CN110095086A - Current type compound bending sensor and preparation method thereof - Google Patents
Current type compound bending sensor and preparation method thereof Download PDFInfo
- Publication number
- CN110095086A CN110095086A CN201910477749.8A CN201910477749A CN110095086A CN 110095086 A CN110095086 A CN 110095086A CN 201910477749 A CN201910477749 A CN 201910477749A CN 110095086 A CN110095086 A CN 110095086A
- Authority
- CN
- China
- Prior art keywords
- light
- slot
- photocon
- light guide
- connector
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000005452 bending Methods 0.000 title claims abstract description 84
- 150000001875 compounds Chemical class 0.000 title claims abstract description 39
- 238000002360 preparation method Methods 0.000 title claims abstract description 10
- 230000004907 flux Effects 0.000 claims abstract description 55
- 238000000034 method Methods 0.000 claims description 26
- 230000008569 process Effects 0.000 claims description 21
- 239000007767 bonding agent Substances 0.000 claims description 15
- 238000012545 processing Methods 0.000 claims description 11
- 238000009434 installation Methods 0.000 claims description 9
- 239000000463 material Substances 0.000 claims description 9
- 239000007787 solid Substances 0.000 claims description 6
- 230000000903 blocking effect Effects 0.000 claims description 5
- 238000004519 manufacturing process Methods 0.000 claims description 5
- 230000005611 electricity Effects 0.000 claims description 4
- 238000000576 coating method Methods 0.000 claims description 3
- 238000005507 spraying Methods 0.000 claims description 3
- 239000011248 coating agent Substances 0.000 claims description 2
- 238000009738 saturating Methods 0.000 claims 2
- 238000011896 sensitive detection Methods 0.000 claims 1
- 238000004381 surface treatment Methods 0.000 claims 1
- 238000001514 detection method Methods 0.000 abstract description 10
- 230000008859 change Effects 0.000 abstract description 7
- 230000000694 effects Effects 0.000 description 14
- 238000010586 diagram Methods 0.000 description 9
- 230000003534 oscillatory effect Effects 0.000 description 9
- 238000005259 measurement Methods 0.000 description 8
- 230000008901 benefit Effects 0.000 description 6
- 239000000835 fiber Substances 0.000 description 4
- 238000010147 laser engraving Methods 0.000 description 4
- 230000003287 optical effect Effects 0.000 description 4
- 238000012546 transfer Methods 0.000 description 3
- 238000003486 chemical etching Methods 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 238000005253 cladding Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000013307 optical fiber Substances 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/24—Measuring arrangements characterised by the use of optical techniques for measuring contours or curvatures
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
- G01D5/12—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means
- G01D5/14—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optical Couplings Of Light Guides (AREA)
- Light Guides In General And Applications Therefor (AREA)
Abstract
The invention discloses current type compound bending sensors for being related to sensor technical field and preparation method thereof, solve the problems, such as to be unable to measure two-way bending degree.Its key points of the technical solution are that including light emission component, light-receiving component and there is photocon flexible, the variation of photocon luminous flux of photocon during compound bending has monotonicity, the both ends for being installed on photocon that light emission component and light-receiving component are fixed respectively, light emission component includes light-emitting component, light-receiving component includes light receiving element, and light-emitting component and light receiving element are located at the both ends of photocon.The luminous flux and compound bending degree of photocon correspond, photocon is bent with the bending of measured object, the luminous flux of photocon is set to change, light after light flux variations is received by light receiving element again, it is converted into current signal using light receiving element, to realize the function of detection measured object compound bending degree.
Description
Technical field
The present invention relates to sensor technical fields, in particular to current type compound bending sensor and preparation method thereof.
Background technique
Sensor is a kind of detection device, can collect measured information, and can be for conversion into telecommunications according to certain rules
Number or other required forms information output, required with transmission, processing, storage, display, record and control for meeting information etc..
Bending sensor is the sensor for detecting measured object bending degree, it is common in the market in bending sensor in, have resistance
Formula sensor, by measure of the change the degree of bending of resistance sensor resistance during bending, but traditional resistor senses
The measurement scheme of formula can only measure unidirectional bending degree, be unable to measure two-way bending degree.
Summary of the invention
The purpose of the present invention is to provide current type compound bending sensors and preparation method thereof, two-way with that can measure
Bending degree effect.
Above-mentioned technical purpose of the invention has the technical scheme that
Current type compound bending sensor, including light emission component, light-receiving component and have photocon flexible, institute
The variation for stating photocon luminous flux of photocon during compound bending has monotonicity, the light emission component and light
The both ends for being installed on photocon that receiving unit is fixed respectively, the light emission component includes light-emitting component, the light-receiving
Component includes light receiving element, and the light-emitting component and light receiving element are located at the both ends of photocon.
Further: the light-emitting component is luminous quantity and the proportional active light emissive device of driving current.
Further: the light-emitting component is light emitting diode.
Further: the light receiving element is that electric current and light receiving element table are exported in the case where supply voltage is constant
The proportional active light flux detector part of the luminous flux that face receives.
Further: the light receiving element is phototriode.
It is further: the first connector to be equipped between the light emission component and photocon, first connector is
Solid, first connector are equipped with the first opening for accommodating light emission component, and first connector, which is equipped with, accommodates light guide member
One end of part and perforation to the first opening the first connecting hole, first connector respectively with light emission component and photocon
It is rigidly bonded by transparent bonding agent.
It is further: the second connector to be equipped between the light-receiving component and photocon, second connector is
Solid, second connector are equipped with the second opening for accommodating light-receiving component, and second connector, which is equipped with, accommodates light guide member
One end of part and perforation to the second opening the second connecting hole, second connector respectively with light-receiving component and photocon
It is rigidly bonded by transparent bonding agent.
Further: the photocon includes light guide ontology, and the light guide ontology is that refractive index is greater than 1 and has
Material flexible, the light guide ontology include at least one unit length section；
In the unit length section: the light guide ontology is equipped with light loss slot and the Echo Wall blocks slot, the light
Line loss slot and the Echo Wall block slot to extend along the length direction of light guide ontology, and the light loss groove depth is less than leaded light
The 1/20 of part body width, the Echo Wall block the depth of slot no more than the depth of light loss slot, the light loss slot
Internal surface area blocks 4 times of slot internal surface area not less than the Echo Wall, the light guide ontology at least 1 at cross-section center be located at
Light loss rooved face geometric center and the Echo Wall block on the line of rooved face geometric center；
The light guide body exterior is equipped with covering, and the light guide ontology, light loss slot and the Echo Wall block slot table
Face is bonded with covering inner surface, and the covering outer surface is smooth and continuous surface, and the refractive index of the covering, which is less than, to be led
The refractive index of light part ontology.
The preparation method of current type compound bending sensor, comprising the following steps:
Interception photocon: its light flux variations during compound bending for intercepting suitable length have the institute of monotonicity
State photocon；
Installation connecting element: the photocon both ends are respectively put into the first connecting hole and the second connection of the first connector
In second connecting hole of part, first connector is Nian Jie using transparent bonding agent rigidity with photocon；
Installation light emission component: the light emission component is put into the first opening, and the light-emitting component is made to be located at light
At one end of guiding element, the light emission component is Nian Jie using transparent bonding agent rigidity with the first connector；
Installation light-receiving component: the light-receiving component is put into the second opening, and is located at the light receiving element
At one end of photocon, the light-receiving component is Nian Jie using transparent bonding agent rigidity with the first connector.
It is further: further comprising the steps of before the interception photocon the step of:
Processing light guide ontology: material of the refractive index of suitable length greater than 1 is intercepted as light guide ontology out；
Process light loss slot: in the outer surface process light loss slot of the light guide ontology, and make the light
Loss slot extends along the length direction of light guide ontology, and the light loss groove depth is less than the 1/20 of light guide body width；
Process the Echo Wall and block slot: in the outer surface of the light guide ontology, the processing Echo Wall blocks slot, and makes described
The Echo Wall blocks slot to extend along the length direction of light guide ontology, and the Echo Wall blocks the depth of slot to be no more than light loss slot
Depth, the light loss slot internal surface area blocks 4 times of slot internal surface area not less than the Echo Wall, the light guide ontology
Cross-section center is located at light loss rooved face geometric center at least 1 and the Echo Wall blocks the line of rooved face geometric center
On；
Process covering: using spraying or coating process light guide body outer surface production with light guide ontology,
The refractive index of the covering that light loss slot and the Echo Wall block slot outer surface to be bonded, the material of the covering is less than light guide sheet
The refractive index of body；
Cladding surface processing: being extruded to shape to covering or cut or condensed or curing process and keeps covering outer surface flat
It is whole and continuous.
In conclusion the invention has the following advantages:
Light source is provided to photocon by the light-emitting component of light emission component, light passes through photocon simultaneously from light-emitting component
It is irradiated on the light receiving element of light-receiving component.When light-emitting component issue light quantity it is constant when, the luminous flux of photocon with
Bending degree corresponds.Photocon is bent with the bending of measured object, and the luminous flux of photocon is made to change, and is passed through
Light after light flux variations is received by light receiving element again, is converted into signal using light receiving element, to realize that detection is tested
The function of object bending degree.
Because the variation of photocon luminous flux of photocon during compound bending has monotonicity, make measured object
Curved angle also corresponded with the bending degree of photocon, and then the light that receives can be passed through by light receiving element
The signal acquisition of conversion to measured object bending direction and angle, thus realize compound bending detection effect, to effectively mention
High detection effect and application range, it is very convenient in angle measurement, while measurement accuracy also with higher.In electricity
In the case that source voltage is constant, light-receiving component output electric current and the luminous flux that surface receives are proportional, i.e. output electricity
Stream is corresponded with bending degree, so as to judge the bending direction and angle of measured object by the size of electric current.
The setting of slot is blocked by light loss slot and the Echo Wall so that photocon either along light loss slot to time
When sound wall blocks the direction of slot still to block slot to be bent to the direction of light loss slot along the Echo Wall, light loss slot can be transferred through
Or the Echo Wall blocks the geometrical model of slot influence optical path, so that the geometry mould of the geometrical model of optical path and bending loss oscillatory occurences
Type mismatches, to eliminate the bending loss oscillatory occurences of compound bending.Therefore, light guide ontology is curved to two different directions
Bent luminous flux all makes luminous flux in monotone variation because bending loss oscillatory occurences is eliminated.Also, light guide ontology is from flat
Straight state to single direction it is curved during, or the process of straightened condition is extended to from curved state along single direction
In, luminous flux is also all in monotone variation.
When light guide ontology is in straightened condition, since there are light loss slots and the Echo Wall to block slot, so that guide-lighting
Part ontology luminous flux of some when being in straightened condition is depleted；When light guide ontology is to a lateral bending of light loss slot
Qu Shi, the light quantity to dissipate from light loss slot is to reduce, and increase instead from the light quantity that the Echo Wall blocks slot to dissipate, due to light
Line loss slot internal surface area summation is greater than the Echo Wall and blocks slot internal surface area summation, therefore causes the principal element of light flux variations
It is light loss slot, luminous flux is to be increased monotonically with light guide ontology to the curving of light loss slot；Work as light guide
Ontology to the Echo Wall block slot curving when, have more light from light loss slot escape cortex and dissipate, and from return
Sound wall blocks the light of slot evolution cortex to reduce, and blocks slot inner surface since light loss slot internal surface area summation is greater than the Echo Wall
Product summation, therefore the principal element of light flux variations is caused to be light loss slot, luminous flux are with light guide ontology to the Echo Wall
Block the curving of slot and monotone decreasing.
So that light guide ontology either blocks slot to be bent to the direction of light loss slot or along light along the Echo Wall
When line loss slot blocks the direction of slot to be bent to the Echo Wall, the light flux variations of light guide ontology in monotone variation, and
This variation is consecutive variations.So that the photocon be applied to sensor detection compound bending degree when can have compared with
Good measurement effect, and can have it is broader can application.
Light loss slot and the Echo Wall block depth an order of magnitude smaller than fiber core radius of slot, when light guide ontology is curved
Qu Shi, the overall loss of photocon are Approximate Equivalents in being superimposed macrobending loss and microbending loss, therefore with photocon
Bending, the variation of luminous flux is significant.The received light quantity of light receiving element is changed significantly, so that the letter of light-receiving component output
Number variation be also it is significant, so as to obtain the higher detection data of precision.
Since light guide body exterior wraps up covering, and covering outer surface is smooth continuous, therefore photocon shape is place
It is flat to locate congruous continuity, overall structure is fine and close, and the mechanical properties such as elasticity, toughness, tension are approximate with conventional fiber consistent, protects
Measurement effect and service life are demonstrate,proved.Therefore, novel light element among the above and preparation method thereof is compared to conventional fiber,
Under the premise of not sacrificing light guide bulk lifetime, achieve the purpose that luminous flux is significantly monotonically changed with compound bending.
Detailed description of the invention
Fig. 1 is the cross-sectional view that light loss slot and the Echo Wall block slot in embodiment 1；
Fig. 2 is the structural schematic diagram of light loss slot in embodiment 1；
Fig. 3 is the structural schematic diagram that the Echo Wall blocks slot in embodiment 1；
Fig. 4 is the cross-sectional structure schematic diagram of light guide ontology in embodiment 1；
Light path schematic diagram when Fig. 5 is photocon nature straightened condition in embodiment 1；
Fig. 6 is light path schematic diagram when photocon is to close to Echo Wall blocking slot curving in embodiment 1；
Fig. 7 is light path schematic diagram when photocon is to close to light loss slot curving in embodiment 1；
Fig. 8 is the cross-sectional view that light loss slot and the Echo Wall block slot in embodiment 2；
Fig. 9 is the structural schematic diagram of light loss slot in embodiment 3；
Figure 10 is the structural schematic diagram that the Echo Wall blocks slot in embodiment 3；
Figure 11 is the cross-sectional view that light loss slot and the Echo Wall block slot in embodiment 4；
Figure 12 is the cross-sectional structure schematic diagram of light guide ontology in embodiment 5.
Appended drawing reference: 11, light guide ontology；12, light loss slot；13, the Echo Wall blocks slot；14, covering；15, first
Connector；16, the second connector；21, light emission component；22, light-receiving component.
Specific embodiment
Below in conjunction with attached drawing, invention is further described in detail.
Embodiment 1:
Current type compound bending sensor, as shown in Figures 1 to 7, including light emission component 21, light-receiving component 22 and tool
The refractive index of flexible photocon, photocon is greater than 1, and photocon is optical fiber in the present embodiment.Photocon exists
The variation of the luminous flux of photocon has monotonicity during compound bending, and light emission component 21 and light-receiving component 22 are distinguished
The fixed both ends for being installed on photocon, light emission component 21 include light-emitting component, and light-receiving component 22 includes light-receiving member
Part, light-emitting component and light receiving element are located at the both ends of photocon.
Light-emitting component is luminous quantity and the proportional active light emissive device of driving current.
Light-emitting component is light emitting diode.
Light receiving element is the light for exporting electric current in the case where supply voltage is constant and receiving with light receiving element surface
The proportional active light flux detector part of flux.
Light receiving element is phototriode.
The first connector 15 is equipped between light emission component 21 and photocon, the first connector 15 is solid, and first connects
Fitting 15 is equipped with the first opening for accommodating light emission component 21, and the first connector 15 is equipped with the one end for accommodating photocon and perforation
To the first connecting hole of the first opening, the first connector 15 passes through with light emission component 21 and photocon transparent bonding respectively
Agent is rigidly bonded.
The second connector 16 is equipped between light-receiving component 22 and photocon, the second connector 16 is solid, and second connects
Fitting 16 is equipped with the second opening for accommodating light-receiving component 22, and the second connector 16 is equipped with the one end for accommodating photocon and perforation
To the second connecting hole of the second opening, the second connector 16 passes through with light-receiving component 22 and photocon transparent bonding respectively
Agent is rigidly bonded.
Photocon includes light guide ontology 11, and light guide ontology 11 is that refractive index is greater than 1 and has material flexible, is led
Light part ontology 11 includes at least one unit length section；
In unit length section: light guide ontology 11 is equipped with light loss slot 12 and the Echo Wall blocks slot 13, light loss
Slot 12 and the Echo Wall block slot 13 to extend along the length direction of light guide ontology 11, and 12 depth of light loss slot is less than light guide
The 1/20 of 11 width of ontology, the Echo Wall blocks the depth of slot 13 no more than the depth of light loss slot 12, in light loss slot 12
Surface area blocks 4 times of 13 internal surface area of slot not less than the Echo Wall, light guide ontology 11 at least 1 at cross-section center be located at light
12 surface geometry center of line loss slot and the Echo Wall block on the line at 13 surface geometry center of slot.
Covering 14 is equipped with outside light guide ontology 11, light guide ontology 11, light loss slot 12 and the Echo Wall block slot 13
Surface is bonded with 14 inner surface of covering, and 14 outer surface of covering is smooth and continuous surface, and the refractive index of covering 14, which is less than, to be led
The refractive index of light part ontology 11.
The preparation method of current type compound bending sensor, comprising the following steps:
S1, processing light guide ontology 11: material of the refractive index of suitable length greater than 1 is intercepted as light guide ontology out
11；
S2, process light loss slot 12: in the outer surface process light loss slot 12 of light guide ontology 11, and make light
Loss slot 12 extends along the length direction of light guide ontology 11, and 12 depth of light loss slot is less than the 1/ of 11 width of light guide ontology
20；
S3, the processing Echo Wall block slot 13: in the outer surface of light guide ontology 11, the processing Echo Wall blocks slot 13, and makes
The Echo Wall blocks slot 13 to extend along the length direction of light guide ontology 11, and the Echo Wall blocks the depth of slot 13 to be no more than light loss
The depth of slot 12,12 internal surface area of light loss slot block 4 times of 13 internal surface area of slot, light guide ontology 11 not less than the Echo Wall
At least 1 at cross-section center be located at 12 surface geometry center of light loss slot and the Echo Wall and block 13 surface geometry center of slot
On line；
S4, processing covering 14: use the process of spraying or coating in the production of 11 outer surface of light guide ontology and leaded light
The covering 14 that part ontology 11, light loss slot 12 and the Echo Wall block 13 outer surface of slot to be bonded, the material of the covering 14
Refractive index is less than the refractive index of light guide ontology 11；
S5, covering 14 are surface-treated: covering 14 being extruded to shape or cut or condensed or curing process and makes covering
14 outer surfaces are smooth and continuous；
S6, interception photocon: its light flux variations during compound bending for intercepting suitable length have monotonicity
Photocon；
S7, installation connecting element: photocon both ends are respectively put into the first connecting hole of the first connector 15 and second and are connected
In second connecting hole of fitting 16, the first connector 15 is Nian Jie using transparent bonding agent rigidity with photocon；
S8, installation light emission component 21: light emission component 21 is put into the first opening, and light-emitting component is made to be located at light guide
At one end of element, light emission component 21 is Nian Jie using transparent bonding agent rigidity with the first connector 15；
S9, installation light-receiving component 22: light-receiving component 22 is put into the second opening, and light receiving element is made to be located at light
At one end of guiding element, light-receiving component 22 is Nian Jie using transparent bonding agent rigidity with the first connector 15.
In the step of process light loss slot 12, the techniques side such as laser engraving or chemical etching or machining can be used
Method is processed, and in the present embodiment, is processed using the process of laser engraving.
It processes in the step of Echo Wall blocks slot 13, the techniques such as laser engraving or chemical etching or machining can be used
Method is processed, and in the present embodiment, is processed using the process of laser engraving, light loss slot 12 and the Echo Wall
Slot 13 is blocked to use identical processing technology, to be easier to obtain identical surface characteristic, it is easier to guarantee light guide
Luminous flux during compound bending of ontology 11 is monotonically changed.
It is aobvious with bending to have reached luminous flux on the basis of can guarantee the structural behaviour of photocon ontology for this production method
Write the purpose being monotonically changed.Processing method is simple, so that process costs are more cheap, can play and improve production efficiency and drop
The effect of low cost.
The present embodiment has the advantage that
Light source is provided to photocon by the light-emitting component of light emission component 21, light passes through photocon from light-emitting component
And it is irradiated on the light receiving element of light-receiving component 22.
If Fig. 5, Fig. 6 and arrow shown in fig. 7 are that expected light injects direction.When the light quantity that light-emitting component issues is permanent
Periodically, by the variation of the luminous flux of photocon during compound bending with the photocon of monotonicity, so that light guide
The luminous flux and bending degree of element correspond.Stable light source is given by light-emitting component, and makes photocon with measured object
Bending and be bent, so that the luminous flux of photocon be made to change, the light after light flux variations is again by light-receiving member
Part receives, and is converted into signal using light receiving element, to realize the function of detection measured object bending degree.And because light guide
The variation of element luminous flux of photocon during compound bending has monotonicity, so that the bending direction of measured object and curved
Bent angle is also corresponded with the bending degree of photocon, and then can be passed through the light received by light receiving element and be converted
Signal acquisition to measured object bending direction and angle, thus realize compound bending detection effect, to effectively increase
Detection effect and application range, it is very convenient in angle measurement, while measurement accuracy also with higher.
The driving input of sensor is current value in the present embodiment, and the luminous quantity of light-emitting component is directly proportional to driving current
Relationship；Light receiving element receives output current value after light.In the case where supply voltage is constant, light-receiving component 22 exports electricity
It is proportional to flow the luminous flux received with surface, i.e. output electric current and bending degree corresponds, so as to pass through electric current
Size, judge the bending direction and angle of measured object.
It is proportional by the luminous quantity and driving current of light-emitting component, so as to be input to light-emitting component by adjusting
Driving current control light-emitting component luminous quantity, can play and improve applicability and the effect that is convenient for measuring.
Light source is provided to photocon by light emitting diode, enables light emitting diode by receiving galvanoluminescence, realizes
The function of light source is provided to photocon.
The light that photocon transmitting is received by phototriode enables phototriode to issue electric current by receiving light,
It realizes and converts electric current for the luminous flux of photocon, so as to obtain the bending direction of measured object and the letter of angle by electric current
Breath.
Light emission component 21 and photocon, the first connecting hole and the first open communication are connected by the first connector 15,
So that the Light energy transfer that light emission component 21 issues is to photocon.Make light emission component 21 and light guide by transparent bonding agent
Element is fixed with the first connector 15, while also can guarantee Light energy transfer to photocon.
Light-receiving component 22 and photocon, the second connecting hole and the second open communication are connected by the second connector 16,
So that the light of 22 light-receiving photocon of light-receiving component transmitting.Make light-receiving component 22 and light guide by transparent bonding agent
Element is fixed with the second connector 16, while also can guarantee Light energy transfer that photocon issues to light-receiving component 22.
The setting that slot 13 is blocked by light loss slot 12 and the Echo Wall, so that photocon is either along light loss slot
When 12 directions for arriving Echo Wall blocking slot 13 still block slot 13 to be bent to the direction of light loss slot 12 along the Echo Wall, Dou Nengtong
The geometrical model that light loss slot 12 or the Echo Wall block slot 13 to influence optical path is crossed, so that the geometrical model and bending loss of optical path
The geometrical model of oscillatory occurences mismatches, to eliminate the bending loss oscillatory occurences of compound bending.Therefore, light guide ontology 11
The direction bending luminous fluxes different to two all make luminous flux in monotone variation because bending loss oscillatory occurences is eliminated.And
And light guide ontology 11 from straightened condition it is curved to single direction during, or stretch from curved state along single direction
During exhibition to straightened condition, luminous flux is also all in monotone variation.
As shown in figure 5, when light guide ontology 11 is in straightened condition, since there are light loss slots 12 and the Echo Wall to hinder
Fault trough 13 causes the light of the specific incidence angle in part to block slot 13 to escape cortex with the Echo Wall from light loss slot 12 and dissipate,
So that the luminous flux of some when being in straightened condition of light guide ontology 11 is depleted.
As shown in fig. 6, when light guide ontology 11 blocks the curving of slot 13 to the Echo Wall, the table of light loss slot 12
Face is stretched and to be gradually intended to light loss slot 12 vertical with input path, has more light to escape from light loss slot 12
Cortex and dissipate, reduce luminous flux；The Echo Wall, which blocks 13 surface of slot to be compressed and is gradually intended to the Echo Wall, at this time blocks slot
13 is parallel with input path, is retained from the light that the Echo Wall blocks slot 13 to escape cortex now originally, and increased luminous flux.
13 internal surface area summation of slot is blocked since 12 internal surface area summation of light loss slot is greater than the Echo Wall, causes light flux variations
Principal element be light loss slot 12, so, luminous flux be with light guide ontology 11 to the Echo Wall block slot 13 a lateral bending
It is bent and monotone decreasing.
As shown in fig. 7, when curving of the light guide ontology 11 to light loss slot 12,12 inner surface of light loss slot
Gradually compressed and be gradually intended to it is parallel with input path, at this time from light loss slot 12 dissipate light quantity be reduce；And
The Echo Wall block 13 surface of slot be stretched and be gradually intended to it is vertical with input path, at this time from the Echo Wall block slot 13 dissipate
Light quantity increases instead.13 internal surface area summation of slot is blocked since 12 internal surface area summation of light loss slot is greater than the Echo Wall,
The principal element for causing light flux variations is light loss slot 12, so, luminous flux is with light guide ontology 11 to light loss
The curving of slot 12 and be increased monotonically.
So that light guide ontology 11 either blocks slot 13 to go back to the bending of the direction of light loss slot 12 along the Echo Wall
It is when blocking the direction of slot 13 to be bent to the Echo Wall along light loss slot 12, the light flux variations of light guide ontology 11 are in dullness
Variation, and this variation is consecutive variations.So that the photocon, which is applied to sensor, detects compound bending journey
Can have preferable measurement effect when spending, and can have it is broader can application.
Light loss slot 12 and the Echo Wall block depth an order of magnitude smaller than fiber core radius of slot 13, when light guide sheet
When body 11 is bent, the overall loss of photocon is Approximate Equivalent in being superimposed macrobending loss and microbending loss, therefore with light
Guiding element bending, the variation of luminous flux is significant.
Embodiment 2:
A kind of novel light element, as shown in figure 8, it is the difference from embodiment 1 is that in unit length section: light ease
It dissipates slot 12 and is equipped with multiple, 4 times of the sum of multiple 12 internal surface areas of light loss slot not less than Echo Wall blocking 13 internal surface area of slot.
In unit length section: multiple light loss slots 12 are arranged along the extending direction of light guide ontology 11.
The present embodiment has the advantage that
By the way that the different light loss slot 12 in multiple positions is arranged, so that light guide ontology 11 is in different location bendings
It can be transferred through the change luminous flux of light loss slot 12 and eliminate bending loss oscillatory occurences, play and improve applicability and be easy to use
Effect.
Embodiment 3:
A kind of novel light element, as shown in Figure 9 and Figure 10, the difference from example 2 is that in unit length section:
Light loss slot 12 is equipped with 3,3 12 being circumferentially arranged along light guide ontology 11 of light loss slot.
In unit length section: the Echo Wall blocks slot 13 to be equipped with 3, and the sum of 3 12 internal surface areas of light loss slot are not small
4 times of the sum of 13 internal surface area of slot are blocked in multiple Echo Walls, 3 light loss slot being circumferentially arranged along light guide ontology 11.
The present embodiment has the advantage that
Slot 13 is blocked by the way that the different light loss slot 12 in multiple positions and the Echo Wall is arranged, so that light guide ontology 11 exists
It can be transferred through light loss slot 12 when different location bending to change luminous flux and eliminate bending loss oscillatory occurences, play raising
Applicability and effect convenient to use.
Embodiment 4:
A kind of novel light element, as shown in figure 11, the difference from example 2 is that multiple light loss slots 12 and return
Sound wall blocks slot 13 to arrange along the extending direction of light guide ontology 11, and light loss slot 12 and the Echo Wall block 13 quantity phase of slot
Same and light loss slot 12 and the Echo Wall block slot 13 to be oppositely arranged two-by-two centered on light guide ontology 11.
The present embodiment has the advantage that
Slot 13 is blocked by the way that the different light loss slot 12 in multiple positions and the Echo Wall is arranged, so that light guide ontology 11 exists
It can be transferred through light loss slot 12 when different location bending or the Echo Wall block slot 13 to change luminous flux and eliminates bending loss
Oscillatory occurences plays and improves applicability and effect convenient to use.
Embodiment 5:
A kind of novel light element, as shown in figure 12, the difference from embodiment 1 is that outside 11 cross section of light guide ontology
Profile is integrally in rectangle.
The present embodiment has the advantage that
Selecting cross section outer profile is integrally in light guide ontology 11 of different shapes, and light guide ontology 11 can be made to be suitable for not
Same application achievees the effect that convenient to use to improve applicability.
This specific embodiment is only explanation of the invention, is not limitation of the present invention, those skilled in the art
Member can according to need the modification that not creative contribution is made to the present embodiment after reading this specification, but as long as at this
All by the protection of Patent Law in the scope of the claims of invention.
Claims (10)
1. current type compound bending sensor, it is characterised in that: including light emission component (21), light-receiving component (22) and have
The variation of photocon flexible, photocon luminous flux of photocon during compound bending has monotonicity,
The both ends for being installed on photocon that the light emission component (21) and light-receiving component (22) are fixed respectively, the light emitting group
Part (21) includes light-emitting component, and the light-receiving component (22) includes light receiving element, the light-emitting component and light receiving element
It is located at the both ends of photocon.
2. current type compound bending sensor according to claim 1, it is characterised in that: the light-emitting component is luminous quantity
The active light emissive device proportional with driving current.
3. current type compound bending sensor according to claim 2, it is characterised in that: the light-emitting component is luminous two
Pole pipe.
4. current type compound bending sensor according to claim 1, it is characterised in that: the light receiving element is in electricity
The proportional active light of the luminous flux that output electric current and light receiving element surface receive in the case that source voltage is constant is logical
Measure sensitive detection parts.
5. current type compound bending sensor according to claim 4, it is characterised in that: the light receiving element is photosensitive
Triode.
6. current type compound bending sensor according to claim 1, it is characterised in that: the light emission component (21) with
The first connector (15) are equipped between photocon, first connector (15) is solid, and first connector (15) sets
There is the first opening of receiving light emission component (21), first connector (15) is equipped with the one end for accommodating photocon and perforation
To the first connecting hole of the first opening, first connector (15) passes through with light emission component (21) and photocon saturating respectively
Bright bonding agent is rigidly bonded.
7. current type compound bending sensor according to claim 1, it is characterised in that: the light-receiving component (22) with
The second connector (16) are equipped between photocon, second connector (16) is solid, and second connector (16) sets
There is the second opening for accommodating light-receiving component (22), second connector (16) is equipped with the one end for accommodating photocon and perforation
To the second connecting hole of the second opening, second connector (16) passes through with light-receiving component (22) and photocon saturating respectively
Bright bonding agent is rigidly bonded.
8. described in any item current type compound bending sensors according to claim 1~7, it is characterised in that: the light guide member
Part includes light guide ontology (11), and the light guide ontology (11) is that refractive index is greater than 1 and has material flexible, the leaded light
Part ontology (11) includes at least one unit length section；
In the unit length section: the light guide ontology (11) is equipped with light loss slot (12) and the Echo Wall blocks slot
(13), the light loss slot (12) and the Echo Wall block slot (13) to extend along the length direction of light guide ontology (11), institute
Light loss slot (12) depth is less than light guide ontology (11) width 1/20 is stated, the Echo Wall blocks the depth of slot (13) not
More than the depth of light loss slot (12), light loss slot (12) internal surface area blocks slot (13) interior table not less than the Echo Wall
4 times of area, the light guide ontology (11) at least 1 at cross-section center be located at light loss slot (12) surface geometry center
On the line for blocking slot (13) surface geometry center with the Echo Wall；
Be equipped with covering (14) outside the light guide ontology (11), the light guide ontology (11), light loss slot (12) and time
Sound wall blocks slot (13) surface to be bonded with covering (14) inner surface, and covering (14) outer surface is smooth and continuous table
Face, the refractive index of the covering (14) are less than the refractive index of light guide ontology (11).
9. the preparation method of current type compound bending sensor, it is characterised in that: the following steps are included:
Interception photocon: its light flux variations during compound bending for intercepting suitable length have the light of monotonicity
Guiding element；
Installation connecting element: the photocon both ends are respectively put into the first connecting hole and the second connection of the first connector (15)
In second connecting hole of part (16), first connector (15) is Nian Jie using transparent bonding agent rigidity with photocon；
Installation light emission component (21): the light emission component (21) is put into the first opening, and makes the light-emitting component position
At one end of photocon, the light emission component (21) and the first connector (15) are rigidly viscous using transparent bonding agent
It connects；
Installation light-receiving component (22): the light-receiving component (22) is put into the second opening, and makes the light receiving element
At one end of photocon, the light-receiving component (22) and the first connector (15) are rigidly viscous using transparent bonding agent
It connects.
10. the preparation method of current type compound bending sensor according to claim 9, it is characterised in that: at described section
It is further comprising the steps of before the step of taking photocon:
Processing light guide ontology (11): material of the refractive index of suitable length greater than 1 is intercepted as out light guide ontology (11)；
Process light loss slot (12): in the outer surface process light loss slot (12) of the light guide ontology (11), and make
The light loss slot (12) extends along the length direction of light guide ontology (11), and light loss slot (12) depth, which is less than, to be led
The 1/20 of light part ontology (11) width；
Process the Echo Wall and block slot (13): in the outer surface of the light guide ontology (11), the processing Echo Wall blocks slot (13), and
So that the Echo Wall blocks slot (13) to extend along the length direction of light guide ontology (11), the Echo Wall blocks slot (13)
Depth is no more than the depth of light loss slot (12), and light loss slot (12) internal surface area blocks slot not less than the Echo Wall
(13) 4 times of internal surface area, the light guide ontology (11) at least 1 at cross-section center be located at light loss slot (12) surface
Geometric center and the Echo Wall block on the line at slot (13) surface geometry center；
It processes covering (14): using the process of spraying or coating in the production of light guide ontology (11) outer surface and light guide sheet
The covering (14) that body (11), light loss slot (12) and the Echo Wall block slot (13) outer surface to be bonded, the covering (14)
The refractive index of material is less than the refractive index of light guide ontology (11)；
Covering (14) surface treatment: covering (14) is extruded to shape or is cut or condensed or curing process and makes covering (14)
Outer surface is smooth and continuous.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910477749.8A CN110095086B (en) | 2019-06-03 | 2019-06-03 | Current type bidirectional bending sensor and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910477749.8A CN110095086B (en) | 2019-06-03 | 2019-06-03 | Current type bidirectional bending sensor and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110095086A true CN110095086A (en) | 2019-08-06 |
| CN110095086B CN110095086B (en) | 2024-06-07 |
Family
ID=67450131
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910477749.8A Active CN110095086B (en) | 2019-06-03 | 2019-06-03 | Current type bidirectional bending sensor and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110095086B (en) |
Citations (31)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE700094A (en) * | 1966-07-04 | 1967-12-18 | ||
| SU1318785A1 (en) * | 1985-08-06 | 1987-06-23 | Ярославский государственный педагогический институт им.К.Д.Ушинского | Sensing element of fibre-optical strain gauge |
| WO1994029671A1 (en) * | 1993-06-10 | 1994-12-22 | Danisch Lee A | Fiber optic bending and positioning sensor |
| WO1999013306A2 (en) * | 1997-09-05 | 1999-03-18 | University Of Portsmouth Enterprise Ltd. | An optical sensor for measuring forces applied to a body and items of clothing incorporating such sensors |
| WO2000068645A1 (en) * | 1999-05-11 | 2000-11-16 | Danisch Lee A | Fiber optic curvature sensor |
| CN1438504A (en) * | 2002-02-15 | 2003-08-27 | 欧姆龙株式会社 | Optical element and optical device using same |
| DE10315608A1 (en) * | 2003-04-05 | 2004-10-21 | Volkswagen Ag | Optical sensor with elongate light conducting element such as for deformation elements of a vehicle the sensor being made up of several film layers |
| JP2006301447A (en) * | 2005-04-22 | 2006-11-02 | Ricoh Co Ltd | Scanning line bending measurement apparatus and optical scanner |
| JP2006301178A (en) * | 2005-04-19 | 2006-11-02 | Fujikura Ltd | Bend sensor and its manufacturing method |
| CN101030819A (en) * | 2006-03-02 | 2007-09-05 | 三星电子株式会社 | Multi-wavelength bidirectional optical transceiver having monitors |
| CN101090778A (en) * | 2004-12-27 | 2007-12-19 | 株式会社阿玛达 | Workpiece bending angle detecting device and workpiece bending machine |
| JP2008190910A (en) * | 2007-02-01 | 2008-08-21 | Nagoya Institute Of Technology | Bending degree detection device and bending degree detecting method using it |
| JP2011180133A (en) * | 2010-02-03 | 2011-09-15 | Soka Univ | Optical fiber sensor and manufacturing method thereof |
| CN102499688A (en) * | 2011-11-28 | 2012-06-20 | 西北工业大学 | Optical fiber angle sensor for measuring structural angles |
| CN102538702A (en) * | 2011-12-16 | 2012-07-04 | 上海交通大学 | Side doped bent sensitivity-enhanced type optical fiber curvature sensor |
| CN104081166A (en) * | 2012-01-30 | 2014-10-01 | 奥林巴斯株式会社 | Optical sensor |
| CN104334070A (en) * | 2012-06-20 | 2015-02-04 | 奥林巴斯株式会社 | Curve sensor |
| CN104330032A (en) * | 2014-07-09 | 2015-02-04 | 国家电网公司 | Fiber displacement sensor, fiber displacement detection device and fiber for sensor |
| US20150097110A1 (en) * | 2012-06-21 | 2015-04-09 | Olympus Corporation | Light guide sensor, and method of forming light guide sensor |
| US20160081761A1 (en) * | 2013-06-07 | 2016-03-24 | Olympus Corporation | Shape sensor and tubular insertion system |
| US20160131813A1 (en) * | 2013-06-14 | 2016-05-12 | Koninklijke Philips N.V. | Light Emitting Device |
| CN105783781A (en) * | 2016-05-04 | 2016-07-20 | 中国计量大学 | Curvature sensor based on cladding mode interference with fiber Bragg grating |
| CN105955552A (en) * | 2016-06-01 | 2016-09-21 | 京东方科技集团股份有限公司 | Touch apparatus, touch method and curved surface display apparatus |
| CN205669992U (en) * | 2016-06-06 | 2016-11-02 | 南京工程学院 | A kind of optical fibre bending sensor of band the air gap |
| CN106413513A (en) * | 2014-05-29 | 2017-02-15 | 奥林巴斯株式会社 | Curvature sensor and endoscope device |
| US20170311775A1 (en) * | 2015-01-22 | 2017-11-02 | Olympus Corporation | Fiber Sensor System |
| US20170350774A1 (en) * | 2016-06-02 | 2017-12-07 | Mark B. Woodbury | Direct light bend sensor |
| US20170370697A1 (en) * | 2015-03-13 | 2017-12-28 | Olympus Corporation | Bending detecting system, light guide body, tubular apparatus, light detecting apparatus, light detecting method, and optical bending measuring apparatus |
| CN107613834A (en) * | 2015-05-29 | 2018-01-19 | 奥林巴斯株式会社 | Curvature sensor and the endoscope apparatus for being equipped with the curvature sensor |
| CN109655008A (en) * | 2019-01-08 | 2019-04-19 | 深圳麦格米特电气股份有限公司 | A kind of optical fibre bending sensor and the Intelligent glove including the optical fibre bending sensor |
| CN209820419U (en) * | 2019-06-03 | 2019-12-20 | 呜啦啦(广州)科技有限公司 | Current type bidirectional bending sensor |
-
2019
- 2019-06-03 CN CN201910477749.8A patent/CN110095086B/en active Active
Patent Citations (32)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE700094A (en) * | 1966-07-04 | 1967-12-18 | ||
| SU1318785A1 (en) * | 1985-08-06 | 1987-06-23 | Ярославский государственный педагогический институт им.К.Д.Ушинского | Sensing element of fibre-optical strain gauge |
| WO1994029671A1 (en) * | 1993-06-10 | 1994-12-22 | Danisch Lee A | Fiber optic bending and positioning sensor |
| WO1999013306A2 (en) * | 1997-09-05 | 1999-03-18 | University Of Portsmouth Enterprise Ltd. | An optical sensor for measuring forces applied to a body and items of clothing incorporating such sensors |
| WO2000068645A1 (en) * | 1999-05-11 | 2000-11-16 | Danisch Lee A | Fiber optic curvature sensor |
| CN1438504A (en) * | 2002-02-15 | 2003-08-27 | 欧姆龙株式会社 | Optical element and optical device using same |
| DE10315608A1 (en) * | 2003-04-05 | 2004-10-21 | Volkswagen Ag | Optical sensor with elongate light conducting element such as for deformation elements of a vehicle the sensor being made up of several film layers |
| CN101090778A (en) * | 2004-12-27 | 2007-12-19 | 株式会社阿玛达 | Workpiece bending angle detecting device and workpiece bending machine |
| JP2006301178A (en) * | 2005-04-19 | 2006-11-02 | Fujikura Ltd | Bend sensor and its manufacturing method |
| JP2006301447A (en) * | 2005-04-22 | 2006-11-02 | Ricoh Co Ltd | Scanning line bending measurement apparatus and optical scanner |
| CN101030819A (en) * | 2006-03-02 | 2007-09-05 | 三星电子株式会社 | Multi-wavelength bidirectional optical transceiver having monitors |
| JP2008190910A (en) * | 2007-02-01 | 2008-08-21 | Nagoya Institute Of Technology | Bending degree detection device and bending degree detecting method using it |
| JP2011180133A (en) * | 2010-02-03 | 2011-09-15 | Soka Univ | Optical fiber sensor and manufacturing method thereof |
| CN102499688A (en) * | 2011-11-28 | 2012-06-20 | 西北工业大学 | Optical fiber angle sensor for measuring structural angles |
| CN102538702A (en) * | 2011-12-16 | 2012-07-04 | 上海交通大学 | Side doped bent sensitivity-enhanced type optical fiber curvature sensor |
| CN104081166A (en) * | 2012-01-30 | 2014-10-01 | 奥林巴斯株式会社 | Optical sensor |
| CN104334070A (en) * | 2012-06-20 | 2015-02-04 | 奥林巴斯株式会社 | Curve sensor |
| US20150097110A1 (en) * | 2012-06-21 | 2015-04-09 | Olympus Corporation | Light guide sensor, and method of forming light guide sensor |
| US20160081761A1 (en) * | 2013-06-07 | 2016-03-24 | Olympus Corporation | Shape sensor and tubular insertion system |
| US20160131813A1 (en) * | 2013-06-14 | 2016-05-12 | Koninklijke Philips N.V. | Light Emitting Device |
| CN106413513A (en) * | 2014-05-29 | 2017-02-15 | 奥林巴斯株式会社 | Curvature sensor and endoscope device |
| CN104330032A (en) * | 2014-07-09 | 2015-02-04 | 国家电网公司 | Fiber displacement sensor, fiber displacement detection device and fiber for sensor |
| US20170311775A1 (en) * | 2015-01-22 | 2017-11-02 | Olympus Corporation | Fiber Sensor System |
| US20170370697A1 (en) * | 2015-03-13 | 2017-12-28 | Olympus Corporation | Bending detecting system, light guide body, tubular apparatus, light detecting apparatus, light detecting method, and optical bending measuring apparatus |
| CN107613834A (en) * | 2015-05-29 | 2018-01-19 | 奥林巴斯株式会社 | Curvature sensor and the endoscope apparatus for being equipped with the curvature sensor |
| US20180084977A1 (en) * | 2015-05-29 | 2018-03-29 | Olympus Corporation | Curvature sensor and endoscope apparatus equipped with the same |
| CN105783781A (en) * | 2016-05-04 | 2016-07-20 | 中国计量大学 | Curvature sensor based on cladding mode interference with fiber Bragg grating |
| CN105955552A (en) * | 2016-06-01 | 2016-09-21 | 京东方科技集团股份有限公司 | Touch apparatus, touch method and curved surface display apparatus |
| US20170350774A1 (en) * | 2016-06-02 | 2017-12-07 | Mark B. Woodbury | Direct light bend sensor |
| CN205669992U (en) * | 2016-06-06 | 2016-11-02 | 南京工程学院 | A kind of optical fibre bending sensor of band the air gap |
| CN109655008A (en) * | 2019-01-08 | 2019-04-19 | 深圳麦格米特电气股份有限公司 | A kind of optical fibre bending sensor and the Intelligent glove including the optical fibre bending sensor |
| CN209820419U (en) * | 2019-06-03 | 2019-12-20 | 呜啦啦(广州)科技有限公司 | Current type bidirectional bending sensor |
Non-Patent Citations (2)
| Title |
|---|
| 刘仁强 等: "新型智能结构中埋入式曲率光纤传感器的研究", 压电与声光, vol. 25, no. 04, pages 270 - 273 * |
| 狄海廷 等: "曲率光纤传感器传感原理和参数优化", 《光电子·激光》, vol. 22, no. 04, pages 507 - 511 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110095086B (en) | 2024-06-07 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107515054B (en) | Optical fiber temperature and refractive index measurement sensing device based on Michelson interferometer | |
| CN106645793A (en) | Flow velocity sensor based on polymer optical waveguide | |
| JPS6166936A (en) | Optical, electrical and mechanical device for measuring physical parameter | |
| CN111537119B (en) | High-precision fiber grating displacement meter with temperature compensation | |
| CN101922948A (en) | Multilayer high-precision optical fiber detector based on microbending loss | |
| CN102374913A (en) | Universal pressure sensing device based on optical fiber microbending loss | |
| CN110095086A (en) | Current type compound bending sensor and preparation method thereof | |
| CN209820419U (en) | Current type bidirectional bending sensor | |
| CN102374872A (en) | Optical fiber sensing device based on functional material | |
| CN209377556U (en) | Mini optical fibre pressure sensor and pressure capsule system | |
| CN109099847B (en) | Two-dimensional optical fiber displacement sensor based on macrobend loss effect and power coupling | |
| CN216012528U (en) | Transmission type fluorescent crystal optical fiber temperature probe and optical fiber temperature detection system | |
| CN209821425U (en) | Novel light guide element | |
| JP4862594B2 (en) | Optical fiber sensor | |
| CN201772993U (en) | Multilayer type high-precision fiber detector based on microbending loss | |
| CN218122314U (en) | Correlation type high transmission rate optical fiber light guide light beam | |
| CN201885836U (en) | General pressure sensing device based on optical fiber microbending loss | |
| CN102478410A (en) | Bamboo joint type quasi-distribution optical fiber sensor | |
| CN110108213A (en) | All diameter sensors and preparation method thereof | |
| CN205449322U (en) | Optical fiber grating sensor | |
| JP2021043052A (en) | Optical fiber sensor | |
| JP2016133491A (en) | Gas detection device | |
| CN111664811B (en) | Optical fiber angle sensor | |
| CN201903352U (en) | Optical fiber sensing device based on function materials | |
| CN1721822A (en) | Optical fiber resin current detection sensing unit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant |