Wind driven generator operation monitoring equipment and wind power generation equipment

Abstract

The utility model discloses wind driven generator operation monitoring equipment and wind power generation equipment, and relates to the technical field of audio. The wind power generation equipment comprises a plurality of blades and a hub fixedly connected with one ends of the blades. The wind driven generator operation monitoring equipment comprises a plurality of audio collection assemblies, a plurality of audio output assemblies and a plurality of audio output assemblies, wherein the audio collection assemblies are arranged in one-to-one correspondence with the ends, close to a hub, of a plurality of paddles; the audio acquisition assembly is used for acquiring sound waves generated by the corresponding blades due to internal gas pressure change and voiceprints generated by external extrusion deformation, and outputting corresponding sound wave acquisition signals and voiceprint acquisition signals; the input end of the audio processing assembly is electrically connected with the output ends of the audio acquisition assemblies, the output end of the audio processing assembly is in communication connection with the upper computer, and the audio processing assembly is used for analog-to-digital conversion of the sound wave acquisition signals and the voiceprint acquisition signals; the audio processing assembly comprises a USB audio chip. The utility model aims to simplify the signal processing process of the wind driven generator operation monitoring equipment in the wind power generation equipment.

Description

TECHNICAL FIELD

[0001] The utility model relates to audio acquisition technical field, especially wind driven generator operation monitoring equipment and wind driven generator equipment. BACKGROUND

[0002] Modern wind driven generator equipment is usually installed in open land, and the operation environment challenge faced by its paddle also increasingly highlights. Among them, lightning carbonization and natural erosion cracking are two key problems that the current wind power industry generally concerns. It is difficult to find in real time through traditional manual detection or video detection, and the blade fault feature can be effectively detected in real time through voiceprint analysis. It can be understood that the wind driven generator equipment is generally composed of three paddles. Therefore, multiple corresponding audio sensors need to be set for multiple paddles, which leads to the fact that multiple audio signals output by multiple audio sensors need to use integrated multi-channel A / D chips to complete acquisition, and the A / D chip interface timing is controlled by a DSP chip or an ARM processor, which has high hardware requirements, complex programming, and cannot monitor the sensor working state. SUMMARY

[0003] The main purpose of the utility model is to provide a kind of wind driven generator operation monitoring equipment and wind driven generator equipment, to simplify the signal processing process of wind driven generator operation monitoring equipment in wind driven generator equipment.

[0004] To achieve the above purpose, the wind driven generator operation monitoring equipment provided by the utility model is applied to wind driven generator equipment, and the wind driven generator equipment includes multiple paddles and a hub fixedly connected to one end of the multiple paddles.

[0005] Multiple audio acquisition components are respectively and one-to-one correspondingly arranged with one end of the multiple paddles close to the hub. The audio acquisition component is used to collect the sound wave generated by the corresponding paddle due to internal gas pressure change and the voiceprint generated by the corresponding paddle due to external extrusion deformation, and output corresponding sound wave acquisition signals and voiceprint acquisition signals.

[0006] An audio processing component is electrically connected to the output end of the multiple audio acquisition components, and the output end of the audio processing component is in communication connection with an upper computer. The audio processing component is used for analog-to-digital conversion of the sound wave acquisition signals and the voiceprint acquisition signals.

[0007] The audio processing component includes a USB audio chip.

[0008] In an embodiment, the audio acquisition component includes:

[0009] An acoustic wave collection component is arranged at one end of the corresponding blade close to the hub; an output end of the acoustic wave collection component is electrically connected to an input end of the audio processing component; the acoustic wave collection component is used to collect acoustic waves generated by the corresponding blade due to internal gas pressure changes and output corresponding acoustic wave signals.

[0010] A voiceprint collection component is arranged at one end of the corresponding blade close to the hub; an output end of the voiceprint collection component is electrically connected to an input end of the audio processing component; the voiceprint collection component is used to collect voiceprints generated by the corresponding blade due to external extrusion deformation and output corresponding voiceprint signals.

[0011] In an embodiment, the wind turbine operation monitoring device further comprises a power supply component, an input end of the power supply component is electrically connected to an external power supply end, and output ends of the power supply component are respectively electrically connected to power supply ends of a plurality of audio collection components and a power supply end of the audio processing component; the power supply component is used to supply power to power-consuming units in the wind turbine operation monitoring device.

[0012] In an embodiment, the power supply component comprises:

[0013] A first voltage conversion circuit, an input end of the first voltage conversion circuit is electrically connected to the external power supply end, and an output end of the first voltage conversion circuit is electrically connected to a first power supply end of the audio processing component; the first voltage conversion circuit is used to convert a first voltage input by the external power supply end into a second voltage and output the second voltage;

[0014] A second voltage conversion circuit, an input end of the second voltage conversion circuit is electrically connected to the external power supply end, and an output end of the second voltage conversion circuit is electrically connected to a second power supply end of the audio processing component; the second voltage conversion circuit is used to convert the first voltage input by the external power supply end into a third voltage and output the third voltage;

[0015] A third voltage conversion circuit, an input end of the third voltage conversion circuit is electrically connected to an output end of the second voltage conversion circuit, and an output end of the third voltage conversion circuit is electrically connected to a third power supply end of the audio processing component; the third voltage conversion circuit is used to convert the third voltage input by the second voltage conversion circuit into a fourth voltage and output the fourth voltage.

[0016] In an embodiment, the first voltage conversion circuit comprises a first voltage conversion chip, a first capacitor, a second capacitor, and a third capacitor; the second voltage conversion circuit comprises a second voltage conversion chip, a first resistor, a fourth capacitor, a fifth capacitor, and a sixth capacitor; and the third voltage conversion circuit comprises a third voltage conversion chip, a seventh capacitor, and an eighth capacitor.

[0017] The first end of the first capacitor is electrically connected with the external power supply end, the first end of the first voltage conversion chip, and the first end of the first resistor, and the second end of the first capacitor is electrically connected with the second end of the first voltage conversion chip, the second end of the second capacitor, the second end of the third capacitor, the second end of the fourth capacitor, and a ground end; the first end of the second capacitor is electrically connected with the third end of the first voltage conversion chip, the first end of the third capacitor, and the first power supply end of the audio processing component; the second end of the first resistor is electrically connected with the first end of the fourth capacitor and the first end of the second voltage conversion chip; the second end of the fourth capacitor is electrically connected with the second end of the second voltage conversion chip, the second end of the fifth capacitor, the second end of the sixth capacitor, the second end of the third voltage conversion chip, the second end of the seventh capacitor, the second end of the eighth capacitor, and a ground end; the third end of the second voltage conversion chip is electrically connected with the first end of the fifth capacitor, the first end of the sixth capacitor, the second power supply end of the audio processing component, and the first end of the third voltage conversion chip; the second end of the third voltage conversion chip is electrically connected with the second end of the seventh capacitor and the second end of the eighth capacitor; and the third end of the third voltage conversion chip is electrically connected with the first end of the seventh capacitor, the first end of the eighth capacitor, and the third power supply end of the audio processing component.

[0018] In an embodiment, the wind turbine operation monitoring device further comprises a master control circuit; and the audio acquisition component further comprises:

[0019] a first switch circuit, a first end of the first switch circuit being electrically connected with an output end of the power supply component, a second end of the first switch circuit being electrically connected with a power supply end of the sound wave acquisition component, and a controlled end of the first switch circuit being electrically connected with the master control circuit; the first switch circuit is used for receiving a first switch control signal to turn on or turn off a passage between the output end of the power supply component and the power supply end of the sound wave acquisition component;

[0020] a second switch circuit, a first end of the second switch circuit being electrically connected with the output end of the power supply component, a second end of the second switch circuit being electrically connected with a power supply end of the voiceprint acquisition component, and a controlled end of the second switch circuit being electrically connected with the master control circuit; the second switch circuit is used for receiving a second switch control signal to turn on or turn off a passage between the output end of the power supply component and the power supply end of the voiceprint acquisition component.

[0021] In an embodiment, the wind turbine operation monitoring device further comprises:

[0022] A plurality of current detection circuits, the input ends of the plurality of current detection circuits are respectively and correspondingly connected with the power supply ends of the plurality of audio acquisition components, and the output ends of the plurality of current detection circuits are connected with the main control circuit; the current detection circuit is used for detecting the input current of the power supply end of the audio acquisition component and outputting a corresponding current detection signal;

[0023] The main control circuit is used for receiving the current detection signal and outputting a corresponding switch control signal; the switch control signal comprises a first switch control signal and a second switch control signal.

[0024] In an embodiment, the wind power generator operation monitoring device further comprises a plurality of signal amplification circuits, the plurality of signal amplification circuits are respectively and correspondingly connected with the plurality of current detection circuits; the input ends of the signal amplification circuits are connected with the output ends of the current detection circuits, and the output ends of the signal amplification circuits are connected with the main control circuit; the signal amplification circuit is used for amplifying the current detection signal.

[0025] In an embodiment, the wind power generator operation monitoring device further comprises a USB interface, the first end of the USB interface is connected with the output end of the audio processing component, and the second end of the USB interface is used for connecting a communication line to communicate with the host computer.

[0026] The utility model discloses further propose a kind of wind power generation equipment, the wind power generation equipment includes multiple paddles and with multiple the hub fixedly connected with the one end of the paddle, host computer and the wind power generator operation monitoring device as any one described above.

[0027] The utility model technical scheme can effectively simplify the signal processing of the wind power generator operation monitoring device in the wind power generation equipment by using a kind of wind power generator operation monitoring device. The wind power generator operation monitoring device includes a plurality of audio acquisition components and an audio processing component. By setting the plurality of audio acquisition components respectively and correspondingly with the one end of the plurality of paddles close to the hub, the sound waves generated by the corresponding paddle due to internal gas pressure changes and the voiceprint generated by external extrusion deformation are collected, and the corresponding sound wave acquisition signal and voiceprint acquisition signal are output. By connecting the input end of the audio processing component with the output end of the plurality of audio acquisition components respectively and correspondingly, and connecting the output end of the audio processing component with the host computer, the analog-digital conversion output of the sound wave acquisition signal and the voiceprint acquisition signal to the host computer is realized, and then the host computer confirms the working state of the paddle in the wind power generation equipment through the sound wave acquisition signal and the voiceprint acquisition signal. It should be noted that the audio processing component includes a USB audio chip, so that the mature technology and operating system are used to convert the complex hardware and driver development problem into simple host computer software configuration, effectively reducing the complexity of the audio signal conversion output. BRIEF DESCRIPTION OF DRAWINGS

[0028] In order to more clearly illustrate the technical solutions of the embodiments of the present application or the prior art, the drawings needed in the following embodiment or prior art description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained according to the structures shown in the drawings without creative labor for those skilled in the art.

[0029] Figure 1 It is a module schematic diagram of the wind driven generator operation monitoring equipment of the present application.

[0030] Figure 2 It is a module schematic diagram of an embodiment of the wind driven generator operation monitoring equipment of the present application.

[0031] Figure 3 It is a circuit schematic diagram of an embodiment of the wind driven generator operation monitoring equipment of the present application.

[0032] Figure 4 It is a circuit schematic diagram of another embodiment of the wind driven generator operation monitoring equipment of the present application.

[0033] Figure 5 It is a circuit schematic diagram of an embodiment of the audio acquisition assembly in the wind driven generator operation monitoring equipment of the present application.

[0034] Figure 6 It is a circuit schematic diagram of another embodiment of the audio acquisition assembly in the wind driven generator operation monitoring equipment of the present application.

[0035] Figure 7 It is a circuit schematic diagram of still another embodiment of the wind driven generator operation monitoring equipment of the present application.

[0036] EXPLANATION OF DRAWINGS:

[0037] 10, audio acquisition assembly; 11, sound wave acquisition assembly; 12, voiceprint acquisition assembly; 20, audio processing assembly; 30, main control circuit; 40, power supply assembly; 50, first switch circuit; 60, second switch circuit; 70, current detection circuit; R1, first resistor; C1, first capacitor; C2, second capacitor; C3, third capacitor; C4, fourth capacitor; C5, fifth capacitor; C6, sixth capacitor; C7, seventh capacitor; C8, eighth capacitor; U1, first voltage conversion chip; U2, second voltage conversion chip; U3, third voltage conversion chip.

[0038] The realization, functional features and advantages of the present application will be further described with reference to the embodiments and the drawings. DETAILED DESCRIPTION

[0039] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0040] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present application are only used to explain the relative positional relationship, movement condition, etc. between components in a certain posture (as shown in the drawings), and if the certain posture changes, the directional indications also change accordingly.

[0041] In addition, the description of "first", "second" and the like in the present application is only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can explicitly or implicitly include at least one of the features. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the fact that a person skilled in the art can realize it, and when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, and is not within the scope of protection required by the present application.

[0042] Modern wind power generation equipment is usually installed in open areas, and the operating environment challenges faced by the blades are increasingly prominent. Among them, lightning carbonization and natural erosion cracking are two key problems that the current wind power industry generally concerns. It is difficult to find in real time through traditional manual detection or video detection, but through voiceprint analysis, blade failure features can be detected in real time and effectively. It can be understood that a wind power generation equipment generally consists of three blades. Therefore, multiple corresponding audio sensors need to be set for multiple blades, which leads to the fact that multiple audio signals output by multiple audio sensors need to use integrated multi-channel A / D chips to complete acquisition, and the timing sequence of the A / D chip interface is controlled by a DSP chip or an ARM processor, which has high requirements for hardware, complex programming, and cannot monitor the working state of the sensor.

[0043] To solve the above problems, with reference to Figures 1 to 3 The utility model provides a wind driven generator operation monitoring equipment, be applied to wind driven generator, wind driven generator includes a plurality of blades and with a plurality of the blade one end fixed connection's hub, wind driven generator operation monitoring equipment includes:

[0044] A plurality of audio acquisition components 10, a plurality of said audio acquisition components 10 are respectively arranged in one-to-one correspondence with a plurality of said blades near one end of the hub; the audio acquisition component 10 is used to collect the sound waves generated by the corresponding blade due to the change of the internal gas pressure and the voiceprint generated by the external extrusion deformation, and output the corresponding sound wave acquisition signal and voiceprint acquisition signal;

[0045] An audio processing component 20, the input end of the audio processing component 20 is electrically connected with the output end of a plurality of said audio acquisition components 10 respectively, and the output end of the audio processing component 20 is in communication connection with the upper computer; the audio processing component 20 is used for analog-to-digital conversion of the sound wave acquisition signal and the voiceprint acquisition signal.

[0046] Among them, the audio processing component 20 includes a USB audio chip.

[0047] In this embodiment, the audio acquisition component 10 can be realized by using a pickup sensor, a microphone array and the like. It should be noted that because the object to be collected by the audio acquisition component 10 is the blade of the wind power generation equipment. Therefore, the audio acquisition component 10 needs to be arranged in the area near the hub of the blade of the wind power generation equipment, so as to confirm the use state of the blade on the wind power generation equipment by collecting the audio signal generated by the blade, so as to take corresponding measures to deal with in time in the case that the blade has safety hidden danger. For example, when the number of blades of the wind power generation equipment is three, the audio acquisition component 10 can correspondingly adopt three groups, and is respectively arranged at one end near the hub of the three groups of blades, so as to realize the acquisition of the audio signal generated by the blade. Further, the audio signal generated by the blade collected by the audio acquisition component 10 is the sound wave generated by the blade due to the change of the internal gas pressure and the voiceprint generated by the external extrusion deformation, and the corresponding sound wave acquisition signal and voiceprint acquisition signal are output.

[0048] Optionally, the audio acquisition component 10 includes:

[0049] The sound wave acquisition component 11 is arranged at one end near the hub corresponding to the blade; the output end of the sound wave acquisition component 11 is electrically connected with the input end of the audio processing component 20; the sound wave acquisition component 11 is used to collect the sound wave generated by the corresponding blade due to the change of the internal gas pressure, and output the corresponding sound wave signal;

[0050] The voiceprint acquisition component 12 is arranged at one end near the hub corresponding to the blade; the output end of the voiceprint acquisition component 12 is electrically connected with the input end of the audio processing component 20; the voiceprint acquisition component 12 is used to collect the voiceprint generated by the corresponding blade due to the external extrusion deformation, and output the corresponding voiceprint signal.

[0051] It can be understood that in a wind power generation device, large blades are usually designed as hollow structures to reduce weight, which provides a channel for sound wave propagation. By installing a sound source, such as a loudspeaker, a piezoelectric exciter, etc., inside or at the root of the blade, emitting sound waves of a specific frequency, detecting its propagation, reflection and resonance characteristics in the cavity. By listening to the spontaneous sound generated inside the blade during operation, such as vortex noise, friction sound, etc., caused by air flow, structural vibration, etc., the stratification, water accumulation, foreign matter, structural deformation, etc. in the cavity can be detected, and then the acoustic signal output by the sound wave acquisition assembly 11 is analyzed to determine whether the overall structural stiffness has decreased. The blades of the wind power generation device change their acoustic characteristics (acoustic impedance, sound speed, attenuation coefficient, modal response, etc.) during operation due to any abnormalities in their internal structure, such as lightning carbonization, stratification, cracking, corrosion, loose bolts, etc. These changes will be reflected in the propagation path of the sound wave, the frequency component of the sound wave, the arrival time and energy attenuation of the sound wave. Therefore, by analyzing the acoustic fingerprint signal, the damage inside the blade can be inferred.

[0052] In this embodiment, the sound wave acquisition assembly 11 and the acoustic fingerprint acquisition assembly 12 essentially use the same type of sensor and hardware system, so their physical installation positions on the blade are both at the end of the corresponding blade close to the hub. The difference between the sound wave signal and the acoustic fingerprint signal mainly lies in the processing method after data acquisition. If the original time-domain waveform is stored and analyzed physically, it is a sound wave signal, and if the same data is subjected to FFT, wavelet transform, MFCC or energy feature extraction, it is an acoustic fingerprint signal.

[0053] In the embodiment, the audio processing component 20 can be implemented by using an audio processing circuit of a USB audio chip architecture. It can be understood that, compared with a conventional dedicated A / D sampling structure (usually based on a microcontroller MCU or FPGA and an external ADC), the use of the USB audio chip has significant advantages, especially in terms of rapid prototyping, system integration, and user interaction flexibility. The conventional A / D sampling structure requires the development of underlying firmware, involving driver development, interrupt processing, DMA transmission, data packaging, etc., and has a long development cycle. In addition, the hardware and software problem troubleshooting is complex. Once the firmware is burned, modification of parameters such as sampling rate and precision usually requires reprogramming, and on-site adjustment is inconvenient. If parameter configuration and data display are required, PC-side software also needs to be developed. The USB audio chip complies with the standard USB Audio Class protocol, and when connected to a PC, the operating system automatically recognizes it as an audio input device, without the need to write any driver or firmware. Users can easily adjust it through the sound setting panel of the operating system or professional audio software, thereby converting the complex hardware and driver development problem into simple host computer software configuration. By using the USB audio signal architecture, the audio processing component 20 can be flexibly adjusted by the host computer in terms of audio sampling rate, sampling precision, output file format, volume size, etc. Figure 3 The specific circuit of the USB audio chip.

[0054] The wind turbine operation monitoring equipment can effectively simplify the signal processing of the wind turbine operation monitoring equipment in the wind power generation equipment. The wind turbine operation monitoring equipment includes a plurality of audio acquisition components 10 and an audio processing component 20. By setting the plurality of audio acquisition components 10 one by one corresponding to the plurality of blades close to one end of the hub, the sound waves generated by the corresponding blades due to the change of internal gas pressure and the voiceprints generated by the external extrusion deformation are collected, and the corresponding sound wave acquisition signals and voiceprint acquisition signals are output. The input end of the audio processing component 20 is electrically connected to the output end of the plurality of audio acquisition components 10, and the output end of the audio processing component 20 is communicatively connected to the host computer, so as to realize the analog-to-digital conversion output of the sound wave acquisition signal and the voiceprint acquisition signal to the host computer, and then the host computer confirms the working state of the blades in the wind power generation equipment through the sound wave acquisition signal and the voiceprint acquisition signal. It should be noted that the audio processing component 20 includes a USB audio chip, so as to utilize mature technology and operating system, convert the complex hardware and driver development problem into simple host computer software configuration, and effectively reduce the complexity of the audio signal conversion output.

[0055] Reference Figure 2 And Figure 4In an embodiment of the utility model, the wind driven generator operation monitoring equipment still includes power supply component 40, the input of power supply component 40 is electrically connected with external power source end, the output of power supply component 40 is electrically connected with the power source end of multiple audio acquisition component 10, the power source end of audio processing component 20 respectively, power supply component 40 is used to power the power unit in wind driven generator operation monitoring equipment.

[0056] In the embodiment, wind driven generator operation monitoring equipment still is provided with power supply component 40, to realize the power supply of the power unit in wind driven generator operation monitoring equipment, and then make audio acquisition component 10 and audio processing component 20 work etc., wherein, it needs to note that the power supply voltage required by the power unit in wind driven generator operation monitoring equipment is not same. Therefore, power supply component 40 needs to convert the voltage inputted by external power source end into multiple corresponding voltages and output, to make the power unit in wind driven generator operation monitoring equipment can all obtain corresponding power supply voltage and work.

[0057] Optionally, power supply component 40 includes:

[0058] First voltage conversion circuit, the input of first voltage conversion circuit is electrically connected with the external power source end, and the output of first voltage conversion circuit is electrically connected with the first power source end of audio processing component 20, first voltage conversion circuit is used to convert the first voltage inputted by external power source end into second voltage and output;

[0059] Second voltage conversion circuit, the input of second voltage conversion circuit is electrically connected with the external power source end, and the output of second voltage conversion circuit is electrically connected with the second power source end of audio processing component 20, second voltage conversion circuit is used to convert the first voltage inputted by external power source end into third voltage and output;

[0060] Third voltage conversion circuit, the input of third voltage conversion circuit is electrically connected with the output of second voltage conversion circuit, and the output of third voltage conversion circuit is electrically connected with the third power source end of audio processing component 20, third voltage conversion circuit is used to convert the third voltage inputted by second voltage conversion circuit into fourth voltage and output.

[0061] In the embodiment, the first voltage conversion circuit, the second voltage conversion circuit, and the third voltage conversion circuit can select corresponding voltage conversion circuits, such as rectifier circuits, inverter circuits, boost circuits, and buck circuits, according to the first voltage, the second voltage, the third voltage, and the fourth voltage. Specifically, the first voltage conversion circuit includes a first voltage conversion chip U1, a first capacitor C1, a second capacitor C2, and a third capacitor C3; the second voltage conversion circuit includes a second voltage conversion chip U2, a first resistor R1, a fourth capacitor C4, a fifth capacitor C5, and a sixth capacitor C6; and the third voltage conversion circuit includes a third voltage conversion chip U3, a seventh capacitor C7, and an eighth capacitor C8.

[0062] The first end of the first capacitor C1 is electrically connected to the external power supply end, the first end of the first voltage conversion chip U1, and the first end of the first resistor R1, and the second end of the first capacitor C1 is electrically connected to the second end of the first voltage conversion chip U1, the second end of the second capacitor C2, the second end of the third capacitor C3, and the ground end; the first end of the second capacitor C2 is electrically connected to the third end of the first voltage conversion chip U1, the first end of the third capacitor C3, and the first power supply end of the audio processing assembly 20; the second end of the first resistor R1 is electrically connected to the first end of the fourth capacitor C4 and the first end of the second voltage conversion chip U2; the second end of the fourth capacitor C4 is electrically connected to the second end of the second voltage conversion chip U2, the second end of the fifth capacitor C5, the second end of the sixth capacitor C6, the second end of the third voltage conversion chip U3, the second end of the seventh capacitor C7, the second end of the eighth capacitor C8, and the ground end; the third end of the second voltage conversion chip U2 is electrically connected to the first end of the fifth capacitor C5, the first end of the sixth capacitor C6, the second power supply end of the audio processing assembly 20, and the first end of the third voltage conversion chip U3; the second end of the third voltage conversion chip U3 is electrically connected to the second end of the seventh capacitor C7, the second end of the eighth capacitor C8, and the ground end; and the third end of the third voltage conversion chip U3 is electrically connected to the first end of the seventh capacitor C7, the first end of the eighth capacitor C8, and the third power supply end of the audio processing assembly 20.

[0063] It can be understood that the first voltage conversion chip U1, the second voltage conversion chip U2 and the third voltage conversion chip U3 are all step-down chips. For example, the first voltage input by the external input end is 15V, and the second voltage output after the first voltage conversion chip U1 is 12V; the first voltage input by the external input end is 15V, and the third voltage output after the second voltage conversion chip U2 is 5V; and the fourth voltage output after the third voltage output by the second voltage conversion circuit passes through the third voltage conversion chip U3 is 3.3V. By setting multiple voltage conversion circuits, the first voltage input by the external power supply end can be converted into multiple corresponding voltages to meet the needs of multiple power supply ends of the audio processing assembly 20.

[0064] Reference Figure 2 , Figure 5 and Figure 6 In an embodiment of the utility model, the wind driven generator operation monitoring equipment further includes a main control circuit 30; the audio acquisition assembly 10 further includes:

[0065] A first switch circuit 50, the first end of the first switch circuit 50 is electrically connected with the output end of the power supply assembly 40, the second end of the first switch circuit 50 is electrically connected with the power supply end of the sound wave acquisition assembly 11, and the controlled end of the first switch circuit 50 is electrically connected with the main control circuit 30;The first switch circuit 50 is used to receive a first switch control signal, and turns on or turns off the passageway between the output end of the power supply assembly 40 and the power supply end of the sound wave acquisition assembly 11.

[0066] A second switch circuit 60, the first end of the second switch circuit 60 is electrically connected with the output end of the power supply assembly 40, the second end of the second switch circuit 60 is electrically connected with the power supply end of the voiceprint acquisition assembly 12, and the controlled end of the second switch circuit 60 is electrically connected with the main control circuit 30;The second switch circuit 60 is used to receive a second switch control signal, and turns on or turns off the passageway between the output end of the power supply assembly 40 and the power supply end of the voiceprint acquisition assembly 12.

[0067] In the embodiment, the main control circuit 30 can be implemented by a main controller, such as an MCU (Microcontroller Unit), a DSP (Digital Signal Process), an FPGA (Field Programmable Gate Array), an SOC (System On Chip), etc. The first switch circuit 50 and the second switch circuit 60 can each be implemented by at least one switch tube, such as a MOS tube, an IGBT tube, a thyristor, a transistor, a power tube, etc. The circuit structures of the first switch circuit and the second switch circuit are the same, and can be referred to the switch tube Q1 in and the switch tube Q2 in Figure 5 Figure 6 The controlled end of the first switch circuit 50 is SW1, and the controlled end of the second switch circuit 60 is SW2 (not shown in the main control circuit figure). It can be understood that by setting the corresponding switch circuits between the power supply end of the sound wave collection assembly 11 and the output end of the power supply assembly 40, the path between the output end of the power supply assembly 40 and the power supply end of the sound wave collection assembly 11 can be disconnected in time when the power supply assembly 40 supplies power abnormally, so as to avoid the influence of overcurrent, short circuit and other faults on the sound wave collection assembly 11. When the first switch circuit 50 or the second switch circuit 60 is disconnected, the sound wave collection assembly 11 or the voiceprint collection assembly 12 cannot output the corresponding sound wave collection signal or the corresponding voiceprint collection signal.

[0068] Optionally, the wind power generator operation monitoring device further comprises:

[0069] a plurality of current detection circuits 70, the input ends of the plurality of current detection circuits 70 are respectively and correspondingly connected with the power supply ends of the plurality of audio collection assemblies 10, and the output ends of the plurality of current detection circuits 70 are connected with the main control circuit 30; the current detection circuit 70 is used for detecting the input current of the power supply end of the audio collection assembly 10 and outputting a corresponding current detection signal;

[0070] The main control circuit 30 is used for receiving the current detection signal and outputting a corresponding switch control signal; the switch control signal includes a first switch control signal and a second switch control signal.

[0071] ​In the embodiment, the current detection circuit 70 can be implemented by a resistance sampling circuit, a current transformer, a Hall sensor circuit, etc. The power supply ends of the plurality of audio acquisition components 10 are electrically connected one by one to the plurality of current detection circuits 70, so as to detect whether the power supply voltage output by the power supply component 40 is normal, and then the current detection signal is acquired by the master control circuit 30 to control the conduction state of the first switching circuit 50 and the second switching circuit 60.

[0072] Optionally, the wind driven generator operation monitoring device further comprises a plurality of signal amplification circuits, the plurality of signal amplification circuits are in one-to-one correspondence with the plurality of current detection circuits 70 respectively; the input end of the signal amplification circuit is electrically connected with the output end of the current detection circuit 70, and the output end of the signal amplification circuit is electrically connected with the master control circuit 30; the signal amplification circuit is used for amplifying the current detection signal.

[0073] In the embodiment, in order to ensure that the master control circuit 30 accurately confirms whether the power supply voltage output by the power supply component 40 is normal through the current detection signal, a plurality of signal amplification circuits are arranged, and the plurality of signal amplification circuits are in one-to-one correspondence with the plurality of current detection circuits 70 respectively. The input end of the signal amplification circuit is electrically connected with the output end of the current detection circuit 70, and the output end of the signal amplification circuit is electrically connected with the master control circuit 30, so as to realize amplification of the current detection signal, and then the accuracy of the power supply voltage confirmation of the master control circuit 30 to the power supply component 40 is provided. In addition, the master control circuit 30 is in communication connection with the upper computer through a bus, so as to upload the acquired current detection signal to the upper computer.

[0074] Reference Figure 7 In an embodiment of the utility model, the wind driven generator operation monitoring device further comprises a USB interface, the first end of the USB interface is electrically connected with the output end of the audio processing component 20, and the second end of the USB interface is used for accessing a communication line to be in communication connection with the upper computer.

[0075] In the embodiment, the wind driven generator operation monitoring device realizes communication connection with the upper computer by arranging the corresponding USB interface. Compared with the traditional IIS interface, the USB interface is simpler, and the reliability of data transmission is effectively improved.

[0076] The utility model also proposes a kind of wind power generation equipment, the wind power generation equipment includes multiple oar leaves and with multiple the hub of the fixed connection of the oar leaf one end, host computer and as any one of the above wind-driven generator operation monitoring equipment.It is worth noting that, since the wind power generation equipment of the utility model is based on the wind-driven generator operation monitoring equipment described above, therefore, the embodiment of the wind power generation equipment of the utility model includes all the technical solutions of all the embodiments of the wind-driven generator operation monitoring equipment described above, and the technical effects reached are also exactly the same, and here no longer repeat.

[0077] The above is only the exemplary embodiment of the utility model, and does not limit the patent range of the utility model, and any equivalent structural transformation made by using the utility model specification and drawing contents, or direct / indirect application in other related technical fields is included in the patent protection range of the utility model.

Claims

1. A wind power generator operation monitoring device applied to a wind power generation device, characterized by, The wind power generation device comprises a plurality of blades and a hub fixedly connected with one end of the plurality of blades; the wind power generator operation monitoring device comprises: a plurality of audio acquisition components, each of the plurality of audio acquisition components is arranged in one-to-one correspondence with one end of the corresponding blade close to the hub; the audio acquisition component is used for acquiring the sound wave generated by the corresponding blade due to the change of internal gas pressure and the voiceprint generated by the corresponding blade due to external extrusion deformation, and outputting the corresponding sound wave acquisition signal and voiceprint acquisition signal; an audio processing component, the input end of the audio processing component is electrically connected with the output end of each of the plurality of audio acquisition components, and the output end of the audio processing component is in communication connection with the upper computer; the audio processing component is used for analog-digital conversion of the sound wave acquisition signal and the voiceprint acquisition signal; wherein, the audio processing component comprises a USB audio chip.

2. The wind power generator operation monitoring apparatus according to claim 1, wherein The audio acquisition component comprises: a sound wave acquisition component, the sound wave acquisition component is arranged at one end of the corresponding blade close to the hub; the output end of the sound wave acquisition component is electrically connected with the input end of the audio processing component; the sound wave acquisition component is used for acquiring the sound wave generated by the corresponding blade due to the change of internal gas pressure, and outputting the corresponding sound wave signal; a voiceprint acquisition component, the voiceprint acquisition component is arranged at one end of the corresponding blade close to the hub; the output end of the voiceprint acquisition component is electrically connected with the input end of the audio processing component; the voiceprint acquisition component is used for acquiring the voiceprint generated by the corresponding blade due to external extrusion deformation, and outputting the corresponding voiceprint signal.

3. The wind power generator operation monitoring apparatus according to claim 2, wherein The wind power generator operation monitoring device further comprises a power supply component, the input end of the power supply component is electrically connected with the external power supply end, the output end of the power supply component is electrically connected with the power supply end of each of the plurality of audio acquisition components and the power supply end of the audio processing component; the power supply component is used for supplying power to the power-consuming units in the wind power generator operation monitoring device.

4. The wind power generator operation monitoring apparatus according to claim 3, wherein The power supply component comprises: a first voltage conversion circuit, the input end of the first voltage conversion circuit is electrically connected with the external power supply end, and the output end of the first voltage conversion circuit is electrically connected with the first power supply end of the audio processing component; the first voltage conversion circuit is used for converting the first voltage input by the external power supply end into the second voltage and outputting; a second voltage conversion circuit, the input end of the second voltage conversion circuit is electrically connected with the external power supply end, and the output end of the second voltage conversion circuit is electrically connected with the second power supply end of the audio processing component; the second voltage conversion circuit is used for converting the first voltage input by the external power supply end into the third voltage and outputting; a third voltage conversion circuit, the input end of the third voltage conversion circuit is electrically connected with the output end of the second voltage conversion circuit, and the output end of the third voltage conversion circuit is electrically connected with the third power supply end of the audio processing component; the third voltage conversion circuit is used for converting the third voltage input by the second voltage conversion circuit into the fourth voltage and outputting.

5. The wind power generator operation monitoring apparatus according to claim 4, wherein The first voltage conversion circuit comprises a first voltage conversion chip, a first capacitor, a second capacitor and a third capacitor; the second voltage conversion circuit comprises a second voltage conversion chip, a first resistor, a fourth capacitor, a fifth capacitor and a sixth capacitor; and the third voltage conversion circuit comprises a third voltage conversion chip, a seventh capacitor and an eighth capacitor. The first end of the first capacitor is electrically connected with the external power supply end, the first end of the first voltage conversion chip and the first end of the first resistor, and the second end of the first capacitor is electrically connected with the second end of the first voltage conversion chip, the second end of the second capacitor, the second end of the third capacitor, the second end of the fourth capacitor and a ground end; the first end of the second capacitor is electrically connected with the third end of the first voltage conversion chip, the first end of the third capacitor and the first power supply end of the audio processing component; the second end of the first resistor is electrically connected with the first end of the fourth capacitor and the first end of the second voltage conversion chip; the second end of the fourth capacitor is electrically connected with the second end of the second voltage conversion chip, the second end of the fifth capacitor, the second end of the sixth capacitor, the second end of the third voltage conversion chip, the second end of the seventh capacitor, the second end of the eighth capacitor and the ground end; the third end of the second voltage conversion chip is electrically connected with the first end of the fifth capacitor, the first end of the sixth capacitor, the second power supply end of the audio processing component and the first end of the third voltage conversion chip; the second end of the third voltage conversion chip is electrically connected with the second end of the seventh capacitor, the second end of the eighth capacitor and the ground end; and the third end of the third voltage conversion chip is electrically connected with the first end of the seventh capacitor, the first end of the eighth capacitor and the third power supply end of the audio processing component.

6. The wind power generator operation monitoring apparatus according to claim 3, wherein The wind turbine operation monitoring device further comprises a main control circuit; and the audio acquisition component further comprises: a first switch circuit, a first end of the first switch circuit being electrically connected with the output end of the power supply component, a second end of the first switch circuit being electrically connected with the power supply end of the sound wave acquisition component, and a controlled end of the first switch circuit being electrically connected with the main control circuit; the first switch circuit is used for receiving a first switch control signal, and turns on or turns off the passage between the output end of the power supply component and the power supply end of the sound wave acquisition component; a second switch circuit, a first end of the second switch circuit being electrically connected with the output end of the power supply component, a second end of the second switch circuit being electrically connected with the power supply end of the voiceprint acquisition component, and a controlled end of the second switch circuit being electrically connected with the main control circuit; the second switch circuit is used for receiving a second switch control signal, and turns on or turns off the passage between the output end of the power supply component and the power supply end of the voiceprint acquisition component.

7. The wind power generator operation monitoring apparatus according to claim 6, wherein The wind turbine operation monitoring device further comprises A plurality of current detection circuits, the input ends of the plurality of current detection circuits are respectively and correspondingly connected with the power supply ends of the plurality of audio acquisition components, and the output ends of the plurality of current detection circuits are connected with the main control circuit; the current detection circuit is used for detecting the input current of the power supply end of the audio acquisition component and outputting a corresponding current detection signal; The main control circuit is used for receiving the current detection signal and outputting a corresponding switch control signal; the switch control signal includes a first switch control signal and a second switch control signal.

8. The wind power generator operation monitoring apparatus according to claim 7, wherein The wind power generator operation monitoring device further comprises a plurality of signal amplification circuits, and the plurality of signal amplification circuits are respectively and correspondingly connected with the plurality of current detection circuits; the input ends of the signal amplification circuits are connected with the output ends of the current detection circuits, and the output ends of the signal amplification circuits are connected with the main control circuit. The signal amplification circuit is used for amplifying the current detection signal.

9. The wind power generator operation monitoring apparatus according to claim 1, wherein The wind power generator operation monitoring device further comprises a USB interface, the first end of the USB interface is connected with the output end of the audio processing component, and the second end of the USB interface is used for connecting a communication line to communicate with the host computer.

10. A wind power plant, characterized in that The wind power equipment comprises a plurality of blades, a hub fixedly connected with one end of the plurality of blades, a host computer and the wind power generator operation monitoring device according to any one of claims 1 to 9.

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