Boat life-saving equipment storage system and control method

Abstract

The present application belongs to the technical field of ship lifesaving equipment, and relates to a ship lifesaving equipment storage system and a control method. The system comprises a cabinet body fixedly installed in a cabin of a ship and provided with an access opening at the front side, a cabinet door opened when receiving a dispersing trigger signal, a storage mechanism arranged in the cabinet body for accommodating lifesaving equipment, an access detection device arranged on the cabinet body for detecting the in-place state of the lifesaving equipment and obtaining remaining quantity information, an image acquisition device arranged at the front edge of the top of the cabinet body for collecting images of personnel in a preset detection area in front and obtaining personnel state parameters according to the images, an information output device arranged on the outer surface of the cabinet body for presenting information to dispersing personnel and crew, and a controller connected with the above-mentioned devices respectively for jointly determining the remaining quantity information and the personnel state parameters and driving the information output device to output inventory state information and dispersing guide information. The present application significantly improves the efficiency and safety of ship emergency dispersing.

Description

Technical Field

[0001] This invention relates to the field of marine lifesaving equipment technology, and in particular to a ship lifesaving equipment storage system and control method. Background Technology

[0002] Lifesaving equipment is a collective term for specialized equipment and accessories used by ships for self-rescue and rescue when rescuing people who have fallen into the water or when the ship is in distress. It mainly includes lifeboats, life rafts, life floats, life jackets, life rings, distress signal generators, and their associated launching and lowering machinery. Lifesaving equipment is one of the most important safety facilities on a ship. Whether the lifesaving equipment is in good working order and can be quickly accessed during a maritime accident directly affects the safety of the people on board.

[0003] During emergency evacuation from ships and boats, passengers typically need to retrieve and don their personal life-saving equipment from the storage system located inside the cabin within a very short time before being orderly evacuated to the assembly station. Therefore, as the final carrier for the storage and distribution of life-saving equipment, the structure and functional configuration of the life-saving equipment storage system inside the ship's cabin directly affect the efficiency of equipment retrieval and the order of the evacuation site.

[0004] Existing lifesaving equipment storage systems in ship cabins typically employ enclosed or semi-enclosed cabinet structures, with lifesaving equipment stored in layers via partitions. In an emergency, passengers can open the cabinets to retrieve the equipment themselves. The primary function of these systems is passive storage. In actual large-scale emergency evacuations, this can easily lead to an imbalance where large numbers of passengers gather in front of some equipment while others remain unused, impacting the overall efficiency of lifesaving equipment retrieval and evacuation safety. Summary of the Invention

[0005] In view of this, the present invention provides a system and control method for storing lifesaving equipment on boats, in order to improve the efficiency of access to lifesaving equipment and the level of on-site management during emergency evacuation of boats.

[0006] The first aspect of this invention provides a ship and boat lifesaving equipment storage system, including...

[0007] The cabinet is fixedly installed inside the cabin of the boat, and has an access opening on the front side;

[0008] A cabinet door is located at the access opening and is used to open when an evacuation trigger signal is received;

[0009] Storage mechanism, located inside the cabinet, is used to house life-saving equipment;

[0010] A detection device is installed on the cabinet to detect the presence status of the life-saving equipment and obtain information on the remaining quantity accordingly.

[0011] An image acquisition device is installed at the top front edge of the cabinet, with a field of view covering a preset detection area in front of the cabinet. It is used to acquire images of people within the preset detection area and obtain personnel status parameters accordingly. The personnel status parameters include at least the total number of people in the detection area and the number of people waiting in line.

[0012] An information output device, located on the outer surface of the cabinet, is used to present information to evacuees and crew members;

[0013] The controller is connected to the detection device, the image acquisition device, and the information output device, respectively, and is used to jointly determine the remaining quantity information and the personnel status parameters, and drive the information output device to output inventory status information and evacuation guidance information according to the determination result.

[0014] Preferably, the retrieval detection device includes: a radio frequency identification (RFID) tag, which is installed on each piece of lifesaving equipment and has a unique identification code; an access identification antenna, which is installed at the retrieval opening with its radiating surface facing the center of the retrieval opening to form an RFID zone when the lifesaving equipment enters or exits the cabinet; an inventory antenna, which is installed on the inner wall of the cabinet and whose radiating direction covers the storage mechanism area, for scanning the RFID tags on the lifesaving equipment in the cabinet; and an RFID reader / writer, which is connected to the access identification antenna and the inventory antenna, respectively.

[0015] Preferably, the access identification antenna is a microstrip antenna panel, which is disposed on both sides of the door frame with the access opening, and is flush with the inner wall of the door frame column so that it does not protrude from the inner surface of the door frame.

[0016] Preferably, the controller includes: an inventory determination module, used to determine the remaining quantity of life-saving equipment in the cabinet based on the detection result of the retrieval detection device; a comprehensive judgment module, used to jointly judge the personnel status parameters and the remaining quantity and generate trigger conditions; and a guidance output module, used to drive the information output device to output inventory status information and evacuation guidance information according to the trigger conditions.

[0017] Preferably, it further includes: a pressure-sensing base plate, laid on the surface of each storage layer in the storage mechanism, located at the bottom of the life-saving equipment placement area, wherein the pressure-sensing base plate is a flexible substrate including a thin-film pressure sensor array; the pressure-sensing base plate and the retrieval detection device constitute a dual-redundant inventory sensing mechanism; the inventory determination module is also used to perform real-time cross-verification of the in-situ weight information of the pressure-sensing base plate with the detection result of the retrieval detection device, and when the two results are inconsistent, trigger the retrieval detection device to perform an immediate supplementary scan to arbitrate the true state, and generate an abnormal alarm signal when continuous comparison is still inconsistent.

[0018] Preferably, the image acquisition device includes a camera and an image analysis module. The image analysis module includes: a target detection submodule, used to acquire the total number of people m1 in the detection area; a dwelling determination submodule, used to track the target trajectory and determine the number of people whose continuous dwelling time exceeds a preset dwelling threshold T1 and who are facing the cabinet, to acquire the number of people waiting in line m2; and an environment adaptive processing submodule, used to activate automatic gain and contrast enhancement under low light conditions, use a defogging algorithm to preprocess the image in a smoky environment, and filter the image jitter caused by ship vibration based on inter-frame motion compensation.

[0019] Preferably, the comprehensive judgment module includes: a density judgment submodule, used to calculate the personnel density ρ=m1 / A based on the total number of people m1 and the preset detection area A, and generate a congestion judgment condition when ρ is not less than a preset density threshold and the duration is not less than a preset congestion time limit; a supply and demand matching submodule, used to generate an inventory shortage judgment condition when the number of people waiting in line m2 is not less than α·n, where n is the remaining quantity and α is a preset proportional coefficient; and a de-jitter verification submodule, used to use a time window confirmation mechanism for each judgment condition to suppress false triggering.

[0020] Preferably, the guidance output module issues a judgment instruction to the information output device according to the following rules: when only the insufficient inventory judgment condition is met, the display screen of the information output device displays the remaining quantity and diversion direction guidance, and the indicator light of the information output device switches to the inventory shortage indication state; when only the congestion judgment condition is met, the speaker of the information output device plays an evacuation prompt, the indicator light switches to the safety warning state, and an alarm is simultaneously sent to the crew terminal; when both the congestion judgment condition and the insufficient inventory judgment condition are met, the speaker plays a safety warning, the display screen displays diversion guidance information, the indicator light switches to the safety warning state, and an alarm is sent to the crew terminal.

[0021] Preferably, the system also includes a central coordination module, which is connected to the controllers of multiple storage systems distributed in various compartments of the vessel via a shipboard communication network. The central coordination module includes: a data collection unit for collecting the remaining inventory and personnel status parameters reported by each storage system; a supply and demand calculation unit for calculating the resource supply and demand ratio of each storage system; and a diversion scheduling unit for selecting the storage system with the highest resource supply and demand ratio from adjacent storage systems as the diversion target when the resource supply and demand ratio of a certain storage system is detected to be lower than a preset threshold, and issuing a coordination scheduling instruction including the location of the diversion target to the controller of the storage system with supply and demand imbalance to update the guidance content of its information output device.

[0022] A second aspect of the present invention provides a control method based on the aforementioned boat lifesaving equipment storage system, comprising the following steps:

[0023] S1. In response to the emergency evacuation trigger signal, the controller opens the control cabinet door and starts the retrieval detection device, image acquisition device and information output device to enter the working state.

[0024] S2. The detection device detects the position status of each life-saving device in the cabinet at a preset scanning cycle, and the controller determines the remaining number n of life-saving devices accordingly.

[0025] S3. The image acquisition device acquires images of people within the detection area and analyzes and obtains a set of personnel status parameters, including at least the total number of people m1 and the number of people waiting in line m2.

[0026] S4. The controller performs a comprehensive judgment based on the remaining quantity n and the set of personnel status parameters, including: calculating the personnel density ρ=m1 / A, where A is the area of ​​the preset detection area; when ρ is not less than the density threshold and the duration is not less than the congestion time limit, it is judged as a congestion state; when m2 is not less than α·n, it is judged as insufficient inventory supply; a time window confirmation mechanism is adopted for each judgment condition to suppress false triggering.

[0027] S5. The controller controls the information output device to output inventory status information and evacuation guidance information according to the priority rules based on the judgment result;

[0028] S6. Repeat steps S2 to S5 in a cyclical manner until an evacuation end signal is received.

[0029] The present invention has the following beneficial effects:

[0030] (1) By using a detection device to detect the status of each life-saving equipment in the cabinet in real time, the storage system can automatically obtain and present the remaining quantity of the current life-saving equipment, providing intuitive inventory status information for evacuees and crew members.

[0031] (2) The number of people, their orientation, dwell time and clothing status in the retrieval area are quantitatively analyzed by the image acquisition device and the image analysis module, so that the storage system has the ability to perceive the gathering of people in front of the cabinet and the retrieval process.

[0032] (3) The environmental adaptive processing submodule performs image preprocessing for special ship environmental conditions such as low light, smoke and ship vibration, which improves the robustness of visual recognition in actual ship emergency scenarios.

[0033] (4) The remaining inventory quantity and personnel status parameters are coupled and judged by the comprehensive judgment module. The guidance output module schedules the display screen, speaker and indicator light differently according to different judgment conditions. When the inventory is insufficient, the display screen and indicator light are driven by visual guidance. When there is congestion, the speaker and indicator light are driven by sound warning. When both are used concurrently, all hardware is linked, so that the storage system is transformed from a passive storage container into an active emergency equipment node with perception, judgment and hierarchical guidance capabilities.

[0034] (5) When configuring the pressure sensing base plate, it forms a dual-redundant inventory sensing mechanism with the retrieval detection device. Real-time cross-validation and instant supplementary scanning arbitration improve the credibility of inventory data in emergency high-pressure scenarios.

[0035] (6) The central coordination module collects inventory and personnel status data of each storage system through the shipborne communication network, calculates the resource supply and demand ratio in real time, and issues cross-device diversion and scheduling instructions when there is a local imbalance, so that multiple storage systems with dispersed configurations can form a collaborative network and realize the global dynamic balance of life-saving equipment resources at the ship level.

[0036] (7) The guidance output only takes effect after receiving the evacuation trigger signal and does not impose any mandatory constraints on the passenger's access behavior, so as to avoid hindering self-rescue in an emergency.

[0037] This invention integrates the perception of crowd gathering behavior in the retrieval area with the storage and retrieval control and guidance output of the boat rescue equipment storage system in a closed loop, forming an integrated emergency distribution system of "perception-judgment-guidance" with crowd detection as the trigger source, dual redundant inventory perception as the support, and dynamic guidance panel as the output end. This transforms the boat rescue equipment storage system from a passive storage container into an active emergency guidance equipment node, significantly improving the efficiency and safety of boat emergency evacuation. Attached Figure Description

[0038] To more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0039] Figure 1 This is a schematic diagram of the overall structure of the boat lifesaving equipment storage system according to Embodiment 1 of the present invention;

[0040] Figure 2 This is a schematic diagram of the structure of the detection device according to Embodiment 1 of the present invention;

[0041] Figure 3 This is a flowchart of the control method for the boat lifesaving equipment storage system according to Embodiment 3 of the present invention;

[0042] Figure 4 This is a schematic diagram of the architecture of a boat lifesaving equipment storage system according to Embodiment 1 of the present invention;

[0043] Figure 5 This is a schematic diagram of the system architecture of Embodiment 2 of the present invention.

[0044] The labels in the diagram are as follows: 1—cabinet; 2—cabinet door; 3—storage tray; 4—lifesaving equipment; 5—information output device; 6—image acquisition device; 7—retrieval detection device; 71—RFID tag; 72—entry / exit identification antenna; 73—inventory antenna; 74—RFID reader / writer; 8—controller; 9—pressure sensing base plate. Detailed Implementation

[0045] In the following description, specific details such as particular system architectures and techniques are set forth for illustrative purposes and not for limitation, in order to provide a thorough understanding of the embodiments of the invention. However, those skilled in the art will understand that the invention can be implemented in other embodiments without these specific details. In other instances, detailed descriptions of well-known systems, apparatuses, circuits, and methods are omitted so as not to obscure the description of the invention with unnecessary detail.

[0046] Example 1

[0047] like Figure 1 As shown, this embodiment provides a boat lifesaving equipment storage system, which includes: a cabinet 1, a cabinet door 2, a storage mechanism, lifesaving equipment 4, an information output device 5, an image acquisition device 6, a retrieval detection device 7, a controller 8, and a pressure-sensing base plate 9. The various units are connected via electrical / signal connections, and the controller 8 serves as the central processing and communication hub for all sensing and execution units.

[0048] Cabinet 1 is fixedly installed on the interior wall or deck of the ship's cabin. It is a closed or semi-closed box structure with an access opening on the front. Cabinet 1 is made of materials that comply with ship fire protection regulations and has corrosion resistance and flame retardant properties suitable for the ship's environment.

[0049] Cabinet door 2 is located at the access opening and is connected to cabinet body 1 via hinges. Cabinet door 2 is normally closed and locked to protect the life-saving equipment inside the cabinet. When an evacuation trigger signal is received, it automatically opens, for example, driven by an electromagnetic lock release mechanism, so that passengers can quickly access the life-saving equipment in an emergency.

[0050] The storage mechanism includes multiple storage trays 3 spaced apart along the height of the cabinet 1, forming a multi-layer storage area. Each storage tray 3 is used to place at least one piece of life-saving equipment 4. The spacing between the storage trays 3 should meet the requirements for normal placement and smooth retrieval of the life-saving equipment.

[0051] A pressure-sensing base plate 9 is laid on the surface of each storage layer of the storage tray 3, located at the bottom of the area where the life-saving equipment 4 is placed. The pressure-sensing base plate 9 is a flexible substrate including a thin-film pressure sensor array. The effective sensing area of ​​each thin-film pressure sensor is adapted to the bottom projected area of ​​a single life-saving equipment, ensuring that the position and weight information of the life-saving equipment at each placement location can be independently detected. Preferably, the thin-film pressure sensor array is manufactured using flexible printed circuit board technology, with a thickness not exceeding 2mm, to avoid affecting the stable placement of the life-saving equipment. The pressure-sensing base plate 9 is connected to the controller 8 via a flexible ribbon cable or wirelessly, reporting the pressure values ​​of each sensor location to the controller at a preset interval, for example, 0.5s–2s.

[0052] The detection device 7 is used to detect the presence status of each piece of life-saving equipment 4 inside the cabinet and to obtain information on the remaining quantity. For example... Figure 2 As shown, in this embodiment, the detection device 7 is implemented using radio frequency identification (RFID) technology and includes the following four components:

[0053] Radio frequency identification (RFID) tags 71 are affixed to each piece of lifesaving equipment 4 and have a unique identification code. The RFID tags 71 are preferably passive button-type RFID tags, sewn onto the shoulder straps or collars of the lifesaving equipment 4. The tags should possess engineering characteristics such as waterproofing, moisture resistance, washability, and abrasion resistance to adapt to the marine environment. Each lifesaving equipment tag has a unique identifier (UID) that can be linked to a backend database for traceability management.

[0054] An access identification antenna 72 is located at the access opening, with its radiating surface facing the center of the opening, forming a radio frequency identification (RFID) zone for the life-saving equipment 4 when it enters or exits the cabinet 1. This antenna arrangement ensures that when passengers retrieve or place life-saving equipment from the cabinet, the RFID tag 71 will inevitably pass through the antenna coverage area, forming a mandatory identification zone. This significantly reduces the risk of missed readings due to stacking and achieves reliable entry and exit event counting. Preferably, the access identification antenna 72 is a microstrip antenna panel, located on both sides of the door frame of the access opening, flush with the inner wall of the door frame pillar so that it does not protrude from the inner surface of the door frame. This ensures both uniform antenna radiation coverage and prevents the antenna from protruding and obstructing normal access to the life-saving equipment.

[0055] The inventory antenna 73 is located on the inner wall of the cabinet 1, and its radiation direction covers the storage area. It is used to periodically scan the radio frequency identification tags 71 on the life-saving equipment 4 inside the cabinet. This serves as a supplementary verification to the scanning of the entry and exit identification antenna 72, so as to improve the reliability of reading and to be used for inventory correction, such as to prevent missed readings at the door or return of items that are not detected abnormally.

[0056] The RFID reader 74 is connected to both the access identification antenna 72 and the inventory antenna 73, and polls and switches between the connected antennas to perform ordered scanning. To reduce costs and improve reliability, a "one reader + multiple antennas" architecture is preferred: the antennas are simple structures made of PCB or metal plates, resulting in low cost; the reader is an industrial-grade module, placed at the bottom or top of the cabinet for easy wiring and heat dissipation. The RFID reader 74 is connected to the controller 8 via a communication interface, reporting the identified tag UID and read time to the controller 8.

[0057] Image acquisition device 6 is located at the top front edge of cabinet 1, covering a pre-defined detection area in front of cabinet 1 (hereinafter referred to as the "detection area"). The image acquisition device 6 includes a camera and an image analysis module. The camera is used to acquire real-time images of personnel within the detection area during emergency evacuation, and the image analysis module is used to preprocess, detect targets, and perform status recognition on the acquired images. The image acquisition frequency, resolution, and on-site processing capabilities should be configured with a trade-off between cost and real-time performance during implementation.

[0058] The information output device 5 is located in a prominent position on the outer surface of the cabinet 1 (e.g., on the outside of the cabinet door or above the front edge of the cabinet), and includes a display screen, a speaker, indicator lights, a display control module, and an audio-visual indication module. The display control module receives judgment commands from the controller 8 and drives the display screen to display inventory quantity, directional arrows, and text guidance content. The audio-visual indication module drives the speaker to emit voice prompts or warning sounds and drives the indicator lights to indicate the current status with different colors or flashing frequencies (solid yellow indicates low inventory, flashing red indicates a safety warning). The indication statements should be concise and readable (e.g., cabinet number + remaining quantity + directional information), supplemented with colors or arrows to reduce passenger cognitive load.

[0059] like Figure 4 As shown, the controller 8 is located inside the cabinet 1 and is electrically connected to the pressure sensing base plate 9, the retrieval detection device 7, the image acquisition device 6, and the information output device 5. The controller 8 serves as the central processing and communication hub for all sensing and execution units, and includes the following functional modules:

[0060] The inventory determination module is used to determine the remaining quantity n of life-saving equipment 4 in the cabinet based on the detection results of the retrieval detection device 7. Specifically, the inventory determination module reads the tag list reported most recently by the RFID reader 74 and counts the current number of tags in the cabinet, which is n. When configuring the pressure-sensing base plate 9, the pressure-sensing base plate 9 and the retrieval detection device 7 form a dual-redundant inventory sensing mechanism. Among them, the pressure-sensing base plate 9 provides in-situ detection status-level sensing based on physical weight, with fast response speed and immunity to radio frequency interference, while the RFID system in the retrieval detection device 7 provides accurate identification-level sensing based on tag identity, which can distinguish specific life-saving equipment individuals. The inventory determination module synchronously reads two sensing data streams at a preset period Δt for real-time cross-verification. When the pressure sensor base plate indicates an item is present at a certain location but the RFID tag is not detected, or when the RFID tag is detected but the pressure sensor base plate does not detect weight, the inventory determination module determines that the two results are inconsistent and immediately triggers the RFID reader 74 to perform an immediate supplementary scan. This involves repeatedly reading the target area with higher power or a longer scanning time to eliminate the possibility of a single frame missed by the RFID (Radio Frequency Identification) reader. If the two data streams remain inconsistent after a preset number of supplementary scans, such as three, the inventory determination module generates an abnormal alarm signal and reports it to the central coordination module and crew terminal via the communication interface, indicating possible abnormalities such as damaged tags, misplaced non-standard items, or sensor malfunction.

[0061] The comprehensive judgment module is used to jointly judge the personnel status parameters (the personnel status parameters include at least the total number of people m1 in the detection area and the number of people waiting in the queue m2) with the remaining quantity and generate trigger conditions, including the following judgment logic:

[0062] Density Calculation and Congestion Determination: The population density ρ = m1 / A is calculated based on the area A of the detection zone. When ρ is not less than the preset density threshold ρ0, for example, ρ0 = 4 people / m², and the congestion duration is not less than the preset congestion time limit Td, for example, Td = 2 minutes, the detection zone is determined to be in a significantly congested state, and a congestion warning signal is generated.

[0063] Queuing and inventory supply and demand matching determination: When the number of people waiting in the queue m2 is not less than α·n, where n is the remaining number of life-saving equipment in the cabinet and α is a preset proportional coefficient, such as α=0.8, it is determined that the current storage system's resource supply does not meet the queuing demand, and a diversion guidance trigger signal is generated.

[0064] Time window confirmation and jitter reduction: The integrated judgment module uses time window confirmation for the input and output of each judgment condition. For example, it triggers only when two or more consecutive sampling results are consistent and processes the minimum trigger interval to reduce false triggering caused by instantaneous noise or single frame misidentification.

[0065] The guidance output module is used to send a judgment command to the information output device 5 according to the triggering conditions. Based on the received judgment command, the information output device 5 schedules the display screen, speaker, and indicator lights according to the following rules:

[0066] When only the insufficient inventory condition is met: the display screen shows the remaining quantity and the direction of flow guidance (e.g., "3 items remaining in this cabinet, please go to cabinet 1 →" or an arrow pointing to an empty cabinet), and the indicator light switches to solid yellow to indicate that inventory is tight. This mode is mainly visual guidance, guiding evacuees to other storage systems on their own.

[0067] When only the congestion criteria are met: the loudspeaker plays an audio evacuation prompt (e.g., "This area is densely populated, please disperse to adjacent areas"), the indicator light switches to flashing red to indicate a safety warning, and an alarm is simultaneously sent to the crew terminal via the communication interface. This mode primarily relies on sound penetration and is used for emergency evacuation of people in front of the evacuation cabinet.

[0068] When both the congestion and insufficient inventory conditions are met simultaneously: a safety warning voice (highest priority) is played through the speaker, diversion guidance information is displayed on the screen, the indicator light flashes red, and an alarm is sent to the crew terminal.

[0069] Information output device 5 does not employ any coercive measures to restrict passengers' access to it, in order to avoid hindering self-rescue in an emergency. Guidance output is only active when the system is in emergency evacuation mode, triggered by a signal from the vessel's command center or main control system.

[0070] Image acquisition device 6 includes a camera and an image analysis module, the image analysis module including the following sub-modules:

[0071] The target detection submodule is used to obtain the total number of people m1 in the detection area. The specific implementation of the target detection submodule can adopt a deep learning-based target detection algorithm, such as the YOLO series or SSD network, to detect human targets in the detection area in real time and output bounding boxes and confidence scores. The total number of people m1 in the area is calculated based on the number of valid bounding boxes.

[0072] The dwell time determination submodule is used to track the target trajectory and determine the number of people whose continuous dwell time exceeds a preset dwell time threshold T1 and who are facing the cabinet 1, so as to obtain the number of people waiting in line m2. Specifically, if a target stays in the detection area for a continuous period of ≥T1, for example, T1=10s, and its head or chest is facing the cabinet, it is considered to be waiting in line. The dwell time determination submodule is based on a multi-target tracking algorithm, such as DeepSORT or ByteTrack, to establish a tracking trajectory for each human target in the detection area and record the continuous dwell time of each target in the detection area. When the continuous dwell time of a target exceeds the preset dwell time threshold T1 and is determined by the orientation determination submodule to be facing the cabinet, it is included in the number of people waiting in line m2.

[0073] The wearability recognition submodule is used to determine the wearing status of personnel based on the outline features of the life-saving equipment 4, reflective markings, or specific color areas, to obtain the number of people (m3) already wearing the equipment within the area. The wearability recognition submodule employs semantic segmentation or instance segmentation methods to perform pixel-level classification on each detected human target area, identifying the outline features of the life-saving equipment (such as the specific shape of the life jacket), reflective marking areas, or high-saturation specific color areas (such as orange or yellow). When the area proportion of the aforementioned feature areas exceeds a preset threshold, it is determined that the person has completed wearing the equipment. m3 can be used to calculate the wearing completion rate β = m3 / m1 to evaluate the wearing completion rate of the life-saving equipment within the detection area. When the wearing completion rate is lower than a preset threshold and the number of people in the area exceeds a preset lower limit, a wearing assistance request can be sent to the crew terminal, prompting the crew to go to the site to guide passengers in completing the wearing process. The application of the above m3 parameter can be selectively enabled according to the actual configuration requirements and computing power conditions of the vessel.

[0074] The orientation determination submodule is used to determine the orientation of personnel through human posture estimation to obtain the number of unwearing personnel (m4) facing cabinet 1. m4 can be used to assess the scale of immediate retrieval demand in front of the cabinet. The m4 parameter can be selectively enabled. The orientation determination submodule uses human posture estimation algorithms, such as OpenPose or HRNet, to extract human key points (head, shoulders, chest). It determines the orientation of personnel based on the direction of the normal vector connecting the head and shoulders. When the normal vector points towards the cabinet (the angle between the normal vector and the normal vector of the cabinet's front is less than a preset angle threshold), the personnel are determined to be facing the cabinet. The dwell time determination submodule can call the determination result of the orientation determination submodule as a joint determination condition when determining the number of people waiting in line (m2). That is, a target is only included in the number of people waiting in line (m2) if the continuous dwell time exceeds the preset dwell time threshold (T1) and the orientation determination submodule determines that the target is facing the cabinet.

[0075] The environment adaptive processing submodule is designed to address the unique conditions of the ship's environment: it activates automatic gain and contrast enhancement under low-light conditions; it employs a dehazing algorithm for image preprocessing in smoky environments; and it filters image jitter caused by ship vibration based on inter-frame motion compensation. The environment adaptive processing submodule includes three preprocessing strategies: under low-light conditions, it uses adaptive histogram equalization (such as the CLAHE algorithm) to enhance image contrast and adjust the camera's automatic gain parameters; in smoky environments, it uses a dehazing algorithm based on dark channel priors or atmospheric scattering models to restore image clarity; and for image jitter caused by ship vibration, it uses a motion compensation algorithm based on inter-frame optical flow estimation for image stabilization.

[0076] For engineering reliability, controller 8 can maintain a local state machine, including the following working states: standby mode, emergency working mode, prompting mode, and reset mode. Each state has clear entry / exit conditions and timeout protection to ensure that the system will not continuously display error prompts when communication or algorithm is abnormal.

[0077] Example 2

[0078] Based on Embodiment 1, this embodiment adds a central coordination module, such as... Figure 5 As shown, the central coordination module communicates with the controllers 8 of multiple storage systems distributed throughout the ship's compartments via a shipboard communication network such as Ethernet or a dedicated ship communication bus, forming a ship-level emergency distribution system for lifesaving equipment.

[0079] The central coordination module includes the following functional units:

[0080] The data collection unit is used to collect the remaining inventory quantity n and personnel status parameters m1 and m2 reported by each storage system. Data collection is performed synchronously with a preset period, such as the sampling period Δt of each device, to ensure that the central coordination module has a grasp of the real-time status of all storage systems on the ship.

[0081] The supply and demand calculation unit is used to calculate the resource supply and demand ratio R of each device based on the remaining inventory quantity n and the number of people waiting in line m2 of each storage system. When a device has a number of people waiting in line m2>0, R=n / m2; when a device has no people waiting in line m2=0, R takes the preset maximum value, indicating that the device has sufficient resources and no queuing pressure.

[0082] The diversion scheduling unit is used to implement cross-device diversion scheduling globally. When it detects that the resource supply-demand ratio R of a certain storage system designated as device A is lower than a preset threshold, for example, a resource supply-demand ratio threshold of 1.0, meaning the number of people queuing has exceeded or equaled the inventory, the diversion scheduling unit selects the adjacent storage system with the highest resource supply-demand ratio as device B as the diversion target and issues a coordinated scheduling instruction including the location of the diversion target to the controller 8 of device A to update the guidance content of device A's information output device 5, for example, displaying "Please go to cabinet 2 →". The coordinated scheduling instruction has a higher priority than the guidance information generated by device A's local comprehensive judgment module to ensure that the diversion decision is based on global optimization rather than local judgment. The adjacency relationship between adjacent storage systems is defined by a preset topological adjacency list, which is usually a storage system on the same deck or in an adjacent compartment. The topological adjacency list is pre-configured according to the ship's cabin layout during system deployment.

[0083] The overall workflow of Example 2 is as follows: In emergency operating mode, each storage system executes local sensing to judgment loop steps S2-S5 according to a cycle Δt, simultaneously reporting the remaining inventory quantity and personnel status parameters to the central coordination module. The central coordination module continuously calculates the resource supply-demand ratio of all devices on the ship, selecting the optimal diversion target and issuing coordination and scheduling instructions when there is a local supply-demand imbalance. The information output devices of each device output information based on local judgment or the coordination and scheduling instructions from the central coordination module, with the coordination and scheduling instructions prioritizing the updating of the guidance display content. This collaborative mechanism transforms each storage system from an independently operating information silo into an interconnected collaborative network node, achieving a global dynamic balance of lifesaving equipment resources at the ship level.

[0084] Example 3

[0085] like Figure 3 As shown, this embodiment provides a control method for a boat lifesaving equipment storage system, including...

[0086] Step S1: In response to the emergency evacuation trigger signal, which is issued by the ship's general commander or main control system, the controller 8 switches from standby mode to emergency working mode, the control cabinet door 2 opens to release the electromagnetic lock, and at the same time, the retrieval detection device 7, the image acquisition device 6 and the information output device 5 are activated and put into working state.

[0087] Step S2: The detection device 7 is used to detect the presence status of each life-saving device 4 in the cabinet at a preset scanning period Δt, for example, 1s-5s. In the RFID implementation of this embodiment, the RFID reader 74 polls and switches between the entry / exit identification antenna 72 and the inventory antenna 73 to read the identification code of the RFID tag 71 on the life-saving device 4 in the cabinet. The inventory determination module of the controller 8 counts the number of tags currently in the cabinet based on this and determines the remaining quantity n of life-saving device 4. In the implementation scheme with the pressure-sensing base plate 9, the inventory determination module synchronously reads the presence weight information of the pressure-sensing base plate and cross-verifies it with the detection result of the retrieval detection device; when the two results are inconsistent, the retrieval detection device is triggered to perform an immediate supplementary scan to arbitrate the true status, and an abnormal alarm signal is generated when the continuous comparison is still inconsistent.

[0088] Step S3: The camera of image acquisition device 6 acquires real-time images of people within the detection area. Its image analysis module performs the following processing: the target detection submodule obtains the total number of people m1; the dwelling determination submodule obtains the number of people waiting in line m2 through target trajectory tracking. The determination condition is: the target's continuous dwelling time is ≥ T1 and its orientation is facing the cabinet. The environment adaptive processing submodule performs corresponding image preprocessing according to the current environmental conditions.

[0089] Step S4: The comprehensive judgment module of controller 8 performs the following judgments based on the remaining quantity n and the personnel status parameter set {m1, m2}: Density calculation: Calculate the personnel density ρ=m1 / A, where A is the preset detection area. When ρ is not less than the density threshold ρ0 and the duration is not less than the congestion time limit Td, it is judged as a congested state; Supply and demand matching: When m2 is not less than α·n, it is judged as insufficient inventory supply. Each judgment condition adopts a time window confirmation mechanism to trigger only when multiple consecutive samples are consistent, in order to suppress false triggering caused by instantaneous noise or single-frame misidentification.

[0090] Step S5: Based on the judgment result of step S4, the guidance output module of controller 8 sends a corresponding judgment instruction to information output device 5. Information output device 5 schedules each output hardware according to the instruction: when only the insufficient inventory judgment condition is met, the display screen shows the remaining quantity and diversion direction guidance, and the indicator light switches to solid yellow; when only the congestion judgment condition is met, the speaker plays an evacuation prompt, the indicator light switches to flashing red, and an alarm is simultaneously sent to the crew terminal; when both conditions are met simultaneously, the speaker plays a safety warning, the display screen simultaneously displays diversion guidance information, the indicator light flashes red, and an alarm is sent to the crew terminal.

[0091] Step S6: Repeat steps S2 to S5 for a cycle period of Δt until an evacuation end signal or manual reset command is received. Upon receiving the end signal, the controller 8 stops the display on the control information output device 5 and switches the operating state to the return mode.

[0092] The contents not described in detail in this specification are existing technologies known to those skilled in the art.

Claims

1. A boat lifesaving equipment storage system, characterized in that, include: The cabinet (1) is fixedly installed in the cabin of the boat, and has an access opening on the front side; Cabinet door (2) is located at the access opening and is used to open when an evacuation trigger signal is received; The storage mechanism is located inside the cabinet (1) and is used to house the life-saving equipment (4). A detection device (7) is installed on the cabinet (1) to detect the presence status of the life-saving equipment (4) and obtain the remaining quantity information accordingly; Image acquisition device (6) is located at the top front edge of cabinet (1), with a field of view covering the preset detection area in front of cabinet (1), used to acquire images of people in the preset detection area and obtain personnel status parameters accordingly, the personnel status parameters including at least the total number of people in the detection area and the number of people waiting in line; Information output device (5) is located on the outer surface of cabinet (1) and is used to present information to evacuees and crew members; The controller (8) is connected to the retrieval detection device (7), the image acquisition device (6) and the information output device (5) respectively, and is used to jointly determine the remaining quantity information and the personnel status parameters, and drive the information output device (5) to output inventory status information and evacuation guidance information according to the determination result; The controller (8) includes: an inventory determination module, used to determine the remaining quantity of life-saving equipment (4) in the cabinet based on the detection result of the retrieval detection device (7); a comprehensive judgment module, used to jointly judge the personnel status parameters and the remaining quantity and generate trigger conditions; and a guidance output module, used to drive the information output device (5) to output inventory status information and evacuation guidance information based on the trigger conditions. The image acquisition device (6) includes a camera and an image analysis module. The image analysis module includes: a target detection submodule, used to acquire the total number of people m1 in the detection area; a stay determination submodule, used to track the target trajectory and determine the number of people waiting in line m2 whose continuous stay time exceeds the preset stay threshold T1 and faces the cabinet (1); and an environment adaptive processing submodule, used to activate automatic gain and contrast enhancement under low illumination conditions, use a defogging algorithm to preprocess the image in a smoke environment, and filter the image jitter caused by ship vibration based on inter-frame motion compensation. The comprehensive judgment module includes: a density judgment submodule, used to calculate the personnel density ρ=m1 / A based on the total number of people m1 and the preset detection area A, and generate a congestion judgment condition when ρ is not less than a preset density threshold and the duration is not less than a preset congestion time limit; a supply and demand matching submodule, used to generate an insufficient inventory judgment condition when the number of people waiting in line m2 is not less than α·n, where n is the remaining quantity and α is a preset proportional coefficient; and a de-jitter verification submodule, used to use a time window confirmation mechanism for each judgment condition to suppress false triggering.

2. The boat lifesaving equipment storage system according to claim 1, characterized in that, The retrieval detection device (7) includes: a radio frequency identification tag (71) set on each piece of life-saving equipment (4) and having a unique identification code; an entry and exit identification antenna (72) set at the retrieval opening with its radiating surface facing the center of the retrieval opening to form a radio frequency identification zone when the life-saving equipment (4) enters or exits the cabinet (1); an inventory antenna (73) set on the inner wall of the cabinet (1) with its radiating direction covering the storage mechanism area and used to scan the radio frequency identification tags (71) on the life-saving equipment (4) in the cabinet; and a radio frequency reader (74) connected to the entry and exit identification antenna (72) and the inventory antenna (73) respectively.

3. The boat lifesaving equipment storage system according to claim 2, characterized in that, The access identification antenna (72) is a microstrip antenna panel, which is set on both sides of the door frame of the access opening and is flush with the inner wall of the door frame column so that it does not protrude from the inner surface of the door frame.

4. The boat lifesaving equipment storage system according to claim 1, characterized in that, Also includes: The pressure-sensing base plate (9) is laid on the surface of each storage layer in the storage mechanism and is located at the bottom of the area where the life-saving equipment (4) is placed. The pressure-sensing base plate (9) is a flexible substrate including a thin film pressure sensor array. The pressure-sensing base plate (9) and the retrieval detection device (7) constitute a dual-redundant inventory sensing mechanism. The inventory determination module is also used to perform real-time cross-verification of the in-situ weight information of the pressure-sensing base plate (9) and the detection result of the retrieval detection device (7). When the two results are inconsistent, the retrieval detection device (7) is triggered to perform an immediate supplementary scan to arbitrate the true state, and an abnormal alarm signal is generated when the continuous comparison is still inconsistent.

5. The boat lifesaving equipment storage system according to claim 1, characterized in that, The guidance output module issues a judgment instruction to the information output device (5) according to the following rules: when only the insufficient inventory judgment condition is met, the display screen of the information output device (5) is driven to display the remaining quantity and diversion direction guidance, and the indicator light of the information output device (5) is driven to switch to the inventory shortage indication state; when only the congestion judgment condition is met, the speaker of the information output device (5) is driven to play evacuation prompts, the indicator light is driven to switch to the safety warning state, and an alarm is simultaneously sent to the crew terminal; when both the congestion judgment condition and the insufficient inventory judgment condition are met, the speaker is driven to play safety warnings, the display screen is driven to display diversion guidance information, the indicator light is driven to switch to the safety warning state, and an alarm is sent to the crew terminal.

6. The boat lifesaving equipment storage system according to any one of claims 1 to 5, characterized in that, It also includes a central coordination module, which is connected to the controllers (8) of multiple storage systems distributed in various compartments of the ship via a shipboard communication network. The central coordination module includes: a data collection unit, used to collect the remaining inventory and personnel status parameters reported by each storage system; a supply and demand calculation unit, used to calculate the resource supply and demand ratio index of each storage system; and a diversion scheduling unit, used to select the storage system with the highest resource supply and demand ratio from the adjacent storage systems as the diversion target when the resource supply and demand ratio of a certain storage system is detected to be lower than a preset threshold, and to issue a coordination scheduling instruction including the diversion target location to the controller (8) of the storage system with supply and demand imbalance to update the guidance content of its information output device (5).

7. A control method for a vessel lifesaving equipment storage system based on any one of claims 1 to 5, characterized in that, Includes the following steps: S1. In response to the emergency evacuation trigger signal, the controller (8) controls the cabinet door (2) to open and starts the retrieval detection device (7), image acquisition device (6) and information output device (5) to enter the working state. S2. The detection device (7) detects the position status of each life-saving device (4) in the cabinet with a preset scanning cycle, and the controller (8) determines the remaining number n of the life-saving device (4) accordingly. S3. The image acquisition device (6) acquires images of people in the detection area and analyzes and obtains a set of personnel status parameters, including at least the total number of people m1 and the number of people waiting in line m2. S4. The controller (8) performs a comprehensive judgment based on the remaining quantity n and the set of personnel status parameters, including: calculating the personnel density ρ=m1 / A, where A is the area of ​​the preset detection area; when ρ is not less than the density threshold and the duration is not less than the congestion time limit, it is judged as a congestion state; when m2 is not less than α·n, it is judged as insufficient inventory supply. A time window confirmation mechanism is used for each judgment condition to suppress false triggering; S5. The controller (8) controls the information output device (5) to output inventory status information and evacuation guidance information according to the priority rules based on the judgment result; S6. Repeat steps S2 to S5 in a cyclical manner until an evacuation end signal is received.

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