transfer of the loop station 1 to user terminals distributed throughout the ship.

The battle position extension set 9 is a loudspeaking command communication terminal used for battle positions, and is directly connected to the corresponding loop station 1 or connected to the corresponding loop station 2 through the adapter box 4 according to the distribution situation of the battle positions in the ship, and the battle position extension set 9 of an important battle position is simultaneously connected to the emergency loop station 2 through the adapter box. The command form of the battle station extension set 9 is half-duplex loudspeaking command. By operating the call key, the command extension to which the call belongs can be called. The station extension 9 is composed of ringing current detection circuit, amplification circuit, control circuit, loudspeaker, external microphone, calling key and volume control. The ringing current detection circuit receives a call signal from the loop station 1 and starts a control signal. The amplifier circuit amplifies the microphone signal and sends it to the subscriber line, and the voice signal from the subscriber line is amplified and sent to the loudspeaker.

The telephones 10 are used for guaranteeing daily combat training, administrative management and life communication in the ship, are directly connected to the corresponding loop stations 1 or connected to the telephones 10 distributed at the positions with poor environment such as high noise and the like through the transfer boxes 4 according to the distribution conditions of the using positions in the ship, and can be connected with the flash ring-separating devices 11 in series. The flash ring splitter 11 is used for flash prompting when the telephone rings.

The radio cassette recorder 14 provides a system art broadcasting function. The radio recorder 14 occupies one port in one loop station 1, the switch of the radio recorder is controlled by the first-level commander extension 6, and the radio recorder can listen to the radio by the battle station extension 9.

The time recorder 15 is used for recording voice signals of both parties in communication in a command or training process. Whether the system enters a recording state or not is controlled by a primary command extension set 6.

The bridge command telephone box 12 and the standby telephone box 13 are converted with the command extension set through the conversion box 5 for the commander to use when commanding in the bridge, and the priority is given to the command extension set.

The test box 16 is used for data query and test functions of the system. Corresponding commands are input through the test box and sent to the communication main control unit of the loop station 1 through the RS232 serial port, and the functions of setting, testing and inquiring the command extension level, the battle station attribution, the command group and the like are completed.

The shoreline interface 17 is used for connecting with a shoreline system when a ship is in shore to realize the function of communication between an interior line and an exterior line of the ship.

The implementation of the functions of the system is further described below with reference to fig. 1.

The multi-level command function of the system is mainly embodied in the aspects of command priority, command extension calling of a battle station extension, command extension calling of a telephone, telephone calling of a command extension, and the like. The command priority is set by programming, the priority of the first-level command extension 6 is higher than that of the second-level command extension 7, when the first-level command extension 6 overrates a battle station extension 9 under the second-level command extension 7, the second-level command extension 7 can not carry out command, the priority of the bridge command telephone box 12 is higher than that of all the command extensions, when the push-to-talk key of the bridge command telephone box 12 is operated to carry out bridge command, other command extensions can only monitor and can not carry out command, the standby telephone box 13 is standby equipment of the bridge command telephone box 12, and the command extension has a priority telephone 10 during telephone communication, namely when any two telephones are in a service conversation state, the extension command can be inserted immediately. When a command extension calls a certain battle station extension 9, firstly, a battle station key which needs to be called is operated on a panel of the command extension, after a single chip microcomputer in the command extension recognizes the input of a signal of the key, a corresponding program is started, signaling transmission is carried out with a connected loop station 1 through an RS422 serial port, the loop station 1 is communicated with program control exchange, a ringing current detection circuit of the called battle station extension 9 receives a calling signal of the loop station 1, an indicator lamp on the battle station extension 9 is controlled to be on, the communication of a speech path is indicated, and a commander can command the battle station. When the command extension set is called by the battle position extension set 9, the calling key on the battle position extension set 9 is operated, the loop station 1 detects the calling signal, the program control exchange is conducted to connect the corresponding command extension set, the corresponding battle position indicating lamp of the command extension set is flashing, the calling sound is generated at the same time, the speech path is connected, and the half-duplex communication can be conducted. The command extension set can simultaneously receive the calls of a plurality of battle position extension sets and carry out half-duplex communication with the command extension sets, and each battle position extension set 9 has a calling relation (lower indication and upper indication) with the only corresponding department command extension set. When the command extension telephone calls the telephone 10, the number of the telephone 10 is keyed in the command extension telephone, the program control exchange is conducted through the loop station 1, the corresponding telephone rings, the loop station 1 sends back the ring tone to the command extension telephone, and the telephone can talk when the telephone is off-hook. In the communication process, the command extension set can not carry out other command operation, when a battle position calls the command extension set, the command extension set is provided with a prompt tone and a calling instruction, and the disconnection can be carried out by operating a disconnection key or hanging up a telephone set on the command extension set. When the telephone calls the command extension, the telephone number of the command extension is keyed in on the telephone, if the corresponding command extension is idle, the response key indicator lamp is on, the telephone listens the ring back tone, and presses the response key on the command extension, thus the full duplex communication can be carried out.

The command function of the system needs to set the battle position command group in advance through programming, and the battle position in the command group can be set through the test box 16 (preprogramming command) or can be temporarily set on the command extension (programmable command). When the command is carried out, the command key is operated on the command extension set to enter a command state, all the battle positions in the command set can be commanded on the command extension set, the talk-back can be carried out by operating the talk key on the battle positions, but the battle positions cannot be heard. When the first-level commander extension 6 is in command, all the battle positions (including the second-level commander extension 7) in the command group are immediately connected, and whether the battle positions are in a call state or not, the battle positions which are in call with the first-level commander extension 6 cannot be interrupted when the second-level commander extension 7 is in command.

The bridge commanding function of the system is used for commanding the inboard battle position by a commander when the bridge is built, switching on a power switch of the conversion box 5 and pressing a conversion key of the conversion box 5, so that the system is in a bridge commanding state, and at the moment, the commander can command the battle position by a command extension (a primary command extension 6 or an emergency command extension 8) through a bridge command telephone box 12 or a standby telephone box 13.

When the real-time recording function is performed, after the commander extension and the battle station extension 9 or the telephone 10 form a channel, the recording key on the commander extension is operated to control the on-time sound recorder 15 to start recording the voice, and then the recording key is operated, the on-time sound recorder 15 is turned off to stop recording.

The emergency command function of the system refers to command implemented through an emergency loop network. The battle station extension set 9 of the important part is connected to the loop station 1 and the emergency loop station 2 through the transfer box 4, and if necessary, the power supply 3 of the emergency loop station 2 is switched on, and the normal loop network is switched to the emergency loop network. And the commander carries out emergency command through the emergency command extension set 8. The corresponding battle position is called by operating a battle position name key on a panel of the emergency command extension set 8, and the corresponding battle position connected with the emergency loop station 2 can call the emergency command extension set 8. In principle, the telephone 10 may also be connected to an emergency loop network, but the system is intended to ensure emergency command communication.

When the system performs the automatic telephone function, the number of the called telephone 10 is dialed on the calling telephone 10, the called telephone 10 rings when idle through the program control exchange of the loop station 1, and the two parties can communicate after the telephone is off the hook. The telephone 10 in the poor environment part is connected with the flash ring-separating device in series, when the telephone with the flash ring-separating device rings, the flash lamp flashes rhythmically to play a role in prompting. When the system performs the telephone conference function, the authorized telephone 10 dials the conference function number, the corresponding idle telephone 10 in the conference group rings, and the conference call can be participated by off-hook.

When the system realizes the shore line function, firstly, a shore line cable is connected through a shore line interface 17 when a ship needs to be in shore, one telephone 10 in the system is set as an on-duty telephone, and incoming and outgoing calls of the shore line are all switched by the on-duty telephone.

The literature and art broadcasting function is an auxiliary function of the system, when the literature and art broadcasting is required to be carried out, the radio recorder 14 is turned on, a commander operates a broadcasting control key on the commanding branch machine, the literature and art broadcasting signals sent by the radio recorder 14 are sent to all the battle station extension sets 9 through the looped network, and the literature and art broadcasting signals are broadcasted through the loudspeakers of the battle station extension sets 9, so that the battle station listens to the literature and art broadcasting.

The system setting and testing functions are performed through the test box 16, the loop station 1 is provided with a test interface circuit, the test box 16 is connected into a test socket of the loop station 1, fault detection is performed on the system through a man-machine command, and a test result is displayed. Corresponding commands are input by operating a keyboard of the test box and are sent to a communication main control unit of the loop station 1 through an RS232 serial port, and the functions of setting, testing and inquiring the level of a command extension, the position attribution, a command group and the like can be completed.

Example (c):

in the ship internal communication system, the loop stations 1 are designed to have a basic capacity of 32 gates in the present example in combination with ship characteristics, and each loop station 1 has two pairs of relay interfaces, four command extension interfaces, two user interfaces, one power supply interface and one test interface. The main control unit of the loop station 1 adopts an 80C31 singlechip system, and the switching network adopts serial ports of integrated circuits C8010 and 80C31 to be connected to the bit bus through RS422 differential driving/receiving devices, and transmits information with the relay main control unit and the communication main control unit; the switching network of the relay main control unit is realized by adopting an integrated circuit MT8980, and the relay interface circuit consists of integrated circuits MT89790, MT8952, MT8920 and the like; in this example, the subscriber unit in the link station 1 performs secondary decoding, so that the CPU and the switching network integrated circuit can access a specific port module, isolate and drive various signals necessary for the port, and then transfer the signals to each port module, thereby providing overcurrent protection for the port, and the like, and the subscriber module includes a subscriber transceiver, a subscriber line impedance matching circuit, a balanced network, a subscriber line state monitoring circuit, a ringing current monitoring circuit, and an a-law codec and filter integrated circuit TP3067 BN. The loop station 1 is provided with three common signal tone generators, two DTMF generators and six DTMF decoders, the decoders are realized by adopting MC145436, and the decoding is directly read by a CPU to complete the function of receiving the signal of the loop station to the dual-tone telephone. The sender employs TP5088 for analog call or relay forwarding and for generation of extension control signaling. The communication main control unit of the loop station 1 adopts a microcomputer universal serial interface chip 8250 and an RS422 interface chip MC3486/MC3487 to form a signal interface with a command extension; the RS232 interface chip MAX232 is used to form a signal interface with the test cartridge 16. The speech path interface between the loop station 1 and the command extension adopts a PCM coding and decoding integrated circuit TP 3067.

The power supply (3), which in this example consists of a DC/DC conversion module and a DC/AC conversion module, generates the +5V, -5V DC voltage and the 75V, 25Hz ringing voltage required by the loop plant.

The command extension (including the first-level command extension 6, the second-level command extension 7 and the emergency command extension 8) in the present embodiment adopts an 80C31 single chip microcomputer as a main control unit, an INTEL8279 chip as a keyboard/display interface, and an operational amplifier LM322, a power amplifier TDA2611A, a control relay and a power supply module PCK2132 as an interface unit.

The battle station extension 9 in this example is composed of a device board, a speaker, an external microphone, a call key and volume control. Wherein: the device board is composed of a ringing current detection circuit, an operational amplifier LM347, a power amplifier TDA2611A and the like.

The telephone 10, the radio cassette recorder 14, and the time recorder 15 are commercially available products that have been modified in this example.

The test cartridge 16 is composed of a main control unit, a power supply unit, a membrane keypad, a digital display, and the like in this example. The main control unit comprises an 80C31 single chip microcomputer, an 82C79 keyboard display interface and an RS232 serial port control circuit.

Aiming at special requirements of ships, the invention uses digital program control exchange technology and loop structure digital relay communication technology to make the system simple and flexible in structure and strong in reliability and maintainability.

In summary, the system adopts the technologies of voice digital processing, time division program control exchange, loop bus transmission, microprocessor control and the like, more than two loop stations are connected in a ring shape through coaxial cables to form loop configuration, and each user terminal is connected to the corresponding loop station in a star-shaped mode to form the ship internal comprehensive communication system with the characteristics of signal digital transmission bus, management programming, interface standardization and the like. The system completes the functions of loud speaker command, service telephone, literature and art broadcasting, system setting and testing in the ship. The loudspeaker command function comprises a multi-stage command function, a traffic command function, a bridge command function, a real-time recording function and an emergency command function; the service telephone function comprises an automatic telephone function, a conference telephone function and a shore line function. The system adopts a mode of combining an emergency command communication network and a normal command communication network for command communication, and ensures the reliability and survivability of command communication in the ship.

In summary, the above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (8)

1. An internal communication system for a ship, comprising: the system comprises a plurality of loop stations (1), emergency loop stations (2), a plurality of power supplies (3), a plurality of transfer boxes (4), a conversion box (5), a plurality of command extensions, a plurality of battle station extensions (9), a plurality of telephones (10), a radio recorder (14), a time recorder (15), a test box (16) and a shore connection interface (17);

wherein, the loop station (1) completes the function of the digital stored program control exchanger; all the loop stations (1) are connected in sequence to form a closed loop digital communication network;

the emergency loop station (2) completes the function of the emergency command communication network digital program control exchanger;

the command extension is connected with the loop station (1); the command extensions comprise a bridge building command telephone box (12), a first-level command extension (6), a second-level command extension (7) and an emergency command extension (8), and the fighting positions are subjected to a loudspeaker command function; wherein, the bridge command telephone box (12) is arranged on the bridge, and the first-level command extension (6) and the second-level command extension (7) are arranged on the captain or the department length; the bridge command telephone box (12) completes function conversion with the first-level command extension (6) through the conversion box (5); the priority of the bridge command telephone box (12) is higher than that of the first-level command extension (6), and the priority of the first-level command extension (6) is higher than that of the second-level command extension (7); the emergency command extension (8) is used for the loudspeaker command of the emergency command communication network and completes the function conversion with the primary command extension (6) through the conversion box (5);

the battle station extension sets (9) are arranged at each battle station in the ship and are connected to the loop station (1) directly or through the transfer box (4); the battle position extension sets (9) of the important battle positions are simultaneously connected to the emergency loop station (2) through the transfer boxes (4);

the telephone (10) is used for guaranteeing daily combat training, administrative management and life communication in the ship and is connected to the loop station (1) directly or through the transfer box (4) according to the distribution situation of the using positions in the ship;

the radio cassette tape recorder (14) provides a system literature and art broadcasting function and is connected with the loop station (1) through the transfer box (4); the radio recorder (14) is controlled by a first-level command extension (6) to be switched and broadcasted; the battle station extension (9) has the function of listening to the broadcast;

the time-sound recorder (15) is connected with the road station (1) through the transfer box (4) and is used for recording voice signals of both parties in communication in the commanding or training process; the time-sound recorder is controlled by a primary command extension (6);

the test box (16) is connected with the loop station (1) and is used for performing data query and test functions on the system;

the shore line interface (17) is connected with the loop station (1) through the transfer box (4) and is used for being connected with a shore line system when a ship is in shore to realize the communication function between the interior and the exterior of the ship.

2. Marine intercom system as in claim 1, characterized in that a loop station (1) is connected to an adjacent loop station (1) by means of a PCM2M digital trunk interface.

3. Marine intercom system as in claim 1, characterised in that said primary command extension (6) and secondary command extension (7) are simultaneously telephone-enabled.

4. Marine vessel intercom system according to claim 1, further comprising a backup phone box (13) as a backup for the bridge command phone box (12).

5. Marine vessel intercom system as in claim 1, characterised in that the command form of the station extension (9) is a half-duplex loudspeaking command.

6. An intercom system as in claim 1 further comprising a flash ring splitter (11), said flash ring splitter (11) being connected in series with the telephone (10) for flash alerting upon ringing of the telephone.

7. Marine vessel intercom system according to claim 1, characterised in that the command extensions are in signalling with the phase loop station (1) via an RS422 serial port.

8. The marine intercom system of claim 1, wherein the commander extension makes a half-duplex call with each of the station extensions when receiving calls from a plurality of station extensions simultaneously.

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