Vibration monitoring device

Abstract

The utility model discloses a vibration monitoring device, and relates to the technical field of vibration monitoring. The vibration monitoring device comprises a shell, an optical signal detection module, a vibration sensing optical fiber, an alarm module, a cover body and an anti-disassembly detection module. The shell is provided with a containing cavity and an opening communicated with the containing cavity. The optical signal detection module is arranged in the accommodating cavity; the vibration sensing optical fiber is optically connected with the optical signal detection module; the alarm module is electrically connected with the optical signal detection module; the cover body covers the opening; the anti-disassembly detection module is arranged on the inner wall of the opening and electrically connected with the alarm module, and the anti-disassembly detection module is used for detecting the contact state of the cover body and the opening and triggering the alarm module when the cover body leaves the opening. According to the technical scheme provided by the utility model, the reliability of the vibration monitoring device is improved.

Description

Technical Field

[0001] This utility model relates to the field of vibration monitoring technology, and in particular to a vibration monitoring device. Background Technology

[0002] With the rapid development of industrial automation, smart buildings, and infrastructure construction, vibration monitoring is becoming increasingly important in areas such as equipment fault diagnosis and structural health monitoring. Vibration monitoring devices can collect and analyze vibration signals in real time, ensuring the normal operation of equipment and the safety of structures.

[0003] Most existing vibration monitoring devices do not have anti-disassembly measures. Once the vibration monitoring device is illegally disassembled, the monitoring data may be interrupted or tampered with, thereby affecting the reliability of the monitoring. Utility Model Content

[0004] The main purpose of this invention is to provide a vibration monitoring device that aims to improve the reliability of vibration monitoring devices.

[0005] To achieve the above objectives, the vibration monitoring device proposed in this utility model includes:

[0006] The housing has a receiving cavity and an opening communicating with the receiving cavity;

[0007] An optical signal detection module is disposed in the receiving cavity;

[0008] The vibration sensing fiber is optically connected to the optical signal detection module.

[0009] The alarm module is electrically connected to the optical signal detection module;

[0010] A cover, disposed over the opening; and,

[0011] An anti-tamper detection module is disposed on the inner wall of the opening and electrically connected to the alarm module. The anti-tamper detection module is used to detect the contact state between the cover and the opening, and to trigger the alarm module when the cover leaves the opening.

[0012] In one embodiment, the tamper detection module includes:

[0013] A fixed shaft is provided on the inner wall of the opening;

[0014] A trigger shaft is rotatably connected to the fixed shaft. One end of the trigger shaft is provided with a trigger part, and the other end of the trigger shaft is used to abut against the cover to restrict the rotation of the trigger shaft when the cover is placed over the opening.

[0015] A conductive element is disposed on the inner wall of the housing and electrically connected to the alarm module; and,

[0016] A driving component, disposed on the inner wall of the housing and drivenly connected to the trigger shaft, drives the trigger part to contact the conductive element when the cover leaves the opening, thereby triggering the alarm module.

[0017] In one embodiment, the trigger axis includes:

[0018] A first rotating shaft has one end rotatably mounted on the fixed shaft, and the first rotating shaft is drivenly connected to the driving component.

[0019] The second rotating shaft has one end rotatably mounted on the fixed shaft and connected to the first rotating shaft, and the first rotating shaft and the second rotating shaft are arranged opposite to each other;

[0020] An abutment rod, disposed at the end of the first rotating shaft away from the second rotating shaft, is used to abut against the cover; and,

[0021] A trigger rod is located at the end of the second rotating shaft away from the first rotating shaft, and the trigger part is provided at the end of the trigger rod opposite to the abutment rod.

[0022] In one embodiment, the triggering part is configured as a first conductive contact, and the conductive element is configured as a second conductive contact, wherein the second conductive contact contacts the first conductive contact to trigger the alarm module; or,

[0023] The triggering part is configured as a contact point, and the conductive element is configured as a micro switch. The contact point touches the micro switch to trigger the alarm module.

[0024] In one embodiment, the conductive element is disposed on the path of the trigger portion rotating axially around the fixed axis, and the conductive element is located on the side of the trigger portion opposite to the opening.

[0025] In one embodiment, the drive includes:

[0026] A fixed sleeve is disposed on the inner wall of the housing and located on the side of the trigger shaft opposite to the opening; and,

[0027] An elastic element is disposed within the fixed sleeve and positioned toward the trigger shaft. The elastic element is used to abut against the trigger shaft, causing the trigger shaft to have a tendency to rotate relative to the fixed shaft.

[0028] In one embodiment, the tamper detection module includes:

[0029] An RFID tag is disposed on the inner wall of the housing; and,

[0030] An RFID reader is located on the side of the cover facing the housing and opposite the RFID tag. The RFID reader is electrically connected to the alarm module.

[0031] In one embodiment, the alarm module includes an audible and visual alarm and a remote communication alarm unit, and the alarm module is capable of generating at least two alarm signals.

[0032] In one embodiment, the vibration monitoring device includes two optical signal detection modules and two vibration sensing optical fibers, with each vibration sensing optical fiber connected to one of the optical signal detection modules.

[0033] In one embodiment, the vibration sensing fiber is configured as a single-mode fiber.

[0034] The technical solution of this utility model involves a vibration monitoring device comprising a housing, an optical signal detection module, a vibration sensing fiber optic cable, an alarm module, a cover, and an anti-tamper detection module. The housing has a receiving cavity and an opening connected to the receiving cavity; the optical signal detection module is located in the receiving cavity; the vibration sensing fiber optic cable is optically connected to the optical signal detection module; the alarm module is electrically connected to the optical signal detection module; the cover is located on the opening; and the anti-tamper detection module is located on the inner wall of the opening and electrically connected to the alarm module. The anti-tamper detection module detects the contact state between the cover and the opening and triggers the alarm module when the cover leaves the opening. Compared to existing vibration monitoring devices that lack anti-tamper measures, the technical solution of this utility model includes an anti-tamper detection module, which can detect whether the cover has left the opening and trigger the alarm module when the cover leaves the opening, issuing an alarm to alert surrounding personnel and users. This effectively prevents unauthorized operation and improves the reliability of the vibration monitoring device. Attached Figure Description

[0035] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0036] Figure 1 A schematic diagram of the structure of an embodiment of the vibration monitoring device provided by this utility model;

[0037] Figure 2 for Figure 1 A partial exploded view of one embodiment;

[0038] Figure 3 for Figure 2 An enlarged view of an embodiment at point A;

[0039] Figure 4 for Figure 3 A schematic diagram of another embodiment;

[0040] Figure 5 This is a schematic diagram of an embodiment of the optical signal detection module and vibration sensing optical fiber provided by this utility model.

[0041] Explanation of icon numbers:

[0042] 100. Housing; 110. Upper housing; 120. Lower housing; 130. Boss; 140. Fiber optic interface;

[0043] 200. Cover;

[0044] 310, First rotating shaft; 320, Second rotating shaft; 330, Abutting rod; 331, Arc-shaped abutting part; 340, Trigger rod; 341, Trigger part; 350, Conductive element; 360, Fixed shaft; 370, Rolling bearing; 380, First support plate;

[0045] 410. Fixed sleeve; 420. Elastic element; 430. Support sleeve; 440. Second support plate;

[0046] 510. Radio Frequency Identification (RFID) tag; 520. Radio Frequency Identification (RFID) reader / writer;

[0047] 610. Laser; 620. Fiber optic coupler; 630. Photodetector; 640. Vibration sensing fiber optic cable;

[0048] 700. Power module.

[0049] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0050] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0051] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0052] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0053] With the rapid development of industrial automation, smart buildings, and infrastructure construction, vibration monitoring is becoming increasingly important in areas such as equipment fault diagnosis and structural health monitoring. Vibration monitoring devices can collect and analyze vibration signals in real time, ensuring the normal operation of equipment and the safety of structures.

[0054] Most existing vibration monitoring devices do not have anti-disassembly measures. Once the vibration monitoring device is illegally disassembled, the monitoring data may be interrupted or tampered with, thereby affecting the reliability of the monitoring.

[0055] This invention proposes a vibration monitoring device to improve the reliability of vibration monitoring devices.

[0056] Please see Figure 1 and Figure 2 In one embodiment, the vibration monitoring device includes a housing 100, an optical signal detection module, a vibration sensing fiber 640, an alarm module (not shown in the figure), a cover 200, and an anti-tamper detection module. The housing 100 has a receiving cavity and an opening communicating with the receiving cavity; the optical signal detection module is located in the receiving cavity; the vibration sensing fiber 640 is optically connected to the optical signal detection module; the alarm module is electrically connected to the optical signal detection module; the cover 200 is placed over the opening; the anti-tamper detection module is located on the inner wall of the opening and is electrically connected to the alarm module. The anti-tamper detection module is used to detect the contact state between the cover 200 and the opening, and triggers the alarm module when the cover 200 leaves the opening.

[0057] The housing 100 provides a mounting base and protection for the functional structure of the vibration monitoring device. The material of the housing 100 can be alloy, stainless steel, or fiberglass composite, etc., without limitation. In one embodiment, the housing 100 includes two connected upper housings 110 and lower housings 120. The lower housing 120 provides a mounting position. The upper housing 110 covers the top of the lower housing 120 and is connected to it, forming a receiving cavity. Neither the upper housing 110 nor the lower housing 120 has a side plate on one side, forming an opening communicating with the receiving cavity. The upper housing 110 and the lower housing 120 are connected by welding, screwing, or other methods, or are integrally formed, without limitation.

[0058] An optical signal detection module is used to provide optical signals to the vibration sensing fiber optic cable 640 and detect the optical signals fed back by the vibration sensing fiber optic cable 640, thereby realizing vibration monitoring. In one embodiment, the optical signal detection module is located in the lower housing 120, and an optical fiber interface 140 is provided on the side wall of the housing 100 away from the opening. The optical signal detection module and the vibration sensing fiber optic cable 640 are connected through the optical fiber interface 140. The optical signal detection module can emit optical signals and transmit the light source to the vibration sensing fiber optic cable 640 through the optical fiber interface 140. In one embodiment, the vibration sensing fiber optic cable 640 is located on the surface, inside, or in the external environment of an external component. When the vibration sensing fiber optic cable 640 senses the mechanical vibration of the external component, the intensity, phase, or polarization state of the optical signal within the vibration sensing fiber optic cable 640 will change. The vibration sensing fiber optic cable 640 will transmit the changed optical signal back to the optical signal detection module through the optical fiber interface 140. The optical signal detection module can determine whether there is abnormal vibration based on the optical signal fed back by the vibration sensing fiber optic cable 640. The external component can be an electronic device or a building structure such as a fence; there are no limitations on this.

[0059] The alarm module is used to issue an alarm when the optical signal detection module detects abnormal vibration. In one embodiment, the optical signal detection module triggers the alarm module to issue an alarm signal when it detects abnormal vibration.

[0060] The cover 200 is used to close the opening, and together with the housing 100, it protects the optical signal detection module. In one embodiment, a boss 130 is provided on the outer periphery of the opening, and the cover 200 is connected to the boss 130, with the inner peripheral surface of the cover 200 abutting against the outer peripheral surface of the boss 130. In one embodiment, a boss 130 is provided on the same side of both the upper housing 110 and the lower housing 120, and the inner peripheral surface of the cover 200 abuts against the outer peripheral surface of the boss 130, further fixing the upper cover 200 and the lower cover 200. In one embodiment, both the cover 200 and the boss 130 are provided with connecting holes, and the cover 200 and the boss 130 are connected by bolts. Of course, in other embodiments, the cover 200 and the boss 130 can also be connected by snap-fit ​​or screws, etc., which is not limited here.

[0061] The tamper detection module is used to detect whether the cover 200 has left the opening. In one embodiment, multiple tamper detection modules are provided along the inner periphery of the opening to detect the contact state between the cover 200 and the opening from all directions. Of course, in other embodiments, only multiple tamper detection modules may be provided, and this is not a limitation. When the cover 200 is placed on the opening, the tamper detection module will never trigger the alarm module; however, when the cover 200 leaves the opening, the tamper detection module can quickly trigger the alarm module to issue an alarm signal.

[0062] The technical solution of this utility model involves a vibration monitoring device comprising a housing 100, an optical signal detection module, a vibration sensing fiber optic cable 640, an alarm module, a cover 200, and an anti-tamper detection module. The housing 100 has a receiving cavity and an opening communicating with the receiving cavity; the optical signal detection module is located in the receiving cavity; the vibration sensing fiber optic cable 640 is optically connected to the optical signal detection module; the alarm module is electrically connected to the optical signal detection module; the cover 200 covers the opening; and the anti-tamper detection module is located on the inner wall of the opening and electrically connected to the alarm module. The anti-tamper detection module detects the contact state between the cover 200 and the opening and triggers the alarm module when the cover 200 leaves the opening. Compared to existing vibration monitoring devices that lack anti-tamper measures, this utility model's technical solution includes an anti-tamper detection module, which can detect whether the cover 200 has left the opening and triggers the alarm module when the cover 200 leaves the opening, issuing an alarm to alert surrounding personnel and users. This effectively prevents unauthorized operation and improves the reliability of the vibration monitoring device.

[0063] Please see Figure 3 and Figure 4In one embodiment, the tamper detection module includes a fixed shaft 360, a trigger shaft, a conductive element 350, and a drive component. The fixed shaft 360 is disposed on the inner wall of the opening. The trigger shaft is rotatably connected to the fixed shaft 360. One end of the trigger shaft is provided with a trigger part 341, and the other end of the trigger shaft is used to abut against the cover 200 to restrict the rotation of the trigger shaft when the cover 200 is placed over the opening. The conductive element 350 is disposed on the inner wall of the housing 100 and is electrically connected to the alarm module. The drive component is disposed on the inner wall of the housing 100 and is drivenly connected to the trigger shaft to drive the trigger part 341 to contact the conductive element 350 when the cover 200 leaves the opening, thereby triggering the alarm module.

[0064] In one embodiment, the trigger shaft includes a first rotating shaft 310, a second rotating shaft 320, an abutment rod 330, and a trigger rod 340. One end of the first rotating shaft 310 is rotatably mounted on a fixed shaft 360 and is drivenly connected to a driving member. One end of the second rotating shaft 320 is rotatably mounted on the fixed shaft 360 and connected to the first rotating shaft 310. The first rotating shaft 310 and the second rotating shaft 320 are arranged opposite to each other. The abutment rod 330 is located at the end of the first rotating shaft 310 away from the second rotating shaft 320 and is used to abut against the cover 200. The trigger rod 340 is located at the end of the second rotating shaft 320 away from the first rotating shaft 310, and a trigger portion 341 is provided at the end of the trigger rod 340 away from the abutment rod 330.

[0065] In one embodiment, one end of the fixed shaft 360 is fixed to the inner wall of the opening, and a rolling bearing 370 is sleeved on the outer periphery of the other end of the fixed shaft 360 for rotatable connection with the trigger shaft. In one embodiment, the first rotating shaft 310 and the second rotating shaft 320 are fixed on opposite sides of the outer periphery of the rolling bearing 370, and the first rotating shaft 310 and the second rotating shaft 320 are located on the same axis. In one embodiment, the extending direction of the trigger rod 340 is perpendicular to the extending direction of the second rotating shaft 320, the extending direction of the abutment rod 330 is perpendicular to the extending direction of the first rotating shaft 310, the abutment rod 330 faces the opening, and the trigger rod 340 and the abutment rod 330 face opposite directions. The driving member is located on the side of the first rotating shaft 310 away from the opening. Of course, in other embodiments, there may be a certain angle between the extending directions of the abutment rod 330 and the first rotating shaft 310, and between the trigger rod 340 and the second rotating shaft 320; or, the abutment rod 330 and the trigger rod 340 may not be provided. This is not a limitation.

[0066] When the cover 200 is placed over the opening, the abutting part abuts against the cover 200, preventing the triggering part 341 from contacting the conductive element 350. When the cover 200 moves away from the opening by a preset distance, the driving member drives the first rotating shaft 310 to rotate, causing the second rotating shaft 320 to drive the trigger rod 340 to rotate until the triggering part 341 contacts the conductive element 350, thereby triggering the alarm module. The preset distance is the distance from which the cover 200 opens to reach the structure inside the receiving cavity; the preset distance can be flexibly set according to actual needs. Furthermore, the lengths of the abutting rod 330 and the trigger rod 340 are flexibly set according to the preset distance and are not limited here. In one embodiment, the end of the abutment rod 330 away from the trigger rod 340 is provided with an arc-shaped abutment portion 331. The arc-shaped abutment portion 331 is used to abut against the cover 200, which can reduce the wear between the abutment rod 330 and the cover 200. Moreover, after the cover 200 leaves the opening by a preset distance, the first rotating shaft 310 can react quickly, causing the trigger portion 341 to quickly contact the conductive element 350, thereby triggering the alarm module.

[0067] The technical solution of this utility model embodiment, through the combination structure of a first rotating shaft 310, a second rotating shaft 320, abutment rod 330, and trigger rod 340, can improve the structural stability of the trigger shaft. The anti-tamper detection module has a simple structure, avoids affecting the normal operation of the internal structure of the vibration monitoring device, and is easy to install. The relative arrangement of the first rotating shaft 310 and the second rotating shaft 320 makes the rotation of the trigger shaft more stable; the arrangement of the abutment rod 330 and the trigger rod 340 can avoid false triggering caused by slight vibration, thus improving the reliability of the anti-tamper detection.

[0068] In one embodiment, the triggering part 341 is configured as a first conductive contact, and the conductive element 350 is configured as a second conductive contact. The second conductive contact contacts the first conductive contact to trigger the alarm module. In another embodiment, the second conductive contact is electrically connected to the alarm module. When the first conductive contact contacts the second conductive contact, the circuit is closed, thereby triggering the alarm module. Thus, the first and second conductive contacts cooperate, resulting in a simple structure that can quickly respond and trigger the alarm module.

[0069] In another embodiment, the triggering part 341 is configured as a contact point, and the conductive element 350 is configured as a micro switch. The contact point touches the micro switch to trigger the alarm module. In one embodiment, the micro switch is electrically connected to the alarm module. When the contact point touches the micro switch, the micro switch closes, thus closing the circuit and triggering the alarm module. In this way, the cooperation between the contact point and the micro switch provides higher sensitivity and reliability, effectively triggering the alarm module even with small contact forces.

[0070] In one embodiment, the conductive element 350 is disposed on the path of the trigger portion 341 rotating axially around the fixed shaft 360, and the conductive element 350 is located on the side of the trigger portion 341 facing away from the opening. In another embodiment, the inner wall of the housing 100 is provided with a first support plate 380, which is disposed on the path of the trigger portion 341 rotating axially around the fixed shaft 360, and the conductive element 350 is fixed to the side of the first support plate 380 facing the opening. In one embodiment, the driving member can drive the trigger shaft to rotate axially around the fixed shaft 360 by a certain angle, so that the trigger portion 341 contacts the conductive element 350 to trigger the alarm module. The certain angle of rotation can be flexibly set according to actual needs and is not limited here. In this way, by restricting the position of the conductive element 350, it is ensured that the rotation of the trigger shaft allows the trigger portion 341 to contact the conductive element 350, thereby ensuring the realization of the tamper detection function.

[0071] Please see Figure 3 and Figure 4 In one embodiment, the driving member includes a fixed sleeve 410 and an elastic body. The fixed sleeve 410 is disposed on the inner wall of the housing 100 and located on the side opposite to the trigger shaft opening. The elastic body 420 is disposed inside the fixed sleeve 410 and is disposed towards the trigger shaft. The elastic body 420 is used to abut against the trigger shaft, so that the trigger shaft has a tendency to rotate along the fixed shaft 360.

[0072] In one embodiment, the inner wall of the housing 100 is provided with a second support plate 440, which is located on the side of the first rotating shaft 310 away from the opening. The fixing sleeve 410 is fixed to the side of the second support plate 440 facing the opening. One end of the elastic member 420 is fixed inside the fixing sleeve 410, and the other end of the elastic member 420 extends out of the fixing sleeve 410 to abut against the first rotating shaft 310. In one embodiment, the end of the elastic member 420 facing the first rotating shaft 310 is also provided with a limiting plate, which is used to abut against both sides of the first rotating shaft 310 to limit the position of the first rotating shaft 310 and ensure that the elastic member can abut against the first rotating shaft 310. In one embodiment, the elastic member 420 is configured as a spring, one end of the spring is fixed to the fixing sleeve 410, and the other end of the spring is also provided with a supporting sleeve 430. The limiting plate is located on the side of the supporting sleeve 430 away from the spring. The spring extends into the support sleeve 430, and a support shaft is also provided inside the support sleeve 430. The spring is sleeved on the outer periphery of the support shaft to provide support for the spring. Of course, in other embodiments, the elastic element 420 may also be configured as silicone or rubber, etc., and there is no limitation here. Of course, in other embodiments, the driving element may also be configured as a magnetic driving element, etc., disposed between the inner wall of the housing 100 and the trigger rod 340, and driven by magnetic attraction, and there is no limitation here.

[0073] When the cover 200 is placed over the opening, the elastic member 420 abuts against the first rotating shaft 310, so that the abutting part is pressed against the cover 200, ensuring that the trigger part 341 does not touch the conductive element 350; when the cover 200 moves away from the opening by a preset distance, the elastic member 420 can quickly drive the first rotating shaft 310 to rotate, so that the trigger rod 340 rotates toward the conductive element 350 until the trigger part 341 touches the conductive element 350.

[0074] The technical solution of this utility model embodiment, by setting an elastic element 420, causes the first rotating shaft 310 to have a tendency to rotate axially around the fixed shaft 360 under the elastic force of the elastic element 420. This allows the first rotating shaft 310 to rotate promptly when the cover 200 separates from the opening, improving the rotational sensitivity of the trigger shaft and increasing the triggering speed of the alarm module. By setting the fixed sleeve 410, support and positioning of the elastic element 420 can be provided, improving the reliability of the tamper detection module.

[0075] Please see Figure 2 In one embodiment, the tamper detection module includes an RFID tag 510 and an RFID reader 520. The RFID tag 510 is disposed on the inner wall of the housing 100. The RFID reader 520 is disposed on the side of the cover 200 facing the housing 100 and opposite to the RFID tag 510. The RFID reader 520 is electrically connected to the alarm module.

[0076] The RFID tag 510 stores unique identification information that can be read by the RFID reader 520 via radio frequency signals. In one embodiment, the RFID tag 510 is disposed on the side wall of the receiving cavity opposite the opening, so as to face the RFID reader 520 and ensure that the RFID reader 520 can read the RFID tag 510. In one embodiment, the RFID reader 520 includes an antenna and a control module, capable of transmitting and receiving radio frequency signals. The RFID reader 520 communicates with the RFID tag 510 via the antenna. When the cover 200 is closed over the opening, the RFID reader 520 and the RFID tag 510 can communicate normally; that is, the RFID reader 520 sends radio frequency signals at regular intervals, and the RFID tag 510 returns a response signal containing unique identification information after receiving the radio frequency signals. When the cover 200 leaves the opening, the position of the cover 200 changes, causing the communication between the RFID reader 520 and the RFID tag 510 to be interrupted. The RFID reader 520 cannot detect the response signal containing the unique identification information. At this time, the RFID reader 520 will trigger the alarm module.

[0077] The technical solution of this utility model embodiment achieves a dual anti-tampering mechanism by setting up an RFID tag 510 and an RFID reader 520, which further improves the safety and reliability of the vibration monitoring device.

[0078] In one embodiment, the alarm module includes an audible and visual alarm and a remote communication alarm unit, and the alarm module is capable of generating at least two alarm signals.

[0079] In one embodiment, the alarm module can generate two different alarm signals, corresponding to the tamper detection module and the light signal detection module, respectively. Specifically, in one embodiment, an audible and visual alarm is located outside the housing 100 and is used to emit sound and light to alert surrounding personnel. The audible and visual alarm can emit two different sounds and lights to correspond to different alarm signals. Of course, in other embodiments, the audible and visual alarm can emit multiple different sounds and lights; this is not a limitation.

[0080] In one embodiment, a remote communication alarm unit is disposed within the receiving cavity and is used to send alarm signals to a remote monitoring center or mobile device to achieve remote monitoring and alarm. In one embodiment, the remote communication alarm unit includes a wireless communication unit and a data transmission unit, etc., and wireless communication and data transmission can be achieved using Ethernet or Wi-Fi, etc., without limitation. In one embodiment, the alarm module also includes a microcontroller disposed within the receiving cavity, which is used to control the audible and visual alarm and the remote communication alarm unit. In one embodiment, the conductive element 350 is electrically connected to the microcontroller. When the trigger part 341 touches the conductive element 350, the circuit is closed. The microcontroller detects the circuit closure and controls the audible and visual alarm and the remote communication alarm unit to issue a first alarm signal. In one embodiment, the optical signal detection module is electrically connected to the microcontroller. When the optical signal detection module detects abnormal vibration, it transmits the corresponding electrical signal to the microcontroller. The microcontroller controls the audible and visual alarm and the remote communication alarm unit to issue a second alarm signal, wherein the light and sound corresponding to the first alarm signal are different from the light and sound corresponding to the second alarm signal.

[0081] In the technical solution of this utility model embodiment, by setting up an audible and visual alarm and a remote communication alarm unit, the surrounding personnel and remote monitoring personnel can be effectively alerted, thereby improving the safety and reliability of the vibration monitoring device. Furthermore, the alarm module can issue different alarm signals for tamper detection and vibration monitoring, allowing surrounding personnel and remote monitoring personnel to distinguish abnormal situations and take corresponding measures, thus improving the intelligence and reliability of the vibration monitoring device.

[0082] Please see Figure 2 and Figure 5In one embodiment, the vibration monitoring device includes two optical signal detection modules and two vibration sensing optical fibers 640, with each vibration sensing optical fiber 640 connected to one of the optical signal detection modules.

[0083] In one embodiment, each optical signal detection module includes a laser 610, an optical fiber coupler 620, a photodetector 630, and an analysis and processing unit. The optical fiber coupler 620 is optically connected to the laser 610, the photodetector 630, and the vibration sensing fiber 640. The photodetector 630 is electrically connected to the analysis and processing unit. The laser 610 emits an optical signal and transmits it to the vibration sensing fiber 640 via the optical fiber coupler 620. The optical signal is transmitted within the vibration sensing fiber 640. When external vibration is sensed, the vibration sensing fiber 640 transmits the changed optical signal back to the optical fiber coupler 620, which then transmits the changed optical signal to the photodetector 630. The photodetector 630 converts the received optical signal into an electrical signal and transmits it to the analysis and processing unit. In one embodiment, the analysis and processing unit includes a microprocessor. The microprocessor is electrically connected to the photodetector 630 and the microcontroller of the alarm module. The photodetector 630 transmits the electrical signal to the microprocessor. The microprocessor has a preset threshold. It compares the received electrical signal to this threshold. If the electrical signal exceeds the threshold, abnormal vibration is detected. The microprocessor then transmits the electrical signal to the microcontroller to trigger a second alarm signal. In one embodiment, the two optical signal detection modules are independently configured. The housing 100 has two corresponding fiber optic interfaces 140, allowing the two fiber optic couplers 620 in each optical signal detection module to connect to the vibration sensing fiber optic 640 via one fiber optic interface 140. In one embodiment, a power module 700 is also provided within the housing cavity to power the optical signal detection modules and the alarm module. The battery module can be a battery pack, etc., and is not limited thereto.

[0084] The technical solution of this utility model embodiment achieves dual-channel monitoring by setting up two optical signal detection modules and two vibration sensing optical fibers 640, thereby improving the comprehensiveness and accuracy of the vibration monitoring device. Furthermore, the two optical signal detection modules can serve as backups for each other; if one fails, the other can still function normally, ensuring uninterrupted vibration monitoring and improving the reliability of the vibration monitoring device.

[0085] In one embodiment, the vibration sensing fiber 640 is configured as a single-mode fiber.

[0086] Single-mode optical fiber possesses excellent transmission performance and anti-interference capabilities. In one embodiment, both vibration sensing optical fibers 640 are configured as single-mode optical fibers. Of course, in other embodiments, the vibration sensing optical fibers 640 can also be configured as polarization-maintaining optical fibers or multi-core optical fibers, etc., and no limitation is made here. Thus, by configuring the vibration sensing optical fibers 640 as single-mode optical fibers, the sensing accuracy of the vibration sensing optical fibers 640 is improved, enabling accurate conversion of vibration signals into optical signals for transmission to the optical signal detection module, thereby enhancing the monitoring accuracy of the vibration monitoring device.

[0087] The above description is merely an exemplary embodiment of the present utility model and does not limit the scope of protection of the present utility model. Any equivalent structural transformations made based on the technical concept of the present utility model and the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the scope of protection of the present utility model.

Claims

1. A vibration monitoring device, characterized in that, include: The housing has a receiving cavity and an opening communicating with the receiving cavity; An optical signal detection module is disposed in the receiving cavity; The vibration sensing fiber is optically connected to the optical signal detection module. The alarm module is electrically connected to the optical signal detection module; A cover, disposed over the opening; and, An anti-tamper detection module is disposed on the inner wall of the opening and electrically connected to the alarm module. The anti-tamper detection module is used to detect the contact state between the cover and the opening, and to trigger the alarm module when the cover leaves the opening.

2. The vibration monitoring apparatus of claim 1, wherein The tamper detection module includes: A fixed shaft is provided on the inner wall of the opening; A trigger shaft is rotatably connected to the fixed shaft. One end of the trigger shaft is provided with a trigger part, and the other end of the trigger shaft is used to abut against the cover to restrict the rotation of the trigger shaft when the cover is placed over the opening. A conductive element is disposed on the inner wall of the housing and electrically connected to the alarm module; and, A driving component, disposed on the inner wall of the housing and drivenly connected to the trigger shaft, drives the trigger part to contact the conductive element when the cover leaves the opening, thereby triggering the alarm module.

3. The vibration monitoring apparatus of claim 2, wherein The trigger axis includes: A first rotating shaft has one end rotatably mounted on the fixed shaft, and the first rotating shaft is drivenly connected to the driving component. The second rotating shaft has one end rotatably mounted on the fixed shaft and connected to the first rotating shaft, and the first rotating shaft and the second rotating shaft are arranged opposite to each other; An abutment rod, disposed at the end of the first rotating shaft away from the second rotating shaft, is used to abut against the cover; and, A trigger rod is located at the end of the second rotating shaft away from the first rotating shaft, and the trigger part is provided at the end of the trigger rod opposite to the abutment rod.

4. The vibration monitoring apparatus of claim 2, wherein The triggering part is configured as a first conductive contact, and the conductive element is configured as a second conductive contact. The second conductive contact comes into contact with the first conductive contact to trigger the alarm module; or... The triggering part is configured as a contact point, and the conductive element is configured as a micro switch. The contact point touches the micro switch to trigger the alarm module.

5. The vibration monitoring apparatus of claim 2, wherein The conductive element is disposed on the path of the trigger part rotating axially around the fixed axis, and the conductive element is located on the side of the trigger part away from the opening.

6. The vibration monitoring apparatus of claim 2, wherein The driving component includes: A fixed sleeve is disposed on the inner wall of the housing and located on the side of the trigger shaft opposite to the opening; and, An elastic element is disposed within the fixed sleeve and positioned toward the trigger shaft. The elastic element is used to abut against the trigger shaft, causing the trigger shaft to have a tendency to rotate relative to the fixed shaft.

7. The vibration monitoring apparatus of claim 1, wherein The tamper detection module includes: An RFID tag is disposed on the inner wall of the housing; and, An RFID reader is located on the side of the cover facing the housing and opposite the RFID tag. The RFID reader is electrically connected to the alarm module.

8. The vibration monitoring apparatus of claim 1, wherein, The alarm module includes an audible and visual alarm and a remote communication alarm unit, and the alarm module is capable of generating at least two alarm signals.

9. The vibration monitoring apparatus of claim 1, wherein, The vibration monitoring device comprises two light signal detection modules and two vibration sensing optical fibers, and the vibration sensing optical fibers are connected with the light signal detection modules one by one.

10. The vibration monitoring apparatus of claim 1, wherein, The vibration sensing optical fiber is configured as a single-mode optical fiber.

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