Safety monitoring method and system for hydrogen power cabin for ship

Abstract

The invention relates to a safety monitoring method and system of a hydrogen power cabin for a ship, and relates to the field of ship safety monitoring technology, the method comprises the following steps: establishing a detection interval with a current time point as a rear end point and a width as a preset detection duration on a preset time axis, and obtaining a historical smoke emission point in the detection interval; defining a key monitoring area and a common monitoring area according to each historical smoke emission point; determining a key monitoring path according to each key monitoring area, determining a common monitoring path according to each common monitoring area, and respectively controlling a preset monitoring device to move along the key monitoring path and the common monitoring path to obtain a detection smoke value in real time; judging whether the detection smoke value is greater than a preset reference smoke value or not; if the detected smoke value is greater than the reference smoke value, outputting a possible fire signal; and if the detected smoke value is not greater than the reference smoke value, outputting a space safety signal. The application has the effect of improving the safety monitoring effect of the hydrogen power cabin of the ship.

Description

Technical Field

[0001] The present application relates to the field of ship safety monitoring technology, and in particular to a safety monitoring method and system for a hydrogen powered cabin of a ship. Background Art

[0002] The main purpose of the hydrogen power cabin is to provide a stable supply of hydrogen for the hydrogen fuel cell system on the ship. Hydrogen fuel cells generate electricity through the electrochemical reaction of hydrogen and oxygen, which can be directly used for the ship's electric propulsion system or for other electrical equipment on the ship. The design of the hydrogen power cabin usually includes high-pressure hydrogen storage tanks, safety valves, monitoring systems, etc. to ensure the safe storage and supply of hydrogen.

[0003] In the relevant technologies, the monitoring system of the hydrogen power cabin includes hydrogen concentration monitoring, pressure monitoring, temperature monitoring, ventilation monitoring, insulation monitoring, smoke monitoring and emergency shut-off system, among which the ventilation monitoring system is mainly to ensure that the space where the hydrogen power cabin is located has sufficient ventilation to dilute possible leaked hydrogen and reduce the risk of fire and explosion, while the smoke monitoring is mainly used to detect smoke after a fire, so as to detect fires in the hydrogen power cabin in time.

[0004] In the above-mentioned related technologies, since the hydrogen-powered cabin has better ventilation conditions, even if the hydrogen-powered cabin catches fire and produces smoke, the smoke will be dealt with in time, so that when the fire is small, it may not be detected by the smoke sensor. The fire can only be detected after it becomes larger. At this time, the fire handling time will be delayed, resulting in poor overall safety monitoring effect, and there is still room for improvement. Summary of the invention

[0005] In order to improve the safety monitoring effect of a hydrogen power compartment of a ship, the present application provides a safety monitoring method and system for a hydrogen power compartment of a ship.

[0006] In a first aspect, the present application provides a safety monitoring method for a hydrogen powered cabin for a ship, which adopts the following technical solution:

[0007] A safety monitoring method for a hydrogen powered cabin for a ship, comprising:

[0008] A detection interval with the current time point as the end point and a width of the preset detection duration is established on the preset time axis, and historical smoke emission points are obtained in the detection interval;

[0009] Delineate key monitoring areas and general monitoring areas based on historical smoke emission points;

[0010] Determine the key monitoring path according to each key monitoring area, and determine the ordinary monitoring path according to each ordinary monitoring area, and control the preset monitoring devices to move along the key monitoring path and the ordinary monitoring path respectively to obtain the detected smoke value in real time;

[0011] Determine whether the detected smoke value is greater than a preset reference smoke value;

[0012] If the detected smoke value is greater than the reference smoke value, a possible fire signal is output;

[0013] If the detected smoke value is not greater than the reference smoke value, a space safety signal is output.

[0014] Optionally, the steps of defining key monitoring areas and general monitoring areas according to each historical smoke emission point include:

[0015] Determine the distance between any two historical smoke emission points;

[0016] Two historical smoke emission points whose point distance is less than a preset close distance are summarized into the same preset initially empty point set;

[0017] In the same point set, the line segments connecting the historical smoke emission points are determined;

[0018] Counting the intersection points of each line segment connected to each scattering point according to the intersection points with the line segments connected to other scattering points to determine the number of intersection points;

[0019] When the number of intersection points is two, the corresponding line segments connected by the scattered points are defined as boundary segments, and the key monitoring areas are formed by enclosing all the boundary segments, and the areas in the preset overall monitoring area that are not key monitoring areas are determined as ordinary monitoring areas.

[0020] Optionally, the steps of determining the key monitoring paths according to the key monitoring areas include:

[0021] A detection circle is constructed with a preset detection distance as the radius, and the detection circle is placed in the key monitoring area until the detection circle completely covers the key monitoring area, and the detection combination is determined according to the detection circle currently used;

[0022] The number of detections is determined by counting the detection circles in each detection combination;

[0023] Determine the detection quantity with the smallest value according to a preset sorting rule, and define the detection combination corresponding to the detection quantity as a valid combination;

[0024] In the effective combination, the detection center point is determined according to each detection circle, and all the detection center points are randomly sorted to determine the internal movement order, and all the key monitoring areas are randomly sorted to determine the regional movement order;

[0025] Determine the monitoring movement path and monitoring movement distance according to the regional movement sequence and the internal movement sequence;

[0026] The monitoring moving distance with the smallest value is determined according to the sorting rule, and the monitoring moving path corresponding to the monitoring moving distance is determined as the key monitoring path.

[0027] Optionally, after the detection quantity is determined, the safety monitoring method for the ship's hydrogen power compartment also includes:

[0028] Determine whether there are at least two detection combinations with the smallest and identical detection numbers;

[0029] If there are not at least two detection combinations with the smallest and identical detection numbers, then the valid combination is determined according to the detection combination corresponding to the smallest detection number;

[0030] If there are at least two detection combinations with the same minimum number of detections, the area covered by all detection circles in the detection combination is defined as the coverage area, and the external monitoring area is determined based on the coverage area and the key monitoring area;

[0031] The external monitoring area is determined according to the external monitoring region, and the external monitoring area with the smallest value is determined according to the sorting rule, and the detection combination corresponding to the external monitoring area is determined as a valid combination.

[0032] Optionally, after the external monitoring area is determined, the safety monitoring method for the ship's hydrogen power compartment also includes:

[0033] Determine whether there are at least two detection combinations with the smallest external monitoring areas and the same size;

[0034] If there are not at least two detection combinations with the smallest external monitoring area and the same detection combination, the detection combination corresponding to the smallest external monitoring area is determined as the valid combination;

[0035] If there are at least two identical detection combinations with the smallest external monitoring area, the corresponding number of points of the corresponding detection circle is determined in the key monitoring area according to each historical smoke emission point;

[0036] A point corresponding quantity is randomly selected from all point corresponding quantities as the original corresponding quantity, and the remaining point corresponding quantities are determined as the comparative corresponding quantities;

[0037] Calculate the quantity deviation value according to the original corresponding quantity and all the compared corresponding quantities, and define the minimum quantity deviation value as the combination deviation value of the detection combination;

[0038] The average corresponding quantity is determined by calculating the corresponding quantity of all points, and the combination selection parameter is determined by calculating the combination deviation value and the average corresponding quantity;

[0039] A combination selection parameter with the largest value is determined according to the sorting rule, and the detection combination corresponding to the combination selection parameter is determined as a valid combination.

[0040] Optionally, the step of controlling the preset monitoring device to move along the key monitoring path includes:

[0041] Some key monitoring paths within the key monitoring area are defined as key internal paths, and the paths other than the key internal paths in the key monitoring paths are defined as key external paths;

[0042] Count the historical smoke emission points in the point set corresponding to the key monitoring area to determine the number of set points;

[0043] Determine the internal moving speed corresponding to the number of assembly points according to the preset speed matching relationship;

[0044] The monitoring device is controlled to move at an internal moving speed on the key internal path and at a preset external moving speed on the key external path, wherein the external moving speed is greater than the internal moving speed.

[0045] Optionally, the step of controlling the preset monitoring device to move along a common monitoring path includes:

[0046] On the time axis, a proximity interval with a width of a preset proximity time length is established with the current time point as the rear end point, and a key driving path is obtained in the proximity interval according to the monitoring device on the key monitoring path;

[0047] Obtaining a common detection position of a monitoring device on a common monitoring path;

[0048] Determine the impact separation distance based on the common detection positions and points on the key driving path;

[0049] Determine whether there is a situation where the impact separation distance is less than the preset reference separation distance;

[0050] If there is no situation where the impact separation distance is less than the reference separation distance, the monitoring device moving along the common monitoring path is controlled to move at the external moving speed;

[0051] If there is a situation where the impact separation distance is smaller than the reference separation distance, the monitoring device moving along the common monitoring path is controlled to move at a preset rapid moving speed, wherein the rapid moving speed is greater than the external moving speed.

[0052] In the second aspect, the present application provides a safety monitoring system for a hydrogen powered cabin for a ship, which adopts the following technical solution:

[0053] A safety monitoring system for a hydrogen powered cabin for a ship, comprising:

[0054] An acquisition module, connected with the processing module and the judgment module, for acquiring information;

[0055] A processing module, connected to the acquisition module and the judgment module, for storing and processing information;

[0056] A judgment module, connected with the acquisition module and the processing module, for judging the information;

[0057] The processing module establishes a detection interval on a preset time axis with the current time point as the rear end point and a width of the preset detection duration, and enables the acquisition module to acquire historical smoke emission points in the detection interval;

[0058] The processing module demarcates key monitoring areas and general monitoring areas based on each historical smoke emission point;

[0059] The processing module determines the key monitoring path according to each key monitoring area, and determines the common monitoring path according to each common monitoring area, and controls the preset monitoring devices to move along the key monitoring path and the common monitoring path respectively so that the acquisition module can obtain the detected smoke value in real time;

[0060] The judging module judges whether the detected smoke value is greater than a preset reference smoke value;

[0061] If the judgment module determines that the detected smoke value is greater than the reference smoke value, the processing module outputs a possible fire signal;

[0062] If the judging module determines that the detected smoke value is not greater than the reference smoke value, the processing module outputs a space safety signal.

[0063] In summary, the present application includes at least one of the following beneficial technical effects:

[0064] 1. When conducting smoke detection in the hydrogen power compartment, different monitoring devices can be controlled to move continuously to conduct close-range detection of smoke at various locations, thereby reducing the occurrence of smoke dissipation without being detected after a fire occurs, thereby improving the safety monitoring effect of the ship's hydrogen power compartment;

[0065] 2. Analyze the locations of each historical smoke emission point to plan a suitable detection path, so that the monitoring device can better monitor the smoke;

[0066] 3. At a location point that has been detected by one of the monitoring devices, another monitoring device can be controlled to move quickly, thereby improving the overall monitoring efficiency. DETAILED DESCRIPTION

[0067] In order to make the purpose, technical solution and advantages of the present application more clear, the present application is further described in detail below in conjunction with the embodiments. It should be understood that the specific embodiments described here are only used to explain the present application and are not used to limit the present application.

[0068] The embodiments of the present application are described in further detail below.

[0069] The present application embodiment discloses a safety monitoring method for a hydrogen powered cabin for a ship. The method flow of the safety monitoring method for a hydrogen powered cabin for a ship includes the following steps:

[0070] Step S100: establishing a detection interval with the current time point as the rear end point and a width of the preset detection duration on a preset time axis, and obtaining historical smoke emission points in the detection interval.

[0071] The time axis is a coordinate axis formed by the combination of various time points, which points from the time points that have been reached to the time points that have not yet been reached. The detection duration is the duration set by the staff to analyze the historical fire smoke conditions in the hydrogen power cabin, such as one year. A detection interval is established to facilitate the acquisition and analysis of data within the detection period; the historical smoke emission point is the location point where a fire occurs in the detection interval for smoke emission, which can be obtained by calling the accident data.

[0072] Step S101: Delineate key monitoring areas and general monitoring areas according to each historical smoke emission point.

[0073] The key monitoring area is a location area determined to be prone to fire under theoretical circumstances, and the general monitoring area is a location area determined to be not prone to fire under theoretical circumstances. Both can be determined based on the distribution of historical smoke emission points. The determination method can refer to steps S200-S204.

[0074] Step S102: determining a key monitoring path according to each key monitoring area, and determining a common monitoring path according to each common monitoring area, and controlling the preset monitoring devices to move along the key monitoring path and the common monitoring path respectively to obtain the detected smoke value in real time.

[0075] The key monitoring path is the moving path of the monitoring device required for more effective detection of all key monitoring areas, and the ordinary monitoring path is the moving path of the monitoring device required for more effective detection of all ordinary monitoring areas. The method for determining the two paths can refer to steps S300-S305; the monitoring device is a device with mobile power supply and can detect smoke at a close distance, for example, a module that can move on three axes of xyz and carry a smoke sensor; the detected smoke value is the smoke value obtained by the monitoring device, and the monitoring device can be moved close to each position point by moving. When a fire occurs, even if the ventilation effect of the hydrogen power cabin is better, the closer monitoring device can still obtain the corresponding smoke value, thereby effectively monitoring the safety of the hydrogen power cabin.

[0076] Step S103: determining whether the detected smoke value is greater than a preset reference smoke value.

[0077] The baseline smoke value is the minimum smoke value that can be detected when a fire occurs, set by the staff. The purpose of the judgment is to know whether there is a fire in the hydrogen power cabin.

[0078] Step S1031: If the detected smoke value is greater than the reference smoke value, a possible fire signal is output.

[0079] When the detected smoke value is greater than the reference smoke value, it indicates that a fire has occurred. At this time, a possible fire signal is output to identify the situation, so that the situation can be dealt with promptly later.

[0080] Step S1032: If the detected smoke value is not greater than the reference smoke value, a space safety signal is output.

[0081] When the detected smoke value is not greater than the reference smoke value, it means that no fire is detected. At this time, a space safety signal is output to identify the situation, so that the management personnel can know the specific situation of the hydrogen power cabin.

[0082] The steps to define key monitoring areas and general monitoring areas based on historical smoke emission points include:

[0083] Step S200: determining the distance between any two historical smoke emission points.

[0084] The point spacing distance is the straight-line distance between two historical smoke emission points, which can be calculated and determined using two coordinate position points.

[0085] Step S201: two historical smoke emission points whose point spacing distance is less than a preset close spacing distance are grouped into the same preset initially empty point set.

[0086] The close separation distance is the maximum point separation distance allowed when the staff determines that two historical smoke emission points are close to each other. When the point separation distance is less than the close separation distance, it means that the two historical smoke emission points are close to each other. At this time, they are summarized into the same point set for subsequent analysis. The summarization method of historical smoke emission points is as follows: there are three historical smoke emission points A, B, and C, among which the point separation distance between A and B is less than the close separation distance, the point separation distance between B and C is less than the close separation distance, and the point separation distance between A and C is not less than the close separation distance. Since B can be summarized into the same point set with A and C, A, B, and C can be summarized into the same point set.

[0087] Step S202: Determine line segments connecting smoke emission points in the same point set by connecting the historical smoke emission points.

[0088] The line segment connecting the emission points is a line segment obtained by taking two historical smoke emission points as endpoints.

[0089] Step S203: Count the intersection points of each scatter point connected line segment that intersects with other scatter point connected line segments to determine the number of intersection points.

[0090] The number of intersection points is the total number of intersection points on the line segments connected to the scattered points that intersect with the line segments connected to other scattered points.

[0091] Step S204: when the number of intersection points is two, the corresponding line segments connecting the scattered points are defined as boundary segments, and all boundary segments are used to enclose a key monitoring area, and the area in the preset overall monitoring area that is not a key monitoring area is determined as a common monitoring area.

[0092] When the number of intersection points is two, it means that only two endpoints of the line segment connected to the scattering points intersect with the other line segments connected to the scattering points, that is, the line segment connected to the scattering points is at the outermost part of the area enclosed by the line segments connected to all the scattering points. It is defined as a boundary line segment to distinguish the line segments connected to different scattering points, which is convenient for subsequent analysis; at this time, the area enclosed by all boundary line segments is the area enclosed by all historical smoke scattering points in the point set, that is, the area that needs to be monitored, and it can be determined as the key monitoring area at this time; the overall monitoring area is the area set in advance by the staff for smoke monitoring of the hydrogen power cabin, and the corresponding ordinary monitoring area is the other areas in the overall monitoring area except the key monitoring area.

[0093] The steps to determine the key monitoring paths according to each key monitoring area include:

[0094] Step S300: construct a detection circle with a preset detection distance as the radius, and place the detection circle in the key monitoring area until the detection circle completely covers the key monitoring area, and determine the detection combination according to the currently used detection circle.

[0095] The detection distance is the distance allowed when the monitoring device used can effectively detect smoke at each location, and the detection circle is the range that the monitoring device can detect. By adding detection circles in the key monitoring areas, you can know how to detect all key detection areas. When the detection circle completely covers the key monitoring area, it means that the detection circle currently used can effectively detect all positions in the key monitoring area. At this time, the detection circle used and its corresponding position constitute a detection combination, which is convenient for subsequent analysis.

[0096] Step S301: Count the detection circles in each detection combination to determine the number of detections.

[0097] The number of detections is the number of detection circles used in the determined detection combination.

[0098] Step S302: determining the detection quantity with the smallest value according to a preset sorting rule, and defining the detection combination corresponding to the detection quantity as a valid combination.

[0099] The sorting rule is a method set by the staff to sort the values, such as the bubble method. The sorting rule can be used to determine the number of detections with the smallest value, that is, the corresponding detection combination at this time requires the least detection circles, that is, the monitoring device needs to reach the least number of locations. At this time, it is defined as a valid combination to distinguish different detection combinations, which is convenient for subsequent analysis.

[0100] Step S303: Determine the detection center point according to each detection circle in the valid combination, and randomly sort all the detection center points to determine the internal movement sorting, and randomly sort all the key monitoring areas to determine the regional movement sorting.

[0101] The detection center point is the center of the detection circle, which is also the position point that the monitoring device needs to reach. The internal movement sorting is the order in which the detection center points in the same key monitoring area are detected, which is also the order in which the monitoring device needs to move to each point. The regional movement sorting is the order in which the monitoring device detects each key monitoring area, which is also the order in which the monitoring device needs to move to each area.

[0102] Step S304: Determine the monitoring movement path and the monitoring movement distance according to the regional movement sequence and the internal movement sequence.

[0103] The monitoring movement path is the path that the monitoring device needs to move when performing detection movement according to the regional movement sequence and each internal movement sequence, and the monitoring movement distance is the distance that the monitoring device needs to travel when moving along the monitoring movement path.

[0104] Step S305: determining the monitoring movement distance with the smallest value according to the sorting rule, and determining the monitoring movement path corresponding to the monitoring movement distance as the key monitoring path.

[0105] The sorting rules can be used to determine the monitoring moving distance with the smallest value, that is, the corresponding path at this time can meet the monitoring requirements while making the interval time for repeated detection by the monitoring device the shortest, so that it is determined as the key monitoring path for operation; similarly, the ordinary monitoring path can also be determined according to the method of steps S300-step S305.

[0106] After the number of detections is determined, the safety monitoring method for the ship's hydrogen power compartment also includes:

[0107] Step S400: Determine whether there are at least two detection combinations with the smallest and identical detection numbers.

[0108] The purpose of the judgment is to find out whether there are multiple detection combinations that meet the detection quantity requirement, so as to facilitate the subsequent determination of the effective combination.

[0109] Step S4001: If there are not at least two detection combinations with the same minimum number of detections, a valid combination is determined according to the detection combination corresponding to the minimum number of detections.

[0110] When there are not at least two detection combinations with the smallest and identical detection numbers, it means that only one detection combination meets the requirement, and it can be determined as a valid combination.

[0111] Step S4002: If there are at least two detection combinations with the same minimum number of detections, the area covered by all detection circles in the detection combination is defined as the coverage area, and the external monitoring area is determined based on the coverage area and the key monitoring area.

[0112] When there are at least two detection combinations with the same minimum number of detections, it means that there are multiple detection combinations that meet the requirements and further analysis is needed; the coverage area is the area covered after all detection circles are placed, and the external monitoring area is the area in the coverage area that is not in the key monitoring area.

[0113] Step S401: determining an external monitoring area according to the external monitoring region, determining an external monitoring area with a minimum value according to a sorting rule, and determining a detection combination corresponding to the external monitoring area as a valid combination.

[0114] The external monitoring area refers to the area of ​​the external monitoring region. The external monitoring area with the smallest value can be determined through the sorting rules. That is, at this time, the detection area wasted is the least under the same detection circle. That is, at this time, the monitoring device can detect most of the key monitoring areas when moving. At this time, the corresponding detection combination can be determined as a valid combination, so that the monitoring effect on the key monitoring areas is better.

[0115] After the external monitoring area is determined, the safety monitoring methods for the ship's hydrogen power compartment also include:

[0116] Step S500: Determine whether there are at least two detection combinations with the smallest external monitoring areas and the same detection areas.

[0117] The purpose of the judgment is to find out whether there are multiple detection combinations that meet the external monitoring area requirements, so as to facilitate the subsequent determination of the effective combination.

[0118] Step S5001: If there are not at least two detection combinations with the smallest external monitoring areas and the same detection combination, the detection combination corresponding to the smallest external monitoring area is determined as a valid combination.

[0119] When there are not at least two detection combinations with the smallest external monitoring areas and the same area, it means that there is only one detection combination that meets the requirements, and it can be determined as a valid combination.

[0120] Step S5002: If there are at least two detection combinations with the smallest external monitoring areas and the same detection areas, then the corresponding number of points of the corresponding detection circles is determined in the key monitoring area according to each historical smoke emission point.

[0121] When there are at least two detection combinations with the smallest and identical external monitoring areas, it means that there are multiple detection combinations that meet the requirements, and further analysis is needed. The corresponding number of points is the number of detection circles covered in a single historical smoke emission point, that is, how many detection circles will cover the historical smoke emission point at the same time.

[0122] Step S501: randomly selecting a point corresponding quantity from all point corresponding quantities as the original corresponding quantity, and determining the remaining point corresponding quantities as the comparative corresponding quantities.

[0123] Define the original corresponding quantity and the comparative corresponding quantity to distinguish the corresponding quantities of different points for subsequent analysis.

[0124] Step S502: Calculate the quantity deviation value according to the original corresponding quantity and all the compared corresponding quantities, and define the minimum quantity deviation value as the combination deviation value of the detection combination.

[0125] The quantity deviation value is a parameter that reflects the distance between the determined original corresponding quantity and the other comparative corresponding quantities. The smaller the value, the more the original corresponding quantity can represent the other comparative corresponding quantities. Therefore, the combined deviation value is defined to distinguish different quantity deviation values ​​for subsequent analysis. The calculation formula of the quantity deviation value is: Where δ is the quantity deviation value, M Y is the original corresponding quantity, M Bi is the corresponding quantity of the i-th comparison, and n is the number of corresponding quantities of comparison.

[0126] Step S503: Calculate the average corresponding quantity based on the corresponding quantities of all the points, and calculate the combination selection parameter based on the combination deviation value and the average corresponding quantity.

[0127] The average corresponding number is the value obtained by calculating the average value of the corresponding number of all points. The combination selection parameter is a parameter that reflects whether the selected detection combination is appropriate. The larger the parameter, the better the selected detection combination effect. The calculation formula of the combination selection parameter is τ=αδ z +βM P , where τ is the combination selection parameter, δ z is the combined deviation value, M P is the average corresponding quantity, α is a preset calculation parameter for calculating the combined deviation value, and β is a preset calculation parameter for calculating the average corresponding quantity.

[0128] Step S504: determining a combination selection parameter with the largest value according to the sorting rule, and determining the detection combination corresponding to the combination selection parameter as a valid combination.

[0129] The combination selection parameter with the largest value can be determined through the sorting rules, that is, the corresponding detection combination has the best effect at this time, and it can be determined as a valid combination.

[0130] The steps of controlling the preset monitoring device to move along the key monitoring path include:

[0131] Step S600: defining part of the key monitoring paths within the key monitoring area as key internal paths, and defining paths in the key monitoring paths other than the key internal paths as key external paths.

[0132] Define key internal paths and key external paths to distinguish different paths for subsequent analysis.

[0133] Step S601: Count the historical smoke emission points in the point set corresponding to the key monitoring area to determine the number of set points.

[0134] The number of assembly points is the number of historical smoke emission points contained in a single key monitoring area. When multiple fires occurred at the same point in history, the number of assembly points is recorded according to the number of fires.

[0135] Step S602: Determine the internal moving speed corresponding to the number of set points according to a preset speed matching relationship.

[0136] The internal moving speed is the speed at which a more detailed inspection of the key monitoring areas can be carried out. Different numbers of assembly points indicate that the possibility of fire in each area is different, and the internal moving speeds required at this time are also different. The speed matching relationship between the two is set and entered in advance by the staff. It is necessary to ensure that the larger the number of assembly points, the smaller the corresponding internal moving speed.

[0137] Step S603: Control the monitoring device to move at an internal moving speed on the key internal path, and to move at a preset external moving speed on the key external path, wherein the external moving speed is greater than the internal moving speed.

[0138] The monitoring device is controlled to move at different speeds on different paths to ensure that the monitoring device can achieve a better monitoring effect. The external moving speed is a fixed value.

[0139] The steps of controlling the preset monitoring device to move along the common monitoring path include:

[0140] Step S700: establishing a proximity interval with a width of a preset proximity time length on the time axis with the current time point as the rear end point, and obtaining a key driving path in the proximity interval according to the monitoring device on the key monitoring path.

[0141] The proximity duration is the duration set by the staff to obtain the detection situation of the monitoring device in a short period of time, for example, 10s. The proximity interval is established to facilitate the acquisition and analysis of data within the proximity duration; the key driving path is the path that the monitoring device moving on the key monitoring path moves through in the proximity interval.

[0142] Step S701: Acquire a common detection position of a monitoring device on a common monitoring path.

[0143] The normal detection position is the real-time position of the monitoring device on the normal monitoring path.

[0144] Step S702: Determine the impact distance according to the common detection position and each point on the key driving path.

[0145] The impact separation distance is the distance value between the common detection position and each point on the key driving path.

[0146] Step S703: Determine whether there is a situation where the influencing distance is smaller than a preset reference distance.

[0147] The benchmark separation distance is the maximum impact separation distance allowed when the staff determines that the distance between two location points is very close. The purpose of the judgment is to find out whether the location point detected by the monitoring device on the current ordinary monitoring path has been detected by another monitoring device within a short time.

[0148] Step S7031: If there is no situation where the influencing distance is less than the reference distance, the monitoring device moving along the common monitoring path is controlled to move at the external moving speed.

[0149] When there is no situation where the influencing distance is less than the reference distance, it means that the currently detected position point has not been detected in a short time, and the detection can be performed at a normal external moving speed.

[0150] Step S7032: If there is a situation where the influencing separation distance is smaller than the reference separation distance, the monitoring device moving along the common monitoring path is controlled to move at a preset rapid moving speed, wherein the rapid moving speed is greater than the external moving speed.

[0151] When there is a situation where the influencing distance is less than the reference distance, it means that the currently detected position point has been detected in a short time. At this time, there is no need to repeat the careful inspection, and the monitoring device can be controlled to move quickly, thereby improving the overall monitoring efficiency.

[0152] Based on the same inventive concept, an embodiment of the present invention provides a safety monitoring system for a hydrogen power compartment for a ship, comprising:

[0153] An acquisition module, connected with the processing module and the judgment module, for acquiring information;

[0154] A processing module, connected to the acquisition module and the judgment module, for storing and processing information;

[0155] A judgment module, connected with the acquisition module and the processing module, for judging the information;

[0156] The processing module establishes a detection interval on a preset time axis with the current time point as the rear end point and a width of the preset detection duration, and enables the acquisition module to acquire historical smoke emission points in the detection interval;

[0157] The processing module demarcates key monitoring areas and general monitoring areas based on each historical smoke emission point;

[0158] The processing module determines the key monitoring path according to each key monitoring area, and determines the common monitoring path according to each common monitoring area, and controls the preset monitoring devices to move along the key monitoring path and the common monitoring path respectively so that the acquisition module can obtain the detected smoke value in real time;

[0159] The judging module judges whether the detected smoke value is greater than a preset reference smoke value;

[0160] If the judgment module determines that the detected smoke value is greater than the reference smoke value, the processing module outputs a possible fire signal;

[0161] If the judging module determines that the detected smoke value is not greater than the reference smoke value, the processing module outputs a space safety signal;

[0162] The monitoring area demarcation module is used to demarcate key monitoring areas and general monitoring areas;

[0163] A key monitoring path determination module is used to determine the key monitoring paths;

[0164] A detection combination first screening module is used to screen multiple detection combinations that meet the detection quantity requirement;

[0165] The second detection combination screening module is used to screen multiple detection combinations that meet the external monitoring area requirements;

[0166] A key path movement control module is used to control the movement of monitoring devices on key monitoring paths;

[0167] The common path movement control module is used to control the movement of the monitoring device on the common monitoring path.

[0168] At the same time, in view of the particularity of the hydrogen-powered cabin of ships, in order to avoid combustion fires caused by hydrogen leakage, a flame monitoring step is also provided, and ultraviolet and infrared flame sensors and temperature sensors are added. Combined with the above-mentioned smoke sensor, the three sensors will send out a coupled alarm, which means that there is a fire, that is, a high-level early warning and fire extinguishing alarm will be issued. The above-mentioned sensors can be set in different places to make a safe layout for sensitive areas.

[0169] Those skilled in the art can clearly understand that for the convenience and simplicity of description, only the division of the above-mentioned functional modules is used as an example. In actual applications, the above-mentioned functions can be assigned to different functional modules as needed, that is, the internal structure of the device is divided into different functional modules to complete all or part of the functions described above. The specific working process of the system, device and unit described above can refer to the corresponding process in the aforementioned method embodiment, and will not be repeated here.

Claims

1. A safety monitoring method for a hydrogen powered cabin for a ship, characterized in that: include: A detection interval with the current time point as the end point and a width of the preset detection duration is established on the preset time axis, and historical smoke emission points are obtained in the detection interval; Delineate key monitoring areas and general monitoring areas based on historical smoke emission points; Determine the key monitoring path according to each key monitoring area, and determine the ordinary monitoring path according to each ordinary monitoring area, and control the preset monitoring devices to move along the key monitoring path and the ordinary monitoring path respectively to obtain the detected smoke value in real time; Determine whether the detected smoke value is greater than a preset reference smoke value; If the detected smoke value is greater than the reference smoke value, a possible fire signal is output; If the detected smoke value is not greater than the reference smoke value, a space safety signal is output.

2. The safety monitoring method for a hydrogen powered cabin for a ship according to claim 1, characterized in that: The steps to define key monitoring areas and general monitoring areas based on historical smoke emission points include: Determine the distance between any two historical smoke emission points; Two historical smoke emission points whose point distance is less than a preset close distance are summarized into the same preset initially empty point set; In the same point set, the line segments connecting the historical smoke emission points are determined; Counting the intersection points of each line segment connected to each scattering point according to the intersection points with the line segments connected to other scattering points to determine the number of intersection points; When the number of intersection points is two, the corresponding line segments connected by the scattered points are defined as boundary segments, and the key monitoring areas are formed by enclosing all the boundary segments, and the areas in the preset overall monitoring area that are not key monitoring areas are determined as ordinary monitoring areas.

3. The safety monitoring method for a hydrogen powered cabin for a ship according to claim 2, characterized in that: The steps to determine the key monitoring paths according to each key monitoring area include: A detection circle is constructed with a preset detection distance as the radius, and the detection circle is placed in the key monitoring area until the detection circle completely covers the key monitoring area, and the detection combination is determined according to the detection circle currently used; The number of detections is determined by counting the detection circles in each detection combination; Determine the detection quantity with the smallest value according to a preset sorting rule, and define the detection combination corresponding to the detection quantity as a valid combination; In the effective combination, the detection center point is determined according to each detection circle, and all the detection center points are randomly sorted to determine the internal movement order, and all the key monitoring areas are randomly sorted to determine the regional movement order; Determine the monitoring movement path and monitoring movement distance according to the regional movement sequence and the internal movement sequence; The monitoring moving distance with the smallest value is determined according to the sorting rule, and the monitoring moving path corresponding to the monitoring moving distance is determined as the key monitoring path.

4. The safety monitoring method for a hydrogen powered cabin for a ship according to claim 3, characterized in that: After the number of detections is determined, the safety monitoring method for the ship's hydrogen power compartment also includes: Determine whether there are at least two detection combinations with the smallest and identical detection numbers; If there are not at least two detection combinations with the smallest and identical detection numbers, then the valid combination is determined according to the detection combination corresponding to the smallest detection number; If there are at least two detection combinations with the same minimum number of detections, the area covered by all detection circles in the detection combination is defined as the coverage area, and the external monitoring area is determined based on the coverage area and the key monitoring area; The external monitoring area is determined according to the external monitoring region, and the external monitoring area with the smallest value is determined according to the sorting rule, and the detection combination corresponding to the external monitoring area is determined as a valid combination.

5. The safety monitoring method for a hydrogen powered cabin for a ship according to claim 4, characterized in that: After the external monitoring area is determined, the safety monitoring methods for the ship's hydrogen power compartment also include: Determine whether there are at least two detection combinations with the smallest external monitoring areas and the same size; If there are not at least two detection combinations with the smallest external monitoring area and the same detection combination, the detection combination corresponding to the smallest external monitoring area is determined as the valid combination; If there are at least two identical detection combinations with the smallest external monitoring area, the corresponding number of points of the corresponding detection circle is determined in the key monitoring area according to each historical smoke emission point; A point corresponding quantity is randomly selected from all point corresponding quantities as the original corresponding quantity, and the remaining point corresponding quantities are determined as the comparative corresponding quantities; Calculate the quantity deviation value according to the original corresponding quantity and all the compared corresponding quantities, and define the minimum quantity deviation value as the combination deviation value of the detection combination; The average corresponding quantity is determined by calculating the corresponding quantity of all points, and the combination selection parameter is determined by calculating the combination deviation value and the average corresponding quantity; A combination selection parameter with the largest value is determined according to the sorting rule, and the detection combination corresponding to the combination selection parameter is determined as a valid combination.

6. The safety monitoring method for a hydrogen powered cabin for a ship according to claim 2, characterized in that: The steps of controlling the preset monitoring device to move along the key monitoring path include: Some key monitoring paths within the key monitoring area are defined as key internal paths, and the paths other than the key internal paths in the key monitoring paths are defined as key external paths; Count the historical smoke emission points in the point set corresponding to the key monitoring area to determine the number of set points; Determine the internal moving speed corresponding to the number of assembly points according to the preset speed matching relationship; The monitoring device is controlled to move at an internal moving speed on the key internal path and at a preset external moving speed on the key external path, wherein the external moving speed is greater than the internal moving speed.

7. The safety monitoring method for a hydrogen powered cabin for a ship according to claim 6, characterized in that: The steps of controlling the preset monitoring device to move along the common monitoring path include: On the time axis, a proximity interval with a width of a preset proximity time length is established with the current time point as the rear end point, and a key driving path is obtained in the proximity interval according to the monitoring device on the key monitoring path; Obtaining a common detection position of a monitoring device on a common monitoring path; Determine the impact separation distance based on the common detection positions and points on the key driving path; Determine whether there is a situation where the impact separation distance is less than the preset reference separation distance; If there is no situation where the impact separation distance is less than the reference separation distance, the monitoring device moving along the common monitoring path is controlled to move at the external moving speed; If there is a situation where the impact separation distance is smaller than the reference separation distance, the monitoring device moving along the common monitoring path is controlled to move at a preset rapid moving speed, wherein the rapid moving speed is greater than the external moving speed.

8. A safety monitoring system for a hydrogen powered cabin for a ship, characterized in that: include: An acquisition module, connected with the processing module and the judgment module, for acquiring information; A processing module, connected to the acquisition module and the judgment module, for storing and processing information; A judgment module, connected with the acquisition module and the processing module, for judging the information; The processing module establishes a detection interval on a preset time axis with the current time point as the rear end point and a width of the preset detection duration, and enables the acquisition module to acquire historical smoke emission points in the detection interval; The processing module demarcates key monitoring areas and general monitoring areas based on each historical smoke emission point; The processing module determines the key monitoring path according to each key monitoring area, and determines the common monitoring path according to each common monitoring area, and controls the preset monitoring devices to move along the key monitoring path and the common monitoring path respectively so that the acquisition module can obtain the detected smoke value in real time; The judging module judges whether the detected smoke value is greater than a preset reference smoke value; If the judgment module determines that the detected smoke value is greater than the reference smoke value, the processing module outputs a possible fire signal; If the judging module determines that the detected smoke value is not greater than the reference smoke value, the processing module outputs a space safety signal.