A shaft pin type sensing component and a rotating assembly

Abstract

The present invention discloses a pin-type sensing assembly and a rotating assembly. The pin-type sensing assembly includes a pin body, a strain probe, a controller, a communication module, and a power generation mechanism. The interior of the pin body is hollow, and the strain probe is axially installed in the pin body. The power generation mechanism, the controller, and the communication module are all installed on the pin body. The strain probe, the power generation mechanism, and the communication module are all electrically connected to the controller. The strain probe is used to sense the deformation amount generated by the pin body under the action of a radial load. The power generation mechanism is used to convert the vibration energy of the pin body into electrical energy. The communication module is used to communicate with a terminal device, and it is used to send the detection result of the strain probe to the terminal device. In this way, the pin-type sensing assembly does not need an external power supply line and signal line, making its use more flexible.

Description

Technical Field

[0001] The present invention belongs to the field of sensors, and particularly relates to a pin - type sensing component and a rotating assembly. Background Art

[0002] Currently, existing pin - type sensors need to be powered by a power cord during operation, and at the same time, signal lines are required to output their sensing signals. This makes the pin - type sensors usually fixedly installed, and the rotating parts thereon (such as the grooved wheels of fixed pulleys or movable pulleys, belt pulleys, etc.) all need to be rotatably installed on the pin - type sensor through bearings (thus having certain requirements for the volume specifications of the rotating parts, that is, the inner ring needs to have a space for installing a bearing). However, in this way, the middle part of the pin - type sensor is under uneven stress for a long time, so it may be deformed and the sensitivity may be reduced. Summary of the Invention

[0003] In order to solve the above - mentioned technical problems, one of the purposes of the present invention is to provide a pin - type sensing component that does not require external power cords and signal lines.

[0004] To achieve the above purpose, the technical solution of the present invention is as follows: A pin - type sensing component includes a pin body, a strain probe, a controller, a communication module, and a power generation mechanism. The inside of the pin body is hollow, and the strain probe is axially installed in the pin body. The power generation mechanism, the controller, and the communication module are all installed on the pin body. The strain probe, the power generation mechanism, and the communication module are all electrically connected to the controller. The strain probe is used to sense the deformation amount generated by the pin body under the action of a radial load. The power generation mechanism is used to convert the vibration energy of the pin body into electrical energy. The communication module is used to communicate with a terminal device and send the results detected by the strain probe to the terminal device.

[0005] The beneficial effect of the above - mentioned technical solution is that: In this way, the pin - type sensing component converts vibration energy into electrical energy through its own power generation mechanism to supply power to the controller, so there is no need for an external power supply. In addition, the results measured by the strain probe are sent to the terminal device through the communication module, so there is no need for an external signal line. At this time, the pin - type sensing component can be independently installed.

[0006] In the above - mentioned technical solution, the communication module is a Bluetooth signal sending module.

[0007] The beneficial effect of the above - mentioned technical solution is that: It has a simple structure and high signal - sending sensitivity.

[0008] In the above - mentioned technical solution, the strain probe is a double - shear type resistance strain gauge.

[0009] The beneficial effect of the above - mentioned technical solution is that: It has high sensitivity.

[0010] The strain probe in the above technical solution is fixed on the side wall of the inner cavity of the shaft pin body.

[0011] The beneficial effect of the above technical solution is that when the shaft pin body is fully deformed, it can sensitively drive the strain probe to deform, thereby generating a corresponding electrical signal.

[0012] The power generation mechanism in the above technical solution includes a substrate and a vibration energy converter, wherein the vibration energy converter is mounted on the substrate, the substrate is mounted on the shaft pin body, and the vibration energy converter is electrically connected to the controller, and the vibration energy converter is used to convert the vibration energy of the shaft pin body into electrical energy.

[0013] The beneficial effect of the above technical solution is that: its structure is simple, so that vibration energy is converted into electrical energy and supplies power to the controller.

[0014] The vibration energy converter in the above technical solution includes multiple piezoelectric ceramic sheets and multiple cantilever columns. The multiple piezoelectric ceramic sheets are parallel to each other and distributed at intervals. Two adjacent piezoelectric ceramic sheets are connected by a cantilever column, and two adjacent cantilever columns are located at the opposite ends of the piezoelectric ceramic sheets between the two. The multiple piezoelectric ceramic sheets and the multiple cantilever columns are connected to form a wavy structure. One end of the wavy structure is connected to the substrate through a connecting column, and a mass block is provided at the other end of the wavy structure.

[0015] The beneficial effect of the above technical solution is that the vibration energy converter generates vibration when the shaft pin body vibrates, and converts the vibration energy into electrical energy.

[0016] The above technical solution also includes a battery, and the controller and the vibration energy converter are both electrically connected to the battery.

[0017] The beneficial effect of the above technical solution is that: in this way, electricity can also be stored by the battery to ensure that the axle pin body can be powered by the battery when it is not vibrating.

[0018] In the above technical solution, the battery is installed on the substrate.

[0019] The beneficial effect of the above technical solution is that the power generation mechanism has a high degree of integration.

[0020] In the above technical solution, one end of the shaft pin body is recessed with a mounting groove, the controller and the power generation mechanism are both installed in the mounting groove, an end cover is provided at the notch of the mounting groove, and the communication module is installed on the side of the end cover away from the mounting groove.

[0021] The beneficial effects of the above technical solution are as follows: In this way, the structure of the entire pin-type sensing assembly is made more compact, and the signal interference of the communication module is small.

[0022] The second object of the present invention is to provide a rotating assembly with a simple structure and high detection sensitivity.

[0023] To achieve the above object, another technical solution of the present invention is as follows: A rotating assembly includes a rotating member and the pin-type sensing assembly as described above. The rotating member is annular and is coaxially and fixedly installed in the middle of the pin body. The pin body is rotatably installed on a carrier.

[0024] The beneficial effects of the above technical solution are as follows: Its structure is simple, and the pin body can rotate synchronously with the rotating member. At this time, the force on the pin body is relatively uniform, and it will not bend due to long-term uneven force, thus affecting its sensitivity. Description of the Drawings

[0025] Figure 1 It is a cross-sectional view of the pin-type sensing assembly described in Embodiment 1 of the present invention;

[0026] Figure 2 It is a structural schematic diagram of the power generation mechanism described in Embodiment 1 of the present invention;

[0027] Figure 3 It is an electrical connection diagram of the controller described in Embodiment 1 of the present invention;

[0028] Figure 4 It is a structural schematic diagram of the rotating assembly described in Embodiment 2 of the present invention;

[0029] Figure 5 It is a structural schematic diagram of the electronic hanging scale described in Embodiment 3 of the present invention.

[0030] In the figure: 1 pin-type sensing assembly, 11 pin body, 111 installation groove, 112 end cover, 12 strain probe, 13 controller, 14 communication module, 15 power generation mechanism, 151 substrate, 152 vibration energy converter, 1521 piezoelectric ceramic sheet, 1522 cantilever column, 1523 connecting column, 1524 mass block, 153 storage battery, 2 rotating member, 3 carrier. Detailed Embodiments

[0031] It should be noted that, without conflict, the embodiments in the present invention and the features in the embodiments can be combined with each other.

[0032] In the description of the present invention, it should be understood that the orientation or positional relationships indicated by the terms "center", "longitudinal", "transverse", "up", "down", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationships shown in the drawings. These are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present invention. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first", "second", etc. may explicitly or implicitly include one or more of such features. In the description of the present invention, unless otherwise specified, the meaning of "plurality" is two or more.

[0033] In the description of the present invention, it should be noted that unless otherwise clearly specified and defined, the terms "mounted", "connected", "coupled" shall be construed in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be a direct connection or an indirect connection through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood through specific circumstances.

[0034] The present invention will be described in detail below with reference to the drawings and in conjunction with embodiments.

[0035] Embodiment 1

[0036] As Figures 1 - 3As shown in the figure, this embodiment provides a pin - type sensing component, which includes a pin body 11, a strain probe 12, a controller 13, a communication module 14, and a power generation mechanism 15. The inside of the pin body 11 is hollow, and the strain probe 12 is axially installed inside the pin body 11. The power generation mechanism 15, the controller 13, and the communication module 14 are all installed on the pin body 11. The strain probe 12, the power generation mechanism 15, and the communication module 14 are all electrically connected to the controller 13. The strain probe 12 is used to sense the deformation amount generated by the pin body 11 under the action of a radial load. The power generation mechanism 15 is used to convert the vibration energy of the pin body 11 into electrical energy. The communication module 14 is used to communicate with a terminal device, and it is used to send the results detected by the strain probe 12 to the terminal device. In this way, the pin - type sensing component converts vibration energy into electrical energy through its own power generation mechanism to supply power to the controller, so there is no need for an external power supply. In addition, the results measured by the strain probe are sent to the terminal device through the communication module, so there is no need for an external signal line. At this time, the pin - type sensing component can be installed independently. Among them, in this solution, the pin body actually serves as a rotating shaft. Therefore, when the pin body is stressed, it will generate a slight bending deformation amount. The strain probe also generates a slight deformation amount under the drive of the pin body and converts the deformation amount into an electrical signal output. Then, the communication module sends the electrical signal generated by the strain probe to the terminal device for processing. The magnitude of the deformation amount of the pin body is positively or negatively correlated with the strength of the electrical signal output by the strain probe. Among them, the pin body needs to have good strength, and high - quality carbon structural steels such as 35#, 45#, and 50# can be selected.

[0037] In the above - mentioned technical solution, the communication module 14 is a Bluetooth signal sending module, which has a simple structure and high signal - sending sensitivity. Of course, the communication module is not limited to the Bluetooth signal sending module, and a GPRS communication module or a wifi communication module can also be used. The terminal device can be a smart phone, and a corresponding APP program can be installed on the smart phone, so that the real - time signal value of the pin - type sensing component can be viewed through the APP.

[0038] In the above - mentioned technical solution, the strain probe 12 is a double - shear type resistance strain gauge, which has high sensitivity. It is strip - shaped, and the strain probe can be axially adhered to the side wall of the cavity of the pin body with glue, so that the strain probe can better deform synchronously with the pin body, thereby significantly improving the sensitivity of the strain probe.

[0039] In the above technical solution, the power generation mechanism 15 includes a substrate 151 and a vibration energy converter 152. The vibration energy converter 152 is installed on the substrate 151, and the substrate 151 is installed on the pin body 11. The vibration energy converter 152 is electrically connected to the controller 13. The vibration energy converter 152 is used to convert the vibration energy of the pin body 11 into electrical energy. Its structure is simple, so that the vibration energy can be converted into electrical energy and supplied to the controller. Among them, the substrate can be a PCB board, and a rectification circuit can be provided on the substrate to rectify the alternating current generated by the vibration energy converter into direct current, and then supply power to the controller (that is, the input end of the rectification circuit is electrically connected to the vibration energy converter, and the output end of the rectification circuit is electrically connected to the controller). The rectification circuit is a prior art and will not be elaborated here.

[0040] In the above technical solution, the vibration energy converter 152 includes a plurality of piezoelectric ceramic sheets 1521 and a plurality of cantilever columns 1522. The plurality of piezoelectric ceramic sheets 1521 are parallel to each other and are spaced apart. Adjacent two piezoelectric ceramic sheets 1521 are connected by one cantilever column 1522, and adjacent two cantilever columns 1522 are located at the different ends of the piezoelectric ceramic sheet 1521 therebetween. The plurality of piezoelectric ceramic sheets 1521 and the plurality of cantilever columns 1522 are connected into a wavy structure. One end of the wavy structure is connected to the substrate 151 through a connecting column 1523, and the other end of the wavy structure is provided with a mass block 1524. In this way, the vibration energy converter generates vibration when the pin body vibrates and converts the vibration energy into electrical energy. Among them, each piezoelectric ceramic sheet forms a power generation unit, and a plurality of piezoelectric ceramic sheets are all electrically connected to the controller through the rectification circuit. Preferably, the connecting column 1523 and the cantilever column can both be insulating parts, and the mass block can include an iron block in the insulating layer to increase the weight, and the insulating layer is connected and fixed to the corresponding end of the corresponding piezoelectric ceramic sheet. The plurality of piezoelectric ceramic sheets can be connected in series or in parallel and then electrically connected to the input end of the rectification circuit. Among them, the plurality of piezoelectric ceramic sheets are all parallel to the substrate.

[0041] The above technical solution further includes a storage battery. The controller 13 and the vibration energy converter 152 are both electrically connected to the storage battery. In this way, the storage battery can also be used for electricity storage to ensure that the pin body can be powered by the storage battery when it is not vibrating. The storage battery can be a lithium battery (a lithium battery pack of 1.5V or 3V, with a small volume).

[0042] In the above technical solution, the storage battery is installed on the substrate 151, so that the integration degree of the power generation mechanism is high.

[0043] In the above technical solution, one end of the axle pin body 11 is recessed with a mounting groove 111, the controller 13 and the power generation mechanism 15 are both installed in the mounting groove 111, and an end cover 112 is provided at the notch of the mounting groove 111. The communication module 14 is installed on the side of the end cover 112 away from the mounting groove 111. In this way, the structure of the entire axle pin type sensor assembly is more compact, and the signal interference of the communication module is small. The controller can be an ARM series single-chip microcomputer.

[0044] Compared with the prior art, the pin-type sensor assembly provided in this embodiment does not require additional power supply, nor does it require a signal line to connect to the terminal device. It can achieve self-power supply (i.e., relying on its own vibration to generate electricity). In addition, the pin-type sensor assembly does not require power lines and signal lines, which makes it more flexible to use.

[0045] Example 2

[0046] like Figure 4 As shown, this embodiment discloses a rotating assembly, including a rotating member 2 and a pin-type sensor assembly 1 as described in Example 1, wherein the rotating member 2 is annular and coaxially fixedly mounted in the middle of the pin body 11, and the pin body 11 is rotatably mounted on the carrier 3, and has a simple structure, and the pin body can rotate synchronously with the rotating member. At this time, the pin body is subjected to a relatively uniform force and will not bend due to long-term uneven force, thereby affecting its sensitivity. Among them, the rotating member can be a pulley, a groove wheel, etc. At this time, since the pin body always rotates synchronously with the rotating member, the electrical signal emitted by the strain probe will eventually be a relatively standard wave line shape. When the electrical signal emitted by the strain probe presents an irregular shape, it indicates that there is an abnormality in the entire rotating assembly.

[0047] Example 3

[0048] like Figure 5 As shown, this embodiment also provides an electronic crane scale, which differs from Embodiment 2 in that the rotating member may be a hook fixedly connected to the middle of the axle pin body, and the two ends of the axle pin body are rotatably connected to the carrier (the carrier is an n-shaped member, the two ends of the axle pin body are rotatably connected to the two ends of the carrier, and the upper end of the carrier has a hanging ring). At this time, the electronic crane scale can be used to measure the tension borne by the axle pin body in real time.

[0049] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above-described exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present invention. Any reference signs in the claims should not be construed as limiting the claims involved.

[0050] In addition, it should be understood that although this specification is described in terms of embodiments, not every embodiment only contains an independent technical solution. This narrative manner of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

[0051] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A pin - type sensing component, characterized in that, it includes a pin body (11), a strain probe (12), a controller (13), a communication module (14) and a power generation mechanism (15). The inside of the pin body (11) is hollow, and the strain probe (12) is axially installed inside the pin body (11). The power generation mechanism (15), the controller (13) and the communication module (14) are all installed on the pin body (11). The strain probe (12), the power generation mechanism (15) and the communication module (14) are all electrically connected to the controller (13). The strain probe (12) is used to sense the deformation generated by the radial load on the pin body (11). The power generation mechanism (15) is used to convert the vibration energy of the pin body (11) into electrical energy. The communication module (14) is used to communicate with a terminal device and is used to send the results detected by the strain probe (12) to the terminal device.

2. The pin - type sensing component according to claim 1, characterized in that, the communication module (14) is a Bluetooth signal sending module.

3. The pin - type sensing component according to claim 1, characterized in that, the strain probe (12) is a double - shear type resistance strain gauge.

4. The pin - type sensing component according to claim 3, characterized in that, the strain probe (12) is fixed on the side wall of the inner cavity of the pin body (11).

5. The pin - type sensing component according to claim 1, characterized in that, the power generation mechanism (15) includes a substrate (151) and a vibration energy converter (152). The vibration energy converter (152) is installed on the substrate (151). The substrate (151) is installed on the pin body (11), and the vibration energy converter (152) is electrically connected to the controller (13). The vibration energy converter (152) is used to convert the vibration energy of the pin body (11) into electrical energy.

6. The pin - type sensing component according to claim 5, characterized in that, the vibration energy converter (152) includes a plurality of piezoelectric ceramic sheets (1521) and a plurality of cantilever columns (1522). The plurality of piezoelectric ceramic sheets (1521) are parallel to each other and are spaced apart. Adjacent two piezoelectric ceramic sheets (1521) are connected by one cantilever column (1522), and adjacent two cantilever columns (1522) are located at the different ends of the piezoelectric ceramic sheet (1521) therebetween. The plurality of piezoelectric ceramic sheets (1521) and the plurality of cantilever columns (1522) are connected into a wavy structure. One end of the wavy structure is connected to the substrate (151) through a connecting column (1523), and the other end of the wavy structure is provided with a mass block (1524).

7. The pin - type sensing component according to claim 5, characterized in that, the power generation mechanism (15) further includes a storage battery (153). The controller (13) and the vibration energy converter (152) are both electrically connected to the storage battery (153).

8. The pin-type sensor assembly according to claim 7, It is characterized in that The storage battery (153) is mounted on the substrate (151).

9. The pin-type sensor assembly according to any one of claims 1 to 8, It is characterized in that A mounting groove (111) is recessed at one end of the shaft pin body (11), the controller (13) and the power generation mechanism (15) are both mounted in the mounting groove (111), an end cover (112) is provided at the notch of the mounting groove (111), and the communication module (14) is mounted on a side of the end cover (112) facing away from the mounting groove (111).

10. A rotating assembly, It is characterized in that It comprises a rotating part (2) and a pin-type sensor assembly (1) as described in any one of claims 1 to 9, wherein the rotating part (2) is annular and coaxially fixedly mounted in the middle of the pin body (11), and the pin body (11) is rotatably mounted on a carrier (3).

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