A method for determining the vertical position of float-over installation using a laser screed

Abstract

The application discloses a kind of vertical position determination methods of float-over installation using laser leveling instrument, it is related to marine engineering field, the existing float-over installation vertical position determination method exists the problem that use effect is poor, including steps S1: obtaining monitoring period type classification data and period draft average, obtain ship draft preliminary monitoring data, step S2: to first type draft monitoring period and second type draft monitoring period are carried out float-over installation influence factor monitoring, according to monitoring result acquisition monitoring period analysis data, step S3: according to ship draft preliminary monitoring data and monitoring period analysis data respectively to first type draft monitoring period and second type draft monitoring period target ship are carried out float height adjustment, the accuracy of the present application can effectively improve float height determination and the safety of ship navigation.

Description

Technical Field

[0001] This invention belongs to the field of marine engineering and relates to data analysis technology. Specifically, it is a method for determining the vertical position of a float installation using a laser leveling instrument. Background Technology

[0002] Existing methods for determining the vertical position of the float installation have the following specific drawbacks:

[0003] 1. Existing methods for determining the vertical position of a float installation cannot be adapted to different aquatic environments, resulting in a lack of specificity in the selection of methods for determining the vertical position of a float.

[0004] 2. Existing methods for determining the vertical position of a floating platform often rely on the operational experience of staff and real-time changes in the aquatic environment to determine the vertical installation position of the floating platform, which results in a lack of objectivity and accuracy in the method of determining the vertical position of the floating platform.

[0005] Therefore, we propose a method for determining the vertical position of the floating support installation using a laser leveling instrument. Summary of the Invention

[0006] To address the shortcomings of existing technologies, the purpose of this invention is to provide a method for determining the vertical position of a floating support installation using a laser scanner. This invention aims to improve the relevance and accuracy of the method for determining the vertical position of a floating support installation.

[0007] To achieve the above objectives, the present invention adopts the following technical solution: a method for determining the vertical position of a floating support installation using a laser leveling instrument, comprising the following specific steps:

[0008] Step S1: Obtain the ship draft monitoring cycle, monitor the draft depth of the target ship in the ship draft monitoring cycle, and obtain the average draft depth and the undulation coefficient of the periodic water area based on the monitoring results. Obtain the threshold of the undulation coefficient of the periodic water area, compare the undulation coefficient of the periodic water area with the threshold of the undulation coefficient of the periodic water area, and divide the ship draft monitoring cycle into the first type of draft monitoring cycle and the second type of draft monitoring cycle based on the comparison results. Obtain the monitoring cycle type classification data, and define the monitoring cycle type classification data and the average draft depth of the periodic water area as the preliminary ship draft monitoring data.

[0009] Step S2: Based on the preliminary ship draft monitoring data, monitor the influencing factors of float-over installation for the first type of draft monitoring cycle and the second type of draft monitoring cycle respectively, and obtain the first float-over installation influence data and the second float-over installation influence data respectively based on the monitoring results to obtain the monitoring cycle analysis data;

[0010] Step S3: Adjust the ship's float height for the first type of draft monitoring cycle and the second type of draft monitoring cycle based on the preliminary ship draft monitoring data and the monitoring cycle analysis data.

[0011] Furthermore, step S1 also includes the following specific steps:

[0012] Step S11: When the target vessel is navigating in the water, mark the current time value as the first draft monitoring time point, mark a second draft monitoring time point in the period before the first draft monitoring time point, and the time interval between the first draft monitoring time point and the second draft monitoring time point is a first feature monitoring duration. Mark the period between the first draft monitoring time point and the second draft monitoring time point as the vessel draft depth monitoring cycle.

[0013] Step S12: Mark several draft depth monitoring time points within the ship's draft depth monitoring cycle, and name the marked draft depth monitoring time points in chronological order from the first depth monitoring time point to the a-th depth monitoring time point.

[0014] Step S13: Obtain the periodic water undulation coefficient and periodic draft variance;

[0015] Step S14: Obtain the threshold of the periodic water undulation coefficient, compare the periodic water undulation coefficient with the threshold of the periodic water undulation coefficient, and divide the ship draft monitoring cycle into the first type of draft monitoring cycle and the second type of draft monitoring cycle according to the comparison results, and obtain the monitoring cycle type classification data.

[0016] Step S15: Define the average draft of the period and the data classified by monitoring period type as the preliminary monitoring data of ship draft.

[0017] Furthermore, step S13 also includes the following specific steps:

[0018] Step S131: Use a laser level to obtain the draft values ​​of the target vessel from the first depth monitoring time point to the a-th depth monitoring time point, and obtain the first draft value to the a-th draft value.

[0019] Step S132: Calculate the average of the first draft depth value to the a-th draft depth value to obtain the average draft depth of the cycle;

[0020] Step S133: Calculate the variance of the first draft depth value to the a-th draft depth value to obtain the periodic draft depth variance;

[0021] Step S134: Compare the draft values ​​from the first draft value to the a-th draft value, mark the draft value with the largest value as the peak draft value, mark the draft value with the smallest value as the valley draft value, calculate the difference between the peak draft value and the valley draft value, and take the absolute value of the difference to obtain the periodic draft peak-valley difference.

[0022] Step S135: Calculate the periodic water undulation coefficient by combining the periodic draft variance and the periodic draft peak-to-valley difference;

[0023] The formula for calculating the undulation coefficient of a periodic water body is as follows:

[0024] Sqf = (1 + Zfc) 2 +Fgc;

[0025] Where Sqf is the periodic water undulation coefficient, Zfc is the periodic draft variance, and Fgc is the periodic draft peak-to-valley difference.

[0026] Furthermore, step S14 also includes the following specific steps:

[0027] Step S141: Obtain the periodic draft variance threshold and the periodic draft peak-to-valley difference threshold respectively;

[0028] Step S142: Calculate the periodic water area fluctuation coefficient threshold by combining the periodic draft variance threshold and the periodic draft peak-to-valley difference threshold.

[0029] The threshold for the undulation coefficient of a periodic water body is calculated using the following formula:

[0030] Sqfy=(1+Zfcy) 2 +Fgcy;

[0031] Where Sqfy is the threshold for the periodic water undulation coefficient, Zfcy is the threshold for the periodic draft variance, and Fgcy is the threshold for the periodic draft peak-to-valley difference.

[0032] Step S143: When the periodic water undulation coefficient is greater than or equal to the periodic water undulation coefficient threshold, the ship draft monitoring cycle is classified as the first type of draft monitoring cycle.

[0033] Step S144: When the periodic water undulation coefficient is less than the periodic water undulation coefficient threshold, the ship draft monitoring cycle is classified as the second type of draft monitoring cycle.

[0034] Furthermore, step S2 also includes the following specific steps:

[0035] Step S21: Obtain preliminary ship draft monitoring data, and obtain the average draft depth for each period and the data for classifying the monitoring period type based on the preliminary ship draft monitoring data;

[0036] Step S22: Based on the monitoring cycle type, the data for the first type of draft monitoring cycle and the second type of draft monitoring cycle are obtained respectively;

[0037] Step S23: Install and monitor the floats that are in the first type of draft monitoring cycle, and obtain the first float installation impact data based on the monitoring results;

[0038] Step S24: Install and monitor the floats that are in the second type of draft monitoring cycle, and obtain the second float installation impact data based on the monitoring results;

[0039] Step S25: Define the first float installation impact data and the second float installation impact data as monitoring cycle analysis data.

[0040] Furthermore, step S23 also includes the following specific steps:

[0041] Step S231: Divide the first type of draft monitoring cycle into several wave fluctuation cycles, and name the divided wave fluctuation cycles in chronological order as the first wave fluctuation cycle to the bth wave fluctuation cycle.

[0042] Step S232: Obtain the highest point of the waterline of the target vessel during the first wave fluctuation cycle, and obtain the height value corresponding to the highest point of the waterline to obtain the first waterline height value. Obtain the lowest point of the waterline of the target vessel during the first wave fluctuation cycle, and obtain the height value corresponding to the lowest point of the waterline to obtain the second waterline height value. Calculate the difference between the first waterline height value and the second waterline height value, and take the absolute value of the obtained difference to obtain the waterline height difference of the first cycle.

[0043] Step S233: Obtain the periodic draft height difference corresponding to the second wave fluctuation period to the bth wave fluctuation period respectively, and obtain the periodic draft height difference from the second period to the bth period.

[0044] Step S234: Obtain the maximum left roll angle of the target vessel during the first wave undulation cycle using a laser leveling instrument to obtain the first roll angle value; obtain the maximum right roll angle of the target vessel during the first wave undulation cycle using a laser leveling instrument to obtain the second roll angle value.

[0045] Step S235: Calculate the first roll angle value and the second roll angle value to obtain the periodic roll angle value corresponding to the first wave undulation cycle, and name it the first periodic roll angle value.

[0046] The calculation of the roll angle for the first cycle is performed using the following formula:

[0047] Hy1 = |Jd1| + |Jd2|;

[0048] Where Hy1 is the first cycle roll angle value, Jd1 is the first roll angle value, and Jd2 is the second roll angle value;

[0049] Step S236: Obtain the periodic roll angle values ​​corresponding to the second wave undulation cycle to the b-th wave undulation cycle respectively, and obtain the roll angle values ​​from the second cycle to the b-th cycle.

[0050] Step S237: Define the roll angle value of the first cycle to the roll angle value of the b-th cycle and the draft difference of the first cycle to the draft difference of the b-th cycle as the first float installation influence data.

[0051] Furthermore, step S24 also includes the following specific steps:

[0052] Step S241: Obtain the average draft depth over the period;

[0053] Step S242: Obtain the weight of the cargo loaded on the target vessel to get the mass value of the cargo loaded on the vessel;

[0054] Step S243: When the target vessel is navigating in the water, the bow of the target vessel is fixed as the first feature point. A straight line parallel to the hull is drawn through the first feature point to obtain the first feature line. The intersection of the first feature line and the stern is marked as the second feature point. The line connecting the first feature point and the second feature point is marked as the hull feature line.

[0055] Step S244: Obtain the prevailing wind direction corresponding to the second type of draft monitoring cycle through weather forecast and obtain the angle between the hull feature line and the prevailing wind direction to obtain the hull wind direction angle;

[0056] Step S245: Define the cargo mass, wind direction angle, and average periodic draft of the vessel as the second float installation impact data.

[0057] Furthermore, step S3 also includes the following specific steps:

[0058] Step S31: Obtain preliminary ship draft monitoring data, and obtain monitoring cycle type classification data based on the preliminary ship draft monitoring data;

[0059] Step S32: According to the monitoring cycle type, the data for the first type of draft monitoring cycle and the second type of draft monitoring cycle are obtained respectively;

[0060] Step S33: Obtain monitoring cycle analysis data, and obtain the first float installation impact data and the second float installation impact data based on the monitoring cycle analysis data;

[0061] Step S34: Obtain the first vertical height of the float, place the target vessel in the first type of draft monitoring cycle, and adjust the float to the first vertical height position;

[0062] Step S35: Obtain the second vertical height of the float, place the target vessel in the second type of draft monitoring cycle, and adjust the float to the second vertical height.

[0063] Furthermore, step S34 also includes the following specific steps:

[0064] Step S341: Obtain the first float installation impact data, and obtain the roll angle value from the first cycle to the roll angle value of the b-th cycle and the draft height difference from the first cycle to the b-th cycle based on the first float installation impact data.

[0065] Step S342: Calculate the first buoy height adjustment coefficient by taking the roll angle value from the first cycle to the roll angle value of the b-th cycle and the draft height difference from the first cycle to the draft height difference of the b-th cycle.

[0066] The formula for calculating the first float height adjustment coefficient is as follows:

[0067]

[0068] Where Tjx1 is the first buoyancy height adjustment coefficient, Gci is the waterline height difference in the i-th cycle, Hyi is the roll angle value in the i-th cycle, b is the quantity value corresponding to the wave undulation cycle, and s1 is the set proportional coefficient.

[0069] Step S343: Obtain the value of the floating base installation height, and calculate the vertical height of the first floating base by combining the value of the floating base installation height and the first floating base height adjustment coefficient;

[0070] The vertical height of the first buoy is calculated using the following formula:

[0071] Fgd1=Gjz×(1-Tjx1);

[0072] Where Fgd1 is the vertical height of the first float, Gjz is the reference installation height of the float, and Tjx1 is the height adjustment coefficient of the first float.

[0073] Furthermore, step S35 also includes the following specific steps:

[0074] Step S351: Obtain the impact data of the second float installation, and obtain the cargo mass value, wind direction angle and average periodic draft value of the ship based on the impact data of the second float installation.

[0075] Step S352: Calculate the second float height adjustment coefficient by taking the cargo mass value of the ship, the wind direction angle of the ship, and the average draft of the period;

[0076] The formula for calculating the second float height adjustment coefficient is as follows:

[0077]

[0078] Wherein, Tjx2 is the second float height adjustment coefficient, Csd is the cargo mass value of the ship, Cfj is the wind direction angle of the ship, Css is the average draft of the period, and s2 is the set proportional coefficient;

[0079] Step S353: Obtain the value of the floating base installation height, and calculate the vertical height of the second floating base by combining the value of the floating base installation height and the second floating base height adjustment coefficient;

[0080] The vertical height of the second buoy is calculated using the following formula:

[0081] Fgd2=Gjz×(1-Tjx2);

[0082] Where Fgd2 is the vertical height of the second float, Gjz is the reference installation height of the float, and Tjx2 is the height adjustment coefficient of the second float.

[0083] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0084] 1. This invention divides the ship's draft monitoring cycle into a first type of draft monitoring cycle and a second type of draft monitoring cycle, and adopts different methods to adjust the ship's float height during the first type of draft monitoring cycle and the second type of draft monitoring cycle, which can effectively improve the pertinence of the ship's float height adjustment method;

[0085] 2. This invention monitors the influencing factors of float-over installation based on preliminary ship draft monitoring data for both the first and second type of draft monitoring cycles. It obtains the first and second float-over installation influence data based on the monitoring results, and combines the first and second float-over installation influence data to determine the ship's float-over height. This effectively improves the accuracy of float-over height determination and the safety of ship navigation. Attached Figure Description

[0086] To facilitate understanding by those skilled in the art, the present invention will be further described below with reference to the accompanying drawings.

[0087] Figure 1 This is a diagram illustrating the implementation steps of the present invention;

[0088] Figure 2 This is a schematic diagram of the draft line of the present invention. Detailed Implementation

[0089] The technical solution of the present invention will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0090] Example 1

[0091] Please see Figure 1 This invention provides a technical solution: a method for determining the vertical position of a floating support installation using a laser leveling instrument, comprising the following specific steps:

[0092] Step S1: Obtain the ship draft monitoring cycle, monitor the draft depth of the target ship in the ship draft monitoring cycle, and obtain the average draft depth and the undulation coefficient of the periodic water area based on the monitoring results. Obtain the threshold of the undulation coefficient of the periodic water area, compare the undulation coefficient of the periodic water area with the threshold of the undulation coefficient of the periodic water area, and divide the ship draft monitoring cycle into the first type of draft monitoring cycle and the second type of draft monitoring cycle based on the comparison results. Obtain the monitoring cycle type classification data, and define the monitoring cycle type classification data and the average draft depth of the periodic water area as the preliminary ship draft monitoring data.

[0093] Step S1 further includes the following specific steps:

[0094] Step S11: When the target vessel is navigating in the water, mark the current time value as the first draft monitoring time point, mark a second draft monitoring time point in the period before the first draft monitoring time point, and the time interval between the first draft monitoring time point and the second draft monitoring time point is a first feature monitoring duration. Mark the period between the first draft monitoring time point and the second draft monitoring time point as the vessel draft depth monitoring cycle.

[0095] It should be noted here that:

[0096] In this application, the target vessel designed here is a vessel for which the vertical position of the float-over installation needs to be determined;

[0097] In this application, as the time value corresponding to the current moment changes, the first draft monitoring time point and the second draft monitoring time point also change accordingly, thereby realizing the dynamic updating of the ship's draft depth monitoring cycle.

[0098] In this application, the specific duration of the first feature monitoring designed here is 180 seconds.

[0099] Step S12: Mark several draft depth monitoring time points within the ship's draft depth monitoring cycle, and name the marked draft depth monitoring time points in chronological order from the first depth monitoring time point to the a-th depth monitoring time point.

[0100] It should be noted here that:

[0101] In this application, 'a' is designed here as the quantitative value corresponding to the time point of draft depth monitoring, and 'a' is an integer greater than 0;

[0102] Step S13: Obtain the periodic water undulation coefficient and periodic draft variance;

[0103] Step S13 further includes the following specific steps:

[0104] Step S131: Use a laser level to obtain the draft values ​​of the target vessel from the first depth monitoring time point to the a-th depth monitoring time point, and obtain the first draft value to the a-th draft value.

[0105] Step S132: Calculate the average of the first draft depth value to the a-th draft depth value to obtain the average draft depth of the cycle;

[0106] Step S133: Calculate the variance of the first draft depth value to the a-th draft depth value to obtain the periodic draft depth variance;

[0107] Step S134: Compare the draft values ​​from the first draft value to the a-th draft value, mark the draft value with the largest value as the peak draft value, mark the draft value with the smallest value as the valley draft value, calculate the difference between the peak draft value and the valley draft value, and take the absolute value of the difference to obtain the periodic draft peak-valley difference.

[0108] Step S135: Calculate the periodic water undulation coefficient by combining the periodic draft variance and the periodic draft peak-to-valley difference;

[0109] The formula for calculating the undulation coefficient of a periodic water body is as follows:

[0110] Sqf = (1 + Zfc) 2 +Fgc;

[0111] Where Sqf is the periodic water undulation coefficient, Zfc is the periodic draft variance, and Fgc is the periodic draft peak-to-valley difference.

[0112] Step S14: Obtain the threshold of the periodic water undulation coefficient, compare the periodic water undulation coefficient with the threshold of the periodic water undulation coefficient, and divide the ship draft monitoring cycle into the first type of draft monitoring cycle and the second type of draft monitoring cycle according to the comparison results, and obtain the monitoring cycle type classification data.

[0113] Step S14 also includes the following specific steps:

[0114] Step S141: Obtain the periodic draft variance threshold and the periodic draft peak-to-valley difference threshold respectively;

[0115] It should be noted here that:

[0116] In this application, the periodic draft variance threshold and the periodic draft peak-valley difference threshold are designed as the maximum periodic draft variance and the maximum periodic draft peak-valley difference corresponding to the second type of draft monitoring cycle, respectively.

[0117] Step S142: Calculate the periodic water area fluctuation coefficient threshold by combining the periodic draft variance threshold and the periodic draft peak-to-valley difference threshold.

[0118] The threshold for the undulation coefficient of a periodic water body is calculated using the following formula:

[0119] Sqfy=(1+Zfcy) 2 +Fgcy;

[0120] Where Sqfy is the threshold for the periodic water undulation coefficient, Zfcy is the threshold for the periodic draft variance, and Fgcy is the threshold for the periodic draft peak-to-valley difference.

[0121] Step S143: When the periodic water undulation coefficient is greater than or equal to the periodic water undulation coefficient threshold, the ship draft monitoring cycle is classified as the first type of draft monitoring cycle.

[0122] Step S144: When the periodic water undulation coefficient is less than the periodic water undulation coefficient threshold, the ship draft monitoring cycle is classified into the second type of draft monitoring cycle.

[0123] Step S15: Define the average draft of the period and the data classified by monitoring period type as the preliminary monitoring data of ship draft.

[0124] Step S2: Based on the preliminary ship draft monitoring data, monitor the influencing factors of float-over installation for the first type of draft monitoring cycle and the second type of draft monitoring cycle respectively, and obtain the first float-over installation influence data and the second float-over installation influence data respectively based on the monitoring results to obtain the monitoring cycle analysis data;

[0125] Step S2 further includes the following specific steps:

[0126] Step S21: Obtain preliminary ship draft monitoring data, and obtain the average draft depth for each period and the data for classifying the monitoring period type based on the preliminary ship draft monitoring data;

[0127] Step S22: Based on the monitoring cycle type, the data for the first type of draft monitoring cycle and the second type of draft monitoring cycle are obtained respectively;

[0128] Step S23: Install and monitor the floats that are in the first type of draft monitoring cycle, and obtain the first float installation impact data based on the monitoring results;

[0129] Step S23 further includes the following specific steps:

[0130] Step S231: Divide the first type of draft monitoring cycle into several wave fluctuation cycles, and name the divided wave fluctuation cycles in chronological order as the first wave fluctuation cycle to the bth wave fluctuation cycle.

[0131] It should be noted here that:

[0132] In this application, b is designed here as the quantitative value corresponding to the wave undulation period, and b is an integer greater than 0;

[0133] In this application, the time interval between two consecutive times when a wave causes the target vessel to reach its highest waterline is defined as a wave undulation cycle;

[0134] Step S232: Please refer to Figure 2 The system obtains the highest point of the waterline of the target vessel during the first wave fluctuation cycle, and obtains the corresponding height value to get the first waterline height value. The system also obtains the lowest point of the waterline of the target vessel during the first wave fluctuation cycle, and obtains the corresponding height value to get the second waterline height value. The system calculates the difference between the first and second waterline height values, and takes the absolute value of the difference to obtain the waterline height difference for the first cycle.

[0135] Step S233: Obtain the periodic draft height difference corresponding to the second wave fluctuation period to the bth wave fluctuation period respectively, and obtain the periodic draft height difference from the second period to the bth period.

[0136] Step S234: Obtain the maximum left roll angle of the target vessel during the first wave undulation cycle using a laser leveling instrument to obtain the first roll angle value; obtain the maximum right roll angle of the target vessel during the first wave undulation cycle using a laser leveling instrument to obtain the second roll angle value.

[0137] Step S235: Calculate the first roll angle value and the second roll angle value to obtain the periodic roll angle value corresponding to the first wave undulation cycle, and name it the first periodic roll angle value.

[0138] The calculation of the roll angle for the first cycle is performed using the following formula:

[0139] Hy1 = |Jd1| + |Jd2|;

[0140] Where Hy1 is the first cycle roll angle value, Jd1 is the first roll angle value, and Jd2 is the second roll angle value;

[0141] Step S236: Obtain the periodic roll angle values ​​corresponding to the second wave undulation cycle to the b-th wave undulation cycle respectively, and obtain the roll angle values ​​from the second cycle to the b-th cycle.

[0142] Step S237: Define the roll angle value of the first cycle to the roll angle value of the b-th cycle and the draft difference of the first cycle to the draft difference of the b-th cycle as the first float installation influence data;

[0143] Step S24: Install and monitor the floats that are in the second type of draft monitoring cycle, and obtain the second float installation impact data based on the monitoring results;

[0144] Step S24 further includes the following specific steps:

[0145] Step S241: Obtain the average draft depth over the period;

[0146] Step S242: Obtain the weight of the cargo loaded on the target vessel to get the mass value of the cargo loaded on the vessel;

[0147] Step S243: When the target vessel is navigating in the water, the bow of the target vessel is fixed as the first feature point. A straight line parallel to the hull is drawn through the first feature point to obtain the first feature line. The intersection of the first feature line and the stern is marked as the second feature point. The line connecting the first feature point and the second feature point is marked as the hull feature line.

[0148] Step S244: Obtain the prevailing wind direction corresponding to the second type of draft monitoring cycle through weather forecast and obtain the angle between the hull feature line and the prevailing wind direction to obtain the hull wind direction angle;

[0149] Step S245: Define the cargo mass, wind direction angle, and average periodic draft of the vessel as the second float-over installation impact data;

[0150] Step S25: Define the first float installation impact data and the second float installation impact data as monitoring cycle analysis data.

[0151] Step S3: Adjust the ship's float height for the first type of draft monitoring cycle and the second type of draft monitoring cycle based on the preliminary ship draft monitoring data and the monitoring cycle analysis data respectively;

[0152] Step S3 further includes the following specific steps:

[0153] Step S31: Obtain preliminary ship draft monitoring data, and obtain monitoring cycle type classification data based on the preliminary ship draft monitoring data;

[0154] Step S32: According to the monitoring cycle type, the data for the first type of draft monitoring cycle and the second type of draft monitoring cycle are obtained respectively;

[0155] Step S33: Obtain monitoring cycle analysis data, and obtain the first float installation impact data and the second float installation impact data based on the monitoring cycle analysis data;

[0156] Step S34: Obtain the first vertical height of the float, place the target vessel in the first type of draft monitoring cycle, and adjust the float to the first vertical height position;

[0157] Step S34 also includes the following specific steps:

[0158] Step S341: Obtain the first float installation impact data, and obtain the roll angle value from the first cycle to the roll angle value of the b-th cycle and the draft height difference from the first cycle to the b-th cycle based on the first float installation impact data.

[0159] Step S342: Calculate the first buoy height adjustment coefficient by taking the roll angle value from the first cycle to the roll angle value of the b-th cycle and the draft height difference from the first cycle to the draft height difference of the b-th cycle.

[0160] The formula for calculating the first float height adjustment coefficient is as follows:

[0161]

[0162] Where Tjx1 is the first buoyancy height adjustment coefficient, Gci is the waterline height difference in the i-th cycle, Hyi is the roll angle value in the i-th cycle, b is the quantity value corresponding to the wave undulation cycle, and s1 is the set proportional coefficient.

[0163] It should be noted here that:

[0164] In this application, the waterline height difference of the i-th cycle can be any one of the waterline height differences of the first cycle to the waterline height difference of the b-th cycle, and the roll angle value of the i-th cycle can be the roll angle value of the first cycle to the roll angle value of the b-th cycle.

[0165] In this application, the proportional coefficient s1 mentioned here specifically functions to adjust the first buoyancy height adjustment coefficient to a value between 0 and 1;

[0166] Step S343: Obtain the value of the floating base installation height, and calculate the vertical height of the first floating base by combining the value of the floating base installation height and the first floating base height adjustment coefficient;

[0167] The vertical height of the first buoy is calculated using the following formula:

[0168] Fgd1=Gjz×(1-Tjx1);

[0169] Wherein, Fgd1 is the vertical height of the first float, Gjz is the reference installation height of the float, and Tjx1 is the height adjustment coefficient of the first float;

[0170] It should be noted here that:

[0171] The reference installation height for the buoy designed here is the installation height for the buoy in calm, waveless waters.

[0172] Step S35: Obtain the second vertical height of the float, place the target vessel in the second type of draft monitoring cycle, and adjust the float to the second vertical height;

[0173] Step S35 also includes the following specific steps:

[0174] Step S351: Obtain the impact data of the second float installation, and obtain the cargo mass value, wind direction angle and average periodic draft value of the ship based on the impact data of the second float installation.

[0175] Step S352: Calculate the second float height adjustment coefficient by taking the cargo mass value of the ship, the wind direction angle of the ship, and the average draft of the period;

[0176] The formula for calculating the second float height adjustment coefficient is as follows:

[0177]

[0178] Wherein, Tjx2 is the second float height adjustment coefficient, Csd is the cargo mass value of the ship, Cfj is the wind direction angle of the ship, Css is the average draft of the period, and s2 is the set proportional coefficient;

[0179] It should be noted here that:

[0180] In this application, the proportional coefficient s2 mentioned here specifically functions to adjust the first buoyancy height adjustment coefficient to a value between 0 and 1;

[0181] Step S353: Obtain the value of the floating base installation height, and calculate the vertical height of the second floating base by combining the value of the floating base installation height and the second floating base height adjustment coefficient;

[0182] The vertical height of the second buoy is calculated using the following formula:

[0183] Fgd2=Gjz×(1-Tjx2);

[0184] Where Fgd2 is the vertical height of the second float, Gjz is the reference installation height of the float, and Tjx2 is the height adjustment coefficient of the second float.

[0185] In this application, if a corresponding calculation formula appears, the above calculation formula is a dimensionless calculation. The weighting coefficient, proportional coefficient and other coefficients in the formula are set to quantify each parameter to obtain a result value. The size of the weighting coefficient and proportional coefficient is only required to not affect the proportional relationship between the parameter and the result value.

[0186] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to any specific implementation. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention.

Claims

1. A method for determining the vertical position of a floating support installation using a laser leveling instrument, characterized in that, include: Step S1: Obtain the ship draft monitoring cycle, monitor the draft depth of the target ship in the ship draft monitoring cycle, and obtain the average draft depth and the undulation coefficient of the periodic water area based on the monitoring results. Obtain the threshold of the undulation coefficient of the periodic water area, compare the undulation coefficient of the periodic water area with the threshold of the undulation coefficient of the periodic water area, and divide the ship draft monitoring cycle into the first type of draft monitoring cycle and the second type of draft monitoring cycle based on the comparison results. Obtain the monitoring cycle type classification data, and define the monitoring cycle type classification data and the average draft depth of the periodic water area as the preliminary ship draft monitoring data. Step S2: Based on the preliminary ship draft monitoring data, monitor the influencing factors of float-over installation for the first type of draft monitoring cycle and the second type of draft monitoring cycle respectively, and obtain the first float-over installation influence data and the second float-over installation influence data respectively based on the monitoring results to obtain the monitoring cycle analysis data; Step S3: Adjust the float height of the target vessel in the first type of draft monitoring cycle and the second type of draft monitoring cycle according to the preliminary monitoring data and the monitoring cycle analysis data. Step S2 further includes the following specific steps: Step S21: Obtain preliminary ship draft monitoring data, and obtain the average draft depth for each period and the data for classifying the monitoring period type based on the preliminary ship draft monitoring data; Step S22: Based on the monitoring cycle type, the data for the first type of draft monitoring cycle and the second type of draft monitoring cycle are obtained respectively; Step S23: Install and monitor the floats that are in the first type of draft monitoring cycle, and obtain the first float installation impact data based on the monitoring results; Step S24: Install and monitor the floats that are in the second type of draft monitoring cycle, and obtain the second float installation impact data based on the monitoring results; Step S25: Define the first float installation impact data and the second float installation impact data as monitoring cycle analysis data; Step S23 further includes the following specific steps: Step S231: Divide the first type of draft monitoring cycle into several wave fluctuation cycles, and name the divided wave fluctuation cycles in chronological order as the first wave fluctuation cycle to the bth wave fluctuation cycle. Step S232: Obtain the highest point of the waterline of the target vessel during the first wave fluctuation cycle, obtain the height value corresponding to the highest point of the waterline to obtain the first waterline height value, obtain the lowest point of the waterline of the target vessel during the first wave fluctuation cycle, obtain the height value corresponding to the lowest point of the waterline to obtain the second waterline height value, calculate the difference between the first waterline height value and the second waterline height value, and take the absolute value of the obtained difference to obtain the waterline height difference of the first cycle; Step S233: Obtain the periodic draft height difference corresponding to the second wave fluctuation period to the bth wave fluctuation period respectively, and obtain the periodic draft height difference from the second period to the bth period. Step S234: Obtain the maximum left roll angle of the target vessel during the first wave undulation cycle using a laser leveling instrument to obtain the first roll angle value; obtain the maximum right roll angle of the target vessel during the first wave undulation cycle using a laser leveling instrument to obtain the second roll angle value. Step S235: Calculate the first roll angle value and the second roll angle value to obtain the periodic roll angle value corresponding to the first wave undulation cycle, and name it the first periodic roll angle value. The calculation of the roll angle for the first cycle is performed using the following formula: ； Where Hy1 is the first cycle roll angle value, Jd1 is the first roll angle value, and Jd2 is the second roll angle value; Step S236: Obtain the periodic roll angle values ​​corresponding to the second wave undulation cycle to the b-th wave undulation cycle respectively, and obtain the roll angle values ​​from the second cycle to the b-th cycle. Step S237: Define the roll angle value of the first cycle to the roll angle value of the b-th cycle and the draft difference of the first cycle to the draft difference of the b-th cycle as the first float installation influence data; Step S24 further includes the following specific steps: Step S241: Obtain the average draft depth over the period; Step S242: Obtain the numerical value of the cargo loaded on the target vessel to obtain the mass value of the cargo loaded on the vessel; Step S243: When the target vessel is navigating in the water, the bow of the target vessel is fixed as the first feature point. A straight line parallel to the hull is drawn through the first feature point to obtain the first feature line. The intersection of the first feature line and the stern is marked as the second feature point. The line connecting the first feature point and the second feature point is marked as the hull feature line. Step S244: Obtain the prevailing wind direction corresponding to the second type of draft monitoring cycle through weather forecast, obtain the angle value between the hull feature line and the prevailing wind direction, and obtain the hull wind direction angle; Step S245: Define the cargo mass, wind direction angle, and average periodic draft of the vessel as the second float installation impact data.

2. The method for determining the vertical position of a floating support installation using a laser leveling instrument according to claim 1, characterized in that, Step S1 further includes the following specific steps: Step S11: While the target vessel is navigating in the water, mark a vessel draft monitoring cycle; Step S12: Mark the first depth monitoring time point to the a-th depth monitoring time point within the ship's draft monitoring cycle; Step S13: Obtain the periodic water undulation coefficient and periodic draft variance; Step S14: Obtain the threshold of the periodic water undulation coefficient, compare the periodic water undulation coefficient with the threshold of the periodic water undulation coefficient, and divide the ship draft monitoring cycle into the first type of draft monitoring cycle and the second type of draft monitoring cycle according to the comparison results, and obtain the monitoring cycle type classification data. Step S15: Define the average draft of the period and the data classified by monitoring period type as the preliminary monitoring data of ship draft.

3. The method for determining the vertical position of a floating support installation using a laser leveling instrument according to claim 2, characterized in that, Step S13 further includes the following specific steps: Step S131: Use a laser level to obtain the draft values ​​of the target vessel from the first depth monitoring time point to the a-th depth monitoring time point, and obtain the first draft value to the a-th draft value. Step S132: Calculate the average of the first draft depth value to the a-th draft depth value to obtain the average draft depth of the cycle; Step S133: Calculate the variance of the first draft depth value to the a-th draft depth value to obtain the periodic draft depth variance; Step S134: Compare the draft values ​​from the first draft value to the a-th draft value, mark the draft value with the largest value as the peak draft value, mark the draft value with the smallest value as the valley draft value, calculate the difference between the peak draft value and the valley draft value, and take the absolute value of the difference to obtain the periodic draft peak-valley difference. Step S135: Calculate the periodic water undulation coefficient by combining the periodic draft variance and the periodic draft peak-to-valley difference; The formula for calculating the undulation coefficient of a periodic water body is as follows: ； Where Sqf is the periodic water undulation coefficient, Zfc is the periodic draft variance, and Fgc is the periodic draft peak-to-valley difference.

4. The method for determining the vertical position of a floating support installation using a laser leveling instrument according to claim 2, characterized in that, Step S14 also includes the following specific steps: Step S141: Obtain the periodic draft variance threshold and the periodic draft peak-to-valley difference threshold respectively; Step S142: Calculate the periodic water area fluctuation coefficient threshold by combining the periodic draft variance threshold and the periodic draft peak-to-valley difference threshold. Step S143: When the periodic water undulation coefficient is greater than or equal to the periodic water undulation coefficient threshold, the ship draft monitoring cycle is classified as the first type of draft monitoring cycle. Step S144: When the periodic water undulation coefficient is less than the periodic water undulation coefficient threshold, the ship draft monitoring cycle is classified as the second type of draft monitoring cycle.

5. The method for determining the vertical position of a floating support installation using a laser leveling instrument according to claim 1, characterized in that, Step S3 further includes the following specific steps: Step S31: Obtain preliminary ship draft monitoring data, and obtain monitoring cycle type classification data based on the preliminary ship draft monitoring data; Step S32: According to the monitoring cycle type, the data for the first type of draft monitoring cycle and the second type of draft monitoring cycle are obtained respectively; Step S33: Obtain monitoring cycle analysis data, and obtain the first float installation impact data and the second float installation impact data based on the monitoring cycle analysis data; Step S34: Obtain the first vertical height of the float, place the target vessel in the first type of draft monitoring cycle, and adjust the float to the first vertical height position; Step S35: Obtain the second vertical height of the float, place the target vessel in the second type of draft monitoring cycle, and adjust the float to the second vertical height.

6. The method for determining the vertical position of a floating support installation using a laser leveling instrument according to claim 5, characterized in that, Step S34 also includes the following specific steps: Step S341: Obtain the first float installation impact data, and obtain the roll angle value from the first cycle to the roll angle value of the b-th cycle and the draft height difference from the first cycle to the b-th cycle based on the first float installation impact data. Step S342: Calculate the first buoy height adjustment coefficient by taking the roll angle value from the first cycle to the roll angle value of the b-th cycle and the draft height difference from the first cycle to the draft height difference of the b-th cycle. The formula for calculating the first float height adjustment coefficient is as follows: ； Where Tjx1 is the first buoyancy height adjustment coefficient, Gci is the waterline height difference in the i-th cycle, Hyi is the roll angle value in the i-th cycle, b is the quantity value corresponding to the wave undulation cycle, and s1 is the set proportional coefficient. Step S343: Obtain the value of the floating base installation height, and calculate the vertical height of the first floating base by combining the value of the floating base installation height and the first floating base height adjustment coefficient; The vertical height of the first buoy is calculated using the following formula: ； Where Fgd1 is the vertical height of the first float, Gjz is the reference installation height of the float, and Tjx1 is the height adjustment coefficient of the first float.

7. The method for determining the vertical position of a floating support installation using a laser leveling instrument according to claim 5, characterized in that, Step S35 also includes the following specific steps: Step S351: Obtain the impact data of the second float installation, and obtain the cargo mass value, wind direction angle and average periodic draft value of the ship based on the impact data of the second float installation. Step S352: Calculate the second float height adjustment coefficient by taking the cargo mass value of the ship, the wind direction angle of the ship, and the average draft of the period; The formula for calculating the second float height adjustment coefficient is as follows: ； Wherein, Tjx2 is the second float height adjustment coefficient, Csd is the cargo mass value of the ship, Cfj is the wind direction angle of the ship, Css is the average draft of the period, and s2 is the set proportional coefficient; Step S353: Obtain the value of the floating base installation height, and calculate the vertical height of the second floating base by combining the value of the floating base installation height and the second floating base height adjustment coefficient; The vertical height of the second buoy is calculated using the following formula: ； Where Fgd2 is the vertical height of the second float, Gjz is the reference installation height of the float, and Tjx2 is the height adjustment coefficient of the second float.

Images