Frictional power generation system based on gear structure

Abstract

The application discloses a friction power generation system based on a gear structure, which comprises a gear, a detection electrode and a detection instrument. The gear is suitable for generating a friction charge when engaging and rotating. The detection electrode is connected with the gear. The detection electrode is suitable for generating a current signal under the action of the friction charge. The detection instrument is electrically connected with the detection electrode. The detection instrument is suitable for monitoring the current signal. The application has the advantages of strong anti-noise interference capability and high fault analysis precision.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of equipment diagnosis, in particular to a friction power generation system based on gear structure. BACKGROUND

[0002] Rotary mechanical equipment is the power transmission hub of industrial production, and effective fault diagnosis needs to be performed on the rotary mechanical equipment when the rotary mechanical equipment is working. The fault diagnosis system in the related art performs fault diagnosis on the rotary mechanical equipment by collecting noise generated by gear tooth surface friction, which is easily disturbed by noise in the environment and affects the monitoring effect. SUMMARY

[0003] The present application is made based on the discovery and understanding of the inventors on the following facts and problems:

[0004] The gear fault diagnosis system in the related art performs fault diagnosis on the gear transmission device by collecting noise generated by gear tooth surface friction and analyzing the collected noise to extract various fault features. The related art still has deficiencies in extracting non-stationary signals and strong noise interference signals, and the fault analysis precision is low.

[0005] The present application aims to at least solve one of the technical problems in the related art to some extent. To this end, an embodiment of the present application proposes a friction power generation system based on gear structure.

[0006] The friction power generation system based on gear structure of the embodiment of the present application comprises a gear, the gear is adapted to generate a friction charge when meshing and rotating; a detection electrode connected with the gear, the detection electrode is adapted to generate a current signal under the action of the friction charge; and a detection instrument electrically connected with the detection electrode, the detection instrument is adapted to monitor the current signal.

[0007] The friction power generation system based on gear structure of the embodiment of the present application has the advantages of strong anti-noise interference ability and high fault analysis precision.

[0008] In some embodiments, the friction power generation system based on gear structure comprises an electric slip ring, the electric slip ring comprises a rotating part and a stationary part, the rotating part is rotatable relative to the stationary part, the gear is connected with the rotating part, and the detection electrode and the rotating part are electrically connected.

[0009] In some embodiments, the detection electrode includes a first electrode and a second electrode, the gear includes a gear tooth, the gear tooth includes a first tooth and a second tooth, the first electrode is connected to the first tooth, the second electrode is connected to the second tooth, the rotating part has a first rotary joint and a second rotary joint, the stationary part has a first fixed joint and a second fixed joint, the first rotary joint is connected to the first electrode, the second rotary joint is connected to the second electrode, one end of the first fixed joint is electrically connected to the first rotary joint, one end of the second fixed joint is electrically connected to the second rotary joint, the first fixed joint and the second fixed joint are connected to the detection instrument, and the first electrode and the second electrode are adapted to generate an alternating current signal when the gear is engaged and rotated.

[0010] In some embodiments, the gear-based friction power generation system includes a first conductive ring, the first electrode has a plurality of first electrodes, the first tooth has a plurality of first teeth, the plurality of first teeth are arranged along the circumference of the gear, the plurality of first electrodes are arranged one-to-one on the plurality of first teeth, and the plurality of first electrodes are electrically connected to the first conductive ring, and the first conductive ring is electrically connected to the first rotary joint.

[0011] In some embodiments, the gear-based friction power generation system includes a second conductive ring, the second electrode has a plurality of second electrodes, the second tooth has a plurality of second teeth, the plurality of second teeth are arranged along the circumference of the gear, the plurality of first teeth and the plurality of second teeth are alternately arranged along the circumference of the gear, the plurality of second electrodes are arranged one-to-one on the plurality of second teeth, and the plurality of second electrodes are electrically connected to the second conductive ring, and the second conductive ring is electrically connected to the second rotary joint.

[0012] In some embodiments, the gear includes a gear tooth, the gear tooth includes a first tooth surface, a second tooth surface, and a tooth crest surface, the tooth crest surface is connected between the first tooth surface and the second tooth surface, and the first tooth surface and the second tooth surface are oppositely arranged, and the detection electrode is arranged on one of the first tooth surface and the second tooth surface.

[0013] In some embodiments, the first tooth surface is an engagement working surface, and the detection electrode is arranged on the second tooth surface.

[0014] In some embodiments, the gear-based friction power generation system includes an insulating layer, the insulating layer is connected to the detection electrode in a fit manner, and the detection electrode is located between the gear and the insulating layer.

[0015] In some embodiments, the gear comprises a first gear and a second gear, the first gear and the second gear are in mesh transmission and adapted to generate triboelectric charges, the detection electrode is connected to one of the first gear and the second gear.

[0016] In some embodiments, the gear structure based triboelectric system comprises the following fault diagnosis steps when in use:

[0017] S1: measuring the current signal of the gear at different rotating speeds by using the detection electrode;

[0018] S2: taking the root mean square value of the current signal at different rotating speeds;

[0019] S3: drawing a curve with the gear rotating speed as the horizontal coordinate and the root mean square value of the corresponding current signal as the total coordinate;

[0020] S4: analyzing the curve and making fault judgment. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 is a structural schematic diagram of the gear structure based triboelectric system according to an embodiment of the present application.

[0022] Figure 2 is Figure 1 is a partial enlarged view of A in FIG.

[0023] Figure 3 is Figure 1 is a sectional view of the gear tooth.

[0024] Figure 4 is a meshing schematic diagram of the first state.

[0025] Figure 5 is a meshing schematic diagram of the second state.

[0026] Figure 6 is a meshing schematic diagram of the third state.

[0027] Figure 7 is a meshing schematic diagram of the fourth state.

[0028] Figure 8 is a voltage root mean square value-rotating speed table.

[0029] Figure 9 is a voltage-time table when the rotating speed is 150 rpm.

[0030] Figure 10 is a voltage-time table when the rotating speed is 300 rpm.

[0031] Figure 11 is a voltage-time table when the rotating speed is 450 rpm.

[0032] Figure 12 is a voltage-time chart in the case of a rotation speed of 600 rpm.

[0033] Reference Signs:

[0034] Gear 1; Tooth 11; First tooth 111; Second tooth 112; First tooth face 1101; Second tooth face 1102; Addendum face 1103; First gear 101; Second gear 102;

[0035] Detection electrode 2; First electrode 21; Second electrode 22;

[0036] Electric slip ring 3; Stationary part 31; First fixed joint 311; Second fixed joint 312; Rotating part 32; First rotating joint 321; Second rotating joint 322;

[0037] First ring 41; Second ring 42;

[0038] Detection instrument 5. DETAILED DESCRIPTION

[0039] Embodiments of the present application are described in detail below with reference to the attached drawings. The embodiments described below are examples and are intended to explain the present application, and are not to be understood as limiting the present application.

[0040] A friction power generation system based on a gear structure according to an embodiment of the present application is described below with reference to the attached drawings.

[0041] As shown in FIG. 1, a friction power generation system based on a gear structure according to an embodiment of the present application includes a gear 1, a detection electrode 2, and a detection instrument 5. Figures 1 to 7 The gear 1 is adapted to generate a frictional charge when meshing rotation. Specifically, the gear 1 rubs against a gear 1 or a rack of a different material when meshing transmission, and a directional movement of electrons is generated in the rubbing to form a frictional charge, which is accumulated on the surface of the gear 1.

[0042] The detection electrode 2 is connected to the gear 1, and the detection electrode 2 is adapted to generate a current signal under the action of the frictional charge. Specifically, the detection electrode 2 is connected to the surface of the gear 1 to guide the frictional charge on the surface of the gear 1 to flow along the detection electrode 2, and a current signal is generated when the frictional charge flows directionally along the detection electrode 2.

[0043] As shown in FIG. 2, the gear 1 has a first state, a second state, a third state, and a fourth state from front to back in the process of meshing.

[0044] Figures 4 to 7 The gear 1 rotates along the n direction shown in FIG. 3. Figures 4 to 7

[0045] ​​like Figure 4 As shown, in the first state, the first gear 101 and the second gear 102 have not yet engaged in meshing friction. The surface charge of the first gear 101 and the second gear 102 is evenly distributed. At this time, the surface of the first gear 101 is in a neutral state and therefore does not exhibit electrical properties. The potential of the detection electrode 2 is zero.

[0046] like Figure 5 As shown, in the second state, the first gear 101 and the second gear 102 mesh and rub against each other. At this time, the negative charge on the surface of the first gear 101 travels along... Figure 5 The positive charge on the surface of the first gear 101 moves in the direction b and accumulates at the meshing friction point. In order to maintain an electrically neutral state, the positive charge on the surface of the first gear 101 moves along... Figure 5 The direction a shown in the diagram flows directionally through the detection electrode 2 and the detection instrument 5, thereby generating a current in the detection instrument 5. Since the detection instrument 5 is grounded, the detection electrode 2 is positively charged.

[0047] like Figure 6 As shown, in the third state, the first gear 101 and the second gear 102 are about to separate. The excess positive charge on the surface of the first gear 101 has completely flowed out of the first gear 101. Therefore, the surface charge of the first gear 101 and the second gear 102 is evenly distributed. At this time, the surface of the first gear 101 is in a neutral state and therefore does not exhibit electrical properties, and its potential is zero.

[0048] like Figure 7 As shown, in the fourth state, the first gear 101 and the second gear 102 are completely separated. Since the positive charge on the surface of the second gear 102 cannot attract the negative charge in the first gear 101 and thus constrain it at the meshing friction point, the negative charge inside the first gear 101 flows along... Figure 7 The positive charge moves directionally along the d direction to the detection electrode 2 in order to maintain a neutral state. Figure 7 The current in direction c flows through the detection instrument 5 to the detection electrode 2 and neutralizes the negative charge in the detection electrode 2, thereby generating a current in the detection instrument 5. Since the detection instrument 5 is grounded, the detection electrode 2 is negatively charged.

[0049] The detection instrument 5 is electrically connected to the detection electrode 2, and the detection instrument 5 is suitable for monitoring current signals. Specifically, the detection instrument 5 is electrically connected to the detection electrode 2 to detect current signals, and the detection instrument 5 includes a micropotentiometer and an amplifier circuit.

[0050] The triboelectric power generation based on the gear structure of this invention analyzes the working condition of gear 1 during meshing by detecting the triboelectric charge generated during the meshing transmission of gear 1. It is not easily affected by environmental noise, thus having the advantages of strong noise interference resistance and high fault analysis accuracy.

[0051] In some embodiments, the gear structure based frictional power generation system comprises an electric slip ring 3, the electric slip ring 3 comprises a rotating part 32 and a stationary part 31, the rotating part 32 is rotatable relative to the stationary part 31, the gear 1 is connected to the rotating part 32, and the detection electrode 2 is electrically connected to the rotating part 32.

[0052] Specifically, the rotating part 32 of the electric slip ring 3 is connected to the detection electrode 2, when the gear 1 rotates, the rotating part 32 rotates synchronously with the gear 1, and the stationary part 31 is stationary relative to the gear 1 to connect the rotating part 32 to the detection electrode 2. The stationary part 31 of the electric slip ring 3 is connected to the detection instrument 5, when the gear 1 rotates, the detection instrument 5 is stationary, and the stationary part 31 of the electric slip ring 3 is stationary relative to the detection instrument 5 to connect the stationary part 31 to the detection instrument 5.

[0053] Thus, the detection electrode 2 and the detection instrument 5 are connected through the electric slip ring 3, and when the detection electrode 2 rotates with the gear 1, the detection electrode 2 and the detection instrument 5 remain connected.

[0054] In some embodiments, the detection electrode 2 comprises a first electrode 21 and a second electrode 22, the gear 1 comprises a gear tooth 11, the gear tooth 11 comprises a first tooth 111 and a second tooth 112, the first electrode 21 is connected to the first tooth 111, the second electrode 22 is connected to the second tooth 112, the rotating part 32 has a first rotating joint 321 and a second rotating joint 322, the stationary part 31 has a first fixed joint 311 and a second fixed joint 312, the first rotating joint 321 is connected to the first electrode 21, the second rotating joint 322 is connected to the second electrode 22, one end of the first fixed joint 311 is electrically connected to the first rotating joint 321, one end of the second fixed joint 312 is electrically connected to the second rotating joint 322, the first fixed joint 311 and the second fixed joint 312 are connected to the detection instrument 5, and the first electrode 21 and the second electrode 22 are adapted to generate an alternating current signal when the gear 1 meshes and rotates.

[0055] Specifically, the first tooth 111 and the second tooth 112 are arranged alternately, when the gear 1 meshes and rotates, the first tooth 111 and the second tooth 112 rub alternately, and because the friction of the first tooth 111 and the second tooth 112 is not synchronized, the frictional charge accumulated on the first tooth 111 and the frictional charge accumulated on the second tooth 112 are different, resulting in a difference in potential between the surface of the first tooth 111 and the surface of the second tooth 112, i.e. a potential difference between the first tooth 111 and the second tooth 112.

[0056] The first electrode 21 is connected with the first tooth 111, and the second electrode 22 is connected with the second tooth 112. The first electrode 21 is connected with the electric slip ring 3 through the first rotating joint 321. The electric slip ring 3 conducts the first rotating joint 321 and the first fixed joint 311, so that the first fixed joint 311 is conducted with the first electrode 21. The second electrode 22 is connected with the electric slip ring 3 through the second rotating joint 322. The electric slip ring 3 conducts the second rotating joint 322 and the second fixed joint 312, so that the second fixed joint 312 is conducted with the second electrode 22. The first fixed joint 311 and the second fixed joint 312 are connected with the detection instrument 5.

[0057] Therefore, when the gear 1 is engaged to rotate, the first tooth 111 and the second tooth 112 are staggered to rub, so that the potentials on the first tooth 111 and the second tooth 112 are different. The first tooth 111, the detection instrument 5, and the second tooth 112 form a closed loop, so that the detection instrument 5 can detect the potential difference between the first tooth 111 and the second tooth 112, and obtain the alternating current signal generated when the gear 1 is engaged to rotate according to the potential difference between the first tooth 111 and the second tooth 112.

[0058] In some embodiments, the gear structure-based friction power generation system comprises a first conductive ring 41. The first electrode 21 is provided in plurality. The first tooth 111 is provided in plurality. The plurality of first teeth 111 are arranged at intervals along the circumference of the gear 1. The plurality of first electrodes 21 are provided on the plurality of first teeth 111 in one-to-one correspondence. The plurality of first electrodes 21 are electrically connected with the first conductive ring 41. The first conductive ring 41 is electrically connected with the first rotating joint 321.

[0059] Specifically, the first conductive ring 41 is coaxially arranged with the gear 1 and is fixedly connected with the gear 1. The first conductive ring 41 has electrical conductivity. The first conductive ring 41 is electrically connected with the plurality of first electrodes 21, so that the potential of the first conductive ring 41 is the same as that of the first electrode 21.

[0060] In some embodiments, the gear structure-based friction power generation system comprises a second conductive ring 42. The second electrode 22 is provided in plurality. The second tooth 112 is provided in plurality. The plurality of second teeth 112 are arranged at intervals along the circumference of the gear 1. The plurality of first teeth 111 and the plurality of second teeth 112 are alternately arranged along the circumference of the gear 1. The plurality of second electrodes 22 are provided on the plurality of second teeth 112 in one-to-one correspondence. The plurality of second electrodes 22 are electrically connected with the second conductive ring 42. The second conductive ring 42 is electrically connected with the second rotating joint 322.

[0061] Specifically, the first conductive ring 41 is coaxially arranged with the gear 1 and is fixedly connected with the gear 1. The first conductive ring 41 has electrical conductivity. The first conductive ring 41 is electrically connected with the plurality of first electrodes 21, so that the potential of the first conductive ring 41 is the same as that of the first electrode 21.

[0062] It can be understood that when the gear 1 is engaged, only one first tooth 111 and one second tooth 112 are in friction engagement at the same time, and the other first teeth 111 and second teeth 112 are electrically neutralized and thus not electrically active due to no surface accumulation of triboelectric charges. Therefore, the potential of the first conductive ring 41 is the potential of the first tooth 111 that is in friction engagement, and the potential of the second conductive ring 42 is the potential of the second tooth 112 that is in friction engagement.

[0063] Therefore, the detection instrument 5 is electrically connected to the first conductive ring 41 to detect the potential of the first conductive ring 41, and thus the potential of the first tooth 111 that is in friction engagement. The detection instrument 5 is electrically connected to the second conductive ring 42 to detect the potential of the second conductive ring 42, and thus the potential of the second tooth 112 that is in friction engagement.

[0064] The first conductive ring 41 and the second conductive ring 42 are coaxially arranged with and connected to the gear 1. Since the gear 1 is coaxially arranged with the rotating part, the first conductive ring 41 and the second conductive ring 42 are coaxially arranged with the rotating part. The first rotating joint 321 is electrically connected to the first conductive ring 41 through a wire, and the second rotating joint 322 is electrically connected to the second conductive ring 42 through a wire.

[0065] Therefore, when the gear 1 rotates, the first conductive ring 41 and the second conductive ring 42 rotate with the gear 1, and the rotating part also rotates with the first conductive ring 41 and the second conductive ring 42. Thus, the wire between the first rotating joint 321 and the first conductive ring 41 and the wire between the second rotating joint 322 and the second conductive ring 42 are prevented from being twisted together.

[0066] In some embodiments, the gear 1 includes a tooth 11, the tooth 11 includes a first tooth surface 1101, a second tooth surface 1102, and a tooth crest surface 1103, the tooth crest surface 1103 is connected between the first tooth surface 1101 and the second tooth surface 1102, and the first tooth surface 1101 and the second tooth surface 1102 are oppositely arranged. The detection electrode 2 is arranged on one of the first tooth surface 1101 and the second tooth surface 1102.

[0067] Specifically, the gear 1 is a involute gear 1, the gear 1 is provided with a tooth 11 on the outer circumferential side, the tooth 11 is an involute tooth, the tooth 11 has a first tooth surface 1101 and a second tooth surface 1102 in the circumferential direction of the gear 1, the tooth 11 has the first tooth surface 1101 in one circumferential direction of the gear 1, the tooth 11 has the second tooth surface 1102 in the other circumferential direction of the gear 1, and the tooth 11 has a tooth crest surface 1103 on the radially outer circumferential side. The detection electrode 2 is connected to one of the first tooth surface 1101 and the second tooth surface 1102 and completely covers the outer side of the one of the first tooth surface 1101 and the second tooth surface 1102.

[0068] Thus, on one hand, the larger contact area between the detection electrode 2 and the gear 1 enables more triboelectric charges to flow into the detection instrument 5 through the detection electrode 2, thereby improving the precision of the gear-structure-based triboelectric system of the embodiment of the present application; on the other hand, the detection electrode 2 is located close to the position of the meshing friction of the gear 1, thereby shortening the time for triboelectric charges to flow from the position of the meshing friction into the detection electrode 2, thereby improving the response speed of the gear-structure-based triboelectric system of the embodiment of the present application.

[0069] In some embodiments, the first tooth surface 1101 is a meshing working surface, and the detection electrode 2 is arranged on the second tooth surface 1102.

[0070] Specifically, the first tooth surface 1101 is a meshing working surface, i.e., when the gear 1 rotates in the forward direction, the first tooth surface 1101 meshes with the transmission member to generate triboelectric charges; and the second tooth surface 1102 is a non-meshing working surface, i.e., when the gear 1 rotates in the forward direction, the second tooth surface 1102 does not contact the transmission member.

[0071] Thus, the detection electrode 2 is arranged on the second tooth surface 1102 and covers the surface of the second tooth surface 1102, thereby avoiding abrasion of the detection electrode 2 when the gear 1 meshes, thereby improving the service life of the gear-structure-based triboelectric system of the embodiment of the present application.

[0072] In some embodiments, the gear-structure-based triboelectric system comprises an insulating layer, the insulating layer is attached to the detection electrode 2, and the detection electrode 2 is located between the gear 1 and the insulating layer.

[0073] Specifically, the insulating layer is located on the side of the detection electrode 2 away from the second tooth surface 1102, and the insulating layer is attached to the side of the detection electrode 2 away from the second tooth surface 1102 and completely covers the surface of the detection electrode 2.

[0074] Thus, when there are suspended particles in the air in the working environment of the gear 1, the insulating layer isolates the detection electrode 2 from the air, thereby avoiding transfer of the charges in the detection electrode 2 to the suspended particles, thereby affecting the detection precision of the gear-structure-based triboelectric system of the embodiment of the present application.

[0075] In some embodiments, the gear 1 comprises a first gear 101 and a second gear 102, the first gear 101 and the second gear 102 mesh to transmit and are adapted to generate triboelectric charges, and the detection electrode 2 is connected to one of the first gear 101 and the second gear 102.

[0076] Specifically, the friction power generation system based on gear structure in the embodiment of the present application comprises a first gear 101 and a second gear 102, the first gear 101 and the second gear 102 are involute gears 1, the first gear 101 and the second gear 102 are in mesh transmission, the materials of the first gear 101 and the second gear 102 are different, so that the first gear 101 and the second gear 102 rub against each other when the first gear 101 and the second gear 102 are in mesh transmission, thereby generating a frictional charge.

[0077] Thus, the detection electrode 2 is connected to one of the first gear 101 and the second gear 102, so that the frictional charge generated by the friction between the first gear 101 and the second gear 102 is detected by the friction power generation system based on gear structure in the embodiment of the present application, and the working state information of the mesh transmission of the first gear 101 and the second gear 102 is obtained.

[0078] In some embodiments, the detection electrode 2 is connected to the first gear 101, the first gear 101 is a driven gear, and the second gear 102 is a driving gear. Thus, the detection electrode 2 does not affect the operation of the second gear 102 when detecting the working state of the first gear 101.

[0079] In some embodiments, the friction power generation system based on gear structure comprises the following fault diagnosis steps when in use:

[0080] S1: measuring the current signal of the gear 1 at different rotational speeds by using the detection electrode 2. Specifically, the first gear 101 and the second gear 102 have different rotational speeds when in mesh transmission, and the detection instrument 5 can detect different current signals at different rotational speeds.

[0081] S2: taking the root mean square value of the current signal at different rotational speeds. Specifically, the root mean square value of the potential difference between the first electrode 21 and the second electrode 22 at different rotational speeds is taken to obtain the voltage root mean square value for subsequent numerical analysis.

[0082] S3: drawing a curve with the rotational speed of the gear 1 as the horizontal coordinate and the root mean square value of the corresponding current signal as the total coordinate. Thus, as shown in Figure 8 , a voltage root mean square value-rotational speed curve is drawn according to the voltage root mean square value and the rotational speed, and the relationship between the rotational speed of the gear 1 and the root mean square value of the current signal is obtained, so that the rotational speed of the gear 1 can be estimated according to the root mean square value of the current signal.

[0083] S4: analyzing the curve and making fault judgment. Specifically, as shown in Figures 9 to 12As shown, the voltage-time curves under different rotating speeds are drawn, time domain waveform analysis, FFT spectrum analysis, power spectrum analysis, cepstrum analysis, envelope demodulation analysis, high-order spectrum analysis, spectral kurtosis analysis and the like are performed on the voltage-time curves under different rotating speeds to obtain characteristic signals under different fault defects, so that the rotating machinery equipment is diagnosed according to the characteristic signals under different fault defects when continuously detecting the electric signals generated by the gear 1 tooth surface friction.

[0084] In the description of the present application, it needs to be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0085] In addition, the terms "first", "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise explicitly specified and limited.

[0086] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be understood in a broad sense, for example, it can be fixed connection, or detachable connection, or integrated; it can be mechanical connection, or electrical connection or communication with each other; it can be directly connected, or indirectly connected through an intermediate medium, or the internal communication or interaction relationship of two elements, unless otherwise explicitly limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0087] In the present application, unless otherwise explicitly specified and limited, the first feature "on" or "under" the second feature can be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature "above", "above" and "above" the second feature can be that the first feature is directly above or obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature can be that the first feature is directly below or obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0088] In this disclosure, the terms "one embodiment", "some embodiments", "an example", "a specific example", or "some examples" mean that a particular feature, structure, material, or characteristic is included in at least one embodiment or example of the present application. The illustrative appearances of the above-mentioned terms in various places in the specification are not necessarily referred to the same embodiment or example. Moreover, the particular features, structures, materials, or characteristics can be combined in any suitable manner in one or more embodiments or examples. Furthermore, the terms "comprising", "containing", "having" and "including" and their derivatives, are not intended to exclude other features, structures, materials, or characteristics not expressly mentioned. The terms "comprising", "containing", "having" and "including" and their derivatives are intended to be equivalent to the terms "consisting of" and "consisting essentially of" and their derivatives.

[0089] Although the embodiments of the present application have been shown and described above, it is understood that the above-described embodiments are exemplary, and are not intended to limit the present application, and the ordinary skilled in the art can make changes, modifications, replacements and variations to the above-described embodiments within the scope of the present application.

Claims

1. A triboelectric power generation system based on a gear structure, characterized in that, include: Gears adapted to generate triboelectric charge during meshing rotation; A detection electrode is connected to the gear and is adapted to generate a current signal under the action of the triboelectric charge. A detection instrument, electrically connected to the detection electrode, is adapted to monitor the current signal; The detection electrode includes a first electrode and a second electrode. The gear includes gear teeth, which include a first tooth and a second tooth. The first tooth and the second tooth are arranged alternately. When the gear meshes and rotates, the first tooth and the second tooth rub against each other. The first electrode is connected to the first tooth, and the second electrode is connected to the second tooth. The first electrode and the second electrode are adapted to generate an alternating current signal when the gear meshes and rotates. It also includes an electric slip ring, which includes a rotating part and a stationary part. The rotating part is rotatable relative to the stationary part. The gear is connected to the rotating part, and the detection electrode is electrically connected to the rotating part. When the gear rotates, the rotating part rotates synchronously with the gear, and the stationary part is connected to the detection instrument and remains stationary. The rotating part has a first rotary joint and a second rotary joint, and the stationary part has a first fixed joint and a second fixed joint. The first rotary joint is connected to the first electrode, and the second rotary joint is connected to the second electrode. One end of the first fixed joint is electrically connected to the first rotary joint, and one end of the second fixed joint is electrically connected to the second rotary joint. The first fixed joint and the second fixed joint are connected to the detection instrument. It also includes a first conductive ring, the first electrode is electrically connected to the first conductive ring, and the first conductive ring is electrically connected to the first rotary joint; It also includes a second conductive ring, the second electrode is electrically connected to the second conductive ring, and the second conductive ring is electrically connected to the second rotary joint; Both the first conductive ring and the second conductive ring are coaxially arranged with the gear and fixedly connected to the gear, and the first conductive ring and the second conductive ring are spaced apart. The gear teeth include a first tooth surface, a second tooth surface, and a tooth tip surface. The tooth tip surface is connected between the first tooth surface and the second tooth surface, and the first tooth surface and the second tooth surface are arranged opposite to each other. The first tooth surface is the meshing working surface, and the detection electrode is disposed on the second tooth surface and covers the surface of the second tooth surface.

2. The triboelectric power generation system based on a gear structure according to claim 1, characterized in that, There are multiple first electrodes and multiple first teeth. The multiple first teeth are arranged at intervals along the circumference of the gear. The multiple first electrodes are correspondingly disposed on the multiple first teeth, and the multiple first electrodes are electrically connected to the first conductive ring.

3. The triboelectric power generation system based on a gear structure according to claim 2, characterized in that, There are multiple second electrodes and multiple second teeth. The multiple second teeth are arranged at intervals along the circumference of the gear. The multiple first teeth and multiple second teeth are arranged alternately along the circumference of the gear. The multiple second electrodes are correspondingly disposed on the multiple second teeth, and the multiple second electrodes are electrically connected to the second conductive ring.

4. The triboelectric power generation system based on a gear structure according to claim 1, characterized in that, It includes an insulating layer, which is bonded to the detection electrode, and the detection electrode is located between the gear and the insulating layer.

5. The triboelectric power generation system based on a gear structure according to any one of claims 1-4, characterized in that, The gear includes a first gear and a second gear, which mesh and are adapted to generate triboelectric charge, and the detection electrode is connected to one of the first gear and the second gear.

6. The triboelectric power generation system based on a gear structure according to claim 5, characterized in that, The following troubleshooting steps are included during use: S1: Measure the current signal of the gear at different speeds using detection electrodes; S2: Take the root mean square value of the current signal at different speeds; S3: Plot a curve with the gear speed as the abscissa and the root mean square value of the corresponding current signal as the total coordinate; S4: Analyze the curve and determine the fault.

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