CN207379490U - A kind of bus-type high density inclination measurement device - Google Patents
A kind of bus-type high density inclination measurement device Download PDFInfo
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- CN207379490U CN207379490U CN201721339542.7U CN201721339542U CN207379490U CN 207379490 U CN207379490 U CN 207379490U CN 201721339542 U CN201721339542 U CN 201721339542U CN 207379490 U CN207379490 U CN 207379490U
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- 238000006073 displacement reaction Methods 0.000 description 9
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Abstract
The utility model discloses a kind of bus-type high density inclination measurement devices, 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 utility model connects each sensing unit by bus carry mode, and so as to fulfill high density, high-precision data acquisition, system is easy for installation, and failure rate is low；And sensing unit timesharing occupies bus, realizes low-power consumption acquisition transmission, reduces interference.The utility model can be widely applied to engineering detecting field as a kind of bus-type high density inclination measurement device.
Description
Technical field
The utility model is related to engineering detecting field, especially a kind of bus-type high density inclination measurement device.
Background technology
Deeply mixing cement-soil pile monitoring be two level and more than monitoring safe class engineering must survey project, extensively using with foundation pit,
Tunnel, side slope, ground, track traffic, 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
Grade 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
Shifting 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 two kinds movable.Base pit engineering monitors
In the most commonly used is movable type inclinometer, i.e., first bury inclinometer pipe, slided per probe is put into pipe at regular intervals along guide groove,
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
It moves.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
In data acquisition, data acquisition is carried out per n/2 meters (n is integer) for pipe, and then calculated level displacement has portable, economical, several
According to acquisition density it is high the features such as, however there are following shortcomings in its practical application：
Firstth, measure auxiliary equipment (inclinometer pipe) and bury difficulty height：The elongated binding 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 procedures such as pier by laying bricks or stones, and in entire process, because inclinometer pipe take over loosely, it is close
Any one careless omission such as envelope is not tight, lifting deformation, direction dislocation, can cause the position supporting construction that 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 hovers per 0.5m, and pending data stablizes acquisition 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 stablized every time, then in entire data acquisition, equipment decentralization 50m promotes 50m, manually
It need to hover 100 times, 500 seconds, entire 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 acquisition 225 minutes when small (i.e. about 3.5), 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 variation magnitude of certain depth, and the horizontal displacement variable quantity of the depth is obtained by conversion, single
Point displacement calculates 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, 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, tailing,
It possesses the features such as automatic data collection, remote transmission, the acquisition frequency is high, single point precision is high, however exists in its practical application
Following shortcomings：
Firstth, measure auxiliary equipment (inclinometer pipe) and bury difficulty height：It is same with movable type inclinometer, it is 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, acquisition 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 to deviational survey nozzle (nozzle diameter 70mm), sensor will excessively cause conducting wire because single sensor needs lead
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 real-time measurement underground deformation, monitoring is set
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 influence equipment cost, monitoring accuracy and
Data-link integrity degree is unfavorable for high-density arrangement and the use of deviational survey detection net.
Utility model content
In order to solve the above-mentioned technical problem, the purpose of this utility model is：There is provided a kind of bus-type high density, high-precision,
Automate inclination measurement device.
Technical solution is used by the utility model：A kind of bus-type high density inclination measurement device, includes data acquisition
Module and at least two sensing units, the sensing unit include the upper interface of bus series connection, bus series connection lower interface, control mould
Block and deviational survey sensing module, the upper interface of bus series connection are connected to bus series connection lower interface, the control module by bus
Communicated by bus with data acquisition module, the control module is also connected with deviational survey sensing module, the sensing unit it is total
The upper interface of line series connection is used to connect the input terminal of data acquisition module or the bus series connection lower interface of other sensing units, the number
It is connected according to the input terminal of acquisition module 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 has further included bus voltage control module, the power supply of the upper interface of bus series connection
End is respectively connected 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 steady for 5V
Volt circuit.
Further, the deviational survey sensing module includes at least one deviational survey sensor, and the control module is passed 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.
The beneficial effects of the utility model are：Tthe utility model system connects each sensing unit by bus carry mode,
It so as to fulfill highdensity data acquisition, is fitted with measured object horizontal displacement height, data precision is high, and the system installation side
Just, the module damage in sensing unit does not influence whole line work, therefore failure rate is low；And same period sensing unit
Bus can be individually occupied, low-power consumption acquisition transmission is realized, reduces interference.
Description of the drawings
Fig. 1 is deviational survey schematic diagram；
Fig. 2 is the Organization Chart of Tthe utility model system；
Fig. 3 is the electrical block diagram of sensing unit in Tthe utility model system；
Fig. 4 is one specific embodiment circuit diagram of bus voltage control module in Tthe utility model system；
Fig. 5 is the organigram of sensing unit in Tthe utility model system.
Specific embodiment
Specific embodiment of the present utility model is described further below in conjunction with the accompanying drawings：
With reference to Fig. 2 and Fig. 3, a kind of bus-type high density inclination measurement device includes data acquisition module and at least two and passes
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 communicates, 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 terminal 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, the input terminal in data acquisition module accesses multiple sensing units simultaneously, can also sensing unit it
Between can cascade after be connected to the input terminal of data acquisition module, access way is flexible, can adjust accordingly 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 the voltage down to 200mV, communication quality is avoided to be subject to external environment, communication line
The interference of the factors such as quality.In addition, RS485 interfaces is used flexibly to expand to adapt to the supporting construction of different depth convenient for peripheral hardware,
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 since 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 has further included 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 connected 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.
Preferred embodiment is further used as, the bus series connection goes up the power supply terminal voltage of interface as 9V, the bus
Voltage control module is 5V regulator circuits, and a kind of specific implementation circuit of wherein 5V regulator circuits can refer to the schematic diagram of Fig. 4.
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.
With reference to Fig. 5, exemplified by the sensing unit there are two deviational survey sensing module is set, preferred embodiment party is further used as
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
It states and sealant pouring and sealing can be used in stereoplasm tube, both ends leakage connecting interface.
As one specific embodiment of the utility model, a kind of common workflow of bus-type high density inclination measurement device includes
Following steps：
Multiple sensing units are set and it is numbered, cascaded between sensing unit by RS485 buses and are connected to data
Acquisition module；
Data acquisition module communicates with multiple sensing units obtains the deviational survey data of sensing unit；
After the completion of the deviational survey data acquisition of all sensing units, parent service is sent automatically to by data acquisition module
Device.
The above are implementing to be illustrated to the preferable of the utility model, but the utility model creation is not limited to institute
State embodiment, those skilled in the art can also make a variety of etc. on the premise of without prejudice to the utility model spirit
It with conversion or replaces, these equivalent deformations or replacement are all contained in the application claim limited range.
Claims (7)
1. a kind of bus-type high density inclination measurement device, 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
It states 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 communicates, 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 terminal of data acquisition module or other sensing units connect lower interface, the input terminal of the data acquisition module with
The upper interface connection of bus series connection of at least one sensing unit.
2. a kind of bus-type high density inclination measurement device according to claim 1, it is characterised in that：It is connect in the bus series connection
Mouth and bus series connection lower interface use RS485 interfaces.
3. a kind of bus-type high density inclination measurement device according to claim 2, it is characterised in that：The data acquisition module
Using bus transceiver.
4. a kind of bus-type high density inclination measurement device 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 connected to by bus voltage control module
Control module and deviational survey sensing module.
5. a kind of bus-type high density inclination measurement device according to claim 4, it is characterised in that：It is connect in the bus series connection
The power supply terminal voltage of mouth is 9V, and the bus voltage control module is 5V regulator circuits.
6. a kind of bus-type high density inclination measurement device 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.
7. a kind of bus-type high density inclination measurement device 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.
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| CN201721339542.7U CN207379490U (en) | 2017-10-16 | 2017-10-16 | A kind of bus-type high density inclination measurement device |
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| CN201721339542.7U CN207379490U (en) | 2017-10-16 | 2017-10-16 | A kind of bus-type high density inclination measurement device |
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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 |
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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: 20210113 Address after: 510000 No. 5 Lane three North Lane, Yuexiu District Temple Road, Guangzhou, Guangdong Patentee after: Guangzhou Guangjian Construction Engineering Testing Center Co.,Ltd. Patentee 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 Patentee before: GUANGZHOU CONSTRUCTION QUALITY & SAFETY TESTING CENTER Patentee before: BEIJING LRK SCIENCE & TECHNOLOGY Co.,Ltd. |