CN112362031B - Inclination angle sensor for landslide measurement and use method thereof - Google Patents
Inclination angle sensor for landslide measurement and use method thereof Download PDFInfo
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- CN112362031B CN112362031B CN202011271721.8A CN202011271721A CN112362031B CN 112362031 B CN112362031 B CN 112362031B CN 202011271721 A CN202011271721 A CN 202011271721A CN 112362031 B CN112362031 B CN 112362031B
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- landslide
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C9/00—Measuring inclination, e.g. by clinometers, by levels
- G01C9/18—Measuring inclination, e.g. by clinometers, by levels by using liquids
- G01C9/20—Measuring inclination, e.g. by clinometers, by levels by using liquids the indication being based on the inclination of the surface of a liquid relative to its container
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/02—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B13/00—Measuring arrangements characterised by the use of fluids
- G01B13/02—Measuring arrangements characterised by the use of fluids for measuring length, width or thickness
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C9/00—Measuring inclination, e.g. by clinometers, by levels
- G01C9/02—Details
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Abstract
The invention discloses an inclination angle sensor for landslide measurement and a using method thereof, wherein the inclination angle sensor for landslide measurement comprises a cylindrical shell, liquid is filled in an inner cavity of the cylindrical shell, a cylinder opening end of the cylindrical shell is connected with a sensor seat, and a CCD camera is arranged on the sensor seat; the use method of the inclination angle sensor for landslide measurement comprises the following steps: drilling holes in rock-soil bodies where landslide is likely to occur; mounting an inclination angle sensor for landslide measurement on an inclinometer pipe and then placing the inclinometer pipe at the bottom of a drill hole; connecting data lines of all sensors to a terminal to obtain initial angle data; switching on the power supply again at intervals, recording output data of all the sensors, and obtaining actual angle data of the time period; and calculating the horizontal displacement of the whole landslide body by using the actual angle data measured in each time period. The method solves the technical problem that in the prior art, when the electronic compass is used for measuring the landslide displacement of the landslide body containing ferromagnetic interference, the error is large and even an error result can be obtained.
Description
Technical Field
The invention relates to the technical field of landslide measurement, in particular to a sensor capable of measuring displacement of a landslide body in real time and a using method thereof.
Background
China is a country with a lot of landslide disasters. Landslide disasters often cause destructive disasters such as casualties, road burial, house damage and the like, and seriously threaten the life and property safety of the nation and people, so that the real-time monitoring of deep displacement of landslide is very important. In a common landslide displacement monitoring method, a plurality of groups of angle or displacement sensors are buried in a landslide body for real-time measurement, and the real-time change condition of landslide displacement can be obtained by further calculation through measurement data.
Disclosure of Invention
In view of the above, the present invention provides an inclination angle sensor for landslide measurement and a method for using the same, so as to solve the technical problem of performing accurate angle measurement on a landslide body containing ferromagnetic interference.
The invention discloses a slope angle sensor for measuring landslide, which comprises a cylindrical shell, wherein an inner cavity of the cylindrical shell is cylindrical, liquid is filled in the inner cavity of the cylindrical shell, a cylinder opening end of the cylindrical shell is connected with a sensor seat, a CCD camera for acquiring a liquid level image of the liquid in the inner cavity of the cylindrical shell is arranged on the sensor seat, and the center line of the CCD camera is superposed with the center line of the inner cavity of the cylindrical shell.
Further, a transparent protective cover which is sleeved outside the CCD camera to isolate liquid in the inner cavity of the cylindrical shell is arranged at the front part of the sensor base, a sealing end cover is arranged at the rear part of the sensor base, and a cable waterproof joint connected with a data line of the CCD camera is arranged on the sealing end cover.
Further, a circular step hole is formed in the middle of the sensor base, the front portion of the CCD camera extends out of the front end of the circular step hole, a base pressed on the rear portion of the CCD camera is arranged in the circular step hole, a pressing cover pressed on the base is further arranged in the circular step hole and fixed on the sensor base through screws, a conical hole is formed in the middle of the base, a conical sealing sleeve sleeved on a data line of the CCD camera is arranged in the conical hole, and a conical boss pressed on the end face of the conical sealing sleeve is arranged in the middle of the pressing cover; the sealing end cover seals the opening of the round stepped hole, a first O-shaped sealing ring is arranged between the sealing end cover and the sensor seat, and a second O-shaped sealing ring is arranged between the sensor seat and the connecting part of the cylindrical shell.
Further, the liquid is composed of water and an antifreeze.
The invention relates to a using method of an inclination angle sensor for landslide measurement, which comprises the following steps:
drilling holes on a rock-soil body which is likely to slide;
secondly, after the drilling is finished, a drill rod is put out, an inclination angle sensor for landslide measurement is installed on the inclinometer pipe, and the inclinometer pipe is put down to the bottom of the drilling hole after the installation is finished;
thirdly, backfilling the gap between the drill hole and the inclinometer pipe by using rock soil the same as that of the landslide body;
fourthly, connecting the data lines of all the sensors to the terminal, recording the output data of all the sensors after the power is switched on to obtain initial angle data, and then switching off the power;
switching on the power supply again at intervals, recording output data of all sensors to obtain actual angle data of the time period, and then switching off the power supply;
and sixthly, calculating to obtain the horizontal displacement of the whole sliding mass by utilizing the actual angle data measured in each time period and combining the initial angle data.
The invention has the beneficial effects that:
the inclination angle sensor for measuring landslide and the using method thereof, provided by the invention, the liquid in the cylindrical shell is photographed by the CCD camera, and the liquid boundary is obtained by subsequent image processing; when the sensor is inclined, the liquid boundary is elliptical, the long axis of the ellipse can be obtained through subsequent graphic processing, and the values of the long axis are different when the inclination angles are different, so that the inclination angle of the sensor can be calculated, and the real-time change condition of the landslide displacement can be obtained through calculation according to detection data at different moments.
The inclination angle sensor for measuring the landslide and the using method thereof are not influenced by electromagnetic interference, and the technical problem that an error is large and even an error result can be obtained when an electronic compass is adopted to measure the landslide displacement of a landslide body containing ferromagnetic interference in the prior art is solved.
Drawings
Fig. 1 is a schematic structural diagram of a slope angle sensor for measuring landslide in the embodiment.
Detailed Description
The invention is further described below with reference to the figures and examples.
As shown in the figure, the inclination angle sensor for measuring the landslide comprises a cylindrical shell 1, wherein an inner cavity 2 of the cylindrical shell is cylindrical, liquid 3 is filled in the inner cavity of the cylindrical shell, a cylinder opening end of the cylindrical shell is connected with a sensor seat 4, a CCD camera 5 used for collecting liquid level images of the liquid in the inner cavity of the cylindrical shell is arranged on the sensor seat, and the central line of the CCD camera coincides with the central line of the inner cavity of the cylindrical shell.
The cylindrical shell in the embodiment is made of stainless steel materials, so that the strength is good, the corrosion resistance is good, the service life of the sensor can be ensured, and the cylindrical shell can be made of the materials in different embodiments.
The principle of the inclination angle sensor for measuring the landslide in the embodiment is as follows:
when the sensor is vertically placed, the liquid is photographed by the CCD camera and the liquid surface boundary can be obtained through subsequent image processing, and the liquid surface boundary in the sensor is circular when the sensor is vertically placed, so that the circular represents no inclination; when the sensor is inclined, the liquid level is photographed through the 10-CCD camera and the liquid level boundary can be obtained through subsequent image processing, because the liquid level boundary is oval during the inclination, the long axis of the oval can be obtained through the subsequent image processing, and the values of the long axes are different when the inclination angles are different, so that the inclination angle of the sensor can be calculated.
As an improvement to the above embodiment, the front part of the sensor base is provided with a transparent protective cover 6 which is sleeved outside the CCD camera to isolate the liquid in the inner cavity of the cylindrical housing, the rear part of the sensor base is provided with a sealing end cover 7, and the sealing end cover is provided with a cable waterproof joint 8 connected with the data line of the CCD camera. The transparent protective cover of this embodiment adopts transparent PVC to make, and the light transmissivity is good, can not influence CCD camera and gather the image, and the transparent protective cover can also adopt other materials to make in different embodiments of course. Liquid is isolated through the transparent protective cover, so that the CCD camera can be prevented from being damaged by liquid vapor. The sealing end cover 7 is arranged to protect the CCD camera in the sensor seat.
As an improvement to the above embodiment, a circular stepped hole is provided in the middle of the sensor base, the front part of the CCD camera extends out of the front end of the circular stepped hole, a base 9 pressing on the rear part of the CCD camera is provided in the circular stepped hole, a gland 10 pressing on the base is further provided in the circular stepped hole, the gland is fixed on the sensor base by a screw, a conical hole is provided in the middle of the base, a conical sealing sleeve 11 sleeved on the data line of the CCD camera is provided in the conical hole, and a conical boss abutting on the end face of the conical sealing sleeve is provided in the middle of the gland; the sealing end cover seals the opening of the circular stepped hole, a first O-shaped sealing ring 12 is arranged between the sealing end cover and the sensor seat, and a second O-shaped sealing ring 13 is arranged between the connecting part of the sensor seat and the cylindrical shell. In this improvement, adopt base and gland to compress tightly fixedly to the CCD camera, the installation is simple and convenient. And waterproof sealing is carried out by arranging the conical sealing sleeve, the first O-shaped sealing ring and the second sealing ring, so that the CCD camera can be prevented from being damaged by water vapor invasion, and meanwhile, the liquid in the cylindrical shell can be prevented from evaporating and escaping.
In an improvement to the above embodiment, in the present embodiment, the liquid in the inner cavity of the cylindrical housing is composed of water and an anti-freezing solution, and the freezing point of the liquid is made lower by adding the anti-freezing solution, so that the sensor is suitable for use in a low-temperature environment.
The use method of the inclination angle sensor for measuring the landslide in the embodiment comprises the following steps:
drilling holes on a rock-soil body which is likely to slide; in the present embodiment the drilling depth reaches 10 meters below the bedrock, although in different embodiments the drilling depth may be adjusted as required.
And secondly, after the drilling is finished, the drill rod is put out, the inclination angle sensor for landslide measurement is installed on the inclinometer pipe, and the inclinometer pipe is put down to the bottom of the drill hole after the installation is finished. In the embodiment, the inclination angle sensors for measuring the landslide are arranged on the inclination measuring pipe every 3 meters, and the installation interval distance and the number of the sensors in different embodiments can be adjusted.
And thirdly, backfilling the gap between the drill hole and the inclinometer pipe by using rock soil the same as that of the landslide body.
And fourthly, connecting the data lines of all the sensors to the terminal, recording the output data of all the sensors after the power supply is switched on to obtain initial angle data, and then switching off the power supply.
And fifthly, switching on the power supply again at intervals, recording output data of all the sensors to obtain actual angle data of the time period, and then switching off the power supply.
And sixthly, calculating to obtain the horizontal displacement of the whole sliding mass by using the actual angle data measured in each time period and combining the initial angle data.
The inclination angle sensor for measuring the landslide and the using method thereof in the embodiment are not influenced by electromagnetic interference, and the technical problem that an error is large and even an error result can be obtained when an electronic compass is adopted to measure the landslide displacement of a landslide body containing ferromagnetic interference in the prior art is solved.
Finally, the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting, although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all of them should be covered in the claims of the present invention.
Claims (3)
1. Inclination sensor for landslide measurement, its characterized in that: the liquid level sensor comprises a cylindrical shell, wherein the inner cavity of the cylindrical shell is cylindrical, liquid is filled in the inner cavity of the cylindrical shell, a sensor seat is connected to the opening end of the cylindrical shell, a CCD camera for acquiring the liquid level image of the liquid in the inner cavity of the cylindrical shell is arranged on the sensor seat, and the central line of the CCD camera is superposed with the central line of the inner cavity of the cylindrical shell;
the front part of the sensor seat is provided with a transparent protective cover which is sleeved outside the CCD camera to isolate liquid in the inner cavity of the cylindrical shell, the rear part of the sensor seat is provided with a sealing end cover, and the sealing end cover is provided with a cable waterproof joint connected with a data line of the CCD camera;
the middle part of the sensor seat is provided with a circular step hole, the front part of the CCD camera extends out of the front end of the circular step hole, a base pressed on the rear part of the CCD camera is arranged in the circular step hole, a gland pressed on the base is also arranged in the circular step hole, the gland is fixed on the sensor seat through a screw, the middle part of the base is provided with a conical hole, a conical seal sleeve sleeved on a data line of the CCD camera is arranged in the conical hole, and the middle part of the gland is provided with a conical boss pressed on the end surface of the conical seal sleeve; the sealing end cover seals the opening of the circular stepped hole, a first O-shaped sealing ring is arranged between the sealing end cover and the sensor seat, and a second O-shaped sealing ring is arranged between the sensor seat and the connecting part of the cylindrical shell;
when the sensor is vertically placed, the liquid boundary is circular, which represents that no inclination occurs; when the liquid boundary is in an ellipse shape, the sensor is inclined, and the inclination angle of the sensor is calculated according to the major axis of the ellipse.
2. The tilt sensor for measuring a landslide of claim 1, wherein: the liquid consists of water and an anti-freezing solution.
3. Use of a tilt sensor for landslide measurements according to claim 1 or 2 comprising the steps of:
drilling holes on rock and soil mass which is likely to have landslide;
secondly, after the drilling is finished, a drill rod is put out, an inclination angle sensor for landslide measurement is installed on the inclinometer pipe, and the inclinometer pipe is put down to the bottom of the drill hole after the installation is finished;
thirdly, backfilling the gap between the drill hole and the inclinometer pipe by using rock soil the same as that of the landslide body;
fourthly, connecting the data lines of all the sensors to a terminal, recording the output data of all the sensors after the power supply is switched on to obtain initial angle data, and then switching off the power supply;
switching on the power supply again at intervals, recording output data of all sensors to obtain actual angle data of the time period, and then switching off the power supply;
and sixthly, calculating to obtain the horizontal displacement of the whole sliding mass by utilizing the actual angle data measured in each time period and combining the initial angle data.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011271721.8A CN112362031B (en) | 2020-11-13 | 2020-11-13 | Inclination angle sensor for landslide measurement and use method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011271721.8A CN112362031B (en) | 2020-11-13 | 2020-11-13 | Inclination angle sensor for landslide measurement and use method thereof |
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| Publication Number | Publication Date |
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| CN112362031A CN112362031A (en) | 2021-02-12 |
| CN112362031B true CN112362031B (en) | 2022-08-23 |
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| CN202011271721.8A Active CN112362031B (en) | 2020-11-13 | 2020-11-13 | Inclination angle sensor for landslide measurement and use method thereof |
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Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2003104748A1 (en) * | 2002-06-07 | 2003-12-18 | Leica Geosystem Ag | Optical inclinometer |
| CN101900548B (en) * | 2010-02-11 | 2012-07-25 | 浙江工业大学 | Omnibearing tilt sensor based on machine vision |
| JP6632128B2 (en) * | 2016-01-18 | 2020-01-15 | 株式会社トプコン | Method of designing container in liquid level reflection type tilt sensor, tilt sensor having the container, and method of producing tilt sensor having the container |
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