Online detection device for health state of steel wire rope for traction
By combining online detection devices with constant current and pulse current magnetization technology, comprehensive health monitoring of vehicle-mounted steel wire ropes has been achieved, solving the problems of high detection cost and low efficiency in existing technologies, and improving the accuracy and adaptability of detection.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-02
- Publication Date
- 2026-04-10
AI Technical Summary
Existing technologies struggle to effectively monitor the health status of vehicle-mounted wire ropes online, especially due to the limitations of the testing methods and the high costs and low efficiency caused by the difficulty of disassembly.
An online detection device, including a ring-shaped leakage magnetic field detector, an excitation assembly, and a controller, is used to perform static and transient magnetic field detection by combining constant current and pulse current magnetization and utilizing multiple magnetic induction components, thereby achieving comprehensive monitoring of the wire rope.
It enables online real-time detection of wire ropes, reducing detection costs and time, improving defect detection rate, positioning accuracy and quantitative assessment accuracy, adapting to complex working conditions, and ensuring the safety of large special vehicles.
Smart Images
Figure CN121830893A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present disclosure relates to the field of detection. More particularly, it relates to a traction steel wire rope health state online detection device. BACKGROUND
[0002] At present, large special vehicles have the functions of road clearing, emergency traction, and towing, etc. Steel wire rope is the core component for connecting the towing target and transmitting traction force. In the operation process of the vehicle-mounted winch, the steel wire rope may be worn, corroded, fatigued, or over-limited, resulting in broken wires, loose ropes, and even breakage, thereby causing serious safety accidents. The high-strength steel wire inside the steel wire rope is a ferromagnetic material, generally made of 65Mn high-carbon steel, and the steel wire diameter is 0.2mm~5mm. Common damage conditions of the steel wire rope include defects, broken wires, twisted deformation and bending, and fatigue damage. At present, the defect detection of the steel wire rope mainly includes visual detection method, eddy current detection method, ultrasonic guided wave detection method, modal detection method, and magnetic flux leakage detection method, etc. In actual use, the visual detection can only detect the surface steel wire defects, the penetration depth of the eddy current detection can only reach the near surface, the energy attenuation of the ultrasonic detection is serious, and the noise is large, so it is difficult to effectively identify the defect position and size, and the positioning accuracy of the modal detection on the defects is low. The above methods are difficult to effectively detect and evaluate the health state of the vehicle-mounted steel wire rope.
[0003] During the magnetization of the steel wire rope, the magnetic permeability of the defect position and the health position is quite different, so that the magnetic lines of force are distorted to form a magnetic leakage field at the defect, and the magnetic field is easily captured by the magnetic sensitive element to analyze the defect information. The sensor made by the magnetic flux leakage detection principle can detect the surface defects and internal defects of the steel wire rope. At present, the magnetic flux leakage method is used for offline detection, and the installation mode of the vehicle-mounted steel wire rope is generally complex and difficult to disassemble, so the offline detection cost is high. SUMMARY
[0004] The present disclosure aims to provide a traction steel wire rope health state online detection device for accurately detecting the health state of the steel wire rope to be detected, so as to solve at least one of the problems existing in the prior art.
[0005] To achieve the above-mentioned purpose, the present disclosure adopts the following technical solutions: The present disclosure provides a traction steel wire rope health state online detection device in the first aspect, comprising: The online detection device is installed on the vehicle, comprising: a ring-shaped magnetic flux leakage detection piece, an excitation assembly, and a controller; The ring-shaped magnetic flux leakage detection piece comprises a ring-shaped support sleeved outside the steel wire rope to be detected, a plurality of magnetic induction assemblies uniformly fixed on the ring-shaped support, and an acquisition module; The controller is used to control the excitation assembly to magnetize the steel wire rope to be detected by constant current and pulse current respectively. The plurality of magnetic induction components are further configured to, after the excitation component completes the constant current magnetization or the pulse current magnetization on the steel wire rope to be tested, detect the steel wire rope to be tested in response to the user pulling out the steel wire rope to be tested from the installation device or in response to the user retracting the steel wire rope to be tested from the installation device, and detect the static magnetic field of different positions of the circumferential direction of the steel wire rope to be tested in response to the constant current magnetization of the steel wire rope to be tested or detect the transient magnetic field of different positions of the circumferential direction of the steel wire rope to be tested in response to the pulse current magnetization of the steel wire rope to be tested. The acquisition module is configured to acquire static magnetic field detection data of the plurality of magnetic induction components and send the static magnetic field detection data to the controller to obtain static leakage magnetic field results, and acquire transient magnetic field detection data of the plurality of magnetic induction components and send the transient magnetic field detection data to the controller to obtain transient leakage magnetic field results.
[0006] Optionally, the magnetic induction component includes a Hall element for static magnetic field detection and a magnetic induction coil for transient magnetic field detection.
[0007] Optionally, the Hall element is selected from an EQ-730L type Hall element.
[0008] Optionally, the excitation component includes an excitation coil, a first driving module, and a second driving module. The controller is configured to control the first driving module to output a constant current signal to drive the excitation coil to magnetize the steel wire rope to be tested with constant current, and control the second driving module to output a pulse current signal to drive the excitation coil to magnetize the steel wire rope to be tested with pulse current.
[0009] Optionally, the excitation coil is selected from a Helmholtz coil.
[0010] Optionally, the excitation component further includes a second communication module. The controller is configured to control the first driving module to output a constant current signal to drive the excitation coil to magnetize the steel wire rope to be tested with constant current via the second communication module, and control the second driving module to output a pulse current signal to drive the excitation coil to magnetize the steel wire rope to be tested with pulse current via the second communication module.
[0011] Optionally, the health status online detection device further includes a first communication module. The controller is configured to send the static leakage magnetic field results and the transient leakage magnetic field results to an external terminal via the first communication module.
[0012] Optionally, the first communication module and the second communication module are wireless communication modules.
[0013] Optionally, the controller is selected from a host computer.
[0014] Optionally, the number of magnetic induction components is greater than or equal to 32.
[0015] The beneficial effects of this disclosure are as follows: The online testing device of this invention is installed on a vehicle, allowing users to test steel wire ropes anytime, anywhere. Multiple magnetic induction components, after magnetizing the steel wire rope under test, respond to the user's actions of pulling the rope out of the installation device or retracting it. This invention enables real-time online testing of the steel wire rope without disassembly, significantly reducing testing costs and time while providing convenient testing.
[0016] By combining constant current magnetization and pulsed current magnetization, this device can detect the surface of the steel wire rope under test through static leakage magnetic field and detect its internal damage through transient electromagnetic response in a single scan. This enables a comprehensive diagnosis of the steel wire rope under test from surface to interior, from current condition to potential risks. This invention can complete online real-time monitoring without disassembly, which greatly reduces detection costs and time.
[0017] Multiple magnetic induction components evenly arranged on the ring-shaped support can simultaneously collect magnetic field data of the entire circumference of the steel wire rope under test. Combined with axial movement scanning, a complete two-dimensional or three-dimensional magnetic field map of the surface of the steel wire rope under test can be obtained. This fundamentally avoids the problem of a single sensor potentially missing local defects, and significantly improves the defect detection rate, positioning accuracy, and quantitative assessment accuracy. Furthermore, this invention features a compact structure and is specifically designed for complex working conditions such as vehicle-mounted applications. It automatically controls the magnetization, scanning, and data acquisition processes through a controller, making it easy to operate, highly resistant to interference, and adaptable to harsh environments such as vibration and oil contamination. It provides an efficient and reliable real-time monitoring method to ensure the operational safety of large special vehicles. Attached Figure Description
[0018] The specific embodiments of this disclosure will be described in further detail below with reference to the accompanying drawings.
[0019] Figure 1 A schematic diagram of an online health status detection device for traction wire ropes according to an embodiment of this disclosure is shown.
[0020] Figure 2 A schematic diagram of the structure of a magnetic induction component according to an embodiment of the present disclosure is shown.
[0021] Figure 3 A schematic diagram of the structure of the steel wire rope under test and the ring support is shown in one embodiment of this disclosure. Detailed Implementation
[0022] To more clearly illustrate this disclosure, the following description, in conjunction with embodiments and accompanying drawings, provides further insight. Similar components in the drawings are indicated by the same reference numerals. Those skilled in the art should understand that the specific description below is illustrative rather than restrictive and should not be construed as limiting the scope of protection of this disclosure.
[0023] like Figure 1 As shown, one embodiment of this disclosure provides an online health status detection device for traction wire ropes, comprising: 20 ring-shaped magnetic flux leakage detector, 30 excitation assembly and 10 controller; The annular magnetic flux leakage detector 20 includes an annular bracket 21 sleeved on the steel wire rope 80 to be tested, multiple magnetic induction components 22 uniformly fixed on the annular bracket 21, and a data acquisition module 23; specifically, the steel wire rope 80 to be tested is located at the axis of the annular bracket 21.
[0024] The controller 10 is used to control the excitation component 30 to magnetize the steel wire rope 80 under test with constant current and pulse current respectively. The plurality of magnetic induction components 22 are further configured to scan the steel wire rope 80 under test in response to constant current magnetization or pulse current magnetization after the excitation component 30 has performed constant current magnetization or pulse current magnetization on the steel wire rope 80 under test, and to perform static magnetic field detection at different circumferential positions of the steel wire rope 80 under test in response to pulse current magnetization, and to perform transient magnetic field detection at different circumferential positions of the steel wire rope 80 under test. Specifically, in this embodiment, the controller 10 controls the excitation component 30 to perform constant current magnetization or pulse current magnetization on the steel wire rope 80 under test and starts timing. When the timing reaches a preset time, the excitation component 30 has completed performing constant current magnetization or pulse current magnetization on the steel wire rope 80 under test.
[0025] The acquisition module 23 is used to acquire static magnetic field detection data of multiple magnetic induction components 22 and send it to the controller 10 so that the controller 10 can obtain static leakage magnetic field results. It is also used to acquire transient magnetic field detection data of multiple magnetic induction components 22 and send it to the controller 10 so that the controller 10 can obtain transient leakage magnetic field results.
[0026] The online testing device of the present invention is installed on a vehicle, allowing users to test the wire rope anytime and anywhere. Multiple magnetic induction components 22 can test the wire rope 80 after it has been magnetized, responding to the user's actions of pulling the wire rope 80 out of the installation device or retracting it. The present invention allows for real-time online testing of the wire rope 80 without disassembly, significantly reducing testing costs and time, and providing convenient testing.
[0027] By combining constant current magnetization and pulsed current magnetization, this invention enables the device to detect both the surface of the steel wire rope 80 under test through static leakage magnetic field and its internal damage through transient electromagnetic response in a single scan, thus achieving a comprehensive diagnosis of the steel wire rope 80 under test from its surface to its interior, and from its current condition to potential risks.
[0028] Multiple magnetic induction components 22 evenly arranged on the annular support 21 can simultaneously collect magnetic field data of the entire circumference of the steel wire rope 80 under test. Combined with axial movement scanning, a complete two-dimensional or three-dimensional magnetic field map of the surface of the steel wire rope 80 under test can be obtained. This fundamentally avoids the problem of a single sensor potentially missing local defects, and significantly improves the defect detection rate, positioning accuracy, and quantitative assessment accuracy. Furthermore, this invention features a compact structure and is specifically designed for complex working conditions such as vehicle-mounted applications. The controller 10 automatically controls the magnetization, scanning, and data acquisition processes, making it easy to operate and highly resistant to interference. It can adapt to harsh environments such as vibration and oil contamination, providing an efficient and reliable real-time monitoring method to ensure the operational safety of large special vehicles.
[0029] In one specific example, the controller 10 is connected to a touch display module, which facilitates real-time data monitoring and operation of the controller 10 by the user.
[0030] In a specific example, constant current magnetization refers to using a current of constant magnitude and direction to excite the excitation component 30, thereby generating a strong, stable, and continuous static magnetic field on the wire rope 80 under test.
[0031] The current waveform is direct current, a horizontal straight line, and the generated magnetic field is a static saturated magnetic field. It is mainly used to locally magnetize the steel wire rope 80 under test to a saturated or near-saturated state. Specifically, the detection principle is that when the steel wire rope 80 has a defect, its material homogeneity is disrupted, and its magnetic permeability changes. In a saturated magnetic field, the defect causes distortion of the magnetic field lines, and some of these lines leak into the space outside the surface of the steel wire rope 80, forming a leakage magnetic field. By detecting this leakage magnetic field using a Hall element 221 or other magnetic sensors, the presence and size of the defect can be determined.
[0032] Pulsed current magnetization refers to using a momentary, high-energy pulse current with an extremely short duration to excite the excitation component 30, thereby generating a rapidly changing transient magnetic field in the wire rope 80 under test. Its current waveform is a non-periodic spike pulse or square wave pulse. The generated magnetic field is a dynamically changing transient magnetic field. Utilizing transient electromagnetic effects, eddy currents and electromagnetic induction signals within the wire rope 80 under test are excited and detected.
[0033] According to the law of electromagnetic induction, a changing magnetic field will induce eddy currents in the steel wire rope 80 under test. Defects, stress concentrations, or material changes in the steel wire rope 80 will alter its conductivity and permeability, thereby affecting the distribution and decay process of the eddy currents. By analyzing the secondary magnetic field generated by the induced eddy currents or its decay characteristics, defect information can be obtained. This method focuses more on changes in electromagnetic properties. This detection method is more sensitive to stress concentration, fatigue, and early damage.
[0034] In a specific example, the generation process of the static leakage magnetic field result is as follows: The controller 10 acquires the spatial magnetic field strength data measured by multiple magnetic induction components 22 after constant current magnetization through the acquisition module 23, and performs differential calculation with the preset baseline data of the defect-free steel wire rope 80 to be tested. The resulting magnetic field distortion is the static leakage magnetic field result. This result can be presented in the form of a two-dimensional spectrum, and its peak value directly corresponds to geometric defects such as broken wires and wear on the surface of the steel wire rope 80 to be tested.
[0035] The transient leakage magnetic field result is generated as follows: The controller 10 captures the magnetic field decay curve generated by the magnetic induction component 22 after pulse current magnetization through the acquisition module 23, extracts key characteristic parameters such as decay time constant, peak value, and area under the curve, and compares them with the corresponding parameters of the defect-free baseline. The resulting relative change is the transient leakage magnetic field result. This result reflects the abnormal material properties such as internal stress concentration and fatigue in the tested wire rope 80.
[0036] In one possible implementation, such as Figure 2 As shown, the magnetic induction component 22 includes a Hall element 221 for static magnetic field detection and a magnetic induction coil 222 for transient magnetic field detection.
[0037] In one possible implementation, the Hall element 221 is selected from the EQ-730L type Hall element 221.
[0038] In a specific example, the linear range of the EQ-730L Hall element 221 varies greatly depending on the strength of the magnetizing field and the magnitude of the leakage magnetic field from defects during the testing of the steel wire rope 80. A larger linear range ensures that the Hall element 221 can measure very strong or very weak magnetic fields without easily entering the saturation region. This guarantees that even near strong magnetizing fields or when encountering large defects, the element can output a true, undistorted signal, avoiding signal clipping distortion and ensuring the integrity and reliability of the test data. Furthermore, a larger linear range means maintaining extremely high measurement linearity and accuracy over a wider range of magnetic field strengths. At the same time, the wide linear range reduces the requirements for circuit debugging; the system maintains stable accuracy under different testing conditions, such as different magnetizing currents, without the need for frequent recalibration or range switching to adapt to different field strengths, simplifying system design and operation.
[0039] In one possible implementation, the excitation assembly 30 includes an excitation coil 33, a first drive module 31, and a second drive module 32. The controller 10 is used to drive the excitation coil 33 to magnetize the steel wire rope 80 under test with a constant current by controlling the first drive module 31 to output a constant current signal; it is also used to drive the excitation coil 33 to magnetize the steel wire rope 80 under test with a pulse current by controlling the second drive module 32 to output a pulse current signal.
[0040] In one possible implementation, the excitation coil 33 is selected from Helmholtz coils. While the magnetic field generated by a single coil is not spatially uniform, a pair of coils placed according to the Helmholtz condition can mutually compensate and superimpose their magnetic fields, thereby forming a large and flat uniform magnetic field region in the central area of the coil pair. This ensures the stability of the magnetization process.
[0041] In a specific example, a Helmholtz coil is a pair of identical circular coils placed parallel to each other, coaxially, and with the distance between them exactly equal to the radius of each coil.
[0042] When equal and opposite currents are passed through the two coils, they can generate a highly uniform and constant magnetic field over a large spatial range near the center of their common axis.
[0043] In one possible implementation, the excitation assembly 30 further includes a second communication module 34; The controller 10 is used to control the first drive module 31 to output a constant current signal via the second communication module 34, so as to drive the excitation coil 33 to magnetize the steel wire rope 80 under test with a constant current; it is also used to control the second drive module 32 to output a pulse current signal via the second communication module 34, so as to drive the excitation coil 33 to magnetize the steel wire rope 80 under test with a pulse current.
[0044] In one possible implementation, the online health status detection device further includes a first communication module 40; The controller 10 is used to send the static leakage magnetic field results and the transient leakage magnetic field results to the external terminal 50 through the first communication module 40. In a specific example, the external terminal 50 can be a host computer or other terminal device, and this embodiment does not limit this.
[0045] In one possible implementation, the first communication module and the second communication module are both wireless communication modules.
[0046] In one possible implementation, the combination of drive mechanism 72 and displacement mechanism 71 can directly adopt a linear motor, which itself is a high-performance solution that integrates drive and displacement mechanism 71.
[0047] In one possible implementation, the number of magnetic induction components 22 is greater than or equal to 32.
[0048] In a specific example, the working principle of the present invention is as follows: Figure 3 As shown, when performing the health monitoring task of the steel wire rope 80 under test, the steel wire rope 80 under test is pulled out by the installation device 60 or retracted by the winch. The steel wire rope 80 under test passes through the center of the annular leakage magnetic field detector 20. During the pulling out and retraction process, the user can directly control the excitation component 30 through the external terminal 50, or control the excitation component 30 through the controller 10 using the external terminal 50, or control the excitation component 30 through the controller 10 using the touch display module to magnetize the steel wire rope 80 under test. Parameters such as the excitation voltage, sampling frequency, number of sampling points, and number of excitations of the excitation component 30 can be set. Trigger commands are sent to the controller 10 through the touch display module, buttons, or host computer. According to the type of trigger command, the controller 10 controls the first drive module 31 or the second drive module 32 to perform magnetic field excitation, thereby saturating the steel wire rope 80 under test. It should be noted that in this embodiment, the controller 10 can also be a host computer, and this embodiment does not limit this. It should be noted that the installation device 60 is installed on a special vehicle and is used to store or release the wire rope. The winch is the driving component of the installation device 60 and can drive the installation device 60 to retract the wire rope 80.
[0049] Specifically, the second driving circuit is the pulse excitation circuit required for detection by the induction coil array. It uses a high-power field-effect transistor to charge the energy storage capacitor and, after energy storage is completed, controls the capacitor to release energy to the excitation coil 33 to achieve saturation magnetization of the rope. The first driving circuit is the DC excitation circuit required for detection by the Hall element 221 array. It uses a DC12 to DC24V adjustable boost power supply module connected in parallel to the two ends of the charging and discharging circuit output interface through a high-power diode. A potentiometer is used to adjust the output voltage of different amplitudes to excite the coil.
[0050] After the steel wire rope 80 under test is magnetized, the signal collected by the array sensor is collected by the acquisition module 23. The acquisition module 23 can be a data acquisition card. The data is collected by the controller 10 to read the signals collected by each Hall element 221 and each induction coil array in real time. The data is displayed by the touch display module. The fluctuation of the leakage magnetic signal can be used to determine whether there is a defect in the steel wire rope 80 under test.
[0051] Following the example above, the excitation component 30 also includes a second communication module 34, through which the external terminal 50 or the controller 10 can communicate with the first drive module 31 and the second drive module 32 via Ethernet.
[0052] Following the example above, when magnetizing the steel wire rope 80 to be tested, if the rope body is without defects, the magnetic field lines of the excitation field will be bound within the rope body, and the magnetic field on the surface of the rope body will be uniform without abrupt changes. When defects exist, the magnetic field lines will be distorted at the defect location and leak into the air, forming a leakage magnetic field. By using a magnetic sensitive element to detect the rope body under different magnetization methods, the leakage magnetic field caused by defects can be detected, thereby achieving the purpose of defect detection of the steel wire rope 80 to be tested. There are two magnetization methods for the steel wire rope 80 under test. The first is DC magnetization, which has advantages in surface inspection. By applying a DC signal of fixed amplitude to the ring excitation coil 33, a magnetic field is generated in the direction parallel to the axis of the steel wire rope 80 under test. At this time, the Hall element 221 is used to scan along the rope to detect defects. The second is pulse magnetization. The difference between DC magnetization and pulse magnetization is that a pulse signal is applied to the excitation coil 33, which can instantly saturate the rope. The magnetic permeability of the rope is uniform in the defect-free area, but the magnetic permeability will change at the internal defect location. The change in the main magnetic flux of the rope is detected by the induction coil to determine whether there is an internal defect.
[0053] Following the example above, such as Figure 2 As shown. The excitation coil 33 uses 0.7mm diameter enameled wire with 80 turns and 15 layers, forming a Helmholtz coil with parallel double rings connected in parallel, which can achieve saturation magnetization of the steel wire rope 80 under test. The Hall element 221 adopts the EQ-730L type with a large linear range. To achieve circumferential coverage of the rope surface detection, 32 Hall elements 221 are arranged at 11.25° intervals inside the ring sensor. Induction coils with magnetic cores are used to collect instantaneous transient magnetic field defect information. Like the Hall elements 221, a total of 32 are deployed, divided into 4 units. The excitation assembly 30 is used to achieve saturation magnetization of the steel wire rope 80 under test. The acquisition module 23 needs to have at least 36 acquisition channels. Using a USB5630 data acquisition card, it can provide 64 channels of analog single-ended input, with a sampling rate of up to 500kSPS. The first communication module 40 and the second communication module 34 are wireless communication modules, using CX6602N, with a transmission rate of up to 30Mbps and a maximum transmission distance of 10km, enabling remote wireless communication between the excitation component 30 and the controller 10.
[0054] In the description of this disclosure, it should be noted that the terms "upper," "lower," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this disclosure and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this disclosure. Unless otherwise expressly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly, for example, they can be fixed connections, detachable connections, or integral connections; they can be mechanical connections or electrical connections; they can be direct connections or indirect connections through an intermediate medium; they can be internal connections between two elements. For those skilled in the art, the specific meaning of the above terms in this disclosure can be understood according to the specific circumstances.
[0055] It should also be noted that, in the description of this disclosure, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.
[0056] Obviously, the above embodiments of this disclosure are merely examples for clearly illustrating this disclosure, and are not intended to limit the implementation of this disclosure. For those skilled in the art, other variations or modifications can be made based on the above description. It is impossible to exhaustively list all implementation methods here. Any obvious variations or modifications derived from the technical solutions of this disclosure are still within the protection scope of this disclosure.
Claims
1. An online health status detection device for traction wire ropes, characterized in that, The online inspection device is installed on the vehicle and includes: Ring-shaped magnetic flux leakage detector, excitation assembly, and controller; The annular magnetic flux leakage detector includes an annular bracket sleeved on the steel wire rope to be tested, multiple magnetic induction components uniformly fixed on the annular bracket, and a data acquisition module. The controller is used to control the excitation component to magnetize the steel wire rope under test with constant current and pulse current respectively; The plurality of magnetic induction components are further configured to, after the excitation component has magnetized the steel wire rope under test with constant current or pulse current, detect the steel wire rope under test in response to the user's operation of pulling the steel wire rope under test out of the installation device or in response to the user's operation of retracting the steel wire rope under test from the installation device, in response to the constant current magnetization of the steel wire rope under test, perform static magnetic field detection at different circumferential positions of the steel wire rope under test, or in response to the pulse current magnetization of the steel wire rope under test, perform transient magnetic field detection at different circumferential positions of the steel wire rope under test. The acquisition module is used to acquire static magnetic field detection data of multiple magnetic induction components and send it to the controller so that the controller can obtain static leakage magnetic field results. It is also used to acquire transient magnetic field detection data of multiple magnetic induction components and send it to the controller so that the controller can obtain transient leakage magnetic field results.
2. The online health status detection device according to claim 1, characterized in that, The magnetic induction assembly includes a Hall element for static magnetic field detection and a magnetic induction coil for transient magnetic field detection.
3. The online health status detection device according to claim 2, characterized in that, The Hall element is selected from the EQ-730L type Hall element.
4. The online health status detection device according to claim 1, characterized in that, The excitation assembly includes an excitation coil, a first drive module, and a second drive module; The controller is used to control the first drive module to output a constant current signal to drive the excitation coil to magnetize the steel wire rope under test with a constant current. It is also used to drive the excitation coil to magnetize the steel wire rope under test by controlling the output of pulse current signal from the second drive module.
5. The online health status detection device according to claim 4, characterized in that, The excitation coil is selected from Helmholtz coils.
6. The online health status detection device according to claim 4, characterized in that, The excitation assembly also includes a second communication module; The controller is used to control the first drive module to output a constant current signal via the second communication module, so as to drive the excitation coil to magnetize the steel wire rope under test with a constant current. It is also used to control the second drive module to output a pulse current signal via the second communication module, so as to drive the excitation coil to magnetize the steel wire rope under test with pulse current.
7. The online health status detection device according to claim 6, characterized in that, The online health status detection device also includes a first communication module; The controller is used to send the static leakage magnetic field results and the transient leakage magnetic field results to an external terminal through the first communication module.
8. The online health status detection device according to claim 7, characterized in that, The first communication module and the second communication module are both wireless communication modules.
9. The online health status detection device according to claim 1, characterized in that, The controller is selected from the host computer.
10. The online health status detection device according to claim 1, characterized in that, The number of magnetic induction components is greater than or equal to 32.