A shipboard airflow field test system and method capable of measuring wind outside the ship

Abstract

The present application relates to the technical field of ship air flow field design and evaluation, in particular to a real ship air flow field test system and method capable of measuring wind outside the hull. The present application provides a real ship air flow field test system capable of measuring wind outside the hull, which is capable of non-contact measurement of the air flow field outside the hull on the deck of the ship through cooperation of a lightweight laser radar main machine, a control and display terminal, an inertial navigation positioning unit and a data processing machine, the measurement process is safe and stable, the system position is arranged flexibly, and the system is convenient to use. The present application provides a real ship air flow field test method capable of measuring wind outside the hull, which is easy to implement as a whole, can better adapt to the real ship test environment, thereby improving the accuracy of the test results, and can greatly improve the efficiency of the ship air flow field test.

Description

Technical Field

[0001] This invention relates to the field of ship airflow field design and evaluation technology, specifically to a real ship airflow field testing system and method for conducting outboard wind measurement. Background Technology

[0002] Early shipboard airflow field tests mainly focused on the airflow field morphology on the flight deck. As application requirements have changed, existing airflow field testing technologies have increasingly focused on the flight deck itself. However, the measurement equipment for the deck cannot provide stable measurements outside the ship.

[0003] Existing flight deck airflow field measurement equipment, both domestically and internationally, mostly employs a pole-mounted design, fixed at the measurement point and connected to power and network. When using this type of equipment for outboard measurements, a specialized vehicle is required to carry it around the ship and perform stable displacement to collect data point by point. Previous attempts have explored helicopters, parachutes, and balloons, but all have proven difficult to maintain stability and safety. Existing wind profiler radars possess some basic ability to scan cloud layers, but limited by wavelength and signal characteristics, these radars suffer from low resolution and a fixed scanning direction, hindering their application and development in the field of airflow field testing.

[0004] While lidar measurement technology has matured, there is a lack of testing methods and procedures suitable for shipboard environments. In recent years, lidar wind measurement technology has emerged, enabling "non-contact" measurement of outboard airflow fields. The scanning range and data accuracy of this technology have gradually improved, and it now largely meets the requirements for airflow field testing. However, because existing airflow field testing methods do not consider the outboard portion of the ship, there is still no lidar method or solution adapted to the actual shipboard environment for measuring airflow fields. 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 measurement of ship outboard airflow field and can be better adapted to the real ship testing environment, thereby greatly improving the efficiency of ship airflow field testing.

[0006] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is as follows:

[0007] I. A shipboard airflow field testing system capable of conducting outboard wind measurements

[0008] This invention provides a shipboard airflow field testing system for outboard wind measurement, comprising a lidar host 1, a control and display terminal 2, a data processor 3, and an inertial navigation positioning unit 4. The lidar host 1 and the inertial navigation positioning unit 4 are both arranged on the ship's deck, and the arrangement position of the lidar host 1 can be adjusted in real time. The control and display terminal 2 and the data processor 3 are both installed in the ship's control room.

[0009] The lidar host 1, control and display terminal 2, data processor 3 and inertial navigation positioning unit 4 interact with each other through communication network 7, and the lidar host 1, control and display terminal 2, data processor 3 and inertial navigation positioning unit 4 are all connected to power supply 5 through power supply cable 6.

[0010] Furthermore, the lidar host 1 includes a lidar wind measuring radar and a support base. The bottom of the support base is provided with a moving device and a position fixing device. The operator can adjust the arrangement position of the lidar host 1 through the moving device and fix it through the position fixing device.

[0011] Furthermore, both the laser wind measuring radar and the support base are made of lightweight materials, so that the overall weight of the laser wind measuring radar and the support 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 lidar host 1, and to display the real-time airflow field data measured by the lidar 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 lidar host 1, and generate test results according to a preset data processing algorithm.

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

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

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

[0017] II. A method for testing airflow field on a real ship capable of conducting outboard wind measurement.

[0018] Based on the same inventive concept, this invention also provides 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 described above, the method specifically includes the following steps:

[0019] S1, confirming that the ship has entered a stable navigation state;

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

[0021] S3, obtains ship speed and position information through inertial navigation positioning unit to establish airflow field measurement coordinate system;

[0022] S4, Position the lidar unit at the initial measurement location;

[0023] S5, measure and collect airflow field data at the initial measurement location;

[0024] S6, The airflow field data at the initial measurement location is sent to the data processor via the communication network;

[0025] S7, Position the lidar unit at the next measurement location;

[0026] S8, to measure and collect airflow field data at the current measurement location;

[0027] S9, the airflow field data at the current measurement location is sent to the data processor via the communication network;

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

[0029] S11, the data processor generates test results according to the preset data processing algorithm.

[0030] The data processing algorithm specifically includes:

[0031] 1) Obtain the airflow field wind speed signal-to-noise ratio data for each measurement location within the measurement area and compare it with the preset signal-to-noise ratio threshold. Set the wind speed data of the measurement locations that do not meet the threshold to null values ​​and discard them. Do not process them in the subsequent data processing.

[0032] 2) Obtain instantaneous wind speed and instantaneous wind direction data at each height and location within the measurement area;

[0033] 3) Based on the angle between the laser emission direction of the lidar host at the current altitude and the horizontal direction, and the instantaneous wind direction data, convert the instantaneous wind speed data into horizontal wind speed data at the current altitude;

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

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

[0036] 1. This invention provides a real ship airflow field testing system for outboard wind measurement. By combining a lightweight lidar host, a control and display terminal, an inertial navigation positioning unit and a data processor, it can realize non-contact measurement of the ship's outboard airflow field on the ship's deck. The measurement process is safe and stable, and the system is flexible in its location and easy to use.

[0037] 2. The present invention also provides a method for testing the airflow field of a real ship that can be used for outboard wind measurement. The method is easy to implement, can be better adapted to the real ship testing environment, thereby improving the accuracy of the test results and significantly improving the efficiency of ship airflow field testing. Attached Figure Description

[0038] Figure 1 This is a schematic diagram of a ship-based airflow field testing system capable of performing outboard wind measurement, as described in an embodiment of the present invention.

[0039] Figure 2 This is a flowchart of a method for testing the airflow field on a real ship capable of measuring wind from outside the ship, as described in an embodiment of the present invention.

[0040] In the diagram: 1-LiDAR main unit; 2-Control and display terminal; 3-Data processor; 4-Inertial navigation positioning unit; 5-Power supply; 6-Power supply cable; 7-Communication network. Detailed Implementation

[0041] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention. Furthermore, the technical features involved in the various embodiments of this invention described below can be combined with each other as long as they do not conflict with each other.

[0042] It should be noted that, depending on the implementation needs, the various steps / components described in this application can be broken down into more steps / components, or two or more steps / components or parts of the operation of steps / components can be combined into new steps / components to achieve the purpose of this invention.

[0043] Example 1: This example provides a real-ship airflow field testing system capable of performing outboard wind measurement, such as... Figure 1 As shown, it mainly includes: a lightweight lidar host 1, a control and display terminal 2, a data processor 3, an inertial navigation positioning unit 4, a power supply 5, power supply cables 6, and a communication network 7.

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

[0045] The lidar host 1, control and display terminal 2, data processor 3 and inertial navigation positioning unit 4 interact with each other through communication network 7, and the lidar host 1, control and display terminal 2, data processor 3 and inertial navigation positioning unit 4 are all connected to power supply 5 through power supply cable 6.

[0046] Furthermore, the lidar host 1 includes a lidar wind measuring radar and a support base. The bottom of the support base is provided with a moving device and a position fixing device. The operator can adjust the arrangement position of the lidar host 1 through the moving device and fix it through the position fixing device.

[0047] Furthermore, both the laser wind measuring radar and the support base are made of lightweight materials, so that the overall weight of the laser wind measuring radar and the support 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 lidar host 1, and to display the real-time airflow field data measured by the lidar 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 lidar host 1, and generate test results according to a preset data processing algorithm.

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

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

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

[0053] Example 2: This example provides a shipboard airflow field testing system for outboard wind measurement. The lightweight lidar host 1 is the main scanning and receiving part of the wind measurement system. It consists of a lidar host and a support base. The host adopts a lightweight design, and the base is a planar structure made of lightweight materials to reduce the weight of the equipment. The weight of the equipment meets the requirement that it can be easily carried by 2 to 3 adults, for example, within 60 kg, so as to flexibly change the test position.

[0054] Furthermore, the control and display terminal 2 is mainly used to control the illumination posture, orientation, distance and mode of the lidar host, and can display instantaneous airflow field data and morphology on the display terminal in real time.

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

[0056] Furthermore, the inertial navigation positioning unit 4 is the velocity and position definition unit of the coordinate system of this system. When the velocity and position information of the ship cannot be obtained, the inertial navigation positioning unit 4 provides the corresponding input.

[0057] Furthermore, all devices within the system are powered by power source 5 and power cables 6, and are connected and interact via communication network 7.

[0058] Example 3, based on the same inventive concept, also provides a method for testing the airflow field on a real ship capable of outboard wind measurement, based on the real ship airflow field testing system described above, such as... Figure 2 As shown, the specific steps include the following:

[0059] S1, confirming that the ship has entered a stable navigation state;

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

[0061] S3, obtains ship speed and position information through inertial navigation positioning unit to establish airflow field measurement coordinate system;

[0062] S4, Position the lidar unit at the initial measurement location;

[0063] S5, measure and collect airflow field data at the initial measurement location;

[0064] S6, The airflow field data at the initial measurement location is sent to the data processor via the communication network;

[0065] S7, Position the lidar unit at the next measurement location;

[0066] S8, to measure and collect airflow field data at the current measurement location;

[0067] S9, the airflow field data at the current measurement location is sent to the data processor via the communication network;

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

[0069] S11, the data processor generates test results according to the preset data processing algorithm.

[0070] The data processing algorithm specifically includes:

[0071] 1) Obtain the airflow field wind speed signal-to-noise ratio data for each measurement location within the measurement area and compare it with the preset signal-to-noise ratio threshold. Set the wind speed data of the measurement locations that do not meet the threshold to null values ​​and discard them. Do not process them in the subsequent data processing.

[0072] 2) Obtain instantaneous wind speed and instantaneous wind direction data at each height and location within the measurement area;

[0073] 3) Based on the angle between the laser emission direction of the lidar host at the current altitude and the horizontal direction, and the instantaneous wind direction data, convert the instantaneous wind speed data into horizontal wind speed data at the current altitude;

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

[0075] Furthermore, all parts of this application that are not described in detail are the same as or implemented using existing technology.

[0076] In summary:

[0077] 1. This invention provides a real ship airflow field testing system for outboard wind measurement. By combining a lightweight lidar host, a control and display terminal, an inertial navigation positioning unit and a data processor, it can realize non-contact measurement of the ship's outboard airflow field on the ship's deck. The measurement process is safe and stable, and the system is flexible in its location and easy to use.

[0078] 2. The present invention also provides a method for testing the airflow field of a real ship that can be used for outboard wind measurement. The method is easy to implement, can be better adapted to the real ship testing environment, thereby improving the accuracy of the test results and significantly improving the efficiency of ship airflow field testing.

[0079] Those skilled in the art will readily understand that the above description is merely 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 within the scope of protection of the present invention.

Claims

1. A method for testing the airflow field on a real ship capable of outboard wind measurement, based on a real ship airflow field testing system, characterized in that, The actual ship airflow field testing system includes a lidar host (1), a control and display terminal (2), a data processor (3), and an inertial navigation positioning unit (4). The lidar host (1) and the inertial navigation positioning unit (4) are both arranged on the ship deck, and the measurement direction of the lidar host (1) faces outwards from the ship. The arrangement position of the lidar host (1) can be adjusted in real time. The control and display terminal (2) and the data processor (3) are both installed in the ship control room. The laser radar host (1), control and display terminal (2), data processor (3) and inertial navigation positioning unit (4) interact with each other 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 the power supply (5) through power supply cable (6); The method for testing the airflow field on a real ship includes the following steps: S1, confirming that the ship has entered a stable navigation state; S2, Test the power-on status and condition of each device in the test system; S3, obtains ship speed and position information through inertial navigation positioning unit to establish airflow field measurement coordinate system; S4, Position the lidar unit at the initial measurement location; S5, measure and collect airflow field data at the initial measurement location; S6, The airflow field data at the initial measurement location is sent to the data processor via the communication network; S7, Position the lidar unit at the next measurement location; S8, to measure and collect airflow field data at the current measurement location; S9, the airflow field data at the current measurement location is sent to the data processor via the communication network; S10, repeat steps S7 to S9 until the airflow field data measurement and acquisition of the entire outboard measurement area are completed; S11, the data processor generates test results according to the preset data processing algorithm.

2. The method for testing the airflow field on a real ship capable of outboard wind measurement according to claim 1, characterized in that: The lidar host (1) includes a lidar wind measuring radar and a support base. The bottom of the support base is provided with a moving device and a position fixing device. The operator can adjust the arrangement position of the lidar host (1) through the moving device and fix it through the position fixing device.

3. The method for testing the airflow field on a real ship capable of outboard wind measurement according to claim 2, characterized in that: Both the laser wind measuring radar and the support base are made of lightweight materials, so that the overall weight of the laser wind measuring radar and the support base is ≤60kg.

4. The method for testing the airflow field on a real ship 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 attitude and measurement distance of the lidar host (1), and to display the real-time airflow field data measured by the lidar host (1) and the test results generated by the data processor (3).

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

6. The method for testing the airflow field on a real ship capable of outboard wind measurement according to claim 1, characterized in that: The inertial navigation positioning unit (4) is used to acquire ship speed and position information to define the measurement coordinate system of the lidar host (1).

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

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

9. A method for testing the airflow field on a real ship capable of outboard wind measurement according to claim 1, characterized in that, The data processing algorithm specifically includes: 1) Obtain the airflow field wind speed signal-to-noise ratio data for each measurement location within the measurement area and compare it with the preset signal-to-noise ratio threshold. Set the wind speed data of the measurement locations that do not meet the threshold to null values ​​and discard them. Do not process them in the subsequent data processing. 2) Obtain instantaneous wind speed and instantaneous wind direction data at each height and location within the measurement area; 3) Based on the angle between the laser emission direction of the lidar host at the current altitude and the horizontal direction, and the instantaneous wind direction data, convert the instantaneous wind speed data into horizontal wind speed data at the current altitude; 4) Output the horizontal wind speed data at each height at each measurement location within the measurement area.

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