CN110424952A - A kind of New Magnetic Field Controlled sense inclinometer and measurement method based on Hall element - Google Patents
A kind of New Magnetic Field Controlled sense inclinometer and measurement method based on Hall element Download PDFInfo
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- CN110424952A CN110424952A CN201910786854.XA CN201910786854A CN110424952A CN 110424952 A CN110424952 A CN 110424952A CN 201910786854 A CN201910786854 A CN 201910786854A CN 110424952 A CN110424952 A CN 110424952A
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- 238000000691 measurement method Methods 0.000 title claims abstract description 5
- 238000006073 displacement reaction Methods 0.000 claims abstract description 16
- 238000005259 measurement Methods 0.000 claims abstract description 14
- 238000011065 in-situ storage Methods 0.000 claims abstract description 6
- 229910000838 Al alloy Inorganic materials 0.000 claims description 56
- 229910001369 Brass Inorganic materials 0.000 claims description 19
- 239000010951 brass Substances 0.000 claims description 19
- 229910001172 neodymium magnet Inorganic materials 0.000 claims description 15
- 239000002689 soil Substances 0.000 claims description 8
- 239000000463 material Substances 0.000 claims description 7
- 230000000694 effects Effects 0.000 claims description 5
- 230000004907 flux Effects 0.000 claims description 5
- 230000007774 longterm Effects 0.000 claims description 5
- 238000005452 bending Methods 0.000 claims description 3
- 238000004364 calculation method Methods 0.000 claims description 3
- 239000004020 conductor Substances 0.000 claims description 3
- 238000005553 drilling Methods 0.000 claims description 3
- 239000003822 epoxy resin Substances 0.000 claims description 3
- 239000003292 glue Substances 0.000 claims description 3
- 229920000647 polyepoxide Polymers 0.000 claims description 3
- 230000011218 segmentation Effects 0.000 claims description 2
- 239000004411 aluminium Substances 0.000 claims 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims 2
- 229910052782 aluminium Inorganic materials 0.000 claims 2
- 238000012360 testing method Methods 0.000 abstract description 6
- 238000005516 engineering process Methods 0.000 abstract description 3
- 230000007547 defect Effects 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 5
- 238000012544 monitoring process Methods 0.000 description 5
- 239000004065 semiconductor Substances 0.000 description 4
- 230000005684 electric field Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000005611 electricity Effects 0.000 description 2
- 230000006698 induction Effects 0.000 description 2
- 239000011435 rock Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 238000010009 beating Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000969 carrier Substances 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000003574 free electron Substances 0.000 description 1
- 238000012625 in-situ measurement Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000009533 lab test Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B47/00—Survey of boreholes or wells
- E21B47/02—Determining slope or direction
- E21B47/022—Determining slope or direction of the borehole, e.g. using geomagnetism
- E21B47/0228—Determining slope or direction of the borehole, e.g. using geomagnetism using electromagnetic energy or detectors therefor
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B7/00—Measuring arrangements characterised by the use of electric or magnetic techniques
- G01B7/30—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring angles or tapers; for testing the alignment of axes
-
- 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
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
- G01D5/12—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means
- G01D5/14—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage
- G01D5/142—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage using Hall-effect devices
- G01D5/145—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage using Hall-effect devices influenced by the relative movement between the Hall device and magnetic fields
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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Mining & Mineral Resources (AREA)
- Geology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Fluid Mechanics (AREA)
- Geophysics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Electromagnetism (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Testing Or Calibration Of Command Recording Devices (AREA)
- Pit Excavations, Shoring, Fill Or Stabilisation Of Slopes (AREA)
- Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
Abstract
The invention discloses a kind of New Magnetic Field Controlled sense inclinometer and measurement method based on Hall element, for the defects of traditional resistive inclinometer measurement range is small, measurement accuracy is low, durability is poor, using Hall element as inclination angle sensing element, Hall voltage by measuring Hall element changes size, the changing rule for accurately reflecting inclinometer rotation inclination angle, by the evolution Feature for calculating also available In Situ Displacement of Slope.Later period deformation continuous observation is carried out to test point near biggish characteristic point or sliding surface is deformed by this technology, side slope sliding deformation carries out early warning.Compared with prior art, New Magnetic Field Controlled sense inclinometer provided by the invention is of great significance for improving measurement accuracy, range, accurately reflecting In Situ Displacement of Slope variation characteristic, preferably can provide safety guarantee for slope project.
Description
Technical field
The invention belongs to construction project technical field, be related to the inclinometer applied to engineering monitoring, in particular to it is a kind of
New Magnetic Field Controlled sense inclinometer and measurement method based on Hall element.
Background technique
Landslide is a kind of common geological disaster for endangering people's life and property safety, will appear underground deep before generation
Offset phenomena, therefore, being monitored to the deformation of ground underground deep is the geotechnical engineerings matter such as defence disaster, guarantee building and water conservancy
The necessary means of amount.Wherein, clinograph is side slope deeply mixing cement-soil pile traditional monitoring tool.The instrument is that one kind is used to survey
Dip angle of hole and azimuthal in-situ measurement equipment are determined, by the way that surveyed inclination angle is converted and can be calculated inside Rock And Soil
Change in displacement value at different depth position, to evaluate the stability and bearing capacity characteristics of side slope, inclinometer technology exists at present
There has been relatively broad application in slope monitoring field.
For inclinometer while being used widely, there is also biggish deficiencies, as inclination angle measurement range is small, it is difficult to monitor
The middle and later periods of slip mass deforms, and is unable to satisfy the requirement of long term monitoring；Another aspect on-the-spot test is limited to the shadow of test environment
It rings, durability and stability hardly result in guarantee, while the measuring accuracy of traditional resistance sensor is vulnerable to water, temperature, salt
The interference of grading factors, these problems become the major influence factors of long-term slope on-line monitoring accuracy.For these problems,
It is proposed that a kind of measuring accuracy is high, range is big, strong antijamming capability New Magnetic Field Controlled sense inclinometer is with regard to particularly important.
The present invention provides a kind of New Magnetic Field Controlled sense inclinometer based on Hall element, using Hall element as inclination angle sensing element
Part constructs novel inclinometer, is continuously seen to test point progress later period deformation near biggish characteristic point or sliding surface is deformed
It surveys, side slope sliding deformation carries out early warning, to preferably provide safety guarantee for slope project.This is for improving measurement essence
Degree, range accurately reflect In Situ Displacement of Slope variation characteristic and are of great significance.
Summary of the invention
It is an object of that present invention to provide a kind of New Magnetic Field Controlled sense inclinometer based on Hall element, to overcome existing means not
Foot.Using precision height, service life length, vibration resistance, good corrosion resistance Hall element as the inclination angle measurement means inside inclinometer,
It proposes to obtain the preferred method of the change in displacement situation of slip mass simultaneously.
Technical solution of the present invention:
A kind of New Magnetic Field Controlled sense inclinometer based on Hall element, including carrier bolt 1, permanent magnet casing 2, Hall element 3,
Pulley 4, aluminium alloy upper plate 5, aluminium alloy lower plate 6, cylinder brass bolt 7, Nd-Fe-B permanent magnet 8, flexible pipe 9, connection rigid section 10,
Computer 11 and conducting wire 12；
Aluminium alloy upper plate 5 is connected by cylinder brass bolt 7 with carrier bolt 1 with aluminium alloy lower plate 6, forms a structure
Unit；Cylinder brass bolt 7 is used to connect the end of two aluminium alloy upper plates 5 and two aluminium alloy lower plates 6, two aluminium alloy upper plates
There is interval between 5 between two aluminium alloy lower plates 6, cylinder brass bolt 7 plays connection, assembles and fixes；Two aluminium
Alloy upper plate 5 is located at the outside of two aluminium alloy lower plates 6, and carrier bolt 1 is just to have connect with 5 type of attachment of aluminium alloy upper plate,
Torque can be transmitted；Carrier bolt 1 and 6 type of attachment of aluminium alloy lower plate be it is hinged, torque can not be transmitted；Permanent magnet casing 2 passes through
Cylinder brass bolt 7 is fixed between two aluminium alloy plates 6, inside be provided with groove with 8 same volume of Nd-Fe-B permanent magnet, be used for
Nd-Fe-B permanent magnet 8 is installed, Nd-Fe-B permanent magnet 8 is that Hall element 3 creates magnetic field environment；Hall element 3 passes through epoxy resin
Glue is on 1 surface of carrier bolt, for measuring magnetic field size；One end of conducting wire 12 connects Hall element 3, the other end and calculating
Machine 11 is connected, and reads the Hall voltage size of Hall element 3 in real time by computer 11；Pulley 4 is bolted on two
Between aluminium alloy upper plate 5 and two aluminium alloy lower plates 6, there is sliding function, can be slided up and down in 9 groove of flexible pipe；It is flexible
Pipe 9 is a hollow tubing conductor, and inner sidewall is provided with groove, and size is determined according to pulley size；Connect the material stiffness of rigid section 10 not
It less than aluminium alloy plate, is connected by cylinder brass bolt 7 with upper and lower two structural units, forms array and be segmented inclinometer structure.
Flexible pipe 9 can be pvc pipe, be also possible to other flexible materials, and resistance capacity to deformation is less than inclinometer structure
The anti-deformation of material.
Working principle:
New Magnetic Field Controlled sense inclinometer provided by the invention based on Hall element is installed using Hall element as sensing element
In the carrier bolt surface of inclinometer.Hall element is a kind of magnetoelectronic devices by semi-conducting material manufacturing, its working principle is that:
Pass to electric current I in the semiconductor film on piece vertical with magnetic field, due to the effect of Lorentz force, charge in semiconductor will respectively to
Two sides deflection, generates electric field force.When electric field force is equal with Lorentz force, the accumulation of charge reaches dynamic equilibrium, in semiconductor
Two end sections between establish electric field, corresponding potential is known as Hall voltage UH.If the magnetic induction intensity in magnetic field is B, Hall
The fundamental relation of voltage:
In formula: RHFor the Hall coefficient of Hall element；N is the number of unit volume carriers or free electron；Q is electricity
Sub- electricity；I be by electric current；B is the magnetic induction intensity perpendicular to I；D is the thickness of conductor.
After New Magnetic Field Controlled sense inclinometer provided by the invention based on Hall element is installed in slope soil drilling, due to cunning
The long term creep effect of slopes and the thrust of slide surface, New Magnetic Field Controlled sense inclinometer generate bending, aluminium alloy upper plate relative to
Aluminium alloy lower plate generates inclination angle theta, and then drives Hall element to generate the rotation of equal angular size by carrier bolt, thus draws
It rises and is changed by the magnetic flux in Hall element section.By hall principle it is found that the Hall voltage and magnetic flux of Hall element
There are linear relationships for size, can carry out laboratory experiment and determine Hall voltage and inclination value variation relation.Therefore, by measuring Hall
The Hall voltage of element changes size, it will be able to which the changing rule for accurately reflecting inclinometer rotation inclination angle calculates also available
The evolution Feature of In Situ Displacement of Slope.This inclinometer can be further designed to array segmentation inclinometer knot by connecting rigid section
Structure, this structure can increase measurement point, be conducive to the measurement of Rock And Soil deep large deformation, be determined using Hall voltage value each
The relative rotation inclination angle size of measuring point, so that it may which recursion goes out the lateral displacement at any point.
Beneficial effects of the present invention: the present invention, can using high-precision, non-contact, wide range Hall element magnetic survey technology
Overcome the disadvantages of traditional resistive inclinometer precision is low, range is small, avoids complicated external environment from generating test result bad
It influences, increases the reliability of In Situ Displacement of Slope measurement result；Main structure is made using aluminium alloy and brass bolt, is effectively prevented
Ferrimagnet complementary field caused by test environment influences, and further improves the reliability of the present apparatus；The present invention passes through
The Hall voltage of measurement Hall element calculates the inclination value and shift value of each measuring point, calculates simply, it is convenient to operate.
Detailed description of the invention
Fig. 1 is the internal structure top view of inclinometer provided by the invention.
Fig. 2 (a) is the internal structure main view of inclinometer provided by the invention.
Fig. 2 (b) is the internal structure main view that aluminium alloy upper plate rotates the corresponding inclinometer provided by the invention of θ.
Fig. 3 is permanent magnet casing schematic diagram provided by the invention.
Fig. 4 is Hall voltage provided by the invention and inclination angle relation curve schematic diagram.
Fig. 5 is in-site installation schematic diagram of the invention.
Fig. 6 (a) is that individual unit displacement of the invention calculates method schematic diagram.
Fig. 6 (b) is multiple element displacement calculation method schematic diagrames of the invention.
In figure: 1 carrier bolt；2 permanent magnet casings；3 Hall elements；4 pulleys；5 aluminium alloy upper plates；6 aluminium alloys
Lower plate；7 cylinder brass bolts；8 Nd-Fe-B permanent magnets；9 flexible pipes；10 connection rigid sections；11 computers；12 conducting wires.
Specific embodiment
Technical solution for a better understanding of the invention, in the following with reference to the drawings and specific embodiments does specifically the present invention
It is bright.
Embodiment one:
As shown in Figure 1, Figure 2, a kind of New Magnetic Field Controlled sense inclinometer based on Hall element, including cylinder brass bolt 7, permanent magnet are processed
Casing 2, Nd-Fe-B permanent magnet 8, Hall element 3, pulley 4, aluminium alloy upper plate 5, aluminium alloy lower plate 6, carrier bolt 1, conducting wire 12,
Computer 11, flexible pipe 9, connection rigid section 10.
Aluminium alloy upper plate 5 is connected by cylinder brass bolt 7 with carrier bolt 1 with aluminium alloy lower plate 6, forms a structure
Unit.Cylinder brass bolt 7 connects two aluminium alloy lower plates 6 of two aluminium alloy upper plates 5 and connection, plays connection, assembles and fixes work
With.Carrier bolt 1 is just to have connect with 5 type of attachment of aluminium alloy upper plate, can transmit torque, cross sectional shape is square, while in aluminium
Alloy upper plate 5 beats square hole.Carrier bolt 1 and 6 type of attachment of aluminium alloy lower plate be it is hinged, torque, section shape can not be transmitted
Shape is circle, while beating round hole in aluminium alloy lower plate 6, and carrier bolt 1 is facilitated to be put into.As 2 two sides of Fig. 3 permanent magnet casing are polished
Screw thread is dug, is fixed between two aluminium alloy plates 7 by cylinder brass bolt 7, inside, which is dug, cylindrical space, can install
Nd-Fe-B permanent magnet 8.Nd-Fe-B permanent magnet 8 uses cylindrical shape, is directly plugged into permanent magnet casing 2, creates for Hall element 3
Magnetic field environment.Hall element 3 is pasted onto the centre position on 1 surface of carrier bolt by epoxide-resin glue, with Nd-Fe-B permanent magnetic
The central axis upright of body 8, effect are the magnetic field sizes for measuring Nd-Fe-B permanent magnet 8 and being distributed.12 lower end of conducting wire connects Hall
Element 3, upper end, which is prolonged, to be connected on the outside of Shen to structure with computer 11, and by computer 11, acquisition reads Hall element 3 suddenly in real time
That voltage swing.Pulley 4 is bolted between two aluminium alloy upper plates 5 and two aluminium alloy lower plates 6, on aluminium alloy
Plate 5 is parallel with aluminium alloy lower plate 6.Flexible pipe 9 uses pvc pipe, and inner sidewall is provided with groove, and size is more bigger than pulley size, allows
Pulley slides up and down in certain track.
Such as Fig. 5, after New Magnetic Field Controlled sense inclinometer provided in present embodiment is installed in slope soil drilling, due to cunning
The long term creep effect of slopes and the thrust of slide surface, New Magnetic Field Controlled sense inclinometer generate bending, aluminium alloy upper plate 5 relative to
Aluminium alloy lower plate 6 generates inclination angle theta, and then the rotation of the generation equal angular size of Hall element 3 is driven by carrier bolt 1, by
This causes to change by the magnetic flux in 3 section of Hall element.Nd-Fe-B permanent magnet and Hall element are individually taken out into progress
Indoor standardization experiment, such as setting both distance be respectively 0.5cm, 1cm, 1.5cm, 2cm, 2.5cm, 3cm, to Hall element into
The rotation that 0~90 ° and 0~-90 ° of row obtains Hall voltage and inclination value variation relation and carries out nonlinear fitting, such as Fig. 4 institute
Show.Therefore, change size by measuring the Hall voltage of Hall element, it will be able to which Hall member is accurately instead released by matched curve
The rotation angle of part, and then reflect the changing rule at inclinometer rotation inclination angle.In order to increase measuring point quantity, preferably reflection is come down
Evolution increases connection rigid section 10 and inclinometer element number, forms array and is segmented inclinometer structure.Wherein connection is rigid
Property section 10 use steel plate, connected by cylinder brass bolt 7 with upper and lower two structural units.
Such as Fig. 6, using the fixed point of inclinometer bottom as reference point, with New Magnetic Field Controlled sense inclinometer measuring unit and vertical line
Angle measures horizontal displacement in conjunction with geometrical relationship.Assuming that a series of elementary sections of inclinometer are deformed in the same direction, each
Segment length between measuring point is L, and aluminum alloy materials have sufficiently large rigidity with rigid section is connect, ignore the deformation of material itself.
The relative rotation inclination angle size of each measuring point is determined using Hall voltage value, so that it may which recursion goes out the lateral displacement at any point.
The horizontal offset of first measuring section is calculated as
d1=L × sin θ1
Equally, the horizontal offset of second segment is calculated as
d2=d1+L×sin(θ1+θ2)
Level by accumulating horizontal offset in measurement point range below, in the available soil body at any depth measurement
Displacement.Calculation formula is as follows:
In formula: diFor the horizontal offset of i-th of unit from bottom to top；L is inclinometer element length；θiFor i-th of unit
Rotational angle relative to (i-1)-th unit.
Claims (3)
1. a kind of New Magnetic Field Controlled sense inclinometer based on Hall element, which is characterized in that the New Magnetic Field Controlled based on Hall element
Sense inclinometer includes carrier bolt (1), permanent magnet casing (2), Hall element (3), pulley (4), aluminium alloy upper plate (5), aluminium conjunction
Golden lower plate (6), cylinder brass bolt (7), Nd-Fe-B permanent magnet (8), flexible pipe (9), connection rigid section (10), computer (11) and
Conducting wire (12)；
Aluminium alloy upper plate (5) is connected by cylinder brass bolt (7) with carrier bolt (1) with aluminium alloy lower plate (6), forms one
Structural unit；Cylinder brass bolt (7) is used to connect the ends of two aluminium alloy upper plates (5) and two aluminium alloy lower plates (6), and two
Between aluminium alloy upper plate (5) between two aluminium alloy lower plates (6) exist interval, cylinder brass bolt (7) rise connection, assembling and
Fixed function；Two aluminium alloy upper plates (5) are located at the outside of two aluminium alloy lower plates (6), carrier bolt (1) and aluminium alloy
Upper plate (5) type of attachment is just to connect, and can transmit torque；Carrier bolt (1) and aluminium alloy lower plate (6) type of attachment be it is hinged, no
Torque can be transmitted；Permanent magnet casing (2) is fixed between two aluminium alloy plates 6 by cylinder brass bolt (7), inside be provided with
The groove of Nd-Fe-B permanent magnet (8) same volume, for installing Nd-Fe-B permanent magnet (8), Nd-Fe-B permanent magnet (8) is Hall element
(3) magnetic field environment is created；Hall element (3) is pasted onto carrier bolt (1) surface by epoxide-resin glue, big for measuring magnetic field
It is small；One end of conducting wire (12) connects Hall element (3), and the other end is connected with computer (11), is read in real time by computer (11)
Take the Hall voltage size of Hall element (3)；Pulley (4) is bolted on two aluminium alloy upper plates (5) and two aluminium close
Between golden lower plate (6), there is sliding function, can be slided up and down in flexible pipe (9) groove；Flexible pipe (9) is a hollow tubing conductor,
Inner sidewall is provided with groove, and size is determined according to pulley size；The material stiffness for connecting rigid section (10) is not less than aluminium alloy plate, leads to
It crosses cylinder brass bolt (7) to connect with upper and lower two structural units, forms array and be segmented inclinometer structure.
2. the New Magnetic Field Controlled sense inclinometer according to claim 1 based on Hall element, which is characterized in that the flexible pipe
It (9) is pvc pipe or other flexible materials, resistance capacity to deformation is less than the deformation resistance of New Magnetic Field Controlled sense inclinometer structural material
Energy.
3. the measurement method of the New Magnetic Field Controlled sense inclinometer of any of claims 1 or 2 based on Hall element, which is characterized in that will
After New Magnetic Field Controlled sense inclinometer is installed in slope soil drilling, since the long term creep effect of slip mass and the thrust of slide surface are made
With New Magnetic Field Controlled sense inclinometer generates bending, and aluminium alloy upper plate (5) generates inclination angle theta relative to aluminium alloy lower plate (6), and then passes through
Carrier bolt (1) drives Hall element (3) to generate the rotation of equal angular size, thus causes through Hall element (3) section
Magnetic flux change；By hall principle it is found that the Hall voltage of Hall element (3) and magnetic flux size have linear close
System, determines Hall voltage and inclination value variation relation；Therefore, change size, energy by measuring the Hall voltage of Hall element (3)
The changing rule for accurately reflecting inclinometer rotation inclination angle, is obtained by calculation the evolution Feature of In Situ Displacement of Slope；The utility model magnetic strength
Inclinometer is further designed to array segmentation inclinometer structure by connecting rigid section (10), is determined using Hall voltage value each
The relative rotation inclination angle size of a measuring point, the lateral displacement at any point is gone out with regard to recursion；
The horizontal offset of first measuring section calculates are as follows:
d1=L × sin θ1
Equally, the horizontal offset of second segment calculates are as follows:
d2=d1+L×sin(θ1+θ2)
By accumulating horizontal offset in measurement point range below, the horizontal displacement in the soil body at any depth measurement is obtained, is counted
It is as follows to calculate formula:
In formula: diFor the horizontal offset of i-th of unit from bottom to top；L is inclinometer element length；θiIt is opposite for i-th of unit
In the rotational angle of (i-1)-th unit.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111118763A (en) * | 2020-01-06 | 2020-05-08 | 浙江众邦机电科技有限公司 | Sewing machine and machine head turnover protection device thereof |
| CN115046525A (en) * | 2022-08-15 | 2022-09-13 | 上海米度测控科技有限公司 | Movable inclinometer and method for measuring deep horizontal displacement |
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| CN115046525B (en) * | 2022-08-15 | 2022-11-04 | 上海米度测控科技有限公司 | Movable inclinometer and method for measuring deep horizontal displacement |
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