CN208171287U - A kind of small Twin-shaft optical fibre gyro based on binary channels design - Google Patents
A kind of small Twin-shaft optical fibre gyro based on binary channels design Download PDFInfo
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- CN208171287U CN208171287U CN201820460671.XU CN201820460671U CN208171287U CN 208171287 U CN208171287 U CN 208171287U CN 201820460671 U CN201820460671 U CN 201820460671U CN 208171287 U CN208171287 U CN 208171287U
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Abstract
The utility model relates to a kind of small Twin-shaft optical fibre gyros based on binary channels design, including light path part and circuit part, the light path part includes two parallel channels, the circuit part includes light source board (1) and detecting plate (20), the detecting plate (20) is equipped with sequentially connected double channel A/D converter (14), FPGA signal processor (15) and binary channels D/A converter (16), the light that the light source board (1) issues is after light path part, the signal in two channels enters double channel A/D converter (14), FPGA signal processor (15) exports calculated result, and control signal is passed through into two channels of binary channels D/A converter (16) return.Compared with prior art, the utility model uses double channel A/D and binary channels DA chip, saves circuit board cloth plate suqare.The Miniaturization Design for realizing twin shaft gyro, has the advantages that small in size, low in energy consumption.
Description
Technical field
The utility model relates to a kind of double-shaft optical fiber gyroscopes, more particularly, to a kind of small Twin-shaft based on binary channels design
Optical fibre gyro.
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.It can be applied to the various fields in sea, land and air day.Dual spindle gyroscopes can measure
The angular speed of two dimensions.Traditional double-shaft optical fiber gyroscope generally uses two A/D chips, two DA chips.This results in circuit board
Cloth plate suqare increase, and cannot achieve miniaturization.Optical fibre gyro application field to the volume power consumption requirements of optical fibre gyro very
Harshness, and it is badly in need of a kind of small size, the double-shaft optical fiber gyroscope instrument of low-power consumption.Existing double-shaft optical fiber gyroscope is unable to satisfy to use and need
It asks.
Utility model content
The purpose of this utility model is exactly to provide a kind of based on bilateral to overcome the problems of the above-mentioned prior art
The small Twin-shaft optical fibre gyro of road design.
The purpose of this utility model can be achieved through the following technical solutions：
A kind of small Twin-shaft optical fibre gyro based on binary channels design, including light path part and circuit part, the light
Road part includes two parallel channels, and the circuit part includes light source board and detecting plate, and the detecting plate is equipped with
Sequentially connected double channel A/D converter, FPGA signal processor and binary channels D/A converter, the light that the light source board issues
After light path part, the signal in two channels enters double channel A/D converter, and FPGA signal processor exports calculated result, and
Control signal is passed through into two channels of binary channels D/A converter return.
The light path part includes total coupler and two channels, and first channel includes the first coupler, the first Y wave
It leads, the first fiber optic loop and the first detector, light sequentially enters the first coupler and the first Y waveguide by the shunting of total coupler,
Then it turns back in the first fiber optic loop, the first detector is successively back to by the first Y waveguide and the first coupler, subsequently into spy
Drafting board, second channel are identical as first channel design.
The light path part further includes super-radiance light emitting diode, and the super-radiance light emitting diode is arranged in light source
Between plate and total coupler.
The double channel A/D converter front end is even there are two preamplifier, two preamplifiers and two
Detector on channel is correspondingly connected with.
The binary channels D/A converter rear end is even there are two post amplifier, two post amplifiers and two
Y waveguide on channel is correspondingly connected with.
The double channel A/D converter is the AD9231 chip of ADI company.
The binary channels D/A converter is the AD9717 chip of ADI company.
Compared with prior art, the utility model uses double channel A/D and binary channels DA chip, saves circuit board cloth plate face
Product.Realize the Miniaturization Design of twin shaft gyro.With advantage small in size, low in energy consumption；It is arranged between light source board and total coupler
Super-radiance light emitting diode, output power is high, the angle of divergence is small, improves coupling efficiency and response speed.
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
As shown in Figure 1, a kind of small Twin-shaft optical fibre gyro based on binary channels design, including light path part and circuit portion
Point, light path part includes two parallel channels, and circuit part includes light source board 1 and detecting plate 20, detecting plate 20 be equipped with according to
Double channel A/D converter 14, FPGA signal processor 15 and the binary channels D/A converter 16 of secondary connection, the light warp that light source board 1 issues
After crossing light path part, the signal in two channels enters double channel A/D converter 14, and FPGA signal processor 15 exports calculated result,
And control signal is passed through into two channels of the return of binary channels D/A converter 16.
Light path part includes super-radiance light emitting diode 2 (SLD, Superluminescent diode), 3 and of total coupler
Two channels, first channel include the first coupler 4, the first Y waveguide 5, the first fiber optic loop 6 and the first detector 10, light source
The light that plate 1 issues sequentially enters the first coupler 4 and the first Y waveguide 5 by the shunting of total coupler 3, then in the first optical fiber
It turns back in ring 6, the first detector 10 is successively back to by the first Y waveguide 5 and the first coupler 4, subsequently into detecting plate 20；The
Two channels include the second coupler 7, the second Y waveguide 8, the second fiber optic loop 9 and the second detector 12, and light passes through total coupler
3 shuntings sequentially enter the second coupler 7 and the second Y waveguide 8, then turn back in the second fiber optic loop 9, successively by the second Y waveguide 8
It is back to the second detector 12 with the second coupler 7, subsequently into detecting plate 20.
On detecting plate 20,14 front end of double channel A/D converter is connected with the first preamplifier 11 and the second preamplifier
13, two preamplifiers are correspondingly connected with the detector on two channels；After 16 rear end of binary channels D/A converter is connected with first
Amplifier 17 and the second post amplifier 18 are set, two post amplifiers are correspondingly connected with the Y waveguide on two channels, FPGA letter
The signal of number processor 15 is exported by interface circuit 19.
Double channel A/D converter 14 is the AD9231 chip of ADI company, it is 12,20M/40M/65M sampling rate,
1.8V power supply double-channel analog/digital converter.With excellent characteristic, extremely low power consumption.
Binary channels D/A converter 16 is the AD9717 chip of ADI company, it is 14, low-power consumption, two-channel digital simulation
Converter.Renewal rate is up to 125MHz, only 86mW.And encapsulation volume only has 6mm*6mm.It is empty 1 times of circuit board has been saved
Between area.
Claims (7)
1. a kind of small Twin-shaft optical fibre gyro based on binary channels design, including light path part and circuit part, the optical path
Part includes two parallel channels, and the circuit part includes light source board (1) and detecting plate (20), which is characterized in that institute
The detecting plate (20) stated is equipped with sequentially connected double channel A/D converter (14), FPGA signal processor (15) and binary channels DA
Converter (16), after light path part, the signal in two channels enters double channel A/D and turns the light that the light source board (1) issues
Parallel operation (14), FPGA signal processor (15) exports calculated result, and control signal is returned by binary channels D/A converter (16)
Go back to two channels.
2. a kind of small Twin-shaft optical fibre gyro based on binary channels design according to claim 1, which is characterized in that described
Light path part include total coupler (3) and two channels, first channel include the first coupler (4), the first Y waveguide (5),
First fiber optic loop (6) and the first detector (10), light by total coupler (3) shunt sequentially enter the first coupler (4) and
First Y waveguide (5) is then turned back in the first fiber optic loop (6), is successively returned by the first Y waveguide (5) and the first coupler (4)
To the first detector (10), subsequently into detecting plate (20), second channel is identical as first channel design.
3. a kind of small Twin-shaft optical fibre gyro based on binary channels design according to claim 2, which is characterized in that described
Light path part further include super-radiance light emitting diode (2), the super-radiance light emitting diode (2) is arranged in light source board (1)
Between total coupler (3).
4. a kind of small Twin-shaft optical fibre gyro based on binary channels design according to claim 2, which is characterized in that described
Double channel A/D converter (14) front end even there are two preamplifier, on two preamplifiers and two channels
Detector is correspondingly connected with.
5. a kind of small Twin-shaft optical fibre gyro based on binary channels design according to claim 2, which is characterized in that described
Binary channels D/A converter (16) rear end even there are two post amplifier, on two post amplifiers and two channels
Y waveguide is correspondingly connected with.
6. a kind of small Twin-shaft optical fibre gyro based on binary channels design according to claim 1, which is characterized in that described
Double channel A/D converter (14) be ADI company AD9231 chip.
7. a kind of small Twin-shaft optical fibre gyro based on binary channels design according to claim 1, which is characterized in that described
Binary channels D/A converter (16) be ADI company AD9717 chip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820460671.XU CN208171287U (en) | 2018-03-30 | 2018-03-30 | A kind of small Twin-shaft optical fibre gyro based on binary channels design |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820460671.XU CN208171287U (en) | 2018-03-30 | 2018-03-30 | A kind of small Twin-shaft optical fibre gyro based on binary channels design |
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| CN208171287U true CN208171287U (en) | 2018-11-30 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110319825A (en) * | 2018-03-30 | 2019-10-11 | 上海亨通光电科技有限公司 | A kind of small Twin-shaft optical fibre gyro based on binary channels design |
| CN110440786A (en) * | 2019-08-09 | 2019-11-12 | 浙江大学 | Single light source double-shaft optical fiber gyroscope instrument and its twin shaft electric signal demodulation method |
-
2018
- 2018-03-30 CN CN201820460671.XU patent/CN208171287U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110319825A (en) * | 2018-03-30 | 2019-10-11 | 上海亨通光电科技有限公司 | A kind of small Twin-shaft optical fibre gyro based on binary channels design |
| CN110440786A (en) * | 2019-08-09 | 2019-11-12 | 浙江大学 | Single light source double-shaft optical fiber gyroscope instrument and its twin shaft electric signal demodulation method |
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| 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 |