CN201034588Y - Rock bedding displacement monitoring instrument and system - Google Patents

Abstract

A strata displacement monitor is a displacement monitoring instrument among strata, which comprises a displacement sensor unit and an information acquisition and processing unit. The displacement sensor comprises a rotational grating ring connected on a displacement wheel, a fixed grating tablet, a tension line winded on the displacement wheel and a tightening structure that keeps the tension of the tension line. The information acquisition and processing unit comprises a photo coupler, an SCM control, a sound and light alarm, a wireless communication, a RS485 communication and a power conversion module. The shell of the strata displacement monitor is fixed on the surface strata, and the tension line is fixed on the internal strata; the linear displacement of the internal strata and the surface strata is accurately measured through an optical coupler measuring the interference fringes that is produced by the relative displacement of the grating ring and the grating tablet, and the displacement change rate can be measured. The strata displacement monitor can establish a system combining with a communication host and a remote controller; and the strata displacement monitor is used for field and remote real-time automatic monitoring of rock mass, tunnel roof, support cylinder etc. in coal mine, other mine and underground engineering.

Description

Strata displacement monitor and system

Technical field

The utility model relates to a kind of rock stratum section survey instrument, particularly relates to a kind of strata displacement monitor that can measure displacement between rock stratum and coal seam.

Background technology

At present, the sensor and the monitor kind that detect displacement in the engineering are more, differ from one another, its scope of application is respectively arranged, but, to building, water conservancy, road, rock mass in the exploitation in mine and the underground works, the automatic displace monitor of inside, rock stratum, tunnel and the instrument of forecast are rare, especially to high precision, the real-time automatic monitoring of big displacement almost is blank, for example, the impulsion pressure that the sudden change of roadway surrounding rock internal pressure causes in coal mining, digging is to top, tunnel (end) plate during the coal back production, rock stratum internal displacements such as coal column change the roof fall that causes, end distension, the security incident that rock burst etc. cause.So far still lack reliably, can real-time automatic monitoring and the instrument of forecast, especially in coal mining, still lack and realize on the ground continual real-time automatic monitoring of underworkings displacement and forecast.

I submit a kind of bed separation displacement monitor in No. 200610057248.7 patented claims (publication number is CN 1828220), utilize line of pull to affect displacement wheel, driving the grating ring rotates, utilize the grating between grating ring and the fixed grating sheet to move, change strata displacement is mechanical rotation, become grating interference strip again and change, further become isarithmic electronic signal, change thereby detect small strata displacement fast and accurately.

But there is following deficiency in actual applications in the bed separation displacement monitor according to above-mentioned application is made:

1, cylindrical outer casing is suitable for being embedded in rock mass inside, is installed in the work that influences sometimes in the tunnel;

2, it is complicated that displacement transducer unit and information detect processing unit layering mounting process in cylindrical outer casing;

3, the display on the shell is observed not very convenient in the tunnel;

4, the length limited of line of pull, useful range is less than 200mm.

The utility model content

For remedying above-mentioned deficiency, that the purpose of this utility model provides is simple in structure, be easy to produce, be easy to install, wieldy strata displacement monitor.

The utility model strata displacement monitor, comprise housing, line of pull, displacement wheel, the grating ring, the interference fringe testing agency that constitutes by lenticular lenses and photoelectrical coupler, be provided with displacement sensing unit and information acquisition processing unit in the described housing, described displacement transducer unit is made up of displacement converted mechanism and interference fringe testing agency, described displacement transducer unit is a vertical mounting support platform on the support circuit plate that is fixed on the housing, on described supporting station, establish a rotating shaft, install in the described rotating shaft and comprise the described displacement wheel that connects successively, transparent cylinder, the described displacement converted mechanism that the grating ring is formed, described grating ring set is on described transparent cylinder, described lenticular lenses is on described grating ring, described lenticular lenses is fixed on the described support circuit plate by column, on described support circuit plate, be provided with and comprise little circuit board corresponding to described grating ring position, be installed in the described interference fringe testing agency of photoelectrical coupler on the little circuit board, described grating ring and described lenticular lenses are inserted in described photoelectrical coupler groove the inside, described information acquisition processing unit comprises the single chip control module that is installed on the circuit board, the audible and visible alarm module, wireless communication module, RS485 communication module and power transfer module, the output of described photoelectrical coupler connects the input end of described single chip control module, the output terminal of described single chip control module connects described audible and visible alarm module respectively, wireless communication module and RS485 communication module, described circuit board is fixed on the described housing, outside described housing, be provided with the line of pull strainer, by be installed on the housing fixed mount and on stretching pulley and tensioning spring constitute, described stretching pulley is enclosed within on the axle that is fixed on the described fixed mount, described tensioning spring one end connects described stretching pulley, one end connects the axle of described supporting station, described line of pull is drawn from described stretching pulley, pass a sidewall of housing, on described displacement wheel, pass from the housing opposite side around at least one circle back.

The utility model strata displacement monitor, described rotating shaft runs through described supporting station, opposite side at described supporting station is equipped with same another set of described displacement sensing unit, the corresponding opposite side at described fixed mount is installed another set of described strainer, and the line of pull of described another set of strainer is being drawn behind at least one circle on the displacement wheel of described another set of displacement transducer.

The utility model strata displacement monitor, in the described displacement converted mechanism, described displacement wheel connects the driving wheel that is in described supporting station opposite side by described rotating shaft, in the described rotating shaft in the described driving wheel outside, be with engaged wheel and be fixed on described transparent cylinder on the described engaged wheel, bisection circumference place at described driving wheel establishes entad finedraw, one interlock sheet, one end is close on the circumference, the other end is converted into bending at corresponding finedraw place, and make bending in described finedraw, be pressed into or to eject, on described engaged wheel, fix one and drive driving lever, its other end is in the outer of described driving wheel, on described supporting circuit board, fix a return depression bar, its other end is pressed on the outer of described driving wheel, and return button spring is installed on the described engaged wheel, and its other end connects described rotating shaft, described grating ring is a semi-ring, on the half cycle of the described transparent cylinder that to be mounted on the described driving driving lever on the described engaged wheel be the starting point correspondence.

The utility model strata displacement monitor, on described support circuit plate, several supporting stations are set, several are installed by described displacement conversion sensing unit, corresponding several described strainers that outside described housing, is provided with, some line of pull is drawn from stretching pulley separately, on the displacement wheel of correspondence at least around a circle back from the housing suitable position pass.

Use the strata displacement monitoring system of above-mentioned strata displacement monitor, it is characterized in that, be provided with several described strata displacement monitors in the system, a main frame and several telepilots, described main frame comprises single chip control module that is connected with 485 communication modules and the voltage-frequency modular converter that is connected with described single chip control module, display module, sound and light alarm module and keyboard, described display module connects display, described sound and light alarm module connects audible-visual annunciator, described telepilot comprises remote control single-chip microcomputer and the wireless communication module that is attached thereto, display, keyboard, described main frame is connected with described strata displacement monitor by 485 buses, and described telepilot and described strata displacement monitor are by wireless connections.

The utility model strata displacement monitor, housing is fixed on the appearance rock stratum, line of pull is fixed on an inner rock stratum or two, when being subjected to displacement between the rock stratum, the straight-line displacement of the relative housing of line of pull becomes the rotation of grating by the displacement conversion wheel, and then the metering of the interference fringe that produces by relatively moving between two gratings, can measure the displacement between the rock stratum accurately in real time, the displacement calculating rate of change, both can use the Digiplex reading of data at the scene, also can long-distance transmission data.The utility model strata displacement monitor both can use separately, also can form monitoring system rock mass engineering project is carried out whole scene and remote real-time automatic monitoring.The utility model strata displacement monitor is simple in structure, practical and convenient, accuracy of detection is high, antijamming capability is strong, can be used in colliery, other mine, the underground works rock mass, back, support cylinder etc., at present, the remote real-time automatic monitoring in down-hole and ground that has been used for coal mine roadway top board and coal rock layer.

Description of drawings

Fig. 1 is first kind of scheme synoptic diagram of the utility model strata displacement monitor;

Fig. 2 is the utility model strata displacement monitor first scheme displacement transducer front elevation;

Fig. 3 is the utility model strata displacement monitor first scheme displacement transducer side view;

Fig. 4 is second kind of scheme synoptic diagram of the utility model strata displacement monitor;

Fig. 5 is second kind of scheme displacement transducer of the utility model strata displacement monitor synoptic diagram;

Fig. 6 is the utility model strata displacement monitor lenticular lenses structural representation;

Fig. 7 is the communication host structural representation of the utility model strata displacement monitor;

Fig. 8 is the communication host schematic appearance of the utility model strata displacement monitor;

Fig. 9 is the circuit block diagram of the utility model strata displacement monitor system.

Embodiment

For further setting forth the utility model, do more detailed explanation below in conjunction with embodiment.

First kind of scheme of the utility model strata displacement monitor seen Fig. 1, comprise housing 2, strata displacement sensor unit, information acquisition processing unit, housing 2 is by metal or have the square box that the nonmetallic materials of certain intensity are made, housing 2 is of a size of 180 * 110 * 80mm, and wall thickness is 3～5mm.Housing 2 sides are equipped with RS485 interface 13, installation position displacement sensor unit and information acquisition processing unit in the bottom surface of housing 2.

The displacement transducer unit sees Fig. 2, Fig. 3 for details, a supporting station 12 of being made, be of a size of 24 * 24 * 5mm by duroplasts vertically is installed on supporting circuit board 3, the rotating shaft 8 that one metal material is made is installed on it, one side of rotating shaft 8 is installed the displacement wheel of being made by duroplasts 9, and opposite side is installed the transparent cylinder 4 of driving wheel 22, engaged wheel 23 and the organic glass making of being made by duroplasts successively.Displacement wheel 9 and driving wheel 22 are fixed in the rotating shaft 8, and engaged wheel 23 is enclosed within the rotating shaft 8, and transparent cylinder 4 is fixed on the engaged wheel 23, and return button spring 27 is installed on the engaged wheel 23, and its other end is connected in the rotating shaft 8.On driving wheel 22, be provided with interlock sheet 26, concrete grammar is: divide bisection with the circumference of driving wheel 22, establish a finedraw at the circumference equally divided position, establish an interlock sheet 26 near each finedraw the circular arc, these interlock sheet 26 1 ends are fixed on the circumference, the other end is converted into bending at corresponding finedraw place, and bending can be pressed into from the finedraw on the circumference or eject; Be provided with on engaged wheel 23 and drive driving lever 25, its external part is stuck on the bending half-breadth part of interlock sheet 26; One end of one return depression bar 24 is fixed on the supporting circuit board 3, the other end is pressed on all the other half-breadth parts of interlock sheet 26 bendings on the driving wheel 22, interlock sheet 26 dogleg section can be pressed in the finedraw on the circumference, the interlock sheet 26 that drives driving lever 25 and driving wheel 22 is broken away from, this moment, engaged wheel 23 was got back to original position under the effect of retracing spring 27, driving driving lever 25 will be stuck on the bending half-breadth part of next interlock sheet 26, as seen when driving wheel 22 rotated continuously, 23 of engaged wheels can be made reciprocal 180 degree and rotate.

If be subjected to displacement, driving wheel 22 drives engaged wheel 23 and transparent cylinder 4 rotates together, grating semi-ring 7 is enclosed within on the transparent cylinder 4, its position is on the half cycle of starting point corresponding to the driving driving lever on the engaged wheel 23 25, be exactly the starting point driving driving lever 25 on the corresponding engaged wheel 23 respectively of grating ring 7, the direction of rotating by engaged wheel 22 mounts half grating ring 7; Lenticular lenses 21 (see figure 6) on the grating semi-ring 7, lenticular lenses 21 is fixed on the support circuit plate 3 by column 29, grating semi-ring 7 and lenticular lenses 21 are inserted in photoelectrical coupler 6 grooves the inside, grating semi-ring 7 closely contacts with lenticular lenses 21 and forms interference fringe, photoelectrical coupler 6 is fixed on the supporting circuit board 3 by little circuit board 5, photoelectrical coupler 6 becomes electric signal with the optical stripe information translation of interfering, and is sent to the information acquisition processing unit by cable.Because making 180 degree, 23 of engaged wheels back and forth rotate, so in the present embodiment, 7 of grating semi-rings need semi-ring to get final product, both saved grating material, for producing also is very favourable, because half grating ring need not to consider the five equilibrium of circumference and the accurate butt joint of seam, can be made into any accurate dimension easilier, easier with the cooperation of transparent cylinder 4, adopt the method for making of lenticular lenses 21 on the grating semi-ring 7 simultaneously, can Direct observation and adjust the grating interference strip width, obtain stable optical stripe opto-electronic conversion electric signal, the accuracy that has improved instrument.

Supporting circuit board 3 is fixed on the housing 2, and the supporting station 12 of displacement sensing unit and housing 2 are become one.

Be provided with strainer below housing 2, comprise the fixed mount 28 that is fixed on the housing 2, the stretching pulley 11 on the fixed mount 28 is connected with tensioning spring 10 on the stretching pulley 11, and its other end is connected on the axle of traverses fixed frame 28.

The very little metal line of pull 1 of retractility with certain tension force, introduce from the top of housing 2, at least pass around the bottom of a circle back from housing 2 on the wire casing of described displacement wheel 9, be wrapped on the stretching pulley 11, tensioning spring 10 makes line of pull 1 be in the state of tightening up.

Direction is provided with two strata displacement sensor units relatively, stragglyly up and down on supporting circuit board 3, see Fig. 1, wherein sew A, B and distinguish displacement transducer unit under each parts with tail, two strainers of corresponding outfit, its separately line of pull 1A, the 1B on stretching pulley 11A, the 11B introduce from introducing separately, at least one circle back is from passing separately in separately displacement wheel 9A, 9B Shangrao; Can be separately fixed in each different rock stratum, can monitor the strata displacement between each rock stratum like this.

The information acquisition processing unit also is installed in the housing 2, by another piece be fixed in the housing 2 circuit board 18 and on single chip control module 16, audible and visible alarm module 15, wireless communication module 20 and RS485 communication module 14 are formed, two input ports of single chip control module 16 connect two described photoelectrical coupler 6A, the output terminal of 6B, the output of single chip control module 16 connects audible and visible alarm module 15 respectively, wireless communication module 20 and RS485 communication module 14, RS485 communication module 14 connects RS485 interface 13, wireless communication module 20 connects communication antenna 19, and above-mentioned all modules are by a power transfer module 17A, 17B provides various required voltage power supplies.

The grating ring 7 of strata displacement monitor and lenticular lenses 21 adopt the constant pitch anomaly line raster of 10 lines/mm, the winding slot diameter of displacement wheel 9 and grating ring 7 equal diameters on the transparent cylinder 4, so the Displacement Measurement precision is 0.1mm, if adopt more highdensity grating, then can improve measuring accuracy, for example, adopt 100 lines/mm, measuring accuracy is 0.01mm, adopts 1000 lines/mm, and measuring accuracy is 0.001mm or the like.Change the ratio of displacement wheel 9 winding slot diameters and transparent cylinder 4 diameters, also can improve measuring accuracy, for example, adopt 10 lines/mm, displacement wheel 9 winding slot diameters are 1: 2 with the ratio of transparent cylinder 4 diameters, and then the Displacement Measurement precision is 0.05mm.Adopt above-mentioned two kinds of methods can reach the measuring accuracy of any requirement.

The another kind of form (see figure 4) of strata displacement sensor unit is in housing 2 sides RS485 interface 13 to be installed, displacement sensor unit, installation position and optoelectronic information collecting unit in the housing 2, the displacement transducer unit is vertically installed one and is made by duroplasts on supporting circuit board 3, be of a size of the supporting station 12 of 24 * 24 * 5mm, the rotating shaft 8 that one metal material is made is installed on it, in the rotating shaft 8 of supporting station 12 both sides, the displacement wheel 9C that a duroplasts is made is installed respectively, 9D, transparent cylinder 4A, 4B is separately fixed at displacement wheel 9C, last and the displacement wheel 9C of 9D, 9D connects rotating shaft 8 rotations together, transparent cylinder 4A, 4B posts one end loopful grating ring 7A, 7B, lenticular lenses 21A, 21B is around grating ring 7A, the last (see figure 6) of 7B, lenticular lenses 21A, 21B is by column 29A, 29B is fixed on the support circuit plate 3, grating ring 7A, 7B and lenticular lenses 21A, 21B is inserted in photoelectrical coupler 6A, 6B groove the inside, grating ring 7A, 7B and little grating 21A, 21B closely contacts, photoelectrical coupler 6A, 6B is by circuit board 5A, 5B is fixed on the supporting circuit board 3, photoelectrical coupler 6A, 6B becomes electric signal with the optical stripe information translation of interfering.Two line of pull 1A, 1B that are added with pretension introduce from the top of housing 2, pass around the bottom of a circle back from housing 2 at least on the wire casing on displacement wheel 9A, the 9B, on stretching pulley 11A, the 11B on the fixed mount 28 below being fixed on housing 2. Photoelectrical coupler 6A, 6B connect power supply, its output terminal link information acquisition process unit.

The information acquisition processing unit of alternative plan is identical with first scheme.

Fig. 9 is seen in the actual use of this strata displacement monitor, form a complete system by several strata displacement monitors, communication host, RS485 bus, direct current supply line and a telepilot, communication host connects the RS485 bus, each strata displacement monitor all hangs on the bus, connect by wireless mode between telepilot and the strata displacement monitor, in a system, can use a plurality of telepilots.

Communication host wherein is made up of Single-chip Controlling unit 37, the 485 bus communication modules 36 and the voltage-frequency modular converter 31 that are installed in housing 33 (see figure 7)s.Housing 33 is by metal or have the square box that the nonmetallic materials of certain intensity are made, housing 33 is of a size of 180 * 110 * 80mm, wall thickness is 3～5mm, housing 33 sides are equipped with cable connecting terminal 32A, 32B, one circuit board 34 is installed in the housing 33, last dress single chip control module 37, the I/O mouth of single chip control module 37 connects RS485 communication module 36, delivery outlet connects voltage-frequency modular converter 31, RS485 communication module 36 stube cable connection terminal 32A, voltage-frequency modular converter 31 output terminal stube cable connection terminal 32B.One-chip computer module 37 also connects display module 39 and acousto-optic alarm module 40, above-mentioned all devices are installed on the circuit board 34 in the main casing body 33, provide the required voltage power supply by power transfer module 35, circuit board 34 is fixed on the housing 33, housing 33 front surfaces also are provided with keyboard 42, display 38 and audible-visual annunciator 41 (see figure 8)s, keyboard 42 directly connects single chip control module 37, and display 38 connects display module 39, and audible-visual annunciator 41 connects sound and light alarm module 40.In the information of transmission, also can on-the-spotly inquire about various data, under the emergency circumstance, can also report to the police automatically, remind the field staff to note.

Strata displacement monitor is set up contact through RS485 bus and communication host, communication host is set up contact by voltage-frequency modular converter and underground communication substation, the underground communication substation is transferred to ground monitoring master station again, ground monitoring master station is converted to frequency signal strata displacement information again, realizes by the remote real-time automatic monitoring butt entry roof strata displacement of ground master station.

Telepilot is formed (see figure 9) by remote control single-chip microcomputer, wireless communication module, display and operating key, is used for on-the-spot poll bit shifting parameter; When needs poll bit shifting parameter, near strata displacement monitor, open telepilot, can set up contact with nearest strata displacement monitor, take out the displacement parameter that this strata displacement monitor monitors in time, general telepilot uses for the down-hole field staff.

The utility model strata displacement monitor can be installed in the top, tunnel, on the base plate, the country rock surface, line of pull is fixed on rock to be measured (coal) layer by boring, when strata displacement takes place when, line of pull drives the displacement conversion wheel and transparent cylinder rotates synchronously, strata displacement is converted to circular arc rotates, grating ring on the transparent cylinder and lenticular lenses are interfered the grating fringe that forms, circular arc is converted to optical information, the photoelectrical coupler of strata displacement sensor unit opens the optics letter, be converted to electric signal, after being sent to the information acquisition processing unit processes by cable, convert strata displacement information to, through visualization processing, show back and country rock strata displacement Changing Pattern figure.The utility model strata displacement monitor both can have been monitored the absolute displacement amount of rock (coal) layer, but also displacement monitoring rate of change, when displacement or rate of displacement surpass safety margin, can implement underworkings is reported to the police automatically from ground monitoring master station after the formation system, realization is avoided the security incident that causes because of roof collapse, impulsion pressure to underworkings top board and the remote real-time automatic monitoring of country rock body strata displacement.The utility model strata displacement monitor is simple in structure, easy to operate, both be applicable to and little displacement high-acruracy survey also be applicable to the high-precision automatic monitoring of big displacement.This system can be widely used in the work progresss such as mining, building, water conservancy, road country rock body, tunnel roof and floor, make rock stratum displacements such as rock mass carries out auto-real-time monitoring effectively, in time eliminate production safety hidden danger, also for the tunnel and support the rock mass design foundation is provided.At present, the remote real-time automatic monitoring in down-hole and ground that has been used for coal mine roadway top board and coal petrography.

Claims (5)

1. strata displacement monitor, comprise housing (2), line of pull (1), displacement wheel (9), grating ring (7), interference fringe testing agency by lenticular lenses (21) and photoelectrical coupler (6) formation, it is characterized in that: be provided with displacement sensing unit and information acquisition processing unit in the described housing (2), described displacement transducer unit comprises displacement converted mechanism and interference fringe testing agency, described displacement converted mechanism is to go up vertical mounting support platform (12) at the support circuit plate (3) that is fixed on the housing (2), go up installation one rotating shaft (8) at described supporting station (12), described rotating shaft (8) is gone up the described displacement wheel (9) that connects by successively is installed, transparent cylinder (4), be enclosed within the grating ring (7) on the described transparent cylinder (4), lenticular lenses (21) on the described grating ring (7), described lenticular lenses (21) is fixed on the described support circuit plate (3) by column (29), described interference fringe testing agency goes up at described support circuit plate (3) to be provided with little circuit board (5) corresponding to described grating ring (7) position, described little circuit board (5) is gone up a photoelectrical coupler (6) is installed, described grating ring (7) and lenticular lenses (21) are inserted in described photoelectrical coupler (6) groove the inside, described information acquisition processing unit is by the single chip control module (16) that is installed on the circuit board (18), audible and visible alarm module (15), wireless communication module (20), RS485 communication module (14) and power transfer module (17) constitute, the output of described photoelectrical coupler (6) connects the input end of described single chip control module (16), the output terminal of described single chip control module connects described audible and visible alarm module (15) respectively, wireless communication module (20) and RS485 communication module (14), described circuit board (18) is fixed on the described housing (2), outside described housing (2), be provided with the line of pull strainer, by be installed on the housing (2) fixed mount (28) and on stretching pulley (11) and tensioning spring (10) constitute, described stretching pulley (11) is enclosed within on the axle that is fixed on the described fixed mount (28), described tensioning spring (10) one ends connect stretching pulley (11), one end connects the axle of supporting station (28), line of pull (1) is drawn from described stretching pulley (11), pass a sidewall of housing (2), upward pass from housing (2) opposite side around at least one circle back in described displacement wheel (9).

2. strata displacement monitor according to claim 1, it is characterized in that described rotating shaft (8) runs through described supporting station (12), opposite side at described supporting station (12) is equipped with same another set of described displacement sensing unit, the corresponding opposite side at described fixed mount (28) is installed another set of described strainer, and the line of pull of described another set of strainer (1B) is upward drawn behind at least one circle in the displacement wheel (9D) of described another set of displacement transducer.

3. strata displacement monitor according to claim 1, it is characterized in that in the described displacement converted mechanism, described displacement wheel (9) connects the driving wheel (22) that is in described supporting station (12) opposite side by described rotating shaft (8), in the described rotating shaft (8) in described driving wheel (22) outside, be with engaged wheel (23) and be fixed on described transparent cylinder (4) on the described engaged wheel (23), entad finedraw is established in the second-class office of circumference at described driving wheel (22), one interlock sheet (26) one ends are close on the circumference, the other end is converted into bending at corresponding finedraw place, and make bending be pressed into and to eject from finedraw entad, on described engaged wheel (23), fix one and drive driving lever (25), its other end is in the outer of driving wheel (22), on described supporting circuit board (3), fix a return depression bar (24), its other end is pressed on the outer of described driving wheel (22), described engaged wheel (23) is gone up return button spring (27) is installed, its other end connects described rotating shaft (8), described grating ring (7) is a semi-ring, is mounted on the half cycle of described driving driving lever (25) for the described transparent cylinder (4) of starting point correspondence on the described engaged wheel (23).

4. strata displacement monitor according to claim 3, it is characterized in that on described support circuit plate (3), being provided with several supporting stations (12A, 12B), several are installed by described displacement sensing unit, corresponding several described strainers that outside described housing (2), is provided with, some line of pull (1A, 1B) are drawn from stretching pulley (11A, 11B) separately, go up suitable position around a circle back from housing (2) at least and pass on the displacement wheel (9A, 9B) of correspondence.

5. strata displacement monitoring system of using one of claim 1-4 described strata displacement monitor, it is characterized in that, be provided with a described strata displacement monitor arbitrarily in the system, a main frame and several telepilots, described main frame comprises single chip control module that is connected with 485 communication modules and the voltage-frequency modular converter that is connected with described single chip control module, display module, sound and light alarm module and keyboard, described display module connects display, described sound and light alarm module connects audible-visual annunciator, described telepilot comprises remote control single-chip microcomputer and the wireless communication module that is attached thereto, display, keyboard, described main frame is connected with described strata displacement monitor by 485 buses, and described telepilot and described strata displacement monitor are by wireless connections.

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