Ship safety monitoring system and method based on night navigation

Abstract

The invention relates to the technical field of ship safety monitoring, in particular to a ship safety monitoring system and method based on night sailing, and the system comprises an acquisition unit which is used for obtaining an initial sailing path; the test unit is used for carrying out a light shielding effect test and determining whether piloting light change guidance is carried out or not; the path correction unit is used for performing path intersection analysis on the initial navigation path and the warning path; the path merging unit is used for performing path merging according to the piloting light color determined for the ship so as to generate a complete navigation path; the adjusting unit is used for determining a ship distance threshold value for the sailing path; the test unit is arranged to carry out a light shielding effect test, and piloting light change guidance is carried out according to a detection result, so that the light color of piloting light emitted by the piloting light emitter is matched with the color of a ship body, visual interference caused by reflected light of the ship body is reduced, and the navigation safety of the ship sailing at night is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of ship safety monitoring, and in particular to a ship safety monitoring system and method based on nighttime navigation. Background Art

[0002] When ships are sailing at night, the reduced visibility and the uncertainty of nighttime environmental factors often lead to an increase in the number of collisions between ships. Therefore, it is very important to collect, analyze and monitor various parameters of ships at night.

[0003] In the prior art, AIS equipment is usually used to obtain parameter information of a ship; based on the parameter information, it is determined whether the ship mass corresponding to the ship is greater than a first preset threshold value, if not, a laser radar is used to obtain the speed of the ship and the distance between the ship and the offshore operating platform; it is determined whether the distance between the ship and the offshore operating platform is less than a second preset threshold value, if yes, a wave radar is used to obtain the wave period and wave height; the real-time impact energy of the ship is obtained based on the ship mass, the ship speed, the wave period and the wave height, so as to monitor whether the ship can be safely docked based on the real-time impact energy of the ship; thus, by receiving and monitoring the ship data approaching the offshore platform, and calculating in real time whether the ship meets the berthing conditions, the occurrence of collision incidents can be avoided to the greatest extent.

[0004] However, the technical solution of the above-mentioned ship safety monitoring system ignores the visual interference that the pilot light will cause to the adjacent ships at night after being reflected by the hull, thus resulting in lower safety of ships sailing at night. Summary of the invention

[0005] The purpose of the present invention is to provide a ship safety monitoring system and method based on night navigation, so as to solve the problem in the related art that the pilot light reflects off the hull and causes visual interference to adjacent nighttime ships, thereby resulting in lower safety of ships sailing at night.

[0006] To this end, on one hand, the present invention provides a ship safety monitoring system based on night navigation, which is applied to port ship navigation, comprising:

[0007] A collection unit, which is used to obtain an initial navigation path of a navigation vessel entering the navigation area;

[0008] A test unit, which is used to test the light shielding effect of ships planning to enter the buffer zone, and determine whether to perform pilot light guidance according to the test results;

[0009] a path correction unit connected to the acquisition unit, configured to perform a path intersection analysis on the initial navigation path and the warning path to determine whether to perform path correction, and to generate a corrected path when it is determined that path correction is to be performed;

[0010] a path merging unit connected to the acquisition unit and the path correction unit, for merging the paths of the corrected paths of the ships guided by the pilot light change and the initial navigation paths of the ships determined not to be guided by the pilot light change according to the pilot light colors determined for the ships, so as to generate a complete navigation path of each ship in the buffer zone in the navigation area;

[0011] an adjusting unit, which is connected to the testing unit and the path merging unit, and is used to determine a ship distance threshold between two adjacent complete navigation paths according to a test result of the light shielding effect test;

[0012] The pilot light variable guidance is to adjust the color of the pilot light emitted by the hull according to the hull color of the sailing ship entering the buffer zone.

[0013] The test unit includes a pilot light transmitter, a test transmitter and a reflected light receiver;

[0014] The test transmitter emits a pilot light of a preset light color and a preset intensity G0 to the sailing ships in the buffer zone;

[0015] The reflected light receiver receives the reflected navigation light reflected by the hull surface and obtains the reflected navigation light intensity G1.

[0016] The test unit further includes a determination component for performing the light shielding effect test, and the light shielding effect test includes:

[0017] Comparing the intensity G1 of the reflected pilot light with the standard light intensity G2 to determine whether to perform the pilot light variable guidance;

[0018] Wherein, if the intensity G1 of the reflected pilot light is greater than or equal to the standard light intensity G2, the determination component determines that the pilot light transmitter performs the pilot light variable guidance;

[0019] If the intensity G1 of the reflected pilot light is less than the standard light intensity G2, the determination component determines that the pilot light emitter emits the pilot light of the preset light color.

[0020] The pilot light transmitter adjusts the pilot light color according to the test result of the light shielding effect test;

[0021] Wherein, if the determination component determines that the pilot light transmitter performs the pilot light variable guidance, the pilot light transmitter adjusts the pilot light color from the preset light color to the matte navigation color.

[0022] The testing unit performs the light shielding effect test twice on the matte navigation color;

[0023] If the intensity G1 of the reflected navigation light of the matte navigation color is greater than or equal to the standard light intensity G2, the calendered navigation color is changed until the intensity G1 of the reflected navigation light is less than the standard light intensity G2.

[0024] The path intersection analysis specifically includes comparing the intersection path area S1 between the initial navigation path and the warning path with the intersection threshold S0;

[0025] If the intersection path area S1 is greater than the intersection threshold S0, the path correction unit corrects the initial navigation path to reduce the intersection path area S1 until the intersection path area S1 is not greater than the intersection threshold S0, and generates the corrected path.

[0026] The path merging unit merges the navigation paths using the same light color to generate a complete navigation path;

[0027] The navigation path includes the initial navigation path and the revised path.

[0028] The adjusting unit determines the ship distance threshold according to the light color of the pilot light emitted by the pilot light transmitter;

[0029] Wherein, if the pilot light transmitter emits the pilot light of the preset light color, the adjustment unit correspondingly adopts the first ship distance threshold;

[0030] If the pilot light transmitter emits the pilot light of the matte navigation color, the adjustment unit correspondingly adopts the second ship distance threshold;

[0031] The second ship distance threshold is greater than the first ship distance threshold.

[0032] The ship distance threshold is the minimum distance between two adjacent complete navigation paths.

[0033] On the other hand, the present invention provides a method for monitoring ship safety during nighttime navigation, which is applied to a system for monitoring ship safety during nighttime navigation in any of the above-mentioned solutions, comprising:

[0034] Obtaining the initial navigation path of the sailing ship entering the navigation area;

[0035] Conduct light shielding effect tests on ships planning to enter the buffer zone, and determine whether to use pilot light guidance based on the test results;

[0036] Performing a path intersection analysis on the initial navigation path and the warning path to determine whether to perform a path correction, and generating a corrected path when it is determined that the path correction is to be performed;

[0037] For the corrected path of the ship guided by the pilot light change and the initial navigation path of the ship determined not to be guided by the pilot light change, the paths are merged according to the pilot light colors determined for the ships, so as to generate a complete navigation path for each ship in the buffer zone in the navigation area;

[0038] Determining a ship distance threshold for the navigation path according to a test result of the light shielding effect test;

[0039] The pilot light variable guidance is to adjust the color of the pilot light emitted by the hull according to the hull color of the sailing ship entering the buffer zone.

[0040] The beneficial effects of the present invention are:

[0041] The present invention provides a ship safety monitoring system and method based on night navigation. A test unit is set to perform a light shielding effect test, and pilot light variable guidance is performed according to the test result of the light shielding effect, so that the light color of the pilot light emitted by the pilot light transmitter is adapted to the color of the hull, thereby minimizing the visual interference caused by the reflected light from the hull during night navigation and improving the visibility of ships sailing at night. A path merging unit is also set to make the corrected paths of ships sailing using pilot lights of the same light color adjacent, which is beneficial to improving pilotage efficiency, optimizing waterway use, reducing navigation line of sight interference caused by pilot lights of different light colors, and thus effectively improving the navigation safety of ships sailing at night. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] Figure 1 Schematic diagram of the structure of a ship safety monitoring system based on nighttime navigation in an embodiment of the present invention;

[0043] Figure 2 A schematic diagram of the intersection of the initial navigation path and the warning path in an embodiment of the present invention;

[0044] Figure 3 A schematic diagram of the intersection of a correction path and a warning path in an embodiment of the present invention;

[0045] Figure 4 It is a flow chart of a method for monitoring ship safety during nighttime navigation according to an embodiment of the present invention.

[0046] In the figure:

[0047] 1. Initial navigation path;

[0048] 2. Warning path;

[0049] 3. Intersection paths;

[0050] 4. Correct the path. DETAILED DESCRIPTION

[0051] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0052] In the description of the present invention, it should be noted that the orientations or positional relationships indicated by the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. Among them, the terms "first position" and "second position" are two different positions, and the first feature "above", "above" and "above" the second feature include the first feature being directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. The first feature "below", "below" and "below" the second feature include the first feature being directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0053] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0054] Embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0055] When a ship is sailing at night, the pilot light may affect the visual perception of adjacent ships after being reflected by the hull, thereby reducing navigation safety. Existing ship safety monitoring systems cannot effectively handle this problem, especially when approaching ports and other ships. This embodiment innovatively proposes a method for adjusting the pilot light color by testing the light shielding effect. This test can dynamically determine the intensity of the light reflected from the hull, and adjust the pilot light color in real time according to the test results, reducing light pollution and visual interference.

[0056] See also Figure 1 As shown, the ship safety monitoring system based on night navigation provided by the present invention includes:

[0057] A collection unit, which is used to obtain an initial navigation path of a navigation vessel entering the navigation area;

[0058] A test unit, which is used to test the light shielding effect of ships planning to enter the buffer zone, and determine whether to perform pilot light guidance according to the test results;

[0059] A path correction unit, which is connected to the collection unit, is used to perform a path intersection analysis on the initial navigation path and the warning path to determine whether to perform path correction, and to generate a corrected path when it is determined to perform path correction;

[0060] A path merging unit, which is connected to the collection unit and the path correction unit, is used to merge the paths of the corrected path of the ship guided by the pilot light change and the initial navigation path of the ship not guided by the pilot light change, according to the pilot light color determined for the ship, so as to generate a complete navigation path;

[0061] An adjustment unit, which is connected to the test unit and the path merging unit, and is used to determine a ship distance threshold for the navigation path according to a test result of the light shielding effect test;

[0062] Among them, the pilot light change guidance is to adjust the color of the pilot light emitted by the hull according to the hull color of the sailing ship entering the buffer zone.

[0063] In implementation, the above-mentioned acquisition unit can be implemented by ADCP (Acoustic Doppler Current Profiler) and Automatic Ship Identification System (AIS) in the prior art, which will not be described in detail here. In addition to the acquisition unit and the test unit, the units involved in the embodiments of the present application can be implemented by software or by hardware. The described units can also be set in a processor, for example, it can be described as: a processor includes a path correction unit, a path merging unit and an adjustment unit. Among them, the names of these units do not constitute a limitation on the unit itself under certain circumstances.

[0064] The present invention provides a ship safety monitoring system and method based on night navigation. A test unit is set to perform a light shielding effect test, and a pilot light variable guidance is performed according to the test result of the light shielding effect, so that the light color of the pilot light emitted by the pilot light transmitter is adapted to the color of the hull, thereby reducing the visual interference of night navigation caused by the reflected light from the hull and improving the visibility of ships sailing at night; thereby effectively improving the navigation safety of ships sailing at night.

[0065] In detail, the ship determines the navigation path in the navigation area when operating in the buffer zone. For the outbound scenario, the buffer zone is closer to the port, and for the inbound scenario, the navigation area is closer to the port. The range of the buffer zone and the navigation area can be adaptively set according to the actual distribution of the ports.

[0066] Specifically, the test unit includes a pilot light transmitter, a test transmitter, and a reflected light receiver;

[0067] The test transmitter emits a pilot light of a preset intensity G0 and a preset light color to the sailing ship in the buffer zone; the reflected light receiver receives the reflected pilot light reflected by the hull surface and obtains the reflected pilot light intensity G1. In implementation, the pilot light transmitter and the test transmitter can be implemented by a channel light. The reflected light receiver can be implemented by a photoelectric sensor.

[0068] It is understandable that the preset intensity and preset light color can be set according to actual working conditions. The setting of preset intensity and preset light color is intended to ensure the accuracy and practicality of the test results. Optionally, the preset intensity is determined through a limited number of tests by evaluating the visual effect of pilot lights of different intensities after reflection on the hull, as well as the impact from the perspective of adjacent ships. The determined preset intensity and preset light color should satisfy the requirements of being effectively captured by the reflected light receiver without causing excessive interference to adjacent ships. Exemplarily, the preset intensity is 800lux~1200lux, the preset light color is cold white light, and the color temperature is 3300K~5300K.

[0069] The test unit also includes a determination component for performing a light shielding effect test, which includes:

[0070] Compare the intensity of the reflected pilot light G1 with the standard light intensity G2 to determine whether to perform pilot light variable guidance;

[0071] If the intensity of the reflected pilot light G1 ≥ the standard light intensity G2, the determination component determines that the pilot light transmitter performs pilot light variable guidance;

[0072] If the intensity G1 of the reflected pilot light is less than the standard light intensity G2, the determination component determines that the pilot light emitter emits the pilot light of a preset light color.

[0073] It is understandable that the standard light intensity G2 also needs to be determined through a limited number of tests to achieve a comparison effect. The intensity of the reflected pilot light G1 is less than the standard light intensity G2, and the pilot light emitter emits a pilot light of a preset light color, such as cold white light. Optionally, the standard light intensity G2 is 500 lux to 750 lux.

[0074] The pilot light transmitter adjusts the pilot light color according to the test results of the light shielding effect test;

[0075] If the determination component determines that the pilot light transmitter performs pilot light variable guidance, the pilot light transmitter adjusts the pilot light color from the preset light color to the matte navigation color.

[0076] In practice, warm white light with a color temperature of 2700K to 3200K is selected as the matte navigation color. In the visible spectrum, white light contains all colors of light, so theoretically it has a stronger reflective ability. The main difference between cold white light and warm white light is their color temperature. Cold white light has a higher color temperature and tends to be in the blue band, while warm white light has a lower color temperature and tends to be in the red band. Therefore, the pilot light change guide changes the pilot light of the preset light color emitted by the pilot light transmitter to a matte navigation color such as warm white light to reduce the reflection of the pilot light on the hull surface, thereby reducing the intensity G1 of the reflected pilot light.

[0077] For example, see Figure 2 and Figure 3 , Figure 2 is a schematic diagram of the intersection of the initial navigation path and the warning path in an embodiment of the present invention, Figure 3 A schematic diagram of the intersection of a correction path and a warning path in an embodiment of the present invention;

[0078] The path intersection analysis is to compare the intersection path 3 area S1 between the initial navigation path 1 and the warning path 2 with the intersection threshold S0;

[0079] If the intersection path 3 area S1>intersection threshold S0, the path correction unit corrects the initial navigation path 1 to reduce the intersection path 3 area S1 until the intersection path 3 area S1 is not greater than the intersection threshold S0, and generates a corrected path 4.

[0080] It can be understood that the above-mentioned warning path 2 is determined by empirical data of night-time navigation ship accidents. The accident rate that satisfies the warning path only needs to be the highest in the region, and can be set arbitrarily according to the actual situation of the port.

[0081] In implementation, in order to reduce the ship navigation flow in the areas where nighttime ship accidents are frequent and reduce the probability of ship accidents, the areas where nighttime ship accidents are frequent are marked as warning paths 2. By comparing the intersection path 3 area S1 with the intersection threshold area S0, when the intersection path 3 area S1> the intersection threshold, a path correction unit is set to correct the initial navigation path 1 to reduce the intersection path 3 area S1 until the intersection path 3 area S1 is not greater than the intersection threshold S0, thereby improving the safety of nighttime navigation of ships. It can be understood that the intersection threshold S0 is related to the area of ​​the warning path 2. Generally, the intersection threshold S0 is 20% to 40% of the warning path area.

[0082] The path merging unit merges the navigation paths using the same light color to generate a complete navigation path;

[0083] The navigation path includes an initial navigation path and a corrected path.

[0084] The path merging unit is used to make the corrected paths of ships using the same light color pilot light adjacent, which optimizes the use of waterways, is conducive to improving navigation efficiency, and reducing navigation line of sight interference caused by pilot lights between ships using different light colors as pilot lights, thereby improving the navigation safety of ships sailing at night.

[0085] The regulating unit determines the ship distance threshold according to the light color of the pilot light emitted by the pilot light transmitter;

[0086] Wherein, if the pilot light transmitter emits a pilot light of a preset light color, the adjustment unit correspondingly adopts the first ship distance threshold;

[0087] If the pilot light transmitter emits a pilot light of a matte navigation color, the adjustment unit adopts a second ship distance threshold value. The second ship distance threshold value is greater than the first ship distance threshold value. Optionally, the first ship distance threshold value is 5m to 12m and the second ship distance threshold value is 8 to 12m; the first ship distance threshold value and the second ship distance threshold value can be set accordingly according to the width and flow of the ship sailing in the port.

[0088] The ship distance threshold is the minimum distance between two adjacent complete navigation paths. It can be understood that the paths in this embodiment are all waterways with a certain width, which are merged into several paths arranged in parallel, and the ship paths are arranged in a state greater than the ship distance threshold.

[0089] In implementation, by setting a ship distance threshold to reduce the minimum distance between the actual navigation trajectory of a ship and the complete generated path caused by environmental and human factors and ensuring that there is enough interval between ships, the possibility of collision can be significantly reduced, thereby increasing the safety of ships sailing at night.

[0090] See also Figure 4As shown, this embodiment also provides a ship safety monitoring method based on nighttime navigation, which is applied to the above-mentioned ship safety monitoring system based on nighttime navigation, including:

[0091] Step S1, obtaining the initial navigation path of the sailing ship entering the navigation area;

[0092] Step S2, conducting a light shielding effect test on the sailing ships that plan to enter the buffer zone, and determining whether to perform pilot light guidance according to the test results;

[0093] Step S3, performing a path intersection analysis on the initial navigation path and the warning path to determine whether to perform path correction, and generating a corrected path when it is determined to perform path correction;

[0094] Step S4, for the corrected path of the ship guided by the pilot light change and the initial navigation path of the ship determined not to be guided by the pilot light change, the paths are merged according to the pilot light color determined for the ship, so as to generate a complete navigation path of each ship in the buffer zone in the navigation area;

[0095] Step S5, determining a ship distance threshold for the navigation path according to the test result of the light shielding effect test;

[0096] Among them, the ship distance threshold between two adjacent complete navigation paths is determined according to the test results of the light shielding effect test.

[0097] The flowchart and block diagram in the accompanying drawings illustrate the system architecture, functions and operations that may be implemented according to the system and method of various embodiments of the present application. In this regard, each box in the flowchart or block diagram can represent a module, a program segment or a part of a code, and the module, a program segment or a part of the code contains one or more executable instructions for implementing the specified logical function. It should also be noted that in some alternative implementations, the functions marked in the box can also occur in a different order from the order marked in the accompanying drawings. For example, two boxes represented in succession can actually be executed substantially in parallel, and they can sometimes be executed in the opposite order, depending on the functions involved. It should also be noted that each box in the block diagram and / or flowchart, and the combination of boxes in the block diagram and / or flowchart can be implemented with a dedicated hardware-based device that performs a specified function or operation, or can be implemented with a combination of dedicated hardware and computer instructions.

[0098] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the embodiments here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A ship safety monitoring system based on night navigation, applied to port ship navigation, characterized in that: include: A collection unit, which is used to obtain an initial navigation path of a navigation vessel entering the navigation area; A test unit, which is used to test the light shielding effect of ships planning to enter the buffer zone, and determine whether to perform pilot light guidance according to the test results; a path correction unit connected to the acquisition unit, configured to perform a path intersection analysis on the initial navigation path and the warning path to determine whether to perform path correction, and to generate a corrected path when it is determined that path correction is to be performed; A path merging unit, which is connected to the collection unit and the path correction unit, is used to merge the paths of the corrected paths of the ships guided by the pilot light change and the initial navigation paths of the ships not guided by the pilot light change according to the pilot light colors determined for the ships, so as to generate a complete navigation path of each ship in the buffer zone in the navigation area; an adjusting unit, which is connected to the testing unit and the path merging unit, and is used to determine a ship distance threshold between two adjacent complete navigation paths according to a test result of the light shielding effect test; The pilot light variable guidance is to adjust the color of the pilot light emitted by the hull according to the hull color of the sailing ship entering the buffer zone.

2. The ship safety monitoring system based on nighttime navigation according to claim 1 is characterized in that: The test unit includes a pilot light transmitter, a test transmitter and a reflected light receiver; The test transmitter emits a pilot light of a preset light color and a preset intensity G0 to the sailing ships in the buffer zone; The reflected light receiver receives the reflected navigation light reflected by the hull surface and obtains the reflected navigation light intensity G1.

3. The ship safety monitoring system based on nighttime navigation according to claim 2 is characterized in that: The test unit further includes a determination component for performing the light shielding effect test, and the light shielding effect test includes: Comparing the intensity G1 of the reflected pilot light with the standard light intensity G2 to determine whether to perform the pilot light variable guidance; Wherein, if the intensity G1 of the reflected pilot light is greater than or equal to the standard light intensity G2, the determination component determines that the pilot light transmitter performs the pilot light variable guidance; If the intensity G1 of the reflected pilot light is less than the standard light intensity G2, the determination component determines that the pilot light emitter emits the pilot light of the preset light color.

4. The ship safety monitoring system based on nighttime navigation according to claim 3 is characterized in that: The pilot light transmitter adjusts the pilot light color according to the test result of the light shielding effect test; Wherein, if the determination component determines that the pilot light transmitter performs the pilot light variable guidance, the pilot light transmitter adjusts the pilot light color from the preset light color to the matte navigation color.

5. The ship safety monitoring system based on nighttime navigation according to claim 4 is characterized in that: The testing unit performs the light shielding effect test twice on the matte navigation color; If the intensity G1 of the reflected navigation light of the matte navigation color is greater than or equal to the standard light intensity G2, the calendered navigation color is changed until the intensity G1 of the reflected navigation light is less than the standard light intensity G2.

6. The ship safety monitoring system based on nighttime navigation according to claim 5 is characterized in that: The path intersection analysis specifically includes comparing the intersection path area S1 between the initial navigation path and the warning path with the intersection threshold S0; If the intersection path area S1 is greater than the intersection threshold S0, the path correction unit corrects the initial navigation path to reduce the intersection path area S1 until the intersection path area S1 is not greater than the intersection threshold S0, and generates the corrected path.

7. The ship safety monitoring system based on nighttime navigation according to claim 6 is characterized in that: The path merging unit merges the navigation paths using the same light color to generate a complete navigation path; The navigation path includes the initial navigation path and the revised path.

8. The ship safety monitoring system based on nighttime navigation according to claim 7 is characterized in that: The adjusting unit determines the ship distance threshold according to the light color of the pilot light emitted by the pilot light transmitter; Wherein, if the pilot light transmitter emits the pilot light of the preset light color, the adjustment unit correspondingly adopts the first ship distance threshold; If the pilot light transmitter emits the pilot light of the matte navigation color, the adjustment unit correspondingly adopts the second ship distance threshold; The second ship distance threshold is greater than the first ship distance threshold.

9. The ship safety monitoring system based on nighttime navigation according to claim 8 is characterized in that: The ship distance threshold is the minimum distance between two adjacent complete navigation paths.

10. A ship safety monitoring method based on night navigation, characterized in that: The ship safety monitoring system based on nighttime navigation applied to any one of claims 1 to 9 comprises: Obtaining the initial navigation path of the sailing ship entering the navigation area; Conduct light shielding effect tests on ships planning to enter the buffer zone, and determine whether to use pilot light guidance based on the test results; Performing a path intersection analysis on the initial navigation path and the warning path to determine whether to perform a path correction, and generating a corrected path when it is determined that the path correction is to be performed; For the corrected path of the ship guided by the pilot light change and the initial navigation path of the ship determined not to be guided by the pilot light change, the paths are merged according to the pilot light colors determined for the ships, so as to generate a complete navigation path for each ship in the buffer zone in the navigation area; Determining a ship distance threshold between two adjacent complete navigation paths according to the test result of the light shielding effect test; The pilot light variable guidance is to adjust the color of the pilot light emitted by the hull according to the hull color of the sailing ship entering the buffer zone.

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