CN101056489A - Dual light source driving temperature control and switching circuit used for the interference optical fiber top - Google Patents
Dual light source driving temperature control and switching circuit used for the interference optical fiber top Download PDFInfo
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Abstract
The invention discloses a temperature controlling and switching circuit drived by dual-optical sources used for interference fiber-optic gyroes, which is made up of processor, A electrical source switch, B electrical source switch, A constant current drive circuit, B constant current drive circuit, A temperature controlling circuit, and B temperature controlling circuit. The working state of the A, B constant current drive circuit and temperature controlling circuit are controlled by A, B electrical source switches and the drive current of the optical resource is regulated by processor. The inventive temperature controlling and switching circuit drived by dual-optical sources adopts two channel optical source to provide a constant current drive and regulation thereof, temperature control and optical sources switching. At the common working situation, only one optical source works and the other is cold backup. The state of the working optical source is monitored, which will close the present working optical source and open the electrical source of the cold backup optical source when the working state can not meet the requirement of gyroes. Then, the gyroes would work at the working mode of the backup optical source.
Description
Technical field
The present invention relates to temperature control and commutation circuit that a kind of light source drives, more particularly say, be meant a kind of dual light source driving temperature control and commutation circuit that is used for interference optical fiber top.
Background technology
Interference optical fiber top is a kind of angular speed Fibre Optical Sensor based on the SAGNAC effect, so it has complete attitude, no-rotary part and friction means, the life-span is long, dynamic range is big, no start-up time, simple in structure, size is little, advantage such as in light weight.Because above these advantages, interference optical fiber top has progressively replaced mechanical gyro in a lot of fields; Along with reaching its maturity of space technology, interference optical fiber top has begun to use on satellite as navigational material.But the particularity of space applied environment and the chronicity of use have proposed harsh more requirement to the reliability of interference optical fiber top.
Light source is the core devices in the optic fiber gyroscope, its various indexs all have very big influence for the performance of gyro, as luminous power to the influence of gyro accuracy of detection, optical source wavelength to the influence of gyro scale factor, source degree of polarization to influence of gyro polarization noise or the like.Simultaneously, light source also is a device relatively more fragile in the gyro; Need stable constant-current driving and thermostatic control during its operate as normal, the output characteristic of light source will change if condition of work can not satisfy, and further influences the gyro performance.For the optic fiber gyroscope that use in the space, environment such as thermal vacuum, electromagnetic radiation is unavoidable to the damage of light source, meanwhile, light source driving circuit and temperature control circuit also can be subjected to the influence of space irradiation, therefore the Redundancy Design that light source is done is except to the redundancy of light source own, also needing partly increases redundancy to light source constant-current driving and temperature control circuit, to improve the reliability that gyro is used in the space.
Summary of the invention
The purpose of this invention is to provide a kind of dual light source driving temperature control and commutation circuit that is used for interference optical fiber top, this dual light source driving temperature control and commutation circuit can provide the operation of constant-current driving and adjustment, temperature control and light source switching for the two-way light source.Under normal operation, have only one road light source to be in the cold standby state at other one road light source of operate as normal.The state of work light is monitored, and just the power-off of work at present light source can be opened simultaneously the power supply of cold standby light source when its operating state can't satisfy the gyro requirement, and after this gyro just is operated under the backup light source mode of operation.
The present invention is a kind of dual light source driving temperature control and commutation circuit that is used for interference optical fiber top, form by processor, a-power supply switch, B-source switch, A constant-current drive circuit, B constant-current drive circuit, A temperature control circuit and B temperature control circuit, control the operating state of A, B constant-current drive circuit and temperature control circuit respectively by A, B-source switch, and regulate the drive current of light source by processor.
The advantage of dual light source driving temperature control of the present invention and commutation circuit is:
(1) simple in structure and independent, control adopts individual devices to finish to the temperature of light source, and the various components and parts that brought when having avoided using discrete device do not match and wait the harmful effect that realization causes to function.The power supply of two-way circuit separates fully, and one tunnel damage can not cause other one tunnel operational failure.
(2) Redundancy Design completely, the two-way light source drives and temperature control circuit can both independently be worked, and the use mains switch just can carry out handover operation easily.To this redundancy feature of the very high occasion of some reliability requirement is to guarantee key factor working properly.
(3) regulate the light source drive current by DSP control DA, improved the flexibility of light source driving circuit work.
Description of drawings
Fig. 1 is the structured flowchart of dual light source driving temperature control of the present invention and commutation circuit.
Fig. 2 is processor splicing ear circuit theory diagrams.
Fig. 3 A is the circuit theory diagrams of a-power supply switch.
Fig. 3 B is the circuit theory diagrams of B-source switch.
Fig. 4 A is an A constant-current drive circuit schematic diagram.
Fig. 4 B is a B constant-current drive circuit schematic diagram.
Fig. 5 A is an A temperature control circuit schematic diagram.
Fig. 5 B is a B temperature control circuit schematic diagram.
Embodiment
The present invention is described in further detail below in conjunction with accompanying drawing.
The present invention is a kind of dual light source driving temperature control and commutation circuit that is used for interference optical fiber top, this circuit is made up of a processor, a-power supply switch, B-source switch, A constant-current drive circuit, B constant-current drive circuit, A temperature control circuit and B temperature control circuit, control the operating state of A, B two-way constant-current drive circuit and temperature control circuit respectively by A, B-source switch, and regulate the drive current (as shown in Figure 1) of light source by dsp processor.In the present invention, the A constant-current drive circuit connects with dsp processor U1 by first via D/A converter U2-1, the B constant-current drive circuit connects with dsp processor U1 by the second road D/A converter U3-1, realize utilizing dsp processor control DA to regulate the light source drive current, improved the flexibility of light source driving circuit work.
Referring to shown in Figure 2, described processor U1 chooses TMS320 series DSP chip, terminal connects: first via mains switch control signal end 2 connects with the Enable Pin 4 of a-power supply switch U2-2, the second road mains switch control signal end 3 connects with the Enable Pin 4 of B-source switch U3-2, spi bus output signal end 45 respectively with the signal input part 7 of first via D/A converter U2-1, the signal input part 7 of the second road D/A converter U3-1 connects, output terminal of clock 47 respectively with the input end of clock 6 of first via D/A converter U2-1, the input end of clock 6 of the second road D/A converter U3-1 connects, the chip selection signal output 49 of first via D/A converter connects with the chip selection signal input 5 of first via D/A converter U2-1, and the chip selection signal output 50 of the second road D/A converter connects with the chip selection signal input 5 of the second road D/A converter U3-1.
Shown in Fig. 3 A, described a-power supply switch is chosen the TPS2024 chip, terminal connects: series resistance R1 between the Enable Pin 4 of a-power supply switch U2-2 and the ground, hold 1 ground connection, connect the 3.3V power supply after end 2, end 3 series connection, the power supply of end 6, end 7, end 8 series connection back output first via constant-current driving and temperature control circuit.
Shown in Fig. 3 B, described B-source switch is chosen the TPS2024 chip, terminal connects: series resistance R17 between the Enable Pin 4 of B-source switch U3-2 and the ground, hold 1 ground connection, connect the 3.3V power supply after end 2, end 3 series connection, the power supply of end 6, end 7, end 8 series connection back output the second tunnel constant-current driving and temperature control circuit.
Shown in Fig. 4 A, described A constant-current drive circuit is by A road D/A converter U2-1, A voltage reference source U2-3 and A road operational amplification circuit constitute, terminal connects: the power supply end of a-power supply switch U2-2 connects through the chip selection signal input 5 of resistance R 4 with A road D/A converter U2-1, the power supply of a-power supply switch U2-2 connects through the input end of clock 6 of resistance R 3 with A road D/A converter U2-1, the power supply of a-power supply switch U2-2 connects with A road D/A converter U2-1 signal input part 7 through resistance R 2, the power supply of a-power supply switch U2-2 connects with end 1, hold 8 ground connection, end 1 is through capacitor C 1, capacitor C 2 back in parallel ground connection, reference voltage input terminal 2 connects with the reference voltage output terminal 4 of voltage reference source U2-3, D/A output 4 connects with ground through resistance R 16, connect through the negative input 2 of resistance R 15 again with A road operational amplifier U2-4, connect through the end 1 of resistance R 13 again with A road operational amplifier U2-4, the shutoff control end 1 of A voltage reference source U2-3, connect the 3.3V power supply after Input voltage terminal 2 parallel connections, and by capacitor C 3 ground connection, voltage measurement end 3 links the back by capacitor C 4 ground connection with reference voltage output terminal 4, holds 5 ground connection; Reference voltage output terminal 4 passes through resistance R 5 through resistance R 6 ground connection, and with first positive input 3 of A road operational amplifier U2-4, second positive input 5 connects, second positive input 5 is through capacitor C 7 ground connection, second negative input 6 connects with end 1 through resistance R 8, second negative input 6 connects through the emitter of resistance R 9 with triode V1, the emitter of triode V1 is through resistance R 10, resistance R 11 backs in parallel connect with light source power supply end LD_1, light source power supply end LD_1 connects with first negative input 2 of A road operational amplifier U2-4 by resistance R 14, and by capacitor C 5, meet 3.3V after capacitor C 6 parallel connections, end 7 connects with the base stage of triode V1, end 4 connects ground connection afterwards with the collector electrode of triode V1, hold 8 to meet 3.3V.
Shown in Fig. 4 B, described B constant-current drive circuit is by B road D/A converter U3-1, B voltage reference source U3-3 and B road operational amplification circuit constitute, terminal connects: the power supply end of B-source switch U3-2 connects through the chip selection signal input 5 of resistance R 20 with B road D/A converter U3-1, the power supply of B-source switch U3-2 connects through the input end of clock 6 of resistance R 19 with B road D/A converter U3-1, the power supply of B-source switch U3-2 connects with B road D/A converter U3-1 signal input part 7 through resistance R 18, the power supply of B-source switch U3-2 connects with end 1, hold 8 ground connection, end 1 is through capacitor C 8, capacitor C 9 back in parallel ground connection, reference voltage input terminal 2 connects with the reference voltage output terminal 4 of voltage reference source U3-3, D/A output 4 connects with ground through resistance R 22, connect through the negative input 2 of resistance R 23 again with B road operational amplifier U3-4, connect through the end 1 of resistance R 24 again with B road operational amplifier U3-4, the shutoff control end 1 of B voltage reference source U3-3, connect the 3.3V power supply after Input voltage terminal 2 parallel connections, and by capacitor C 10 ground connection, voltage measurement end 3 links the back by capacitor C 11 ground connection with reference voltage output terminal 4, holds 5 ground connection; Reference voltage output terminal 4 passes through resistance R 21 through resistance R 26 ground connection, and with first positive input 3 of B road operational amplifier U3-4, second positive input 5 connects, second positive input 5 is through capacitor C 14 ground connection, second negative input 6 connects with end 1 through resistance R 28, second negative input 6 connects through the emitter of resistance R 29 with triode V2, the emitter of triode V2 is through resistance R 30, resistance R 31 backs in parallel connect with light source power supply end LD_2, light source power supply end LD_2 connects with first negative input 2 of B road operational amplifier U3-4 by resistance R 25, and by capacitor C 12, meet 3.3V after capacitor C 13 parallel connections, end 7 connects with the base stage of triode V2, end 4 connects ground connection afterwards with the collector electrode of triode V2, hold 8 to meet 3.3V.
Shown in Fig. 5 A, described A temperature control circuit is chosen the DRV594 chip of TI company, terminal connects: the thermistor input signal RT1 of light source connects with negative sense comparison information input 7, and meet 3.3V by resistance R 40, forward relatively input 6 passes through resistance R 41 ground connection, and meet 3.3V by resistance R 42, configuration input 5 is through capacitor C 40 ground connection, configuration input 4 is through capacitor C 41 ground connection, configuration input 3 is through resistance R 43 ground connection, simulation feeder ear 1 meets 3.3V, and by capacitor C 42 ground connection, simulation ground input 2 ground connection, turn-off control input signals 8 and meet 3.3V, warning input 9 meets 3.3V through resistance R 44, warning input 10 meets 3.3V through resistance R 45, numeral power supply input 12,13,14,28,29,30 meet 3.3V, and by capacitor C 43 ground connection, negative sense drive output 15,16, meet the light source first refrigeration input TEC-_1 after 17 connections, and by capacitor C 44, capacitor C 45 backs in parallel and the light source second refrigeration input TEC+_1, digitally input 18,19,20,21,22,23 ground connection, forward drive output 24,25,26,27 connect after inductance L 1 connects configuration input 32 ground connection with the light source second refrigeration input TEC+_1.
Shown in Fig. 5 B, described B temperature control circuit is chosen the DRV594 chip of TI company, terminal connects:. the thermistor input signal RT2 of light source connects with negative sense comparison information input 7, and meet 3.3V by resistance R 35, forward relatively input 6 passes through resistance R 34 ground connection, and meet 3.3V by resistance R 33, configuration input 5 is through capacitor C 25 ground connection, configuration input 4 is through capacitor C 26 ground connection, configuration input 3 is through resistance R 36 ground connection, simulation feeder ear 1 meets 3.3V, and by capacitor C 27 ground connection, simulation ground input 2 ground connection, turn-off control input signals 8 and meet 3.3V, warning input 9 meets 3.3V through resistance R 37, warning input 10 meets 3.3V through resistance R 38, numeral power supply input 12,13,14,28,29,30 meet 3.3V, and by capacitor C 28 ground connection, negative sense drive output 15,16, meet the light source second refrigeration input TEC-_2 after 17 connections, and by capacitor C 29, capacitor C 30 backs in parallel and the light source first refrigeration input TEC+_2, digitally input 18,19,20,21,22,23 ground connection, forward drive output 24,25,26,27 connect after inductance L 2 connects configuration input 32 ground connection with the light source first refrigeration input TEC+_2.
Dual light source driving temperature control of the present invention and commutation circuit, because the redundancy backup design of having adopted two light sources and having driven constant current and temperature control circuit, when one road light source and interlock circuit break down, can in time switch to other one road light source and interlock circuit, and do not influence the operate as normal of interference optical fiber top after switching, improved optic fiber gyroscope space reliability of applying greatly.
Claims (5)
1, a kind of dual light source driving temperature control and commutation circuit that is used for interference optical fiber top, it is characterized in that: form by processor, a-power supply switch, B-source switch, A constant-current drive circuit, B constant-current drive circuit, A temperature control circuit and B temperature control circuit, control the operating state of A, B constant-current drive circuit and temperature control circuit respectively by A, B-source switch, and regulate the drive current of light source by processor.
2, dual light source driving temperature control according to claim 1 and commutation circuit, it is characterized in that: described processor U1 chooses TMS320 series DSP chip, described a-power supply switch, B-source switch are chosen the TPS2024 chip, and described A temperature control circuit, B temperature control circuit are chosen the DRV594 chip of TI company.
3, dual light source driving temperature control according to claim 1 and commutation circuit, it is characterized in that: each terminal connection of described processor is: first via mains switch control signal end 2 connects with the Enable Pin 4 of a-power supply switch U2-2, the second road mains switch control signal end 3 connects with the Enable Pin 4 of B-source switch U3-2, spi bus output signal end 45 respectively with the signal input part 7 of first via D/A converter U2-1, the signal input part 7 of the second road D/A converter U3-1 connects, output terminal of clock 47 respectively with the input end of clock 6 of first via D/A converter U2-1, the input end of clock 6 of the second road D/A converter U3-1 connects, the chip selection signal output 49 of first via D/A converter connects with the chip selection signal input 5 of first via D/A converter U2-1, and the chip selection signal output 50 of the second road D/A converter connects with the chip selection signal input 5 of the second road D/A converter U3-1.
4, dual light source driving temperature control according to claim 1 and commutation circuit, it is characterized in that: each terminal connection of described a-power supply switch is: series resistance R1 between the Enable Pin 4 of a-power supply switch U2-2 and the ground, hold 1 ground connection, connect the 3.3V power supply after end 2, end 3 series connection, the power supply of end 6, end 7, end 8 series connection back output first via constant-current driving and temperature control circuit; Series resistance R17 between the Enable Pin 4 of described B-source switch U3-2 and the ground holds 1 ground connection, connects the 3.3V power supply after end 2, end 3 series connection, the power supply of end 6, end 7, end 8 series connection back output the second tunnel constant-current driving and temperature control circuit.
5, dual light source driving temperature control according to claim 1 and commutation circuit, it is characterized in that: described A constant-current drive circuit is by A road D/A converter U2-1, A voltage reference source U2-3 and A road operational amplification circuit constitute, terminal connects: the power supply end of a-power supply switch U2-2 connects through the chip selection signal input 5 of resistance R 4 with A road D/A converter U2-1, the power supply of a-power supply switch U2-2 connects through the input end of clock 6 of resistance R 3 with A road D/A converter U2-1, the power supply of a-power supply switch U2-2 connects with A road D/A converter U2-1 signal input part 7 through resistance R 2, the power supply of a-power supply switch U2-2 connects with end 1, hold 8 ground connection, end 1 is through capacitor C 1, capacitor C 2 back in parallel ground connection, reference voltage input terminal 2 connects with the reference voltage output terminal 4 of voltage reference source U2-3, D/A output 4 connects with ground through resistance R 16, connect through the negative input 2 of resistance R 15 again with A road operational amplifier U2-4, connect through the end 1 of resistance R 13 again with A road operational amplifier U2-4, the shutoff control end 1 of A voltage reference source U2-3, connect the 3.3V power supply after Input voltage terminal 2 parallel connections, and by capacitor C 3 ground connection, voltage measurement end 3 links the back by capacitor C 4 ground connection with reference voltage output terminal 4, holds 5 ground connection; Reference voltage output terminal 4 passes through resistance R 5 through resistance R 6 ground connection, and with first positive input 3 of A road operational amplifier U2-4, second positive input 5 connects, second positive input 5 is through capacitor C 7 ground connection, second negative input 6 connects with end 1 through resistance R 8, second negative input 6 connects through the emitter of resistance R 9 with triode V1, the emitter of triode V1 is through resistance R 10, resistance R 11 backs in parallel connect with light source power supply end LD_1, light source power supply end LD_1 connects with first negative input 2 of A road operational amplifier U2-4 by resistance R 14, and by capacitor C 5, meet 3.3V after capacitor C 6 parallel connections, end 7 connects with the base stage of triode V1, end 4 connects ground connection afterwards with the collector electrode of triode V1, hold 8 to meet 3.3V; Described B constant-current drive circuit is by B road D/A converter U3-1, B voltage reference source U3-3 and B road operational amplification circuit constitute, terminal connects: the power supply end of B-source switch U3-2 connects through the chip selection signal input 5 of resistance R 20 with B road D/A converter U3-1, the power supply of B-source switch U3-2 connects through the input end of clock 6 of resistance R 19 with B road D/A converter U3-1, the power supply of B-source switch U3-2 connects with B road D/A converter U3-1 signal input part 7 through resistance R 18, the power supply of B-source switch U3-2 connects with end 1, hold 8 ground connection, end 1 is through capacitor C 8, capacitor C 9 back in parallel ground connection, reference voltage input terminal 2 connects with the reference voltage output terminal 4 of voltage reference source U3-3, D/A output 4 connects with ground through resistance R 22, connect through the negative input 2 of resistance R 23 again with B road operational amplifier U3-4, connect through the end 1 of resistance R 24 again with B road operational amplifier U3-4, the shutoff control end 1 of B voltage reference source U3-3, connect the 3.3V power supply after Input voltage terminal 2 parallel connections, and by capacitor C 10 ground connection, voltage measurement end 3 links the back by capacitor C 11 ground connection with reference voltage output terminal 4, holds 5 ground connection; Reference voltage output terminal 4 passes through resistance R 21 through resistance R 26 ground connection, and with first positive input 3 of B road operational amplifier U3-4, second positive input 5 connects, second positive input 5 is through capacitor C 14 ground connection, second negative input 6 connects with end 1 through resistance R 28, second negative input 6 connects through the emitter of resistance R 29 with triode V2, the emitter of triode V2 is through resistance R 30, resistance R 31 backs in parallel connect with light source power supply end LD_2, light source power supply end LD_2 connects with first negative input 2 of B road operational amplifier U3-4 by resistance R 25, and by capacitor C 12, meet 3.3V after capacitor C 13 parallel connections, end 7 connects with the base stage of triode V2, end 4 connects ground connection afterwards with the collector electrode of triode V2, hold 8 to meet 3.3V.
6, dual light source driving temperature control according to claim 1 and commutation circuit, it is characterized in that: each terminal connection of described A temperature control circuit is: the thermistor input signal RT1 of light source connects with negative sense comparison information input 7, and meet 3.3V by resistance R 40, forward relatively input 6 passes through resistance R 41 ground connection, and meet 3.3V by resistance R 42, configuration input 5 is through capacitor C 40 ground connection, configuration input 4 is through capacitor C 41 ground connection, configuration input 3 is through resistance R 43 ground connection, simulation feeder ear 1 meets 3.3V, and by capacitor C 42 ground connection, simulation ground input 2 ground connection, turn-off control input signals 8 and meet 3.3V, warning input 9 meets 3.3V through resistance R 44, warning input 10 meets 3.3V through resistance R 45, numeral power supply input 12,13,14,28,29,30 meet 3.3V, and by capacitor C 43 ground connection, negative sense drive output 15,16, meet the light source first refrigeration input TEC-_1 after 17 connections, and by capacitor C 44, capacitor C 45 backs in parallel and the light source second refrigeration input TEC+_1, digitally input 18,19,20,21,22,23 ground connection, forward drive output 24,25,26,27 connect after inductance L 1 connects configuration input 32 ground connection with the light source second refrigeration input TEC+_1; Each terminal of described B temperature control circuit connects: the thermistor input signal RT2 of light source connects with negative sense comparison information input 7, and meet 3.3V by resistance R 35, forward relatively input 6 passes through resistance R 34 ground connection, and meet 3.3V by resistance R 33, configuration input 5 is through capacitor C 25 ground connection, configuration input 4 is through capacitor C 26 ground connection, configuration input 3 is through resistance R 36 ground connection, simulation feeder ear 1 meets 3.3V, and by capacitor C 27 ground connection, simulation ground input 2 ground connection, turn-off control input signals 8 and meet 3.3V, warning input 9 meets 3.3V through resistance R 37, warning input 10 meets 3.3V through resistance R 38, numeral power supply input 12,13,14,28,29,30 meet 3.3V, and by capacitor C 28 ground connection, negative sense drive output 15,16, meet the light source second refrigeration input TEC-_2 after 17 connections, and by capacitor C 29, capacitor C 30 backs in parallel and the light source first refrigeration input TEC+_2, digitally input 18,19,20,21,22,23 ground connection, forward drive output 24,25,26,27 connect after inductance L 2 connects configuration input 32 ground connection with the light source first refrigeration input TEC+_2.
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| CN2007100653154A CN101056489B (en) | 2007-04-11 | 2007-04-11 | Dual light source driving temperature control and switching circuit used for the interference optical fiber top |
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| CN2007100653154A CN101056489B (en) | 2007-04-11 | 2007-04-11 | Dual light source driving temperature control and switching circuit used for the interference optical fiber top |
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| CN101056489A true CN101056489A (en) | 2007-10-17 |
| CN101056489B CN101056489B (en) | 2011-05-18 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103345281A (en) * | 2013-06-27 | 2013-10-09 | 上海亨通宏普通信技术有限公司 | Temperature control device of high reliable wavelength division array optical waveguide |
| CN103808321A (en) * | 2013-12-27 | 2014-05-21 | 北京航天时代光电科技有限公司 | Triaxial integrated optical fiber gyroscope inert measurement device based on optical source cold standby and compensation and installation method |
| CN105004282A (en) * | 2015-06-19 | 2015-10-28 | 北京唯创视界科技有限公司 | Depth data detecting device |
| CN109974683A (en) * | 2019-03-29 | 2019-07-05 | 北京航空航天大学 | Shock resistance interferometric fiber optic gyroscope and its detection method based on twin nuclei |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5650849A (en) * | 1993-10-16 | 1997-07-22 | British Aerospace Public Limited Company | Optical rate sensor having modulated clockwise and counterclockwise beams |
| US7274460B2 (en) * | 2004-06-02 | 2007-09-25 | Northrop Grumman Corporation | Stimulated rate optical power measurement in a fiber optic gyroscope |
| CN1904554B (en) * | 2006-07-28 | 2010-05-12 | 北京航空航天大学 | Low power consumption optical fiber gyro unitized designing method for space application |
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2007
- 2007-04-11 CN CN2007100653154A patent/CN101056489B/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103345281A (en) * | 2013-06-27 | 2013-10-09 | 上海亨通宏普通信技术有限公司 | Temperature control device of high reliable wavelength division array optical waveguide |
| CN103345281B (en) * | 2013-06-27 | 2015-11-25 | 江苏亨通光网科技有限公司 | Temperature control device of high reliable wavelength division array optical waveguide |
| CN103808321A (en) * | 2013-12-27 | 2014-05-21 | 北京航天时代光电科技有限公司 | Triaxial integrated optical fiber gyroscope inert measurement device based on optical source cold standby and compensation and installation method |
| CN105004282A (en) * | 2015-06-19 | 2015-10-28 | 北京唯创视界科技有限公司 | Depth data detecting device |
| CN105004282B (en) * | 2015-06-19 | 2018-01-16 | 上海图漾信息科技有限公司 | Depth data detection means |
| CN109974683A (en) * | 2019-03-29 | 2019-07-05 | 北京航空航天大学 | Shock resistance interferometric fiber optic gyroscope and its detection method based on twin nuclei |
| CN109974683B (en) * | 2019-03-29 | 2020-01-10 | 北京航空航天大学 | Impact-resistant interference type optical fiber gyroscope based on double-ring structure and detection method thereof |
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| CN101056489B (en) | 2011-05-18 |
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