Ship deck surface deformation monitoring method based on multi-point tilt detection

Abstract

The present invention provides a ship deck deformation monitoring method based on multi-point tilt detection, belonging to the field of deformation monitoring technology. Multiple tilt detection devices are arranged on the ship deck. The tilt detection devices include a horizontal bubble displacement sensor that detects the position change of the horizontal bubble in real time and calculates the offset. A mathematical model of the ship's heel and pitch angles is constructed based on the multi-point offset data. Coordinate transformation is used to eliminate the heel and pitch components and extract the local true deformation between the detection points. The deformation data is compared with a safety threshold to implement structural status assessment and abnormality warning. Thus, by fusion calculation of the horizontal bubble offsets of the multi-point tilt detection devices, the ship's overall tilt and local deformation can be accurately separated, reducing hardware costs while improving monitoring accuracy. The method is suitable for ship structural health assessment under complex working conditions.

Description

Technical Field

[0001] The present invention belongs to the technical field of deformation monitoring, and in particular relates to a ship deck surface deformation monitoring method based on multi-point tilt detection. Background Art

[0002] The ship's deck is the core horizontal structure of the hull, usually composed of steel plates laid on the beams. It is used to cover the space inside the ship and divide it into layers. It has the functions of ensuring the strength of the hull, separating the loading area, and arranging equipment. As mentioned in the prior art patent publication number "CN222973580U", ship deck surface deformation is often avoided, so it is also necessary to monitor the ship deck surface deformation.

[0003] A ship's deck can deform locally due to load changes or structural damage, but traditional monitoring methods struggle to distinguish between the ship's overall heel / pitch and actual structural deformation, leading to the risk of misjudgment. Existing technologies often rely on costly inertial measurement units (IMUs) or complex algorithms, lacking high-precision deformation monitoring solutions based on low-cost tilt detection devices. Summary of the Invention

[0004] In order to address the defects in the existing technology, the present invention provides a ship deck surface deformation monitoring method based on multi-point tilt detection. By fusing data from multi-point tilt detection devices, the influence of the overall roll and pitch of the ship is eliminated, and the local real deformation between the detection points is extracted to achieve low-cost and high-precision structural status monitoring of the ship deck surface.

[0005] The present invention utilizes the following technical solutions.

[0006] A method for monitoring ship deck surface deformation based on multi-point tilt detection, comprising:

[0007] Step 1: Arrange the tilt detection device on the ship deck and collect data;

[0008] Step 2: Model the overall heel and pitch of the ship;

[0009] Step 3: Extract local true deformation;

[0010] Step 4: Compare deformation thresholds and conduct abnormal warnings;

[0011] In step 1, the tilt detection device includes a hollow sphere and a level bubble displacement sensor disposed in the hollow sphere, wherein the level bubble displacement sensor includes a level bubble and a displacement sensor disposed on the level bubble;

[0012] In step 2, based on the multi-point local tilt angle data, the improved least squares method is used to fit the overall heel angle of the ship The overall trim angle of the ship ;

[0013] In step 3, the overall tilt component of the ship is eliminated through coordinate transformation, and then the local deformation displacement is converted into the set Cartesian coordinate system.

[0014] Furthermore, in step 1, multiple tilt detection devices are distributed in a grid pattern in the longitudinal and transverse directions on the deck of the ship. The location of the tilt detection device is the detection point. The displacement sensors of the tilt detection devices are connected to the main control chip. The displacement sensors collect the two-dimensional coordinates of the horizontal bubble of the tilt detection device to which they belong in real time. And transmitted to the main control chip, where For the collection of The first level of the tilt detection device The horizontal axis, For the collection of The first level of the tilt detection device A vertical axis.

[0015] Furthermore, in step 1, the local tilt angle of the ship deck surface is calculated by the horizontal bubble offset, and the method includes:

[0016] Step 1-1: Define the radius of the hollow sphere of the tilt detection device Offset from horizontal bubble , ,in For the The lateral offset of the horizontal bubble of a tilt detection device, For the The longitudinal offset of the horizontal bubble of a tilt detection device;

[0017] Step 1-2: Establish a mapping relationship between the horizontal bubble offset and the local tilt angle of the ship deck surface through the inverse tangent function.

[0018] Furthermore, in step 1-1, , , using laser interferometry to measure the radius of a hollow sphere .

[0019] Furthermore, in step 1-2, the local inclination angle of the ship deck surface includes the longitudinal inclination angle of the ship deck surface and the transverse inclination angle of the ship deck surface. The mapping relationship between the longitudinal inclination angle of the ship deck surface and the transverse inclination angle of the ship deck surface is:

[0020] ,

[0021] in Indicates that based on The longitudinal tilt angle of the deck surface of the ship with a tilt detection device; Indicates that based on The transverse tilt angle of the ship's deck surface is measured by a tilt detection device.

[0022] Furthermore, in step 2, the improved least squares method is used to fit the overall heel angle of the ship The overall trim angle of the ship The methods include:

[0023] Step 2-1: Set up The longitudinal tilt angle of the deck surface of the ship based on the first tilt detection device is The linear equations for the transverse tilt angle of the deck of a ship with a tilt detection device are:

[0024]

[0025] in Indicates the The normalized distance between the abscissa of the center of the hollow sphere of each tilt detection device and the abscissa of the center of gravity of the ship, Indicates the a normalized distance between the longitudinal coordinate of the center of the hollow sphere of each tilt detection device and the longitudinal coordinate of the center of gravity of the ship;

[0026] Step 2-2: Substitute the multi-point local tilt angle data into the linear equation system to construct the least squares optimization objective function :

[0027] ,in is the number of tilt detection devices;

[0028] Then Find the partial derivative and set it equal to zero to obtain the closed-form solution , and thus the overall heel angle of the ship in the closed solution is obtained The overall trim angle of the ship :

[0029] ;

[0030] The matrix Depend on and Composition, vector Contains multi-point local tilt angle data.

[0031] Furthermore, in step 2-1, in and Respectively The distance between the horizontal coordinate of the center of the hollow sphere of the first tilt detection device and the horizontal coordinate of the center of gravity of the ship is The distance between the longitudinal coordinate of the center of the hollow sphere of each tilt detection device and the longitudinal coordinate of the center of gravity of the ship, and The maximum transverse dimension and the maximum longitudinal dimension of the deck surface are respectively;

[0032] In step 2-2, based on all Normalization parameters and , build Order matrix :

[0033] ;

[0034] Will be based on The longitudinal tilt angle of the deck of a ship with a tilt detection device Based on the The transverse tilt angle of the deck of a ship with a tilt detection device Fill in the vectors one by one :

[0035] .

[0036] Further, in step 3, The longitudinal inclination angle of the deck surface of the ship with the first inclination detection device is The original tilt angle formed by the transverse tilt angle of the deck surface of the ship with a tilt detection device , the coordinate transformation is used to eliminate the overall tilt component of the ship and the first The transverse tilt angle of the ship's deck with a tilt detection device After eliminating the overall tilt component of the ship The longitudinal tilt angle of the deck of a ship with a tilt detection device ,Right now:

[0037] ;

[0038] Then, the first The transverse tilt angle of the deck of a ship with a tilt detection device After eliminating the overall tilt component of the ship The longitudinal tilt angle of the deck of a ship with a tilt detection device Converted to the local deformation displacement in the set Cartesian coordinate system ,in Based on the The lateral displacement of the local deformation displacement of a tilt detection device, Based on the The longitudinal displacement of the local deformation displacement of the tilt detection device is The calculation formula is:

[0039]

[0040] in Indicates the The horizontal distance between the center of the hollow sphere of a tilt detection device and the set Cartesian coordinate system.

[0041] Furthermore, in step 4, the safety threshold of local deformation of the ship deck surface is set , , and Respectively represent the safety threshold of the transverse displacement of the local deformation displacement of the ship deck surface and the safety threshold of the longitudinal displacement of the local deformation displacement of the ship deck surface. If there is or If the condition is If there is abnormal deformation in the area of ​​the ship deck where the tilt detection device is located, the main control chip will send the first The tilt detection device can be used to display abnormal deformation in the area of ​​the ship deck where the tilt detection device is located, so as to provide an abnormal warning.

[0042] Furthermore, the ship deck surface deformation monitoring method based on multi-point tilt detection also includes:

[0043] Step 5: Store the data:

[0044] All based on The longitudinal tilt angle of the deck of a ship with a tilt detection device , based on The transverse tilt angle of the deck of a ship with a tilt detection device and local deformation displacement The data is stored in real time in the database of the external memory connected to the main control chip.

[0045] The beneficial effects of the present invention are as follows:

[0046] The present invention deploys multiple tilt detection devices on a ship's deck. These devices include a water bubble displacement sensor that detects changes in the water bubble's position in real time and calculates its offset. Based on multi-point offset data, a mathematical model of the ship's heel and pitch angles is constructed. Coordinate transformation eliminates the heel and pitch components, extracting the local true deformation between the detection points. This deformation data is then compared with safety thresholds to enable structural health assessment and anomaly warning. This fusion calculation of the water bubble offsets from the multi-point tilt detection devices allows for precise separation of the ship's overall tilt from local deformation, reducing hardware costs while improving monitoring accuracy. This system is suitable for assessing ship structural health under complex operating conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] Figure 1 This is a flow chart of the ship deck surface deformation monitoring method based on multi-point tilt detection in the present invention. DETAILED DESCRIPTION

[0048] To make the objectives, technical solutions, and advantages of the present invention more clear, the following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely express the technical solutions of the present invention. The embodiments expressed in this application are only part of the embodiments of the present invention, not all of the embodiments. Based on the spirit of the present invention, other embodiments obtained by ordinary technicians in this field without making creative work are all within the scope of protection of the present invention.

[0049] like Figure 1 As shown, a method for monitoring ship deck surface deformation based on multi-point tilt detection includes:

[0050] Step 1: Arrange the tilt detection device on the ship deck and collect data;

[0051] In a preferred but non-limiting embodiment of the present invention, in step 1, multiple tilt detection devices are distributed in a grid pattern in the longitudinal and transverse directions on the deck of the ship. The locations where the tilt detection devices are located are detection points. The displacement sensors of the tilt detection devices are connected to a main control chip, which can be a single-chip microcomputer or an FPGA chip. The displacement sensors collect the two-dimensional coordinates of the horizontal bubble of the tilt detection device to which they belong in real time. And transmitted to the main control chip, where For the collection of The first level of the tilt detection device The horizontal axis, For the collection of The first level of the tilt detection device A vertical axis. The numbers set for each tilt detection device are incremented by 1 starting from 1. It is a timestamp, which is the serial number of the two-dimensional coordinate collected by the displacement sensor (the serial number starts from 1 and increases by 1).

[0052] In a preferred but non-limiting embodiment of the present invention, in step 1, the tilt detection device includes a hollow sphere and a level bubble displacement sensor arranged in the hollow sphere, and the level bubble displacement sensor includes a level bubble and a displacement sensor (such as a photoelectric sensor or a capacitive displacement sensor) arranged on the level bubble.

[0053] In a preferred but non-limiting embodiment of the present invention, in step 1, the local tilt angle of the ship deck surface is calculated by the horizontal bubble offset. By quantifying the physical meaning of the parameters, the controllability of the local tilt angle calculation error is improved, supporting the high-precision deployment of the ship structural health monitoring system. The method includes:

[0054] The purpose of calculating the local tilt angle by the horizontal bubble offset is to clarify the meaning of the parameters used to calculate the local tilt angle by the horizontal bubble offset, establish the mathematical relationship between the radius of the hollow sphere, the horizontal bubble offset and the local tilt angle of the ship deck surface, and provide a theoretical basis for displacement sensor calibration, error analysis and deformation monitoring.

[0055] Step 1-1: Define the radius of the hollow sphere of the tilt detection device Offset from horizontal bubble , ,in For the The lateral offset of the horizontal bubble of a tilt detection device, For the The longitudinal offset of the horizontal bubble of a tilt detection device;

[0056] In a preferred but non-limiting embodiment of the present invention, in step 1-1, , , using laser interferometry to measure the radius of a hollow sphere , the calibration error must be controlled within ±0.1 to ensure that the calculation error of the local inclination angle of the ship deck surface is less than 0.01 ° .

[0057] Radius of the hollow sphere Determines the equilibrium position of the level bubble in a non-tilted state. Directly affects the sensitivity of the calculation of the local tilt angle of the ship's deck surface: Sensitivity ∝ , smaller A higher value will improve the resolution of the local tilt angle of the ship's deck surface, but may limit the maximum measurable tilt range. The lateral displacement of the horizontal bubble of the tilt detection device It reflects the displacement of the horizontal bubble on the transverse axis of the ship. The longitudinal offset of the horizontal bubble of the tilt detection device It reflects the displacement of the horizontal bubble on the longitudinal axis of the ship.

[0058] Step 1-2: Establish a mapping relationship between the horizontal bubble offset and the local tilt angle of the ship deck surface through the inverse tangent function.

[0059] In a preferred but non-limiting embodiment of the present invention, in step 1-2, the local inclination angle of the ship deck surface includes the longitudinal inclination angle of the ship deck surface and the transverse inclination angle of the ship deck surface. The mapping relationship between the longitudinal inclination angle of the ship deck surface and the transverse inclination angle of the ship deck surface is:

[0060] ,

[0061] in Indicates that based on The longitudinal tilt angle of the ship's deck surface is measured by a tilt detection device. This parameter reflects the longitudinal tilt of the ship's deck surface, with positive and negative values ​​corresponding to bow tilting and stern tilting respectively. Indicates that based on The lateral tilt angle of the ship's deck surface is measured by a tilt detection device. This parameter reflects the degree of lateral tilt of the ship's deck surface, and its positive and negative values ​​correspond to port side tilting and starboard side tilting respectively.

[0062] Step 2: Model the overall heel and pitch of the ship;

[0063] In a preferred but non-limiting embodiment of the present invention, in step 2, based on the multi-point local tilt angle data (that is, the local tilt angle data of multiple detection points), the improved least squares method is used to fit the overall heel angle of the ship. The overall trim angle of the ship .

[0064] In a preferred but non-limiting embodiment of the present invention, in step 2, the improved least squares method is used to fit the overall heel angle of the ship. The overall trim angle of the ship The methods include:

[0065] Step 2-1: Set up The longitudinal tilt angle of the deck surface of the ship based on the first tilt detection device is The linear equations for the transverse tilt angle of the deck of a ship with a tilt detection device are:

[0066]

[0067] in Indicates the The normalized distance between the abscissa of the center of the hollow sphere of each tilt detection device and the abscissa of the center of gravity of the ship, Indicates the The normalized distance between the longitudinal coordinate of the center of the hollow sphere of each tilt detection device and the longitudinal coordinate of the center of gravity of the ship; the coordinate system of the center of gravity of the ship and the coordinate system of the center of the hollow sphere are the same as the coordinate system of the two-dimensional coordinate of the horizontal bubble, both of which are ship coordinate systems.

[0068] Step 2-2: Substitute the multi-point local tilt angle data into the linear equation system to construct the least squares optimization objective function :

[0069] ,in is the number of tilt detection devices, which can eliminate the interference of local deformation on global tilt estimation;

[0070] Then Find the partial derivative and set it equal to zero to obtain the closed-form solution , and thus the overall heel angle of the ship in the closed solution is obtained The overall trim angle of the ship :

[0071] ;

[0072] The matrix Depend on and Composition, vector Contains multi-point local tilt angle data.

[0073] In a preferred but non-limiting embodiment of the present invention, in step 2-1, in and Respectively The distance between the horizontal coordinate of the center of the hollow sphere of the first tilt detection device and the horizontal coordinate of the center of gravity of the ship is The distance between the longitudinal coordinate of the center of the hollow sphere of each tilt detection device and the longitudinal coordinate of the center of gravity of the ship, and The maximum transverse dimension and the maximum longitudinal dimension of the deck surface are respectively;

[0074] In step 2-2, based on all Normalization parameters and , build Order matrix :

[0075] ;

[0076] The rows of the matrix are arranged alternately according to the transverse tilt equation and the longitudinal tilt equation, and every two rows correspond to the tilt angle measurement model of a detection point.

[0077] Will be based on The longitudinal tilt angle of the deck of a ship with a tilt detection device Based on the The transverse tilt angle of the deck of a ship with a tilt detection device Fill in the vectors one by one :

[0078] .

[0079] vector The dimension is , and the matrix The number of rows is the same.

[0080] Step 3: Extract local true deformation;

[0081] In a preferred but non-limiting embodiment of the present invention, in step 3, The longitudinal inclination angle of the deck surface of the ship with the first inclination detection device is The original tilt angle formed by the transverse tilt angle of the deck surface of the ship with a tilt detection device , the coordinate transformation is used to eliminate the overall tilt component of the ship and the first The transverse tilt angle of the deck of a ship with a tilt detection device After eliminating the overall tilt component of the ship The longitudinal tilt angle of the deck of a ship with a tilt detection device ,Right now:

[0082] ;

[0083] Then, the first The transverse tilt angle of the deck of a ship with a tilt detection device After eliminating the overall tilt component of the ship The longitudinal tilt angle of the deck of a ship with a tilt detection device Converted to the local deformation displacement in the set Cartesian coordinate system ,in Based on the The lateral displacement of the local deformation displacement of a tilt detection device, Based on the The longitudinal displacement of the local deformation displacement of the tilt detection device is The calculation formula is:

[0084]

[0085] in Indicates the The horizontal distance between the center of the hollow sphere of each tilt detection device and the set Cartesian coordinate system is used to calculate the deformation displacement.

[0086] Step 4: Compare deformation thresholds and conduct abnormal warnings;

[0087] In a preferred but non-limiting embodiment of the present invention, in step 4, a safety threshold of local deformation of the ship deck surface is set. , , and They represent the safety thresholds of the transverse displacement of the local deformation displacement of the ship deck surface and the safety thresholds of the longitudinal displacement of the local deformation displacement of the ship deck surface respectively. The safety thresholds of the transverse displacement of the local deformation displacement of the ship deck surface and the safety thresholds of the longitudinal displacement of the local deformation displacement of the ship deck surface can be determined according to specific experiments or historical experience data. If there is or If the condition is If there is abnormal deformation in the area of ​​the ship deck where the tilt detection device is located, the main control chip will send the first The tilt detection device can be used to display abnormal deformation in the area of ​​the ship deck where the tilt detection device is located, so as to provide an abnormal warning.

[0088] The ship deck surface deformation monitoring method based on multi-point tilt detection also includes:

[0089] In a preferred but non-limiting embodiment of the present invention, step 5: performing data storage, namely:

[0090] All based on The longitudinal tilt angle of the deck of a ship with a tilt detection device , based on The transverse tilt angle of the deck of a ship with a tilt detection device and local deformation displacement The data is stored in real time in a database in an external memory (which can be a flash memory) connected to the main control chip to support historical data backtracking and trend analysis.

[0091] The beneficial effects of the present invention are as follows:

[0092] The present invention deploys multiple tilt detection devices on a ship's deck. These devices include a water bubble displacement sensor that detects changes in the water bubble's position in real time and calculates its offset. Based on multi-point offset data, a mathematical model of the ship's heel and pitch angles is constructed. Coordinate transformation eliminates the heel and pitch components, extracting the local true deformation between the detection points. This deformation data is then compared with safety thresholds to enable structural health assessment and anomaly warning. This fusion calculation of the water bubble offsets from the multi-point tilt detection devices allows for precise separation of the ship's overall tilt from local deformation, reducing hardware costs while improving monitoring accuracy. This system is suitable for assessing ship structural health under complex operating conditions.

[0093] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, ordinary technicians in the relevant field should understand that the specific implementation methods of the present invention can still be modified or replaced by equivalents. Any modification or equivalent replacement that does not deviate from the spirit and scope of the present invention should be covered within the protection space of the claims of the present invention.

Claims

1. A method for monitoring ship deck deformation based on multi-point tilt detection, characterized in that: include: Step 1: Arrange the tilt detection device on the ship deck and collect data; Step 2: Model the overall heel and pitch of the ship; Step 3: Extract local true deformation; Step 4: Compare deformation thresholds and conduct abnormal warnings; In step 1, the tilt detection device includes a hollow sphere and a level bubble displacement sensor disposed in the hollow sphere, wherein the level bubble displacement sensor includes a level bubble and a displacement sensor disposed on the level bubble; In step 2, based on the multi-point local tilt angle data, the improved least squares method is used to fit the overall heel angle of the ship The overall trim angle of the ship ; In step 3, the overall tilt component of the ship is eliminated by coordinate transformation, and then the local deformation displacement is converted into the set Cartesian coordinate system; In step 1, multiple tilt detection devices are distributed in a grid pattern in the longitudinal and transverse directions on the deck of the ship. The location of the tilt detection device is the detection point. The displacement sensors of the tilt detection device are connected to the main control chip. The displacement sensors collect the two-dimensional coordinates of the horizontal bubble of the tilt detection device to which they belong in real time. And transmitted to the main control chip, where For the collection of The first level of the tilt detection device The horizontal axis, For the collection of The first level of the tilt detection device vertical coordinates; In step 1, the local tilt angle of the ship deck is calculated by the horizontal bubble offset, and the method includes: Step 1-1: Define the radius of the hollow sphere of the tilt detection device Offset from horizontal bubble , ,in For the The lateral offset of the horizontal bubble of a tilt detection device, For the The longitudinal offset of the horizontal bubble of a tilt detection device; Step 1-2: Establish a mapping relationship between the horizontal bubble offset and the local tilt angle of the ship deck surface through the inverse tangent function; In step 1-1, , , using laser interferometry to measure the radius of a hollow sphere ; In step 1-2, the local tilt angle of the ship deck surface includes the longitudinal tilt angle of the ship deck surface and the transverse tilt angle of the ship deck surface. The mapping relationship between the longitudinal tilt angle of the ship deck surface and the transverse tilt angle of the ship deck surface is: ， ； in Indicates that based on The longitudinal tilt angle of the deck surface of the ship with a tilt detection device; Indicates that based on The transverse tilt angle of the ship's deck surface is measured by a tilt detection device.

2. The method for monitoring ship deck surface deformation based on multi-point tilt detection according to claim 1, characterized in that: In step 2, the improved least squares method is used to fit the overall heel angle of the ship The overall trim angle of the ship The methods include: Step 2-1: Set up The longitudinal tilt angle of the deck surface of the ship based on the first tilt detection device is The linear equations for the transverse tilt angle of the deck of a ship with a tilt detection device are: ； in Indicates the The normalized distance between the abscissa of the center of the hollow sphere of each tilt detection device and the abscissa of the center of gravity of the ship, Indicates the a normalized distance between the longitudinal coordinate of the center of the hollow sphere of each tilt detection device and the longitudinal coordinate of the center of gravity of the ship; Step 2-2: Substitute the multi-point local tilt angle data into the linear equation system to construct the least squares optimization objective function : ,in is the number of tilt detection devices; Then Find the partial derivative and set it equal to zero to obtain the closed-form solution , and thus the overall heel angle of the ship in the closed solution is obtained The overall trim angle of the ship : ； The matrix Depend on and Composition, vector Contains multi-point local tilt angle data.

3. The method for monitoring ship deck surface deformation based on multi-point tilt detection according to claim 2, characterized in that: In step 2-1, in and Respectively The distance between the horizontal coordinate of the center of the hollow sphere of the first tilt detection device and the horizontal coordinate of the center of gravity of the ship is The distance between the longitudinal coordinate of the center of the hollow sphere of each tilt detection device and the longitudinal coordinate of the center of gravity of the ship, and The maximum transverse dimension and the maximum longitudinal dimension of the deck surface are respectively; In step 2-2, based on all Normalization parameters and , build Order matrix : ； Will be based on The longitudinal tilt angle of the deck of a ship with a tilt detection device Based on the The transverse tilt angle of the deck of a ship with a tilt detection device Fill in the vectors one by one : 。 4. The method for monitoring ship deck surface deformation based on multi-point tilt detection according to claim 3, characterized in that: In step 3, The longitudinal inclination angle of the deck surface of the ship with the first inclination detection device is The original tilt angle formed by the transverse tilt angle of the deck surface of the ship with a tilt detection device , the coordinate transformation is used to eliminate the overall tilt component of the ship and the first The transverse tilt angle of the deck of a ship with a tilt detection device After eliminating the overall tilt component of the ship The longitudinal tilt angle of the deck of a ship with a tilt detection device ,Right now: ； Then, the first The transverse tilt angle of the deck of a ship with a tilt detection device After eliminating the overall tilt component of the ship The longitudinal tilt angle of the deck of a ship with a tilt detection device Converted to the local deformation displacement in the set Cartesian coordinate system ,in Based on the The lateral displacement of the local deformation displacement of a tilt detection device, Based on the The longitudinal displacement of the local deformation displacement of the tilt detection device is The calculation formula is: ； in Indicates the The horizontal distance between the center of the hollow sphere of a tilt detection device and the set Cartesian coordinate system.

5. The method for monitoring ship deck surface deformation based on multi-point tilt detection according to claim 4, characterized in that: In step 4, the safety threshold of local deformation of the ship deck is set , , and Respectively represent the safety threshold of the transverse displacement of the local deformation displacement of the ship deck surface and the safety threshold of the longitudinal displacement of the local deformation displacement of the ship deck surface. If there is or If the condition is If there is abnormal deformation in the area of ​​the ship deck where the tilt detection device is located, the main control chip will send the first The tilt detection device can be used to display abnormal deformation in the area of ​​the ship deck where the tilt detection device is located, so as to provide an abnormal warning.

6. The method for monitoring ship deck surface deformation based on multi-point tilt detection according to claim 5, characterized in that: Also includes: Step 5: Store the data: All based on The longitudinal tilt angle of the deck of a ship with a tilt detection device , based on The transverse tilt angle of the deck of a ship with a tilt detection device and local deformation displacement The data is stored in real time in the database of the external memory connected to the main control chip.

Images