CN107702696A - A kind of bus-type high density inclination measurement system and method - Google Patents
A kind of bus-type high density inclination measurement system and method Download PDFInfo
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- CN107702696A CN107702696A CN201710959678.6A CN201710959678A CN107702696A CN 107702696 A CN107702696 A CN 107702696A CN 201710959678 A CN201710959678 A CN 201710959678A CN 107702696 A CN107702696 A CN 107702696A
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- bus
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- series connection
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- sensing unit
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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
Abstract
The invention discloses a kind of bus-type high density inclination measurement system and method, the system includes data acquisition module and at least two sensing units, the sensing unit includes bus series connection up/down interface, control module and deviational survey sensing module, the upper interface of bus series connection is connected to bus series connection lower interface by bus, the control module is communicated by bus with data acquisition module, the control module is also connected with deviational survey sensing module, and the upper interface of bus series connection of the sensing unit is used to connect data acquisition module or cascades other sensing units.The present invention connects each sensing unit by bus carry mode, and so as to realize high density, high-precision data acquisition, system is easy for installation, and fault rate is low；And sensing unit timesharing takes bus, low-power consumption collection transmission is realized, reduces interference.The present invention can be widely applied to engineering detecting field as a kind of bus-type high density inclination measurement system and method.
Description
Technical field
The present invention relates to engineering detecting field, especially a kind of bus-type high density inclination measurement system and method.
Background technology
Deeply mixing cement-soil pile monitoring is that two level and above monitoring safe class engineering must survey project, extensively using with foundation ditch,
Tunnel, side slope, ground, track traffic, mine tailing, dam engineering safety monitoring in.For building foundation pit, according to《Build base
Cheat engineering monitoring technical specification》(GB50497-2009) table 4.2.1, I and II building foundation pit, deep water prosposition is should survey, and three
Level building foundation pit is advisable survey；According to《City track traffic engineering Specifications of Monitoring Technology》(GB50911-2013) table 4.2.1, monitoring
Safe class is I and II, and deep water prosposition for that should survey project, for choosing survey by monitoring safe class three-level.Therefore, deep water prosposition
That moves is widely used, and is one of indispensable monitoring project of engineering monitoring.
Inclinometer according to probe whether be fixed on testee be divided into it is fixed and movable two kinds.Base pit engineering monitors
In commonly use be movable type inclinometer, i.e., first bury inclinometer pipe, per at regular intervals by probe be put into pipe interior edge guide groove slide,
It is preferably 0.5m (Li=0.5m) to measure spacing, and horizontal displacement is calculated per 0.5m changes in pitch by measuring inclinometer pipe.Fixed survey
Oblique instrument is using inclino-probe as one point sensing device, every certain fixed range (general 3~8m, i.e. Li=3~8m), is embedded in
It is identical with sensor measurement changes in pitch by the deviational survey rake of tubes between assuming sensor in inclinometer pipe, so as to calculate horizontal position
Move.Deviational survey schematic diagram 1, line on the basis of left side vertical, the curve on right side is curve after deformation, and dash area is inclinometer, meter
Calculating formula is：ΔSi=(θi-θi-1) .L, wherein Δ SiFor horizontal displacement variable quantity at depth i, θ is duplicate measurements at depth i
Change of pitch angle amount, L are spaced to measure.
Existing movable type inclinometer passes through pre-buried deviational survey as one of most widely used method of current engineering monitoring
Pipe, in data acquisition, data acquisition is carried out per n/2 rice (n is integer), then calculated level displacement, is had portable, economical, several
According to collection density it is high the features such as, but following shortcomings in its practical application be present：
Firstth, measure auxiliary equipment (inclinometer pipe) and bury difficulty height：The elongated colligation of inclinometer pipe on precast reinforced cage, and
Engineering pile pour before with steel reinforcement cage synchronously decentralization to drilling in, then with support pile formed by integrally casting, abolished by pile crown, continued access and
The embedded of auxiliary equipment could be completed by building the protection multiple working procedure such as pier by laying bricks or stones, and in whole process, because of inclinometer pipe adapter loosely, it is close
Any one careless omission such as envelope is not tight, lifting deformation, direction dislocation, can cause the position supporting construction can not carry out deep horizontal
Displacement measurement.According to by pile body, to carry out drilling embedded for the soil body, then equally faces that immersed tube is difficult, the filling of inclinometer pipe periphery is not close
Real, mud sediment causes that depth is unsatisfactory for design requirement, the soil body and Supporting Structure deformation is uncoordinated and embedded high cost etc. is more
Kind problem.
Secondth, labor intensity is big, data acquisition is slow：The data acquisition of movable deviational survey is mainly passed using artificial lift's deviational survey
Sensor, hovered per 0.5m, pending data stably gathers deviational survey data, to reduce error, using positive and negative survey twice.With 25 meters of deviational surveys
Hole calculates, it is assumed that 5 seconds pending datas of hovering are stable every time, then in whole data acquisition, equipment decentralization 50m, lift 50m, manually
It need to hover 100 times, 500 seconds, whole gatherer process single hole was offer 15 minutes, if common engineering is calculated by 15 holes, individually
Deviational survey project needs 2 people not stop to gather 225 minutes (i.e. about 3.5 hours), and labor intensity is very big, and collecting efficiency is low.
3rd, data precision is poor：There is deviational survey principle (referring to this paper Section 1) to understand, Rock And Soil or supporting construction deep water
Prosposition is moved using 0.5 meter of length leaning angle change value of certain depth, and the horizontal displacement variable quantity of the depth is obtained by conversion, single
Point displacement is calculated as follows：
ΔSi=(θi-θi-1).L
ΔSiHorizontal displacement variable quantity at-depth i；
The change of pitch angle amount of duplicate measurements at θ-depth i；
L-measurement interval.
From formula, its main error source has：Depth can not be consistent completely in θ duplicate measurements, cause i depths
Horizontal displacement calculates error.
Existing stationary slope level is mainly used in the engineering for needing permanent monitoring, such as dam, Permanent Slope, mine tailing,
It possesses the features such as automatic data collection, remote transmission, the collection frequency is high, single point precision is high, but exists in its practical application
Following shortcomings：
Firstth, measure auxiliary equipment (inclinometer pipe) and bury difficulty height：It is same with movable type inclinometer, do not describing；
Secondth, equipment cost is high：The domestic and international price variance of the fixed Acquisition Instrument of single-point is very big, and substantially 1500~20000
Member/point, common engineering, which is limited to cost, to be applied；
3rd, collection density is low, and data degree of fitting is poor：In view of cost reason, the general installation interval of stationary slope level is 3
1 point of~10m；And because single sensor needs lead to the deviational survey mouth of pipe (nozzle diameter 70mm), sensor excessively to cause wire
It can not be installed too much.Therefore, data institute drawing data curve and practical distortion degree of fitting are poor measured by stationary slope level.
In the prior art such as a kind of method and apparatus (CN102889876A) of the underground deformation of measurement in real time, it sets monitoring
It is vulnerable to broadcast, low frequency, characteristic impedance using coaxial cable communication modes, the online foundation pit construction scene of which during node
Deng interference, and its accuracy of detection is limited by cable quality, power quality etc., so have influence on equipment cost, monitoring accuracy and
Data-Link integrity degree, it is unfavorable for high-density arrangement and the use of deviational survey detection net.
The content of the invention
In order to solve the above-mentioned technical problem, the purpose of the present invention is：A kind of bus-type high density, high accuracy, automatic is provided
Change inclination measurement system.
In order to solve the above-mentioned technical problem, it is another object of the present invention to：There is provided a kind of bus-type high density, high accuracy,
Automate tilt measurement.
The technical solution adopted in the present invention is：A kind of bus-type high density inclination measurement system, includes data acquisition module
With at least two sensing units, the sensing unit include the upper interface of bus series connection, bus series connection lower interface, control module and
Deviational survey sensing module, the upper interface of bus series connection are connected to bus series connection lower interface by bus, and the control module passes through
Bus is communicated with data acquisition module, and the control module is also connected with deviational survey sensing module, the bus string of the sensing unit
Interface is used for the input for connecting data acquisition module on connection or the bus series connection lower interface of other sensing units, the data are adopted
Collect the input of module to be connected with the upper interface of bus series connection of at least one sensing unit.
Further, the upper interface of the bus series connection and bus series connection lower interface use RS485 interfaces.
Further, the data acquisition module uses bus transceiver.
Further, the sensing unit also includes bus voltage control module, the power supply of the upper interface of bus series connection
End is respectively connecting to control module and deviational survey sensing module by bus voltage control module.
Further, the power supply terminal voltage of the upper interface of bus series connection is 9V, and the bus voltage control module is that 5V is steady
Volt circuit.
Further, the deviational survey sensing module includes at least one deviational survey sensor, and the control module passes with deviational survey
Sensor connects.
Further, the sensing unit includes a stereoplasm tube, and the control module and deviational survey sensing module may be contained within
Inside stereoplasm tube, above interface and bus series connection lower interface are respectively arranged at stereoplasm tube both ends for the bus series connection.
Another technical scheme of the present invention is：A kind of bus-type high density tilt measurement, includes following steps：
Multiple sensing units are set and it is numbered, is cascaded between sensing unit by RS485 buses and is connected to data
Acquisition module；
Data acquisition module is communicated using time-division multiplexing (TDM) with multiple sensing units, obtains the deviational survey of sensing unit
Data；
After the completion of the deviational survey data acquisition of all sensing units, parent service is sent automatically to by data acquisition module
Device.
Further, the data acquisition module is communicated using time-division multiplexing (TDM) with multiple sensing units, is obtained and is passed
The step for feeling the deviational survey data of unit, it is specially：Data acquisition module sends collection according to the number order of sensing unit and referred to
Order, deviational survey data to data acquisition module is uploaded after the sensing unit for meeting instruction receives instruction, it is total that upload finishes backed off after random
Line is simultaneously sent completely instruction to data acquisition module, the next acquisition instructions of data acquisition module transmission.
The beneficial effects of the invention are as follows：Present system connects each sensing unit by bus carry mode, so as to realize
Highdensity data acquisition, highly it is fitted with measured object horizontal displacement, data precision is high, and the system is easy for installation, sensing
Module damage in unit does not influence overall line work, therefore fault rate is low；And same period sensing unit can be single
Exclusive bus, low-power consumption collection transmission is realized, reduces interference.
The present invention another beneficial effect be：The inventive method connects each sensing unit by bus carry mode, so as to
Highdensity data acquisition to be realized, is highly fitted with measured object horizontal displacement, data precision is high, and using the system of this method
Easy for installation, the module damage in sensing unit does not influence overall line work, therefore fault rate is low, and is taken using timesharing
Acquisition principle, realize that low-power consumption is acquired transmission to the data in bus, reduce interference.
Brief description of the drawings
Fig. 1 is deviational survey schematic diagram；
Fig. 2 is the Organization Chart of present system；
Fig. 3 is the electrical block diagram of sensing unit in present system；
Fig. 4 is the specific embodiment circuit theory diagrams of bus voltage control module one in present system；
Fig. 5 is the organigram of sensing unit in present system；
Fig. 6 is the step flow chart of the inventive method.
Embodiment
The embodiment of the present invention is described further below in conjunction with the accompanying drawings：
Reference picture 2 and Fig. 3, a kind of bus-type high density inclination measurement system, include data acquisition module and at least two and pass
Feel unit, the sensing unit includes the upper interface of bus series connection, bus series connection lower interface, control module and deviational survey sensing mould
Block, the upper interface of bus series connection are connected to bus series connection lower interface by bus, and the control module passes through bus and data
Acquisition module is communicated, and the control module is also connected with deviational survey sensing module, and the upper interface of bus series connection of the sensing unit is used
In connection data acquisition module input or other sensing units bus connect lower interface, the data acquisition module it is defeated
Enter end to be connected with the upper interface of bus series connection of at least one sensing unit.
As shown in Fig. 2 data acquisition module input simultaneously access multiple sensing units, can also sensing unit it
Between can cascade after be connected to the input of data acquisition module, access way is flexible, can make corresponding adjust according to field condition
Whole setting.
Preferred embodiment is further used as, above interface and bus series connection lower interface use RS485 for the bus series connection
Interface, by RS485 serial bus communications, using balance transmission and differential received, the ability with suppression common mode interference and always
Line transceiver has high sensitivity, can detect as little as 200mV voltage, avoids communication quality by external environment, communication line
The interference of the factors such as quality.In addition, use RS485 interfaces to be easy to peripheral hardware flexibly to expand to adapt to the supporting construction of different depth,
It is very convenient in pit retaining monitoring field application and advantageously reduce cost, it is suitable for scale popularization.
Preferred embodiment is further used as, the data acquisition module uses bus transceiver.
It is real because sensing unit cascade circuit is long and complex circuit in the case of the above-mentioned sensing unit of large-scale application
The situation of sensing unit power supply instability is likely to occur in the application of border.Therefore, preferred embodiment, the biography are further used as
Sense unit also includes bus voltage control module, and the power end of the upper interface of bus series connection passes through bus voltage control module
It is respectively connecting to control module and deviational survey sensing module.
In order to ensure to supply constant, the increase bus voltage control module in sensing unit, using width of voltage or electric current
Voltage processing and multilevel voltage control, the high voltage of bus supply is by exporting stable electricity after bus voltage control module
Pressure is to ensure the power supply of sensing units at different levels, so as to ensure to accurately measure the precision of angle.
It is further used as preferred embodiment, the power supply terminal voltage of the upper interface of bus series connection is 9V, the bus
Voltage control module is 5V mu balanced circuits, and a kind of specific implementation circuit of wherein 5V mu balanced circuits can refer to Fig. 4 schematic diagram.
Preferred embodiment is further used as, the deviational survey sensing module includes at least one deviational survey sensor, institute
Control module is stated to be connected with deviational survey sensor.
Reference picture 5, exemplified by being provided with the sensing unit of two deviational survey sensing modules, it is further used as preferable embodiment party
Formula, the sensing unit include a stereoplasm tube 1, and the control module (not shown) and deviational survey sensing module 41,42 are equal
It is arranged inside stereoplasm tube 1, above interface 2 and bus series connection lower interface 3 are respectively arranged at stereoplasm tube both ends for the bus series connection.Institute
Sealant pouring and sealing can be used by stating in stereoplasm tube, both ends leakage connecting interface.
A kind of reference picture 6, bus-type high density tilt measurement, includes following steps：
Multiple sensing units are set and it is numbered, is cascaded between sensing unit by RS485 buses and is connected to data
Acquisition module；
Data acquisition module is communicated using time-division multiplexing (TDM) with multiple sensing units, obtains the deviational survey of sensing unit
Data；
After the completion of the deviational survey data acquisition of all sensing units, parent service is sent automatically to by data acquisition module
Device.
Preferred embodiment is further used as, the data acquisition module is using time-division multiplexing (TDM) and multiple biographies
Feel unit communication, the step for obtaining the deviational survey data of sensing unit, be specially：Data acquisition module is according to the volume of sensing unit
Number order send acquisition instructions, when the sensing unit for meeting instruction receive instruction after upload deviational survey data to data acquisition module,
Upload finishes backed off after random bus concurrency and send completion instruction to data acquisition module, and data acquisition module sends next collection and referred to
Order.
Above is the preferable implementation to the present invention is illustrated, but the invention is not limited to the implementation
Example, those skilled in the art can also make a variety of equivalents on the premise of without prejudice to spirit of the invention or replace
Change, these equivalent deformations or replacement are all contained in the application claim limited range.
Claims (9)
- A kind of 1. bus-type high density inclination measurement system, it is characterised in that：Include data acquisition module and at least two sensings are single Member, the sensing unit include the upper interface of bus series connection, bus series connection lower interface, control module and deviational survey sensing module, institute State bus series connection upper interface and bus series connection lower interface is connected to by bus, the control module passes through bus and data acquisition module Block is communicated, and the control module is also connected with deviational survey sensing module, and the upper interface of bus series connection of the sensing unit is used to connect The bus of the input of data acquisition module or other sensing units connect lower interface, the input of the data acquisition module with The upper interface connection of bus series connection of at least one sensing unit.
- A kind of 2. bus-type high density inclination measurement system according to claim 1, it is characterised in that：Connect in the bus series connection Mouth and bus series connection lower interface use RS485 interfaces.
- A kind of 3. bus-type high density inclination measurement system according to claim 2, it is characterised in that：The data acquisition module Using bus transceiver.
- A kind of 4. bus-type high density inclination measurement system according to claim 1, it is characterised in that：The sensing unit also wraps Bus voltage control module is included, the power end of the upper interface of bus series connection is respectively connecting to by bus voltage control module Control module and deviational survey sensing module.
- A kind of 5. bus-type high density inclination measurement system according to claim 4, it is characterised in that：Connect in the bus series connection The power supply terminal voltage of mouth is 9V, and the bus voltage control module is 5V mu balanced circuits.
- A kind of 6. bus-type high density inclination measurement system according to claim 1, it is characterised in that：The deviational survey sensing module Include at least one deviational survey sensor, the control module is connected with deviational survey sensor.
- A kind of 7. bus-type high density inclination measurement system according to claim 1, it is characterised in that：The sensing unit includes Have a stereoplasm tube, the control module and deviational survey sensing module may be contained within inside stereoplasm tube, the upper interface of bus series connection and Bus series connection lower interface is respectively arranged at stereoplasm tube both ends.
- 8. a kind of bus-type high density tilt measurement, it is characterised in that include following steps：Multiple sensing units are set and it is numbered, is cascaded between sensing unit by RS485 buses and is connected to data acquisition Module；Data acquisition module is communicated using time-division multiplexing (TDM) with multiple sensing units, obtains the deviational survey number of sensing unit According to；After the completion of the deviational survey data acquisition of all sensing units, parent server is sent automatically to by data acquisition module.
- A kind of 9. bus-type high density tilt measurement according to claim 8, it is characterised in that：The data acquisition module Communicated using time-division multiplexing (TDM) with multiple sensing units, the step for obtaining the deviational survey data of sensing unit, be specially： Data acquisition module sends acquisition instructions according to the number order of sensing unit, after the sensing unit for meeting instruction receives instruction Deviational survey data to data acquisition module is uploaded, upload finishes backed off after random bus concurrency and send completion instruction to data acquisition module, number Next acquisition instructions are sent according to acquisition module.
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| CN201710959678.6A CN107702696A (en) | 2017-10-16 | 2017-10-16 | A kind of bus-type high density inclination measurement system and method |
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| CN201710959678.6A CN107702696A (en) | 2017-10-16 | 2017-10-16 | A kind of bus-type high density inclination measurement system and method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112799336A (en) * | 2021-04-13 | 2021-05-14 | 江苏恒维智信息技术有限公司 | Edge calculation-based modular acquisition terminal and communication identification method |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102305618A (en) * | 2011-05-23 | 2012-01-04 | 国网电力科学研究院 | Series fixed wireless inclinometer |
| CN105887942A (en) * | 2016-04-22 | 2016-08-24 | 上海工程技术大学 | Automatic and intelligent foundation pit inclinometry method |
-
2017
- 2017-10-16 CN CN201710959678.6A patent/CN107702696A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102305618A (en) * | 2011-05-23 | 2012-01-04 | 国网电力科学研究院 | Series fixed wireless inclinometer |
| CN105887942A (en) * | 2016-04-22 | 2016-08-24 | 上海工程技术大学 | Automatic and intelligent foundation pit inclinometry method |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112799336A (en) * | 2021-04-13 | 2021-05-14 | 江苏恒维智信息技术有限公司 | Edge calculation-based modular acquisition terminal and communication identification method |
| CN112799336B (en) * | 2021-04-13 | 2021-06-22 | 江苏恒维智信息技术有限公司 | Edge calculation-based modular acquisition terminal and communication identification method |
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Effective date of registration: 20210115 Address after: 510000 No. 5 Lane three North Lane, Yuexiu District Temple Road, Guangzhou, Guangdong Applicant after: Guangzhou Guangjian Construction Engineering Testing Center Co.,Ltd. Applicant after: BEIJING LRK SCIENCE & TECHNOLOGY Co.,Ltd. Address before: 510600 No.5, Lane 3, North 1st Street, siyouxin Road, Yuexiu District, Guangzhou City, Guangdong Province Applicant before: GUANGZHOU CONSTRUCTION QUALITY & SAFETY TESTING CENTER Applicant before: BEIJING LRK SCIENCE & TECHNOLOGY Co.,Ltd. |