CN108180889A - A kind of settlement measurement system and method based on MEMS - Google Patents
A kind of settlement measurement system and method based on MEMS Download PDFInfo
- Publication number
- CN108180889A CN108180889A CN201711295052.6A CN201711295052A CN108180889A CN 108180889 A CN108180889 A CN 108180889A CN 201711295052 A CN201711295052 A CN 201711295052A CN 108180889 A CN108180889 A CN 108180889A
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- Prior art keywords
- mounting base
- measured point
- mems
- point mounting
- connecting rod
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C5/00—Measuring height; Measuring distances transverse to line of sight; Levelling between separated points; Surveyors' levels
Abstract
The present invention discloses a kind of settlement measurement system based on MEMS, including：With reference to measuring point mounting base, measured point mounting base, MEMS sensor；It is described to be fixed on preset with reference to measuring point mounting base；The measured point mounting base is more than one, described to array from left to right with reference to measuring point mounting base with the measured point mounting base；It is described to be rigidly connected with reference between measuring point mounting base and adjacent measured point mounting base, between adjacent two measured point mounting bases using the identical connecting rod of length；Each connecting rod is equipped with the MEMS sensor, and each connecting rod is in horizontality；It is rigidly connected between the measured point mounting base and measured point.Technical solution provided by the invention can conveniently and efficiently carry out system building, while reduce the workload of system installation and debugging, so as to reduce measurement cost.
Description
Technical field
The present invention relates to settlement measurement technical field more particularly to a kind of settlement measurement system and methods based on MEMS.
Background technology
In fields such as communication base station iron tower, foundation pit construction, building safety monitorings, the soil body, building dam body vertical sedimentation
Variation is an important monitoring parameters.Existing settlement measurement can generally pass through GPS, total powerstation, differential settlement measurement system
The technologies such as system are realized.
It is using the method that the sedimentation of GPS or total station survey vertical direction changes：Pass through being calculated for trigonometric function
Vertical change in displacement further according to the distribution of actual object of measurement, lays the sensor of respective numbers, so as to obtain vertical direction
The overall trend of offset.Existing GPS or total powerstation are when measuring the tested soil body, because of cost and sensor own dimensions
Limitation, limited amount of layouting, routinely lay when, often only measure 4~5 measuring points, then, pass through the trend of 4~5 points
Figure judges misalignment, and there are certain uncertainties.And GPS or total powerstation manufacture are accurate, cost is higher, impact resistance compared with
Difference all needs to be protected when transporting, installing, once there is impact injury, sensor will be unable to repair, and use cost is caused to increase
High, reliability reduces.And operation needs artificial carry out, it is difficult to accomplish round-the-clock real-time measurement.
And differential settlement measurement system then utilizes the principle of communicating pipe, the pressure differential between witness mark and measurement point
(i.e. liquid level is poor) changes to react the sedimentation of measured point and reference point.Generally utilize micro-pressure pressure sensor or LVDT
Liquid level sensor in (Linear Variable Differential Transformer, linear variable difference transformer) into
The measurement of row liquid level.But micro-pressure pressure sensor is because its range is small (only general height be 500 millimeter of water pressure sizes),
So that the daily change of atmospheric pressure can generate system measurement error, meanwhile, environment temperature can be to the expansion of pressure sensor inside
Scattered silicon has an impact.Therefore, it is easily affected by environment using the differential settlement measurement system of micro-pressure pressure sensor, so as to lead
Cause system stability not high.And the differential settlement measurement system of displacement sensor liquid level is utilized, because liquid level gauge directly connects
Internal liquid is touched, leakproofness can not ensure, easily lead to internal liquid evaporation；Also often because of the measurement accuracy of displacement sensor, environment
The problems such as vibration, which exists, measures limitation.
In conclusion existing pressure difference settlement measurement method is in cost control, resistance to mechanical impact, system stability, precision
Etc. have some limitations, and need to lay pipeline, the systems such as water route, installation and debugging workload is larger, of high cost, difficult
To meet the requirement of current working.
Invention content
The present invention is intended to provide a kind of settlement measurement system and method based on MEMS, can conveniently and efficiently carry out system
It builds, while reduces the workload of system installation and debugging, so as to reduce measurement cost.
In order to achieve the above objectives, the technical solution adopted by the present invention is as follows：
A kind of settlement measurement system based on MEMS, including：With reference to measuring point mounting base, measured point mounting base, MEMS sensings
Device；It is described to be fixed on preset with reference to measuring point mounting base；The measured point mounting base is more than one, described to be installed with reference to measuring point
Seat arrays from left to right with the measured point mounting base；It is described with reference to measuring point mounting base and adjacent measured point mounting base it
Between, between adjacent two measured point mounting bases using length it is identical connecting rod rigid connection；Each connecting rod is equipped with
The MEMS sensor, and each connecting rod is in horizontality；It is rigidly connected between the measured point mounting base and measured point.
Preferably, each connecting rod is respectively positioned on same horizontal line.
Preferably, the MEMS sensor is installed on the point midway of each connecting rod.
Preferably, the measured point mounting base is fixed on using setscrew on measured point.
Preferably, the connecting rod is metal material.
Preferably, the length of the connecting rod is 1~5m.
A kind of settlement measurement method based on MEMS, including：Obtain the initial angle angle value of the MEMS sensor；It obtains again
The angle value of the MEMS sensor is taken, is second angle value；It is calculated according to the second angle value and the initial angle angle value
The sedimentation value of the measured point.
Preferably, the sedimentation value that the measured point is calculated according to the second angle value and the initial angle angle value
Method is：
S=L (sin α2-sinα1)
Wherein, sedimentation values of the S for the measured point, length of the L for the connecting rod, α1For the initial angle angle value, α2For
The second angle value.
Settlement measurement system and method provided in an embodiment of the present invention based on MEMS, there is provided with reference to measuring point mounting base and
More than one measured point mounting base, and reference point mounting base and measured point mounting base array from left to right, reference point installation
Seat and the connecting rod for using length identical between adjacent measured point mounting base, between two adjacent measured point mounting bases are firm
Property connection, while each connecting rod is equipped with MEMS sensor, when carrying out settlement measurement, only need to record the initial of MEMS sensor
Angle value, then in predetermined period, again obtain MEMS sensor angle value, by angle value twice can calculate by
The sedimentation value of measuring point.Only with mounting base, connecting rod and MEMS sensor in system, install it is very convenient, compared to
Existing settlement measurement system due to having abandoned the components such as connecting tube, differential liquid stock solution tank, pipeline, gas circuit, is pacified
Dress, the workload debugged substantially reduce, so as to the measurement cost for simplifying system, reducing whole system.
Description of the drawings
Fig. 1 is the structure diagram of the embodiment of the present invention；
Fig. 2 is the structure diagram of MEMS sensor angle change when measured point settles；
In figure, 1 is with reference to measuring point mounting base, and 21,22,23 be measured point mounting base, and 3 be MEMS sensor, and 4 be connection
Bar.
Specific embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, below in conjunction with attached drawing, to the present invention into
Row is further described.
Fig. 1 is the structure diagram of the embodiment of the present invention, including：With reference to measuring point mounting base 1, measured point mounting base 2, MEMS
Sensor 3；Described to be fixed on preset with reference to measuring point mounting base 1, which should select position relatively to stablize, settle change
The small place of shape；The measured point mounting base is more than one, it is described with reference to measuring point mounting base and the measured point mounting base from
Left-to-right is arranged in order；It is described with reference to measuring point mounting base between adjacent measured point mounting base, the peace of adjacent two measured points
Fill the connecting rod rigid connection for using length identical between seat；Each connecting rod is equipped with the MEMS sensor, and each
Connecting rod is in horizontality；It is rigidly connected between the measured point mounting base and measured point.
In the present embodiment, each connecting rod is respectively positioned on same horizontal line, and the MEMS sensor is installed on often
The point midway of a connecting rod.Due to when system is installed, the inevitably Light deformation of the soil body or sensor,
Therefore MEMS sensor, can be there are one initial angle angle value, it should record the initial angle angle value in time after system installs.
In the present embodiment, the measured point mounting base is fixed on using setscrew on measured point, and the connecting rod is gold
Belong to material, the length of connecting rod is generally 1~5m, and in same measuring system, the length of connecting rod is fixed value.
Using the method for above-mentioned settlement measurement systematic survey some works sedimentation based on MEMS, including：Described in acquisition
The initial angle angle value of MEMS sensor；In predetermined period, the angle value of the MEMS sensor is obtained again, is second angle
Value；The sedimentation value of the measured point is calculated according to the second angle value and the initial angle angle value.In the present embodiment, with reference
MEMS sensor between measuring point mounting base 1 and measured point mounting base 21 measures the sedimentation value of measured point mounting base 21；With tested
MEMS sensor between point mounting base 21 and measured point mounting base 22 measures the sedimentation value of measured point mounting base 22；Use measured point
MEMS sensor between mounting base 22 and measured point mounting base 23 measures the sedimentation value of measured point mounting base 23.
Specifically, the method that the sedimentation value of the measured point is calculated according to the second angle value and the initial angle angle value
For：
S=L (sin α2-sinα1)
Wherein, sedimentation values of the S for the measured point, length of the L for the connecting rod, α1For the initial angle angle value, α2For
The second angle value.
This method operation principle is to be rigidly connected with reference to measuring point with measured point using the connecting rod of regular length, even
The centre position of extension bar is equipped with MEMS sensor.The initial angle of MEMS sensor is zero or fixed value during initial position,
When sedimentation or protuberance occur for measured point, change in location occurs therewith for the connecting rod at measured point end, corresponds to the first of MEMS sensor
Beginning angle changes, and since the length of connecting rod is fixed, can be calculated as sinking by length, the angle change value of connecting rod
The change in displacement of drop or protuberance.
As shown in Fig. 2, measured point mounting base 21 is sunk, it is assumed that the initial angle angle value of MEMS sensor is 0, under generation
Reading after heavy is α, and according to trigonometric function relationship, the sinking displacement of measured point is Lsin α；Measured point mounting base 22 is grand upwards
It rises, it is assumed that the initial angle angle value of MEMS sensor is 0, and the reading after swelling is β, according to trigonometric function relationship, measured point
Upwaarping deformation be Lsin β.
Measured point described in the present embodiment is the measured point on some works, which can be with communication base station iron
Tower, bridge tunnel etc..
Settlement measurement system and method provided in an embodiment of the present invention based on MEMS, there is provided with reference to measuring point mounting base and
More than one measured point mounting base, and reference point mounting base and measured point mounting base array from left to right, reference point installation
Seat and the connecting rod for using length identical between adjacent measured point mounting base, between two adjacent measured point mounting bases are firm
Property connection, while each connecting rod is equipped with MEMS sensor, when carrying out settlement measurement, only need to record the initial of MEMS sensor
Angle value, then in predetermined period, again obtain MEMS sensor angle value, by angle value twice can calculate by
The sedimentation value of measuring point.Only with mounting base, connecting rod and MEMS sensor in system, install it is very convenient, with tradition
GPS, communicating pipe, differential measuring system are different, due to having abandoned connecting tube, differential liquid stock solution tank, pipeline, gas circuit etc.
Component, therefore installation, the workload of debugging substantially reduce, so as to the measurement cost for simplifying system, reducing whole system.
The present invention is mainly based upon the Monitoring method of the subsidence of MEMS, is measured by using MEMS sensor with reference to measuring point and quilt
When measuring point is subjected to displacement variation, MEMS sensor angle change caused by caused connecting rod change in location and change in displacement
Correspondence obtains the monitoring method of measured point sedimentation or protuberance.The present invention is related to for the variation of measurement structure object sedimentation
The safety monitorings industry field such as communication base station iron tower, bridge tunnel, civil construction.
The above description is merely a specific embodiment, but protection scope of the present invention is not limited thereto, any
Those familiar with the art in the technical scope disclosed by the present invention, can readily occur in change or replacement, should all contain
Lid is within protection scope of the present invention.
Claims (8)
1. a kind of settlement measurement system based on MEMS, which is characterized in that including：With reference to measuring point mounting base, measured point mounting base,
MEMS sensor；It is described to be fixed on preset with reference to measuring point mounting base；The measured point mounting base be more than one, the reference
Measuring point mounting base arrays from left to right with the measured point mounting base；It is described with reference to measuring point mounting base and adjacent measured point
It is rigidly connected between mounting base, between adjacent two measured point mounting bases using the identical connecting rod of length；Each connection
Bar is equipped with the MEMS sensor, and each connecting rod is in horizontality；Between the measured point mounting base and measured point
Rigid connection.
2. the settlement measurement system according to claim 1 based on MEMS, which is characterized in that each equal position of connecting rod
In on same horizontal line.
3. the settlement measurement system according to claim 2 based on MEMS, which is characterized in that the MEMS sensor installation
In the point midway of each connecting rod.
4. the settlement measurement system according to claim 3 based on MEMS, which is characterized in that the measured point mounting base is adopted
It is fixed on measured point with setscrew.
5. the settlement measurement system according to claim 3 based on MEMS, which is characterized in that the connecting rod is metal material
Matter.
6. the settlement measurement system according to claim 5 based on MEMS, which is characterized in that the length of the connecting rod is
1~5m.
7. the method for the sedimentation of the settlement measurement systematic survey based on MEMS according to claim 1 to 6 any one, special
Sign is, including：
Obtain the initial angle angle value of the MEMS sensor；
The angle value of the MEMS sensor is obtained again, is second angle value；
The sedimentation value of the measured point is calculated according to the second angle value and the initial angle angle value.
8. the method for the settlement measurement systematic survey sedimentation according to claim 7 based on MEMS, which is characterized in that described
It is according to the method for sedimentation value that the second angle value and the initial angle angle value calculate the measured point：
S=L (sin α2-sinα1)
Wherein, sedimentation values of the S for the measured point, length of the L for the connecting rod, α1For the initial angle angle value, α2It is described
Second angle value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711295052.6A CN108180889A (en) | 2017-12-08 | 2017-12-08 | A kind of settlement measurement system and method based on MEMS |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201711295052.6A CN108180889A (en) | 2017-12-08 | 2017-12-08 | A kind of settlement measurement system and method based on MEMS |
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| CN108180889A true CN108180889A (en) | 2018-06-19 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100836644B1 (en) * | 2008-01-07 | 2008-06-10 | 이경주 | Ground sinking sensing system |
| CN103993530A (en) * | 2014-06-04 | 2014-08-20 | 中南大学 | Track sedimentation measuring device and method based on angle measurement |
| CN104180755A (en) * | 2014-08-06 | 2014-12-03 | 张喜 | Method and apparatus for deformation observation of large-size building |
| CN105318859A (en) * | 2014-08-01 | 2016-02-10 | 上海凯盾工程技术有限公司 | Method for directly measuring and monitoring sedimentation deformation of underground pipeline and building structure and device of method |
| CN106989718A (en) * | 2017-03-29 | 2017-07-28 | 江西飞尚科技有限公司 | A kind of Monitoring method of the subsidence based on MEMS |
-
2017
- 2017-12-08 CN CN201711295052.6A patent/CN108180889A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100836644B1 (en) * | 2008-01-07 | 2008-06-10 | 이경주 | Ground sinking sensing system |
| CN103993530A (en) * | 2014-06-04 | 2014-08-20 | 中南大学 | Track sedimentation measuring device and method based on angle measurement |
| CN105318859A (en) * | 2014-08-01 | 2016-02-10 | 上海凯盾工程技术有限公司 | Method for directly measuring and monitoring sedimentation deformation of underground pipeline and building structure and device of method |
| CN104180755A (en) * | 2014-08-06 | 2014-12-03 | 张喜 | Method and apparatus for deformation observation of large-size building |
| CN106989718A (en) * | 2017-03-29 | 2017-07-28 | 江西飞尚科技有限公司 | A kind of Monitoring method of the subsidence based on MEMS |
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Application publication date: 20180619 |