An acoustic phased array wind lidar device and system

Abstract

The utility model relates to a kind of acoustic phased array wind measurement device and system, its device includes: shell and setting phased array acoustic wave emission array, multichannel echo receiving array, monitoring component and control host computer on shell;Shell includes support frame and is set on the horn-shaped shell of support frame;Phased array acoustic wave emission array is set in horn-shaped shell, including the multiple acoustic-electric transducer units of two-dimensional rectangular array arrangement;Multichannel echo receiving array is set in horn-shaped shell, including the microphone unit equal in number with acoustic-electric transducer unit and the same physical aperture layout is shared;Monitoring component is used to monitor environmental information and the attitude information of acoustic phased array wind measurement device;Control host computer is connected with phased array acoustic wave emission array, multichannel echo receiving array and monitoring component respectively.The device proposed in the utility model has the characteristics of compact structure, all-weather operation and mobile deployment, improves the precision of acoustic wind measurement and reduces operation and maintenance cost.

Description

Technical Field

[0001] This utility model relates to the field of meteorological monitoring technology, and in particular to an acoustic phased array wind measuring device and system. Background Technology

[0002] In fields such as meteorology, environmental protection, wind power, and building safety, accurate and real-time measurement of wind speed and direction within a height range of 10m to 300m is of significant practical value. With the diversification of application scenarios, such as wind turbine wake monitoring, urban street wind environment assessment, and ventilation analysis of large sports stadiums, higher requirements are being placed on the spatial resolution and device adaptability of wind field measurements.

[0003] Currently, traditional wind measurement methods mainly include wind measurement towers, lidar, and beam / tri-beam acoustic radar. However, wind measurement towers can only measure at a single point, have high construction costs, and cannot be relocated; lidar is greatly affected by rain, snow, and fog, and has obvious low-altitude blind spots; beam acoustic radar has a mechanically fixed beam direction, a limited scanning range, and its vertical resolution decreases rapidly with altitude, making it difficult to meet the requirements for full-area wind field inversion on the wind turbine rotor surface.

[0004] Therefore, those skilled in the art urgently need an acoustic phased array wind measurement device that is free from mechanical rotation scanning and adaptable to complex environments, in order to improve the measurement accuracy of the device and reduce operation and maintenance costs. Utility Model Content

[0005] (a) Technical problems to be solved

[0006] In view of the above-mentioned shortcomings and deficiencies of the prior art, the present invention provides an acoustic phased array wind measuring device and system, which solves the technical problems of low measurement accuracy and high operation and maintenance costs of existing wind measuring devices.

[0007] (II) Technical Solution

[0008] To achieve the above objectives, the main technical solutions adopted by this utility model include:

[0009] In a first aspect, this utility model provides an acoustic phased array wind measuring device, comprising: a housing and a phased array acoustic wave transmitting array, a multi-channel echo receiving array, a monitoring component, and a control host disposed on the housing;

[0010] The housing includes a support frame and a flared outer shell mounted on the support frame;

[0011] The phased array acoustic wave transmitting array is housed inside a horn-shaped housing and includes multiple acoustic-electric transducer units arranged in a two-dimensional rectangular array.

[0012] The multi-channel echo receiver array is housed in a horn-shaped housing and includes microphone units that are the same number as the acoustic transducer units and share the same physical aperture.

[0013] The monitoring components are used to monitor environmental information and the attitude information of the acoustic phased array anemometer.

[0014] The control host is connected to the phased array acoustic wave transmitting array, the multi-channel echo receiving array, and the monitoring components.

[0015] Optionally, the support frame includes: a fixed base, a sliding component, and a drive assembly;

[0016] One end of the fixed base is connected to the horn-shaped outer shell, and the other end is provided with a sliding cavity;

[0017] The sliding component is movably fitted into the sliding cavity and can move axially within the sliding cavity under the drive of the drive component.

[0018] Optionally, the phased array acoustic wave transmitting array also includes: a power amplifier and a frequency synthesizer;

[0019] The frequency synthesizer is connected to the control host;

[0020] The power amplifier is connected to the frequency synthesizer and the acoustic-electric transducer unit, respectively.

[0021] Optionally, the acoustic-electric transducer unit is a piezoelectric ceramic acoustic-electric transducer unit, and the number of piezoelectric ceramic acoustic-electric transducer units is configured as 64 in an 8×8 array layout, with a spacing of 38mm between adjacent piezoelectric ceramic acoustic-electric transducer units.

[0022] Optionally, the microphone unit is a MEMS microphone unit, and the number of MEMS microphone units is configured to be 64 in an 8×8 array layout. Each MEMS microphone unit is connected to the control host through a preset analog-to-digital converter.

[0023] Optionally, the monitoring components include: a temperature and humidity sensor, a barometric pressure sensor, a rainfall sensor, and a gyroscope;

[0024] The rain sensor is located on the top of the horn-shaped housing;

[0025] The temperature and humidity sensor, the air pressure sensor, and the gyroscope are all located at the bottom of the horn-shaped housing, with the gyroscope positioned horizontally.

[0026] Optionally, the control host includes: a controller and an embedded industrial computer;

[0027] The controller is connected to the phased array acoustic wave transmitting array, the multi-channel echo receiving array, and the monitoring components, respectively.

[0028] The embedded industrial computer is connected to the microcontroller. The embedded industrial computer is also equipped with a Modbus-TCP communication interface, a 4G communication interface, and a Beidou short message communication interface for communication and interaction with the user terminal.

[0029] Optionally, the controller is a heterogeneous controller equipped with an FPGA chip and a DSP chip;

[0030] The FPGA chip is connected to the phased array acoustic wave transmitting array and the monitoring components, respectively.

[0031] The DSP chip is connected to the multi-channel echo receiver array and the embedded industrial control computer, respectively.

[0032] Optionally, it also includes: a DC bus and solar power components;

[0033] The DC bus is used to connect the preset external power supply to the power supply terminal of the acoustic phased array wind measurement device to form the first power supply link;

[0034] The solar power supply component includes a solar panel, a charging management module, and a lithium battery. The solar panel is connected to the charging terminal of the lithium battery through the charging management module, and the discharging terminal of the lithium battery is connected to the power supply terminal of the acoustic phased array wind measuring device to form a second power supply link.

[0035] Secondly, embodiments of this utility model provide an acoustic phased array wind measurement system, comprising:

[0036] Monitoring center;

[0037] The mobile vehicle is equipped with the aforementioned acoustic phased array wind measurement device, which is connected to the monitoring center.

[0038] (III) Beneficial Effects

[0039] The beneficial effects of this utility model are: because this utility model uses a phased array acoustic wave transmitting array and a multi-channel echo receiving array of the same specifications, and the array adopts miniaturized acoustic-electric transducer units and microphone units, it can achieve device miniaturization while also realizing high-precision three-dimensional wind field data acquisition within a height range of 10m to 400m through electronic scanning acoustic beams.

[0040] Furthermore, this invention also employs monitoring components to monitor the local environment and the device's motion posture, ensuring the device's normal operation in all weather conditions and complex environments. Attached Figure Description

[0041] Figure 1 A schematic diagram of the structure of an acoustic phased array wind measuring device provided in an embodiment of this utility model;

[0042] Figure 2This is a schematic diagram of the internal component connections of an acoustic phased array wind measuring device provided in an embodiment of the present invention.

[0043] [Explanation of Labels in the Attached Image]

[0044] 1: Horn-shaped outer shell;

[0045] 2: Fixed base;

[0046] 3: Sliding components;

[0047] 4: Control host. Detailed Implementation

[0048] To better explain and facilitate understanding of this utility model, the present utility model will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0049] refer to Figure 1 and Figure 2 As shown in the figure, an acoustic phased array wind measuring device according to an embodiment of the present invention includes: a housing and a phased array acoustic wave transmitting array, a multi-channel echo receiving array, a monitoring component, and a control host 4 disposed on the housing; the housing includes a support frame and a horn-shaped outer shell 1 disposed on the support frame; the phased array acoustic wave transmitting array is disposed inside the horn-shaped outer shell 1 and includes multiple acoustic-electric transducer units arranged in a two-dimensional rectangular array; the multi-channel echo receiving array is disposed inside the horn-shaped outer shell 1 and includes microphone units of the same number as the acoustic-electric transducer units and sharing the same physical aperture; the monitoring component is used to monitor environmental information and the attitude information of the acoustic phased array wind measuring device; the control host 4 is connected to the phased array acoustic wave transmitting array, the multi-channel echo receiving array, and the monitoring component respectively.

[0050] This embodiment uses a phased array acoustic wave transmitting array and a multi-channel echo receiving array of the same specifications. The array uses miniaturized acoustic-electric transducer units and microphone units, which not only makes the device miniaturized but also enables high-precision three-dimensional wind field data acquisition within a height range of 10m to 400m through electronic scanning of the acoustic beam.

[0051] Furthermore, this embodiment also employs monitoring components to monitor the local environment and the device's motion posture, ensuring the device's normal operation in all weather conditions and complex environments.

[0052] To better understand the above technical solutions, exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present invention are shown in the drawings, it should be understood that the present invention can be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that the present invention can be understood more clearly and thoroughly, and that the scope of the present invention can be fully conveyed to those skilled in the art.

[0053] First, refer to Figure 1 As shown, the housing includes a support frame and a horn-shaped outer shell 1 mounted on the support frame. The support frame includes a fixed base 2, a sliding component 3, and a drive assembly; one end of the fixed base 2 is connected to the horn-shaped outer shell 1, and the other end is provided with a sliding cavity; the sliding component 3 is movably sleeved in the sliding cavity and can move axially within the sliding cavity under the drive of the drive assembly.

[0054] To further explain, the outer casing adopts a horn-shaped design (1), which allows the electronically scanned beam formed by the phased array acoustic wave transmitting array and the multi-channel echo receiving array configured within the casing to achieve a wide scanning azimuth and elevation angles. Simultaneously, it reduces the exposed area of ​​the array structure, further protecting it. The support frame employs a rope-operated structure, enabling the device to be adjusted to any height. For example, when the acoustic phased array anemometer is mounted on the trunk of a pickup truck for short-term, multi-positional wind measurement, the device can be lowered to its lowest position via the support frame as the vehicle moves, thus lowering its center of gravity and ensuring safety during movement. Once the designated wind measurement location is reached, the device can be raised via the support frame to prevent the vehicle's height or other obstructions from affecting the electronically scanned beam.

[0055] Next, the phased array acoustic wave transmitting array is housed within a horn-shaped housing 1, comprising multiple acoustic-electric transducer units arranged in a two-dimensional rectangular array, a power amplifier, and a frequency synthesizer. The frequency synthesizer is connected to the control host 4 and, upon receiving the phased array acoustic wave transmitting control command from the control host 4, outputs a digital signal carrying target azimuth and elevation information. The power amplifier is connected to both the frequency synthesizer and the acoustic-electric transducer units, amplifying the digital signal and outputting the amplified digital signal to the acoustic-electric transducer units, enabling the acoustic-electric transducer units to transmit electronically scanned acoustic beams in the target azimuth and elevation directions. The azimuth range is 0° to 360°, the elevation range is 10° to 90°, and the peak value of the electronically scanned acoustic beam is 120dB.

[0056] Furthermore, the acoustic-electric transducer unit is a piezoelectric ceramic acoustic-electric transducer unit with a center frequency of 4.0–5.0 kHz. The number of piezoelectric ceramic acoustic-electric transducer units is configured as 64 in an 8×8 array, with a spacing of 38 mm between adjacent units. This embodiment uses 64 piezoelectric ceramic acoustic-electric transducer units arranged in an 8×8 array to form a phased array acoustic wave transmitting array, and controls the spacing between adjacent units to 38 mm, which can further reduce the size of the acoustic phased array wind measurement device, achieving miniaturization and improving the portability of the device.

[0057] Secondly, the multi-channel echo receiving array is housed within the horn-shaped housing 1, including microphone units of the same number as the acoustic transducer units and sharing the same physical aperture. This embodiment employs the same layout scale for the transmitting and receiving arrays, achieving perfect symmetry and unity between transmission and reception at the physical and signal processing levels. This ensures that the acoustic phased array wind measurement device has a completely consistent response in space, greatly simplifying beamforming conditions. Simultaneously, the receiving array can most effectively receive the echo signal returned from the area illuminated by the transmitted beam, maximally suppressing noise and interference from other directions, thereby obtaining the optimal signal-to-noise ratio.

[0058] Furthermore, the microphone unit is a MEMS (Micro-Electro-Mechanical Systems) microphone unit, and the number of MEMS microphone units is configured as 64 in an 8×8 array layout. Each MEMS microphone unit is connected to the control host 4 through a preset analog-to-digital converter, and the receiving beam range of the MEMS microphone unit is 30dB to 120dB. The analog-to-digital converter is used to convert the sound echo signal received by the MEMS microphone unit into an analog signal and output it to the control host 4. At the same time, this embodiment uses 64 MEMS microphone units in an 8×8 array layout to form a multi-channel echo receiving array, which takes into account both device miniaturization and high portability.

[0059] Then, the control host 4 includes a controller and an embedded industrial computer. The controller is connected to the phased array acoustic wave transmitting array, the multi-channel echo receiving array, and the monitoring components, respectively. It is used to receive the monitoring information from the monitoring components and synchronously output the phased array acoustic wave transmitting control command to the phased array acoustic wave transmitting array, and to receive the acoustic echo signal from the multi-channel echo receiving array and synchronously output the three-dimensional wind field data. The embedded industrial computer is connected to the controller and is used to output the wind measurement data to the client after receiving the three-dimensional wind field data. The embedded industrial computer is also equipped with a Modbus-TCP communication interface, a 4G communication interface, and a Beidou short message communication interface for communication with the user terminal.

[0060] Furthermore, the controller is a heterogeneous controller equipped with an FPGA chip and a DSP chip. The FPGA chip is connected to the phased array acoustic wave transmitting array and the monitoring component, respectively, and is used to receive the monitoring information from the monitoring component and synchronously output the phased array acoustic wave transmitting control command to the phased array acoustic wave transmitting array; the DSP chip is connected to the multi-channel echo receiving array and the embedded industrial control computer, respectively, and is used to receive the acoustic echo signal from the multi-channel echo receiving array and synchronously output the three-dimensional wind field data to the embedded industrial control computer.

[0061] Next, the monitoring components include: a temperature and humidity sensor, a barometric pressure sensor, a rainfall sensor, and a gyroscope. The rainfall sensor is located at the top of the horn-shaped housing 1 and connected to the FPGA chip, used to send real-time collected rainfall information from the environment to the FPGA chip; the temperature and humidity sensor is located at the bottom of the horn-shaped housing 1 and connected to the FPGA chip, used to send real-time collected temperature and relative humidity information from the environment to the FPGA chip; the barometric pressure sensor is located at the bottom of the horn-shaped housing 1 and connected to the FPGA chip, used to send real-time collected barometric pressure information from the environment to the FPGA chip; the gyroscope is horizontally located at the bottom of the horn-shaped housing 1 and connected to both the FPGA chip and the drive assembly, used to send real-time collected attitude information of the device to both the FPGA chip and the drive assembly.

[0062] Finally, the acoustic phased array wind measurement device also includes a DC bus and a solar power supply assembly. The DC bus is used to connect a preset external power source to the power supply terminal of the acoustic phased array wind measurement device to form a first power supply link. The solar power supply assembly includes a solar panel, a charging management module, and a lithium battery. The solar panel is connected to the charging terminal of the lithium battery through the charging management module, and the discharging terminal of the lithium battery is connected to the power supply terminal of the acoustic phased array wind measurement device to form a second power supply link.

[0063] In addition, this embodiment also discloses an acoustic phased array wind measurement system, including: a monitoring center; a mobile vehicle equipped with the aforementioned acoustic phased array wind measurement device, wherein the acoustic phased array wind measurement device is communicatively connected to the monitoring center.

[0064] In summary, this embodiment proposes an acoustic phased array wind measurement device and system. The device's housing consists of a support frame and a horn-shaped outer shell 1. The support frame has a liftable structure, facilitating lowering the center of gravity during transportation and raising the height during measurement to avoid obstructions. The device's transmitting array comprises 64 piezoelectric ceramic acousto-electric transducer units arranged in an 8×8 rectangle, while the receiving array uses 64 MEMS microphone units with the same layout. This achieves a physical common aperture design for both transmission and reception, which is beneficial for beamforming and improving the signal-to-noise ratio. This enables the acquisition of high-precision three-dimensional wind field data via electronically scanned acoustic beams within a height range of 10m to 400m. The device's monitoring components integrate temperature, humidity, air pressure, and rainfall sensors, as well as a gyroscope, for real-time sensing of environmental and attitude data. The controller of the control host 4 adopts a heterogeneous architecture combining FPGA and DSP, achieving isolation between the transmitting and receiving array data and reducing beam signal interference. Furthermore, the device employs a dual power supply mode, further improving the fault tolerance of the device's power supply.

[0065] Those skilled in the art will understand that embodiments of this invention can be provided as methods, systems, or computer program products. Therefore, this invention can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, this invention can take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0066] This invention is described with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of this invention. It will be understood that each block of the flowchart illustrations and / or block diagrams, as well as combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions.

[0067] It should be noted that in the description of this utility model, the word "a" or "an" preceding a component does not exclude the existence of multiple such components. This utility model can be implemented by means of hardware comprising several different components and by means of a suitably programmed computer. The use of terms such as first, second, third, etc., is merely for convenience of expression and does not indicate any order. These terms can be understood as part of the component names.

[0068] Furthermore, it should be noted that in the description of this specification, the terms "one embodiment," "some embodiments," "embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in any suitable manner in one or more embodiments or examples. Furthermore, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0069] Although preferred embodiments of the present invention have been described, those skilled in the art, upon learning of the basic inventive concept, can make other changes and modifications to these embodiments.

[0070] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope.

Claims

1. An acoustic phased array wind measuring device, characterized in that, Includes: a housing and a phased array acoustic wave transmitting array, a multi-channel echo receiving array, monitoring components, and a control host mounted on the housing; The housing includes a support frame and a flared outer shell mounted on the support frame; The support frame includes: a fixed base, a sliding component, and a drive assembly. One end of the fixed base is connected to the flared outer shell, and the other end is provided with a sliding cavity. The sliding component is movably sleeved in the sliding cavity and can move axially within the sliding cavity under the drive of the drive assembly. The phased array acoustic wave transmitting array is housed inside a horn-shaped housing and includes multiple acoustic-electric transducer units arranged in a two-dimensional rectangular array. The multi-channel echo receiver array is housed in a horn-shaped housing and includes microphone units that are the same number as the acoustic transducer units and share the same physical aperture. The monitoring components are used to monitor environmental information and the attitude information of the acoustic phased array anemometer. The control host is connected to the phased array acoustic wave transmitting array, the multi-channel echo receiving array, and the monitoring components.

2. The acoustic phased array wind measuring device as described in claim 1, characterized in that, The phased array acoustic wave transmitting array also includes: a power amplifier and a frequency synthesizer; The frequency synthesizer is connected to the control host; The power amplifier is connected to the frequency synthesizer and the acoustic-electric transducer unit, respectively.

3. The acoustic phased array wind measuring device as described in claim 1, characterized in that, The acoustic-electric transducer unit is a piezoelectric ceramic acoustic-electric transducer unit. The number of piezoelectric ceramic acoustic-electric transducer units is configured as 64 in an 8×8 array layout, and the spacing between adjacent piezoelectric ceramic acoustic-electric transducer units is 38mm.

4. The acoustic phased array wind measuring device as described in claim 1, characterized in that, The microphone unit is a MEMS microphone unit, and the number of MEMS microphone units is configured as 64 in an 8×8 array layout. Each MEMS microphone unit is connected to the control host through a preset analog-to-digital converter.

5. The acoustic phased array wind measuring device as described in claim 1, characterized in that, The monitoring components include: temperature and humidity sensors, barometric pressure sensors, rainfall sensors, and gyroscopes; The rain sensor is located on the top of the horn-shaped housing; The temperature and humidity sensor, the air pressure sensor, and the gyroscope are all located at the bottom of the horn-shaped housing, with the gyroscope positioned horizontally.

6. The acoustic phased array wind measuring device as described in claim 1, characterized in that, The control host includes: a controller and an embedded industrial computer; The controller is connected to the phased array acoustic wave transmitting array, the multi-channel echo receiving array, and the monitoring components, respectively. The embedded industrial computer is connected to the microcontroller. The embedded industrial computer is also equipped with a Modbus-TCP communication interface, a 4G communication interface, and a Beidou short message communication interface for communication and interaction with the user terminal.

7. The acoustic phased array wind measuring device as described in claim 6, characterized in that, The controller is a heterogeneous controller equipped with an FPGA chip and a DSP chip; The FPGA chip is connected to the phased array acoustic wave transmitting array and the monitoring components, respectively. The DSP chip is connected to the multi-channel echo receiver array and the embedded industrial control computer, respectively.

8. The acoustic phased array wind measuring device as described in claim 1, characterized in that, include: DC bus and solar power supply components; The DC bus is used to connect the preset external power supply to the power supply terminal of the acoustic phased array wind measurement device to form the first power supply link; The solar power supply component includes a solar panel, a charging management module, and a lithium battery. The solar panel is connected to the charging terminal of the lithium battery through the charging management module, and the discharging terminal of the lithium battery is connected to the power supply terminal of the acoustic phased array wind measuring device to form a second power supply link.

9. An acoustic phased array wind measurement system, characterized in that, include: Monitoring center; A mobile vehicle equipped with an acoustic phased array wind measurement device as described in any one of claims 1-8, wherein the acoustic phased array wind measurement device is communicatively connected to a monitoring center.

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