Patent Application
20250074556
The present disclosure relates to a safety system, a land system, an on-ship system, and a control method.
The present application claims priority based on Japanese Patent Application No. 2021-140870 filed in Japan on Aug. 31, 2021, the content of which is incorporated herein by reference.
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 1 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
The safety system 100 includes an on-ship system 20 mounted on each of one or a plurality of ships 1 and a land system 10 provided in a monitoring station on land. The land system 10 and the on-ship system 20 of each ship 1 are connected to each other via a network in a communicable manner. The on-ship system 20 is a system that monitors and controls a safety device in the ship 1. In general, the ship 1 is provided with the on-ship system 20 for monitoring the safety on the ship or responding to a disaster. The on-ship system 20 constantly monitors the ship, and when a disaster such as fire or flooding occurs, the on-ship system 20 responds to the disaster by operating the safety device 2. On the other hand, in the safety system 100 of the present embodiment, in addition to the on-ship system 20, the land system 10 having the same function and configuration as the on-ship system 20 is provided on land, and remote monitoring of a plurality of ships 1 is also performed from the land system 10. When a disaster occurs on the ship 1, the safety device 2 included in the ship 1 is remotely controlled to respond to the disaster.
The on-ship system 20 is classified into an on-ship system 20a, which includes a safety device 2 and a monitoring system 21a monitoring and controlling the safety device 2, and an on-ship system 20b, which includes a safety device 2, a communication device 3, and a monitoring system 21b. In the on-ship system 20a, the monitoring system 21a communicates with the land system 10, and the land system 10 monitors and controls the safety device 2 through the monitoring system 21a. In the on-ship system 20b, the communication device 3 communicates with the land system 10, and the land system 10 monitors and controls the safety device 2 through the communication device 3 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 20 and the monitoring systems 21a and 21b may be referred to as the monitoring system 21.
The safety device 2 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 2 is shown in
The safety devices illustrated in
When a disaster such as fire or flooding occurs, the fire detection alarm device (item number 10 in
The on-ship system 20a includes the monitoring system 21a and the safety device 2. 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 2, display control of the display unit 27a, communication control with the safety device 2 via the on-ship communication unit 25a, communication control with the land system 10 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 2 (sensors exemplified in item numbers 7 to 10, 16, and 18 in
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 2.
The on-ship communication unit 25a communicates with the safety device 2. For example, the on-ship communication unit 25a receives, from the safety device 2, information indicating a situation on the ship and an operation state of the safety device 2 in real time. The on-ship communication unit 25a transmits the control signal to the safety device 2.
The land communication unit 26a communicates with the land system 10. For example, the land communication unit 26a receives, from the safety device 2, the information indicating the situation on the ship or the operation state of the safety device 2 through the on-ship communication unit 25a in real time and transmits the information to the land system 10. The land communication unit 26a receives the control signal transmitted by the land system 10 to the safety device 2 and transmits the control signal to the safety device 2 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 2 (the information detected by the sensors, the operation state of the safety device 2, or the like).
The safety device 2 is a device (sensor) for detecting information related to the safety of a ship as illustrated in
The on-ship system 20b includes the monitoring system 21b, the safety device 2, and the communication device 3. 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 2 and the land system 10, whereas in the on-ship system 20b, the monitoring system 21b does not relay communication with the land system 10. In the on-ship system 20b, the communication device 3 relays the communication between the safety device 2 and the land system 10. For example, the communication device 3 receives, from the safety device 2, the information indicating the situation on the ship or the operation state of the safety device 2 in real time and transmits the information to the land system 10. The communication device 3 receives the control signal transmitted by the land system 10 to the safety device 2 and transmits the control signal to the safety device 2. That is, in the case of the on-ship system 20b, even when the monitoring system 21b malfunctions or the like, the land system 10 can monitor and control the safety device 2 of the ship 1.
The land system 10 is configured with a computer and includes an input unit 11, a control unit 12, a storage unit 13, a communication unit 14, and a display unit 15.
The input unit 11 is configured by using an input device such as a keyboard, a mouse, a touch panel, and a button. The input unit 11 receives a user's input to the land system 10. The input unit 11 outputs the content of the received input to the control unit 12.
The control unit 12 controls various processes executed by the land system 10. For example, the control unit 12 performs display control of the display unit 15, communication control via the communication unit 14, and the like.
The storage unit 13 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 2.
The communication unit 14 communicates with the on-ship system 20. For example, the communication unit 14 acquires, from the on-ship system 20, the information indicating the situation on the ship detected by the safety device 2 or the operation state of the safety device 2 in real time. The communication unit 14 transmits the control signal for the safety device 2 to the on-ship system 20.
The display unit 15 is configured by using a display device such as a liquid crystal display. The display unit 15 can display any information based on an instruction of the control unit 12. For example, the display unit 15 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 20.
The land system 10 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 10 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 1. For example, when a disaster or the like occurs in any of the ships 1, the monitoring person monitors data displayed on the display unit 15 and controls the safety device 2 to prevent the spread of the disaster. The input unit 11 receives an input of instruction information for controlling the safety device 2 by the monitoring person, and the control unit 12 transmits the instruction information, which is input to the on-ship system 20, via the communication unit 14.
Next, the operation of the safety system 100 will be described with reference to
The control unit 23a of the on-ship system 20a outputs the information transmitted from the safety device 2 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 2.
In the land system 10, the control unit 12 acquires the information transmitted by the land communication unit 26a through the communication unit 14 and outputs the acquired information to the display unit 15. The display unit 15 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 15. When a disaster occurs, the monitoring person operates the land system 10 to remotely control the safety device 2.
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 10 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 2, operates the control panel of the safety center, and performs an operation on the selected safety device 2. 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 2, which is a control target, based on the instruction operation. Thereafter, the control unit 23a transmits the control signal to the safety device 2 through the on-ship communication unit 25a (step S3).
The safety device 2, 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 2) 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 2 that needs to be controlled is input to the land system 10. 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 15, when a control signal for operating the safety device 2 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 2 to the land system 10. 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 10 may be assigned responsibility for the safety devices 2 in advance, and an instruction operation to be sent to the safety device 2 may be input to the land system 10 in accordance with the assigned responsibility. When the instruction operation is input, the input unit 11 receives the input of the instruction operation by the monitoring person, and the control unit 12 generates a control signal to be sent to the safety device 2 based on the instruction operation. Thereafter, the control unit 12 transmits the control signal to the on-ship system 20a through the communication unit 14 (step S5). When a control signal is transmitted from the land system 10, the land communication unit 26a receives the control signal and transmits the control signal to the safety device 2 through the on-ship communication unit 25a (step S6). As a result, the safety device 2 is operated by the remote operation from land.
The safety device 2, in which the control signal is received from the land system 10, 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 2) 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 2 can be monitored and controlled even in the land system 10. Therefore, even when the safety device 2 cannot be controlled from the on-ship system 20 for some reason, the safety device 2 can be controlled from the land system 10 to prevent the spread of the disaster. For example, when a video from the television monitoring device (the item number 9 in
Next, with reference to
In the on-ship system 20b, the on-ship communication unit 25b acquires the information transmitted from the safety device 2. 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 2 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 10, the control unit 12 acquires the information transmitted by the communication device 3 through the communication unit 14 and outputs the acquired information to the display unit 15. The display unit 15 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 15.
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 10 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 2. The control unit 23b generates a control signal to be sent to the safety device 2 based on the operation of the crew member. The control unit 23b transmits the control signal to the safety device 2 through the on-ship communication unit 25b, and the safety device 2, 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
On the other hand, in the land system 10, when the monitoring person determines that it is necessary to respond to a disaster, the monitoring person performs an operation on the safety device 2 that needs to be controlled by using the land system 10. For example, when the crew member call alarm (item number 14 in
As described above, according to the on-ship system 20b and the land system 10, in addition to the effects obtained by the combination of the on-ship system 20a and the land system 10, the safety device 2 can be controlled from the land system 10 regardless of the state of the monitoring system 21b.
Even in the combination of the on-ship system 20a and the land system 10, unless communication between the land system 10 and the safety device 2 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 2 from the land system 10 in the same manner as the operation described with reference to
It is possible to provide priorities in controls for the monitoring system 21 and the land system 10. By providing priorities, it is possible to avoid an operation inconsistency in a case where the monitoring system 21 and the land system 10 output control signals having different instruction contents to the same safety device 2.
(2) An operation mode 2 is an operation mode in which the land system 10 is given priority. In the operation mode 2, 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 1 is labor-saving and the number of crew members is small, the priority of the operation mode 2 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 1 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 not is fired even after the predetermined time has elapsed (when an event occurs where t is assumed that the monitoring system 21 is not functioning), the operation mode 1 may be automatically switched to the operation mode 2. 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.
(3) An operation mode 3 has the same priority as the operation mode 1 and is an operation mode in which only monitoring is permitted from the land system 10. For example, the operation mode 3 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 3 to the operation mode 2 or an operation mode 4, which will be described next, by performing an input for switching the operation mode from the monitoring system 21 or the land system 10.
(4) The operation mode 4 is the same priority setting as the operation mode 2 and is an operation mode in which the monitoring system 21 on the ship is set to be invalid or only monitoring is permitted. For example, in a case where the ship 1 is a labor-saving or unmanned ship, the operation mode 4 may be applied.
The operation mode illustrated in
As described above, according to the present embodiment, an environment (land system 10) 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 2 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 2 on the ship is transmitted to the land system 10, which is a safety center on land, via the communication device 3 or the land communication unit 26a. A monitoring person in charge of monitoring and controlling the system is assigned in the land system 10, 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 1, a situation on the ship is monitored from the land system 10, 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 10, which is the safety center on land, by receiving the same information as the monitoring system 21 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 10 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 10 can monitor and control the plurality of ships 1 in parallel at the same time, it is possible to contribute to unmanned or labor saving of the ships.
A computer 900 includes a CPU 901, a main storage device 902, an auxiliary storage device 903, an input/output interface 904, and a communication interface 905.
The land system 10 and the monitoring system 21 described above are mounted on the computer 900. Further, each above-mentioned function is stored in the auxiliary storage device 903 in the form of a program. The CPU 901 reads the program from the auxiliary storage device 903, loads the program into the main storage device 902, and executes the above processes according to the program. The CPU 901 ensures a storage area in the main storage device 902 according to the program. The CPU 901 ensures a storage area for storing the data being processed in the auxiliary storage device 903 according to the program.
A program for implementing all or some of the functions of the land system 10 and the monitoring system 21 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 900 by using a communication line, the computer 900, which has received the distribution of the program, may load the program into the main storage device 902 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.
As described above, some embodiments according to the present disclosure have been described, but all of these embodiments are presented as examples and are not intended to limit the scope of the invention. These embodiments can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the gist of the invention. These embodiments and variations thereof are included in the scope of the invention described in the claims and the equivalent scope thereof, as well as in the scope and gist of the invention.
The safety system, the land system, the on-ship system, and the control method described in each embodiment are ascertained as follows, for example.
(1) A safety system 100 according to a first aspect includes: an on-ship system (20a, 20b) that is provided on a ship and that includes a safety detection device (for example, sensors such as the item numbers 7 to 10, 16, and 18 among the safety devices 2 illustrated in
As a result, the safety device 2 can be monitored and controlled not only from the on-ship system 20 but also from the land system 10.
(2) In the safety system 100 of a second aspect according to the safety system of (1), the on-ship system 20 and the land system 10 acquire the information detected by the same safety detection device and the information indicating the state of the same safety maintenance device.
As a result, even in the land system 10, the same information as in the ship can be obtained and the situation on the ship can be monitored.
(3) In the safety system 100 of a third aspect according to the safety system of (1) or (2), after the first control unit 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 (operation mode 1 in
As a result, even when different control signals are instructed to the same safety device 2, the safety device 2 can be controlled without any inconsistency.
(4) In the safety system 100 of a fourth aspect according to the safety system of (3), after the first control unit 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.
As a result, when appropriate control is not performed from the on-ship system 20 to the safety device 2 even in a case where the disaster situation is changed, the corresponding safety device 2 can be controlled from the land system 10.
(5) In the safety system 100 of a fifth aspect according to the safety system of (1) or (2), after the second control unit outputs a control signal to one of the safety maintenance devices, even when the first control unit outputs a control signal to the corresponding safety maintenance device, the control signal is set to be invalid (operation mode 2 in
For example, by setting a labor-saving ship in the operation mode 2, the crew member on the ship can leave the response to the land side in the event of a disaster.
(6) In the safety system 100 of a sixth aspect according to the safety system of (1) or (2), a first operation mode in which, after the first control unit 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, and a second operation mode in which, after the second control unit outputs a control signal to one of the safety maintenance devices, even when the first control unit outputs a control signal to the corresponding safety maintenance device, the control signal is set to be invalid, can be set in a switchable manner.
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 lack of manpower, it is possible to switch to the land-based control.
(7) A land system according to a seventh aspect 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.
As a result, it is possible to monitor the safety detection device and the safety maintenance device on the ship from the land system and control the safety maintenance device.
(8) An on-ship system according to an eighth aspect 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.
As a result, it is possible to implement a land system in which similar functions are mirrored on the land side while maintaining the functions to execute, on the ship, monitoring the safety detection device and safety maintenance device, which are generally provided on the ship, and controlling the safety maintenance device.
(9) A control method according to a ninth aspect is a control method of a safety detection device and a safety maintenance device provided on a ship, the control method includes: step of acquiring, by an on-ship system provided on the ship, information detected by the safety detection device 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.
| Number | Date | Country | Kind |
|---|---|---|---|
| 2021-140870 | Aug 2021 | JP | national |
| Filing Document | Filing Date | Country | Kind |
|---|---|---|---|
| PCT/JP2022/018460 | 4/21/2022 | WO |
