CN112484964A - Device and method for measuring optical path loss of optical fiber gyroscope - Google Patents
Device and method for measuring optical path loss of optical fiber gyroscope Download PDFInfo
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- CN112484964A CN112484964A CN202011290970.1A CN202011290970A CN112484964A CN 112484964 A CN112484964 A CN 112484964A CN 202011290970 A CN202011290970 A CN 202011290970A CN 112484964 A CN112484964 A CN 112484964A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M11/00—Testing of optical apparatus; Testing structures by optical methods not otherwise provided for
- G01M11/30—Testing of optical devices, constituted by fibre optics or optical waveguides
- G01M11/33—Testing of optical devices, constituted by fibre optics or optical waveguides with a light emitter being disposed at one fibre or waveguide end-face, and a light receiver at the other end-face
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C25/00—Manufacturing, calibrating, cleaning, or repairing instruments or devices referred to in the other groups of this subclass
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Abstract
A device for measuring optical path loss of an optical fiber gyroscope comprises a case, a transformer, a light source plate, a digital display voltmeter and a digital display ammeter; the transformer, the light source plate, the digital display voltmeter and the digital display ammeter are all arranged in the case, and the IC locking seat and the socket connector are arranged on a side cover of the case; one end of the transformer is connected with an external power supply, the other end of the transformer is divided into two paths, one path is connected with the IC locking seat, and the other path is sequentially connected with the light source plate, the digital display ammeter and the socket connector socket; the digital display voltmeter is connected in parallel on the IC locking seat; the gyroscope to be tested is arranged outside the case. The measurement efficiency of the invention is far higher than that of the traditional optical path measurement method, and is improved by more than eight times; the invention does not touch the light path, thereby avoiding introducing artificial interference; the invention avoids neglect of insertion loss in the traditional optical path measurement method, and has higher accuracy.
Description
Technical Field
The invention relates to the technical field of optical detection, in particular to a device and a method for measuring optical path loss of an optical fiber gyroscope.
Background
At present, after optical path assembly is completed, each optical component is extremely easily influenced by manual assembly links and external environments, so that the performance of the whole optical fiber gyroscope is influenced, and the qualification rate of the optical path assembly of the whole optical fiber gyroscope can be effectively controlled by measuring the optical path loss after the optical path assembly.
The method for measuring the performance of the optical path at the present stage is less, mainly includes that before a detector is assembled on the optical path, when a light source normally works, an optical power tester is used for measuring the optical power output by the optical path at the end of an optical fiber to be welded with the detector, then the optical power of the light source is inquired, and the optical path loss is calculated in a mode of a formula alpha being-10 lg (Pout/Pin).
Disclosure of Invention
The present invention is directed to a device and a method for measuring optical path loss of an optical fiber gyroscope, so as to solve the above problems.
In order to achieve the purpose, the invention adopts the following technical scheme:
a device for measuring optical path loss of an optical fiber gyroscope comprises a case, a transformer, a light source plate, a digital display voltmeter and a digital display ammeter; the transformer, the light source plate, the digital display voltmeter and the digital display ammeter are all arranged in the case, and the IC locking seat and the socket connector are arranged on a side cover of the case; one end of the transformer is connected with an external power supply, the other end of the transformer is divided into two paths, one path is connected with the IC locking seat, and the other path is sequentially connected with the light source plate, the digital display ammeter and the socket connector socket; the digital display voltmeter is connected in parallel on the IC locking seat; the gyroscope to be tested is arranged outside the case.
Further, the light source plate comprises a driving module, a temperature control module and a speed-regulating potentiometer; the other branch of the transformer is divided into two branches, one branch is connected with a speed-regulating potentiometer, a driving module and a digital display ammeter in sequence, the other branch is connected with a temperature control module, and the two branches are connected with a socket connector socket.
Further, the speed-regulating potentiometer is connected in series with a switch; the number of the light source plates is three, and each light source plate corresponds to one digital display ammeter; the three digital display voltmeter and the three digital display ammeter are arranged on the case shell side by side; and a switch is arranged on the case at the side surface of each digital display voltmeter, and a speed-regulating potentiometer is arranged on the case at the side surface of each digital display ammeter.
Further, the transformer is connected with a switch in series; the branch circuit connected with the light source board is connected with a heat radiation fan in parallel, and the heat radiation fan is positioned on the chassis shell.
Further, the IC locking seat is arranged below the socket of the connector; the socket connector is used as a light source socket, and the IC locking seat is used as a detector socket.
Furthermore, the bottom of the case is provided with rubber supporting legs.
Further, a method for measuring an optical path loss of an optical fiber gyroscope includes the following steps:
step 1, before a light path test is carried out, welding a connector plug on a pin of a light source of a fiber optic gyroscope to be tested;
Compared with the prior art, the invention has the following technical effects:
according to the invention, 220V alternating current is converted into +/-5V direct current for power supply through a transformer, one path of +5V supplies power to a light source board to provide light source working conditions, the other path of the +5V supplies power to ensure that a detector works normally, the other path of the +5V is used as power supply of a cooling fan of the instrument to ensure that each device and each chip can work in a proper environment, a digital display voltmeter is used for testing the voltage difference of pins of the detector, voltage values before and after the switch is switched on are respectively recorded, Vn is recorded before the switch is switched on, V is recorded after the switch is switched on, and the optical path loss of the optical fiber gyroscope is obtained through calculation. The device can simultaneously measure the optical path loss of a plurality of axial or single-axis optical fiber gyroscopes of the optical fiber gyroscopes;
the measurement efficiency of the invention is far higher than that of the traditional optical path measurement method, and is improved by more than eight times;
the invention does not touch the light path, thereby avoiding introducing artificial interference;
the invention avoids the neglect of insertion loss in the traditional optical path measurement method, and has higher accuracy;
the invention has small operation difficulty, and operators do not need optical fiber process operation training.
Drawings
FIG. 1 is a schematic circuit diagram of the design instrument of the present invention;
FIG. 2 is a front view of the structure of the apparatus of the present invention;
FIG. 3 is the top view of the instrument structure.
Detailed Description
The invention is further described below with reference to the accompanying drawings:
the utility model provides a measure device and measuring method of fiber gyroscope light path loss, as shown in figure 1, turn into 5V direct current power supply with 220V alternating current through transformer 2, +5V supplies power to light source board 3 all the way, in order to provide light source operating condition, output 5V power supply all the way and guarantee detector normal work, 5V is as the power supply of radiator fan 9 of this instrument all the way, ensure each device, the chip can work under suitable environment, use digital display voltmeter 7 to test detector 4, 5 pin voltage differences, respectively record the voltage value before and after switch 5 switches on, the record is made Vn before the switch on, the record is made V after the switch on, obtain the light path loss of this fiber gyroscope through calculating.
As shown in fig. 2, the apparatus for measuring optical path loss of an optical fiber gyroscope of the present invention includes a chassis 1, a transformer 2, a light source plate 3, a main switch 4, a switch 5, a speed-adjusting potentiometer 6, a digital display voltmeter 7, and a digital display ammeter 8, wherein the transformer 2 and the light source plate 3 are disposed inside the chassis 1 and fixed by screws, and the digital display voltmeter 7, the digital display ammeter 8, the speed-adjusting displacement device 6, and the switch 5 are mounted on a front panel of the chassis 1.
The instrument further comprises a radiating fan 9 powered by +/-5V, wherein the radiating fan 9 is positioned on the rear side of the case 1 and used for reducing the temperature inside the case 1 and ensuring the sensitivity of a measuring device.
Height-adjustable's rubber support socle 12 is selected for use to this instrument, can make the regional height of controlling more accord with the in-service use requirement, and the rubber support pad of bottom can also play jar-proof effect.
The instrument adopts the IC locking seat 10 as a detector socket, so that the detector can be conveniently inserted, the damage of devices caused by wrong insertion can be avoided, the testing efficiency is improved, and the possibility of misoperation is reduced.
The socket connector 11 is adopted as a light source socket, so that repeated disassembly of an installed light source is avoided, the damage of tail fibers caused in the process of moving or assembling the light source for many times is reduced, and the possibility of damage of devices is reduced.
The IC locking seat 10 is arranged below the socket 11 of the connector, so that tail fibers of the detector can naturally stretch and droop after the detector is plugged, and the problems that optical fibers are broken when a light source interface is plugged and the reading is inaccurate due to the fact that the optical fibers are bent are solved.
Adopt light source plate 3 to replace drive plate and temperature control plate, can make the inner space more loose, be favorable to the device heat dissipation, the light source plate contains temperature control module and drive module again simultaneously, possesses relevant function, can reduce unnecessary the line of walking, makes the internal wiring more reasonable, pleasing to the eye.
The instrument is provided with three light source plates 3 and three groups of digital display voltmeters 7 and digital display ammeters 8, so that the instrument can simultaneously measure the voltage and current values of three axial or three single-axis fiber gyroscopes of the fiber gyroscopes, and the working efficiency is improved.
The instrument can realize the adjustment of the magnitude of the light source driving current by controlling the speed regulation potentiometer 6 and observing the digital display current meter 8, and simultaneously, the measurement of the output voltage value of the assembled light path detector under different driving currents is also met.
Before the optical path test is carried out, a connector plug is welded on a light source pin of the optical fiber gyroscope to be tested, during the test, the optical fiber gyroscope assembled by the optical path is placed on a desktop, a detector is inserted into an IC locking seat 10, after tail fibers are arranged, the welded connector plug is butted with a connector socket 11, a main switch 4 is opened, the numerical value at the moment is read from a digital display voltmeter 7 and recorded as Vn, then a switch 5 is opened, the numerical value on the digital display ammeter 8 is adjusted to 100 through a speed-adjusting potentiometer 6, the numerical value on the digital display voltmeter 7 at the moment is read and recorded as V, if the output voltage value of the detector at different driving currents needs to be measured, only a knob of a speed-adjusting position changer 6 needs to be adjusted to a proper position, the rotation is stopped until the numerical value of the digital display ammeter is the required numerical value, the numerical value on the digital display voltmeter 7 at the moment is read, and after the test is finished, the speed, and adjusting the numerical value on the digital display ammeter 8 to be 100, closing the switch 5 and the main switch 4 in sequence, and taking down the butted device from the instrument.
Looking up the detection record of the component, and recording the responsivity of the detector and the optical power of the light source; calculating the optical path loss of the assembled optical path at the moment by a formula alpha-10 log [ (V-Vn)/S/Pin) ], wherein Pin is the optical power of the light source, S is the responsivity of the detector, V and Vn measured by the instrument are substituted, comparing the alpha value with the calculated theoretical maximum value, if the alpha value is smaller than the theoretical maximum value, the optical path of the optical fiber gyroscope is assembled to be qualified, otherwise, the optical path is assembled to be unqualified.
The instrument can reduce the welding times of optical fibers in optical path testing, can measure the optical path loss value of a complete optical path, can also perform three-axis data measurement simultaneously, is simple to operate, improves the working efficiency of optical path assembly, provides a reference basis for quality inspection of optical path assembly, and improves the qualification rate of optical path assembly of the optical fiber gyroscope.
Claims (7)
1. A device for measuring optical path loss of an optical fiber gyroscope is characterized by comprising a case (1), a transformer (2), a light source board (3), a digital display voltmeter (7) and a digital display ammeter (8); the transformer (2), the light source plate (3), the digital display voltmeter (7) and the digital display ammeter (8) are all arranged inside the case (1), and the IC locking seat (10) and the connector socket (11) are arranged on a side cover of the case; one end of the transformer (2) is connected with an external power supply, the other end of the transformer (2) is divided into two paths, one path is connected with the IC locking seat (10), and the other path is sequentially connected with the light source plate (3), the digital display ammeter (8) and the socket connector socket (11); the digital display voltmeter (7) is connected in parallel on the IC locking seat (10); the gyroscope to be tested is arranged outside the case.
2. The apparatus for measuring optical path loss of an optical fiber gyroscope according to claim 1, wherein the light source board (3) comprises a driving module, a temperature control module and a speed-regulating potentiometer (6); the other branch of the transformer (2) is divided into two branches, one branch is connected with a speed-regulating potentiometer (6), a driving module and a digital display ammeter (8) in sequence, the other branch is connected with a temperature control module, and the two branches are connected with a connector socket (11).
3. The apparatus for measuring optical path loss of an optical fiber gyroscope according to claim 2, wherein the speed-adjusting potentiometer (6) is connected in series with a switch (5); the number of the light source plates (3) is three, and each light source plate (3) corresponds to one digital display ammeter (8); the three digital display voltmeters (7) and the three digital display ammeters (8) are arranged on the shell of the case (1) side by side; and a switch (5) is arranged on the case at the side of each digital display voltmeter (7), and a speed regulation potentiometer (6) is arranged on the case at the side of each digital display ammeter (8).
4. The apparatus for measuring optical path loss of an optical fiber gyro according to claim 1, wherein the transformer (2) is connected in series with a main switch (4); a branch circuit connected with the light source plate (3) is connected with a heat radiation fan (9) in parallel, and the heat radiation fan (9) is positioned on the chassis shell.
5. The apparatus for measuring optical path loss of an optical fiber gyro according to claim 1, wherein the IC locking socket (10) is installed below the connector socket (11); the connector socket (11) is used as a light source socket, and the IC locking seat (10) is used as a detector socket.
6. The apparatus for measuring optical path loss of an optical fiber gyroscope according to claim 1, wherein the bottom of the housing is provided with rubber support legs (12).
7. A method for measuring an optical loss of an apparatus for measuring an optical loss of an optical fiber gyro according to any one of claims (1) to (6), comprising the steps of:
step 1, before a light path test is carried out, welding a connector plug on a pin of a light source of a fiber optic gyroscope to be tested;
step 2, during testing, inserting the detector into the IC locking seat, arranging tail fibers, and butting the welded connector plug with the connector socket;
step 3, opening a main switch (4), reading the numerical value at the moment from the digital display voltmeter, recording the numerical value as Vn, then opening a switch (5), adjusting the numerical value on the digital display ammeter (8) to 100 through a speed-adjusting potentiometer (6), reading the numerical value on the digital display voltmeter (7) at the moment, and recording the numerical value as V;
step 4, if the output voltage values of the detector at different driving currents need to be measured, the speed-regulating position changer (6) is adjusted by a knob until the numerical value of the digital display ammeter is the required numerical value, the rotation is stopped, the numerical value on the digital display voltmeter (7) at the moment is read, after the test is finished, the numerical value on the digital display ammeter (8) is regulated to 100 by controlling the speed-regulating position changer (6), the switch (5) and the main switch (4) are closed in sequence, and the butted device is taken down from the instrument;
step 5, looking up the detection record of the components and recording the responsivity of the detector and the optical power of the light source; and calculating the optical path loss of the assembled optical path at the moment by a formula alpha-10 log [ (V-Vn)/S/Pin) ], wherein Pin is the optical power of the light source, S is the responsivity of the detector, the measured V and Vn are substituted, the alpha value is compared with the calculated theoretical maximum value, if the alpha value is smaller than the theoretical maximum value, the optical path of the optical fiber gyroscope is assembled to be qualified, otherwise, the optical path is assembled to be unqualified.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011290970.1A CN112484964A (en) | 2020-11-17 | 2020-11-17 | Device and method for measuring optical path loss of optical fiber gyroscope |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011290970.1A CN112484964A (en) | 2020-11-17 | 2020-11-17 | Device and method for measuring optical path loss of optical fiber gyroscope |
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| CN112484964A true CN112484964A (en) | 2021-03-12 |
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| CN202011290970.1A Pending CN112484964A (en) | 2020-11-17 | 2020-11-17 | Device and method for measuring optical path loss of optical fiber gyroscope |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204008074U (en) * | 2014-08-20 | 2014-12-10 | 武汉光驰科技有限公司 | Photodetector feature measurement experimental provision |
| CN106411399A (en) * | 2016-08-31 | 2017-02-15 | 武汉光迅科技股份有限公司 | Method and device for automatically testing optical loss of dual-parallel MZI-type electro-optical modulator |
| CN106596075A (en) * | 2016-12-29 | 2017-04-26 | 北京航天时代光电科技有限公司 | Interferometer assembling quality detection system |
| CN206832358U (en) * | 2017-06-19 | 2018-01-02 | 奇华光电（昆山）股份有限公司 | A kind of EL mechanism for testing |
| CN107869997A (en) * | 2016-09-27 | 2018-04-03 | 北京计算机技术及应用研究所 | Light path commissioning device for optical fibre gyro |
| CN109059962A (en) * | 2018-08-29 | 2018-12-21 | 北京航天时代光电科技有限公司 | A kind of optical fibre gyro optical path Performance Test System |
| CN110132545A (en) * | 2019-05-05 | 2019-08-16 | 朱世国 | A kind of method of substitution fibre loss characteristic test test macro and method |
-
2020
- 2020-11-17 CN CN202011290970.1A patent/CN112484964A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204008074U (en) * | 2014-08-20 | 2014-12-10 | 武汉光驰科技有限公司 | Photodetector feature measurement experimental provision |
| CN106411399A (en) * | 2016-08-31 | 2017-02-15 | 武汉光迅科技股份有限公司 | Method and device for automatically testing optical loss of dual-parallel MZI-type electro-optical modulator |
| CN106411399B (en) * | 2016-08-31 | 2019-02-19 | 武汉光迅科技股份有限公司 | The automatic test approach and device of two-in-parallel MZI type electrooptic modulator optical loss |
| CN107869997A (en) * | 2016-09-27 | 2018-04-03 | 北京计算机技术及应用研究所 | Light path commissioning device for optical fibre gyro |
| CN106596075A (en) * | 2016-12-29 | 2017-04-26 | 北京航天时代光电科技有限公司 | Interferometer assembling quality detection system |
| CN206832358U (en) * | 2017-06-19 | 2018-01-02 | 奇华光电（昆山）股份有限公司 | A kind of EL mechanism for testing |
| CN109059962A (en) * | 2018-08-29 | 2018-12-21 | 北京航天时代光电科技有限公司 | A kind of optical fibre gyro optical path Performance Test System |
| CN110132545A (en) * | 2019-05-05 | 2019-08-16 | 朱世国 | A kind of method of substitution fibre loss characteristic test test macro and method |
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Application publication date: 20210312 |
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