CN102226699A - All-fiber inertial sensing device - Google Patents
All-fiber inertial sensing device Download PDFInfo
- Publication number
- CN102226699A CN102226699A CN 201110089654 CN201110089654A CN102226699A CN 102226699 A CN102226699 A CN 102226699A CN 201110089654 CN201110089654 CN 201110089654 CN 201110089654 A CN201110089654 A CN 201110089654A CN 102226699 A CN102226699 A CN 102226699A
- Authority
- CN
- China
- Prior art keywords
- fiber
- detector
- sensing device
- optical waveguide
- inertial sensing
- 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.)
- Granted
Links
- 239000000835 fiber Substances 0.000 title claims abstract description 24
- 230000003287 optical effect Effects 0.000 claims abstract description 36
- 239000013307 optical fiber Substances 0.000 claims abstract description 25
- 230000007246 mechanism Effects 0.000 claims description 21
- 230000008878 coupling Effects 0.000 claims description 20
- 238000010168 coupling process Methods 0.000 claims description 20
- 238000005859 coupling reaction Methods 0.000 claims description 20
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 3
- 230000010287 polarization Effects 0.000 claims description 3
- 239000010453 quartz Substances 0.000 claims description 3
- 239000004065 semiconductor Substances 0.000 claims description 3
- 229910052710 silicon Inorganic materials 0.000 claims description 3
- 239000010703 silicon Substances 0.000 claims description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 3
- 230000002269 spontaneous effect Effects 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 230000003247 decreasing effect Effects 0.000 abstract 1
- 238000005259 measurement Methods 0.000 description 8
- 238000005516 engineering process Methods 0.000 description 4
- 230000010354 integration Effects 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Images
Landscapes
- Gyroscopes (AREA)
Abstract
The invention discloses an all-fiber inertial sensing device, which comprises a light source, a first detector, a coupler, a gyro module and an accelerometer module, wherein the gyro module comprises a first integrated optical waveguide and a fiber loop, the accelerometer module comprises a second integrated optical waveguide, a fiber flexible disc, a combiner and a second detector, the light source and the first detector are respectively connected with one end of the coupler, the other end of the coupler is respectively connected with the gyro module and the accelerometer module, the first integrated optical waveguide is connected with the fiber loop, and the second integrated optical waveguide, the fiber flexible disc, the combiner and the second detector are connected sequentially. According to the invention, an optical fiber gyro and an optical fiber accelerometer are integrated into a single device and the gyro and the accelerometer measuring modules share a light source; with such an integrated design, the sensing device has a decreased volume, an elevated system integrated level and reduced manufacturing cost.
Description
Technical field
The present invention relates to the inertia sensing technology, relate in particular to a kind of full fiber-optic inertial sensing device.
Background technology
The basis of gyro and accelerometer inertial technology and core, its technical merit and product category are directly restricting the development of inertial technology association area.Optical fibre gyro and optical accelerometer all are based on the full optical sensor of principle of interference, because of its all solid state characteristics, compare with the traditional mechanical gyro, more can withstand shocks, and are operated under the rugged surroundings.In actual applications, system will use above two kinds of measurement mechanisms usually simultaneously, and existing inertial measurement system all adopts discrete gyro and accelerometer to combine, and certainly will occupy too much space like this, is unfavorable for the demand of system integration, miniaturization.Apparatus of the present invention are integrated together gyroscope and accelerometer by integrated design, two shared light sources of module.
In gyro, the light that light source sends is by coupling mechanism, and be divided into two-way: wherein one the tunnel is that gyro is used, realizes the measurement to angular velocity; Lead up in addition behind the coupling mechanism, be wasted.The characteristics of apparatus of the present invention are to utilize this road light that is wasted in the gyro, as the light source of optical accelerometer.
We are linked on the light path of wasting in the gyro at degree of will speed up meter module, and design can be saved a light source according to this, and can realize the measurement of angular velocity and acceleration simultaneously.In addition, by appropriate design, the integrated level of device improves, and volume reduces.
Summary of the invention
The objective of the invention is to eliminate the drawback that machinery combination gyroscope and accelerometer carry out inertia measurement, a kind of full fiber-optic inertial sensing device is provided.
Full fiber-optic inertial sensing device comprises light source, first detector, coupling mechanism, gyro module and accelerometer module, wherein the gyro module comprises first integrated optical waveguide and fiber optic loop, and the accelerometer module comprises second integrated optical waveguide, optical fiber flexible disk, bundling device and second detector.Light source, first detector link to each other with coupling mechanism one end respectively, the coupling mechanism other end links to each other with the accelerometer module with the gyro module respectively, first integrated optical waveguide links to each other with fiber optic loop, and second integrated optical waveguide, optical fiber flexible disk, bundling device, second detector link to each other in turn; The light that light source sends is divided into two-way: wherein one the tunnel enter the gyro module, be back to coupling mechanism then, finally received by first detector by coupling mechanism; Another road enters the accelerometer module and constitutes optical accelerometer.
Described light source is superradiance laser diode, laser diode or amplified spontaneous emission light source.Described coupling mechanism is polarization-maintaining fiber coupler or single-mode optical-fibre coupler.Described first integrated optical waveguide, second integrated optical waveguide are the multi-functional integrated optical waveguide modulator.Described fiber optic loop is polarization maintaining optical fibre coil or single-mode fiber coil.Described first detector, second detector are semiconductor PIN optical diode.Described optical fiber flexible disk is quartz disk or silicon microstructure dish.Described bundling device is optical-fiber bundling device or waveguide bundling device.
The present invention is integrated into optical fibre gyro and fibre optic accelerometer on the device, two shared light sources of measurement module, and device volume reduces, and level of integrated system improves, and cost of manufacture also decreases.The system of gyro and accelerometer is merged design, form integrated, integrated optics inertial sensor system, realize that the optics inertia measurement is by the leap of discrete device to the system integration.
Description of drawings
Fig. 1 is the optical fibre gyro structural representation.
Fig. 2 is the optical accelerometer structural representation
Fig. 3 is full fiber-optic inertial sensing device structural representation.
Embodiment
Below in conjunction with accompanying drawing the present invention is illustrated.
As shown in Figure 3, full fiber-optic inertial sensing device comprises light source, first detector, coupling mechanism, gyro module and accelerometer module, wherein the gyro module comprises first integrated optical waveguide and fiber optic loop, and the accelerometer module comprises second integrated optical waveguide, optical fiber flexible disk, bundling device and second detector; Light source, first detector link to each other with coupling mechanism one end respectively, the coupling mechanism other end links to each other with the accelerometer module with the gyro module respectively, first integrated optical waveguide links to each other with fiber optic loop, and second integrated optical waveguide, optical fiber flexible disk, bundling device, second detector link to each other in turn.
Described light source is superradiance laser diode, laser diode or amplified spontaneous emission light source.Described coupling mechanism is polarization-maintaining fiber coupler or single-mode optical-fibre coupler.Described first integrated optical waveguide, second integrated optical waveguide are the multi-functional integrated optical waveguide modulator.Described fiber optic loop is polarization maintaining optical fibre coil or single-mode fiber coil.Described first detector, second detector are semiconductor PIN optical diode.Described optical fiber flexible disk is quartz disk or silicon microstructure dish.Described bundling device is optical-fiber bundling device or waveguide bundling device.
The course of work of the present invention is as follows:
The light that light source sends passes through coupling mechanism, be divided into two-way: wherein one the tunnel enter the gyro module, integrated optical waveguide is divided into light to two bundles, according to Sa glug effect, from integrated optical waveguide, the fiber optic loop of closure in opposite direction propagation two-beam ripple, detouring a week turns back to starting point, if rotate along certain direction in the closed light path relative inertness of fruit space, then the phase place of two-beam ripple changes.The two-beam ripple is back to coupling mechanism after producing and differing, and finally is detected device and receives, and by the processing to detector signal, can realize the measurement to angular velocity; Another road enters accelerometer module primordial in optical fiber flexible disk Mach-Zehnder fibre optic accelerometer.
Claims (8)
1. full fiber-optic inertial sensing device, it is characterized in that comprising light source, first detector, coupling mechanism, gyro module and accelerometer module, wherein the gyro module comprises first integrated optical waveguide and fiber optic loop, and the accelerometer module comprises second integrated optical waveguide, optical fiber flexible disk, bundling device and second detector; Light source, first detector link to each other with coupling mechanism one end respectively, the coupling mechanism other end links to each other with the accelerometer module with the gyro module respectively, first integrated optical waveguide links to each other with fiber optic loop, second integrated optical waveguide, optical fiber flexible disk, bundling device, second detector link to each other in turn, the light that light source sends is divided into two-way: wherein one the tunnel enter the gyro module, be back to coupling mechanism then by coupling mechanism, finally received, constitute optical fibre gyro by first detector; Another road light enters the accelerometer module and constitutes optical accelerometer.
2. a kind of full fiber-optic inertial sensing device according to claim 1 is characterized in that described light source is superradiance laser diode, laser diode or amplified spontaneous emission light source.
3. a kind of full fiber-optic inertial sensing device according to claim 1 is characterized in that described coupling mechanism is polarization-maintaining fiber coupler or single-mode optical-fibre coupler.
4. a kind of full fiber-optic inertial sensing device according to claim 1 is characterized in that described first integrated optical waveguide, second integrated optical waveguide are the multi-functional integrated optical waveguide modulator.
5. a kind of full fiber-optic inertial sensing device according to claim 1 is characterized in that described fiber optic loop is polarization maintaining optical fibre coil or single-mode fiber coil.
6. a kind of full fiber-optic inertial sensing device according to claim 1 is characterized in that described first detector, second detector are semiconductor PIN optical diode.
7. a kind of full fiber-optic inertial sensing device according to claim 1 is characterized in that described optical fiber flexible disk is quartz disk or silicon microstructure dish.
8. a kind of full fiber-optic inertial sensing device according to claim 1 is characterized in that described bundling device is optical-fiber bundling device or waveguide bundling device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110089654A CN102226699B (en) | 2011-04-11 | 2011-04-11 | All-fiber inertial sensing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110089654A CN102226699B (en) | 2011-04-11 | 2011-04-11 | All-fiber inertial sensing device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102226699A true CN102226699A (en) | 2011-10-26 |
| CN102226699B CN102226699B (en) | 2012-09-26 |
Family
ID=44807686
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110089654A Expired - Fee Related CN102226699B (en) | 2011-04-11 | 2011-04-11 | All-fiber inertial sensing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102226699B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102621347A (en) * | 2012-03-21 | 2012-08-01 | 浙江大学 | Reflective optical fiber accelerometer compatible with optical fiber gyroscope |
| CN102759634A (en) * | 2012-06-29 | 2012-10-31 | 浙江大学 | Closed loop control interference type optical fiber accelerometer |
| CN103398709A (en) * | 2013-08-20 | 2013-11-20 | 重庆华渝电气仪表总厂 | Full polarization-maintaining light path of optical fiber gyroscope |
| CN103743392A (en) * | 2014-01-06 | 2014-04-23 | 北京大学 | Gyroscope with single coupling device and dual-polarization optical fiber |
| CN103941040A (en) * | 2014-04-23 | 2014-07-23 | 浙江大学 | Device and method for detecting acceleration on basis of back scattered light of nano particle detection |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101290227A (en) * | 2008-06-17 | 2008-10-22 | 北京航空航天大学 | Three axis optical fibre gyroscope inertia measurement unit integral structure |
| CN101482412A (en) * | 2009-02-24 | 2009-07-15 | 北京航天时代光电科技有限公司 | Closed-loop optic fiber gyroscope light path structure with low polarization error |
| CN101566475A (en) * | 2009-05-22 | 2009-10-28 | 东南大学 | Biaxial optical gyroscope |
| CN101782595A (en) * | 2010-02-02 | 2010-07-21 | 浙江大学 | Multiplexing fiber-optic inertial sensing unit capable of simultaneously measuring acceleration and palstance |
-
2011
- 2011-04-11 CN CN201110089654A patent/CN102226699B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101290227A (en) * | 2008-06-17 | 2008-10-22 | 北京航空航天大学 | Three axis optical fibre gyroscope inertia measurement unit integral structure |
| CN101482412A (en) * | 2009-02-24 | 2009-07-15 | 北京航天时代光电科技有限公司 | Closed-loop optic fiber gyroscope light path structure with low polarization error |
| CN101566475A (en) * | 2009-05-22 | 2009-10-28 | 东南大学 | Biaxial optical gyroscope |
| CN101782595A (en) * | 2010-02-02 | 2010-07-21 | 浙江大学 | Multiplexing fiber-optic inertial sensing unit capable of simultaneously measuring acceleration and palstance |
Non-Patent Citations (2)
| Title |
|---|
| 《北京航空航天大学学报》 20061130 金靖等 卫星用光纤陀螺三轴组合的关键技术 第32卷, 第11期 * |
| 《计算机测量与控制》 20110325 吉世涛 三轴光纤陀螺样机研制及其关键技术 第19卷, 第3期 * |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102621347A (en) * | 2012-03-21 | 2012-08-01 | 浙江大学 | Reflective optical fiber accelerometer compatible with optical fiber gyroscope |
| CN102621347B (en) * | 2012-03-21 | 2013-11-13 | 浙江大学 | Reflective optical fiber accelerometer compatible with optical fiber gyroscope |
| CN102759634A (en) * | 2012-06-29 | 2012-10-31 | 浙江大学 | Closed loop control interference type optical fiber accelerometer |
| CN102759634B (en) * | 2012-06-29 | 2013-11-13 | 浙江大学 | Closed loop control interference type optical fiber accelerometer |
| CN103398709A (en) * | 2013-08-20 | 2013-11-20 | 重庆华渝电气仪表总厂 | Full polarization-maintaining light path of optical fiber gyroscope |
| CN103743392A (en) * | 2014-01-06 | 2014-04-23 | 北京大学 | Gyroscope with single coupling device and dual-polarization optical fiber |
| CN103941040A (en) * | 2014-04-23 | 2014-07-23 | 浙江大学 | Device and method for detecting acceleration on basis of back scattered light of nano particle detection |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102226699B (en) | 2012-09-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101852613B (en) | Light transceiving integrated device applied to fiber sensing | |
| CN103697880B (en) | A kind of optical fibre gyro of low random walk coefficient | |
| CN101694386B (en) | High-sensitivity optical fiber gyroscope | |
| CN104075704B (en) | A kind of digital closed-loop optic fiber gyroscope instrument with dual interferometer system | |
| CN101957477B (en) | Polarization-preserving type fiber integrated Michelson interferometer | |
| CN102226699B (en) | All-fiber inertial sensing device | |
| CN101833016B (en) | Micro-accelerometer sensor based on embedded core type twin-core polarization maintaining fiber | |
| EP2251642A3 (en) | Compact resonator fiber optic gyroscope | |
| US8823946B1 (en) | Multi-axis fiber optic gyroscope with single light source | |
| CN102401670A (en) | Fiber optic interferometric system for reducing influence of fiber birefringence | |
| CN102914299A (en) | Fiber-optic gyroscope based on single-mode single polarized photon crystal optical fiber | |
| CN103308082A (en) | Sensing structure of single ring embedded resonant cavity coupling M-Z interferometer | |
| CN102207387A (en) | Triaxial integration all-optical fiber inertia sensing device | |
| CN104180798A (en) | Multi-optical fiber ring tandem uniaxial optical fiber gyroscope and multi-optical fiber ring tandem method | |
| CN102305628A (en) | Triaxial integrated all-optical-fiber inertial sensing system | |
| CN202994163U (en) | Fiber-optic gyroscope integrated module and fiber-optic gyroscope system comprising same | |
| CN103018836A (en) | Optical fiber depolarizer with single-mode fiber serving as delay line | |
| CN103234590A (en) | Underground optical fiber flow sensor in oil field | |
| CN108254101A (en) | A kind of polarization interference formula passive fiber temperature sensor | |
| CN1328585C (en) | Space optical path interference type low-light apparatus electric top | |
| JP7216951B2 (en) | Interferometric fiber optic gyro and sensing coil mechanism | |
| CN105547276A (en) | Air-gap groove waveguide annular resonant cavity integrated optical gyroscope | |
| CN104567851B (en) | Use single fibre optic gyroscope for polarizing output polarization-maintaining circulator | |
| CN101694387A (en) | Multifunctional integrated waveguide chip for optical fiber gyroscope | |
| ES2545868T3 (en) | Procedure and device for the amplification of guided optical signal waves in a multi-core optical fiber |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120926 Termination date: 20160411 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |