Ice detection device for wind turbine blades

Abstract

This application discloses an icing detection device for wind turbine blades, which relates to the technical field of icing measurement. The device includes a microwave detection board, a high-frequency circuit board, a microcontroller, and a temperature detection module. The high-frequency circuit board transmits a high-frequency microwave signal to the microwave detection board. The microwave detection board generates an external microwave electromagnetic field in the process of transmitting the high-frequency microwave signal. When the surface of the microwave detection board comes into contact with an object with a different dielectric constant on the wind turbine blade, the time-domain characteristics of the microwave electromagnetic field will change. At the same time, the time-domain characteristics of the high-frequency microwave signal will also change in the process of returning. The high-frequency circuit board performs sampling processing on the returned high-frequency microwave signal to obtain microwave parameters. The microcontroller obtains icing information based on the microwave parameters and the temperature detection value detected by the temperature detection module.

Description

[Technical Field]

[0001] This application claims priority to a Chinese patent application filed with the China Patent Office on October 8, 2023, bearing application number 202311297721.9 and entitled "Icing detection device for blades of wind turbine generator," the entire contents of which are incorporated herein by reference.

[0002] The present application relates to the technical field of ice measurement, and in particular to ice detection devices for wind turbine blades. [Background technology]

[0003] Wind power, a clean energy source, is accounting for an increasing proportion of total power generation, but wind turbines installed in mountainous areas or on the sea face a serious threat of icing in winter. Icing on wind turbine blades not only reduces power generation efficiency due to load changes, but in severe cases can even damage the equipment. If wind turbines installed in residential areas, roads, railways, etc. continue to operate after freezing, the accumulated ice will fall off, causing damage to the equipment and causing fatalities.

[0004] To effectively prevent the impact of icing on wind power generation equipment and minimize its impact on power generation efficiency, it is necessary to timely and accurately determine the icing status of wind turbine blades through icing sensors. Because wind turbine blades rotate at high speed and have a streamlined design, blade icing sensors must have a flexible, ultra-thin, attachable structure that is self-powered and wirelessly connected.

[0005] Existing wind power blade icing detection methods mainly rely on video monitoring and local weather forecasting, which cannot directly detect the icing status of the blades and therefore do not meet the sensitivity and accuracy requirements.Currently, capacitive sensors are attached to wind power blades, but the accuracy of capacitance-based icing measurement is insufficient and the effects of ice-water mixtures cannot be resolved.In addition, the direct attachment method is unreliable and prone to falling off over time.

[0006] Various ice sensors for ground use have problems such as large volume, heavy weight, and high power consumption, making them unsuitable for use on wind turbine blades that rotate at high speeds. Summary of the Invention [Problem to be solved by the invention]

[0007] Based on this, the objective of this application is to provide an ice detection device for wind turbine blades, which calculates ice information from microwave parameters and temperature detection values ​​by a microcontroller, and solves the problem that ice-water mixture affects the accuracy of ice detection on wind turbine blades. [Means for solving the problem]

[0008] In order to achieve the above object, the present application provides an ice detection device for wind power generator blades, specifically including a microwave detection board, a high-frequency circuit board, a microcontroller and a temperature detection module; the microwave output terminal of the high frequency circuit board is connected to the microwave input terminal of the microwave detection board, the microwave input terminal of the high frequency circuit board is connected to the microwave output terminal of the microwave detection board, the microcontroller is connected to the high frequency circuit board, the temperature detection module is connected to the microcontroller, the high frequency circuit board transmits a high frequency microwave signal to the microwave detection board, the microwave detection board generates an external microwave electromagnetic field in the process of transmitting the high frequency microwave signal, when the surface of the microwave detection board comes into contact with an attachment with a different dielectric constant on the blade of a wind power generator, the time domain characteristics of the microwave electromagnetic field will change, and at the same time, the time domain characteristics of the high frequency microwave signal will also change in the process of returning, the high frequency circuit board performs sampling processing on the returned high frequency microwave signal to obtain microwave parameters, the microcontroller obtains icing information according to the microwave parameters and the temperature detection value detected by the temperature detection module, The microwave parameters specifically include microwave phase and microwave wavelength, and the icing information specifically includes icing condition and icing thickness.

[0009] Optionally, obtaining icing information based on microwave parameters and temperature detection values ​​specifically includes: Identifying icing conditions; and If the microwave wavelength of the returned high frequency microwave signal is greater than the first wavelength preset value × 0.95, the icing state information output is a dry state; If the temperature detection value is greater than 5°C and the microwave wavelength of the returned high frequency microwave signal is less than the second wavelength setting value, the output icing state information is a water accumulation state; When the temperature detection value is less than 5°C, the microwave wavelength of the returned high-frequency microwave signal is greater than the second wavelength setting value and less than the first wavelength preset value × 0.95, and the fluctuation range of the microwave wavelength of the returned high-frequency microwave signal within 10 seconds is greater than the first wavelength preset value × 0.1, the output icing state information is a water accumulation state; When the temperature detection value is less than 5°C, the microwave wavelength of the returned high-frequency microwave signal is greater than the second wavelength setting value and less than the first wavelength preset value × 0.95, the fluctuation range of the microwave wavelength of the returned high-frequency microwave signal within 10 seconds is less than the first wavelength preset value × 0.1, and the first wavelength preset value is continuously decreasing, the icing state information output is an ice accumulation state; When the temperature detection value is less than 5°C, the microwave wavelength of the returned high-frequency microwave signal is greater than the second wavelength setting value and less than the first wavelength preset value × 0.95, the fluctuation range of the microwave wavelength of the returned high-frequency microwave signal within 10 seconds is less than the first wavelength preset value × 0.1, and the first wavelength preset value continuously decreases, and then the fluctuation range of the first wavelength preset value within 10 seconds is greater than the first wavelength preset value × 0.1 again, the output icing state information is ice melting state; Identifying ice thickness; obtaining a compensated phase value based on the microwave phase of the returned high frequency microwave signal; obtaining a compensated phase area deviation diagonal matrix based on the compensated phase values; calculating a coefficient vector based on the compensated phase regional deviation diagonal matrix and the laboratory measured regional empirical linear equation; and calculating ice thickness based on the coefficient vector.

[0010] Optionally, said ice detection device for a blade of a wind turbine generator further comprises an elastomer and a fiberglass cloth; the microwave detection board, the high-frequency circuit board, the microcontroller, and the temperature detection module are all sealed in the elastomer; The elastomer is fused and fixed to the glass fiber cloth via polyurethane.

[0011] Optionally, said ice detection device for blades of a wind turbine generator further comprises a solar panel, a lithium battery and a power management module; The solar panel, the lithium battery, and the power management module are all sealed in the elastomer, and the surfaces of the microwave detection board and the solar panel are all in contact with air. The power management module is connected to the solar panel, the lithium battery, the high-frequency circuit board, and the microcontroller, respectively, and is used to adjust the charging voltage of the solar panel and the discharging voltage of the lithium battery to supply power to the high-frequency circuit board and the microcontroller.

[0012] Optionally, said ice detection device for blades of a wind turbine generator further comprises a wireless communication module; The wireless communication module is sealed within the elastomer, the wireless communication module is connected to the microcontroller, and the wireless communication module is used to wirelessly transmit icing information to a Master station.

[0013] Optionally, there are two of each of the microwave detection board, the high frequency circuit board, the solar panel and the lithium battery in the ice detection device for blades of a wind turbine generator.

[0014] Optionally, a first region of the lower surface of the fiberglass cloth is fixed to the surface of the wind turbine blade by an adhesive, and a second region of the lower surface of the fiberglass cloth is fixed to the surface of the wind turbine blade by a hardener.

[0015] Optionally, the first region is a contact surface where the elastomer and the glass fiber cloth are fused and fixed, and the second region is all areas of the glass fiber cloth excluding the first region. [Effects of the Invention]

[0016] According to the specific embodiments provided in this application, the application discloses the following technical effects: In this application, a high-frequency microwave signal is transmitted to a microwave detection board via a high-frequency circuit board, and the microwave detection board generates an external microwave electromagnetic field in the process of transmitting the high-frequency microwave signal. When the surface of the microwave detection board comes into contact with an object with a different dielectric constant on the blade of a wind turbine, the time-domain characteristics of the microwave electromagnetic field will change, and at the same time, the time-domain characteristics of the high-frequency microwave signal will also change in the process of returning. The high-frequency circuit board performs sampling processing on the returned high-frequency microwave signal to obtain microwave parameters, and the microcontroller obtains icing information according to the microwave parameters and the temperature detection value detected by the temperature detection module, thereby solving the problem that ice-water mixtures affect the accuracy of icing detection on wind turbine blades. [Brief explanation of the drawings]

[0017] In order to more clearly describe the embodiments of the present application or the technical solutions of the prior art, the drawings that need to be used in the embodiments are briefly described below. Obviously, the drawings described below are only some embodiments of the present application, and those skilled in the art can obtain other drawings based on these drawings without any creative efforts.

[0018] [Figure 1] 1 is a first structural connection diagram of an ice detection device for blades of a wind power generator provided by an embodiment of the present application; FIG. [Figure 2] FIG. 2 is a second structural connection diagram of an ice detection device for blades of a wind power generator provided by an embodiment of the present application. [Figure 3] 1 is a component diagram of an ice detection device for a blade of a wind turbine generator provided by an embodiment of the present application. [Figure 4] 1 is a plan view of an ice detection device for a blade of a wind turbine generator provided by an embodiment of the present application; [Figure 5] 1 is a front view of an ice detection device for a blade of a wind turbine generator provided by an embodiment of the present application; DETAILED DESCRIPTION OF THE INVENTION

[0019] Hereinafter, the technical solutions in the embodiments of the present application will be clearly and completely described with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only some of the embodiments of the present application, and not all of the embodiments, and all other embodiments that can be obtained by those skilled in the art without any creative efforts based on the embodiments of the present application all belong to the technical scope of the present application.

[0020] The purpose of this application is to provide an ice detection device for wind turbine blades, which calculates ice information from microwave parameters and temperature detection values ​​using a microcontroller, and solves the problem that ice-water mixture affects the accuracy of ice detection on wind turbine blades.

[0021] To make the above objects, features and advantages of the present application more apparent and understandable, the present application will be described in more detail below with reference to the drawings and specific embodiments.

[0022] As shown in FIGS. 1 to 3 , the present application provides an ice detection device for wind turbine blades, and the device specifically includes a microwave detection board, a high-frequency circuit board, a microcontroller 9, and a temperature detection module 10.

[0023] The microwave output terminal of the high-frequency circuit board is connected to the microwave input terminal of the microwave detection board, the microwave input terminal of the high-frequency circuit board is connected to the microwave output terminal of the microwave detection board, the microcontroller 9 is connected to the high-frequency circuit board, the temperature detection module 10 is connected to the microcontroller 9, the high-frequency circuit board transmits a high-frequency microwave signal to the microwave detection board, the microwave detection board generates an external microwave electromagnetic field in the process of transmitting the high-frequency microwave signal, when the surface of the microwave detection board comes into contact with an attachment with a different dielectric constant on the blade of the wind turbine generator, the time domain characteristics of the microwave electromagnetic field will change, and at the same time, the time domain characteristics of the high-frequency microwave signal will also change in the process of returning, and the high-frequency circuit board will The high-frequency microwave signal is sampled to obtain microwave parameters, and the microcontroller 9 obtains icing information based on the microwave parameters and the temperature detection value detected by the temperature detection module 10. The high-frequency circuit board specifically includes a microwave signal generating module and a microwave signal processing module. The microwave signal generating module is used to generate a high-frequency microwave signal with a fixed frequency and fixed power. The microwave signal processing module is used to sample the returned high-frequency microwave signal to obtain microwave parameters, and transmit the microwave parameters to the microcontroller 9 via a low-frequency voltage signal.

[0024] The microwave parameters specifically include microwave phase and microwave wavelength, and the icing information specifically includes icing condition and icing thickness.

[0025] As shown in FIGS. 4 and 5, in an alternative embodiment, the ice detection device for wind turbine blades further includes an elastomer 14 and a glass fiber cloth 13.

[0026] The microwave detection board, the high frequency circuit board, the microcontroller 9 and the temperature detection module 10 are all sealed in an elastomer 14, and the elastomer 14 is fused and fixed to the glass fiber cloth 13 via polyurethane.

[0027] A first region on the lower surface of the glass fiber cloth 13 is fixed to the surface of the wind turbine blade with an adhesive, and a second region on the lower surface of the glass fiber cloth 13 is fixed to the surface of the wind turbine blade with a curing agent. The first region is the contact surface where the elastomer 14 and the glass fiber cloth 13 are fused and fixed, and the second region is the entire area of ​​the glass fiber cloth 13 excluding the first region. The microwave detection board is exposed to the atmosphere and is used to detect moisture or ice adsorbed on its surface due to the influence of the atmospheric environment.

[0028] The elastomer 14 is made of polyurethane and is designed to be flexible overall, allowing for a certain degree of bending deformation. The edges of the glass fiber cloth 13 can be folded as desired. The thickness of the elastomer 14 is up to 5 mm, and the thickness of the glass fiber cloth 13 is up to 1 mm, significantly reducing wind resistance.

[0029] To attach an ice detection device to the surface of a wind turbine blade, first polish the blade surface at the location where the ice detection device is to be attached. Then, apply a quick-bonding adhesive to a first region of the lower surface of the glass fiber cloth 13. Then, fix the first region of the lower surface of the glass fiber cloth 13 flatly on the surface of the wind turbine blade, allowing the glass fiber cloth 13 to naturally stretch around. After fixing the first region of the lower surface of the glass fiber cloth 13, attach the glass fiber cloth 13 to the surface of the wind turbine blade. Then, apply a special curing agent to the glass fiber cloth 13. After the curing agent cures, the glass fiber cloth 13 fuses to the surface of the wind turbine blade. Because the small area of ​​the elastomer 14 allows for proper bending, and the large area of ​​the glass fiber cloth 13 allows for arbitrary bending, the ice detection device of this application can be attached to any position on the surface of wind turbine blades of various shapes.

[0030] As shown in Figure 2, as an optional embodiment, the ice detection device for wind turbine blades further includes a solar panel, a lithium battery, and a power management module, which is the power control module 11 in Figures 1 and 3.

[0031] The solar panel, the lithium battery and the power management module are all sealed in elastomer 14, and the surfaces of the microwave detection board and the solar panel are all in contact with air. The power management module is connected to the solar panel, the lithium battery, the high-frequency circuit board and the microcontroller 9, respectively, and is used to adjust the charging voltage of the solar panel and the discharging voltage of the lithium battery to supply power to the high-frequency circuit board and the microcontroller 9.

[0032] In an alternative embodiment, the ice detection device for wind turbine blades further includes a wireless communication module 12 .

[0033] The wireless communication module 12 is sealed in elastomer 14, and is connected to the microcontroller 9. The wireless communication module 12 is used to wirelessly transmit icing information to the Master station. The wireless communication module 12 is connected to the power management module.

[0034] In an optional embodiment, the icing detection device for wind turbine blades includes two microwave detection boards, two high-frequency circuit boards, two solar panels, and two lithium batteries. As shown in FIGS. 3 and 4, the two microwave detection boards are a first microwave detection board 5 and a second microwave detection board 6, the two high-frequency circuit boards are a first high-frequency circuit board 7 and a second high-frequency circuit board 8, the two solar panels are a first solar panel 3 and a second solar panel 4, and the two lithium batteries are a first lithium battery 1 and a second lithium battery 2. The two sets of microwave detection boards, high-frequency circuit boards, solar panels, and lithium batteries operate simultaneously and can back up each other. A failure in one set of systems does not affect the continued operation of the other set, ensuring device reliability. The microcontroller 9 can also reduce power consumption by controlling the time-sharing supply of operating voltage to the high-frequency circuit board, wireless communication module 12, and temperature detection module 10 via a digital port. The dielectric constants of air, water, and ice are different, and therefore affect the time-domain characteristics of electromagnetic fields differently. The microwave detection unit, which consists of two sets of high-frequency circuit boards and microwave detection boards, can operate independently without affecting each other and can be powered independently. The two sets of microwave detection units can also back up each other, so that even if one set fails, the other set can continue to operate.

[0035] In an alternative embodiment, obtaining icing information based on microwave parameters and temperature detection values ​​specifically includes determining icing conditions and ice thickness.

[0036] (1) Identifying the icing condition specifically involves: If the microwave wavelength of the returned high frequency microwave signal is greater than the first wavelength preset value × 0.95, the icing state information output is a dry state; If the temperature detection value is greater than 5°C and the microwave wavelength of the returned high frequency microwave signal is less than the second wavelength setting value, the output icing state information is a water accumulation state; When the temperature detection value is less than 5°C, the microwave wavelength of the returned high-frequency microwave signal is greater than the second wavelength setting value and less than the first wavelength preset value × 0.95, and the fluctuation range of the microwave wavelength of the returned high-frequency microwave signal within 10 seconds is greater than the first wavelength preset value × 0.1, the output icing state information is a water accumulation state; When the temperature detection value is less than 5°C, the microwave wavelength of the returned high-frequency microwave signal is greater than the second wavelength setting value and less than the first wavelength preset value × 0.95, the fluctuation range of the microwave wavelength of the returned high-frequency microwave signal within 10 seconds is less than the first wavelength preset value × 0.1, and the first wavelength preset value is continuously decreasing, the icing state information output is an ice accumulation state; and after a situation occurs in which the temperature detection value is less than 5°C, the microwave wavelength of the returned high-frequency microwave signal is greater than the second wavelength setting value and less than the first wavelength preset value × 0.95, the fluctuation range of the microwave wavelength of the returned high-frequency microwave signal within 10 seconds is less than the first wavelength preset value × 0.1 and the first wavelength preset value continuously decreases, if a situation occurs again in which the fluctuation range of the first wavelength preset value within 10 seconds is greater than the first wavelength preset value × 0.1, the output icing state information is an ice melting state.

[0037] (2) Identifying ice thickness specifically involves: obtaining a compensated phase value based on the microwave phase of the returned high frequency microwave signal; obtaining a compensated phase area deviation diagonal matrix based on the compensated phase values; calculating a coefficient vector based on the compensated phase regional deviation diagonal matrix and the laboratory measured regional empirical linear equation; and calculating ice thickness based on the coefficient vector.

[0038] This application further provides application scenarios for the above-described icing detection device for wind turbine blades. Specifically, the icing detection device for wind turbine blades provided in this embodiment can be applied to wind turbine equipment detection scenarios. Wind turbine equipment detection includes a wind turbine blade detection process and a wind turbine blade maintenance process, in which the wind turbine blades are detected to obtain detection results, and then the wind turbine blades are maintained. The wind turbine blade icing detection device provided in this embodiment belongs to the detection device in the wind turbine blade detection process.

[0039] In this application, a high-frequency microwave signal is transmitted via a high-frequency circuit board to a microwave detection board, which generates an external microwave electromagnetic field during the transmission process. When the surface of the microwave detection board comes into contact with deposits of different dielectric constants on the wind turbine blades, the time-domain characteristics of the microwave electromagnetic field change, and the time-domain characteristics of the high-frequency microwave signal also change during the return process. The high-frequency circuit board samples the returned high-frequency microwave signal to obtain microwave parameters, and the microcontroller obtains icing information based on the microwave parameters and the temperature detected by the temperature detection module, thereby solving the problem of ice-water mixtures affecting the accuracy of icing detection on wind turbine blades. At the same time, the elastomer sealing and the fusion bonding of the glass fiber cloth to the wind turbine blades reduce wind resistance and improve robustness, allowing the device to be attached to any position on the surface of wind turbine blades of various shapes.

[0040] Each embodiment of this specification will be described step by step, with each embodiment focusing on the differences from other embodiments, and the same or similar parts between the embodiments may be referred to each other.

[0041] Although the present specification uses specific examples to explain the principles and embodiments of the present application, the description of the above examples is merely intended to help understand the method and core idea of ​​the present application. Furthermore, those skilled in the art can change both the specific embodiments and the scope of application based on the idea of ​​the present application. In summary, the contents of the present specification should not be construed as limiting the present application. [Explanation of symbols]

[0042] 1 - first lithium battery, 2 - second lithium battery, 3 - first solar panel, 4 - second solar panel, 5 - first microwave detection board, 6 - second microwave detection board, 7 - first high frequency circuit board, 8 - second high frequency circuit board, 9 - microcontroller, 10 - temperature detection module, 11 - power control module, 12 - wireless communication module, 13 - glass fiber cloth, 14 - elastomer.

Claims

1. An ice detection device for a blade of a wind power generator, the ice detection device for a blade of a wind power generator specifically includes a microwave detection board, a high-frequency circuit board, a microcontroller and a temperature detection module; the microwave output terminal of the high frequency circuit board is connected to the microwave input terminal of the microwave detection board, the microwave input terminal of the high frequency circuit board is connected to the microwave output terminal of the microwave detection board, the microcontroller is connected to the high frequency circuit board, the temperature detection module is connected to the microcontroller, the high frequency circuit board transmits a high frequency microwave signal to the microwave detection board, and the microwave detection board generates an external microwave electromagnetic field during the process of transmitting the high frequency microwave signal; When the surface of the microwave detection board comes into contact with the deposits with different dielectric constants on the blades of the wind power generator, the time domain characteristics of the microwave electromagnetic field will change, and at the same time, the time domain characteristics of the high frequency microwave signal will also change during the return process. The high frequency circuit board will perform sampling processing on the returned high frequency microwave signal to obtain microwave parameters. The microcontroller will obtain icing information based on the microwave parameters and the temperature detection value detected by the temperature detection module. An ice detection device for wind turbine blades, characterized in that the microwave parameters specifically include microwave phase and microwave wavelength, and the icing information specifically includes icing status and ice thickness.

2. Specifically, obtaining icing information based on microwave parameters and temperature detection values ​​includes: Identifying icing conditions; and If the microwave wavelength of the returned high frequency microwave signal is greater than the first wavelength preset value x 0.95, the icing state information to be output is a dry state; If the temperature detection value is greater than 5°C and the microwave wavelength of the returned high frequency microwave signal is less than the second wavelength setting value, the icing state information output is a water accumulation state; When the temperature detection value is less than 5°C, the microwave wavelength of the returned high-frequency microwave signal is greater than the second wavelength setting value and less than the first wavelength preset value x 0.95, and the fluctuation range of the microwave wavelength of the returned high-frequency microwave signal within 10 seconds is greater than the first wavelength preset value x 0.1, the icing state information to be output is a water accumulation state; When the temperature detection value is less than 5°C, the microwave wavelength of the returned high frequency microwave signal is greater than the second wavelength setting value and less than the first wavelength preset value x 0.95, the fluctuation range of the microwave wavelength of the returned high frequency microwave signal within 10 seconds is less than the first wavelength preset value x 0.1, and the first wavelength preset value is continuously decreasing, the icing state information output is an ice accumulation state; When the temperature detection value is less than 5°C, the microwave wavelength of the returned high frequency microwave signal is greater than the second wavelength setting value and less than the first wavelength preset value × 0.95, the fluctuation range of the microwave wavelength of the returned high frequency microwave signal within 10 seconds is less than the first wavelength preset value × 0.1, and the first wavelength preset value continuously decreases, and then the fluctuation range of the first wavelength preset value within 10 seconds is greater than the first wavelength preset value × 0.1 again, the icing state information output is ice melting state; Identifying ice thickness; obtaining a compensated phase value based on the microwave phase of the returned high frequency microwave signal; obtaining a compensated phase area deviation diagonal matrix based on the compensated phase values; calculating a coefficient vector based on the compensated phase regional deviation diagonal matrix and the laboratory measured regional empirical linear equation; and calculating an ice thickness based on the coefficient vector.

3. The ice detection device for a blade of a wind turbine generator further includes an elastomer and a glass fiber cloth; the microwave detection board, the high frequency circuit board, the microcontroller, and the temperature detection module are all sealed in the elastomer; The ice detection device for wind power generator blades according to claim 1, wherein the elastomer is fused and fixed to the glass fiber cloth via polyurethane.

4. The ice detection device for wind turbine blades further includes a solar panel, a lithium battery, and a power management module; 4. The ice detection device for wind turbine blades according to claim 3, wherein the solar panel, the lithium battery, and the power management module are all sealed in the elastomer, the surfaces of the microwave detection board and the solar panel are all in contact with air, the power management module is connected to the solar panel, the lithium battery, the high-frequency circuit board, and the microcontroller, respectively, and the power management module is used to adjust the charging voltage of the solar panel and the discharging voltage of the lithium battery to supply power to the high-frequency circuit board and the microcontroller.

5. The ice detection device for the blades of the wind turbine generator further includes a wireless communication module; 5. The ice detection device for wind turbine blades according to claim 4, wherein the wireless communication module is sealed in the elastomer, the wireless communication module is connected to the microcontroller, and the wireless communication module is used to wirelessly transmit icing information to a master station.

6. 5. The icing detection device for wind turbine blades as described in claim 4, wherein there are two of each of the microwave detection board, high-frequency circuit board, solar panel, and lithium battery in the icing detection device for wind turbine blades.

7. 4. The ice detection device for wind turbine blades according to claim 3, wherein a first region of the lower surface of the glass fiber cloth is fixed to the surface of the wind turbine blade by an adhesive, and a second region of the lower surface of the glass fiber cloth is fixed to the surface of the wind turbine blade by a hardener.

8. 8. The ice detection device for wind turbine blades according to claim 7, wherein the first region is a contact surface where the elastomer and the glass fiber cloth are fused and fixed, and the second region is the entire area of ​​the glass fiber cloth excluding the first region.

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