CN203337108U - Micro fiber grating sensor with great measuring strain scope - Google Patents
Micro fiber grating sensor with great measuring strain scope Download PDFInfo
- Publication number
- CN203337108U CN203337108U CN2013203699432U CN201320369943U CN203337108U CN 203337108 U CN203337108 U CN 203337108U CN 2013203699432 U CN2013203699432 U CN 2013203699432U CN 201320369943 U CN201320369943 U CN 201320369943U CN 203337108 U CN203337108 U CN 203337108U
- Authority
- CN
- China
- Prior art keywords
- fiber grating
- metal foil
- foil substrate
- grating sensor
- metal substrate
- 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.)
- Expired - Lifetime
Links
Images
Landscapes
- Length Measuring Devices By Optical Means (AREA)
Abstract
The utility model discloses a micro fiber grating sensor with a great measuring strain scope. The micro fiber grating sensor comprises a rectangular thin metal substrate and a fiber grating, wherein the rectangular thin metal substrate is provided with a strip slot, a tail fiber extends out of the rectangular thin metal substrate, length of the rectangular thin metal substrate is 18-22mm, width of the rectangular thin metal substrate is 3.5-4.5mm, height of the rectangular thin metal substrate is 0.23-0.27mm, length of the fiber grating is 4.5-5.5mm. The rectangular thin metal substrate and the fiber grating have small dimensions, so mounting intensity is guaranteed, and the micro fiber grating sensor has miniaturization property; the rectangular thin metal substrate has the great measuring strain scope. The micro fiber grating sensor can be directly bonded on a surface of an object to be measured through an adhesive, is convenient to mount and is not damaged during mounting.
Description
Technical field
The utility model relates to the fiber-optic grating sensor field, specifically the large range of strain fiber-optic grating sensor of a kind of miniaturization.
Background technology
Strain transducer based on the fiber grating development, there is highly sensitive, the advantage such as volume is little, corrosion-resistant, anti-electromagnetic-radiation, overcome that traditional electrical class sensor accuracy is low, signal transmission distance is short, be subject to electromagnetic interference and the shortcoming such as long-time stability are poor, can meet the measurement needs under the rugged surroundings such as Aero-Space, civil engineering work and petroleum industry.And based on adopting the Wavelength-encoding technology, solved the impact of system loss and light source power fluctuation, be applicable to long term monitoring.In addition, but also have the characteristics of wavelength-division multiplex, a plurality of fiber gratings are serially connected, and form quasi-distributed sensor-based system, therefore only need to adopt an optical cable, can realize the quasi-distributed measurement of a plurality of sensors.
When fiber grating is applied to strain measurement, for guaranteeing the stability of each performance index of sensor, generally need to carry out packaging protection to fiber grating.At present, the measurement range of fiber Bragg grating strain sensor is smaller, generally in ± 1500 μ ε left and right, and size sensor is larger, length is generally in the 30mm left and right, can not meet the measurement requirement of the large strain in particular job place (± 4000 μ ε), also limited again the closeness that the distributed sensor measurement is counted during than Datong District because of volume, thereby make test result produce larger error, in addition, the fiber-optic grating sensor of test strain generally all adopts the fixing mode of screw sensor to be fixed on to the surface of object under test, be not easy to like this use, and special test site forbids destroying the determinand surface for some, this restriction to a certain degree that made the application of fiber Bragg grating strain sensor be subject to.
The utility model content
The technical problems to be solved in the utility model is to provide the large range of strain fiber-optic grating sensor of a kind of miniaturization, have simple in structure, easy to make, volume is small and exquisite and the monitor strain scope is large, the degree of stability advantages of higher.
The technical solution of the utility model is:
The large range of strain fiber-optic grating sensor of a kind of miniaturization, include rectangle metal foil substrate and fiber grating, be provided with bar-shaped trough on described rectangle metal foil substrate, described fiber grating is fixed in bar-shaped trough, and tail optical fiber reaches outside rectangle metal foil substrate; The length of described rectangle metal foil substrate is 18-22mm, and width is 3.5-4.5mm, is highly 0.23-0.27mm; The length of described fiber grating is 4.5-5.5mm.
Described rectangle metal foil substrate is selected the thin substrate of superhard aviation aluminium.
The two ends of described rectangle metal foil substrate are provided with breach, and described two breach lay respectively at the two ends of bar-shaped trough.
Described bar-shaped trough is positioned at the centre of rectangle metal foil substrate, and its axis overlaps with the axis of rectangle metal foil substrate.
Advantage of the present utility model:
The size of rectangle metal foil substrate of the present utility model and fiber grating is little, has guaranteed the closeness of installing, and has the characteristics of miniaturization; Rectangle metal foil substrate of the present utility model has the characteristics of large strain; The utility model can directly be adhered to the surface of object under test by tackifier, easy for installation, and can not damage sensor itself in installing.
The accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Embodiment
The large range of strain fiber-optic grating sensor of a kind of miniaturization, include rectangle metal foil substrate 1 and fiber grating 2, the centre of rectangle metal foil substrate 1 is provided with bar-shaped trough 3, the axis of bar-shaped trough 3 overlaps with the axis of rectangle metal foil substrate 1, the two ends of rectangle metal foil substrate 1 are provided with breach 4, and two breach 4 lay respectively at the two ends of bar-shaped trough 3, fiber grating 2 is fixed in bar-shaped trough 3, and tail optical fiber 5 reaches outside rectangle metal foil substrate 1; Wherein, rectangle metal foil substrate 1 is selected the thin substrate of superhard aviation aluminium, and its length is 18-22mm, and width is 3.5-4.5mm, is highly 0.23-0.27mm; The length of fiber grating 2 is 4.5-5.5mm.
Claims (4)
1. the large range of strain fiber-optic grating sensor of miniaturization, it is characterized in that: include rectangle metal foil substrate and fiber grating, be provided with bar-shaped trough on described rectangle metal foil substrate, described fiber grating is fixed in bar-shaped trough, and tail optical fiber reaches outside rectangle metal foil substrate; The length of described rectangle metal foil substrate is 18-22mm, and width is 3.5-4.5mm, is highly 0.23-0.27mm; The length of described fiber grating is 4.5-5.5mm.
2. the large range of strain fiber-optic grating sensor of a kind of miniaturization according to claim 1, it is characterized in that: described rectangle metal foil substrate is selected the thin substrate of superhard aviation aluminium.
3. the large range of strain fiber-optic grating sensor of a kind of miniaturization according to claim 1, it is characterized in that: the two ends of described rectangle metal foil substrate are provided with breach, and described two breach lay respectively at the two ends of bar-shaped trough.
4. the large range of strain fiber-optic grating sensor of a kind of miniaturization according to claim 1, it is characterized in that: described bar-shaped trough is positioned at the centre of rectangle metal foil substrate, and its axis overlaps with the axis of rectangle metal foil substrate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203699432U CN203337108U (en) | 2013-06-25 | 2013-06-25 | Micro fiber grating sensor with great measuring strain scope |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203699432U CN203337108U (en) | 2013-06-25 | 2013-06-25 | Micro fiber grating sensor with great measuring strain scope |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203337108U true CN203337108U (en) | 2013-12-11 |
Family
ID=49705778
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013203699432U Expired - Lifetime CN203337108U (en) | 2013-06-25 | 2013-06-25 | Micro fiber grating sensor with great measuring strain scope |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203337108U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104330032A (en) * | 2014-07-09 | 2015-02-04 | 国家电网公司 | Fiber displacement sensor, fiber displacement detection device and fiber for sensor |
| CN106289091A (en) * | 2016-10-21 | 2017-01-04 | 广东核电合营有限公司 | A kind of lightweight fiber grating wide range strain gauge being applicable to microcrack structure |
-
2013
- 2013-06-25 CN CN2013203699432U patent/CN203337108U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104330032A (en) * | 2014-07-09 | 2015-02-04 | 国家电网公司 | Fiber displacement sensor, fiber displacement detection device and fiber for sensor |
| CN106289091A (en) * | 2016-10-21 | 2017-01-04 | 广东核电合营有限公司 | A kind of lightweight fiber grating wide range strain gauge being applicable to microcrack structure |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN1316227C (en) | Optical fiber grating displacement sensor | |
| CN203364772U (en) | Patch-type optical fiber strainmeter with temperature compensation | |
| CN105190365A (en) | Proximity sensor | |
| CN101995485B (en) | Target fiber grating rheometer | |
| CN102620869B (en) | Towing force sensor for fiber bragg grating | |
| CN102878943B (en) | The multiple sensing system of fiber strain integration calibrating installation of large scale and method | |
| CN104316106A (en) | Optical fiber sensor based on Mach-Zehnder interference and fiber bragg grating | |
| CN102853778A (en) | Fiber grating strain sensor | |
| CN202511764U (en) | High-sensitivity fiber grating strain sensor | |
| CN203337108U (en) | Micro fiber grating sensor with great measuring strain scope | |
| CN201653680U (en) | Fiber bragg grating five-component force balance | |
| CN103675340A (en) | Optical fiber accelerometer in differential double-grating structure | |
| CN203465033U (en) | Brillouin distributed type optical-fiber temperature sensor based on wide-spectrum light source | |
| CN203177817U (en) | Temperature compensating fiber-containing angle sensor for measuring level angle of tower | |
| CN104330046A (en) | Fiber bragg grating torque sensor structure applicable to underwater environment | |
| CN105387968A (en) | Optical fiber cladding surface Bragg grating temperature self-compensating pressure sensor | |
| CN103245304B (en) | For the band temperature-compensated fiber angular transducer that shaft tower level angle is measured | |
| CN203224440U (en) | Humidity sensor based on multimode interference MSM (multilayer switch module) structure | |
| CN102620861B (en) | Scaling temperature measuring device in distributed optical fiber temperature sensor | |
| CN202547602U (en) | Explosion-proof grating displacement transducer | |
| CN103528733B (en) | Spindle-shaped sensor for monitoring load and temperature of flexible rope in real time | |
| CN102221333A (en) | Temperature-insensitive fiber bragg grating (FBG) displacement sensor with double-isosceles-triangle simply-supported-beam structure | |
| ITTO20150046U1 (en) | DEVICE FOR DETECTION OF DEFORMATIONS AND TRANSMISSION OF THE DETECTED DATA | |
| CN201903554U (en) | FBG (fiber Bragg grating) accelerometer using multimode interference SMS (single-mode, multimode and single-mode) structure as edge filter | |
| CN100344949C (en) | Temperature transducer for optical fiber grating steel tube packaging |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20131211 |
|
| CX01 | Expiry of patent term |