CN102297691A - Optical fiber structure-based all-solid-state high-speed rotating measurement system - Google Patents
Optical fiber structure-based all-solid-state high-speed rotating measurement system Download PDFInfo
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- CN102297691A CN102297691A CN2011101279850A CN201110127985A CN102297691A CN 102297691 A CN102297691 A CN 102297691A CN 2011101279850 A CN2011101279850 A CN 2011101279850A CN 201110127985 A CN201110127985 A CN 201110127985A CN 102297691 A CN102297691 A CN 102297691A
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Abstract
The invention discloses an optical fiber structure-based all-solid-state high-speed rotating measurement system. The optical fiber structure-based all-solid-state high-speed rotating measurement system is characterized in that three sets of orthogonal optical fiber gyro modules and optical fiber table addition modules share a light source; three axial optical fiber gyro modules share a detector; three axial optical fiber table addition modules share a detector; motion information in three orthogonal directions is extracted through a multiplexing technology; and the optical fiber structure-based all-solid-state high-speed rotating measurement system is controlled unitedly by a central processing unit and thus fusion of the optical fiber gyro modules and the optical fiber table addition modules is realized. The optical fiber structure-based all-solid-state high-speed rotating measurement system realizes that a whole inertial measurement system has all-solid-state, all-fiber, unification and integration characteristics, saves a resource and a cost for a system, reduces power consumption, improves stability and reliability of the system and provides a strong technical support for upgrade of an equipment system.
Description
Technical field
The present invention relates to the inertia measurement field, relate in particular to all solid state high speed rotating measuring system based on optical fiber structure.
Background technology
Development along with equipment technology and weapon platform technology, development highly reliable, the high-performance inertial technology is imperative, a new generation's change system has further lifting on rotational speed, how to measure the big angular velocity under the high speed rotating and can keep less resolution and high sensitivity to become the problem that inertial measurement system faces.
There are movable parts such as high speed rotor in traditional mechanical gyro, this makes it have fearness impact, G and the strong shortcoming of G2 susceptibility, and square being directly proportional of centripetal acceleration that high speed rotating brings and angular velocity of rotation, this integrates the rotational speed that has just limited change system, influences its control accuracy.Optical fibre gyro and optics add the full optical sensor that table is based on principle of interference, and these two gordian techniquies all have all solid state characteristics, are not afraid of impact, make it become the optimum measurement technology of high speed change system.
But, by the end of at present, the domestic unit that carries out the research of high speed rotating inertial measuring unit also is not a lot, great majority research still is in the laboratory model machine stage, and nearly all research all is based on the combination of discrete gyro and Jia Biao, be unfavorable for the integrated and miniaturization of system, in addition, gyro and Jia Biao are installed on three orthogonal directions, each gyro and Jia Biao are complete bodies, and the inertial data on responsive separately three orthogonal directionss has increased the volume and the power consumption of system, also need the integration processing of data in data terminal, limited the development of inertial measurement system and high speed rotating change system.
Summary of the invention
Purpose of the present invention is exactly to solve the predicament that current high speed rotating change system is faced, and proposes a kind of all solid state high speed rotating measuring system based on optical fiber structure.
Comprise that based on all solid state high speed rotating measuring system of optical fiber structure light source, 2 * 3 coupling mechanisms, 1 * 2X axle coupling mechanism, 1 * 2Y axle coupling mechanism, 1 * 2Z axle coupling mechanism, X-axis optical fibre gyro module, X-axis optical fiber add that table module, Y-axis optical fibre gyro module, Y-axis optical fiber add the table module, Z axle optical fiber adds table module, Z axle optical fibre gyro module, 3 * 1 bundling devices, second detector, center processor, first detector and multiplexed treatment circuit; Wherein, 2 * 3 coupling mechanisms, one end respectively with light source, first detector links to each other, 2 * 3 coupling mechanism other ends respectively with 1 * 2X axle coupling mechanism, 1 * 2Y axle coupling mechanism links to each other with 1 * 2Z axle coupling mechanism, the optical interface P1 of 1 * 2X axle coupling mechanism and X-axis optical fibre gyro module, X-axis optical fiber adds the optical interface P3 that shows module and links to each other, the optical interface P4 of 1 * 2Y axle coupling mechanism and Y-axis optical fibre gyro module, Y-axis optical fiber adds the optical interface P6 that shows module and links to each other, 1 * 2Z axle coupling mechanism and Z axle optical fiber add the optical interface P8 that shows module, the optical interface P9 of Z axle optical fibre gyro module links to each other, X-axis optical fiber adds the optical interface P2 that shows module, Y-axis optical fiber adds the optical interface P5 that shows module, Z axle optical fiber adds the optical interface P7 that shows module and links to each other with second detector by 3 * 1 bundling devices, the circuit interface E1 of X-axis optical fibre gyro module, X-axis optical fiber adds the circuit interface E2 that shows module, the circuit interface E3 of Y-axis optical fibre gyro module, Y-axis optical fiber adds the circuit interface E4 that shows module, Z axle optical fiber adds the circuit interface E5 that shows module, the circuit interface E6 of Z axle optical fibre gyro module, second detector all links to each other with center processor, and first detector links to each other with center processor by multiplexed treatment circuit.
Described X-axis optical fibre gyro module, Y-axis optical fibre gyro module, Z axle optical fibre gyro module have identical structure, and wherein X-axis optical fibre gyro module comprises the multi-functional integrated optical circuit of first Y waveguide, fiber optic coils, gain control circuit, D/A change-over circuit; The multi-functional integrated optical circuit of first Y waveguide links to each other with fiber optic coils, and the D/A change-over circuit links to each other with the multi-functional integrated optical circuit of first Y waveguide by gain control circuit.
Described X-axis optical fiber adds that table module, Y-axis optical fiber add the table module, Z axle optical fiber adds the table module and has identical structure, wherein, X-axis optical fiber adds the table module and comprises the multi-functional integrated optical circuit of second Y waveguide, optical fiber flexible disk, 2 * 1 bundling devices, D/A converter, multiplier, low-pass filter, integrating circuit, operational amplifier, bandpass filter, reset circuit, oscillator; The multi-functional integrated optical circuit of second Y waveguide links to each other with the optical fiber flexible disk, the optical fiber flexible disk links to each other with 2 * 1 bundling devices, D/A converter, multiplier, low-pass filter, integrating circuit, operational amplifier link to each other successively, operational amplifier links to each other with the multi-functional integrated optical circuit of second Y waveguide, low-pass filter is exported signal by bandpass filter, reset circuit links to each other with integrating circuit, and is connected in operational amplifier jointly with integrating circuit, and oscillator links to each other with multiplier, operational amplifier respectively.
The present invention adds the table module by the optical fibre gyro module of three groups of orthohormbic structures and optical fiber and forms, a shared light source, utilize the vacant port of traditional fiber gyro coupling mechanism to add the light source input end of showing module as optical fiber, add the table module by optical fibre gyro module and optical fiber and measure axial angular velocity and acceleration simultaneously, realize the integrated of one dimension inertia measurement.Three axial optical fibre gyro modules and three axial optical fiber add a table module shared detector respectively, adopt the movable information on three orthogonal directionss of multiplexing technique extraction, total system is by the unified control of center processor, realize that optical fibre gyro module and optical fiber add the fusion of showing module, thereby realize all solid state, the full fiberize, integrated and integrated of whole inertial measurement system, for the upgrading of change system provides strong technical support.
Description of drawings
Fig. 1 is the structured flowchart based on all solid state high speed rotating measuring system of optical fiber structure;
Fig. 2 is the structured flowchart of X-axis optical fibre gyro module among Fig. 1;
Fig. 3 adds the structured flowchart of showing module for X-axis optical fiber among Fig. 1.
Embodiment
Further specify the present invention below in conjunction with accompanying drawing.
As shown in Figure 1, comprise that based on all solid state high speed rotating measuring system of optical fiber structure light source 1,2 * 3 coupling mechanisms 2,1 * 2X axle coupling mechanism 3,1 * 2Y axle coupling mechanism 4,1 * 2Z axle coupling mechanism 5, X-axis optical fibre gyro module 6, X-axis optical fiber add that table module 7, Y-axis optical fibre gyro module 8, Y-axis optical fiber add table module 9, Z axle optical fiber adds table module 10, Z axle optical fibre gyro module 11,3 * 1 bundling devices 12, second detector 13, center processor 14, first detector 15 and multiplexed treatment circuit 16; Wherein, 2 * 3 coupling mechanisms 2 are used for beam split, one end respectively with light source 1, first detector 15 links to each other, the other end respectively with 1 * 2X axle coupling mechanism 3,1 * 2Y axle coupling mechanism 4 links to each other with 1 * 2Z axle coupling mechanism 5, the optical interface P1 of 1 * 2X axle coupling mechanism 3 and X-axis optical fibre gyro module 6, X-axis optical fiber adds the optical interface P3 that shows module 7 and links to each other, the optical interface P4 of 1 * 2Y axle coupling mechanism 4 and Y-axis optical fibre gyro module 8, Y-axis optical fiber adds the optical interface P6 that shows module 9 and links to each other, 1 * 2Z axle coupling mechanism 5 adds the optical interface P8 that shows module 10 with Z axle optical fiber, the optical interface P9 of Z axle optical fibre gyro module 11 links to each other, X-axis optical fiber adds the optical interface P2 that shows module 7, Y-axis optical fiber adds the optical interface P5 that shows module 9, Z axle optical fiber adds the optical interface P7 that shows module 10 and links to each other with second detector 13 by 3 * 1 bundling devices 12, the circuit interface E1 of X-axis optical fibre gyro module 6, X-axis optical fiber adds the circuit interface E2 that shows module 7, the circuit interface E3 of Y-axis optical fibre gyro module 8, Y-axis optical fiber adds the circuit interface E4 that shows module 9, Z axle optical fiber adds the circuit interface E5 that shows module 10, the circuit interface E6 of Z axle optical fibre gyro module 11, second detector 13 all links to each other with center processor 14, and first detector 15 links to each other with center processor 14 by multiplexed treatment circuit 16.Native system is three orthohormbic structures.
As shown in Figure 2, X-axis optical fibre gyro module 6, Y-axis optical fibre gyro module 8, Z axle optical fibre gyro module 11 have identical structure, and wherein X-axis optical fibre gyro module 6 comprises the multi-functional integrated optical circuit 17 of first Y waveguide, fiber optic coils 18, gain control circuit 19, D/A change-over circuit 20; The multi-functional integrated optical circuit 17 of first Y waveguide links to each other with fiber optic coils 18, and D/A change-over circuit 20 links to each other with the multi-functional integrated optical circuit 17 of first Y waveguide by gain control circuit 19.
As shown in Figure 3, X-axis optical fiber adds that table module 7, Y-axis optical fiber add table module 9, Z axle optical fiber adds table module 10 and has identical structure, wherein, X-axis optical fiber adds table module 7 and comprises the multi-functional integrated optical circuit 21 of second Y waveguide, optical fiber flexible disk 22,2 * 1 bundling devices 23, D/A converter 24, multiplier 25, low-pass filter 26, integrating circuit 27, operational amplifier 28, bandpass filter 29, reset circuit 30, oscillator 31; The multi-functional integrated optical circuit 21 of second Y waveguide links to each other with optical fiber flexible disk 22, optical fiber flexible disk 22 links to each other with 2 * 1 bundling devices 23, D/A converter 24, multiplier 25, low-pass filter 26, integrating circuit 27, operational amplifier 28 link to each other successively, operational amplifier 28 links to each other with the multi-functional integrated optical circuit 21 of second Y waveguide, low-pass filter 26 is exported signal by bandpass filter 29, reset circuit 30 links to each other with integrating circuit 27, and being connected in operational amplifier 28 jointly with integrating circuit 27, oscillator 31 links to each other with multiplier 25, operational amplifier 28 respectively.
The concrete course of work of the present invention is as follows:
Light source 1 is luminous to enter 1 * 2X axle coupling mechanism 3,1 * 2Y axle coupling mechanism 4,1 * 2Z axle coupling mechanism 5 in 2 minutes three the tunnel respectively through 2 * 3 coupling mechanisms, X-axis, Y-axis, Z axle phase quadrature, has identical structure, with the X-axis is the example explanation, light wave is divided into two bundles after through 3 beam split of 1 * 2X axle coupling mechanism, a branch ofly enter X-axis optical fibre gyro module 6 by fiber port P1, another bundle enters X-axis optical fiber by fiber port P3 and adds table module 7.The light wave that enters X-axis optical fibre gyro module 6 by P1 enters fiber optic coils 18 through the multi-functional integrated optical circuit 17 of first Y waveguide by 2 ports, respectively along in fiber optic coils 18, transmitting clockwise and counterclockwise, this moment is if there is angular velocity to produce, just have a phase differential that is directly proportional with angular velocity of rotation between the light wave that two bundles transmit in opposite direction, by detector 15, center processor 14, D/A converter 20, gain control circuit 19, thereby the detection of the multi-functional integrated optical circuit 17 of first Y waveguide just can calculate the angular velocity of rotation that this phase differential obtains optical fibre gyro, because X-axis optical fibre gyro module 6, Y-axis optical fibre gyro module 8, Z axle optical fibre gyro module 11 orthogonal thereto structures, by first detector 15, multiplexed treatment circuit 16, the Monitoring and Controlling of center processor 14, can obtain three axial angular velocity informations simultaneously, i.e. the angular motion attitude of system.Optical fiber adds table and is based on the measurement of Mach-Zehnder two-beam interference principle realization to small change in optical path length in the optical fiber.Entering X-axis optical fiber by fiber port P3 adds the light wave of showing module 7 and is divided into two bundles through the multi-functional integrated optical circuit 21 of second Y waveguide and enters optical fiber flexible disk 22, under the acceleration effect, optical fiber flexible disk 22 is subjected to the constant amplitude reversed stress and forms push-pull configuration, optical fiber flexible disk 22 interferes the phase place of the light wave in the arm to change, by second detector 13, center processor 14, D/A converter 24, multiplier 25, low-pass filter 26, integrating circuit 27, operational amplifier 28, bandpass filter 29, reset circuit 30, the phase demodulation circuit that oscillator 31 is formed can calculate relevant acceleration information, and the optical fiber of three quadratures adds the table module can calculate three axial acceleration informations.Total system relevant acceleration and angular velocity information just detect like this, just the attitude information of system can be exported to terminal by auxiliary resolving with information processing.
The optical fibre gyro module of three road quadratures of the present invention and optical fiber add table module while measuring system athletic posture under a center processor control, three tunnel optical fibre gyro modules and three road optical fiber add a table module shared detector respectively, adopt the angular velocity and the acceleration information of multiplexing technique real-time resolving system, system stability, reliability height, and all solid state, integrated, the miniaturization of system have been realized, for the upgrading of new equipment system and the transformation of original change system provide powerful technical support.
Claims (3)
1. all solid state high speed rotating measuring system based on optical fiber structure is characterized in that comprising light source (1), 2 * 3 coupling mechanisms (2), 1 * 2X axle coupling mechanism (3), 1 * 2Y axle coupling mechanism (4), 1 * 2Z axle coupling mechanism (5), X-axis optical fibre gyro module (6), X-axis optical fiber adds table module (7), Y-axis optical fibre gyro module (8), Y-axis optical fiber adds table module (9), Z axle optical fiber adds table module (10), Z axle optical fibre gyro module (11), 3 * 1 bundling devices (12), second detector (13), center processor (14), first detector (15) and multiplexed treatment circuit (16); Wherein, 2 * 3 coupling mechanisms (2) one ends respectively with light source (1), first detector (15) links to each other, 2 * 3 coupling mechanisms (2) other end respectively with 1 * 2X axle coupling mechanism (3), 1 * 2Y axle coupling mechanism (4) links to each other with 1 * 2Z axle coupling mechanism (5), the optical interface P1 of 1 * 2X axle coupling mechanism (3) and X-axis optical fibre gyro module (6), the optical interface P3 that X-axis optical fiber adds table module (7) links to each other, the optical interface P4 of 1 * 2Y axle coupling mechanism (4) and Y-axis optical fibre gyro module (8), the optical interface P6 that Y-axis optical fiber adds table module (9) links to each other, 1 * 2Z axle coupling mechanism (5) adds the optical interface P8 that shows module (10) with Z axle optical fiber, the optical interface P9 of Z axle optical fibre gyro module (11) links to each other, X-axis optical fiber adds the optical interface P2 of table module (7), Y-axis optical fiber adds the optical interface P5 of table module (9), the optical interface P7 that Z axle optical fiber adds table module (10) links to each other with second detector (13) by 3 * 1 bundling devices (12), the circuit interface E1 of X-axis optical fibre gyro module (6), X-axis optical fiber adds the circuit interface E2 of table module (7), the circuit interface E3 of Y-axis optical fibre gyro module (8), Y-axis optical fiber adds the circuit interface E4 of table module (9), Z axle optical fiber adds the circuit interface E5 of table module (10), the circuit interface E6 of Z axle optical fibre gyro module (11), second detector (13) all links to each other with center processor (14), and first detector (15) links to each other with center processor (14) by multiplexed treatment circuit (16).
2. a kind of all solid state high speed rotating measuring system as claimed in claim 1 based on optical fiber structure, it is characterized in that described X-axis optical fibre gyro module (6), Y-axis optical fibre gyro module (8), Z axle optical fibre gyro module (11) have identical structure, wherein X-axis optical fibre gyro module (6) comprises the multi-functional integrated optical circuit of first Y waveguide (17), fiber optic coils (18), gain control circuit (19), D/A change-over circuit (20); The multi-functional integrated optical circuit of first Y waveguide (17) links to each other with fiber optic coils (18), and D/A change-over circuit (20) links to each other with the multi-functional integrated optical circuit of first Y waveguide (17) by gain control circuit (19).
3. a kind of all solid state high speed rotating measuring system as claimed in claim 1 based on optical fiber structure, it is characterized in that described X-axis optical fiber adds table module (7), Y-axis optical fiber adds table module (9), Z axle optical fiber adds table module (10) and has identical structure, wherein, X-axis optical fiber adds table module (7) and comprises the multi-functional integrated optical circuit of second Y waveguide (21), optical fiber flexible disk (22), 2 * 1 bundling devices (23), D/A converter (24), multiplier (25), low-pass filter (26), integrating circuit (27), operational amplifier (28), bandpass filter (29), reset circuit (30), oscillator (31); The multi-functional integrated optical circuit of second Y waveguide (21) links to each other with optical fiber flexible disk (22), optical fiber flexible disk (22) links to each other with 2 * 1 bundling devices (23), D/A converter (24), multiplier (25), low-pass filter (26), integrating circuit (27), operational amplifier (28) links to each other successively, operational amplifier (28) links to each other with the multi-functional integrated optical circuit of second Y waveguide (21), low-pass filter (26) is exported signal by bandpass filter (29), reset circuit (30) links to each other with integrating circuit (27), and be connected in operational amplifier (28) jointly with integrating circuit (27), oscillator (31) respectively with multiplier (25), operational amplifier (28) links to each other.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105466411A (en) * | 2015-12-30 | 2016-04-06 | 浙江大学 | Four-axis optical fiber gyro and north finding method thereof |
| US11313682B1 (en) | 2020-11-13 | 2022-04-26 | National Sun Yat-Sen University | Silicon photonic integrated circuit and fiber optic gyroscope apparatus using grating couplers |
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| 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 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105466411A (en) * | 2015-12-30 | 2016-04-06 | 浙江大学 | Four-axis optical fiber gyro and north finding method thereof |
| CN105466411B (en) * | 2015-12-30 | 2018-09-07 | 浙江大学 | Four axis fibre optic gyroscopes and its north finding method |
| US11313682B1 (en) | 2020-11-13 | 2022-04-26 | National Sun Yat-Sen University | Silicon photonic integrated circuit and fiber optic gyroscope apparatus using grating couplers |
| TWI765412B (en) * | 2020-11-13 | 2022-05-21 | 國立中山大學 | Silicon photonic integrated circuit and fiber optic gyroscope apparatus |
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Application publication date: 20111228 |