CN110865097A - Sensor for monitoring surface layer falling and application method thereof - Google Patents
Sensor for monitoring surface layer falling and application method thereof Download PDFInfo
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- CN110865097A CN110865097A CN201911009337.8A CN201911009337A CN110865097A CN 110865097 A CN110865097 A CN 110865097A CN 201911009337 A CN201911009337 A CN 201911009337A CN 110865097 A CN110865097 A CN 110865097A
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- hollow sleeve
- sensor
- disc
- outer sealing
- monitoring
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/02—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance
- G01N27/04—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance
- G01N27/041—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance of a solid body
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/41—Refractivity; Phase-affecting properties, e.g. optical path length
Abstract
The invention provides a sensor for monitoring surface layer falling and an application method thereof, wherein a small hole is penetrated in a region to be detected, an inner side disc is fixed on a hollow sleeve by a fixing nut after the hollow sleeve of the sensor is penetrated into the small hole, the sensor is embedded in a position to be detected by means of clamping two sides of a surface to be detected by an outer sealing disc and the inner side disc, the outer sealing disc and the inner side disc can be arranged to be thin, and the outer sealing disc and the inner side disc can be completely covered in the surface layer to be detected by means of brushing and the like. The total thickness of the structure of the region to be detected can be accurately monitored by means of resistance wires or grating fibers embedded in the hollow sleeve, and the like, so that whether the surface layer of the structure falls off or not can be known.
Description
Technical Field
The invention relates to a sensor for monitoring surface layer falling and an application method thereof.
Background
For the conditions that a large number of plastering surface layers existing in the existing buildings fall off and the like, particularly under the high-altitude environment, the plastering, face bricks, heat-insulating materials and the like lose effectiveness due to bonding or anchor bolts under the action of long-term load, so that the large-area falling of the plastering, face bricks, heat-insulating materials and the like is caused, and the life and property safety of people is endangered.
The existing monitoring means are difficult to achieve the purposes of reflecting the bonding failure, hollowing, peeling and the like between the surface layer and the substrate rapidly, effectively and cheaply. The traditional nondestructive means are difficult to effectively monitor the surface layer peeling.
Since big data arose, means such as crack recognition through images appear, but the unmanned aerial vehicle needs to be frequently moved to shoot, or equipment such as synthetic aperture radar or automatic total station needs to be used for regular measurement, but the requirement on measurement space is high, the conditions such as open space, radar waves or light rays are not shielded, and the like are required, the space use of one side of the surface layer can be influenced during measurement, the real time continuous monitoring is not realized, and the short-interval pseudo-continuous detection is realized.
Aiming at the problem of monitoring the failure and peeling of the multi-layer bonding material of the building component, a proper monitoring means is lacked for the conditions of bonding failure, interlayer peeling and the like which are possibly generated under the long-term load action of the bonding building materials such as a building mortar external heat-insulating layer, a facing brick, suspended ceiling plastering and the like in the industry and the market. Besides the monitoring precision, economy and durability, the monitoring method needs to consider the aesthetic property of certain special buildings, such as historical cultural buildings, and the ineffectiveness and the compatibility with human activities of intensive people flow buildings. The existing monitoring means are difficult to meet the above requirements.
Disclosure of Invention
The invention aims to provide a sensor for monitoring surface layer falling and an application method thereof.
In order to solve the above problems, the present invention provides a sensor for monitoring the shedding of a surface layer, comprising:
the outer side wall of one end of the hollow sleeve is provided with an external thread;
the outer sealing disc is vertically connected with the other end of the hollow sleeve into a whole;
the inner side disc is provided with a through hole for one end of the hollow sleeve provided with the external thread to pass through;
the fixing nut is provided with an internal thread matched with the external thread;
the resistance wire or the grating optical fiber penetrates through the hollow sleeve, one end of the resistance wire or the grating optical fiber is fixed at one end of the hollow sleeve provided with the external thread, and the other end of the resistance wire or the grating optical fiber is fixed on the outer sealing disc;
the data collector is connected with the resistance wire, and the optical signal analyzer is connected with the grating optical fiber.
Further, in the sensor, the thickness of the outer sealing disk or the inner side disk is 1mm, and the diameter of the outer sealing disk or the inner side disk is 20 mm.
Further, in the sensor, an outer diameter of the hollow sleeve is 2 mm.
Further, in the sensor, the grating fiber is an FBG bragg grating.
Further, in the sensor, the length of the external thread on the outer side wall close to one end of the hollow sleeve is at least half of the length of the hollow sleeve.
Further, in the sensor, the hollow sleeve is made of a non-conductor material.
Further, in the sensor, the hollow sleeve is made of a resin material or a rubber material.
According to another aspect of the present invention, there is also provided a method for using the sensor for monitoring the detachment of the surface layer, the method including:
a small hole is arranged on the structure of the part to be monitored;
penetrating a hollow sleeve of the sensor into the small hole on the surface of the side with the stricter treatment requirement of the structure of the part to be monitored, and pressing the outer sealing disc on the surface of the side with the stricter treatment requirement;
and after an inner side disc is sleeved on one end of the hollow sleeve penetrating out of the surface of the other side of the structure of the part to be monitored, a fixing nut is screwed on the hollow sleeve outside the inner side disc so as to press the inner side disc on the surface of the other side of the structure of the part to be monitored.
Further, in the above application method, after screwing the fixing nut on the hollow sleeve outside the inner disk, the method further includes:
and injecting sealant into the gaps at the two ends of the small hole.
Further, in the above application method, after pressing the outer seal disk against the surface on the side where the processing requirement is stricter, the method further includes:
covering the surface of the outer sealing disc with the same material as the surface of the stricter treatment requirement side;
after pressing the inner disc on the surface of the other side of the structure of the part to be monitored, the method further comprises the following steps:
the surface of the inner disk is covered with the same material as the surface of the other side.
Compared with the prior art, the invention has the advantages that the small hole is penetrated in the area to be measured, the hollow sleeve of the sensor is penetrated into the small hole, the inner side disc is fixed on the hollow sleeve by the fixing nut, the sensor is embedded at the position to be measured by means of clamping the two sides of the surface to be measured by the outer sealing disc and the inner side disc, the outer sealing disc and the inner side disc can be arranged to be thinner, and the outer sealing disc and the inner side disc can be completely covered in the surface layer to be measured by means of painting and the like. The total thickness of the structure of the region to be detected can be accurately monitored by means of resistance wires or grating fibers embedded in the hollow sleeve, and the like, so that whether the surface layer of the structure falls off or not can be known.
Drawings
Fig. 1 is a structural diagram of a sensor for monitoring the detachment of a surface layer according to an embodiment of the present invention.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.
As shown in fig. 1, the present invention provides a sensor for monitoring the detachment of a surface layer, comprising:
the outer side wall of one end of the hollow sleeve 2, which is close to the hollow sleeve 2, is provided with an external thread;
the outer sealing disc 1 is vertically connected with the other end of the hollow sleeve 2 into a whole;
the inner side disc 3 is provided with a through hole for one end of the hollow sleeve 1 provided with the external thread to pass through;
the fixing nut 6 is provided with an internal thread matched with the external thread;
the resistance wire or the grating optical fiber 4 penetrates through the hollow sleeve 2, one end 42 of the resistance wire or the grating optical fiber 4 is fixed at one end of the hollow sleeve 2 provided with external threads, and the other end 41 of the resistance wire or the grating optical fiber 4 is fixed on the outer sealing disc 1;
the data collector is connected with the resistance wire 4, and the optical signal analyzer is connected with the grating optical fiber 4.
The invention can penetrate a small hole in the area to be measured, the hollow sleeve of the sensor is penetrated into the small hole, the inner side disc is fixed on the hollow sleeve by the fixing nut, the sensor is embedded at the position to be measured by means of clamping two sides of the surface to be measured by the outer sealing disc and the inner side disc, the outer sealing disc and the inner side disc can be arranged to be thin, and the outer sealing disc and the inner side disc can be completely covered in the surface layer to be measured by means of whitewashing and the like. The total thickness of the structure of the region to be detected can be accurately monitored by means of resistance wires or grating fibers embedded in the hollow sleeve, and the like, so that whether the surface layer of the structure falls off or not can be known.
When the interlayer peeling of the existing structure occurs, the surface spacing between the two sides of the structure is inevitably increased. Because the outer sealing discs and the inner discs on the two sides of the hollow sleeve clamp the structural body tightly, and the elastic modulus of the hollow sleeve is relatively small, when the discs on the two sides displace, the two ends of the fixed resistance wire or the fixed grating optical fiber inevitably increase along with the distance between the discs. When the resistance wire is stretched in tension, the resistance of the resistance wire is increased; the refractive index of the grating optical fiber can be changed by stretching the grating optical fiber, and the change of the thickness of the structural body can be conveniently measured according to the variation of the wavelength of the reflected light reflected by the grating, so that the existence of interlayer peeling of the structure to be measured is monitored 5.
The sensor for monitoring the surface layer falling of the invention is used as a long-term continuous monitoring means for the conditions of outer wall plastering peeling, suspended ceiling plastering falling and the like. The invention can be suitable for existing structure monitoring, including wall plastering and ceiling plastering.
In an embodiment of the sensor for monitoring the peeling-off of the surface layer, the thickness of the outer sealing disc 1 or the inner disc 3 is 1 mm.
The sensor of the invention can be made very small in size, can not damage the surface impression of the original structure, does not need large space, and is suitable for multi-point continuous monitoring.
In an embodiment of the sensor for detecting the peeling-off of the facing layer according to the present invention, the diameter of the outer sealing disc 1 or the inner disc 3 is 20 mm.
The sensor of the invention can be very small in size, does not damage the surface impression of the original structure, does not need large space, and is suitable for multi-point continuous monitoring
In an embodiment of the sensor for monitoring the detachment of the surface layer, the outer diameter of the hollow sleeve 2 is 2 mm.
The sensor of the invention can be made very small in size, can not damage the surface impression of the original structure, does not need large space, and is suitable for multi-point continuous monitoring.
In an embodiment of the sensor for monitoring the surface layer falling off according to the present invention, the grating fiber is an FBG bragg grating.
In one embodiment of the sensor for monitoring the shedding of the surface layer, the length of the external thread on the outer side wall close to one end of the hollow sleeve 2 is at least half of the length of the hollow sleeve, and the matching position of the internal thread and the external thread can be adjusted according to the thickness of a structure body to be detected, so that the distance between the outer sealing disc and the inner disc at two sides of the sensor to be detected can be adjusted at will.
In an embodiment of the sensor for monitoring the surface layer falling off of the present invention, the hollow sleeve 2 is made of a non-conductor material.
The resistance wire or the grating optical fiber is wrapped by a non-conductor material, so that the interference of the external environment is prevented, the contact corrosion between the resistance wire or the grating optical fiber can be avoided, and the safety and stability of the performance of the sensor are guaranteed.
In an embodiment of the sensor for monitoring the surface layer falling off of the present invention, the hollow sleeve 2 is made of a resin material or a rubber material.
As shown in fig. 1, the present invention further provides an application method of the sensor for monitoring the detachment of the surface layer, wherein the method includes:
step S1, forming a small hole in the structure of the part to be monitored, wherein the specific diameter of the hole can be 1 mm;
step S2, on the surface of the side with stricter processing requirement of the structure of the part to be monitored, the hollow sleeve 2 of the sensor is inserted into the small hole, and the external sealing disc 1 is pressed on the surface of the side with stricter processing requirement;
step S3, after the inner disc 3 is sleeved on the end of the hollow sleeve 2 penetrating out of the surface of the other side of the structure of the part to be monitored, the fixing nut 6 is screwed on the hollow sleeve 2 outside the inner disc 3 to press the inner disc 3 on the surface of the other side of the structure of the part to be monitored.
The invention can penetrate a small hole in the area to be measured, the hollow sleeve of the sensor is penetrated into the small hole, the inner side disc is fixed on the hollow sleeve by the fixing nut, the sensor is embedded at the position to be measured by means of clamping two sides of the surface to be measured by the outer sealing disc and the inner side disc, the outer sealing disc and the inner side disc can be arranged to be thin, and the outer sealing disc and the inner side disc can be completely covered in the surface layer to be measured by means of whitewashing and the like. The total thickness of the structure of the region to be detected can be accurately monitored by means of resistance wires or grating fibers embedded in the hollow sleeve, and the like, so that whether the surface layer of the structure falls off or not can be known.
When the interlayer peeling of the existing structure occurs, the surface spacing between the two sides of the structure is inevitably increased. Because the outer sealing discs and the inner discs on the two sides of the hollow sleeve clamp the structural body tightly, and the elastic modulus of the hollow sleeve is relatively small, when the discs on the two sides displace, the two ends of the fixed resistance wire or the fixed grating optical fiber inevitably increase along with the distance between the discs. When the resistance wire is stretched in tension, the resistance of the resistance wire is increased; the refractive index of the grating optical fiber can be changed by stretching the grating optical fiber, and the change of the thickness of the structural body can be conveniently measured according to the variation of the wavelength of the reflected light reflected by the grating, so that whether interlayer peeling occurs in the structure to be measured is monitored.
In an embodiment of an application method of the sensor for monitoring the detachment of the surface layer, after the fixing nut is screwed on the hollow sleeve on the outer side of the inner disk, the method further includes:
and injecting sealant into the gaps of the openings at the two ends of the small hole to achieve the waterproof effect.
In an embodiment of the application method of the sensor for monitoring the detachment of the surface layer, after the outer sealing disc is pressed on the surface of the side with the stricter processing requirement, the method further includes:
the surface of the outer sealing disk 1 is covered with the same material as the surface of the side with the stricter processing requirement.
After pressing the inner disc on the surface of the other side of the structure of the part to be monitored, the method further comprises the following steps:
the surface of the inner disk 3 is covered with the same material as the surface of the other side.
The outer sealing disc or the inner disc on the outer side of the structure can be covered by the same material as the original surface, so that the concealing work is well done, and the appearance quality of the structural body to be measured is guaranteed.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
It will be apparent to those skilled in the art that various changes and modifications may be made in the invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (10)
1. A sensor for monitoring the shedding of a surface layer, comprising:
the outer side wall of one end of the hollow sleeve is provided with an external thread;
the outer sealing disc is vertically connected with the other end of the hollow sleeve into a whole;
the inner side disc is provided with a through hole for one end of the hollow sleeve provided with the external thread to pass through;
the fixing nut is provided with an internal thread matched with the external thread;
the resistance wire or the grating optical fiber penetrates through the hollow sleeve, one end of the resistance wire or the grating optical fiber is fixed at one end of the hollow sleeve provided with the external thread, and the other end of the resistance wire or the grating optical fiber is fixed on the outer sealing disc;
the data collector is connected with the resistance wire, and the optical signal analyzer is connected with the grating optical fiber.
2. The sensor for detecting the peeling of the face layer according to claim 1, wherein the thickness of the outer sealing disk or the inner disk is 1mm, and the diameter of the outer sealing disk or the inner disk is 20 mm.
3. The sensor for monitoring the detachment of a facing layer of claim 1, wherein the hollow sleeve has an outer diameter of 2 mm.
4. The sensor for monitoring face shedding according to claim 1, wherein the grating fiber is a FBG bragg grating.
5. The sensor for monitoring the sloughing of the face layer of claim 1 wherein the external threads have a length on the exterior sidewall proximate to one end of the hollow sleeve that is at least one-half of the length of the hollow sleeve.
6. The sensor of claim 1, wherein the hollow sleeve is made of a non-conductive material.
7. The sensor for detecting the peeling of the facing layer according to claim 6, wherein the hollow sleeve is made of a resin material or a rubber material.
8. Use of a sensor for monitoring the detachment of a facing according to any one of claims 1 to 7, characterized in that it comprises:
a small hole is arranged on the structure of the part to be monitored;
penetrating a hollow sleeve of the sensor into the small hole on the surface of the side with the stricter treatment requirement of the structure of the part to be monitored, and pressing the outer sealing disc on the surface of the side with the stricter treatment requirement;
and after an inner side disc is sleeved on one end of the hollow sleeve penetrating out of the surface of the other side of the structure of the part to be monitored, a fixing nut is screwed on the hollow sleeve outside the inner side disc so as to press the inner side disc on the surface of the other side of the structure of the part to be monitored.
9. The method of claim 8, wherein after the fixing nut is screwed on the hollow sleeve on the outer side of the inner disk, the method further comprises:
and injecting sealant into the gaps at the two ends of the small hole.
10. The method of claim 8, wherein pressing the outer sealing disk against the surface on the more critical side of the process further comprises:
covering the surface of the outer sealing disc with the same material as the surface of the stricter treatment requirement side;
after pressing the inner disc on the surface of the other side of the structure of the part to be monitored, the method further comprises the following steps:
the surface of the inner disk is covered with the same material as the surface of the other side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911009337.8A CN110865097A (en) | 2019-10-23 | 2019-10-23 | Sensor for monitoring surface layer falling and application method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911009337.8A CN110865097A (en) | 2019-10-23 | 2019-10-23 | Sensor for monitoring surface layer falling and application method thereof |
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| CN110865097A true CN110865097A (en) | 2020-03-06 |
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| CN201911009337.8A Pending CN110865097A (en) | 2019-10-23 | 2019-10-23 | Sensor for monitoring surface layer falling and application method thereof |
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