Temperature and vibration monitoring framework based on equal division along line parallel connection

Abstract

The utility model discloses a kind of along line equal division parallel temperature vibration monitoring framework based on, it is related to equipment safety monitoring technical field, including: optical fiber passive control cabinet, and the optical fiber of optical fiber passive control cabinet is connected multiple temperature vibration sensor groups extracted, temperature vibration sensor group includes N optical fiber passive temperature vibration sensors of parallelly arranged settings, N is greater than or equal to 1, different optical fiber passive temperature vibration sensors absorb different light signal wavelength and each optical fiber passive temperature vibration sensor corresponds independent light signal pair, and the light signal type in light signal pair is different. Multiple optical fiber passive temperature vibration sensors in temperature vibration sensor group are parallelly arranged, and the optical fiber passive temperature vibration sensor of parallelly arranged settings can be set in different mechanism of equipment, realize to the working temperature, vibration frequency and vibration acceleration in the working process of equipment monitoring. Optical fiber passive temperature vibration sensor does not need additional power supply access, while guaranteeing to monitor equipment, improve anti-interference capability.

Description

Technical Field

[0001] This utility model relates to the field of equipment safety monitoring technology, specifically to a temperature and vibration monitoring framework based on evenly distributed parallel connection along the line. Background Technology

[0002] In modern industrial equipment (such as motors, pumps, compressors, gearboxes, etc.), under high temperature, high load, or continuous operation conditions, the failure of critical components (bearings, rotors, seals) is often accompanied by abnormal temperature increases and changes in vibration signal characteristics. Traditional periodic maintenance methods carry the dual risks of over-maintenance (leading to downtime losses) or sudden failures (triggering cascading damage). Statistics show that more than 60% of mechanical failures in rotating machinery can be detected in advance through vibration monitoring, and bearing overheating accounts for 35% of motor failures.

[0003] Early equipment monitoring relied primarily on manual inspections, with operators judging equipment status based on experience. This method was inefficient and prone to missing detections. With advancements in sensor technology, current techniques typically involve placing vibration sensors at critical locations where the monitored equipment generates high vibration frequencies, and temperature sensors at locations prone to overheating. These combined temperature and vibration sensors enable safety monitoring of the equipment. If the temperature or vibration frequency exceeds preset values, manual intervention is used to initiate an emergency shutdown for equipment maintenance, preventing accidents.

[0004] While temperature and vibration sensors can be used for equipment safety monitoring, these sensors are mostly installed at the drive position of the equipment. However, existing drives increasingly use variable frequency motors and permanent magnet motors, which offer higher resistance to sensor interference. Traditional sensors, which use electrical signal connections and are active sensors, have poor interference resistance, thus affecting the effectiveness of equipment safety monitoring. Utility Model Content

[0005] To solve the above-mentioned technical problems, this utility model proposes the following technical solution: In a first aspect, this utility model provides a temperature and vibration monitoring framework based on parallel connection along the line, including: a passive fiber optic control cabinet, and multiple temperature and vibration sensor groups connected to the optical fiber leading out from the passive fiber optic control cabinet. The temperature and vibration sensor group includes N passive fiber optic temperature and vibration sensors arranged in parallel, where N is greater than or equal to 1. Different passive fiber optic temperature and vibration sensors absorb different wavelengths of light signals, and each passive fiber optic temperature and vibration sensor corresponds to an independent pair of light signals, and the types of light signals in the pairs of light signals are different.

[0006] In one possible implementation, the passive fiber optic control cabinet includes a control cabinet housing, inside which a temperature and vibration demodulator and a fiber optic distribution frame are installed. The fiber optic distribution frame is used to splice and distribute the fiber cores of the optical fibers. The temperature and vibration demodulator and the fiber optic distribution frame are connected by optical patch cords.

[0007] In one possible implementation, an optical splitter is provided between the temperature and vibration demodulator and the fiber optic distribution frame. The input end of the optical splitter is connected to the temperature and vibration demodulator, and the output end of the optical splitter is connected to the fiber optic distribution frame. Each fiber core pair leading out from the fiber optic distribution frame is connected to only one of the fiber passive temperature and vibration sensors, and the optical signal types of different fiber cores in the fiber core pair are different.

[0008] In one possible implementation, multiple optical splitters are provided, and different optical splitters are connected to the temperature-resonance demodulator through different fiber optic patch cords. The optical signals distributed by the optical splitters are connected to the fiber optic distribution frame through fiber optic patch cords.

[0009] In one possible implementation, an optical fiber splitter box is provided between the optical fiber passive control cabinet and the temperature and vibration sensor group. The receiving end of each optical fiber splitter box is connected to only one fiber core pair of the optical fiber. The optical fiber splitter box is provided with two optical splitters, which are connected to different fiber cores in the fiber core pair. Multiple sensor connection lines are led out from the output end of the optical fiber splitter box, and each sensor connection line is connected to only one optical fiber passive temperature and vibration sensor.

[0010] In one possible implementation, the fiber core pairs distributed by the fiber distribution frame are sequentially connected to different fiber distribution boxes.

[0011] In one possible implementation, all fiber pairs distributed by the fiber distribution frame are connected to the first fiber distribution box. The first fiber distribution box is connected to one fiber pair, and the remaining fiber pairs are led out from the first fiber distribution box into the second fiber distribution box, until the fiber pair led out from the (N-1)th fiber distribution box becomes one and is connected to the Nth fiber distribution box.

[0012] In one possible implementation, a control system is also included, which is electrically connected to the temperature and vibration demodulator.

[0013] In one possible implementation, the control system includes a PLC controller housed within the control cabinet and a human-machine interface embedded in the control cabinet, wherein the PLC controller is electrically connected to both the human-machine interface and the temperature and vibration demodulator.

[0014] In one possible implementation, the control system is a host computer, which is electrically connected to the temperature and vibration demodulator via a network cable or optical fiber.

[0015] In this embodiment of the invention, multiple passive fiber optic temperature and vibration sensors are connected in parallel within the temperature and vibration sensor group. These parallel sensors can be installed in different parts of the equipment to monitor the operating temperature and vibration frequency during operation. The passive fiber optic temperature and vibration sensors do not require an external power supply, thus improving anti-interference capabilities while ensuring equipment monitoring. Attached Figure Description

[0016] Figure 1 A schematic diagram of a temperature and vibration monitoring framework based on parallel connection along the line is provided for an embodiment of this utility model; Figure 2 A schematic diagram of a temperature and vibration monitoring framework based on parallel connection along the line is provided for an embodiment of this utility model; Figure 3 A schematic diagram of the structure of the fiber optic passive temperature vibration sensor provided in this embodiment of the utility model; Figure 4 A schematic diagram of a temperature and vibration monitoring framework based on parallel connection along the line is provided for an embodiment of this utility model; Figure 5 A schematic diagram of a temperature and vibration monitoring framework based on parallel connection along the line is provided for an embodiment of this utility model; Figure 6 A schematic diagram of a temperature and vibration monitoring framework based on parallel connection along the line is provided for an embodiment of this utility model; Figure 7 A schematic diagram of a temperature and vibration monitoring framework based on parallel connection along the line is provided for an embodiment of this utility model; Figure 1-7 In Chinese, the symbol is represented as: 1-Control cabinet housing, 2-Temperature and vibration demodulator, 3-Fiber optic patch panel, 4-Fiber optic patch cord, 5-Temperature and vibration sensor group, 6-Fiber optic passive temperature and vibration sensor, 7-PLC controller, 8-HMI touch screen, 9-Host computer, 10-Box housing, 11-Vibration sensor, 12-Temperature probe, 13-Heat-conducting sheet, 14-Heat-conducting bolt, 15-Heat-conducting nut, 16-Base, 17-Optical splitter, 18-Fiber optic junction box, 19-Sensor connection cable. Detailed Implementation

[0017] The present solution will now be described in conjunction with the accompanying drawings and specific embodiments.

[0018] Example 1: See Figure 1The temperature and vibration monitoring framework based on parallel connection along the line in this embodiment includes a passive fiber optic control cabinet. The passive fiber optic control cabinet includes a cabinet housing 1, within which a temperature and vibration demodulator 2 and a fiber optic distribution frame 3 are installed. The temperature and vibration demodulator 2 is configured with optical signals to meet the needs of different passive fiber optic sensors based on the number of channels. In this embodiment, the passive fiber optic temperature and vibration sensors need to be configured with optical signals to meet the needs of both passive fiber optic temperature sensors and passive fiber optic vibration sensors. The fiber optic distribution frame 3 is used to splice and distribute the fiber cores of the optical fibers. The temperature and vibration demodulator 2 and the fiber optic distribution frame 3 are connected via fiber optic patch cords 4.

[0019] The fiber cores distributed by the fiber optic distribution frame 3 are sequentially connected to different passive fiber optic temperature and vibration sensors 6 in the temperature and vibration sensor group 5. In this embodiment, the temperature and vibration sensor group 5 includes N passive fiber optic temperature and vibration sensors 6 arranged in parallel, where N is greater than or equal to 1, and different passive fiber optic temperature and vibration sensors 6 absorb different wavelengths of light signals. Figure 1 In each temperature and vibration sensor group 5, four fiber optic passive temperature and vibration sensors 6 are connected in parallel. Figure 1 The above is merely an illustrative example. In actual use, the number of fiber optic passive temperature and vibration sensors 6 can be reduced or increased as needed.

[0020] Furthermore, the temperature and vibration monitoring framework based on the evenly distributed parallel connection along the line also includes a control system, which is electrically connected to the temperature and vibration demodulator 2. In this embodiment, the control system includes a PLC controller 7 disposed in the control cabinet 1 and a human-machine interface touch screen 8 embedded in the control cabinet 1. The PLC controller 7 is electrically connected to both the human-machine interface touch screen 8 and the temperature and vibration demodulator 2. It should be noted that the human-machine interface touch screen 8 in this embodiment can also be replaced by a host computer 9.

[0021] See Figure 2 In this embodiment, the control system can also be a host computer 9. The host computer 9 is located outside the optical fiber passive control cabinet and is electrically connected to the temperature and vibration demodulator 2 via a network cable or optical cable.

[0022] See Figure 3 In this embodiment, the fiber optic passive temperature and vibration sensor 6 includes a housing 10. Inside the housing 10 are a vibration sensor 11 and a temperature probe 12, a heat-conducting plate 13 for fixing the temperature probe 12, a heat-conducting bolt 14 and a heat-conducting nut 15 for fixing the heat-conducting plate 13, and the heat-conducting bolt 14 passes through the bottom wall of the housing 10 and connects to a base 16. The fiber optic passive temperature and vibration sensor 6 housing 10 can be directly connected to the monitoring position of the monitored device via the base 16.

[0023] In this embodiment, the temperature and vibration monitoring architecture based on parallel connection along the line first configures the optical signal type and emits an optical signal through the temperature and vibration demodulator 2. Then, after the fiber cores of the optical fibers are fused and distributed through the fiber distribution frame 3, different fiber core pairs are sequentially connected to different passive fiber temperature and vibration sensors 6 in the temperature and vibration sensor group 5. Since the passive fiber temperature and vibration sensors 6 contain gratings with different center wavelengths, the position is located by the temperature and vibration demodulator through the light reflection of these gratings. Thus, during the monitoring of the monitored equipment, optical signals of different wavelengths will be returned. If, at a certain moment, the wavelength of the optical signal returned by any passive fiber temperature and vibration sensor 6 fluctuates, it indicates that the monitoring position of the passive fiber temperature and vibration sensor 6 is abnormal, and this will be displayed on the display interface of the control system.

[0024] Example 2: See Figure 4 Unlike the temperature and vibration monitoring architecture based on parallel connection along the line in Embodiment 1, the temperature and vibration monitoring architecture based on parallel connection along the line in this embodiment is equipped with an optical splitter 17. The input end of the optical splitter 17 is connected to the temperature and vibration demodulator 2, and the output end of the optical splitter 17 is connected to the optical fiber distribution frame 3. Each fiber core pair leading out from the optical fiber distribution frame 3 is connected to only one optical fiber passive temperature and vibration sensor 6. By using the above-mentioned optical splitter 17, more optical fiber passive temperature and vibration sensors 6 can be connected.

[0025] In this embodiment, the optical signal output from the temperature and vibration demodulator 2 enters the optical splitter 17, whereby the optical splitter 17 divides one optical signal into multiple parallel optical signals. For example... Figure 4 As shown, one optical signal output from the temperature and vibration demodulator 2 is split into four signals after entering the optical splitter 17. In this way, one optical signal output from the temperature and vibration demodulator 2 can supply optical signals to more fiber optic passive temperature and vibration sensors 6.

[0026] In this embodiment, the temperature and vibration sensor group 5 is still illustrated by four parallel-connected fiber optic passive temperature and vibration sensors 6. The control system uses a PLC controller 7 and a human-machine interface touch screen 8 embedded in the control cabinet 1. Of course, the control system in this embodiment can also use... Figure 2 The host computer 9 shown is not described in detail here.

[0027] Example 3: See Figure 5Unlike the temperature and vibration monitoring architecture based on parallel connection along the line in Embodiment 1, the temperature and vibration monitoring architecture based on parallel connection along the line in this embodiment has an optical fiber splitter box 18 between the optical fiber passive control cabinet and the temperature and vibration sensor group 5. The receiving end of each optical fiber splitter box 18 is connected to only one fiber core pair in the optical fiber. The optical fiber splitter box 18 is equipped with two optical splitters 17 (not shown in the figure), which connect to different fiber cores in the fiber core pair. Multiple sensor connection lines 19 are led out from the output end of the optical fiber splitter box 18, and each sensor connection line 19 is connected to only one optical fiber passive temperature and vibration sensor 6.

[0028] In this embodiment, the optical splitter 17 is placed in an external fiber optic junction box 18. The optical signal output from the passive fiber optic control cabinet enters the fiber optic junction box 18, where the optical splitter 17 divides the optical signal of the fiber pair into two groups of parallel optical signals. For example... Figure 5 As shown, the optical signal output from the passive fiber optic control cabinet is split into four paths after entering the optical fiber splitter box 18. Thus, the optical signal provided by one fiber core pair output from the temperature and vibration demodulator 2 can supply optical signals to the four passive fiber optic temperature and vibration sensors 6 of a temperature and vibration sensor group 5 in this embodiment.

[0029] This embodiment is the same as the previous embodiment, and the temperature and vibration sensor group 5 is still illustrated by four parallel-connected fiber optic passive temperature and vibration sensors 6. The control system uses a PLC controller 7 and a human-machine interface touch screen 8 embedded in the control cabinet 1. Similarly, the control system in this embodiment can also use... Figure 2 The host computer 9 shown is not described in detail here.

[0030] Example 4: See Figure 6 Similar to Embodiment 3, this embodiment uses an optical fiber distribution box 18 to extend the output optical path outside the optical fiber passive control cabinet to accommodate the number of optical fiber passive temperature and vibration sensors 6. Unlike the temperature and vibration monitoring architecture based on evenly distributed parallel connections along the line in Embodiment 3, in this embodiment, all fiber core pairs distributed by the optical fiber distribution frame 3 are connected to the first optical fiber distribution box O1#FHG. The first optical fiber distribution box O1#FHG is connected to one fiber core, and the remaining fiber core pairs are led out from the first optical fiber distribution box O1#FHG and into the second optical fiber distribution box O2#FHG, until the fiber core pair led out from the (N-1)th optical fiber distribution box n-1#FHG becomes one and is connected to the Nth optical fiber distribution box n#FHG.

[0031] Similar to the embodiments described above, in this embodiment, the temperature and vibration sensor group 5 is illustrated by four parallel-connected fiber optic passive temperature and vibration sensors 6. The control system uses a PLC controller 7 and a human-machine interface touch screen 8 embedded in the control cabinet 1. Alternatively, a host computer 9 can be used directly in the control system, which will not be described in detail here.

[0032] Example 5: See Figure 7 Compared with the above embodiments, the temperature and vibration monitoring framework based on parallel connection along the line given in this embodiment introduces the optical fiber junction box 18 in embodiment 3 on the basis of embodiment 2.

[0033] The design in this embodiment allows for optical path expansion both inside and outside the fiber optic passive control cabinet via the fiber optic junction box 18. This enables the adaptation of a larger number of fiber optic passive temperature and vibration sensors 6, making it suitable for equipment with numerous monitoring points and a large overall structure.

[0034] In this embodiment, all fiber pairs distributed by the fiber optic distribution frame 3 are connected to the first fiber optic distribution box O1#FHG. The first fiber optic distribution box O1#FHG is connected to one fiber, and the remaining fiber pairs are led out from the first fiber optic distribution box O1#FHG and into the second fiber optic distribution box O2#FHG, until the fiber pair led out from the (N-1)th fiber optic distribution box n-1#FHG becomes one and is connected to the Nth fiber optic distribution box n#FHG. Of course, the design method of sequentially connecting the fiber pairs distributed by the fiber optic distribution frame 3 to different fiber optic distribution boxes 18 as in Embodiment 3 can also be adopted.

[0035] In this embodiment, the same temperature and vibration sensor group 5 is still illustrated by four parallel-connected fiber optic passive temperature and vibration sensors 6. The control system uses a PLC controller 7 and a human-machine interface touch screen 8 embedded in the control cabinet 1. The specific control system can also directly use a host computer 9, which will not be described in detail here.

[0036] As can be seen from the above embodiments, in this embodiment, multiple fiber optic passive temperature and vibration sensors 6 in the temperature and vibration sensor group 5 are arranged in parallel. The parallel-arranged fiber optic passive temperature and vibration sensors 6 can be installed in different parts of the equipment to monitor the operating temperature and vibration frequency of the equipment during operation. The fiber optic passive temperature and vibration sensors 6 do not require an additional power supply, which improves the anti-interference capability while ensuring equipment monitoring.

[0037] In this embodiment of the invention, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, without necessarily requiring or implying any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0038] The above description is merely a specific embodiment of this utility model. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. The protection scope of this utility model should be determined by the scope of the claims.

Claims

1. A temperature and vibration monitoring framework based on along-line equalization parallel, characterized in that, The application relates to a fiber passive control cabinet, a plurality of temperature and vibration sensor groups connected with fibers drawn out of the fiber passive control cabinet, wherein the temperature and vibration sensor groups comprise N fiber passive temperature and vibration sensors arranged in parallel, N is greater than or equal to 1, the fiber passive temperature and vibration sensors absorb light signals of different wavelengths, each of the fiber passive temperature and vibration sensors corresponds to an independent light signal pair, and the light signals in the light signal pair are of different types. The fiber passive control cabinet comprises a control cabinet box, a temperature and vibration demodulator arranged in the control cabinet box and a fiber distribution rack, the fiber distribution rack is used for fusing and distributing fiber cores of the fibers, and the temperature and vibration demodulator is connected with the fiber distribution rack through optical jumpers.

2. The temperature vibration monitoring framework based on along-line equal division parallel according to claim 1, characterized in that, An optical splitter is arranged between the temperature and vibration demodulator and the fiber distribution rack, the input end of the optical splitter is connected with the temperature and vibration demodulator, the output end of the optical splitter is connected with the fiber distribution rack, each fiber core pair drawn out of the fiber distribution rack is connected with only one fiber passive temperature and vibration sensor, and the light signals of different fiber cores in the fiber core pair are of different types.

3. The temperature vibration monitoring framework based on along-line equal-division parallel according to claim 2, characterized in that, A plurality of optical splitters are arranged, different optical splitters are connected with the temperature and vibration demodulator through different optical jumpers, and the light signals distributed by the optical splitters are connected with the fiber distribution rack through optical jumpers.

4. The temperature vibration monitoring framework based on along-line equal-division parallel according to claim 3, characterized in that, Optical fiber distribution boxes are arranged between the fiber passive control cabinet and the temperature and vibration sensor groups, the receiving end of each optical fiber distribution box is connected with only one fiber core pair of the fibers, two optical splitters are arranged in the optical fiber distribution box, the two optical splitters are connected with different fiber cores in the fiber core pair, and the output end of the optical fiber distribution box draws out a plurality of sensor connecting lines, and each sensor connecting line is connected with only one fiber passive temperature and vibration sensor.

5. The temperature vibration monitoring framework based on along-line equal-division parallel according to claim 2 or 3, characterized in that, The fiber core pairs distributed by the fiber distribution rack are sequentially connected with different optical fiber distribution boxes.

6. The temperature vibration monitoring framework based on along-line equal division parallel according to claim 5, characterized in that, The fiber core pairs distributed by the fiber distribution rack are all connected with a first optical fiber distribution box, the first optical fiber distribution box is connected with one fiber core pair, the remaining fiber core pairs are drawn out from the first optical fiber distribution box and enter second optical fiber distribution boxes, and the fiber core pairs drawn out from the N-1th optical fiber distribution box become one and are connected with an Nth optical fiber distribution box.

7. The temperature vibration monitoring framework based on along-line equal-division parallel according to claim 5, characterized in that, A control system is further arranged, and the control system is electrically connected with the temperature and vibration demodulator.

8. The temperature vibration monitoring framework based on along-line equal-division parallel according to claim 2, characterized in that, The control system comprises a PLC controller arranged in the control cabinet box and a man-machine operation interface embedded on the control cabinet box, and the PLC controller is electrically connected with the man-machine operation interface and the temperature and vibration demodulator.

9. The temperature vibration monitoring framework based on along-line equalization parallel according to claim 8, characterized in that, The control system is an upper computer, and the upper computer is electrically connected with the temperature and vibration demodulator through a network cable or an optical cable.

10. The temperature vibration monitoring framework based on along-line equalization parallel according to claim 8, characterized in that, ​

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