57 results about "Wave frequency" patented technology

The invention provides a plasma transient time boundary-based terahertz wave spectrum regulation and control method and device, and the method comprises the steps: obtaining femtosecond laser and terahertz waves, and enabling the femtosecond laser and the terahertz waves to enter a terahertz wave transmission space through beam combination; when the femtosecond laser and the terahertz wave synchronously pass through a first position point, the terahertz wave after frequency spectrum regulation and control is obtained; the first position point is located in the terahertz wave transmission space, a time boundary caused by medium transient refractive index sudden change is formed at the first position point when the femtosecond laser ionizes gas to obtain plasma, and frequency shift occurs when terahertz waves pass through the time boundary. According to the invention, the modulation effect on the terahertz wave frequency demand can be realized according to the abrupt change of the refractive index caused by the transient generation of the plasma.

A transducer structure for a surface acoustic device comprises a composite substrate comprising a piezoelectric layer, a pair of inter-digitated comb electrodes, comprising a plurality of electrode means with a pitch p satisfying the Bragg condition, wherein the inter-digitated comb electrodes are embedded in the piezoelectric layer such that, in use, the excitation of a wave propagating mode in the volume of the electrode means is taking place and is the predominant propagating mode of the structure. The present disclosure relates also to an acoustic wave device comprising at least one transducer structure as described above and to a method for fabricating the transducer structure. The present disclosure relates also to the use of the frequency of the bulk wave propagating in the electrode means of the transducer structure in an acoustic wave device to generate contribution at high frequency, in particular, above 3 GHz.

The present disclosure provides a fracture parameter prediction method and related equipment, and relates to the technical field of fracture parameter prediction in oil and gas exploration and development. The method comprises: acquiring seismic data; performing variational mode decomposition on the seismic data to obtain connotation mode component (IMF) data of different scales; and based on the IMF data, using an alternating multiplier method to gradually perform fracture weakness inversion to obtain target fracture parameters. According to the embodiment of the present disclosure, the seismic data can be adaptively divided into different scales, and the noise in the effective wave frequency band range can also be suppressed to a certain extent. Finally, multi-scale fracture weakness inversion is realized in the time domain, and stable fracture prediction is realized.

The application discloses a rate integration hemispherical resonator gyro angular rate output method, and belongs to the technical field of inertial technology. The application is aimed at solving the problem of large measurement noise of standing wave azimuth angle and poor gyro output precision in the existing rate integration hemispherical resonator gyro control method. In the application, the inherent working frequency of the gyro is taken as the initial value of the forward traveling wave frequency and the reverse traveling wave frequency, and the reference signals of the forward traveling wave and the reverse traveling wave are calculated and obtained; the reference signals are used to demodulate the electrode detection signals by using a low-pass filter, and the secondary demodulation quantity of the gyro angular rate is obtained by using the primary demodulation quantity; the phase difference between the forward traveling wave and the reverse traveling wave of the two groups of electrode detection signals and the forward traveling wave and the reverse traveling wave reference signals is calculated; the forward traveling wave and the reverse traveling wave reference signals are used to calculate the closed-loop real-time tracking of the forward traveling wave and the reverse traveling wave of the hemispherical resonator, and the sensitive axis angular rate measurement value of the rate integration hemispherical resonator gyro is calculated. The application is used for the angular rate output control of the rate integration hemispherical resonator gyro.

This invention provides an adaptive high-efficiency wave energy generation device and method, including a linear generator, a data acquisition device, a motor, an energy-absorbing float, a connecting rod, and a central controller. At least one motor is mounted on the bottom of the linear generator, and the bottom of each motor is connected to the energy-absorbing float. The connecting rod is mounted on the top of the energy-absorbing float and extends into the linear generator. The data acquisition device and the motor are both signal-connected to the central controller. The central controller drives the motor to apply optimal output force to the energy-absorbing float based on the output data from the data acquisition device. The energy-absorbing float achieves extremely high wave energy capture efficiency for the current ocean waves. It actively adjusts the force output by the motor to the energy-absorbing float for different wave frequencies, ensuring that the force output by the motor is always equal to the optimal output force, thus achieving all-weather high-efficiency wave energy capture.

The application provides a method for identifying thin interbedded gas layers based on low-frequency acoustic signals, belongs to the technical field of unconventional natural gas exploration, and solves the problem that the prior art cannot apply low-frequency acoustic signals of earthquakes to identify oil and gas reservoirs; the method comprises the following steps: S1, calculating the pore elastic parameters of a target layer, and constructing a pore elastic stratum model of the target layer; S2, calculating the pore elastic wave field response characteristics of a single interface or a stratum group of the target layer, and establishing a reflection amplitude and wave frequency relationship volume; S3, performing frequency division processing on seismic records, and determining the position of low-frequency amplitude anomalies; S4, calculating vertical pore elastic wave seismic records, combining the pore elastic wave field response characteristics and the reflection amplitude and wave frequency relationship volume, and interpreting the position of low-frequency amplitude anomalies to determine a region related to thin interbedded gas layers; the application can effectively determine the position relationship between low-frequency amplitude anomalies and gas layers in seismic records, fills the gap in the exploration technology, and improves the interpretation accuracy of seismic identification of gas layers.

The invention provides an anti-interference echo signal detection method and system for an ultrasonic flowmeter, and relates to the technical field of signal processing. Comprising the following steps: identifying wave crest positions and wave trough positions of a plurality of continuous waves in an ultrasonic echo signal, and determining time and amplitudes of the wave crest positions and the wave trough positions; calculating wave amplitudes of the plurality of waves, judging whether the wave amplitudes of the plurality of waves are all greater than an amplitude threshold, and if so, meeting the amplitude requirement; calculating wave crest frequencies and wave trough frequencies of the plurality of waves, judging whether differences between the wave crest frequencies and the wave trough frequencies of the plurality of waves and the frequency of the driving signal are within a set frequency width range or not, and if so, meeting the frequency requirement; the ultrasonic echo signals meeting the amplitude requirement and the frequency requirement at the same time serve as effective echo signals. According to the method, the echo signal is identified and positioned by taking the echo frequency and the echo amplitude as judgment conditions, so that the situations of signal failure and the like caused by abnormal deformation of the signal are reduced.

The present application relates to a kind of wave frequency energy emission devices, the device includes: electromagnetic modulation layer, for modulating preset frequency and power electric signal pulse, and change magnetic field is generated according to the electric signal pulse;Energy conversion layer is arranged in the magnetic field range of the change magnetic field, and the energy conversion layer is used to convert the magnetic field energy of the change magnetic field into vibration energy wave;The energy conversion layer is composed of one or two kinds of strain materials, and the expansion rate and response time of each strain material are different;The vibration energy wave is used to cause the resonance inside target object, to change the state of the target object.The present application utilizes the characteristics that the energy conversion layer generates expansion with the change of electromagnetic field, causes vibration, thereby converts into high-frequency vibration wave, thereby improves the efficiency and effect of energy output.

The disclosure relates to a sensor for a quantity of a medium, such as the permittivity of the medium. This sensor comprises at least one sensitive element capable of: injecting waves, the injection being controlled by the application of an input signal, and collecting received waves, perturbed by physical properties of the medium related to said quantity, to form an output signal having, with respect to the input signal, a modulation from which a measurand indicative of said quantity of the medium is determined. The sensor also comprises a control unit capable of generating said input signal with a wave frequency to be injected corresponding to a chosen excitation frequency, and a processing unit applying a demodulation of the output signal to determine the corresponding measurand. In particular, the processing unit is configured to cooperate with the control unit to generate the input signal.The excitation frequency is adjusted according to the input and output signals using a feedback loop within the processing unit. This maintains a linear response of the output signal over a range of measurands by continuously adjusting the excitation frequency. The feedback loop is thus configured to ensure constant sensor sensitivity over this range. (See Figure 4 for an abstract diagram.)

Disclosed is buoyant wave energy capture device, adapted to float adjacent to an upper surface of a body of water over which waves pass, and adapted to capture a portion of the radiated waves created by its own rising and falling in response to incident and / or passing environmental waves. A power take off mechanism combined with the disclosed wave energy capture device may be tuned to a specific wave frequency, and thereby optimally extract energy from a motion of a single frequency, even the wave energy capture device may be excited and / or energized by waves of any of a relatively broad range of frequencies, thereby increasing the power-generation and cost efficiencies of such devices relative to wave energy conversion devices of the prior art.

The invention discloses a self-adaptive elastic tube double-oscillation water column wave energy conversion device, which belongs to the technical field of ocean energy utilization and comprises an elastic tube, hard tubes at two ends and an in-tube oscillation water column, and an adjusting assembly in the hard tubes is electrically connected with a free end turbine device and a controller. The adjusting assembly comprises internal and external liquid level sensors, a bidirectional water pump and adjusting blades capable of surrounding air adjusting holes. The device combines a double-oscillation water column with the elastic pipe, improves the natural oscillation period, is easy to resonate with waves, converts wave energy at two ends, absorbs energy along the full length of the elastic pipe, and improves the energy capturing efficiency and the space range; the system oscillation period can be adjusted by adjusting the pore diameter of the air hole, and the efficient frequency bandwidth is widened; different wave frequencies are matched, and the power generation efficiency of the device is improved. The flexible structure of the elastic tube improves the survivability under extreme wave conditions; the two-way water pump can adjust internal water pressure according to wave water level and wave height to adapt to tide level change and enhance protection, the water surface of an oscillating water column in the pipe is stable, and the overall stability is high.

The application provides a wave equation full-wave Q tomography method, which comprises the following steps: performing FFT transformation on existing seismic records to determine the frequency of a Ricker wavelet; performing forward simulation using the frequency of the Ricker wavelet determined in step 1 to obtain seismic correlation data; converting the seismic correlation data to a local domain and performing FFT on the data in the local domain to obtain the frequency of a single seismic event; obtaining the peak frequency shift of each seismic event in the local domain according to the frequency of the single seismic event; obtaining a companion source according to the peak frequency shift; performing wave field continuation calculation according to the companion source to obtain a back-propagating wave field; obtaining a gradient using the back-propagating wave field; and performing iterative updating using a conjugate gradient method according to the gradient to finally obtain an updated Q model. The method provided by the application can be simulated to obtain a relatively accurate Q model.

The present application relates to the field of wave energy generating buoy, disclose a kind of after bending pipe wave energy generating buoy and its air turbine switching device and method.For the defects that the existing single turbine buoy can only adapt to specific wave frequency, wide operating condition, low power generation efficiency, and easy to overload damage in extreme sea conditions, the present application connects wiles turbine and impact turbine at the end of single after bending pipe air path, real-time monitoring of wave frequency by wave frequency sensor, sliding guide cover driven by motor driving screw rod, to realize the adaptive switching of two turbines.When the wave frequency exceeds the effective range, the impact turbine is selected by default;In the effective range, greater than the threshold frequency selects the impact turbine, and less than the threshold frequency selects the wiles turbine.The present application combines the performance advantages of two turbines, the annual average power generation efficiency is improved by 32%, the turbine service life is extended to 8 years, the power supply reliability is more than 95%, and is suitable for power supply in offshore scenes such as islands and offshore platforms.

The invention discloses an arbitrary-shape fixed structure wave load identification method based on field wave elevation, relates to the field of ocean engineering structure health monitoring, and aims to solve the problem that a traditional method depends on incident wave information and is only suitable for a simple structure. The method comprises the following steps: averaging M surface elements on a wet surface of a discrete structure; pre-calculating and storing a transfer matrix which only depends on the structure geometry, the measuring point position and the wave frequency; wave elevation time history data of W measuring points are collected in real time, and main frequency components are reserved through fast Fourier transform; calling a corresponding transfer matrix, and obtaining a surface element pressure Fourier component through matrix multiplication; and performing inverse transformation to synthesize a pressure time history and integrating to obtain a total wave load. The invention also discloses a system for realizing the method, electronic equipment, a computer program product and a storage medium. The method is high in universality, does not need incident wave information, is efficient in calculation, and is suitable for various fixed ocean structures.

The invention relates to a cable insulation fault positioning method and system, and the method comprises the following steps: collecting a three-phase voltage traveling wave signal when a cable has a single-phase insulation damage grounding fault, and carrying out the signal decoupling, and obtaining an independent line mode component and a zero mode component; a Db45 wavelet basis is used as a mother wavelet, multi-scale wavelet decomposition and reconstruction are carried out on the decoupled line mode component so as to extract fault traveling wave head features, and the number of layers of multi-scale wavelet decomposition is determined according to the sampling frequency and the power grid fundamental wave frequency; and according to a wavelet reconstruction result, detecting the moment when a fault traveling wave head arrives at monitoring points at two ends of the line, thereby calculating the distance from a fault point to one end of the line. Compared with the prior art, the method has the advantages that inter-phase coupling interference is eliminated through phase-mode transformation, and serious voltage distortion and harmonic interference in a power grid are effectively suppressed by using the excellent time-frequency localization characteristic of the Db45 wavelet basis, so that the accuracy and reliability of cable insulation fault positioning are greatly improved.

The application discloses a rock elastic wave frequency dispersion and attenuation characteristic measurement system and method, and relates to the technical field of rock mechanics, and can be used for measuring the rock elastic wave frequency dispersion and attenuation characteristic of a rock sample. The measurement system comprises an axial pressure control chamber, the lower part of the axial pressure control chamber is provided with a confining pressure bin, the pressure application end of the axial pressure control chamber is located at the upper part of the confining pressure bin, the inside of the confining pressure bin is further provided with a probe body, the probe body is used for bonding with a rock sample, the inside of the confining pressure bin is further provided with a positioning and sealing device used for placing the rock sample, heating fins are further installed on the inner wall of the confining pressure bin, the positioning and sealing device is further connected with an exciter through an excitation pipeline, and a force sensor is installed on the excitation pipeline. By pre-embedding an ultrasonic signal generating device in the probe body, the problem that a sample cannot be repeatedly tested in an ultrasonic frequency band during a medium and low frequency band test is solved, a closed loop control servo hydraulic loading mode is adopted for the axial pressure controller and the confining pressure controller to replace a traditional gas pressure application mode, the target pressure can be quickly and accurately reached, and the safety of the experimental process can be ensured under high confining pressure.

The invention relates to a wave signal acquisition device, preferably a seismic acquisition device, comprising a housing (1); a wave sensor system housed inside the housing (1) and coupled to the bottom wall of the housing. The housing (1) is provided with an acoustic black hole (2) made of polymer, preferably flexible, so as to absorb parasitic wave frequencies below 500 Hz, preferably below 400 Hz. Figure for the abstract: Fig. 5

The invention discloses a self-diversion type overwater emergency rescue floating platform, and relates to the technical field of overwater emergency rescue floating platforms, the self-diversion type overwater emergency rescue floating platform comprises an overwater emergency rescue floating platform body, the top end of the overwater emergency rescue floating platform body is provided with a rescue chamber, and the top of the rescue chamber is provided with a flexible solar film. The ultrasonic wave wind speed sensor is used for measuring real-time wind speed / wind direction, the Doppler flow speed sensor is used for measuring underwater water flow speed / flow direction, and the pressure type wave height sensor is used for measuring wave height / wave frequency, so that transverse wind wave monitoring is realized under cooperation, and then data is transmitted to the main controller for analysis; an electric telescopic rod in the deformation flow guide mechanism is driven to extrude an elastic deformation plate to be gradually bent into an arc shape from an initial parallel state (the radian is increased along with the increase of the wind wave grade) according to the wind wave grade, and a rubber buffer cushion is matched to resist wind wave impact and guide the impact to be shunted from the two sides of the floating platform, so that interference of wind waves to rescue operation is reduced; the standing stability of personnel is improved.

The application discloses a subway segment post-hole calculation and identification method and system based on knocking impact echo, and the method comprises the following steps: a vertical excitation subway segment is adopted by using an electric knocking device, and transient vibration response and sound radiation signals are synchronously collected by an acceleration sensor and a pickup; the device controls the voltage in real time according to the contact force, controls the knocking pulse waveform and amplitude, and ensures that the elastic wave frequency band covers the resonance range of the segment thickness; the vibration signal is denoised by empirical mode decomposition, the time-frequency spectrum is generated by short-time Fourier transform, and the direct wave and multiple reflected waves are separated; the main frequency, frequency width and sound pressure attenuation rate of the frequency spectrum are extracted, the effective thickness is calculated, a model is constructed, and the hole anomaly is judged; the probability statistical product coupling confidence factor is introduced, a report containing the hole coordinates, depth, range and compactness is output after reaching the standard, and the grouting repair parameters are matched; and reliable technical support is provided for the safety of the iron tunnel structure.

The application discloses a sea depth prediction method and system based on a variational filtering method and a baseband removal method, and a storage medium, relates to the technical field of geographic information data processing, and comprises the following steps: obtaining a gravity anomaly residual frequency domain signal and a ship-surveyed sea depth residual frequency domain signal; performing filter design to obtain a sea depth filter and a gravity anomaly filter; performing filtering to obtain a ship-surveyed sea depth mid-wave frequency domain signal and a gravity anomaly mid-wave frequency domain signal; obtaining a target area mid-wave predicted sea depth, a target area long-wave predicted sea depth and a target area short-wave predicted sea depth; and obtaining a target area predicted sea depth. In the scheme, the existing discrete data is used to obtain the target area predicted sea depth from the signal decomposition angle based on the semi-physical set and the semi-data fusion driving mode, the existing data is constrained in a fuzzy and wide range, the application range is widened, the experience interference is reduced, the time consumption is reduced while the result convergence is ensured, and the sea depth prediction effect is good.

The invention relates to a device for detecting the flow rate of fuel gas in a fuel gas pipe and a range hood, and the device comprises a surface acoustic wave sensor which is tightly attached to the outer wall of the fuel gas pipe connected with a kitchen range, and is used for transmitting an excitation sound wave signal into the fuel gas pipe connected with the kitchen range, outputting a returned reflected wave frequency deviation signal delta f and a reflected wave amplitude attenuation rate beta; the signal analysis module is connected with the output end of the surface acoustic wave sensor, and is used for measuring the contents of methane, ethane and propane flowing through the gas pipe according to delta f and beta, and calculating the flow rate of the gas flowing through the gas pipe after the gas is converted into a standard methane heat value, and recording the flow rate as vstd; and the signal sending module is connected with the signal analysis module and is used for sending the vstd obtained by the signal analysis module to external equipment. Compared with the prior art, the method has the advantages that the actual components of the fuel gas in the fuel gas pipe can be measured without intrusive installation, and the fuel gas flow rate after the standard methane heat value is converted according to the actual components of the fuel gas can be obtained.

A transducer structure for a surface acoustic device comprises a composite substrate comprising a piezoelectric layer, a pair of inter-digitated comb electrodes, comprising a plurality of electrode means with a pitch p satisfying the Bragg condition, wherein the inter-digitated comb electrodes are embedded in the piezoelectric layer such that, in use, the excitation of a wave propagating mode in the volume of the electrode means is taking place and is the predominant propagating mode of the structure. The present disclosure relates also to an acoustic wave device comprising at least one transducer structure as described above and to a method for fabricating the transducer structure. The present disclosure relates also to the use of the frequency of the bulk wave propagating in the electrode means of the transducer structure in an acoustic wave device to generate contribution at high frequency, in particular, above 3 GHz.

This application discloses a dynamic adaptive amphibious vehicle path and energy consumption optimization method, relating to the field of path and energy consumption optimization. The method includes: acquiring information data; the information data includes: environmental data and amphibious vehicle-related data; the environmental data includes: wind speed, wind direction, ocean current speed, ocean current direction, wave height, and wave frequency; the amphibious vehicle-related data includes: position, speed, and acceleration; the information data contains timestamps; inputting the information data into a path and energy consumption optimization model to obtain optimized planned path information; the optimized planned path information is the lowest energy-consuming planned path determined based on a heuristic function; the path and energy consumption optimization model employs reinforcement learning algorithms and A / B algorithms. * The algorithm is derived from an amphibious vehicle surface energy consumption model and a heuristic function, after updates and optimizations. This application enables path and energy consumption optimization, improving the amphibious vehicle's endurance and mission completion efficiency.

The invention discloses an abacus bead type wave power generation device, and belongs to the technical field of wave power generation. Comprising a threaded rounded prism, the threaded rounded prism is vertically arranged, the lower end of the threaded rounded prism sequentially penetrates through a bead-shaped floater, a lower stopper and a lifting base, and the threaded rounded prism is movably connected with the lifting base; the lower stop dog is fixedly connected with the lifting base, and the upper stop dog is fixed to the upper end of the threaded rounded corner prism. The bead-shaped floater moves up and down along with waves, conversion of up and down actions is achieved through engagement and disengagement of the tooth claws and the threaded rounded corner prisms, and in the down action, the magnet array and the winding move relatively to generate electric energy. The length of exposed threads of the thread fillet prism is adjusted through the lifting base, the power generation action period can be conveniently adjusted, and therefore the frequency range of waves capable of being captured is adjusted. The problem that an existing wave energy power generation device is narrow in frequency adaptability is effectively solved, and the wave energy power generation device has the advantages of being wide in adaptive frequency band, stable in power generation efficiency, environmentally friendly, easy and convenient to deploy and the like.

The application discloses a buoy and a control method thereof. The buoy comprises a floating body, a morphing wing and an adjusting mechanism. The morphing wing is connected with the floating body and is provided with a containing cavity. The adjusting mechanism is arranged in the containing cavity and comprises a driving assembly and an adjusting assembly. The fixed end of the driving assembly is connected with the morphing wing, the driving end of the driving assembly is hinged with the adjusting assembly, and the adjusting assembly is hinged with the morphing wing. The driving assembly can drive the adjusting assembly to adjust the shape of the morphing wing, so as to adjust the natural frequency of the buoy. The application can adjust the natural frequency of the buoy, so that the dynamic adjustment of the natural frequency of the buoy is realized, the buoy can resonate with waves in a wider frequency range, the optimal capture efficiency can be maintained in a wider wave frequency range, and the energy capture efficiency of the buoy in different sea conditions is improved.

This invention provides a Bragg resonance breakwater design method and breakwater. The Bragg resonance breakwater design method includes acquiring wave field characteristic parameters of the target sea area and determining the target wave frequency band based on the wave field characteristic parameters; determining the target wave frequency of each resonant unit based on the target wave frequency band, and determining the geometric parameters of the resonant cavity of the resonant unit based on the target wave frequency, so that the inherent resonant frequency of the resonant cavity matches the target wave frequency; determining the reflection coefficient index to characterize the wave dissipation effect based on the target wave frequency band, and determining the arrangement parameters of each resonant unit based on the reflection coefficient index under the premise of satisfying preset constraints, wherein the arrangement parameters change stepwise along the incident wave propagation direction; and outputting the resonant cavity geometric parameters and arrangement parameters corresponding to each resonant unit to form a Bragg resonance breakwater design scheme.

The invention provides a harmonic detection method for a charging pile, and relates to the technical field of harmonic detection, and the method comprises the following steps: 1, signal collection; step 2, wavelet decomposition; step 3, signal reconstruction; step 4, interference positioning; step 5, acquiring a fundamental wave frequency; step 6, building an Adaline network; 7, adjusting a weight vector; according to the method, the multi-resolution analysis characteristic of wavelets is combined and utilized, noise is effectively removed, meanwhile, useful components of the signals are reserved, the Adaline improved network is combined, the denoised signals serve as input, expected output is known harmonic components, the precision and efficiency of harmonic detection are improved, and the method has the advantages that the method is simple and convenient to operate, and the method is suitable for large-scale popularization and application. And the adaptability and the real-time performance of the system are enhanced.

The utility model discloses an oscillating water column type wave power generation device which comprises a cavity and an air turbine power generation device, and the air turbine power generation device is communicated with the cavity and is configured to generate power under the action of air pressure difference. The device further comprises a wave frequency monitoring device, a driving device, a controller and a first plate. The first plate is arranged in the cavity, and the first plate is configured to be movable to change the capacity of the cavity; the driving device is connected with the first plate and is used for driving the first plate to move; the controller is electrically connected with the wave frequency monitoring device and the driving device. Due to the adoption of the technical scheme, compared with the prior art, the capacity of the cavity is changed by moving the first plate, and then the fundamental frequency of the cavity is changed to enable waves in the cavity to achieve resonance, so that the movement amplitude of the waves in the cavity is increased, and the power generation efficiency of the oscillating water column type wave energy power generation device is improved; and efficient work of power generation equipment is ensured.

A method for judging a pointed cone transition position based on a second modal wave amplitude comprises the following steps: carrying out a pointed cone boundary layer stability test in a hypersonic wind tunnel, and capturing a second modal wave; and judging the transition position and the surface flow state distribution of the pointed cone model by comparing the amplitudes of the second modal waves at different flow direction positions. Compared with a traditional transition position measurement method, the method provided by the invention can obtain the high-frequency pulsation information of the pointed cone surface while measuring the transition position. The method provided by the invention is convenient and rapid, the second modal wave frequency and the model surface transition position can be obtained at the same time, and a method is provided for improving the transition measurement capability of the hypersonic wind tunnel.