A magnetic reluctance change-based induction power generation system

Abstract

This disclosure proposes an induction power generation system based on magnetoresistive variation, comprising: a metal gear, a non-metal gear, at least one coil, and a monitoring module; the metal gear and the non-metal gear are rotatably mounted and mesh with each other; the coil is mounted on the non-metal gear, and the central axes of the coil and the non-metal gear are at a first preset distance; the coil generates an electrical signal based on the change in distance to the metal gear when the metal gear and the non-metal gear rotate synchronously; the input terminal of the monitoring module is connected to the output terminal of the coil, and the monitoring module monitors the structural state of the metal gear according to the changes in the electrical signal output by the coil. In this induction power generation system based on magnetoresistive variation, the structural state of the metal gear can be monitored according to the changes in the electrical signal output by the coil, and thus, rapid and accurate fault diagnosis of the rotating mechanical equipment containing the metal gear can be achieved based on the state monitoring of the metal gear.

Description

Technical Field

[0001] This disclosure relates to the field of gear monitoring technology, and in particular to an induction power generation system based on magnetic reluctance variation. Background Technology

[0002] Rotating machinery serves as the power transmission hub in industrial production, and accurate equipment condition monitoring is crucial for ensuring safe industrial operations. Due to the prolonged high-load operation and complex working environments, gearbox failures are frequent, including broken teeth, missing teeth, gear eccentricity, malfunctions, gear wear, and gear cracks. Therefore, effective condition monitoring of rotating machinery is of paramount importance.

[0003] Initially, condition monitoring of rotating machinery relied on the nonlinear functional relationship between power and gear precision. This evolved to measuring vibration signals to generate dimensional statistical parameters, and further to incorporating waveform analysis, including time-domain waveform analysis, FFT spectrum analysis, power spectrum analysis, cepstral analysis, envelope demodulation analysis, higher-order spectrum analysis, and spectral kurtosis analysis. While waveform analysis can efficiently and clearly extract fault characteristics, it still has limitations in extracting non-stationary signals and signals with strong noise interference.

[0004] Instead of using the mainstream method of collecting vibration and noise signals to analyze system faults, we are now attempting to monitor the faults of rotating machinery by detecting changes in magnetic resistance. Summary of the Invention

[0005] This disclosure aims to at least partially address one of the technical problems in the related art.

[0006] Therefore, the purpose of this disclosure is to provide an induction power generation system based on magnetoresistive variation.

[0007] To achieve the above objectives, this disclosure provides an induction power generation system based on magnetoresistive changes, comprising: a metal gear, a non-metal gear, at least one coil, and a monitoring module; the metal gear and the non-metal gear are rotatably arranged and mesh with each other; the coil is disposed on the non-metal gear, and the central axis of the coil and the non-metal gear has a first preset distance; the coil is used to generate an electrical signal based on the change in distance from the metal gear when the metal gear and the non-metal gear rotate synchronously; the input terminal of the monitoring module is connected to the output terminal of the coil, and the monitoring module is used to monitor the structural state of the metal gear according to the change in the electrical signal output by the coil.

[0008] Optionally, the system further includes: at least one permanent magnet disposed on the non-metallic gear, and the permanent magnet being located at one end of the coil away from the central axis of the non-metallic gear.

[0009] Optionally, the system further includes: an iron core disposed on the non-metallic gear, wherein the central axis of the iron core and the non-metallic gear have the first preset distance, and the coil is sleeved on the iron core.

[0010] Optionally, the system further includes a load, the input of which is connected to the output of the coil.

[0011] Optionally, the system further includes: a fixed support and a slip ring; wherein, the conductive ring of the slip ring is disposed on the non-metallic gear, and the central axis of the conductive ring coincides with the central axis of the non-metallic gear, and the conductive ring is connected to the output end of the coil; the brush of the slip ring is disposed on the fixed support, and the brush is connected to the input end of the monitoring module.

[0012] Optionally, the non-metallic gear includes: a first half gear and a second half gear, the first half gear and the second half gear being detachably connected along the axial direction of the non-metallic gear; wherein, the first half gear has at least one first groove on its side near the second half gear, and the first groove and the central axis of the first half gear have a first preset distance; the second half gear has at least one second groove on its side near the first half gear, and the second groove and the central axis of the second half gear have the first preset distance; the first groove and the second groove are arranged opposite to each other to form a receiving groove, and the coil is disposed in the receiving groove; the conductive ring is disposed on the side of the first half gear away from the second half gear, and the central axis of the conductive ring coincides with the central axis of the first half gear.

[0013] Optionally, the non-metallic gear further includes: at least one first fixing hole, the first fixing hole penetrating the first half gear, and the first fixing hole and the central axis of the first half gear having a second preset distance; at least one second fixing hole, the second fixing hole penetrating the second half gear, and the second fixing hole and the central axis of the second half gear having a second preset distance; and at least one bolt, the threaded portion of the bolt sequentially penetrating the first fixing hole and the second fixing hole and connecting the first half gear and the second half gear.

[0014] Optionally, the non-metallic gear further includes: a protruding shaft, which is disposed on the side of the first half gear away from the second half gear, and the central axis of the protruding shaft coincides with the central axis of the first half gear, and the conductive ring is sleeved on the protruding shaft.

[0015] Optionally, the non-metallic gear further includes: a protruding sleeve disposed on the side of the second half gear away from the first half gear, and the central axis of the protruding sleeve coincides with the central axis of the second half gear; a shaft hole penetrating the protruding sleeve and the second half gear along the axial direction of the second half gear; a rotating shaft rotatably disposed, and one end of the rotating shaft being disposed in the shaft hole; at least one third fixing hole penetrating the protruding sleeve along the radial direction of the second half gear; and at least one fixing screw, the threaded portion of the fixing screw being threadedly disposed in the third fixing hole and abutting against the rotating shaft.

[0016] Optionally, the system further includes: at least one first wire, the first wire being connected in series between the conductive ring and the output terminal of the coil, and the input terminal of the first wire being connected to the output terminal of the coil, and the output terminal of the first wire being connected to the conductive ring; and / or, at least one second wire, the second wire being connected in series between the brush and the input terminal of the monitoring module, and the input terminal of the second wire being connected to the output terminal of the brush, and the output terminal of the second wire being connected to the input terminal of the monitoring module.

[0017] The technical solution provided in this disclosure may include the following beneficial effects:

[0018] Because the metal gears and non-metal gears mesh with each other, and the coil is mounted on the non-metal gear, the distance between the coil and the metal gear changes regularly when the metal gear and non-metal gear rotate synchronously. This causes a corresponding change in the magnetic flux of the coil, which in turn induces an electromotive force (EMF), resulting in a regular output of an AC signal. Furthermore, when the metal gear has local defects or broken teeth, the output signal of the coil will change. This allows the monitoring module to monitor the structural state of the metal gear based on the changes in the coil's output signal, enabling rapid and accurate fault diagnosis of the rotating machinery containing the metal gear. The induction power generation system based on magnetoresistance variation is simple in structure and easy to install. By generating an induced EMF through magnetoresistance variation, it solves the problem of limited sensor installation space and reduces limitations on structural integrity and dependence on external power sources.

[0019] Additional aspects and advantages of this disclosure will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this disclosure. Attached Figure Description

[0020] The above and / or additional aspects and advantages of this disclosure will become apparent and readily understood from the following description of the embodiments taken in conjunction with the accompanying drawings, in which:

[0021] Figure 1This is a schematic diagram of the structure of an induction power generation system based on magnetoresistive variation according to an embodiment of this disclosure;

[0022] Figure 2 This is a schematic cross-sectional view of a non-metallic gear in an induction power generation system based on magnetoresistive variation according to an embodiment of this disclosure.

[0023] Figure 3 This is a schematic diagram of the structure of a non-metallic gear in an induction power generation system based on magnetoresistive variation according to an embodiment of this disclosure;

[0024] Figure 4 This is a schematic diagram of the power generation principle of an induction power generation system based on magnetoresistive variation according to an embodiment of this disclosure;

[0025] Figure 5 This is a speed-voltage root mean square curve (at a speed of 50 rpm) proposed in an embodiment of this disclosure;

[0026] Figure 6 This is a speed-voltage root mean square curve (at a speed of 100 rpm) proposed in an embodiment of this disclosure;

[0027] Figure 7 This is a speed-voltage root mean square curve (at a speed of 150 rpm) proposed in an embodiment of this disclosure;

[0028] As shown in the figure: 1. Non-metallic gear, 11. First half gear, 12. Second half gear, 13. First groove, 14. Second groove, 15. First fixing hole, 16. Second fixing hole, 17. Protruding shaft, 18. Protruding sleeve, 19. Shaft hole, 110. Third fixing hole.

[0029] 2. Metal gear, 3. Coil, 4. Permanent magnet, 5. Iron core, 6. Slip ring, 7. First conductor, 8. Second conductor. Detailed Implementation

[0030] Embodiments of this disclosure are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are used only to explain this disclosure, and should not be construed as limiting this disclosure. Rather, embodiments of this disclosure include all variations, modifications, and equivalents falling within the spirit and scope of the appended claims.

[0031] Current monitoring solutions suffer from limitations in sensor installation locations, impact on structural integrity, and dependence on external power sources. Therefore, we attempted to analyze system faults by monitoring changes in magnetic resistance instead of using the mainstream method of collecting vibration and noise signals.

[0032] like Figure 1 , Figure 3 and Figure 4 As shown in the figure, this disclosure proposes an induction power generation system based on magnetoresistive changes, including: a metal gear 2, a non-metal gear 1, at least one coil 3, and a monitoring module (not shown in the figure). The metal gear 2 and the non-metal gear 1 are respectively rotatably arranged and mesh with each other. The coil 3 is arranged on the non-metal gear 1, and the central axis of the coil 3 and the non-metal gear 1 has a first preset distance. The coil 3 is used to generate an electrical signal based on the change in distance from the metal gear 2 when the metal gear 2 and the non-metal gear 1 rotate synchronously. The input end of the monitoring module is connected to the output end of the coil 3, and the monitoring module is used to monitor the structural state of the metal gear 2 according to the change of the electrical signal output by the coil 3.

[0033] It is understandable that, since the metal gear 2 and the non-metal gear 1 mesh with each other, and the coil 3 is set on the non-metal gear 1, when the metal gear 2 and the non-metal gear 1 rotate synchronously, the distance between the coil 3 and the metal gear 2 changes regularly, thereby changing the magnetic flux of the coil 3 accordingly. This causes the coil 3 to generate an induced electromotive force, realizing the regular output of the AC signal. Furthermore, when the metal gear 2 has local defects, broken teeth, or other problems, the electrical signal output by the coil 3 will change. Thus, the monitoring module can monitor the structural state of the metal gear 2 based on the changes in the electrical signal output by the coil 3. Based on the state monitoring of the metal gear 2, the rotating mechanical equipment where the metal gear 2 is located can be quickly and accurately diagnosed for faults.

[0034] Among them, the induction power generation system based on magnetoresistive change has a simple structure and is easy to install. It generates induced electromotive force by changing magnetoresistive change, which solves the problem of limited sensor installation positions and reduces the limitations of structural integrity and dependence on external power supply.

[0035] It should be noted that when the metal gear 2 rotates periodically, it not only drives the non-metallic gear 1 to rotate synchronously, but also causes a regular change in the distance between the coil 3 and the metal gear 2. When the coil 3 is closer to the metal gear 2, the magnetic reluctance decreases; when the coil 3 is farther away from the metal gear 2, the magnetic reluctance increases. Therefore, the magnetic flux in the coil 3 changes as the metal gear 2 and the non-metallic gear 1 rotate. With periodic rotation, a voltage is generated in the coil 3, producing a regularly changing alternating current signal. When the metal gear 2 experiences problems such as broken teeth, missing teeth, gear eccentricity, malfunctions, gear wear, or gear cracks, the electrical signal changes. Thus, by observing the changes in the electrical signal, the structural condition of the metal gear 2 can be accurately monitored.

[0036] As a component in rotating machinery, the metal gear 2 not only plays a transmission role but also drives the rotation of the non-metallic gear 1. The metal gear 2 is made of metal material, and the specific type of the metal gear 2 can be set according to actual needs without limitation. For example, the metal material of the metal gear 2 can be steel, iron, etc., and it can withstand a large load.

[0037] Non-metallic gear 1 is used to arrange coil 3 and to pair with metal gear 2 so as to rotate under the drive of metal gear 2. Non-metallic gear 1 is made of non-metallic material. The specific type of non-metallic gear 1 can be set according to actual needs and is not limited thereto. For example, the material of non-metallic gear 1 can be polymer materials such as resin and nylon.

[0038] Coil 3 is used to generate an electrical signal by utilizing the change in distance between itself and metal gear 2 while rotating with non-metallic gear 1. The specific type of coil 3 can be set according to actual needs and there are no restrictions on it.

[0039] The number of coils 3 can be set according to actual needs and is not limited. For example, there can be one, two, three, four, five, six, seven, eight, nine, ten, etc. When there are multiple coils 3, they are evenly distributed along the circumference of the non-metallic gear 1.

[0040] The monitoring module is used to monitor the structural state of the metal gear 2 based on the changes in the electrical signal output by the coil 3. The specific type of the monitoring module can be set according to actual needs and there are no restrictions on it. For example, the monitoring module can be a processor, controller, etc.

[0041] like Figures 5 to 7 As shown, the root mean square (RMS) values ​​of the voltage signal at various speeds are taken, and the speed-voltage RMS curve is plotted. This is the AC signal of the system at 50, 100, and 150 speeds with an embedded electromagnetic coil 3.

[0042] like Figure 1 As shown, in some embodiments, the system further includes at least one permanent magnet 4, which is disposed on the non-metallic gear 1 and is located at the end of the coil 3 away from the central axis of the non-metallic gear 1.

[0043] It is understandable that since the permanent magnet 4 is set on the non-metallic gear 1 and the permanent magnet 4 is located at the end of the coil 3 away from the central axis of the non-metallic gear 1, the permanent magnet 4 can use its own permanent magnetism to provide a stable magnetic field for the coil 3, thereby causing the coil 3 to generate an induced electromotive force based on the magnetic field. At the same time, the interaction between the permanent magnet 4 and the coil 3 can enhance the overall magnetic field strength, thereby improving the electromagnetic induction effect of the coil 3.

[0044] It should be noted that the specific type of permanent magnet 4 can be set according to actual needs, and there are no restrictions on it. For example, permanent magnet 4 can be a block magnet.

[0045] like Figure 1 As shown, in some embodiments, the system further includes: an iron core 5, which is disposed on the non-metallic gear 1, and the central axes of the iron core 5 and the non-metallic gear 1 have a first preset distance, and the coil 3 is sleeved on the iron core 5.

[0046] It is understandable that since the iron core 5 is set on the non-metallic gear 1 and the coil 3 is sleeved on the iron core 5, the iron core 5 can enhance the magnetic field strength of the coil 3, reduce the magnetic resistance of the coil 3, increase the inductance of the coil 3 and concentrate the magnetic lines of force, thereby improving the electromagnetic induction effect of the coil 3.

[0047] It should be noted that the permeability of the iron core 5 is much higher than that of air. After the iron core 5 is inserted, the magnetic field generated by the coil 3 will be concentrated in the iron core 5, thereby significantly enhancing the magnetic field strength. The high permeability of the iron core 5 greatly reduces the magnetic reluctance of the magnetic circuit, thereby increasing the magnetic flux and enhancing the electromagnetic induction effect of the induction coil 3. The addition of the iron core 5 can significantly increase the inductance of the induction coil 3, increasing its impedance to high-frequency signals in the AC circuit, thus playing a better role in filtering and energy storage. The iron core 5 can concentrate the magnetic lines of force around the coil 3, reducing magnetic field leakage and improving the utilization efficiency of the magnetic field.

[0048] The specific type of core 5 can be set according to actual needs, and there are no restrictions on it.

[0049] In some embodiments, the system further includes a load, the input of which is connected to the output of the coil 3.

[0050] It is understandable that, since the input terminal of the load is connected to the output terminal of coil 3, when the metal gear 2 and the non-metal gear 1 rotate synchronously, the AC signal generated by coil 3 can be transmitted to the load, thereby meeting the load's power demand and realizing the corresponding function.

[0051] It should be noted that by analyzing the current and voltage change curves of coil 3, the optimal load and maximum output power can be obtained, thereby realizing a scheme to drive the load using electrical energy generated by electromagnetic induction.

[0052] The specific type of load can be set according to actual needs and there are no restrictions on it. For example, the load can be some small power devices.

[0053] like Figure 3As shown, in some embodiments, the system further includes a fixed support (not shown) and a slip ring 6. The conductive ring of the slip ring 6 is mounted on the non-metallic gear 1, and the central axis of the conductive ring coincides with the central axis of the non-metallic gear 1. The conductive ring is connected to the output end of the coil 3. The brush of the slip ring 6 is mounted on the fixed support and is connected to the input end of the monitoring module.

[0054] Understandably, since the conductive ring of slip ring 6 is set on the non-metallic gear 1, and the central axis of the conductive ring coincides with the central axis of the non-metallic gear 1, and the conductive ring is connected to the output end of coil 3, the conductive ring can rotate synchronously with the non-metallic gear 1 while also transmitting the electrical signal output by coil 3. Furthermore, since the brush of slip ring 6 is set on a fixed support and is connected to the input end of the monitoring module, the brush can be fixedly arranged while also using the sliding contact between the brush and the conductive ring to stably transmit the electrical signal output by coil 3 to the monitoring module, thereby ensuring the accurate monitoring of the metal gear 2 by the monitoring module.

[0055] It should be noted that the fixed support is used to support the slip ring 6. The specific type of fixed support can be set according to actual needs, and there are no restrictions on it.

[0056] A slip ring 6, also known as a rotary electrical interface, slip ring, or rotary joint, is a device that transmits electricity, signals, or fluid between rotating and stationary components. Specifically, the slip ring 6 is used to establish a stable electrical path between the rotating coil 3 and the stationary monitoring module. The slip ring 6 includes a conductive ring (rotor) and brushes (stator), with the brushes mounted on the conductive ring and in sliding contact. The specific type of slip ring 6 can be configured according to actual needs and is not limited thereto.

[0057] like Figure 2 and Figure 3 As shown, in some embodiments, the non-metallic gear 1 includes: a first half gear 11 and a second half gear 12, which are detachably connected along the axial direction of the non-metallic gear 1. The first half gear 11 has at least one first groove 13 on its side near the second half gear 12, and the first groove 13 and the central axis of the first half gear 11 are at a first preset distance apart. The second half gear 12 has at least one second groove 14 on its side near the first half gear 11, and the second groove 14 and the central axis of the second half gear 12 are at a first preset distance apart. The first groove 13 and the second groove 14 are arranged opposite each other to form a receiving groove, and the coil 3 is disposed within the receiving groove. A conductive ring is disposed on the side of the first half gear 11 away from the second half gear 12, and the central axis of the conductive ring coincides with the central axis of the first half gear 11.

[0058] It is understandable that, since the first half gear 11 and the second half gear 12 are detachably connected along the axial direction of the non-metallic gear 1, and the first groove 13 and the second groove 14 are arranged opposite to each other to form a receiving groove, and the coil 3 is arranged in the receiving groove, the first half gear 11 and the second half gear 12 constitute a split non-metallic gear 1, which facilitates the disassembly and assembly of the coil 3 and makes the use of the system more convenient.

[0059] It should be noted that the first half gear 11 and the second half gear 12 are used to form a split non-metallic gear 1. It can also be understood that the non-metallic gear 1 is cut in half along the direction parallel to the side of the gear to obtain the first half gear 11 and the second half gear 12.

[0060] The first half-gear 11 is used to form the first groove 13 and the conductive ring for arranging the slip ring 6, and the second half-gear 12 is used to form the second groove 14. The specific types of the first half-gear 11 and the second half-gear 12 can be set according to actual needs and are not limited thereto.

[0061] like Figure 2 As shown, in some embodiments, the non-metallic gear 1 further includes: at least one first fixing hole 15, at least one second fixing hole 16, and at least one bolt (not shown in the figure). The first fixing hole 15 passes through the first half gear 11, and the central axes of the first fixing hole 15 and the first half gear 11 have a second preset distance. The second fixing hole 16 passes through the second half gear 12, and the central axes of the second fixing hole 16 and the second half gear 12 have a second preset distance. The threaded portion of the bolt passes through the first fixing hole 15 and the second fixing hole 16 in sequence and connects the first half gear 11 and the second half gear 12.

[0062] It is understandable that, since the threaded part of the bolt passes through the first fixing hole 15 on the first half gear 11 and the second fixing hole 16 on the second half gear 12 in sequence, the first half gear 11 and the second half gear 12 can be integrated into a non-metallic gear 1 by means of the bolt, thereby ensuring the stable generation of the electrical signal of the coil 3, and at the same time facilitating disassembly and maintenance, making it more convenient to use.

[0063] It should be noted that the first fixing hole 15 and the second fixing hole 16 are used to connect the first half gear 11 and the second half gear 12 with bolts. The first fixing hole 15 and the second fixing hole 16 are the threaded parts of the bolts. The specific type of bolt can be set according to actual needs and is not limited thereto. The bolts work with nuts to achieve a clamping and fixing effect.

[0064] The second preset distance is less than the first preset distance, meaning that the bolt is located on the inner side of the coil 3 near the central shaft of the non-metallic gear 1.

[0065] The number of bolts, the first fixing hole 15, and the second fixing hole 16 are in one-to-one correspondence. For example, the number of bolts, the first fixing hole 15, and the second fixing hole 16 can all be set to one, two, three, four, five, six, etc., without any limitation.

[0066] like Figure 2 As shown, in some embodiments, the non-metallic gear 1 further includes a protruding shaft 17, which is disposed on the side of the first half gear 11 away from the second half gear 12, and the central axis of the protruding shaft 17 coincides with the central axis of the first half gear 11, and a conductive ring is sleeved on the protruding shaft 17.

[0067] It is understandable that, since the protruding shaft 17 is located on the side of the first half gear 11 away from the second half gear 12, and the central axis of the protruding shaft 17 coincides with the central axis of the first half gear 11, the conductive ring is sleeved on the protruding shaft 17, so that the conductive ring can be arranged on the first half gear 11 using the protruding shaft 17, thereby using the conductive ring to stably transmit the electrical signal sent by the coil 3 to the monitoring module.

[0068] It should be noted that the protruding shaft 17 is used to arrange the conductive ring of the slip ring 6. The specific type of the protruding shaft 17 can be set according to actual needs, and there are no restrictions on it.

[0069] like Figure 2 As shown, in some embodiments, the non-metallic gear 1 further includes: a protruding sleeve 18, a shaft hole 19, a rotating shaft (not shown in the figure), at least one third fixing hole 110, and at least one fixing screw (not shown in the figure). The protruding sleeve 18 is disposed on the side of the second half gear 12 away from the first half gear 11, and the central axis of the protruding sleeve 18 coincides with the central axis of the second half gear 12. The shaft hole 19 passes through the protruding sleeve 18 and the second half gear 12 along the axial direction of the second half gear 12. The rotating shaft is rotatably disposed, and one end of the rotating shaft is disposed in the shaft hole 19. The third fixing hole 110 passes through the protruding sleeve 18 along the radial direction of the second half gear 12. The threaded portion of the fixing screw is threaded in the third fixing hole 110 and abuts against the rotating shaft.

[0070] It is understandable that, since the shaft hole 19 passes through the protruding sleeve 18 and the second half gear 12 along the axial direction of the second half gear 12, and one end of the rotating shaft is set in the shaft hole 19, the third fixing hole 110 passes through the protruding sleeve 18 along the radial direction of the second half gear 12, and the threaded part of the fixing screw is set in the third fixing hole 110 and abuts against the rotating shaft, the rotating shaft can be connected to the second half gear 12 by the abutment of the fixing screw, thereby ensuring the stable rotation of the non-metallic gear 1, and at the same time facilitating disassembly and maintenance, making it more convenient to use.

[0071] It should be noted that the protruding sleeve 18 is used to increase the contact area between the second half gear 12 and the rotating shaft, and to facilitate the arrangement of fixing screws. The specific type of the protruding sleeve 18 can be set according to actual needs, and there are no restrictions on it.

[0072] The shaft hole 19 is used to arrange one end of the rotating shaft. The size of the shaft hole 19 is adapted to the rotating shaft. The third fixing hole 110 is used to arrange the fixing screw. The size of the third fixing hole 110 is adapted to the fixing screw.

[0073] The specific type of the rotating shaft can be set according to actual needs and is not limited thereto. Among them, the rotating shaft can be provided with a boss structure, and correspondingly, a groove adapted to the boss is provided in the shaft hole 19. Through the cooperation of the boss and the groove, relative rotation between the rotating shaft and the second half gear 12 can be prevented.

[0074] The fixing screw is used to fix the rotating shaft and the second half gear 12. The specific type of fixing screw can be set according to actual needs and there is no restriction on it.

[0075] The number of fixing screws and the number of third fixing holes 110 are one-to-one. For example, the number of fixing screws and the number of third fixing holes 110 can be set to one, two, three, four, five, six, etc., and there is no restriction on this.

[0076] like Figure 3 As shown, in some embodiments, the system further includes at least one first wire 7, which is connected in series between the conductive ring and the output terminal of the coil 3, and the input terminal of the first wire 7 is connected to the output terminal of the coil 3, and the output terminal of the first wire 7 is connected to the conductive ring.

[0077] It is understandable that, since the input end of the first wire 7 is connected to the output end of the coil 3, and the output end of the first wire 7 is connected to the conductive ring, the conductive ring and the output end of the coil 3 can be connected by the first wire 7, thereby ensuring that the coil 3 can stably transmit electrical signals to the monitoring module.

[0078] It should be noted that the first wire 7 is used to connect the conductive ring and the output terminal of the coil 3. The specific type of the first wire 7 can be set according to actual needs and is not limited thereto. The first wire 7 can be arranged inside or outside the non-metallic gear 1.

[0079] like Figure 3 As shown, in some embodiments, the system further includes at least one second wire 8, which is connected in series between the brush and the input terminal of the monitoring module, and the input terminal of the second wire 8 is connected to the output terminal of the brush, and the output terminal of the second wire 8 is connected to the input terminal of the monitoring module.

[0080] It is understandable that since the input end of the second wire 8 is connected to the output end of the brush, and the output end of the second wire 8 is connected to the input end of the monitoring module, the brush and the input end of the monitoring module can be connected by the second wire 8, thereby ensuring that the coil 3 can stably transmit electrical signals to the monitoring module.

[0081] It should be noted that the second wire 8 is used to connect the brush and the input terminal of the monitoring module. The specific type of the second wire 8 can be set according to actual needs and there are no restrictions on it.

[0082] In the description of this disclosure, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Furthermore, in the description of this disclosure, unless otherwise stated, "a plurality of" means two or more.

[0083] Any process or method description in the flowchart or otherwise herein can be understood as representing a module, segment, or portion of code comprising one or more executable instructions for implementing a particular logical function or process, and the scope of preferred embodiments of this disclosure includes additional implementations in which functions may be performed not in the order shown or discussed, including substantially simultaneously or in reverse order depending on the function involved, as will be understood by those skilled in the art to which embodiments of this disclosure pertain.

[0084] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this disclosure. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0085] Although embodiments of the present disclosure have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present disclosure. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present disclosure.

Claims

1. An induction power generation system based on magnetoresistive variation, characterized in that, include: Metal gears, non-metal gears, at least one coil, and a monitoring module; The metal gear and the non-metal gear are respectively rotatably configured and mesh with each other; The coil is disposed on the non-metallic gear, and the coil and the central axis of the non-metallic gear have a first preset distance. The coil is used to generate an electrical signal based on the change in distance from the metal gear when the metal gear and the non-metallic gear rotate synchronously. The input terminal of the monitoring module is connected to the output terminal of the coil, and the monitoring module is used to monitor the structural state of the metal gear according to the changes in the electrical signal output by the coil. The system further includes: at least one permanent magnet disposed on the non-metallic gear, and the permanent magnet is located at the end of the coil away from the central axis of the non-metallic gear; The system further includes: an iron core, which is disposed on the non-metallic gear, and the central axis of the iron core and the non-metallic gear has the first preset distance, and the coil is sleeved on the iron core; The system further includes: a fixed support and a slip ring, wherein the conductive ring of the slip ring is disposed on the non-metallic gear, and the central axis of the conductive ring coincides with the central axis of the non-metallic gear; the conductive ring is connected to the output end of the coil; and the brush of the slip ring is disposed on the fixed support and is connected to the input end of the monitoring module. The non-metallic gear includes a first half gear and a second half gear, which are detachably connected along the axial direction of the non-metallic gear. The first half gear has at least one first groove on its side near the second half gear, and the first groove and the central axis of the first half gear have a first preset distance. The second half gear has at least one second groove on its side near the first half gear, and the second groove and the central axis of the second half gear have the first preset distance. The first groove and the second groove are arranged opposite to each other to form a receiving groove, and the coil is disposed in the receiving groove. The conductive ring is disposed on the side of the first half gear away from the second half gear, and the central axis of the conductive ring coincides with the central axis of the first half gear.

2. The induction power generation system based on magnetoresistive variation according to claim 1, characterized in that, The system also includes: The load is connected to the input terminal of the coil.

3. The induction power generation system based on magnetoresistive variation according to claim 1, characterized in that, The non-metallic gear also includes: At least one first fixing hole, the first fixing hole passing through the first half gear, and the first fixing hole and the central axis of the first half gear having a second preset distance; At least one second fixing hole, the second fixing hole passing through the second half gear, and the second fixing hole and the central axis of the second half gear having a second preset distance; At least one bolt, the threaded portion of which passes through the first fixing hole and the second fixing hole in sequence and connects the first half gear and the second half gear.

4. The induction power generation system based on magnetoresistive variation according to claim 1, characterized in that, The non-metallic gear also includes: A protruding shaft is disposed on the side of the first half gear away from the second half gear, and the central axis of the protruding shaft coincides with the central axis of the first half gear. The conductive ring is sleeved on the protruding shaft.

5. The induction power generation system based on magnetoresistive variation according to claim 1, characterized in that, The non-metallic gear also includes: A protruding sleeve is disposed on the side of the second half gear away from the first half gear, and the central axis of the protruding sleeve coincides with the central axis of the second half gear; A shaft hole, which extends through the protrusion and the second half gear along the axial direction of the second half gear; A rotating shaft, wherein the rotating shaft is rotatably disposed, and one end of the rotating shaft is disposed within the shaft hole; At least one third fixing hole, the third fixing hole extending radially through the protrusion sleeve along the second half gear; At least one fixing screw, the threaded portion of which is threaded into the third fixing hole and abuts against the rotating shaft.

6. The induction power generation system based on magnetoresistive variation according to claim 1, characterized in that, The system also includes: At least one first wire is connected in series between the conductive ring and the output terminal of the coil, and the input terminal of the first wire is connected to the output terminal of the coil, and the output terminal of the first wire is connected to the conductive ring. And / or, At least one second wire is connected in series between the brush and the input terminal of the monitoring module, and the input terminal of the second wire is connected to the output terminal of the brush, and the output terminal of the second wire is connected to the input terminal of the monitoring module.

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