CN211149487U - Glass curtain wall structural adhesive in-service detection assembly based on radio frequency tag - Google Patents
Glass curtain wall structural adhesive in-service detection assembly based on radio frequency tag Download PDFInfo
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- CN211149487U CN211149487U CN202020359776.3U CN202020359776U CN211149487U CN 211149487 U CN211149487 U CN 211149487U CN 202020359776 U CN202020359776 U CN 202020359776U CN 211149487 U CN211149487 U CN 211149487U
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Abstract
The utility model relates to a glass curtain wall structural adhesive in-service detection assembly based on radio frequency tags, which comprises a radio frequency tag assembly, wherein the radio frequency tag assembly comprises a base plate and a plurality of radio frequency tags arranged on the base plate, the base plate comprises a bottom plate and 8 side plates, the bottom plate is in a cross shape, and the 8 side plates are respectively and vertically connected with 8 side ends of the bottom plate, namely the upper left side end, the upper right side end, the lower left side end and the lower right side end; the radio frequency tags are respectively arranged on the bottom plate and the side plates; the radio frequency tags on the bottom plate are arranged in pairs in the upper, lower, left and right areas of the cross-shaped bottom plate, and the radio frequency tags of each pair are transversely arranged in parallel in the areas; and the radio frequency tags on the side plates and the radio frequency tags on the bottom plate are arranged in the same direction and aligned. Through the utility model discloses, the structure is glued because of the produced elastic deformation condition of curtain glass aversion in the latent frame glass curtain wall of usable surface acoustic wave radio frequency identification sensing, analyzes its bearing capacity that shifts and assesses the in service state that the structure was glued.
Description
Technical Field
The utility model relates to a glass curtain wall structural adhesive is at labour detection subassembly based on radio frequency identification, belongs to glass curtain wall's detection technology field.
Background
The glass curtain wall, especially the hidden frame glass curtain wall, is widely applied to high-rise and super high-rise buildings in cities. In the hidden frame glass curtain wall structure, a metal outer frame used for clamping glass and bearing the weight of the glass is not arranged, and the curtain wall glass is fixed on a cross beam and a longitudinal beam of the metal inner frame through silicone structural adhesive.
With the increase of service time, under the action of factors such as cold and hot weather effect, sunlight irradiation, wind load, moist corrosive environment and the like, the silicone structural adhesive tends to age, and the phenomena of hardening, embrittlement, reduction of elasticity, cracking due to insufficient displacement bearing capacity, bonding failure and the like occur, meanwhile, the curtain wall glass also has the phenomena of cracking, spontaneous explosion and the like due to structural stress and cold and hot effect, and the potential safety hazard of personal injury and property loss is caused. Therefore, the in-service state of the glass curtain wall including the working state and the safety state needs to be timely and effectively evaluated.
One method for detecting the in-service state of the structural adhesive in the prior art is to extract part of adhesive samples from structural adhesive blocks of a glass curtain wall structure and test the mechanical properties in a laboratory, and the method is a destructive ex-situ test method and cannot judge the current effectiveness of the properties such as elasticity, deflection bearing capacity, binding force and the like of the structural adhesive on site and in real time; one method is to apply load to a glass panel of the curtain wall and detect the mechanical property of the structural adhesive (CN 108489819A, a detection device and an evaluation method for the structural adhesive of the glass curtain wall), although the method belongs to field detection, special test instruments and equipment are needed, the method is a contact detection method, is not suitable for detecting the glass curtain wall of high-rise and super high-rise buildings, and is difficult to accurately simulate the effect of various external factors such as cold and heat load, wind load and the like on the structural adhesive of the glass curtain wall in practical application.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome not enough among the prior art, provide a glass curtain wall structure glues at labour detection subassembly based on radio frequency tags, glass curtain wall structure based on surface acoustic wave radio frequency tags technique is glued real-time, normal position, non-contact and is detected, is evaluateed the means for high-rise and super high-rise building glass curtain wall structure glues detection and control at the labour state.
The utility model aims at realizing like this, a glass curtain wall structure glues at labour detection subassembly based on radio frequency identification, including the radio frequency identification subassembly, the radio frequency identification subassembly includes the base plate, sets up a plurality of radio frequency identification on the base plate, its characterized in that:
the base plate comprises a bottom plate and 8 side plates, the bottom plate is in a cross shape, and the 8 side plates are respectively and vertically connected with 8 side ends of the bottom plate, namely the upper left side end, the upper right side end, the lower left side end and the lower right side end;
the radio frequency tags are respectively arranged on the bottom plate and the side plates; the radio frequency tags on the bottom plate are arranged in pairs in the upper, lower, left and right areas of the cross-shaped bottom plate, and the radio frequency tags of each pair are transversely arranged in parallel in the areas; and the radio frequency tags on the side plates and the radio frequency tags on the bottom plate are arranged in the same direction and aligned.
The radio frequency tags are surface acoustic wave radio frequency tags, and the transverse parallel direction of each surface acoustic wave radio frequency tag is the surface acoustic wave propagation direction of the surface acoustic wave radio frequency tag.
The bottom plate and the side plates are both flexible substrates.
The surface acoustic wave radio frequency tag consists of an interdigital transducer, a plurality of groups of coding reflecting gratings and an antenna which are manufactured on a piezoelectric substrate; the interdigital transducer is positioned at one end of the surface of the piezoelectric substrate, each group of coding reflecting grids are distributed at the other end of the surface of the piezoelectric substrate, and the antenna is connected to two sides of the interdigital transducer; different coding reflecting grating structures in the surface acoustic wave radio frequency tags correspond to different codes, and each surface acoustic wave radio frequency tag has different codes.
The utility model has the advantages of reasonable and simple structure, easy production and manufacture and convenient use, when in use, 8 side plates of the radio frequency tag assembly are fixed at the connecting part of 4 adjacent structural adhesives and the metal inner frame cross beam or the longitudinal beam which is bonded with the structural adhesives, and each side plate stretches across the joint of the structural adhesives and the metal inner frame cross beam or the longitudinal beam, and the radio frequency tag on each side plate correspondingly stretches across the joint of the structural adhesives and the metal inner frame cross beam or the longitudinal beam; the bottom plate of the radio frequency tag assembly is suspended in the gaps of the 4 adjacent structural adhesives.
The working principle of the utility model is as follows:
in the hidden frame glass curtain wall structure, curtain wall glass pre-bonded by double faced adhesive tapes is fixed on a cross beam and a longitudinal beam of a metal inner frame through structural adhesives, and a gap between adjacent curtain wall glass is filled with a sealing foam strip and a sealing adhesive.
When the curtain wall glass is acted by external force, the structural adhesive generates elastic deformation along with the displacement of the curtain wall glass, the deformation quantity of the structural adhesive, namely the displacement bearing capacity of the structural adhesive is related to the in-service state of the structural adhesive, the structural adhesive in the normal service state has good elasticity and adhesiveness, the displacement bearing capacity of the structural adhesive is strong, the structural adhesive which is in service for a long time and continuously acted by external factors such as cold, hot weather, wind load and the like tends to age, and the displacement bearing capacity of the structural adhesive is correspondingly weakened.
The utility model discloses utilize radio frequency identification (surface acoustic wave radio frequency identification) sensing glass curtain wall structure to glue because of the produced elastic deformation condition of curtain wall glass aversion its bearing capacity that shifts promptly, in view of the above evaluate the in active service state that the structure was glued.
The surface acoustic wave radio frequency tag is composed of an interdigital transducer, a plurality of groups of coding reflecting gratings and an antenna which are manufactured on a piezoelectric substrate, and different reflecting grating coding structures correspond to different codes. The utility model provides an each surface acoustic wave radio frequency identification label has the code that differs separately for each surface acoustic wave radio frequency identification label position in glass curtain wall is discerned simultaneously.
When the surface acoustic wave radio frequency tag is applied, an external radio frequency signal transceiver sends a high-frequency pulse signal to each surface acoustic wave radio frequency tag; each surface acoustic wave radio frequency tag receives a high-frequency pulse signal through an antenna and is converted into a surface acoustic wave through an interdigital transducer of the high-frequency pulse signal; each coding reflection grating reflects the surface acoustic wave to an interdigital transducer and converts the surface acoustic wave into a high-frequency echo signal sequence; an external radio frequency signal transceiver receives high-frequency echo signal sequences reflected by the surface acoustic wave radio frequency tags; obtaining the coding information of each surface acoustic wave radio frequency tag after decoding;
when the surface acoustic wave radio frequency tag is applied, the radio frequency tag assembly is fixed at a part where a structural adhesive inside a hidden frame glass curtain wall is connected with a metal inner frame cross beam or a longitudinal beam which is bonded with the structural adhesive, the structural adhesive is conducted to a piezoelectric substrate of the surface acoustic wave radio frequency tag through the substrate due to elastic deformation generated by displacement of the curtain wall glass, so that material parameters of the piezoelectric substrate and structural parameters of a coding reflection grating arranged on the piezoelectric substrate are changed, high-frequency echo pulse time delay of the coding reflection grating is changed, output coding signals of the surface acoustic wave radio frequency tag are changed, wherein the structural adhesive acts on each radio frequency tag on a side plate due to elastic deformation generated by horizontal displacement of the curtain wall glass in the vertical direction and the horizontal direction, and the structural adhesive acts on each radio frequency tag on a bottom plate due to elastic deformation generated by vertical displacement of the curtain wall glass in, the output coded signals of the acoustic surface wave radio frequency tags change correspondingly;
recording and comparing the change condition of each surface acoustic wave radio frequency tag output code signal relative to the reference code thereof, analyzing the elastic deformation change condition of the corresponding structural adhesive, namely the change condition of the deflection bearing capacity thereof, and evaluating the in-service state of the detected glass curtain wall structural adhesive according to the change condition;
or recording and comparing output coding signals of the acoustic surface wave radio frequency tags at different moments, analyzing the elastic deformation of the corresponding structural adhesive, namely the change condition of the deflection bearing capacity of the structural adhesive along with time, and evaluating the in-service state of the detected glass curtain wall structural adhesive according to the change condition.
3. Advantageous effects
The utility model discloses utilize radio frequency identification (surface acoustic wave radio frequency identification) sensing hidden frame glass curtain wall in the structure glue because of the produced elastic deformation condition of curtain wall glass aversion, analyze its bearing capacity that shifts and assess the in-service state that the structure glued from this. The radio frequency tag assembly is fixed at a part where the inner structure glue of the hidden frame glass curtain wall is connected with the metal inner frame cross beam or the longitudinal beam which is bonded with the inner structure glue, and transmits detection information in a radio frequency mode, can be synchronously arranged with the installation process of the hidden frame glass curtain wall, and is suitable for detecting and evaluating the in-service state of the glass curtain wall structure glue regularly or irregularly for a long time. The surface acoustic wave radio frequency tags have different codes and can reflect the in-service state of structural adhesive at different positions in the glass curtain wall. Compared with the method for extracting the structural adhesive sample from the glass curtain wall structure to analyze the mechanical property in a laboratory in the prior art, the method not only avoids the damage to the in-service structural adhesive, but also has the advantages of in-situ and real-time performance; compared with the method for detecting the mechanical property of the structural adhesive by applying load to the curtain wall glass in the prior art, the method has the advantages of reducing the requirements on detecting instruments and equipment, having the advantages of non-contact and real-time detection, and being suitable for detecting and monitoring the in-service state of the glass curtain wall structural adhesive of high-rise and super high-rise buildings.
The utility model discloses based on the radio frequency identification technique, utilize the surface acoustic wave radio frequency identification subassembly to detect meeting an emergency or the deformation at curtain glass surface relevant position, what the structure was glued in the aassessment glass curtain wall is at the labour state, belongs to a non-contact's detection device, simple structure, implementation convenience. The in-situ and real-time measurement of the in-service state of the glass curtain wall can be realized, and the method is particularly suitable for detecting and monitoring the glass curtain wall of high-rise and super high-rise buildings or large-area glass curtain walls.
The glass curtain wall, especially the hidden frame glass curtain wall, is widely applied to high-rise and super high-rise buildings in cities. However, the service life is too long, and under the action of various external environmental factors, the silicone structural adhesive tends to age, becomes hard and brittle, has reduced elasticity and insufficient deflection bearing capacity to crack and bond failure, and meanwhile, the curtain wall glass cracks and explodes due to structural stress and cold and heat effects, so that the potential safety hazard of personal injury and property loss exists. Therefore, the in-service state of the glass curtain wall including the working state and the safety state needs to be timely and effectively evaluated. The market demand is urgent, and the economic benefit is obvious.
Drawings
Fig. 1 is a schematic structural diagram of a radio frequency tag assembly according to the present invention;
fig. 2 is a structural sectional view of the rf tag assembly of the present invention;
fig. 3 is a schematic structural diagram of the surface acoustic wave radio frequency tag of the present invention;
FIG. 4 is a schematic view of the structural relationship between the RF tag assembly and the glass curtain wall to be inspected according to the present invention;
fig. 5 is a cross-sectional view of the structure relationship between the rf tag assembly and the detected glass curtain wall.
In the figure: 1 radio frequency label assembly, 11 base plates, 111 bottom plates, 112 side plates, 12 radio frequency labels, 121 piezoelectric substrates, 122 interdigital transducers, 123 coding reflecting grids, 124 antennae, 2 curtain wall glass, 3 structural adhesive, 4 metal inner frame beams, 5 sealing adhesive strips, 6 sealing foam strips and 7 double-sided adhesive.
Detailed Description
The present invention will be further explained with reference to the drawings and examples.
An in-service detection assembly for a glass curtain wall structural adhesive based on radio frequency tags comprises a radio frequency tag assembly 1, wherein the radio frequency tag assembly 1 comprises a base plate 11 and a plurality of radio frequency tags 12 arranged on the base plate 11, the base plate 11 comprises a bottom plate 111 and 8 side plates 112, the bottom plate 111 is in a cross shape, and the 8 side plates 112 are respectively and vertically connected with 8 side ends of the bottom plate 111, namely the upper left side end, the upper right side end, the lower left side end and the lower right side end; the radio frequency tags 12 are respectively arranged on the bottom plate 111 and the side plates 112; the radio frequency tags 12 on the bottom plate 111 are arranged in pairs in four areas, namely, an upper area, a lower area, a left area and a right area of the cross-shaped bottom plate, and each pair of radio frequency tags 12 are transversely arranged in parallel in the area; the radio frequency tags 12 on the side panels 112 are aligned with the radio frequency tags 12 on the bottom panel 111.
The radio frequency tags 12 are surface acoustic wave radio frequency tags, and the transverse parallel direction of each surface acoustic wave radio frequency tag is the surface acoustic wave propagation direction thereof. The bottom plate 111 and the side plate 112 are both flexible substrates. The surface acoustic wave radio frequency tag is composed of an interdigital transducer 122, a plurality of groups of coding reflecting grids 123 and an antenna 124 which are manufactured on a piezoelectric substrate 121; the interdigital transducer 122 is positioned at one end of the surface of the piezoelectric substrate 121, each group of coding reflecting gratings 123 are distributed at the other end of the surface of the piezoelectric substrate 121, and the antenna 124 is connected to two sides of the interdigital transducer 122; different encoding reflecting grating 123 structures in the surface acoustic wave radio frequency tags correspond to different codes, and each surface acoustic wave radio frequency tag has different codes.
Fig. 1, fig. 2, fig. 3 and fig. 4 show a specific embodiment of the radio frequency tag assembly of the present invention for detecting the in-service status of the structural adhesive of the glass curtain wall.
In the hidden frame glass curtain wall structure, curtain wall glass 2 pre-bonded by double faced adhesive tape 7 is fixed on a metal inner frame beam 4 through structural adhesive 3, and a gap between adjacent curtain wall glass 2 is filled with a sealing foam strip 6 and a sealing adhesive strip 5.
⑴ installation
8 side plates 112 of the radio frequency tag assembly are fixed on the inner sides of 4 adjacent structural adhesives and the metal inner frame beams 4 bonded with the structural adhesives, each side plate 112 spans over the joint of the structural adhesives and the bonded metal inner frame beams 4, and the radio frequency tag 12 on each side plate 112 correspondingly spans over the joint of the structural adhesives and the bonded metal inner frame beams 4;
the bottom plate 111 of the radio frequency tag assembly is suspended in the gap of the 4 structural adhesives.
⑵ detection
①, an external radio frequency signal transceiver sends high-frequency pulse signals to each radio frequency tag 12 (surface acoustic wave radio frequency tag);
② each surface acoustic wave radio frequency tag receives high frequency pulse signal through antenna and converts it into surface acoustic wave by interdigital transducer 122, each coding reflection grating 123 reflects surface acoustic wave to interdigital transducer 122, interdigital transducer 122 converts the surface acoustic wave reflecting coding information into high frequency echo signal sequence and reflects it out;
③, an external radio frequency signal transceiver receives the high-frequency echo signal sequence returned by each surface acoustic wave radio frequency tag, and the output coding information of each surface acoustic wave radio frequency tag is obtained after decoding;
④, comparing the obtained output coding information of each surface acoustic wave radio frequency label with the reference code thereof, and analyzing the change condition of the output coding information of each surface acoustic wave radio frequency label relative to the reference code;
⑤ or comparing the output coding information of each surface acoustic wave radio frequency label acquired at different time, and analyzing the change condition of the output coding information of each surface acoustic wave radio frequency label along with time;
⑥, analyzing the elastic deformation of the structural adhesive caused by the displacement of the curtain wall glass, namely the change condition of the displacement bearing capacity of the structural adhesive, and evaluating the in-service state of the structural adhesive of the glass curtain wall.
Claims (4)
1. The utility model provides a glass curtain wall structural adhesive is at active service detection subassembly based on radio frequency identification, includes radio frequency identification subassembly (1), radio frequency identification subassembly (1) includes base plate (11), sets up a plurality of radio frequency identification (12) on base plate (11), its characterized in that:
the base plate (11) comprises a bottom plate (111) and 8 side plates (112), the bottom plate (111) is in a cross shape, and the 8 side plates (112) are respectively and vertically connected with 8 side ends of the bottom plate (111), namely the upper left side end, the upper right side end, the lower left side end and the lower right side end;
the radio frequency tags (12) are respectively arranged on the bottom plate (111) and each side plate (112); the radio frequency tags (12) on the bottom plate (111) are arranged in pairs in the upper, lower, left and right areas of the cross-shaped bottom plate, and each pair of radio frequency tags (12) are transversely arranged in parallel in the area; the radio frequency tags (12) on the side plates (112) and the radio frequency tags (12) on the bottom plate (111) are arranged in the same direction and aligned.
2. The in-service detection assembly of glass curtain wall structural adhesive based on the radio frequency tag as claimed in claim 1, wherein: the radio frequency tags (12) are surface acoustic wave radio frequency tags, and the transverse parallel direction of each surface acoustic wave radio frequency tag is the surface acoustic wave propagation direction of the surface acoustic wave radio frequency tag.
3. The in-service detection assembly of glass curtain wall structural adhesive based on the radio frequency tag as claimed in claim 1, wherein: the bottom plate (111) and the side plate (112) are both flexible substrates.
4. The in-service detection assembly of the glass curtain wall structural adhesive based on the radio frequency tag as claimed in claim 2, wherein: the surface acoustic wave radio frequency tag is composed of an interdigital transducer (122) manufactured on a piezoelectric substrate (121), a plurality of groups of coding reflecting gratings (123) and an antenna (124); the interdigital transducer (122) is positioned at one end of the surface of the piezoelectric substrate (121), each group of coding reflecting gratings (123) are distributed at the other end of the surface of the piezoelectric substrate (121), and the antenna (124) is connected to two sides of the interdigital transducer (122); different structures of the encoding reflecting grating (123) in the surface acoustic wave radio frequency tag correspond to different codes, and each surface acoustic wave radio frequency tag has different codes.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202020359776.3U CN211149487U (en) | 2020-03-20 | 2020-03-20 | Glass curtain wall structural adhesive in-service detection assembly based on radio frequency tag |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202020359776.3U CN211149487U (en) | 2020-03-20 | 2020-03-20 | Glass curtain wall structural adhesive in-service detection assembly based on radio frequency tag |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113279506A (en) * | 2021-04-15 | 2021-08-20 | 四川嘉寓门窗幕墙有限公司 | Sealing strip, point-type glass curtain wall structure and point-type glass curtain wall |
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2020
- 2020-03-20 CN CN202020359776.3U patent/CN211149487U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113279506A (en) * | 2021-04-15 | 2021-08-20 | 四川嘉寓门窗幕墙有限公司 | Sealing strip, point-type glass curtain wall structure and point-type glass curtain wall |
| CN113279506B (en) * | 2021-04-15 | 2022-08-12 | 成都事久环保科技有限公司 | Sealing strip, point-type glass curtain wall structure and point-type glass curtain wall |
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