CN208171288U - A kind of optical fibre gyro with light source self-checking function - Google Patents
A kind of optical fibre gyro with light source self-checking function Download PDFInfo
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- CN208171288U CN208171288U CN201820566910.XU CN201820566910U CN208171288U CN 208171288 U CN208171288 U CN 208171288U CN 201820566910 U CN201820566910 U CN 201820566910U CN 208171288 U CN208171288 U CN 208171288U
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Abstract
The utility model relates to a kind of optical fibre gyros with light source self-checking function, including light path part and circuit part, light path part includes light source, coupler, Y waveguide, fiber optic loop and detector, circuit part includes sequentially connected preceding road of discharging, adc circuit, fpga chip, DAC circuit and rear electric discharge road, preceding electric discharge road is connect with detector, electric discharge road is connect with Y waveguide afterwards, optical fibre gyro has self-checking circuit, there are four ports for coupler, after the light that light source issues enters the port A of coupler, a part of light enters Y waveguide from the port B of coupler, detector is entered by the C port of coupler by the signal that fiber optic loop returns, the port D from another part light stream to coupler and export, by self-checking circuit, into in fpga chip.Compared with prior art, the light source self-test scheme implementation of the utility model is simple, quickly can accurately determine light source light watt level, improve the product reliability of optical fibre gyro.
Description
Technical field
The utility model relates to a kind of optical fibre gyros, more particularly, to a kind of optical fibre gyro with light source self-checking function.
Background technique
Gyroscope is a kind of angular rate sensor, is the device of sensitive relative inertness space angular movement, is currently used for true
Determine the main sensors of movable body spatial movement posture.Optical fibre gyro movement-less part has the service life long, high reliablity, resistance to punching
The strong advantage of vibration resistance is hit, can be applied to the various fields in sea, land and air day, such as guided missile, rocket, satellite, aircraft, ship, submarine
Device.Since optical fibre gyro application environment is very harsh, it is desirable to which optical fibre gyro reliability is very high.And influence the optical fibre gyro longevity
The principal element of life is the service life of light source.Light source is active device, and as time goes by, the optical power that light source generates can gradually decline
Subtract, gradually influences gyro performance.Light source break down damage when, gyro also can failure, send out abnormal data, may result in and be
Posture of uniting is out of control, brings great casualties and economic loss.Therefore highly desirable a kind of light source self-test scheme, in light source light function
When rate decays, light source failure can determine, carry out fault alarm, avoid bringing loss.And current traditional fiber gyro lacks
Few light source self-test, this results in traditional fiber gyro to be unable to satisfy the demand of light source self-test, fault alarm, and therefore, urgent need will be set
Meter develops a kind of optical fibre gyro for having light source self-test.
Utility model content
The purpose of this utility model is exactly to provide a kind of with light source to overcome the problems of the above-mentioned prior art
The optical fibre gyro of self-checking function.
The purpose of this utility model can be achieved through the following technical solutions：
A kind of optical fibre gyro with light source self-checking function, including light path part and circuit part, the light path part
Including sequentially connected light source, coupler, Y waveguide, fiber optic loop, and the detector being connect with coupler, the circuit portion
Point include it is sequentially connected before electric discharge road, adc circuit, fpga chip, DAC circuit and after discharge road, the preceding electric discharge road with
Detector connection, rear road of discharging are connect with Y waveguide,
The optical fibre gyro has self-checking circuit, and for the coupler there are four port, the light that light source issues enters coupling
Behind the port A of clutch, a part of light enters Y waveguide from the port B of coupler, by fiber optic loop return signal by coupler C
Port enters detector, the port D from another part light stream to coupler and export, by self-checking circuit, into fpga chip.
The self-checking circuit includes sequentially connected second detector, operational amplifier circuit and the second adc circuit.
Photoelectric converter is had between the port A and the port D of the coupler.
Photoelectric converter is equipped between the port D and the second detector of the coupler.
The fpga chip has output interface, and the output interface is connected with light source power indicator light and alarm.
The alarm is vibrating chip.
Compared with prior art, the utility model has the following advantages that：
(1) the light source self-test scheme is used, implementation is simple, quickly can accurately determine light source light watt level, mention
The self-checking function for having supplied optical fibre gyro improves the product reliability of optical fibre gyro.
(2) output interface of fpga chip is connected with light source power indicator light and alarm, is unsatisfactory for making in light source optical power
With carrying out status alert when requiring.
(3) alarm is vibrating chip, and vibration will affect optical fibre gyro output valve, obtains the output signal with noise,
Play the role of reinforcing reminding with this.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model.
Specific embodiment
The utility model is described in detail in the following with reference to the drawings and specific embodiments.The present embodiment is with the utility model
Implemented premised on technical solution, the detailed implementation method and specific operation process are given, but the guarantor of the utility model
Shield range is not limited to the following embodiments.
Embodiment
Traditional fiber gyro by light source, coupler, Y waveguide, fiber optic loop, detector, preceding electric discharge road, ADC, FPGA, DAC,
Discharge the composition such as road afterwards.
The present embodiment light source self-test scheme increases self-checking circuit, self-checking circuit packet in former optical fibre gyro structure basis
Sequentially connected second detector 12, operational amplifier circuit 13 and the second adc circuit 14 are included, between the port A of coupler 2 and C port
With photoelectric converter, fpga chip 8 has output interface 11, and output interface 11 is connected with light source power indicator light and alarm,
Alarm is vibrating chip.
Optical fibre gyro has self-checking circuit, and for coupler 2 there are four port, the light that light source 1 issues enters the end A of coupler 2
After mouthful, a part of light enters Y waveguide 3 from the port B of coupler 2, the signal returned by fiber optic loop 4 by coupler 2 C port into
Enter detector 5, the port D from another part light stream to coupler 2 and export, by self-checking circuit, into fpga chip 8.
When work, for the light that light source 1 issues by coupler 2, a part of optical power enters Y waveguide 3, real by fiber optic loop 4
Existing optical fibre gyro normal function；Another part that coupler 2 comes out enters the second detector 12, and detector 12 is by optical power signals
Be converted to electric signal.Electric signal is amplified by operational amplifier circuit 13, is acquired by the second adc circuit 14, is generated digital signal and is sent into
Fpga chip 8.Fpga chip 8 passes through signal processing, can identify that light source issues optical power size, if unglazed.Work as light source light
When watt level is unsatisfactory for requirement, status alert is carried out.
Alternatively, when the volume of coupler 2 requires, photoelectric converter can be located to the D of coupler 2
Between port and the second detector 12.
Claims (6)
1. a kind of optical fibre gyro with light source self-checking function, including light path part and circuit part, the light path part packet
Include sequentially connected light source (1), coupler (2), Y waveguide (3), fiber optic loop (4), and the detector connecting with coupler (2)
(5), the circuit part includes sequentially connected preceding road (6), adc circuit (7), fpga chip (8), DAC circuit (9) of discharging
With rear electric discharge road (10), the preceding electric discharge road (6) connect with detector (5), and electric discharge road (10) is connect with Y waveguide (3) afterwards,
It is characterized in that, the optical fibre gyro has self-checking circuit, there are four port, light source (1) hairs for the coupler (2)
After light out enters the port A of coupler (2), a part of light enters Y waveguide (3) from the port B of coupler (2), by fiber optic loop
(4) return signal entered detector (5) by the C port of coupler (2), another part light stream to the port D of coupler (2) simultaneously
Output, by self-checking circuit, into fpga chip (8).
2. a kind of optical fibre gyro with light source self-checking function according to claim 1, which is characterized in that the self-test
Circuit includes sequentially connected second detector (12), operational amplifier circuit (13) and the second adc circuit (14).
3. a kind of optical fibre gyro with light source self-checking function according to claim 2, which is characterized in that the coupling
Photoelectric converter is had between the port A and the port D of device (2).
4. a kind of optical fibre gyro with light source self-checking function according to claim 2, which is characterized in that the coupling
Photoelectric converter is equipped between the port D and the second detector (12) of device (2).
5. a kind of optical fibre gyro with light source self-checking function according to claim 1, which is characterized in that the FPGA
Chip (8) has output interface (11), and the output interface (11) is connected with light source power indicator light and alarm.
6. a kind of optical fibre gyro with light source self-checking function according to claim 5, which is characterized in that the alarm
Device is vibrating chip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820566910.XU CN208171288U (en) | 2018-04-19 | 2018-04-19 | A kind of optical fibre gyro with light source self-checking function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820566910.XU CN208171288U (en) | 2018-04-19 | 2018-04-19 | A kind of optical fibre gyro with light source self-checking function |
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| Publication Number | Publication Date |
|---|---|
| CN208171288U true CN208171288U (en) | 2018-11-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201820566910.XU Active CN208171288U (en) | 2018-04-19 | 2018-04-19 | A kind of optical fibre gyro with light source self-checking function |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110388910A (en) * | 2018-04-19 | 2019-10-29 | 上海亨通光电科技有限公司 | A kind of optical fibre gyro with light source self-checking function |
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2018
- 2018-04-19 CN CN201820566910.XU patent/CN208171288U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110388910A (en) * | 2018-04-19 | 2019-10-29 | 上海亨通光电科技有限公司 | A kind of optical fibre gyro with light source self-checking function |
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| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 200436 No. 555 JIANGCHANG West Road, Jingan District, Shanghai Patentee after: Shanghai Aoshi Control Technology Co., Ltd Address before: 200436 No. 555 JIANGCHANG West Road, Jingan District, Shanghai Patentee before: SHANGHAI HENGTONG PHOTOELECTRIC TECHNOLOGY Co.,Ltd. |
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| CP01 | Change in the name or title of a patent holder |