Recognition method, system and equipment for incoming wave direction of regional discontinuous rail and medium

Abstract

The invention belongs to the technical field of railway track monitoring, and provides a method and system for identifying the incoming wave direction of a regional broken track, electronic equipment and a storage medium. The method comprises the following steps: the sending sensor sends a signal according to system configuration; the two receiving sensors collect the signals to obtain a first receiving matrix and a second receiving matrix respectively; and based on the first receiving matrix and the second receiving matrix, calculating an incoming wave direction through matrix space rotation invariant characteristics. When the steel rail is broken, sound signal propagation is affected, and broken rail monitoring can be achieved according to characteristic changes of sound wave signals.

Description

Technical Field

[0001] The present invention belongs to the technical field of railway track monitoring, and in particular relates to a method, system, electronic equipment and storage medium for identifying the direction of incoming waves of section broken rails. Background Art

[0002] Rails are an important basic carrier of rail transit, and their operating safety directly affects railway safety. The state of rails is easily affected by factors such as temperature changes, train load pressure, and geological changes, which can lead to rail damage and breakage, seriously affecting the safety of train operation. At present, a more feasible rail break monitoring solution is an interval rail break monitoring system based on ultrasonic guided waves, in which multiple groups of sending nodes and receiving nodes are alternately arranged along the direction of the rails. The sending nodes and receiving nodes divide the rails into multiple sections. When the rails in a section are completely broken, the signal of the sending node in the section cannot reach the receiving node, so that the rail break can be monitored.

[0003] However, there is a delay problem in the synchronization between the transmitter and the receiver, which leads to the risk of false alarms and missed alarms in the system. At the same time, each section sends and receives signals at different times to judge the status of the rail, which makes it impossible for the system to monitor the status of the entire rail in real time. Summary of the invention

[0004] To solve the above problems, the present invention provides a method, system, electronic device and storage medium for identifying the direction of incoming waves of broken tracks in an interval. A sending sensor sends an acoustic wave signal of a specific frequency. When a receiving sensor identifies this specific acoustic wave signal, it collects and organizes the acoustic wave signal to obtain multiple acoustic wave data, and then integrates and groups them to obtain an array, including a first receiving matrix and a second receiving matrix. The angle between the incoming wave direction and the vertical direction is obtained through the spatial rotation invariant characteristic, and then the incoming wave direction is obtained.

[0005] In order to solve the above technical problems, the present invention provides a method for identifying the direction of the incoming wave of the section broken track in the first aspect. Signal wave sending nodes and signal wave receiving nodes are sequentially arranged at intervals along the rail direction; the sending node is provided with an on-rail sending sensor, and the signal wave receiving node is provided with two on-rail receiving sensors; The method comprises: The sending sensor sends a signal according to the system configuration; The two receiving sensors collect the signals to obtain a first receiving matrix and a second receiving matrix respectively; Based on the first receiving matrix and the second receiving matrix, the incoming wave direction is calculated by using the matrix space rotation invariance characteristic.

[0006] According to a preferred embodiment of the present invention, the sending sensor sends a signal according to the system configuration, including: The signal is set to be a sine wave modulation signal with a preset transmission interval and a preset center frequency.

[0007] According to a preferred embodiment of the present invention, the two receiving sensors collect the signals to obtain a first receiving matrix and a second receiving matrix respectively, including: When a signal with a preset center frequency is collected, the signal with the preset center frequency is sorted to obtain signal data; The signal data obtained by the receiving sensor is set in a matrix corresponding to the receiving sensor to obtain a first receiving matrix and a second receiving matrix.

[0008] According to a preferred embodiment of the present invention, the step of calculating the incoming wave direction by using the matrix space rotation invariance characteristic includes: The first receiving matrix and the second receiving matrix form an initial matrix, and generate a covariance matrix of the initial matrix; The eigenvectors obtained according to the covariance matrix form a signal subspace, and the angle between the incoming wave direction and the vertical direction is obtained through the distance between the two receiving sensors; The incoming wave direction is obtained according to the angle between the incoming wave direction and the vertical direction.

[0009] In order to solve the above technical problems, the second aspect of the present invention provides a system for identifying the direction of incoming waves of section broken rails, the system comprising: a transmitting sensor, a receiving sensor, a control platform and a trackside unit; The sending sensor is used to send a signal according to the system configuration; The receiving sensor is used to collect the signal; The control platform collects the signals through the two receiving sensors to obtain a first receiving matrix and a second receiving matrix respectively, and calculates the incoming wave direction based on the first receiving matrix and the second receiving matrix through the matrix space rotation invariance characteristic; The trackside unit is used to transmit the collected signals to the control platform and drive the sending sensor and receiving sensor to work.

[0010] According to a preferred embodiment of the present invention, it comprises: The sending sensor is also used to set the signal to be a sinusoidal wave modulated signal with a preset sending interval and a preset center frequency.

[0011] According to a preferred embodiment of the present invention, it comprises: The control platform is also used for collecting a sound wave signal of a preset center frequency, the sound wave signal is sent to the control platform through the trackside unit, and the control platform organizes the sound wave signal to obtain sound wave signal data; The control platform is also used to set the signal data obtained by the receiving sensor into a matrix corresponding to the receiving sensor to obtain a first receiving matrix and a second receiving matrix.

[0012] According to a preferred embodiment of the present invention, it comprises: The control platform is also used to form an initial matrix with the first receiving matrix and the second receiving matrix, and generate a covariance matrix of the initial matrix; The control platform is also used to form a signal subspace according to the eigenvectors obtained from the covariance matrix, and obtain the angle between the incoming wave direction and the vertical direction through the distance between the two receiving sensors; The control platform is also used to obtain the incoming wave direction according to the angle between the incoming wave direction and the vertical direction.

[0013] In order to solve the above technical problem, the third aspect of the present invention provides an electronic device, comprising: processor; and a memory storing computer executable instructions, wherein the computer executable instructions, when executed, cause the processor to perform the method described in any one of the above embodiments.

[0014] In order to solve the above technical problems, the fourth aspect of the present invention proposes a computer storage medium, wherein the computer storage medium stores one or more programs, and when the one or more programs are executed by a processor, the method described in any one of the above embodiments is implemented.

[0015] Compared with the prior art, the present invention has the following advantages: the present invention sends an acoustic wave signal according to preset information through a sending sensor, continuously acquires and collects acoustic wave signals through a receiving sensor, and acquires the distance between two receiving sensors in the same group, sorts the received acoustic wave signals, obtains acoustic wave signal data, classifies and integrates the acoustic wave signal data, integrates the acoustic wave signal data obtained by the same receiving sensor, obtains multiple data, places them in a matrix, obtains a first receiving matrix and a second receiving matrix, combines the matrices to obtain an initial matrix, obtains a covariance matrix of the initial matrix by transposing the matrix, performs eigenvalue decomposition through the covariance matrix, obtains eigenvalues ​​and eigenvectors, forms a signal subspace, and then obtains the incoming wave direction. When the rail breaks, the propagation of the acoustic signal is affected, and the broken rail monitoring can be realized according to the characteristic changes of the acoustic wave signal.

[0016] Other features and advantages of the present invention will be described in the following description, and partly become apparent from the description, or understood by practicing the present invention. The purpose and other advantages of the present invention can be realized and obtained by the structures pointed out in the description, claims and drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 It shows a structural diagram of a system for identifying the incoming wave direction of a section broken track according to an embodiment of the present invention; Figure 2 A schematic diagram of a flow chart of a method for identifying the direction of incoming waves of a section broken track according to an embodiment of the present invention is shown; Figure 3 A second flow chart of a method for identifying the direction of incoming waves of a section broken track according to an embodiment of the present invention is shown; Figure 4 A third flow chart of a method for identifying the direction of incoming waves of a section broken track according to an embodiment of the present invention is shown; Figure 5 A schematic diagram of sending acoustic wave signals of a method for identifying the direction of incoming waves of a section broken track according to an embodiment of the present invention is shown; Figure 6 A diagram showing an acoustic wave model of a method for identifying the incoming wave direction of a section rail break according to an embodiment of the present invention; Figure 7 A schematic structural diagram of an electronic device according to an embodiment of the present invention is shown. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] The same reference numerals in the drawings represent the same or similar elements, components or parts, and thus the repeated description of the same or similar elements, components or parts may be omitted below. It should also be understood that although the first, second, third and other attributives representing the numbers may be used herein to describe various devices, elements, components or parts, these devices, elements, components or parts should not be limited by these attributives. In other words, these attributives are only used to distinguish one from another. For example, the first device may also be called the second device, but it does not deviate from the essential technical solution of the present invention. In addition, the terms "and / or" and "and / or" refer to all combinations including any one or more of the listed items.

[0021] See also Figure 1 , Figure 1 This is a structural diagram of a system for identifying the direction of incoming waves of a section broken track provided by the present invention. Figure 1 As shown, the system includes: a transmitting sensor, a receiving sensor, a control platform and a trackside unit.

[0022] In this embodiment, a measured rail can be divided into several sections, each section of the rail includes a sending node rail and a receiving node rail, a sending node rail includes a sending sensor, a receiving node rail includes a group of receiving sensors, a group of receiving sensors includes two receiving sensors, and each sending node rail includes a section between the adjacent receiving node rail.

[0023] In this embodiment, after the system starts working, it first performs a self-check of the device, and after detecting that the device is operating normally, it starts to execute subsequent steps.

[0024] In this embodiment, the sending sensor is specifically used to send a signal according to the system configuration.

[0025] In this embodiment, the receiving sensor is specifically used to collect the signal.

[0026] In this embodiment, the control platform is specifically used to collect the signals through the two receiving sensors to obtain the first receiving matrix and the second receiving matrix respectively, and calculate the incoming wave direction based on the first receiving matrix and the second receiving matrix through the space rotation invariance characteristic of the matrix.

[0027] In this embodiment, the trackside unit is specifically used to transmit the collected signals to the control platform and drive the sending sensor and the receiving sensor to work.

[0028] In this embodiment, the sending sensor is specifically used to set the sending signal to be a sinusoidal wave modulation signal with a preset sending interval and a preset center frequency.

[0029] In this embodiment, the control platform is specifically used to collect a sound wave signal of a preset center frequency. The signal of the preset center frequency is sent to the control platform through a trackside unit, and the control platform organizes the signal of the preset center frequency to obtain signal data.

[0030] In this embodiment, the control platform is specifically used to set the signal data obtained by the receiving sensor into a matrix corresponding to the receiving sensor to obtain a first receiving matrix and a second receiving matrix.

[0031] In this embodiment, the control platform is specifically used to form an initial matrix with the first receiving matrix and the second receiving matrix, and generate a covariance matrix of the initial matrix.

[0032] In this embodiment, the control platform is specifically used to form a signal subspace according to the eigenvectors obtained from the covariance matrix, and obtain the angle between the incoming wave direction and the vertical direction through the distance between the two receiving sensors.

[0033] In this embodiment, the control platform is specifically used to obtain the incoming wave direction according to the angle between the incoming wave direction and the vertical direction.

[0034] See also Figure 2 , Figure 2 This is a flow chart of a method for identifying the direction of incoming waves of a section broken track provided by the present invention. Figure 2 As shown, the method includes: S11. The sending sensor sends a signal according to system configuration.

[0035] In this embodiment, a sound wave signal is sent based on a preset system configuration, and the sound wave signal includes a wave velocity and a wavelength.

[0036] See also Figure 5 , Figure 5 FIG. 1 is a schematic diagram of sending acoustic wave signals of a method for identifying the direction of incoming waves of a section broken track provided by the present invention, such as Figure 5 As shown, step S11 specifically includes: In this embodiment, the transmission interval of the transmitting sensor is T, wherein the odd-numbered nodes (1 / 3 / 5...) transmit at a center frequency of f between 0 and T / 2. The even-numbered nodes (2 / 4 / 6…) send the same signal at T / 2~T.

[0037] In this embodiment, the sound wave signal sent by the sensor may be a 5-cycle sine signal modulated by a 35 kHz Hanning window.

[0038] S12. The two receiving sensors collect the signals to obtain a first receiving matrix and a second receiving matrix respectively.

[0039] In this embodiment, the receiving sensor determines the rail status by continuously collecting sound wave signals and reports it to the control platform through the trackside equipment.

[0040] In this embodiment, the fixed distance between two receiving sensors in the same group can be obtained by obtaining system configuration or by direct measurement.

[0041] S13. Based on the first receiving matrix and the second receiving matrix, calculate the incoming wave direction by using the matrix space rotation invariance characteristic.

[0042] See also Figure 6 , Figure 6 This is a sound wave model diagram of a method for identifying the incoming wave direction of a section rail break provided by the present invention, such as Figure 6 As shown, step S13 specifically includes: In this embodiment, a receiving node with abnormal sound wave signal is obtained from the measured rail, including receiving sensor 1, which is denoted as x. and receiving sensor 2, denoted as x ;x and x The acoustic wave signals are collected separately and x and x The collected sound wave signals are uploaded to the control platform respectively. The control platform obtains the incoming wave direction based on the fixed distance between two receiving sensors in the same group and the spatial rotation invariance characteristic.

[0043] See also Figure 3 , Figure 3 The second flow chart of the method for identifying the direction of incoming wave of a section broken track provided by the present invention is as follows: Figure 3 As shown, the method includes: S21. When a signal of a preset center frequency is collected, the signal of the preset center frequency is sorted to obtain signal data.

[0044] In this embodiment, the method for determining whether the sound wave signal collected by the receiving sensor is the sound wave signal emitted by the sending sensor is to monitor the sound wave signal collected by the receiving sensor and determine whether the sound wave signal has the same center frequency as the sound wave signal emitted by the sending sensor.

[0045] In this embodiment, after obtaining a received sound wave signal that is consistent with the center frequency of the sound wave signal sent by the sending sensor, x The collected sound wave signals are classified by frequency and wave speed. Similarly, x The collected sound wave signals are classified by frequency and wave velocity to obtain sound wave signal data.

[0046] S22. The signal data obtained by the receiving sensor is set into a matrix corresponding to the receiving sensor to obtain a first receiving matrix and a second receiving matrix.

[0047] In this embodiment, the first receiving matrix is ​​denoted as x (t), record x The first receiving matrix is ​​recorded as x (t), record x The sound wave signal data.

[0048] In this embodiment, the fixed distance between two receiving sensors in the same group is obtained, x (t) is represented by s(t), and by the far-field assumption and narrow-band signal assumption, x (t) can also be expressed as s(t).

[0049] Specifically, x (t) can be expressed as x (t) = s(t) exp(jωT ); Where j is the imaginary unit, exp is the natural exponential function, ω is the angular frequency, T For x The received signal is equal to x The time delay of receiving the signal.

[0050] Specifically, T =dsinθ / c; Among them, d is the fixed distance between two receiving sensors in the same group, θ is the angle between the incoming wave direction and the vertical direction, and c is the wave speed.

[0051] Specifically, x (t) and x (t) The sound wave signal data received by the two matrices can be expressed in matrix form as follows: ; in, f is the frequency, and Noise is the complex Gaussian white noise.

[0052] In this embodiment, if Figure 1 The structure diagram of a system for identifying the direction of incoming waves of a section broken track is as follows: Figure 1 As shown, taking section 1 and section 2 as an example, when θ is -90°, it means that the signal of node track 1 is sent. θ When it is 90°, it means that the incoming wave is the signal sent by send 2.

[0053] See also Figure 4 , Figure 4 The third is a flow chart of a method for identifying the direction of incoming waves of a section broken track provided by the present invention. Figure 4 As shown, the method includes: S31. The first receiving matrix and the second receiving matrix form an initial matrix, and generate a covariance matrix of the initial matrix.

[0054] In this embodiment, after the first receiving matrix and the second receiving matrix are obtained to form an initial matrix, a covariance matrix of the initial matrix is ​​generated.

[0055] Specifically, ; Wherein, R is the covariance matrix, the dimension of the covariance matrix is ​​N*N, N used in this embodiment is the number of receiving matrices, X For x (t) and x (t) is a matrix with dimension N×K, where H is the transposed symbol.

[0056] S32. The eigenvectors obtained according to the covariance matrix form a signal subspace, and the angle between the incoming wave direction and the vertical direction is obtained through the distance between the two receiving sensors.

[0057] In this embodiment, after obtaining the covariance matrix of the initial matrix, the covariance matrix is ​​subjected to eigenvalue decomposition to decompose into N The eigenvalues ​​and N eigenvectors, with eigenvalues ​​arranged from large to small, are recorded as λ and λ The corresponding eigenvector is denoted as q and q Take the eigenvectors corresponding to the M largest eigenvalues ​​to form the signal subspace U , where U =q .

[0058] In this embodiment, the signal subspace U is taken The first N-1 rows and the last N-1 rows of form two new signal subspaces U and U . Using two new signal subspaces U and U , use the least squares method to solve the characteristic relationship matrix of two new signal subspaces .

[0059] Specifically, ; Where T is the transpose of the matrix.

[0060] In this embodiment, after obtaining the characteristic relationship matrix, the number of incoming waves collected by receiving sensor 1 and receiving sensor 2 is obtained, and the characteristic relationship matrix is ​​subjected to eigenvalue decomposition to obtain the same number of eigenvalues ​​as the number of incoming waves, thereby obtaining the angle between the incoming wave direction and the vertical direction.

[0061] Specifically, ; Among them, θ is the angle between the incoming wave direction and the vertical direction, λ is the wavelength, d is the distance between sensor 1 and sensor 2, z is the characteristic value.

[0062] In this embodiment, the acoustic wave signal may be transmitted as follows: the transmission signal of the transmitting node is a 5-cycle sine signal modulated by a 35kHz Hanning window, with a wave speed of c=3008 m / s and a wavelength of λ=c / f=0.1 m. The arrangement distance between the two sensors is d=λ / 2.

[0063] S33. Obtain the incoming wave direction according to the angle between the incoming wave direction and the vertical direction.

[0064] In this embodiment, after obtaining the angle between the incoming wave direction and the vertical direction, the incoming wave direction is determined. When the sending node 1 sends a signal, the angle is around -90°, and when the sending node 2 sends a signal, the signal angle is around 90°.

[0065] like Figure 7 As shown, an embodiment of the present invention provides an electronic device, including a processor 1110, a communication interface 1120, a memory 1130 and a communication bus 1140, wherein the processor 1110, the communication interface 1120, and the memory 1130 communicate with each other through the communication bus 1140; Memory 1130, used for storing computer programs; The processor 1110 is configured to implement any of the above determination methods when executing a program stored in the memory 1130 .

[0066] In the electronic device provided by the embodiment of the present invention, the processor 1110 obtains the fluid flow rate of each branch in different switching states by executing the program stored in the memory 1130, and determines the initial volume flow rate of each branch; corrects the initial volume flow rate according to the pipeline parameters and fluid parameters of each branch when it is in working condition and standard condition, and obtains the standard condition volume flow rate of each branch; obtains multiple total standard condition volume flow rates according to the standard condition volume flow rates of each branch in different switching states, and determines the optimal switching state of each branch through the switching state of each branch when the total standard condition volume flow rate reaches a preset target.

[0067] The communication bus 1140 mentioned in the above electronic device can be a Peripheral Component Interconnect (PCI) bus or an Extended Industry Standard Architecture (EISA) bus, etc. The communication bus 1140 can be divided into an address bus, a data bus, a control bus, etc. For ease of representation, only one thick line is used in the figure, but it does not mean that there is only one bus or one type of bus.

[0068] The communication interface 1120 is used for communication between the above electronic device and other devices.

[0069] The memory 1130 may include a random access memory 1130 (RAM), or may include a non-volatile memory 1130 (non-volatile memory), such as at least one disk memory 1130. Optionally, the memory 1130 may also be at least one storage device located away from the processor 1110.

[0070] The above-mentioned processor 1110 can be a general-purpose processor 1110, including a central processing unit 1110 (CPU), a network processor 1110 (NP), etc.; it can also be a digital signal processor 1110 (DSP), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components.

[0071] An embodiment of the present invention provides a computer-readable storage medium, which stores one or more programs. The one or more programs can be executed by one or more processors 1110 to implement the determination method of any of the above embodiments.

[0072] In the above embodiments, it can be implemented in whole or in part by software, hardware, firmware or any combination thereof. When implemented using software, it can be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, the process or function according to the embodiment of the present invention is generated in whole or in part. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions can be stored in a computer-readable storage medium, or transmitted from one computer-readable storage medium to another computer-readable storage medium. For example, the computer instructions can be transmitted from a website site, a computer, a server or a data center by wired (e.g., coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) mode to another website site, computer, server or data center. The computer-readable storage medium can be any available medium that a computer can access or a data storage device such as a server or a data center that includes one or more available media integrated. The available medium can be a magnetic medium (e.g., a floppy disk, a hard disk, a tape), an optical medium (e.g., a DVD), or a semiconductor medium (e.g., a solid-state hard disk SolidStateDisk (SSD)), etc.

[0073] Although the present disclosure has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present disclosure.

Claims

1. A method for identifying the direction of incoming waves of a section track break, characterized in that: Signal wave sending nodes and signal wave receiving nodes are sequentially arranged at intervals along the rail direction; the signal wave sending node is provided with an on-rail sending sensor, and the signal wave receiving node is provided with two on-rail receiving sensors; The method comprises: The sending sensor sends a signal according to the system configuration; The two receiving sensors collect the signals to obtain a first receiving matrix and a second receiving matrix respectively; Based on the first receiving matrix and the second receiving matrix, the incoming wave direction is calculated by using the matrix space rotation invariance characteristic.

2. The identification method according to claim 1, characterized in that: The sending sensor sends a signal according to the system configuration, including: The signal is set to be a sine wave modulation signal with a preset transmission interval and a preset center frequency.

3. The identification method according to claim 2, characterized in that: The two receiving sensors collect the signals to obtain a first receiving matrix and a second receiving matrix respectively, including: When a signal with a preset center frequency is collected, the signal with the preset center frequency is sorted to obtain signal data; The signal data obtained by the receiving sensor is set in a matrix corresponding to the receiving sensor to obtain a first receiving matrix and a second receiving matrix.

4. The identification method according to claim 3, characterized in that: The method of calculating the incoming wave direction by using the matrix space rotation invariant characteristic includes: The first receiving matrix and the second receiving matrix form an initial matrix, and generate a covariance matrix of the initial matrix; The eigenvectors obtained according to the covariance matrix form a signal subspace, and the angle between the incoming wave direction and the vertical direction is obtained through the distance between the two receiving sensors; The incoming wave direction is obtained according to the angle between the incoming wave direction and the vertical direction.

5. A system for identifying the direction of incoming waves of broken rails in an interval, characterized in that: The system comprises: a transmitting sensor, a receiving sensor, a control platform and a trackside unit; The sending sensor is used to send a signal according to the system configuration; The receiving sensor is used to collect the signal; The control platform collects the signals through the two receiving sensors to obtain a first receiving matrix and a second receiving matrix respectively, and calculates the incoming wave direction based on the first receiving matrix and the second receiving matrix through the matrix space rotation invariance characteristic; The trackside unit is used to transmit the collected signals to the control platform and drive the sending sensor and receiving sensor to work.

6. The identification system according to claim 5, characterized in that: include: The sending sensor is also used to set the signal to be a sinusoidal wave modulated signal with a preset sending interval and a preset center frequency.

7. The identification system according to claim 6, characterized in that: include: The control platform is also used for collecting a signal of a preset center frequency, the signal of the preset center frequency is sent to the control platform through the trackside unit, and the control platform organizes the signal of the preset center frequency to obtain signal data; The control platform is also used to set the signal data obtained by the receiving sensor into a matrix corresponding to the receiving sensor to obtain a first receiving matrix and a second receiving matrix.

8. The identification system according to claim 7, characterized in that: include: The control platform is also used to form an initial matrix with the first receiving matrix and the second receiving matrix, and generate a covariance matrix of the initial matrix; The control platform is also used to form a signal subspace according to the eigenvectors obtained from the covariance matrix, and obtain the angle between the incoming wave direction and the vertical direction through the distance between the two receiving sensors; The control platform is also used to obtain the incoming wave direction according to the angle between the incoming wave direction and the vertical direction.

9. An electronic device, characterized in that: include: processor; and a memory storing computer executable instructions which, when executed, cause the processor to perform the method according to any one of claims 1 to 4.

10. A computer storage medium, characterized in that: in, The computer storage medium stores one or more programs, and when the one or more programs are executed by a processor, the method according to any one of claims 1 to 4 is implemented.

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