KR102582273B1 - Aerosol spray apparatus for increasing availability of a wind LiDAR, and a floating wind resource observation appratus having the same - Google Patents

Abstract

The present invention relates to an aerosol injection device for improving the availability of wind lidar for measuring wind conditions at sea and a floating wind measurement device at sea including the same. The floating wind measurement device at sea of the present invention provides aerosol in the air. A drone (210) equipped with an aerosol spray device (100) for spraying; a floating body 220 on which a wind lidar 230 for measuring wind conditions is installed; A drone docking unit 240 provided on the upper part of the floating body 220 and on which the drone 210 is seated; It includes a remote control unit 250 that controls the flight of the drone 210 through wireless communication with the drone 210.

Description

Aerosol spray apparatus for increasing availability of a wind LiDAR, and a floating wind resource observation appratus having the same}

The present invention relates to an aerosol injection device for improving the availability of wind lidar for measuring wind conditions at sea and a floating wind measurement device including the same.

In general, LiDAR (Light Detection and Ranging) is a technology that observes atmospheric conditions by irradiating a laser beam into the atmosphere and receiving and interpreting backscattered signals scattered by air molecules or aerosols present in the atmosphere. Because the wavelength of the laser is shorter than that of other wind profilers, LIDAR has the advantage of being able to measure wind fields even in atmospheric conditions where there is relatively no dust. This is because the intensity of scattering of electromagnetic waves by small particles is inversely proportional to the wavelength (Rayleigh scattering).

Meanwhile, in recent years, offshore wind power has emerged as a realistic alternative in response to climate change and in the transition to a low-carbon economy. Offshore wind power complexes can secure more abundant wind than onshore wind power, and are also free from problems such as noise and damage to nature. Relatively free. It also has favorable conditions for installing large turbines and constructing large-scale complexes.

In order to develop an offshore wind farm, it is necessary to measure wind conditions over a considerable period of time (at least one year), and floating LiDAR is being used to measure wind conditions. These floating LIDARs are installed on a floating body, and the LIDAR consists of a transmission optical system that irradiates a light source such as a pulse laser and a reception optical system that receives reflected light that is reflected and returned by air molecules or aerosols in the atmosphere. .

However, these floating LIDARs for marine observation make observations in distant sea areas away from land, and unlike land, the atmosphere at sea is quite clean, so the concentration (density) of dust or aerosol in the air is quite low, which is the reason for the availability of LIDAR. There is a problem that the (data recovery rate) decreases.

Public Patent Publication No. 10-2020-0082354 (Publication date: 2020.07.08.) Public Patent Publication No. 10-2017-0087836 (Publication date: 2017.07.31.)

The present invention is intended to improve the lowering of the availability rate due to a decrease in the concentration of dust or aerosol in the air when observing a wind lidar at sea. The goal is to provide a measuring device.

A floating wind measurement device at sea according to the present invention for achieving this purpose includes a drone equipped with an aerosol spray device for spraying aerosol into the atmosphere; A floating body on which a wind lidar is installed for measuring wind conditions; A drone docking unit provided on the upper part of the floating body and on which the drone is seated; It includes a remote control unit that communicates wirelessly with the drone and controls the flight of the drone.

Preferably, the aerosol spray device consists of a plurality of devices, is fixed to a rope at predetermined intervals, and is connected to the drone.

The aerosol injection device includes a spray housing having a plurality of spray holes; an aerosol storage unit provided in the injection housing and storing aerosol; a spray nozzle unit for spraying the aerosol stored in the aerosol storage unit into the spray housing; a valve unit for regulating the flow of aerosol sprayed from the aerosol storage unit to the spray nozzle unit; a control unit provided in the injection housing to control opening and closing of the valve unit; It includes a communication unit provided in the control unit and capable of wireless communication with the remote control unit.

Next, the aerosol injection device according to the present invention includes a hollow injection housing in which a plurality of injection holes are formed; an aerosol storage unit provided in the injection housing and storing aerosol; a spray nozzle unit for spraying the aerosol stored in the aerosol storage unit into the spray housing; a valve unit for controlling the flow of aerosol sprayed from the aerosol storage unit to the spray nozzle unit; It includes a control unit provided in the injection housing to control opening and closing of the valve unit.

Preferably, the injection housing further includes a partition dividing an internal space, and the injection nozzle unit and the valve unit are respectively provided in the space partitioned by the partition.

Preferably, the injection nozzle unit is composed of a plurality of injection nozzles provided radially around the valve unit.

Preferably, the control unit further includes a communication unit capable of wireless communication for controlling the valve unit from a distance.

The floating wind measurement device at sea of the present invention includes a drone equipped with an aerosol spray device for spraying aerosol into the atmosphere, a floating body on which a wind lidar is installed for measuring wind conditions, and a floating body on which the drone is seated. Including a drone docking unit and a remote control unit that controls the flight of the drone through wireless communication with the drone, a drone equipped with an aerosol spray device is used to spray aerosol into the air in case the availability rate of the wind lidar decreases. This has the effect of increasing the availability rate of wind lidar by increasing the aerosol concentration.

In addition, the aerosol injection device of the present invention includes a hollow injection housing with a plurality of injection holes formed, an aerosol storage unit provided in the injection housing, a spray nozzle unit for spraying the aerosol stored in the aerosol storage unit into the injection housing, It includes a valve unit for controlling the flow of aerosol sprayed from the aerosol storage unit to the spray nozzle unit, and a control unit provided in the spray housing to control the opening and closing of the valve unit, so that the aerosol is naturally sprayed into the atmosphere, resulting in direct spraying of the aerosol. This has the effect of minimizing the impact on wind direction.

1 is an overall configuration diagram of an offshore floating wind measurement device according to an embodiment of the present invention;
Figure 2 is a diagram showing a drone equipped with an aerosol injection device according to an embodiment of the present invention;
Figure 3 is a cross-sectional configuration of an aerosol injection device according to an embodiment of the present invention;
Figure 4 is a plan view of the spray nozzle portion of the aerosol spray device according to an embodiment of the present invention;
Figure 5 is a diagram for illustrating and illustrating the aerosol spraying process of the offshore floating wind measurement device according to an embodiment of the present invention.

The specific structural or functional descriptions presented in the embodiments of the present invention are merely illustrative for the purpose of explaining the embodiments according to the concept of the present invention, and the embodiments according to the concept of the present invention may be implemented in various forms. In addition, it should not be construed as being limited to the embodiments described in this specification, and should be understood to include all changes, equivalents, and substitutes included in the spirit and technical scope of the present invention.

Meanwhile, in the present invention, terms such as first and/or second may be used to describe various components, but the components are not limited to the above terms. The above terms are used only for the purpose of distinguishing one component from other components, for example, within the scope of the rights according to the concept of the present invention, the first component may be named the second component, Similarly, the second component may also be referred to as the first component.

When a component is said to be “connected” or “connected” to another component, it should be understood that it may be directly connected or connected to the other component, but that other components may exist in between. something to do. On the other hand, when it is mentioned that a component is “directly connected” or “in direct contact” with another component, it should be understood that there are no other components in between. Other expressions to describe the relationship between components, such as “between” and “immediately between” or “adjacent to” and “directly adjacent to”, should be interpreted similarly.

The terms used in this specification are merely used to describe specific embodiments and are not intended to limit the invention. Singular expressions include plural expressions unless the context clearly dictates otherwise. In this specification, terms such as "comprise" or "have" are intended to designate the presence of implemented features, numbers, steps, operations, components, parts, or combinations thereof, but are intended to indicate the presence of one or more other features or numbers, It should be understood that this does not exclude in advance the possibility of the presence or addition of steps, operations, components, parts, or combinations thereof.

As explained in the prior art, wind measurement devices using floating lidar for marine observation make observations in distant sea areas away from land, and the atmosphere at sea is quite clean, unlike land, so the concentration (density) of dust or aerosol is low. It is quite low, and there is a problem in that the usability rate (data recovery rate) of the LIDAR is low because there is little reflected light that is reflected and returned by dust or aerosol.

Accordingly, the present invention seeks to improve the LiDAR availability rate by spraying aerosol into the atmosphere at sea when a situation occurs in which the availability rate decreases in the process of measuring wind conditions through LiDAR. In addition, in the process of randomly spraying aerosols into the atmosphere, direct spraying of aerosols into the atmosphere may affect wind conditions. Therefore, the aim is to minimize the impact on wind conditions by naturally spraying aerosols into the atmosphere. In the following, the attached Specific embodiments of the present invention will be described with reference to the drawings.

Figure 1 is an overall configuration diagram of an offshore floating wind measurement device according to an embodiment of the present invention, and Figure 2 is a diagram showing a drone equipped with an aerosol injection device according to an embodiment of the present invention.

Referring to Figures 1 and 2, the offshore floating wind measurement device according to this embodiment includes a drone 210 equipped with an aerosol injection device 100 and a floating body 220 on which a wind lidar 230 is installed. , It includes a drone docking unit 240 provided on the upper part of the floating body 220 on which the drone 210 is seated, and a remote control unit 250 that communicates wirelessly with the drone 210.

The floating body 220 provides buoyancy for the offshore structure and can be fixed at a certain position on the sea surface by a mooring line 221 fixed to the sea floor. The mooring line 151 may be connected to an anchor 222 installed on the sea floor, and the anchor 222 has sufficient weight to prevent the floating body 220 from shaking due to wave energy applied to the floating body 220. desirable.

The drone docking unit 240 is provided flat on the upper part of the floating body 220 to enable takeoff and landing of the drone 210, and provides a wireless charging means for wireless charging of the drone 210 when the drone 240 is seated. It can be provided.

The remote control unit 250 is for controlling the flight of the drone 210. The remote control unit 250 monitors the measurement status of the wind lidar 230 and, when it is confirmed that the data availability rate (data recovery rate) is low, the drone 210 ) can be operated to spray aerosol into the atmosphere through the aerosol injection device 100 to increase the concentration of aerosol in the atmosphere, thereby increasing the availability rate of LiDAR.

Meanwhile, the remote control unit 250 may be capable of communicating with a management server (not shown) provided on land, and the flight of the drone 210 can be controlled from the management server on land through the remote control unit 250. The floating body 220 may be equipped with a separate CCTV to operate or manage the drone 210 to assist in the maintenance of the drone.

Although FIG. 1 illustrates that one drone 210 is located on the upper part of the floating body 220, there may be a plurality of drones 210 in the drone docking unit 240.

Figure 2 is a diagram showing a drone equipped with an aerosol injection device according to an embodiment of the present invention.

As illustrated in FIG. 2, in this embodiment, the aerosol injection device 100 is fixed to the rope 101 at predetermined intervals and connected to the drone 210, which is an unmanned aircraft. The drone 210 is provided by a known unmanned aircraft capable of autonomous flight according to an external radio signal or a pre-programmed path. In this embodiment, the drone 210 is connected to the remote control unit 250 of the floating body 220. It is controlled and operated by

In order to spray aerosol over the entire measurement range of the wind lidar when the availability of the wind lidar decreases, the aerosol spray device 100 is fixed at regular intervals via a rope 101 at the bottom of the drone 210 to spray a wide range. Aerosols are simultaneously sprayed into the atmosphere.

Preferably, the weight 102 is fixed to the lowest end of the rope 101, and the weight 102 minimizes the shaking of the aerosol spray device 100 and the influence of wind during the flight of the drone 210. .

Figure 3 is a cross-sectional configuration diagram of an aerosol injection device according to an embodiment of the present invention.

Referring to FIG. 3, the aerosol injection device 100 of this embodiment includes a spray housing 110 in which a spray hole 111 is formed, an aerosol storage unit 120 provided in the spray housing 110, and an aerosol storage unit. Spray nozzle units 130 and 140 for spraying the aerosol stored in (120) into the spray housing 110, and a device for controlling the flow of aerosol sprayed from the aerosol storage unit 120 to the spray nozzle unit 130. It includes valve units 150 and 160 and a control unit 170 provided in the injection housing 110 to control the opening and closing of the valve units 150 and 160.

The spray housing 110 has a hollow cylindrical shape, and a plurality of spray holes 111 are formed along the side surface, so that aerosol is sprayed through the spray holes 111.

The aerosol storage unit 120 is provided inside the injection housing 110 to store the aerosol. Preferably, the aerosol storage unit 120 is provided with a partition ( 112), and a first injection nozzle unit 130 and a second injection nozzle unit 140 are provided at the top and bottom of the aerosol storage unit 120, respectively.

The first injection nozzle unit 130 and the second injection nozzle unit 140 are each equipped with a first valve unit 150 and a second valve unit 160, so that the aerosol stored in the aerosol storage unit 120 is stored in the first valve. Aerosol is sprayed by opening and closing the unit 150 and the second valve unit 160.

The first and second valve units 150 and 160 may be provided by electronic valves that are opened and closed by electrical control signals, and are equipped with a pump 121 to generate aerosol discharge pressure in the aerosol storage unit. And in conjunction with this pump 121, opening and closing is performed by an external electrical control signal.

In particular, Figure 4 is a plan view of the spray nozzle portion of the aerosol spray device according to an embodiment of the present invention, wherein the first spray nozzle portion includes a plurality of spray nozzles 131 (131) provided radially around the first valve unit 150. It may be composed of 132) (133) (134), and the aerosol sprayed in all directions by the multiple spray nozzles (131) (132) (133) (134) is evenly distributed within the spray housing (110) and naturally flows into the spray hole. It is exhausted to the outside through (111).

The control unit 170 controls the operation of the pump 121 together with the first and second valve units 150 and 160, and can automatically spray aerosol at certain injection cycles, including a timer.

Preferably, the control unit 170 further includes a communication unit 180 for communication with the outside, and this communication unit 180 communicates with the remote control unit 250 of the floating body 220 to operate the remote control unit 250. By controlling the opening and closing of each valve unit 150 and 160, the half cycle or start and end of the aerosol can be controlled.

Figure 5 is a diagram for illustrating and illustrating the aerosol spraying process of the floating wind measurement device on the sea according to an embodiment of the present invention.

Referring to FIG. 5, the measurement range (L1) of the wind lidar 240 used to measure wind conditions to investigate wind condition data for the development of an offshore wind power complex is approximately 40 m to 200 m, and the blade height of the offshore wind power tower is The height (L2) that is mainly measured is approximately 60m to 160m. Therefore, if the availability rate (data recovery rate) is low during the wind condition measurement process in the wind lidar 230, it is necessary to increase the concentration of aerosol for the measurement target height (L2).

In this embodiment, two drones (210A) (210B) equipped with a plurality of aerosol injection devices (100) can be used, and each drone (210A) (210B) is equipped with a rope of appropriate length (L3) (L4). A plurality of aerosol injection devices 100 are provided and arranged vertically in the vertical direction to spray aerosol to increase the concentration of aerosol at the measurement target height (L2), thereby increasing the availability rate of the wind lidar 230. Meanwhile, the remote control unit 250 of the floating body 220 continues to monitor the measurement situation of the wind lidar 240, and when the availability rate of the wind lidar 240 is recovered, the spraying of the aerosol is stopped and the drone 210A Return (210B) back to the drone docking unit (240).

Meanwhile, Figure 2 illustrates that aerosol spraying is performed at the height of the measurement target using two drones 210A and 210B. However, depending on the height of the measurement target, the measurement target height is divided into two or more sections and aerosol is sprayed into the corresponding section. Two or more drones may be used to make this happen.

The present invention described above is not limited to the above-described embodiments and the accompanying drawings, and various substitutions, modifications, and changes are possible without departing from the technical spirit of the present invention as is known in the technical field to which the present invention pertains. It will be clear to those who have the knowledge of.

100: Aerosol spray device 110: Spray housing
120: Aerosol storage unit 130, 140: Spray nozzle unit
150, 160: valve unit 170: control unit
180: Communication Department 210: Drone
220: floating body 230: wind lidar
240: drone docking unit 250: remote control unit

Claims (7)

A drone equipped with an aerosol spray device for spraying aerosol into the atmosphere;
A floating body on which a wind lidar is installed for measuring wind conditions;
A drone docking unit provided on the upper part of the floating body and on which the drone is seated;
It includes a remote control unit that controls the flight of the drone through wireless communication with the drone,
The aerosol injection device,
a spray housing having a closed internal space and a plurality of spray holes formed therethrough;
an aerosol storage unit provided in the injection housing and storing aerosol;
a spray nozzle unit for spraying the aerosol stored in the aerosol storage unit into the spray housing;
a valve unit for controlling the flow of aerosol sprayed from the aerosol storage unit to the spray nozzle unit;
a control unit provided in the injection housing to control opening and closing of the valve unit;
A floating wind measurement device at sea, including a communication unit provided in the control unit and capable of wireless communication with the remote control unit. The floating wind measurement device according to claim 1, wherein the aerosol injection device is comprised of a plurality of devices, fixed to a rope at predetermined intervals, and connected to the drone. delete An aerosol spray device connected to a drone to spray aerosol at sea,
a spray housing having a closed internal space and a plurality of spray holes formed therethrough;
an aerosol storage unit provided in the injection housing and storing aerosol;
a spray nozzle unit for spraying the aerosol stored in the aerosol storage unit into the spray housing;
a valve unit for controlling the flow of aerosol sprayed from the aerosol storage unit to the spray nozzle unit;
An aerosol injection device including a control unit provided in the injection housing to control opening and closing of the valve unit. The method of claim 4, wherein the injection housing further includes a partition dividing the internal space,
An aerosol injection device, characterized in that the injection nozzle unit and the valve unit are each provided in a space partitioned by the partition. The aerosol injection device according to claim 4, wherein the injection nozzle unit is composed of a plurality of injection nozzles arranged radially around the valve unit. The aerosol injection device of claim 4, wherein the control unit further includes a communication unit capable of wireless communication for controlling the valve unit from a distance.

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