CN215725736U

CN215725736U - Surface deformation detection equipment and system

Info

Publication number: CN215725736U
Application number: CN202022678994.6U
Authority: CN
Inventors: 严建华; 贺鑫焱; 李磊; 殷勇; 何艳芳; 常晓萍; 何秉顺; 刘昌军; 王剑; 王维
Original assignee: BEIJING GUOXIN HUAYUAN TECHNOLOGY CO LTD
Current assignee: BEIJING GUOXIN HUAYUAN TECHNOLOGY CO LTD
Priority date: 2020-11-18
Filing date: 2020-11-18
Publication date: 2022-02-01
Anticipated expiration: 2030-11-18

Abstract

The application relates to surface deformation detection equipment and system, and belongs to the field of geological environment detection. A kind of surface deformation detection equipment, including outer casing and PCB board clamped on the outer casing; the system also comprises a controller, a pressure sensing component, an MEMS acceleration sensor and a lithium battery, wherein the controller, the pressure sensing component, the MEMS acceleration sensor and the lithium battery are electrically connected with the PCB; the pressure sensing assembly is electrically connected with the controller, and the sensor assembly is used for monitoring the pressure generated in the deformation of the earth surface and sending an electric signal to the controller; the MEMS acceleration sensor is electrically connected with the controller and used for monitoring an inclination angle generated by the detection equipment and sending an electric signal to the controller; the lithium battery is electrically connected with the controller and used for supplying power to the controller. The monitoring system has the advantages that monitoring of various elements such as various pressures and positions generated in earth surface deformation can be achieved, and meanwhile, the detection equipment is installed more conveniently.

Description

Surface deformation detection equipment and system

Technical Field

The application relates to the field of geological environment detection, in particular to surface deformation detection equipment and system.

Background

Geological disasters mainly include collapse, landslide, debris flow, karst land, collapse, ground cracks and the like, which are caused by severe changes of the surface geological structure of the original crust and are usually sudden. Geological disasters become important factors restricting social and economic development and people's living, so the prevention and the treatment of the geological disasters are very important, and the aim of avoiding or reducing the geological disasters can be achieved by preventing in advance.

Each monitoring sensor in the related art ground surface deformation detection is generally individually arranged and has low integration level, so that each monitoring sensor needs to be individually installed in the ground surface during the process of monitoring the ground surface deformation.

In view of the above-mentioned technologies, the inventor believes that there are drawbacks in that it is necessary to separately install each monitoring sensor and the formation in the surface deformation monitoring, the operation is inconvenient, and it is inconvenient to integrally manage all the monitoring sensors.

SUMMERY OF THE UTILITY MODEL

In order to facilitate installation of each sensor in ground surface deformation monitoring, the application provides ground surface deformation detection equipment and system.

In a first aspect, the present application provides a ground surface deformation detection device, which adopts the following technical scheme:

a kind of surface deformation detection equipment, including outer casing and PCB board clamped on the outer casing; the system also comprises a controller, a pressure sensing component, an MEMS acceleration sensor and a lithium battery, wherein the controller, the pressure sensing component, the MEMS acceleration sensor and the lithium battery are electrically connected with the PCB; wherein,

the pressure sensing assembly is electrically connected with the controller, and the sensor assembly is used for monitoring the pressure generated in the deformation of the earth surface and sending an electric signal to the controller;

the MEMS acceleration sensor is electrically connected with the controller and used for monitoring an inclination angle generated by the detection equipment and sending an electric signal to the controller;

the lithium battery is electrically connected with the controller and used for supplying power to the controller.

By adopting the technical scheme, a plurality of sensors such as the pressure sensing assembly, the MEMS acceleration sensor and the like are integrated on one PCB, and then the PCB is fixed on the shell. In case take place the earth's surface and warp, the controller receives the signal of telecommunication that each sensor sent and compares the parameter that will accord with the earth's surface and warp with the data of prestoring and stores, earth's surface warp check out test set is because of integrated multiple sensor, not only can monitor the parameter that multiple earth's surface warp and correspond, if the various pressure that produce in the earth's surface warp, can also detect the inclination that check out test set self produced, and only need with earth's surface warp check out test set install go into the stratum in addition can, the inconvenience that each sensor of installation brought has been removed respectively from.

Preferably, the upper part and the lower part of the shell are detachably connected, the PCB is clamped in the upper part of the shell, the PCB is electrically connected with the wireless transmitting module, and the wireless transmitting module is electrically connected with the controller.

Through adopting above-mentioned technical scheme, upper portion and lower part can be dismantled and be connected, can unpack the shell apart into upper portion and lower part earlier, then install the PCB board in upper portion earlier, and then with upper portion and lower part combination together, it is more convenient to operate. In addition, a wireless transmitting module is arranged, and parameters which are collected by the controller and conform to the surface deformation can be sent out.

Preferably, the pressure sensing assembly comprises an osmotic pressure sensor and/or a soil pressure sensor, the osmotic pressure sensor is used for monitoring the water seepage pressure in the ground surface deformation and sending an electric signal to the controller, and the soil pressure sensor is used for monitoring the vertical pressure generated by the soil layer in the ground surface deformation and sending an electric signal to the controller;

the detection device further comprises a laser sensor which is electrically connected with the PCB and used for monitoring horizontal displacement generated by surface deformation, a fixing piece of which a part of structure is embedded in the stratum is arranged on one side of the detection device, and the upper part of the shell is made of transparent materials.

By adopting the technical scheme, the seepage pressure in the earth surface deformation is monitored in real time by the seepage pressure sensor, the vertical pressure generated by the soil layer in the earth surface deformation is monitored in real time by the soil pressure sensor, the distance between the detection equipment and the fixing piece is monitored in real time by the laser sensor, and once the geology deforms, the controller obtains the seepage pressure electric signal output by the seepage pressure sensor, the vertical pressure electric signal output by the soil pressure sensor when the earth surface deforms and the detection displacement value output by the laser sensor and stores the signals.

the detection device further comprises a stay wire sensor electrically connected with the PCB, the stay wire sensor is used for monitoring horizontal displacement generated by surface deformation, a through hole is formed in the side wall, close to the PCB, of the shell, a telescopic assembly detachably connected with the shell is arranged at the position of the through hole, a stay wire of the stay wire sensor penetrates out of the through hole and is located in the telescopic assembly, a fixing piece of which the partial structure is embedded in the stratum is arranged on one side of the detection device, and the stay wire extends out of the telescopic assembly and is connected with the fixing piece.

By adopting the technical scheme, when landslide, debris flow and other ground surface deformations occur, the controller can obtain the water seepage pressure in the ground surface deformation monitored by the osmotic pressure sensor in real time and the vertical pressure generated by the soil layer in the ground surface deformation monitored by the soil pressure sensor in real time.

In addition, the stay wire of the stay wire sensor penetrates through the through hole, and the stay wire can be buried in the ground or laid on the ground surface. When deformation occurs in the area between the detection equipment and the fixing piece, the stay wire of the stay wire sensor is dragged by the force generated by the deformation to enable the stay wire sensor to output a displacement electric signal, so that the monitoring of horizontal displacement generated by the deformation of the ground surface is realized.

Preferably, the protection device for preventing the stay wire of the stay wire sensor from being broken comprises a hollow clamping sleeve and a clamping core which can be clamped inside the hollow clamping sleeve, the stay wire is tied and arranged in the clamping core, a circle of arc-shaped groove is formed in the outer wall of the clamping core, and at least one collision bead is arranged on the inner wall of the clamping sleeve corresponding to the arc-shaped groove.

Through adopting above-mentioned technical scheme, in case external force surpasss certain numerical value and monitoring distance when surpassing the range of acting as go-between sensor, bump the pearl and break away from and make card core and cutting ferrule part from the arc wall, and the one end of acting as go-between sensor also can in time separate with the cutting ferrule because fixed linking to each other with the card core, and then separate with the mounting, has avoided the damage of acting as go-between and has made the acting as go-between sensor become disposable equipment.

Preferably, the inner wall of the ferrule at the end far away from the pull wire is provided with an internal thread for screwing with the fixing piece.

Through adopting above-mentioned technical scheme, set up the internal thread and can directly fix with the mounting spiral shell thread with the cutting ferrule. Because the fixing piece can be arranged on the ground surface and possibly on a building, the pull wire of the pull wire sensor is more firmly and conveniently connected with the fixing piece by directly screwing the internal thread on the clamping sleeve and the fixing piece.

Preferably, a transverse hole is formed in the inner wall of one end, far away from the pull wire, of the clamping sleeve.

Through adopting above-mentioned technical scheme, can follow a wire rope of dragging in addition on the cross bore, wire rope's the other end is fixed on the mounting, and detection equipment can detect the region of wider scope like this.

In a second aspect, the present application provides a ground surface deformation detection system, which adopts the following technical solutions:

a ground surface deformation detection system comprises at least one ground surface deformation detection device and terminal equipment;

the terminal equipment is connected with the wireless transmitting module through the wireless receiving module and used for receiving the electric signal of the surface deformation sent by the controller.

By adopting the technical scheme, the terminal equipment is connected with the wireless transmitting module through the wireless receiving module and is used for receiving the ground surface deformation electric signals sent by the controller, the terminal equipment can be mobile phones, tablet computers, hosts, computers, alarm devices and other electronic equipment, and the terminal equipment can be carried by monitoring people so as to know the ground surface deformation at any time and any place and can also be an indoor home-entering alarm device.

In summary, the present application includes at least one of the following beneficial technical effects:

1. by adopting the technical scheme, a plurality of sensors such as the pressure sensing assembly, the MEMS acceleration sensor and the like are integrated on one PCB, and then the PCB is fixed on the shell. Once the earth surface deformation occurs, the controller receives the electric signals sent by the sensors and compares the electric signals with prestored data to store parameters conforming to the earth surface deformation, and the earth surface deformation detection equipment integrates various sensors, so that the parameters corresponding to various earth surface deformations, such as various pressures generated in the earth surface deformation, can also detect the inclination angle generated by the detection equipment per se, and only the earth surface deformation detection equipment needs to be installed in the earth surface, so that the inconvenience caused by respectively installing various sensors is avoided;

2. by adopting the technical scheme, the terminal equipment is connected with the wireless transmitting module through the wireless receiving module and is used for receiving the ground surface deformation electric signals sent by the controller, the terminal equipment can be mobile phones, tablet computers, hosts, computers, alarm devices and other electronic equipment, and the terminal equipment can be carried by monitoring people so as to know the ground surface deformation at any time and any place and can also be an indoor home-entering alarm device.

Drawings

Fig. 1 is a schematic view of the overall structure of the ground surface deformation detection device of the present application;

FIG. 2 is a partial cross-sectional view of the surface deformation sensing apparatus of the present application;

FIG. 3 is an enlarged view A of FIG. 2 for showing the internal structure of the housing;

FIG. 4 is an enlarged view B of FIG. 2, illustrating the telescoping assembly;

FIG. 5 is an enlarged view C of FIG. 2, illustrating the protection device;

FIG. 6 is a schematic diagram of a circuit module structure of a ground surface deformation detection system according to the present application;

FIG. 7 is a schematic diagram of a communication structure between a surface deformation sensing device embodying the present application and a heterogeneous terminal device;

FIG. 8 is a schematic view of an exploded structure of an outer shell and an inner sleeve embodying the present application together;

fig. 9 is a schematic structural view of the outer case and the inner case of the present application in an installation state.

Description of reference numerals: 1. a PCB board; 2. a controller; 3. a lithium battery; 4. a fixing member; 5. a wireless transmitting module; 10. a housing; 11. an upper portion; 111. an upper projection; 112. a card slot; 12. a lower portion; 121. a lower protrusion; 13. a through hole; 20. a soil pressure sensor; 30. a pull wire sensor; 31. a pull wire; 40. a MEMS acceleration sensor; 50. a telescoping assembly; 51. An inner tube; 511. a first hook; 512. a raised head; 52. an outer tube; 521. a second hook; 522. a groove; 200. A protection device; 210. a card sleeve; 211. bumping beads; 212. a transverse hole; 220. clamping a core; 221. an arc-shaped slot; 222. a central bore; 300. A terminal device; 400. an inner sleeve; 410. an upper end; 420. a lower end; 500. a first mounting hole; 600. and a second mounting hole.

Detailed Description

The present application is described in further detail below with reference to figures 1-9.

The first embodiment is as follows:

the embodiment of the application discloses a ground surface deformation detection device. Referring to fig. 1 and 2, a ground surface deformation detecting apparatus includes a case 10 and a PCB board 1 snapped on the case 10.

Referring to fig. 2 and 3, the PCB board 1 is electrically connected with a pressure sensing assembly for monitoring various pressures generated in the deformation of the ground surface, a pull sensor 30 for monitoring the horizontal displacement generated by the deformation of the ground surface, and a MEMS acceleration sensor 40 for monitoring the inclination angle generated by the detection equipment in the deformation of the ground surface.

Further, the MEMS acceleration sensor 40 of the present application employs a digital MEMS-based acceleration sensor ADXL213, which is capable of detecting a small angle.

The PCB board 1 is also electrically connected with a controller 2, the pressure sensing assembly comprises an osmotic pressure sensor and/or a soil pressure sensor 20, the osmotic pressure sensor (not shown) is used for monitoring the osmotic pressure in the ground surface deformation and sending an electric signal to the controller 2, and the soil pressure sensor 20 is used for monitoring the vertical pressure generated by the soil layer in the ground surface deformation and sending an electric signal to the controller 2.

The pull sensor 30 is of the type: LS-2000.

The PCB board 1 is also electrically connected with a lithium battery 3 for supplying power to the controller 2, the pressure sensing assembly, the pull wire sensor 30 and the MEMS acceleration sensor 40. The osmotic pressure sensor, the soil pressure sensor 20, the stay wire sensor 30 and the MEMS acceleration sensor 40 are respectively electrically connected with the controller 2 and respectively send monitored electric signals to the controller 2, the controller 2 compares, analyzes and processes the received electric signals and internal preset values thereof, and stores vertical pressure values, water seepage pressure values, horizontal displacement values and inclination angle values which accord with the deformation of the earth surface.

The housing 10 is composed of an upper portion 11 and a lower portion 12 which are detachably connected, wherein an upper protrusion 111 is extended from an end of the upper portion 11 close to the lower portion 12, and a lower protrusion 121 is extended from an end of the lower portion 12 close to the upper portion 11. The upper protrusion 111 and the lower protrusion 121 are spliced together to form a part of the sidewall of the housing 10. Wherein the upper protrusion 111 and the lower protrusion 121 are fixed together by screws.

Upper portion 11 is equipped with draw-in groove 112, and PCB board 1 joint is in draw-in groove 112, and draw-in groove 112 sets up on the partial inner wall of upper portion 11, in order to prevent breaking away from of PCB board 1 and draw-in groove 112, can add the screw between the inner wall of draw-in groove 112 and PCB board 1 and further strengthen fixedly.

Referring to fig. 1 and 3, a through hole 13 is formed in a side wall of the housing 10 close to the PCB 1, a fixing member 4 is embedded in a ground surface deformation monitoring area and at a position having a certain distance from a detection device, a partial structure of the fixing member 4 is embedded in the ground, and one end of a stay wire of the stay wire sensor 30 penetrates through the through hole 13 and is fixedly connected with the fixing member 4.

Wherein the guy wires may be buried in the earth, laid on the earth or suspended above the earth. When deformation occurs in the area between the detection equipment and the fixing piece 4, the stay wire of the stay wire sensor 30 is dragged by the force generated by the deformation to enable the stay wire sensor 30 to output a displacement electric signal, so that the monitoring of the horizontal displacement generated by the deformation of the ground surface is realized.

Referring to fig. 3 and 4, further, in order to protect the wires of the wire sensor 30, a telescopic assembly 50 detachably connected to the housing 10 is disposed at the through hole 13, and the telescopic assembly 50 is connected to the outer side of the side wall of the housing 10 by a flange.

The telescopic assembly 50 comprises an inner tube 51 and an outer tube 52 which can be telescopically clamped with the inner tube, at least one first clamping hook 511 is arranged on the inner tube 51, at least one second clamping hook 521 which can be hooked with the first clamping hook 511 is arranged on the outer tube 52, a spherical raised head 512 is arranged on the first clamping hook 511, grooves 522 are arranged on the inner walls of the outer tube 52 corresponding to the second clamping hook 521, and when the inner tube 51 and the outer tube 52 are fixed, each raised head 512 is positioned in the corresponding groove 522.

Wherein the outer tube 52 may be an elliptical tube, the inner tube 51 a cylindrical tube, the major axis of the elliptical outer tube 52 being greater than the outer diameter of the cylindrical inner tube 51, and the minor axis of the elliptical outer tube 52 being equal to the outer diameter of the cylindrical inner tube 51, such that the grooves 522 are located at both ends of the minor axis of the outer tube 52. When the nib 512 is positioned at both ends of the minor axis of the outer tube 52 and the nib 512 is positioned in the corresponding recess 522, the nib 512 can be disengaged from the recess 522 by rotating the inner tube 51.

When it is desired to pull out or retract the inner tube 51, the inner tube 51 can be rotated to disengage the projection 512 from the recess 522 while the first and

second hooks

511 and 521 are disengaged from each other. The arrangement of the nose 512 not only makes the first hook 511 and the second hook 521 combined more firmly, but also the nose 512 can play a guiding role when the first hook 511 and the second hook 521 are required to be fixed again after the telescopic length of the inner tube 51 is adjusted.

Compared with the fixing mode of the bolt, the fixing mode of the first clamping hook 511 and the second clamping hook 521 does not cause the phenomenon that the bolt cannot rotate and stretch out and draw back due to rusting of the threaded hole, so that the fixing mode of the first clamping hook 511 and the second clamping hook 521 is more suitable for severe environments in the stratum.

The pull wire of the pull wire sensor 30 is positioned in the inner tube 51 through the through hole 13 and extends out of the inner tube 51 to be fixedly connected with the fixing piece 4. Once the area between the detection device and the fixing member 4 is deformed, the position of the fixing member 4 is changed, and the pulling wire of the pulling wire sensor 30 is pulled to enable the pulling wire sensor 30 to output a displacement electric signal, so that the monitoring of the horizontal displacement generated by the deformation of the ground surface is realized.

The telescopic assembly 50 can be arranged on the ground surface or under the stratum, and the arrangement of the telescopic assembly 50 can not only protect the stay wire of the stay wire sensor 30, but also arrange the pipeline to be more beneficial to maintenance or replacement of the stay wire and the like. In addition, if the stay wire needs to be buried underground, the stay wire is more convenient to install due to the arrangement of the pipeline.

Referring to fig. 3 and 5, further, the ground surface deformation detecting apparatus further includes a protecting device 200 for preventing the wires of the wire pulling sensor 30 from being broken, the protecting device 200 includes a hollow sleeve 210 and a core 220 that can be clamped inside the hollow sleeve 210, a circle of arc-shaped groove 221 is provided on an outer wall of the core 220, at least one collision bead 211 is provided on an inner wall of the sleeve 210 corresponding to the arc-shaped groove 221, and the number of the collision beads 211 is four in this embodiment.

The core 220 has a stepped central hole 222 therein, the pull wire penetrates into the central hole 222 and has one end located at the step of the central hole 222, and the pull wire can be fixed without departing from the central hole 222 by knotting one end of the pull wire, wherein the diameter of the central hole 222 at the end where the pull wire extends is smaller than that at the knotted position.

When the monitored deformation region is within the range of the stay wire sensor 30, the inner wall of the hollow ferrule 210 at the end far away from the stay wire has an internal thread 213 for screwing with the fixing member 4, and the ferrule 210 can be screwed and fixed with the fixing member 4 by the arrangement of the internal thread 213.

Further, when the monitored deformation region exceeds the range of the pull sensor 30, the inner wall of one end of the hollow ferrule 210 far away from the pull sensor 30 is provided with a transverse hole 212, a steel wire rope can be additionally pulled from the transverse hole 212, and the other end of the steel wire rope is fixed on the fixing part 4, so that the detection equipment can detect a region in a wider range.

The working principle of the ground surface deformation detection equipment in the first embodiment is as follows:

firstly, a plurality of sensors such as an osmotic pressure sensor and/or a soil pressure sensor 20, an MEMS acceleration sensor 40 and a pull wire sensor 30 are integrated on one PCB board 1, then the PCB board 1 is fixed on a shell 10, and the earth surface deformation detection equipment can monitor a plurality of earth surface deformation parameters due to the integration of the plurality of sensors.

In order to prevent the breakage of the pull wire caused by the monitoring distance exceeding the range of the pull wire sensor 30, the pull wire of the pull wire sensor 30 passes through the housing 10 and one end of the pull wire sensor is fixedly connected to the protection device 200, once the external force exceeds a certain value, the collision bead 211 is separated from the arc-shaped groove 221 to separate the clamping core 220 from the clamping sleeve 210, and the one end of the pull wire sensor 10 can be separated from the clamping sleeve 210 in time because of being fixedly connected with the clamping core 220 and further separated from the fixing part 4, so that the damage of the pull wire is avoided and the pull wire sensor 30 becomes a disposable device.

The protection device 200 is arranged, at least one steel wire rope can be dragged on the transverse hole 212 of the clamping sleeve 210, the other end of each steel wire rope is respectively led to different directions and is respectively and fixedly connected to the fixing piece 4, and the arrangement of the steel wire ropes can increase the detection area.

In addition, the protection device 200 may be provided in the telescopic assembly 50 in order to protect the protection device 200. Specifically, the wireline, protective device 200 is located within the inner pipe 51, and if the wireline is desired to be buried in the formation, the telescoping assembly 50 may be buried in the formation. If it is not desired to bury the wireline in the formation, the telescoping assemblies 50 can be laid directly on the surface. The telescopic assembly 50 is more beneficial to installation of a stay wire and a protection device, the environment in the stratum is complex, and the protection function of the telescopic assembly 50 is particularly important.

Example two:

the difference between this embodiment and the first embodiment is that a laser sensor (not shown) is used instead of the string sensor 30, when the laser sensor is used to monitor the horizontal displacement caused by the deformation of the ground surface, the upper portion 11 of the housing 10 needs to be made of transparent material and the laser sensor needs to be located on the ground surface, and at this time, the portion of the fixing member 4 located on the ground surface may have a certain width, and when the distance between the laser sensor and the portion of the fixing member 4 located on the ground surface changes, the laser sensor outputs data to the controller 2.

The material of the housing 11 may be PE, PP, pvc, Pdms, or other polymer transparent materials.

The second embodiment is more convenient to install than the first embodiment.

Example three:

referring to fig. 6 and 7, this embodiment is a ground surface deformation detecting system including at least one ground surface deformation detecting device in the first embodiment, the detecting system further includes a terminal device 300, and the terminal device 300 is connected to the wireless transmitting module 5 through a wireless receiving module and is used for receiving the ground surface deformation electric signal sent by the controller 2. The wireless receiving module may be built in the terminal device 300.

Specifically, the wireless transmitting module 5 is disposed on the PCB 1 and electrically connected to the controller 2, and the wireless transmitting module 5 is configured to transmit the vertical pressure value, the water seepage pressure value, the horizontal displacement value and the inclination angle value of the ground surface deformation obtained after the controller 2 compares, analyzes and processes the ground surface deformation to the terminal device 300

The wireless transmitting module 5 may be a 4G antenna, a wireless ad hoc network, or the like.

The terminal device 300 may be an electronic device such as a mobile phone, a tablet computer, a host, a computer, an alarm device, and the like, and is not limited herein.

Fig. 7 is a schematic structural diagram illustrating that the terminal device 300 is a host 310 and an alarm device 320, and when the terminal device 300 is the host 310, 4G transmission is adopted between the ground surface deformation detection device and the host 310; when the terminal device 300 is the alarm device 320, wireless ad hoc network transmission is adopted between the ground surface deformation detection device and the alarm device 320, specifically, a wireless ad hoc network based on LoRa is adopted.

The terminal device 300 can know the position where the earth surface deformation is generated according to the electric signal sent by the detection device so as to be convenient for a worker to process. Meanwhile, the terminal device may also summarize and generate a monitoring map, for example, the magnitude of the vertical pressure generated by the geological change at each time point and each position point is output according to the pressure value output by the soil pressure sensor 20, and the horizontal displacement generated by the deformation of the ground surface at each time point and each position point is output according to the displacement value output by the guy wire sensor 30.

The fourth embodiment:

referring to fig. 8 and 9, the present embodiment is a method for installing a ground surface deformation detecting apparatus in the first embodiment, including:

step one, an inner sleeve 400 is embedded into the lower portion 12 of the outer shell 10, an external force acts on the upper end 410 of the inner sleeve 400, and the lower end 420 of the inner sleeve 400 contacts the bottom wall of the outer shell 10.

Specifically, first, the hollow outer case 10 is placed on the ground, the inner case 400 is placed inside the outer case 10, the inner case 400 is knocked, a force simultaneously acts on the bottom wall of the outer case 10, and the inner case 400 drives the outer case 10 to move down together.

Referring to fig. 2 and 9, in step two, the external force continues to act on the upper end 410 of the inner sleeve 400, and the lower end 420 of the inner sleeve 400 penetrates through the bottom wall of the outer shell 10 and extends into the ground to form a first mounting hole 500 for mounting the outer shell 10 and a second mounting hole 600 for mounting the osmometric sensor and/or the soil pressure sensor 20.

Specifically, the inner sleeve 400 drives the outer shell 10 to move downward, so that the outer wall of the outer shell 10 contacts with the ground layer to gradually form a first installation hole 500, when the lower end 420 of the inner sleeve 400 penetrates through the bottom wall of the outer shell 10, the lower end 420 of the inner sleeve 400 opens the bottom wall of the outer shell 10, penetrates through the inside of the outer shell 10 and enters the soil layer, and then a second installation hole 600 is gradually formed.

In addition, in order to make the inner case 400 stronger, a structure in which the diameter of the lower end 420 of the inner case 400 is smaller than the diameter of the portion between the lower end 420 and the upper end 410 and the diameter of the upper end 410 is larger than the diameter of the portion between the lower end 420 and the upper end 410 may be employed.

And step three, extracting the inner sleeve 400, and sucking away the soil in the outer shell 10 by adopting a dust collector.

Step four, inserting the controller 2, the pressure sensing assembly, the MEMS acceleration sensor 40 and the pull wire sensor 30 at one side of the PCB 1 close to the bottom wall of the shell 10, welding the lithium battery 3 and the wireless transmitting module 5 on the PCB 1, and then inserting the PCB 1 at the upper part of the shell 10.

Specifically, firstly, the osmometer and the soil pressure sensor 20 in the pressure sensing assembly are inserted into the side face, close to the bottom wall of the shell 10, of the PCB board 1, so that the osmometer and/or the soil pressure sensor 20 can be inserted into the second mounting hole 600, and in order to avoid the separation of each component from the PCB board 1, the osmometer and the soil pressure sensor can be fixedly connected with the PCB board 1 in a welding mode.

In addition, in order to protect the connection line between the osmotic pressure sensor and/or the soil pressure sensor 20 and the PCB board 1, a protection tube may be disposed outside the connection line, and one end of the protection tube is welded to the PCB board 1.

The wireless transmitting module 5 is a 4G antenna, a wireless ad hoc network and the like.

Step five, extending the osmotic pressure sensor and/or the soil pressure sensor 20 into the second mounting hole 600, and extending the stay wire of the stay wire sensor 30 out of the shell 10 and extending the stay wire out of the shell 10;

specifically, if the guy wire of the guy wire sensor 30 needs to be buried in the ground, a corresponding guy wire channel needs to be dug, and if the guy wire needs to be protected by the telescopic assembly 50, the guy wire can be placed in the telescopic assembly 50.

If the wires of the pull wire sensor 30 do not need to be buried in the ground, the wires can be laid directly on the surface, and if protection of the telescoping assembly 50 is required, the wires can be placed inside the telescoping assembly 50.

In order to prevent the pulling rope of the pull sensor 30 from being pulled apart, the pull sensor 30 is attached to the protector 200.

And step six, fitting and fixing the upper part 11 of the shell 10 and the lower part 12 of the shell 10 together.

By additionally arranging the inner sleeve 400, the first mounting hole 500 and the second mounting hole 600 can be dug out by one-time force application operation, the operation steps are simplified, and the labor cost and the equipment cost are saved.

Further, the first step further includes drilling the bottom wall of the outer shell 10, wherein the diameter of the drilled hole is smaller than the diameter of the lower end 420 of the inner sleeve 400, and the drilling of the bottom wall of the outer shell 10 first facilitates the lower end 420 to penetrate through the bottom wall of the inner shell 10 into the soil layer, so that the second installation hole 600 is formed more easily.

Further, step one is preceded by drilling the bottom wall of the housing 10 and making cuts in the side walls of the housing 10 near the bottom wall, wherein the cuts may be more than 2 and are evenly distributed on the side walls. Such an arrangement makes it easier to allow the lower end 420 to penetrate through the inner casing 10 into the ground layer than to drill only the bottom wall of the outer casing 10, which, in addition to facilitating the formation of the second mounting hole 600, makes the combination of the testing device and the ground layer more secure.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. A surface deformation detecting apparatus characterized by: comprises a shell (10) and a PCB (1) clamped on the shell (10); the device also comprises a controller (2) electrically connected with the PCB (1), a pressure sensing component, an MEMS acceleration sensor (40) and a lithium battery (3); wherein,

the pressure sensing assembly is electrically connected with the controller (2), and is used for monitoring the pressure generated in the deformation of the earth surface and sending an electric signal to the controller (2);

the MEMS acceleration sensor (40) is electrically connected with the controller (2), and the MEMS acceleration sensor (40) is used for monitoring the inclination angle generated by the detection equipment and sending an electric signal to the controller (2);

the lithium battery (3) is electrically connected with the controller (2) and is used for supplying power to the controller (2);

the PCB (1) is also electrically connected with a wireless transmitting module (5), and the wireless transmitting module (5) is electrically connected with the controller (2).

2. The surface deformation sensing apparatus of claim 1, wherein: the upper part (11) and the lower part (12) of the shell (10) are detachably connected, and the PCB (1) is clamped in the upper part (11) of the shell (10).

3. The earth surface deformation sensing apparatus of claim 2, wherein: the pressure sensing assembly comprises an osmotic pressure sensor and/or a soil pressure sensor (20), the osmotic pressure sensor is used for monitoring the water seepage pressure in the ground surface deformation and sending an electric signal to the controller (2), and the soil pressure sensor (20) is used for monitoring the vertical pressure generated by the soil layer in the ground surface deformation and sending an electric signal to the controller (2);

the detection device further comprises a laser sensor which is electrically connected with the PCB (1) and used for monitoring horizontal displacement generated by surface deformation, a fixing piece (4) with a partial structure embedded in the ground layer is arranged on one side of the detection device, and the upper portion (11) of the shell (10) is made of transparent materials.

4. The earth surface deformation sensing apparatus of claim 2, wherein: the pressure sensing assembly comprises an osmotic pressure sensor and/or a soil pressure sensor (20), the osmotic pressure sensor is used for monitoring the water seepage pressure in the ground surface deformation and sending an electric signal to the controller (2), and the soil pressure sensor (20) is used for monitoring the vertical pressure generated by the soil layer in the ground surface deformation and sending an electric signal to the controller (2);

the detection device further comprises a stay wire sensor (30) electrically connected with the PCB (1), the stay wire sensor (30) is used for monitoring horizontal displacement generated by surface deformation, a through hole (13) is formed in the side wall, close to the PCB (1), of the shell (10), the through hole (13) is provided with a telescopic assembly (50) detachably connected with the shell (10), a stay wire of the stay wire sensor (30) penetrates out of the through hole (13) and is located in the telescopic assembly (50), one side of the detection device is provided with a fixing part (4) with a part of structure pre-embedded in the stratum, and the stay wire extends out of the telescopic assembly (50) and is connected with the fixing part (4).

5. The surface deformation sensing apparatus of claim 4, wherein: the pull wire sensor is characterized by further comprising a protection device (200) for preventing the pull wire of the pull wire sensor (30) from being broken, wherein the protection device (200) comprises a hollow clamping sleeve (210) and a clamping core (220) capable of being clamped inside the hollow clamping sleeve (210), the pull wire is knotted and arranged in the clamping core (220), a circle of arc-shaped groove (221) is formed in the outer wall of the clamping core (220), and at least one collision bead (211) is arranged on the inner wall of the clamping sleeve (210) corresponding to the arc-shaped groove (221).

6. The earth surface deformation sensing apparatus of claim 5, wherein: the inner wall of one end of the cutting sleeve (210) far away from the pull wire is provided with an internal thread (213) for being screwed with the fixing piece (4).

7. The earth surface deformation sensing apparatus of claim 5, wherein: the inner wall of one end of the clamping sleeve (210) far away from the pull wire is provided with a transverse hole (212).

8. A surface deformation detection system, characterized by: the ground surface deformation detection device comprises the ground surface deformation detection device as claimed in any one of claims 3-7, and further comprises a terminal device (300);

the terminal equipment (300) is connected with the wireless transmitting module (5) through a wireless receiving module and is used for receiving the earth surface deformation electric signals sent by the controller (2).