CN116972766A - Dynamic strain sensing system for glass supporting part - Google Patents

Dynamic strain sensing system for glass supporting part Download PDF

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Publication number
CN116972766A
CN116972766A CN202310992132.6A CN202310992132A CN116972766A CN 116972766 A CN116972766 A CN 116972766A CN 202310992132 A CN202310992132 A CN 202310992132A CN 116972766 A CN116972766 A CN 116972766A
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CN
China
Prior art keywords
glass
shaped
supporting part
optical fiber
sensing system
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Pending
Application number
CN202310992132.6A
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Chinese (zh)
Inventor
杜高伦
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sichuan Mingrenju Doors and Windows Co Ltd
Original Assignee
Sichuan Mingrenju Doors and Windows Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sichuan Mingrenju Doors and Windows Co Ltd filed Critical Sichuan Mingrenju Doors and Windows Co Ltd
Priority to CN202310992132.6A priority Critical patent/CN116972766A/en
Publication of CN116972766A publication Critical patent/CN116972766A/en
Pending legal-status Critical Current

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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01BMEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B11/00Measuring arrangements characterised by the use of optical techniques
    • G01B11/16Measuring arrangements characterised by the use of optical techniques for measuring the deformation in a solid, e.g. optical strain gauge
    • G01B11/161Measuring arrangements characterised by the use of optical techniques for measuring the deformation in a solid, e.g. optical strain gauge by interferometric means

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Length Measuring Devices By Optical Means (AREA)

Abstract

The application relates to the technical field of door and window glass supporting safety, in particular to a dynamic strain induction system of a glass supporting part, which comprises the following components: a glass cushion block contacted with the end face of the glass; the free end of the stress arm is contacted with the side surface of the glass, and the glass can elastically deform when vibrating; the optical fiber sensing device is arranged on the supporting part and used for detecting the deformation of the supporting part, the grating of the optical fiber sensing device can deform along with the elastic deformation of the supporting part, the optical fiber sensing device is integrated on the supporting part, the supporting part deforms due to the vibration of glass, the grating of the optical fiber sensing device is further driven to deform, the deformation of the glass under the condition of bearing wind pressure or impact can be detected in real time, and the basis can be provided for the structural design of glass cushion blocks and sectional materials.

Description

Dynamic strain sensing system for glass supporting part
Technical Field
The application relates to the technical field of door and window glass supporting safety, in particular to a dynamic strain sensing system of a glass supporting part.
Background
Glass doors and windows are favored by more and more users because of their good permeability and aesthetic effect. Most of the existing building structural designs are designed with large-size glass doors and windows, the glass doors and windows enclose the internal environment of the house, and the glass doors and windows are boundaries between the internal environment of the house and the external environment, so that the use safety of the glass doors and windows becomes very important.
Furthermore, most glass doors and windows are currently provided with double glazing doors and windows in order to increase the sound insulation effect of the glass doors and windows, so that the whole glass door and window is very heavy, which puts higher demands on the structural members for carrying the glass door and window. In order to prevent the glass from contacting the supporting structural member hard, the prior art means is usually to provide a glass cushion block between the glass and the supporting structural member, and the glass cushion block can buffer the impact to the supporting structural member due to the vibration of the glass.
However, due to different environments, the dynamic wind pressure of the glass door and window is different, such as typhoon weather occurs in the south, the typhoon weather is generally accompanied by high-grade wind power and storm, and sand storm weather is often encountered in the north, besides the impact of high-grade wind power and the impact of particulate matters on the glass. Therefore, because the environment is different, the wind force value is different, the impact on the glass door and window is different, and the strain of the glass is different due to different wind pressure or impact at the moment. Meanwhile, the magnitude of the strain of the glass is related to not only the force to which the glass is subjected, but also structural components thereof, such as profiles, adhesive strips and the like. Therefore, the wind pressure resistance of the door and window can be indirectly evaluated by measuring the strain quantity of the glass under specific wind pressure, and the design of the structural part of the door and window of the glass can be further guided by measuring and analyzing the strain quantity of specific parts of the glass.
Therefore, how to detect the dynamic strain of glass, whether based on safety considerations or based on subsequent improvements in the design of the support structure, is of great importance.
Disclosure of Invention
In order to solve the above-mentioned problems in the prior art, the present application provides a dynamic strain sensing system for a glass support, comprising:
a glass cushion block contacted with the end face of the glass;
the free end of the supporting part is contacted with the side surface of the glass (4) and can elastically deform when the glass vibrates;
the optical fiber sensing device is arranged on the supporting part and used for detecting deformation of the supporting part, the grating of the optical fiber sensing device can deform along with elastic deformation of the supporting part, the optical fiber sensing device is integrated on the supporting part, the supporting part deforms due to vibration of glass, the grating of the optical fiber sensing device is further driven to deform, and the strain of the glass can be detected in real time.
Further, the support part is L-shaped, and the free end of the L-shape is contacted with the side surface of the glass.
Further, the supporting part is I-shaped, the end part of the I-shaped is connected with a stress bearing part which is arranged parallel to the top surface of the glass cushion block at intervals, and the free end of the stress bearing part is contacted with the side surface of the glass.
Further, the supporting part is I-shaped, and the one end of I-shaped sets up the arc shell fragment, optical fiber sensing device install in on the arc shell fragment, the other end contacts with the glass side, and the arc shell fragment makes under the same vibrations range of glass, and optical fiber sensing device's deformation volume is bigger, further improves detection precision.
Further, set up the yielding area on the supporting part along its width direction, the thickness in yielding area is less than the thickness in other areas of supporting part to make the deformation volume that forms at the micro vibrations displacement of glass, yielding area is more yielding, increase the response sensitivity of optical fiber sensing device on the supporting part, make the glass displacement under the wind pressure effect easily monitored, improved detection precision.
Further, the elastic coefficient of the arc-shaped elastic sheet is larger than that of the supporting part.
Further, the longitudinal section of the easily deformable area is S-shaped, and the S-shaped structure enables the easily deformable area to be deformed more easily, so that the detection sensitivity is further improved.
Further, be provided with the V-arrangement groove on the supporting part, the bottom surface of V-arrangement groove is less than the supporting part bottom and sets up, the extrusion piece has been placed to the V-arrangement inslot, its top surface is higher than V-arrangement groove top surface when the extrusion piece is placed in the V-arrangement groove, under the exogenic action, extrusion piece inflation extrusion V-arrangement groove to make the free end of supporting part support tight glass side, make the supporting part can more sensitively feel glass stress's change, in order to improve detection sensitivity.
Further, the bulge is arranged on one side of the glass cushion block, which is in contact with the glass, and the bulge can buffer partial stress generated by vibration of the glass, so that the stress born by the glass cushion block is reduced, and the service life of the glass cushion block is prolonged.
Further, a groove is formed in one surface, opposite to the protrusion, of the glass cushion block, and the groove is used for matching with a supporting piece which is matched with the glass cushion block.
The beneficial effects of the present application are embodied in that,
the optical fiber sensing device is integrated on the supporting part on the glass cushion block, the vibration of the glass can deform the supporting part, so that the optical fiber sensing device is driven to deform, the dynamic stress born by the glass can be detected in real time, and a basis is provided for the design of the glass cushion block and the supporting part;
the arc-shaped elastic sheet is adopted to install the optical fiber sensing device, so that the deformation of the optical fiber sensing device is larger and the detection sensitivity is improved under the condition that the glass has the same vibration amplitude, thereby improving the detection precision;
the supporting part is provided with the deformable area, so that deformation formed by micro vibration displacement of the glass is easy to detect, and the detection precision is improved.
Drawings
FIG. 1 is a schematic diagram of a detection system according to embodiment 4 of the present application when the support portion is L-shaped;
FIG. 2 is a schematic diagram of the detection system according to the embodiment 4 of the present application when the support portion is I-shaped;
FIG. 3 is a schematic diagram of a detection system according to embodiment 4 of the present application when the support portion is I-type;
fig. 4 is a schematic view of the state of the support portion of the detection system according to embodiment 1 of the present application when the support portion is deformed;
FIG. 5 is a schematic diagram of a detection system according to embodiment 3 of the present application;
FIG. 6 is a schematic diagram of a detection system according to embodiment 2 of the present application;
FIG. 7 is a schematic diagram showing the installation of the detection system and glass when the support part of embodiment 1 is L-shaped;
FIG. 8 is a schematic view showing the installation of the inspection system and glass when the support portion of embodiment 3 of the present application is I-shaped;
reference numerals: the glass comprises a 1-glass cushion block, a 11-bulge, a 12-groove, a 2-supporting part, a 21-arc-shaped elastic sheet, a 22-bending part, a 23-V-shaped groove, a 24-extrusion block, a 25-stress bearing part, a 3-optical fiber sensing device, a 31-grating and 4-glass.
Detailed Description
The following description of the embodiments of the present application 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 application, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
Example 1:
referring to fig. 4, a glass support dynamic strain sensing system of the present application comprises: glass cushion block 1, supporting part 2, optical fiber sensing device 3.
The glass cushion block 1 is arranged between the glass 4 and the supporting piece, the end face of the glass 4 is in contact with the glass cushion block 1, the glass cushion block 1 is made of elastic materials, the structure of the glass cushion block 1 can be adjusted according to the needs, the bottom of the glass cushion block can be a plane, and the structure of the glass cushion block can be adjusted according to the structural needs of the supporting piece (generally a section bar).
The supporting part 2 is arranged on the glass cushion block 1, the supporting part 2 is generally vertically arranged at the end part of the glass cushion block 1, the free end of the supporting part 2 is contacted with the side surface of the glass 4, so that the supporting part 2 can elastically deform during glass vibration, preferably, the supporting part 2 is made of an elastic material so as to ensure that the supporting part 2 can deform when being stressed by the glass 4, and preferably, the supporting part 2 and the glass cushion block 1 can be integrally formed.
The optical fiber sensing device 3 is arranged on the supporting part 2 and is contacted with the side surface of the glass 4 for detecting the deformation amount of the supporting part 2, the optical fiber sensing device 3 comprises a grating 31, the grating 31 is composed of a series of parallel stripes or lines, the intervals are arranged periodically, the grating 31 of the optical fiber sensing device 3 deforms along with the elastic deformation of the supporting part 2, and when the grating deforms, the stripe interval or direction of the grating also changes, so that the diffraction of light also changes. The optical fiber sensor further comprises a light source, an interference image acquisition device and a data processing device, wherein the light source is arranged at the end part of the optical fiber, after the optical fiber is deformed, the fringe spacing of the grating is changed, the interference image acquisition device converts diffraction patterns into interference images by using an optical interferometer and records the interference images by using a camera or other image acquisition devices, and the data processing unit calculates the size of the strain by analyzing the change of the fringe spacing or direction in the interference images.
Since the main vibration direction is the direction vertical to the side surface of the glass after the glass bears wind pressure, at least one optical fiber sensing device 3 is arranged along the direction vertical to the top surface of the glass cushion block 1 on the inner side surface of the supporting part 2, when the supporting part 2 is not deformed, the grating 31 of the optical fiber sensing device 3 is in a straightening state, and when the supporting part 2 is deformed, the grating 32 deforms along with the supporting part 2, so that the dynamic strain detection of the supporting part 2 is realized; when the optical fiber sensor device 3 is provided in plural, the detection of the deformation amount of the plurality of regions of the supporting portion 2 can be realized, so that the detection accuracy can be improved.
According to the embodiment, the optical fiber sensing device is arranged on the supporting structure of the glass cushion block to detect the strain quantity of the glass, so that an additional manufacturing strain sensor is not needed, and the profile structure of the glass door and window is not needed to be changed. The position where the glass cushion block is arranged on the glass door and window is also a weak stress position of the glass door and window, the position is used as a cutting-in point to realize the monitoring of the strain of the glass door and window, and the structural design of the section bar at the position can be further fed back.
In order to reduce the stress born by the glass cushion block 1, a protrusion 11 is arranged on one side of the glass cushion block 1 contacted with glass, the protrusion 11 is arranged along the width direction of the glass cushion block 1, and the protrusion 11 can be tooth-shaped protrusions 11 which are equidistantly arranged along the length direction of the glass cushion block 1.
The support part 2 of this embodiment is L-shaped, and the free end of the L-shape contacts the side surface of the glass 4, as shown in fig. 7. When the glass 4 vibrates, the L-shaped free end drives the supporting part 2 to deform; when the supporting part 2 is not deformed, the grating 31 of the optical fiber sensing device 3 is in a straightening state, and when the supporting part 2 is deformed, the deformation state is shown in fig. 4 and rotates in a direction away from the side surface of the glass 4, so that the grating 31 of the optical fiber sensing device 3 is driven to deform, and real-time detection of the deformation quantity of the supporting part 2 is realized.
Referring to fig. 3 and 6, in order to improve the detection accuracy, starting from increasing the sensitivity of stress induction, the support portion 2 is provided with a deformable region 22 along the width direction thereof, and the thickness of the deformable region 22 is smaller than that of other regions of the support portion 2, so that the deformable region 22 is more deformable due to the smaller thickness; the support part 2 is divided into different stress deformation regions, and the grating 31 is used to preferentially detect deformation amounts of the more deformable regions, so as to improve the stress detection sensitivity of the support part 2.
The deformable region 22 may be one or more grooves along the width direction of the supporting portion 2, may be provided with grooves on one side, or may be provided with grooves on both sides, so as to ensure that the thickness of the deformable region is smaller than that of other regions of the supporting portion 2, and the deformable region is easy to deform.
Preferably, in order to further improve the detection sensitivity, the deformation amount formed by the micro vibration displacement of the glass is easy to detect, the longitudinal section of the easily deformable region 22 is S-shaped, the S-shaped structure can restore elasticity by itself, the wind pressure vibration level (dynamic response with the frequency up to tens of hertz) can be realized to follow the response, the measurement is completely followed at such frequency, and the situation that the vibration and the measurement response frequency are not matched can not occur.
Preferably, the deformation-prone region 22 is disposed in the middle of the support part 2, and the center line thereof is disposed at a position flush with the center line of the grating 31 of the optical fiber sensor, so that the deformation amount of the deformation-prone region 22 can be preferentially detected, thereby improving the stress detection sensitivity of the support part 2.
Example 2:
referring to fig. 6, as another embodiment of the present application, the support part 2 is of an I-type.
Preferably, stress bearing parts 25 arranged parallel to the top surface of the glass cushion block 1 are connected at intervals at the end part of the I shape, and the free ends of the stress bearing parts 25 are contacted with the side surface of the glass 4; the stress receiving portions 25 in contact with the glass 4 are smaller in volume and are provided at intervals so as to be more easily deformed, thereby increasing the detection sensitivity.
In this embodiment, the support portion 2 may be provided with a deformable region 22, which has the same structure as that of embodiment 1, and will not be described here.
Examples
Referring to fig. 5, as another embodiment of the present application, the supporting portion 2 is i-shaped, and an arc spring piece 21 is disposed at one end of the i-shape; preferably, the cambered surface of the arc-shaped elastic sheet 21 is arranged near one side of the I-shaped structure, a cavity is formed between the cambered surface and the I-shaped structure, the optical fiber sensing device 3 is arranged on the arc-shaped elastic sheet 21, and the other end of the optical fiber sensing device contacts with the side surface of the glass 4, as shown in fig. 8; preferably, the optical fiber sensing device 3 is arranged on the convex surface of the arc-shaped elastic sheet 21, and the plane where the central line is located is perpendicular to the arc-shaped elastic sheet 21 and coincides with the deformation track of the arc-shaped elastic sheet 21 so as to improve the stress detection sensitivity. In the embodiment, when the supporting portion 2 is not deformed, the grating 31 of the optical fiber sensing device 3 is in an arc state consistent with the arc spring piece 21, and when the supporting portion 2 is deformed, the curvature of the grating 31 is changed.
Preferably, the arc-shaped elastic sheet 21 is provided with a deformable region 22 along the width direction thereof, the thickness of the deformable region 22 is smaller than that of other regions of the arc-shaped elastic sheet 21, and the deformable region 22 is more deformable due to the smaller thickness, so that the supporting portion 2 is divided into different stress deformation regions, and the grating 31 is used for preferentially detecting deformation of the more deformable region, thereby improving the stress detection sensitivity of the supporting portion 2.
Preferably, in order to further improve the detection sensitivity, the deformation amount formed by the micro vibration displacement of the glass is easy to detect, the longitudinal section of the easily deformable region 22 is S-shaped, the S-shaped structure can restore elasticity by itself, the wind pressure vibration level (dynamic response with the frequency up to tens of hertz) can be realized to follow the response, the measurement is completely followed at such frequency, and the situation that the vibration and the measurement response frequency are not matched can not occur.
In this embodiment, the deformable region 22 may be disposed on the side of the support portion 2 near the glass, and the structure is the same as that in embodiment 1, and will not be described here again.
Examples
Referring to fig. 1-3, as another embodiment of the present application, in order to match the structure of different supporting members (typically profiles), the surface of the glass mat 1 opposite to the protrusion 11 is provided with a groove 12, and the groove 12 may be one groove or may be rectangular grooves equidistantly arranged along the length direction of the glass mat 1.
Examples
Referring to fig. 3 and 6, as another embodiment of the present application, in order to further improve the detection accuracy and increase the sensitivity of stress induction, the support portion 2 is provided with a V-shaped groove 23, the bottom surface of the V-shaped groove 23 is lower than the bottom of the support portion 2, an extrusion block 24 is placed in the V-shaped groove 23, the top surface of the extrusion block 24 is higher than the top surface of the V-shaped groove 23 when placed in the V-shaped groove 23, the cross section of the extrusion block 24 may be in a triangular shape with a size matching with the V-shaped groove 23, and the extrusion block 24 is extruded to expand the V-shaped groove 23, so that the free end of the support portion 2 moves by 1-3mm toward the side surface of the glass, and is abutted against the side surface of the glass more tightly, thereby further improving the sensitivity of stress detection. In particular, the V-shaped groove 23 and the pressing block are provided on the stress receiving portion 25, so that the free end of the supporting portion 2 is easily displaced in a direction close to the side surface of the glass, and can be abutted against the side surface of the glass 4, thereby further improving the detection sensitivity.
In the description of the embodiments of the present application, it should be understood that the terms "upper," "lower," "top," "bottom," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate description of the present application and simplify the description, and do not indicate or imply that the devices or elements 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 application.
In the description of the present application, unless otherwise indicated, the meaning of "a plurality" is two or more.
In describing embodiments of the present application, it should be noted that the terms "mounted," "connected," and "coupled" are to be construed broadly, and may be either fixedly coupled, detachably coupled, or integrally coupled, for example, unless otherwise indicated and clearly defined; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present application will be understood in specific cases by those of ordinary skill in the art.
In the description of embodiments of the application, a particular feature, structure, material, or characteristic may be combined in any suitable manner in one or more embodiments or examples.
Although embodiments of the present application 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 application, the scope of which is defined in the appended claims and their equivalents.

Claims (10)

1. A glass support dynamic strain sensing system, comprising:
a glass cushion block (1) contacted with the end face of the glass (4);
the support part (2) is arranged at the side end of the glass cushion block (1), and the free end of the support part (2) is contacted with the side surface of the glass (4) and can elastically deform when the glass (4) vibrates;
the optical fiber sensing device (3) is arranged on the supporting part (2) and used for detecting deformation quantity of the supporting part (2), and the grating (31) of the optical fiber sensing device (3) can deform along with elastic deformation of the supporting part (2) so that fringe spacing or direction of the grating (31) changes, and further strain quantity of glass is measured.
2. The glass support dynamic strain sensing system of claim 1, wherein: the support part (2) is L-shaped, and the free end of the L-shaped is contacted with the side surface of the glass (4).
3. The glass support dynamic strain sensing system of claim 1, wherein: the support part (2) is I-shaped, stress bearing parts (25) which are arranged parallel to the top surface of the glass cushion block (1) are connected at intervals at the end parts of the I-shaped, and the free ends of the stress bearing parts (25) are contacted with the side surface of the glass (4).
4. The glass support dynamic strain sensing system of claim 1, wherein: the optical fiber sensor is characterized in that the supporting part (2) is I-shaped, one end of the I-shaped part far away from the glass is provided with an arc-shaped elastic sheet (21), the optical fiber sensor (3) is arranged on the arc-shaped elastic sheet (21), and the other end of the I-shaped part is in contact with the side face of the glass (4).
5. The glass support dynamic strain sensing system of any of claims 1-4, wherein: the support part (2) is provided with a deformable region (22) along the width direction, and the thickness of the deformable region (22) is smaller than that of other regions of the support part (2).
6. The glass support dynamic strain sensing system of claim 4, wherein: the elastic coefficient (21) of the arc-shaped elastic sheet is larger than that of the supporting part (2).
7. The glass support dynamic strain sensing system of claim 6, wherein: the longitudinal section of the easily deformable region (22) is S-shaped.
8. The glass support dynamic strain sensing system of claim 5, wherein: the novel plastic extrusion device is characterized in that a V-shaped groove (23) is formed in the supporting portion (2), the bottom surface of the V-shaped groove (23) is lower than the bottom of the supporting portion (2), an extrusion block (24) is placed in the V-shaped groove (23), and the top surface of the extrusion block (24) is higher than the top surface of the V-shaped groove (23) when placed in the V-shaped groove (23).
9. The glass support dynamic strain sensing system of claim 5, wherein: a bulge (11) is arranged on one side of the glass cushion block (1) contacted with glass.
10. The glass support dynamic strain sensing system of claim 10, wherein: a groove (12) is formed in one surface, opposite to the protrusion (11), of the glass cushion block (1).
CN202310992132.6A 2023-08-08 2023-08-08 Dynamic strain sensing system for glass supporting part Pending CN116972766A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202310992132.6A CN116972766A (en) 2023-08-08 2023-08-08 Dynamic strain sensing system for glass supporting part

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202310992132.6A CN116972766A (en) 2023-08-08 2023-08-08 Dynamic strain sensing system for glass supporting part

Publications (1)

Publication Number Publication Date
CN116972766A true CN116972766A (en) 2023-10-31

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Application Number Title Priority Date Filing Date
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117232983A (en) * 2023-11-13 2023-12-15 四川名人居门窗有限公司 Dynamic wind pressure detection system and method for system doors and windows

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117232983A (en) * 2023-11-13 2023-12-15 四川名人居门窗有限公司 Dynamic wind pressure detection system and method for system doors and windows
CN117232983B (en) * 2023-11-13 2024-02-13 四川名人居门窗有限公司 Dynamic wind pressure detection system and method for system doors and windows

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