CN116819529A - Stone curtain wall metal structure perspective imaging method and device based on millimeter waves - Google Patents
Stone curtain wall metal structure perspective imaging method and device based on millimeter waves Download PDFInfo
- Publication number
- CN116819529A CN116819529A CN202310863390.4A CN202310863390A CN116819529A CN 116819529 A CN116819529 A CN 116819529A CN 202310863390 A CN202310863390 A CN 202310863390A CN 116819529 A CN116819529 A CN 116819529A
- Authority
- CN
- China
- Prior art keywords
- millimeter wave
- signal
- module
- curtain wall
- imaging
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000003384 imaging method Methods 0.000 title claims abstract description 65
- 239000004575 stone Substances 0.000 title claims abstract description 40
- 239000002184 metal Substances 0.000 title claims abstract description 33
- 238000001514 detection method Methods 0.000 claims abstract description 51
- 230000033001 locomotion Effects 0.000 claims abstract description 18
- 238000000034 method Methods 0.000 claims abstract description 14
- 230000008569 process Effects 0.000 claims abstract description 12
- 239000011159 matrix material Substances 0.000 claims description 21
- 230000003044 adaptive effect Effects 0.000 claims description 11
- 238000004364 calculation method Methods 0.000 claims description 9
- 238000001914 filtration Methods 0.000 claims description 8
- 238000005070 sampling Methods 0.000 claims description 8
- 238000006243 chemical reaction Methods 0.000 claims description 6
- 230000001629 suppression Effects 0.000 claims description 6
- 230000005540 biological transmission Effects 0.000 claims description 4
- 230000001427 coherent effect Effects 0.000 claims description 3
- 230000010355 oscillation Effects 0.000 claims description 3
- 238000004806 packaging method and process Methods 0.000 claims description 3
- 230000007704 transition Effects 0.000 claims description 3
- 239000000463 material Substances 0.000 abstract description 4
- 230000000007 visual effect Effects 0.000 abstract description 3
- 230000001066 destructive effect Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 2
- 230000002238 attenuated effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 238000002592 echocardiography Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005670 electromagnetic radiation Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000007781 pre-processing Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000002310 reflectometry Methods 0.000 description 1
Abstract
The invention provides a millimeter wave-based stone curtain wall metal structure perspective imaging method, which comprises the following steps: the detection device is horizontally placed, and the antenna array is placed parallel to the ground and the measured wall surface; the detection device performs uniform motion along a direction perpendicular to the linear array antenna according to a preset detection path; the main control module controls the signal source module to generate a signal to be transmitted, and the signal is transmitted to the curtain wall through the antenna array; the millimeter wave receiving and collecting module collects the reflected millimeter wave echo signals; the signal processing module processes the acquired millimeter wave echo signals into perspective images. The invention can realize the batch visual detection of the metal structure of the large-area stone curtain wall under the condition of not damaging the existing building curtain wall; millimeter waves are adopted as detection means, so that the penetrability of stone materials can be ensured, and the detection accuracy of metal pendants can be met.
Description
Technical Field
The invention relates to the technical field of curtain wall detection, in particular to a millimeter wave-based stone curtain wall metal structure perspective imaging method and device.
Background
The decorative stone is used as one of the main application materials of the building curtain wall, and the main stress structure of stone installation is a metal keel and a specific metal pendant on the back of the stone curtain wall; the risk of curtain wall stone coming off is greater when there are two cases: few metal pendants are installed and neglected to install when the newly built curtain wall is installed; the metal structure is aged, deformed and fallen off after the existing curtain wall is installed and used for a long time; in order to prevent the falling risk of the stone material of the curtain wall, the stone curtain wall needs to be detected regularly, so that the safety condition of the curtain wall is analyzed, and the potential safety hazard is eliminated in time.
At present, an effective detection mode mainly comprises destructive sampling detection, namely, after drilling or locally breaking and disassembling an extracted detected position, a metal structure after stone is observed by using an industrial endoscope, and a detection result is obtained after comparing an observation result with a drawing sample.
The traditional detection mode can not directly observe the metal structure behind the stone, so that destructive treatment is required to be carried out on the target; because the curtain wall to be detected is destructive, the curtain wall with large area to be detected can only be subjected to spot check, and sampling has larger randomness, so that the comprehensive detection of the curtain wall with large area can not be really realized.
The efficiency of traditional detection mode is lower, and pretreatment before the detection and the restoration to the spot check position after the detection all need consume a large amount of time, and the maintenance process also can have the condition that causes new damage to the curtain that detects moreover.
Accordingly, the prior art has shortcomings and needs further improvement.
Disclosure of Invention
Aiming at the problems existing in the prior art, the invention provides a millimeter wave-based stone curtain wall metal structure perspective imaging method and device.
In order to achieve the above object, the present invention is specifically as follows:
the invention provides a millimeter wave-based stone curtain wall metal structure perspective imaging device, which is characterized by comprising: a detection device and a horizontal linear array antenna;
the detection device includes: the device comprises a battery pack, a power supply conversion module, a signal source module, a millimeter wave transmitting module, a millimeter wave receiving module, a signal processing module and a main control module;
the battery pack is used for supplying power;
the power supply conversion module is used for converting an external input power supply into a linear power supply required by the internal functional module;
the signal source module is used for generating a signal to be transmitted with preset characteristics;
the millimeter wave transmitting module is used for amplifying the signal generated by the signal source module and transmitting millimeter waves to the detected area;
the millimeter wave receiving module is used for collecting millimeter wave signals returned from the detected area and converting the millimeter wave signals into digital signals;
the signal processing module is used for extracting effective information from the digital signals output by the millimeter wave receiving module;
the main control module is used for receiving an external control instruction, controlling the signal processing module and the signal source module, packaging and transmitting signal processing result data;
the horizontal linear array antenna includes: the antenna array and the switch controller connected with the antenna array are used for transmitting and receiving millimeter wave signals;
the main control module is connected with the signal processing module and the signal source module; the signal processing module is connected with the millimeter wave receiving and collecting module, the signal source module is connected with the millimeter wave transmitting module, and the signal processing module and the signal source module are connected with the horizontal linear array antenna.
Further, the millimeter wave receiving module realizes noise suppression in the sampled signal by using multi-channel Kalman filtering in the sampled signal preprocessing, a state space model is established by a sampled multi-channel Kalman filtering algorithm to describe the relation between the signal and the noise, the state is estimated by using the Kalman filter, the input noise is suppressed by using the signals of a plurality of channels, and the noise suppression effect is effectively improved, and the method comprises a prediction stage and an updating stage, and specifically comprises the following steps:
the prediction stage calculation formula is as follows:
wherein ,
is the state prediction value at time step k, < ->Is the state estimate at time step k-1,
F k is a state transition matrix, P k|k-1 Is the state prediction error covariance matrix at time step k,is the state estimation error covariance matrix at time step k-1, Q k Is a process noise covariance matrix;
the update phase calculation formula is as follows:
P k|k ＝(I-K k H k )P k|k-1
wherein ,Kk Is the Kalman gain, y k Is the observed value, H k Is an observation matrix, R k Is the observed noise covariance matrix and,is at time step kState estimation, I is an identity matrix.
Further, the signal processing module is added with a self-adaptive filtering algorithm to reduce interference by optimizing a signal processing algorithm, so that imaging precision is effectively improved; the adaptive filtering adopts an LMS algorithm:
w(n+1)＝w(n)+2μe(n)x(n)，
where w (n) is the weight vector of the adaptive filter, x (n) is the vector of the input signal, e (n) is the error between the desired output signal and the actual output signal, μ is the step size factor of the adaptive filter, and the filter coefficients are updated once each time a new x (n) and d (n) is given;
carrying out imaging algorithm processing based on synthetic aperture on the signal after the signal pretreatment is finished, wherein the synthetic aperture imaging algorithm is mainly carried out on echo IQ fundamental frequency signals;
performing two-dimensional Fourier transform and three-dimensional Fourier inverse transform, and recovering the imaging area signal according to a holographic imaging algorithm; the mathematical expression is as follows,
wherein s (x, y, w) is zero intermediate frequency signal obtained by mixing the echo signal scattered by the millimeter wave signal through the target f (x, y, z) and the local oscillation signal after being received by the antenna array on the XY plane,spherical wave signals scattered for the target;
the basic physical meaning is that different unfocused coherent waves on a two-dimensional plane aperture are focused on an imaging plane at a certain distance through a digital focusing principle, and then reflection and scattering characteristic distribution of an imaging area, namely millimeter wave images of the imaging area, are recovered through space inversion calculation.
Further, the imaging device is also provided with a carrying device for carrying the detection device and scanning the stone curtain wall;
the main control module is also connected with a tablet personal computer through a wireless network transmission module, the tablet personal computer is used as a display control platform, and an operator controls the imaging system through preloaded matched tool software and obtains imaging results;
the imaging device is integrated in a metal shell, so that the whole structure is compact, a good electromagnetic shielding environment is provided, and the signal acquisition quality is further improved.
The invention also provides a millimeter wave-based stone curtain wall metal structure perspective imaging method, which adopts the imaging device, and comprises the following steps:
step S101, horizontally arranging the detection device, and arranging the antenna array parallel to the ground and the measured wall surface;
step S102, carrying a detection device by a carrying device to perform uniform motion along a direction perpendicular to an antenna array according to a preset detection path;
step S103, a main control module controls a signal source module to generate a signal to be transmitted in the movement process, and the signal is transmitted to a curtain wall through an antenna array by a millimeter wave transmitting module;
step S104, a millimeter wave receiving and collecting module collects reflected millimeter wave echo signals;
step S105, the signal processing module processes the acquired millimeter wave echo signals into perspective images;
step S106, the main control module transmits the relative positions of the perspective image and the current image calculated according to the movement speed to a host computer (tablet personal computer);
step S107, the inspector confirms the detection result and marks the position of the problem.
Further, the speed of the uniform motion in step S102 is not more than 0.5m/S.
Further, the operating frequency of the signal to be transmitted in step S103 is 30GHz.
Further, the resolution of the fluoroscopic image described in step S105 is 4mm.
Further, the perspective image in step S105 is a planar gray-scale image processed based on a synthetic aperture radar imaging algorithm.
Further, step S101 further includes determining a detected area and a detection path of the curtain wall.
The technical scheme of the invention has the following beneficial effects:
1. the invention can realize the batch visual detection of the metal structure of the large-area stone curtain wall under the condition of not damaging the existing building curtain wall;
2. millimeter waves are adopted as detection means, so that the penetrability of stone can be ensured, and the detection precision requirement of metal pendants can be met; the ka-band millimeter wave can penetrate stone with the thickness not less than 30mm, and the optimal line resolution can reach 4mm;
3. the integrated linear array millimeter wave radar design is adopted, so that the volume and the weight of the detection equipment are smaller, and the maintenance, the deployment and the batch use are easy; the integrated design can complete detection control and detection result acquisition without connecting cables outside;
4. the millimeter wave radar is adopted as a detection means, the detection equipment has no radiation risk, and meanwhile, the energy is greatly attenuated after the millimeter wave penetrates through the stone, so that the electromagnetic radiation risk to the human body in the building is also avoided; adopting a horizontal linear array to perform one-dimensional motion scanning in the vertical direction, and finishing signal emission, acquisition, processing and output in real time in the motion process; the operation mode enables the millimeter wave radar to perform uninterrupted continuous detection on the building curtain wall, and the detection efficiency is high.
Drawings
FIG. 1 is a millimeter wave perspective imaging system of the present invention;
FIG. 2 is a schematic diagram of the detection process of the present invention;
FIG. 3 is a schematic diagram of a detection path of the present invention;
FIG. 4 is an effect diagram of the present invention for scanning imaging using the present invention;
FIG. 5 is a perspective view of a detecting device and a horizontal linear array antenna according to the present invention;
fig. 6 is a flow chart of the present invention.
Detailed Description
The invention is described in further detail below with reference to the drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting thereof. It should be further noted that, for convenience of description, only some, but not all of the structures related to the present invention are shown in the drawings.
In the description of the present invention, unless explicitly stated and limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
In the present invention, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.
In the description of the present embodiment, the terms "upper", "lower", "front", "rear", "left", "right", and the like are orientation or positional relationships based on those shown in the drawings, and are merely for convenience of description and simplicity of operation, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like, are used merely for distinguishing between descriptions and not for distinguishing between them.
As shown in fig. 1 to 6, the present invention provides a millimeter wave-based perspective imaging device for a metal structure of a stone curtain wall, which is characterized by comprising: a detection device and a horizontal linear array antenna;
the detection device includes: the device comprises a battery pack, a power supply conversion module, a signal source module, a millimeter wave transmitting module, a millimeter wave receiving module, a signal processing module and a main control module;
the battery pack is used for supplying power;
the power supply conversion module is used for converting an external input power supply into a linear power supply required by the internal functional module;
the signal source module is used for generating a signal to be transmitted with preset characteristics;
the millimeter wave transmitting module is used for amplifying the signal generated by the signal source module and transmitting millimeter waves to the detected area;
the millimeter wave receiving module is used for collecting millimeter wave signals returned from the detected area and converting the millimeter wave signals into digital signals;
the signal processing module is used for extracting effective information from the digital signals output by the millimeter wave receiving module;
the main control module is used for receiving an external control instruction, controlling the signal processing module and the signal source module, packaging and transmitting signal processing result data;
the horizontal linear array antenna includes: the antenna array and the switch controller connected with the antenna array are used for transmitting and receiving millimeter wave signals;
the main control module is connected with the signal processing module and the signal source module; the signal processing module is connected with the millimeter wave receiving and collecting module, the signal source module is connected with the millimeter wave transmitting module, and the signal processing module and the signal source module are connected with the horizontal linear array antenna.
The millimeter wave receiving module realizes the suppression of noise in a sampling signal by using a multi-channel Kalman filter in the pretreatment of the sampling signal, a state space model is established by a sampling multi-channel Kalman filter algorithm to describe the relation between the signal and the noise, the state is estimated by using the Kalman filter, the input noise is suppressed by using the signals of a plurality of channels, the noise suppression effect is effectively improved, and the millimeter wave receiving module comprises a prediction stage and an updating stage, and specifically comprises the following steps:
the prediction stage calculation formula is as follows:
wherein ,
is the state prediction value at time step k, < ->Is the state estimate at time step k-1,
F k is a state transition matrix, P k|k-1 Is the state prediction error covariance matrix at time step k,is the state estimation error covariance matrix at time step k-1, Q k Is a process noise covariance matrix;
the update phase calculation formula is as follows:
P k|k ＝(I-K k H k )P k|k-1
wherein ,Hk Is the Kalman gain, y k Is the observed value, H k Is an observation matrix，R k Is the observed noise covariance matrix and,is the state estimate at time step k, and I is the identity matrix.
The signal processing module is used for reducing interference by optimizing a signal processing algorithm and adding an adaptive filtering algorithm, so that imaging precision is effectively improved; the adaptive filtering adopts an LMS algorithm:
w(n+1)＝w(n)+2μe(n)x(n)，
where w (n) is the weight vector of the adaptive filter, x (n) is the vector of the input signal, e (n) is the error between the desired output signal and the actual output signal, μ is the step size factor of the adaptive filter, and the filter coefficients are updated once each time a new x (n) and d (n) is given;
carrying out imaging algorithm processing based on synthetic aperture on the signal after the signal pretreatment is finished, wherein the synthetic aperture imaging algorithm is mainly carried out on echo IQ fundamental frequency signals;
performing two-dimensional Fourier transform and three-dimensional Fourier inverse transform, and recovering the imaging area signal according to a holographic imaging algorithm; the mathematical expression is as follows,
wherein s (x, y, w) is zero intermediate frequency signal obtained by mixing the echo signal scattered by the millimeter wave signal through the target f (x, y, z) and the local oscillation signal after being received by the antenna array on the XY plane,spherical wave signals scattered for the target;
the basic physical meaning is that different unfocused coherent waves on a two-dimensional plane aperture are focused on an imaging plane at a certain distance through a digital focusing principle, and then reflection and scattering characteristic distribution of an imaging area, namely millimeter wave images of the imaging area, are recovered through space inversion calculation.
The imaging device is also provided with a carrying device for carrying the detection device and scanning the stone curtain wall;
the main control module is also connected with a tablet personal computer through a wireless network transmission module, the tablet personal computer is used as a display control platform, and an operator controls the imaging system through preloaded matched tool software and obtains imaging results;
the imaging device is integrated in a metal shell, so that the whole structure is compact, a good electromagnetic shielding environment is provided, and the signal acquisition quality is further improved.
The invention also provides a millimeter wave-based stone curtain wall metal structure perspective imaging method, which adopts the imaging device, and comprises the following steps:
1. a inspector surveys the working condition of the site to determine the area to be detected of the stone curtain wall of the building;
2. preparing a movement path of the carrying device according to the building shape of the detection area;
3. installing a detection device to the carrying device and starting the system to control the carrying device to move to a detected area of the stone curtain wall of the building;
4. the carrying device performs uniform motion according to a preset motion path and starts detection at the same time;
5. the main control module controls the signal source module to generate millimeter wave signals according to the movement speed and the relative path position;
6. the millimeter wave transmitting module amplifies the power of the signal generated by the signal source module and transmits the signal to the stone through the antenna array;
7. due to penetrability of millimeter waves to stone materials and strong reflectivity of metal structures to millimeter waves, the millimeter wave receiving and collecting module collects reflected echoes;
8. the signal processing module processes millimeter wave signals which change along with the scanning position by combining the acquired echo signals, the motion path and the motion speed to obtain a perspective image result of the whole detected area;
9. the main control module sends the real-time perspective imaging result to a tablet personal computer of a inspector through the wireless transmission module;
10. and the detection personnel makes a judgment according to the perspective imaging result and marks the problematic plate.
Through the operation steps, the rapid visual detection of the detected wall surface of the building can be realized on the premise of not damaging the outer surface of the building.
The speed of the uniform motion in the step 4 is not more than 0.5m/S.
The millimeter wave frequency in step 7 is 30GHz.
The resolution of the perspective image described in step 8 is 4mm.
The perspective image in the step 8 is a plane gray image processed based on a synthetic aperture radar imaging algorithm.
The foregoing description is only of the preferred embodiments of the present invention and is not intended to limit the scope of the invention, and all equivalent structural changes made by the description of the present invention and the accompanying drawings or direct/indirect application in other related technical fields are included in the scope of the present invention.
Claims (10)
1. Millimeter wave-based stone curtain wall metal structure perspective imaging device is characterized by comprising: a detection device and a horizontal linear array antenna;
the detection device includes: the device comprises a battery pack, a power supply conversion module, a signal source module, a millimeter wave transmitting module, a millimeter wave receiving module, a signal processing module and a main control module;
the battery pack is used for supplying power;
the power supply conversion module is used for converting an external input power supply into a linear power supply required by the internal functional module;
the signal source module is used for generating a signal to be transmitted with preset characteristics;
the millimeter wave transmitting module is used for amplifying the signal generated by the signal source module and transmitting millimeter waves to the detected area;
the millimeter wave receiving module is used for collecting millimeter wave signals returned from the detected area and converting the millimeter wave signals into digital signals;
the signal processing module is used for extracting effective information from the digital signals output by the millimeter wave receiving module;
the main control module is used for receiving an external control instruction, controlling the signal processing module and the signal source module, packaging and transmitting signal processing result data;
the horizontal linear array antenna includes: the antenna array and the switch controller connected with the antenna array are used for transmitting and receiving millimeter wave signals;
the main control module is connected with the signal processing module and the signal source module; the signal processing module is connected with the millimeter wave receiving and collecting module, the signal source module is connected with the millimeter wave transmitting module, and the signal processing module and the signal source module are connected with the horizontal linear array antenna.
2. The millimeter wave-based stone curtain wall metal structure perspective imaging device according to claim 1, wherein,
the millimeter wave receiving module realizes the suppression of noise in a sampling signal by using a multi-channel Kalman filter in the pretreatment of the sampling signal, a state space model is established by a sampling multi-channel Kalman filter algorithm to describe the relation between the signal and the noise, the state is estimated by using the Kalman filter, the input noise is suppressed by using the signals of a plurality of channels, the noise suppression effect is effectively improved, and the millimeter wave receiving module comprises a prediction stage and an updating stage, and specifically comprises the following steps:
the prediction stage calculation formula is as follows:
wherein ,
is the state prediction value at time step k, < ->Is the state estimate at time step k-1,
F k is a state transition matrix, P k|k-1 Is the state prediction error covariance matrix at time step k,is the state estimation error covariance matrix at time step k-1, Q k Is a process noise covariance matrix;
the update phase calculation formula is as follows:
P k|k ＝(I-K k H k )P k|k-1
wherein ,Kk Is the Kalman gain, y k Is the observed value, H k Is an observation matrix, R k Is the observed noise covariance matrix and,is the state estimate at time step k, and I is the identity matrix.
3. The millimeter wave-based stone curtain wall metal structure perspective imaging device according to claim 1, wherein,
the signal processing module is used for reducing interference by optimizing a signal processing algorithm and adding an adaptive filtering algorithm, so that imaging precision is effectively improved; the adaptive filtering adopts an LMS algorithm:
w(n+1)＝w(n)+2μe(n)x(n)，
where w (n) is the weight vector of the adaptive filter, x (n) is the vector of the input signal, e (n) is the error between the desired output signal and the actual output signal, μ is the step size factor of the adaptive filter, and the filter coefficients are updated once each time a new x (n) and d (n) is given;
carrying out imaging algorithm processing based on synthetic aperture on the signal after the signal pretreatment is finished, wherein the synthetic aperture imaging algorithm is mainly carried out on echo IQ fundamental frequency signals;
performing two-dimensional Fourier transform and three-dimensional Fourier inverse transform, and recovering the imaging area signal according to a holographic imaging algorithm; the mathematical expression is as follows,
wherein s (x, y, z) is zero intermediate frequency signal obtained by mixing the echo signal scattered by the millimeter wave signal through the target f (x, y, z) and the local oscillation signal after being received by the antenna array on the XY plane,spherical wave signals scattered for the target;
the basic physical meaning is that different unfocused coherent waves on a two-dimensional plane aperture are focused on an imaging plane at a certain distance through a digital focusing principle, and then reflection and scattering characteristic distribution of an imaging area, namely millimeter wave images of the imaging area, are recovered through space inversion calculation.
4. The millimeter wave-based stone curtain wall metal structure perspective imaging device according to claim 1, wherein the imaging device is further provided with a carrying device for carrying the detection device and scanning the stone curtain wall;
the main control module is also connected with a tablet personal computer through a wireless network transmission module, the tablet personal computer is used as a display control platform, and an operator controls the imaging system through preloaded matched tool software and obtains imaging results;
the imaging device is integrated in a metal shell, so that the whole structure is compact, a good electromagnetic shielding environment is provided, and the signal acquisition quality is further improved.
5. A millimeter wave-based stone curtain wall metal structure perspective imaging method, adopting the imaging device of any one of claims 1-4, characterized in that the method comprises the following steps:
step S101, horizontally arranging the detection device, and arranging the antenna array parallel to the ground and the measured wall surface;
step S102, carrying a detection device by a carrying device to perform uniform motion along a direction perpendicular to an antenna array according to a preset detection path;
step S103, a main control module controls a signal source module to generate a signal to be transmitted in the movement process, and the signal is transmitted to a curtain wall through an antenna array by a millimeter wave transmitting module;
step S104, a millimeter wave receiving and collecting module collects reflected millimeter wave echo signals;
step S105, the signal processing module processes the acquired millimeter wave echo signals into perspective images;
step S106, the main control module transmits the relative positions of the perspective image and the current image calculated according to the movement speed to the tablet personal computer;
step S107, the inspector confirms the detection result and marks the position of the problem.
6. The millimeter wave-based stone curtain wall metal structure perspective imaging method according to claim 5, wherein the uniform motion speed in step S102 is not more than 0.5m/S.
7. The millimeter wave-based stone curtain wall metal structure perspective imaging method according to claim 5, wherein the working frequency of the signal to be transmitted in step S103 is 30GHz.
8. The millimeter wave-based stone curtain wall metal structure perspective imaging method according to claim 1, wherein the perspective image resolution in step S105 is 4mm.
9. The millimeter wave-based stone curtain wall metal structure perspective imaging method according to claim 5, wherein the perspective image in step S105 is a plane gray scale image processed based on a synthetic aperture radar imaging algorithm.
10. The millimeter wave based stone curtain wall metal structure perspective imaging method according to claim 5, wherein step S101 further comprises determining a detected area and a detection path of the curtain wall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310863390.4A CN116819529B (en) | 2023-07-13 | Stone curtain wall metal structure perspective imaging method and device based on millimeter waves |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310863390.4A CN116819529B (en) | 2023-07-13 | Stone curtain wall metal structure perspective imaging method and device based on millimeter waves |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN116819529A true CN116819529A (en) | 2023-09-29 |
| CN116819529B CN116819529B (en) | 2024-04-30 |
Family
ID=
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005062943A2 (en) * | 2003-12-24 | 2005-07-14 | Trex Enterprises Corporation | Video rate passive millimeter wave imaging system |
| CN105866771A (en) * | 2016-06-15 | 2016-08-17 | 合肥工业大学 | Hidden object detecting system and detecting method thereof |
| CN108169749A (en) * | 2017-12-18 | 2018-06-15 | 上海理工大学 | Utilize the method for reinforcing bar in millimeter wave detection wall |
| CN109507653A (en) * | 2018-10-22 | 2019-03-22 | 中国人民解放军第四军医大学 | A method of multi-information perception bioradar system and its acquisition target information based on UWB |
| US20190195728A1 (en) * | 2017-12-22 | 2019-06-27 | Infineon Technologies Ag | System and Method of Monitoring a Structural Object Using a Millimeter-Wave Radar Sensor |
| CN111157960A (en) * | 2019-12-03 | 2020-05-15 | 南京汇君半导体科技有限公司 | Vital sign signal enhancement method and equipment, and extraction method and equipment based on millimeter wave radar |
| CN113689416A (en) * | 2021-08-30 | 2021-11-23 | 中建深圳装饰有限公司 | Building curtain wall safety nondestructive detection imaging method based on microwave imaging |
| US20220066456A1 (en) * | 2016-02-29 | 2022-03-03 | AI Incorporated | Obstacle recognition method for autonomous robots |
| CN115015913A (en) * | 2022-05-31 | 2022-09-06 | 中建深圳装饰有限公司 | Millimeter wave near-field high-precision three-dimensional imaging method for building curtain wall detection |
| CN115131518A (en) * | 2022-07-15 | 2022-09-30 | 中建深圳装饰有限公司 | Three-dimensional display method for millimeter wave near-field imaging perspective detection of building curtain wall |
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005062943A2 (en) * | 2003-12-24 | 2005-07-14 | Trex Enterprises Corporation | Video rate passive millimeter wave imaging system |
| US20220066456A1 (en) * | 2016-02-29 | 2022-03-03 | AI Incorporated | Obstacle recognition method for autonomous robots |
| CN105866771A (en) * | 2016-06-15 | 2016-08-17 | 合肥工业大学 | Hidden object detecting system and detecting method thereof |
| CN108169749A (en) * | 2017-12-18 | 2018-06-15 | 上海理工大学 | Utilize the method for reinforcing bar in millimeter wave detection wall |
| US20190195728A1 (en) * | 2017-12-22 | 2019-06-27 | Infineon Technologies Ag | System and Method of Monitoring a Structural Object Using a Millimeter-Wave Radar Sensor |
| CN109507653A (en) * | 2018-10-22 | 2019-03-22 | 中国人民解放军第四军医大学 | A method of multi-information perception bioradar system and its acquisition target information based on UWB |
| CN111157960A (en) * | 2019-12-03 | 2020-05-15 | 南京汇君半导体科技有限公司 | Vital sign signal enhancement method and equipment, and extraction method and equipment based on millimeter wave radar |
| CN113689416A (en) * | 2021-08-30 | 2021-11-23 | 中建深圳装饰有限公司 | Building curtain wall safety nondestructive detection imaging method based on microwave imaging |
| CN115015913A (en) * | 2022-05-31 | 2022-09-06 | 中建深圳装饰有限公司 | Millimeter wave near-field high-precision three-dimensional imaging method for building curtain wall detection |
| CN115131518A (en) * | 2022-07-15 | 2022-09-30 | 中建深圳装饰有限公司 | Three-dimensional display method for millimeter wave near-field imaging perspective detection of building curtain wall |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US8894579B2 (en) | Ultrasonic diagnostic apparatus and controlling method of ultrasonic diagnostic apparatus | |
| EP2574956A1 (en) | Ultrasound imaging system and method with side lobe suppression via coherency factor weighting | |
| WO2018196245A1 (en) | Close-range microwave imaging method and system | |
| CN110824483A (en) | Modular multi-beam imaging sonar | |
| JP4825183B2 (en) | Surface layer flow velocity estimation method, apparatus and program | |
| JP2006006931A (en) | Adaptive ultrasound imaging system | |
| CN116819529B (en) | Stone curtain wall metal structure perspective imaging method and device based on millimeter waves | |
| CN113504525A (en) | Method and system for inverting visibility in fog region | |
| CN116819529A (en) | Stone curtain wall metal structure perspective imaging method and device based on millimeter waves | |
| CN112966212B (en) | Multi-parameter real-time monitoring imaging system based on ultrasonic echo backscattering energy change | |
| CN113820708A (en) | River surface flow field accurate measurement radar based on intelligence of calculating | |
| JP2009020015A (en) | Radar system | |
| Lingevitch et al. | Parabolic equation simulations of reverberation statistics from non-Gaussian-distributed bottom roughness | |
| EP3171200B1 (en) | Low-cost underwater acoustic system for real-time three-dimensional imaging | |
| CN104459679A (en) | Target medium-band high-resolution processing system of azimuth rotation scanning mechanism surveillance radar | |
| CN110731775B (en) | Electronic focus excited medical imaging system and method for imaging by using same | |
| CN113008355B (en) | Stealth evaluation method for acoustic cloak | |
| CN115032635A (en) | Millimeter wave synthetic aperture radar near-field imaging device and method | |
| Fyleris et al. | Comparative analysis of plane-wave imaging and the total focusing method in the reconstruction of complex geometrical surfaces | |
| Valle et al. | Very high resolution radar imaging with a stepped frequency system | |
| Tasinkevych et al. | Optimization of the multi-element synthetic transmit aperture method for medical ultrasound imaging applications | |
| CN116643249B (en) | Millimeter wave imaging visualization quantitative detection method for internal layering defect of GFRP | |
| Moreau et al. | Efficient imaging techniques using an ultrasonic array | |
| CN111537609A (en) | Ultrasonic phased array micro-space micro-fluidic detection system | |
| WO2023211360A1 (en) | A milli meter (mm) wave imaging system for non-destructive testing and deploying methods thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant |