Real ship airflow field test system and method capable of carrying out outboard wind measurement

Abstract

The invention relates to the technical field of ship airflow field design and evaluation, in particular to a real ship airflow field test system and method capable of carrying out outboard wind measurement. According to the real ship airflow field test system capable of outboard wind measurement, through cooperation of the lightweight laser radar host, the control and display terminal, the inertial navigation positioning unit and the data processor, non-contact measurement of a ship outboard airflow field on a ship deck surface can be realized, the measurement process is safe and stable, the system position arrangement is flexible, and the measurement precision is high. The use is convenient; the actual ship airflow field test method capable of carrying out outboard wind measurement is integrally easy to realize, and can better adapt to an actual ship test environment, so that the accuracy of a test result is improved, and the ship airflow field test efficiency can be greatly improved.

Description

Technical Field

[0001] The present invention relates to the technical field of ship airflow field design and evaluation, and in particular to a real ship airflow field testing system and method capable of performing outboard wind measurement. Background Art

[0002] In the early stage, the actual ship airflow field test mainly focused on the airflow field shape of the flight deck surface. With the change of application requirements, the existing airflow field test technology is increasingly focused on the flight deck surface itself, but the measurement equipment of the deck surface cannot be stably measured outside the ship.

[0003] The existing flight deck airflow field measurement equipment at home and abroad mostly adopts the form of a pole frame, which is fixed at the measuring point during measurement, and is connected to the power supply and network. When using this type of equipment for outboard measurement, a special vehicle is required to carry and follow the ship around for stable displacement to complete data collection point by point. The existing technology has tried helicopters, parachutes, balloons and other forms, but it is difficult to maintain stability and safety. The existing wind profile radar has a certain basis for scanning the space cloud layer, but due to the wavelength and signal characteristics, this type of radar has low resolution and fixed air scanning direction, which is difficult to apply and develop in the field of airflow field testing.

[0004] LiDAR measurement technology is gradually maturing, but there is a lack of testing methods and processes that match the ship environment. In recent years, LiDAR wind measurement technology has emerged, which makes it possible to achieve "non-contact" measurement of the outboard airflow field. The scanning range and data accuracy of this technology have gradually improved, and it has basically met the index requirements of airflow field testing. However, since the existing airflow field test method does not take the outboard part of the ship into consideration, there is no LiDAR airflow field measurement method and solution that is suitable for the actual ship environment. Summary of the invention

[0005] The technical problem to be solved by the present invention is to provide a real ship airflow field testing system and method for outboard wind measurement, which can achieve stable outboard airflow field measurement of the ship, and can better adapt to the real ship testing environment, and can greatly improve the efficiency of ship airflow field testing.

[0006] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0007] 1. A real ship airflow field test system capable of outboard wind measurement

[0008] The present invention provides a real ship airflow field test system capable of outboard wind measurement, comprising a laser radar host 1, a control and display terminal 2, a data processor 3 and an inertial navigation positioning unit 4, wherein the laser radar host 1 and the inertial navigation positioning unit 4 are both arranged on the deck of the ship, and the arrangement position of the laser radar host 1 can be adjusted in real time, and the control and display terminal 2 and the data processor 3 are both installed in the ship control room;

[0009] The laser radar host 1, control and display terminal 2, data processor 3 and inertial navigation positioning unit 4 exchange information through a communication network 7, and the laser radar host 1, control and display terminal 2, data processor 3 and inertial navigation positioning unit 4 are all connected to a power supply 5 through a power supply cable 6.

[0010] Furthermore, the laser radar host 1 includes a laser wind measurement radar and a supporting base. A moving device and a position fixing device are provided at the bottom of the supporting base. The operator can adjust the layout position of the laser radar host 1 through the moving device and fix it through the position fixing device.

[0011] Furthermore, the laser wind measuring radar and the bearing base are both made of lightweight materials, so that the overall weight G of the laser wind measuring radar and the bearing base is ≤60kg.

[0012] Furthermore, the control and display terminal 2 is used to adjust the measurement direction, measurement posture and measurement distance of the laser radar host 1, and display the real-time airflow field data measured by the laser radar host 1 and the test results generated by the data processor 3.

[0013] Furthermore, the data processor 3 is used to acquire and store the measurement data of the laser radar host 1, and generate test results according to a preset data processing algorithm.

[0014] Furthermore, the inertial navigation positioning unit 4 is used to obtain the ship speed and position information to define the measurement coordinate system of the laser radar host 1.

[0015] Furthermore, the real-time airflow field data includes: airflow field instantaneous wind speed data, airflow field instantaneous wind direction data and airflow field wind speed signal-to-noise ratio data.

[0016] Furthermore, the test results include horizontal wind speed data at various heights in the entire outboard measurement area of ​​the ship.

[0017] 2. A real ship airflow field test method for outboard wind measurement

[0018] Based on the same inventive concept, the present invention also provides a real ship airflow field test method capable of outboard wind measurement, based on the real ship airflow field test system as described above, specifically comprising the following steps:

[0019] S1, confirm that the ship enters a stable navigation state;

[0020] S2, power on and status check of each device in the test system;

[0021] S3, obtaining the ship's speed and position information through an inertial navigation positioning unit to establish an airflow field measurement coordinate system;

[0022] S4, placing the laser radar host at the initial measurement position;

[0023] S5, measuring and collecting airflow field data at the initial measurement position;

[0024] S6, sending the airflow field data at the initial measurement position to a data processor via a communication network;

[0025] S7, placing the laser radar host at the next measurement position;

[0026] S8, measuring and collecting airflow field data at the current measurement position;

[0027] S9, sending the airflow field data of the current measurement position to a data processor via a communication network;

[0028] S10, repeating steps S7 to S9 until the airflow field data measurement and collection of the entire outboard measurement area are completed;

[0029] S11, the data processing machine generates a test result according to a preset data processing algorithm.

[0030] The data processing algorithm specifically includes:

[0031] 1) Obtain the wind speed signal-to-noise ratio data of the airflow field at each measurement position in the measurement area and compare it with the preset signal-to-noise ratio threshold, set the wind speed data of the measurement position that does not meet the threshold to a null value and remove it, and do not process it in the subsequent data processing process;

[0032] 2) Obtaining instantaneous wind speed data and instantaneous wind direction data of the airflow field at each measurement position at each height within the measurement area;

[0033] 3) According to the angle between the laser emission direction of the laser radar host and the horizontal direction at the current height, and the instantaneous wind direction data, the instantaneous wind speed data is converted into the horizontal wind speed data at the current height;

[0034] 4) Output the horizontal wind speed data at each height at each measurement position within the measurement area.

[0035] Compared with the prior art, the present invention has the following main advantages:

[0036] 1. The present invention provides a real ship airflow field test system that can perform outboard wind measurement. Through the cooperation of a lightweight laser radar host, a control and display terminal, an inertial navigation positioning unit and a data processor, it can realize non-contact measurement of the outboard airflow field of the ship on the deck of the ship. The measurement process is safe and stable, and the system location is flexible and easy to use.

[0037] 2. The present invention also provides a method for testing the airflow field of a real ship for outboard wind measurement, which is easy to implement as a whole and can better adapt to the actual ship test environment, thereby improving the accuracy of the test results and greatly improving the efficiency of ship airflow field testing. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 It is a schematic diagram of a real ship airflow field test system capable of outboard wind measurement in an embodiment of the present invention;

[0039] Figure 2 The present invention is a flowchart of a method for testing an airflow field on a real ship capable of performing outboard wind measurement in an embodiment of the present invention.

[0040] In the figure: 1-LiDAR host; 2-control and display terminal; 3-data processor; 4-inertial navigation positioning unit; 5-power supply; 6-power supply cable; 7-communication network. DETAILED DESCRIPTION

[0041] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0042] It should be pointed out that, according to the needs of implementation, the various steps / components described in this application can be split into more steps / components, and two or more steps / components or partial operations of steps / components can be combined into new steps / components to achieve the purpose of the present invention.

[0043] Embodiment 1: This embodiment provides a real ship airflow field test system capable of outboard wind measurement, such as Figure 1 As shown, it mainly includes: a lightweight laser radar host 1, a control and display terminal 2, a data processor 3, an inertial navigation positioning unit 4, a power supply 5, a power supply cable 6 and a communication network 7.

[0044] The laser radar host 1 and the inertial navigation positioning unit 4 are both arranged on the deck of the ship, and the measurement direction of the laser radar host 1 faces outboard of the ship. The arrangement position of the laser radar host 1 can be adjusted in real time, and the control and display terminal 2 and the data processing machine 3 are both installed in the ship control room;

[0045] The laser radar host 1, control and display terminal 2, data processor 3 and inertial navigation positioning unit 4 exchange information through a communication network 7, and the laser radar host 1, control and display terminal 2, data processor 3 and inertial navigation positioning unit 4 are all connected to a power supply 5 through a power supply cable 6.

[0046] Furthermore, the laser radar host 1 includes a laser wind measurement radar and a supporting base. A moving device and a position fixing device are provided at the bottom of the supporting base. The operator can adjust the layout position of the laser radar host 1 through the moving device and fix it through the position fixing device.

[0047] Furthermore, the laser wind measuring radar and the bearing base are both made of lightweight materials, so that the overall weight G of the laser wind measuring radar and the bearing base is ≤60kg.

[0048] Furthermore, the control and display terminal 2 is used to adjust the measurement direction, measurement posture and measurement distance of the laser radar host 1, and display the real-time airflow field data measured by the laser radar host 1 and the test results generated by the data processor 3.

[0049] Furthermore, the data processor 3 is used to acquire and store the measurement data of the laser radar host 1, and generate test results according to a preset data processing algorithm.

[0050] Furthermore, the inertial navigation positioning unit 4 is used to obtain the ship speed and position information to define the measurement coordinate system of the laser radar host 1.

[0051] Furthermore, the real-time airflow field data includes: airflow field instantaneous wind speed data, airflow field instantaneous wind direction data and airflow field wind speed signal-to-noise ratio data.

[0052] Furthermore, the test results include horizontal wind speed data at various heights in the entire outboard measurement area of ​​the ship.

[0053] Embodiment 2: This embodiment provides a real ship airflow field test system that can perform outboard wind measurement. The lightweight laser radar host 1 is the main scanning and receiving part of the wind measurement system, and is composed of a laser radar host and a supporting base. The host adopts a lightweight design, and the base is a flat structure of lightweight materials to reduce the weight of the equipment. The weight of the equipment meets the need for 2 to 3 adults to carry it easily, for example, within 60 kilograms, so as to flexibly change the test position.

[0054] Furthermore, the control and display terminal 2 is mainly used to control the irradiation attitude, direction, distance and mode of the laser radar host, and can display the instantaneous airflow field data and morphology in real time on the display terminal.

[0055] Furthermore, the data processor 3 is used to collect and store test data and generate test results and data sets according to a set algorithm.

[0056] Furthermore, the inertial navigation positioning unit 4 is a speed and position definition unit of the system coordinate system, and when the speed and position information input of the own ship cannot be obtained, the inertial navigation positioning unit 4 provides corresponding input.

[0057] Furthermore, each device in the system is powered by a power supply 5 and a power supply cable 6 , and is connected and interacted via a communication network 7 .

[0058] Embodiment 3, based on the same inventive concept, this embodiment also provides a real ship airflow field test method for outboard wind measurement, based on the real ship airflow field test system as described above, such as Figure 2 As shown, the specific steps include:

[0059] S1, confirm that the ship enters a stable navigation state;

[0060] S2, power on and status check of each device in the test system;

[0061] S3, obtaining the ship's speed and position information through an inertial navigation positioning unit to establish an airflow field measurement coordinate system;

[0062] S4, placing the laser radar host at the initial measurement position;

[0063] S5, measuring and collecting airflow field data at the initial measurement position;

[0064] S6, sending the airflow field data at the initial measurement position to a data processor via a communication network;

[0065] S7, placing the laser radar host at the next measurement position;

[0066] S8, measuring and collecting airflow field data at the current measurement position;

[0067] S9, sending the airflow field data of the current measurement position to a data processor via a communication network;

[0068] S10, repeating steps S7 to S9 until the airflow field data measurement and collection of the entire outboard measurement area are completed;

[0069] S11, the data processing machine generates a test result according to a preset data processing algorithm.

[0070] The data processing algorithm specifically includes:

[0071] 1) Obtain the wind speed signal-to-noise ratio data of the airflow field at each measurement position in the measurement area and compare it with the preset signal-to-noise ratio threshold, set the wind speed data of the measurement position that does not meet the threshold to a null value and remove it, and do not process it in the subsequent data processing process;

[0072] 2) Obtaining instantaneous wind speed data and instantaneous wind direction data of the airflow field at each measurement position at each height within the measurement area;

[0073] 3) According to the angle between the laser emission direction of the laser radar host and the horizontal direction at the current height, and the instantaneous wind direction data, the instantaneous wind speed data is converted into the horizontal wind speed data at the current height;

[0074] 4) Output the horizontal wind speed data at each height at each measurement position within the measurement area.

[0075] Furthermore, all parts involved in this application that are not described in detail are the same as the prior art or are implemented using the prior art.

[0076] In summary:

[0077] 1. The present invention provides a real ship airflow field test system that can perform outboard wind measurement. Through the cooperation of a lightweight laser radar host, a control and display terminal, an inertial navigation positioning unit and a data processor, it can realize non-contact measurement of the outboard airflow field of the ship on the deck of the ship. The measurement process is safe and stable, and the system location is flexible and easy to use.

[0078] 2. The present invention also provides a method for testing the airflow field of a real ship for outboard wind measurement, which is easy to implement as a whole and can better adapt to the actual ship test environment, thereby improving the accuracy of the test results and greatly improving the efficiency of ship airflow field testing.

[0079] It will be easily understood by those skilled in the art that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A real ship airflow field test system capable of outboard wind measurement, characterized in that: The laser radar host (1), a control and display terminal (2), a data processing machine (3) and an inertial navigation positioning unit (4), wherein the laser radar host (1) and the inertial navigation positioning unit (4) are both arranged on the deck of a ship, and the measurement direction of the laser radar host (1) faces outboard of the ship, the arrangement position of the laser radar host (1) can be adjusted in real time, and the control and display terminal (2) and the data processing machine (3) are both installed in a control room of the ship; The laser radar host (1), the control and display terminal (2), the data processor (3) and the inertial navigation positioning unit (4) exchange information via a communication network (7), and the laser radar host (1), the control and display terminal (2), the data processor (3) and the inertial navigation positioning unit (4) are all connected to a power supply (5) via a power supply cable (6).

2. A real ship airflow field test system capable of outboard wind measurement according to claim 1, characterized in that: The laser radar host (1) comprises a laser wind measurement radar and a supporting base, wherein a moving device and a position fixing device are provided at the bottom of the supporting base, and an operator can adjust the arrangement position of the laser radar host (1) through the moving device and fix it through the position fixing device.

3. A real ship airflow field test system capable of outboard wind measurement according to claim 2, characterized in that: The laser wind measuring radar and the bearing base are both made of lightweight materials, so that the overall weight G of the laser wind measuring radar and the bearing base is less than or equal to 60kg.

4. A real ship airflow field test system capable of outboard wind measurement according to claim 1, characterized in that: The control and display terminal (2) is used to adjust the measurement direction, measurement posture and measurement distance of the laser radar host (1), and to display the real-time airflow field data measured by the laser radar host (1) and the test results generated by the data processing machine (3).

5. A real ship airflow field test system capable of outboard wind measurement according to claim 1, characterized in that: The data processing machine (3) is used to acquire and store the measurement data of the laser radar host (1), and to generate test results according to a preset data processing algorithm.

6. A real ship airflow field test system capable of outboard wind measurement according to claim 1, characterized in that: The inertial navigation positioning unit (4) is used to obtain ship speed and position information to define a measurement coordinate system of the laser radar host (1).

7. A real ship airflow field test system capable of outboard wind measurement according to claim 4, characterized in that: The real-time airflow field data includes: airflow field instantaneous wind speed data, airflow field instantaneous wind direction data and airflow field wind speed signal-to-noise ratio data.

8. A real ship airflow field test system capable of outboard wind measurement according to claim 4, characterized in that: The test results include horizontal wind speed data at various heights in the entire outboard measurement area of ​​the vessel.

9. A method for testing the airflow field of a real ship capable of outboard wind measurement, based on the real ship airflow field testing system as claimed in any one of claims 1 to 8, characterized in that: The steps include: S1, confirm that the ship enters a stable navigation state; S2, power on and status check of each device in the test system; S3, obtaining the ship's speed and position information through an inertial navigation positioning unit to establish an airflow field measurement coordinate system; S4, placing the laser radar host at the initial measurement position; S5, measuring and collecting airflow field data at the initial measurement position; S6, sending the airflow field data at the initial measurement position to a data processor via a communication network; S7, placing the laser radar host at the next measurement position; S8, measuring and collecting airflow field data at the current measurement position; S9, sending the airflow field data of the current measurement position to a data processor via a communication network; S10, repeating steps S7 to S9 until the airflow field data measurement and collection of the entire outboard measurement area are completed; S11, the data processing machine generates a test result according to a preset data processing algorithm.

10. The actual ship airflow field testing method according to claim 9 is characterized in that: The data processing algorithm specifically includes: 1) Obtain the wind speed signal-to-noise ratio data of the airflow field at each measurement position in the measurement area and compare it with the preset signal-to-noise ratio threshold, set the wind speed data of the measurement position that does not meet the threshold to a null value and remove it, and do not process it in the subsequent data processing process; 2) Obtaining instantaneous wind speed data and instantaneous wind direction data of the airflow field at each measurement position at each height within the measurement area; 3) According to the angle between the laser emission direction of the laser radar host and the horizontal direction at the current height, and the instantaneous wind direction data, the instantaneous wind speed data is converted into the horizontal wind speed data at the current height; 4) Output the horizontal wind speed data at each height at each measurement position within the measurement area.

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