CN110044392A - A kind of pre- fibre optical sensor being embedded in precast construction - Google Patents
A kind of pre- fibre optical sensor being embedded in precast construction Download PDFInfo
- Publication number
- CN110044392A CN110044392A CN201910147920.9A CN201910147920A CN110044392A CN 110044392 A CN110044392 A CN 110044392A CN 201910147920 A CN201910147920 A CN 201910147920A CN 110044392 A CN110044392 A CN 110044392A
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- Prior art keywords
- shell
- embedded
- detection fiber
- push
- optical sensor
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- 239000000835 fiber Substances 0.000 title claims abstract description 68
- 238000010276 construction Methods 0.000 title claims abstract description 30
- 230000003287 optical effect Effects 0.000 title claims abstract description 28
- 238000001514 detection method Methods 0.000 claims abstract description 46
- 230000001105 regulatory effect Effects 0.000 claims abstract description 13
- 239000011241 protective layer Substances 0.000 claims description 2
- 230000035945 sensitivity Effects 0.000 abstract description 11
- 239000013307 optical fiber Substances 0.000 description 8
- 238000010586 diagram Methods 0.000 description 4
- 238000006073 displacement reaction Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 229920001971 elastomer Polymers 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 239000005060 rubber Substances 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000010287 polarization Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
- G01D5/26—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light
- G01D5/268—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light using optical fibres
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optical Transform (AREA)
Abstract
The present invention provides a kind of fibre optical sensors being embedded in precast construction in advance; including detection fiber and shell; the detection fiber wraps up matcoveredn; the shell is inner hollow; one end of the shell is equipped with opening; it is characterized by: one end of the detection fiber is located in the shell and is fixedly connected with the shell; the other end of the detection fiber is pierced by the shell from the opening; the opening is equipped with regulating device, and the regulating device includes fixed ring, adjusting knob and push-and-pull strut.The strain of precast construction is detected by the way that detection fiber is arranged inside the shell, structure is simple, by the way that regulating device is arranged, to adjust the prestressing force of detection fiber, to adjust the sensitivity of sensor, the sensitivity of sensor is adjusted according to wanted pre-buried different precast constructions, it is easy to use, flexibly, to keep its service life controllable.
Description
Technical field
The present invention relates to sensor technical fields.
Specifically, being to be related to a kind of fibre optical sensor being embedded in precast construction in advance.
Background technique
Fibre optical sensor is a kind of sensor that the state of measurand is changed into measurable optical signal.Fibre optical sensor
Working principle be by the light beam of light source incidence via optical fiber be sent into modulator, it is mutual with extraneous measured parameter in modulator
Effect, makes intensity, wavelength, frequency, phase, the polarization state etc. of the optical property such as light of light change, becomes the light modulated
Signal obtains measured parameter after being sent into photoelectric device, demodulated device using optical fiber.Whole process, light beam are imported via optical fiber,
By projecting again after modulator, wherein the effect of optical fiber is transmitting beam first, followed by plays the role of modulator.Because of its tool
There is the advantages that not good without power supply, long-term reliability and stability by electromagnetic interference, scene, long transmission distance to be answered extensively
With.Fibre optical sensor is first embedded in precast construction by many sensors in use, generally requiring, and is fixed on structure with construction
Inside, to achieve the purpose that detection.Identical sensor is embedded in required essence in the interior or different components of different precast constructions
Degree is different, so that the service life of sensor is also different, the prestressing force of fibre optical sensor and its service life have direct relation, in advance
Stress is bigger, and both tensile force was bigger, and the service life of optical fiber is shorter, and the existing detection fiber for pre-buried fibre optical sensor is answered in advance
Power is non-adjustable, is unable to satisfy demand.
Summary of the invention
It is an object of the invention to overcome the shortcoming of above-mentioned traditional technology, provide that a kind of structure is simple, can be applied to
In a variety of precast constructions, the fibre optical sensor of sensitivity is adjusted.
The purpose of the present invention is what is reached by following technical measures: a kind of Fibre Optical Sensor being embedded in precast construction in advance
Device, including detection fiber and shell, the detection fiber wrap up matcoveredn, and the shell is inner hollow, the shell
One end is equipped with opening, it is characterised in that: and one end of the detection fiber is located in the shell and is fixedly connected with the shell,
The other end of the detection fiber is pierced by the shell from the opening, and the opening is equipped with regulating device, the regulating device
Including fixed ring, adjusting knob and push-and-pull strut, one end suit of the fixed ring on the housing, and is consolidated with the shell
Fixed connection, one end and the opening of the push-and-pull strut are slidably connected, and the adjusting knob is sleeved in the fixed ring, institute
It states adjusting knob to be threadedly coupled with the push-and-pull strut, the push-and-pull strut is equipped with control mouth, and the detection fiber passes through described
Control mouth, the detection fiber go out to be equipped with position limiting convex ring corresponding with the control mouth.
The part that detection fiber is located at shell and pushes and pulls in strut is used to detect signal, and sensor is embedded in precast construction
Interior, when geodesic structure shakes, the detection fiber in shell can shake with shell, so that detection fiber be made to produce
Raw strain provides and extraneous corresponding feedback signal to change its projection or reflection wavelength.And regulating device adjusts detection
The prestressing force of optical fiber, one end and the shell of detection fiber are fixed, and the other end is cooperated by position limiting convex ring and control mouth, and rotation is adjusted
Knob, push-and-pull strut are slided along shell, and detection fiber is driven to tense or loosen, to adjust the prestressing force of detection fiber, are adjusted
The sensitivity of detection.
A kind of improvement as above-mentioned technical proposal: the fixed ring includes the first stop collar and the second stop collar, described
First stop collar is connected with second stop collar by fixed strip.
A kind of improvement as above-mentioned technical proposal: first stop collar is fixedly connected with the shell, and described second
The interior diameter of stop collar is less than the overall diameter of the adjusting knob.
A kind of improvement as above-mentioned technical proposal: one end of the push-and-pull strut and the cage connection is equipped with draw runner,
The draw runner is arranged along the push-and-pull strut lengths direction.
A kind of improvement as above-mentioned technical proposal: the shell is equipped with sliding slot, and the sliding slot is set with draw runner cooperation
It sets.
A kind of improvement as above-mentioned technical proposal: the adjusting knob be equipped with internal screw thread, the push-and-pull strut equipped with
The external screw thread of the screw-internal thread fit.
A kind of improvement as above-mentioned technical proposal: the push-and-pull strut is arranged in far from the shell in the external screw thread
One end.
A kind of improvement as above-mentioned technical proposal: the outer surface of the adjusting knob is equipped with raised line.
By adopting the above-described technical solution, compared with prior art, the invention has the advantages that the present invention provides one kind
The fibre optical sensor being embedded in precast construction in advance, the strain of precast construction is detected by the way that detection fiber is arranged inside the shell, is tied
Structure is simple, by the way that regulating device is arranged, to adjust the prestressing force of detection fiber, so that the sensitivity of sensor is adjusted, according to institute
Pre-buried different precast constructions are wanted to adjust the sensitivity of sensor, it is easy to use, flexibly, to make its service life can
Control.
Present invention will be further explained below with reference to the attached drawings and specific embodiments.
Detailed description of the invention
Attached drawing 1 is a kind of overall structure diagram for being embedded in the fibre optical sensor in precast construction in advance of the invention.
Attached drawing 2 is a kind of explosive view of regulating device for being embedded in the fibre optical sensor in precast construction in advance of the invention.
Attached drawing 3 is a kind of push-and-pull branching rod structure schematic diagram for being embedded in the fibre optical sensor in precast construction in advance of the invention.
Attached drawing 4 is a kind of fixed ring structural schematic diagram for being embedded in the fibre optical sensor in precast construction in advance of the invention.
Attached drawing 5 is a kind of adjusting knob structural schematic diagram for being embedded in the fibre optical sensor in precast construction in advance of the invention.
Specific embodiment
Embodiment: as shown in attached drawing 1-5, a kind of pre- fibre optical sensor being embedded in precast construction, including 1 He of detection fiber
Shell 2, the detection fiber wrap up matcoveredn 3, and the shell 2 is inner hollow, and one end of the shell 2 is equipped with opening
21, it is characterised in that: one end of the detection fiber 1 is located in the shell 2 and is fixedly connected with the shell 2, the inspection
The other end for surveying optical fiber 1 is pierced by the shell 2 from the opening 21, and the opening 21 is equipped with regulating device, the regulating device
Including fixed ring 4, adjusting knob 5 and push-and-pull strut 6, one end of the fixed ring 4 is sleeved on the shell 2, and with it is described
Shell 2 is fixedly connected, and one end and the opening 21 of the push-and-pull strut 6 are slidably connected, and the adjusting knob 5 is sleeved on described
In fixed ring 4, the adjusting knob 5 is threadedly coupled with the push-and-pull strut 6, and the push-and-pull strut 6 is equipped with control mouth 61, described
Detection fiber 1 passes through the control mouth 61, and the detection fiber 1 goes out to be equipped with position limiting convex ring 12 corresponding with the control mouth 61.
The part that detection fiber is located at shell and pushes and pulls in strut is used to detect signal, and sensor is embedded in precast construction
Interior, when geodesic structure shakes, the detection fiber in shell can shake with shell, so that detection fiber be made to produce
Raw strain provides and extraneous corresponding feedback signal to change its projection or reflection wavelength.And regulating device adjusts detection
The prestressing force of optical fiber, one end and the shell of detection fiber are fixed, and the other end is cooperated by position limiting convex ring and control mouth, and rotation is adjusted
Knob, push-and-pull strut are slided along shell, and detection fiber is driven to tense or loosen, to adjust the prestressing force of detection fiber, are adjusted
The sensitivity of detection.In the present embodiment, shell is made of stainless steel, can prevent in by rolling influence sensor just
Often work, protective layer are made of EP rubbers polymer, and EP rubbers polymer has good chemicals-resistant, electrical insulating property
Energy, impact elasticity and hot water resistance.
As shown in figure 4, the fixed ring 4 includes the first stop collar 41 and the second stop collar 42, first stop collar 41
It is connected with second stop collar 42 by fixed strip 43.As shown in Figs. 1-2, first stop collar 41 and the shell 2 are solid
Fixed connection, the interior diameter of second stop collar 42 are less than the overall diameter of the adjusting knob 5.Fixed ring is for limiting adjusting rotation
Button makes adjusting knob can be only positioned inside and the rotation of fixed ring, and cannot adjust rotation in rotation in this way along axially displaced
When button, adjusting knob can only drive push-and-pull strut to do axial displacement and axial displacement will not occur for adjusting knob itself, improve
The relationship of the displacement of the displacement accuracy of push-and-pull strut, specific adjusting knob rotational steps and push-and-pull strut regards concrete condition
Depending on.
As shown in Fig. 2, one end that the push-and-pull strut 6 is connect with the shell 2 is equipped with draw runner 62, the draw runner 62 is along institute
State push-and-pull 6 length direction of strut setting.The shell 2 is equipped with sliding slot 22, and the sliding slot 22 is equipped with the draw runner 62.It pushes away
It draws strut 6 to pass through the sliding slot 22 worked in coordination and draw runner 62 to slide along shell 2.The quantity of draw runner and sliding slot is set as needed i.e.
Can, in the present embodiment, three groups are set as, two groups or four groups can also be set.As shown in Figure 1, the outside of the control mouth of push-and-pull strut is equipped with
Position limiting convex ring, rotation adjusting knob make to push and pull strut to, detection fiber tensile force increase mobile far from shell direction, detection fiber
Sensitivity improve, sensor is particularly suited in the high fabricated device of sensitivity requirement, rotates adjusting knob to opposite direction, pushes away
Strut is drawn to reduce to the tensile force close to the movement of shell direction, detection fiber, sensitivity decline, sensor is suitable for sensitivity
In fabricated device of less demanding.
As shown in Figure 3 and Figure 5, the adjusting knob 5 is equipped with internal screw thread 51, and the push-and-pull strut 6 is equipped with and the interior spiral shell
The external screw thread 63 that line 51 cooperates.The described push-and-pull one end of strut 6 far from the shell 2 is arranged in the external screw thread 63.
When installation, adjusting knob is sleeved in fixed ring from one end of the first stop collar of fixed ring first, will test light
Fibre sequentially passes through control hole, the adjusting knob, fixed ring of push-and-pull strut, and then one end fixed with shell is using the technique welded
It is fixedly connected, the internal screw thread of adjusting knob and the external screw thread for pushing and pulling strut is cooperatively connected, push and pull the draw runner of strut and outer
The sliding slot of shell is slidably connected, and is finally fixedly connected with the first stop collar of fixed ring with shell, in the present embodiment, is adopted
It is fixed with the mode of welding, stable connection.
As shown in figure 5, the outer surface of the adjusting knob is equipped with raised line 52.When raised line can increase rotation of adjustment knob
Frictional force conveniently turns.
Claims (8)
1. a kind of fibre optical sensor being embedded in precast construction in advance, including detection fiber and shell, the detection fiber are enclosed with
Protective layer, the shell are inner hollow, and one end of the shell is equipped with opening, it is characterised in that: the one of the detection fiber
End is located in the shell and is fixedly connected with the shell, and the other end of the detection fiber is pierced by described outer from the opening
Shell, the opening are equipped with regulating device, and the regulating device includes fixed ring, adjusting knob and push-and-pull strut, the fixed ring
One end suit on the housing, and be fixedly connected with the shell, one end of the push-and-pull strut and opening sliding
Connection, the adjusting knob are sleeved in the fixed ring, and the adjusting knob is threadedly coupled with the push-and-pull strut, described to push away
Draw strut be equipped with control mouth, the detection fiber pass through the control mouth, the detection fiber it is corresponding with the control mouth go out
Equipped with position limiting convex ring.
2. a kind of fibre optical sensor being embedded in precast construction in advance according to claim 1, it is characterised in that: the fixation
Ring includes the first stop collar and the second stop collar, and first stop collar is connected with second stop collar by fixed strip.
3. a kind of fibre optical sensor being embedded in precast construction in advance according to claim 2, it is characterised in that: described first
Stop collar is fixedly connected with the shell, and the interior diameter of second stop collar is less than the overall diameter of the adjusting knob.
4. a kind of fibre optical sensor being embedded in precast construction in advance according to claim 3, it is characterised in that: the push-and-pull
One end of strut and the cage connection is equipped with draw runner, and the draw runner is arranged along the push-and-pull strut lengths direction.
5. a kind of fibre optical sensor being embedded in precast construction in advance according to claim 4, it is characterised in that: the shell
Equipped with sliding slot, the sliding slot is equipped with the draw runner.
6. a kind of fibre optical sensor being embedded in precast construction in advance according to claim 5, it is characterised in that: the adjusting
Knob is equipped with internal screw thread, and the push-and-pull strut is equipped with the external screw thread with the screw-internal thread fit.
7. a kind of fibre optical sensor being embedded in precast construction in advance according to claim 6, it is characterised in that: the outer spiral shell
The described push-and-pull one end of strut far from the shell is arranged in line.
8. a kind of fibre optical sensor being embedded in precast construction in advance according to claim 7, it is characterised in that: the adjusting
The outer surface of knob is equipped with raised line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910147920.9A CN110044392A (en) | 2019-02-28 | 2019-02-28 | A kind of pre- fibre optical sensor being embedded in precast construction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910147920.9A CN110044392A (en) | 2019-02-28 | 2019-02-28 | A kind of pre- fibre optical sensor being embedded in precast construction |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110044392A true CN110044392A (en) | 2019-07-23 |
Family
ID=67274292
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910147920.9A Pending CN110044392A (en) | 2019-02-28 | 2019-02-28 | A kind of pre- fibre optical sensor being embedded in precast construction |
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| Country | Link |
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| CN (1) | CN110044392A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2983018B1 (en) * | 1998-09-30 | 1999-11-29 | エヌ・ティ・ティ・アドバンステクノロジ株式会社 | Optical fiber sensor |
| JP2007212210A (en) * | 2006-02-08 | 2007-08-23 | Tobishima Corp | Displacement detection device using fbg optical fiber sensor |
| CN202735541U (en) * | 2012-04-27 | 2013-02-13 | 周鹏鹏 | Quick optical fiber connector |
| CN104655320A (en) * | 2014-11-25 | 2015-05-27 | 中国人民解放军第二炮兵工程大学 | Tunable OFGB (optical fiber Bragg grating) low temperature sensor |
| CN205808434U (en) * | 2016-07-04 | 2016-12-14 | 深圳市博亿精科科技有限公司 | A kind of Fibre Optical Sensor with protected set |
| CN209559228U (en) * | 2019-02-28 | 2019-10-29 | 南京智慧基础设施技术研究院有限公司 | A kind of pre- fibre optical sensor being embedded in precast construction |
-
2019
- 2019-02-28 CN CN201910147920.9A patent/CN110044392A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2983018B1 (en) * | 1998-09-30 | 1999-11-29 | エヌ・ティ・ティ・アドバンステクノロジ株式会社 | Optical fiber sensor |
| JP2007212210A (en) * | 2006-02-08 | 2007-08-23 | Tobishima Corp | Displacement detection device using fbg optical fiber sensor |
| CN202735541U (en) * | 2012-04-27 | 2013-02-13 | 周鹏鹏 | Quick optical fiber connector |
| CN104655320A (en) * | 2014-11-25 | 2015-05-27 | 中国人民解放军第二炮兵工程大学 | Tunable OFGB (optical fiber Bragg grating) low temperature sensor |
| CN205808434U (en) * | 2016-07-04 | 2016-12-14 | 深圳市博亿精科科技有限公司 | A kind of Fibre Optical Sensor with protected set |
| CN209559228U (en) * | 2019-02-28 | 2019-10-29 | 南京智慧基础设施技术研究院有限公司 | A kind of pre- fibre optical sensor being embedded in precast construction |
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