CN204902832U - Optic fibre dipmeter - Google Patents
Optic fibre dipmeter Download PDFInfo
- Publication number
- CN204902832U CN204902832U CN201520663776.1U CN201520663776U CN204902832U CN 204902832 U CN204902832 U CN 204902832U CN 201520663776 U CN201520663776 U CN 201520663776U CN 204902832 U CN204902832 U CN 204902832U
- Authority
- CN
- China
- Prior art keywords
- knife
- edge
- brace summer
- optical fiber
- fixed
- 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.)
- Withdrawn - After Issue
Links
Abstract
The utility model discloses an optic fibre dipmeter, include: a sensor housing (10) for protecting inner structure experiences the crustal inclination, install in the sensor housing (10) inside and with the sensor housing (10) fixed connection's supporting beam (20), lay and to prop up supporting beam (20) slightly the wobbling edge of a knife (30) relatively on supporting beam (20), be fixed in the edge of a knife (30) and be used for improving the transducer sensitivity and stablize the edge of a knife (30) weight 31 of state on supporting beam (20), and be fixed in the edge of a knife (30) upper end and prop up fiber grating (40) between supporting beam (20). Utilize the utility model discloses, electromagnetic interference, the thunderbolt of having solved current dipmeter, sensitive hanging down, the problem bulky, that the installation expects much.
Description
Technical field
The utility model relates to earthquake precursor observation technical field, particularly relates to a kind of slant optical fiber instrument, is applicable to the measurement that the earth tilts.
Background technology
Can deform at regional stress field action lower crust, ground tilt measurement is a kind of important means of Research on Crustal distortion and stress field change.Borehole inclinometer can by earthquake and volcanicity at that time and the crustal deformation of front and back, minute even to record continuously close to a sampling time of surveying shake.Therefore play an important role in earthquake forecast and geophysical research.
Existing inclinator mainly adopts the electric sensor such as capacitive transducer, MEMS sensor, works in the wild and all has identical shortcoming, the first, can not anti-lightning, and electromagnetism interference is poor; The second, drift problem is serious.
Fibre Optical Sensor, compared with corresponding conventional sensors, has obvious advantage, especially has electromagnetism interference, is not afraid of thunderbolt, feature without drift in sensitivity, dynamic range, reliability etc.But current optical fiber inclination sensor adopts the mode by optical fiber and the direct consolidation of weight, and sensitivity is low, impact resistance is poor, volume is large, structure is too complicated, high to installation requirement.
Therefore, the utility model proposes a kind of slant optical fiber instrument, for the ground tilt detection in field of seismic exploration, emphasis solves electromagnetic interference (EMI), the thunderbolt of existing inclinator, sensitive low, the problem that volume is large, installation requirement is high.
Utility model content
(1) technical matters that will solve
In view of this, fundamental purpose of the present utility model is to provide a kind of slant optical fiber instrument, the problem that to solve electromagnetic interference (EMI), the thunderbolt of existing inclinator, sensitive low, volume is large, installation requirement is high.
(2) technical scheme
For achieving the above object, the utility model provides a kind of slant optical fiber instrument, comprising: the sensor outer housing 10 also tilted to impression for the protection of inner structure; Be installed on sensor outer housing 10 inside and the brace summer 20 be fixedly connected with sensor outer housing 10; Being placed on brace summer 20 can the edge of a knife 30 that slightly swings of relative support beam 20; Be fixed on the edge of a knife 30 and weight 31 in order to improve transducer sensitivity and the stable edge of a knife 30 state on brace summer 20; And the fiber grating 40 be fixed between the edge of a knife 30 upper end and brace summer 20.
In such scheme, described brace summer 20 lays the edge of a knife 30 and is fixed with fiber grating 40, the other end of fiber grating 40 is fixed on the upper end of the edge of a knife 30.
In such scheme, the lower end of the described edge of a knife 30 is the sharp linear pattern edge of a knife, and this linear pattern edge of a knife contacts with brace summer 20 upper surface.
In such scheme, described weight 31 is fixed on the edge of a knife 30, makes the edge of a knife 30 can small size swing undamped relative to brace summer 20, and ground tilt signals is passed to fiber grating 40.
In such scheme, the scope of the described edge of a knife 30 small size swing undamped relative to brace summer 20 is no more than 1 degree.
In such scheme, described fiber grating 40 adopts bonding method to be fixed between the edge of a knife 30 upper end and brace summer 20, to experience the ground tilt signals that the edge of a knife 30 transmission is come.
In such scheme, the second fiber grating 41 is also installed between the described edge of a knife 30 upper end and described brace summer 20, to carry out temperature compensation and to improve transducer sensitivity.
(3) beneficial effect
As can be seen from technique scheme, the utility model has following beneficial effect:
1, this slant optical fiber instrument that provides of the utility model, inner without electronic devices and components, therefore there is not electromagnetic interference (EMI) and problem of lightning.
2, this slant optical fiber instrument that provides of the utility model, adopts edge of a knife impression ground tilt signals, and by weight enhanced sensitivity, improves responding ability and the sensitivity of sensor.
3, this slant optical fiber instrument that provides of the utility model, adopts the edge of a knife and weight to fix fiber grating, reduces sensor bulk, improve the stability of the edge of a knife, thus add the impact resistance of sensor, reduce the installation difficulty of inclinator.
Accompanying drawing explanation
The schematic diagram of the slant optical fiber instrument that Fig. 1 provides for the utility model;
The sectional view of the slant optical fiber instrument that Fig. 2 provides for the utility model;
The three-dimensional structure schematic diagram of the slant optical fiber instrument that Fig. 3 provides for the utility model.
Embodiment
For making the purpose of this utility model, technical scheme and advantage clearly understand, below in conjunction with specific embodiment, and with reference to accompanying drawing, the utility model is further described.
Please refer to Fig. 1 ~ Fig. 3, Fig. 1 is the schematic diagram of slant optical fiber instrument provided by the invention, and Fig. 2 is the sectional view of slant optical fiber instrument provided by the invention, the three-dimensional structure schematic diagram of the slant optical fiber instrument that Fig. 3 provides for the utility model.This slant optical fiber instrument comprises sensor outer housing 10, brace summer 20, the edge of a knife 30, weight 31 and fiber grating 40, wherein:
Sensor outer housing 10, also tilt to impression for the protection of inner structure, its material adopted can be stainless steel or engineering plastics etc.
It is inner and fixing with sensor outer housing 10 that brace summer 20 is installed on sensor outer housing 10, for laying the edge of a knife 30 and fixed fiber grating 40; The material that brace summer 20 adopts can be stainless steel or invar alloy, and brace summer 20 and sensor outer housing 10 can adopt integral forming process to make.
The edge of a knife 30 is placed on brace summer 20, can slightly swing by relative support beam 20, for ground tilt signals is passed to fiber grating 40; The lower end of the edge of a knife 30 is the sharp linear pattern edge of a knife, and this linear pattern edge of a knife contacts with brace summer 20 upper surface.
Weight 31 is fixed on the edge of a knife 30, and for improving transducer sensitivity stablize the state of the edge of a knife 30 on brace summer 20, make the edge of a knife 30 can relative to brace summer 20 almost undamped small size swing, its hunting range be generally no more than 1 degree.
Fiber grating 40 is fixed between the edge of a knife 30 upper end and brace summer 20, for experiencing the ground tilt signals that the edge of a knife 30 transmission is come; Fiber grating 40 can be fixed between the edge of a knife 30 upper end and brace summer 20 by bonding method.
Position relationship between brace summer 20, the edge of a knife 30, weight 31 and fiber grating 40 4 parts can refer to shown in Fig. 3, the three-dimensional structure schematic diagram of the slant optical fiber instrument that Fig. 3 provides for the utility model.Fiber grating 40 is fixed between the edge of a knife 30 upper end and brace summer 20, reduces sensor bulk, and weight 31 can improve the stability of the edge of a knife 30, thus adds the impact resistance of sensor, reduces the installation difficulty of inclinator.
In order to improve the sensitivity of sensor further, the utility model is also provided with the second fiber grating 41 further between the edge of a knife 30 upper end and brace summer 20, to carry out temperature compensation and to improve transducer sensitivity.
It should be noted that, the sensitive element of this inclinator is not limited to fiber grating, and namely fiber grating 40 can be replaced by other device and obtain same effect, and other device is as fiber laser, long-period gratings, chirp grating etc.
Above-described specific embodiment; the purpose of this utility model, technical scheme and beneficial effect are further described; be understood that; the foregoing is only specific embodiment of the utility model; be not limited to the utility model; all within spirit of the present utility model and principle, any amendment made, equivalent replacement, improvement etc., all should be included within protection domain of the present utility model.
Claims (7)
1. a slant optical fiber instrument, is characterized in that, comprising:
For the protection of the sensor outer housing (10) that inner structure also tilts to impression;
Be installed on sensor outer housing (10) inside and the brace summer (20) be fixedly connected with sensor outer housing (10);
Being placed on brace summer (20) can the edge of a knife (30) that slightly swings of relative support beam (20);
Be fixed on the edge of a knife (30) and in order to improve transducer sensitivity and the stable edge of a knife (30) weight (31) in the upper state of brace summer (20); And
Be fixed on the fiber grating (40) between the edge of a knife (30) upper end and brace summer (20).
2. slant optical fiber instrument according to claim 1, it is characterized in that, described brace summer (20) laid the edge of a knife (30) and be fixed with fiber grating (40), the other end of fiber grating (40) is fixed on the upper end of the edge of a knife (30).
3. slant optical fiber instrument according to claim 1, is characterized in that, the lower end of the described edge of a knife (30) is the sharp linear pattern edge of a knife, and this linear pattern edge of a knife contacts with brace summer (20) upper surface.
4. slant optical fiber instrument according to claim 1, it is characterized in that, described weight (31) is fixed on the edge of a knife (30), make the edge of a knife (30) relative to the undamped small size swing of brace summer (20), ground tilt signals can be passed to fiber grating (40).
5. the slant optical fiber instrument according to claim 1 or 4, is characterized in that, the described edge of a knife (30) is no more than 1 degree relative to the scope of the undamped small size swing of brace summer (20).
6. slant optical fiber instrument according to claim 1, it is characterized in that, the bonding method that adopts described fiber grating (40) is fixed between the edge of a knife (30) upper end and brace summer (20), to experience the ground tilt signals that the edge of a knife (30) transmission is come.
7. slant optical fiber instrument according to claim 1, it is characterized in that, second fiber grating (41) is also installed between the described edge of a knife (30) upper end and described brace summer (20), to carry out temperature compensation and to improve transducer sensitivity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520663776.1U CN204902832U (en) | 2015-08-28 | 2015-08-28 | Optic fibre dipmeter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520663776.1U CN204902832U (en) | 2015-08-28 | 2015-08-28 | Optic fibre dipmeter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204902832U true CN204902832U (en) | 2015-12-23 |
Family
ID=54925000
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520663776.1U Withdrawn - After Issue CN204902832U (en) | 2015-08-28 | 2015-08-28 | Optic fibre dipmeter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204902832U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105180900A (en) * | 2015-08-28 | 2015-12-23 | 中国科学院半导体研究所 | Fiber clinometer |
| CN109470211A (en) * | 2018-10-18 | 2019-03-15 | 中际物联科技（深圳）有限公司 | A kind of novel optical fiber inclination sensor of stretching structure |
-
2015
- 2015-08-28 CN CN201520663776.1U patent/CN204902832U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105180900A (en) * | 2015-08-28 | 2015-12-23 | 中国科学院半导体研究所 | Fiber clinometer |
| CN109470211A (en) * | 2018-10-18 | 2019-03-15 | 中际物联科技（深圳）有限公司 | A kind of novel optical fiber inclination sensor of stretching structure |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105180900A (en) | Fiber clinometer | |
| Zhu et al. | Investigation of the evolutionary process of a reinforced model slope using a fiber-optic monitoring network | |
| CN105890537B (en) | The technical solution and system of the distributing optical fiber sensing of induced joint deformation monitoring | |
| CN102829728A (en) | Comprehensive monitoring system for side slope and landslip | |
| CN106772678A (en) | A kind of wellhole many reference amounts method for surveying of rock deformation destructive characteristics | |
| CN204902832U (en) | Optic fibre dipmeter | |
| CN102359765B (en) | Component-type optical fiber drilling deformeter | |
| SA519401386B1 (en) | Downhole fiber optic hydrophone | |
| CN202256695U (en) | Borehole inclinometer underground probe | |
| CN102692640A (en) | Optical fiber deep well earthquake sound instrument | |
| Wu et al. | Development of a monitoring and warning system based on optical fiber sensing technology for masonry retaining walls and trees | |
| CN102322814B (en) | Optical fiber drilling strain gauge | |
| CN108195304A (en) | A kind of Coal Face with Greater Mining Height coal wall caving depth assay method | |
| Martel et al. | Mechanics of relative and absolute displacements across normal faults, and implications for uplift and subsidence along the eastern escarpment of the Sierra Nevada, California | |
| CN206339300U (en) | A kind of fiber grating microseismic sensors | |
| CN103439736A (en) | Horizontal pendulum earthquake prediction instrument | |
| Pillet et al. | Interpretation of broadband ocean-bottom seismometer horizontal data seismic background noise | |
| CN102926808A (en) | Underground coal dressing chamber bottom plate online monitoring device and method based on fiber bragg grating sensing | |
| CN208171488U (en) | Four component in-situ stress monitoring devices | |
| CN202974523U (en) | Differential-type optical fiber soil pressure gauge | |
| CN205720706U (en) | A kind of analogue simulation fiber optic seismic laser detector | |
| CN211505913U (en) | Geological disaster detection device | |
| CN204287512U (en) | A kind of sensing probe and accurate uprighting spring portable gravity meter | |
| CN102359766B (en) | Fiber body strain gauge | |
| Cai et al. | Extrinsic Optical Fiber Pressure Sensor Based on FP Cavity. |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20151223 Effective date of abandoning: 20180102 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20151223 Effective date of abandoning: 20180102 |