KR101218714B1 - Dual change method for satellite antenna of ship in dual control system - Google Patents

Abstract

PURPOSE: A duplex switchover method in a satellite duplex control system for ships switching is provided to eliminate a shadow zone of a satellite antenna installed in a ship, thereby providing a smooth communication environment. CONSTITUTION: Duplex switchover priority information is predetermined and is stored in a communications controller(ST1). With first and second antenna devices in an NR state with a sixth ranking, the communications device receives a signal through the first and the second antenna devices and performs a series of communications processes for transmitting the signal through the first antenna device(ST2). A control board updates priority for the satellite antennas in real time in order to correspond to a current state (ST3). Duplex control means switches a backup satellite antennas over an operational satellite antenna based on priority which is predetermined according to the control of the control board(ST4). [Reference numerals] (ST1) Setting dualization switchover priority; (ST2) Transmitting a signal to a communication satellite(1) through a driving satellite antenna and receiving the signal from the communication satellite through the driving satellite antenna; (ST3) Updating priority for a satellite antenna in order to correspond to a current condition; (ST4) Switching a current antenna over a pre-satellite based on priority

Description

Dual change method for satellite antenna of ship in dual control system

The present invention relates to a redundancy switching method in a ship satellite antenna redundancy control system for switching satellite antennas on the basis of priority to solve the shadow area of the satellite antenna installed on the ship to provide a more smooth communication environment.

Currently, ships are equipped with a wireless communication system through satellites for transmitting and receiving information necessary for navigation, especially voice and data signals, to help the safe operation of the ship.

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.

At this time, the satellite antenna should be able to maintain a communication link and communication link at all times during the operation of the ship.

However, as shown in FIG. 1, the satellite antenna 3 installed on the bridge 2 of the ship is provided by another structure of a predetermined size, such as a master 4, installed on the bridge 2, for example. During operation, a shaded area may be generated in the communication link with the communication satellite (1).

That is, when the satellite antenna 3 is located in the communication shadow zone at the moment when the vessel transmits and receives information through the communication satellite 1, the transmission and reception of information between the vessel and the outside occurs.

Accordingly, there may be a method of configuring a ship so that the satellite antenna is duplicated in the ship and the satellite antenna is switched in the shaded area to maintain a communication link between the communication satellite and the satellite antenna.

In the transfer of the redundant satellite antenna, a redundant switching method that can be suitably applied according to a communication environment is required.

Accordingly, the present invention has been made in view of the above circumstances, and in ship satellite antenna redundancy control system configured by duplexing satellite antennas having different shade angles, the priority is based on the shade angle in consideration of the communication environment. It is a technical object of the present invention to provide a redundant switching method for stably maintaining a communication link by transferring redundant first and second satellite antennas in a timely manner.

In the ship satellite antenna redundancy control system according to the present invention for achieving the above object, the redundancy switching method is provided with a first and a second antenna device having a different shaded area for the communication satellite, the first and second antenna devices A ship satellite antenna redundancy control system comprising a communication control device for switching an operating state of an antenna device, comprising: a first step of setting a transfer priority, and a first and a second according to the priority in the communication control device; And a second step of switching the second antenna device, wherein the first step sets a CLEAR request for releasing all the switching-related requests to a first priority and operates the antenna device currently in a preliminary state. Set the LP request to the second order, which prevents the switchover to the second priority. In one case, the SF-P request and the preliminary shadow angle warning request that prevent the transfer of the antenna device, which is currently reserved, to the operating state, are set to the third priority, and the antenna device, which is currently operating, is in a Fault state. Set the SF request for switching the antenna device in the preliminary state to the operating state and the warning request for the shadow angle in the operating state to the fourth priority. It is set to the fifth rank, and the normal state without the transfer request (Normal) is characterized in that it is set to the sixth rank.

In addition, in the second step, the communication control apparatus may release the previously set priority for the clear request which is the first rank and set the sixth rank to the normal state.

In addition, in the second step, the communication control device may be repeatedly switched a predetermined number of times during a predetermined time between the antenna device currently operating and the antenna device currently in a standby state, or the antenna operation mode may be a manual tracking mode, a maintenance mode, a pause, or a motor driver. In the case of at least one of the stop state and the antenna stop state, the LP request, which is the second rank, is set for the antenna device currently in the preliminary state.

Further, in the second step, the communication control device requests SF, which is the fourth priority, for the antenna device currently operating due to a fault in the redundant control system while the LP request is performed for the antenna device that is currently reserved. Is generated, the RF outputs of the first and second antenna devices are required to be turned off.

Further, in the second step, the communication control device is the antenna device in the current operation state when the SF request, which is the fourth rank, for the antenna device in the current operation state is automatically released while the LP request is performed for the antenna device in the current state. It is characterized by requiring to turn on the RF output of (ON).

Further, in the second step, the communication control apparatus may set the SF request and the operating state shadow angle warning request, which are the fourth ranks, when a fault occurs in the signal reception path and the transmission path of the antenna device which are currently operating. It features.

According to the present invention, the dual satellite antennas installed on the ship are switched to each other based on the priorities based on the shadow angle to solve the shadow area of the satellite antenna, so that the user can improve the communication quality of the call anytime and anywhere even during the operation of the ship. It will be provided with safe ship operation.

1 is a view schematically showing a configuration of a general marine wireless communication system.
Figure 2 is a diagram showing a schematic configuration of a ship satellite antenna redundancy control system to which the present invention is applied.
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 a shadow area of the redundancy control device 350 shown in FIG.
6 shows satellite antenna transfer priorities in accordance with the present invention;
FIG. 7 is a flowchart for describing a redundant switching method according to the switching priority shown in FIG. 6.

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.

In addition, in the present exemplary embodiment, the antenna device operated in the present operating state is arbitrarily set as the first antenna device and the antenna device currently operated in the reserve state as the second antenna device. That is, the first antenna device and the second antenna device may be set to an operating state or a reserve state according to the current state.

2 is a diagram showing a schematic configuration of a satellite antenna redundancy control system to which the present invention is applied.

As shown in FIG. 2, in the satellite antenna redundancy control system to which the present invention is applied, the first and second antenna devices 100 and 200 are combined 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 are preferably positioned symmetrically to each other so as to have a different shaded area for the communication satellite (1) as shown in FIG. .

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 (first HPA, 222), and a second low noise amplifier (second LNA, 223). It is configured to include. Here, the first and second diplexers 121 are coupled to the first and second satellite antennas 110 and 210, respectively, and receive signals received 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 satellite 1 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 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, the first antenna device 100 is set to an operating state When the beacon signal level of the first antenna device 100 is determined to be in a shadowed area or less than a predetermined level, the second antenna device 200 which is set to a reserve state based on the switching priority according to the present invention is transferred to an operating state. Or the control to maintain the operating state of the first antenna device 100.

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. The processing means 330 is provided. In addition, the communication panel 340 provides various information related to redundancy from the control panel 360 through an output means, and a shaded area 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 caution / warning information.

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 200, which is currently reserved, is switched to an operating state. At this time, the redundancy control means 350 provides the shadow area information and the beacon signal level to the control panel 360, and transfers the satellite antenna according to the transfer request applied from the control panel 360. Also, as shown in FIG. 5, the shadow area setting information includes a shadow warning section A and a shadow warning section B for each satellite antenna. The shade warning section (A) is a shade angle area between the ship and the satellite measured in advance by the user in consideration of the minimum rotation radius, the maximum speed, and the transfer time of the ship while the satellite antenna is installed on the vessel, B) is a GUARD region of the shadow warning section (A).

In addition, the control panel 360 controls the overall operation of the ship's satellite antenna redundancy control system. In particular, the control panel 360 updates the priority information of the ship antenna antenna redundancy switching in real time to correspond to the current communication environment, and controls to switch the satellite antenna according to the updated priority.

6 is a view showing the priority of the antenna antenna redundancy transfer according to the present invention.

That is, the communication control device 300 shown in FIG. 2 transfers or maintains an operating state with respect to the first and second satellite antennas 110 and 210 based on the switching priority set as shown in FIG.

 As shown in FIG. 6, the satellite antenna transfer priority is as follows: Clear request is first priority, LP (Lockout of Protection) priority is second priority, Status Fault for Protection (SF-P) request, and preliminary state shadow angle. The alert is set to the third rank, the SF (Status Fault) request and the operation state shadow angle alert to the fourth rank, the MS (Manual Switch) request to the fifth rank, and the NR (No Request) request to the sixth rank.

1.First rank (clear request)

The clear request is the highest order of the satellite antenna switch requests and releases all switch related requests. At this time, the first high power amplifier 122 coupled to the first satellite antenna 110 in the current operation state is set to RF ON, and the second high power amplifier 222 coupled to the second satellite antenna 210 in the preliminary state. ) Is set to the RF OFF state.

For example, when the LP request, which is the second rank, is being performed on the second satellite antenna 210 that is currently reserved, the LP request may be released by performing the clear request, which is the first rank. At this time, the second satellite antenna 210, which is in the preliminary state, is in the NR state, which is the sixth rank.

In addition, when the MS request, which is the fifth rank, is being performed to the first satellite antenna 110 that is currently operating, the MS state may be released by performing the clear request, which is the first rank. At this time, the first satellite antenna 110, which is currently operating, is in the NR state, which is the sixth rank.

2nd rank (LP required)

The LP request prevents the first satellite antenna 110, which is currently operating, from being transferred to the reserve state. LP requests take precedence over external transfer requests. For example, when the antenna operation mode is selected as the manual tracking mode, the maintenance mode, the pause, or the antenna stop, the LP command is applied to prevent the first satellite antenna 110, which is currently operating, from being cut off to the reserve state. Here, the manual tracking mode is an operation mode that allows the operator to track the communication satellite (1) by a manual command input through the operator computer, the maintenance mode is the operator through the operator computer for maintenance of the satellite antenna It is an operation mode to conveniently maintain specific parts by setting the direction of satellite antenna to a predetermined position. In addition, the pause mode is an operation mode for performing the posture maintenance only by waves without automatically tracking the communication satellite in preparation for an unspecified situation of the satellite antenna, and the antenna stop mode is an operation mode for stopping the operation of the satellite antenna. .

In addition, the LP request is also generated to limit the repetition of the transfer operation when the ship proceeds repeatedly through the shadow area. That is, when the first satellite antenna 110 currently in operation and the second satellite antenna 210 in the preliminary state are repeatedly switched for a predetermined number of times for a predetermined time, an LP request is generated to stop the transfer process, and when the transfer is terminated, The antenna device in the operating state is forced to the operating state. After the LP request is performed, the first and second satellite antennas 110 and 210 are placed in the NR state of the sixth order by the clear request which is the higher priority.

In addition, the SF and operating state shadow angle warning request, which is the fourth rank, is applied to the first satellite antenna 110 that is currently operating while the LP request, which is the second rank, is performed to the second satellite antenna 210 that is currently reserved. If this occurs, the second satellite antenna 210, which is currently reserved, is not switched to the operating state, and the second high power amplifier 222 coupled to the second satellite antenna 210 is turned off. That is, the satellite antenna is not transferred and maintains its current state.

At this time, if the SF request and the shadow angle warning state, which is the fourth rank, with respect to the redundant control means 350 and the first and second antenna apparatuses 100 and 200 or if no fault occurs in the received RF path, the first And the second antenna apparatus 100 and 200 maintain the automatic tracking mode. Here, the automatic tracking mode is an operation mode that receives the current position information from the GPS and gyro sensor and automatically adjusts the direction of the satellite antenna toward the communication satellite 1.

In addition, a second satellite currently in a standby state in a state in which SF and operating state shadow angle warnings, which are fourth ranks, are generated due to fault conditions of the redundant control means 350 and the first and second antenna apparatuses 100 and 200. When the LP request, which is the second rank, is performed to the antenna 210, the control panel 360 turns off both RF outputs of the first and second antenna apparatuses 100 and 200. That is, the first and second antenna devices 100 and 200 are operated in the stabilization mode. Here, the stabilization mode is an operation mode for maintaining the direction of the satellite antenna in the current state.

In addition, when the LP request, which is the second rank, is performed to the second satellite antenna 210 which is currently in the preliminary state, when the SF and the operating state shadow angle warning state are generated in the transfer means 310, the control panel 360 is configured to perform the second request. Set the first and second high power amplifiers 122, 222 to RF OFF. In this case, the first and second antenna devices 100 and 200 maintain the stabilization mode.

In addition, a fifth priority for manual switching of the satellite antenna to the first satellite antenna 110, which is currently operating by an external command, while the LP request, which is the second rank, is performed on the second satellite antenna 210, which is currently reserved. Even if the MS request, which is a rank, occurs, the redundancy control means 350 does not perform satellite antenna switching.

In addition, in the state where the LP request, which is the second rank, is performed on the second satellite antenna 210 which is in the preliminary state, and the SF and operating state shadow angle warnings are generated on the first satellite antenna 110 which is in the current operation state, When the clear request, which is the first rank, is generated in the second satellite antenna 210 which is currently reserved by the command, the second satellite antenna 210 is transferred to the operating state.

In addition, in the state in which the first satellite antenna 110, which is currently operating, has a SF request, which is a fourth rank, and an operating state shadow angle warning state, and an LP request, which is a second rank, is generated in the second satellite antenna 210, which is currently reserved. When the SF and operating state shadow angle warnings are automatically released for the first satellite antenna 110, the LP state for the second satellite antenna 210 is maintained. At this time, when the clear request is performed to the second satellite antenna 210 in the preliminary state, the second satellite antenna 210 is in the NR state of the sixth rank.

In addition, in the state in which the LP request, which is the second rank, is performed to the second satellite antenna 210 which is currently reserved, the transfer operation is not performed even if the first satellite antenna 110 which is currently operating enters the shadow angle warning section. Do not. At this time, the high output amplifiers of the first and second antenna devices 100 and 200 are both turned off and are automatically set to the stabilization mode. And now If the beacon signal cannot be received through the first satellite antenna 110 in operation or if the reception level is lower than a predetermined level and a fault occurs in the beacon signal reception, the fourth satellite is ranked fourth with respect to the first satellite antenna 110. SF and the operating state shadow angle warning request is generated, and when the shadow angle warning section for the first satellite antenna 110 is released, the first high power amplifier 122 coupled with the first satellite antenna 110 is RF. In the ON state, the first and second antenna apparatuses 100 and 200 are switched to the automatic tracking mode.

In addition, when the second satellite antenna 210 enters the shadow angle warning section in a state in which the LP request, which is the second rank, is performed to the second satellite antenna 210 which is currently reserved, the second satellite antenna 210 is located. The second high power amplifier 222 coupled to the RF OFF state is maintained. At this time, the first and second antenna apparatus (100,200) is in the automatic tracking mode. The second high power amplifier 222 maintains the RF OFF state even when the second satellite antenna 210 deviates from the shadow angle warning section.

3rd rank (SF-P requirement and preliminary shadow angle warning)

The SF-P request and the preliminary state shadow angle warning prohibit the transfer of the preliminary state of the second satellite antenna 210 to the operating state due to a fault state of the preliminary state of the second satellite antenna 210. Demand. That is, the SF-P request and the preliminary state shadow angle warning request are generated when the second satellite antenna 210, which is currently in the preliminary state, is faulted or the second satellite antenna 210 enters the shaded section.

In addition, in a state in which the SF-P request, which is the third rank, is performed on the second satellite antenna 210 that is currently reserved, the MS request, which is the fifth rank, is applied to the first satellite antenna 110, which is currently operating by an external command. Does not change even if it occurs or is in the state of SF and shadow angle warning.

In addition, in a state in which the SF-P request, which is the third rank, is performed on the second satellite antenna 210 that is currently reserved, the current state is updated when the clear request, which is the first rank, is performed, and the second satellite antenna 210 is updated. And the second high power amplifier 222 is maintained in the RF OFF state.

In addition, in a state in which the SF-P request, which is the third rank, is performed on the second satellite antenna 210, which is currently reserved, the second satellite antenna 210 is updated to the LP state when the LP request, which is the second rank, is generated. . At this time, the second high power amplifier 222 coupled to the second satellite antenna 210 is maintained in the RF OFF state.

4. 4th rank (SF request and operating state shadow angle warning)

When a fault occurs in the signal reception path and the transmission path of the first satellite antenna 110 in the current operation state, or when the first antenna device 100 in the current operation state enters the shadow angle warning section. The satellite antenna 110 is transferred to the reserve state, and the second satellite antenna 210, which is currently reserved, is transferred to the operating state.

For example, when the SF request and the operating state shadow angle warning, which are the fourth ranks, are generated in the first operating satellite antenna 110 currently operating, the control panel 360 may include a first high power amplifier coupled to the first satellite antenna 110. Reference numeral 122 is set to RF OFF and the RF path is switched to the second satellite antenna 210. At this time, if the redundant control means 350 or the first and second antenna devices 100 and 200 are in an SF state or the receiving RF path is not in a fault state, the first and second antenna devices 100 and 200 are in the automatic tracking mode. Keep it. On the other hand, if the redundancy control means 350 is in the SF state in the above state, the first and second high power amplifiers 122 and 222 are RF-off to switch the first and second antenna devices 100 and 200 to the stabilization mode.

In addition, GPS and gyro sensor errors provided in the first and second antenna devices 100 and 200 generate SF requests, in which case the first and second high power amplifiers 122 and 222 of the first and second antenna devices 100 and 200 are used. Are all in RF OFF state.

5.The fifth rank (MS request)

 The MS request converts the currently operating satellite antenna to the standby state by an external command. At this time, if a higher priority transfer request already exists, the transfer is not performed.

6. The sixth rank (NR request)

The NR request is normal with no automatic or manual switching requirements.

Next, the satellite antenna redundancy switching process according to the priority in the satellite antenna redundancy control system having the above configuration will be described with reference to the 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 symmetric with each other on the ship's bridge. do. In this case, the shaded area includes a shade angle for the first and second satellite antennas 110 and 120 provided in the corresponding first and second antenna devices 100 and 200, a minimum rotation radius, a maximum speed, and a transfer time of the ship. Warning section, the shadow warning section is set to the shadow warning section of both guard areas.

In addition, the redundant switching priority information as shown in FIG. 6 is set in advance and stored in the communication control device 300 (ST1). That is, the priority of satellite antenna transfer is that the clear request is ranked first, the lockout of protection request is ranked second, the status fault for protection (SF-P) request, and the preliminary state shadow angle warning is ranked third. The SF (Status Fault) request and the operation state shadow angle warning are set to the fourth rank, the MS (Manual Switch) request to the fifth rank, and the NR (No Request) request to the sixth rank.

In the above state, the operating satellite antenna and the spare satellite antenna are set. In this embodiment, initially, the operating satellite antenna is arbitrarily set as the first antenna device 100 and the spare satellite antenna as the second antenna device 200. In this case, the first and second antenna apparatuses 100 and 200 are operated in the automatic tracking mode, and their priority is set to the NR state, which is the sixth rank in which the transfer request is not performed.

In the NR state in which the first and second antenna devices 100 and 200 are in the sixth order, the communication device 300 receives a signal through the first antenna device 100 and the second antenna device 200, and also receives the first signal. A series of communication processes for transmitting a signal through the antenna device 100 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 apparatuses 100 and 200 is provided to the redundancy control means 350 and the control panel 360, and the received signal applied from the first antenna apparatus 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 123, respectively. At this time, the control panel 360 sets only the first high power amplifier 122 in an operating state, and the transmission signal is transmitted to the communication satellite 1 through the first antenna device 100.

In the above state, the control panel 360 updates the priority for the satellite antenna in real time to correspond to the current state (ST3).

That is, the redundancy control means 350 monitors whether the first antenna device 100 is in the shaded area based on the current position information of the ship applied from the gyro sensor J and the GPS G, and the switching means ( The beacon signal levels of the first and second antenna devices 100 and 200 provided from 310 are checked to direct the first satellite antenna of the first antenna device 100 to the satellites. 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 updates the priority for the first and second antenna apparatus (100, 200) based on this.

For example, the control panel 360 operates the second antenna device 200 when the first antenna device 100 enters the shadow area and is located in the shadow warning section or the shadow warning section (third or fourth priority). Control to switch to At this time, if the priority of the second priority for prohibiting the transfer to the preliminary satellite antenna is set for the second antenna device 200, the transfer request is not made to the redundant control means 350.

In addition, the control panel 360 generates an LP request (second priority) when the first satellite antenna 110 in the operating state and the second satellite antenna 210 in the preliminary state are repeatedly switched for a predetermined time. In addition to stopping the control, control is made to forcibly set the antenna device which is in the final operating state to the operating state when the transfer is completed. After the LP request is performed, the first and second satellite antennas 110 and 210 are in a normal state (the sixth priority) by a clear request (first priority) which is a higher priority.

That is, the redundancy control means 350 transfers the spare satellite antenna to the operating satellite antenna based on the preset transfer priority as shown in FIG. 5 under the control of the control panel 360 (ST4).

Therefore, according to the above embodiment, the operating satellite antenna and the preliminary satellite antenna, which are mainly operated during the operation of the ship, are set in advance, and the operating satellite antenna is positioned in the shadow area, and the beacon signal level of the operating satellite antenna is determined to be below a predetermined level. If necessary, the preliminary satellite antenna is transferred to the operating satellite antenna according to the priority set in consideration of the current state of the redundant control system.

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 (6)

The first and second antenna devices having different shaded areas for the communication satellites are installed on the ship, and the ship satellite antenna redundancy including a communication control device for switching the operating state of the first and second antenna devices In the control system,
The first step of setting the transfer priority,
And a second step of switching the first and second antenna apparatuses according to the priority in the communication control apparatus.
The first step sets the CLEAR request for releasing all the transfer-related requests to the first priority, and sets the LP request to prevent the transfer of the currently reserved antenna device to the operating state to the second priority. Set the SF-P request and the preliminary shadow angle warning request to prevent the transfer of the preliminary antenna device to the operating state when the antenna device in the reserve state is faulty or approaching the shaded area. If the antenna device in the current operating state is in a fault state, the SF request and operating state shadow angle warning request for switching the antenna device in the preliminary state to the operating state are set as the fourth priority. To set the MS requirement for manually switching the antenna device, which is currently reserved, to the operating state, to the fifth rank, and to set the normal state without the transfer request to the sixth rank. Redundancy switching method in the ship's satellite antenna redundancy control system, characterized in that. The method of claim 1,
In the second step, the communication control apparatus is configured to release the prior priority set for the clear request which is the first rank and set it to the sixth rank which is normal. How to transfer. The method of claim 1,
In the second step, the communication control device is configured to repeatedly switch the antenna device currently operating and the antenna device currently reserved for a predetermined number of times for a predetermined time, or the antenna operation mode is at least one of the manual tracking mode, maintenance mode, pause, and antenna stop. The redundant switching method in the ship satellite antenna redundancy control system, characterized in that if the one state is set to the second priority LP request for the antenna device in the current state. The method of claim 1,
In the second step, the communication control device generates a fourth priority SF request for the antenna device that is currently operating due to a fault in the redundant control system while the LP request is performed for the antenna device that is currently reserved. And the RF outputs of the first and second antenna devices are turned off when the redundancy switching method is used in the ship satellite antenna redundancy control system. 5. The method of claim 4,
In the second step, when the LP request is performed for the antenna device currently in the preliminary state, if the SF request, which is the fourth rank, is automatically released for the antenna device currently in the active state, the RF of the antenna device currently in the operating state is Redundancy switching method in a ship satellite antenna redundancy control system characterized in that the output is required to be ON. The method of claim 1,
In the second step, the communication control apparatus sets the SF request and the operating state shadow angle warning request, which are the fourth ranks, when a fault occurs in the signal reception path and the transmission path of the antenna device which is currently operating. Redundancy transfer method in ship satellite antenna redundancy control system.

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