Self-generating device and rotation detection equipment

Abstract

The invention discloses a self-power-generation device and rotation detection equipment, the self-power-generation device comprises a rotor part, a stator part, a power generation coil and a permanent magnet, the rotor part, the stator part, the power generation coil and the permanent magnet are annular, the axis of the rotor part is horizontally distributed, the power generation coil is arranged on the rotor part, the permanent magnet is arranged on the stator part, and an annular cavity is formed in the rotor part; the stator part is arranged in the annular cavity and is coaxially and rotatably connected with the rotor part, the gravity center of the stator part is located below the axis of the stator part, when the rotor part rotates, the stator part is kept static, the power generation coil generates power, and when the rotor part rotates, the gravity center of the stator part moves downwards, so that the power generation coil generates power, and the power generation coil generates power. The stator part can be kept static relative to the outside in the rotor part, but for the rotor part, the rotor part and the stator part are in an opposite state, and the power generation coil rotates along with the rotor part and generates power.

Description

Technical Field

[0001] The present invention belongs to the field of self-generating rotation detection equipment, and in particular relates to a self-generating device and a rotation detection equipment. Background Art

[0002] With the improvement of mechanization level, the degree of coal crushing has also increased significantly. The amount of dust generated when the comprehensive mining (excavation) machine cuts the coal will also increase significantly. When rollers are used to transport coal underground, these dusts will bring various safety hazards. However, when ordinary battery-containing rotation detection equipment is installed on the roller to detect the movement status of the roller, due to the limited battery power, the battery of the rotation detection equipment needs to be replaced after the battery is exhausted, otherwise the rotation detection equipment cannot monitor the rotation working status of the roller for a long time; on the other hand, ordinary rotation detection equipment is exposed to the outside world and is easy to enter coal dust, which will also affect its life. In addition, in the case of damage, it is inconvenient to repair, disassemble and replace, and the entire device needs to be disassembled, which will affect production efficiency. Summary of the invention

[0003] In order to solve the above technical problems, the purpose of the present invention is to provide a self-generating device with a simple structure. When the axis is in a horizontal state, if the rotor part rotates, the stator part can remain stationary by itself so that the generating coil can cut the magnetic field lines to generate electricity.

[0004] In order to achieve the above-mentioned purpose, the technical solution of the present invention is as follows: a self-generating device, comprising a rotor part, a stator part, a generating coil and a permanent magnet, all of which are annular and have horizontally distributed axes, the generating coil is arranged on the rotor part, the permanent magnet is arranged on the stator part, the rotor part has an annular cavity, the stator part is placed in the annular cavity and is coaxially connected to the rotor part, the center of gravity of the stator part is located below the axis of the stator part, when the rotor part rotates, the stator part remains stationary, and the generating coil generates electricity.

[0005] The beneficial effect of the above technical solution is that by moving the center of gravity of the stator part downward, the stator part can remain stationary inside the rotor part relative to the outside world when the rotor part rotates, but for the rotor part, the rotor part and the stator part are in a relative state, and the generating coil rotates with the rotor part and generates electricity.

[0006] In the above technical solution, the stator component is in the shape of a circular ring plate, and a first embedding groove is concavely provided on the stator component, and the permanent magnet is embedded in the first embedding groove.

[0007] The beneficial effect of the above technical solution is that the stator component can be coaxially rotatably installed relative to the rotor component in the annular cavity, and the stator component serves as an installation carrier of the permanent magnet.

[0008] In the above technical solution, a plurality of first embedding grooves are concavely formed on the stator component, and the plurality of first embedding grooves are distributed at intervals in the circumferential direction, and one permanent magnet is embedded in each of the first embedding grooves.

[0009] The beneficial effect of the above technical solution is that: in this way, multiple permanent magnets can be arranged on the stator component at an annular interval, so that when the power generation coil rotates one circle with the rotor component, it can cut more magnetic field lines, thereby increasing its power generation.

[0010] In the above technical solution, the lower end of the stator component is further provided with a second embedding groove, and a counterweight block is embedded in the second embedding groove to move the center of gravity of the stator component downward.

[0011] The beneficial effect of the above technical solution is that by adding a counterweight block at the lower end of the stator component, the center of gravity of the stator component is moved downward, so that the stator component remains stationary when the rotor component rotates.

[0012] The rotor component in the above technical solution also includes a first end cover, an intermediate body and a second end cover, the intermediate body is cylindrical, the first end cover and the second end cover are both annular plates that match the inner hole of the intermediate body, and a first tube shaft is coaxially convexly provided in the middle of one side of the second end cover, the first end cover and the second end cover are both coaxially embedded in the intermediate body, and the first end cover and the second end cover are axially spaced apart in the intermediate body, the first tube shaft is located between the first end cover and the second end cover, and the end of the first tube shaft away from the second end cover is against the first end cover, the intermediate body, the first end cover and the second end cover together enclose the annular cavity, the stator component is installed in the annular cavity, and the inner hole of the first tube shaft constitutes the inner hole of the rotor component.

[0013] The beneficial effect of the above technical solution is that its structure is simple, so that the first end cover, the intermediate body and the second end cover can together enclose an annular member with an annular cavity inside. At this time, the entire annular cavity has good sealing performance and can better prevent dust from entering the annular cavity, and the stator member is rotatably arranged in the annular cavity.

[0014] In the above technical solution, an intermediate ring plate is arranged in the inner middle part of the intermediate body between the first end cover and the second end cover, and the power generation coil is embedded in the intermediate ring plate.

[0015] The beneficial effect of the above technical solution is that the intermediate ring plate can be used as a mounting carrier for the generating coil.

[0016] In the above technical solution, a plurality of the generating coils are provided, and the plurality of the generating coils are distributed circumferentially at intervals within the intermediate ring plate, and the plurality of the generating coils are connected in parallel or in series.

[0017] The beneficial effect of the above technical solution is that multiple generating coils can generate electricity at the same time, and the electric energy generated by them can be output in the form of series connection or parallel connection.

[0018] In the above technical solution, two stator components are provided, and the two stator components are respectively located on both sides of the middle ring plate.

[0019] The beneficial effect of the above technical solution is that the intermediate ring plate is located between the two stator components, thereby further improving the power generation of the entire self-generating device.

[0020] In the above technical solution, an annular gap is provided between the inner hole of the intermediate ring plate and the first tube axis, a second tube axis is protrudingly provided on one side of one of the stator components, the second tube axis is located outside the first tube axis, and the end of the second tube axis passes through the annular gap and is coaxially sleeved with the other stator component, and the second tube axis is rotatably connected to the intermediate ring plate and / or the first tube axis.

[0021] The beneficial effect of the above technical solution is that the two stator components can be bridged and connected via the second tube shaft and are integrally rotatably connected relative to the rotor component, which makes the structure of the entire self-generating device more compact and convenient for maintenance.

[0022] A second object of the present invention is to provide a rotation detection device which has a simple structure, can generate electricity by itself, and has good sealing performance.

[0023] In order to achieve the above-mentioned purpose, the technical solution of the present invention is as follows: a rotation detection device, comprising a rectifier module, an induction module, a communication module and the self-generating device as described above, wherein the induction module and the rectifier module are both arranged in the annular cavity and installed on the rotor member, the induction module is electrically connected to the generating coil through the rectifier module, and the communication module is electrically connected to the induction module, the rectifier module is used to convert the alternating current generated by the generating coil into direct current to power the induction module, and the communication module is used to transmit the data sensed by the induction module to the terminal device.

[0024] The beneficial effect of the above technical solution is that the rectifier module, the sensing module and the communication module can rotate synchronously with the rotor and be powered by the generating coil. At this time, the sensing module senses the parameters related to the rotation, and the communication module transmits the data sensed by the sensing module to the terminal device wirelessly. The rotation detection device has good sealing performance, and there is no need to worry about insufficient power. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a vertical view of the self-generating device according to Embodiment 1 of the present invention;

[0026] Figure 2 It is a front view of the self-generating device according to Embodiment 1 of the present invention;

[0027] Figure 3 for Figure 2 Sectional view at AA in the middle;

[0028] Figure 4 An exploded view of the self-generating device described in an embodiment of the present invention except for the generating coil and the permanent magnet;

[0029] Figure 5 It is a front view of the fixed ring plate in the intermediate body according to the embodiment of the present invention;

[0030] Figure 6 is a schematic structural diagram of the annular cover plate in an embodiment of the present invention;

[0031] Figure 7 This is one of the distribution diagrams of the first tube axis, the second tube axis and the intermediate ring plate in Example 1 of the present invention;

[0032] Figure 8 This is the second schematic diagram of the distribution of the first tube axis, the second tube axis and the intermediate ring plate in Example 1 of the present invention;

[0033] Fig. 9 This is the third schematic diagram of the distribution of the first tube axis, the second tube axis and the intermediate ring plate in Example 1 of the present invention;

[0034] Fig.10 This is a schematic diagram of electrical connections of the rotation detection device according to Embodiment 2 of the present invention;

[0035] Fig.11 This is a schematic structural diagram of the roller described in Example 2 of the present invention;

[0036] Fig.12 This is a schematic diagram of the assembly of the rotation detection device described in Example 2 on the roller.

[0037] In the figure: 1, rotor member; 11, first end cover; 12, intermediate body; 121, intermediate ring plate; 1211, fixed ring plate; 1212, annular cover plate; 1213, third embedding groove; 1214, clamping groove; 1215, clamping tooth; 1216, finger groove; 122, clamping hole; 13, second end cover; 131, first pipe shaft; 2, stator member; 2a, first stator member; 2b, second stator member; 21, first embedding groove; 22, second embedding groove; 23, counterweight; 24, second pipe shaft; 25, bushing tube; 3, power generation coil; 4, permanent magnet; 5, bearing; 10, self-generating device; 20, rectifier module; 30, induction module; 40, communication module; 50, battery; 100, rotation detection equipment; 200, roller; 210, mandrel; 220, ring groove. DETAILED DESCRIPTION

[0038] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention. The present invention is described in more detail by way of example with reference to the accompanying drawings in the following paragraphs. The advantages and features of the present invention will become clearer according to the following description and claims. It should be noted that the drawings are all in a very simplified form and are not in precise proportions, and are only used to conveniently and clearly assist in explaining the purpose of the embodiments of the present invention.

[0039] Example 1

[0040] like Figure 1-Figure 4 As shown, this embodiment provides a self-generating device, including a rotor member 1, a stator member 2, a power generation coil 3 and a permanent magnet 4, all of which are annular and have horizontally distributed axes. The power generation coil 3 is arranged on the rotor member 1, and the permanent magnet 4 is arranged on the stator member 2. The rotor member 1 has an annular cavity, and the stator member 2 is placed in the annular cavity and is coaxially rotatably connected with the rotor member 1. The center of gravity of the stator member 2 is located below the axis of the stator member 2. When the rotor member rotates, the stator member remains stationary, and power is generated by the power generation coil 3. By moving the center of gravity of the stator member downward, when the rotor member rotates, the stator member can remain stationary inside the rotor member relative to the outside world. However, for the rotor member, the rotor member and the stator member are in a relative state, and the power generation coil rotates with the rotor member and generates power.

[0041] like Figure 3 and Figure 4 As shown, in the above technical solution, the stator component 2 is in the shape of a circular ring plate, and a first embedding groove 21 is concavely provided on the stator component 2, and the permanent magnet 4 is embedded in the first embedding groove 21, so that the stator component can be coaxially rotatably installed relative to the rotor component in the annular cavity, and the stator component serves as an installation carrier of the permanent magnet.

[0042] In the above technical solution, the stator component 2 is provided with a plurality of first embedding grooves 21, and the plurality of first embedding grooves 21 are distributed circumferentially at intervals, and each of the first embedding grooves 21 is embedded with a permanent magnet 4, so that a plurality of permanent magnets can be arranged circumferentially at intervals on the stator component, so that when the power generation coil rotates one circle with the rotor component, it can cut more magnetic field lines, thereby increasing its power generation.

[0043] In the above technical solution, the lower end of the stator component 2 is further provided with a second embedding groove 22, and a counterweight block 23 is embedded in the second embedding groove 22 to move the center of gravity of the stator component 2 downward. By adding a counterweight block at the lower end of the stator component, the center of gravity of the stator component is moved downward, so that the stator component remains stationary when the rotor component rotates.

[0044] like Figure 1-Figure 4As shown, in the above technical solution, the rotor member 1 further includes a first end cover 11, an intermediate body 12 and a second end cover 13, the intermediate body 12 is cylindrical, the first end cover 11 and the second end cover 13 are both annular plates matched with the inner hole of the intermediate body 12, and a first tube shaft 131 is coaxially convexly provided in the middle of one side of the second end cover 13, the first end cover 11 and the second end cover 13 are both coaxially embedded in the intermediate body 12, and the first end cover 11 and the second end cover 13 are axially spaced apart in the intermediate body 12, and the first tube shaft 131 is located between the first end cover 11 and the second end cover 13. The first end cover 13 is disposed between the first and second end covers 13, and one end of the first tube shaft 131 away from the second end cover 13 is against the first end cover 11, the intermediate body 12, the first end cover 11 and the second end cover 13 are jointly enclosed to form the annular cavity, the stator component 2 is installed in the annular cavity, and the inner hole of the first tube shaft 131 constitutes the inner hole of the rotor component 1, and its structure is simple, so that the first end cover, the intermediate body and the second end cover can be jointly enclosed to form an annular component with an annular cavity inside, at this time, the sealing performance of the entire annular cavity is good, and dust can be better prevented from entering the annular cavity, and the stator component is rotatably arranged in the annular cavity.

[0045] like Figure 3 and Figure 4 As shown, in the above technical solution, an intermediate ring plate 121 is also provided in the inner middle part of the intermediate body 12 between the first end cover 11 and the second end cover 13, and the power generation coil 3 is embedded in the intermediate ring plate 121, so that the intermediate ring plate can be used as a mounting carrier for the power generation coil; preferably, a plurality of power generation coils 3 are provided, and the plurality of power generation coils 3 are distributed annularly at intervals in the intermediate ring plate 121, and the plurality of power generation coils 3 are connected in parallel or in series, so that the plurality of power generation coils can generate electricity simultaneously, and the electric energy generated by them can be output in the form of series or parallel connection.

[0046] like Figure 4-Figure 6As shown, the intermediate ring plate 121 in this embodiment may include a fixed ring plate 1211 and an annular cover plate 1212, the fixed ring plate 1211 is in the intermediate body, and its outer edge is coaxially connected to the intermediate body or integrally formed, a plurality of third embedding grooves 1213 are circumferentially spaced and recessed on one side of the fixed ring plate 1211, each of the third embedding grooves 1213 can be embedded with a power generation coil, and the annular cover plate 1212 can be fittedly mounted on the fixed ring plate to cover the notches of the plurality of third embedding grooves, in this embodiment, a plurality of recessed grooves 1214 are further recessed on one side of the fixed ring plate corresponding to the notches of the third embedding grooves, a plurality of teeth 1215 are convexly provided on the side of the annular cover plate close to the fixed ring plate, and the plurality of teeth correspond to the plurality of grooves one by one, each of the teeth can be inserted into the corresponding groove to clamp the annular cover plate on the fixed ring plate, so that the power generation coil is located in the intermediate ring plate.

[0047] like Figure 6 As shown, in this embodiment, a plurality of hand-gripping grooves 1216 may be further provided at the edge of the annular cover plate 1212, and the plurality of hand-gripping grooves correspond one-to-one to the plurality of first buckle teeth, and the positions of the corresponding hand-gripping grooves and first buckle teeth are aligned in the radial direction.

[0048] like Figure 3 and Figure 4 As shown, in the above technical solution, two stator components 2 are provided, and the two stator components 2 are respectively located on both sides of the middle ring plate 121, so that the middle ring plate is located between the two stator components, thereby further improving the power generation of the entire self-generating device.

[0049] like Figure 7-Figure 9As shown, in the above technical solution, there is an annular gap between the inner hole of the intermediate ring plate 121 and the first tube shaft 131, a second tube shaft 24 is convexly provided on one side of one of the stator components 2, the second tube shaft 24 is located outside the first tube shaft 131, and the end of the second tube shaft 24 passes through the annular gap and is coaxially sleeved with the other stator component 2, the second tube shaft 24 is rotatably connected with the intermediate ring plate 121 and / or the first tube shaft 131, so that the two stator components can be bridged through the second tube shaft and are rotatably connected relative to the rotor component as a whole, which This makes the structure of the entire self-generating device more compact and easy to maintain. Specifically, the second tube shaft can be coaxially rotatably connected with the first tube shaft (a bearing can be embedded between the two), and at this time, an annular gap is maintained between the second tube shaft and the inner hole of the intermediate ring plate; the second tube shaft can also be rotatably connected with the intermediate ring plate (a bearing 5 can be embedded between the two), and at this time, an annular gap is maintained between the second tube shaft and the first tube shaft; the second tube shaft can also be rotatably connected with the first tube shaft and the intermediate ring plate at the same time, and at this time, bearings can be embedded between the second tube shaft and the first tube shaft and between the second tube shaft and the intermediate ring plate.

[0050] like Figure 3 and Figure 4 As shown, in this embodiment, the two stator components 2 are respectively a first stator component 2a and a second stator component 2b, the second tube shaft is arranged on the first stator component 2a (one end of the second tube shaft is coaxially fixedly connected with the inner hole of the first stator component or is integrally formed), and the second stator component 2b is coaxially installed at the other end of the second tube shaft with interference fit. Preferably, an integrally formed bushing tube 25 can also be coaxially arranged at the inner hole of the second stator component 2b, and at this time, the bushing tube can be interference fit on the end of the second sleeve.

[0051] In this embodiment, the outer edges of the first end cover and the second end cover in contact with the intermediate body can be coated with glue for bonding and sealed at the same time. At the same time, the end of the first tube shaft can be in contact with the inner hole of the first end cover (the first end cover is sleeved on the end of the first tube shaft), and the contact between the two can also be coated with glue for bonding and sealing.

[0052] Example 2

[0053] like Fig.10As shown, this embodiment provides a rotation detection device, including a rectifier module 20, an induction module 30, a communication module 40 and the self-generating device 10 as described in Example 1, the induction module 30 and the rectifier module 20 are both arranged in the annular cavity and installed on the rotor member 1, the induction module 30 is electrically connected to the power generation coil 3 through the rectifier module 20, and the communication module 40 is electrically connected to the induction module 30, the rectifier module 20 is used to convert the alternating current generated by the power generation coil 3 into direct current to power the induction module 30, and the communication module 30 is used to transmit the data sensed by the induction module 30 to the terminal device, so that the rectifier module, the induction module 30 and the communication module 40 can rotate synchronously with the rotor member and be powered by the power generation coil. At this time, the induction module senses the parameters related to the rotation, and the communication module transmits the data sensed by the induction module to the terminal device in a wireless manner, the rotation detection device has good sealing performance, and there is no need to worry about the occurrence of insufficient power.

[0054] like Fig.11 and Fig.12 As shown, taking the roller 200 as an example (the end of the roller 200 is coaxially convexly provided with a coaxially fixed or coaxially rotating core shaft 210), the rotation detection device 100 is installed on the roller as follows: the core shaft can pass through the inner hole of the rotor member (there is an annular gap between the core shaft and the inner hole wall of the rotor member), and the rotor member is fixedly installed (it can be coaxially fixedly installed) on the corresponding end of the roller. At this time, the rotor member can rotate with the roller, and the rotation detection device keeps synchronous rotation with the roller to generate electricity for the operation of the induction module;

[0055] Specifically, an annular groove 220 is coaxially provided at the end of the roller corresponding to the edge of the core shaft, and the rotation detection device can be embedded in the annular groove 220;

[0056] Specifically, the first end cover or the second end cover can be retracted into the interior of the intermediate body so that a recessed groove is formed at the corresponding end of the rotor, and a plurality of clamping holes 122 (the number of clamping holes 122 can be four) are circumferentially spaced apart at one end of the intermediate body corresponding to the recessed groove, and the rotation detection device is inserted into the annular groove with interference fit (when the rotation detection device is inserted into the annular groove, the end with the recessed groove is facing outward). When the rotation detection device needs to be removed from the annular groove, it is sufficient to use a tool with a hook, insert the tip of the hook into the clamping hole, and slowly pull the rotation detection device out of the annular groove.

[0057] The sensing module in this embodiment may be at least one of a rotation speed sensor, an acceleration sensor and a temperature sensor (the sensing module 30 is used to sense the relevant parameters of the rotation of the roller 200, such as rotation speed, angular acceleration, temperature and other parameters). The communication module in this embodiment may adopt a Bluetooth module or a 5G communication module. A battery 50 fixed on the rotor member may also be electrically connected between the rectifier module and the sensing module in this embodiment.

[0058] The rectifier module in this embodiment may adopt an existing AC-DC module.

[0059] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Any ordinary technician in the industry can smoothly implement the present invention as shown in the drawings and described above. However, any equivalent changes, modifications and evolutions made by technicians familiar with the profession without departing from the scope of the technical solution of the present invention using the technical content disclosed above are all equivalent embodiments of the present invention. At the same time, any equivalent changes, modifications and evolutions made to the above embodiments based on the essential technology of the present invention are still within the protection scope of the technical solution of the present invention.

Claims

1. A self-generating device, characterized in that: The invention comprises a rotor component (1), a stator component (2), a power generation coil (3) and a permanent magnet (4), all of which are annular and have horizontally distributed axes. The power generation coil (3) is arranged on the rotor component (1), and the permanent magnet (4) is arranged on the stator component (2). The rotor component (1) has an annular cavity inside. The stator component (2) is placed in the annular cavity and is coaxially rotatably connected with the rotor component (1). The center of gravity of the stator component (2) is located below the center of its axis. When the rotor component rotates, the stator component remains stationary and generates electricity through the power generation coil (3).

2. The self-generating device according to claim 1, characterized in that: The stator component (2) is in the shape of a circular plate, and a first embedding groove (21) is concavely provided on the stator component (2), and the permanent magnet (4) is embedded in the first embedding groove (21).

3. The self-generating device according to claim 2, characterized in that: The stator component (2) is concavely provided with a plurality of first embedding grooves (21), and the plurality of first embedding grooves (21) are circumferentially spaced and distributed, and one of the permanent magnets (4) is embedded in each of the first embedding grooves (21).

4. The self-generating device according to claim 1, characterized in that: The lower end of the stator component (2) is also provided with a second embedding groove (22), and a counterweight block (23) is embedded in the second embedding groove (22) to move the center of gravity of the stator component (2) downward.

5. The self-generating device according to claim 1, characterized in that: The rotor member (1) further comprises a first end cover (11), an intermediate body (12) and a second end cover (13); the intermediate body (12) is cylindrical; the first end cover (11) and the second end cover (13) are both annular plates matched with the inner hole of the intermediate body (12); a first tube shaft (131) is coaxially convexly provided in the middle of one side of the second end cover (13); the first end cover (11) and the second end cover (13) are both coaxially embedded in the intermediate body (12); and the first end cover (11) and the second end cover (13) are coaxially embedded in the intermediate body (12). ) are distributed in the intermediate body (12) along the axial direction at intervals, the first tube shaft (131) is located between the first end cover (11) and the second end cover (13), and the end of the first tube shaft (131) away from the second end cover (13) is against the first end cover (11), the intermediate body (12), the first end cover (11) and the second end cover (13) are jointly enclosed to form the annular cavity, the stator component (2) is installed in the annular cavity, and the inner hole of the first tube shaft (131) constitutes the inner hole of the rotor component (1).

6. The self-generating device according to claim 5, characterized in that: An intermediate ring plate (121) is also provided in the inner middle portion of the intermediate body (12) between the first end cover (11) and the second end cover (13), and the power generation coil (3) is embedded in the intermediate ring plate (121).

7. The self-generating device according to claim 6, characterized in that: A plurality of the power generation coils (3) are provided, and the plurality of the power generation coils (3) are distributed in an annular direction at intervals within the intermediate ring plate (121), and the plurality of the power generation coils (3) are connected in parallel or in series.

8. The self-generating device according to claim 6, characterized in that: Two stator components (2) are provided, and the two stator components (2) are respectively located on both sides of the middle ring plate (121).

9. The self-generating device according to claim 8, characterized in that: An annular gap is provided between the inner hole of the intermediate ring plate (121) and the first tube shaft (131); a second tube shaft (24) is protrudingly provided on one side of one of the stator components (2); the second tube shaft (24) is located outside the first tube shaft (131); and the end of the second tube shaft (24) passes through the annular gap and is coaxially sleeved with the other stator component (2); the second tube shaft (24) is rotatably connected to the intermediate ring plate (121) and / or the first tube shaft (131).

10. A rotation detection device, characterized in that: The invention comprises a rectifier module (20), an induction module (30), a communication module (40) and a self-generating device (10) according to any one of claims 1 to 9, wherein the induction module (30) and the rectifier module (20) are both arranged in the annular cavity and mounted on the rotor component (1), the induction module (30) is electrically connected to the power generation coil (3) through the rectifier module (20), the communication module (40) is electrically connected to the induction module (30), the rectifier module (20) is used to convert the alternating current generated by the power generation coil (3) into direct current to supply power to the induction module (30), and the communication module (30) is used to transmit the data sensed by the induction module (30) to a terminal device.

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