Multi-point tandem type slope displacement automatic monitoring device

Abstract

The utility model provides a multipoint tandem type slope displacement automatic monitoring device, and relates to the technical field of displacement measurement, inclination angle measuring units are connected in series through hinges and placed in a guide rail pipe, and the top ends of the inclination angle measuring units are suspended at orifices through orifice supports; the guide rail pipe is installed in the soil body measuring hole and serves as a moving track of the inclination angle measuring unit. The gravity type telescopic deformation meter is hinged with the inclination angle measuring unit at the lowest end; the RS485 data interaction module receives data at the orifice; the observation station radio station controls a plurality of RS485 data interaction modules in one area in a wireless mode; the PC end monitoring system receives angle data of each station radio station and converts the angle data into displacement in real time. According to the utility model, a plurality of inclination angle measuring units are connected in series, and a data interaction module identifies each measuring unit and sends instructions and receives data to the measuring units; synchronous receiving of data of multiple measuring points and real-time curve generation improve the monitoring efficiency, and the method can be applied to slope rock mass instability monitoring.

Description

TECHNICAL FIELD

[0001] The utility model relates to displacement measurement technical field especially point to a kind of multi-point series formula side slope displacement automatic monitoring device. BACKGROUND

[0002] Landslide is one of typical geological disasters, which has the characteristics of complex causes, various types, concealment and suddenness. Once it occurs, it is difficult to avoid in time, and it has been a big problem in disaster prevention and control. Scientific and accurate prediction of slope rock mass instability is one of the key scientific problems urgently needed to be broken through in geotechnical engineering. The process of slope disaster includes the initiation, development and instability of landslide body. During this process, there are a lot of detectable information, such as ground subsidence and inclination, deep displacement, microseismicity, etc. However, in the field of slope rock mass displacement monitoring, it is difficult to accurately predict the location of disaster, so a large number of measuring points need to be laid out, and the scheme of single-point manual monitoring is often used, which leads to huge consumption of manpower and material resources, and high cost of monitoring projects. The problems of one-sidedness and low timeliness of monitoring data caused by insufficient distribution of measuring points make it difficult to achieve the effect of prediction and prediction.

[0003] Traditional slope measurement technology mainly includes ground surface displacement monitoring technology based on satellite remote sensing and deep displacement measurement technology based on inclination measurement. Satellite remote sensing technology needs to meet good visibility conditions, and the monitoring accuracy is affected by rain, fog, etc. Landslide disasters often occur in areas with heavy rainfall, so the monitoring accuracy is greatly reduced. In the existing inclination measurement technology, the sliding inclinometer probe needs to be manually pulled and stopped every certain distance during slope displacement measurement, and a reading is taken at each stop. Only one depth and one direction reading can be taken at the same time, which has the problems of time-consuming, labor-intensive, low efficiency and long cycle. On the other hand, it cannot meet the needs of real-time monitoring and synchronous generation of displacement data. If multiple probes are placed in the hole, each probe needs a cable line to the hole, and the limited guide rail pipe space limits the number of probe distribution, which reduces the measurement accuracy. Moreover, once a fault occurs, it cannot be removed for maintenance, and cannot be reused, which increases the use cost. SUMMARY

[0004] In order to solve the technical problems of time-consuming, large data fluctuation, and inability to real-time continuous monitoring of manual single-point multiple measurement in the prior art, as well as the shortcomings of existing probes, such as inability to automatic monitoring, discontinuous data, and inability to flexible on-site splicing to any length, the utility model provides a kind of multi-point series formula side slope displacement automatic monitoring device.

[0005] The technical scheme provided by the utility model embodiment is as follows:

[0006] The utility model discloses a kind of slope displacement automatic monitoring devices of multipoint series connection, comprising: inclination angle measuring unit, series connection hinge, guide rail pipe, fixed ring, orifice support, gravity telescopic deformation meter, communication line, RS485 data interaction module, station radio, 4G module and PC end monitoring system;

[0007] The inclination angle measuring unit is placed in the guide rail pipe, and the inclination angle measuring units are connected in series through the series connection hinge, and the top end of the inclination angle measuring unit is suspended in the orifice through the orifice support.

[0008] The guide rail pipe is installed in the rock-soil body measuring hole and serves as the moving track of the inclination angle measuring unit.

[0009] The inclination angle measuring unit includes an inclination sensor, a skeleton and a pulley.

[0010] The inclination sensor is used to measure the angles in X, Y and Z directions at one time.

[0011] The skeleton is used to support the inclination sensor.

[0012] The pulley includes a pulley support and a pulley bearing, and the pulley support is used to support the pulley bearing.

[0013] The inner wall of the guide rail pipe is provided with a groove.

[0014] The pulley bearing slides in the groove of the guide rail pipe.

[0015] The gravity telescopic deformation meter is hinged to the inclination angle measuring unit at the lowermost end.

[0016] The communication line connects the lines of each inclination angle measuring unit in parallel.

[0017] The RS485 data interaction module receives the data of the communication line at the orifice.

[0018] The station radio controls multiple RS485 data interaction modules in a region through wireless mode and receives the data of the multiple RS485 data interaction modules.

[0019] The 4G module uploads the data of the station radio to the Internet.

[0020] The PC end monitoring system receives the angle data of the inclination angle measuring units in each measuring hole of each station radio in the Internet, and converts the angle data into displacement data in real time.

[0021] The technical scheme provided by the utility model embodiment has at least the following beneficial effects:

[0022] In the utility model, the multiple-point series type slope displacement automatic monitoring device realizes the automatic collection and transmission of the inclination angle data of multiple points in the same measuring hole, and the gravity type telescopic deformation meter designed at the hole bottom realizes the synchronous monitoring of the vertical displacement, and an integrated monitoring system of horizontal and vertical displacement fields is constructed; the monitoring method can identify each measuring unit, sends instructions to all measuring units and receives data, realizes the saving and analysis of multiple hole data and the real-time generation of displacement curves, the automatic monitoring improves the monitoring efficiency and reduces the monitoring cost; each inclination angle measuring unit can be freely assembled into any length on site, and after being taken out from the guide rail pipe, can be reused, solves the problems of time-consuming, large data fluctuation and unable to realize real-time continuous monitoring in manual single-point multiple measurement, and the shortcomings of the existing probe such as unable to realize automatic monitoring, discontinuous data and unable to be flexibly spliced into any length on site, and can be widely applied to the slope engineering rock mass instability process monitoring and early warning. BRIEF DESCRIPTION OF DRAWINGS

[0023] In order to more clearly illustrate the technical scheme in the embodiment of the utility model, the drawings needed to be used in the embodiment description will be briefly introduced, and obviously, the drawings in the following description are only some embodiments of the utility model, and other drawings can be obtained according to these drawings without creating labor for those skilled in the art.

[0024] Figure 1 The system architecture schematic diagram of the multiple-point series type slope displacement automatic monitoring device provided in the embodiment of the utility model is shown in the figure.

[0025] Figure 2 The overall structure schematic diagram of the inclination angle measuring unit provided in the embodiment of the utility model is shown in the figure, wherein (a) is the front view, and (b) is the left view.

[0026] Figure 3 The skeleton schematic diagram of the inclination angle measuring unit provided in the embodiment of the utility model is shown in the figure, wherein (a) is the front view, and (b) is the left view.

[0027] Figure 4 The pulley structure schematic diagram in the inclination angle measuring unit provided in the embodiment of the utility model is shown in the figure, wherein (a) is the front view, and (b) is the plan view.

[0028] Figure 5 The structure schematic diagram of the steel torsion spring in the pulley provided in the embodiment of the utility model is shown in the figure, wherein (a) is the front view, and (b) is the left view.

[0029] Figure 6 The structure schematic diagram of the series hinge provided in the embodiment of the utility model is shown in the figure, wherein (a) is the front view, and (b) is the left view.

[0030] Figure 7 A structure schematic view of a gravity type telescopic deformation meter provided by the utility model embodiment;

[0031] Figure 8 A structure schematic view of an orifice support provided by the utility model embodiment;

[0032] Figure 9 A cumulative horizontal displacement calculation principle diagram provided by the utility model embodiment;

[0033] Figure 10 A vertical displacement calculation principle diagram provided by the utility model embodiment.

[0034] REFERENCE NUMERALS

[0035] 1, measurement point composed of multiple measurement units; 2, inclination angle measurement unit; 201, inclination sensor; 202, skeleton; 203, pulley; 204, steel torsional spring; 205, communication line; 206, skeleton screw hole; 207, pulley bearing; 208, pulley support; 209, skeleton screw rod; 210, skeleton positioning column; 211, series hinge; 3, gravity type telescopic deformation meter; 301, cylindrical stainless steel block; 302, telescopic deformation sensor; 303, telescopic rod; 304, connecting ball head; 4, orifice support; 401, support; 402, long screw rod; 403, screw hole; 404, wire outlet hole; 405, fixing ring; 406, nut; 5, guide rail pipe; 6, filling material; 7, hole wall; 8, RS485 data interaction module; 9, station radio; 10, 4G module; 11, PC end monitoring system. DETAILED DESCRIPTION

[0036] The lower limb structure of the two-foot walking robot capable of standing vertically provided by the utility model will be described in detail below in combination with the drawings and specific embodiments. Meanwhile, it is explained here that, in order to make the embodiments more detailed, the following embodiments are the best, preferred embodiments, and other alternative ways can also be adopted by those skilled in the art to implement some known technologies; and the drawings are only used to describe the embodiments more specifically, and are not intended to specifically limit the utility model.

[0037] It should be noted that, in the specification, "one embodiment", "embodiment", "exemplary embodiment", "some embodiments" and the like indicate that the embodiments described can include specific features, structures or characteristics, but not necessarily every embodiment includes the specific features, structures or characteristics. In addition, when a specific feature, structure or characteristic is described in combination with an embodiment, it should be within the knowledge of those skilled in the related art to realize this feature, structure or characteristic in combination with other embodiments (whether or not explicitly described).

[0038] Generally, terms can be understood to be contextually defined from usage. For example, the term "one or more" as used herein, depending at least in part on context, can be used to describe any feature, structure, or characteristic in the singular or can be used to describe combinations of features, structures or characteristics, in the plural, depending at least in part on context. Further, the term "based on" can be understood as not necessarily requiring exclusively derived factors, but instead can allow for the existence of other non-specified factors, depending at least in part on context.

[0039] Referring to the drawings accompanying the specification Figure 1 , a system architecture schematic diagram of a multi-point series type slope displacement automatic monitoring device is shown.

[0040] Referring to the drawings accompanying the specification Figure 2 , a whole structure schematic diagram of an inclination angle measuring unit is shown, wherein (a) is a front view, and (b) is a left view.

[0041] The utility model embodiment provides a kind of multi-point series type slope displacement automatic monitoring device, comprising: inclination angle measuring unit 2, series hinge 211, guide rail pipe 5, fixed ring 405, orifice support 4, gravity type telescopic deformation meter 3, communication line 205, RS485 data interaction module 8, station radio 9, 4G module 10 and PC end monitoring system 11.

[0042] Inclination angle measuring unit 2 is placed in guide rail pipe 5, inclination angle measuring unit 2 is connected in series by series hinge 211, and the top end of inclination angle measuring unit 2 is hung in orifice by orifice support 4.

[0043] Guide rail pipe 5 is installed in rock-soil body measuring hole and is used as the moving track of inclination angle measuring unit 2.Filling material 6 can be used to fill the gap between guide rail pipe 5 and hole wall 7.

[0044] Inclination angle measuring unit 2 includes inclination sensor 201, framework 202 and pulley 203.

[0045] Inclination sensor 201 is used to measure the angle of X, Y and Z directions once.

[0046] Framework 202 is used to support inclination sensor 201.

[0047] Pulley 203 includes pulley support 208 and pulley bearing 207, and pulley support 208 is used to support pulley bearing 207.

[0048] The inner wall of guide rail pipe 5 is provided with groove.

[0049] Pulley bearing 207 slides in the groove of guide rail pipe 5.

[0050] The gravity telescopic deformation gauge 3 is hinged with the lowermost tilt angle measuring unit 2.

[0051] The communication line 205 connects the lines of each tilt angle measuring unit 2 in parallel.

[0052] The RS485 data interaction module 8 receives the data of the communication line at the orifice.

[0053] The station radio 9 controls multiple RS485 data interaction modules 8 in a region by wireless mode and receives the data of the multiple RS485 data interaction modules 8.

[0054] The 4G module 10 uploads the data of the station radio 9 to the Internet.

[0055] The PC terminal monitoring system 11 receives the angle data of the tilt angle measuring unit 2 in each measuring hole of each station radio 9 in the Internet and converts the angle data into displacement data in real time.

[0056] In a possible implementation, the tilt angle measuring unit 2 is used to monitor the angle change of the guide pipe 5, and the tilt angle measuring unit 2 has a unique IP address.

[0057] In a possible implementation, the skeleton 202 has a series of hinge mounting holes at both ends. The skeleton 202 includes two tilt angle measuring units 2, and the series of hinges 211 connects the two tilt angle measuring units 2 end to end. The series of hinges 211 disassembles the tilt angle measuring units 2 into single sections, and the series of hinges 211 is used to assemble the tilt angle measuring units 2. The tilt angle measuring units 2 are reused after being taken out of the guide pipe 5.

[0058] In a possible implementation, the skeleton 202 is provided with a pulley 203 at both ends.

[0059] In a possible implementation, the tilt angle measuring unit 2 includes an inclination sensor 201, a skeleton 202, a pulley 203, a steel torsion spring 204, a communication line 205, a skeleton screw hole 206, a pulley bearing 207, a pulley support 208, a skeleton screw rod 209, a skeleton positioning column 210, and a series of hinges 211. The inclination sensor 201 is fixed in the middle of the skeleton 202, the skeleton screw rod 209 and the skeleton positioning column 210 pass through the skeleton screw hole 206 to connect the two skeletons 202 together to form an overall support structure. The pulley 203 is fixed in the skeleton for supporting the skeleton in the guide pipe 5 and is centered in the hole. The steel torsion spring 204 provides support force in the rotation process of the pulley 203. The communication line 205 is arranged on the skeleton 202 and connected with the line of each inclination sensor 201. The series of hinges 211 is arranged at the end of the skeleton 202 and used to connect the two tilt angle measuring units 2.

[0060] Referring to the accompanying drawings Figure 3 , a skeleton diagram of the inclination angle measuring unit is shown, wherein (a) is a front view, and (b) is a left view.

[0061] Optionally, a plurality of skeleton screw holes 206 are arranged on the skeleton 202, used for penetrating the skeleton screw rod 209, and serving as a support structure of the steel torsion spring 204.

[0062] Referring to the accompanying drawings Figure 4 , a pulley structure diagram in the inclination angle measuring unit is shown, wherein (a) is a front view, and (b) is a top view.

[0063] Optionally, the pulley 203 comprises a pulley bracket 208 and a pulley bearing 207, used for sliding the inclination angle measuring unit 2 in the guide rail pipe 5.

[0064] Referring to the accompanying drawings Figure 5 , a structure diagram of the steel torsion spring in the pulley is shown, wherein (a) is a front view, and (b) is a left view.

[0065] Optionally, the steel torsion spring 204 is fixed in the skeleton 202 by penetrating the skeleton screw rod 209 inside the skeleton screw rod 209, one end of the steel torsion spring 204 is supported on another skeleton screw rod 209, and the other end of the steel torsion spring 204 is supported on the pulley bracket 208, forming a counter-force system, used for supporting the contraction of the pulley 203 in the rail pipe.

[0066] Referring to the accompanying drawings Figure 6 , a structure diagram of the series connection hinge is shown, wherein (a) is a front view, and (b) is a left view.

[0067] Optionally, one end of the series connection hinge 211 is fixedly connected with the skeleton 202 by adopting three skeleton screw rods 209, and the other end of the series connection hinge 211 is connected with the skeleton 202 of another inclination angle measuring unit 2 by adopting one skeleton screw rod 209, and can rotate.

[0068] In a possible implementation, the fixing ring 405 is connected with the uppermost inclination angle measuring unit 2 through the series connection hinge 211, the fixing ring 405 is connected with the orifice bracket 4, the orifice bracket 4 is connected with the concrete block fixed in the orifice soil body, the orifice bracket 4 is provided with the skeleton screw rod 209, the skeleton screw rod 209 is used for adjusting the vertical position of the inclination angle measuring unit 2 up and down, and the inclination angle measuring unit 2 is integrated with the skeleton screw rod 209 after installation.

[0069] Referring to the accompanying drawings Figure 8Figure 1 shows a structural schematic diagram of the orifice support provided by the embodiment of the present application.

[0070] Optionally, the orifice support 4 comprises a support 401, a long screw rod 402, a screw hole 403, a wire outlet hole 404, a fixing ring 405 and a nut 406. The support 401 fixes the whole support 4 on the concrete base of the orifice. The wire outlet hole 404 is used to lead the communication line 205 out of the hole. The long screw rod 402 passes through the screw hole 403 and can realize the up and down movement of itself by rotating. The fixing ring 405 is used to connect the top inclination angle measuring unit 2. The long screw rod 402 is used to control the up and down position of the inclination angle measuring unit 2, so that the whole measurement system composed of multiple inclination angle measuring units 2 can move up and down, and the lowest gravity type telescopic deformation meter 3 is adjusted to be in a suitable position.

[0071] In a possible implementation, the gap between the guide rail pipe 5 and the drilling hole wall 7 is filled with cement soil slurry, and the outer side of the guide rail pipe 5 is wrapped with a smooth film, which is used to make the guide rail pipe 5 vertically slide in the cement soil.

[0072] Figure 2 shows a structural schematic diagram of the gravity type telescopic deformation meter provided by the embodiment of the present application. Figure 7

[0073] In a possible implementation, the gravity type telescopic deformation meter 3 is hinged with the lowest inclination angle measuring unit 2. The gravity type telescopic deformation meter 3 is used to measure the vertical displacement of the lowest inclination angle measuring unit 2. The displacement data output by the gravity type telescopic deformation meter 3 is an RS485 signal, and is connected to the communication line 205. The lower part of the gravity type telescopic deformation meter 3 is fixed with a cylindrical stainless steel block 301, the gravity of the cylindrical stainless steel block 301 is greater than the tension required for the deformation of the gravity type telescopic deformation meter 3. The cylindrical stainless steel block 301 is in contact with the hole bottom but is not bonded with the hole bottom, so as to ensure that the lower connecting ball head 304 does not move up and down. When the stroke of the gravity type telescopic deformation meter 3 reaches the limit, the cylindrical stainless steel block 301 is separated from the hole bottom. So as to take out the inclination angle measuring unit 2 from the hole. The cylindrical stainless steel block 301 is not connected with the bottom of the drilling hole, so as to ensure that the whole measurement device can be taken out from the hole.

[0074] In a possible implementation, the communication line 205 has the same length as each inclination angle measuring unit 2. The communication line 205 is connected by using waterproof aviation plug connectors. The communication line 205 is disassembled together with each inclination angle measuring unit 2. The communication line 205 is a line bus. The communication line 205 passes through the side of the multiple inclination angle measuring units 2, and the lines of each inclination angle measuring unit 2 are connected in parallel in the communication line 205. The communication line 205 is connected with the RS485 data interaction module 8 at the orifice.

[0075] ​In a possible implementation, the RS485 data interaction module 8 is used to identify the IP address of each tilt angle measurement unit 2 and forward instructions or receive data for each tilt angle measurement unit 2. The RS485 data interaction module 8 is arranged at the borehole. The RS485 data interaction module 8 accesses multiple tilt angle measurement units 2. The RS485 data interaction module 8 is a measuring point 1 at the borehole.

[0076] In a possible implementation, the station radio 9 controls multiple RS485 data interaction modules 8. The station radio 9 sends instructions to the multiple RS485 data interaction modules 8. The station radio 9 receives data from the multiple RS485 data interaction modules 8.

[0077] In a possible implementation, the PC monitoring system 11 receives angle data of the tilt angle measurement unit 2 in each measuring hole of each station on the Internet. The PC monitoring system 11 converts the received angle data into displacement data in real time and draws a displacement change curve. The PC monitoring system 11 supports one-to-many sending instructions, which include sending instructions to all tilt angle measurement units 2 at one time and receiving returned data, and supports automatic online real-time data collection.

[0078] Optionally, the PC monitoring system 11 converts the received angle data into horizontal displacement and vertical displacement data in real time according to the following calculation process:

[0079]

[0080]

[0081] wherein, l i is the length of the i-th tilt angle measurement unit, θ ix is the tilt angle of the i-th tilt angle measurement unit in the x direction, D x is the cumulative displacement in the x direction, θ iy is the tilt angle of the i-th tilt angle measurement unit in the y direction, D y is the cumulative displacement in the y direction, is the cumulative displacement change of the tilt sensor in the z direction due to the inclination of the guide rail pipe at each point, D xy is the cumulative displacement in the x and y directions, is the slope angle of the i-th tilt angle measurement unit in the z direction; θ iz is the tilt angle of the i-th tilt angle measurement unit in the z direction.

[0082] Optionally, the PC monitoring system 11 converts the displacement data of the gravity extensometer 3 into vertical displacement according to the following calculation formula:

[0083]

[0084]

[0085] wherein, is the vertical displacement of the bottommost tilt sensor, is the telescopic length of the gravity telescopic extensometer, which contains the vertical displacement due to the settlement of the orifice and the inclination of the guide pipe, D z is the vertical displacement of the orifice, and θ1 is the inclination angle of the bottommost inclination angle measuring unit.

[0086] Optionally, the PC monitoring system 11 calculates the direction of the soil movement in real time according to the received angle data as follows:

[0087]

[0088] wherein, is the vector in the x direction. is the vector in the y direction. is the vector sum of the vectors in the x and y directions, i.e. the direction of the soil movement.

[0089] Reference is made to the accompanying drawings Figure 9 and the accompanying drawings Figure 10 , which are respectively the calculation principle diagrams of the accumulated horizontal displacement and the vertical displacement provided by the embodiments of the utility model. The data of each inclination angle measuring unit 2 is accumulated to obtain the total displacement by taking the bottom sensor as the reference.

[0090] In summary, the main innovations of the utility model are as follows: (1) the device realizes the automatic collection and remote transmission of the displacement data of multiple points in the same measuring hole, one measuring hole serves as one measuring point, and multiple measuring points form one measuring station. (2) Each inclination angle measuring unit in the device is designed with a unique IP address, the RS485 data interaction module can identify each measuring unit, and send instructions and receive data to all measuring units, realizing the one-to-many software and hardware control technology. (3) The inclination angle measuring unit in the device can measure the angles of the X, Y and Z axes at the same time, wherein the X axis is used to calculate the horizontal displacement of each point in the X direction, the Y axis is used to calculate the horizontal displacement of each point in the Y direction, and the Z axis is the displacement change of the tilt sensor in the Z direction due to the inclination of the guide pipe at each point. Combined with the data of the gravity telescopic extensometer, the vertical displacement of the orifice and each point can be calculated. (4) The gravity telescopic extensometer is designed at the bottom of the hole, realizing the collaborative monitoring of the vertical displacement of the hole bottom and constructing an integrated monitoring method of the horizontal and vertical displacement fields. (5) Each inclination angle measuring unit can be freely assembled into any length on site, and can be reused after being taken out from the guide pipe. (6) The monitoring system realizes the functions of saving and analyzing the data of multiple measuring holes and generating displacement curves in real time.

[0091] The beneficial effects brought by the technical scheme provided by the embodiment of the utility model at least include:

[0092] In the utility model, the multi-point series type slope displacement automatic monitoring device realizes the automatic collection and transmission of the inclination angle data of multiple points in the same measuring hole, and the gravity type telescopic deformation meter designed at the hole bottom realizes the synchronous monitoring of the vertical displacement, and an integrated monitoring system of horizontal and vertical displacement fields is constructed. The monitoring method can identify each measuring unit, and sends instructions to all measuring units and receives data, realizes the saving and analysis of multiple hole data and the real-time generation of displacement curves, and the automatic monitoring improves the monitoring efficiency and reduces the monitoring cost. Each inclination angle measuring unit can be freely assembled into any length on site, and can be reused after being taken out from the guide rail pipe, solves the problems of time-consuming, large data fluctuation and unable to realize real-time continuous monitoring in manual single-point multiple measurement, and the shortcomings of the existing probe, such as unable to realize automatic monitoring, discontinuous data and unable to be flexibly spliced into any length on site, and can be widely applied to the slope engineering rock mass instability process monitoring and early warning.

[0093] The specific way of slope displacement monitoring by using the multi-point series type slope displacement automatic monitoring device in the above embodiment will be introduced below.

[0094] S1: the guide rail pipe is placed in the on-site drilled hole, and the gap between the guide rail pipe and the hole wall is filled with filling material, and after solidification for about 24 hours, the next step operation is prepared.

[0095] S2: the gravity type telescopic deformation meter 3 is installed at the bottom of the first inclination angle measuring unit 2, and the line thereof is connected to the communication line 205, the remaining inclination angle measuring units 2 are connected in series by using the series hinge 211 in turn, and the lines of each inclination angle measuring unit 2 are connected in parallel to the communication line 205. After the series connection is completed, the inclination angle measuring unit 2 at the top is connected to the fixed ring 405 in the hole opening support 4, and the series connection device is obtained.

[0096] S3: the series connection device is placed in the guide rail pipe, and the hole opening support 4 is fixed at the hole opening, the whole series connection device is adjusted to the appropriate position by adjusting the long screw rod 402, the appropriate position is that the indication of the gravity type telescopic deformation meter 3 is at the half range, and the X direction and Y direction of the sensor are positioned and recorded by using the compass.

[0097] S4: the RS485 data interaction module 8 is arranged at the hole opening, the communication line 205 is connected to the terminal post, and the waterproof rain cover is used to prevent rainwater from entering.

[0098] S5: the station radio 9 is arranged in the indoor within a range of 5 kilometers, the station radio is connected to the computer through the RS485 to USB module, and the serial port software is opened to debug the reading.

[0099] S6: Connect the 4G module 10 to the station radio 9, complete the data into the network.

[0100] S7: Open the PC monitoring system 11 to start reading data, and the first reading data as a reference for zero operation, the received angle data real-time conversion of x direction displacement data and y direction displacement data:

[0101]

[0102]

[0103] Where, l i is the length of the i-th segment of the tilt angle measurement unit, θ ix is the tilt angle of the i-th segment of the tilt angle measurement unit in the x direction, D x is the cumulative displacement in the x direction, θ iy is the tilt angle of the i-th segment of the tilt angle measurement unit in the y direction, D y is the cumulative displacement in the y direction, is the cumulative displacement change of the tilt sensor in the z direction due to the tilt of the guide pipe, D xy is the cumulative displacement in the x and y directions, is the slope angle of the i-th segment of the tilt angle measurement unit in the z direction; θ iz is the tilt angle of the i-th segment of the tilt angle measurement unit in the z direction.

[0104] S8: Convert the displacement data of the gravity type telescopic deformation meter to z direction displacement data.

[0105] It should be noted that the PC monitoring system converts the displacement data of the gravity type telescopic deformation meter to vertical displacement calculation principle as follows:

[0106]

[0107]

[0108] Where, is the vertical displacement of the bottommost tilt sensor, is the telescopic length of the gravity type telescopic deformation meter, which contains the vertical displacement due to the orifice settlement and the guide pipe tilt, D z is the vertical displacement of the orifice, θ1 is the tilt angle of the bottommost tilt angle measurement unit.

[0109] Further, the PC monitoring system calculates the direction of the soil movement in real time as follows:

[0110]

[0111] Where, is a vector in the x direction. is a vector in the y direction. is a vector sum in the x and y directions, i.e.

[0112] The above steps are completed to realize real-time automatic long-term monitoring of slope displacement.

[0113] The technical scheme provided by the embodiment of the utility model has at least the following beneficial effects:

[0114] In the utility model, the multi-point series type slope displacement automatic monitoring device realizes automatic collection and transmission of the inclination data of multiple points in the same measuring hole, and a gravity type telescopic deformation meter is designed at the hole bottom to realize synchronous monitoring of the vertical displacement, and an integrated monitoring system of horizontal and vertical displacement fields is constructed. The monitoring method can identify each measuring unit, send instructions to all measuring units and receive data, realize saving and analysis of multiple hole data and real-time generation of displacement curves, and the automatic monitoring improves the monitoring efficiency and reduces the monitoring cost. Each inclination angle measuring unit can be freely assembled into any length on site, and can be reused after being taken out from the guide rail pipe, which solves the problems of time-consuming, large data fluctuation and inability of real-time continuous monitoring in manual single-point multiple measurement, and solves the problems of inability of automatic monitoring, discontinuous data and inability of flexible on-site splicing into any length of the existing probe, and can be widely applied to slope engineering rock mass instability process monitoring and early warning.

[0115] The utility model covers any substitution, modification, equivalent method and scheme made on the essence and range of the utility model. In order to make the public have a thorough understanding of the utility model, specific details are explained in detail in the preferred embodiment of the utility model, and the utility model can be completely understood without the description of these details for the person skilled in the art. In addition, in order to avoid unnecessary confusion to the essence of the utility model, well-known methods, processes, procedures, elements and circuits are not explained in detail.

[0116] The above only describes the preferred embodiment of the utility model, and it should be pointed out that, for the ordinary skilled person in the technical field, some improvements and refinements can be made without departing from the principle of the utility model, and these improvements and refinements should also be regarded as the protection range of the utility model.

Claims

1. A multi-point series type slope displacement automatic monitoring device, characterized in that, The application relates to a multi-point serial slope displacement automatic monitoring device. The tilt angle measuring unit is placed in the guide rail pipe, the tilt angle measuring units are connected in series through the serial hinge, and the top end of the tilt angle measuring unit is hung in an orifice through the orifice support. The guide rail pipe is installed in a rock-soil hole and serves as a moving track of the tilt angle measuring unit. The tilt angle sensor is used for measuring the angles of X, Y and Z directions at one time. The skeleton is used for supporting the tilt angle sensor. The pulley support is used for supporting the pulley bearing. The inner wall of the guide rail pipe is provided with a groove. The pulley bearing slides in the groove of the guide rail pipe. The gravity telescopic deformation meter is hinged with the lowermost tilt angle measuring unit. The communication lines of each tilt angle measuring unit are connected in parallel. The RS485 data interaction module receives the data of the communication lines in the orifice. The station radio controls multiple RS485 data interaction modules in a region through wireless mode and receives the data of the multiple RS485 data interaction modules. The 4G module uploads the data of the station radio to the Internet. The PC terminal monitoring system receives the angle data of the tilt angle measuring units in each hole of each station radio in the Internet and converts the angle data into displacement data in real time. The tilt angle measuring unit is used for monitoring the angle change of the guide rail pipe, and the tilt angle measuring unit has a unique IP address.

3. The multi-point serial slope displacement automatic monitoring device according to claim 1, wherein 2. The multi-point series connection type slope displacement automatic monitoring device according to claim 1, characterized in that, The skeleton is provided with serial hinge installation holes at both ends. The skeleton comprises two tilt angle measuring units, and the serial hinge connects the two tilt angle measuring units in a head-to-tail mode. The serial hinge is used for disassembling and assembling the tilt angle measuring units. The tilt angle measuring unit can be repeatedly used after being taken out of the guide rail pipe. The skeleton is provided with pulleys at both ends. The fixed ring is connected with the uppermost tilt angle measuring unit through the serial hinge, the fixed ring is connected with the orifice support, the orifice support is connected with a concrete block fixed in the orifice soil body, the orifice support is provided with a skeleton screw rod, the skeleton screw rod is used for adjusting the vertical position of the tilt angle measuring unit, and the tilt angle measuring unit is integrated with the skeleton screw rod after installation. The gap between the guide rail pipe and the hole wall is filled with cement soil slurry, the outer side of the guide rail pipe is wrapped with a smooth film, and the smooth film is used for making the guide rail pipe vertically slide in the cement soil.

4. The multi-point series connection type slope displacement automatic monitoring device according to claim 1, characterized in that, The gravity telescopic deformation meter is hinged with the lowermost tilt angle measuring unit.

5. The multi-point series connection type slope displacement automatic monitoring device according to claim 1, characterized in that, ​ 6. The multi-point series connection type slope displacement automatic monitoring device according to claim 1, characterized in that, ​ The gravity telescopic deformation meter is used for measuring the vertical displacement of the lowermost inclination angle measuring unit; The gravity telescopic deformation meter has a lower fixed cylindrical stainless steel block, and the gravity of the cylindrical stainless steel block is greater than the tension required for deformation of the gravity telescopic deformation meter; The cylindrical stainless steel block is in contact with the bottom of the hole; When the stroke of the gravity telescopic deformation meter reaches the limit, the cylindrical stainless steel block is separated from the bottom of the hole.

7. The multi-point series connection type slope displacement automatic monitoring device according to claim 1, characterized in that, The communication line has the same length as each inclination angle measuring unit; the communication line adopts a waterproof aviation plug connector for docking; the communication line is detached together with each inclination angle measuring unit; the communication line is a line bus; the communication line passes through the side of each inclination angle measuring unit, and the lines of each inclination angle measuring unit are connected in parallel in the communication line; the communication line is connected to the RS485 data interaction module at the hole; The RS485 data interaction module is used for identifying the IP address of each inclination angle measuring unit and forwarding instructions or receiving data of each inclination angle measuring unit; the RS485 data interaction module is arranged at the hole; the RS485 data interaction module accesses multiple inclination angle measuring units; the RS485 data interaction module serves as a measuring point at the hole; The measuring station radio station controls multiple RS485 data interaction modules; the measuring station radio station sends instructions to multiple RS485 data interaction modules; the measuring station radio station receives data of multiple RS485 data interaction modules.

8. The multi-point series connection type slope displacement automatic monitoring device according to claim 1, characterized in that, The PC terminal monitoring system receives angle data of the inclination angle measuring units in each measuring hole of each measuring station in the Internet; the PC terminal monitoring system converts the received angle data into displacement data in real time and draws a displacement change curve; The PC terminal monitoring system supports one-to-many sending instructions, which include sending instructions to all inclination angle measuring units at one time and receiving returned data, and supports automatic online real-time data acquisition.

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