CN106885508A - A kind of strain transducer of visualization of presence - Google Patents
A kind of strain transducer of visualization of presence Download PDFInfo
- Publication number
- CN106885508A CN106885508A CN201710165243.4A CN201710165243A CN106885508A CN 106885508 A CN106885508 A CN 106885508A CN 201710165243 A CN201710165243 A CN 201710165243A CN 106885508 A CN106885508 A CN 106885508A
- Authority
- CN
- China
- Prior art keywords
- strain
- circuit board
- strain transducer
- early warning
- flexible member
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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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
Abstract
The invention belongs to civil engineering monitoring device field, specifically related to a kind of strain transducer of visualization of presence, it includes flexible member, foil gauge, circuit board and live prior-warning device, flexible member is fixed on by geodesic structure, foil gauge is arranged on the surface of the flexible member, foil gauge is connected with circuit board, the deformation of foil gauge is converted into electric signal transmission in circuit board, circuit board is also connected with live prior-warning device, and circuit board includes balanced bridge, precise amplifying circuit, signal processing module, STM32 single-chip microcomputers and digital transmission module.The invention also discloses a kind of method for early warning based on above-mentioned strain transducer.Sensor of the invention passes through itself integrated warning lamp, the different degrees of malformation of different colours correspondence, engineering safety state is shown in real time, being capable of real-time, in situ, intelligible engineering monitoring and alarm mode there is provided one kind, live early warning and remote control are realized simultaneously, with preferable early warning effect.
Description
Technical field
The invention belongs to civil engineering monitoring device field, more particularly, to a kind of strain sensing of visualization of presence
Device, it can in time find dangerous situation, realize live and long-range synchronous early warning, and can carry out classification warning to dangerous situation.
Background technology
In the large-scale construction engineering structure such as high building, bridge, tunnel, over time, external environment condition corrodes, load
The reason such as effect and the material aging of itself, can cause the body of building engineering structure to produce deformation and crack.To these deformation
With being monitored and early warning for crack, counter-measure is taken as early as possible, can avoid the loss of personnel and property.Existing sensor
In equipment, following defect is there is：(1) existing strain monitoring, process is sufficiently complex, it is necessary to first paste foil gauge, reconnection is special
The deformeter of industry obtains correlated results, and foil gauge cannot be reused, and is inconvenient to paste under construction environment, professional
Deformeter is then because volume weight is larger, it has not been convenient to be carried to scene, and the workman at scene will not use instrument mostly, it is impossible to
Distinguish whether the strain value for measuring belongs to danger classes；(2) signal that the foil gauge of strain transducer is perceived is weaker, in the later stage
It is easily lost in processing procedure, causes early warning not in place；(3) existing strain transducer is general only realizes alarm at the scene, and
There are many engineering projects in more remote area, not necessarily there is staff at scene, therefore, even if having early warning also not necessarily
Can find in time；(4) warning system of existing strain transducer can only carry out alarm to dangerous situation, but can not be classified alarm,
Causing staff can not in time arrange suitable counter-measure.Additionally, existing sensor also have processing system complicated and
The shortcomings of cost is high.
Due to there is drawbacks described above and deficiency, this area is needed badly to make and is further improved, a kind of strain of design
Sensor, can in time find dangerous situation, realize live and long-range synchronous early warning, and can carry out classification police to dangerous situation
Show.
The content of the invention
For the disadvantages described above or Improvement requirement of prior art, the invention provides a kind of strain sensing of visualization of presence
Device, including flexible member, foil gauge, circuit board and live prior-warning device, the circuit on circuit board is processed signal, described
Live prior-warning device includes warning lamp, buzzer siren and exit signs.The sensor without human intervention, itself integrated biography
Feel, analyze, comparing, information issue, various functions such as early warning.The sensor introduces flexible member, is in order to foil gauge can be again
Use again, and save the complex process of stickup foil gauge in construction, using more facilitating, by itself integrated warning lamp (no
With the different degrees of malformation of color correspondence) display engineering safety state in real time, there is provided one kind can in real time, it is in situ, easy
The engineering monitoring and alarm mode of understanding, with preferable early warning effect.
To achieve the above object, according to one aspect of the present invention, there is provided a kind of strain transducer of visualization of presence,
Characterized in that, it includes flexible member, foil gauge, circuit board and live prior-warning device,
Wherein, during the flexible member is fixed on by geodesic structure, the surface configuration of the foil gauge and the flexible member
It is identical, and the middle part of flexible member is pasted onto, the foil gauge is connected with circuit board, and the deformation of foil gauge is converted into electric signal
It is transferred in circuit board, the circuit board is also connected with live prior-warning device,
The circuit board includes that balanced bridge, precise amplifying circuit, signal processing module, STM32 single-chip microcomputers sum are passed
Module.
Signal after the treatment such as balanced bridge, precise amplifying circuit, can at double be exaggerated in order to follow-up accurate place
Reason, and the signal after amplification can be converted into data signal by signal processing module, STM32 single-chip microcomputers and digital transmission module, be easy to
Follow-up transmission and control, improves the accuracy of alarm.
It is further preferred that the flexible member is dumbbell shape, the live prior-warning device includes that warning lamp, buzzing are alarmed
Device and exit signs.
Preferably, the warning lamp corresponds to the alarm of different stage respectively for LED and with multiple color.
Show that the flexible member of dumbbell shape is easy to fixed when mounted according to this more comparative test, and pass through to use
The warning lamp combination buzzer alarm and exit signs of different colours, carry out the harmful grade of early warning different stage, give work people
, can be preferably minimized for loss by the dangerous situation of the sufficient time correspondence different stage of member.
It is another aspect of this invention to provide that there is provided a kind of safe early warning side of the visualization of presence based on strain transducer
Method, it is characterised in that it uses strain transducer as described above, it is characterised in that specifically include following steps：
S1. the strain gauge adhesion in strain transducer is fixed on by geodesic structure on flexible member, then by flexible member
In, flexible member deforms with the deformation by geodesic structure, so as to obtain by the initial strain signal of geodesic structure；
S2. the initial strain signal that will be collected in step S1 is by the balanced bridge and precise amplifying circuit on circuit board
Treatment, the strain signal after being amplified；
S3. the data processing module on the incoming circuit board of strain signal after the amplification that will be obtained in step S2, at data
Strain signal after amplification is converted into data signal by the STM32 single-chip microcomputers in reason module；
S4. by step S3 by STM32 single-chip microcomputers treatment after data signal be transmitted separately to live early warning system and
Cloud platform early warning system, so as to realize live early warning and remote control.
It is further preferred that in step s 4, live early warning is according to several danger classes for dividing in advance, by step
Corresponding danger classes is put under by the data signal after the treatment of STM32 single-chip microcomputers, and control corresponding live early warning to fill in S3
Putting carries out early warning and shows.
Preferably, in step s 4, the live early warning dress includes warning lamp, buzzer siren and exit signs.
Preferably, in step s 4, it is LED in the warning lamp, and LED uses different colors to correspond to respectively not
The alarm of same level, when the strain of foil gauge exceedes certain limit, buzzer siren alarm while warning lamp is bright；
More comparative test shows, by warning lamp combination buzzer alarm and exit signs using different colours,
Carry out the harmful grade of early warning different stage, give staff the dangerous situation of sufficient time correspondence different stage, will can lose
It is preferably minimized.
Preferably, in step s 5, mould will be passed using number by the data signal after the treatment of STM32 single-chip microcomputers in step S3
Block is transmitted to cloud management platform, then sends information to manager by cloud management platform, realizes remote control.
Preferably, in step s 5, the data transfer uses Wifi, NB-IoT, 4G or 5G digital transmission module.
Preferably, in step s 5, the cloud principle platform is provided with the near threshold of data signal and shakes back stagnant guarantor
Protecting band.More comparative test shows, shakes back stagnant protection band and can efficiently reduce noise band by being set near threshold
The interference for coming, improves the accuracy of alarm.
In general, by the contemplated above technical scheme of the present invention compared with prior art, with advantages below and
Beneficial effect：
(1) strain transducer of visualization of presence of the invention, including flexible member, foil gauge, circuit board and scene are pre-
Alarm device, the circuit on circuit board is processed signal, without human intervention, itself integrated sensing, analyze, compare, information
Various functions such as issue, early warning.The sensor is become by itself integrated warning lamp, the different degrees of structure of different colours correspondence
Shape, in real time display engineering safety state, there is provided one kind can real-time, in situ, intelligible engineering monitoring and alarm mode, together
Shi Shixian scene early warning and remote control, with preferable early warning effect.
(2) signal of the present invention after balanced bridge, precise amplifying circuit etc. are processed, after being exaggerated in order at double
Continuous accurate treatment, and the signal after amplification can be converted into digital letter by signal processing module, STM32 single-chip microcomputers and digital transmission module
Number, it is easy to follow-up transmission and control, the accuracy of alarm is improved, and eliminate making for monitoring instrument (deformeter) of specialty
With complicated process instrumentation, is substituted by one piece of circuit board originally, has further facilitated monitoring, has saved cost.By using
The warning lamp combination buzzer alarm and exit signs of different colours, carry out the harmful grade of early warning different stage, give work people
, can be preferably minimized for loss by the dangerous situation of the sufficient time correspondence different stage of member.Shake back stagnant by being set near threshold
Protection band can efficiently reduce the interference that noise band is come, and improve the accuracy of alarm.
(3) alarm of the invention and alarm method can be applied in the engineerings such as tunnel, bridge, side slope, foundation ditch, its prison
Survey and warning function can provide safety guarantee for site operation personnel, and wind promptly and accurately is just made in accident, initial stage of disasters
Danger prompting, takes to withdraw and hides or remedy emergency measure, so as to avoid casualties and property loss.And alarm structure letter
Single, easily prepared, with low cost, suitable large-scale promotion is used.
Brief description of the drawings
Fig. 1 is the structure chart of strain transducer of the invention；
Fig. 2 is the workflow diagram of strain transducer of the invention；
Fig. 3 is the system the general frame of strain transducer of the invention；
Fig. 4 is strain transducer workflow diagram of the invention；
Fig. 5 (a) and (b) are foil gauge a quarter bridge precise amplifying circuit schematic diagrams of the invention；
Fig. 6 is strain early warning system flow chart of the invention；
Fig. 7 is live early warning system flow chart of the invention；
Fig. 8 is time stagnant protection figure that software of the invention is realized；
Fig. 9 is cloud platform workflow diagram of the invention；
The storage of Figure 10 data and transfer process figure.
Wherein：1- foil gauges；2- flexible members；3- circuit boards；4-LED indicator lamps；5- alarms.
Specific embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, it is right below in conjunction with drawings and Examples
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.As long as additionally, technical characteristic involved in invention described below each implementation method
Not constituting conflict each other can just be mutually combined.
Fig. 1 is the structure chart of strain transducer of the invention, as illustrated, it includes flexible member, foil gauge, circuit board
With live prior-warning device,
Wherein, the flexible member is dumbbell shape, and during the flexible member is fixed on by geodesic structure, the foil gauge and institute
The surface configuration for stating flexible member is identical, and is pasted onto the middle part of flexible member, and the foil gauge is connected with circuit board, will strain
The deformation of piece is converted into electric signal transmission in circuit board, and the circuit board is also connected with live prior-warning device, the circuit board
Include balanced bridge, precise amplifying circuit, signal processing module, STM32 single-chip microcomputers and digital transmission module.
Specifically, strain prompting early warning system takes resistance strain gage, electric bridge, and precision is amplified with early stage Proof-Of Principle electricity
Road, increased STM32F103 single-chip microcomputers, eight segment numeral pipes, light-touch switch key-press, wherein reserved RS232 communication interfaces, connection
Wifi, NB-IoT or 5G digital transmission module as collection in worksite, thresholding setting, sound and light alarm, fire escape indicating module.
The system is divided into field control system and tele-control system, and what wherein field control was taken is real-time early warning, bag
Siren and blinking red lamp early warning are included, has notified that field worker is confirmed that tele-control system is then cloud platform and work in time
The communication of journey field module, using Wifi, NB-IoT or 4G, 5G digital transmission modules, cloud platform energy Real-time Collection is various to scene
Strain data and alarm status.Cloud platform have alarm occur when, by Ethernet with SMGP to related responsibility
People sends corresponding warning information, while the method insured using dual link, is sent with wechat interface to responsible person concerned
Wechat information, and LBS (the Location Base System) positional information at scene is sent to correlation with wechat, short message form
Person liable and rescue personnel, use for treatment, rescue navigation.The exit signs at remote control scene and related crossing closing simultaneously
Indicate.
The comparative analysis of the strain transducer of table 1 and prior art
Present invention also offers a kind of safe early warning method of the visualization of presence based on strain transducer, it is used as above
Described strain transducer, it is characterised in that specifically include following steps：
S1. strain acquirement
By the strain gauge adhesion in strain transducer on flexible member, then flexible member is fixed on by geodesic structure,
Flexible member deforms with the deformation by geodesic structure, so as to obtain by the initial strain signal of geodesic structure；
S2. data processing
The initial strain signal that will be collected in step S1 passes through at balanced bridge and precise amplifying circuit on circuit board
Reason, the strain signal after being amplified；
Key componentses mainly have two in the present invention, are respectively resistance strain gage and precision operational-amplifier.Other are general
Logical amplifier (this project uses LM339), resistance capacitance, inductance, light emitting diode, switching diode use lowest accuracy grade
(resistance, the error of electric capacity 5%), such as shown in Fig. 5 (a) and Fig. 5 (b), their influence is avoided using circuit design skill, from
And Material Cost is reduced to greatest extent.
S3. the data processing module on incoming circuit board, STM32 single-chip microcomputers in data processing module by amplification after should
Varying signal is converted into data signal；
The core of notebook data processing module is STM32 processors, and foil gauge accesses electric bridge, is amplified by precision, to CPU's
ADC gathers strain value.
S4. early warning is strained
Strain early warning system can be divided into live early warning system and cloud platform early warning information pushes two parts, as shown in fig. 6, should
Become early warning system workflow as follows：
S4.1 scenes prior-warning device
Live prior-warning device is made up of 4 color LEDs, buzzer and exit signs, and LED modules with different colors lamp correspondence is different degrees of
Malformation, 4 color LED alert levels are followed successively by from low to high：In vain, it is blue, it is yellow, it is red, buzzer can be set in certain danger etc.
More than level start to pipe, exit signs start to light direction board more than certain danger classes.
Live prior-warning device part specific workflow figure as shown in Figure 7, the signal that will be obtained by precise amplifying circuit
After being transferred to STM32 processors, STM32 processors can be corresponding according to the data for obtaining and selected strain monitoring scope triggering
Prior-warning device.By selecting suitable range, can adjust as needed when assorted LED, buzzer and exit signs start pair
The strain value answered, for example, can adjust strain value brilliant white lamp when less than Y0, light blue lamp when between Y0 to Y1, between Y1 to Y2
Shi Lianghuang lamps, are sent out a warning during more than Y2, and buzzer is started more than Y1 in strain, and exit signs are lighted during more than Y2.
S4.2 cloud management platforms early warning information is pushed
Cloud management platform sends phase with SMGP by Ethernet when there is alarm to occur to responsible person concerned
The warning information of grade is answered, while the method insured using dual link, wechat information is sent with wechat interface to responsible person concerned,
And LBS (the Location Base System) positional informations at scene are sent to responsible person concerned and rescue people in wechat form
Member, uses for processing and rescuing navigation.The exit signs at remote control scene and related crossing closing simultaneously is indicated.Cloud management is put down
Platform uses the B/S architecture designs of multi-process, and database uses MySQL.Complete the protocol conversion with public security traffic system.Short message
Gateway protocol is using mobile CMPP (China Mobile Peer to Peer), UNICOM SGIP (S hort Message
Gateway Interface Protocol), telecommunications SMGP (Short Message Gate way Protocol) provide net
Close agreement.Wechat interface agreement uses the open protocol of Tencent.
In order to prevent Precision measurement from causing not stop to be eliminated to cloud platform report and alarm and alarm in the shake of thresholding annex, this hair
Bright being provided near threshold shakes back stagnant protection band, as shown in figure 8, X-axis is strain detecting numerical value, Y-axis is alarm (alarm：
1；Alarm clearing：0), alerted when strain value solid arrow direction increases above x1；When should compile value dotted line direction and reducing below x1
Horse back report and alarm does not recover, but to continue to be decreased below ability report and alarm during x0 and recover, and thus forms an x0
Shake protection band between~x1.So as to effectively prevent continually report and alarm and alarm clearing that strain value shake is caused.
The collection and storage of data for convenience, the present invention has reserved RS232 communication interfaces, connection WiFi, NB-IoT or
5G digital transmission modules as collection in worksite, thresholding setting, sound and light alarm, fire escape indicating module, be used to realize cloud platform
Management function；USB interface is reserved simultaneously, data can have been derived and stored in other equipment.
As it will be easily appreciated by one skilled in the art that the foregoing is only presently preferred embodiments of the present invention, it is not used to
The limitation present invention, all any modification, equivalent and improvement made within the spirit and principles in the present invention etc., all should include
Within protection scope of the present invention.
Claims (10)
1. a kind of strain transducer of visualization of presence, it is characterised in that it includes flexible member, foil gauge, circuit board and existing
Field prior-warning device,
Wherein, during the flexible member is fixed on by geodesic structure, the foil gauge is identical with the surface configuration of the flexible member,
And the middle part of flexible member is pasted onto, the foil gauge is connected with circuit board, and the deformation of foil gauge is converted into electric signal transmission
To in circuit board, the circuit board is also connected with live prior-warning device,
The circuit board includes balanced bridge, precise amplifying circuit, signal processing module, STM32 single-chip microcomputers and digital transmission module.
2. strain transducer as claimed in claim 1, it is characterised in that the flexible member is dumbbell shape, the scene is pre-
Alarm device includes warning lamp, buzzer siren and exit signs.
3. strain transducer as claimed in claim 1 or 2, it is characterised in that the warning lamp is LED and with various face
Color, corresponds to the alarm of different stage respectively.
4. a kind of safe early warning method of the visualization of presence based on strain transducer, it is characterised in that it uses the right such as will
Seek the strain transducer any one of 1-3, it is characterised in that specifically include following steps：
S1. by the strain gauge adhesion in strain transducer on flexible member, then flexible member is fixed on by geodesic structure, bullet
Property element deforms with the deformation by geodesic structure, so as to obtain by the initial strain signal of geodesic structure；
S2. the initial strain signal that will be collected in step S1 passes through at balanced bridge and precise amplifying circuit on circuit board
Reason, the strain signal after being amplified；
S3. the data processing module on the incoming circuit board of strain signal after the amplification that will be obtained in step S2, data processing mould
Strain signal after amplification is converted into data signal by the STM32 single-chip microcomputers in block；
S4. live early warning system and Yun Ping will be transmitted separately to by the data signal after the treatment of STM32 single-chip microcomputers in step S3
Platform early warning system, so as to realize live early warning and remote control.
5. strain transducer as claimed in claim 4, it is characterised in that in step s 4, live early warning is according to drawing in advance
Several danger classes divided, will put corresponding danger etc. under in step S3 by the data signal after the treatment of STM32 single-chip microcomputers
Level, and control corresponding live prior-warning device to carry out early warning to show.
6. strain transducer as claimed in claim 5, it is characterised in that in step s 4, the live early warning dress includes warning
Show lamp, buzzer siren and exit signs.
7. strain transducer as claimed in claim 6, it is characterised in that in step s 4, is LED in the warning lamp,
And LED corresponds to the alarm of different stage using different colors respectively, when the strain of foil gauge exceedes certain limit, warning
Buzzer siren alarm while lamp is bright.
8. strain transducer as claimed in claim 7, it is characterised in that in step s 5, will be mono- by STM32 in step S3
Data signal after the treatment of piece machine is transmitted to cloud management platform using digital transmission module, then sends information to pipe by cloud management platform
Reason person, realizes remote control.
9. strain transducer as claimed in claim 8, it is characterised in that in step s 5, the data transfer using Wifi,
NB-IoT, 4G or 5G digital transmission module.
10. strain transducer as claimed in claim 9, it is characterised in that in step s 5, the cloud principle platform is in numeral
The near threshold of signal is provided with shakes back stagnant protection band.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710165243.4A CN106885508A (en) | 2017-03-20 | 2017-03-20 | A kind of strain transducer of visualization of presence |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710165243.4A CN106885508A (en) | 2017-03-20 | 2017-03-20 | A kind of strain transducer of visualization of presence |
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| CN106885508A true CN106885508A (en) | 2017-06-23 |
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| CN201710165243.4A Pending CN106885508A (en) | 2017-03-20 | 2017-03-20 | A kind of strain transducer of visualization of presence |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109296012A (en) * | 2018-09-07 | 2019-02-01 | 东南大学 | NB-IoT wireless sensor, the method and system of diaphram wall earth horizontal displacement long term monitoring |
| CN109410546A (en) * | 2018-09-13 | 2019-03-01 | 东南大学 | NB-IoT wireless sensor and method for sensing for secular strain monitoring |
| CN109443610A (en) * | 2018-11-01 | 2019-03-08 | 重庆大学 | remote interactive monitoring device based on liquid metal sensor and monitoring method thereof |
| CN112197688A (en) * | 2020-09-28 | 2021-01-08 | 广东电网有限责任公司 | Early warning method and early warning device for deformation quantity of power transmission and distribution tower |
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|---|---|---|---|---|
| CN109296012A (en) * | 2018-09-07 | 2019-02-01 | 东南大学 | NB-IoT wireless sensor, the method and system of diaphram wall earth horizontal displacement long term monitoring |
| CN109410546A (en) * | 2018-09-13 | 2019-03-01 | 东南大学 | NB-IoT wireless sensor and method for sensing for secular strain monitoring |
| CN109443610A (en) * | 2018-11-01 | 2019-03-08 | 重庆大学 | remote interactive monitoring device based on liquid metal sensor and monitoring method thereof |
| CN112197688A (en) * | 2020-09-28 | 2021-01-08 | 广东电网有限责任公司 | Early warning method and early warning device for deformation quantity of power transmission and distribution tower |
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| CB03 | Change of inventor or designer information | ||
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Inventor after: Liu Huabei Inventor after: Xu Dongsheng Inventor after: Bin Xueyang Inventor after: Song Sirui Inventor before: Liu Huabei Inventor before: Xu Dongsheng Inventor before: Song Sirui |
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| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170623 |