CN211555107U - Road collapse wireless monitoring device and system thereof - Google Patents
Road collapse wireless monitoring device and system thereof Download PDFInfo
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- CN211555107U CN211555107U CN202020262066.9U CN202020262066U CN211555107U CN 211555107 U CN211555107 U CN 211555107U CN 202020262066 U CN202020262066 U CN 202020262066U CN 211555107 U CN211555107 U CN 211555107U
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Abstract
The application provides a wireless monitoring devices and system that sinks on road installs in road table internal portion, includes: a wireless monitoring body comprising: the system comprises a processor, a communication module and a power supply unit; a detection hole with a downward opening is formed in the wireless monitoring main body, and a magnetic resistance sensor is arranged in the detection hole; each magneto-resistive sensor is electrically connected with the processor; the magnetic rod and the detection rod are arranged below the wireless monitoring main body; the upper end of the magnetic rod is inserted into the detection hole; the lower end of the detection rod is connected with the detection rod buried in the soil body, so that when the detection rod is displaced due to the change of the soil body, the magnetic rod is driven to displace in the detection hole relative to each magnetoresistive sensor, and the magnetoresistive sensors generate electric signals. The method and the device can monitor the road collapse caused by the cavity or lateral displacement of the soil body at the lower part of the road in real time, and can send early warnings of different levels to the outside in combination with the displacement degree; the device has the advantages of simple equipment, low power consumption, continuous and long-time operation after installation, and convenient management and monitoring.
Description
Technical Field
The application relates to the technical field of road collapse monitoring, in particular to a road collapse wireless monitoring device and a system thereof.
Background
The road collapse is a geological phenomenon that a road sinks downwards under the action of natural or artificial factors and forms collapse pits (holes) on the ground. The urban road collapse increases the risks of traffic accidents and casualties, and causes the problems of foundation sinking of nearby buildings, house cracking, underground pipeline damage, urban flood, storm surge disaster aggravation and the like.
Under the background of rapid urban expansion, road collapse accidents are frequently generated, and serious casualties and loss cases caused by road surface collapse occur occasionally. The reasons for road collapse are complex, and according to the current statistics and analysis, the reasons for road collapse accidents can be summarized in the following points:
1. natural factors: under certain geological conditions and weather conditions, when the pores of the loose sediments under the ground are in a saturated state, the friction force among the sand gravel is reduced to some extent, and the road is easy to collapse; the existing statistics show that the road collapse accidents in rainy season account for 41 percent of the total number of the accidents.
2. Artificial and artificially induced natural effects: important causes of road collapse accidents; through the analysis of multiple road collapse cases in China, the human factors account for more than 60% of the total number of related accidents.
The human factors for specifically analyzing the road collapse include:
road load is overweight: the original design load can not meet the actual condition of the current traffic load, so that the road surface bearing capacity is insufficient, and the road surface collapse is easy to form;
secondly, the underground pipeline is aged, cracked, seeped and leaked: the soil foundation is washed for a long time, so that the soil body of the foundation is lost, and the ground subsidence is caused;
thirdly, large amount of underground water exploitation: many rock stratum gaps caused by the lack of underground water can not be supplemented in time, the stratum structure is damaged, the compression resistance and bearing capacity of the foundation are weakened, and therefore the pavement collapse is formed;
fourthly, the engineering construction is improper: the underground space can be greatly utilized in the construction of large underground buildings such as subways and the like; the pressure of the ground pavement is reduced, and meanwhile, the highway foundation can be damaged, the pavement pressure resistance is reduced, and the pavement collapse is accelerated; similarly, the large amount of high-rise buildings cause the adjacent soil to be loose, the pressure between pipelines to be increased, and even the underground soil layer to be displaced or deformed greatly, and the soil body is extruded and increased to a certain degree to possibly cause the road surface to collapse.
Although natural disasters such as weather abnormal change, geological structure change and the like are factors for urban road collapse, the road collapse prevention and control work has complexity, difficulty and long-term property. With the acceleration of the urbanization process, how to make road management and protection is the key point of road collapse prevention and control while developing and utilizing underground space.
The monitoring of road collapse is currently dependent on manual detection at home and abroad. Usually, before the road collapses, soil cavities appear at the lower part of the road surface structure; or when the road slips laterally, if the supporting force of the road surface is insufficient, the road surface can collapse; the existing technical means mainly adopt the detection of hidden cavity hidden danger under a road in advance; and (4) preventing and early warning are realized by detecting the cavity, and measures are taken to remove risks. In order to find out soil cavities in time, the urban key road sections and disaster-prone road sections need to be subjected to multi-batch, periodic and preventive general investigation and detection for a long time and at regular intervals, so that the occurrence and development of disasters can be controlled.
At the present stage, the underground cavities of urban roads are explored by a plurality of methods, such as a radar detection method, a high-density resistivity method, a transient surface wave method, a micro-motion exploration method, a seismic mapping method, a transient electromagnetic method and the like; the ground penetrating radar has the characteristics of convenience in field implementation, external environment interference resistance, rapidness and convenience in operation, high relative detection efficiency, low cost and the like, and is applied to multiple cities.
However, there are some disadvantages to the artificial ground detection method, including:
(1) the system is not real-time, and is more difficult to comprehensively and simultaneously check;
(2) the operation efficiency is low, the technical application threshold is high, the difficulty is high, and the treatment is required to be carried out by professional personnel;
(3) the workload is large, and a large amount of manpower and material resources are consumed;
(4) the road diseases caused by slippage between the road surface and the soil body cannot be detected;
(5) the test data amount is small, and the road health condition is difficult to be comprehensively evaluated.
The prior art is difficult to comprehensively realize monitoring and early warning of road collapse, and a road manager faces the difficult problems of slow detection and incapability of detecting.
SUMMERY OF THE UTILITY MODEL
In view of the above-mentioned shortcomings of the prior art, it is an object of the present application to provide a wireless monitoring device for road collapse, and a system thereof, to solve at least one problem of the prior art.
In order to achieve the above objects and other related objects, the present application provides a wireless monitoring device for road collapse, which is installed inside a road surface body, the device comprising: a wireless monitoring body comprising: the system comprises a processor, a communication module and a power supply unit; a detection hole with a downward opening is formed in the wireless monitoring main body, and one or more magnetoresistive sensors are arranged in the detection hole; each magneto-resistive sensor is electrically connected with the processor; the magnetic rod and the detection rod are arranged below the wireless monitoring main body; the upper end of the magnetic rod is inserted into the detection hole; the lower end of the magnetic rod is connected with a detection rod buried in soil below a road hardened layer, so that when the detection rod is displaced due to change of the soil, the magnetic rod is driven to be displaced in the detection hole relative to the magnetic resistance sensors, and the magnetic resistance sensors generate electric signals.
In an embodiment of the present application, the magnetic rod is further configured with a rebound box and a rebound device unit to form a rebound magnetic rod box; the resilience magnetic bar box is arranged below the wireless monitoring main body; the upper end of the magnetic rod is inserted into the detection hole; the lower end of the magnetic rod is fixed at the top end of the rebounding device; the bottom end of the springback device is arranged at the bottom of the box body; the top end of a central stress shaft of the rebounding device is fixed at the top end of the rebounding device; the bottom end of the central stress shaft of the rebounding device extends out of the hole in the bottom of the box body, and a connecting piece is arranged at the bottom end of the rebounding device and used for being connected with the detection rod.
In an embodiment of the present application, the detection rod is further configured with a connection cable; the upper end of the connecting cable is connected with the bottom end of the central stress shaft through the connecting piece; the lower end of the connecting cable is fixedly connected to the detection rod; the detection rod is buried in a soil body, and the connection cable is in a natural straightening state.
In an embodiment of the present application, a first magnetoresistive sensor located at the top of the detection hole and a second magnetoresistive sensor located at the side of the detection hole are disposed in the detection hole; when the magnetic bar, the first magnetic resistance sensor and the second magnetic resistance sensor positioned at the side part of the detection hole are in different relative positions, different electric signals are formed so as to trigger the wireless monitoring main body to respond to different monitoring states.
In an embodiment of the present application, when the magnetic rod, the first magnetic resistance sensor, and the second magnetic resistance sensor located at the side of the detection hole are in different relative positions, different electrical signals are formed to trigger the wireless monitoring main body to respond to different monitoring states, which includes any one or more of the following combinations: at the beginning and when the external tension is not applied, no electric signal is generated, and the wireless monitoring main body is in a dormant state at the moment; when external tension is applied, the magnetic rod moves downwards, the first magnetic resistance sensor induces the magnetic rod to move away from the magnetic rod to generate a first electric signal, and the wireless monitoring main body is in an activated state; when the magnetic rod moves downwards to the opposite position of the second magnetic resistance sensor under the condition of external tension, the second magnetic resistance sensor induces the magnetic rod to pass through so as to generate a second electric signal, and at the moment, the wireless monitoring main body is in an early warning state; when the magnetic rod moves out of the relative position of the second magnetic resistance sensor under the condition of external tension, the second magnetic resistance sensor cannot sense the magnetic rod to generate a reset electric signal, and at the moment, the wireless monitoring main body is in an alarm state.
In an embodiment of the present application, the communication module is configured to be communicatively connected to an external device; when the wireless monitoring main body is in an early warning state or an alarming state, the communication module sends corresponding early warning information or alarming information to a monitoring platform in appointed communication connection.
In an embodiment of the present application, the communication module further includes a communication antenna; the communication module adopts an NB-IOT communication mode.
In an embodiment of the present application, the wireless monitoring body is manufactured by a fully-sealed colloid process; and/or the wireless monitoring main body adopts a minimally invasive installation process and can be directly installed inside the road surface body.
In an embodiment of the present application, the wireless monitoring main body has a voltage detection device to monitor the electric quantity and the working state, so as to facilitate the management and maintenance of the device; and/or, the wireless monitoring main body is provided with a temperature detection device to detect the road temperature.
To achieve the above and other related objects, the present application provides a wireless monitoring system for road collapse, the system comprising: a plurality of wireless monitoring devices for road collapse as described above; and the road collapse wireless monitoring devices are arranged on the target road in a distributed manner.
To sum up, the wireless monitoring devices and the system thereof of a road subsidence of this application install in the road table internal portion, the device includes: a wireless monitoring body comprising: the system comprises a processor, a communication module and a power supply unit; a detection hole with a downward opening is formed in the wireless monitoring main body, and one or more magnetoresistive sensors are arranged in the detection hole; each magneto-resistive sensor is electrically connected with the processor; the magnetic rod and the detection rod are arranged below the wireless monitoring main body; the upper end of the magnetic rod is inserted into the detection hole; the lower end of the magnetic rod is connected with a detection rod buried in soil below a road hardened layer, so that when the detection rod is displaced due to change of the soil, the magnetic rod is driven to be displaced in the detection hole relative to the magnetic resistance sensors, and the magnetic resistance sensors generate electric signals.
Has the following beneficial effects:
the method can monitor the road collapse caused by the cavity or lateral displacement of the soil body at the lower part of the road in real time, and can send early warnings of different levels to the outside in combination with the displacement degree. The device has the advantages of simple equipment, low power consumption, continuous and long-time operation after installation, and convenient management and monitoring.
Drawings
Fig. 1 is a schematic structural diagram of a road collapse wireless monitoring device in an embodiment of the present application.
Fig. 2 is a cross-sectional view of a wireless monitoring body according to an embodiment of the present application.
Fig. 3 is a schematic view illustrating a scenario of a wireless road collapse monitoring system according to an embodiment of the present application.
Detailed Description
The following description of the embodiments of the present application is provided by way of specific examples, and other advantages and effects of the present application will be readily apparent to those skilled in the art from the disclosure herein. The present application is capable of other and different embodiments and its several details are capable of modifications and/or changes in various respects, all without departing from the spirit of the present application. It is to be noted that the features in the following embodiments and examples may be combined with each other without conflict.
It should be noted that the drawings provided in the following embodiments are only for illustrating the basic idea of the present application, and the drawings only show the components related to the present application and are not drawn according to the number, shape and size of the components in actual implementation, and the type, number and proportion of the components in actual implementation may be changed freely, and the layout of the components may be more complicated.
In view of the above-mentioned problem, this application provides a wireless monitoring devices and system that road sinks, to the difficult problem of road monitoring and early warning of sinking, a new method adopts wicresoft's installation technique, and a plurality of wireless monitoring devices of distributing type installation on the road, can real-time supervision road because of the soil body slip or the displacement change between the road surface that the soil body cavity that forms caused and the road support soil body, realize monitoring and the early warning that the road sinks through the judgement of displacement change.
Fig. 1 is a schematic structural diagram of a road collapse wireless monitoring device in an embodiment of the present application. As shown, the apparatus comprises: the wireless monitoring device comprises a wireless monitoring body 100, a magnetic bar 220 arranged below the wireless monitoring body 100, and a detection bar 300.
Specifically, the wireless monitoring device for road collapse is installed inside a road surface body. The road surface body internal structure can be divided into a road surface, a road hardening layer and a soil body. The wireless monitoring main part is mainly installed in the road sclerosis layer, preferably, the top of wireless monitoring main part is on a parallel with the road surface or inlays in the road surface. The detection rod 300 is mainly installed on the soil body.
The wireless monitoring main body 100 includes: processor 110, communication module 120, power supply unit 130; a detection hole 140 with a downward opening is formed in the wireless monitoring main body, and one or more magnetoresistive sensors 150 are arranged in the detection hole 140; each of the magnetoresistive sensors 150 is electrically connected to the processor 110. Referring to fig. 2, a cross-sectional view of the wireless monitoring body 100 is shown.
The magnetoresistive sensor 150 (or variable magnetoresistive sensor) is one type of inductive sensor. For example, the present application may select a Tunneling magnetoresistive Sensor (TMR-Sensor-magnetoresistive Sensor) switch Sensor product, including both bipolar and all-pole digital output TMR switches, that provides a magnetically triggered digital switch with high sensitivity, high frequency response, ultra-low power consumption, and high accuracy. The TMR switch sensor integrates a high-precision push-pull half-bridge TMR magnetic sensor and a CMOS integrated circuit, comprises a TMR voltage generator, a comparator, a Schmitt trigger and a CMOS output circuit, and can convert a changed magnetic field signal into a digital voltage signal for output. TMR switch sensors provide temperature compensated power through an internal voltage regulator and allow a wide operating voltage range. TMR switch sensors operate at low voltages, very high response frequencies, microampere supply currents, wide operating temperature ranges, and high ESD withstand voltages are ideal choices for many switching applications. When more precise measurement is required, a magnetoresistive sensor for outputting analog signals is selected, can be used for measuring displacement and size, and can also be used for measuring other parameters of force, tension, pressure, differential pressure, strain, rotation speed, acceleration and the like which can be converted into displacement; its sensitivity high resolution is large, it can measure 0.01um or even smaller mechanical displacement change, it can sense small 0.1 micro angle change, the output signal of the sensor is strong, the voltage sensitivity can reach hundreds millivolt per millimeter, so it is beneficial to signal transmission and amplification.
The magnetoresistive sensor 150 has a simple structure, no moving electrical contact point during operation, and a long service life.
A magnetic bar 220 and a detection bar 300 disposed below the wireless monitoring body 100.
Specifically, the upper end of the magnetic rod 220 is inserted into the detection hole 140, so that the magnetic sensors 150 are arranged around the magnetic rod 220 to sense the magnetic sensors 150 through the change of the magnetic rod 220, and further, the lower end of the magnetic rod 220 is connected to the detection rod 300 buried in the soil below the hardened road layer, so that when the detection rod 300 is displaced due to the change of the soil, the magnetic rod 220 is driven to displace in the detection hole 140 relative to the magnetic sensors 150, and the magnetic sensors 150 generate electrical signals.
In this embodiment, the displacement caused by soil change includes deep soil displacement, horizontal displacement, vertical displacement, and the like.
The detection rod 300 is preferably a detection rod 300 having a certain weight, such as a steel rod or the like.
In an embodiment of the present application, the magnetic rod 220 is further configured with a rebound box 210 and a rebound device 230 to form a rebound magnetic rod box 200; the resilient magnetic rod box 200 is disposed below the wireless monitoring body 100. For example, the center of the resilient magnetic rod case 200 is aligned with the center of the detection hole 140 so that the magnetic rod 220 can be inserted into the detection hole 140 without contact, and then the resilient magnetic rod case 200 is fixed directly below the wireless monitoring body 100 by screws.
The upper end of the magnetic rod 220 is inserted into the detection hole 140; the lower end of the magnetic rod 220 is fixed to the top end of the rebounding device 230. The bottom end of the rebounding device 230 is arranged at the bottom of the box body 210; the top end of the central force-bearing shaft 231 of the rebounding device 230 is fixed on the top end of the rebounding device 230; the bottom end of the central force-bearing shaft 231 of the resilient means 230 extends from the hole at the bottom of the cartridge 210, and is provided with a connecting member 240 at the bottom end for connecting the detection rod 300.
It should be noted that, in the present application, the connecting member 240 disposed at the bottom end of the central force-bearing shaft 231 preferably abuts against the bottom of the resilient magnetic rod box 200 when the resilient device 230 is in the initial state, so that the central force-bearing shaft 231 is completely located in the resilient magnetic rod box 200, and the spring 232 is in a natural tension-free state. Through the arrangement, when the wireless monitoring main body 100 receives strong pressure or impact on a road surface, the wireless monitoring main body 100 and the rebound type magnetic rod box 200 can still keep relatively static, the relative position of the magnetic rod 220 relative to the magnetic resistance sensor 150 is not caused, and the measurement error is reduced.
For example, the resilient means 230 may be a spring 232 disposed in the case 210, a stop 233 disposed at an upper end of the spring 232, the lower end of the magnetic rod 220 is fixed to an upper surface of the stop 233, a central force-bearing shaft 231 is further fixedly connected to a lower surface of the spring 232, a lower bottom end of the central force-bearing shaft 231 extends out of a hole at the bottom of the case 210, and a connecting member 240 is disposed at a bottom end of the central force-bearing shaft for connecting the detection rod 300. When the central stressed shaft 231 is subjected to a downward pulling force generated by the deformation (translation or sedimentation) of the soil body of the detection rod 300, the central stressed shaft 231 drives the blocking piece 233 to move downward, and the blocking piece 233 drives the magnetic rod 220 to move downward, so that the magnetic resistance sensor 150 can sense the downward pulling force.
It should be noted that, in the present application, the spring 232 can keep the blocking plate 233 and the magnetic rod 220 thereon stable when the central force-bearing shaft 231 is not under force, and can ensure that the blocking plate 233 and the magnetic rod 220 thereon move smoothly during the force-bearing process. Because the sensing sensitivity of the magnetic resistance sensor 150 is high, the magnetic rod 220 in the magnetic resistance sensor 150 can be ensured to be displaced smoothly through the spring 232, and the service life and the accuracy of the detection device are greatly improved due to the capability of recovering the specific displacement.
In an embodiment of the present invention, the detecting rod 300 is further configured with a connecting cable 310. The upper end of the connection cable 310 is connected with the bottom end of the central force-bearing shaft 231 through the connection member 240; the lower end of the connection cable 310 is fixedly connected to the detection rod 300; the detection rod 300 is buried in the soil body and makes the connection cable 310 in a natural straightened state.
In this embodiment, the detection rod 300 is buried in the soil, and at the initial moment when the detection rod 300 is fixed in the soil, the connection cable 310 is required to be in a natural straightening state, and the pulling force applied to the connection cable 310 is smaller than the action point of the spring 232 of the resilient magnetic rod box 200. The technical requirements of the detection bar 300 for configuring the connecting cable 310 are as follows: small elastic change, high resistance to high temp and corrosion. Typically steel or nylon wire may be chosen. In addition, the length of the connecting cable 310 is selected to be larger than the thickness of the hardened layer of the road, so as to ensure that the detection rod 300 is completely located in the soil body and can move in all directions. The connection line is connected to the connection member of the resilient magnetic rod case 200 through the connection member. And the connection cable 310 is basically laid on a hardened road layer, which is made of a building material laid manually and is not easily deformed. Soil body produces deformation more easily than road sclerosis layer. Therefore, this application wireless monitoring devices that collapses of road can focus on the deformation monitoring of the soil body, and the early warning degree of accuracy that the road collapsed is higher. In addition, this application the road that the device can not only monitor road lower part soil body cavity and cause sinks, also can perhaps the lower part soil body has taken place the road that lateral displacement caused and sinks.
When the detection rod 300 laterally moves or downwardly slides due to soil sliding or a soil cavity formed on the road, the detection rod 300 drives the central receiving shaft inside the resilient magnetic rod box 200 to move down through the connection cable 310 and the connection part, and further drives the magnetic rod 220 to move down. Therefore, the magnetic resistance sensor 150 in the wireless monitoring body 100 senses the road collapse, and then the processor 110 and the communicator in the wireless monitoring body 100 can send out a road collapse early warning or alarm signal to a monitoring platform or related departments which are externally connected.
Preferably, a first magnetic sensor 150a is disposed at the top of the detection hole 140, and a second magnetic sensor 150b is disposed at the side of the detection hole 140. For example, a first magnetoresistive sensor 150a is disposed at the top of the sensing hole 140, and two opposite second magnetoresistive sensors 150b are disposed at the sides of the sensing hole 140.
When the magnetic rod 220 and the first magnetic sensor 150a and the second magnetic sensor 150b located at the side of the detection hole 140 have different relative positions, different electrical signal changes can be formed to trigger the wireless monitoring body 100 to respond to different monitoring states.
Specifically, any one or more of the following combinations are included:
(1) at the beginning and when the external tension is not applied, no electric signal changes, and the wireless monitoring main body 100 is in a dormant state.
Namely, the road collapse wireless monitoring device is set to be in a dormant state when being shipped out of a factory, and the road collapse wireless monitoring device is maintained to be in the dormant state by ensuring that the magnetic bar 220 is not moved when being installed. And after the device is put into use, the device is still in a dormant state under the condition of not being subjected to external pulling force.
In this embodiment, when the device is initially and is not under external tension, there is no change in the electrical signal, and the wireless monitoring main body 100 is in a sleep state. In the sleep state, the wireless monitoring main body 100, such as the processor 110 and the communication module 120, may be in the non-powered or sleep state all the time, so that the power consumption is greatly reduced, and the service life is prolonged.
The device is installed inside the road surface body, and the magnetic resistance sensor 150 is sensitive, so that the device is not taken out after installation, and the power supply unit 130 in the wireless monitoring main body 100 is provided with a disposable battery. Therefore, it is extremely important to reduce power consumption inside the device.
It should be noted that unless the soil body is subjected to special conditions such as earthquake, underground pipeline explosion, tunnel excavation and the like, the soil body changes usually only slightly in displacement within a long time. Therefore, according to the collapse danger degree possibly caused by the displacement change of the soil body, the downward displacement distance of the magnetic rod 220 is correspondingly fed back to be in different states.
(2) When an external pulling force is applied, the magnetic rod 220 moves downwards, the first magnetic resistance sensor 150a senses that the magnetic rod 220 is far away from the magnetic rod to generate a first electric signal, and the wireless monitoring main body 100 is in an activated state.
It should be noted that, because the connection cable 310 is required to be in a natural straightening state when the detection rod 300 is arranged, and the connection cable 310 is almost completely arranged on the hardened road layer, the soil body is more easily deformed than the hardened road layer. Therefore, no matter the soil body is deformed due to sinking and translation, the connection cable 310 can be pulled downwards due to the displacement change of the detection rod 300, and further, the magnetic rod 220 is driven to displace downwards. Therefore, this application the road that the device can not only monitor road lower part soil body cavity and cause sinks, also can perhaps the lower part soil body has taken place the road that lateral displacement caused and sinks.
Initially, the relative positions of the magnetic rod 220 and the respective magnetoresistive sensors 150 are balanced, and the magnetoresistive sensors 150 sense and generate corresponding first electrical signals by changing the relative distances or relative positions of the magnetic rod 220 and the respective magnetoresistive sensors 150.
The electrical signal generated by the displacement change of the primary magnetic rod 220 is used to trigger the wireless monitoring body 100 to enter an activated state. Because soil changes can be a continuous action over a long period of time, accurate monitoring of subsequent changes in the soil is required.
(3) When the magnetic rod 220 moves down to the position opposite to the second magnetic sensor 150b under the external tension, the second magnetic sensor 150b senses that the magnetic rod 220 passes through to generate a second electric signal, and at this time, the wireless monitoring main body 100 is in an early warning state.
When the magnetic rod 220 is further moved downward by the downward pulling force, the upper end of the magnetic rod 220 gradually passes through between the two second magnetic resistance sensors 150 b. When the magnetic bar 220 is between two second magneto-resistive sensors 150b, the second magneto-resistive sensors 150b inductively generate a second electrical signal. At this time, the downward movement distance of the magnetic rod 220 is larger than that in the activation triggering state, which indicates the displacement degree of the soil body to reach the degree of the need of early warning, so that the wireless monitoring main body 100 enters the early warning state at this time.
(4) When external tension is applied, and the magnetic rod 220 moves out of the position corresponding to the second magnetic resistance sensor 150b, the second magnetic resistance sensor 150b cannot sense that the magnetic rod 220 generates a reset electric signal, and at this time, the wireless monitoring main body 100 is in an alarm state.
When the magnetic rod 220 is pulled downwards and moves out of the space between the two second magnetic sensors 150b, the magnetic rod 220 is far away from the two second magnetic sensors 150b, so that the second magnetic sensors 150b generate a reset electrical signal, and the reset electrical signal can be understood as a corresponding electrical signal generated by the processor 110 when the second magnetic sensors 150b cannot sense the magnetic rod 220, because of the first three states, the second magnetic sensors 150 can sense the magnetic rod 220. When the magnetic rod 220 moves out between the two second magnetic sensors 150b, it is also stated that the displacement degree generated corresponding to the monitored ground is more serious, and therefore, the wireless monitoring main body 100 enters an alarm state at this time.
The present application realizes that when the magnetic rod 220 and the first magnetic sensor 150a and the second magnetic sensor 150b located at the side of the detection hole 140 are in different relative positions, different electrical signals can be formed to trigger the wireless monitoring main body 100 to respond to different monitoring states, which can be completed through the processor 110 and the communication module 120.
For example, signals of different currents or voltages are obtained through different inductions of the magnetoresistive sensors 150, and then the signals can be converted into binary codes representing "00", "01", "10" and "11" of different states through a digital-to-analog converter in the processor 110, and then after the "10" representing the early warning state or the "11" representing the alarm state is obtained, a preset early warning signal or an alarm signal is triggered and is externally sent to a monitoring platform or a cloud end which are in communication connection in advance through the wireless communication module 120, so that monitoring and early warning of road collapse are achieved.
However, it should be noted that, in the present application, obtaining the electrical signal through the sensor belongs to the common knowledge, and sending the corresponding preset early warning signal or alarm signal through different electrical signals also belongs to the common technical means. For example, a smoke alarm may sound an alarm or water spray when detecting smoke. Therefore, the technical problem in the application is not solved by depending on a computer program or a method, and the main innovation point of the application is that the soil deformation condition is accurately, simply and conveniently monitored through a mechanical connection structure.
In one or more embodiments, the wireless monitoring device for road collapse described herein employs a disposable battery for power supply, and is provided with a processor 110, completes the collection of a plurality of magnetoresistive sensors 150 and temperature signals and the collection of power supply voltage, and performs data interaction with a cloud server through a communication network.
In an embodiment of the present application, the communication module 120 is configured to be communicatively connected to an external device; when the wireless monitoring main body 100 is in an early warning state or an alarm state, the communication module 120 is started, and corresponding early warning information or alarm information is sent to a monitoring platform in a designated communication connection through the communication module 120.
For example, the wireless monitoring main body 100 is connected to a public wireless data communication network by using the communication module 120, and all the early warning and alarm can be displayed and processed in the center of the monitoring platform; related personnel obtain final early warning and alarming data in real time through a computer or a mobile terminal, so that the problem that the existing road collapse detection is slow to detect and cannot detect is solved, and the automatic, real-time and continuous monitoring of the road collapse is realized.
In an embodiment of the present application, the communication module 120 further includes a communication antenna; the communication module 120 adopts an NB-IOT communication mode. Narrow-Band Internet of Things (NB-IOT) becomes an important branch of the world wide Internet. The NB-IOT is constructed in a cellular network, only consumes about 180kHz bandwidth, and can be directly deployed in a GSM network, a UMTS network or an LTE network so as to reduce the deployment cost and realize smooth upgrading. In the application, an NB-IOT communication mode is adopted, and the road collapse wireless monitoring device can continuously work for more than 5 years after being installed.
In an embodiment of the present application, the wireless monitoring main body 100 further has a voltage detection device to monitor the electric quantity and the working state, so as to facilitate the management and maintenance of the device; and/or, the wireless monitoring body 100 is provided with a temperature detection device to detect the road temperature.
For example, the wireless monitoring device for road collapse further has a heartbeat function, monitors the electric quantity and the working state of equipment, can regularly monitor the health state of the battery of the equipment, and reports the health state to a manager so as to control the state of the equipment, so that the equipment management and maintenance are facilitated. In addition, the wireless monitoring body 100 may also be provided with a temperature detection device for road temperature measurement, so that the road pavement temperature may be remotely monitored.
Preferably, the wireless monitoring devices for road collapse can be connected to the internet; cloud service technologies may be employed, including data reception, databases, data processing, WEB services, and the like. The equipment state and the early warning result corresponding to the road collapse wireless monitoring device are obtained at a user computer or a mobile terminal through the Internet.
In an embodiment of the present application, the wireless monitoring body 100 is manufactured by a fully-sealed colloid process. For example, the wireless monitoring body 100 is encapsulated by polyurethane glue. The wireless monitoring main part 100 packaged by the colloid realizes high-level protection of internal devices, is waterproof and dustproof, has high mechanical strength, has high pressure resistance on the surface of the colloid, and is convenient for punching and mounting on a road plane.
In addition, in an embodiment of the present application, the wireless monitoring body 100 may also be mounted inside a road surface body by using a minimally invasive mounting process. For example, the mounting hole can be about 30mm by adopting a minimally invasive mounting technology on a road surface. The wireless monitoring device for road collapse can also be of a cylinder structure, the diameter of the wireless monitoring device is smaller than that of the mounting hole, and the strength of the road cannot be damaged by the mounting mode.
Fig. 3 is a schematic diagram illustrating a structural scenario of a road collapse wireless monitoring system according to an embodiment of the present application. As shown, the wireless monitoring system for road collapse comprises: the wireless monitoring devices 1 for road collapse are arranged on a target road in a distributed manner, so that the whole road section can be monitored.
In one or more practical embodiments, in actual use, the detection of a road often requires a large number of road collapse wireless monitoring devices 1 as shown in fig. 1, for example, one road collapse wireless monitoring device is installed at intervals of several meters or several tens of meters, so as to monitor the whole road or a specified road section. When a plurality of the wireless monitoring devices 1 for road collapse are arranged, the whole monitoring data can be acquired through the communication module, and the wireless monitoring devices 1 for road collapse can be managed and maintained in a unified manner.
To sum up, the wireless monitoring devices that road sinks and system thereof that this application provided installs in the internal portion of road table, the device includes: a wireless monitoring body comprising: the system comprises a processor, a communication module and a power supply unit; a detection hole with a downward opening is formed in the wireless monitoring main body, and one or more magnetoresistive sensors are arranged in the detection hole; each magneto-resistive sensor is electrically connected with the processor; the magnetic rod and the detection rod are arranged below the wireless monitoring main body; the upper end of the magnetic rod is inserted into the detection hole; the lower end of the magnetic rod is connected with a detection rod buried in soil below a road hardened layer, so that when the detection rod is displaced due to change of the soil, the magnetic rod is driven to be displaced in the detection hole relative to the magnetic resistance sensors, and the magnetic resistance sensors generate electric signals.
The method and the device can monitor not only the road collapse caused by the soil body cavity at the lower part of the road, but also the road collapse caused by the lateral displacement of the soil body at the lower part of the road, and can send early warnings of different levels outwards in combination with the displacement degree. The device has the advantages of simple equipment, low power consumption, continuous and long-time operation after installation, and convenient management and monitoring.
The application effectively overcomes various defects in the prior art and has high industrial utilization value.
The above embodiments are merely illustrative of the principles and utilities of the present application and are not intended to limit the application. Any person skilled in the art can modify or change the above-described embodiments without departing from the spirit and scope of the present application. Accordingly, it is intended that all equivalent modifications or changes which can be made by those skilled in the art without departing from the spirit and technical concepts disclosed in the present application shall be covered by the claims of the present application.
Claims (10)
1. The utility model provides a wireless monitoring devices that road sinks which characterized in that installs in the internal portion of road table, the device includes:
a wireless monitoring body comprising: the system comprises a processor, a communication module and a power supply unit; a detection hole with a downward opening is formed in the wireless monitoring main body, and one or more magnetoresistive sensors are arranged in the detection hole; each magneto-resistive sensor is electrically connected with the processor;
the magnetic rod and the detection rod are arranged below the wireless monitoring main body; the upper end of the magnetic rod is inserted into the detection hole; the lower end of the magnetic rod is connected with a detection rod buried in soil below a road hardened layer, so that when the detection rod is displaced due to change of the soil, the magnetic rod is driven to be displaced in the detection hole relative to the magnetic resistance sensors, and the magnetic resistance sensors generate electric signals.
2. The wireless monitoring device for road collapse according to claim 1, wherein the magnetic bar is further configured with a resilient box body and a resilient device unit to constitute a resilient magnetic bar box;
the resilience magnetic bar box is arranged below the wireless monitoring main body; the upper end of the magnetic rod is inserted into the detection hole; the lower end of the magnetic rod is fixed at the top end of the rebounding device;
the bottom end of the springback device is arranged at the bottom of the box body; the top end of a central stress shaft of the rebounding device is fixed at the top end of the rebounding device; the bottom end of the central stress shaft of the rebounding device extends out of the hole in the bottom of the box body, and a connecting piece is arranged at the bottom end of the rebounding device and used for being connected with the detection rod.
3. The wireless monitoring device for road collapse according to claim 2, wherein the detection rod is further provided with a connecting cable;
the upper end of the connecting cable is connected with the bottom end of the central stress shaft through the connecting piece; the lower end of the connecting cable is fixedly connected to the detection rod; the detection rod is buried in a soil body, and the connection cable is in a natural straightening state.
4. The wireless monitoring device for road collapse according to claim 1, wherein a first magnetic resistance sensor positioned at the top of the detection hole and a second magnetic resistance sensor positioned at the side of the detection hole are arranged in the detection hole;
when the magnetic bar, the first magnetic resistance sensor and the second magnetic resistance sensor positioned at the side part of the detection hole are in different relative positions, different electric signals are formed so as to trigger the wireless monitoring main body to respond to different monitoring states.
5. The wireless monitoring device for road collapse according to claim 4, wherein different electrical signals are generated when the magnetic bar and the first magnetic resistance sensor and the second magnetic resistance sensor located at the side of the detection hole are in different relative positions, so as to trigger the wireless monitoring body to respond to different monitoring states, including any one or more of the following combinations:
at the beginning and when the external tension is not applied, no electric signal is generated, and the wireless monitoring main body is in a dormant state at the moment;
when external tension is applied, the magnetic rod moves downwards, the first magnetic resistance sensor induces the magnetic rod to move away from the magnetic rod to generate a first electric signal, and the wireless monitoring main body is in an activated state;
when the magnetic rod moves downwards to the opposite position of the second magnetic resistance sensor under the condition of external tension, the second magnetic resistance sensor induces the magnetic rod to pass through so as to generate a second electric signal, and at the moment, the wireless monitoring main body is in an early warning state;
when the magnetic rod moves out of the relative position of the second magnetic resistance sensor under the condition of external tension, the second magnetic resistance sensor cannot sense the magnetic rod to generate a reset electric signal, and at the moment, the wireless monitoring main body is in an alarm state.
6. The wireless monitoring device for road collapse according to claim 5, wherein the communication module is used for being in communication connection with external equipment; when the wireless monitoring main body is in an early warning state or an alarming state, the communication module sends corresponding early warning information or alarming information to a monitoring platform in appointed communication connection.
7. The wireless monitoring device of road collapse according to claim 1, wherein the communication module further comprises a communication antenna; the communication module adopts an NB-IOT communication mode.
8. The wireless monitoring device for road collapse according to claim 1, wherein the wireless monitoring body is manufactured by adopting a fully-sealed colloid process; and/or the wireless monitoring main body adopts a minimally invasive installation process and can be directly installed inside the road surface body.
9. The wireless monitoring device for road collapse according to claim 1, wherein the wireless monitoring body is provided with a voltage detection device to monitor electric quantity and working state, so as to facilitate equipment management and maintenance; and/or, the wireless monitoring main body is provided with a temperature detection device to detect the road temperature.
10. A wireless monitoring system for road collapse, the system comprising: a plurality of wireless road collapse monitoring devices according to any one of claims 1 to 9; and the road collapse wireless monitoring devices are arranged on the target road in a distributed manner.
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| CN202020262066.9U CN211555107U (en) | 2020-03-05 | 2020-03-05 | Road collapse wireless monitoring device and system thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112349078A (en) * | 2021-01-11 | 2021-02-09 | 湖南联智科技股份有限公司 | Gravity type underground cavity automatic monitoring and alarming method |
| CN114459703A (en) * | 2021-12-29 | 2022-05-10 | 北京科技大学 | System and method for monitoring capture of water delivery leakage area and water and soil loss to air in pressurized pipeline |
| CN114763879A (en) * | 2021-01-15 | 2022-07-19 | 成都荣耀科技有限公司 | Maintenance-free underground pipeline fracture monitoring device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112349078A (en) * | 2021-01-11 | 2021-02-09 | 湖南联智科技股份有限公司 | Gravity type underground cavity automatic monitoring and alarming method |
| CN114763879A (en) * | 2021-01-15 | 2022-07-19 | 成都荣耀科技有限公司 | Maintenance-free underground pipeline fracture monitoring device |
| CN114763879B (en) * | 2021-01-15 | 2024-06-04 | 成都荣耀科技有限公司 | Maintenance-free underground pipeline fracture monitoring device |
| CN114459703A (en) * | 2021-12-29 | 2022-05-10 | 北京科技大学 | System and method for monitoring capture of water delivery leakage area and water and soil loss to air in pressurized pipeline |
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