CN210603346U - Rapid filtering device based on fiber bragg grating dynamic detection system - Google Patents
Rapid filtering device based on fiber bragg grating dynamic detection system Download PDFInfo
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- CN210603346U CN210603346U CN201922148103.3U CN201922148103U CN210603346U CN 210603346 U CN210603346 U CN 210603346U CN 201922148103 U CN201922148103 U CN 201922148103U CN 210603346 U CN210603346 U CN 210603346U
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- speed reduction
- stepping motor
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- detection system
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Abstract
The utility model relates to an optical fiber detection technical field, a quick filter based on fiber grating dynamic verification system, it is including supporting the base, left baffle, right baffle, miniature speed reduction step motor controller, the lead screw, optical axis and slider, miniature speed reduction step motor is connected with miniature speed reduction step motor controller electricity, from left side to right side according to preface fixed mounting has miniature speed reduction step motor on supporting the base, left baffle and right baffle, fixed mounting has according to the preface to pass left baffle and right baffle and can be along with miniature speed reduction step motor's power output shaft pivoted lead screw on miniature speed reduction step motor's power output shaft. The utility model discloses rational in infrastructure, convenient to use adjusts miniature speed reduction step motor's slew velocity and turned angle through miniature speed reduction step motor controller to carry out accurate control to slider displacement. The method has the advantages of high adjustment precision, small return error, simple operation and high working efficiency.
Description
Technical Field
The utility model relates to an optical fiber detection technical field is a light is based on fiber grating dynamic detection system's quick filter.
Background
The optical fiber detection is developed by utilizing the wavelength property of the optical fiber Bragg grating and the characteristic because the optical fiber Bragg grating is sensitive to the reaction of temperature and stress. The fiber grating is a spatial phase grating formed by the interaction of written photons and doped particles in the fiber core of an optical fiber to cause the axial periodic or aperiodic modulation of the refractive index through a special process processing by an external laser such as an ultraviolet laser and the like based on the special photosensitive characteristic of a doped fiber. The fiber grating sensor is one of the most rapidly developed and widely applied fiber passive devices in recent years, has the advantages of simple structure, good reliability, corrosion resistance, strong anti-electromagnetic interference capability, strong multiplexing capability and the like compared with the traditional electric signal sensor, can form a sensing network with various connection modes, and realizes large-area and multi-point measurement and the like.
When the fiber grating is used for detection, the used fiber grating is calibrated, but the central wavelength of the calibrated fiber grating is within a certain range, so that when the fiber grating is used for detection, the broadband wavelength in the light source needs to be filtered to be close to the central wavelength of the fiber grating. The adjusting method comprises the following steps: 1. the fiber grating sensor is adhered to the piezoelectric ceramic, and when the working voltage acts on the piezoelectric ceramic, the fiber grating sensor generates mechanical deformation along with the change of the voltage and the frequency to stretch and compress the fiber grating, so that the broadband wavelength of the fiber grating is adjusted to be near the central wavelength of the fiber grating. However, the method has the defects of complex control system, small adjustment range and high cost. 2. The fixed point stretching method is characterized in that the fiber grating sensor is fixed on fiber clamps at two ends of a displacement table, the distance between the two clamps is measured, and the broadband wavelength of the fiber grating is adjusted to be near the central wavelength of the fiber grating by adjusting the displacement of the displacement table. The displacement is generally adjusted manually, so that the efficiency is low and the adjustment precision is low.
Disclosure of Invention
The utility model provides a quick filter based on fiber grating dynamic verification system has overcome above-mentioned prior art not enough, and it can effectively be solved near the broadband wavelength filtering in the light source to fiber grating center wavelength inefficiency, the low problem of regulation precision.
The technical scheme of the utility model is realized through following measure: a rapid filtering device based on a fiber bragg grating dynamic detection system comprises a supporting base, a left baffle, a right baffle, a miniature speed reduction stepping motor controller, a screw rod, an optical axis and a slide block, wherein the miniature speed reduction stepping motor is electrically connected with the miniature speed reduction stepping motor controller, a miniature speed reduction stepping motor, a left baffle plate and a right baffle plate are fixedly arranged on the supporting base from left to right in sequence, a screw rod which sequentially passes through the left baffle and the right baffle and can rotate along with the power output shaft of the miniature speed reduction stepping motor is fixedly arranged on the power output shaft of the miniature speed reduction stepping motor, the lead screw between the left baffle and the right baffle is provided with a slide block through threads, an optical axis is fixedly arranged between the left baffle and the right baffle, the slide block is provided with a through hole, the slide block is sleeved on the optical axis through the through hole, and the slide block and the right baffle are provided with grooves which can fix the fiber bragg grating sensor and correspond to each other left and right.
The following are further optimization or/and improvement of the technical scheme of the utility model:
the power output shaft of the miniature speed reduction stepping motor is connected with the screw rod through a coupler.
The screw rod is connected with the left baffle and the right baffle through the deep groove ball bearing.
The miniature speed reduction stepping motor is fixedly arranged on the supporting base through a stepping motor flange sheet.
The right baffle plate corresponding to the right end of the screw rod is provided with a boss, and the boss is provided with a threaded hole corresponding to the right end of the screw rod.
The lead screw adopts a ball screw.
The utility model discloses rational in infrastructure, convenient to use adjusts miniature speed reduction step motor's slew velocity and turned angle through miniature speed reduction step motor controller to carry out accurate control to slider displacement. Compare in above-mentioned piezoceramics and fixed point stretching method, the utility model has the advantages of the adjustment accuracy is high, and the return stroke error is little, easy operation, work efficiency are high.
Drawings
Fig. 1 is a schematic perspective view of the present invention.
Fig. 2 is a schematic front view of the controller of the present invention.
The codes in the figures are respectively: the device comprises a support base 1, a left baffle 2, a right baffle 3, a miniature speed reduction stepping motor 4, a miniature speed reduction stepping motor controller 5, a lead screw 6, an optical shaft 7, a sliding block 8, a coupler 9, a deep groove ball bearing 10, a motor flange 11, a boss 12, a fiber grating sensor 13, a threaded hole 14 and a driving plate 15.
Detailed Description
The utility model discloses do not receive the restriction of following embodiment, can be according to the utility model discloses a technical scheme and actual conditions determine concrete implementation.
In the present invention, for convenience of description, the description of the relative position relationship of the components is described according to the layout mode of the attached drawing 1 in the specification, such as: the positional relationship of the upper, lower, etc. is determined in accordance with the layout direction of fig. 1 of the specification.
The invention will be further described with reference to the following examples and drawings:
the technical scheme of the utility model is realized through following measure: as shown in attached figures 1 and 2, the rapid filtering device based on the fiber bragg grating dynamic detection system comprises a supporting base 1, a left baffle plate 2, a right baffle plate 3, a miniature speed-reducing stepping motor 4, a miniature speed-reducing stepping motor controller 5, a screw rod 6, an optical axis 7 and a sliding block 8, wherein the miniature speed-reducing stepping motor 4 is electrically connected with the miniature speed-reducing stepping motor controller 5, the miniature speed-reducing stepping motor 4, the left baffle plate 2 and the right baffle plate 3 are fixedly installed on the supporting base 1 from left to right in sequence, the screw rod 6 which sequentially penetrates through the left baffle plate 2 and the right baffle plate 3 and can rotate along with a power output shaft of the miniature speed-reducing stepping motor 4 is fixedly installed on a power output shaft of the miniature speed-reducing stepping motor 4, the sliding block 8 is installed on the screw rod 6 between the left baffle plate 2 and the right baffle plate 3 through threads, the optical axis 7 is fixedly installed between the left baffle plate 2 and, the slider 8 is sleeved on the optical axis 7 through a through hole, and left and right corresponding grooves capable of fixing the fiber grating sensor 14 are formed in the slider 8 and the right baffle 3. During operation, the support base 1 is fixed on the optical fiber dynamic detection system through 4 bolts. One end of the fiber grating sensor 14 is adhered to the central line of the side surface of the sliding block 8 by using blue-field 9496 instant adhesive, the other end of the fiber grating sensor 14 is adhered to the right baffle 3, the fiber grating sensor 14 is positioned in the groove, and in order to ensure that the fiber grating sensors 14 are on the same horizontal line, the central lines of the two grooves are necessarily on the same straight line. The fiber tail of the fiber grating sensor 14 is connected to a fiber dynamic detection system (not shown in the figure), so as to realize the rapid adjustment of the filter grating. The micro speed-reducing stepping motor 4 is controlled by the micro speed-reducing stepping motor controller 5 to drive the screw rod 6 to rotate, so that the slide block 8 moves left and right on the optical axis 7. Because the fiber grating sensor 14 is adhered to the slide block 8 and the right baffle 3 (the sensing head of the test signal in the fiber grating sensor 14 is positioned in the middle of the slide block 8 and the right baffle 3), the right baffle 3 is fixed on the supporting base 1, and the fiber grating sensor 14 can be stretched and compressed by the left and right movement of the slide block 8 and adjusted to the central wavelength of the fiber grating sensor 14. The micro speed-reducing stepping motor controller 5 and the micro speed-reducing stepping motor 4 can directly use the power supply of the fiber bragg grating dynamic detection system without an external power supply. The miniature speed reducing stepping motor 4 can adopt a miniature speed reducing stepping motor with the model number of 42HD4027-01-A, and the miniature speed reducing stepping motor controller 5 can adopt a controller with the model number of YF-20. The utility model discloses a miniature speed reduction stepping motor controller 5 adjusts miniature speed reduction stepping motor 4's slew velocity and turned angle to 8 displacement to the slider is controlled. Compare in above-mentioned piezoceramics and fixed point stretching method, the utility model has the advantages of the adjustment accuracy is high, and the return stroke error is little, easy operation, work efficiency are high.
The rapid filtering device based on the fiber bragg grating dynamic detection system can be further optimized or/and improved according to actual needs:
as shown in fig. 1, for the convenience of installation, a power output shaft of the miniature speed reduction stepping motor 4 is connected with a screw rod 6 through a coupler 9.
As shown in fig. 1, a screw rod 6 is connected with a left baffle 2 and a right baffle 3 through a deep groove ball bearing 10 as shown in fig. 1.
As shown in fig. 1, the micro reduction stepping motor 4 is fixedly mounted on the support base 1 through a stepping motor flange 11.
As shown in fig. 1, a boss 12 is provided on the right baffle 3 corresponding to the right end of the screw rod 6, and a threaded hole 14 corresponding to the right end of the screw rod 6 is provided on the boss 12. When the adjustment amount meets the requirement, a screw is screwed into the threaded hole 14 to fix the screw rod 6, so that the screw rod 6 is prevented from rotating and the precision is prevented from being influenced.
As shown in fig. 1, the screw 6 is a ball screw.
The utility model discloses well adoption optical axis 7 compares the guide rail, can reduce the return stroke error. The screw 6 adopts a ball screw, and has the advantages of high precision and repeated positioning precision, and the screw precision is C7(0.03mm-0.5 mm). The distance between the stretching and the compression of the optical fiber is small (within 0.1 mm) during the optical fiber calibration, so the rotation speed of the micro speed-reducing stepping motor 4 and the rotation angle of each pulse can be controlled by the micro speed-reducing stepping motor controller 5, and the moving distance of the slide block 8 can be controlled. The miniature speed reduction stepping motor 4 is integrated by a stepping motor with a step angle of 1.8 degrees and a planetary reducer with a speed reduction ratio of 1/64. The distance of the slider moving is 2mm when the stepping motor rotates for one circle (360 degrees). The distance that the slide block moves when the stepping motor gives a pulse can be calculated through a formula.
Formula (II)
Wherein S is the moving distance of a pulse sliding block; theta is the stepping angle of the stepping motor; epsilon is the reduction ratio of the planetary reducer; l is the distance of the slider moving when the motor rotates for one circle (360 degrees).
By substituting the above data into the formula, S-0.00016 mm can be calculated, i.e. the stepper motor controller moves 0.00016mm for each pulse.
And (3) adjusting:
the miniature deceleration stepper motor controller 5 is provided with reset, manual +, manual-, automatic and stop buttons on the control panel, as well as a design balanced voltage display and an actual balanced voltage display and dial 15. The mode that the stepping motor controller controls the miniature stepping motor mainly has two kinds: manual control and automatic control.
And (4) manual control. Two modes of manual control: 1. and (4) dial control. The dial 15 is divided into 200 divisions on average, each division representing one pulse, and the micro reduction stepping motor 4 is rotated by an angle of one step. When the dial 15 rotates one grid of the miniature speed reduction stepping motor 4 for every step distance, the dial 15 is continuously rotated, the miniature stepping motor 4 continuously rotates, and the rotation can be stopped when the requirement is met. 2. Manual + or manual-push button control. Manual + indicates the angle of one step forward of the micro-reduction stepper motor 4 each time this button is pressed. Manually-indicating the angle by which the micro-reduction stepper motor 4 reverses one step per press of this button. The micro-reduction stepping motor 4 stops rotating when the stop button is pressed.
And (6) automatic control. The designed balance voltage is adjusted to a preset voltage value, then an automatic button is pressed, and the miniature speed reduction stepping motor 4 stops working until the value of the actual balance voltage is equal to the designed balance voltage.
Above technical feature constitutes the utility model discloses a best embodiment, it has stronger adaptability and best implementation effect, can increase and decrease unnecessary technical feature according to actual need, satisfies the demand of different situation.
Claims (9)
1. A rapid filtering device based on a fiber bragg grating dynamic detection system is characterized by comprising a supporting base, a left baffle, a right baffle, a miniature speed reduction stepping motor controller, a screw rod, an optical axis and a slide block, wherein the miniature speed reduction stepping motor is electrically connected with the miniature speed reduction stepping motor controller, a miniature speed reduction stepping motor, a left baffle plate and a right baffle plate are fixedly arranged on the supporting base from left to right in sequence, a screw rod which sequentially passes through the left baffle and the right baffle and can rotate along with the power output shaft of the miniature speed reduction stepping motor is fixedly arranged on the power output shaft of the miniature speed reduction stepping motor, the lead screw between the left baffle and the right baffle is provided with a slide block through threads, an optical axis is fixedly arranged between the left baffle and the right baffle, the slide block is provided with a through hole, the slide block is sleeved on the optical axis through the through hole, and the slide block and the right baffle are provided with grooves which can fix the fiber bragg grating sensor and correspond to each other left and right.
2. The rapid filtering device based on the fiber bragg grating dynamic detection system according to claim 1, wherein a power output shaft of the miniature speed reduction stepping motor is connected with the screw rod through a coupler.
3. The rapid filtering device based on the fiber bragg grating dynamic detection system as claimed in claim 2, wherein the lead screw is connected with the left baffle and the right baffle through a deep groove ball bearing.
4. The rapid filtering device based on the fiber bragg grating dynamic detection system according to claim 1, 2 or 3, wherein the micro speed-reducing stepping motor is fixedly installed on the supporting base through a stepping motor flange.
5. The rapid filtering device based on the fiber bragg grating dynamic detection system according to claim 1, 2 or 3, wherein a boss is provided on the right baffle corresponding to the right end of the lead screw, and a threaded hole corresponding to the right end of the lead screw is provided on the boss.
6. The rapid filtering device based on the fiber bragg grating dynamic detection system as claimed in claim 4, wherein a boss is provided on the right baffle corresponding to the right end of the lead screw, and a threaded hole corresponding to the right end of the lead screw is provided on the boss.
7. The rapid filtering device based on fiber grating dynamic detection system according to claim 1, 2, 3 or 6, wherein the lead screw is a ball screw.
8. The rapid filtering device based on the fiber bragg grating dynamic detection system according to claim 4, wherein the lead screw is a ball screw.
9. The rapid filtering device based on the fiber bragg grating dynamic detection system according to claim 5, wherein the lead screw is a ball screw.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922148103.3U CN210603346U (en) | 2019-12-04 | 2019-12-04 | Rapid filtering device based on fiber bragg grating dynamic detection system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922148103.3U CN210603346U (en) | 2019-12-04 | 2019-12-04 | Rapid filtering device based on fiber bragg grating dynamic detection system |
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| CN210603346U true CN210603346U (en) | 2020-05-22 |
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| CN201922148103.3U Expired - Fee Related CN210603346U (en) | 2019-12-04 | 2019-12-04 | Rapid filtering device based on fiber bragg grating dynamic detection system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112459972A (en) * | 2020-12-01 | 2021-03-09 | 新疆大学 | Wind driven generator main bearing state monitoring device and monitoring method thereof |
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2019
- 2019-12-04 CN CN201922148103.3U patent/CN210603346U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112459972A (en) * | 2020-12-01 | 2021-03-09 | 新疆大学 | Wind driven generator main bearing state monitoring device and monitoring method thereof |
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Granted publication date: 20200522 Termination date: 20211204 |
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| CF01 | Termination of patent right due to non-payment of annual fee |