Marine watertight door alarm system, control method, storage medium and computer equipment

Abstract

The invention relates to the technical field of ship watertight door monitoring, in particular to a ship watertight door alarm system, a control method, a storage medium and computer equipment, a pressure sensor and a ball are arranged in a first transmission section, and a control unit and an alarm device are combined, so that no matter a watertight door is in an incomplete locking state or an opening state, the watertight door is not completely locked. And the control unit controls the alarm device to act to remind sailors, so that potential safety hazards are reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of ship watertight door monitoring, and in particular to a ship watertight door alarm system and control method, storage medium, and computer equipment. Background Art

[0002] Due to the huge hull of large container ships, watertight doors are used to divide the cargo hold area into multiple parts, and the crew can enter and exit the cargo hold through the watertight doors. According to the specification requirements, after the crew enters and exits the cargo hold, the ship's watertight door needs to be in a normally closed state to prevent the dangerous situation of water entering the hull due to the watertight door not being closed. In order to solve this problem, a ship watertight door alarm system is designed to display the opening and closing status of the watertight door. That is, the opening and closing status of the watertight door is judged by the limit switch installed on the watertight door. When the watertight door is in a closed state, the internal circuit of the door limit sensor is closed. When the watertight door is in an open state, the internal circuit of the door limit sensor is disconnected and an alarm signal is sent to alert the crew.

[0003] However, the traditional ship watertight door alarm system only provides an indication of the open and closed status of the watertight door. When the watertight door is only closed but not locked, the alarm will not be triggered, thus there will still be a safety hazard. Summary of the invention

[0004] In view of the shortcomings of the prior art described above, an object of the present invention is to provide a ship watertight door alarm system and control method, storage medium, and computer equipment, which are used to solve the problem that the ship watertight door alarm system in the prior art only provides an indication of the open and closed status of the watertight door. When the watertight door is only closed but not locked, the alarm will not be triggered, so there will still be a safety hazard.

[0005] To achieve the above-mentioned object and other related objects, the present invention provides a marine watertight door alarm system, based on a watertight door locking structure, the locking structure includes two transmission components respectively arranged on one side inside and one side outside the watertight door cabin, the two transmission components can act synchronously, each of the transmission components includes a first transmission section, the first transmission section is arranged to be rotatable around one end, the first transmission section is in a state of tilting upward in a direction away from a rotation point when the watertight door is locked, and is in a state of tilting downward in a direction away from a rotation point when the watertight door is opened, the upward inclination angle of the first transmission section gradually increases from the watertight door opening state to the locking state, the alarm system includes a pressure sensor, a ball, an alarm device and a control unit, the pressure sensor and the alarm device are both electrically connected to the control unit, the first transmission section is arranged as a hollow structure, the pressure sensor and the ball are both arranged inside the first transmission section, the pressure sensor is arranged at a position of the first transmission section close to the rotation point and the sensing end of the pressure sensor is arranged on the side of the pressure sensor away from the rotation point, and the ball is at the sensing end of the pressure sensor.

[0006] Optionally, the alarm system further includes a temperature sensor, which is electrically connected to the control unit. Each of the transmission components further includes a handle, and the temperature sensor is disposed on the handle.

[0007] Optionally, the alarm device includes an audible and visual alarm, which is electrically connected to the control unit and is arranged near the watertight door.

[0008] Optionally, the alarm device further comprises an extended alarm panel, which is also electrically connected to the control unit. The extended alarm panel is arranged at the ship control station and is used to display the opening and closing status of the watertight door and the entry and exit status of the crew.

[0009] Optionally, the alarm system further comprises a lighting unit, which is also electrically connected to the control unit, and comprises lighting devices respectively arranged inside and outside the cabin.

[0010] Optionally, the alarm system further comprises a navigation recording unit, which is also electrically connected to the control unit and is used to record a working signal of the control unit.

[0011] The present invention also provides a method for controlling a marine watertight door alarm system. Based on the marine watertight door alarm system described above, the control method comprises:

[0012] Initialization parameter setting, including setting the pressure sensor threshold value P0, setting the first preset time T1, setting the second preset time T2, setting the third preset time T3, wherein P0 is the pressure sensor reading when the watertight door is locked, T1 is the shortest time required for the crew to open the watertight door, T2 is the longest time required for the crew to enter and exit the watertight door and lock the watertight door, T3 is the safe time for the crew to stay in the cabin, reading the initial value T10 of the outdoor temperature sensor and the initial value T20 of the indoor temperature sensor, and calculating the absolute value T0 of the difference between the initial indoor temperature sensor and the outdoor temperature sensor;

[0013] Reading of real-time data, including real-time reading of the pressure sensor reading P1, real-time reading of the two temperature sensors readings TE1 and TE2, real-time reading of the time the crew holds the handle T4, real-time reading of the time the crew enters and exits the cargo hold and the watertight door is not locked or opened T5, and real-time reading of the crew's stay time in the cargo hold T6, where TE1 is the reading of the temperature sensor outside the cabin, and TE2 is the reading of the temperature sensor inside the cabin;

[0014] Determine whether P1 is less than P0. If so, the control unit controls the alarm device to sound an alarm. If not, the control unit controls the alarm device not to act or to stop acting.

[0015] Determine whether |TE1-TE2| is equal to T0. If not, continue to determine whether T4 is greater than T1. If so, continue to determine the magnitude of the change in TE1 relative to T10 and the change in TE2 relative to T20. If the change in TE1 relative to T10 is greater than the change in TE2 relative to T20, it is determined that the crew member has entered the cabin from outside. If the change in TE2 relative to T20 is greater than the change in TE1 relative to T10, it is determined that the crew member has returned from inside the cabin to outside.

[0016] Determine whether |TE1-TE2| is equal to T0. If not, continue to determine whether T4 is greater than T1. If so, continue to determine whether P1 is less than P0. If so, continue to determine whether T5 is greater than T2. ​​If so, the control unit will control the alarm to operate.

[0017] Determine whether |TE1-TE2| is equal to T0. If not, continue to determine whether T4 is greater than T1. If so, continue to determine the change of TE1 relative to T10 and the change of TE2 relative to T20. If the change of TE1 relative to T10 is greater than the change of TE2 relative to T20, continue to determine whether T6 is greater than T3. If so, the control unit controls the alarm device to sound an alarm.

[0018] Optionally, the alarm system further includes a lighting unit, which is also electrically connected to the control unit, and includes lighting devices respectively arranged inside and outside the cabin, and the control method further includes:

[0019] If the crew enters the cabin from outside, the control unit controls the lighting equipment in the cabin to turn on;

[0020] If the crew returns to the outside of the cabin, the control unit controls the lighting equipment outside the cabin to turn on.

[0021] Another aspect of the present invention provides a machine-readable storage medium having a machine-executable program stored thereon, wherein the machine-executable program, when executed by a processor, implements the above-mentioned method for controlling a marine watertight door alarm system.

[0022] Another aspect of the present invention provides a computer device, comprising a memory, a processor, and a machine executable program stored in the memory and running on the processor, and when the processor executes the machine executable program, it can implement the ship watertight door alarm system control method described above.

[0023] In a marine watertight door alarm system of the present invention, by arranging a pressure sensor and a ball in the first transmission section, combined with a control unit and an alarm device, when the watertight door is in a fully locked state, the first transmission section is in a state of tilting upward and the upward tilt angle is the largest. At this time, the ball in the first transmission section will be pressed on the sensing end of the pressure sensor under the action of its own gravity. The pressure sensor senses the pressure of the ball and will feed back the signal to the control unit. The control unit determines that the watertight door is in a locked state based on the signal and controls the alarm to stop the action. When the watertight door changes from an incompletely locked state to an open state, the upward tilt angle of the first transmission section gradually decreases until it is converted to a tilted downward state. At this time, the control unit receives the signal fed back by the pressure sensor and determines that the watertight door is in an incompletely locked or open state. Whether the watertight door is in an incompletely locked or open state, the control unit will control the alarm device to operate and remind the crew, thereby reducing safety hazards. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 is a schematic diagram of a watertight door locking structure state in one embodiment of the present invention;

[0025] Figure 2 It is a schematic diagram of the position structure of the watertight door locking structure and the watertight door in one embodiment of the present invention;

[0026] Figure 3 is a schematic diagram of the position structure of a pressure sensor and a temperature sensor in one embodiment of the present invention;

[0027] Figure 4 This is a principle block diagram of a marine watertight door alarm system according to an embodiment of the present invention;

[0028] Figure 5A schematic diagram of a machine-readable storage medium according to an embodiment of the present invention;

[0029] Figure 6 is a schematic diagram of a computer device according to an embodiment of the present invention. DETAILED DESCRIPTION

[0030] Refer to the following Figures 1 to 6 To describe a marine watertight door alarm system and control method, storage medium, and computer equipment of the present invention. In the description of this embodiment, it should be understood that the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features, that is, include one or more of the features. In the description of the present invention, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined. When a feature "includes or contains" one or some of the features it covers, unless otherwise specifically described, this indicates that other features are not excluded and may further include other features.

[0031] Unless otherwise clearly defined and limited, the terms "set", "install", "connect", "connect", "fix", "couple" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. A person skilled in the art should be able to understand the specific meanings of the above terms in the present invention according to the specific circumstances.

[0032] In addition, in the description of this embodiment, the first feature being "above" or "below" the second feature may include the first and second features being in direct contact, or may include the first and second features not being in direct contact but being in contact through another feature between them. That is, in the description of this embodiment, the first feature being "above", "above", and "above" the second feature includes the first feature being directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. The first feature being "below", "below", or "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0033] In the description of the present embodiment, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0034] like Figure 1 and Figure 2 The figures shown are schematic diagrams of the locking structure of the marine watertight door. The locking structure includes two transmission components respectively arranged on the inside and outside sides of the watertight door 1, so that the watertight door 1 can be locked and opened both inside and outside the cabin. Each transmission component includes a handle 11, a first transmission section 12, a connecting rod 13, a second transmission section 14 and a third transmission section 15. The handle 11 and the first transmission section 12 are integrally arranged and rotatably arranged on the side wall of the watertight door 1 through a rotating shaft. The second transmission section 14 and the third transmission section 15 are also integrally arranged and rotatably arranged on the side wall of the watertight door 1 through a rotating shaft. The two transmission components can act synchronously, that is, the two transmission components share a rotating shaft. When the handle 11 is rotated around the rotating shaft, the first transmission section 12 will also rotate accordingly. The first transmission section 12 rotates, and the second transmission section 14 is pushed to rotate around the rotating shaft through the connecting rod 13, thereby driving the third transmission section 15 to rotate. As shown Figure 1 As shown in the solid line portion in FIG, when the handle 11 is turned to a horizontal state and extends toward an end away from the second transmission section 14 and the third transmission section 15, the watertight door 1 is in a locked state. At this time, the first transmission section 12 is in a state of tilting upward in a direction away from the rotation point. Figure 1 As shown in the dotted line part in the figure, when the handle 11 is turned to the vertical upward state, the watertight door 1 is in the open state. At this time, the first transmission section 12 is in a state of tilting downward in a direction away from the rotation point. When the handle 11 is in the process of turning from the vertical state to the horizontal state, the watertight door 1 is in an unlocked state. At this time, the first transmission section 12 gradually turns from tilting downward to tilting upward, and the upward tilt angle gradually increases.

[0035] like Figure 3 and Figure 4As shown, an embodiment of the present invention provides a marine watertight door alarm system, including a pressure sensor 2, a ball 21, an alarm device and a control unit. The pressure sensor 2 and the alarm device are both electrically connected to the control unit. The control unit is used to receive information fed back by the pressure sensor 2, and control the alarm device to perform corresponding actions according to the feedback information. The alarm device is used to alarm when the watertight door 1 is not completely locked or opened to remind the crew. The first transmission section 12 is set as a hollow structure, and the pressure sensor 2 and the ball 21 are both arranged inside the first transmission section 12. The pressure sensor 2 is arranged at a position close to the rotation point of the first transmission section 12 and the sensing end of the pressure sensor 2 is arranged on the side of the pressure sensor 2 away from the rotation point. The ball 21 is at the sensing end of the pressure sensor 2.

[0036] In daily situations, the watertight door 1 is required to be in a normally closed locked state. When the watertight door 1 is in a fully locked state, since the first transmission section 12 is in an upward tilted state with the largest upward tilt angle, the ball 21 in the first transmission section 12 will press on the sensing end of the pressure sensor 2 under the action of its own gravity. Figure 3 The dotted ball 21 in the figure is located at the position. The pressure sensor 2 senses the pressure of the ball 21 and feeds back the signal to the control unit. The control unit determines that the watertight door 1 is in a locked state based on the signal, and the alarm does not work. When the watertight door 1 changes from an incompletely locked state to an open state, the upward inclination angle of the first transmission section 12 gradually decreases until it changes to a downward inclination. At the same time, the steel ball is also Figure 3 When the dotted steel ball in the picture rolls to the position of the solid steel ball, the pressure received by the pressure sensor 2 will gradually decrease to 0 relative to the pressure in the locked state. At this time, the control unit receives the signal fed back by the pressure sensor 2 and determines whether the watertight door 1 is in an incompletely locked or open state. Whether the watertight door 1 is in an incompletely locked or open state, the control unit will control the alarm device to operate and remind the crew, thereby reducing safety hazards.

[0037] Further, the alarm system further includes a temperature sensor 3, which is electrically connected to the control unit. Each transmission assembly further includes a handle 11, on which the temperature sensor 3 is disposed. Specifically, a handle 11 is disposed inside and outside the cabin, and two temperature sensors 3 are disposed, which are disposed on the two handles 11, respectively. Optionally, the handle 11 is also configured as a hollow structure, and the temperature sensor 3 is disposed inside the handle 11.

[0038] The temperature sensor 3 is used to sense temperature changes and feed back temperature change signals to the control unit. When a crew member holds one of the handles 11, the temperature sensor 3 will sense the temperature change. The control unit can judge whether the crew member is holding the handle 11 on the outside side of the watertight door 1 or the handle 11 on the inside side of the watertight door 1 by comparing the temperature changes of the temperature sensors 3 on the two handles 11. When the control unit judges that the crew member is holding the handle 11 and the time of holding the handle 11 exceeds the first preset time, it means that there are crew members entering and exiting the cargo hold. Among them, the time of holding the handle 11 refers to the time period from the temperature sensor 3 sensing the temperature change to the temperature sensor 3 returning to the ambient temperature. The first preset time refers to the shortest time required for the crew member to open the watertight door 1. When the crew member holds the handle 11 for less than the first preset time, it means that the crew member just accidentally touches the handle 11 and does not enter or exit the cargo hold. By setting the first preset time, it can be prevented from being identified as a crew member entering and exiting due to the crew member accidentally touching the handle 11, causing misjudgment. Specifically, when the control unit determines that the crew is holding the handle 11 on the side outside the cabin, and the time of holding the handle 11 exceeds the first preset time, it means that the crew has entered the cabin from the outside. Similarly, it can also be determined that the crew has returned from the cabin to the outside. By comparing the two temperature sensors 3 for judgment, the influence of the temperature sensor 3 due to the change of ambient temperature can be avoided. At the same time, the opening and closing of the watertight door 1 is judged in combination with the pressure sensor 2. When the control unit determines that there are crew members entering and exiting the cargo hold, and determines that the watertight door 1 is not locked or opened for more than the second preset time, it means that the crew did not lock the watertight door 1 after entering and exiting the cargo hold. At this time, the control unit will control the alarm to operate. Among them, the second preset time refers to the longest time required for the crew to enter and exit the watertight door 1 and lock the watertight door 1. When the control unit determines that the crew has entered the cabin from the outside and the stay time in the cabin exceeds the third preset time, the control unit will control the alarm device to alarm to remind the outside personnel to prevent the crew from being trapped in the cabin accidentally. Among them, the staying time in the cabin refers to the time period from when the control unit determines that the crew member is holding the handle 11 on the side outside the cabin, and the time holding the handle 11 exceeds the first preset time, to when the control unit determines that the crew member is holding the handle 11 on the side inside the cabin, and the time holding the handle 11 exceeds the first preset time. The third preset time refers to the safe time for the crew member to stay in the cabin.

[0039] Furthermore, the alarm device includes an audible and visual alarm and an extended alarm panel, and the audible and visual alarm and the extended alarm panel are electrically connected to the control unit. The audible and visual alarm is arranged near the watertight door 1 to remind the nearby crew to close the watertight door 1 in time. The extended alarm panel is arranged at the ship control station, and the extended alarm panel is used to display the opening and closing status of the watertight door 1 and the entry and exit status of the crew. When the duty personnel see the information on the extended alarm panel, they can also handle the abnormal situation. The extended alarm panel can be a display screen.

[0040] Furthermore, the alarm system also includes a lighting unit, which is also electrically connected to the control unit. The lighting unit includes lighting devices respectively arranged inside and outside the cabin. When the control unit determines that the crew enters the cabin from outside the cabin, the control unit will control the lighting devices inside the cabin to turn on, and turn off the lighting devices outside the cabin. Similarly, when the control unit determines that the crew returns to the outside from inside the cabin, the control unit will control the lighting devices outside the cabin to turn on, and turn off the lighting devices inside the cabin. By connecting the lighting unit to the control unit, the control of the lighting devices is made more intelligent.

[0041] Furthermore, the alarm system also includes a navigation recording unit, which is also electrically connected to the control unit. The navigation recording unit is used to record the working signal of the control unit to provide data support for shore control and ship navigation situation analysis.

[0042] Furthermore, the ship is provided with a plurality of watertight doors, each of which is provided with a corresponding pressure sensor, a temperature sensor and an audible and visual alarm. Each pressure sensor, temperature sensor and audible and visual alarm shares a control unit and an extended alarm panel.

[0043] The present invention also provides a method for controlling a marine watertight door alarm system, based on the marine watertight door alarm system in the above embodiment. The control method comprises:

[0044] Step S1, initialization parameter setting, including setting the pressure sensor threshold value P0, setting the first preset time T1, setting the second preset time T2, setting the third preset time T3, wherein P0 is the pressure sensor reading when the watertight door is locked, T0 is the absolute value of the difference between the initial cabin temperature sensor and the cabin temperature sensor, T1 is the shortest time required for the crew to open the watertight door, T2 is the longest time required for the crew to enter and exit the watertight door and lock the watertight door, and T3 is the safe time for the crew to stay in the cabin. Read the initial value T10 of the cabin temperature sensor and the initial value T20 of the cabin temperature sensor, and calculate the absolute value T0 of the difference between the initial cabin temperature sensor and the cabin temperature sensor.

[0045] Step S2, real-time data reading, including real-time reading of the pressure sensor reading P1, real-time reading of the two temperature sensors readings TE1 and TE2, real-time reading of the time T4 that the crew holds the handle, real-time reading of the time T5 that the crew enters and exits the cargo hold and the watertight door is not locked or opened, and real-time reading of the crew's stay time T6 in the cargo hold, where TE1 is the reading of the temperature sensor outside the cabin, and TE2 is the reading of the temperature sensor inside the cabin.

[0046] Step S3, determine whether P1 is less than P0, if yes, it means that the watertight door is not completely locked or open, at this time, execute step S41, the control unit controls the alarm device to alarm, if no, it means that the watertight door is completely locked, at this time, execute step S42, the control unit controls the alarm device not to act or stop acting. That is to say, when the real-time reading of the pressure sensor is less than the pressure sensor value when the watertight door is locked, it means that the first transmission section is in the process of tilting downward, and then it can be determined that the watertight door is not completely locked or open.

[0047] Step S5, determine whether |TE1-TE2| is equal to T0, if not, then execute step S51, determine whether T4 is greater than T1, if so, it means that there are crew members entering or leaving the cargo hold. In other words, when the absolute value of the difference between the temperature sensor inside the cabin and the temperature sensor outside the cabin changes, it means that the crew member is holding one of the handles, which means that there are crew members entering or leaving the cargo hold.

[0048] Further, after indicating that a crew member enters or leaves the cargo hold, step S61 is executed to determine the size of the change in TE1 relative to T10 and the change in TE2 relative to T20. If the change in TE1 relative to T10 is greater than the change in TE2 relative to T20, it is determined that the crew member enters the cabin from outside. If the change in TE2 relative to T20 is greater than the change in TE1 relative to T10, it is determined that the crew member returns from inside to outside. In other words, when the change in the temperature sensor outside the cabin is greater than the change in the temperature sensor inside the cabin, and the time the crew member holds the handle exceeds the shortest time required for the crew member to open the watertight door, it can be determined that the crew member enters the cabin from outside. Otherwise, it can be determined that the crew member enters the cabin from outside.

[0049] Further, after indicating that there are crew members entering and exiting the cargo hold, step S7 is executed to determine whether P1 is less than P0. If so, step S71 is continued to be executed to determine whether T5 is greater than T2. ​​If so, it means that the crew members did not lock the watertight door after entering and exiting the cargo hold. At this time, step S72 is executed, and the control unit controls the alarm to operate. That is, when it is determined that there are crew members entering and exiting the cargo hold, and the time when the watertight door is opened or not locked exceeds the maximum time required for the crew members to enter and exit the watertight door and lock the watertight door, it means that the crew members did not lock the watertight door after entering and exiting the cargo hold, and then the control unit can control the alarm device to alarm to remind the crew members.

[0050] Further, after indicating that the crew has entered the cabin from outside, step S8 is continued to be executed to determine whether T6 is greater than T3. If so, it means that the crew is accidentally trapped in the cabin. At this time, step S81 is executed, and the control unit controls the alarm device to alarm. That is, when it is determined that a crew has entered the cabin and the stay time in the cabin exceeds the safe stay time, it means that the crew is accidentally trapped in the cabin, and then the control unit can control the alarm device to alarm to remind the personnel outside the cabin to take emergency measures.

[0051] Furthermore, the control method further includes:

[0052] If the crew member enters the cabin from outside, step S91 is executed, and the control unit controls the lighting equipment in the cabin to turn on.

[0053] If the crew member returns to the outside of the cabin, step S92 is executed, and the control unit controls the lighting equipment outside the cabin to turn on.

[0054] refer to Figure 5 The present invention further provides a machine-readable storage medium on which a machine executable program is stored. When the machine executable program is executed by a processor, the marine watertight door alarm system control method according to the above embodiment is implemented.

[0055] refer to Figure 6 The present invention further provides a computer device, comprising a memory, a processor, and a machine executable program stored in the memory and running on the processor. When the processor executes the machine executable program, the control method of the marine watertight door alarm system according to the above embodiment is implemented.

[0056] It should be noted that the logic and / or steps represented in the flowchart or described in other ways herein, for example, can be considered as a sequenced list of executable instructions for implementing logical functions, and can be specifically implemented in any machine-readable storage medium for use by an instruction execution system, device or equipment (such as a computer-based system, a system including a processor, or other system that can fetch instructions from an instruction execution system, device or equipment and execute instructions), or used in combination with these instruction execution systems, devices or equipment.

[0057] For the description of this embodiment, the machine-readable storage medium 400 can be any device that can contain, store, communicate, propagate or transmit a program for use with an instruction execution system, device or equipment or in conjunction with these instruction execution systems, devices or equipment. More specific examples (non-exhaustive list) of the machine-readable storage medium 400 include the following: an electrical connection portion (electronic device) with one or more wirings, a portable computer disk box (magnetic device), a random access memory (RAM), a read-only memory (ROM), an erasable and editable read-only memory (EPROM or flash memory), an optical fiber device, and a portable compact disk read-only memory (CDROM). In addition, the machine-readable storage medium 400 can even be paper or other suitable media on which the program can be printed, because the program can be obtained electronically, for example, by optically scanning the paper or other medium, followed by editing, interpreting or processing in other suitable ways as necessary, and then stored in a computer memory.

[0058] It should be understood that each part of the present invention can be implemented by hardware, software, firmware or a combination thereof. In the above embodiments, multiple steps or methods can be implemented by software or firmware stored in a memory and executed by a suitable instruction execution system.

[0059] Computer device 500 may be, for example, a server, a desktop computer, a notebook computer, a tablet computer, or a smart phone. In some examples, computer device 500 may be a cloud computing node. Computer device 500 may be described in the general context of computer system executable instructions (such as program modules) executed by a computer system. Typically, a program module may include routines, programs, target programs, components, logic, data structures, etc. that perform specific tasks or implement specific abstract data types. Computer device 500 may be implemented in a distributed cloud computing environment where remote processing devices linked via a communication network perform tasks. In a distributed cloud computing environment, program modules may be located on a local or remote computing system storage medium including a storage device.

[0060] The computer device 500 may include a processor 510 adapted to execute stored instructions, and a memory 520 providing temporary storage space for the operation of the instructions during operation. The processor 510 may be a single-core processor, a multi-core processor, a computing cluster, or any number of other configurations. The memory 520 may include a random access memory (RAM), a read-only memory, a flash memory, or any other suitable storage system.

[0061] The processor 510 may be connected to an I / O interface (input / output interface) suitable for connecting the computer device 500 to one or more I / O devices (input / output devices) through a system interconnect (e.g., PCI, PCI-Express, etc.). The I / O devices may include, for example, a keyboard and a pointing device, wherein the pointing device may include a touch pad or a touch screen, etc. The I / O devices may be built-in components of the computer device 500, or may be devices externally connected to the computing device.

[0062] Processor 510 can also be linked to a display interface suitable for connecting computer device 500 to a display device through a system interconnection. Display device can include a display screen as a built-in component of computer device 500. Display device can also include a computer monitor, a television or a projector, etc., which are externally connected to computer device 500. In addition, a network interface controller (NIC) can be suitable for connecting computer device 500 to a network through a system interconnection. In some embodiments, NIC can use any suitable interface or protocol (such as Internet Small Computer System Interface, etc.) to transmit data. The network can be a cellular network, a radio network, a wide area network (WAN), a local area network (LAN) or the Internet, etc. A remote device can be connected to a computing device through a network.

[0063] The flow chart provided by the present embodiment is not intended to indicate that the operation of the method will be performed in any particular order, or that all operations of the method are included in all every case. In addition, the method may include additional operations. Within the scope of the technical thinking provided by the present embodiment method, additional changes may be made to the above method.

[0064] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the art may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by a person of ordinary skill in the art without departing from the spirit and technical concept disclosed by the present invention shall still be covered by the claims of the present invention.

Claims

1. A marine watertight door alarm system, based on a watertight door locking structure, wherein the locking structure comprises two transmission components respectively arranged on one side inside and one side outside the watertight door cabin, the two transmission components can act synchronously, each of the transmission components comprises a first transmission section, the first transmission section is arranged to be rotatable around one end, the first transmission section is in a state of being inclined upward in a direction away from the rotation point when the watertight door is locked and in a state of being inclined downward in a direction away from the rotation point when the watertight door is opened, the upward inclination angle of the first transmission section gradually increases from the watertight door opening state to the locked state, and is characterized in that: The alarm system includes a pressure sensor, a ball, an alarm device and a control unit, the pressure sensor and the alarm device are both electrically connected to the control unit, the first transmission section is configured as a hollow structure, the pressure sensor and the ball are both configured inside the first transmission section, the pressure sensor is configured at a position of the first transmission section close to a rotation point and the sensing end of the pressure sensor is configured on a side of the pressure sensor away from the rotation point, and the ball is at the sensing end of the pressure sensor.

2. The marine watertight door alarm system according to claim 1, characterized in that: The alarm system further includes a temperature sensor, which is electrically connected to the control unit. Each of the transmission components further includes a handle, and the temperature sensor is arranged on the handle.

3. The marine watertight door alarm system according to claim 1, characterized in that: The alarm device comprises an audible and visual alarm, which is electrically connected to the control unit and is arranged near the watertight door.

4. The marine watertight door alarm system according to claim 3, characterized in that: The alarm device also includes an extended alarm panel, which is also electrically connected to the control unit. The extended alarm panel is arranged at the ship control station and is used to display the opening and closing status of the watertight door and the entry and exit status of the crew.

5. The marine watertight door alarm system according to claim 1, characterized in that: The alarm system further comprises a lighting unit, which is also electrically connected to the control unit. The lighting unit comprises lighting devices respectively arranged inside and outside the cabin.

6. The marine watertight door alarm system according to claim 1, characterized in that: The alarm system further comprises a navigation recording unit, which is also electrically connected to the control unit and is used to record a working signal of the control unit.

7. A method for controlling a marine watertight door alarm system, characterized in that: Based on the marine watertight door alarm system according to claim 2, the control method comprises: Initialization parameter setting, including setting the pressure sensor threshold value P0, setting the first preset time T1, setting the second preset time T2, setting the third preset time T3, wherein P0 is the pressure sensor reading when the watertight door is locked, T1 is the shortest time required for the crew to open the watertight door, T2 is the longest time required for the crew to enter and exit the watertight door and lock the watertight door, T3 is the safe time for the crew to stay in the cabin, reading the initial value T10 of the outdoor temperature sensor and the initial value T20 of the indoor temperature sensor, and calculating the absolute value T0 of the difference between the initial indoor temperature sensor and the outdoor temperature sensor; Reading of real-time data, including real-time reading of the pressure sensor reading P1, real-time reading of the two temperature sensors readings TE1 and TE2, real-time reading of the time the crew holds the handle T4, real-time reading of the time the crew enters and exits the cargo hold and the watertight door is not locked or opened T5, and real-time reading of the crew's stay time in the cargo hold T6, where TE1 is the reading of the temperature sensor outside the cabin, and TE2 is the reading of the temperature sensor inside the cabin; Determine whether P1 is less than P0. If so, the control unit controls the alarm device to sound an alarm. If not, the control unit controls the alarm device not to act or to stop acting. Determine whether |TE1-TE2| is equal to T0. If not, continue to determine whether T4 is greater than T1. If so, continue to determine the magnitude of the change in TE1 relative to T10 and the change in TE2 relative to T20. If the change in TE1 relative to T10 is greater than the change in TE2 relative to T20, it is determined that the crew member has entered the cabin from outside. If the change in TE2 relative to T20 is greater than the change in TE1 relative to T10, it is determined that the crew member has returned from inside the cabin to outside. Determine whether |TE1-TE2| is equal to T0. If not, continue to determine whether T4 is greater than T1. If so, continue to determine whether P1 is less than P0. If so, continue to determine whether T5 is greater than T2. ​​If so, the control unit will control the alarm to operate. Determine whether |TE1-TE2| is equal to T0. If not, continue to determine whether T4 is greater than T1. If so, continue to determine the change of TE1 relative to T10 and the change of TE2 relative to T20. If the change of TE1 relative to T10 is greater than the change of TE2 relative to T20, continue to determine whether T6 is greater than T3. If so, the control unit controls the alarm device to sound an alarm.

8. The method for controlling a marine watertight door alarm system according to claim 7, characterized in that: The alarm system further includes a lighting unit, which is also electrically connected to the control unit. The lighting unit includes lighting devices respectively arranged inside and outside the cabin. The control method further includes: If the crew enters the cabin from outside, the control unit controls the lighting equipment in the cabin to turn on; If the crew returns to the outside of the cabin, the control unit controls the lighting equipment outside the cabin to turn on.

9. A machine-readable storage medium, characterized in that: A machine executable program is stored thereon, and when the machine executable program is executed by a processor, the method for controlling a marine watertight door alarm system according to any one of claims 7 or 8 is implemented.

10. A computer device, characterized in that: The invention comprises a memory, a processor and a machine executable program stored in the memory and running on the processor, and the processor implements the ship watertight door alarm system control method according to any one of claims 7 or 8 when executing the machine executable program.

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