CN109269395A - Remote interactive strain monitoring device and monitoring method for geotechnical engineering structure - Google Patents
Remote interactive strain monitoring device and monitoring method for geotechnical engineering structure Download PDFInfo
- Publication number
- CN109269395A CN109269395A CN201811293748.XA CN201811293748A CN109269395A CN 109269395 A CN109269395 A CN 109269395A CN 201811293748 A CN201811293748 A CN 201811293748A CN 109269395 A CN109269395 A CN 109269395A
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- Prior art keywords
- strain
- monitoring
- signal
- engineering structure
- geotechnical engineering
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Classifications
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- 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
- G01B7/16—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring the deformation in a solid, e.g. by resistance strain gauge
- G01B7/18—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring the deformation in a solid, e.g. by resistance strain gauge using change in resistance
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
- G08B21/18—Status alarms
-
- G—PHYSICS
- G08—SIGNALLING
- G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
- G08C17/00—Arrangements for transmitting signals characterised by the use of a wireless electrical link
- G08C17/02—Arrangements for transmitting signals characterised by the use of a wireless electrical link using a radio link
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
- Arrangements For Transmission Of Measured Signals (AREA)
Abstract
The invention discloses a remote interactive strain monitoring device and a monitoring method for a geotechnical engineering structure. The device can realize the remote real-time monitoring of the geotechnical engineering structure, has the advantages of simple principle and convenient installation, monitors a plurality of point locations in real time through a plurality of sensors, and sends electric signals to a remote communication base station through the communication part for collection processing, thereby breaking through the traditional point-to-point single monitoring system.
Description
Technical field
The present invention relates to geotechnical engineering monitoring technical fields, and in particular to a kind of geotechnical engineering structure long-distance interactive strain
Monitoring device.
Background technique
Artificial observation, semi-automatic observation and automatic Observation is presented in geotechnical engineering structure strain monitoring at present and that deposits show
Shape, the sensing equipment of use are mainly type vibration wire or resistance-type.Shown in prior art scenario following table:
Gradually developed at present to the intellectual monitoring of automation control, early warning direction based on apparatus measures, instrument record.
But artificial or semi-automatic monitoring, there are apparent time-domain blank, real-time is poor, and night, rainy day etc. are unfavorable
Under the conditions of be difficult to realize basic data collection task, acquisition data reliability is big by artifical influence factor, it is difficult to meet now
Automate real-time monitoring demand.Current existing automated monitoring means, to realize its function, it is entire monitor system include sensing,
Field is installed since system unit is more the parts (i.e. integrated level is not high) such as acquisition, transmission, power supply, lightning protection, installation attachment
Maintenance proposes high requirement.Secondly existing automatic observation system lays particular emphasis on data acquisition, to the reliabilities of data, rationally
Property does not carry out going deep into excavation.Existing its communication mode of automatic observation system of third is mostly point-to-point one-way communication, to live group
Netcom's news and device orientation control are not yet mature.Last existing automatic monitoring system is in visual presentation and live warning aspect
Still have to be hoisted.
Summary of the invention
In view of the above deficiencies, the object of the present invention is to provide a kind of geotechnical engineering structure long-distance interactive strain monitorings
Device and its monitoring method have the advantages that structure is simple, easy for installation, highly integrated, integrated, while can monitor in real time more
A point has broken traditional point-to-point single monitoring system.
To achieve the above object, the technical solution provided by the present invention is:
A kind of geotechnical engineering structure long-distance interactive strain monitoring device, the telecommunication including monitoring station and remotely connected
Base station, the monitoring station include become one the signal acquisition part of formula, signal processing, early warning drive part, communication
Part and display portion, the telecommunications base station are connect by wireless communication signal with the monitoring station, realize data transmission.
Preferably, the signal acquisition part is connected with multiple sensors, and the sensor is connected to signal using outer
Collecting part is built in the signal acquisition part.
Preferably, the sensor uses precision resister strain transducer, and the elastomer of sensor is in applied external force
Lower generation elastic deformation, the resistance strain gage for being pasted onto surface of elastomer also deform therewith, after resistance strain gage deformation, resistance value
It changes, resistance variations is then converted by electric signal by the corresponding measuring circuit of sensor, then the signal acquisition
Part by the electrical signal collection, amplify and be transferred to signal processing and handle.
Preferably, the signal processing includes embedding traffic filter and commenting to look into Processing Algorithm, for electric signal
It is handled, monitoring resistor dependent variable, and correspondence calculates strain pressure value.
Preferably, the early warning drive part is connected with combined aural and visual alarm, after straining pressure value and exceeding early warning range just
It can be issued and be alarmed by combined aural and visual alarm.
Preferably, the communication part includes LoRa communication module and communication antenna composition, the telecommunications base station pair
Communication antenna should be equipped with, tidal data recovering is carried out by the pressure signal that communication part transmits for remotely receiving.
Preferably, the display portion includes photovoltaic panel and OLED display screen semi-flexible, for showing equipment working state.
Preferably, the monitoring station and telecommunications base station are equipped with ferric phosphate lithium cell group, and are equipped with reserved charging
Interface.
A kind of geotechnical engineering structure long-distance interactive strain monitoring method, includes the following steps:
A, the electric signal that the resistance variations of each monitoring site are converted into is conveyed to and through by signal acquisition by sensor
Part by the electrical signal collection, amplify and be transferred to signal processing and handle；
B, the signal processing includes embedding traffic filter and commenting to look into Processing Algorithm, to electric signal
Reason, monitoring resistor dependent variable, and correspondence calculates strain pressure value P；
C, pressure signal is then transmitted to by the telecommunications base station by communication part and carries out tidal data recovering, supervised
Survey and early warning.
Preferably, the resistance value of wire is other than related with the property of material, also with the length of wire, cross section
Product is related, and wire is pasted on component, and when member stress deformation, the length and cross-sectional area of wire are also with component
One changes, and then resistance variations occur,
DR/R=Ks ε
Wherein, Ks is the sensitivity coefficient of material, and physical significance is the resistance change rate of unit strain, indicates such silk
Material resistance strain gage effect significantly whether, ε be measuring point at strain, be nondimensional amount,
For wire when generating strain effect, strain stress and resistance change rate dR/R are linear,
Stress P principle: P=K × (εi-ε0)
Wherein, P is to answer pressure value (units MPa), and K is calibration coefficient, ε0For zero point strain value (first readings), εiFor i state
When strain value.
The invention has the benefit that
The present invention communicates mould using strain sensing, signal acquisition part, signal processing, early warning drive part, LoRa
Block is, it can be achieved that geotechnical engineering structure remote real-time monitoring, while the signal acquisition part, signal processing, early warning driving
Partially, communication part and display portion become one formula design, advantage therefore, simple with principle, easy for installation, and
The present apparatus carries out multiple point real-time monitorings by multiple sensors, and sends telecommunication by communication part for electric signal
Base station carries out collecting processing, has broken traditional point-to-point single monitoring system.
With reference to the accompanying drawing with embodiment, the present invention is further described.
Detailed description of the invention
The drawings are intended to provide a further understanding of the invention, and constitutes part of specification, with following tool
Body embodiment is used to explain the present invention together, but is not construed as limiting the invention.In the accompanying drawings:
Fig. 1 and Fig. 2 is a kind of geotechnical engineering structure long-distance interactive strain monitoring device of the present invention using external and interior
Set the structural schematic diagram of two ways；
Fig. 3 is a kind of schematic diagram of geotechnical engineering structure long-distance interactive strain monitoring device top surface of the invention；
Fig. 4 is monitoring principle block diagram of the invention.
It is each in figure that the reference numerals are as follows.
Monitoring station A, telecommunications base station B, signal acquisition part 1, signal processing 2, early warning drive part 3, communication
Part 4, display portion 5, sensor 6, ferric phosphate lithium cell group 7, reserved charging interface 7a, transducing signal collecting part 8.
Specific embodiment
In order to describe the technical content, the structural feature, the achieved object and the effect of this invention in detail, below in conjunction with embodiment
And attached drawing is cooperated to be explained in detail.
Technical solution of the present invention is clearly and completely described below in conjunction with attached drawing, it is clear that described implementation
Example is a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, ordinary skill
Personnel's every other embodiment obtained without making creative work, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that term " center ", "upper", "lower", "left", "right", "vertical", "horizontal",
The orientation or positional relationship of the instructions such as "inner", "outside" is to be based on the orientation or positional relationship shown in the drawings, and is merely for convenience of retouching
It states the present invention and simplifies description, rather than the device or element of indication or suggestion meaning must have a particular orientation, with specific
Orientation construction and operation, therefore be not considered as limiting the invention.
A kind of geotechnical engineering structure long-distance interactive strain monitoring device referring to FIG. 1 to FIG. 4, including monitoring station A and remote
The telecommunications base station B of journey connection, the monitoring station A setting carry out real-time monitoring in geotechnical engineering structure position, monitoring are believed
It number acquires and is processed into electric signal and collected by being wirelessly transmitted to remotely located telecommunications base station B, be can reach to rock
The real time monitoring of native engineering structure, and stability is stronger.The monitoring station A include become one formula signal acquisition part 1,
Signal processing 2, early warning drive part 3, communication part 4 and display portion 5, the telecommunications base station B pass through channel radio
News signal is connect with the monitoring station A, realizes data transmission.Signal acquisition part 1, letter in heretofore described monitoring station A
Number processing part 2, early warning drive part 3, communication part 4 and display portion 5 become one formula design, and installation and deployment are more just
It is prompt.
Further, the signal acquisition part 1 be connected with multiple sensors 6, it can be achieved that multiple points monitoring, and this
In embodiment, the sensor 6 uses and is connected to signal acquisition part 1 outside or is built in 1 two kinds of signal acquisition part side
Formula, wherein built-in sensors form transducing signal collecting part 8.
In the present embodiment, the sensor 6 uses precision resister strain transducer, and the elastomer of sensor 6 is outside
Elastic deformation is generated under portion's active force, the resistance strain gage for being pasted onto surface of elastomer also deforms therewith, resistance strain gage deformation
Afterwards, resistance value changes, and resistance variations is then converted into electric signal by the corresponding measuring circuit of sensor 6, then institute
State signal acquisition part 1 by the electrical signal collection, amplify and be transferred to signal processing 2 and handle.
The signal processing 2 includes embedded traffic filter and adjustment Processing Algorithm, to electric signal
Reason, monitoring resistor dependent variable, and correspondence calculates strain pressure value.
The early warning drive part 3 is connected with combined aural and visual alarm, will pass through after strain pressure value exceeds early warning range
Combined aural and visual alarm issues alarm.
The communication part 4 includes that LoRa communication module and communication antenna form, and the telecommunications base station B correspondence is set
There is communication antenna for remotely receiving the pressure signal transmitted by communication part 4 progress tidal data recovering.It can be by more in the present invention
A sensor 6 carries out multiple point real-time monitorings, and sends telecommunications base station B by communication part 4 for electric signal and carry out
Collect processing, breaks traditional point-to-point single monitoring system.
In the present embodiment, the display portion 5 is set to the top surface of device, and display portion 5 includes photovoltaic panel semi-flexible
And OLED display screen implements observation curve etc., and the photovoltaic panel semi-flexible uses sunk type for showing equipment working state
Insertion scheme is pasted on outer casing top surface.
Further, the monitoring station A and telecommunications base station B are equipped with ferric phosphate lithium cell group 7, and are equipped with reserved
Charging interface 7a.
A kind of geotechnical engineering structure long-distance interactive strain monitoring method, includes the following steps:
A, it is transmitted simultaneously by the electric signal (voltage or electric current) that the resistance variations of each monitoring site are converted by sensor 6
By signal acquisition part 1 by the electrical signal collection, amplify and be transferred to signal processing 2 and handle；
B, the signal processing 2 includes embedding traffic filter and commenting to look into Processing Algorithm, for carrying out to electric signal
Processing, monitoring resistor dependent variable, and correspondence calculates strain pressure value P；
C, pressure signal is then transmitted to by the telecommunications base station B by communication part 4 and carries out tidal data recovering, carried out
Monitoring and early warning.
Referring to Fig. 1 to Fig. 4, the working principle of the invention: the original observed quantity of device is voltage or current signal, root
Resistance value is obtained according to electrical characteristic, bond material property parses to obtain microstrain, and then obtains the stress of monitoring object.It should
The electric signal that the resistance variations of each monitoring site are converted into is conveyed to and through signal acquisition part by sensor 6 by monitoring device
Point 1 by the electrical signal collection, amplify and be transferred to signal processing 2 and handle, Observation principle is as follows: the electricity of wire
Resistance value is other than related with the property of material, and also with the length of wire, cross-sectional area is related.Wire is pasted onto component
On, when member stress deformation, the length and cross-sectional area of wire change also with component one, and then resistance occurs and becomes
Change.
DR/R=Ks ε
Wherein, Ks is the sensitivity coefficient of material, and physical significance is the resistance change rate of unit strain, indicates such silk
Material resistance strain gage effect significantly whether.ε is to strain at measuring point, is nondimensional amount, but traditionally still give unit microstrain,
Conventional sign μ ε is indicated.
It follows that wire is when generating strain effect, strain stress and resistance change rate dR/R are linear, this is just
It is the theoretical basis that component strain is measured using metal strain plate.
Stress P principle: P=K × (εi-ε0)
Wherein, P is to answer pressure value (units MPa), and K is calibration coefficient, ε0For zero point strain value (first readings), εiFor i state
When strain value.
In conclusion the signal processing 2 can be calculated by the microstrain of resistance strain gage answers pressure value, then
Strain signal is shown in display portion 5, and telecommunications base station B is transmitted to by communication part 4 and is collected, is realized
The real time monitoring of each monitoring point.
According to the disclosure and teachings of the above specification, those skilled in the art in the invention can also be to above-mentioned embodiment party
Formula is changed and is modified.Therefore, the invention is not limited to the specific embodiments disclosed and described above, to of the invention
Some modifications and changes should also be as falling into the scope of the claims of the present invention.In addition, although being used in this specification
Some specific terms, these terms are merely for convenience of description, does not limit the present invention in any way, using with its
The same or similar other devices, all fall in the scope of protection of the present invention.
Claims (10)
1. a kind of geotechnical engineering structure long-distance interactive strain monitoring device, it is characterised in that: including monitoring station (A) and remotely connect
The telecommunications base station (B) connect, the monitoring station (A) include become one the signal acquisition part (1) of formula, signal processing part
(2), early warning drive part (3), communication part (4) and display portion (5), the telecommunications base station (B) is divided to pass through channel radio
News signal is connect with the monitoring station (A), realizes data transmission.
2. a kind of geotechnical engineering structure long-distance interactive strain monitoring device as described in claim 1, it is characterised in that: described
Signal acquisition part (1) is connected with multiple sensors (6), and the sensor (6) uses and is connected to signal acquisition part (1) outside
Or it is built in the signal acquisition part (1).
3. a kind of geotechnical engineering structure long-distance interactive strain monitoring device as claimed in claim 2, it is characterised in that: described
Sensor (6) uses precision resister strain transducer, and the elastomer of sensor (6) generates elastic shape under applied external force
Become, the resistance strain gage for being pasted onto surface of elastomer also deforms therewith, and after resistance strain gage deformation, resistance value changes, so
Resistance variations are converted by electric signal (voltage or current signal) by the corresponding measuring circuit of sensor (6) afterwards, it is then described
Signal acquisition part (1) by the electrical signal collection, amplify and be transferred to signal processing (2) and handle.
4. a kind of geotechnical engineering structure long-distance interactive strain monitoring device as claimed in claim 3, it is characterised in that: described
Signal processing (2) includes embedding traffic filter and commenting to look into Processing Algorithm, for handling electric signal, monitoring resistor
Dependent variable, and correspondence calculates strain pressure value.
5. a kind of geotechnical engineering structure long-distance interactive strain monitoring device as claimed in claim 4, it is characterised in that: described
Early warning drive part (3) is connected with combined aural and visual alarm, will pass through combined aural and visual alarm after strain pressure value exceeds early warning range
Issue alarm.
6. a kind of geotechnical engineering structure long-distance interactive strain monitoring device as claimed in claim 4, it is characterised in that: described
Communication part (4) includes LoRa communication module and communication antenna composition, and the telecommunications base station (B) is correspondingly provided with communication antenna
Tidal data recovering is carried out by the pressure signal of communication part (4) transmission for remotely receiving.
7. a kind of geotechnical engineering structure long-distance interactive strain monitoring device as described in claim 1, it is characterised in that: described
Display portion (5) includes photovoltaic panel and OLED display screen semi-flexible, for showing equipment working state.
8. a kind of geotechnical engineering structure long-distance interactive strain monitoring device as described in claim 1, it is characterised in that: described
Monitoring station (A) and telecommunications base station (B) are equipped with ferric phosphate lithium cell group (7), and are equipped with reserved charging interface (7a).
9. a kind of geotechnical engineering structure long-distance interactive strain monitoring method, which comprises the steps of:
A, the electric signal (voltage or electric current) that the resistance variations of each monitoring site are converted into is transmitted and is led to by sensor (6)
Cross signal acquisition part (1) by the electrical signal collection, amplify and be transferred to signal processing (2) and handle；
B, the signal processing (2) includes embedding traffic filter and commenting to look into Processing Algorithm, to electric signal
Reason, monitoring resistor dependent variable, and correspondence calculates strain pressure value P；
C, pressure signal is then transmitted to by the telecommunications base station (B) by communication part (4) and carries out tidal data recovering, carried out
Monitoring and early warning.
10. a kind of geotechnical engineering structure long-distance interactive strain monitoring method as claimed in claim 9, which is characterized in that gold
Belong to the resistance value of silk other than related with the property of material, also with the length of wire, cross-sectional area is related, and wire is glued
It is attached on component, when member stress deformation, the length and cross-sectional area of wire change also with component one, and then occur
Resistance variations,
DR/R=Ks ε
Wherein, Ks is the sensitivity coefficient of material, and physical significance is the resistance change rate of unit strain, indicates such silk material electricity
Whether hindering foil gauge effect significantly, it is nondimensional amount that ε, which is to strain at measuring point,
For wire when generating strain effect, strain stress and resistance change rate dR/R are linear,
Stress P principle: P=K × (εi-ε0)
Wherein, P is to answer pressure value (units MPa), and K is calibration coefficient, ε0For zero point strain value (first readings), εiTo be answered when i state
Variate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811293748.XA CN109269395A (en) | 2018-11-01 | 2018-11-01 | Remote interactive strain monitoring device and monitoring method for geotechnical engineering structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811293748.XA CN109269395A (en) | 2018-11-01 | 2018-11-01 | Remote interactive strain monitoring device and monitoring method for geotechnical engineering structure |
Publications (1)
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| CN109269395A true CN109269395A (en) | 2019-01-25 |
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| CN201811293748.XA Pending CN109269395A (en) | 2018-11-01 | 2018-11-01 | Remote interactive strain monitoring device and monitoring method for geotechnical engineering structure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110365757A (en) * | 2019-07-02 | 2019-10-22 | 牟华锋 | A kind of geotechnical engineering data acquisition and processing (DAP) integral system and its workflow |
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| DE19751241A1 (en) * | 1996-11-29 | 1998-06-04 | Hansa Metallwerke Ag | Appliance for determining and monitoring filling level of bath tub or similar container to avoid overfilling |
| CN101519963A (en) * | 2009-03-28 | 2009-09-02 | 中国矿业大学 | Filling mining multi-information dynamic monitoring method |
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| CN110365757A (en) * | 2019-07-02 | 2019-10-22 | 牟华锋 | A kind of geotechnical engineering data acquisition and processing (DAP) integral system and its workflow |
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