CN103090881A - Galvanical solenoid for fiber optic gyroscope magnetic influence system - Google Patents
Galvanical solenoid for fiber optic gyroscope magnetic influence system Download PDFInfo
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- CN103090881A CN103090881A CN2012105712450A CN201210571245A CN103090881A CN 103090881 A CN103090881 A CN 103090881A CN 2012105712450 A CN2012105712450 A CN 2012105712450A CN 201210571245 A CN201210571245 A CN 201210571245A CN 103090881 A CN103090881 A CN 103090881A
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- fiber optic
- solenoid
- optic gyroscope
- optical fibre
- galvanical
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Abstract
The invention provides a device for measuring the influence of a magnetic field to a fiber optic gyroscope output signal, and the device is used for measuring the output change of a fiber optic gyroscope under different magnetic field environments. The device is provided with a fiber optic gyroscope, and is characterized in that the fiber optic gyroscope is arranged in two half sleeves in the axial direction or the radial direction, and the fiber optic gyroscope and the sleeves are embedded together in a galvanical solenoid externally wound with a coil. Based on the galvanical solenoid, the magnetic field direction is respectively parallel to three axial directions, and the size of the magnetic field of the galvanical solenoid is adjusted by changing the value of direct current; and data of the fiber optic gyroscope are collected by a special testing device, and the galvanical solenoid is used for analysis of the influence on the fiber optic gyroscope output signals under different magnetic fields.
Description
Technical field
The invention belongs to the electromagnetic system device field, be used for measuring magnetic field to the impact of Optical Fiber Gyroscope, also can be used for measuring magnetic field to the impact of accurate miniature instrument instrument output signal.
Background technology
Optical fibre gyro is a kind of novel inertia device, take the Sagnac effect of light as theoretical foundation, is used for measuring the angular speed of carrier.A kind of electromagnetic wave only, optical fibre gyro badly influences optical fibre gyroscope output accuracy in theory due to the fiber optic loop nonreciprocity phase drift (Fraday effect) that external magnetic field causes, and the output signal impact on high-precision optical fiber gyro is very large especially.So just require to set up magnetic field environment aspect through engineering approaches, Optical Fiber Gyroscope is analyzed, sought influence factor, the foundation of design improvement is provided.For this reason, a kind of magnetic field of measuring of invention is on the device of optical fibre gyro output impact.
Summary of the invention
Goal of the invention: provide a kind of magnetic field of measuring on the device of Optical Fiber Gyroscope impact, be used for measuring the variation of optical fibre gyro output under the different magnetic field environment.
Technical scheme: a kind of energization solenoid for optical fibre gyro magnetic influence system, have optical fibre gyro, it is characterized in that optical fibre gyro axially or radially be installed in two and half sleeves, and being embedded in together an outside and being wound with in the energization solenoid of coil.
The present invention designs an energization solenoid according to electromagnetic principle, and solenoid length is L, and radius is r, and the number of turn of unit length is n, as shown in Figure 1.Pass to constant DC current, change the size of DC current, can obtain uniform magnetic field very approximate in certain limit.
Optical fibre gyro must axially be tested along X, Y, three of Z, as shown in Figure 3 according to test request.Design a sleeve Fig. 1, formed by two semi-circular portions, optical fibre gyro be screwed axially (X, Y-axis), radially (Z axis) be arranged in sleeve, then be embedded in solenoid, make magnetic direction respectively with three axially parallels, as Fig. 3, Fig. 4, shown in Figure 5.Change the size of DC current, can regulate the size of solenoidal field.Gather data of optical fiber gyroscope by special test equipment, be used for to analyze under different magnetic field the impact on Optical Fiber Gyroscope, as shown in Figure 6.
The invention effect: it is simple that this measurement mechanism has a project organization, meets the characteristics of optical fibre gyro test request.Optical fibre gyro axially (X, Y-axis), radially (Z axis) easy for installation, line is convenient, easy operating has the high characteristics of accuracy of measurement.
Description of drawings
Fig. 1 is for being used for radially (X, Y-axis) or axially two and half tube-in-tube structure schematic diagram of (Z axis) installing optical fibres gyro.
Fig. 2 is energization solenoid device schematic diagram.
Fig. 3 is the optical fibre gyro schematic diagram.
Fig. 4 is the schematic diagram of axial (Z axis) installing optical fibres gyro.
Fig. 5 is the schematic diagram of (X, Y-axis) installing optical fibres gyro radially.
Fig. 6 is for using optical fibre gyro magnetic influence system and device schematic diagram of the present invention.
Embodiment
The mode that optical fibre gyro is fixed by screw axially (Z axis) or radially (X, Y-axis) be installed in two and half sleeves (as Fig. 1), then be embedded in (as Fig. 2) in energization solenoid, from the energization solenoid end face inwards, be respectively axially (Z axis) and radially (X, Y-axis) installation shown in Fig. 4,5.Optical fibre gyro axially or radially is installed in two and half sleeves, and is embedded in together an outside and is wound with in the energization solenoid of coil.Be provided with axial installation positioning seat in two and half sleeves of installing optical fibres gyro and positioning seat radially is installed.Described energization solenoid length L and radius r ratio close: r/L=0.1～0.2; And the size of r and L is simultaneously greater than tested optical fibre gyro full-size.N and r and L be without direct corresponding relation, only to the characteristic of its wire, relevant with the electric current that passes through.
The duty of this device as shown in Figure 6, wherein, 1, the energization solenoid of installing optical fibres gyro, be used for providing the environment of approximate uniform magnetic field; 2, constant current source is used for providing constant electric current, changes the size of energization solenoid electric current, reaches the effect of regulating the magnetic field size; 3, optical fibre gyro special test equipment is used for being captured in data of optical fiber gyroscope and exports and store; 4, display is used for showing optical fibre gyro output map spectrum information.
By connected mode shown in Figure 6, namely the coil two ends of constant current source both positive and negative polarity and energization solenoid are connected respectively, follow right-hand rule, the generation solenoid shaft to magnetic field.Optical fibre gyro is fixed in energization solenoid according to installation requirement, and the optical fibre gyro output interface is connected with special test equipment, and special test equipment is connected to display.Interface connect complete after, by controlling the constant current source DC current, regulate the magnetic field size, gather signal of fiber optical gyroscope at display output map spectrum information, record data are analyzed magnetic field to optical fibre gyro output impact.
Claims (3)
1. an energization solenoid that is used for optical fibre gyro magnetic influence system, have optical fibre gyro, it is characterized in that optical fibre gyro axially or radially be installed in two and half sleeves, and being embedded in together an outside and being wound with in the energization solenoid of coil.
2. a kind of energization solenoid for optical fibre gyro magnetic influence system according to claim 1 is characterized in that described energization solenoid length L and radius r ratio close and is: r/L=0.1～0.2; And the size of r and L is simultaneously greater than tested optical fibre gyro full-size.
3. a kind of energization solenoid for optical fibre gyro magnetic influence system according to claim 1 is characterized in that being provided with axial installation positioning seat and positioning seat radially being installed in two and half sleeves of installing optical fibres gyro.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012105712450A CN103090881A (en) | 2012-12-25 | 2012-12-25 | Galvanical solenoid for fiber optic gyroscope magnetic influence system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012105712450A CN103090881A (en) | 2012-12-25 | 2012-12-25 | Galvanical solenoid for fiber optic gyroscope magnetic influence system |
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| CN103090881A true CN103090881A (en) | 2013-05-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2012105712450A Pending CN103090881A (en) | 2012-12-25 | 2012-12-25 | Galvanical solenoid for fiber optic gyroscope magnetic influence system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110501419A (en) * | 2019-07-18 | 2019-11-26 | 江苏大学 | A kind of acoustic measurement system of the axially adjustable uniform magnetic field loading device of band |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101285690A (en) * | 2008-05-26 | 2008-10-15 | 浙江大学 | Optical fibre gyroscope magnetic field-temperature sensitivity test method |
| CN101769761A (en) * | 2010-01-29 | 2010-07-07 | 浙江大学 | Device for testing radial magnetic field sensitivity of fiber optic gyro |
| CN101922942A (en) * | 2010-07-16 | 2010-12-22 | 浙江大学 | Compensation method for axial magnetic field sensitivity of fiber optic gyro |
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2012
- 2012-12-25 CN CN2012105712450A patent/CN103090881A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101285690A (en) * | 2008-05-26 | 2008-10-15 | 浙江大学 | Optical fibre gyroscope magnetic field-temperature sensitivity test method |
| CN101769761A (en) * | 2010-01-29 | 2010-07-07 | 浙江大学 | Device for testing radial magnetic field sensitivity of fiber optic gyro |
| CN101922942A (en) * | 2010-07-16 | 2010-12-22 | 浙江大学 | Compensation method for axial magnetic field sensitivity of fiber optic gyro |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110501419A (en) * | 2019-07-18 | 2019-11-26 | 江苏大学 | A kind of acoustic measurement system of the axially adjustable uniform magnetic field loading device of band |
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Application publication date: 20130508 |