CN109348444B - Concrete built-in wireless beacon quality monitoring system - Google Patents
Concrete built-in wireless beacon quality monitoring system Download PDFInfo
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- CN109348444B CN109348444B CN201811080792.2A CN201811080792A CN109348444B CN 109348444 B CN109348444 B CN 109348444B CN 201811080792 A CN201811080792 A CN 201811080792A CN 109348444 B CN109348444 B CN 109348444B
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- 238000012544 monitoring process Methods 0.000 title claims abstract description 76
- 238000000034 method Methods 0.000 claims abstract description 14
- 238000001228 spectrum Methods 0.000 claims description 66
- 230000007480 spreading Effects 0.000 claims description 7
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- 238000006243 chemical reaction Methods 0.000 claims description 3
- 238000013461 design Methods 0.000 claims description 3
- 230000001360 synchronised effect Effects 0.000 claims description 3
- 230000007547 defect Effects 0.000 abstract description 3
- 230000008901 benefit Effects 0.000 abstract description 2
- 238000009434 installation Methods 0.000 abstract description 2
- 230000008859 change Effects 0.000 description 2
- 230000001427 coherent effect Effects 0.000 description 2
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- 238000005259 measurement Methods 0.000 description 2
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/30—Services specially adapted for particular environments, situations or purposes
- H04W4/38—Services specially adapted for particular environments, situations or purposes for collecting sensor information
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/38—Concrete; Lime; Mortar; Gypsum; Bricks; Ceramics; Glass
- G01N33/383—Concrete or cement
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/69—Spread spectrum techniques
- H04B1/707—Spread spectrum techniques using direct sequence modulation
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J13/00—Code division multiplex systems
- H04J13/0007—Code type
- H04J13/0022—PN, e.g. Kronecker
- H04J13/0025—M-sequences
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q2209/00—Arrangements in telecontrol or telemetry systems
- H04Q2209/40—Arrangements in telecontrol or telemetry systems using a wireless architecture
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Abstract
The invention relates to the field of buildings, and discloses a concrete built-in wireless beacon quality monitoring system which comprises an annunciator (1), a remote measuring receiver (2) and a monitoring groove (3) arranged in concrete, wherein a sliding mounting support (4) is arranged in the monitoring groove (3), the sliding mounting support (4) comprises a monitoring track (41) and a monitoring sliding plate (42), the annunciator (1) is arranged on the monitoring sliding plate (42), and a signal receiving device (5), a controller (6) and a motor (7) which is connected with a small wheel (43) and controls the small wheel (43) to rotate are arranged on the monitoring sliding plate (42). The invention is matched with the sliding installation support to conveniently adjust the position of the beacon machine, and the provided method for counteracting the multiple access interference in the large building deformation remote measuring technology overcomes the defects in the prior art, improves the measuring precision of the deformation monitoring system, and has more outstanding advantages when the number of beacon machines is more.
Description
Technical Field
The invention relates to the field of buildings, in particular to a concrete built-in wireless beacon quality monitoring system.
Background
In nature, the shape, size and position of a building can change in a time domain space under the action of various influencing factors, such as swinging of a high-rise building, deformation of a dam and the like. When the deformation amount exceeds the allowable range which can be borne by the deformation body, serious disasters can be brought to the production and life of human beings, so that the deformation monitoring of the object is of great significance.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides a concrete built-in wireless beacon quality monitoring system.
In order to solve the technical problem, the invention is solved by the following technical scheme:
the built-in wireless beacon quality monitoring system for the concrete comprises an annunciator, a remote measuring receiver connected with the annunciator, and a monitoring groove arranged in the concrete, wherein a sliding mounting support is arranged in the monitoring groove, the sliding mounting support comprises a monitoring track and a monitoring sliding plate arranged on the monitoring track, the monitoring track is fixed in the monitoring groove, a small wheel matched with the monitoring track is arranged below the monitoring sliding plate, the annunciator is arranged on the monitoring sliding plate, a signal receiving device, a controller and a motor which is connected with the small wheel and controls the small wheel to rotate are arranged on the monitoring sliding plate, the signal receiving device receives an externally-sent control signal and sends the control signal to the controller, the controller analyzes the control signal and controls the work of the motor, the monitoring track is a long plate track which is vertically arranged, and a plurality of positioning holes which are vertical to the track are arranged on the monitoring track, the small wheel comprises a first wheel body, a second wheel body and a shaft sleeve, the first wheel body and the second wheel body are coaxially arranged, one side of the shaft sleeve is fixedly connected with the first wheel body, the other side of the shaft sleeve is fixedly connected with the second wheel body, an annular groove is formed between the first wheel body and the second wheel body, the annular groove is inserted into the monitoring track and matched with the monitoring track, a telescopic column is arranged on the first wheel body, the telescopic column extends outwards towards the second wheel body, small holes matched with the telescopic column are formed in the second wheel body, the telescopic column and the small holes are circumferentially distributed, and the telescopic column sequentially penetrates through the positioning holes and the small holes and locks the small wheel on the monitoring track; the signal machine has a plurality of signal machines, the signal machine end adopts the combination of the difference between two original spread spectrum codes with difference of integral chip width as the combined spread spectrum code of the signal machine, one original spread spectrum code of each signal machine and two original spread spectrum codes of another signal machine respectively carry out cross correlation, the two cross correlation values are equal, thus the cross correlation value of one original spread spectrum code of each signal machine and the combined spread spectrum code of another signal machine is equal to 0, and the cross correlation value of the combined spread spectrum code of each signal machine and the combined spread spectrum code of another signal machine is equal to 0; each signal machine adopts a design method of a completely orthogonal combined spread spectrum code to generate a spread spectrum modulation signal; the telemetering receiver captures and tracks spread spectrum codes of synchronous signal machines, and after synchronization, related de-spreading is carried out to recover carrier signals of all signal machines and eliminate multiple access interference.
Preferably, the telescopic column is an electric telescopic column, and the controller controls the telescopic column to be telescopic according to the control signal.
Preferably, the first wheel body and the second wheel body are provided with an anti-slip gasket on one side of the monitoring track.
Preferably, the method for designing the fully orthogonal combined spreading code at the signal end specifically includes: and delaying the reference spread spectrum code to generate a plurality of original spread spectrum codes with different phases, constructing signal machine combined spread spectrum codes by using the combination of the difference between two original spread spectrum code sequences with difference of an integer chip width, wherein the cross-correlation value of any one original spread spectrum code of each signal machine is equal to that of two original spread spectrum codes with difference of an integer chip width of the other signal machine.
Preferably, the reference spreading code is an m-sequence code.
Preferably, the working process of the beacon is as follows: modulated onto an intermediate frequency carrier using a constructed orthogonal spreading code, then converted to radio frequency by an up-conversion circuit, and transmitted to a telemetry receiver via an antenna.
Preferably, the signal 1 includes a reference signal fixedly arranged in position and an observation point signal arranged on a building, and the working process of the telemetering receiver is as follows: the antenna of the telemetering receiver receives the mixed spread spectrum signal, the radio frequency signal is converted into a low-intermediate frequency signal after passing through a low-noise amplifier, a mixer and a band-pass filter, then a spread spectrum code signal of a reference signal machine is locally regenerated, the phases of two original spread spectrum code signals forming a combined spread spectrum code of the reference signal machine are adjusted, correlation operation is carried out on the intermediate frequency signal, envelope detection is carried out on the intermediate frequency signal, when the two envelopes are larger than a capture threshold, a tracking stage is carried out, a non-coherent delay locked loop is used for realizing the accurate synchronization of the spread spectrum code of the reference signal machine, the locally regenerated spread spectrum code of each signal machine and the low-intermediate frequency signal are used for carrying out correlation operation, carrier signals of each signal machine are recovered, a phase discriminator is used for comparing the phase difference between the signal machines, and then the phase difference information is.
Due to the adoption of the technical scheme, the invention has the remarkable technical effects that: the invention is matched with the sliding installation support to conveniently adjust the position of the annunciator, overcomes the defects in the prior art by the provided method for counteracting the multi-address interference in the large building deformation remote measuring technology, ensures the reliability of capturing and tracking the pseudo code by reasonably designing the spread spectrum modulation address code of the annunciator at the transmitting end and improving the related despreading circuit of the receiver at the receiving end, and completely solves the problem of the multi-address interference in the prior art, thereby improving the measurement precision of the deformation monitoring system, and the advantage is more prominent when the number of the annunciators is more.
Drawings
Fig. 1 is a schematic structural view of the present invention.
The names of the parts indicated by the numerical references in the drawings are as follows: the device comprises a signal machine 1, a remote measuring receiver 2, a monitoring groove 3, a sliding mounting support 4, a signal receiving device 5, a controller 6, a motor 7, a telescopic column 8, a small hole 9, a monitoring track 41, a monitoring sliding plate 42, a small wheel 43, a positioning hole 411, an annular groove 430, a first wheel 431, a first wheel 432, a second wheel 433 and a shaft sleeve 433.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples.
Example 1
A concrete built-in wireless beacon quality monitoring system is shown in the figure, and comprises an annunciator 1 and a remote measuring receiver 2 connected with the annunciator 1, and further comprises a monitoring groove 3 arranged in concrete, wherein a sliding mounting support 4 is arranged in the monitoring groove 3, the sliding mounting support 4 comprises a monitoring track 41 and a monitoring sliding plate 42 arranged on the monitoring track 41, the monitoring track 41 is fixed in the monitoring groove 3, a small wheel 43 matched with the monitoring track 41 is arranged below the monitoring sliding plate 42, the annunciator 1 is arranged on the monitoring sliding plate 42, a signal receiving device 5, a controller 6 and a motor 7 connected with the small wheel 43 and controlling the small wheel 43 to rotate are arranged on the monitoring sliding plate 42, the signal receiving device 5 receives an externally sent control signal and sends the control signal to the controller 6, the controller 6 analyzes the control signal and controls the motor 7 to work, the monitoring track 41 is a long plate track vertically arranged, a plurality of positioning holes 411 perpendicular to the track direction are formed in the monitoring track 41, the small wheel 43 comprises a first wheel body 431, a second wheel body 432 and a shaft sleeve 433, the first wheel body 431 and the second wheel body 432 are coaxially arranged, one side of the shaft sleeve 433 is fixedly connected with the first wheel body 431, the other side of the shaft sleeve 433 is fixedly connected with the second wheel body 432, an annular groove 430 is formed between the first wheel body 431 and the second wheel body 432, the annular groove 430 is inserted into the monitoring track 41 and matched with the monitoring track 41, a telescopic column 8 is arranged on the first wheel body 431, the telescopic column 8 extends outwards towards the second wheel body 432, small holes 9 matched with the telescopic column 8 are formed in the second wheel body 432, the telescopic column 8 and the small holes 9 are circumferentially distributed, and the telescopic column 8 sequentially penetrates through the positioning holes 411 and the small holes 9 and locks the small wheel 43 on the monitoring track 41; the signal machine 1 has a plurality of signal machines, the signal machine 1 end adopts the combination of the difference between two original spread spectrum codes with difference of integral chip width as the combined spread spectrum code of the signal machine 1, one original spread spectrum code of each signal machine 1 and two original spread spectrum codes of the other signal machine 1 are respectively cross-correlated, the two cross-correlation values are equal, thus the cross-correlation value of one original spread spectrum code of each signal machine 1 and the combined spread spectrum code of the other signal machine 1 is equal to 0, and the cross-correlation value of the combined spread spectrum code of each signal machine 1 and the combined spread spectrum code of the other signal machine 1 is equal to 0; each signal machine 1 adopts a design method of a completely orthogonal combined spread spectrum code to generate a spread spectrum modulation signal; the telemetering receiver 2 captures and tracks the spread spectrum codes of the synchronous signal machines 1, and after synchronization, related de-spreading is carried out, carrier signals of all the signal machines 1 are recovered, and multiple access interference is eliminated.
The telescopic column 8 is an electric telescopic column, and the controller 6 controls the telescopic column 8 to stretch according to the control signal.
The first wheel 431 and the second wheel 432 are provided with anti-slip washers on one side of the monitoring track 41.
When the steamboat 43 drives semaphore 1 and moves to appointed position department and monitor to through the position of flexible post 8 locking semaphore 1, then receive semaphore 1's signal through telemetering measurement receiver 2, thereby measure the building.
The method for designing the completely orthogonal combined spread spectrum code at the 1 end of the signal machine specifically comprises the following steps: the method comprises the steps of generating a plurality of original spread spectrum codes with different phases by delaying a reference spread spectrum code, constructing signal machine combined spread spectrum codes by using a combination of differences of two original spread spectrum code sequences with difference of an integer chip width, wherein any one original spread spectrum code of each signal machine 1 is equal to the cross-correlation value of two original spread spectrum codes with difference of an integer chip width of another signal machine 1.
The reference spreading code adopts m-sequence code.
The working process of the beacon 1 is as follows: modulated onto an intermediate frequency carrier using a constructed orthogonal spreading code, then converted to radio frequency by an up-conversion circuit, and transmitted to the telemetry receiver 2 via an antenna.
The signal machine 1 comprises a reference signal machine with a fixed position and an observation point signal machine arranged on a building, and the working process of the telemetering receiver 2 is as follows: the telemetering receiver 2 receives the mixed spread spectrum signal through an antenna, converts a radio frequency signal into a low-intermediate frequency signal after passing through a low-noise amplifier, a mixer and a band-pass filter, then locally regenerates a spread spectrum code signal of a reference signal machine, adjusts the phases of two original spread spectrum code signals forming a combined spread spectrum code of the reference signal machine, performs correlation operation on the intermediate frequency signal and performs envelope detection, shifts to a tracking stage when the two envelopes are both greater than a capture threshold, uses a non-coherent delay locked loop to realize accurate synchronization of the spread spectrum code of the reference signal machine, uses the locally regenerated spread spectrum code of each signal machine and the low-intermediate frequency signal to perform correlation operation, recovers carrier signals of each signal machine 1, uses a phase discriminator to compare the phase difference among the signal machines 1, and then sends the phase difference information to a deformation curve forming module to convert the phase difference information into building shape change information.
In summary, the above-mentioned embodiments are only preferred embodiments of the present invention, and all equivalent changes and modifications made in the claims of the present invention should be covered by the claims of the present invention.
Claims (6)
1. Concrete built-in wireless beacon quality monitoring system, its characterized in that: the device comprises an annunciator (1), a remote-measuring receiver (2) connected with the annunciator (1), and a monitoring groove (3) arranged in concrete, wherein a sliding mounting support (4) is arranged in the monitoring groove (3), the sliding mounting support (4) comprises a monitoring track (41) and a monitoring sliding plate (42) arranged on the monitoring track (41), the monitoring track (41) is fixed in the monitoring groove (3), a small wheel (43) matched with the monitoring track (41) is arranged below the monitoring sliding plate (42), the annunciator (1) is arranged on the monitoring sliding plate (42), a signal receiving device (5) is arranged on the monitoring sliding plate (42), a controller (6) and a motor (7) connected with the small wheel (43) and used for controlling the small wheel (43) to rotate, the signal receiving device (5) receives an externally sent control signal and sends the control signal to the controller (6), the controller (6) analyzes the control signal and controls the work of the motor (7), the monitoring track (41) is a long plate track which is vertically placed, a plurality of positioning holes (411) which are vertical to the track direction are formed in the monitoring track (41), the small wheel (43) comprises a first wheel body (431), a second wheel body (432) and a shaft sleeve (433), the first wheel body (431) and the second wheel body (432) are coaxially arranged, one side of the shaft sleeve (433) is fixedly connected with the first wheel body (431), the other side of the shaft sleeve (433) is fixedly connected with the second wheel body (432), an annular groove (430) is formed between the first wheel body (431) and the second wheel body (432), the annular groove (430) is inserted into the monitoring track (41) and matched with the monitoring track (41), a telescopic column (8) is arranged on the first wheel body (431), the telescopic column (8) extends outwards towards the second wheel body (432), and a small hole (9) matched with the telescopic column (8) is formed in the second wheel body (432), the telescopic columns (8) and the small holes (9) are distributed circumferentially, and the telescopic columns (8) sequentially penetrate through the positioning holes (411) and the small holes (9) and lock the small wheels (43) on the monitoring track (41); the signal machine (1) is provided with a plurality of signal machines, the signal machine (1) end adopts the combination of the difference between two original spread spectrum codes with the difference of integral chip width as the combined spread spectrum code of the signal machine (1), one original spread spectrum code of each signal machine (1) and two original spread spectrum codes of the other signal machine (1) are respectively cross-correlated, the two cross-correlation values are equal, thus the cross-correlation value of one original spread spectrum code of each signal machine (1) and the combined spread spectrum code of the other signal machine (1) is equal to 0, and the cross-correlation value of the combined spread spectrum code of each signal machine (1) and the combined spread spectrum code of the other signal machine (1) is equal to 0; each signal machine (1) adopts a completely orthogonal combined spread spectrum code to generate a spread spectrum modulation signal; the remote measuring receiver (2) captures and tracks the spread spectrum code of the synchronous signal machine (1), and after synchronization, related de-spreading is carried out, carrier signals of all the signal machines (1) are recovered, and multiple access interference is eliminated.
2. The system for monitoring the quality of the built-in wireless beacon of the concrete according to claim 1, characterized in that: the telescopic column (8) is an electric telescopic column, and the controller (6) controls the telescopic column (8) to stretch according to the control signal.
3. The system for monitoring the quality of the built-in wireless beacon of the concrete according to claim 1, characterized in that: the first wheel body (431) and the second wheel body (432) are provided with anti-slip gaskets on one side of the monitoring track (41).
4. The system for monitoring the quality of the built-in wireless beacon of the concrete according to claim 1, characterized in that: the design method of the completely orthogonal combined spread spectrum code at the end of the signal machine (1) specifically comprises the following steps: the method comprises the steps of generating a plurality of original spread spectrum codes with different phases by delaying a reference spread spectrum code, constructing a beacon combined spread spectrum code by using a combination of differences between two original spread spectrum code sequences with difference of an integer chip width, wherein the cross-correlation value of any one original spread spectrum code of each signal machine (1) is equal to that of two original spread spectrum codes with difference of an integer chip width of the other signal machine (1).
5. The system for monitoring the quality of the built-in wireless beacon of the concrete according to claim 4, wherein: the reference spreading code adopts m-sequence code.
6. The system for monitoring the quality of the built-in wireless beacon of the concrete according to claim 1, characterized in that: the working process of the beacon (1) is as follows: modulated onto an intermediate frequency carrier using a constructed orthogonal spreading code, then converted to radio frequency by an up-conversion circuit, and transmitted to a telemetry receiver (2) via an antenna.
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| CN201811080792.2A CN109348444B (en) | 2018-09-17 | 2018-09-17 | Concrete built-in wireless beacon quality monitoring system |
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| CN109348444B true CN109348444B (en) | 2021-05-07 |
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| CN110515074B (en) * | 2019-09-30 | 2024-02-20 | 符依苓 | Micro-deformation telemetry system and method based on wireless synchronization technology |
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2018
- 2018-09-17 CN CN201811080792.2A patent/CN109348444B/en active Active
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