KR101266825B1 - Method for dual controlling of 3-axis controlling satellite antenna in ship - Google Patents

Abstract

PURPOSE: A triaxial control satellite antenna dualization control method for a ship is provided to switch a satellite antenna according to a shadow area by duplexing the satellite antenna. CONSTITUTION: A communication control device monitors a shadow area for a first and second antenna devices based on a location of a current ship(ST3). The communication control device confirms beacon signal levels of signals applied from the first and second antenna devices(ST4). The communication control device switches from a preparative state into an operation state in the second antenna device based on shadow area monitoring information and beacon signal level information. When the first antenna device is located in the shadow area, the beacon signal level is lower than a predetermined level. When the second antenna device locates in a non-shadow area, the preparative state is switched into the operation state in the second antenna device. [Reference numerals] (ST1) Set a shadow area for a first and a second antenna device; (ST2) Transceive signals with a communication satellite(1) through an operation satellite antenna; (ST3) Monitor the shadow area of the operation satellite antenna; (ST4) Confirm the beacon signal levels of the operation satellite antenna and a preparative satellite antenna; (ST5) Switch the satellite antenna based on the shadow area information and the beacon signal level of the operation satellite antenna

Description

Method for dual controlling of 3-axis controlling satellite antenna in ship

The present invention relates to a three-axis control satellite antenna redundancy control method for a ship that can provide a more smooth communication environment by eliminating the shadow area of the satellite antenna installed on the ship.

Currently, ships are equipped with a wireless communication system via satellite to transmit and receive voice and data signals, and to send and receive information necessary for navigation to help the ship's safe operation.

The wireless communication system installed in the ship is configured to include a satellite antenna for transmitting and receiving satellite signals, and a communication device for processing signals transmitted and received through the satellite antenna.
The background art of the present invention is disclosed in Korean Patent Laid-Open Publication No. 10-2OOO-OO67631 (published on November 25, 2000) (name of the invention: a ship satellite communication antenna system).

In this case, the satellite antenna should be able to maintain a satellite link with the satellite at all times when the ship sails.

However, as shown in Fig. 1, the satellite antenna 3 installed on the bridge 2 of the ship is sailed by another structure of a certain size, such as a master 4, installed on the bridge 2, for example. Shadow areas may be generated in the communication link with the satellite communication satellite 1.

That is, when the satellite antenna 3 is located in the communication shadow area at the moment when the vessel transmits and receives information through the satellite, there may be a case where the transmission and reception of information is not performed properly.

Accordingly, the present invention has been made in view of the above-mentioned circumstances and by providing a ship satellite antenna redundancy control method that can eliminate the occurrence of the shadow zone of the satellite antenna by duplexing the satellite antenna and switching each other according to the shadow zone. There is a purpose.

The three-axis control satellite antenna redundancy control method for ships according to the present invention for achieving the above object is a ship antenna antenna redundancy configured by combining the first and second antenna devices symmetrically installed on the bridge of the ship with the communication control device. A control system comprising: a first step of setting shadow areas for first and second antenna devices, respectively, in the communication control device; and receiving signals provided through a first antenna device currently operating in the communication control device; And a second step of performing a signal transmission process through the first antenna device, and a third step of monitoring whether or not a shadow area for the first and second antenna devices is monitored by the communication control device based on the current position of the ship. Step 4, the beacon signal level of the signal applied from the first and the second antenna device in the communication control device, and the communication control , The beacon signal level is below the predetermined level and the current state of the first antenna device in the current operating state based on the shadow zone monitoring information and the beacon signal level information applied from the third and fourth stages. If the second antenna device is located in the non-shading area, it characterized in that it comprises a fifth step of switching the second antenna device that is currently in a standby state to the operating state.
In the fifth step, the communication control device may control the second antenna device not to be switched to an operation state when the beacon signal level of the second antenna device, which is currently reserved, is lower than or equal to a predetermined level.
In the fifth step, when the first antenna device currently operating in the communication control device and the second antenna device currently in the standby state are repeatedly switched for a predetermined number of times for a predetermined time, the transfer processing is stopped and finally, when the switching is stopped. It is characterized by forcibly setting the antenna device in the operating state to the operating state.
In addition, in the first step, the shadow area for the first and second antenna devices includes a shadow warning section including a shadow angle calculated based on the minimum rotation radius, the maximum speed, and the transfer time of the ship, and the shadow warning section. It is characterized in that it is set to the shadow attention interval of both guard areas.

According to the present invention, the satellite antenna installed on the ship is doubled to solve the shadow area of the satellite antenna, so that the user can be guaranteed safe ship operation anytime and anywhere when the user is provided with an improved call quality communication service.

1 is a view schematically showing a configuration of a general marine wireless communication system.
Figure 2 is a schematic system diagram of a three-axis control satellite antenna redundancy control system for ships applied to the present invention.
3 is a diagram illustrating an arrangement of the first and second satellite antennas 110 and 210 shown in FIG.
Figure 4 is a block diagram showing the functional separation of the internal configuration of the communication control device 300 shown in FIG.
FIG. 5 is a diagram showing an example of setting shadow area information of the redundancy control device 350 shown in FIG.
FIG. 6 is a diagram illustrating satellite antenna transfer priority of the redundancy control device 350 shown in FIG.
7 is an operation flowchart for explaining a three-axis control satellite antenna redundancy control method for ships according to the present invention.

Hereinafter, embodiments according to the present invention will be described with reference to the drawings. However, the embodiments described below represent one preferred embodiment of the present invention, and are not intended to limit the scope of the present invention. The present invention can be variously modified and carried out without departing from the technical gist thereof.

2 is a view showing a schematic configuration of a three-axis control satellite antenna redundancy control system for ships applied to the present invention.

As shown in FIG. 2, the three-axis control satellite antenna redundancy control system for ships according to the present invention is configured by combining the first and second antenna devices 100 and 200 with the communication control device 300.

The first and second antenna devices 100 and 200 may include first and second satellite antennas 110 and 210 and first and second transmission and reception means 120 and 220 coupled to the first and second satellite antennas 110 and 210, respectively. It is configured to include.

In this case, the first and second satellite antennas 110 and 210 may be configured as three-axis control satellite antennas. In addition, the first satellite antenna 110 and the second satellite antenna 210 is preferably installed symmetrically to each other so as to have a different shaded area for the communication satellite 1 as shown in FIG. Do.

In addition, as illustrated in FIG. 2, the first transmitting and receiving unit 120 includes a first diplexer 121, a first high power amplifier (first HPA, 122), and a first low noise amplifier (first LNA, 123). The second transceiver 220 includes a second diplexer 221, a second high power amplifier (2 HPA, 222) and a second low noise amplifier (2 LNA, 223). It is configured to include. Here, the first and second diplexers 121 and 221 are coupled to the first and second satellite antennas 110 and 210, respectively, to receive the received signals from the first and second satellite antennas 110 and 210, respectively. 2 The low noise amplifiers 123 and 223 are transmitted, and the transmission signals applied from the first and second high power amplifiers 122 and 222 are transmitted to the communication satellites through the first and second satellite antennas 110 and 210. In addition, the first and second high power amplifiers 122 and 222 amplify and output a transmission signal applied from the communication control device 300, and the first and second low noise amplifiers 123 and 223 are used in the first and second dies. The noise components of the received signals applied from the flexors 121 and 221 are removed, amplified, and output. In this case, the first and second high power amplifiers 122 and 222 may be dually configured.

In addition, the communication control device 300 stores the shadow area information for the first antenna device 100 and the second antenna device 200 in advance, and the first antenna device 100 currently operating When the beacon signal level of the first antenna device 100 is determined to be located in the shadowed area or less than a predetermined level, the second antenna device 200, which is currently reserved, is transferred to an operating state.

At this time, the communication control device 300 is configured not to transfer the second antenna device 200 to an operating state when the beacon signal level of the second antenna device 200 which is currently in a preliminary state is below a predetermined level.

In addition, the communication control device 300 stops the transfer processing when the first antenna device 100 in the current operation state and the second antenna device 200 in the preliminary state are repeatedly switched for a predetermined number of times for a predetermined time. Force the antenna device in the final operating state at the time of operation to remain in the operating state. For example, when three repetitive transfers occur within 10 minutes while the first antenna device 100 is in an operating state, the second antenna device 200 set to the final operating state after being switched three times is maintained. do.

In addition, the communication control device 300 sets the shadow angle for the first and second antenna apparatus (100,200) as the shadow warning interval, and also set both guard (GUARD) areas of the shadow angle as the shadow attention interval, If it is determined that the shadow warning interval and the shadow warning interval, it is configured to sound or display the alarm information.

FIG. 4 is a block diagram showing functional separation of the internal configuration of the communication control device 300 shown in FIG.

As shown in FIG. 4, the communication control apparatus 300 includes a switching unit 310, a wireless conversion unit 320, a baseband processing unit 330, a communication unit 340, a redundancy control unit 350, and a control panel. And 360.

The switching unit 310 provides a signal received from the first and second low noise amplifiers 123 and 223 of the first and second antenna devices 100 and 200 to the radio conversion unit 320 and a beacon of the received signal. The signal level is checked to provide beacon signal level information of the first and second antenna apparatuses 100 and 200 to the redundancy control means 350 and the control panel 360. In this case, the switching unit 310 is a beacon signal level received from the first beacon signal detection unit 311 and the second low noise amplifier 223 for detecting the beacon signal level received from the first low noise amplifier 123. It comprises a second beacon signal detection unit 312 for detecting the. Here, the switching means 310 provides only the signal received from the satellite antenna that is currently operating to the radio conversion means (320).

The radio conversion means 320 converts the received signal from the switching means 310 into an intermediate frequency signal and provides it to the baseband processing means 330, and also the intermediate applied from the baseband processing means 330. The transmission signal in the form of frequency is converted into a radio signal and provided to the first and second high power amplifiers 122 and 222 of the first and second antenna devices 100 and 200, respectively.

The baseband processing means 330 modulates a reception signal of an intermediate frequency type applied from the radio conversion means 320 into a reception signal of a type suitable for a corresponding communication system and provides the signal to the communication panel 340. The demodulated transmission signal provided from 340 is provided to the radio conversion means 320.

The communication panel 340 is configured to include various output means and input means to output a received signal applied from the baseband processing means 330 and to output a signal corresponding to information input by the user to the baseband. It is provided to the processing means (330). In addition, the communication panel 340 provides various information related to the redundancy from the control panel 360 through an output means, and the shade zone of the first or second antenna apparatus 100 or 200 applied from the control panel 360. Alarm information is output through a speaker (not shown) or displayed on a monitor (not shown) based on the warning information. In addition, the communication panel 340 is configured to output an alarm based on the beacon reception level information of the first or second antenna device (100, 200) applied from the control panel 360.

The redundancy control means 350 controls to selectively drive the transmission / reception satellite antenna based on the shadow area information and the beacon signal level corresponding to the current position of the ship. That is, the redundancy control means 350 stores the shadow area information for each of the first and second satellite antennas 110 and 210 in a table form in advance, and the first antenna device 100 currently operating is located in the shadow area. When it is determined that the beacon signal level of the first antenna device 100 is less than a predetermined level, the second antenna device 20, which is currently reserved, is switched to an operating state. At this time, the shadow zone setting information is composed of a shadow warning interval (A), a shadow attention interval (B) for each satellite antenna, as shown in Figure 5, the shadow warning interval (A) is a satellite antenna to the ship In the installed state, it is the shade angle area between the ship and the satellite, which is measured in advance by the user in consideration of the minimum rotation radius, the maximum speed, and the transfer time of the vessel, and the shade warning section (B) is the guard of the shadow warning section (A). GUARD) area.

In addition, the redundancy control means 350 performs redundancy switching control for the first and second antenna apparatuses 100 and 200 based on the redundancy switching priority set by the user. 5 illustrates the redundancy switching priority of the redundancy control means 350.

That is, as shown in Fig. 6, the Clear request is set to the highest priority, followed by the Lockout of Protection (LP) request, the Status Fault for Protection (SF-P) request, the spare section shadow angle warning, and the Status Fault (SF). The request, shadow angle warning, Manual Switch (MS) request, and No Request (NR) request are prioritized sequentially.

1.Clear request

The Clear command is the top level command of all switch requests and clears all commands. At this time, the high power amplifier in the operating state is set to RF ON, and the high power amplifier in the preliminary state is set to the RF OFF state.

2.Lockout of Protection (LP) request

The Lockout of Protection (LP) request prevents the switching of the current operating satellite to a spare satellite. Lockout of Protection (LP) requests take precedence over external transfer request commands. For example, when the antenna operation mode is selected as the manual tracking mode, the maintenance mode, the pause, the motor driver stop, or the antenna stop, it is generated to prevent the current operating satellite antenna from being controlled by the spare satellite antenna.

In addition, the lockout of protection (LP) request is also generated to limit the repetition of the transfer operation when the ship repeatedly proceeds to the shadowed area. That is, when the first antenna device in the operating state and the second antenna device in the preliminary state are repeatedly switched for a predetermined number of times for a predetermined time, a lockout of protection (LP) request is generated to stop the transfer process and the final operation state is changed. Force the antenna device to the operating state. After the Lockout of Protection (LP) request is executed, the operation mode is No Request (NR) due to the Clear request, which is a higher priority.

3.Status Fault for Protection (SF-P) request and spare section shadow angle warning

The Status Fault for Protection (SF-P) request and the preliminary state shadow angle warning prohibit the transfer to the preliminary satellite antenna due to the fail state of the preliminary satellite antenna. For example, when a failure occurs in a reception beacon signal of a satellite antenna currently in a preliminary state or a shadow section warning of a satellite antenna in a preliminary state, a Status Fault for Protection (SF-P) request is generated.

4.Status Fault (SF) request and shadow angle warning

When a failure occurs in the reception beacon signal of the operating satellite antenna and the antenna device currently operating in the shaded angle warning section, the operating satellite antenna is transferred to the spare satellite antenna. In this case, the fail determination reference level of the beacon signal may be set to, for example, -105 ± 0.2 dBm or less.

5.Manual Switch (MS) Request

 Manual Switch (MS) request transfers the operating satellite antenna to the spare satellite antenna by external command. At this time, if a higher priority transfer request already exists, the transfer is not performed.

6.No Request (NR) Request

No Request (NR) requests are normal with no automatic or manual transfer requests.

Subsequently, the satellite antenna duplication control method of the ship 3-axis control satellite antenna duplication control system having the above-described configuration will be described with reference to the operation flowchart shown in FIG.

First, as shown in FIG. 5, the respective shaded zones for the first and second antenna devices 100 and 200 are set in a state in which the first and second antenna devices 100 and 200 are arranged to be symmetrical on the ship's bridge. (ST1). In this case, the shaded area is set to include the shade angles for the first and second satellite antennas 110 and 210 provided in the corresponding first and second antenna devices 100 and 200, the minimum rotation radius, the maximum speed, and the transfer time of the ship. The shadow warning interval and the shadow warning interval of both guard areas of the shadow warning interval.
In the above state, the first and second antenna devices 100 and 200 are arbitrarily set as the operating satellite antenna and the spare satellite antenna. In the present embodiment, it is assumed that the first antenna device 100 is initially set to the operating state and the second antenna device 200 is set to the reserve state.

In this case, the communication device 300 receives a signal through the first antenna device 100 and the second antenna device 200 and transmits a signal through the first antenna device 100 which is currently operating. Processing is performed (ST2).

That is, the reception signals applied from the first antenna device 100 and the second antenna device 200 are applied to the switching means 310 of the communication device 300, and the switching means 310 are the first and second antennas. The beacon signal level applied from the device 200 is provided to the redundancy control means 350 and the control panel 360, and the received signal applied from the first antenna device 100 is provided to the radio conversion means 320. At this time, the wireless conversion means 320 converts the received signal from the switching means 310 to the intermediate frequency and provides it to the communication panel 340 through the baseband processing means 330.

In addition, the transmission signal applied from the communication panel 340 is applied to the radio conversion means 320 through the baseband processing means 330 and converted into a radio signal, and then the first and second antenna devices 100 and 200 of the first and second antenna apparatuses 100 and 200. And second high power amplifiers 122 and 222, respectively. In this case, the control panel 360 sets only the first high power amplifier 122 to an operating state so that the transmission signal is transmitted to the communication satellite 1 through the first antenna device 100.

In the above state, the redundancy control means 350 monitors whether or not the shadow area of the first antenna device 100 based on the current position information of the ship applied from the gyro sensor J and the GPS G (ST3). In addition, the beacon signal levels of the first and second antenna devices 100 and 200 provided from the switching unit 310 are checked to direct the first satellite antenna of the first antenna device 100 to the satellite (ST4). At this time, the shadow zone monitoring information and the beacon signal level information is provided to the control panel 360, the control panel 360 when the first antenna device 100 enters the shadow zone and is located in the shadow warning section or shadow warning section. Information about this is provided to the communication panel 340 to output an alarm.

In addition, the redundancy control means 350 performs antenna switching control by generating a priority request based on previously stored shadow area information and beacon signal level when the first antenna device 100 which is currently operating enters the shadow area. (ST5).

That is, the duplication control means 350 transfer control of the antenna device so as to correspond to a preset transfer priority as shown in FIG. For example, the redundancy control means 350 controls the second antenna device 200 not to be switched to an operating state when the beacon signal level of the second antenna device 200 which is currently in a preliminary state is lower than or equal to a predetermined level. When the first antenna device 100 and the second antenna device 200 in the preliminary state are repeatedly switched for a predetermined number of times for a predetermined time, the switching process is stopped and the antenna device finally transferred to the operating state is forcibly set to the operating state. .
On the other hand, the redundancy control means 350 performs the above-described operation, such as performing a series of communication processing for transmitting a signal through the antenna device which is currently operating, and performing a redundancy switching process. At this time, the current state of the first and second antenna apparatus (100,200) is not fixed to the initial setting state is changed every time the transfer.

Therefore, according to the embodiment, when the operating satellite antenna is located in the shadowed area and the beacon signal level of the operating satellite antenna is determined to be below a predetermined level, the spare satellite antenna is transferred to the operating satellite antenna.

In addition, according to the present invention by eliminating the shadow area of the satellite antenna installed on the ship to stabilize the communication link, it is possible to provide a more smooth communication environment.

100, 200: antenna device, 300: communication control device,
110, 210: satellite antenna, 120, 220: transmission and reception means,
310: switching means, 320: wireless conversion means,
330: baseband processing means, 340: communication panel,
350: redundant control means, 360: control panel.

Claims (4)

In the ship's satellite antenna redundancy control system, wherein the first and second antenna devices installed symmetrically on the bridge of the ship are combined with the communication control device,
A first step of setting a shadow area for each of the first and second antenna devices in the communication control device;
A second step of receiving and processing a signal provided through a first antenna device in a current operation state in the communication control device and performing signal transmission processing through the first antenna device;
A third step of monitoring, by the communication control device, whether a shadow area is provided for the first and second antenna devices based on the current position of the ship;
A fourth step of confirming a beacon signal level of signals applied from the first and second antenna apparatuses in the communication control apparatus;
The beacon signal level is below the predetermined level while the first antenna device currently operating is based on the shadow zone monitoring information and the beacon signal level information applied from the third and fourth steps in the communication control device. When the second antenna device currently in the preliminary state is located in the non-shading area, the three-axis control satellite antenna redundancy control for ships, characterized in that it comprises a fifth step of switching the current second antenna device to the operating state Way. The method of claim 1,
In the fifth step, the three-axis control satellite for ships is controlled so as not to transfer the second antenna device to an operating state when the beacon signal level of the second antenna device, which is currently reserved by the communication control device, is lower than or equal to a predetermined level. Antenna redundancy control method. The method according to claim 1 or 2,
In the fifth step, when the first antenna device currently operating in the communication control device and the second antenna device currently in the standby state are repeatedly switched for a predetermined number of times for a predetermined time, the transfer processing is stopped and finally operated when the switching is stopped. A three-axis control satellite antenna redundancy control method for a ship, characterized in that forcibly setting the antenna device in the operating state. The method of claim 1,
In the first step, the shadow area for the first and second antenna devices includes a shadow warning section including a shadow angle calculated on the basis of the minimum rotation radius, the maximum speed, and the transfer time of the ship, and the amount of the shadow warning section. A three-axis control satellite antenna redundancy control method for a ship, characterized in that the guard zone is set to the shadow attention zone.

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