CN207730368U - Arch fiber grating wind pressure sensor - Google Patents
Arch fiber grating wind pressure sensor Download PDFInfo
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- CN207730368U CN207730368U CN201720870870.3U CN201720870870U CN207730368U CN 207730368 U CN207730368 U CN 207730368U CN 201720870870 U CN201720870870 U CN 201720870870U CN 207730368 U CN207730368 U CN 207730368U
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- wind pressure
- fiber grating
- pressure sensor
- sensor
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Abstract
Arch fiber grating wind pressure sensor is used the utility model is related to a kind of, the wind pressure sensor includes by Force system, sensor-based system, sliding support and pedestal, it is fixedly arranged on pedestal by Force system one end, the other end is connect with sliding support, it can freely stretch when encircleing shell by load action, and by displacement transfer to the fiber grating of sensor-based system.The sliding block of sliding support is along the free telescopic slide of sliding rail.The fiber grating of sensor-based system is received by the effect of Force system and is extended, and can be replied after load reduction.This sensor can attaching/detaching and portable function so that it can work well in different environments, and can also meet different civil engineering structures performance wind pressure monitorings during field measurement.Meanwhile by Mixed cascading networking, this sensor can realize multiple spot distributed measurement, and can realize that long-distance remote control monitors.When being demarcated before use, matched caliberating device can simulate uniformly distributed wind load, and multi-stage loading may be implemented；Wind pressure sensor to be calibrated need not be demarcated by standard wind pressure sensor, and has higher precision, meet engineering demand；More ancillary equipment is not needed, device is simple, easy to operate, and energy consumption is small, cost-effective.
Description
Technical field
The utility model is related to a kind of arch fiber grating wind pressure sensors, belong to and are suitable for large bridge, tall and slender structure etc.
Civil engineering structures Pressures field measurement.The sensor is mainly used in works in civil engineering and resists strong wind lotus
Experiments, works Pressures monitoring technical field and the Wind Engineering fields such as load.
Background technology
Wind load may cause the unstable of civil structure object, be allowed to generate excessive amount of deflection or deformation, result even in
Structural damage influences safety and the applicability of works.Therefore, the wind load of solution structure accurately and in time, to structure
The applicability of operation phase and the assessment of safety and monitoring are of great significance.Structural health is had become to the monitoring of wind load
One important content of monitoring.
Field measurement is the important means of cognitive structure object Wind Field characteristic.But since experimentation cost is relatively high,
The influence for the reasons such as the work period is longer, at the same the precision of measured data also with sensor mass, data acquisition and transmit, information
The factors such as storage and post-processing it is related, the space structure object wind load measurement research of domestic and international full-scale large size is simultaneously few.
It is measured and works Pressures two kinds of forms of measurement in general, the means of field measurement include far field wind speed and direction.Far field wind speed
The wind field information that the measurement of wind direction monitoring is not influenced by structure, this is highly difficult in practical operation, because sensor is always
Works is depended on, thus the wind speed and direction measured can always be influenced by works to varying degrees.In fact, almost
In all structure wind stability analyses, the wind speed and direction information of wind field all first passes through certain mathematics physics model conversion
At the wind pressure on works surface, the analysis of next step is then carried out again, therefore, the measurement directly to the wind pressure of building surface,
The drawbacks of some links can not only be saved, and be expected to that wind speed and direction is overcome to measure, it is possible to as a kind of very efficient
Means.
One is the multi-path pressure systems using Pitot tube principle for common wind pressure sensor.However, traditional wind pressure
Sensor is not suitable for being installed on all types of engineering structure surfaces, thus be difficult to realize to practical wind environment residing for works into
Row is permanently effective, monitors in real time.Most of all, tube chamber resonance easily occurs for the pressure measurement pipe-line system of catheter pressure composition, make
Output signal is distorted.
Another common sensor is to hinder the piezoresistive transducer of principle using silicon to measure wind pressure.Although it is linear
Good, relatively high, the micro-, low pressure measurement of realization may be implemented in sensitivity.But it is, in principle, that silicon piezoresistive pressure sensor is
Physical property type transducer based on silicon materials, silicon materials are influenced by environmental temperature, will produce prodigious zero temperature drift
Shifting and sensitivity temperature drift, and it is various informative, it is very unfavorable to the stability for improving device, while silicon piezoresistive pressure sensor makes
Used time must carry out temperature-compensating, otherwise be extremely difficult to real requirement；Complete technique for temperature compensation is established, cost can be increased,
Limit the promotion and application of silicon piezoresistive pressure sensor.
Before being worked using wind pressure sensor, wind pressure sensor should be demarcated first, determine its input with it is defeated
The relationship of output.In wind pressure measurement, the research of caliberating device and scaling method is most important, and stated accuracy also directly affects wind
The measurement accuracy of pressure sensor.
Existing wind pressure sensor caliberating device is generally divided into two classes.One is piston type calibration to decorate, by oil cylinder, piston
It is formed with counterweight, the size of pressure is determined by the ratio between the quality of counterweight and the sectional area of piston, to demarcate wind
Pressure sensor.This piston type caliberating device is complicated for operation, in order to improve measurement accuracy, eliminates friction resistance of the load on piston
Power and the ancillary equipment that uses is more, cost is higher, it is difficult to extensive use.Another caliberating device is to generate pressure using compression pump
Power acts directly on wind pressure sensor.The size for generating pressure is shown by standard wind pressure sensor, then to be calibrated
Wind pressure sensor applies identical pressure, to demarcate wind pressure sensor.The caliberating device needs more ancillary equipment, energy consumption
It is larger, it is complicated for operation, while applying stressed size and need to show that the precision of pressure measurement is by marking by standard wind pressure sensor
The precision of quasi- wind pressure sensor determines, in the case of not by standard wind pressure sensor, it is difficult to reach calibration request.It carries above
There are one common disadvantages for the two kinds of caliberating devices arrived, can not apply uniformly distributed load to wind pressure sensor.
Utility model content
The technical problem to be solved by the utility model is to for the transducer sensitivity of existing monitoring wind pressure technology
It is low, be not suitable for the defect used in open environment, a kind of arch fiber grating wind pressure sensor is provided, to meet civil engineering knot
Structure object surface is to the measurement request of wind pressure, accurately to measure the practical wind field lower surface pressure characteristic residing for works.
The utility model technical problem is solved by following proposal：A kind of arch fiber grating wind pressure sensor, optical fiber light
The wind transducer of grid, including by Force system, sensor-based system, sliding support and pedestal, wherein：
It is described by Force system to encircle shell as force-summing element, the one end for encircleing shell is fixedly arranged on pedestal, the other end and sliding branch
Seat is connected, and when making arch shell by load action, can freely stretch, and by displacement transfer to sensor-based system；
The sensor-based system includes fiber grating, is fixedly connected with block and sliding connection block；
The sliding support includes sliding rail and sliding block, and sliding block connects the fiber grating, and sliding rail is fixed on pedestal,
The fiber grating of sensor-based system is extended by the effect by Force system, and is replied after load reduction, and band movable slider is along cunning
The free telescopic slide of rail constitutes arch fiber grating wind pressure sensor.
The wind transducer of the arch fiber grating of the utility model will be fixed as by Force system, sensor-based system one it is whole
Body facilitates installation, is convenient for carrying.
Select arch shell as the main body by Force system, in conjunction with fiber-optic grating sensor perceptually element.Under Action of Wind pressure,
Arch shell deforms, fiber grating elongation, and dependent variable is directly proportional to the wind pressure for acting on arch shell surface, i.e., wind pressure is bigger, answers
Variable is also bigger.The variation of monitoring fiber grating can inverse go out the size of wind pressure.Fiber grating perceptually element is selected, it can
So that this wind pressure sensor has high-resolution, high-precision, high s/n ratio and high stability compared with other wind pressure sensors, together
When can adapt to strong electromagnetic and wet environment, adapt to the test request under different wild environments and bad weather condition.
In the fiber grating wind pressure sensor of the utility model, wind pressure is directly born on the arch shell surface by Force system
Wind pressure is transmitted on the fiber grating in sensor-based system by load, by the dependent variable for measuring fiber grating, you can by encircleing shell
Mechanical characteristic, inverse goes out the size of wind pressure.Compared with general sensor, power transmission is simple, clear.
Since the dependent variable of fiber grating has good linear relationship with wind pressure in the sensor-based system so that this wind pressure passes
Sensor need to only choose a small amount of sample and be demarcated.
On the basis of said program, the block that is fixedly connected is connected and fixed with sliding support sliding rail, sliding connection block and cunning
The sliding block of dynamic bearing is connected and fixed, and sliding connection block is moved with sliding block along sliding support sliding rail.
Block is fixedly connected in the sensor-based system to be fixedly connected with sliding support sliding rail, sliding connection block and sliding support
Sliding block is connected and fixed, and when encircleing shell wind-engaging swaging and becoming, sliding connection block is moved with sliding block along sliding support sliding rail.Due to passing
Link block and sliding support in sensing system are rigid connections, and making is simple, power transmission is clear.
On the basis of said program, two end of arch shell is equipped with connecting pin；One end is fixed on there are two foot on pedestal, separately
The foot of one end one is fixed on sliding support sliding block, and sliding support is located at the centre of pedestal.
The arch fiber grating wind pressure sensor of the utility model can work well in different environments, and energy
Meet civil engineering structures Pressures monitoring different during field measurement, and different test positions to wind pressure monitoring
Requirement.To encircle force structure based on shell, Action of Wind pressure is directly born, and can be monitoring through sensor to wind pressure
Design is converted into the monitoring to fiber grating strain amount.Using fiber grating as main sensing element so that this sensor with
Standard machinery, electrical type sensor are compared, and not only measured value spatial resolution is high, the output range of linearity is wide, bandwidth, signal-to-noise ratio
Height, transmission capacity is big, transmission loss is small, stable chemical performance, electrical insulation capability are good, small, light-weight, geometry is plastic
The advantages that, moreover it is possible to it is worked normally under the adverse circumstances such as strong electromagnetic, rainwater, high temperature.The installing of each system of this sensor/
Dismounting and portable function, can better adapt to various test environments.
This fiber grating wind pressure sensor can not only realize multiple spot distributed measurement, can also realize long-distance remote control monitor,
Therefore it will be expected to being constantly progressive for promotion actual measurement means, and then extensive wind loads on structure of carrying out is surveyed, and a large amount of preciousness is obtained
Measured data, these data results will become the grasp wind loads on structure mechanism of action and structural dynamic response and failure mechanism is most straight
The data connect provides most authoritative foundation to correct existing test method, theoretical model and formulating built-loading specification, therefore has
There is extensive future in engineering applications.
Arch fiber grating wind pressure sensor is demarcated before use, which is filled using a calibration
It sets, which includes calibration disk and loading equipemtn, and the wind pressure sensor of the arch fiber grating is placed in calibration disk
Middle fixation, loading equipemtn load it, are demarcated.
On the basis of said program, the calibration disk, including upper disk, lower wall and column, upper disk and lower wall pass through column
Connection, parallel and in horizontality, the bottom of wind pressure sensor to be measured is bonded fixation with lower panel surface for upper disk and lower wall.
On the basis of said program, it is to add that the upper disk, which has evenly distributed multiple limit holes, the loading equipemtn,
Needle is carried, load needle passes through limit hole to be moved freely in vertical direction and makes it perpendicular to upper disk, load needle acted on to be calibrated
Sensor arch shell on.There are evenly distributed multiple limit holes in upper disk, load needle can be made to be moved freely in vertical direction,
And ensure to load needle always perpendicular to upper disk.
Acanthin amount is loaded by adjusting to realize multi-stage loading, is realized according to added load and sensor output signal
The calibration of sensor.I.e. loading equipemtn is according to the different size of Action of Wind pressure metal needle different in the quality of Sensor Design
Shape object, when use, ensure plumbness.
The caliberating device of the arch fiber grating wind pressure sensor is mainly simulated wind pressure to the wind pressure sensor into rower
It is fixed.
The caliberating device of the utility model is simple in structure, easy to assembly, for accurate wind pressure sensor caliberating device, meets
Calibration demand needed for field measurement.
The caliberating device of the utility model have the beneficial effect that can effective simulation evenly load, overcome previous
Caliberating device is by applying load or not uniformly distributed distributed load come the shortcomings that calibration to sensor.It is not required to simultaneously
Wind pressure sensor to be calibrated is demarcated by standard wind pressure sensor.And more ancillary equipment is not needed, device letter
It is single, easy to operate, energy consumption is small, solve cost, have higher precision, meet the needs of engineering.
The utility model is advantageous in that：This sensor can attaching/detaching and portable function so that it can be
It works well under different environment, and civil engineering structures performance wind pressure different during field measurement can also be met
Monitoring.Meanwhile by Mixed cascading networking, this sensor can realize multiple spot distributed measurement, and can realize that long-distance remote control is supervised
It surveys.When being demarcated before use, matched caliberating device can simulate uniformly distributed wind load, and multistage may be implemented
Load；Wind pressure sensor to be calibrated need not be demarcated by standard wind pressure sensor, and has higher precision, meet engineering
Demand；More ancillary equipment is not needed, device is simple, easy to operate, and energy consumption is small, cost-effective.
Description of the drawings
The schematic top plan view of the fiber grating wind pressure sensor of Fig. 1 the utility model；
The schematic front view of the fiber grating wind pressure sensor of Fig. 2 the utility model；
The three-dimensional general structure schematic diagram of the fiber grating wind pressure sensor of Fig. 3 the utility model；
The three-dimensional Each part schematic diagram of the fiber grating wind pressure sensor of Fig. 4 the utility model；
The three-dimensional general structure schematic diagram of the caliberating device of Fig. 5 the use of the new type；
The three-dimensional portion structural schematic diagram of the caliberating device of Fig. 6 the utility model；
The calibration status diagram of Fig. 7 the utility model；
It is indicated in figure：
1 --- by Force system；
11 --- arch shell；12 --- arch shell connecting pin；
2 --- sensor-based system；
21 --- fiber grating；22 --- it is fixedly connected with block；23 --- sliding connection block；
3 --- sliding support；
31 --- sliding support sliding rail；32 --- sliding support sliding block；
4 --- pedestal；
5 --- calibration disk；
51 --- upper disk；52 --- column；53 --- lower wall；
6 --- load needle.
Specific implementation mode
The technical solution of the utility model is described in detail below in conjunction with the accompanying drawings：
As shown in Figures 1 to 4, a kind of arch fiber grating wind pressure sensor, the wind transducer based on fiber grating, packet
It includes by Force system 1, sensor-based system 2, sliding support 3 and pedestal 4, wherein：
It is described by Force system 1 to encircle shell 11 as force-summing element, one end of arch shell 11 is fixedly arranged on pedestal 4, the other end with
Sliding support 3 is connected, and when making arch shell 11 by load action, can freely stretch, and by displacement transfer to sensor-based system 2；
The sensor-based system 2 includes fiber grating 21, is fixedly connected with block 22 and sliding connection block 23；
The sliding support 3 includes sliding rail 31 and sliding block 32, and sliding block 32 connects the light by sliding connection block 23
Fine grating 21, sliding rail 31 are fixed on pedestal 4, and the fiber grating 21 of sensor-based system 2 is extended by the effect by Force system 1,
And replied after load reduction, band movable slider 32 constitutes arch fiber grating wind pressure sensing along 31 free telescopic slide of sliding rail
Device.
As shown in Figure 1, arch shell 11 is fixed on by encircleing shell connecting pin 12 one end two foot on pedestal 4, one foot of the other end
It is fixed on sliding support sliding block 32, sliding support 3 is located at the centre of pedestal 4.
As shown in Figures 2 and 3, it is fixedly connected with block 22 to be connected and fixed with sliding support sliding rail 31, sliding connection block 23 and cunning
Dynamic bearing sliding block 32 is connected and fixed, and can be moved together along sliding support sliding rail 31 with sliding block 32, sliding support sliding rail 31
It is fixed on pedestal 4.
Force structure based on arch shell 11, directly bears Action of Wind pressure.Under Action of Wind pressure, fiber grating 21 extends.Root
According to the mechanical model of this sensor, the relationship of wind pressure and 21 dependent variable of fiber grating is solved, it can be by fiber grating 21
The monitoring to wind pressure is realized in the measurement of strain.
In the fiber grating wind pressure sensor of the utility model, 11 surface of arch shell by Force system 1 is directly born
Wind pressure is transmitted on the fiber grating 21 in sensor-based system 2, by measuring its dependent variable, you can pass through arch by wind load
The mechanical characteristic of shell, inverse go out the size of wind pressure.Compared with general sensor, the power transmission of the sensor definitely, structure
It is simpler.
In the fiber grating wind pressure sensor of the utility model, in the sensor-based system 2 dependent variable of fiber grating with
Wind pressure has good linear relationship so that this wind pressure sensor need to only choose a small amount of sample and be demarcated.
As shown in figure 5, the caliberating device is mainly made of calibration disk 5 and loading device 6.Loading device is by multiple identical
Load needle composition, simulate to the evenly load of blast gauge.
As shown in fig. 6, the calibration disk 5 of the caliberating device is by disk 51, calibration disk column 52, calibration disk lower wall 53 on calibration disk
Composition.Calibration disk column 52 is respectively perpendicular to disk 51 and calibration disk lower wall 52 on calibration disk.
As shown in fig. 7, when the caliberating device of the utility model is worked, first by above-mentioned fiber grating wind pressure sensor
It is placed horizontally on calibration disk lower wall 51 and is fixed, then loaded using the load needle 6 of different model, pass through monitoring
The output quantity of sensor carries out the staking-out work to wind pressure sensor.
Above-mentioned is that this can be understood and applied for ease of those skilled in the art to the description of this sensor
Utility model.Person skilled in the art obviously easily can make various modifications to this sensor, and saying herein
Bright General Principle is applied in other sensors without having to go through creative labor.Therefore, the utility model is not limited to this
Embodiment, those skilled in the art's announcement according to the present utility model, do not depart from improvement that the utility model scope is made and
Modification should be all within the protection scope of the utility model.
Claims (7)
1. a kind of arch fiber grating wind pressure sensor, the wind transducer of fiber grating, including by Force system, sensor-based system,
Sliding support and pedestal, it is characterised in that：
It is described by Force system to encircle shell as force-summing element, the one end for encircleing shell is fixedly arranged on pedestal, the other end and sliding support phase
Even, it when making arch shell by load action, can freely stretch, and by displacement transfer to sensor-based system；
The sensor-based system includes fiber grating, is fixedly connected with block and sliding connection block；
The sliding support includes sliding rail and sliding block, and sliding block connects the fiber grating, and sliding rail is fixed on pedestal, senses
The fiber grating of system is extended by the effect by Force system, and load reduction after reply, band movable slider along sliding rail from
By telescopic slide, arch fiber grating wind pressure sensor is constituted.
2. arch fiber grating wind pressure sensor according to claim 1, it is characterised in that：It is described to be fixedly connected with block and cunning
Dynamic bearing sliding rail is connected and fixed, and the sliding block of sliding connection block and sliding support is connected and fixed, sliding connection block with sliding block along
Sliding support sliding rail moves.
3. arch fiber grating wind pressure sensor according to claim 1 or 2, it is characterised in that：The arch optical fiber
One caliberating device of calibration and usage of grating wind pressure sensor, which includes calibration disk and loading equipemtn, by the arch
The wind pressure sensor of shape fiber grating is placed in calibration disk and fixes, and loading equipemtn loads it, demarcated.
4. arch fiber grating wind pressure sensor according to claim 3, it is characterised in that：The calibration disk includes upper
Disk, lower wall and column, upper disk are connected with lower wall by column, and upper disk and lower wall are parallel and in horizontality, wind pressure to be measured
The bottom of sensor is bonded fixation with lower panel surface.
5. the caliberating device of arch fiber grating wind pressure sensor according to claim 4, it is characterised in that：Described is upper
Disk has evenly distributed multiple limit holes, and the loading equipemtn is load needle, load needle pass through limit hole vertical direction from
By moving and making it perpendicular to upper disk, load needle is acted on the arch shell of sensor to be calibrated.
6. the caliberating device of arch fiber grating wind pressure sensor according to claim 5, it is characterised in that：Pass through adjusting
Acanthin amount is loaded to realize multi-stage loading, the calibration of sensor is realized according to added load and sensor output signal.
7. the caliberating device of arch fiber grating wind pressure sensor according to claim 1 or 2, it is characterised in that：It is described
Arch shell connecting pin be set to two sides；One end is fixed on there are two foot on pedestal, and one foot of the other end is fixed on sliding support sliding block
On, sliding support is located at the centre of pedestal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720870870.3U CN207730368U (en) | 2017-07-18 | 2017-07-18 | Arch fiber grating wind pressure sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720870870.3U CN207730368U (en) | 2017-07-18 | 2017-07-18 | Arch fiber grating wind pressure sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207730368U true CN207730368U (en) | 2018-08-14 |
Family
ID=63089950
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720870870.3U Expired - Fee Related CN207730368U (en) | 2017-07-18 | 2017-07-18 | Arch fiber grating wind pressure sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207730368U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110455213A (en) * | 2019-09-19 | 2019-11-15 | 沈阳理工大学 | A kind of correcting device for fiber grating detection deformation |
-
2017
- 2017-07-18 CN CN201720870870.3U patent/CN207730368U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110455213A (en) * | 2019-09-19 | 2019-11-15 | 沈阳理工大学 | A kind of correcting device for fiber grating detection deformation |
| CN110455213B (en) * | 2019-09-19 | 2024-03-08 | 沈阳理工大学 | Correcting device for detecting deformation of fiber bragg grating |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180814 Termination date: 20210718 |
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| CF01 | Termination of patent right due to non-payment of annual fee |