Patent Description:
The present application claims priority based on <CIT>.

When a disaster such as fire or flooding occurs on a ship, a crew member appropriately controls a safety device installed on the ship to respond to the disaster. For example, PTL <NUM> discloses a flood notification system that notifies crew members of information for appropriately performing initial response and evacuation to flooding when flooding occurs on a ship. When a disaster occurs, there is a possibility that there will be a shortage of crew members due to the need to respond to the disaster and guide passengers to evacuate. Depending on a situation on the ship, actions of the crew members may be restricted and sufficient disaster response may not be possible.

There is a concern that a disaster response may be inadequate when only crew members on a ship respond to the disaster.

The present disclosure provides a safety system, a land system, an on-ship system, and a control method capable of solving the above problems.

According to an aspect of the present disclosure, a safety system includes: an on-ship system that is provided on a ship; and a land system that is provided on land, in which the on-ship system includes a safety detection device and a safety maintenance device that are provided on the ship, a first acquisition unit that acquires information detected by the safety detection device and information indicating a state of the safety maintenance device, a first control unit that controls the safety maintenance device, and a communication unit that communicates with the land system, and the land system includes a second acquisition unit that acquires the information detected by the safety detection device and the information indicating the state of the safety maintenance device through the communication unit, and a second control unit that outputs a control signal for controlling the safety maintenance device to the safety maintenance device through the communication unit.

According to another aspect of the present disclosure, a land system includes: a communication unit that communicates with a safety detection device and a safety maintenance device, which are provided on a ship, through a communication device provided on the ship; an acquisition unit that acquires information detected by the safety detection device and information indicating a state of the safety maintenance device through the communication unit; and a control unit that outputs a control signal for controlling the safety maintenance device to the safety maintenance device through the communication unit.

According to still another aspect of the present disclosure, an on-ship system includes: a safety detection device and a safety maintenance device that are provided on a ship; an acquisition unit that acquires information detected by the safety detection device and information indicating a state of the safety maintenance device; a control unit that controls the safety maintenance device; and a communication unit that transmits the information detected by the safety detection device and the information indicating the state of the safety maintenance device to a land system and receives a control signal for controlling the safety maintenance device from the land system.

According to still another aspect of the present disclosure, a control method of a safety maintenance device provided on a ship, the control method includes: a step of acquiring, by an on-ship system provided on the ship, information detected by a safety detection device provided on the ship and information indicating a state of the safety maintenance device; a step of transmitting, by the on-ship system, the information acquired in the step of acquiring to a land system provided on land; a step of acquiring, by the land system, the information transmitted in the step of transmitting; and a step of transmitting, by the land system, a control signal for controlling the safety maintenance device to the safety maintenance device.

According to the safety system, the land system, the on-ship system, and the control method described above, monitoring related to ship safety and control of a safety device, which can generally only be performed on a ship, can be performed on land as well as on a ship.

Hereinafter, a safety system of the present disclosure will be described with reference to <FIG>.

<FIG> is a diagram showing an example of a safety system according to an embodiment.

The safety system <NUM> includes an on-ship system <NUM> mounted on each of one or a plurality of ships <NUM> and a land system <NUM> provided in a monitoring station on land. The land system <NUM> and the on-ship system <NUM> of each ship <NUM> are connected to each other via a network in a communicable manner. The on-ship system <NUM> is a system that monitors and controls a safety device in the ship <NUM>. In general, the ship <NUM> is provided with the on-ship system <NUM> for monitoring the safety on the ship or responding to a disaster. The on-ship system <NUM> constantly monitors the ship, and when a disaster such as fire or flooding occurs, the on-ship system <NUM> responds to the disaster by operating the safety device <NUM>. On the other hand, in the safety system <NUM> of the present embodiment, in addition to the on-ship system <NUM>, the land system <NUM> having the same function and configuration as the on-ship system <NUM> is provided on land, and remote monitoring of a plurality of ships <NUM> is also performed from the land system <NUM>. When a disaster occurs on the ship <NUM>, the safety device <NUM> included in the ship <NUM> is remotely controlled to respond to the disaster.

The on-ship system <NUM> is classified into an on-ship system 20a, which includes a safety device <NUM> and a monitoring system 21a monitoring and controlling the safety device <NUM>, and an on-ship system 20b, which includes a safety device <NUM>, a communication device <NUM>, and a monitoring system 21b. In the on-ship system 20a, the monitoring system 21a communicates with the land system <NUM>, and the land system <NUM> monitors and controls the safety device <NUM> through the monitoring system 21a. In the on-ship system 20b, the communication device <NUM> communicates with the land system <NUM>, and the land system <NUM> monitors and controls the safety device <NUM> through the communication device <NUM> without going through the monitoring system 21b. When no particular distinction is required, the on-ship systems 20a and 20b may be referred to as the on-ship system <NUM> and the monitoring systems 21a and 21b may be referred to as the monitoring system <NUM>.

The safety device <NUM> includes sensors for detecting a safety situation on the ship or facility for maintaining the safety on the ship. An example of the safety devices <NUM> is shown in <FIG>. A power type ventilation device of an item number <NUM> is equipment for fire spread prevention. For example, in the event of fire, control is performed such that oxygen is stopped so as not to be supplied to a place where the fire has occurred. The monitoring system <NUM> can monitor an operation state (whether it is being activated or stopped) of the power type ventilation device and can control (activation, stop) the operation of the power type ventilation device. A fire prevention door of an item number <NUM> is also a device for preventing the spread of the fire, and the monitoring system <NUM> can monitor the state of the fire prevention door and control the opening and closing of the fire prevention door. A general emergency alarm device and an on-ship notification device of item numbers <NUM> and <NUM> are notification devices for controlling passengers and crew members. The monitoring system <NUM> can monitor and control statuses of these devices. Regarding the devices with item numbers <NUM>, <NUM>, <NUM> to <NUM>, <NUM>, and <NUM> to <NUM>, the monitoring system <NUM> can monitor and control the status of each device. For example, in the case of a watertight door and a semi-watertight door of an item number <NUM>, the spread of flooding can be prevented by closing the watertight door, and in the case of a sprinkler of an item number <NUM>, the fire can be extinguished by operating the sprinkler. Devices of item numbers <NUM> to <NUM>, <NUM>, and <NUM> are sensors for detecting a disaster situation on the ship and a state of a hull (for example, a posture of the hull) related to the disaster. The monitoring system <NUM> can acquire and monitor information detected by each device (sensor). For example, in the case of a fire detection alarm device of an item number <NUM>, the location of the fire can be determined based on a position of the fire detection alarm device, in which the fire is detected, installed in the ship. Similarly, in the case of a flood detection device of an item number <NUM>, the flood occurrence location can be determined based on a position of the flood detection device, in which the flooding is detected, installed in the ship.

The safety devices illustrated in <FIG> is an example. For example, it is required to provide a safety center on a ship in safety of life at sea (SOLAS), and in the safety center, it is required that functions (operation, control, monitoring, or a combination thereof) of the safety devices listed below, which are also illustrated in <FIG>, can be used. That is, the devices are: <NUM>. power type ventilation device, <NUM>. fire prevention door, <NUM>. general emergency alarm device, <NUM>. on-ship notification device, <NUM>. electric drive type evacuation guidance device, <NUM>. watertight door and semi-watertight door, <NUM>. indicator for closing device such as gangway door or cargo gate door, <NUM>. leakage from inner bow door, outer bow door, stern door, or any other side skin doors of ship, <NUM>. television monitoring device, <NUM>. fire detection alarm device, <NUM>. fixed local fire extinguishing device, <NUM>. sprinkler and equivalent device, <NUM>. water-based fire extinguishing device for machinery area, <NUM>. crew member call alarm, <NUM>. atrium smoke evacuation device, <NUM>. flood detection device, <NUM>. fire pump and emergency fire extinguishing pump. A monitor or a control panel that monitors these safety devices are installed in the safety center. As for the ship <NUM> to which the SOLAS is not applied, generally, a control room is provided with various safety devices <NUM> defined with regulations and a control system for controlling these safety devices <NUM>. The on-ship system <NUM> of the present embodiment corresponds to a control room provided with a safety center and a safety device defined in the SOLAS, and a safety device and a control system in a ship to which SOLAS is not applied.

When a disaster such as fire or flooding occurs, the fire detection alarm device (item number <NUM> in <FIG>) or the flood detection device (item number <NUM> in <FIG>) are operated, and the crew member recognizes the occurrence of fire or the like. The crew member operates the control panel of the safety center or the control system to notify other crew members of an alarm (item number <NUM> in <FIG>), and control the appropriate safety device <NUM> to perform response to prevent the spread of fire and flooding. When the functions of the safety center or the control system are maintained in the event of a disaster and the situation on the ship does not affect the operation of the crew member, the on-ship system <NUM> can respond to the disaster. However, when a situation occurs in which the crew member cannot make a calm judgment and take measures at the safety center due to the fire or flooding (for example, a flame or smoke is approaching, a large inclination is caused by the flooding, or the like), the disaster response using the on-ship system <NUM> is not possible. In recent years, there has been a tendency to require labor savings for the crew members on the ship <NUM>, and in the labor-saving ship <NUM>, there is a possibility that there will be a shortage of crew members available for disaster response. Therefore, in the present embodiment, by constructing the land system <NUM> on the land side that has the same functions and configuration as the on-ship system <NUM>, the safety device <NUM> of the ship <NUM> can be monitored and controlled regardless of the situation on the ship or the shortage of crew members.

The on-ship system 20a includes the monitoring system 21a and the safety device <NUM>. The monitoring system 21a is configured with a computer and includes an input unit 22a, a control unit 23a, a storage unit 24a, an on-ship communication unit 25a, a land communication unit 26a, and a display unit 27a.

The input unit 22a is configured by using an input device such as a keyboard, a mouse, a touch panel, and a button. The input unit 22a receives a user's input to the monitoring system 21a. The input unit 22a outputs the content of the received input to the control unit 23a.

The control unit 23a performs control of the safety device <NUM>, display control of the display unit 27a, communication control with the safety device <NUM> via the on-ship communication unit 25a, communication control with the land system <NUM> via the land communication unit 26a, and the like. For example, the control unit 23a acquires information (for example, the occurrence of fire and the location of fire) detected by the safety device <NUM> (sensors exemplified in item numbers <NUM> to <NUM>, <NUM>, and <NUM> in <FIG>) and an operation state (activation/stop, opening/closing, or the like) of the safety device <NUM> (control target device exemplified in item number <NUM> in <FIG>) through the land communication unit 26a, and displays the information on the display unit 27a. The control unit 23a generates a control signal (for example, issuing a crew member call alarm, stopping the power type ventilation device, or the like) to the safety device <NUM> based on the operation of the crew member and outputs the generated control signal to the safety device <NUM> to be controlled through the land communication unit 26a.

The storage unit 24a is configured by using a storage device such as an HDD or a flash memory and stores the information or the like acquired from the safety device <NUM>.

The on-ship communication unit 25a communicates with the safety device <NUM>. For example, the on-ship communication unit 25a receives, from the safety device <NUM>, information indicating a situation on the ship and an operation state of the safety device <NUM> in real time. The on-ship communication unit 25a transmits the control signal to the safety device <NUM>.

The land communication unit 26a communicates with the land system <NUM>. For example, the land communication unit 26a receives, from the safety device <NUM>, the information indicating the situation on the ship or the operation state of the safety device <NUM> through the on-ship communication unit 25a in real time and transmits the information to the land system <NUM>. The land communication unit 26a receives the control signal transmitted by the land system <NUM> to the safety device <NUM> and transmits the control signal to the safety device <NUM> through the on-ship communication unit 25a.

The display unit 27a is configured by using a display device such as a liquid crystal display. The display unit 27a displays any information based on an instruction of the control unit 23a. For example, the display unit 27a displays the information received from the safety device <NUM> (the information detected by the sensors, the operation state of the safety device <NUM>, or the like).

The safety device <NUM> is a device (sensor) for detecting information related to the safety of a ship as illustrated in <FIG> or a device for maintaining safety. For example, when the safety device <NUM> is a sensor or a detection device, the safety device <NUM> includes a sensor body and a communication device. When the safety device <NUM> is a safety maintenance device such as a power type ventilation device or a crew member call alarm, the safety device <NUM> includes an actuator, a control device of an actuator, and a communication device.

The on-ship system 20b includes the monitoring system 21b, the safety device <NUM>, and the communication device <NUM>. The monitoring system 21b is configured with a computer and includes an input unit 22b, a control unit 23b, a storage unit 24b, an on-ship communication unit 25b, and a display unit 27b. The configurations and functions of these functional units are the same as those of the input unit 22a, the control unit 23a, the storage unit 24a, the on-ship communication unit 25a, and the display unit 27a described above, respectively. The difference from the on-ship system 20a is that in the on-ship system 20a, the monitoring system 21a relays communication between the safety device <NUM> and the land system <NUM>, whereas in the on-ship system 20b, the monitoring system 21b does not relay communication with the land system <NUM>. In the on-ship system 20b, the communication device <NUM> relays the communication between the safety device <NUM> and the land system <NUM>. For example, the communication device <NUM> receives, from the safety device <NUM>, the information indicating the situation on the ship or the operation state of the safety device <NUM> in real time and transmits the information to the land system <NUM>. The communication device <NUM> receives the control signal transmitted by the land system <NUM> to the safety device <NUM> and transmits the control signal to the safety device <NUM>. That is, in the case of the on-ship system 20b, even when the monitoring system 21b malfunctions or the like, the land system <NUM> can monitor and control the safety device <NUM> of the ship <NUM>.

The land system <NUM> is configured with a computer and includes an input unit <NUM>, a control unit <NUM>, a storage unit <NUM>, a communication unit <NUM>, and a display unit <NUM>.

The input unit <NUM> is configured by using an input device such as a keyboard, a mouse, a touch panel, and a button. The input unit <NUM> receives a user's input to the land system <NUM>. The input unit <NUM> outputs the content of the received input to the control unit <NUM>.

The control unit <NUM> controls various processes executed by the land system <NUM>. For example, the control unit <NUM> performs display control of the display unit <NUM>, communication control via the communication unit <NUM>, and the like.

The storage unit <NUM> is configured by using a storage device such as an HDD or a flash memory and stores the information or the like transmitted from the safety device <NUM>.

The communication unit <NUM> communicates with the on-ship system <NUM>. For example, the communication unit <NUM> acquires, from the on-ship system <NUM>, the information indicating the situation on the ship detected by the safety device <NUM> or the operation state of the safety device <NUM> in real time. The communication unit <NUM> transmits the control signal for the safety device <NUM> to the on-ship system <NUM>.

The display unit <NUM> is configured by using a display device such as a liquid crystal display. The display unit <NUM> can display any information based on an instruction of the control unit <NUM>. For example, the display unit <NUM> displays the situation on the ship (presence or absence of fire or flooding, a video of a television monitoring device, or the like) received from the on-ship system <NUM>.

The land system <NUM> is constructed by mirroring the safety center or the control room on the ship and has the same functions and configurations as the safety center on the ship and the like. The land system <NUM> is, so to speak, a safety center or a control room constructed on the land side. There is a monitoring person on land, and the monitoring person monitors a plurality of ships <NUM>. For example, when a disaster or the like occurs in any of the ships <NUM>, the monitoring person monitors data displayed on the display unit <NUM> and controls the safety device <NUM> to prevent the spread of the disaster. The input unit <NUM> receives an input of instruction information for controlling the safety device <NUM> by the monitoring person, and the control unit <NUM> transmits the instruction information, which is input to the on-ship system <NUM>, via the communication unit <NUM>.

Next, the operation of the safety system <NUM> will be described with reference to <FIG> and <FIG>. As an example, it is assumed that the ship <NUM> is provided with the safety center, and the crew members monitor the ship at the safety center.

<FIG> shows an example of an operation of monitoring and control for the safety device <NUM> of the ship <NUM> provided with the on-ship system 20a. As an example, it is shown an example of the operation in which when a disaster occurs on the ship, the on-ship system 20a and the land system <NUM> cooperate (for example, some of the safety devices <NUM> are controlled in the on-ship system 20a, and other safety devices <NUM> are controlled from the land system <NUM>) to respond to the disaster. First, each of the plurality of safety devices <NUM> transmits the information related to the disaster (presence or absence of fire, presence or absence of flooding, inclination of the ship, or the like) detected by the safety device and the information related to the operation state (in operation, stopped, or the like) of the safety device to the on-ship system 20a (step S1). In the on-ship system 20a, the on-ship communication unit 25a acquires the information or the like detected by the safety device <NUM>. The on-ship communication unit 25a outputs the acquired information to the control unit 23a and the land communication unit 26a. The land communication unit 26a acquires the information transmitted from the safety device <NUM> through the on-ship communication unit 25a and transmits the information to the land system <NUM> (step S1').

The control unit 23a of the on-ship system 20a outputs the information transmitted from the safety device <NUM> to the display unit 27a. For example, the display unit 27a displays the information indicating safety on the ship and the information indicating the operation state of each safety device (step S2). The crew member determines whether or not it is necessary to respond to the disaster while monitoring the information displayed on the display unit 27a. When a disaster occurs, the crew member operates the control panel at a safety center or the like to control the safety device <NUM>.

In the land system <NUM>, the control unit <NUM> acquires the information transmitted by the land communication unit 26a through the communication unit <NUM> and outputs the acquired information to the display unit <NUM>. The display unit <NUM> displays the information indicating safety on the ship and the information indicating the operation state of each safety device (step S2'). The monitoring person on land determines whether or not it is necessary to respond to the disaster while monitoring the information displayed on the display unit <NUM>. When a disaster occurs, the monitoring person operates the land system <NUM> to remotely control the safety device <NUM>.

When a disaster occurs on the ship, information indicating the occurrence of the disaster is transmitted to the monitoring system 21a and the land system <NUM> by the above process. In the present example, it is assumed that a disaster has occurred. In this case, the crew member determines that it is necessary to respond to the disaster, selects the necessary safety device <NUM>, operates the control panel of the safety center, and performs an operation on the selected safety device <NUM>. The input unit 22a receives an input of an instruction operation by the crew member, and the control unit 23a generates a control signal to be sent to the safety device <NUM>, which is a control target, based on the instruction operation. Thereafter, the control unit 23a transmits the control signal to the safety device <NUM> through the on-ship communication unit 25a (step S3).

The safety device <NUM>, in which the control signal is received from the on-ship system 20a, is operated based on the control signal (step S4). For example, when a control signal is issued to close a fire prevention door in the event of fire, the control device for the fire prevention door (safety device <NUM>) controls the actuator in response to the transmitted control signal and performs an operation to close the fire prevention door.

On the other hand, in the monitoring station on land, when the monitoring person determines that the response to the disaster is necessary, the operation on the safety device <NUM> that needs to be controlled is input to the land system <NUM>. For example, even in a case where predetermined time has elapsed since information indicating the occurrence of the disaster was displayed on the display unit <NUM>, when a control signal for operating the safety device <NUM> to be controlled (for example, a sprinkler) is not issued from the on-ship system 20a (in other words, when the operation state of the safety device to be controlled is not changed to an appropriate state), the monitoring person on land determines that a response is necessary and inputs an instruction operation to be sent to the safety device <NUM> to the land system <NUM>. Alternatively, in order to speed up the initial response by simultaneously responding on the ship and on land, the on-ship system 20a and the land system <NUM> may be assigned responsibility for the safety devices <NUM> in advance, and an instruction operation to be sent to the safety device <NUM> may be input to the land system <NUM> in accordance with the assigned responsibility. When the instruction operation is input, the input unit <NUM> receives the input of the instruction operation by the monitoring person, and the control unit <NUM> generates a control signal to be sent to the safety device <NUM> based on the instruction operation. Thereafter, the control unit <NUM> transmits the control signal to the on-ship system 20a through the communication unit <NUM> (step S5). When a control signal is transmitted from the land system <NUM>, the land communication unit 26a receives the control signal and transmits the control signal to the safety device <NUM> through the on-ship communication unit 25a (step S6). As a result, the safety device <NUM> is operated by the remote operation from land.

The safety device <NUM>, in which the control signal is received from the land system <NUM>, is operated based on the control signal (step S7). For example, when a control signal is issued to operate a sprinkler in the event of fire, the control device for the sprinkler (safety device <NUM>) controls the actuator in response to the transmitted control signal and performs an operation to inject fire extinguishing water.

As described above, according to the present embodiment, the safety device <NUM> can be monitored and controlled even in the land system <NUM>. Therefore, even when the safety device <NUM> cannot be controlled from the on-ship system <NUM> for some reason, the safety device <NUM> can be controlled from the land system <NUM> to prevent the spread of the disaster. For example, when a video from the television monitoring device (the item number <NUM> in <FIG>) is monitored from land and suspicious fire, which is not noticed by the crew member on the ship, or a flame, which cannot be detected by the fire detection alarm device, is noticed, by quickly operating the safety device <NUM> from land and notifying the crew member on the ship, early detection and early response to disasters becomes possible.

Next, with reference to <FIG>, monitoring and control of the safety device <NUM> of the ship <NUM> provided with the on-ship system 20b will be described. <FIG> shows an example of an operation in a case where some trouble occurs on the on-ship system 20b side. First, the safety device <NUM> transmits the information related to a disaster detected by the safety device and the information related to an operation state of the safety device to the on-ship system 20b (step S11). In parallel, the safety device <NUM> transmits the information related to the disaster detected by the safety device and the information related to the operation state of the safety device to the communication device <NUM> (step S12). When the communication device <NUM> receives the information transmitted from the safety device <NUM>, the communication device <NUM> transmits the received information to the land system <NUM> (step S13).

In the on-ship system 20b, the on-ship communication unit 25b acquires the information transmitted from the safety device <NUM>. The on-ship communication unit 25b outputs the acquired information to the control unit 23b. The control unit 23b outputs the information transmitted from the safety device <NUM> to the display unit 27b. The display unit 27b displays the information indicating safety on the ship and the information indicating the operation state of each safety device (step S14). The crew member determines whether or not it is necessary to respond to a disaster while monitoring the information displayed on the display unit 27b.

In the land system <NUM>, the control unit <NUM> acquires the information transmitted by the communication device <NUM> through the communication unit <NUM> and outputs the acquired information to the display unit <NUM>. The display unit <NUM> displays the information indicating safety on the ship and the information indicating the operation state of each safety device (step S14). The monitoring person on land determines whether or not it is necessary to respond to the disaster while monitoring the information displayed on the display unit <NUM>.

When a disaster occurs on the ship, information indicating the occurrence of the disaster is transmitted to the monitoring system 21b and the land system <NUM> by the above process. In the present example, it is assumed that a disaster has occurred. In this case, normally, the crew member determines that it is necessary to respond to the disaster and performs an operation on the safety device <NUM>. The control unit 23b generates a control signal to be sent to the safety device <NUM> based on the operation of the crew member. The control unit 23b transmits the control signal to the safety device <NUM> through the on-ship communication unit 25b, and the safety device <NUM>, in which the control signal is received from the on-ship system 20b, is operated based on the control signal. These operations are the same as in the case of the on-ship system 20a described with reference to <FIG> (steps S3 to S4). On the other hand, in the present flowchart, it is assumed that a trouble has occurred such as a shortage of personnel on the ship or a malfunction of the monitoring system 21b, which makes it impossible to control the safety device <NUM> from the on-ship system 20b (step S15). In this case, a situation may occur in which the crew member is unable to monitor the display unit 27b due to a shortage of personnel or a situation may occur in which a control signal is not generated or transmitted even when the crew member performs an operation on the safety device <NUM>, and thereby a situation occurs in which the safety device <NUM> is not controlled by the on-ship system 20b.

On the other hand, in the land system <NUM>, when the monitoring person determines that it is necessary to respond to a disaster, the monitoring person performs an operation on the safety device <NUM> that needs to be controlled by using the land system <NUM>. For example, when the crew member call alarm (item number <NUM> in <FIG>) is not issued (for example, the monitoring system 21b does not function due to malfunction, the crew member is not available, or the like) even though the fire detection alarm device (item number <NUM> in <FIG>) is operated, or when the flood detection device (item number <NUM> in <FIG>) is not operated even though a video transmitted from the television monitoring device (item number <NUM> in <FIG>) shows signs of suspected flooding, the monitoring person on land first determines that it is necessary to inform the crew member on the ship of the occurrence of fire and flooding and performs an instruction of the operation of the crew member call alarm (safety device <NUM>) with respect to the land system <NUM>. Thereafter, the control unit <NUM> generates a control signal for instructing the issuance of the crew member call alarm and transmits the control signal to the communication device <NUM> through the communication unit <NUM> (step S16). The communication device <NUM> receives the control signal transmitted from the land system <NUM> and transmits the control signal to the safety device <NUM> (step S17). The safety device <NUM>, in which the control signal is received from the land system <NUM>, is operated based on the control signal (step S18). In the case of this example, the crew member call alarm is issued.

As described above, according to the on-ship system 20b and the land system <NUM>, in addition to the effects obtained by the combination of the on-ship system 20a and the land system <NUM>, the safety device <NUM> can be controlled from the land system <NUM> regardless of the state of the monitoring system 21b.

Even in the combination of the on-ship system 20a and the land system <NUM>, unless communication between the land system <NUM> and the safety device <NUM> is cut off due to a trouble in the land communication unit 26a, it is possible to respond to a disaster by controlling the safety device <NUM> from the land system <NUM> in the same manner as the operation described with reference to <FIG> even when a trouble occurs on the on-ship system 20a side. Needless to say, even with the combination of the on-ship system 20b and the land system <NUM>, the same operation as the described with reference to <FIG> can be performed.

It is possible to provide priorities in controls for the monitoring system <NUM> and the land system <NUM>. By providing priorities, it is possible to avoid an operation inconsistency in a case where the monitoring system <NUM> and the land system <NUM> output control signals having different instruction contents to the same safety device <NUM>. <FIG> shows an example of priorities. (<NUM>) An operation mode <NUM> is a normal priority (initial setting of priority). The highest priority is a control method in which manual control is directly performed on the safety device <NUM>. For example, a button is installed near the fire prevention door, and the fire prevention door opens and closes when the button is pressed. Even in a case where the control is performed to keep the fire prevention door open by using other methods (for example, automatic control or instructions from the safety center), when the crew member presses the button, the fire prevention door can be closed. The next highest priority is control by the monitoring system <NUM> of the safety center. For example, even in a case where control is performed with the automatic control of the third priority such as keeping the fire prevention door open (for example, automatic control is set to open the fire prevention door in a state in which the fire detection alarm device is not operated), when the monitoring system <NUM> controls the fire prevention door to close, the fire prevention door can be closed. The lowest priority is the control from the land system <NUM>. In the operation mode <NUM>, only the safety device <NUM> that is not controlled by other means can be controlled from the land system <NUM>. Even in the operation mode <NUM>, when a control signal is transmitted from the land system <NUM> and permission and approval for the control signal are input from the monitoring system <NUM> on the ship, the control signal may be configured to be handled as a control signal having the same second priority as control by the monitoring system <NUM>.

(<NUM>) An operation mode <NUM> is an operation mode in which the land system <NUM> is given priority. In the operation mode <NUM>, the first priority is "manual", the second priority is "land system", the third priority is "automatic control", and the fourth priority is "on-ship monitoring system". For example, in a case where the ship <NUM> is labor-saving and the number of crew members is small, the priority of the operation mode <NUM> may be set. As a result, it is possible to leave the response in the event of a disaster to the land side. Alternatively, even though the operation mode <NUM> is set and the fire detection alarm device or the flood detection device is operated, and after that, when a situation occurs where the crew member call alarm is not fired even after the predetermined time has elapsed (when an event occurs where it is assumed that the monitoring system <NUM> is not functioning), the operation mode <NUM> may be automatically switched to the operation mode <NUM>. As a result, basically, although a system is based on the crew members responding to a disaster at the safety center on the ship, in the event that it is no longer possible to respond to a disaster on the ship due to changes in situation on the ship or a shortage of manpower, it is possible to switch to the land-based control.

(<NUM>) An operation mode <NUM> has the same priority as the operation mode <NUM> and is an operation mode in which only monitoring is permitted from the land system <NUM>. For example, the operation mode <NUM> is set in the initial setting, and when the monitoring person on land notices anything during the monitoring, the monitoring person separately contacts the crew member via radio or other means. When there is a shortage of crew members or a situation occurs where monitoring at the safety center is not possible due to the occurrence of a disaster on the ship, the mode may be switched from the operation mode <NUM> to the operation mode <NUM> or an operation mode <NUM>, which will be described next, by performing an input for switching the operation mode from the monitoring system <NUM> or the land system <NUM>.

(<NUM>) The operation mode <NUM> is the same priority setting as the operation mode <NUM> and is an operation mode in which the monitoring system <NUM> on the ship is set to be invalid or only monitoring is permitted. For example, in a case where the ship <NUM> is a labor-saving or unmanned ship, the operation mode <NUM> may be applied.

The operation mode illustrated in <FIG> is an example and is not limited thereto. For example, in the operation modes <NUM> and <NUM>, the third and fourth priorities may be set in reverse. Considering temporal changes in a disaster situation, even after the operation of a certain safety device <NUM> is once controlled by high priority means, when the predetermined time has elapsed or a situation has been changed (for example, when the safety device <NUM>, which was not operated at that time after the high priority means output the control signal, detects a disaster and is operated or when the safety device <NUM> detects information with different levels (for example, when inclination of a hull indicated by a hull posture draft gauge worsens or improves)), even when lower priority means outputs a control signal with different contents to the same safety device <NUM>, the control signal may be configured to be valid. Any priorities may be set for each ship <NUM>. The display unit <NUM> of the land system <NUM> may display the operation mode for each ship <NUM>. As a result, when a disaster occurs on a certain ship <NUM>, the monitoring person can understand whether only monitoring needs to be performed while leaving control to the ship basically, or whether the control of the safety device <NUM> needs to be performed in addition to the monitoring.

As described above, according to the present embodiment, an environment (land system <NUM>) is constructed on land, which is equivalent to the safety center or the like that enables remote operation and reception of information related to the safety devices <NUM> collected in the safety center or the control room on the ship, and the information (fire detection, flood detection, watertight door, opening/closing of fire prevention door, operation of fire extinguishing device, or the like) related to the safety device <NUM> on the ship is transmitted to the land system <NUM>, which is a safety center on land, via the communication device <NUM> or the land communication unit 26a. A monitoring person in charge of monitoring and controlling the system is assigned in the land system <NUM>, and the same work (operation, control, monitoring of the safety devices, or a combination thereof) as at the safety center on the ship is performed on land. When a disaster occurs on the ship <NUM>, a situation on the ship is monitored from the land system <NUM>, and if necessary, the safety device is remotely operated from the land to response to the disastrous situation. As described above, also in the land system <NUM>, which is the safety center on land, by receiving the same information as the monitoring system <NUM> on the ship, the same monitoring and remote control as the safety center on the ship is possible on the land side. In the land system <NUM> on land, it is possible to take a calm response without being affected by fire or the inclination caused by flooding. Since the land system <NUM> can monitor and control the plurality of ships <NUM> in parallel at the same time, it is possible to contribute to unmanned or labor saving of the ships.

<FIG> is a diagram showing an example of a hardware configuration of the safety system according to the embodiment.

A computer <NUM> includes a CPU <NUM>, a main storage device <NUM>, an auxiliary storage device <NUM>, an input/output interface <NUM>, and a communication interface <NUM>.

The land system <NUM> and the monitoring system <NUM> described above are mounted on the computer <NUM>. Further, each above-mentioned function is stored in the auxiliary storage device <NUM> in the form of a program. The CPU <NUM> reads the program from the auxiliary storage device <NUM>, loads the program into the main storage device <NUM>, and executes the above processes according to the program. The CPU <NUM> ensures a storage area in the main storage device <NUM> according to the program. The CPU <NUM> ensures a storage area for storing the data being processed in the auxiliary storage device <NUM> according to the program.

A program for implementing all or some of the functions of the land system <NUM> and the monitoring system <NUM> may be recorded on a computer-readable recording medium, and the program recorded on the recording medium may be read by a computer system and executed to perform processes by each functional unit. The term "computer system" as used herein includes hardware such as an OS or peripheral devices. The "computer system" is also assumed to include a homepage providing environment (or display environment) when a WWW system is used. The "computer-readable recording medium" refers to a portable medium such as a CD, DVD, or USB, or a storage device such as a hard disk built in the computer system. When this program is distributed to the computer <NUM> by using a communication line, the computer <NUM>, which has received the distribution of the program, may load the program into the main storage device <NUM> and execute the above processes. The above-mentioned program may be a program for implementing some of the above-mentioned functions and further implementing the above-mentioned functions in combination with a program already recorded in the computer system.

Claim 1:
A safety system (<NUM>) comprising:
an on-ship system (<NUM>, 20a, 20b) that is provided on a ship (<NUM>); and
a land system (<NUM>) that is provided on land,
wherein the on-ship system (<NUM>, 20a, 20b) includes
a safety detection device and a safety maintenance device for preventing disasters occurring in the ship (<NUM>), that are provided on the ship (<NUM>),
a first acquisition unit (25a, 25b) that acquires information detected by the safety detection device and information indicating an operation state of the safety maintenance device,
a first control unit (23a, 23b) that controls an actuator included in the safety maintenance device, and
a communication unit (26a, <NUM>) that communicates with the land system (<NUM>), and
the land system (<NUM>) includes
a second acquisition unit (<NUM>) that acquires the information detected by the safety detection device and the information indicating the operation state of the safety maintenance device through the communication unit (26a, <NUM>), and
a second control unit that outputs a control signal for controlling the actuator included in the safety maintenance device to the safety maintenance device through the communication unit (26a, <NUM>),
characterized in that after the first control unit (23a, 23b) outputs a control signal to one of the safety maintenance devices, even when the second control unit outputs a control signal to the corresponding safety maintenance device, the control signal is set to be invalid, wherein after the first control unit (23a, 23b) outputs the control signal to one of the safety maintenance devices, when predetermined time elapses or the information detected by the safety detection device is changed, the control signal output to the corresponding safety maintenance device by the second control unit is set to be valid.