Steel wire rope tension detection device and system

Abstract

The invention discloses a steel wire rope tension detection device and system. The device comprises an excitation coil framework with a concave structure; the excitation coil is wound on the excitation coil framework, and when excitation voltage is input, an excitation magnetic field is generated in a groove of the excitation coil framework; the induction coil framework is arranged in the groove and is connected with the excitation coil framework; the induction coil is wound on the induction coil framework, the induction coil comprises a plurality of induction coil sections which are detachably connected, the to-be-detected steel wire rope is sleeved with the induction coil, the induction coil generates induction voltage and outputs the induction voltage under the coupling action of the excitation magnetic field and the pulling force of the to-be-detected steel wire rope, and the induction voltage is used for determining the pulling force. The tension detection device can also be conveniently installed for tension detection after the steel wire rope is installed, and can also be conveniently detached from the steel wire rope after detection is completed, so that detachment and maintenance after the tension detection device is installed are realized.

Description

Technical Field

[0001] The present application belongs to the technical field of tension detection, and in particular, relates to a wire rope tension detection device and system. Background Art

[0002] As a load-bearing component, steel wire rope has the advantages of high strength, small mass and compact size, and occupies a key position in many engineering facilities. Whether it is a cable-stayed bridge, a tower or a running elevator, accurate measurement of the tension of the steel wire rope is crucial to ensure the safety and functionality of the structure. The steel wire rope tension detection scheme based on the magnetoelastic effect has the advantages of fast dynamic response and high measurement accuracy, and is widely used in various occasions. This type of detection scheme uses the steel wire rope body as the sensing core, and wears an excitation coil and an induction coil on the outside respectively. It uses the inherent connection between the magnetic properties of the steel wire rope itself and the tension it is subjected to, and realizes accurate measurement of the tension by detecting the induced voltage under magnetic field excitation.

[0003] In the related art, most of the wire rope tension detection devices based on the magnetoelastic effect use a sleeve as the supporting structure for the winding coil. The detection device with a sleeve structure needs to be inserted into the wire rope first, and then the load-bearing components of the wire rope are installed. The wire rope tension detection device cannot be disassembled and maintained after installation. Summary of the invention

[0004] The purpose of the embodiments of the present application is to provide a wire rope tension detection device and system to solve the problem in the related art that the wire rope tension detection device cannot be disassembled and maintained after installation.

[0005] To achieve the above objectives, the present application embodiment adopts the following technical solutions: In the first aspect, an embodiment of the present application provides a wire rope tension detection device, comprising: an excitation coil skeleton, the excitation coil skeleton is a concave structure; an excitation coil, the excitation coil is wound on the excitation coil skeleton, and when an excitation voltage is input, an excitation magnetic field is generated inside the groove of the excitation coil skeleton; an induction coil skeleton, the induction coil skeleton is arranged in the groove and is connected to the excitation coil skeleton; an induction coil, the induction coil is wound on the induction coil skeleton, the induction coil includes a plurality of detachably connected induction coil segments, the wire rope to be detected is sleeved in the induction coil, and the induction coil generates an induced voltage and outputs the induced voltage under the coupling action of the excitation magnetic field and the tension of the wire rope to be detected, and the induced voltage is used to determine the tension.

[0006] In a second aspect, an embodiment of the present application provides a wire rope tension detection system, comprising: a wire rope tension detection device as described in the embodiment of the first aspect of the present application; an oscillation source for inputting an excitation voltage into an excitation coil of the wire rope tension detection device; and a processor for determining the tension of the wire rope to be detected based on the induced voltage output by the induction coil of the wire rope tension detection device.

[0007] At least one of the above technical solutions adopted in the embodiments of the present application can achieve the following beneficial effects: In the embodiment of the present application, the excitation coil is wound on an excitation coil frame of a concave structure, and when the excitation voltage is input, an excitation magnetic field is generated inside the groove of the excitation coil frame, the induction coil frame is arranged in the groove and connected to the excitation coil frame, the induction coil is wound on the induction coil frame, the induction coil includes a plurality of detachably connected induction coil segments, the steel wire rope to be detected is sleeved in the induction coil, and the induction coil generates and outputs an induced voltage under the coupling effect of the excitation magnetic field and the tension of the steel wire rope to be detected, and the induced voltage is used to determine the tension. Among them, the induction coil includes a plurality of detachably connected induction coil segments, so that the tension detection device including the induction coil can be easily installed for tension detection after the steel wire rope is installed, and can also be easily removed from the steel wire rope after the detection is completed, thereby realizing the disassembly and maintenance of the steel wire rope tension detection device after installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings: Figure 1 A schematic structural diagram of a wire rope tension detection device provided for one embodiment of the present application; Figure 2 A schematic diagram of an induction coil provided for one embodiment of the present application; Figure 3 A schematic diagram of the dimensions of a concave excitation coil skeleton provided for one embodiment of the present application; Figure 4 A schematic diagram of a magnetic flux density varying with distance provided for one embodiment of the present application; Figure 5 A schematic diagram showing how the amplitude of the induced voltage varies with the excitation frequency provided in one embodiment of the present application; Figure 6 A schematic structural diagram of a wire rope tension detection system provided for one embodiment of the present application; Figure 7 A schematic diagram of the corresponding relationship between the amplitude of the induced voltage and the pulling force provided in one embodiment of the present application; Figure 8 A schematic diagram showing the variation of the amplitude of the induced voltage over time provided for one embodiment of the present application. DETAILED DESCRIPTION

[0009] In order to make the purpose, technical solution and advantages of the present application clearer, the technical solution of the present application will be clearly and completely described below in combination with the specific embodiments of the present application and the corresponding drawings. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present application.

[0010] The terms "first", "second", etc. in this application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described here. In addition, the "and / or" in this application represents at least one of the connected objects, and the character " / " generally represents that the front and back associated objects are in an "or" relationship. It should be noted that the data involved in this application are all obtained on the premise of obtaining user authorization.

[0011] As a load-bearing component, steel wire rope has the advantages of high strength, small mass and compact size, and occupies a key position in many engineering facilities. Whether it is a cable-stayed bridge, a tower or a running elevator, accurate measurement of the tension of the steel wire rope is crucial to ensure the safety and functionality of the structure. The steel wire rope tension detection scheme based on the magnetoelastic effect has the advantages of fast dynamic response and high measurement accuracy, and is widely used in various occasions. This type of detection scheme uses the steel wire rope body as the sensing core, and wears an excitation coil and an induction coil on the outside respectively. It uses the inherent connection between the magnetic properties of the steel wire rope itself and the tension it is subjected to, and realizes accurate measurement of the tension by detecting the induced voltage under magnetic field excitation.

[0012] In the related art, most of the wire rope tension detection devices based on magnetoelastic effect use a sleeve as the supporting structure of the winding coil. The detection device similar to the sleeve structure needs to be inserted into the wire rope first, and then the load-bearing components of the wire rope are installed. The wire rope tension detection device cannot be disassembled and maintained after installation. To this end, the present application proposes a split-type detachable (or reconfigurable) wire rope tension detection device and system to solve the problem that the wire rope tension detection device in the related art cannot be disassembled and maintained after installation.

[0013] The technical solutions provided by various embodiments of the present application are described in detail below in conjunction with the accompanying drawings.

[0014] Figure 1The following is a schematic diagram of a steel wire rope tension detection device provided in one embodiment of the present application. Figure 1 As shown, the wire rope tension detection device of the embodiment of the present application may specifically include: an excitation coil skeleton 11, an excitation coil 12, an induction coil skeleton 13 and an induction coil 14. Among them: The framework of the excitation coil 11 is a concave structure, having a groove, which may specifically include but is not limited to a square groove, a semicircular groove, etc. Figure 1 As a feasible implementation, the excitation coil skeleton can be generated by three-dimensional (3D) printing using white resin.

[0015] The excitation coil 12 is wound around the excitation coil frame 11, and when an excitation voltage is input, an excitation magnetic field is generated inside the groove. The excitation coil 12 may be made of copper or the like.

[0016] The induction coil frame 13 is arranged in the groove and connected to the excitation coil frame 11. Figure 1 As shown, the induction coil frame 13 is connected to the excitation coil frame 11 through the threaded structures at both ends. As a feasible implementation, the induction coil frame 13 can be Figure 1 The semicircular coil skeleton is shown.

[0017] The induction coil 14 is wound on the induction coil frame 13, and the induction coil 14 includes a plurality of detachably connected induction coil segments 141 (such as Figure 2 As shown in the figure, multiple induction coil segments 141 can be quickly connected or disassembled through buckle connectors 142, etc., the induction coil 14 can be fixed on the induction coil skeleton 13 by pasting, and the steel wire rope 15 to be detected is sleeved in the induction coil 14. The buckle connector 142 can realize the rapid installation and disassembly of the steel wire rope tension detection device. Among them, the induction coil can be specifically a flexible printed circuit (Flexible Printed Circuit, referred to as FPC) coil, and in practical applications, FPC cables can be used to cross-connect to form an induction coil loop.

[0018] The induction coil 14 generates an induced voltage under the coupling effect of the excitation magnetic field and the tension (i.e., axial tension) of the steel wire rope 15 to be detected. V out And output the induced voltage V out .

[0019] Induced voltage V out To determine the pulling force F , the specific calculation formula can be shown as follows: (1) in, K u is the uniaxial magnetic anisotropy constant, V 0 is the input voltage of the exciting coil 12, λ s is the saturation magnetostriction coefficient, M s is the saturation magnetization, E is the elastic modulus of the steel wire rope 15, S 0 is the cross-sectional area of ​​the induction coil 14, μ 0 is the vacuum permeability, H is the magnetic field strength, θ 0 is the angle between the magnetic field and the easy magnetization axis, S f is the cross-sectional area of ​​the wire rope 15.

[0020] The following is a detailed introduction to the derivation process of the above formula (1), that is, the principle of wire rope tension detection based on magnetoelastic effect: When the excitation voltage is input to the excitation coil 12, an excitation magnetic field is generated inside the groove. The induction coil 14 generates an excitation magnetic field in the excitation magnetic field and the tension of the steel wire rope 15. F Under the coupling effect, an induced voltage is generated V out The steel wire rope 15 is tensioned externally F Under the action of the magnetic domain, the internal magnetic domain and the magnetic domain wall move and deflect, causing the magnetic permeability μ With tension F The change of changes, the induction voltage output by the induction coil 14 V out The pulling force can be calculated by measuring the induced voltage value. F Size, to achieve the tension of wire rope 15 F Real-time monitoring of the tension of the steel wire rope during elevator operation F Real-time monitoring.

[0021] According to the Joul effect, the axial strain of the steel wire rope 15 is ε and the change in magnetic permeability Δ μ The relationship is as follows: (2) From the above formula (2), it can be seen that the axial strain of the wire rope 15 is ε and the change in magnetic permeability Δ μ However, in actual testing, direct measurement of magnetic permeability μ It is more difficult, and the induced voltage can be measured based on the principle of magnetic induction V out Indirect reflection of magnetic permeability μThe change in magnetic permeability Δ μ With induced voltage V out There are the following relationships: (3) According to Hooke's law of material mechanics, the axial tension of the wire rope 15 is obtained as F With axial strain ε The relationship is as follows: (4) Wherein, σ is the stress of the cross section of the wire rope 15.

[0022] Substituting the above formulas (3) and (4) into the above formula (2), we can get the induced voltage V out The relationship (1) changes with the axial tension F of the wire rope 15.

[0023] In terms of structural size parameters and excitation voltage V 0After confirmation, S 0. S f , V 0 and H are all constants. From equation (1), we can see that the induced voltage V out With tension F The relationship is linear. By measuring the induced voltage signal, the tension of the steel wire rope 15 can be calculated. F size.

[0024] Furthermore, when the groove is a square groove, the distance from each side of the groove to the outermost parallel side is l , according to the magnetic flux density at the center of the groove B z With distance l The simulation test results of the changes are determined.

[0025] Specifically, in the concave excitation coil winding structure, the size parameter is crucial to the size of the generated excitation magnetic field. Therefore, a reasonable design of the size of the excitation coil skeleton 11 can obtain a larger excitation magnetic field, thereby improving the sensitivity of the wire rope tension detection device.

[0026] Taking the steel wire rope 15 with a diameter of 8 mm as an example, the side length of the square groove is determined to be 20 mm. Figure 3 As shown, the distance from each side of the groove to the parallel side of the outermost circle l Optimize the design. Use COMSOL and other simulation software to lThe magnetic field generated by the concave excitation coil is simulated and calculated. The excitation coil is set to copper material properties, the number of turns is 200, the current is 0.2A (A), and the mesh is constructed using ultra-fine tetrahedral units. The magnetic flux density perpendicular to the plane of the excitation coil is calculated. B z value.

[0027] The magnetic flux density at the center of the square groove (i.e. the location of the wire rope) obtained by simulation B z With distance l The simulation test results of the changes are as follows Figure 4 As shown, the horizontal axis is the distance from each side of the groove to the parallel side of the outermost circle l , unit is mm, vertical axis is magnetic flux density B z , the unit is nanotesla (nT). Figure 4 It can be seen that with distance l increase, B z Gradually increases. l >30mm, B z The increase began to slow down and continued through growth l The size of the magnetic field cannot be greatly improved, so the distance from each side of the groove to the parallel side of the outermost circle in the concave excitation coil structure can be determined. l It is 30mm.

[0028] The optimized structural parameters were selected to prepare the wire rope tension detection device. The other parameters were designed as follows: the diameter of the semicircular induction coil skeleton was set to 13 mm, the wall thickness was 1.5 mm, the number of turns of the concave excitation coil was 200, the winding length was 70 mm, and the wire diameter was 0.35 mm. The number of turns of the induction coil was 120, the winding length was 50 mm, and the wire diameter was 0.12 mm.

[0029] Furthermore, the excitation frequency of the excitation coil 12 f According to the induced voltage V out The amplitude V m With excitation frequency f The theoretical calculation results of the changes are determined.

[0030] Specifically, the excitation frequency of the excitation coil 12 is f The induced voltage generated V out The size of is crucial, so the excitation frequency of the excitation coil 12 is reasonably set. f A larger induced voltage can be obtained V out, thereby improving the sensitivity of the wire rope tension detection device.

[0031] When the excitation voltage value is constant, the current in the excitation coil 12 I The DC resistance of the excitation coil 12 R ,inductance L And the excitation frequency f Related, and have the following relationship: (5) in, V is the excitation voltage, Z is the impedance of the excitation coil 12.

[0032] The induced voltage generated by the induction coil 14 V out Depends on the magnetic flux Φ When a sine wave signal is used for excitation, the magnetic flux Φ About Time t Taking the derivative, we can get the induced voltage V out With excitation frequency f The relationship is as follows: (6) in, N is the number of turns of the excitation coil 12, S 0 is the cross-sectional area of ​​the induction coil, B is the magnetic induction intensity, μ 0 is the vacuum permeability, H m is the amplitude of the excitation magnetic field, φ is the phase angle.

[0033] Combining the above formulas (5) and (6), we get the following expression: (7) (8) in, V m is the induced voltage V out The amplitude of K is the proportionality coefficient, k ' is the electromagnetic conversion coefficient of the excitation magnetic field generated by the concave excitation coil at the position of the wire rope. When the structural parameters of the concave excitation coil are fixed, K is a constant.

[0034] From the above formulas (7) and (8), we can see that when the proportional coefficient K is a constant, the amplitude of the induced voltage V mDepends on the DC resistance of the excitation coil 12 R ,inductance L And the excitation frequency f .

[0035] Assume that the DC resistance of the 200-turn excitation coil 12 is measured using an LCR meter. R The inductance is 11.6 ohms. L is 2.36 millihenry (mH). In order to generate a larger induced voltage signal, a curve of the induced voltage amplitude changing with the excitation frequency is plotted according to the above formula (7), as shown in Figure 5 As shown in the figure, the horizontal axis is the excitation frequency in Hertz (Hz), and the vertical axis is the amplitude of the induced voltage. Figure 5 It can be seen that when the excitation frequency is less than 10 kHz, the amplitude of the induced voltage increases with the increase of the excitation frequency. When the excitation frequency is greater than 10 kHz, the amplitude of the induced voltage no longer changes with the excitation frequency and tends to be constant. The amplitude of the induced voltage at an excitation frequency of 100 Hz is 0.13 V m The amplitude of the induced voltage at an excitation frequency of 5kHz is V m , it can be seen that the amplitude of the induced voltage can be greatly increased by optimizing the excitation frequency. At the same time, in order to ensure that the excitation coil 12 generates a larger excitation magnetic field, an excitation frequency of 5 kHz can be selected.

[0036] In summary, in the wire rope tension detection device of the embodiment of the present application, the excitation coil is wound on an excitation coil frame having a groove, when the excitation voltage is input, an excitation magnetic field is generated inside the groove, the induction coil frame is arranged in the groove and connected to the excitation coil frame, the induction coil is wound on the induction coil frame, the induction coil includes a plurality of detachably connected induction coil segments, the wire rope to be detected is sleeved in the induction coil, the induction coil generates an induced voltage and outputs the induced voltage under the coupling effect of the excitation magnetic field and the tension of the wire rope to be detected, and the induced voltage is used to determine the tension. Among them, the induction coil includes a plurality of detachably connected induction coil segments, so that the tension detection device including the induction coil can be easily installed for tension detection after the wire rope is installed, and can also be easily removed from the wire rope after the detection is completed, thereby realizing the disassembly and maintenance of the wire rope tension detection device after installation. By determining the distance based on the simulation test results of how the magnetic flux density at the center of the groove changes with the distance from each side of the groove to the parallel side of the outermost circle, a larger excitation magnetic field can be obtained. By determining the excitation frequency of the excitation coil based on the theoretical calculation results of how the amplitude of the induced voltage changes with the excitation frequency, a larger induced voltage can be obtained, thereby improving the sensitivity of the wire rope tension detection device.

[0037] Figure 6The following is a schematic diagram of a steel wire rope tension detection system provided by an embodiment of the present application. Figure 6 As shown, the wire rope tension detection system of the embodiment of the present application may specifically include: a wire rope tension detection device as shown in any of the above embodiments, an oscillation source 81 and a processor 82. Among them, The oscillation source 81 is used to input an excitation voltage into the excitation coil 12 of the wire rope tension detection device.

[0038] The processor 82 is used to detect the induction voltage output by the induction coil 14 of the wire rope tension detection device. V out , determine the tension of the steel wire rope 15 to be tested F .

[0039] In a possible implementation of the embodiment of the present application, the wire rope tension detection system of the embodiment of the present application may also include: an oscilloscope for collecting the induced voltage output by the induction coil 14 V out And display the induced voltage V out waveform.

[0040] In a possible implementation of the embodiment of the present application, as Figure 6 As shown, the wire rope tension detection system of the embodiment of the present application may also include: a power amplifier 83, which is used to amplify the excitation voltage output by the oscillation source 81 and input the amplified excitation voltage into the excitation coil 12 of the wire rope tension detection device.

[0041] In a possible implementation of the embodiment of the present application, as Figure 6 As shown, the wire rope tension detection system of the embodiment of the present application may also include: a phase sensitive detector (Phase Sensitive Detection, referred to as PSD) 84 and a low-pass filter (Low-Pass Filter, referred to as LPF) 85, wherein: The phase-sensitive detector 84 is used to detect the induced voltage output by the induction coil 14 of the wire rope tension detection device. V out The first harmonic of the signal is demodulated to obtain the demodulated induced voltage.

[0042] The low-pass filter 85 is used to perform low-pass filtering on the demodulated induced voltage to obtain the amplitude of the induced voltage. V m Equal direct current (DC) voltage.

[0043] It should be noted here that the oscillation source 81 , the phase-sensitive detector 84 and the low-pass filter 85 can be provided separately, or can be integrated in the phase-locked amplifier 86 .

[0044] Use Figure 6 The wire rope tension detection system shown in the experiment was tested (no Figure 6 The test was conducted at room temperature, using a tensile testing machine to clamp both ends of a 8mm diameter steel wire rope and apply a tensile force of F The range is 0~14 kilonewtons (kN). Before the test begins, pre-tighten the wire rope, then clear the digital display of the tension measuring instrument, and then gradually increase the tension. F The oscillator 81 is used to output a 5kHz sine wave signal, and a current with an amplitude of 200mA is passed through the power amplifier 83 to the excitation coil 12 to generate an excitation magnetic field. F The induced voltage signal is output under the coupling effect, and the first harmonic of the induced voltage signal is demodulated by the phase-sensitive detector 84, and a DC signal equal to the signal amplitude is obtained through a 1Hz low-pass filter 85, and the data is collected by the collector to obtain the amplitude of the induced voltage. V m , and record the tension F The magnitude of the induced voltage V m The corresponding relationship.

[0045] The tension of 0 to 14 kN is gradually applied to both ends of the wire rope, with a step size of 1 kN and a loading speed of 0.2 kN / s, and the amplitude of the induced voltage is obtained. V m With tension F The corresponding relationship, such as Figure 7 As shown, the horizontal axis is the tension, in kN, and the vertical axis is the amplitude of the induced voltage V m , in millivolts (mV). Figure 7 It can be seen that with the tension F The increase of the induced voltage V m This phenomenon is contrary to the results reported in some other studies. The reason is that under the action of tension, the material is always pushed to a stable state with minimum energy. The final minimum energy state under a certain magnetic field is the corresponding hysteresis-free magnetization state. The application of tension causes the magnetization intensity to M Hysteresis-free magnetization M an The direction change, that is M +Δ M → Man , due to the different magnetization states of the wire rope, Δ M It may be positive or negative. Therefore, when Δ M When <0, the amplitude of the induced voltage V m With tension F Use Origin and other software to Figure 7 The linear fitting equation obtained by performing linear fitting on the data is: y =-5.83 x +372.42, coefficient of determination R 2 =0.994, thus the measurement sensitivity is 5.83mV / kN.

[0046] Apply tension to both ends of the wire rope at a loading speed of 20kN / s to obtain the amplitude of the induced voltage V m The relationship between changes over time, such as Figure 8 As shown, the horizontal axis is time, in seconds, and the vertical axis is the amplitude of the induced voltage V m , in millivolts (mV). Figure 8 It can be seen that for every 0.4kN change in tension, the amplitude of the induced voltage V m A mutation occurs, and the resolution is 0.4kN, which is 0.4 / 14=2.8% of the full scale (14kN).

[0047] In summary, in the wire rope tension detection system of the embodiment of the present application, the excitation coil is wound on an excitation coil frame having a groove, and when the excitation voltage is input, an excitation magnetic field is generated inside the groove, the induction coil frame is arranged in the groove and connected to the excitation coil frame, the induction coil is wound on the induction coil frame, the induction coil includes a plurality of detachably connected induction coil segments, the wire rope to be detected is sleeved in the induction coil, and the induction coil generates and outputs an induced voltage under the coupling effect of the excitation magnetic field and the tension of the wire rope to be detected, and the induced voltage is used to determine the tension. Among them, the induction coil includes a plurality of detachably connected induction coil segments, so that the tension detection device including the induction coil can be easily installed for tension detection after the wire rope is installed, and can also be easily removed from the wire rope after the detection is completed, thereby realizing the disassembly and maintenance of the wire rope tension detection device after installation. By determining the distance based on the simulation test results of how the magnetic flux density at the center of the groove changes with the distance from each side of the groove to the parallel side of the outermost circle, a larger excitation magnetic field can be obtained. By determining the excitation frequency of the excitation coil based on the theoretical calculation results of how the amplitude of the induced voltage changes with the excitation frequency, a larger induced voltage can be obtained, thereby improving the sensitivity of the wire rope tension detection device.

[0048] The systems, devices, modules or units described in the above embodiments may be implemented by computer chips or entities, or by products with certain functions. A typical implementation device is a computer. Specifically, the computer may be, for example, a personal computer, a laptop computer, a cellular phone, a camera phone, a smart phone, a personal digital assistant, a media player, a navigation device, an email device, a game console, a tablet computer, a wearable device, or a combination of any of these devices.

[0049] For the convenience of description, the above device is described in various units according to their functions. Of course, when implementing the present application, the functions of each unit can be implemented in the same or multiple software and / or hardware.

[0050] Those skilled in the art will appreciate that the embodiments of the present application may be provided as methods, systems, or computer program products. Therefore, the present application may adopt the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware. Moreover, the present application may adopt the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program codes.

[0051] The present application is described with reference to the flowcharts and / or block diagrams of the methods, devices (systems), and computer program products according to the embodiments of the present application. It should be understood that each process and / or box in the flowchart and / or block diagram, as well as the combination of the processes and / or boxes in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to generate a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 A process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0052] These computer program instructions may also be stored in a computer readable memory capable of directing a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the computer readable memory produce an article of manufacture including an instruction device, which implements the process Figure 1 A process or multiple processes and / or boxes Figure 1 A function specified in one or more boxes.

[0053] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operating steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing instructions for implementing the process. Figure 1 A process or multiple processes and / or boxes Figure 1 The steps for the functions specified in one or more boxes.

[0054] In a typical configuration, a computing device includes one or more processors (CPU), input / output interfaces, network interfaces, and memory.

[0055] Memory may include non-permanent storage in a computer-readable medium, random access memory (RAM) and / or non-volatile memory in the form of read-only memory (ROM) or flash RAM. Memory is an example of a computer-readable medium.

[0056] Computer readable media include permanent and non-permanent, removable and non-removable media that can be implemented by any method or technology to store information. Information can be computer readable instructions, data structures, program modules or other data. Examples of computer storage media include, but are not limited to, phase change memory (PRAM), static random access memory (SRAM), dynamic random access memory (DRAM), other types of random access memory (RAM), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), flash memory or other memory technology, compact disk read-only memory (CD-ROM), digital versatile disk (DVD) or other optical storage, magnetic cassettes, magnetic tape magnetic disk storage or other magnetic storage devices or any other non-transmission media that can be used to store information that can be accessed by a computing device. As defined in this article, computer readable media does not include temporary computer readable media (transitory media), such as modulated data signals and carrier waves.

[0057] It should also be noted that the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, commodity or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, commodity or device. In the absence of more restrictions, the elements defined by the sentence "comprises a ..." do not exclude the existence of other identical elements in the process, method, commodity or device including the elements.

[0058] The present application may be described in the general context of computer-executable instructions executed by a computer, such as program modules. Generally, program modules include routines, programs, objects, components, data structures, etc. that perform specific tasks or implement specific abstract data types. The present application may also be practiced in distributed computing environments where tasks are performed by remote processing devices connected through a communication network. In a distributed computing environment, program modules may be located in local and remote computer storage media, including storage devices.

[0059] Each embodiment in this specification is described in a progressive manner, and the same or similar parts between the embodiments can be referred to each other, and each embodiment focuses on the differences from other embodiments. In particular, for the system embodiment, since it is basically similar to the method embodiment, the description is relatively simple, and the relevant parts can be referred to the partial description of the method embodiment.

[0060] The above are only embodiments of the present application and are not intended to limit the present application. For those skilled in the art, the present application may have various changes and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included within the scope of the claims of the present application.

Claims

1. A wire rope tension detection device, characterized in that: include: An excitation coil frame, wherein the excitation coil frame is a concave structure; An excitation coil, wherein the excitation coil is wound on the excitation coil frame and generates an excitation magnetic field inside the groove of the excitation coil frame when an excitation voltage is input; An induction coil frame, wherein the induction coil frame is disposed in the groove and connected to the excitation coil frame; An induction coil is wound around the induction coil frame, the induction coil includes a plurality of detachably connected induction coil segments, the steel wire rope to be detected is sleeved in the induction coil, and the induction coil generates an induced voltage and outputs the induced voltage under the coupling effect of the excitation magnetic field and the tension of the steel wire rope to be detected, and the induced voltage is used to determine the tension.

2. The device according to claim 1, characterized in that The groove is a square groove, and the induction coil frame is a semicircular coil frame.

3. The device according to claim 1, characterized in that The induction coil is a flexible circuit board coil.

4. The device according to claim 1, characterized in that The plurality of induction coil segments are connected via snap-on connectors.

5. The device according to claim 1, characterized in that The induction coil is adhered to the induction coil frame.

6. The device according to claim 1, characterized in that The groove is a square groove, and the distance from each side of the groove to the parallel side of the outermost circle is determined according to the simulation test results of the change of the magnetic flux density at the center of the groove with the distance.

7. A wire rope tension detection system, characterized in that: include: The wire rope tension detection device according to any one of claims 1 to 6; An oscillation source, used for inputting an excitation voltage into the excitation coil of the wire rope tension detection device; The processor is used to determine the tension of the steel wire rope to be detected according to the induced voltage output by the induction coil of the steel wire rope tension detection device.

8. The system according to claim 7, characterized in that Also includes: A phase-sensitive detector, used for demodulating the first harmonic of the induced voltage to obtain a demodulated induced voltage; A low-pass filter is used to perform low-pass filtering on the demodulated induced voltage to obtain a DC voltage with an amplitude equal to that of the induced voltage.

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