CN219321606U

CN219321606U - Monitoring device for rotary equipment

Info

Publication number: CN219321606U
Application number: CN202223078781.5U
Authority: CN
Inventors: 陈仁祥; 洪志超
Original assignee: SKF AB
Current assignee: SKF AB
Priority date: 2022-11-18
Filing date: 2022-11-18
Publication date: 2023-07-07
Anticipated expiration: 2032-11-18

Abstract

The present disclosure relates to a rotating equipment monitoring device. The rotating equipment monitoring device comprises: the shell comprises a first accommodating space and a second accommodating space, wherein the second accommodating space is positioned at the tail end of the shell and is separated from the first accommodating space through a partition wall of the shell; the sensor assembly is arranged in the first accommodating space; an antenna circuit board on which an antenna is mounted, the antenna being configured to be communicatively connected with the sensor assembly and disposed in the second accommodating space; and the cover seals the antenna circuit board in the second accommodating space, wherein the first accommodating space is filled with an explosion-proof medium completely surrounding the sensor assembly.

Description

Monitoring device for rotary equipment

Technical Field

The present disclosure relates to a rotating equipment monitoring device.

Background

The bearing is an important part in mechanical equipment, and is mainly used for supporting a mechanical rotating body, reducing friction coefficient in the motion process and ensuring the rotation precision of the mechanical rotating body. Monitoring the health status of bearings in industrial equipment is an important means of ensuring proper operation of industrial equipment. In general, rotational device monitoring means, in particular bearing monitoring means, may be used to measure the speed, acceleration, temperature, vibrations etc. of the bearing, and the signals obtained from the measurements will be transmitted to e.g. a digital cloud platform for analytical diagnostics. If an abnormal alarm is diagnosed, the client is informed of maintenance or maintenance.

In some known solutions, the rotation device monitoring apparatus may perform the signal transmission in a wired manner, which makes the installation of the rotation device monitoring apparatus difficult and causes inconvenience to the industrial equipment. In other known solutions, the rotating equipment monitoring device may employ bluetooth low energy for signal transmission, but such solutions require the installation of additional gateways or routers to upload data to the cloud, thereby compromising installation and control costs. In still other known solutions, the rotating equipment monitoring device may employ RFID technology to achieve close range wireless transmission, but such solutions have a small amount of data to be transmitted, cannot support the amount of data required for fault diagnosis, and cannot be used for long range communication, such that the equipment condition cannot be monitored remotely.

There are a number of factors in the rotating equipment monitoring device that affect the performance of the antenna, especially the transmission efficiency, such as metals in the circuit board, conductors, explosion proof media such as AB glue, antenna headroom, etc. In particular, the explosion-proof medium used for satisfying the Nc sealing explosion-proof authentication requirement of the monitoring device of the rotating equipment has a great influence on the transmission efficiency. The above-mentioned various factors lead to the problem that the rotating equipment monitoring device using the wireless telecommunication technology cannot meet the requirements of both transmission efficiency and Nc sealing explosion-proof authentication. When transmission efficiency requirements are met, it is necessary to ensure that the antenna is not wrapped with an explosion-proof medium, such as AB glue, and remains sufficiently clear from the sensor PCBA motherboard, so the antenna is typically set on top. However, the antenna set-top scheme is generally not satisfactory for explosion proof certification.

Disclosure of Invention

It is, therefore, an object of the present disclosure to provide a rotating equipment monitoring device. The antenna in the rotating equipment monitoring device is not encapsulated by the explosion-proof medium and is positioned in a space separated from the sensor component and the related circuit, so that the rotating equipment monitoring device has higher transmission efficiency, can meet the Nc sealing explosion-proof level requirement, and can also use a narrow-band wireless communication technology, thereby realizing gateway-free long-distance wireless transmission. In addition, the monitoring sensitivity of the rotating equipment monitoring device is higher, the waterproof and temperature-resistant performance is good, and therefore the reliability is higher. Further, operating the rotating equipment monitoring device uses a combination of Near Field Communication (NFC) and bluetooth communication technologies with narrowband wireless communication technologies.

The above object is achieved by a rotating equipment monitoring device described below.

The present disclosure provides a rotating equipment monitoring device, the rotating equipment monitoring device comprising: the shell comprises a first accommodating space and a second accommodating space, wherein the second accommodating space is positioned at the tail end of the shell and is separated from the first accommodating space through a partition wall of the shell; the sensor assembly is arranged in the first accommodating space; an antenna circuit board on which an antenna is mounted, the antenna being configured to be communicatively connected with the sensor assembly and disposed in the second accommodating space; and a cover sealing the antenna circuit board within the second accommodation space, wherein the first accommodation space is filled with an explosion-proof medium completely surrounding the sensor assembly.

In one embodiment, the rotating equipment monitoring device further includes an adhesive portion that adheres the antenna circuit board to the partition wall of the housing.

In one embodiment, the housing includes a stepped protrusion at an inner sidewall of a distal end thereof, the protrusion extending in a circumferential direction of the inner sidewall.

In an embodiment, the rotating equipment monitoring device further includes a sealant filled between the cover and the protruding portion along a circumferential direction of the antenna circuit board.

In an embodiment, the antenna circuit board is disposed at a distance from an innermost side wall of the protruding portion to form a first gap for accommodating the sealant in a lateral direction.

In an embodiment, the adhesive portion is disposed at a distance from a circumferential edge of the antenna circuit board to form a second gap for accommodating the sealant in a lateral direction.

In one embodiment, a first opening is provided on the antenna circuit board, and a second opening at least partially aligned with the first opening is provided on the partition wall of the housing, wherein the explosion-proof medium is filled into the first accommodating space through the first opening and the second opening.

In one embodiment, the antenna circuit board is further provided with a first air discharge opening, and the partition wall of the housing is provided with a second air discharge opening at least partially aligned with the first air discharge opening.

In an embodiment, the rotating device monitoring apparatus further includes a first circuit board and a second circuit board disposed in the first accommodating space and spaced apart from each other, the sensor assembly is disposed on the first circuit board, and a near field communication module and a bluetooth module are disposed on the second circuit board.

In an embodiment, the antenna is an NB-IOT antenna, and the first circuit board is further provided with other NB-IOT module components that cooperate with the NB-IOT antenna and a radio frequency interface for connecting with the antenna.

In one embodiment, the rotating equipment monitoring device further comprises a power supply assembly disposed between the first circuit board and the second circuit board.

In one embodiment, the second circuit board is disposed proximate an inner surface of the planar sidewall of the housing.

In one embodiment, the housing includes a metal base, and the first circuit board and the second circuit board are respectively fixed to the metal base by threaded fasteners.

In one embodiment, an indicator light and a light guide member are disposed at the top of the first circuit board near the partition wall of the housing, and light emitted from the indicator light is emitted toward the outside of the top of the housing by the guide of the light guide member.

In one embodiment, the antenna circuit board is provided with a first opening, the partition wall of the housing is provided with a second opening aligned with the first opening, and the light guide member is disposed through the first opening and the second opening.

Advantageous effects of the present disclosure are as follows.

In the rotating equipment monitoring device described above, the antenna is not enclosed by the explosion-proof medium and is located in a space separated from the sensor assembly and related circuitry, so the rotating equipment monitoring device has high transmission efficiency and can meet Nc sealing explosion-proof class requirements. In addition, the sensor component is encapsulated by using the explosion-proof medium, so that the monitoring sensitivity of the rotating equipment monitoring device is high, the temperature resistance is good, and the waterproof performance of the rotating equipment monitoring device is good by using the sealant and the gap, so that the reliability is high.

Specifically, the rotating equipment monitoring device can achieve average transmission efficiency of more than 30%, so that enough transmission coverage can be met, communication power consumption is reduced, and service life of the sensor is prolonged. Based on the transmission efficiency, the rotating device monitoring apparatus of the present disclosure may use a narrowband wireless communication technology, such as narrowband internet of things (Narrow Band Internet of Things, NB-IOT), to implement long-distance wireless transmission, so that the function of long-distance communication and uploading data to the cloud may be implemented, and the function is not dependent on a gateway.

Further, the rotary equipment monitoring device with the 2-zone explosion-proof level can be used for areas with gas explosion risks and areas with dust explosion risks, and the requirement of customers on explosion prevention is met.

In addition, the rotating equipment monitoring device disclosed by the utility model is operated by using the combination of NFC and Bluetooth communication technologies and narrowband wireless communication technologies, so that the rotating equipment monitoring device can be conveniently activated, and various parameters of the rotating equipment monitoring device can be flexibly set.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present disclosure, the drawings of the embodiments of the present disclosure will be briefly described below. Wherein the drawings are designed solely to illustrate some embodiments of the disclosure and not to limit all embodiments of the disclosure thereto. In the accompanying drawings:

fig. 1 shows a schematic view of a known bearing monitoring device in a highly schematic manner;

FIG. 2 is a schematic diagram highly schematically illustrating a rotating equipment monitoring device according to one embodiment of the present disclosure;

FIG. 3 schematically illustrates a schematic view of a portion of a rotating equipment monitoring device according to one embodiment of the present disclosure;

FIG. 4 schematically illustrates an enlarged schematic view of a portion of a rotating equipment monitoring device according to one embodiment of the present disclosure;

fig. 5 schematically illustrates a schematic view of an antenna circuit board and an adhesive portion of a rotating equipment monitoring device with an antenna mounted thereon according to one embodiment of the present disclosure;

FIG. 6 illustrates an external schematic view of a rotating equipment monitoring device according to one embodiment of the present disclosure; and

fig. 7 illustrates an internal schematic diagram of a rotating equipment monitoring device according to one embodiment of the present disclosure.

Detailed Description

In order to make the objects, technical solutions and advantages of the technical solutions of the present disclosure more clear, the technical solutions of the embodiments of the present disclosure will be clearly and completely described below with reference to the accompanying drawings of specific embodiments of the present disclosure. Like reference numerals in the drawings denote like parts. It should be noted that the described embodiments are some, but not all embodiments of the present disclosure. All other embodiments, which can be made by one of ordinary skill in the art without the need for inventive faculty, are within the scope of the present disclosure, based on the described embodiments of the present disclosure.

Unless defined otherwise, technical or scientific terms used herein should be given the ordinary meaning as understood by one of ordinary skill in the art to which this disclosure belongs. The terms "first," "second," and the like in the description and in the claims, do not denote any order, quantity, or importance, but rather are used to distinguish one element from another. Likewise, the terms "a" or "an" and the like do not necessarily denote a limitation of quantity. The word "comprising," "comprising," or "having" and the like means that elements or items preceding the word are meant to be encompassed by the element or item recited following the word and equivalents thereof, without excluding other elements or items. The terms "connected" or "connected" and the like are not limited to the physical or mechanical connection or communication shown in the drawings, but may include connection or communication equivalent thereto, whether direct or indirect. "upper", "lower", "left", "right", etc. are used merely to indicate relative positional relationships, which may also be changed when the absolute position of the object to be described is changed.

Various implementations of a rotating equipment monitoring device according to embodiments of the present disclosure are described in detail below with reference to fig. 1 through 7.

In fig. 1 a known bearing monitoring device is shown, comprising a housing 1 'and an antenna 2' and a sensor assembly 3 'located within the housing 1'. Furthermore, the housing 1' is filled with an explosion-proof medium, for example AB glue, to completely encapsulate the antenna 2' and the sensor assembly 3'. The sensor assembly 3' comprises various sensors and a main circuit board on which they are arranged, and is therefore schematically shown as a plate. The antenna 2' may also be provided on the main circuit board. In the bearing monitoring device shown in fig. 1, the transmission efficiency is low due to the influence of the explosion-proof medium on the antenna 2'. In addition, the antenna 2' is disposed parallel to the main circuit board and is closely spaced from the main circuit board in the bearing monitoring device shown in fig. 1, which further affects the transmission efficiency. Thus, the bearing monitoring device of fig. 1 cannot be used for long-range wireless transmission.

A highly schematic diagram of one embodiment of a rotating equipment monitoring device according to the present disclosure is shown in fig. 2, and the specific structure of the rotating equipment monitoring device may be different from that shown in fig. 2. As shown in fig. 2, the rotating equipment monitoring device includes a housing 1, an antenna circuit board 2 on which an antenna is mounted, and a sensor assembly 3. The antenna is an NB-IOT antenna, so that low-power consumption long-distance signal transmission can be realized. The rotating equipment monitoring device of the present disclosure may be particularly a bearing monitoring device for measuring the speed, acceleration, temperature, vibration, etc. of a bearing. Of course, the present disclosure is not limited to measuring bearings, but may also be used to measure parameters of other rotating equipment.

The housing 1 comprises a first accommodation space 4 and a second accommodation space 5, which second accommodation space 5 is located at the end of the housing 1 and is separated from the first accommodation space 4 by a partition wall 6 of the housing 1. For example, the housing 1 may be made mostly of plastic and may have a metal base. The housing 1 may have a substantially cylindrical form, and the antenna circuit board 2 may have a shape matching the circular cross section of the housing 1, for example, a substantially circular plate-like member (see fig. 5), may have a thickness of about 1 mm.

The sensor assembly 3 is arranged in the first accommodating space 4, and the first accommodating space 4 is filled with an explosion-proof medium completely surrounding the sensor assembly 3. The explosion-proof medium can prevent the explosion caused by the reaction of the electric arc and spark possibly generated in the working process of the rotating equipment monitoring device with the external air. The bursting-disk medium may be an AB glue, for example a castable two-component casting resin based on polyurethane, consisting of a filler component A and an isocyanate hardener B (MDI). The sensor assembly 3 may be provided on or part of, for example, a main circuit board, i.e., a PCBA board, including but not limited to temperature and gravitational acceleration sensor chips, battery and sensor system power management devices, and various electronic components. The sensor assembly 3 may comprise a sensor chip for sensing the speed, acceleration, temperature etc. of the bearing to be monitored. For example, the sensor may be a piezoelectric or MEMS sensor. The signals sensed by the sensors may be processed and calculated by the microcontroller MCU after passing through signal processing circuitry (e.g., amplifiers, filters) on the PCBA board, and then transmitted by the NB-IOT module through the antenna to the cloud remote control. The sensed data can be transmitted to the cloud end through the NB-IOT antenna, fault diagnosis is conducted on the data stored in the cloud end, and then a user is informed of maintaining equipment. For example, the data may include signals indicative of temperature data or vibration data, and may also include alarm signals indicative of temperature or vibration.

As shown in fig. 2, the antenna circuit board 2 or antenna is arranged substantially perpendicular to the sensor assembly 3, which further avoids the transmission rate effects of the antenna being arranged parallel to the main circuit board.

For signal transmission with the sensor assembly 3, the antenna mounted on the antenna circuit board 2 is configured for a communication connection, e.g. a radio frequency wired connection, with the sensor assembly 3 and is arranged in the second accommodation space 5. Specifically, the sensor assembly 3 or the main circuit board located in the first accommodation space 4 may be electrically connected with the antenna located in the second accommodation space 5 through a cable.

As shown in fig. 3, the rotating equipment monitoring device further includes a cover 7, the cover 7 sealing the antenna circuit board 2 within the second accommodation space 5. For example, the cover 7 may be a transparent plastic cover, such as a plastic sheet or film made of PC or PET material. By packaging the antenna with a plastic cover, the additional impact of external structures (e.g., the cover) on the antenna transmission efficiency can be reduced. Of course, the cover 7 may also be made of an opaque material, which meets the requirements of the IP69K explosion-proof seal, and which is kept identical in appearance to the housing, for example both having the same color. Therefore, the cover also has a decorative effect, so that the rotating equipment monitoring device is more attractive.

In an embodiment, the rotating equipment monitoring device further includes an adhesive portion 9, and the adhesive portion 9 adheres the antenna circuit board 2 to the partition 6 of the housing 1. The partition wall 6 may be a top wall of the housing 1. The adhesive portion 9 may be a double-sided tape or an adhesive. When a double-sided tape is used as the adhesive portion 9, cutting may be performed according to the specific form of the antenna circuit board 2, the case 1. Furthermore, the rotating equipment monitoring device may further comprise an additional adhesive part for adhering the cover 7 to the antenna circuit board 2.

Further, the housing 1 includes a stepped protrusion 10 at an inner side wall of its tip, the protrusion 10 extending in a circumferential direction of the inner side wall. The protruding portion 10 and the partition wall 6 form a second accommodation space 5, and the cover 7 closes the second accommodation space 5. For example, the protruding portion 10 may be integrally formed with the housing 1. Of course, the projection 10 may also be a separate component.

As shown in fig. 3, the rotating equipment monitoring device further includes a sealant 8, and the sealant 8 is filled between the cover 7 and the protruding portion 10 in the circumferential direction of the antenna circuit board 2. Only the sealant 8 on one side of the antenna circuit board 2 is schematically shown in fig. 3. Specifically, most of the sealant 8 is filled between the step of the protrusion 10 and the cover 7. In this way, a good sealing of the rotating equipment monitoring device can be achieved. For example, the sealant 8 is a waterproof adhesive, which allows the rotating equipment monitoring device of the present disclosure to also have a good waterproof performance.

As shown in the enlarged view of fig. 4, the antenna circuit board 2 is disposed at a distance as shown by d1 in fig. 4 from the innermost side wall of the protruding portion 10 to form a first gap for accommodating the sealant 8 in the lateral direction. d1 is, for example, about 0.2mm. The innermost wall as described herein is the innermost wall of the protrusion 10. Further, the adhesive portion 9 is provided at a distance from the circumferential edge of the antenna circuit board 2 to form a second gap for accommodating the sealant 8 in the lateral direction. The lateral direction is the horizontal direction in fig. 4. By additionally providing the gap, the sealant 8 can flow from above the step of the protruding portion from between the peripheral edge of the antenna circuit board and the innermost wall of the protruding portion 10 into below the antenna circuit board 2, thus achieving a more excellent sealing waterproof effect.

Further, the width of the step of the protrusion 10 shown in fig. 4 is indicated by d2, which is, for example, about 0.8mm. The sum of the thicknesses of the antenna circuit board 2, the cover 7 and the adhesive part 9 (optionally including the thickness of the further adhesive part) may be denoted by h1, which is for example about 1.9mm. The sum of the thicknesses of the antenna circuit board 2 and the adhesive portion 9 may be about 1.05mm. The volume of the second accommodation space 5 of the present disclosure is smaller, so that the size of the rotating equipment monitoring device is smaller, and thus the volume requirement for the application environment is lower. It should be noted that the above dimensions are for illustration only and do not limit embodiments of the present disclosure.

Referring again to fig. 3, the antenna circuit board 2 is provided with a first opening 11, and the partition wall 6 of the housing 1 is provided with a second opening 14 at least partially aligned with the first opening 11. The explosion-proof medium described above can be filled into the first accommodation space 4 through the first opening 11 and the second opening 14. Furthermore, the antenna circuit board 2 is provided with a first air discharge opening 12, and the partition wall 6 of the housing 1 is provided with a second air discharge opening 15 at least partially aligned with the first air discharge opening 12. The vent opening is provided to vent air in the first accommodation space 4 when filling the explosion-proof medium. As shown in fig. 5, when the adhesive portion 9 is a double-sided tape, the adhesive portion 9 is also provided with a third opening 16 and a third air discharge opening 17. The third opening 16 is at least partially aligned with the first and

second openings

11, 14 and the third exhaust opening 17 is at least partially aligned with the first and

second exhaust openings

12, 15. The number of each of the first openings 11, the second openings 14, and the third openings 16 may be two, but of course, other numbers are also possible. In addition, the antenna circuit board 2 is further provided with a first opening 13 for an indicator lamp, such as an LED lamp, the partition wall 6 of the housing 1 is provided with a second opening aligned with the first opening 13, and the adhesive part 9 is provided with a third opening 18 aligned with both. The LED lamp is used for displaying the health state of the bearing. For example, the LED lamp may be configured to emit red, green, or other colors of light depending on the voltage applied thereto to represent different states of the bearing. Further, the antenna circuit board 2 may be provided with solder joints 19 for soldering the cable.

The method of assembling a rotating equipment monitoring device according to the above may comprise the steps of: the sensor assembly 3 is arranged in the first accommodating space 4 of the shell 1; connecting the sensor assembly 3 with an antenna circuit board 2 on which an antenna is mounted; the antenna circuit board 2 is arranged in the second accommodating space 5 of the shell 1; filling an explosion-proof medium into the first accommodating space 4; applying a sealant 8; and the cover 7 is mounted on the housing 1. Specifically, connecting the sensor assembly 3 with the antenna circuit board 2 includes taking out a cable for communication connection therebetween from the first accommodation space 4 and soldering it to the antenna circuit board 2. Mounting the antenna circuit board 2 in the second accommodation space 5 of the housing 1 includes adhering the antenna circuit board 2 to the partition 6 of the housing 1 using the adhering portion 9. Filling the first accommodation space 4 with the explosion-proof medium includes filling the first accommodation space 4 with the explosion-proof medium through the antenna circuit board 2, the partition wall 6 of the housing 1, and the opening in the adhesive portion 9. The step of applying the sealant 8 includes applying the sealant 8 at the circumferential edge of the antenna circuit board 2, the sealant 8 flowing into the first and second gaps described above.

As shown in fig. 6 and 7, the rotating equipment monitoring device in one embodiment of the present disclosure may further include a first circuit board 20 and a second circuit board 21 disposed within the first accommodation space 4 and spaced apart from each other. Fig. 7 schematically shows a side view of the above-described circuit board, on the front face of which individual electrical modules, which are not shown in the figures, are arranged. In particular, the sensor assembly 3 is arranged on a first circuit board 20, and a second circuit board 21 is provided with a Near Field Communication (NFC) module and a bluetooth module, which may in particular be arranged at a distance from each other and above the NFC module. In addition to the sensor assembly 3, a signal processing circuit, an MCU assembly, etc. may be provided on the first circuit board 20. The NFC module may include an NFC circuit, an NFC chip, an NFC antenna, and the like. The bluetooth module provided on the second circuit board 21 may include only a bluetooth antenna, and a control component thereof and the like may be provided on the first circuit board 20. Specifically, a bluetooth transceiver may be provided in the MCU assembly provided on the first circuit board 20, which is connected to a bluetooth antenna. The bluetooth transceiver may be a bluetooth radio frequency interface. The first circuit board 20 and the second circuit board 21 may be connected to each other through connectors to transmit signals and provide power. The connection between the Bluetooth radio frequency interface and the Bluetooth antenna can also be realized through the connector. The connector may also be used to secure circuit boards in addition to electrical connections between two circuit boards.

The antenna disposed in the second accommodating space 5 may be an NB-IOT antenna, and other NB-IOT module components that are matched with the NB-IOT antenna are further disposed on the first circuit board 20. The first circuit board 20 is also provided with the sensor assembly 3 and the like described above. In addition, a radio frequency interface may be further disposed on the first circuit board 20, and the other end of the cable, one end of which is connected to the NB-IOT antenna, may be directly plugged into the radio frequency interface.

The rotating equipment monitoring device further comprises a power supply assembly 23 arranged between the first circuit board 20 and the second circuit board 21. The power supply assembly 23 may include a battery and a capacitor, such as a supercapacitor, located below and connected thereto. The power supply assembly 23 is electrically connected to, for example, the first circuit board 20 to supply power to various electronic components provided thereon, and supplies power to various electronic components or modules on the second circuit board 21 through the connector between the first circuit board 20 and the second circuit board 21.

The second circuit board 21 is arranged next to the inner surface of the flat side wall 26 of the housing 1, considering that the near field communication module requires near field communication. As shown in fig. 6, the housing 1 has an approximately cylindrical shape and has flat side walls 26 recessed with respect to the corresponding cylinder. The flat side wall 26 is matched to the second circuit board 21 such that the distance between the second circuit board 21 and the inner surface of the flat side wall 26 is as small as possible for good near field signal transmission.

The first circuit board 20 and the second circuit board 21 are fixed to a metal base 24 of the housing 1 by threaded fasteners 25, respectively. Vibrations, such as bearings, may be transmitted to the sensor assembly, specifically the vibration sensor, on the first circuit board 20, in turn, through the metal base 24 and the threaded fasteners 25. By means of the vibration transmission mode, after the sensor assembly is completely surrounded by the explosion-proof medium, good transmission of vibration from the outside of the monitoring device to the sensor inside the monitoring device can be achieved, and therefore more sensitive vibration sensing can be achieved.

An indicator lamp 27 and a light guide 28 are provided at the top of the rotating equipment monitoring device, specifically at the top of the first circuit board 20 near the partition wall 6 of the housing 1. The light emitted from the indicator lamp 27 is emitted toward the outside of the top of the housing 1 by the guide of the light guide 28. In fig. 7, the indicator lamp 27 is provided to emit light transversely to the extending direction of the housing 1 in view of the installation space, and therefore it is necessary to provide a light guide 28 to guide the light to exit from the top of the housing 1. The light guide 28 is a conventional light guide utilizing reflection and refraction. The light guide 28 is disposed through the first opening 13 provided in the antenna circuit board 2 and the second opening provided in the partition wall 6 of the housing, and of course also through the third opening 18 provided in the adhesive portion 9. When the cover 7 is a transparent plastic cover, no additional openings for outgoing light need be provided in the cover 7. When the cover 7 is made of an opaque plastic while keeping the appearance of the housing consistent, as shown in fig. 6, the cover 7 is made of a light-transmitting material, i.e., has a light-transmitting region, at a region corresponding to the indication lamp 27, from which light guided through the light guide 28 is transmitted to the outside of the rotation monitoring device.

In a method of operating a rotating equipment monitoring device provided by the present disclosure, the method is performed using the rotating equipment monitoring device as described above and comprises the steps of: bringing the mobile communication device close to a flat side wall of a housing of the rotating device monitoring apparatus; activating the sensor assembly via a communication connection of the near field communication module of the mobile communication device with the near field communication module of the rotating device monitoring apparatus; the sensor assembly is arranged via a communication connection of the bluetooth module of the mobile communication device with the bluetooth module of the rotating device monitoring means. The method may further comprise the step of uploading the acquired data to the cloud via the antenna by the sensor assembly, the execution of which may be automatic, the period of which may be set by the step of setting the sensor assembly as described above. It should be understood that the present disclosure is not limited to the order of execution of the above-described method steps, e.g., the data uploading step and the step of setting up the sensor assembly may be performed simultaneously. The mobile communication device may be, for example, a mobile phone, and the operator may perform subsequent activation and setting operations through an app on the mobile phone. Of course, the mobile communication device may also be other devices such as a tablet computer, as long as it has a near field communication module and a bluetooth module. The step of bringing the mobile communication device close to the flat side wall 26 of the housing of the rotating device monitoring means allows the near field communication module of the mobile communication device to be brought close to the NFC module on the second circuit board, thus enabling a communication connection between the two. The step of setting up the sensor assembly through a communication connection with the bluetooth module may also be done by an operator through an app on the handset. The specific settings can include sensor configuration parameters such as acquisition mode, configuration of uploading information, wake-up period, alarm threshold and the like. For example, the sensor may be set to wake up for vibration and/or temperature acquisition at a certain period (e.g., every 8 hours) and upload the results of the edge treatment diagnostics or the processed content (depending on the specific configuration) to the cloud. Of course, these configuration parameters may also be performed in the cloud. In some examples, the cloud and the mobile communication device may be synchronized.

Specifically, the rotating equipment monitoring device can achieve average transmission efficiency of more than 30%, so that enough transmission coverage can be met, communication power consumption is reduced, and service life of the sensor is prolonged. Based on such high transmission efficiency, the rotating device monitoring apparatus of the present disclosure may use a narrowband wireless communication technology, such as narrowband internet of things (Narrow Band Internet of Things, NB-IOT), to implement long-range wireless transmission, so that long-range communication and a function of uploading data to the cloud may be implemented, and the gateway is not relied on. Specifically, diagnostic data may be uploaded to the cloud via a wide area wireless communication technology, NB-IOT, where the data includes rotational device alarm data, spectrum raw data (for manual or intelligent diagnostics), and the like.

Further, the disclosed rotating equipment monitoring device with zone 2 explosion protection rating may be used in areas with gas explosion hazards as well as dust explosion hazards, which is not possible with existing rotating equipment monitoring devices based on NB-IOT or other wide area network wireless communications. According to national standards GB 3836.1-2021 and GB3836.8-2021, the rotating equipment monitoring device passes ExnC IIC T4 Gc authentication in a region with gas explosion danger; according to the national standards GB 3836.1-2021, GB3836.8-2021, the dust explosion hazard zone is authenticated by Extc IIIC T135 ℃ Dc. The authentication is not realized by the existing rotating equipment monitoring device based on the wireless communication mode of the wide area network such as NB-IOT and the like and passing the 2-zone explosion-proof authentication.

In addition, the method for operating the rotating equipment monitoring device uses the combination of NFC and Bluetooth communication technologies and narrowband wireless communication technologies, so that the rotating equipment monitoring device can be conveniently activated, and various parameters of the rotating equipment monitoring device can be flexibly set.

The technical features disclosed above are not limited to the disclosed combination with other features, and other combinations between the technical features can be performed by those skilled in the art according to the purpose of the present disclosure to achieve the purpose of the present disclosure.

Claims

1. A rotating equipment monitoring device, characterized in that the rotating equipment monitoring device comprises:

a housing (1) comprising a first accommodation space (4) and a second accommodation space (5) which is located at the end of the housing and is separated from the first accommodation space by a partition wall (6) of the housing;

the sensor assembly (3) is arranged in the first accommodating space (4);

an antenna circuit board (2) on which an antenna is mounted, the antenna being configured to be in communication with the sensor assembly and disposed within the second accommodation space (5); and

a cover (7) sealing the antenna circuit board (2) within the second accommodation space (5),

wherein the first receiving space (4) is filled with an explosion-proof medium which completely surrounds the sensor assembly (3).

2. The rotating equipment monitoring device according to claim 1, further comprising an adhesive portion (9) that adheres the antenna circuit board (2) to a partition wall (6) of the housing.

3. A rotating equipment monitoring device according to claim 2, characterized in that the housing (1) comprises a stepped protrusion (10) at its end's inner side wall, which protrusion extends in the circumferential direction of the inner side wall.

4. A rotating equipment monitoring device according to claim 3, characterized in that the rotating equipment monitoring device further comprises a sealing compound (8) filled between the cover (7) and the protruding portion (10) along the circumferential direction of the antenna circuit board (2).

5. The rotating equipment monitoring device according to claim 4, characterized in that the antenna circuit board (2) is arranged at a distance from the innermost side wall of the protrusion (10) to form a first gap in the lateral direction for accommodating the sealing compound (8).

6. The rotating equipment monitoring device according to claim 4, characterized in that the adhesive part (9) is arranged at a distance from the circumferential edge of the antenna circuit board (2) to form a second gap for accommodating the sealing compound (8) in the lateral direction.

7. The rotating equipment monitoring device according to any one of claims 1 to 6, characterized in that a first opening (11) is provided on the antenna circuit board (2), and a second opening (14) at least partially aligned with the first opening is provided on the partition wall (6) of the housing, wherein the explosion-proof medium is filled into the first accommodation space (4) through the first opening and the second opening.

8. The rotating equipment monitoring device according to claim 7, characterized in that the antenna circuit board (2) is further provided with a first exhaust opening (12), and that the partition wall (6) of the housing is provided with a second exhaust opening (15) at least partly aligned with the first exhaust opening.

9. The rotating equipment monitoring device according to any one of claims 1 to 6, further comprising a first circuit board (20) and a second circuit board (21) arranged in the first accommodation space (4) and spaced apart from each other, the sensor assembly (3) being arranged on the first circuit board (20), the second circuit board (21) being provided with a near field communication module and a bluetooth module.

10. The rotating equipment monitoring device according to claim 9, wherein the antenna is an NB-IOT antenna, and the first circuit board (20) is further provided with other NB-IOT module components cooperating with the NB-IOT antenna and a radio frequency interface for connecting with the antenna.

11. The rotating equipment monitoring device according to claim 9, further comprising a power supply assembly (23) disposed between the first circuit board (20) and the second circuit board (21).

12. The rotating equipment monitoring device according to claim 9, characterized in that the second circuit board (21) is arranged next to the inner surface of the flat side wall (26) of the housing (1).

13. The rotating equipment monitoring device according to claim 9, characterized in that the housing (1) comprises a metal base (24), the first circuit board (20) and the second circuit board (21) being fixed to the metal base (24) by threaded fasteners (25), respectively.

14. The rotating equipment monitoring device according to claim 9, characterized in that an indicator lamp (27) and a light guide (28) are provided at the top of the first circuit board (20) near the partition wall (6) of the housing (1), and light emitted from the indicator lamp (27) is emitted toward the outside of the top of the housing (1) by the guide of the light guide (28).

15. The rotating equipment monitoring device according to claim 14, characterized in that a first opening (13) is provided on the antenna circuit board (2), a second opening aligned with the first opening (13) is provided on the partition wall (6) of the housing, and the light guide (28) is provided through the first and second openings.