Automatic navigation obstruction analysis method and system based on channel depth value

Abstract

The invention discloses an automatic navigation obstruction analysis method and system based on a channel water depth value, and the method comprises the following steps: a collection end collects the channel water depth value, and transmits the channel water depth value to a server end; a captain inputs ship estimated ship estimated gravity through the user side, and the ship estimated gravity is sent to the server side; and the server side calculates the minimum water depth value required by ship passing according to the ship estimated gravity, and judges whether the ship passes through or not through the channel by comparing the minimum water depth value with the judged channel water depth value. According to the navigation obstruction analysis method, in the actual analysis process, the minimum water depth value needed by the ship is calculated mainly according to the estimated ship gravity of the current ship, whether the ship can pass or not is judged according to the channel water depth value collected by the collection end and the minimum water depth value, the analysis speed is high, the automation degree is high, and the accuracy of navigation obstruction analysis is improved. And whether the water depth affects passage or not is analyzed through the estimated gravity of different ships, so that the safety is higher.

Description

Technical Field

[0001] The present invention relates to the technical field of digital waterway technology, and in particular to an automatic navigation obstruction analysis method and system based on waterway depth values. Background Art

[0002] Navigation obstruction analysis is an important process in waterway regulation projects. According to the requirements of waterway navigation standards, the actual navigation obstruction area of ​​the waterway is extracted by separating the water depth area in the waterway where the water depth is less than the water depth for maintaining navigation and the water depth area where the water depth is greater than or equal to the water depth for maintaining navigation. The navigation obstruction area refers to the area in the waterway where the water depth is less than the water depth for maintaining navigation, where ships cannot navigate normally. It not only affects navigation safety, limits the improvement of the navigation capacity and grade of the waterway, but also seriously restricts the sustainable development of inland waterway transportation. Navigation obstruction analysis provides navigation function for water transportation by extracting the area in the waterway where the water depth is less than the water depth for maintaining navigation - the actual navigation obstruction area of ​​the waterway. The analysis result is an important basis for trenching analysis in waterway dredging projects.

[0003] The traditional navigation obstruction analysis method plans the waterway by manually drawing the waterway line on the topographic map based on the actual terrain characteristics of the waterway and relying on experience. The waterway obstruction area is manually extracted according to the water depth point value on the waterway topographic map to realize the navigation obstruction analysis. This analysis method has a lot of manual participation and a large workload. The task cycle of completing the navigation obstruction analysis of a waterway topographic map is long, the work efficiency is low, and the accuracy of the navigation obstruction analysis result is low. Summary of the invention

[0004] The purpose of the present invention is to provide an automated navigation obstruction analysis method and system based on waterway depth values ​​to address the deficiencies in the background technology.

[0005] In order to achieve the above object, the present invention provides the following technical solution: an automated navigation obstruction analysis method based on waterway depth values, the analysis method comprising the following steps:

[0006] S1: The collection end collects the channel water depth value, and the channel water depth value is sent to the server end;

[0007] S2: The captain inputs the estimated ship gravity through the user end, and the estimated ship gravity is sent to the server end;

[0008] S3: The server calculates the minimum water depth required for the ship to pass according to the estimated gravity of the ship, and determines whether the ship can pass the channel or not by comparing the minimum water depth with the water depth of the channel, and sends the command to the user end for display.

[0009] In a preferred embodiment, the calculation formula for the estimated gravity of the ship is:

[0010] W=C+H+R

[0011] Where W is the estimated weight of the ship, C is the initial weight of the ship, H is the estimated weight of the cargo, and R is the estimated weight of the personnel.

[0012] In a preferred embodiment, the server end is provided with an impassable water depth threshold, the collection end collects the water depth value of the waterway, the server end compares the water depth value of the waterway with the impassable water depth threshold, and if the water depth value of the waterway is less than the impassable water depth threshold, the server end issues an impassable instruction to the user end.

[0013] In a preferred embodiment, after the server receives the water depth value of the waterway sent by the acquisition end, the water depth value of the waterway increases the warning value, and the calculation formula of the water depth value for safe passage of ships is:

[0014] T w =Y+0.5

[0015] Where, T w is the water depth for safe passage of ships, and Y is the water depth of the channel.

[0016] In a preferred embodiment, the collection of water depth values ​​of the channel by the collection end includes the following steps:

[0017] S1.1: After the host device wakes up the pressure sensor, the pressure sensor collects water depth values ​​for 1 minute and then enters a dormant state;

[0018] S1.2: After the control host device obtains the water depth value, it processes the data and encapsulates the water depth information into a message, which is uploaded to the server through the communication module;

[0019] S1.3: When a communication module fails to send data to the server, the control host device saves the water depth message locally, and then sends the locally stored message to the server after the communication link is restored.

[0020] In a preferred embodiment, the collection end includes a pressure sensor, a control host device, GPS positioning, data storage and data communication. The pressure sensor is used to collect water depth data, the control host device is used to receive and process water depth data, the GPS positioning is used to locate the position of the collection end, and the data storage and data communication are respectively used for local storage of data and sending data to the server.

[0021] In a preferred embodiment, a pressure sensor is installed at the bottom of the channel riverbed. As the water depth of the channel increases, the voltage signal of the pressure sensor also increases. After filtering, A / D conversion, and water depth optimization by the control host device, accurate water depth information is obtained. Combined with the collection time information of GPS positioning, it is encapsulated into a water depth message and sent to the server through the communication module.

[0022] In a preferred embodiment, considering the corrosiveness of inland rivers and ocean currents, in this embodiment, a MIK-P260 silicon pressure ceramic diaphragm liquid level sensor is selected, which has good corrosion resistance, high stability and reliability.

[0023] In a preferred embodiment, the MIK-P260 silicon pressure ceramic diaphragm liquid level sensor is based on the principle of piezoresistive effect. After ion implantation and micromachining, a silicon sensitive element integrating force sensing and force-electric conversion detection is manufactured. The pressure acts directly on the ceramic diaphragm of the sensor, causing the diaphragm to produce a micro-displacement proportional to the medium pressure, causing the resistance value of the sensor to change, and converting and outputting a standard measurement signal corresponding to this pressure.

[0024] In a preferred embodiment, the pressure sensor detection step is: water pressure acts on the ceramic diaphragm of the sensor, causing the diaphragm to produce a micro-displacement proportional to the medium pressure, causing the resistance value of the sensor to change, and converting and outputting a standard measurement signal corresponding to this pressure. The calculation formula of the voltage and the water depth value of the channel is:

[0025] h x = k(V x -V 0 )+h 0

[0026] h x is the channel water depth, V x is the voltage measured by the sensor in water depth, V 0 is the voltage measured by the sensor in the air, k is the linear coefficient between the voltage and the water depth, h 0 To adjust the parameters.

[0027] In a preferred embodiment, the server calculates the minimum water depth required for the ship to pass according to the estimated gravity of the ship, and the calculation formula for the draft value of the ship is:

[0028] V=G / ρg

[0029] Where V is the displacement volume, G is the estimated gravity of the ship, ρ is the density of the liquid, and g is the gravity constant, which is 9.8N / kg according to the international standard.

[0030] The draft value E is:

[0031] E=V / D

[0032] Where D is the cross section of the hull.

[0033] The present invention also provides an automated navigation obstruction analysis system based on waterway depth values, comprising a collection module, an input module, a communication module and a processing module;

[0034] The acquisition module collects the channel depth value, and the user inputs the estimated gravity of the ship through the input module. The channel depth value and the estimated gravity of the ship are remotely sent to the processing module through the communication module. The processing module calculates the minimum water depth value required for the ship to pass according to the estimated gravity of the ship, and compares the minimum water depth value with the channel depth value to determine whether the ship can pass the channel or not.

[0035] In a preferred embodiment, the water depth value of the channel is greater than or equal to the minimum water depth value, and ships can pass through the channel. The water depth value of the channel is less than the minimum water depth value, and the channel is not passable.

[0036] In the above technical solution, the technical effects and advantages provided by the present invention are:

[0037] 1. In the actual analysis process of the navigation obstruction analysis method of the present invention, the minimum water depth value required by the ship is mainly calculated based on the estimated ship gravity of the current ship, and whether the ship can pass is judged based on the channel water depth value and the minimum water depth value collected by the collection end. Not only is the analysis speed fast, but also the degree of automation is high. In addition, the estimated gravity of different ships is used to analyze whether the water depth affects the passage, which is safer.

[0038] 2. The present invention sets an impassable water depth threshold in the server end. After the collection end collects the current water depth value of the channel, if the current water depth value of the channel is less than the impassable water depth threshold, it is judged that the ship is impassable. At this time, the server end does not need to calculate the minimum water depth value required for the ship to pass according to the estimated gravity of the ship, and can directly issue an impassable instruction to the user end, which makes the processing efficiency of the analysis method higher.

[0039] 3. The present invention adds a warning value to the water depth value of the waterway. The water depth value for safe passage of ships is equal to the water depth value of the waterway plus the warning value. By adding the warning value to the water depth value of the waterway, the safety of ship passage can be further guaranteed. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0041] Figure 1 The flowchart of the navigation obstruction analysis method of the present invention is shown in FIG.

[0042] Figure 2 It is a system module diagram of the present invention.

[0043] Figure 3The following is a workflow diagram of the server side of the present invention.

[0044] Figure 4 Schematic diagram of the relationship between voltage and water depth in the present invention. DETAILED DESCRIPTION

[0045] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are 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.

[0046] Example 1

[0047] See also Figure 1 As shown, the present embodiment describes an automated navigation obstruction analysis method based on waterway depth values, the analysis method comprising the following steps:

[0048] The collection end collects the water depth value of the channel, and the water depth value of the channel is sent to the server end;

[0049] The captain inputs the estimated ship weight through the user end, and the estimated ship weight is sent to the server end;

[0050] The estimated weight of the ship is equal to the initial weight of the ship plus the estimated weight of the cargo and the estimated weight of the personnel. The specific calculation formula is as follows:

[0051] W=C+B+R

[0052] Where W is the estimated weight of the ship, C is the initial weight of the ship, B is the estimated weight of the cargo, and R is the estimated weight of the personnel. The initial weight of the ship is the initial estimated weight of the ship, which is recorded after the ship is manufactured. The estimated weight of the cargo is the sum of the weighing weights of multiple cargoes before they are loaded on board. B = B 1 +B 2 +,...,+B n The estimated gravity of personnel is the number of personnel on board multiplied by the average gravity of a single person, R = S*A, S is the number of personnel on board, A is the average gravity of a single person. Considering the presence of elderly people, children, adult men and women on the ship, the average gravity of a single person can be set in the range of 70-100kg.

[0053] See also Figure 3As shown, the server side calculates the minimum water depth value required for the ship to pass according to the estimated gravity of the ship, and judges whether the channel is passable by comparing the minimum water depth value with the channel water depth value. If the channel water depth value is greater than or equal to the minimum water depth value, the channel is passable. If the channel water depth value is less than the minimum water depth value, the channel is not passable. The server side generates a pass instruction and a no pass instruction through the above steps, and sends the instructions to the user side for display. In the actual analysis process, the navigation obstruction analysis method mainly calculates the minimum water depth value required for the ship according to the estimated ship estimated gravity of the current ship, and judges whether the ship is passable according to the channel water depth value and the minimum water depth value collected by the collection end. Not only is the analysis speed fast, but also the degree of automation is high. In addition, the estimated gravity of different ships is used to analyze whether the water depth affects the passage, which is safer.

[0054] The server has an inaccessible water depth threshold. After the acquisition end collects the current channel water depth value, if the current channel water depth value is less than the inaccessible water depth threshold, it is judged that the ship is inaccessible. At this time, the server does not need to calculate the minimum water depth value required for the ship to pass according to the estimated gravity of the ship, and can directly issue an inaccessible instruction to the user end, which makes the processing efficiency of the analysis method higher;

[0055] The impassable water depth threshold is calculated based on the ship with the largest estimated gravity among all ships passing through the channel. After calculating the draft of the ship with the largest estimated gravity, the impassable water depth threshold is calculated by subtracting 1-1.5m of water depth from this draft.

[0056] In addition, in order to ensure the stable passage of ships, a warning value is usually added to the water depth value of the channel. According to the actual conditions of ship passage disclosed in the prior art, the warning value can be set to 0.5m, that is, the water depth value for safe passage of ships is equal to the water depth value of the channel plus the warning value. The calculation formula is as follows:

[0057] T w =Y+0.5

[0058] Where, T w is the water depth value for safe passage of ships, Y is the water depth value of the channel. By adding a warning value to the water depth value of the channel, the safety of ship passage can be further guaranteed.

[0059] Example 2

[0060] The collection of water depth values ​​by the collection end includes the following steps:

[0061] After the control host device wakes up the pressure sensor, the pressure sensor collects the water depth value for 1 minute and then enters the sleep state. After the control host device obtains the water depth value, it performs various processing on the data and encapsulates the water depth information into a message, which is uploaded to the server through the communication module. If a failure occurs in the communication module to the server, the control host device saves the water depth message locally, and after the communication link is restored, the locally stored message is sent to the server. The collection end collects the water depth value of the channel through the above steps, which not only has low power consumption, but also has a data storage function during the data collection process, which effectively avoids loss during data transmission, thereby ensuring stable data transmission.

[0062] The pressure sensor is installed at the bottom of the channel riverbed. As the water depth of the channel increases, the voltage signal of the pressure sensor also increases. After filtering, A / D conversion and water depth optimization by the control host equipment, accurate water depth information is obtained. Combined with the collection time information of GPS positioning, it is encapsulated into a water depth message and sent to the server through the communication module.

[0063] Considering the corrosiveness of inland river and ocean currents, in this embodiment, a MIK-P260 silicon pressure ceramic diaphragm liquid level sensor is selected, which has good corrosion resistance, high stability and reliability.

[0064] The MIK-P260 silicon pressure ceramic diaphragm liquid level sensor is based on the principle of piezoresistive effect. Through ion implantation and micro-machining technology, it is a silicon sensitive element that integrates force sensitivity and force-electric conversion detection. The pressure acts directly on the ceramic diaphragm of the sensor, causing the diaphragm to produce a micro-displacement proportional to the medium pressure, causing the resistance value of the sensor to change, and converting and outputting a standard measurement signal corresponding to this pressure.

[0065] After the MIK-P260 silicon pressure ceramic diaphragm liquid level sensor is installed, it should be calibrated immediately to ensure the measurement accuracy of the water depth value.

[0066] See also Figure 4 As shown in the figure, the calculation formula of voltage and water depth in MIK-P260 silicon pressure ceramic diaphragm liquid level sensor is:

[0067] h x = k(V x -V 0 )+h 0

[0068] h x is the channel water depth, V x is the voltage measured by the sensor in water depth, V 0 is the voltage measured by the sensor in the air, k is the linear coefficient between the voltage and the water depth, h 0To adjust the parameters, as long as it is immersed in the water flow of the channel, the voltage signal V output by the liquid level sensor x Changes followed.

[0069] The A / D conversion circuit uses the MCP3426 chip, which is a dual-channel, low-noise, high-precision A / D converter with the characteristics of high integration, fast response, and strong anti-interference ability. It can significantly improve the accuracy and reliability of the entire system.

[0070] (1) GPS positioning: The GPS positioning function is used to obtain the location of the acquisition end, which is convenient for subsequent maintenance and retrieval by personnel. The GPS timing function is used to obtain Beijing time, which solves the problem that the acquisition end cannot restore the system time after emergencies such as system downtime and battery exhaustion. GPS positioning uses the NEO-M8N dual-mode navigation module that combines low power consumption and high performance. It can capture, track, and extract navigation data of GPS / BD signals, and output the data through a serial port. The navigation accuracy is 167dBM.

[0071] (2) Data storage: To avoid the situation where the server is missing data at a certain moment due to the interruption of the remote communication link and the failure of data transmission, a memory is reserved in the control host device. If a remote communication interruption is found, the field acquisition end will store the data in the local memory. After the communication link is restored to normal, the data in the memory will be transmitted to the server.

[0072] (3) Control host equipment: Since the field data collection end is generally outdoors in a harsh environment, the temperature performance and stability requirements of the control host equipment are relatively high. Based on the work experience of other similar projects, the control host equipment uses the ARK-2230L industrial computer produced by Advantech Technology. The industrial computer is equipped with a J1900 CPU and has an operating temperature of -20-70°C. The industrial computer serves as the "brain" of the field data collection end. One end is connected to the sensor equipment and the other end is connected to the communication equipment. Its solid-state hard disk is used for local data storage.

[0073] (4) Data communication: The industrial-grade F2C16 device produced by Four-Faith Corporation is used for data communication. The F2C16 device has 4G communication function, low power consumption (minimum power consumption 5mA), rich interfaces (RS232 interface, RS485 interface, ADC interface, I / O interface), transparent transmission and other characteristics. It is widely used in the Internet of Things industry chain. The RS232 of the F2C16 device is connected to the control host device, and the water depth message generated by the control host device is transparently transmitted to the server.

[0074] Example 3

[0075] The server calculates the minimum water depth required for the ship to pass according to the estimated gravity of the ship, and determines whether the channel is passable by comparing the minimum water depth value with the channel water depth value. If the channel water depth value is greater than or equal to the minimum water depth value, the channel is passable; if the channel water depth value is less than the minimum water depth value, the channel is not passable.

[0076] The passing water depth of a ship refers to the distance from the lowest point of the ship to the riverbed. When the ship is sailing, the actual water depth in the waters where the ship is located minus the draft value of the ship at this time is the surplus water depth of the ship. When the ship passes through the channel lock, the port and shipping management personnel will detect the draft value of the ship. The calculation formula for the draft value of the ship is:

[0077] V=G / ρg

[0078] Where V is the displacement volume, G is the estimated gravity of the ship, ρ is the density of the liquid, and g is the gravity constant, which is 9.8 N / kg according to the international standard.

[0079] Assuming the cross section of the hull is D, the draft value E is:

[0080] E=V / D.

[0081] The draft of traditional ships is mainly detected by manual visual inspection. When using manual visual inspection to detect the draft of ships, multiple staff members are required to log on to the ship to be tested and detect multiple groups of ship draft values ​​through the water level scale on the hull. The detection between multiple observers is carried out independently. After the detection is completed, multiple groups of draft values ​​are counted and the average value of the ship's draft is calculated. The average value is the ship's draft value. However, the manual visual inspection method has great limitations, and during manual inspection, the ship needs to be on the waterway. Not only is the measurement accuracy low, but there is also a risk of running aground.

[0082] In the present invention, the water depth value of the channel is first collected by the collection end, and then the captain inputs the estimated gravity of the ship through the user end and sends it to the server end. The server end receives the estimated gravity of the ship and calculates the current draft value of the ship, and then compares the draft value with the water depth value of the channel. If the draft value is less than the water depth value of the channel, it means that the ship can pass. If the draft value is greater than the water depth value of the channel, it means that the ship cannot pass. Intelligent analysis is used to give an early warning of whether the ship can pass the channel. Not only is the detection accuracy high, but also it is prevented that the ship enters the channel in advance, and the safety is good.

[0083] In actual situations, if a ship is unable to pass through a waterway, the following methods are mainly used to solve the problem:

[0084] First, the ship returns directly. However, if the ship is mainly a tourist ship, returning directly will cause dissatisfaction among passengers.

[0085] The second is that when the ship is at the lock, part of the cargo is unloaded to reduce the weight of the ship, thereby reducing the draft value of the ship.

[0086] Example 4

[0087] See also Figure 2 As shown, the automatic navigation obstruction analysis system based on waterway depth values ​​described in this embodiment includes a collection module, an input module, a communication module and a processing module.

[0088] in,

[0089] Collection module: used to collect water depth values ​​of waterways;

[0090] Input module: The user inputs the estimated gravity of the ship through the input module;

[0091] The estimated weight of the ship is equal to the initial weight of the ship plus the estimated weight of the cargo and the estimated weight of the personnel. The specific calculation formula is as follows:

[0092] W=C+H+R

[0093] Where W is the estimated weight of the ship, C is the initial weight of the ship, H is the estimated weight of the cargo, and R is the estimated weight of the personnel. The initial weight of the ship is the initial estimated weight of the ship, which is recorded after the ship is manufactured. The estimated weight of the cargo is the sum of the weighing weights of multiple cargoes before they are loaded on board. H = H 1 +H 2 +,...,+H n The estimated gravity of personnel is the number of personnel on board multiplied by the average gravity of a single person, R = S*A, S is the number of personnel on board, A is the average gravity of a single person. Considering the presence of elderly people, children, adult men and women on the ship, the average gravity of a single person can be set in the range of 70-100kg.

[0094] Communication module: used to remotely send the channel water depth values ​​and ship estimated gravity in the acquisition module and input module to the processing module.

[0095] Processing module: used to process the channel water depth value and the estimated gravity of the ship, calculate the minimum water depth value required for the ship to pass according to the estimated gravity of the ship, and judge whether the channel is passable by comparing the minimum water depth value with the channel water depth value. If the channel water depth value is greater than or equal to the minimum water depth value, the channel is passable; if the channel water depth value is less than the minimum water depth value, the channel is not passable.

[0096] The processing module includes a calculation unit and a judgment unit;

[0097] Calculation unit: used to calculate the minimum water depth required for the ship to pass according to the estimated gravity of the ship;

[0098] Judgment unit: used to judge whether the waterway is passable by comparing the minimum water depth value with the waterway depth value. If the waterway depth value is greater than or equal to the minimum water depth value, the waterway is passable; if the waterway depth value is less than the minimum water depth value, the waterway is not passable.

[0099] The above embodiments can be implemented in whole or in part by software, hardware, firmware or any other combination. When implemented by software, the above embodiments can be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions or computer programs. When the computer instructions or computer programs are loaded or executed on a computer, the process or function described in the embodiment of the present application is generated in whole or in part. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions can be stored in a computer-readable storage medium, or transmitted from one computer-readable storage medium to another computer-readable storage medium. For example, the computer instructions can be transmitted from one website site, computer, server or data center to another website site, computer, server or data center by wired (e.g., infrared, wireless, microwave, etc.). The computer-readable storage medium can be any available medium that a computer can access or a data storage device such as a server or data center containing one or more available media sets. The available medium can be a magnetic medium (e.g., a floppy disk, a hard disk, a tape), an optical medium (e.g., a DVD), or a semiconductor medium. The semiconductor medium can be a solid-state hard disk.

[0100] It should be understood that the term "and / or" in this article is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. A and B can be singular or plural. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship, but it may also indicate an "and / or" relationship. Please refer to the context for specific understanding.

[0101] In this application, "at least one" means one or more, and "plurality" means two or more. "At least one of the following" or similar expressions refers to any combination of these items, including any combination of single or plural items. For example, at least one of a, b, or c can mean: a, b, c, ab, ac, bc, or abc, where a, b, c can be single or multiple.

[0102] It should be understood that in the various embodiments of the present application, the size of the serial numbers of the above-mentioned processes does not mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.

[0103] Those of ordinary skill in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of this application.

[0104] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0105] In the several embodiments provided in the present application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. For example, the device embodiments described above are only schematic. For example, the division of the units is only a logical function division. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0106] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0107] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0108] If the functions are implemented in the form of software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application can be essentially or partly embodied in the form of a software product that contributes to the prior art. The computer software product is stored in a storage medium, including several instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the methods described in each embodiment of the present application. The aforementioned storage medium includes: various media that can store program codes, such as USB flash drives, mobile hard disks, read-only memories (ROM), random access memories (RAM), magnetic disks or optical disks.

[0109] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art who is familiar with the present technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. An automated navigation obstruction analysis method based on waterway depth values, characterized by: The analytical method comprises the following steps: S1: The collection end collects the channel water depth value, and the channel water depth value is sent to the server end; S2: The captain inputs the estimated ship gravity through the user end, and the estimated ship gravity is sent to the server end; S3: The server calculates the minimum water depth required for the ship to pass according to the estimated gravity of the ship, and determines whether the ship can pass the channel or not by comparing the minimum water depth with the water depth of the channel, and sends the command to the user end for display.

2. The method for analyzing navigation obstructions based on waterway depth values ​​according to claim 1, characterized in that: The calculation formula for the estimated ship gravity is: W=C+H+R Where W is the estimated weight of the ship, C is the initial weight of the ship, H is the estimated weight of the cargo, and R is the estimated weight of the personnel.

3. The method for analyzing navigation obstructions based on waterway depth values ​​according to claim 2, characterized in that: The server end is provided with an impassable water depth threshold, the collection end collects the water depth value of the waterway, the server end compares the water depth value of the waterway with the impassable water depth threshold, and if the water depth value of the waterway is less than the impassable water depth threshold, the server end issues an impassable instruction to the user end.

4. The method for analyzing navigation obstructions based on waterway depth values ​​according to claim 3 is characterized by: After the server receives the channel depth value sent by the acquisition end, the channel depth value increases the warning value, and the calculation formula of the safe passage depth value of the ship is: T w =Y+0.5 Where, T w is the water depth for safe passage of ships, and Y is the water depth of the channel.

5. The method for analyzing navigation obstructions based on waterway depth values ​​according to claim 1, characterized in that: The collection of water depth values ​​by the collection end includes the following steps: S1.1: After the host device wakes up the pressure sensor, the pressure sensor collects water depth values ​​for 1 minute and then enters a dormant state; S1.2: After the control host device obtains the water depth value, it processes the data and encapsulates the water depth information into a message, which is uploaded to the server through the communication module; S1.3: When a communication module fails to send data to the server, the control host device saves the water depth message locally, and then sends the locally stored message to the server after the communication link is restored.

6. The method for analyzing navigation obstructions based on waterway depth values ​​according to claim 5, characterized in that: The collection end includes a pressure sensor, a control host device, GPS positioning, data storage and data communication. The pressure sensor is used to collect water depth data, the control host device is used to receive and process water depth data, the GPS positioning is used to locate the position of the collection end, and the data storage and data communication are respectively used for local storage of data and sending data to the server end.

7. The method for analyzing navigation obstructions based on waterway depth values ​​according to claim 6, characterized in that: The detection steps of the pressure sensor are as follows: the water pressure acts on the ceramic diaphragm of the sensor, causing the diaphragm to produce a micro-displacement proportional to the medium pressure, causing the resistance value of the sensor to change, and converting and outputting a standard measurement signal corresponding to this pressure. The calculation formula of the voltage and the water depth value of the channel is: h x =k(V x -V0)+h0 h x is the channel water depth, V x is the voltage measured by the sensor in water depth, V0 is the voltage measured by the sensor in air, k is the linear coefficient between voltage and water depth, and h0 is the adjustment parameter.

8. The method for analyzing navigation obstructions based on waterway depth values ​​according to claim 1, characterized in that: The server calculates the minimum water depth required for the ship to pass according to the estimated gravity of the ship. The calculation formula for the draft value of the ship is: V=G / ρg Where V is the displacement volume, G is the estimated gravity of the ship, ρ is the density of the liquid, and g is the gravity constant, which is 9.8N / kg according to the international standard. The draft value E is: E=V / D Where D is the cross section of the hull.

9. An automated navigation obstruction analysis system based on waterway depth values, the analysis system being used to implement an automated navigation obstruction analysis method based on waterway depth values ​​as claimed in any one of claims 1 to 8, characterized in that: It includes an acquisition module, an input module, a communication module and a processing module; The acquisition module collects the channel depth value, and the user inputs the estimated gravity of the ship through the input module. The channel depth value and the estimated gravity of the ship are remotely sent to the processing module through the communication module. The processing module calculates the minimum water depth value required for the ship to pass according to the estimated gravity of the ship, and compares the minimum water depth value with the channel depth value to determine whether the ship can pass the channel or not.

10. The automatic navigation obstruction analysis system based on waterway depth value according to claim 9, characterized in that: If the water depth of the channel is greater than or equal to the minimum water depth, the ship can pass through the channel. If the water depth of the channel is less than the minimum water depth, the channel is not passable.

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