CN116400348A - Device and method for monitoring and early warning safety of water-containing soil buried personnel rescue site slope - Google Patents
Device and method for monitoring and early warning safety of water-containing soil buried personnel rescue site slope Download PDFInfo
- Publication number
- CN116400348A CN116400348A CN202310083702.XA CN202310083702A CN116400348A CN 116400348 A CN116400348 A CN 116400348A CN 202310083702 A CN202310083702 A CN 202310083702A CN 116400348 A CN116400348 A CN 116400348A
- Authority
- CN
- China
- Prior art keywords
- measuring unit
- early warning
- monitoring
- water content
- radar
- 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.)
- Pending
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 109
- 238000012544 monitoring process Methods 0.000 title claims abstract description 100
- 239000002689 soil Substances 0.000 title claims abstract description 40
- 238000000034 method Methods 0.000 title claims abstract description 37
- 238000009434 installation Methods 0.000 claims abstract description 24
- 238000012545 processing Methods 0.000 claims description 28
- 238000005070 sampling Methods 0.000 claims description 18
- 230000000007 visual effect Effects 0.000 claims description 15
- 238000005259 measurement Methods 0.000 claims description 13
- 230000005540 biological transmission Effects 0.000 claims description 11
- 230000005856 abnormality Effects 0.000 claims description 10
- QVFWZNCVPCJQOP-UHFFFAOYSA-N chloralodol Chemical compound CC(O)(C)CC(C)OC(O)C(Cl)(Cl)Cl QVFWZNCVPCJQOP-UHFFFAOYSA-N 0.000 claims description 9
- 238000003384 imaging method Methods 0.000 claims description 6
- 230000001133 acceleration Effects 0.000 claims description 5
- 238000009412 basement excavation Methods 0.000 claims description 4
- 238000012937 correction Methods 0.000 claims description 4
- 230000003993 interaction Effects 0.000 claims description 4
- 230000002093 peripheral effect Effects 0.000 claims description 4
- 239000003990 capacitor Substances 0.000 claims description 3
- 230000010354 integration Effects 0.000 abstract description 4
- 230000008859 change Effects 0.000 description 9
- 238000006073 displacement reaction Methods 0.000 description 8
- 238000010586 diagram Methods 0.000 description 6
- 230000006870 function Effects 0.000 description 6
- 238000009933 burial Methods 0.000 description 5
- 230000015654 memory Effects 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 238000004364 calculation method Methods 0.000 description 4
- 238000001914 filtration Methods 0.000 description 4
- 238000004458 analytical method Methods 0.000 description 3
- 238000013461 design Methods 0.000 description 3
- 230000033001 locomotion Effects 0.000 description 3
- 238000003860 storage Methods 0.000 description 3
- 230000002159 abnormal effect Effects 0.000 description 2
- 238000004422 calculation algorithm Methods 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 238000011065 in-situ storage Methods 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 238000012806 monitoring device Methods 0.000 description 2
- 239000008234 soft water Substances 0.000 description 2
- 230000000087 stabilizing effect Effects 0.000 description 2
- 230000037396 body weight Effects 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 238000004590 computer program Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003891 environmental analysis Methods 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 238000009499 grossing Methods 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 238000005305 interferometry Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 238000001028 reflection method Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
- G01S13/88—Radar or analogous systems specially adapted for specific applications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C9/00—Measuring inclination, e.g. by clinometers, by levels
-
- 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
- G01N33/24—Earth materials
- G01N33/246—Earth materials for water content
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
- G08B21/02—Alarms for ensuring the safety of persons
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
- G08B21/18—Status alarms
- G08B21/182—Level alarms, e.g. alarms responsive to variables exceeding a threshold
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
- G08B21/18—Status alarms
- G08B21/24—Reminder alarms, e.g. anti-loss alarms
-
- 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
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/80—Services using short range communication, e.g. near-field communication [NFC], radio-frequency identification [RFID] or low energy communication
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Remote Sensing (AREA)
- Radar, Positioning & Navigation (AREA)
- Emergency Management (AREA)
- Computer Networks & Wireless Communication (AREA)
- Life Sciences & Earth Sciences (AREA)
- Business, Economics & Management (AREA)
- Chemical & Material Sciences (AREA)
- Signal Processing (AREA)
- Health & Medical Sciences (AREA)
- Biochemistry (AREA)
- Food Science & Technology (AREA)
- Medicinal Chemistry (AREA)
- Analytical Chemistry (AREA)
- Geology (AREA)
- General Health & Medical Sciences (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Environmental & Geological Engineering (AREA)
- Electromagnetism (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Pit Excavations, Shoring, Fill Or Stabilisation Of Slopes (AREA)
Abstract
The invention discloses a device and a method for monitoring and early warning safety of a water-containing soil buried personnel rescue site slope, which relate to the technical field of geological disaster emergency rescue safety monitoring. The scheme has the advantages of small size, light weight, high integration level, portability in transportation and installation, support of one-key operation, no need of additional computer, suitability for carrying by rescue workers to each rescue point for carrying out near distributed monitoring, and guarantee of safety of rescue equipment and life safety of the rescue workers on water-containing soil buried personnel rescue sites.
Description
Technical Field
The invention relates to the technical field of geological disaster emergency rescue safety monitoring, in particular to the technical field of slope deformation microwave remote sensing differential interference deformation measurement, and particularly relates to a device and a method for monitoring and early warning of slope safety of water-containing soil buried personnel rescue sites.
Background
The distribution area of the geological disaster accident influence area of China is wide, the buried pressure depth of trapped personnel is large, the soil moisture content of the buried pressure environment is high, engineering machinery is required to excavate downwards during rescue, a buried pressure covering is removed, wounded persons are transported, a water-containing soil slope is formed in the rescue process, the deformation development is fast due to the influence of engineering disturbance and the moisture content, the trapped wounded persons, rescue personnel and rescue equipment are seriously threatened by landslide and collapse hidden danger, the positions of the buried pressure personnel are dispersed, monitoring and early warning are required to be carried out on each rescue point, and the rescue safety is guaranteed.
The traditional contact type monitoring technologies such as a crack meter and a displacement meter have the problems that installation and erection are difficult, the monitoring frequency is low, the monitoring precision is poor and the like, the existing non-contact type microwave remote sensing equipment such as a mechanical motion type slope radar and the like is large in size and heavy in weight, only one parameter of slope displacement can be monitored by remote station setting, shadow is formed in an image due to shielding of electromagnetic wave vision at the position of a deep buried pressure person, the mechanical motion realizes that the synthetic aperture monitoring period is long, echo incoherence is easy to cause, single parameter of a single measuring point cannot effectively early warn potential hazards of a rescue site slope of the water-containing soil buried pressure person, and the like, so the device and the method specially suitable for the rescue site slope safety monitoring and early warning of the water-containing soil buried pressure person are not available at present.
Disclosure of Invention
Therefore, the invention develops the slope safety monitoring device for the rescue site of the water-containing soil buried personnel through complex environmental analysis of the rescue site, and is used for slope monitoring and early warning of the rescue site of the water-containing soil buried personnel. Based on the characteristics of soft water-containing soil, high water content and the like, a three-parameter linkage monitoring and early warning method is provided, a multi-sensor is integrated into a millimeter wave measuring unit installation upright rod, and the rapid installation and comprehensive monitoring of monitoring equipment on an emergency rescue site are realized through hardware innovation and monitoring flow innovation; dynamic area early warning is realized through 'three parameters' comprehensive monitoring.
Specifically, the invention provides the following technical scheme:
on one hand, the invention provides a water-containing soil buried personnel rescue site slope safety monitoring and early warning device, which comprises an integrated installation upright rod, a millimeter wave measuring unit, a water content measuring unit, a triaxial inclination measuring unit, a temperature and humidity sensor, a system control unit, STM32 signal processing and control boards, a 5G data transmission module, an Lora module and an audible and visual alarm; the integrated installation vertical rod comprises a lower part and an upper telescopic part, the integrated installation vertical rod is of a telescopic structure, and the upper telescopic part can be sleeved in the lower part of the integrated installation vertical rod so as to realize telescopic adjustment with variable length;
the water content measuring unit, the triaxial inclination measuring unit, the STM32 signal processing and the control panel are integrated in the integrated mounting upright rod;
the millimeter wave measuring unit is arranged at the top end of the integrated mounting upright rod; the water content measuring unit is arranged in the lower part of the integrated mounting upright rod;
the top of integrated installation pole setting lower part is provided with stable disc.
Preferably, the millimeter wave measuring unit performs data interaction with the water content measuring unit and the triaxial dip angle measuring unit respectively; the system control unit is respectively connected with the millimeter wave measuring unit, the water content measuring unit and the triaxial dip angle measuring unit;
the system control unit is connected with the 5G data transmission module and the Lora module;
the 4G output module is connected with a cloud server; the Lora module is connected with the audible and visual annunciator.
Preferably, the device is arranged as follows:
step one, determining the arrangement points of the device based on the positions of the buried pressure personnel;
step two, determining the number of the equipment based on the positions of the buried pressure personnel and the peripheral slope conditions;
thirdly, arranging at least 2 devices on one side, close to the landslide body, of the position of the buried pressure personnel;
step four, at least 2 devices are arranged on one side, far away from the landslide body, of the position of the buried pressure personnel, wherein one device monitors the deformation condition of the whole side slope, and the other device monitors the deformation condition of the side slope around the excavation area;
and fifthly, starting the laid equipment for monitoring, analyzing the monitoring result, and determining whether to trigger early warning or not based on the monitoring result.
Preferably, the millimeter wave measurement unit comprises four cascaded monolithic frequency modulation continuous wave radar transceivers;
after ADC data received by the single-chip frequency modulation continuous wave radar transceiver is calibrated in a frequency domain and a time domain, a radar image is generated after distance FFT, azimuth FFT and imaging focusing are carried out;
the radar image is subjected to image registration, interference patterns and coherence patterns are generated, and then phase unwrapping and atmospheric correction are carried out to obtain deformation patterns for monitoring.
Preferably, the water content measuring unit is connected with the system control unit through STM32 signal processing and a serial port in the control panel;
the water content measuring unit comprises 8 water content monitoring units, wherein each water content monitoring unit comprises a ring electrode pair, a voltage-controlled oscillator, a frequency dividing circuit, a voltage comparator and a counter;
the equivalent capacitor formed by the electrode pair and the water-containing soil property outputs different capacitance values in the soil property with different water contents, resonates with the voltage-controlled oscillator, then is converted into a square wave signal through a frequency dividing circuit, and the square wave signal is converted into a frequency signal which is convenient to collect through a voltage comparator and is output.
Preferably, the triaxial dip angle measuring unit is connected with the system control unit through STM32 signal processing and a serial port in a control board;
the triaxial inclination angle measuring unit comprises a triaxial MEMS acceleration sensor and a magnetic field sensor.
Preferably, the system control unit comprises an FPGA controller, a DSP controller, a data buffer and a serial transceiver;
the FPGA controller receives data of the triaxial inclination angle measuring unit, the water content measuring unit and the temperature and humidity sensor through the serial port transceiver, and performs data threshold comparison;
and the DSP controller receives the data of the millimeter wave measuring unit and forms a deformation graph after processing.
Preferably, the data threshold comparison includes: comparing the monitoring results of the triaxial inclination angle measuring unit and the water content measuring unit through a preset threshold value, immediately sending out inclination angle abnormality prompt when the monitoring result of the triaxial inclination angle measuring unit is larger than an inclination angle early warning threshold value, and improving the radar sampling frequency; when the water content monitoring result is larger than the water content early warning threshold value, immediately sending out a water content abnormality prompt, and improving the radar sampling frequency.
Preferably, the serial transceiver performs data interaction with the STM32 signal processing and control board.
On the other hand, the invention also provides a method for monitoring and early warning the safety of the side slope of the rescue site of the water-bearing soil buried personnel, which comprises the following steps:
s1, starting data acquisition of monitoring equipment which is arranged on site, and synchronously acquiring multi-parameter monitoring data;
s2, setting early warning thresholds of different parameters, including a water content early warning threshold, an inclination angle early warning threshold and a radar data threshold;
s3, when the water content and the inclination angle respectively exceed the threshold values, a first alarm prompt is sent out, and the sampling frequency of the side slope radar is dynamically adjusted;
s4, comparing the maximum value of the radar monitoring result with a radar early warning threshold value, returning to S3 if the maximum value is smaller than or equal to the radar early warning threshold value, otherwise, calculating a corresponding area;
s5, judging whether the area is larger than an area threshold value, if so, returning to S3, otherwise, determining an early warning level according to the area and the early warning value;
s6, after the early warning level is determined, leading in an early warning value and an early warning area, and marking the early warning position and the early warning level on a display interface;
and S7, if the early warning area is searched, early warning recording is carried out and reporting is carried out.
Compared with the prior art, the technical scheme of the invention adopts an improved radar layout scheme and a plunger type layout method, and simultaneously integrates various measuring units into the interior of a slope radar plunger, thereby improving the field layout efficiency and realizing a three-parameter combined monitoring method; the high-integration radio frequency chip replaces a discrete radio frequency element, and the embedded DSP signal processor is utilized to complete the real-time calculation of a radar data processing algorithm, so that the working mode of light weight and low power consumption of the slope radar is realized, the real-time processing of data is realized through hardware acceleration, and the monitoring efficiency is improved; according to the characteristic of water-containing soil, a three-parameter comprehensive early warning method is provided, and according to the on-site water content and inclination change, the sampling rate of the slope radar is dynamically adjusted, so that the three-parameter area dynamic early warning is realized.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a block diagram of a device system according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of an in-situ layout of a device according to an embodiment of the present invention;
FIG. 3 is a field layout flow chart of an embodiment of the present invention;
FIG. 4 is a flow chart of rescue safety monitoring and early warning according to an embodiment of the invention;
FIG. 5 is a schematic view of an in-situ layout apparatus according to an embodiment of the present invention;
fig. 6 is a block diagram of a millimeter wave measurement unit system according to an embodiment of the present invention;
fig. 7 is a data processing flow of a millimeter wave measurement unit according to an embodiment of the present invention;
FIG. 8 is a block diagram of a water content measuring unit according to an embodiment of the present invention;
FIG. 9 is a block diagram of a three-axis tilt measurement unit according to an embodiment of the present invention;
fig. 10 is a block diagram of a system control unit according to an embodiment of the present invention.
In the figure: 1-integrated installation upright pole, 2-temperature and humidity sensor, 3-audible and visual alarm, 4-high definition camera, 5-5G data transmission module, 6-pitching adjusting mechanism, 7-stable disk, 8-millimeter wave measuring unit 9-system control unit, 10-Lora module, 11-telescopic link, 12-STM32 signal processing and control panel, 13-triaxial inclination angle measuring unit, 14-moisture content measuring unit, 15-large capacity battery.
Detailed Description
Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be understood that the described embodiments are only some, but not all, of the embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
It will be appreciated by those of skill in the art that the following specific embodiments or implementations are provided as a series of preferred arrangements of the present invention for further explanation of the specific disclosure, and that the arrangements may be used in conjunction or association with each other, unless it is specifically contemplated that some or some of the specific embodiments or implementations may not be associated or used with other embodiments or implementations. Meanwhile, the following specific examples or embodiments are merely provided as an optimized arrangement, and are not to be construed as limiting the scope of the present invention.
The invention aims to solve the problems that: according to the problems that a rescue site of a water-containing soil pressure person needs to be excavated downwards for rescuing people, radar sight is blocked, construction disturbance is large, monitoring points are many and scattered, so that the on-site arrangement of a side slope radar is difficult, a foundation is unstable, and landslide induction factors are many. Based on the characteristics of soft water-containing soil, high water content and the like, an FPGA control unit is used for orderly controlling a millimeter wave measurement unit, a water content measurement unit, an inclination angle measurement unit and a 5G data transmission unit to form a water-containing soil burial personnel rescue site slope safety monitoring and early warning device, a rescue site displacement, inclination angle, water content and temperature and humidity monitoring data sensing network constructed based on the device is established, a three-parameter combined early warning method is established, and a water-containing soil burial personnel rescue site excavation slope dynamic area early warning mode is formed. The scheme has the advantages of small size, light weight, high integration level, portability in transportation and installation, support of one-key operation, no need of additional computer, suitability for carrying by rescue workers to each rescue point for carrying out near distributed monitoring, and guarantee of safety of rescue equipment and life safety of the rescue workers on water-containing soil buried personnel rescue sites.
In the embodiment, the invention improves the hardware scheme of the slope radar, adopts a cascade radio frequency chip with high integration level to replace a discrete radio frequency element, adopts an array antenna electronic scanning to replace a track mechanical scanning, greatly reduces the volume, the weight and the power consumption of the radar, reduces the weight of the slope radar from 75Kg to 10Kg and reduces the power consumption from 120W to 20W; the radar layout scheme is improved, a plunger type layout method is adopted, and meanwhile, various measuring units are integrated into the interior of a slope radar plunger, so that the on-site layout efficiency is improved, and a three-parameter combined monitoring method is realized; according to the characteristic of water-containing soil, a three-parameter comprehensive early warning method is provided, and the method dynamically adjusts the sampling rate of the slope radar according to the change of the water content in the field so as to realize multi-parameter area early warning. Scheme details are set forth below.
In this embodiment, with reference to fig. 1 and 5, the hardware components of the monitoring device are as follows: 1-integrated installation upright pole, 2-temperature and humidity sensor, 3-audible and visual alarm, 4-high definition camera, 5-5G data transmission module, 6-pitching adjusting mechanism, 7-stable disk, 8-millimeter wave measuring unit 9-system control unit, 10-Lora module, 11-telescopic link, 12-STM32 signal processing and control panel, 13-triaxial inclination angle measuring unit, 14-moisture content measuring unit, 15-large capacity battery. In order to solve the problem of field installation of each measuring unit and realize quick deployment of rescue fields, the novel equipment structure integrates the water content measuring units, the triaxial inclination measuring units, the high-capacity batteries, STM32 signal processing and control boards together, and is uniformly integrated into an installation vertical rod 1 of the millimeter wave measuring unit, wherein the lower part of the installation vertical rod 1 is provided with the water content measuring unit 14, the bottom is provided with the high-capacity battery 15, the upper part is provided with the telescopic vertical rod, and the top is provided with the millimeter wave measuring unit 8. Through integrated structural design, combine the soft characteristics of moisture soil property self, through inserting ground formula pole setting structure, solved monitoring facilities on-the-spot installation time consuming, difficult problem such as complicacy, realized the quick deployment of emergent rescue on-the-spot monitoring early warning equipment.
The integrated installation pole setting integrates various sensors into the installation pole setting through innovative design, so that the rapid deployment of monitoring equipment on a rescue site is realized. The bottom of the bracket is 80cm long and can be inserted into the soil with water, so that the fixing effect can be achieved, and the water content of the soil can be monitored in real time; the height of the ground part provided with the vertical rod is adjustable by 80-120cm, and a millimeter wave measuring unit, a 5G data transmission module, a l ora module and the like can be arranged; a stabilizing disc is arranged in the middle of the installation upright rod, so that the stabilizing effect is achieved, and the swinging of the side slope radar is prevented.
The millimeter wave measuring unit is a core unit of the whole system, the system adopts a high-integration radio frequency module in order to realize the portable and low-power-consumption slope radar, a system cascading scheme is adopted by utilizing a high-integration radio frequency chip to replace discrete radio frequency elements, the integration level of the system is improved, the weight and the volume of the system are greatly reduced, an array electronic scanning scheme is utilized to replace a mechanical scanning scheme by utilizing a microstrip antenna, the mechanical movement is reduced, the data sampling rate is improved, an embedded DSP (digital signal processor) kernel is utilized by an embedded hardware acceleration method, the real-time processing of slope radar data is realized, and the low-power consumption, high-speed and large-area slope real-time monitoring function is ensured. With reference to fig. 6, the millimeter wave measurement unit improves the number of receiving and transmitting channels through 4 cascaded radio frequency chips (i.e. monolithic frequency modulation continuous wave radar transceivers), realizes the function of 12-transmission 16-transmission multiple-transmission, can be equivalent to 192 virtual receiving units, and ensures a larger virtual aperture. The method realizes data processing such as radar imaging, interference, phase filtering, phase unwrapping, atmospheric correction and the like in the DSP, and realizes front-end processing of data through edge calculation. The millimeter wave measurement unit transmits original echo data through a network port, and the millimeter wave measurement unit is communicated with the cloud server through the 5G data transmission module, so that monitoring data can be transmitted in real time, and a control instruction sent by the system control unit is received, so that the sampling frequency is automatically modified.
With reference to fig. 7, the millimeter wave measurement unit performs data processing, calibrates the acquired ADC data of each channel through the calibration matrix, then performs radar imaging, the imaging process includes distance FFT, azimuth FFT, imaging focusing, finally generates a radar image, further performs interferometry after generating the radar image, and performs image registration, generates an interferogram and a coherence map (smoothing filter processing), phase unwrapping (optimal estimation method), atmospheric correction (permanent scatterer method), and generates a deformation map for subsequent monitoring.
The water content measuring unit is combined with the water content measuring unit shown in fig. 8, and adopts an FDR frequency domain reflection method, through an active transmitting electrode, the change of the water content is monitored, the water content of surrounding soil can be calculated through the frequency change, the measuring unit totally comprises 8 water content monitoring units, the water content monitoring units comprise electrode pairs for directly measuring the soil texture, a voltage-controlled oscillator, a prescaler, a voltage comparator and a binary counter which are connected with the electrode pairs, and the water content of the soil of 0-80cm underground can be monitored. The water content measuring unit is connected with the system control unit through a serial port and sends monitoring data in real time. The circuit of the water content monitoring unit consists of a ring electrode pair, a voltage-controlled oscillator, a frequency dividing circuit, a voltage comparator, a counter, STM32 signal processing and a control board. The equivalent capacitor formed by the electrode pair and the water-containing soil can output different capacitance values in the soil with different water contents, resonates with the voltage-controlled oscillator, then is converted into a square wave signal through a frequency division and shaping circuit, and finally converts the square wave signal into a frequency signal convenient to collect, and the water content of the soil is inverted through frequency change.
And the triaxial dip angle measuring unit is shown in combination with fig. 9, processes data by adopting three-level digital filtering, comprises dynamics calculation, a Kalman filtering algorithm, digital filtering, state estimation and the like, improves the anti-interference capability of the data, and realizes dip angle monitoring with high precision, high performance and high stability. And the monitoring data are transmitted in real time through the connection of the serial port and the system control unit. The core composition module of the triaxial sensor comprises a triaxial MEMS acceleration sensor, a magnetic field sensor, an STM32 signal processing and control board, wherein the STM32 signal processing and control board and a water content measuring unit share one unit, and data are interacted with a system control unit through a serial port.
The high-definition video has the main functions of shooting videos in the radar monitoring area of the rescue site slope in real time, uploading the videos to a monitoring center, and realizing the fusion display of radar deformation data and site video data in the monitoring center. The high-definition video is integrated inside the millimeter wave measuring unit.
The temperature and humidity sensor monitors on-site temperature and humidity data in real time, provides environment parameters for side slope radar data processing, and ensures accurate and reliable monitoring results. The temperature and humidity sensor is integrated inside the millimeter wave measuring unit.
And the system control unit is shown in combination with fig. 10, and adopts an FPGA+DSP as a main control chip, wherein the DSP mainly realizes the processing of radar data, the FPGA is mainly responsible for the data acquisition and pretreatment of each sensor, the monitoring results of the triaxial inclination angle measuring unit and the water content measuring unit are compared through a preset threshold value, and when the monitoring result of the triaxial inclination angle measuring unit is larger than the threshold value, an inclination angle abnormality prompt is immediately sent out, and the radar is controlled to improve the sampling frequency. When the water content monitoring result is larger than the set threshold value, immediately sending out a water content abnormality prompt, and improving the sampling frequency of the side slope radar to carry out encryption monitoring.
The Lora module is used for triggering the on-site audible and visual alarm in a wireless mode, the communication distance is more than 3 km, the monitoring equipment is integrated with the Lora data transmitting module, the audible and visual alarm is integrated with the Lora data receiving module, and the early warning command can be transmitted to the audible and visual alarms in a broadcasting mode.
And the 5G data transmission module realizes a data transmission function, uploads the on-site monitoring result to the cloud monitoring center in real time, and provides data support for on-site commanders.
The audible and visual alarm receives the instruction sent by the system control unit, provides on-site audible and visual early warning, can send out audible prompts such as water content abnormality, inclination angle abnormality, red early warning and the like, can be arranged on a water-containing soil buried personnel rescue site and a rescue command center, and can inform all rescue personnel of early warning information in the first time.
With reference to fig. 2 and 3, the device of the present invention is deployed in the field in the following manner:
firstly, determining the position of a buried pressure person through on-site life searching equipment, and selecting a monitoring equipment arrangement point according to the position of the buried pressure person;
secondly, determining the quantity of distributed cooperative monitoring equipment according to the positions of the buried pressure personnel and the peripheral slope conditions, and generally adopting 2 sets of water-bearing soil buried pressure personnel rescue site slope safety monitoring and early warning devices and 2 sets of water-bearing rate measuring units for safety monitoring;
thirdly, at least 2 independent water content measuring units (independent separated water content measuring units) are distributed on one side, close to the landslide body, of the buried personnel, and the water content change measured by the landslide body is monitored in real time;
fourthly, arranging 2 sets of water-containing soil burial staff rescue site slope safety monitoring and early warning devices on one side of the burial staff far away from the landslide body, monitoring the water content in real time, and simultaneously, monitoring the deformation condition of the whole slope by 1 radar, and monitoring the deformation condition of the slope around the excavation area of the burial staff by the other 1 radar;
and fifthly, starting all the equipment simultaneously through an instruction, starting distributed collaborative monitoring, and when the water content measuring unit or the inclination angle sensor is greatly changed, firstly prompting early warning information such as water content abnormality, inclination angle abnormality and the like by the on-site audible and visual alarm, and secondly, automatically improving the sampling frequency of the side slope radar according to the water content and inclination angle change by the system, and carrying out encryption monitoring on the side slope.
And sixthly, analyzing the monitoring result, and triggering early warning immediately after the displacement change monitored by the millimeter wave measuring unit exceeds the threshold value of speed-area-duration.
In a more preferred embodiment, referring to fig. 4, the method of the present invention comprehensively considers a plurality of factors affecting the stability of the soil containing water, and builds a landslide warning model by comprehensively monitoring and analyzing the plurality of factors. According to analysis, the landslide displacement and the volume water content of the sliding body have obvious space-time response relation, and the abrupt displacement of the landslide is related to the rapid change of the volume water content of the deep part of the sliding body. The invention realizes the comprehensive monitoring and analysis of three parameters based on the characteristics that the volume water content is increased, the sliding body weight is increased, the unsaturated strength is reduced, the sliding force is increased, the anti-sliding force is reduced and the stability is reduced, dynamically adjusts the sampling frequency of the side slope radar according to the water content and the parameters of the inclination sensor, constructs a landslide early warning model and realizes the comprehensive monitoring and early warning of the three parameters.
Table 1 parameter dynamic adjustment table
| Water content a | Slope radar sampling rate |
| a≤10 | For 10 |
| 10＜a≤20 | 8 minutes |
| 20＜a≤30 | For 5 minutes |
| 30＜a≤40 | 2 minutes |
In another specific embodiment, referring to fig. 4, the implementation steps of the method for monitoring and early warning the safety of the side slope of the rescue site of the water-bearing soil pressure personnel are as follows:
in order to ensure low-power consumption comprehensive monitoring, the system adopts a plurality of measuring unit linkage monitoring schemes, in a normal monitoring state, a triaxial inclination angle measuring unit and a water content measuring unit can be set to be sampled for 1 time in 1 minute, a millimeter wave measuring unit with higher power consumption can be set to be sampled for one time in 10 minutes, when the water content measuring unit monitors that the water content rises rapidly, the system automatically improves the sampling frequency of the millimeter wave measuring unit, carries out encryption monitoring on a rescue site, simultaneously triggers an audible and visual alarm, sends out a prompting signal of abnormal water content, reminds site personnel of safety, and ensures the safety of rescue workers; meanwhile, after the triaxial inclination angle measuring unit exceeds a threshold value, the equipment immediately uploads the inclination angle sensor data, automatically improves the sampling frequency of the millimeter wave measuring unit, simultaneously triggers an audible and visual alarm, and sends out an abnormal inclination angle prompt signal to remind on-site rescue workers of safety; when the millimeter wave measuring unit monitors large-area rapid deformation, the red early warning is immediately started, and the on-site rescue workers are evacuated. Through the linkage monitoring of three kinds of measuring units, realized monitoring facilities's low-power consumption work promptly, under the condition that does not have external power supply, can continuous operation 7 days, effectively ensure the rescue personnel safety in the gold rescue time, increased the monitoring variable again simultaneously, combined the area early warning through "three parameters", improved early warning reliability. The method comprises the following steps:
firstly, after field layout is completed, a synchronous acquisition command is issued through monitoring early warning software, equipment starts to work, and multi-parameter monitoring data are synchronously acquired;
secondly, setting early warning thresholds of different parameters according to the actual conditions of the site, wherein the early warning thresholds mainly comprise a water content early warning threshold, an inclination angle early warning threshold and a radar data threshold;
thirdly, analyzing each parameter monitoring data, fusing the multi-source monitoring data, dynamically adjusting the working parameters of the system according to an early warning model, wherein the adjustment method is shown in a table 1, and when the water content and the inclination angle exceed threshold values, a field audible and visual alarm sends out corresponding prompts to remind field personnel to strengthen safety protection; meanwhile, the system dynamically adjusts the sampling frequency of the side slope radar according to the water content value and a preset model;
and fourthly, comparing the maximum value of the deformation result monitored by the radar with a radar early warning threshold value, judging whether the deformation result is larger than the threshold value, returning to the previous step, continuing to monitor in real time, immediately calculating the area larger than the threshold value if the deformation value is larger than the early warning threshold value, and calculating the area according to the pixel point of a millimeter wave measuring unit by an area calculating method, wherein the resolution of the millimeter wave measuring unit is 0.4mx 33.14mrad in the embodiment, and the radar azimuth resolution is 0.4mx 8m in the position of 1000 meters, namely the area represented by 1 pixel point is 0.4mx 8m.
Fifthly, judging whether the area larger than the threshold value is larger than the threshold value, if not, not needing to be pre-warned, and if so, immediately searching the area according to the pre-warning value and the area, finding out the pixel point larger than the radar pre-warning value, determining a dangerous area according to the pixel point, and further judging the pre-warning level; determining a dangerous area according to the pixel points, wherein the dangerous area is determined by the area calculation method in the fourth step;
step six, if a certain level of early warning value is reached, the early warning value and the early warning area are transmitted, a specific early warning position is visually displayed through a radar deformation cloud picture in a DEM model of an early warning software site according to the early warning value and the early warning area, and different early warning values or deformation values can be identified through different colors, for example, the deeper the color is, the larger the deformation value is represented;
and seventhly, when the displacement data accords with the radar displacement-area-duration early warning, the system can simultaneously call the water content data, the inclination angle data and the displacement data for analysis, and comprehensive early warning is carried out through a three-parameter combined early warning model.
In yet another embodiment, the present solution may be implemented by means of an apparatus, which may include corresponding modules performing each or several steps of the above-described embodiments. Thus, each step or several steps of the various embodiments described above may be performed by a respective module, and the electronic device may include one or more of these modules. A module may be one or more hardware modules specifically configured to perform the respective steps, or be implemented by a processor configured to perform the respective steps, or be stored within a computer-readable medium for implementation by a processor, or be implemented by some combination.
The device may be implemented using a bus architecture. The bus architecture may include any number of interconnecting buses and bridges depending on the specific application of the hardware and the overall design constraints. The bus connects together various circuits including one or more processors, memories, and/or hardware modules. The bus may also connect various other circuits such as peripherals, voltage regulators, power management circuits, external antennas, and the like.
Any process or method descriptions in flow charts or otherwise described herein may be understood as representing modules, segments, or portions of code which include one or more executable instructions for implementing specific logical functions or steps of the process, and further implementations are included within the scope of the preferred embodiment of the present invention in which functions may be executed out of order from that shown or discussed, including substantially concurrently or in reverse order, depending on the functionality involved, as would be understood by those reasonably skilled in the art of the embodiment of the present invention. The processor performs the various methods and processes described above. For example, method embodiments in the present solution may be implemented as a software program tangibly embodied on a machine-readable medium, such as a memory. In some embodiments, part or all of the software program may be loaded and/or installed via memory and/or a communication interface. One or more of the steps of the methods described above may be performed when a software program is loaded into memory and executed by a processor. Alternatively, in other embodiments, the processor may be configured to perform one of the methods described above in any other suitable manner (e.g., by means of firmware).
Logic and/or steps represented in the flowcharts or otherwise described herein may be embodied in any readable storage medium for use by or in connection with an instruction execution system, apparatus, or device, such as a computer-based system, processor-containing system, or other system that can fetch the instructions from the instruction execution system, apparatus, or device and execute the instructions.
Those skilled in the art will appreciate that implementing all or part of the above-described methods in accordance with the embodiments may be accomplished by way of a computer program stored on a computer readable storage medium, which when executed may comprise the steps of the embodiments of the methods described above. The storage medium may be a magnetic disk, an optical disk, a Read-On-y Memory (ROM), a random access Memory (Random Access Memory, RAM), or the like.
The foregoing is merely illustrative of the present invention, and the present invention is not limited thereto, and any changes or substitutions easily contemplated by those skilled in the art within the scope of the present invention should be included in the present invention. Therefore, the protection scope of the invention is subject to the protection scope of the claims.
Claims (10)
1. The device is characterized by comprising an integrated installation upright rod, a millimeter wave measuring unit, a water content measuring unit, a triaxial inclination measuring unit, a temperature and humidity sensor, a system control unit, STM32 signal processing and control boards, a 5G data transmission module, an Lora module and an audible and visual alarm; the integrated installation vertical rod comprises a lower part and an upper telescopic part, the integrated installation vertical rod is of a telescopic structure, and the upper telescopic part can be sleeved in the lower part of the integrated installation vertical rod so as to realize telescopic adjustment with variable length;
the water content measuring unit, the triaxial inclination measuring unit, the STM32 signal processing and the control panel are integrated in the integrated mounting upright rod;
the millimeter wave measuring unit is arranged at the top end of the integrated mounting upright rod; the water content measuring unit is arranged in the lower part of the integrated mounting upright rod;
the top of integrated installation pole setting lower part is provided with stable disc.
2. The device according to claim 1, wherein the millimeter wave measuring unit performs data interaction with the water content measuring unit and the triaxial inclination measuring unit respectively; the system control unit is respectively connected with the millimeter wave measuring unit, the water content measuring unit and the triaxial dip angle measuring unit;
the system control unit is connected with the 5G data transmission module and the Lora module;
the 4G output module is connected with a cloud server; the Lora module is connected with the audible and visual annunciator.
3. The device according to claim 1, characterized in that the device is arranged in the following manner:
step one, determining the arrangement points of the device based on the positions of the buried pressure personnel;
step two, determining the number of the equipment based on the positions of the buried pressure personnel and the peripheral slope conditions;
thirdly, arranging at least 2 devices on one side, close to the landslide body, of the position of the buried pressure personnel;
step four, at least 2 devices are arranged on one side, far away from the landslide body, of the position of the buried pressure personnel, wherein one device monitors the deformation condition of the whole side slope, and the other device monitors the deformation condition of the side slope around the excavation area;
and fifthly, starting the laid equipment for monitoring, analyzing the monitoring result, and determining whether to trigger early warning or not based on the monitoring result.
4. The apparatus of claim 1, wherein the millimeter wave measurement unit comprises four cascaded monolithic frequency modulated continuous wave radar transceivers;
after ADC data received by the single-chip frequency modulation continuous wave radar transceiver is calibrated in a frequency domain and a time domain, a radar image is generated after distance FFT, azimuth FFT and imaging focusing are carried out;
the radar image is subjected to image registration, interference patterns and coherence patterns are generated, and then phase unwrapping and atmospheric correction are carried out to obtain deformation patterns for monitoring.
5. The device according to claim 1, wherein the water content measuring unit is connected with the system control unit through a serial port in an STM32 signal processing and control board;
the water content measuring unit comprises 8 water content monitoring units, wherein each water content monitoring unit comprises a ring electrode pair, a voltage-controlled oscillator, a frequency dividing circuit, a voltage comparator and a counter;
the equivalent capacitor formed by the electrode pair and the water-containing soil property outputs different capacitance values in the soil property with different water contents, resonates with the voltage-controlled oscillator, then is converted into a square wave signal through a frequency dividing circuit, and the square wave signal is converted into a frequency signal which is convenient to collect through a voltage comparator and is output.
6. The device according to claim 1, wherein the triaxial inclination measuring unit is connected with the system control unit through a serial port in an STM32 signal processing and control board;
the triaxial inclination angle measuring unit comprises a triaxial MEMS acceleration sensor and a magnetic field sensor.
7. The apparatus of claim 1, wherein the system control unit comprises an FPGA controller, a DSP controller, a data buffer, a serial transceiver;
the FPGA controller receives data of the triaxial inclination angle measuring unit, the water content measuring unit and the temperature and humidity sensor through the serial port transceiver, and performs data threshold comparison;
and the DSP controller receives the data of the millimeter wave measuring unit and forms a deformation graph after processing.
8. The apparatus of claim 7, wherein the data threshold comparison comprises: comparing the monitoring results of the triaxial inclination angle measuring unit and the water content measuring unit through a preset threshold value, immediately sending out inclination angle abnormality prompt when the monitoring result of the triaxial inclination angle measuring unit is larger than an inclination angle early warning threshold value, and improving the radar sampling frequency; when the water content monitoring result is larger than the water content early warning threshold value, immediately sending out a water content abnormality prompt, and improving the radar sampling frequency.
9. The apparatus of claim 7, wherein the serial transceiver is in data interaction with the STM32 signal processing and control board.
10. The method for monitoring and early warning the safety of the side slope of the water-containing soil buried personnel rescue site is characterized by comprising the following steps:
s1, starting data acquisition of monitoring equipment which is arranged on site, and synchronously acquiring multi-parameter monitoring data;
s2, setting early warning thresholds of different parameters, including a water content early warning threshold, an inclination angle early warning threshold and a radar data threshold;
s3, when the water content and the inclination angle respectively exceed the threshold values, a first alarm prompt is sent out, and the sampling frequency of the side slope radar is dynamically adjusted;
s4, comparing the maximum value of the radar monitoring result with a radar early warning threshold value, returning to S3 if the maximum value is smaller than or equal to the radar early warning threshold value, otherwise, calculating a corresponding area;
s5, judging whether the area is larger than an area threshold value, if so, returning to S3, otherwise, determining an early warning level according to the area and the early warning value;
s6, after the early warning level is determined, leading in an early warning value and an early warning area, and marking the early warning position and the early warning level on a display interface;
and S7, if the early warning area is searched, early warning recording is carried out and reporting is carried out.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310083702.XA CN116400348A (en) | 2023-02-08 | 2023-02-08 | Device and method for monitoring and early warning safety of water-containing soil buried personnel rescue site slope |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310083702.XA CN116400348A (en) | 2023-02-08 | 2023-02-08 | Device and method for monitoring and early warning safety of water-containing soil buried personnel rescue site slope |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116400348A true CN116400348A (en) | 2023-07-07 |
Family
ID=87006399
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310083702.XA Pending CN116400348A (en) | 2023-02-08 | 2023-02-08 | Device and method for monitoring and early warning safety of water-containing soil buried personnel rescue site slope |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116400348A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117423224A (en) * | 2023-09-27 | 2024-01-19 | 深圳市地质环境研究院有限公司 | Data acquisition method of slope monitoring internet of things equipment |
-
2023
- 2023-02-08 CN CN202310083702.XA patent/CN116400348A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117423224A (en) * | 2023-09-27 | 2024-01-19 | 深圳市地质环境研究院有限公司 | Data acquisition method of slope monitoring internet of things equipment |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106205061B (en) | A kind of geological hazards prediction system | |
| CN102590795B (en) | Microwave scattering property test system based on vector network analyzer | |
| EP1523738B1 (en) | System and method for territory thermal monitoring | |
| CN110645901B (en) | Application method of building engineering dynamic monitoring system | |
| CN108519045A (en) | A kind of Big Dipper precision deformation monitoring and early warning system | |
| CN108981825A (en) | A kind of transmission tower monitoring device based on NB-loT, system and method | |
| CN108387892A (en) | Structural healthy monitoring system based on fmcw radar and method | |
| CN109489541A (en) | Railway slope deformation monitoring and analysis system based on Beidou measuring technique | |
| CN116400348A (en) | Device and method for monitoring and early warning safety of water-containing soil buried personnel rescue site slope | |
| CN108168713B (en) | The anti-mountain fire system of transmission line of electricity infrared thermal imaging | |
| CN107277847B (en) | Antenna attitude measurement system and method based on NB-IoT transmission mode | |
| CN105467423A (en) | Accelerator beam position diagnosis system and accelerator beam position diagnosis method based on eight-octant probe distribution | |
| CN110286382A (en) | A kind of monitoring of slope of highway safe and intelligent and prior-warning device based on depth camera | |
| CN113917458A (en) | Automatic monitoring method for building structure displacement in fire | |
| CN114268900A (en) | Indoor positioning method and system | |
| CN103548064A (en) | Monitoring system | |
| CN109655006A (en) | A kind of tunnel subsidence convergence automatic measurement system | |
| CN205723903U (en) | Antenna and attitude data acquisition device, monitoring system | |
| CN209894170U (en) | Inclination monitor | |
| CN115407378B (en) | High-voltage electric field operation risk early warning method and device based on RTK high-precision positioning | |
| CN207557474U (en) | A kind of hand-held automatic lifting three-dimensional laser rangefinder | |
| CN107144830B (en) | Outdoor search and rescue positioning device and positioning method | |
| CN209623610U (en) | Building displacement monitors system under a kind of fire based on big-dipper satellite | |
| CN220018458U (en) | Slope stability monitoring device | |
| CN208907807U (en) | A kind of verticality monitoring device |
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 |