A coherent wind measurement laser radar system, method, device and storage medium

Abstract

The present application discloses a coherent wind measurement laser radar system, method, device and storage medium, which relates to the technical field of wind speed measurement, and comprises: a spectrometer, which is used to perform spectroscopic processing on an incident laser beam to obtain an initial signal light and a reference light; an amplifier, which is used to amplify the initial signal light to obtain an amplified signal light; a motor, which is used to control a movable component to move at a target moving speed; a movable component, which is internally provided with a circulator and a collimator; the amplified signal light output by the amplifier is emitted to the atmosphere through the circulator and the collimator to generate a backscattered light signal; the backscattered light signal is passed through the collimator and the circulator to obtain a target signal light; an acquisition card, which is used to acquire frequency shift data obtained based on the reference light and the target signal light, so as to determine the atmospheric wind speed data; by controlling the movable component to move at the target speed, the Doppler frequency shift of the scattered light on the target surface is located outside the bandwidth of the acquisition card, thereby realizing wind speed measurement without blind spots.

Description

Technical Field

[0001] The present invention relates to the technical field of wind speed measurement, and in particular to a coherent wind measurement laser radar system, method, device and storage medium. Background Art

[0002] There are many ways to measure wind speed and direction, such as cup anemometer, ultrasonic anemometer and wind laser radar, and coherent wind radar is a type of wind laser radar.

[0003] The basic principle of this radar is that the seed laser output is separated by a beam splitter to extract a small portion of light as reference light, and the other portion of light is amplified by an amplifier. The light output by the amplifier is emitted to the atmosphere through a fiber circulator and a collimator. The atmosphere generates backscattered signal light, which is then output to a 2×2 fiber coupler after passing through a collimator and a fiber circulator. At the same time, the reference light is also connected to the 2×2 coupler to mix with the signal light. The coherent signal is subsequently passed through a detection and acquisition system to achieve the measurement of the atmospheric wind field. In existing coherent wind laser radar systems, when using a coherent wind laser radar system to measure wind speed, the scattered light on surfaces such as the fiber end face will drown out the scattered light scattered back by the atmosphere, resulting in a blind spot in the laser radar system, and the wind speed nearby cannot be measured.

[0004] In summary, the existing coherent wind laser radar system still has room for improvement, especially in terms of data collection blind spots. Therefore, how to design a coherent wind laser radar system without wind speed measurement blind spots is a problem to be solved in this field. Summary of the invention

[0005] In view of this, the purpose of the present invention is to provide a coherent wind measurement laser radar system, method, device and storage medium, which uses a motor to drive the circulator and the collimator to move, so that the Doppler frequency shift corresponding to the scattered light on the target surface is outside the acquisition bandwidth of the acquisition card, thereby realizing wind speed measurement without blind spots. The specific scheme is as follows:

[0006] In a first aspect, the present application discloses a coherent wind measurement laser radar system, comprising:

[0007] A beam splitter, used for performing beam splitting processing on an incident laser beam to obtain an initial signal light and a reference light;

[0008] An amplifier, used for amplifying the initial signal light to obtain an amplified signal light;

[0009] a motor, for controlling the movable component to reciprocate at a target moving speed;

[0010] A movable component, wherein a circulator and a collimator are arranged inside; wherein the amplified signal light output by the amplifier passes through the circulator and the collimator in sequence and is emitted into the atmosphere to generate a corresponding backscattered light signal; the backscattered light signal passes through the collimator and the circulator in sequence to obtain the target signal light output by the circulator;

[0011] An acquisition card, used for acquiring frequency shift data obtained after the reference light and the target signal light are mixed and coherent, so as to determine the current atmospheric wind speed data based on the acquired data;

[0012] The target moving speed is determined based on the acquisition bandwidth of the acquisition card to ensure that when the movable component reciprocates at the target moving speed, the Doppler frequency shift corresponding to the scattered light formed on the target surface of the movable component is outside the acquisition bandwidth of the acquisition card.

[0013] Optionally, a seed laser is further included; wherein the seed laser is used to generate the incident laser beam and emit the incident laser beam to the beam splitter.

[0014] Optionally, a 2×2 coupler is also included; wherein the 2×2 coupler is used to perform frequency mixing and coherence on the reference light and the target signal light to obtain coherent light, and to split the coherent light in a preset ratio to obtain a first coherent light split and a second coherent light split, so as to perform photoelectric conversion on the first coherent light split and the second coherent light split to obtain the frequency shift data.

[0015] Optionally, a balanced photodetector is also included; wherein the balanced photodetector is used to perform photoelectric conversion on the first coherent light splitter and the second coherent light splitter, and perform differential operation on the electrical signals obtained after the photoelectric conversion to obtain the frequency shift data.

[0016] Optionally, the acquisition card is also used to perform echo accumulation on the collected frequency shift data to obtain enhanced frequency shift data, and perform fast Fourier transform on the enhanced frequency shift data to convert the enhanced frequency shift data into a spectrum signal, so as to determine the current atmospheric wind speed data based on the spectrum signal.

[0017] Optionally, an industrial computer is also included, wherein the industrial computer is used to receive the spectrum signal and perform inversion calculation on the spectrum signal to obtain the current atmospheric wind speed data.

[0018] Optionally, the motor is also used to transmit the current motor speed parameters to the acquisition card; correspondingly, the acquisition card is also used to determine whether the current moving speed of the movable component is the target moving speed based on the received motor speed parameters, and if so, start the step of collecting the frequency shift data obtained after the reference light and the target signal light are mixed and coherent.

[0019] In a second aspect, the present application provides a wind speed detection method, which is applied to the aforementioned coherent wind measurement laser radar system, wherein a spectrometer in the coherent wind measurement laser radar system performs spectroscopic processing on an incident laser beam to obtain an initial signal light and a reference light; wherein the method comprises:

[0020] Controlling a movable component having a circulator and a collimator lens disposed therein to reciprocate at a target moving speed; wherein, during the reciprocating motion, the amplified signal light obtained by amplifying the initial signal light is sequentially emitted into the atmosphere through the circulator and the collimator lens to generate a corresponding backscattered light signal;

[0021] The frequency shift data obtained by mixing and coherently mixing the target signal light and the reference light is collected by an acquisition card in the coherent wind measurement laser radar system, so as to determine the current atmospheric wind speed data based on the collected data; the target signal light is the signal light obtained after the backscattered light signal passes through the collimator and the circulator in sequence;

[0022] The target moving speed is determined based on the acquisition bandwidth of the acquisition card to ensure that when the movable component reciprocates at the target moving speed, the Doppler frequency shift corresponding to the scattered light formed on the target surface of the movable component is outside the acquisition bandwidth of the acquisition card.

[0023] In a third aspect, the present application provides an electronic device, comprising a processor and a memory; wherein the memory is used to store a computer program, and the computer program is loaded and executed by the processor to implement the aforementioned wind speed detection method.

[0024] In a fourth aspect, the present application provides a computer-readable storage medium for storing a computer program, wherein the computer program implements the aforementioned wind speed detection method when executed by a processor.

[0025] The coherent wind laser radar system in the present application includes: a spectrometer, an amplifier and an acquisition card; wherein the spectrometer is used to perform spectroscopic processing on an incident laser beam to obtain an initial signal light and a reference light, and the amplifier is used to amplify the initial signal light to obtain an amplified signal light; and the coherent wind laser radar system also includes a motor and a movable part; wherein the motor is used to control the movable part to reciprocate at a target moving speed; a circulator and a collimator are arranged inside the movable part; wherein the amplified signal light output by the amplifier passes through the circulator and the collimator in turn and is emitted to the large In the air, to generate a corresponding backscattered light signal; the backscattered light signal passes through the collimator and the circulator in sequence to obtain the target signal light output by the circulator; the acquisition card is used to collect the frequency shift data obtained after the reference light and the target signal light are mixed and coherent, so as to determine the current atmospheric wind speed data based on the collected data; wherein the target moving speed is determined based on the acquisition bandwidth of the acquisition card to ensure that when the movable component reciprocates at the target moving speed, the Doppler frequency shift corresponding to the scattered light formed on the target surface of the movable component is outside the acquisition bandwidth of the acquisition card. It can be seen from this that the present application can drive the movable component to reciprocate at the target moving speed by a motor. When the movable component reciprocates at the target moving speed, the Doppler frequency shift corresponding to the scattered light formed on the target surface of the movable component is outside the acquisition bandwidth of the acquisition card, while the Doppler frequency shift corresponding to the target signal light is within the acquisition range of the acquisition card, thereby avoiding the influence of scattered light on the collected data and realizing wind speed measurement without blind spots.

[0026] The present invention also provides a wind speed detection method, which has the same beneficial effects as the above-mentioned coherent wind measurement laser radar system. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0028] Figure 1 A schematic diagram of a coherent wind measurement laser radar system provided for this application;

[0029] Figure 2 A schematic diagram of the structure of a coherent wind measurement laser radar system provided in this application;

[0030] Figure 3A schematic diagram of a circulator structure provided for this application;

[0031] Figure 4 A schematic diagram of the acquisition bandwidth of an acquisition card provided for this application;

[0032] Figure 5 A schematic diagram of a 2×2 coupler structure provided in this application;

[0033] Figure 6 A flow chart of a wind speed detection method provided in this application;

[0034] Figure 7 A structural diagram of an electronic device provided for this application. DETAILED DESCRIPTION

[0035] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0036] The existing coherent wind measurement lidar system can collect the backscattered light signals of the atmosphere and determine the current atmospheric wind speed data based on the collected backscattered light signals. Although the measurement of the atmospheric wind speed data is achieved to a certain extent, there are certain measurement blind spots. The present application utilizes a motor to drive the movement of the circulator and the collimator, so that the Doppler frequency shift corresponding to the scattered light formed on the target surface of the circulator and the collimator is located outside the acquisition bandwidth of the acquisition card, thereby achieving wind speed measurement without blind spots.

[0037] See also Figure 1 As shown, the embodiment of the present invention discloses a coherent wind measurement laser radar system, including a spectrometer 11, an amplifier and an acquisition card; wherein the spectrometer is used to perform spectroscopic processing on an incident laser beam to obtain an initial signal light and a reference light, and the amplifier is used to amplify the initial signal light to obtain an amplified signal light; and the coherent wind measurement laser radar system also includes a motor and a movable component; wherein,

[0038] The motor is used to control the movable component to reciprocate at a target moving speed;

[0039] A circulator and a collimator are arranged inside the movable component; wherein the amplified signal light output by the amplifier passes through the circulator and the collimator in sequence and is emitted into the atmosphere to generate a corresponding backscattered light signal; the backscattered light signal passes through the collimator and the circulator in sequence to obtain the target signal light output by the circulator;

[0040] The acquisition card is used to acquire frequency shift data obtained after the reference light and the target signal light are mixed and coherent, so as to determine the current atmospheric wind speed data based on the acquired data;

[0041] The target moving speed is determined based on the acquisition bandwidth of the acquisition card to ensure that when the movable component reciprocates at the target moving speed, the Doppler frequency shift corresponding to the scattered light formed on the target surface of the movable component is outside the acquisition bandwidth of the acquisition card.

[0042] In this embodiment, the coherent wind laser radar system structure is shown in Figure 2 As shown, first, an incident laser beam can be generated by a seed laser in a coherent wind laser radar system, and the incident laser beam is emitted to a spectrometer 11, wherein the spectrometer 11 is used to perform spectroscopic processing on the incident laser beam at a preset spectroscopic ratio, and the laser light that accounts for a larger proportion of the incident laser beam obtained after the spectroscopic processing is determined as the initial signal light, and is distributed to the amplifier 12 for power amplification processing, and correspondingly, the laser light that accounts for a smaller proportion of the incident laser beam is determined as the reference light, and the reference light is distributed to the 2×2 coupler. It should be pointed out that the preset spectroscopic ratio adopted by the above-mentioned spectrometer 11 can be configured based on the actual application needs of the user, and is not specifically limited here. It should be noted that the incident laser beam generated by the above-mentioned seed laser is a continuous light with a narrow line width, rather than an intermittent beam. By spectroscopically splitting the continuous incident laser beam, it is ensured that the initial signal light and the reference light obtained after the spectroscopic processing are also continuous light, thereby ensuring the continuous and uninterrupted measurement of the atmospheric wind speed.

[0043] In this embodiment, the power of the initial signal light is relatively small. After the initial signal light passes through the port a, port b and collimator of the circulator and enters the atmosphere, it may be insufficient to generate a corresponding backscattered light signal or the generated backscattered light signal is weak and difficult to be captured by the collimator. Therefore, it is necessary to amplify the initial signal light by the amplifier 12 at a preset magnification to obtain the amplified signal light. The structure of the above circulator is as follows: Figure 3 As shown. It is understandable that users can select an amplifier with a corresponding magnification according to their own application needs, and the above preset magnification is not specifically limited here. By amplifying the initial signal light, it is ensured that the amplified signal light can generate corresponding backscattered light after entering the atmosphere, thereby ensuring the reliability of the coherent wind laser radar system.

[0044] In this embodiment, the movable component 13 includes a circulator and a collimator, and the motor 14 drives the movable component 13 composed of the circulator and the collimator to reciprocate at a target speed through a preset rotation speed. The above-mentioned motor 14 is also used to transmit the current motor speed parameter to the acquisition card 15. Correspondingly, the acquisition card 15 is also used to determine whether the current moving speed of the movable component 13 is the target moving speed based on the received motor speed parameter. If the current moving speed of the movable component 13 is the target moving speed, the step of collecting the frequency shift data obtained after the reference light and the target signal light are mixed and coherent is started. It should be noted that when the circulator and the collimator are stationary, the Doppler frequency shift corresponding to the scattered light of part of the optical fiber end faces on the circulator and the collimator is within the acquisition bandwidth of the acquisition card 15. The bandwidth of the acquisition card 15 is as follows: Figure 4 As shown, the frequency of the scattered light can be collected by the acquisition card 15, and the intensity of the scattered light at the end face of the optical fiber is greater than the backscattered light generated by the atmosphere. Therefore, the scattered light at the end face of the optical fiber will drown out the backscattered light generated by the atmosphere, thereby causing the coherent wind laser radar system to produce a measurement blind area, where Figure 4 The AOM (Acousto-Optic Modulator) frequency shift in the acousto-optic modulator refers to the frequency shift caused by the change of the material and its refractive index caused by the sound wave fluctuations flowing through the acousto-optic modulator when light passes through the acousto-optic modulator.

[0045] In this embodiment, the backscattered light generated by the atmosphere passes through the collimator, the port b and the port c of the circulator in sequence to obtain the target signal light. It should be noted that when the movable component 13 reciprocates at the target moving speed, the target surface of the movable component 13, that is, the Doppler frequency shift corresponding to the scattered light formed on the end face of the optical fiber is outside the acquisition bandwidth of the acquisition card 15. The movable component 13 is driven to move by the motor 14, so that the Doppler frequency shift corresponding to the scattered light formed on the end face of the optical fiber is outside the acquisition bandwidth of the acquisition card 15, thereby realizing wind speed measurement without blind spots.

[0046] In this embodiment, see Figure 5As shown, first, the target signal light and the reference light are received by using the port 1 and the port 2 of the 2×2 coupler, and the target signal light output by the circulator and the reference light output by the optical splitter 11 are mixed and coherently mixed by the 2×2 coupler to obtain coherent light, and the coherent light is split in a preset ratio to obtain the first coherent light split and the second coherent light split, and the first coherent light split and the second coherent light split are output through the port 3 and the port 4, and the first coherent light split and the second coherent light split are photoelectrically converted by the balanced photodetector, and the electrical signal obtained after the photoelectric conversion is differentially operated to obtain frequency shift data; after obtaining the frequency shift data, the frequency shift data is collected by the acquisition card 15, and the collected frequency shift data is echo accumulated to obtain enhanced frequency shift data, and the enhanced frequency shift data is fast Fourier transformed to convert the enhanced frequency shift data into a spectrum signal. The spectrum signal is received by the industrial computer, and the spectrum signal is inverted and calculated, and finally the current atmospheric wind speed data is obtained.

[0047] Through the above technical solution, this embodiment uses a motor to drive the movable component to move at a target speed, and enables data communication between the motor and the acquisition card, thereby ensuring that the frequency shift data is collected when the moving speed of the movable component reaches the target moving speed, and ensuring that the Doppler frequency shift corresponding to the scattered light on the target surface is outside the bandwidth of the acquisition card, thereby realizing wind speed measurement without blind spots.

[0048] Based on the above embodiment, it can be known that the present application can make the motor drive the circulator and the collimator to reciprocate at the target speed to achieve wind speed measurement without blind spots. Next, the corresponding wind speed detection method will be described in this embodiment. Figure 6 As shown, the embodiment of the present application also discloses a wind speed detection method, including:

[0049] Step S11, performing a splitting process on the incident laser beam by a beam splitter in the coherent wind laser radar system to obtain an initial signal light and a reference light.

[0050] Step S12, controlling a movable component having a circulator and a collimator lens disposed therein to perform reciprocating motion at a target moving speed; wherein, during the reciprocating motion, the amplified signal light obtained by amplifying the initial signal light is sequentially emitted into the atmosphere through the circulator and the collimator lens to generate a corresponding backscattered light signal.

[0051] Step S13, collecting the frequency shift data obtained by mixing and coherently mixing the target signal light and the reference light through the acquisition card in the coherent wind measurement laser radar system, so as to determine the current atmospheric wind speed data based on the collected data; the target signal light is the signal light obtained after the backscattered light signal passes through the collimator and the circulator in sequence; wherein, the target moving speed is determined based on the acquisition bandwidth of the acquisition card, so as to ensure that when the movable component reciprocates at the target moving speed, the Doppler frequency shift corresponding to the scattered light formed on the target surface of the movable component is outside the acquisition bandwidth of the acquisition card.

[0052] The above wind speed detection method has the same beneficial effects as the above coherent wind laser radar system, which will not be described in detail here.

[0053] In this embodiment, the incident laser beam is firstly split by the beam splitter in the coherent wind laser radar system to obtain the initial signal light and the reference light; then the movable component provided with a circulator and a collimator is controlled to reciprocate at the target moving speed; wherein, during the reciprocating motion, the amplified signal light obtained by amplifying the initial signal light is sequentially emitted into the atmosphere through the circulator and the collimator to generate the corresponding backscattered light signal; finally, the frequency shift data obtained by mixing and cohering the target signal light and the reference light is collected by the acquisition card in the coherent wind laser radar system, so as to determine the current atmospheric wind speed data based on the collected data; the target signal light is the signal light obtained after the backscattered light signal sequentially passes through the collimator and the circulator; wherein, the target moving speed is determined based on the acquisition bandwidth of the acquisition card, so as to ensure that when the movable component reciprocates at the target moving speed, the Doppler frequency shift corresponding to the scattered light formed on the target surface of the movable component is outside the acquisition bandwidth of the acquisition card. Through the above technical solution, the motor can drive the movable component to reciprocate at the target moving speed. When the movable component reciprocates at the target moving speed, the Doppler frequency shift corresponding to the scattered light formed on the target surface of the movable component is outside the acquisition bandwidth of the acquisition card, while the Doppler frequency shift corresponding to the target signal light is within the acquisition range of the acquisition card, thereby avoiding the influence of scattered light on the collected data and realizing wind speed measurement without blind spots.

[0054] Furthermore, the present application also discloses an electronic device. Figure 7 This is a structural diagram of an electronic device 20 according to an exemplary embodiment. The content in the diagram cannot be regarded as any limitation on the scope of use of the present application.

[0055] Figure 7A schematic diagram of the structure of an electronic device 20 provided in an embodiment of the present application. The electronic device 20 may specifically include: at least one processor 21, at least one memory 22, a power supply 23, a communication interface 24, an input / output interface 25, and a communication bus 26. The memory 22 is used to store a computer program, which is loaded and executed by the processor 21 to implement the relevant steps in the wind speed detection method disclosed in any of the aforementioned embodiments. In addition, the electronic device 20 in this embodiment may specifically be an electronic computer.

[0056] In this embodiment, the power supply 23 is used to provide working voltage for each hardware device on the electronic device 20; the communication interface 24 can create a data transmission channel between the electronic device 20 and the external device, and the communication protocol it follows is any communication protocol that can be applied to the technical solution of the present application, and is not specifically limited here; the input and output interface 25 is used to obtain external input data or output data to the outside world, and its specific interface type can be selected according to specific application needs and is not specifically limited here.

[0057] In addition, the memory 22 as a carrier for storing resources may be a read-only memory, a random access memory, a disk or an optical disk, etc. The resources stored thereon may include an operating system 221, a computer program 222, etc., and the storage method may be temporary storage or permanent storage.

[0058] The operating system 221 is used to manage and control the hardware devices and computer program 222 on the electronic device 20, which can be Windows Server, Netware, Unix, Linux, etc. In addition to including a computer program that can be used to complete the wind speed detection method performed by the electronic device 20 disclosed in any of the aforementioned embodiments, the computer program 222 can further include a computer program that can be used to complete other specific tasks.

[0059] Furthermore, the present application also discloses a computer-readable storage medium for storing a computer program; wherein the computer program, when executed by a processor, implements the wind speed detection method disclosed above. The specific steps of the method can refer to the corresponding contents disclosed in the above embodiments, and will not be repeated here.

[0060] In this specification, each embodiment is described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the embodiments can be referred to each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant parts can be referred to the method part.

[0061] Professionals may further appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, computer software, or a combination of the two. In order to clearly illustrate the interchangeability of hardware and software, the composition and steps of each example have been generally described in the above description according to function. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professionals and technicians may use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of this application.

[0062] The steps of the method or algorithm described in conjunction with the embodiments disclosed herein may be implemented directly using hardware, a software module executed by a processor, or a combination of the two. The software module may be placed in a random access memory (RAM), a memory, a read-only memory (ROM), an electrically programmable ROM, an electrically erasable programmable ROM, a register, a hard disk, a removable disk, a CD-ROM, or any other form of storage medium known in the art.

[0063] Finally, it should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0064] The technical solution provided by the present application is introduced in detail above. Specific examples are used in this article to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the method of the present application and its core idea. At the same time, for general technical personnel in this field, according to the idea of ​​the present application, there will be changes in the specific implementation method and application scope. In summary, the content of this specification should not be understood as a limitation on the present application.

Claims

1. A coherent wind laser radar system, characterized in that: It includes a spectrometer, an amplifier and an acquisition card; wherein the spectrometer is used to perform spectroscopic processing on an incident laser beam to obtain an initial signal light and a reference light, and the amplifier is used to amplify the initial signal light to obtain an amplified signal light; and the coherent wind laser radar system also includes a motor and a movable part; wherein, The motor is used to control the movable component to reciprocate at a target moving speed; A circulator and a collimator are arranged inside the movable component; wherein the amplified signal light output by the amplifier passes through the circulator and the collimator in sequence and is emitted into the atmosphere to generate a corresponding backscattered light signal; the backscattered light signal passes through the collimator and the circulator in sequence to obtain the target signal light output by the circulator; The acquisition card is used to acquire frequency shift data obtained after the reference light and the target signal light are mixed and coherent, so as to determine the current atmospheric wind speed data based on the acquired data; The target moving speed is determined based on the acquisition bandwidth of the acquisition card to ensure that when the movable component reciprocates at the target moving speed, the Doppler frequency shift corresponding to the scattered light formed on the target surface of the movable component is outside the acquisition bandwidth of the acquisition card.

2. The coherent wind laser radar system according to claim 1, characterized in that: A seed laser is also included; wherein the seed laser is used to generate the incident laser beam and emit the incident laser beam to the beam splitter.

3. The coherent wind laser radar system according to claim 1, characterized in that: It also includes a 2×2 coupler; wherein the 2×2 coupler is used to mix the reference light and the target signal light to obtain coherent light, and split the coherent light in a preset ratio to obtain a first coherent light split and a second coherent light split, so as to perform photoelectric conversion on the first coherent light split and the second coherent light split to obtain the frequency shift data.

4. The coherent wind laser radar system according to claim 3, characterized in that: It also includes a balanced photodetector; wherein the balanced photodetector is used to perform photoelectric conversion on the first coherent light splitter and the second coherent light splitter, and perform differential operation on the electrical signals obtained after the photoelectric conversion to obtain the frequency shift data.

5. The coherent wind laser radar system according to claim 1, characterized in that: The acquisition card is also used to perform echo accumulation on the collected frequency shift data to obtain enhanced frequency shift data, and perform fast Fourier transform on the enhanced frequency shift data to convert the enhanced frequency shift data into a spectrum signal, so as to determine the current atmospheric wind speed data based on the spectrum signal.

6. The coherent wind laser radar system according to claim 5, characterized in that: It also includes an industrial computer, wherein the industrial computer is used to receive the spectrum signal and perform inversion calculation on the spectrum signal to obtain the current atmospheric wind speed data.

7. The coherent wind laser radar system according to any one of claims 1 to 6, characterized in that: The motor is also used to transmit the current motor speed parameters to the acquisition card; correspondingly, the acquisition card is also used to determine whether the current moving speed of the movable component is the target moving speed based on the received motor speed parameters, and if so, start the step of collecting the frequency shift data obtained after the reference light and the target signal light are mixed and coherent.

8. A wind speed detection method, characterized in that: Applied to the coherent wind laser radar system according to any one of claims 1 to 7, the beam splitter in the coherent wind laser radar system performs beam splitting processing on an incident laser beam to obtain an initial signal light and a reference light; wherein the method comprises: Controlling a movable component having a circulator and a collimator lens disposed therein to reciprocate at a target moving speed; wherein, during the reciprocating motion, the amplified signal light obtained by amplifying the initial signal light is sequentially emitted into the atmosphere through the circulator and the collimator lens to generate a corresponding backscattered light signal; The frequency shift data obtained by mixing and coherently mixing the target signal light and the reference light is collected by an acquisition card in the coherent wind measurement laser radar system, so as to determine the current atmospheric wind speed data based on the collected data; the target signal light is the signal light obtained after the backscattered light signal passes through the collimator and the circulator in sequence; The target moving speed is determined based on the acquisition bandwidth of the acquisition card to ensure that when the movable component reciprocates at the target moving speed, the Doppler frequency shift corresponding to the scattered light formed on the target surface of the movable component is outside the acquisition bandwidth of the acquisition card.

9. An electronic device, characterized in that: The electronic device comprises a processor and a memory; wherein the memory is used to store a computer program, and the computer program is loaded and executed by the processor to implement the wind speed detection method as claimed in claim 8.

10. A computer-readable storage medium, characterized in that: Used to store a computer program, which, when executed by a processor, implements the wind speed detection method as claimed in claim 8.

Images