CN117791127A - Structure-antenna conformal metal tower system and measuring method - Google Patents
Structure-antenna conformal metal tower system and measuring method Download PDFInfo
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- CN117791127A CN117791127A CN202311733333.0A CN202311733333A CN117791127A CN 117791127 A CN117791127 A CN 117791127A CN 202311733333 A CN202311733333 A CN 202311733333A CN 117791127 A CN117791127 A CN 117791127A
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- 238000012544 monitoring process Methods 0.000 claims abstract description 14
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- 230000003068 static effect Effects 0.000 claims description 35
- 238000013507 mapping Methods 0.000 claims description 13
- 238000001228 spectrum Methods 0.000 claims description 8
- 230000004044 response Effects 0.000 claims description 7
- 238000005316 response function Methods 0.000 claims description 7
- 230000005855 radiation Effects 0.000 claims description 6
- 238000012360 testing method Methods 0.000 claims description 5
- 238000005452 bending Methods 0.000 claims description 4
- 238000010008 shearing Methods 0.000 claims description 4
- 238000012937 correction Methods 0.000 claims description 3
- 238000013461 design Methods 0.000 abstract description 9
- 230000036541 health Effects 0.000 abstract description 4
- 238000005259 measurement Methods 0.000 abstract description 2
- 238000000691 measurement method Methods 0.000 abstract description 2
- 230000006870 function Effects 0.000 description 9
- 238000005516 engineering process Methods 0.000 description 6
- 230000007613 environmental effect Effects 0.000 description 5
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- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
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- 238000013016 damping Methods 0.000 description 1
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Abstract
The invention belongs to the technical field of metal tower measurement, and particularly relates to a structure-antenna conformal metal tower system and a measurement method, wherein the system comprises a metal tower-antenna conformal metal tower body, a multi-frequency band electromagnetic signal receiving and transmitting system, an upper computer and a power supply; the multi-band electromagnetic signal receiving and transmitting system comprises an integral structure conformal antenna, a local structure conformal antenna and a multi-band antenna signal reader, wherein the radio frequency reader is arranged in one-to-many mode with the integral structure conformal antenna and the local structure conformal antenna, and the multi-band electromagnetic signal receiving and transmitting system transmits the received state information of the metal tower body to the upper computer for processing. The method solves the problems of arrangement and monitoring of the auxiliary structure health monitoring system brought by the existing structure-antenna parting design, and fills the blank of the conformal design of the existing tower structure-antenna sensing system.
Description
Technical Field
The invention belongs to the technical field of metal tower measurement, and particularly relates to a structure-antenna conformal metal tower system and a measurement method.
Background
The metal tower structure is widely applied to the engineering fields of antenna communication, ultra-high voltage transmission and the like, and bears different types of environmental loads in the service process, such as: the accidents such as static collapse and fatigue damage are easy to occur in earthquake, wind/rain/snow, environmental temperature load and the like.
At present, in the field of health status monitoring of a metal tower structure, due to the fact that the structure of the tower crane is complex, maintenance cost is high, manual overhaul or arrangement of outer tower sensing technology and equipment is relied on, a large amount of manpower and material resources are needed for carrying out safety inspection on the tower crane regularly in the actual use process, and general personnel do not have the related technical knowledge of the safety inspection of the tower crane, so that inconvenience is brought to the safety inspection of the tower crane, and inspection of the sound state of the steel structure of the tower body is necessary. The manual monitoring of the metal tower not only causes extra maintenance monitoring cost, but also easily causes the problem of error leakage detection, and the integration of the existing tower structure design and the multi-band communication antenna technology is needed, so that the integrated conformal design is carried out on the traditional tower topological structure and the multi-band antenna, and the health state monitoring and management of the tower structure are realized.
Disclosure of Invention
The invention aims to provide a structure-antenna conformal metal tower system and a measuring method for solving the problems of arrangement and monitoring of an auxiliary structure health monitoring system caused by the parting design of an existing structure-antenna, and filling the blank of the conformal design of the existing tower structure-antenna sensing system.
The technical scheme of the invention is as follows:
the structure-antenna conformal metal tower system comprises a metal tower body, a multi-band electromagnetic signal receiving and transmitting system, an upper computer and a power supply, wherein the metal tower body is a metal tower-antenna conformal body; the multi-band electromagnetic signal receiving and transmitting system comprises an integral structure conformal antenna, a local structure conformal antenna and a multi-band antenna signal reader-writer, wherein the radio frequency reader-writer is arranged in a one-to-many mode with the integral structure conformal antenna and the local structure conformal antenna, and the multi-band electromagnetic signal receiving and transmitting system transmits the received state information of the metal tower body to the upper computer for processing.
Specifically, the integral structure conformal antenna is arranged in a conformal manner with the metal tower body, and the corresponding conformal antenna is installed at the sensitive characteristic position of the metal tower body according to the static/dynamic characteristics of the conformal sensor tower so as to monitor the static/dynamic characteristics of the integral structure of the metal tower.
Specifically, the local structure conformal antenna is conformal with the local structure of the metal tower body, and the corresponding conformal antenna is selected to be installed at the sensitive characteristic position of the metal tower body according to the static/dynamic characteristics of the conformal sensor tower so as to monitor the static/dynamic characteristics of the local structure of the metal tower.
Specifically, in the step S1, the sensitive characteristic position of the metal tower body includes a reinforced truss structure connected by bolts.
In particular, the static/dynamic characteristics of the metal tower include bending, shearing and torsional static/dynamic behavior.
A method of measuring a structure-antenna conformal metal tower system, comprising the steps of:
s1, transmitting data to a radio frequency reader-writer by using a conformal antenna with an integral structure and a conformal antenna with a local structure, and transmitting information to an upper computer by the radio frequency reader-writer;
s2, selecting the front 6-order vibration mode shape of the metal tower structure according to the static/dynamic characteristics of the metal tower transmitted by the conformal antenna, and determining the power spectrum characteristics of different input loads;
s3, obtaining a frequency response function of the metal tower structure, and constructing a reduced model based on the front 6-order vibration mode shape of the metal tower structure so as to construct a corresponding multiple-input multiple-output response function, namely a theoretical mapping function;
s4, testing calibration corrects the theoretical mapping function obtained in the step to obtain a mapping function which is actually applied;
s5, obtaining the resonance frequency drift quantity delta omega of the ith-order antenna i Amplitude and phase of vibration mode corresponding to the order; combining resonance characteristics and polar radiation characteristics of other order antennas to obtain amplitude values and phase differences of mode shapes of all order antennas of the tower, and determining static/dynamic deformation characteristics of a tower structure where the conformal antenna is located;
s6, comprehensively analyzing the resonance frequency and the polar radiation characteristic of the whole/local conformal antenna structure by the upper computer to reflect the static/dynamic characteristic of the metal tower and evaluate the static amplitude and dynamic spectrum characteristic.
Specifically, the power spectrum characteristics of the different input loads in the step S1 include typical seismic, wind, rain, snow and load dynamics.
Specifically, the theoretical mapping function obtained by the test calibration correction in the step S4 is specifically that the characteristic response of the conformal sensor tower under the action of different loads is obtained by the resonance frequency and the response relative amplitude/phase characteristics of the multi-scale antennas in different positions and spaces.
Specifically, the i-th order antenna is formed by sequentially sorting from low to high the 1-th order antenna, the 2-th order antenna and the 6-th order antenna through frequency analysis of information transmitted by conformal antennas installed at different positions.
The beneficial effects of the invention are as follows: by integrating the existing tower structure design and the multiband communication technology and combining the static/dynamic characteristics of the structure, the integrated conformal design is carried out on the traditional tower topological structure and the multiband antenna, the static/dynamic service characteristics of the tower structure are analyzed and evaluated by monitoring the resonance frequency characteristics of the multiband conformal antenna, the mechanical service characteristics of the tower structure are monitored in a high-fidelity mode, and the system can be used as an open system to be compatible with other types of environmental physical quantity sensors, so that the health state monitoring and management of the tower structure are realized, and the blank of the existing tower structure-antenna sensing system is filled.
Drawings
FIG. 1 is a schematic structural view of a structure-antenna conformal metal tower of the present invention.
Detailed Description
The technical scheme of the invention is described in detail below with reference to the accompanying drawings and the specific embodiments.
Example 1
Fig. 1 is a schematic structural diagram of a conformal metal tower of a structure-antenna according to the present embodiment.
The conformal antenna is an array antenna attached to the surface of a carrier and attached to the carrier, namely the array antenna needs to be conformally installed on a surface with a fixed shape, so that a non-planar conformal antenna array is formed. The conformal antenna of the metal tower is used as a high-rise structure, and the mechanical characteristic monitoring quantity of the conformal antenna is static/dynamic behaviors such as bending, shearing, torsion and the like, and other environmental variables (such as temperature, humidity, salinity and the like) are monitored by combining other sensing technologies.
The structure-antenna conformal metal tower system provided by the embodiment comprises a metal tower body, a multi-band electromagnetic signal receiving and transmitting system, an upper computer and a power supply, wherein the metal tower body is a metal tower-antenna conformal body; the multi-band electromagnetic signal receiving and transmitting system comprises an integral structure conformal antenna, a local structure conformal antenna and a multi-band antenna signal reader-writer, wherein the radio frequency reader-writer is arranged in a one-to-many mode with the integral structure conformal antenna and the local structure conformal antenna, and the multi-band electromagnetic signal receiving and transmitting system transmits the received state information of the metal tower body to the upper computer for processing. The multi-band electromagnetic signal receiving and transmitting system is an open modularized system, and corresponding sub-antennas can be adjusted to increase/decrease according to later requirements, so that a conformal system is perfected, for example, a super-structure/material technology and a corresponding environment variable sensing technology are combined. The upper computer comprises a memory and a processor, wherein the memory is used for storing a computer program, and the processor is used for executing the computer program.
The conformal antennas of the integral structure are arranged in a conformal manner with the metal tower body, and corresponding conformal antennas are installed at sensitive characteristic positions of the metal tower body according to static/dynamic characteristics of the conformal sensor tower so as to monitor the static/dynamic characteristics of the integral structure of the metal tower. The local structure conformal antenna is conformal with the local structure of the metal tower body, and the corresponding conformal antenna is installed at the sensitive characteristic position of the metal tower body according to the static/dynamic characteristics of the conformal sensor tower so as to monitor the static/dynamic characteristics of the local structure of the metal tower. The sensitive feature locations of the metal tower body include bolted stiffening truss structures. The static/dynamic characteristics of the metal tower include bending, shearing and torsion static/dynamic behavior. The static/dynamic response of the metal tower is manifested not only as a change in the resonant frequency of the whole/part antenna, but also as a change in the amplitude/phase of the deformation of the antenna at different spatial locations.
Example 2
The embodiment provides a measuring method of a structure-antenna conformal metal tower system, which comprises the following steps:
s1, transmitting data to a radio frequency reader-writer by using a conformal antenna with an integral structure and a conformal antenna with a local structure, and transmitting information to an upper computer by the radio frequency reader-writer;
s2, selecting the front 6-order vibration mode shape of a metal tower structure according to the static/dynamic characteristics of the metal tower transmitted by the conformal antenna, and determining the power spectrum characteristics (including the dynamic characteristics of typical earthquake, wind, rain, snow and load) of different input loads;
s3, obtaining a frequency response function of the metal tower structure, and constructing a reduced model based on the front 6-order vibration mode shape of the metal tower structure so as to construct a corresponding multiple-input multiple-output response function, namely a theoretical mapping function;
s4, testing calibration corrects the theoretical mapping function obtained in the step to obtain a mapping function which is actually applied;
s5, obtaining the resonance frequency drift quantity delta omega of the ith-order antenna i Amplitude and phase of vibration mode corresponding to the order; combining resonance characteristics and polar radiation characteristics of other order antennas to obtain amplitude values and phase differences of mode shapes of all order antennas of the tower, and determining static/dynamic deformation characteristics of a tower structure where the conformal antenna is located;
s6, comprehensively analyzing the resonance frequency and the polar radiation characteristic of the whole/local conformal antenna structure by the upper computer to reflect the static/dynamic characteristic of the metal tower and evaluate the static amplitude and dynamic spectrum characteristic.
According to the regional environment of the tower, a corresponding sensor is additionally arranged to monitor environmental variables.
The theoretical mapping function obtained by test calibration correction in the step S4 is specifically that the characteristic response of the conformal sensor tower under the action of different loads is obtained by the resonance frequency and the response relative amplitude/phase characteristics of the antennas with different positions and spaces. The local conformal antenna can be used to monitor tower local modal information and to modify the frequency response function of the overall tower in view of the stiffness/damping characteristics of the local connection structure and ultimately to modify the actual mapping function of the overall tower structure.
The i-th order antenna is formed by sequentially sorting the information transmitted by the conformal antennas installed at different positions from low to high into a 1-th order antenna, a 2-th order antenna and a 6-th order antenna. The information that each level of antenna can transmit includes the position and characteristic information of the monitoring point, such as: cold and hot state design and historical mechanics/environment variable information.
Finally, it should be noted that the above-mentioned embodiments are only for illustrating the technical scheme of the present invention and are not limiting; while the invention has been described in detail with reference to the preferred embodiments, those skilled in the art will appreciate that: modifications may be made to the specific embodiments of the present invention or equivalents may be substituted for part of the technical features thereof; without departing from the spirit of the invention, it is intended to cover the scope of the invention as claimed.
Claims (9)
1. The structure-antenna conformal metal tower system comprises a metal tower body, wherein the metal tower body is a metal tower-antenna conformal body, and is characterized by further comprising a multi-band electromagnetic signal receiving and transmitting system, an upper computer and a power supply, wherein the multi-band electromagnetic signal receiving and transmitting system is used for receiving the state characteristics of the metal tower body;
the multi-band electromagnetic signal receiving and transmitting system comprises an integral structure conformal antenna, a local structure conformal antenna and a multi-band antenna signal reader-writer, wherein the radio frequency reader-writer is arranged in one-to-many mode with the integral structure conformal antenna and the local structure conformal antenna;
the multi-band electromagnetic signal receiving and transmitting system transmits the received state information of the metal tower body to the upper computer for processing.
2. The structure-antenna conformal metal tower system according to claim 1, wherein the integral structure conformal antenna is configured conformal to the metal tower body, and the corresponding conformal antenna is selected to be mounted at a sensitive feature position of the metal tower body for monitoring the static/dynamic characteristics of the integral structure of the metal tower according to the static/dynamic characteristics of the conformal sensor tower.
3. The structure-antenna conformal metal tower system according to claim 1, wherein the local structure conformal antenna is conformal with the local structure of the metal tower body, and the corresponding conformal antenna is selected to be installed at the sensitive characteristic position of the metal tower body for monitoring the static/dynamic characteristics of the local structure of the metal tower according to the static/dynamic characteristics of the conformal sensor tower.
4. A structure-antenna conformal metal tower system according to claim 2 or 3, wherein said metal tower body sensitive feature locations in step S1 comprise bolted stiffening truss structures.
5. A structure-antenna conformal metal tower system according to claim 2 or 3, wherein said metal tower static/dynamic characteristics comprise bending, shearing and torsion static/dynamic behavior.
6. A method of measuring a structure-antenna conformal metal tower system, comprising the steps of:
s1, transmitting data to a radio frequency reader-writer by using a conformal antenna with an integral structure and a conformal antenna with a local structure, and transmitting information to an upper computer by the radio frequency reader-writer;
s2, selecting the front 6-order vibration mode shape of the metal tower structure according to the static/dynamic characteristics of the metal tower transmitted by the conformal antenna, and determining the power spectrum characteristics of different input loads;
s3, obtaining a frequency response function of the metal tower structure, and constructing a reduced model based on the front 6-order vibration mode shape of the metal tower structure so as to construct a corresponding multiple-input multiple-output response function, namely a theoretical mapping function;
s4, testing calibration corrects the theoretical mapping function obtained in the step to obtain a mapping function which is actually applied;
s5, obtaining the resonance frequency drift quantity delta omega of the ith-order antenna i Amplitude and phase of vibration mode corresponding to the order; combining resonance characteristics and polar radiation characteristics of other order antennas to obtain amplitude values and phase differences of mode shapes of all order antennas of the tower, and determining static/dynamic deformation characteristics of a tower structure where the conformal antenna is located;
s6, comprehensively analyzing the resonance frequency and the polar radiation characteristic of the whole/local conformal antenna structure by the upper computer to reflect the static/dynamic characteristic of the metal tower and evaluate the static amplitude and dynamic spectrum characteristic.
7. The structure-antenna conformal metal tower system of claim 6, wherein the power spectrum characteristics of the different input loads in step S2 include typical seismic, wind, rain, snow, load dynamics.
8. The structure-antenna conformal metal tower system of claim 6, wherein the theoretical mapping function obtained by the calibration correction in step S4 is specifically obtained by resonance frequencies and response relative amplitude/phase characteristics of different position and space multiscale antennas, so as to obtain characteristic responses of the conformal sensor tower under different loads.
9. The structure-antenna conformal metal tower system of claim 6, wherein the i-th order antenna is ordered from low to high by frequency analysis of information transmitted by conformal antennas mounted at different locations, sequentially 1-th order antenna, 2-th order antenna, and 6-th order antenna.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202311733333.0A CN117791127A (en) | 2023-12-15 | 2023-12-15 | Structure-antenna conformal metal tower system and measuring method |
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| CN202311733333.0A CN117791127A (en) | 2023-12-15 | 2023-12-15 | Structure-antenna conformal metal tower system and measuring method |
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| CN202311733333.0A Pending CN117791127A (en) | 2023-12-15 | 2023-12-15 | Structure-antenna conformal metal tower system and measuring method |
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