Wire arrangement excitation eddy current detection method and device for copper cable wire breakage

Abstract

The invention discloses a wire arrangement excitation eddy current detection method and device for copper cable wire breakage, and the method comprises the steps: carrying out the attaching scanning of a detection probe along the axial direction of a copper cable wire, and the detection probe comprises a flexible wire arrangement coil as an eddy current detection probe excitation assembly, and a differential vertical coil as an eddy current detection probe receiving assembly; after receiving sine alternating current excitation sent by a signal generator in the signal system device, the eddy current detection probe excitation assembly excites the surface of the copper cable to form an eddy current field; and the eddy current detection probe receiving assembly feeds the received induced current formed by the eddy current field back to the upper computer.

Description

Technical Field

[0001] The present application relates to the field of electromagnetic nondestructive testing, and more specifically, to a wire arrangement excited eddy current detection method and device for broken wires in copper cables. Background Art

[0002] Copper cables are key components for power transmission and connection of important electrical equipment in ordinary electric locomotives and EMU trains. The stability and reliability of their internal transmission are crucial. During the operation of the locomotive, the cable and the locomotive are constantly squeezed and worn near the connection. Under long-term operation, the copper wire inside the cable will wear and break, causing its power transmission performance to continue to decline, affecting the normal operation of the locomotive.

[0003] Eddy current testing is one of the most widely used non-destructive testing methods and is used to detect defects in various conductive materials. At present, due to the complexity of the internal structure and composition of locomotive cables and the thick insulation layer, the detection of internal copper wires is still a method of manually disassembling and using a multimeter to test whether the two ends of the cable are conductive. This method not only consumes a lot of manpower and time, but also cannot effectively detect when the copper wires inside the cable are entangled with each other, affecting the safety and reliability of locomotive operation. Summary of the invention

[0004] In response to at least one defect or improvement need in the prior art, the present invention provides a wire-arrangement excitation eddy current detection method and device for broken wires in copper cables. A differential vertical coil is used as an eddy current receiving component, which can improve the spatial resolution of broken wires while eliminating common-mode signal and background noise interference. An iron core with a magnetic focusing effect is placed inside the differential vertical coil to enhance the sensitivity of the induced magnetic field and reduce the impact of detection lift-off.

[0005] To achieve the above-mentioned purpose, according to the first aspect of the present invention, a wire-trapping excitation eddy current detection method for broken wires in copper cables is provided, the method comprising: scanning the copper cable axially by means of a detection probe, wherein the detection probe comprises a flexible wire-trapping coil as an eddy current detection probe excitation component and a differential stand-alone coil as an eddy current detection probe receiving component; after the eddy current detection probe excitation component receives the sinusoidal AC excitation sent by the signal generator in the signal system device, it excites the surface of the copper cable to form an eddy current field; the eddy current detection probe receiving component feeds back the induced current formed by the eddy current field received to the host computer.

[0006] In an exemplary embodiment, the flexible cable coil included in the detection probe is a planar runway cable, and the differential vertical coil in the eddy current detection probe receiving assembly includes two vertical coils, wherein the first vertical coil of the two vertical coils is placed at the center position of the flexible cable coil loop, and the second vertical coil of the two vertical coils is placed at the cable arrangement position of the flexible cable coil, and the distance between the first vertical coil and the second vertical coil is equal to the thickness of the rubber insulation layer of the copper cable.

[0007] In an exemplary embodiment, the differential vertical coil includes two vertical coils for differential reception, and an iron core for magnetic field concentration is disposed inside the two vertical coils.

[0008] In an exemplary embodiment, the eddy current detection probe receiving component feeds back the induced current formed by the eddy current field to the host computer, including: the eddy current detection probe receiving component converts the received induced current into a digital signal and feeds it back to the host computer; the host computer processes the received digital signal and displays the detection signal.

[0009] In an exemplary embodiment, after the detection probe is attached and scanned along the axial direction of the copper cable, the method further includes: when the detection probe scans and finds defects in the copper cable, the eddy current field formed on the surface of the copper cable is distorted; the eddy current detection probe receiving component receives the induced current formed by the distorted eddy current field and converts it into a target digital signal and feeds it back to the host computer; the host computer processes the received target digital signal and displays the target detection signal, wherein the target detection signal includes a broken wire detection signal.

[0010] In an exemplary embodiment, the sinusoidal AC excitation sent by the signal generator in the signal system device is a high-frequency sinusoidal AC excitation above 100 kHz.

[0011] According to the second aspect of the present invention, there is also provided a wire-trapping excited eddy current detection device for broken wires in a copper cable, which comprises: a scanning unit, used for attaching and scanning the copper cable along the axial direction through a detection probe, wherein the detection probe comprises a flexible wire-trapping coil as an eddy current detection probe excitation component and a differential stand-alone coil as an eddy current detection probe receiving component; a receiving unit, used for exciting the surface of the copper cable to form an eddy current field after the eddy current detection probe excitation component receives the sinusoidal AC excitation sent by the signal generator in the signal system device; and a feedback unit, used for the eddy current detection probe receiving component to feed back the induced current formed by the eddy current field received to a host computer.

[0012] According to a third aspect of the present invention, a computer-readable storage medium is provided, in which a computer program is stored, wherein the computer program is configured to execute the above-mentioned wire arrangement excited eddy current detection method for broken wires in copper cables when running.

[0013] According to a fourth aspect of the present invention, there is also provided an electronic device comprising a memory, a processor and a computer program stored in the memory and executable on the processor, wherein the processor executes the above-mentioned wire arrangement excited eddy current detection method for broken wires in copper cables through the computer program.

[0014] In general, the above technical solutions conceived by the present invention can achieve the following beneficial effects compared with the prior art:

[0015] (1) The present invention provides a wire arrangement excitation eddy current detection method for broken wires in copper cables. A flexible wire arrangement coil prepared by a flexible printed circuit process is used as an eddy current excitation component. The method has the advantages of flexibility and lightness, and can achieve close fit between the detection probe and the copper cable to avoid detection jitter. In addition, the wire arrangement coil allows the application of high-frequency sinusoidal excitation to greatly increase the eddy current field strength near the surface of the copper wire. Under high-frequency sinusoidal excitation, the skin effect makes the eddy current field more concentrated, thereby enhancing the eddy current field on the surface of each copper wire inside the cable, and realizing the detection of broken wires in the copper cable under large lift-off.

[0016] (2) The present invention uses a differential vertical coil as an eddy current receiving component to improve the spatial resolution of copper broken wires while eliminating common mode signal and background noise interference; an iron core with a magnetic field concentration effect is placed inside the differential vertical coil to enhance the sensitivity of the induced magnetic field at the receiving point, further reducing the lift-off effect. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0018] Figure 1 A schematic flow chart of an optional wire arrangement excitation eddy current detection method for broken wires in copper cables provided in an embodiment of the present application;

[0019] Figure 2 A cross-sectional view of an optional copper cable provided in an embodiment of the present application;

[0020] Figure 3 A schematic diagram of an optional wire arrangement excitation eddy current detection method for broken wires in copper cables provided in an embodiment of the present application;

[0021] Figure 4 A top view of the layout of the probe excitation and receiving components of an optional wire arrangement excitation eddy current detection method for broken wires of copper cables provided in an embodiment of the present application;

[0022] Figure 5 A comparison chart of experimental results of an optional wire arrangement excitation eddy current detection of broken wires in copper cables provided in an embodiment of the present application;

[0023] Figure 6 A detection principle diagram of an optional wire arrangement excitation eddy current detection method for broken wires in copper cables provided in an embodiment of the present application;

[0024] Figure 7 A schematic structural diagram of an optional wire arrangement excitation eddy current detection device for broken copper cable provided in an embodiment of the present application;

[0025] Figure 8 A schematic diagram of the structure of an optional electronic device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0027] The terms "first", "second", "third", etc. in the specification and claims of this application and the above-mentioned drawings are used to distinguish different objects, rather than to describe a specific order. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of steps or units is not limited to the listed steps or units, but optionally includes steps or units that are not listed, or optionally includes other steps or units inherent to these processes, methods, products or devices.

[0028] According to one aspect of the embodiments of the present application, a wire arrangement excitation eddy current detection method for broken wires in copper cables is provided. Figure 1 The present invention provides a wire arrangement induced eddy current detection method for broken wires in copper cables.

[0029] Figure 1 : is a schematic diagram of a flow chart of an optional wire arrangement excitation eddy current detection method for broken wires of copper cables provided in an embodiment of the present application, such as Figure 1 As shown, the process of the method may include the following steps:

[0030] S102, performing an attached scan along the axial direction of the copper cable by using a detection probe, wherein the detection probe includes a flexible cable coil as an eddy current detection probe excitation component and a differential vertical coil as an eddy current detection probe receiving component;

[0031] S104, after the eddy current detection probe excitation component receives the sinusoidal AC excitation sent by the signal generator in the signal system device, it excites the surface of the copper cable to form an eddy current field;

[0032] S106, the eddy current detection probe receiving component feeds back the induced current formed by the eddy current field received to the host computer.

[0033] The wire-trapping excited eddy current detection method for broken wires in copper cables provided in the present application can be applied to the scenario of non-destructive testing of copper cables. When wear or broken wires are detected in the copper cable, the eddy current field under sinusoidal AC excitation will be distorted. A detection probe is used for detection and the results are fed back to the host computer, and the detection signal displayed in the host computer will also change accordingly.

[0034] For example, Figure 2 A cross-sectional view of an optional copper cable provided in an embodiment of the present application, such as Figure 2 As shown, the outer layer of the copper cable is composed of two layers of small copper wires, each of which is twisted with 48 copper wires with a diameter of 0.18 mm and 3 reinforcing steel wires with a diameter of 0.25 mm, and is isolated from the outside world by 6.5 mm thick insulating rubber. The detection target in this embodiment may be a single strand of outermost copper wire, and 1 / 3 of the copper wire is artificially broken. Therefore, this embodiment needs to realize the detection of broken wires in copper cables under a lift-off of 6.5 mm. The lift-off here refers to the lift-off effect, which describes the phenomenon that a changing electromagnetic field acts near a conductor and generates eddy currents in the conductor, and can be used to measure the thickness of a metal surface coating or an insulating covering (for example, the lift-off value of the terminal in this embodiment is 6.5 mm).

[0035] Figure 3 A schematic diagram of an optional wire arrangement excitation eddy current detection method for broken wires of copper cables provided in an embodiment of the present application, such as Figure 3 As shown, when performing nondestructive testing on copper cables, the detection probe can be attached and scanned along the axial direction of the copper cable. Optionally, the detection probe includes an eddy current detection probe excitation component and an eddy current detection probe receiving component. A flexible cable coil can be used as an eddy current detection probe excitation component, and a differential vertical coil can be used as an eddy current detection probe receiving component. The flexible cable coil in this embodiment can be a flat runway cable. The flexible cable coil is prepared by a flexible printed circuit process and has the advantages of flexibility and lightness, so that the detection probe can be closely fitted to the copper cable to avoid detection jitter.

[0036] The eddy current detection probe excitation component can receive the sinusoidal AC excitation sent by the signal generator in the signal system device. Under the sinusoidal AC excitation, an eddy current field is formed on the surface of the copper cable under inspection. The eddy current detection probe receiving component can receive the induced current formed by the eddy current field on the surface of the copper cable and feed the induced current back to the host computer.

[0037] Through the above steps S102 to S106, the detection probe is attached and scanned along the axial direction of the copper cable, wherein the detection probe includes a flexible cable coil as an eddy current detection probe excitation component and a differential vertical coil as an eddy current detection probe receiving component; after the eddy current detection probe excitation component receives the sinusoidal AC excitation sent by the signal generator in the signal system device, it excites the surface of the copper cable to form an eddy current field; the eddy current detection probe receiving component feeds back the induced current formed by the received eddy current field to the host computer, and the differential vertical coil is used as the eddy current receiving component, which can improve the spatial resolution of broken wires while eliminating the interference of common mode signals and background noise, and place a magnetic core inside the differential vertical coil to enhance the sensitivity of the induced magnetic field and reduce the impact of detection lift-off.

[0038] In an exemplary embodiment, the flexible cable coil included in the detection probe is a planar runway cable, and the differential vertical coil in the eddy current detection probe receiving assembly includes two vertical coils, wherein the first vertical coil of the two vertical coils is placed at the center position of the flexible cable coil loop, and the second vertical coil of the two vertical coils is placed at the cable arrangement position of the flexible cable coil, and the distance between the first vertical coil and the second vertical coil is equal to the thickness of the rubber insulation layer of the copper cable.

[0039] In this embodiment, Figure 4 A top view of the layout of the probe excitation and receiving components of an optional wire arrangement excitation eddy current detection method for broken copper cable provided in an embodiment of the present application, such as Figure 4 As shown, the flexible cable coil included in the detection probe is a flat runway cable, and the differential vertical coil in the eddy current detection probe receiving assembly includes two vertical coils. The first vertical coil of the two vertical coils is placed at the center position of the flexible cable coil loop, and the second vertical coil of the two vertical coils is placed at the cable arrangement position of the flexible cable coil. The distance between the first vertical coil and the second vertical coil is equal to the thickness of the rubber insulation layer of the copper cable, that is, the lift-off value when detecting the copper wire inside the cable (for example, 6.5mm).

[0040] Through this embodiment, the flexible cable coil has low inductance, and the skin effect makes the eddy current field more concentrated, thereby enhancing the eddy current field on the surface of each copper wire inside the cable. A vertical coil is used to sense the magnetic field changes generated by the eddy current, thereby improving the spatial resolution of broken wires in the copper cable.

[0041] In an exemplary embodiment, the differential vertical coil includes two vertical coils for differential reception, and an iron core for magnetic concentration is disposed inside the two vertical coils.

[0042] In this embodiment, Figure 5 Performing differential reception for the two vertical coils can reduce interference from common mode signals and background noise. Furthermore, an iron core with a magnetic field concentration effect is placed inside the differential vertical coil to enhance the sensitivity of the induced magnetic field at the receiving end and reduce the influence of the lift-off effect.

[0043] In an exemplary embodiment, the eddy current detection probe receiving component feeds back the induced current formed by the eddy current field received to the host computer, including:

[0044] S31, the eddy current detection probe receiving component converts the received induced current into a digital signal and feeds it back to the host computer;

[0045] S32, the host computer processes the received digital signal and then displays the detection signal.

[0046] In this embodiment, the eddy current detection probe receiving component can receive the induced current formed by the eddy current field, and convert the induced current into a digital signal and feed it back to the host computer. After receiving the digital signal, the host computer can process the digital signal and display the detection signal.

[0047] Figure 5 A comparison chart of experimental results of an optional wire arrangement excitation eddy current detection of broken wires in copper cables provided in an embodiment of the present application, such as Figure 5 As shown, when the copper cable under test has no broken wires, the no-broken-wire detection signal waveform displayed by the host computer has no obvious change.

[0048] Through this embodiment, the detection signal is fed back to the host computer for intuitive display, which can facilitate the detection of defects in the copper cable.

[0049] In an exemplary embodiment, after the detection probe is used to perform an attachment scan along the axial direction of the copper cable, the method further includes:

[0050] S41, when the detection probe scans and finds that the copper cable has defects, the eddy current field formed on the surface of the copper cable is distorted;

[0051] S42, the eddy current detection probe receiving component receives the induced current formed by the distorted eddy current field, converts it into a target digital signal and feeds it back to the host computer;

[0052] S43, the host computer processes the received target digital signal and displays the target detection signal, wherein the target detection signal includes a broken wire detection signal.

[0053] In this embodiment, Figure 5 A comparison chart of experimental results of an optional wire arrangement excitation eddy current detection of broken wires in copper cables provided in an embodiment of the present application, such as Figure 5 As shown, after the detection probe is attached and scanned along the axial direction of the copper cable, if the detection probe scans the copper cable and finds defects in the copper cable, the eddy current field formed on the surface of the copper cable will be distorted. The eddy current detection probe receiving component can convert the induced current formed by the distorted eddy current field received into a target digital signal and feed it back to the host computer. The host computer processes the received target digital signal and displays the target detection signal. Here, the target detection signal includes a broken wire detection signal.

[0054] In the results displayed by the host computer, the broken wire detection signal waveform of the defective copper cable shows periodic distortion, while the no-broken wire detection signal waveform fed back to the host computer by the copper cable without broken wire defects is relatively stable and undistorted. There is obvious signal change at the position with broken copper wire, and there is almost no background noise interference, while there is no obvious signal change at the position without broken wire.

[0055] Through this embodiment, the detection of broken copper wires with high sensitivity, high signal-to-noise ratio and strong stability under large lift-off can be achieved.

[0056] In an exemplary embodiment, the sinusoidal AC excitation sent by the signal generator in the signal system device is a high-frequency sinusoidal AC excitation above 100 kHz.

[0057] In this embodiment, combined with Figure 3 and Figure 6 As shown in the figure, the flexible cable coil has low inductance, which allows the application of high-frequency sinusoidal excitation above 100kHz. Under this high-frequency excitation, the skin effect makes the eddy current field more concentrated, thereby enhancing the eddy current field on the surface of each copper wire inside the cable. The skin depth δ can be calculated by the following formula:

[0058]

[0059] Where f is the sinusoidal AC excitation frequency, μ is the magnetic permeability, and σ is the electrical conductivity.

[0060] Furthermore, the electrical conductivity of copper is σ = 5.7×10 7 Sm, magnetic permeability μ=μ0·μ r ,μ0=4π×10 -7 H·m -1 is the vacuum permeability (the permeability of air is approximately equal to the vacuum permeability), μ r is the relative magnetic permeability. The relative magnetic permeability of non-ferromagnetic materials such as copper is μ r ≈1, from which the skin depth of copper can be further simplified as:

[0061]

[0062] The detection probe can be used to perform attached detection on the cable. During the detection, the signal generator inside the signal system device sends a sinusoidal AC excitation with a frequency of 150kHz and a voltage of 6V to the flexible cable coil. From the simplified formula for calculating the skin depth of copper, it can be seen that when the excitation frequency is 150kHz, the skin depth is about 0.17mm, which is smaller than the diameter of a single copper wire. The eddy current field is concentrated near the surface of the copper wire, thereby enhancing the eddy current field on the surface of the copper wire.

[0063] Through this embodiment, a flexible cable coil prepared by a flexible printed circuit process is used as an eddy current excitation component, which has the advantages of flexibility and lightness, and can achieve close fit between the detection probe and the copper cable to avoid detection jitter; in addition, the high-frequency sinusoidal excitation allowed by the cable coil greatly increases the eddy current field strength near the surface of the copper wire. Under high-frequency sinusoidal excitation, the skin effect makes the eddy current field more concentrated, and the eddy current field on the surface of each copper wire inside the cable is enhanced, realizing the detection of broken wires in the copper cable under large lift-off. Using a differential vertical coil as an eddy current receiving component improves the spatial resolution of broken copper wires while eliminating common-mode signal and background noise interference; an iron core with a magnetic field gathering effect is placed inside the differential vertical coil to enhance the sensitivity of the induced magnetic field at the receiving end and further reduce the lift-off effect.

[0064] According to another aspect of the embodiments of the present application, there is also provided a wire arrangement induced eddy current detection device for implementing the wire arrangement induced eddy current detection method for broken wires in copper cables. Figure 7 is a schematic structural diagram of an optional wire arrangement excitation eddy current detection device for broken wires of copper cables according to an embodiment of the present application, such as Figure 7 As shown, the device may include:

[0065] The scanning unit 702 is used to perform attachment scanning along the axial direction of the copper cable through a detection probe, wherein the detection probe includes a flexible cable coil as an eddy current detection probe excitation component and a differential stand-alone coil as an eddy current detection probe receiving component;

[0066] The receiving unit 704 is used for the eddy current detection probe excitation component to excite the surface of the copper cable to form an eddy current field after receiving the sinusoidal AC excitation sent by the signal generator in the signal system device;

[0067] Feedback unit 706 is used for the eddy current detection probe receiving component to feed back the induced current formed by the eddy current field received to the host computer.

[0068] It should be noted that the scanning unit 702 in this embodiment can be used to execute the above step S102, the receiving unit 704 in this embodiment can be used to execute the above step S104, and the feedback unit 706 in this embodiment can be used to execute the above step S106.

[0069] Through the above module, the detection probe is attached and scanned along the axial direction of the copper cable, wherein the detection probe includes a flexible cable coil as an eddy current detection probe excitation component and a differential vertical coil as an eddy current detection probe receiving component; after the eddy current detection probe excitation component receives the sinusoidal AC excitation sent by the signal generator in the signal system device, it excites the surface of the copper cable to form an eddy current field; the eddy current detection probe receiving component feeds back the induced current formed by the received eddy current field to the host computer, and the differential vertical coil is used as the eddy current receiving component, which can improve the spatial resolution of broken wires while eliminating the interference of common mode signals and background noise, and place a magnetic core inside the differential vertical coil to enhance the sensitivity of the induced magnetic field and reduce the impact of detection lift-off.

[0070] In an exemplary embodiment, the flexible cable coil included in the detection probe is a planar runway cable, and the differential vertical coil in the eddy current detection probe receiving assembly includes two vertical coils, wherein the first vertical coil of the two vertical coils is placed at the center position of the flexible cable coil loop, and the second vertical coil of the two vertical coils is placed at the cable arrangement position of the flexible cable coil, and the distance between the first vertical coil and the second vertical coil is equal to the thickness of the rubber insulation layer of the copper cable.

[0071] In an exemplary embodiment, the differential vertical coil includes two vertical coils for differential reception, and an iron core for magnetic field concentration is disposed inside the two vertical coils.

[0072] In an exemplary embodiment, the feedback unit comprises:

[0073] A feedback module, used for the eddy current detection probe receiving component to convert the received induced current into a digital signal and feed it back to the host computer;

[0074] The display module is used for the host computer to process the received digital signal and then display the detection signal.

[0075] In an exemplary embodiment, the apparatus further comprises:

[0076] A distortion unit, used for distorting the eddy current field formed on the surface of the copper cable when the detection probe detects defects in the copper cable;

[0077] A conversion unit, used for converting the induced current formed by the distorted eddy current field received by the eddy current detection probe receiving component into a target digital signal and feeding it back to the host computer;

[0078] The display unit is used for the host computer to display the target detection signal after processing the received target digital signal, wherein the target detection signal includes a broken wire detection signal.

[0079] In an exemplary embodiment, the sinusoidal AC excitation sent by the signal generator in the signal system device is a high-frequency sinusoidal AC excitation above 100 kHz.

[0080] It should be noted here that the examples and scenarios implemented by the above-mentioned modules and corresponding steps are the same, but are not limited to the contents disclosed in the above-mentioned embodiments. It should be noted that the above-mentioned modules as part of the device can run in a hardware environment and can be implemented by software or hardware, wherein the hardware environment includes a network environment.

[0081] According to another aspect of the embodiments of the present application, a storage medium is further provided. Optionally, in this embodiment, the storage medium can be used to execute the program code of any of the above-mentioned copper cable wire broken wire induced eddy current detection methods in the embodiments of the present application.

[0082] Optionally, in this embodiment, the storage medium is configured to store program codes for executing the following steps:

[0083] S1, scanning along the axial direction of the copper cable by using a detection probe, wherein the detection probe includes a flexible cable coil as an eddy current detection probe excitation component and a differential vertical coil as an eddy current detection probe receiving component.

[0084] S2, after the eddy current detection probe excitation component receives the sinusoidal AC excitation sent by the signal generator in the signal system device, it excites the surface of the copper cable to form an eddy current field.

[0085] S3, the eddy current detection probe receiving component feeds back the induced current formed by the eddy current field received to the host computer.

[0086] Optionally, the specific examples in this embodiment may refer to the examples described in the above embodiments, which will not be described in detail in this embodiment.

[0087] Among them, computer-readable storage media may include, but are not limited to, any type of disk, including floppy disks, optical disks, DVDs, CD-ROMs, microdrives and magneto-optical disks, ROMs, RAMs, EPROMs, EEPROMs, DRAMs, VRAMs, flash memory devices, magnetic or optical cards, nanosystems (including molecular memory ICs), or any type of medium or device suitable for storing instructions and / or data.

[0088] According to another aspect of the embodiments of the present application, an electronic device for implementing the above-mentioned wire arrangement excitation eddy current detection method for broken wires in copper cables is also provided. The electronic device may be a server, a terminal, or a combination thereof.

[0089] Figure 8 is a schematic diagram of the structure of an optional electronic device according to an embodiment of the present application, such as Figure 8 As shown, it includes a processor 802, a communication interface 804, a memory 806 and a communication bus 808, wherein the processor 802, the communication interface 804, and the memory 806 communicate with each other through the communication bus 808, wherein:

[0090] Memory 806, used for storing computer programs;

[0091] The processor 802 is used to implement the following steps when executing the computer program stored in the memory 406:

[0092] S1, scanning along the axial direction of the copper cable by using a detection probe, wherein the detection probe includes a flexible cable coil as an eddy current detection probe excitation component and a differential vertical coil as an eddy current detection probe receiving component.

[0093] S2, after the eddy current detection probe excitation component receives the sinusoidal AC excitation sent by the signal generator in the signal system device, it excites the surface of the copper cable to form an eddy current field.

[0094] S3, the eddy current detection probe receiving component feeds back the induced current formed by the eddy current field received to the host computer.

[0095] Optionally, the communication bus may be a PCI (Peripheral Component Interconnect) bus, or an EISA (Extended Industry Standard Architecture) bus, etc. The communication bus may be divided into an address bus, a data bus, a control bus, etc. For ease of representation, Figure 8 The communication interface is used for communication between the electronic device and other devices.

[0096] The memory may include RAM, or may include non-volatile memory, such as at least one disk memory. Optionally, the memory may also be at least one storage device located away from the aforementioned processor.

[0097] As an example, the memory 806 may include, but is not limited to, the scanning unit 702, the receiving unit 704, and the feedback unit 706 in the wire-arranging induced eddy current detection device for broken copper cables. In addition, it may also include, but is not limited to, other module units in the wire-arranging induced eddy current detection device for broken copper cables, which will not be described in detail in this example.

[0098] The above-mentioned processor can be a general-purpose processor, which can include but not be limited to: CPU (Central Processing Unit), NP (Network Processor), etc.; it can also be DSP (Digital Signal Processing), ASIC (Application Specific Integrated Circuit), FPGA (Field-Programmable Gate Array) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components.

[0099] Optionally, the specific examples in this embodiment may refer to the examples described in the above embodiments, and this embodiment will not be described in detail here.

[0100] It should be noted that, for the aforementioned method embodiments, for the sake of simplicity, they are all expressed as a series of action combinations, but those skilled in the art should be aware that the present application is not limited by the described order of actions, because according to the present application, certain steps can be performed in other orders or simultaneously. Secondly, those skilled in the art should also be aware that the embodiments described in the specification are all preferred embodiments, and the actions and modules involved are not necessarily required by the present application.

[0101] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0102] In the several embodiments provided in the present application, it should be understood that the disclosed devices can be implemented in other ways. For example, the device embodiments described above are only schematic, such as the division of the units, which is only a logical function division. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some service interfaces, and the indirect coupling or communication connection of devices or units can be electrical or other forms.

[0103] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0104] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above-mentioned integrated unit may be implemented in the form of hardware or in the form of software functional units.

[0105] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable memory. Based on this understanding, the technical solution of the present application is essentially or the part that contributes to the prior art or all or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a memory, including a number of instructions to enable a computer device (which can be a personal computer, server or network device, etc.) to perform all or part of the steps of the method described in each embodiment of the present application. The aforementioned memory includes: U disk, read-only memory (ROM), random access memory (RAM), mobile hard disk, disk or optical disk and other media that can store program code.

[0106] A person of ordinary skill in the art can understand that all or part of the steps in the various methods of the above embodiments can be completed by instructing related hardware through a program, and the program can be stored in a computer-readable memory, which can include: a flash drive, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk, etc.

[0107] The above is only an exemplary embodiment of the present disclosure, and the scope of the present disclosure cannot be limited thereto. That is, any equivalent changes and modifications made according to the teachings of the present disclosure are still within the scope of the present disclosure. After considering the specification and practicing the disclosure here, those skilled in the art will easily think of the implementation scheme of the present disclosure. This application is intended to cover any modification, use or adaptation of the present disclosure, which follows the general principles of the present disclosure and includes common knowledge or customary technical means in the technical field not recorded in the present disclosure. The description and examples are regarded as exemplary only, and the scope and spirit of the present disclosure are defined by the claims.

[0108] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0109] It will be easily understood by those skilled in the art that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A wire-arranging eddy current detection method for broken copper cables, characterized in that: include: The detection probe is used to perform an attached scan along the axial direction of the copper cable, wherein the detection probe comprises a flexible cable coil as an eddy current detection probe excitation component and a differential vertical coil as an eddy current detection probe receiving component; After the eddy current detection probe excitation component receives the sinusoidal AC excitation sent by the signal generator in the signal system device, it excites the surface of the copper cable to form an eddy current field; The eddy current detection probe receiving component feeds back the induced current formed by the eddy current field received to the host computer.

2. The wire arrangement excitation eddy current detection method for broken wires of copper cables according to claim 1, characterized in that: The flexible cable coil included in the detection probe is a planar runway cable, and the differential vertical coil in the eddy current detection probe receiving component includes two vertical coils, wherein the first vertical coil of the two vertical coils is placed at the center position of the flexible cable coil loop, and the second vertical coil of the two vertical coils is placed at the cable arrangement position of the flexible cable coil, and the distance between the first vertical coil and the second vertical coil is equal to the thickness of the rubber insulation layer of the copper cable.

3. The wire arrangement excitation eddy current detection method for broken wires of copper cables as claimed in claim 2, characterized in that: The differential vertical coil comprises two vertical coils for differential reception, and an iron core for collecting magnetic flux is arranged inside the two vertical coils.

4. The wire arrangement excited eddy current detection method for broken wires of copper cables as claimed in claim 1, characterized in that: The eddy current detection probe receiving component feeds back the induced current formed by the eddy current field received to the host computer, including: The eddy current detection probe receiving component converts the received induced current into a digital signal and feeds it back to the host computer; The host computer processes the received digital signal and then displays the detection signal.

5. The wire arrangement excitation eddy current detection method for broken wires of copper cables according to claim 1, characterized in that: After the detection probe is used to scan along the axial direction of the copper cable, the method further includes: When the detection probe detects defects in the copper cable, the eddy current field formed on the surface of the copper cable is distorted; The eddy current detection probe receiving component receives the induced current formed by the distorted eddy current field, converts it into a target digital signal and feeds it back to the host computer; The host computer processes the received target digital signal and then displays the target detection signal, wherein the target detection signal includes a broken wire detection signal.

6. The wire arrangement excitation eddy current detection method for broken wires of copper cables according to claim 1, characterized in that: The sinusoidal AC excitation sent by the signal generator in the signal system device is a high-frequency sinusoidal AC excitation of more than 100 kHz.

7. A wire-arranging excitation eddy current detection device for broken copper cable, characterized in that: include: A scanning unit, used for attaching and scanning along the axial direction of the copper cable through a detection probe, wherein the detection probe comprises a flexible cable coil as an eddy current detection probe excitation component and a differential stand-alone coil as an eddy current detection probe receiving component; A receiving unit, used for exciting the surface of the copper cable to form an eddy current field after the eddy current detection probe excitation component receives the sinusoidal AC excitation sent by the signal generator in the signal system device; The feedback unit is used for the eddy current detection probe receiving component to feed back the induced current formed by the eddy current field received to the host computer.

8. The wire arrangement excited eddy current detection device for broken wires of copper cables as claimed in claim 7, characterized in that: include: A distortion unit, used for distorting the eddy current field formed on the surface of the copper cable when the detection probe detects defects in the copper cable; A conversion unit, used for converting the induced current formed by the distorted eddy current field received by the eddy current detection probe receiving component into a target digital signal and feeding it back to the host computer; The display unit is used for the host computer to display the target detection signal after processing the received target digital signal, wherein the target detection signal includes a broken wire detection signal.

9. A computer-readable storage medium, characterized in that: The computer-readable storage medium includes a stored program, wherein the program executes the method according to any one of claims 1 to 6 when executed.

10. An electronic device comprising a memory and a processor, characterized in that: A computer program is stored in the memory, and the processor is configured to execute the method according to any one of claims 1 to 6 through the computer program.

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