CN220380525U - Building support and hanger monitoring system based on fiber bragg grating sensor - Google Patents
Building support and hanger monitoring system based on fiber bragg grating sensor Download PDFInfo
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- CN220380525U CN220380525U CN202321873845.2U CN202321873845U CN220380525U CN 220380525 U CN220380525 U CN 220380525U CN 202321873845 U CN202321873845 U CN 202321873845U CN 220380525 U CN220380525 U CN 220380525U
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Abstract
The utility model relates to the technical field of construction monitoring, in particular to a building support and hanger monitoring system based on a fiber bragg grating sensor, which comprises a data acquisition module and a cloud server, wherein the data acquisition module and the cloud server are in information interaction through a wireless communication module; the data acquisition module comprises a fiber bragg grating sensing assembly, a fiber bragg grating mediator and an acquisition host; the cloud server comprises an alarm unit, a data operation unit and a processing unit. According to the building support and hanger monitoring system, the three-dimensional stress value is obtained, the maximum shear stress value of the corresponding building support is obtained through calculation, the maximum shear stress value is compared with the preset threshold value, and the alarm is carried out in real time according to the comparison result, so that the safety risk is reduced, the maintenance cost is reduced, and the engineering safety and the sustainability are improved.
Description
Technical Field
The utility model relates to the technical field of construction monitoring, in particular to a building support and hanger monitoring system based on a fiber bragg grating sensor.
Background
Aiming at the situations of wrong space planning, special equipment requirements or tense space layout requirements of a basement equipment room, and the like, part of large-scale equipment needs to be fixed on the top surface of concrete by using angle steel brackets or other brackets so as to be suspended. However, the following problems exist in the aspects of monitoring the stress and deformation of a concrete structure and an equipment support and hanger in a narrow space in the prior art:
1. the traditional monitoring method cannot accurately acquire the stress change of the hoisting member in real time;
2. potential problems such as fatigue and bolt looseness of the support and hanger can not be effectively predicted;
3. a layout solution for compact space is lacking.
Disclosure of Invention
The utility model aims to provide a building support and hanger monitoring system based on a fiber bragg grating sensor, which aims to solve the problems in the background technology.
The technical scheme of the utility model is as follows: the building support and hanger monitoring system based on the fiber bragg grating sensor comprises a data acquisition module and a cloud server, wherein information interaction is carried out between the data acquisition module and the cloud server through a wireless communication module;
the data acquisition module comprises a fiber bragg grating sensing assembly, a fiber bragg grating mediator and an acquisition host, wherein the fiber bragg grating sensing assembly is used for acquiring a three-dimensional stress value of a building support and hanger and sending the three-dimensional stress value to the fiber bragg grating mediator;
the fiber bragg grating mediator is used for converting the three-dimensional stress value into a digital signal and sending the digital signal to the acquisition host;
the acquisition host is used for transmitting the received digital signals to the cloud server through the wireless communication module;
the cloud server comprises an alarm unit, a data operation unit and a processing unit, wherein the processing unit is used for acquiring stress change data of the building support and hanger according to digital signals and sending the stress change data to the data operation unit;
the data operation unit is used for carrying out pre-judging value on the received stress change data and preset database data and sending the pre-judging value to the alarm unit;
the alarm unit is used for judging the magnitude between the pre-judging value and a preset threshold value, and when the pre-judging value is not smaller than the preset threshold value, the alarm unit sends out an alarm signal, otherwise, the alarm unit does not send out an alarm signal.
Still further, fiber bragg grating sensing assembly is including response framework and connecting rod, the response framework is fixed in one side of building and is hung the support, building is hung the support and is all set up the lower extreme at the fixed plate with the response framework, just connect through the connecting rod between response framework and the fixed plate.
Further, the maximum shear stress value and the maximum value of the shear strain corresponding to the three-dimensional stress value of the building support and hanger are specifically:
wherein:wavelength change amount obtained for fiber grating strain sensor, < >>Sigma, the wavelength change amount acquired by the fiber bragg grating temperature sensor 1 Is the first principal stress, sigma 2 Is the second principal stress, sigma 3 Is the third principal stress, τ max At maximum shear stress value, gamma max At maximum of shear strain, a ε1 For the strain sensitivity coefficient, epsilon is the positive strain measured by the building support and hanger on the X axis, the Y axis, the Z axis, the XY axis, the XZ axis and the YZ axis, and a T1 Temperature sensitivity coefficient corresponding to fiber bragg grating strain sensor, < >>For a, a T2 The temperature sensitivity coefficient corresponding to the fiber bragg grating temperature sensor is that E is the elastic modulus, mu is a constant, epsilon 1 Epsilon is the first principal strain 2 For the second principal strain, ε 3 Is the third principal strain.
Furthermore, the collection host comprises a GIS unit, wherein the GIS unit is used for acquiring the position data of the building support and hanger and transmitting the position data of the building support and hanger to the cloud server through the wireless communication module.
Further, the connecting rod is at least one spring strain gauge.
Furthermore, the induction frame body comprises a fiber bragg grating strain sensor and a fiber bragg grating temperature sensor, wherein the fiber bragg grating temperature sensor is arranged on the side edge and the diagonal line of the induction frame body, and meanwhile, the fiber bragg grating strain sensor is arranged on the fiber bragg grating temperature sensor.
Further, the processing unit obtains the maximum shear stress value and the maximum value of the shear strain corresponding to the building support and hanger, and sends the maximum shear stress value and the maximum value of the shear strain corresponding to the building support and hanger to the data operation unit.
The utility model provides a building support and hanger monitoring system based on a fiber bragg grating sensor through improvement, which has the following improvement and advantages compared with the prior art:
according to the building support and hanger monitoring system, the three-dimensional stress value is obtained, the maximum shear stress value of the corresponding building support is obtained through calculation, the maximum shear stress value is compared with the preset threshold value, and the alarm is carried out in real time according to the comparison result, so that the safety risk is reduced, the maintenance cost is reduced, and the engineering safety and the sustainability are improved.
Drawings
The utility model is further explained below with reference to the drawings and examples:
FIG. 1 is a system block diagram of a building support and hanger monitoring system of the present utility model;
FIG. 2 is a schematic diagram of the construction of the monitoring system of the present utility model;
FIG. 3 is a schematic diagram of a sensing frame of the present utility model;
reference numerals illustrate:
1. a fixing plate; 2. a building hanging bracket; 3. an induction frame; 4. a connecting rod; 5. a fiber grating strain sensor; 6. a fiber grating temperature sensor.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
It should be noted that, in the description of the present utility model, the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, only for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or elements to be referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.
Furthermore, it should be understood that the dimensions of the various elements shown in the figures are not drawn to actual scale, e.g., the thickness or width of some layers may be exaggerated relative to other layers for ease of description.
It should be noted that like reference numerals and letters refer to like items in the following figures, and thus once an item is defined or illustrated in one figure, no further detailed discussion or description thereof will be necessary in the following description of the figures.
Referring to fig. 1-3, the embodiment provides a building support and hanger monitoring system based on a fiber bragg grating sensor, which comprises a data acquisition module and a cloud server, wherein information interaction is performed between the data acquisition module and the cloud server through a wireless communication module. Notably, the wireless communication modules in the present embodiment include, but are not limited to, bluetooth Low energy, loRa or NB-IoT.
The data acquisition module comprises a fiber bragg grating sensing assembly, a fiber bragg grating mediator and an acquisition host, wherein the fiber bragg grating sensing assembly is used for acquiring a three-dimensional stress value of a building support and hanger and sending the three-dimensional stress value to the fiber bragg grating mediator. Specifically, the fiber bragg grating sensing assembly comprises a sensing frame body 3 and a connecting rod 4, wherein the sensing frame body 3 is fixed on one side of the building hanging bracket 2, the building hanging bracket 2 and the sensing frame body 3 are both arranged at the lower end of the fixing plate 1, and the sensing frame body 3 is connected with the fixing plate 1 through the connecting rod 4. Further, the connecting rod 4 is at least one spring strain gauge.
The induction frame body 3 comprises fiber bragg grating strain sensors 5 and fiber bragg grating temperature sensors 6, wherein the fiber bragg grating temperature sensors 6 are arranged on the side edges and diagonal lines of the induction frame body 3, and meanwhile, each fiber bragg grating temperature sensor 6 is provided with the fiber bragg grating strain sensor 5.
In this embodiment, the fiber bragg grating mediator is configured to receive a three-dimensional stress value of the building support and hanger sent by the fiber bragg grating sensing component, convert the three-dimensional stress value into a digital signal, and send the digital signal to the acquisition host.
The acquisition host is used for receiving the digital signals sent by the fiber bragg grating modulator and transmitting the received digital signals to the cloud server through the wireless communication module. And the collection host comprises a GIS unit, wherein the GIS unit is used for acquiring the position data of the building support and hanger and transmitting the position data of the building support and hanger to the cloud server through the wireless communication module.
Specifically, the cloud server comprises an alarm unit, a data operation unit and a processing unit. The processing unit is used for receiving the digital signals sent by the acquisition host through the wireless communication module, carrying out local processing and analysis according to the digital signals, calculating stress change conditions of all parts in the building support and hanger, namely acquiring stress change data corresponding to the building support and hanger, and simultaneously sending the stress change data to the data operation unit.
In this embodiment, the connection point of the connection rod 4 is used as an origin, and the X axis, the Y axis, the Z axis, the XY axis, the XZ axis, and the YZ axis corresponding to the origin are respectively provided with 6 fiber bragg grating strain sensors 5, and the body diagonal corresponding to the origin is provided with one fiber bragg grating temperature sensor 6. The 6 fiber bragg grating strain sensors 5 are used for measuring three-dimensional stress values of the building support and hanger, and the fiber bragg grating temperature sensors 6 are used for performing temperature compensation after obtaining the three-dimensional stress values of the building support and hanger.
Specifically, the maximum shear stress value and the maximum value of the shear strain corresponding to the three-dimensional stress value of the building support and hanger are specifically as follows:
wherein:the amount of wavelength change acquired for the fiber grating strain sensor 5,/->For the wavelength change amount, sigma, acquired by the fiber grating temperature sensor 6 1 Is the first principal stress, sigma 2 Is the second principal stress, sigma 3 Is the third principal stress, τ max At maximum shear stress value, gamma max At maximum of shear strain, a ε1 For the strain sensitivity coefficient, epsilon is the positive strain measured by the building support and hanger on the X axis, the Y axis, the Z axis, the XY axis, the XZ axis and the YZ axis, and a T1 Temperature sensitivity coefficient corresponding to the fiber bragg grating strain sensor 5, < >>For a, a T2 The temperature sensitivity coefficient corresponding to the fiber bragg grating temperature sensor 6 is that E is the elastic modulus, mu is a constant, epsilon 1 Epsilon is the first principal strain 2 For the second principal strain, ε 3 Is the third principal strain.
Specifically, after the processing unit obtains the maximum shear stress value and the maximum value of the shear strain corresponding to the building support and hanger, the processing unit sends the maximum shear stress value and the maximum value of the shear strain corresponding to the building support and hanger to the data operation unit.
The data operation unit is used for receiving the maximum shear stress value and the maximum shear strain value corresponding to the building support and hanger sent by the processing unit, carrying out pre-judgment on the received maximum shear stress value and maximum shear strain value corresponding to the building support and hanger and preset database data, and sending the obtained pre-judgment value to the alarm unit.
The alarm unit is used for acquiring the pre-judging value sent by the data operation unit, comparing the pre-judging value with a preset threshold value, and sending out an alarm signal when the pre-judging value is not smaller than the preset threshold value, otherwise, not sending out the alarm signal.
In this embodiment, the following table is the position and size relationship corresponding to the three-dimensional stress value of the building support and hanger, and specifically as follows:
according to the data in the above table, the following table, namely the maximum shear stress value and the maximum value of the shear strain corresponding to the three-dimensional stress value of the building support and hanger, can be obtained, specifically:
and according to the data in the table, simultaneously combining and obtaining the maximum shear stress value and the maximum value of the shear strain corresponding to the three-dimensional stress value of the building support and hanger, and obtaining the pre-judging value corresponding to the building support and hanger. And the working state of the alarm unit can be determined through the comparison of the pre-judging value and the preset threshold value.
Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.
Claims (7)
1. The building support and hanger monitoring system based on the fiber bragg grating sensor is characterized by comprising a data acquisition module and a cloud server, wherein information interaction is carried out between the data acquisition module and the cloud server through a wireless communication module;
the data acquisition module comprises a fiber bragg grating sensing assembly, a fiber bragg grating mediator and an acquisition host, wherein the fiber bragg grating sensing assembly is used for acquiring a three-dimensional stress value of a building support and hanger and sending the three-dimensional stress value to the fiber bragg grating mediator;
the fiber bragg grating mediator is used for converting the three-dimensional stress value into a digital signal and sending the digital signal to the acquisition host;
the acquisition host is used for transmitting the received digital signals to the cloud server through the wireless communication module;
the cloud server comprises an alarm unit, a data operation unit and a processing unit, wherein the processing unit is used for acquiring stress change data of the building support and hanger according to digital signals and sending the stress change data to the data operation unit;
the data operation unit is used for carrying out pre-judging value on the received stress change data and preset database data and sending the pre-judging value to the alarm unit;
the alarm unit is used for judging the magnitude between the pre-judging value and a preset threshold value, and when the pre-judging value is not smaller than the preset threshold value, the alarm unit sends out an alarm signal, otherwise, the alarm unit does not send out an alarm signal.
2. The building support and hanger monitoring system based on the fiber bragg grating sensor according to claim 1, wherein the fiber bragg grating sensing assembly comprises a sensing frame body (3) and a connecting rod (4), the sensing frame body (3) is fixed on one side of a building support hanging frame (2), the building support hanging frame (2) and the sensing frame body (3) are both arranged at the lower end of a fixing plate (1), and the sensing frame body (3) is connected with the fixing plate (1) through the connecting rod (4).
3. The fiber bragg grating sensor-based building support and hanger monitoring system according to claim 1, wherein the maximum shear stress value and the maximum value of shear strain corresponding to the three-dimensional stress value of the building support and hanger are specifically:
wherein:wavelength change amount obtained for fiber grating strain sensor (5), +.>For the wavelength change amount sigma obtained by the fiber grating temperature sensor (6) 1 Is the first principal stress, sigma 2 Is the second principal stress, sigma 3 Is the third principal stress, τ max At maximum shear stress value, gamma max At maximum of shear strain, a ε1 For the strain sensitivity coefficient, epsilon is the positive strain measured by the building support and hanger on the X axis, the Y axis, the Z axis, the XY axis, the XZ axis and the YZ axis, and a T1 Is the temperature sensitivity coefficient corresponding to the fiber bragg grating strain sensor (5)>For a, a T2 The temperature sensitivity coefficient corresponding to the fiber bragg grating temperature sensor (6) is E, the elastic modulus is E, mu is constant, epsilon 1 Epsilon is the first principal strain 2 For the second principal strain, ε 3 Is the third principal strain.
4. The fiber bragg grating sensor-based building support and hanger monitoring system according to claim 1, wherein the acquisition host comprises a GIS unit, and the GIS unit is used for acquiring position data of a building support and hanger and transmitting the position data of the building support and hanger to a cloud server through a wireless communication module.
5. A building support and hanger monitoring system based on fiber bragg grating sensors according to claim 2, characterized in that the connecting rod (4) is at least one spring strain gauge.
6. The building support and hanger monitoring system based on the fiber bragg grating sensor according to claim 2, wherein the sensing frame body (3) comprises a fiber bragg grating strain sensor (5) and a fiber bragg grating temperature sensor (6), the fiber bragg grating temperature sensor (6) is arranged on the side edge and the diagonal line of the sensing frame body (3), and meanwhile the fiber bragg grating strain sensor (5) is arranged on the fiber bragg grating temperature sensor (6).
7. A monitoring system for a building support and hanger based on a fiber bragg grating sensor according to claim 1 or 3, wherein the processing unit obtains a maximum value of a maximum shear stress value and a maximum value of a shear strain corresponding to the building support and hanger, and sends the maximum value of the maximum shear stress value and the maximum value of the shear strain corresponding to the building support and hanger to the data operation unit.
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| CN202321873845.2U CN220380525U (en) | 2023-07-17 | 2023-07-17 | Building support and hanger monitoring system based on fiber bragg grating sensor |
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| CN202321873845.2U CN220380525U (en) | 2023-07-17 | 2023-07-17 | Building support and hanger monitoring system based on fiber bragg grating sensor |
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