CN108871632A - A kind of optical fibre grating three-dimensional power feels probe and manufacturing method - Google Patents
A kind of optical fibre grating three-dimensional power feels probe and manufacturing method Download PDFInfo
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- CN108871632A CN108871632A CN201810932816.6A CN201810932816A CN108871632A CN 108871632 A CN108871632 A CN 108871632A CN 201810932816 A CN201810932816 A CN 201810932816A CN 108871632 A CN108871632 A CN 108871632A
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- 239000000523 sample Substances 0.000 title claims abstract description 144
- 239000013307 optical fiber Substances 0.000 title claims abstract description 69
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 15
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- 239000011521 glass Substances 0.000 claims description 10
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 4
- 238000004512 die casting Methods 0.000 claims description 3
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- 239000000377 silicon dioxide Substances 0.000 claims description 2
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- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 3
- 238000002432 robotic surgery Methods 0.000 description 3
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L1/00—Measuring force or stress, in general
- G01L1/24—Measuring force or stress, in general by measuring variations of optical properties of material when it is stressed, e.g. by photoelastic stress analysis using infrared, visible light, ultraviolet
- G01L1/242—Measuring force or stress, in general by measuring variations of optical properties of material when it is stressed, e.g. by photoelastic stress analysis using infrared, visible light, ultraviolet the material being an optical fibre
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Abstract
It the invention belongs to fiber grating probe design field, provides a kind of optical fibre grating three-dimensional power and feels that probe and manufacturing method, the optical fibre grating three-dimensional power feel the fiber grating position setting of probe rationally, the sensitivity for the measurement that probe feels power and precision are greatly improved.Wherein, the problems such as multiple fiber grating involvements are distributed in probe body and handle, into a single integrated structure with probe body and handle, can effectively avoid in probe disinfecting process, and adhesive failure, transmissibility reduce caused by changing because of material property.In addition, multiple fiber gratings are distributed and to form different measuring units and measure to the power feel in three of probe dimension faces, the wavelength shift of the fiber grating in each measuring unit forms difference output, effectively improves the sensitivity and precision of the measurement that probe feels power.
Description
Technical field
The invention belongs to Fiber Grating Sensors Technology fields more particularly to a kind of optical fibre grating three-dimensional power to feel probe and system
Make method.
Background technique
With surgical machine man-based development, the accuracy of robotic surgery obtained it is surgical be widely recognized as, but with
Artificial operation is compared, and power operative condition when robotic surgery between medical instrument and human body is difficult to accurately feed back to control in real time
Personnel processed, this undoubtedly will increase the blindness and risk of operation.Therefore, has medical instrument (such as hand that power feels measurement capability
Art probe, surgical clamp) it is extremely important for robotic surgery.
It is traditional can power feel that the medical instrument of measurement is designed based on sensing technologies such as strain ga(u)ge, MEMS, but these
All there is the defects of volume is big, number of leads is more, signal stabilization is poor and is not easy to disinfection treatment in sensing technology, therefore, with
Miniature easy of integration, anti-electromagnetic interference capability it is strong and wavelength signals are not by the optical fiber light of the advantages such as signal light source power influence of fluctuations
The appearance of grid sensing technology, so produce based on fiber grating sensing technology can power feel measurement medical instrument, for example, light
Fine grating probe.
Existing fiber grating probe can carry out three-dimensional power and feel detection and the three-dimensional curved shape of probe be presented, however,
Fiber grating be be fixed on by adhesive it is special there are the outer surfaces of the probe in the spaces such as groove, since probe often needs
It to be sterilized by the modes such as alcohol immersion, disinfection cabinet high temperature, ultraviolet irradiation, in these disinfecting process, adhesive and Ethanol Exposure,
When by high-temperature baking and by ultraviolet light, material property easily changes, and brings such as adhesive failure, transmissibility reduction
The problems such as, it is unfavorable for long-term accurately power and feels measurement.As it can be seen that existing fiber grating probe passes through due to its fiber grating
Adhesive is fixed on the outer surface of probe, therefore causes to be unfavorable for the problem of long-term accurately power feels measurement.In other words, existing
The fiber grating setting of fiber grating probe is unreasonable, and being unfavorable for fiber grating probe, accurately power feels measurement for a long time.
In conclusion existing fiber grating probe is asked in the presence of the technology for being unfavorable for carrying out long-term accurately power feel measurement
Topic.
Summary of the invention
The purpose of the present invention is to provide a kind of optical fibre grating three-dimensional power to feel probe and manufacturing method, it is intended to solve existing
It is unfavorable for carrying out the technical issues of long-term accurately power feels measurement existing for fiber grating probe.
To achieve the above object, on the one hand, can be in realization scheme at the first, the present invention provides a kind of optical fibre grating three-dimensional
Power feels probe, including：
Handle, internal includes eccentric through-hole, cavity and thimble, and the optical fiber leading-in end and optical fiber of the eccentric through-hole are drawn
End is penetrated through with the output end face of the output end face of the cavity and the handle respectively, and the thimble is located at the cavity inside simultaneously
It is penetrated through with the output end face of the cavity, the thimble includes probe body joint face, and the cavity and the thimble are coaxial；
First fiber grating, is fixed on the inside of the thimble, the direction of the axis of first fiber grating with it is described
The direction of the axis of thimble is consistent；
Second fiber grating, vacantly in the cavity, for providing temperature-compensating for first fiber grating；
Probe body, including：Thimble connecting end surface and four fiber gratings are arranged positions, the thimble connecting end surface with it is described
Handle connection, the thimble connecting end surface matching are inserted into the cavity and are fixed with the probe body joint face, described four
Fiber grating setting position is at the inner wall close to the thimble connecting end surface with preset interval angle ring around the probe body
Axis arrangement；
Third fiber grating, the 4th fiber grating, the 5th fiber grating and six fibers grating, are separately fixed at described four
In a fiber grating setting position, and the direction of the axis of the third fiber grating, the 4th fiber grating axis side
To the direction and six fibers grating of the axis of, the 5th fiber grating axis direction with the probe body
Axis direction it is consistent；
Wherein, first fiber grating, second fiber grating, the third fiber grating, the 4th optical fiber
Grating, the 5th fiber grating and the six fibers grating are sequentially connected in series；The optical fiber of the six fibers grating passes through institute
State the output end face that eccentric through-hole draws the handle.
Scheme can be realized in conjunction with the first, in second of achievable scheme, first fiber grating, second light
Fine grating, the third fiber grating, the 4th fiber grating, the 5th fiber grating and the six fibers grating are equal
It is prepared using silica material.
Scheme can be realized in conjunction with the first, can be in realization scheme at the third, four fiber gratings setting position is by interior
It is arranged outward against the outer wall of the probe body.
Scheme can be realized in conjunction with the first, and in the 4th kind of achievable scheme, the thimble connecting end surface is plane, described
Probe body joint face is plane, and the thimble connecting end surface is adhesively fixed with the probe body joint face.
Scheme can be realized in conjunction with the first, and in the 5th kind of achievable scheme, the preset interval angle is 90 °.
Scheme can be realized in conjunction with the first, in the 6th kind of achievable scheme, the shape of the probe body is cylindrical body,
The shape of the handle is cylindrical body.
On the other hand, in the 7th kind of achievable scheme, a kind of manufacturing method of optical fibre grating three-dimensional power feel probe is provided,
The manufacturing method includes the following steps：
The probe body generation mold for producing probe body is manufactured, it includes probe body that the probe body, which generates mold,
Generate slot；
Four fiber grating setting positions of arrangement in slot are generated in the probe body and are correspondingly arranged fiber grating, i.e., first exist
Position is arranged in four fiber gratings of setting at the position of the thimble connecting end surface of the inner wall, and makes four optical fiber
Grating be arranged position with preset interval angle ring around the probe body axis arrange, after four fiber gratings be arranged position
It is sequentially connected in series arrangement third fiber grating, the 4th fiber grating, the 5th fiber grating and six fibers grating, and makes the third
The direction of the axis of fiber grating, the direction of the axis of the 4th fiber grating, the 5th fiber grating axis side
To and the six fibers grating axis direction it is consistent with the direction of the axis of the probe body, and by the third
The optical fiber of the optical fiber of fiber grating and the six fibers grating draws the notch that the probe body generates slot respectively；
The glass solution that preset temperature is poured in mold is generated to the probe body after arrangement fiber grating, it is cooling solidifying
It is taken out after Gu；
The handle generation mold for producing handle is manufactured, i.e., processing generates handle and generates slot, and generates slot along the handle
Axis be arranged produce cavity cavity generate column, and in the cavity generate column cylinder eccentric position setting produce
The eccentric through-hole of eccentric through-hole generates column, and the thimble life for producing the thimble is cut along the axis that the cavity generates column
Pore-forming；
It is generated in the handle and arranges fiber grating in mold, the first light is arranged close to the inner wall that the thimble generates hole in Jie
Fine grating, and the optical fiber of first fiber grating is drawn into the notch that the handle generates slot；
The glass solution of die casting preset temperature is generated to the handle, it includes the cavity, the top that cooled and solidified, which generates,
It is taken out after the solidifying body of needle and the eccentric through-hole；
Second fiber grating is vacantly set in the cavity, i.e., by the optical fiber of the first end of second fiber grating with
The optical fiber of the third fiber grating concatenates, and by the optical fiber of the second end of second fiber grating and the first optical fiber light
The optical fiber of grid concatenates；
Strong adhesive is applied in the end face of the thimble, probe body matching is inserted into the cavity until and described
The end face contact of thimble is adhesively fixed, and the optical fiber of the six fibers grating is drawn the handle by the eccentric through-hole
Output end face.
In conjunction with the 7th kind of achievable scheme, in the 8th kind of achievable scheme, the preset interval angle is 90 °.
In conjunction with the 8th kind of achievable scheme, in the 9th kind of achievable scheme, the shape of the probe body and the hand
The shape of handle is manufactured into cylindrical body.
Probe is felt by the optical fibre grating three-dimensional power that above-mentioned achievable scheme obtains, and the setting of fiber grating position rationally, is visited
Sensitivity and precision for the measurement of power feel are greatly improved.Wherein, the involvement of multiple fiber gratings be distributed in probe body and
It is into a single integrated structure with probe body and handle in handle, it can effectively avoid in probe disinfecting process, because material property changes
Caused by adhesive failure, transmissibility reduce the problems such as.In addition, multiple fiber gratings are distributed to form three different measuring units
The power feel in three of probe different dimension faces is measured, the wavelength shift of the fiber grating in each measuring unit is offset
Difference output is formed, the sensitivity and precision of the measurement that probe feels power are effectively improved.
Detailed description of the invention
Fig. 1 is the structural schematic diagram that the optical fibre grating three-dimensional power that the embodiment of the present invention one provides feels probe；
Fig. 2 is the structural schematic diagram of the probe body and handle in Fig. 1；
Fig. 3 is the structural schematic diagram of probe body in Fig. 1, handle and fiber grating；
Fig. 4 is the axis geodesic structure figure of the fiber grating in the probe body in Fig. 1；
Fig. 5 is the axis geodesic structure figure of the fiber grating in the handle in Fig. 1；
Fig. 6 is the step process signal for the manufacturing method that optical fibre grating three-dimensional power provided by Embodiment 2 of the present invention feels probe
Figure；
Fig. 7 is that the probe body after the arrangement fiber grating in Fig. 6 for generating the probe body in Fig. 1 generates mold
Structural schematic diagram；
Fig. 8 is the structural schematic diagram for generating mold in Fig. 6 for generating the handle of the handle in Fig. 1；
Fig. 9 is that the handle in Fig. 8 generates the structural schematic diagram after mold arrangement fiber grating.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to the accompanying drawings and embodiments, right
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.
Feel that the technology of measurement is asked to solve to be unfavorable for existing for existing fiber grating probe to carry out long-term accurately power
Topic, on the one hand, the embodiment of the present invention one provides a kind of optical fibre grating three-dimensional power feel probe, and referring to Fig. 1-5, details are as follows：
A kind of optical fibre grating three-dimensional power feel probe.The involvement formula fiber grating probe incorporates the light for having minute sense volume
Fine grating, the power that can be used for measuring any three different dimensional faces feel that not only anti-electromagnetic interference capability is strong in measurement process, Er Qiebo
Long signal is not by signal light source power influence of fluctuations.
Referring to Fig. 1-5, the involvement formula fiber grating probe includes handle 2, the first fiber grating FBG1, the second fiber grating
FBG2, probe body 1, third fiber grating FBG3, the 4th fiber grating FBG4, the 5th fiber grating FBG5 and six fibers light
Grid FBG6.
Referring to fig. 2, the inside of handle 2 includes eccentric through-hole 23, cavity 21 and thimble 22, and the optical fiber of eccentric through-hole 23 draws
Enter end and fiber pigtail to penetrate through with the output end face 24 of the output end face 210 of cavity 21 and handle 2 respectively, thimble is located at cavity
21 inside are simultaneously penetrated through with the output end face of cavity 21 210, and cavity 21 and thimble 22 are coaxial.
It should be noted that it should be noted that handle 2 can be solid cylinder, the internal cavity 21 being distributed, top
Needle 22 and eccentric through-hole 23 can be manufactured by the mold of the manufacture handle main body 2 of specific structure, after the structure of the mold
It is continuous to introduce.
Referring to Fig. 1, the first fiber grating FBG1 is fixed on the inside of thimble 22, and the axis of the first fiber grating FBG1
Direction is consistent with the direction of the axis of thimble 22.
In addition, the second fiber grating FBG2 vacantly in cavity 21, is mended for providing temperature for the first fiber grating FBG1
It repays.
It should be noted that the direction of the axis of the first fiber grating FBG1 is consistent with the direction of the axis of thimble 22 is not
Absolutely consistent, allowable error exists.
It, can be with it should also be noted that, the first fiber grating FBG1 and the second fiber grating FBG2 is in plane
Form the measuring unit of the probe for measuring the plane felt by force.For convenience of description, which can be known as to the first dimension
Face, and the measuring unit is known as the first measuring unit.
Referring to Fig. 1 and Fig. 2, probe body 1 includes thimble connecting end surface 10.The matching insertion cavity 21 of thimble connecting end surface 10
And it is fixed with the end face of thimble 22, and the inner wall of the close thimble connecting end surface 10 of probe body 1 includes that four fiber gratings are set
Set, and axis of four fiber grating setting positions with preset interval angle ring around probe body 1 is arranged.
In addition, four fiber grating setting positions abut the outer wall arrangement of probe body from inside to outside；The inner wall of thimble close to
The outer wall of thimble.
In addition, probe body 1 further includes tip 11.Tip 11 can be cone, and the top of cone is used in life
Internal detection.
It should be noted that probe body 1 can be solid, for example, can be solid cylinder.
In addition, the probe body joint face of the thimble connecting end surface 10 of probe body 1 and thimble 22 all can be plane.Top
Needle connecting end surface 10 and probe body joint face are that the close of contact may be implemented in plane, can be in the two when both fixed
Surface fills strong adhesive, after the two is in close contact, the two is firmly made to be fixed together.
It should also be noted that, preset interval angle can be any angle, preferable 90 °.Felt using probe measuring force
When, probe may be set any angle for preset interval angle by the power from all directions, and it is flat to can measure either direction
Felt by force in face.
It should also be noted that, four fiber gratings of setting positions are set can be at the inner wall close to thimble connecting end surface 10
Four fiber gratings are fixed on four fiber grating setting positions.Wherein, it needs as far as possible to paste fiber grating when setting
The outer wall of nearly probe body 1 will not reduce the sensitivity of fiber grating measurement in this way, not only can protect fiber grating.Separately
Outside, four fiber gratings can be fixed on four fiber gratings setting position of probe body 1 by way of involvement.It incorporates
Mode specifically can be as follows：
Firstly, four fiber gratings setting position that the inner wall of the grooving mould of probe body 1 can be generated at one is adjacent to
Arrange four fiber gratings；
Then, glass solution is poured into grooving mould.
After cooled and solidified, the inner wall that four fiber gratings are fixed in a manner of involvement in probe body 1 can be realized
Purpose.
Referring to fig. 4, third fiber grating FBG3, the 4th fiber grating FBG4, the 5th fiber grating FBG5 and six fibers
Grating FBG 6 is separately fixed in four fiber grating setting positions, and the direction of the axis of third fiber grating FBG3, the 4th light
The axis in the direction of the axis of fine grating FBG 4, the direction of the axis of the 5th fiber grating FBG5 and six fibers grating FBG 6
Direction is consistent with the direction of the axis of probe body 1.
It should be noted that third fiber grating FBG3 and the 5th fiber grating FBG5 is in a plane, it can be with shape
At the measuring unit of the probe for measuring the plane felt by force.For convenience of description, which can be known as two-dimensional surface,
And the measuring unit is known as the second measuring unit.
In addition, the 4th fiber grating FBG4 and six fibers grating FBG 6 are in a plane, can form measurement should
The measuring unit of the probe of plane felt by force.For convenience of description, which can be known as to third dimension face, and by the survey
Amount unit is known as third measuring unit.
It should also be noted that, the axis in the direction of axis of third fiber grating FBG3, the 4th fiber grating FBG4
Direction, the 5th fiber grating FBG5 axis direction and six fibers grating FBG 6 axis direction with probe body 1
Axis direction it is unanimously not absolutely consistent, can permit error presence.
Referring to Fig. 1, the first fiber grating FBG1, the second fiber grating FBG2, third fiber grating FBG3, the 4th optical fiber light
Grid FBG4, the 5th fiber grating FBG5 and six fibers grating FBG 6 are sequentially connected in series, and the optical fiber of six fibers grating FBG 6 passes through
The output end face 24 of the extraction handle 2 of eccentric through-hole 23.
It, can be in practice it should be noted that fiber grating includes grating and two parts of optical fiber positioned at grating both ends
Fiber grating is concatenated by the optical fiber at fiber grating both ends and is used.
In order to be best understood from the present invention, referring to Fig. 1, the embodiment that preferably preset interval angle is 90 ° establishes space three
Coordinate is tieed up, auxiliary introduces the working principle that optical fibre grating three-dimensional power feels probe.
First fiber grating FBG1 and the second fiber grating FBG2 is located at XOY plane, forms the first measuring unit and measures XOY
The power of plane feels FZ.
Third fiber grating FBG3 and the 5th fiber grating FBG5 is located at XOZ plane, forms the second measuring unit and measures XOZ
The power of plane feels FX.
4th fiber grating FBG4 and six fibers grating FBG 6 are located at YOZ plane, form third measuring unit and measure YOZ
The power of plane feels FY.
The optical fiber of six fibers grating FBG 6 is drawn by eccentric through-hole, feels FX, 0Z plane to export the power of XOZ plane
Power feels that the power of FY and XOY plane feels FZ.
Working principle is as follows：
For convenience of explanation, the wavelength shift of the first fiber grating FBG1 is defined as AA1, the second fiber grating FBG2
Wavelength shift be defined as AA2, the first fiber grating FBG1 and the second fiber grating FBG2 wavelength shift difference letter
Number it is defined as AA12, the ratio of the temperature sensitivity coefficient of the 5th fiber grating FBG5 and six fibers grating FBG 6 is defined as k,
Wherein, k is that can be integer, is also possible to score.
In addition, the wavelength shift of third fiber grating FBG3 is defined as A A3, the wave of the 5th fiber grating FBG5 again
Long drift value is defined as Δ and is stained with, and the difference signal of the wavelength shift of third fiber grating FBG3 and the 5th fiber grating FBG5 is fixed
Justice is AA35.
In addition, the wavelength shift of the 4th fiber grating FBG4 is defined as A A4, the wave of six fibers grating FBG 6 again
Long drift value is defined as eight Secret, and the difference signal of the wavelength shift of the 4th fiber grating FBG4 and six fibers grating FBG 6 is fixed
Justice is A A46.
Specifically, the temperature sensitivity of the first fiber grating FBG1 and the second fiber grating FBG2 are obtained by temperature test
After the ratio k of coefficient, by the wave length shift of the wavelength shift of the first fiber grating FBG1 and k times of the second fiber grating FBG2
The power that amount subtracts each other the difference signal output measurement XOY plane of acquisition feels FZ.Wherein, algorithmic formula is as follows：
Δ, which enters 12=Δ and enters to foretell k* Δ, enters 2.
In addition, the difference signal A A35=of the wavelength shift of third fiber grating FBG3 and the 5th fiber grating FBG5
Δ enters 3-AA5, and the power of the difference signal output measurement XOZ plane of the wavelength shift is felt FX.
Since probe body 1 is when by the effect of the power of X-direction, there is warp tendency, the bending strain of probe body 1 causes
The third fiber grating FBG3 and the 5th fiber grating FBG5 for being respectively at the front and rear sides of the deformation of probe body 1 generate size phase
Deng but contrary wavelength shift.
Difference signal output not only increases measurement sensitivity, moreover, in the same direction by variation of ambient temperature bring wavelength, etc.
Value drift can be eliminated after difference.
In addition, the difference signal A A46=of the wavelength shift of the 4th fiber grating FBG4 and six fibers grating FBG 6
Δ enters 4-A A6, and the power of the difference signal output measurement YOZ plane of the wavelength shift is felt FY.
4th fiber grating FBG4 and 6 measuring principle of six fibers grating FBG are the same as third fiber grating FBG3 and the 5th light
Fine grating FBG 5 does not make tired state herein.
On the other hand, second embodiment of the present invention provides a kind of manufacturers for manufacturing above-mentioned optical fibre grating three-dimensional power and feeling probe
Method, referring to Fig. 1-9, details are as follows：
Referring to Fig. 6, a kind of optical fibre grating three-dimensional power feels the manufacturing method of probe, which includes step S1, step
S2, step S3, step S4, step S5, step S6, step S7 and step S8.
Step S1：The probe body generation mold for producing probe body is manufactured, it includes probe that probe body, which generates mold,
Main body generates slot.
Referring to Fig. 7 and combine Fig. 2, it should be noted that probe body, which generates mold 3, to be solid, be preferably
Solid cylinder.Can method by being machined or casting, cut probe body in the inside of solid cylinder and generate
Slot 30.Wherein, 301 position of notch that probe body generates slot will be used to be correspondingly formed the thimble connecting end surface 10 of probe body.
Step S2：Four fiber grating setting positions of arrangement in slot are generated in probe body and are correspondingly arranged fiber grating.I.e.
First four fiber gratings are set at the position of the close thimble connecting end surface of inner wall, position is set, and makes four fiber grating settings
Axis of the position with preset interval angle ring around probe body arrange, after in four fiber gratings setting positions be sequentially connected in series arrangement third
Fiber grating, the 4th fiber grating, the 5th fiber grating and six fibers grating, and make the side of the axis of third fiber grating
To the side of the axis in the direction of the axis of, the 4th fiber grating, the direction of the axis of the 5th fiber grating and six fibers grating
Distinguish to consistent with the direction of the axis of probe body, and by the optical fiber of the optical fiber of third fiber grating and six fibers grating
Draw the notch that probe body generates slot；
Referring to Fig. 7 and combine Fig. 4, it should be noted that fiber grating includes grating and the optical fiber two positioned at grating both ends
Fiber grating in practice, can be concatenated by the optical fiber at fiber grating both ends and be used by a part.
In addition, third fiber grating FBG3, the 4th fiber grating FBG4, the 5th fiber grating FBG5 and six fibers grating
FBG6 is arranged at the inner wall of upper end for generating slot 30 close to probe body, it is therefore an objective to allow third fiber grating FBG3, the 4th light
Fine grating FBG 4, the 5th fiber grating FBG5 and six fibers grating FBG 6 it is subsequent pour into glass solution cooled and solidified when, tightly
The inside for pasting the outer wall of solidifying body is fixed.
Slot 30 is generated close to probe body at the inner wall of the upper end of slot 30 it should be noted that generating close to probe body
The lower section of notch 301 inner wall at.
It should be noted that preset interval angle can be any angle, preferable 90 °.
Step S3：The glass solution that preset temperature is poured in mold is generated to the probe body after arrangement fiber grating, it is cold
But it is taken out after solidifying.
It should be noted that the preset temperature of glass solution can generate the material of slot 30 according to fiber grating and probe body
Matter selection.
Step S4：The handle generation mold for producing handle is manufactured, i.e., processing generates handle and generates slot, and generates along handle
The cavity that producible cavity is arranged in the axis of slot generates column, and produces partially in the eccentric position setting that cavity generates the cylinder of column
The eccentric through-hole of heart through-hole generates column, and generates hole along the thimble that the axis that cavity generates column cuts producible thimble.
Referring to Fig. 8 and Fig. 9, and combine Fig. 2, it should be noted that handle, which generates slot 40, can correspond to generation handle 2, cavity
Generation cavity 21 can be corresponded to by generating column 42, and eccentric through-hole, which generates column 43, can correspond to generation eccentric through-hole 23, and thimble generates hole 41 can
It is corresponding to generate thimble 22.
Step S5：The first fiber grating is arranged in the inner wall for generating hole close to thimble, and the optical fiber of the first fiber grating is drawn
Handle generates the notch of slot out.
Referring to Fig. 9, the inner wall for generating hole 41 close to thimble arranges the first fiber grating FBG1, it is therefore intended that ensures the first light
Fine grating FBG 1 it is subsequent pour into glass solution cooled and solidified when, the inside for being close to the outer wall of solidifying body is fixed.
Step S6：The glass solution of die casting preset temperature is generated to handle, it includes cavity, thimble that cooled and solidified, which generates,
And it is taken out after the solidifying body of eccentric through-hole.
Step S7：Hanging the second fiber grating of setting in the cavities, by the optical fiber of the first end of the second fiber grating and the
The optical fiber of three fiber gratings concatenates, and the optical fiber of the second end of the second fiber grating is concatenated with the optical fiber of the first fiber grating.
Step S8：Strong adhesive is applied in the end face of thimble, probe body is matched into insertion cavity up to probe body
The contact of the end face of thimble connecting end surface and thimble is adhesively fixed, and the optical fiber of six fibers grating is drawn hand by eccentric through-hole
The output end face of handle.
In embodiments of the present invention, a kind of optical fibre grating three-dimensional power feel probe is provided, which, which feels, visits
Rationally, the sensitivity for the measurement that probe feels power and precision are greatly improved for the fiber grating position setting of needle.Wherein, Duo Geguang
Fine grating involvement is distributed in probe body 1 and handle 2, into a single integrated structure with probe body 1 and handle 2, can effectively avoid spy
In needle disinfecting process, caused by changing because of material property the problems such as adhesive failure, transmissibility reduction.In addition, multiple light
Fine grating, which is distributed, to be formed different measuring units and surveys to the feel of the power in the first dimension face of probe, two-dimensional surface and third dimension face
It measures, the wavelength shift of the fiber grating in each measuring unit forms difference output, effectively improves the measurement that probe feels power
Sensitivity and precision.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Made any modifications, equivalent replacements, and improvements etc., should all be included in the protection scope of the present invention within mind and principle.
Claims (9)
1. a kind of optical fibre grating three-dimensional power feels probe, which is characterized in that including：
Handle, internal includes eccentric through-hole, cavity and thimble, the optical fiber leading-in end and fiber pigtail point of the eccentric through-hole
Not with the output end face of the output end face of the cavity and the handle penetrate through, the thimble be located at the cavity inside and with institute
The output end face perforation of cavity is stated, the thimble includes probe body joint face, and the cavity and the thimble are coaxial；
First fiber grating is fixed on the inside of the thimble, the direction of the axis of first fiber grating and the thimble
Axis direction it is consistent；
Second fiber grating, vacantly in the cavity, for providing temperature-compensating for first fiber grating；
Probe body, including：Position, the thimble connecting end surface and the handle is arranged in thimble connecting end surface and four fiber gratings
Connection, the thimble connecting end surface matching are inserted into the cavity and are fixed with the probe body joint face, four optical fiber
Grating setting position is at the inner wall close to the thimble connecting end surface with preset interval angle ring around the axis of the probe body
Arrangement；
Third fiber grating, the 4th fiber grating, the 5th fiber grating and six fibers grating are separately fixed at four light
In fine grating setting position, and the direction of the axis of the third fiber grating, the direction of the axis of the 4th fiber grating, institute
State axis of the direction of the direction of the axis of the 5th fiber grating and the axis of the six fibers grating with the probe body
The direction of line is consistent；
Wherein, first fiber grating, second fiber grating, the third fiber grating, the 4th fiber grating,
5th fiber grating and the six fibers grating are sequentially connected in series；The optical fiber of the six fibers grating passes through the bias
Through-hole draws the output end face of the handle.
2. optical fibre grating three-dimensional power as described in claim 1 feels probe, which is characterized in that first fiber grating, described
Second fiber grating, the third fiber grating, the 4th fiber grating, the 5th fiber grating and the six fibers
Grating is all made of silica material and is prepared.
3. optical fibre grating three-dimensional power as described in claim 1 feels probe, which is characterized in that position is arranged in four fiber gratings
It is arranged from inside to outside against the outer wall of the probe body.
4. optical fibre grating three-dimensional power as described in claim 1 feels probe, which is characterized in that the thimble connecting end surface is flat
Face, the probe body joint face are plane, and the thimble connecting end surface is adhesively fixed with the probe body joint face.
5. optical fibre grating three-dimensional power as described in claim 1 feels probe, which is characterized in that the preset interval angle is 90 °.
6. optical fibre grating three-dimensional power as described in claim 1 feels probe, which is characterized in that the shape of the probe body is circle
Cylinder, the shape of the handle are cylindrical body.
7. the manufacturing method that a kind of optical fibre grating three-dimensional power feels probe, which is characterized in that the manufacturing method includes the following steps：
The probe body generation mold for producing probe body is manufactured, it includes that probe body generates that the probe body, which generates mold,
Slot；
Four fiber grating setting positions of arrangement in slot are generated in the probe body and are correspondingly arranged fiber grating, i.e., first described
Position is arranged in four fiber gratings of setting at the position of the thimble connecting end surface of inner wall, and makes four fiber gratings
Be arranged position with preset interval angle ring around the probe body axis arrange, after four fiber gratings setting position successively
Concatenation arrangement third fiber grating, the 4th fiber grating, the 5th fiber grating and six fibers grating, and make the third optical fiber
The direction of the axis of grating, the direction of the axis of the 4th fiber grating, the 5th fiber grating axis direction and
The direction of the axis of the six fibers grating is consistent with the direction of the axis of the probe body, and by the third optical fiber
The optical fiber of the optical fiber of grating and the six fibers grating draws the notch that the probe body generates slot respectively；
The glass solution that preset temperature is poured in mold is generated to the probe body after arrangement fiber grating, after cooled and solidified
It takes out；
The handle generation mold for producing handle is manufactured, i.e. processing generates handle and generates slot, and the axis of slot is generated along the handle
The cavity generation column for producing cavity is arranged in line, and produces bias in the eccentric position setting that the cavity generates the cylinder of column
The eccentric through-hole of through-hole generates column, and the thimble generation for producing the thimble is cut along the axis that the cavity generates column
Hole；
It is generated in the handle and arranges fiber grating in mold, i.e., the first optical fiber light is set close to the inner wall that the thimble generates hole
Grid, and the optical fiber of first fiber grating is drawn into the notch that the handle generates slot；
The glass solution of die casting preset temperature is generated to the handle, it includes the cavity, the top that cooled and solidified, which generates,
It is taken out after the solidifying body of needle and the eccentric through-hole；
Second fiber grating is vacantly set in the cavity, i.e., by the optical fiber of the first end of second fiber grating with it is described
The optical fiber of third fiber grating concatenates, and by the optical fiber of the second end of second fiber grating and first fiber grating
Optical fiber concatenation；
Strong adhesive is applied in the end face of the thimble, probe body matching is inserted into the cavity until and the thimble
End face contact be adhesively fixed, and the optical fiber of the six fibers grating is drawn into the defeated of the handle by the eccentric through-hole
End face out.
8. manufacturing method as claimed in claim 7, which is characterized in that the preset interval angle is 90 °.
9. manufacturing method as claimed in claim 7, which is characterized in that the shape of the shape of the probe body and the handle
Manufacture is at cylindrical body.
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| CN107817065A (en) * | 2017-09-28 | 2018-03-20 | 中北大学 | A kind of compact detonation pressure measuring system based on bragg grating |
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| US20140137667A1 (en) * | 2007-12-18 | 2014-05-22 | Intuitive Surgical Operations, Inc. | Ribbed Force Sensor |
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