KR102556630B1 - Daisy chain type speaker output system for ships using power line communication - Google Patents

Abstract

The present invention relates to a speaker output system for a ship built in a ship so that broadcasting through audio output can be performed in a plurality of spaces in the ship using a power line already installed in the ship, and includes a voice input means and TCP/IP (Transmission Control Protocol) /Internet Protocol) Ethernet communication network is established and interconnected, the input terminal of AC power provided on one side is electrically connected to the power line, and the digital voice signal received from the voice input means is converted into a power line communication signal. a daisy chain main unit that converts and transmits data through the power line; And it is installed in a plurality of spaces in the ship, and a communication network is established in a daisy chain manner through the daisy chain main unit and the power line, and a power line communication signal transmitted from the daisy chain main unit is received and the power line It includes; a plurality of speaker units for performing audio output by preparing a decoded audio signal based on the communication signal.

Description

Daisy chain method marine speaker output system using power line communication {DAISY CHAIN TYPE SPEAKER OUTPUT SYSTEM FOR SHIPS USING POWER LINE COMMUNICATION}

The present invention relates to a speaker output system for a ship constructed so that broadcasting through audio output can be performed in a plurality of spaces within a ship using a power line installed in the ship.

Power line communication, that is, PLC (Power Line Communication), refers to a communication technology that transmits voice and data on high-frequency signals of hundreds of kHz to tens of kHz or more using power lines that supply power.

The advantage of PLC is that it is easy to use electric wiring that is already in the home for communication, so you can connect to the network just by plugging the power plug into the outlet without having to wire a new cable, and you can build a network to every corner of the house. there will be

Based on these advantages, PLC is applied in various industrial fields. Recently, with the advancement of digital facilities and the expansion of communication systems, the need for optimization design for electric and communication lines in ships and reduction of ship construction costs has emerged. Even in the field of ships, there is a continuing need for the application of PLC technology.

Furthermore, as the development and commercialization of unmanned aerial vehicles are attempted, the need to supplement various disadvantages of the existing analog speaker output system and develop a more improved voice output and broadcasting system is increasing.

In this regard, in the prior art for the prior art prepared to enable communication within the ship itself using a power line without establishing a communication line within a ship, which is a single structure, Korean Patent Registration No. 10-0893917 "Ship using a three-phase power line" There is a "communication system within" (hereinafter referred to as 'prior art').

However, in the case of the PLC technology-based speaker output system applied to existing ships, including the prior art, only the line environment, which is a medium of signal transmission, has changed, and the line configuration is still complex and heavy, reducing the cost of ship construction. This was insignificant, and there was a problem that workability was not easy in determining the configuration of the built speaker output system.

In addition, in the case of a speaker output system based on PLC technology applied to existing ships, including the prior art, considerable costs are required for maintenance and management of the system, and work efficiency is also high in the method of performing such maintenance and management functions. There were minor problems.

The present invention was created to solve the above problems, and the object of the present invention is to completely supplement various disadvantages of the existing analog speaker output system in a ship through the grafting of PLC technology, and furthermore, the efficiency of structural design. It is to provide a speaker output system for ships that can increase performance and reduce costs in terms of cost.

In addition, an object of the present invention is to provide a speaker output system for a ship that can be easily expanded in terms of configuration and scale, and can be quickly and easily implemented in functional updates as well as maintenance and management of components.

In order to achieve the above object, a speaker output system for a ship using a daisy chain method using power line communication according to the present invention uses a power line already installed in the ship so that broadcasting through audio output can be performed in a plurality of spaces within the ship. It relates to a speaker output system for a ship built inside, which is interconnected by establishing a voice input means and a Transmission Control Protocol/Internet Protocol (TCP/IP) Ethernet communication network, and an AC power input terminal provided on one side of the power line a daisy chain main unit that is electrically connected to the power line and converts the digital voice signal received from the voice input unit into a power line communication signal and transmits it through the power line; And it is installed in a plurality of spaces in the ship, and a communication network is established in a daisy chain manner through the daisy chain main unit and the power line, and a power line communication signal transmitted from the daisy chain main unit is received and the power line It includes; a plurality of speaker units for performing audio output by preparing a decoded audio signal based on the communication signal.

Here, the daisy chain main unit may include: a noise filtering unit configured to perform noise filtering of 220V AC power input through the AC power input terminal to provide a communication line environment in which noise is removed from the power line; And a PLC (Power Line) that is interconnected with the voice input unit to build a TCP/IP Ethernet communication network, and is interconnected with the noise filter unit and the plurality of speaker units through the power line to build a communication network in a daisy chain manner. Communication) modem module;

In addition, the PLC modem module may include a master power line modem unit installed on the power line and converting a digital voice signal received from the voice input means into a power line communication signal; and a coupler unit that couples the power line communication signal converted through the master power line modem unit with a predetermined carrier frequency and transmits the coupled signal to the plurality of speaker units.

In addition, the speaker unit may include an input unit for receiving a carrier frequency-coupled power line communication signal from the PLC modem module corresponding to an input terminal connected to the PLC modem module through the power line; a power distribution unit converting AC power input through the power line connected to the input unit into DC power through a switched-mode power supply (SMPS) method and supplying the power to the speaker unit as operating power; a daisy chain conversion module for converting and processing the carrier frequency-coupled power line communication signal received through the input unit into an outputtable audio signal; and a speaker unit outputting an audio signal prepared in an outputtable form through the daisy chain conversion module.

In addition, the daisy chain conversion module decouples the carrier frequency-coupled power line communication signal received through the input unit and converts the power line communication signal separated and detected through the decoupling into a digital voice signal Slave power line modem wealth; and SIP (Session) which decodes the digital voice signal converted through the slave power line modem unit into a voice signal outputtable through the speaker unit through a digital codec (Codec) installed therein and provides the decoded voice signal to the speaker unit. Initiation Protocol) gateway unit; includes.

According to the present invention, there are the following effects.

First, it is possible to provide a digital voice signal-based speaker output system without complicated redesign of the line structure by constructing a new network for outputting voice signals together with a TCP/IP Ethernet communication network by utilizing existing power lines. there is.

Second, as the interconnection structure between the daisy chain main unit and the plurality of speaker units is provided as a communication network in a daisy chain manner through power lines, redundant paths of lines are eliminated and efficient and lightweight redundant paths are provided. Shipbuilding work efficiency and cost reduction can be expected.

Third, expansion work regarding the configuration of the entire additional system or speaker unit can be quickly and easily performed due to the interconnection structure between the daisy chain main unit and the plurality of speaker units.

Fourth, not only maintenance and management of speaker units installed in various locations in the ship, but also functional improvement or supplementation through functional update can be efficiently and easily performed.

Fifth, the technical idea of the speaker output system for ships using a daisy chain method using power line communication can be applied not only to ships but also to a separate object or environment on land, which has high economic and technological utilization.

1 is a block diagram showing detailed configurations within a daisy-chain method marine speaker output system using power line communication according to the present invention.
2 is a flowchart for explaining an operation form in a voice output process between detailed components in a speaker output system for a ship using a daisy chain method using power line communication according to the present invention.
3 is a flow chart showing the progress of a voice output function in a speaker output system for a ship using a daisy chain method utilizing power line communication according to the present invention.

A preferred embodiment of the present invention will be described in more detail with reference to the accompanying drawings, but already well-known technical parts will be omitted or compressed for conciseness of description.

Referring to FIGS. 1 to 3, the speaker output system 10 for a ship using a daisy chain method utilizing power line communication of the present invention outputs audio to a plurality of spaces within the ship using a power line (L) previously installed on the ship. A speaker output system for a ship built in a ship so that broadcasting can be made through the ship, and for this purpose, a daisy chain main unit 100; and a speaker unit 200.

The daisy chain main unit 100 receives digital audio signals, converts them into power line communication signals, and transmits them to a plurality of speaker units 200 through power lines L. To this end, as shown in FIG. Similarly, it includes a noise filter unit 110 and a PLC modem module 120.

Specifically, the daisy chain main unit 100 establishes a transmission control protocol/internet protocol (TCP/IP) Ethernet communication network with a voice input means (not shown) to receive digital voice signals and is connected to each other.

Accordingly, the digital voice signal generated by the voice input means (not shown) is received by the daisy chain main unit 100 in a wired or wireless network communication method.

Here, the voice input means is a kind of broadcasting equipment equipped with a microphone, and when a voice signal is input by making a sound, the analog voice signal is converted into a digital voice signal through a separate codec and then transmitted through a TCP/IP Ethernet communication network to the daisy chain main sent to unit 100.

In addition, the daisy chain main unit 100 has an AC power input terminal 110P provided on one side in order to transmit a conversion signal based on a digital voice signal to a plurality of speaker units 200 by using a power line L. ) is electrically connected to the power line (L).

Here, the AC power input terminal 110P corresponds to an electrical inlet means for allowing AC power and signals to move from an external power source or from a separate power supply means or switchboard through the power line L.

First, as shown in FIGS. 2 and 3, the noise filter unit 110 performs noise filtering (S110) of AC power of 220V input through the AC power input terminal 110P so that noise is removed from the power line (L). The removed communication line environment is prepared.

Here, the noise filter unit 110 is configured to reduce the noise of the communication network environment of the daisy chain method through the power line L between the daisy chain main unit 100 and the speaker unit 200 through noise filtering (S110). Through the same noise cancellation, packet loss of a remote node is prevented, and signal transmission/reception can be smoothly performed and quality improved.

Next, the PLC (Power Line Communication) modem module 120 is interconnected with a voice input means (not shown) to build a TCP/IP Ethernet communication network, and the noise filter unit 110 and a plurality of speaker units 200 and are interconnected through power lines (L) to construct a communication network in a daisy chain manner.

Through this, the PLC modem module 120 converts the received digital voice signal by utilizing a daisy chain communication network environment through the power line L between the chain main unit 100 and the speaker unit 200. , and includes a coupler unit 121 and a master power line modem unit 122 as shown in FIG. 1 for coupling and transmission.

First, the master power line modem unit 122 is installed on the power line L and converts a digital voice signal received from a voice input means (not shown) into a power line communication signal (S120).

Here, the digital voice signal includes information about the data stream and the destination IP address, and even after being converted into a power line communication signal, the corresponding information is maintained and the signal structure is maintained as it is when reconverted into a digital voice signal later.

Therefore, as shown in FIGS. 2 and 3, the master power line modem unit 122 receives a digital voice signal from a voice input means (not shown) connected through a TCP/IP Ethernet communication network, and the signal moves through the power line. It performs the function of converting (S120) to the form of a power line communication signal so that it can be used.

Next, the coupler unit 121 couples the power line communication signal converted through the master power line modem unit 122 with a preset carrier frequency (Coupling, S130) and transmits it to the plurality of speaker units 200 (S140) do.

Here, the coupler unit 121 first converts the digital voice signal into a power line communication signal through the master power line modem unit 122 (S120), and then converts the power line communication signal to the carrier frequency (carrier frequency). A kind of modulation process of loading by coupling (S130) proceeds, which is to send a signal to a plurality of speaker units 200 using a daisy chain communication network environment through the power line (L).

Subsequently, the coupler unit 121 transmits the power line communication signal to the plurality of speaker units 200 using a daisy chain communication network environment through the power line L in a state where the power line communication signal is coupled to the carrier frequency ( S140).

Here, since the movement of the power line communication signal between the PLC modem module 120 and the speaker unit 200 is based on a daisy chain communication network environment, the speaker output system to which the existing PLC technology is applied and Otherwise, a redundant wiring structure can be eliminated as much as possible, and an efficient and lightweight wiring structure can be provided, and the work time and cost required for system construction can be much lowered.

Furthermore, since the movement of the power line communication signal between the PLC modem module 120 and the speaker unit 200 is based on a daisy chain communication network environment, the extension of the speaker unit 200 or the entire system There is no operational difficulty in adding a separate structural module in (10), and the expansion, improvement or security of the embodiment can be made quickly and easily.

According to implementation, in the entire system 10, a separate remote diagnosis means (computer, tablet, control terminal or management program, etc.) is interconnected with the daisy chain main unit 100 through a TCP/IP Ethernet communication network. An additional configuration is provided, or a separate detailed configuration with a remote diagnosis function is provided to the voice input means (not shown) described above, and a daisy chain type communication network environment is used so that the administrator can easily It may be implemented to easily identify the speaker unit 200 requiring repair.

Specifically, the abnormal remote diagnosis unit in the remote diagnosis unit or voice input unit (not shown) includes a daisy chain main unit 100 and a plurality of speaker units 200 constructing a daisy chain communication network environment. By sending a signal for diagnosing an abnormality, the movement of the signal is blocked and the position of the speaker unit 200 where the signal is not properly output is checked so that the speaker unit 200 can be processed collectively without the need to verify the presence or absence of abnormality. do.

This is because the plurality of speaker units 200 and the chain main unit 100 build a communication network environment of the Daisy Chain method. Ease of work in diagnosing abnormality is ensured by confirming how far it is output.

The speaker unit 200 is installed in a plurality of spaces in the ship, respectively, and has a configuration in which a communication network is established in a daisy chain manner through the daisy chain main unit 100 and the power line (L), and is provided in plurality for sufficient broadcasting. It is desirable to be implemented so that transmission is possible anywhere in the ship.

In addition, the speaker unit 200 receives the power line communication signal transmitted from the daisy chain main unit 100 and prepares a decoded audio signal based on the power line communication signal to perform audio output, as shown in FIG. It includes an input unit 210, a power distribution unit 220, a daisy chain conversion module 230 and a speaker unit 240.

First, the input unit 210 corresponds to an input terminal interconnected with the PLC modem module 120 through the power line L, and receives a carrier frequency-coupled power line communication signal from the PLC modem module 120.

Next, the power distribution unit 220 converts the AC power input through the power line L connected to the input unit 2100 into DC power through a switched-mode power supply (SMPS) method to operate the speaker unit 200. supply with power

Therefore, the power distribution unit 220 provides operating power necessary for the operation of the daisy chain conversion module 230 and the speaker unit 240 to be described later in the form of DC power.

Next, the daisy chain conversion module 230 converts the carrier frequency-coupled power line communication signal received through the input unit 210 to prepare it in the form of a voice signal that can be output through the SIP gateway as shown in FIG. unit 231 and a slave power line modem unit 232.

Here, the slave power line modem unit 232 decouples the carrier frequency-coupled power line communication signal received through the input unit 210 (S150), and separates and detects the power line communication signal through the decoupling into a digital voice signal. Convert (S150).

Specifically, as shown in FIGS. 2 and 3, the slave power line modem unit 232 separates the carrier frequency-coupled power line communication signal received through the input unit 210 by decoupling only the power line communication signal through decoupling. After performing demodulation for the purpose, the separately detected power line communication signal is converted back into a digital voice signal (S150).

In addition, the SIP (Session Initiation Protocol) gateway unit 231 transfers the digital voice signal converted through the slave power line modem unit 232 through the digital codec (Codec) installed therein through the speaker unit 240. The decoded audio signal is decoded into an outputtable audio signal, and the decoded audio signal is provided to the speaker unit 240 (S150).

Specifically, the SIP gateway unit 231 is provided in a form supporting a digital codec (Codec) installed in software, and converts the digital voice signal converted through the slave power line modem unit 232 into an analog form through decoding (S150). After converting the audio signal, it is provided to the speaker unit 240 (S150) so that audio can be output through the speaker unit 240.

Here, the SIP gateway unit 231 receives the digital voice signal converted through the slave power line modem unit 232, determines the audio output through the speaker unit 240 by checking the destination IP address included in the signal, It is preferable to design so that audio output through the speaker unit 240 can be performed only when the destination IP address corresponds to identification information preset for identification between the speaker units 200 .

According to implementation, a separate function management means (computer, tablet, control terminal or management program, etc.) is added in the entire system 10 in a form interconnected with the daisy chain main unit 100 through a TCP/IP Ethernet communication network. Provided, or a separate detailed configuration with a function management function is provided in the voice input means (not shown) described above, and the IP gateway unit 231 can perform technical management and maintenance of the digital codec (Codec) installed in software. there is.

For example, a manager transmits update data to the daisy chain main unit 100 using the above-described function management means, and provides it to the speaker unit 200 in the same manner as audio signal processing in the chain main unit 100. Thus, the IP gateway unit 231 in the daisy chain conversion module 230 can update the digital codec (Codec) installed in software.

As another example, the IP gateway unit 231 in the daisy chain conversion module 230 detects the normal operation of the digital codec (Codec) installed in software and the occurrence of an error in the same way as the voice signal processing in the chain main unit 100. A confirmation signal is sent to the speaker unit 200 for monitoring, and if an error is determined to occur, data for correcting it is transmitted to the daisy chain main unit 100, and the chain main unit 100 transmits data in the same manner as the audio signal processing. Functional repair of the digital codec (Codec) of the IP gateway unit 231 in the daisy chain conversion module 230 may be performed by providing it to the speaker unit 200.

Therefore, the decoupling and decoding steps (S150) shown in FIGS. 2 and 3 include, in detail, the decoupling process through the slave power line modem unit 232, the process of converting to a digital voice signal, and the decoding process through the SIP gateway unit 231. , proceeds sequentially to the process of providing the speaker unit 240.

Finally, as shown in FIGS. 2 and 3, the speaker unit 240 is a kind of audio output means for outputting (S160) an audio signal prepared in an outputtable form through the daisy chain conversion module 230, and is most preferably can be implemented in a form in which indoor speakers with specifications of 20W or less are accommodated and installed inside a separate enclosure.

The embodiments disclosed in the present invention are not intended to limit the technical idea of the present invention, but to explain, and the scope of the technical idea of the present invention is not limited by these embodiments. The scope of protection should be interpreted according to the claims below, and all technical ideas within the scope equivalent thereto should be construed as being included in the scope of the present invention.

10: Marine speaker output system
100: daisy chain main unit
110: noise filter unit
120: PLC modem module
121: coupler unit
122: master power line modem unit
110P: AC power input terminal
200: speaker unit
210: input unit
220: power distribution unit
230: daisy chain conversion module
231: SIP gateway unit
232: slave power line modem unit
240: speaker unit
L: power line

Claims (5)

In the ship speaker output system built in the ship so that broadcasting through audio output can be made in a plurality of spaces in the ship using a power line already installed in the ship,
The voice input means and the TCP/IP (Transmission Control Protocol/Internet Protocol) Ethernet communication network are established and interconnected, and the AC power input terminal provided on one side is electrically connected to the power line, and the voice input means a daisy chain main unit that converts a received digital voice signal into a power line communication signal and transmits it through the power line;
It is installed in a plurality of spaces in the ship, and a communication network is established in a daisy chain manner through the daisy chain main unit and the power line, and power line communication is received by receiving a power line communication signal transmitted from the daisy chain main unit. a plurality of speaker units for performing audio output by preparing a decoded audio signal based on the signal; and
It is ideal for the plurality of speaker units connected to each other by establishing a TCP/IP Ethernet communication network with the daisy chain main unit and constructing a communication network in a daisy chain manner through the daisy chain main unit and the power line. Remote diagnosis means including; a remote diagnosis unit that transmits a diagnostic signal to check the position of the speaker unit where the movement of the signal is blocked and the signal is not output properly, and collectively verifies whether or not there is an abnormality in each speaker unit; Including,
The daisy chain main unit,
a noise filter unit for performing noise filtering of the 220V AC power input through the AC power input terminal so that a noise-removed communication line environment is provided in the power line; and
PLC (Power Line Communication) that is interconnected with the voice input means to build a TCP/IP Ethernet communication network, and is interconnected with the noise filter unit and the plurality of speaker units through the power line to build a communication network in a daisy chain manner. ) modem module;
The PLC modem module,
a master power line modem unit installed on the power line to convert the digital voice signal received from the voice input means into a power line communication signal; and
And a coupler unit for coupling the power line communication signal converted through the master power line modem unit with a preset carrier frequency and then transmitting it to the plurality of speaker units,
The speaker unit,
an input unit for receiving, from the PLC modem module, a power line communication signal to which a carrier frequency is coupled corresponding to an input terminal connected to the PLC modem module through the power line;
a power distribution unit converting AC power input through the power line connected to the input unit into DC power through a switched-mode power supply (SMPS) method and supplying the power to the speaker unit as operating power;
a daisy chain conversion module for converting and processing the carrier frequency-coupled power line communication signal received through the input unit into an outputtable audio signal; and
A speaker unit for outputting an audio signal prepared in an outputtable form through the daisy chain conversion module;
The daisy chain conversion module,
a slave power line modem unit for decoupling the power line communication signal coupled to the carrier frequency received through the input unit and converting the power line communication signal separated and detected through the decoupling into a digital voice signal; and
SIP (Session Initiation Protocol) gateway unit; characterized in that it includes
Daisy-chain marine speaker output system using power line communication. delete delete delete delete