CN104067093B - Fibre Optical Sensor - Google Patents
Fibre Optical Sensor Download PDFInfo
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- CN104067093B CN104067093B CN201380006245.9A CN201380006245A CN104067093B CN 104067093 B CN104067093 B CN 104067093B CN 201380006245 A CN201380006245 A CN 201380006245A CN 104067093 B CN104067093 B CN 104067093B
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- 239000000835 fiber Substances 0.000 title claims abstract description 60
- 230000003287 optical Effects 0.000 title claims abstract description 53
- 239000003365 glass fiber Substances 0.000 claims abstract description 188
- 230000001131 transforming Effects 0.000 claims abstract description 95
- 230000002093 peripheral Effects 0.000 claims abstract description 15
- 238000000465 moulding Methods 0.000 claims description 8
- 230000000875 corresponding Effects 0.000 claims description 6
- 238000001514 detection method Methods 0.000 abstract description 47
- 230000005540 biological transmission Effects 0.000 abstract description 7
- 239000011248 coating agent Substances 0.000 description 23
- 238000000576 coating method Methods 0.000 description 23
- 238000005452 bending Methods 0.000 description 17
- 230000001808 coupling Effects 0.000 description 10
- 238000010168 coupling process Methods 0.000 description 10
- 238000005859 coupling reaction Methods 0.000 description 10
- 238000010586 diagram Methods 0.000 description 7
- 235000015168 fish fingers Nutrition 0.000 description 6
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- 238000006243 chemical reaction Methods 0.000 description 2
- 108091006028 chimera Proteins 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000006096 absorbing agent Substances 0.000 description 1
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- 238000005516 engineering process Methods 0.000 description 1
- 238000005755 formation reaction Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000031700 light absorption Effects 0.000 description 1
- 230000000149 penetrating Effects 0.000 description 1
- 230000005622 photoelectricity Effects 0.000 description 1
- 230000002035 prolonged Effects 0.000 description 1
- 230000000284 resting Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Abstract
There is provided a kind of Fibre Optical Sensor, it is possible to easily differentiate position and the attitude in the curved detection portion arranged in Fibre Optical Sensor, it is possible to arrange exactly on the position of regulation.The optical fiber of the present invention has: light source；Optical fiber, has the light characteristic transformation component as curved detection portion；And light accepting part.Optical fiber includes the identification part along its length with the length of regulation.Light characteristic transformation component has the function that the characteristic to the light guided in optical fiber converts, and makes according to the situation of fiber kinks to change to the light transmission capacity of light accepting part.Identification part is formed as shape special compared with round-shaped on the outer peripheral face of optical fiber, and can differentiate the shape of at least one party arranged in position and attitude of the light characteristic transformation component arranged on optical fiber.Such Fibre Optical Sensor can arrange position and attitude by what identification part easily differentiated light characteristic transformation component, it is possible to arranges exactly on position specifying.
Description
Technical field
The present invention relates to the Fibre Optical Sensor (fiber sensor) that the change according to light quantity carrys out the bending of detection fiber.
Background technology
There is bending and the equipment of distortion of the subject of flexibility as detection, it is known that Fibre Optical Sensor.Fibre Optical Sensor
Utensil has light source, optical fiber and light accepting part.In general, optical fiber is all cylindrical shape in total length.
Such as, in patent documentation 1, disclose and possess the bending inspection with multiple light characteristic transformation component (curved detection portion)
The flexible endscope device of survey optical fiber.These light characteristic transformation components are the light absorption department as small defect portion or leaded light
Loss portion etc..On the position of the regulation on the surface of the strip-shaped members that detection optical fiber is configured in a piece of flexibility.Now, multiple
Curved detection portion is configured on the length direction of strip-shaped members at a prescribed interval, and identical multiple curved detection portions are by also
Row are arranged.
The insertion section that the light characteristic transformation component formed in detection optical fiber has according to subject, such as flexible endscope is soft
The bending of pipe and the direction of distortion and degree and make the function of light loss.That is, according to being the most at least configured with
The change of the light transmission capacity in the light characteristic transformation component of detects direction and the degree of bending.And then, creating torsion
In the case of song, according to the multiple light characteristic transformation components being set up in parallel, light transmission capacity produces difference, according to this light transmission capacity
Difference detect direction and the degree of distortion.
According to aforesaid multiple curved detection optical fiber, it is possible to the change of detection light quantity transmission capacity, thus judge subject
Bending and the direction of distortion and degree.Therefore curved detection optical fiber and light characteristic transformation component need to be joined exactly
Put and specifying on position.
Prior art literature
Patent documentation
Patent documentation 1: No. 4005318 publications of Japanese Patent Publication No.
Summary of the invention
According to patent documentation 1, optical fiber is utilized to pass for direction and the degree of the bending and distortion of knowing subject
Sensor.Aforesaid Fibre Optical Sensor is every time to subject configuration optical fiber time, owing to optical fiber is elongated shape, so being difficult to standard
Really determine light characteristic transformation component arranges position and attitude.And hence it is also possible to expect configuring accurately or adding requiring
In the case of work, operation becomes difficulty.For example, it is possible to enumerate in Fibre Optical Sensor formed light characteristic transformation component time, setting or
During assembling optical fiber sensor and use Fibre Optical Sensor time etc..
It is an object of the invention to, it is provided that can easily differentiate the light characteristic transformation component of setting in Fibre Optical Sensor
Position and attitude are set, it is possible to specifying the Fibre Optical Sensor arranging light characteristic transformation component on position exactly.
To this end, the Fibre Optical Sensor involved by embodiments of the present invention possesses: light source, penetrate light；Optical fiber, to from light source
The light of injection guides, and possesses at least one light characteristic transformation component, has flexibility；Light accepting part, accepts directed light；And
Identification part, is formed as following shape: this shape is shape special compared with round-shaped on the outer peripheral face of optical fiber, Er Qieshi
The shape of at least one party arranged in position and attitude of the light characteristic transformation component arranged on optical fiber can be differentiated.
Light characteristic transformation component has the function that the characteristic to light directed in optical fiber converts, according to fiber kinks
And make to change to the light transmission capacity of light accepting part.
In above-mentioned shown embodiment, it is provided that the light that light characteristic transformation component is set on position can specified exactly
Fiber sensor.
Fibre Optical Sensors based on embodiments of the present invention realize following effect: can easily differentiate that light characteristic converts
Portion arranges position and attitude, it is possible to arrange light characteristic transformation component on appointment position exactly.
Accompanying drawing explanation
Fig. 1 is the figure of the structure of the Fibre Optical Sensor conceptually representing the first embodiment.
Fig. 2 A is the synoptic diagram of the action of Fibre Optical Sensor.
Fig. 2 B is the synoptic diagram of the action of Fibre Optical Sensor.
Fig. 2 C is the synoptic diagram of the action of Fibre Optical Sensor.
Fig. 3 is to represent to be arranged on as tested the detection optical fiber portion of the Fibre Optical Sensor being provided with the first embodiment
The figure of one example of the parts such as the utensil of body.
Fig. 4 A is the figure in the cross section of the optical fiber representing the second embodiment.
Fig. 4 B is the figure of the cross sectional shape of the identification part of the optical fiber representing the second embodiment.
Fig. 4 C is the figure of the cross sectional shape of the identification part of the optical fiber representing the second embodiment.
Fig. 4 D is the figure of the cross sectional shape of the identification part of the optical fiber representing the second embodiment.
Fig. 4 E is the figure of the cross sectional shape of the identification part of the optical fiber representing the second embodiment.
Fig. 5 A is the figure of the different configuration example of the identification part of each optical fiber representing the 3rd embodiment.
Fig. 5 B is the figure of the different configuration example of the identification part of each optical fiber representing the 3rd embodiment.
Fig. 5 C is the figure of the different configuration example of the identification part of each optical fiber representing the 3rd embodiment.
Fig. 5 D is the figure of the different configuration example of the identification part of each optical fiber representing the 3rd embodiment.
Fig. 6 A is the figure of the cross sectional shape of the optical fiber representing the 3rd embodiment.
Fig. 6 B is the figure of the cross sectional shape of the identification part of the optical fiber representing the 3rd embodiment.
Fig. 7 A is the figure of an example of the cross sectional shape of the optical fiber representing the 3rd embodiment.
Fig. 7 B is the figure of an example of the cross sectional shape of each identification part of the optical fiber representing the 3rd embodiment.
Fig. 7 C is the figure of an example of the cross sectional shape of each identification part of the optical fiber representing the 3rd embodiment.
Fig. 7 D is the figure of an example of the cross sectional shape of each identification part of the optical fiber representing the 3rd embodiment.
Fig. 8 be the optical fiber of the 4th embodiment being fitted figure is set.
Fig. 9 A be the optical fiber of the 4th held embodiment figure is set.
Fig. 9 B be the optical fiber of the 4th held embodiment figure is set.
Detailed description of the invention
Hereinafter, the embodiment that present invention will be described in detail with reference to the accompanying.
[the first embodiment]
Fig. 1 is the figure of the structure of the Fibre Optical Sensor 1 conceptually representing the first embodiment.
As described later, such as by installing optical fiber biography along the subject as strip and the parts with flexibility
Sensor 1, thus detect the bending state of this subject, overbending direction.Additionally, when installing Fibre Optical Sensor 1 to subject, logical
Cross identification part 60 para-position that the sweep of subject is made as index location Fibre Optical Sensor 1, thus light characteristic is become
Change portion 50 to be arranged on the suitable position of subject.Hereinafter also it is referred to as subject by installing the article of Fibre Optical Sensor 1 etc..This
Outward, suitable position refers to, according to design or according to the position specified, hereinafter referred to as specify position.
As it is shown in figure 1, the Fibre Optical Sensor 1 of the first embodiment includes: injection detection light light source 10, have elongated
The light accepting part of the light that shape and the optical fiber 30 guiding the light penetrated from light source 10 and acceptance are guided by optical fiber 30
20.Light source 10 e.g. LED or LASER Light Source.Optical fiber 30 at least has core (core), it is possible to have coating portion.Such as, quilt
The portion of covering has covering (clad) and/or covering member.
Optical fiber 30 is by the optical fiber coupling part 35 that optical branch is being importing road and lead path is being branched into tripartite and each prolonged
Y shape detection optical fiber portion 31, light supply optical fiber portion 32 and the optical fiber for receiving light portion 33 stretched and formed are constituted.
Light supply optical fiber portion 32 is the importing road in optical fiber 30, is guided by the light penetrated from the light source 10 being arranged on end
To optical fiber coupling part 35.
Detection optical fiber portion 31 follows the flexible action of subject, has the end face (reflecting part) 34 of reflection light in front end
Deng and make light come and go.That is, by guiding to end face 34 from the light supply light in optical fiber portion 32 via optical fiber coupling part 35, and will
Reflection light in the reflection of this end face 34 guides as being back to optical fiber coupling part 35.
Optical fiber for receiving light portion 33 is the lead path in optical fiber 30, guides at end face 34 anti-to the light accepting part 20 being arranged on end
Penetrate and at the reflection light of optical fiber coupling part 35 branch.
Detection optical fiber portion 31 have the light characteristic transformation component 50 as curved detection portion, be shaped to be prone to differentiate position with
And the identification part 60 of shape.The detection optical fiber portion 31 of present embodiment can be specified by identification part 60 and arrange light characteristic and become
That changes portion 50 arranges position and attitude.
The light characteristic transformation component 50 of present embodiment has the function that the characteristic to directed light converts.E.g.
Guide-lighting loss portion or wavelength conversion section.Such as, if guide-lighting loss portion is then absorber of light, if wavelength conversion section then can be lifted
Go out fluorophor etc..In the present embodiment, light characteristic transformation component processes as leaded light loss portion.
Identification part 60 is arranged on the part of the regulation in detection optical fiber portion 31, has the length and width of regulation.Here,
The part of regulation refers to, i.e. hope in detection optical fiber portion 31 detects the part of bending, is such as set to the neighbouring portion of end face 34
Point or from the part etc. of end face 34 any distance.Need to grasp the most exactly the position of this part.Additionally, light characteristic
The length and width of the regulation of transformation component refers to, in the case of the light that propagation is next reaches this light characteristic transformation component, makes light quantity
Change is so as to suitably detect the length and width of bending.That is, light characteristic transformation component has in the part connected with core
The area that light quantity changes suitably is made during fiber kinks.
Identification part 60 is shaped to the cross sectional shape different from adjacent part.Here, cross sectional shape is defined as and optical fiber
The shape in the face that the length direction of 30 is vertical.In general, the cross sectional shape of optical fiber is round-shaped.Such as, as it is shown in figure 1,
Optical fiber 30 has round-shaped at the cross sectional shape of section A-A, and the cross sectional shape as the section B-B of identification part 60 has ellipse
Toroidal.Now, the cross sectional shape beyond identification part 60 is identical with the cross sectional shape of section A-A.It addition, light characteristic transformation component
50 and identification part 60 can also be arranged on light supply optical fiber portion 32 and/or optical fiber for receiving light portion 33.Additionally, light characteristic becomes
Change portion 50 and identification part 60 and can also be respectively set at some.
From the light of light source 10 irradiation via light supply optical fiber portion 32, optical fiber coupling part 35 and detection optical fiber portion 31 quilt
Guide, reflect at reflecting part 34.This reflecting part 34 reflection reflection light as detection light, optical fiber coupling part 35 points
, directed in optical fiber for receiving light portion 33 and arrive light accepting part 20.Light accepting part 20 carries out photoelectricity change to the detection light received
Changing, output represents the signal of telecommunication of light quantity.
Fig. 2 A, Fig. 2 B and Fig. 2 C are the synoptic diagram of the action of Fibre Optical Sensor 1 respectively.
In the present embodiment, directed in optical fiber 30 detection light produces loss in light characteristic transformation component 50.As
Shown in Fig. 2 A to C, this leaded light loss amount changes according to direction and the amount of the bending in detection optical fiber portion 31.
In fig. 2b, even if detection optical fiber portion 31 is the state of linearity, also according to the opening of light characteristic transformation component 50
Area and lose a certain degree of light quantity by light characteristic transformation component 50.In the case of the loss amount of this light is set to benchmark,
Such as, as shown in Figure 2 A, outside on the overbending direction in the detection optical fiber portion 31 being configured in bending at light characteristic transformation component 50
Time on side face, produce than the guide-lighting loss amount more guide-lighting loss amount being set to benchmark in Fig. 2 B.On the contrary, as shown in Figure 2 C, exist
Time on inner peripheral surface on the overbending direction in the detection optical fiber portion 31 that light characteristic transformation component 50 is configured in bending, produce ratio Fig. 2 B
In be set to the guide-lighting loss amount that the guide-lighting loss amount of benchmark is less.
The change of this leaded light loss amount is reflected to the detection light quantity accepted by light accepting part 20.That is, it is reflected to light
The output signal in portion 20.Thus, it is possible to according to the output signal of light accepting part 20, grasp Fibre Optical Sensor 1, i.e. subject and arranging
Overbending direction on the position of light characteristic transformation component 50 and bending amount (angle).
According to present embodiment, owing to visually knowledge can be differentiated with in sense of touch in the optical fiber with elongated shape
Other portion 60, thus device and/or user etc. can easily grasp light characteristic transformation component 50 position and attitude are set.
I.e., it is possible to easily optical fiber 31 is arranged appointment position with the attitude specified.Such as, it is intended that position refers to the bending of subject
Portion.
Fig. 3 is to represent to be arranged on as utensil the detection optical fiber portion 31 of the Fibre Optical Sensor being provided with present embodiment
The figure of one example of the subject 110 of parts such as (fixtures).
In this embodiment, there is at least one bending place in the installation place in detection optical fiber portion 31, give the mark α of bending place.
By carrying out the location of Fibre Optical Sensor on the basis of this mark α, it is possible to install on the position according to design.That is, exist
Lay identification part 60 in crooked place α of subject 110, thus the light characteristic transformation component 50 of optical fiber 1 is arranged on and pacifies accurately
On holding position.Additionally, such as by arranging the jut chimeric with identification part 60 in crooked place α, it is possible to it is easier to and accurate
Detection optical fiber portion 31 really is installed.
And then, it is possible to easily regulation detection optical fiber portion 31 arranges attitude relative to subject 110.I.e., it is possible to examine
That considers light characteristic transformation component 50 arranges position and attitude, with attitude freely and be easy to set up detection optical fiber portion 31.?
This, light characteristic transformation component 50 the part that position is the regulation in detection optical fiber portion 31 is set, and represent and make at optical fiber
The light loss of middle guiding and the position of peristome that spills.The attitude that arranges in detection optical fiber portion 31 refers to such as add following moving
Make setting, this action be by detection optical fiber portion 31 to rotate in a circumferential direction and be arranged at subject situation or be wound around
Action in the situation that the mode of subject is arranged etc..Additionally, the attitude of light characteristic transformation component 50 refers to the opening of this peristome
Direction, the direction i.e. radiated from the light of fiber loss, its direction is not specifically limited.
And then, additionally, identification part 60 can act as Working position when processing (cutting etc.) of light characteristic transformation component 50
Mark.That is, the precision arranging processing of light characteristic transformation component 50 is improved.Thus, owing to light characteristic transformation component 50 is according to setting
Meter and processing is set, it is possible to exactly grasp light characteristic transformation component 50 position is set.
It addition, identification part 60 can also with light characteristic transformation component 50 to arrange position inconsistent.For instance, it is possible to will know in advance
The shape in other portion 60 is set up with the position of light characteristic transformation component 50 and/or attitude and is associated, thus grasps light characteristic transformation component 50
Position and attitude.
Additionally, the most do not limit between the detection light from light source and the detection light to light accepting part
Branch and/or the structure of separation and method.
In the present embodiment, illustrate that there is optical fiber coupling part as an example, reflect light at end face (reflecting part),
Make importing in one optical fiber (detection optical fiber portion) and derive the structure example of contact, but being not limited to this.The most certainly can also
Being readily applied to the Fibre Optical Sensor etc. of light-guiding type, the Fibre Optical Sensor of described light-guiding type has and is arranged on Fibre Optical Sensor
The light source of one end, light source and light accepting part are connected and to penetrating, from light source, optical fiber that light guides and being arranged on
With the light accepting part of the other end of the opposition side of light source, and these parts linearly shape is configured.
[the second embodiment]
Then, the second embodiment is described.The Fibre Optical Sensor of present embodiment and the biography of aforesaid first embodiment
Inductor configurations is identical, but the differences such as the shape of identification part.
That is, present embodiment represents an example of the shape about the identification part 60 in Fig. 1, the identification part of present embodiment
60b, 60c, 60d, 60e are the most common with the structural element of the identification part 60 of Fig. 1 and position respectively.In present embodiment
In the reference of structural element, identical to the structural element imparting common with the structural element of aforesaid first embodiment
Reference, omits detail explanation.
Fig. 4 A, Fig. 4 B, Fig. 4 C, Fig. 4 D and Fig. 4 E are the figure in the cross section of the optical fiber representing present embodiment respectively.Fig. 4 A
Represent the cross sectional shape of the section A-A of Fig. 1.Fig. 4 B to E is the cross section i.e. cross section of section B-B of the identification part 60 representing Fig. 1
The figure of one example of shape.
The optical fiber of present embodiment has not in the identification part of the optical fiber of the common structure as the first embodiment
Some of the identification part 60b to 60e of same shape.Identification part 60b to 60e be respectively provided with light characteristic transformation component 50b, 50c,
Corresponding some among 50d, 50e, the core 130 that light is guided and coating portion 140b, 140c, 140d, 140e it
In corresponding some.Core 130 is common structure in each identification part 60b to 60e.
Light characteristic transformation component 50b to 50e is separately arranged as being consistent and shape with the peripheral shape being coated to portion 140b to 140e
Become, and connect with core 130.Coating portion 140b to 140e is respectively provided with at least one in covering and covering member.Therefore, it is possible to become
Type each identification part 60b to 60e and do not make the cross sectional shape of core 130 change.It addition, the cross sectional shape of core 130 is round as an example
Shape shape but it also may be not round-shaped.
In the present embodiment, as shown in Figure 4 A, the identification part 60b to 60e being shaped to special shape in each optical fiber
It is round-shaped that part in addition is shaped to cross sectional shape.Additionally, it is circle that optical fiber 30 is shaped to the cross sectional shape with section B-B
Shape shape compares special shape.
Then, with reference to Fig. 4 B to E, an example of the shape of section B-B is described.
Fig. 4 B is the figure of the section B-B that cross sectional shape is elliptical shape representing identification part.
As shown in Figure 4 B, in the 60b of identification part, the peripheral shape of coating portion 140b becomes the side of elliptical shape with cross sectional shape
Formula is formed.Owing to the peripheral shape in the coating portion 140 of optical fiber 31 is round-shaped, so being prone to the periphery in coating portion 140
Shape is shaped to elliptical shape.Now, different owing to being only configured with the peripheral shape of the part of identification part 60b, it is possible to
Easily differentiate.
Additionally, due to elliptical shape has major axis and short axle, it is possible to easily prescribed direction.Thus, it is possible to easily
Ground grasp optical fiber attitude is set.I.e., it is possible to that easily grasps light characteristic transformation component 50b arranges position and attitude.Such as,
The upside of elliptical shape it is disposed towards, it is possible to according to specify by grasping the peristome of light characteristic transformation component 50b in advance
Attitude arranges optical fiber.
Fig. 4 C is the figure of the section B-B that cross sectional shape is rectangular shape representing identification part.
As shown in Figure 4 C, in the 60c of identification part, the peripheral shape of coating portion 140c becomes the side of rectangular shape with cross sectional shape
Formula is formed.The periphery in the coating portion 140 of optical fiber is processed (cutting etc.) on 4 limits such that it is able to easily molding cuts
Face is shaped as the optical fiber of rectangular shape.Now, owing to only defining the shape of the part of identification part 60c on the length direction of optical fiber
Difference, it is possible to easily differentiate the identification part 60 on optical fiber.
Additionally, in the case of rectangular shape is rectangular, rectangle has long limit and minor face, it is possible to easily advise
Determine direction.Thus, it is possible to easily grasp optical fiber 30 attitude is set.I.e., it is possible to easily grasp light characteristic transformation component 50
Position and attitude are set.Such as, it is disposed towards rectangle and cuts by grasping the peristome of light characteristic transformation component 50 in advance
The long leg in face divides or short side part, it is possible to optical fiber 30 is set to the attitude specified.
Fig. 4 D is to represent that cross sectional shape is to be combined with round-shaped and rectilinear form runway (track) shape (straw bag shape
Shape) the figure of section B-B.Run-track shaped or straw bag shape refers to become and is combined with two curve forms and two planar shaped
The cross sectional shape of the straw bag shape of shape, is the shape that is provided parallel to face of the upper and lower sides in cylindrical shape.Hereinafter, will be as Fig. 4 D
Shape the most run-track shaped.As shown in Figure 4 D, in the 60d of identification part, the peripheral shape of coating portion 140d becomes with cross sectional shape
Run-track shaped mode is formed.It is plane by 2 limits of the periphery in the coating portion 140 of optical fiber 31 are processed (cutting etc.), from
And easily can be shaped as run-track shaped optical fiber 30 by contoured cross-section.In the case of this shape, be plane and curved surface alternately
The shape connected, it is possible to easily differentiate the identification part 60 on optical fiber.
Additionally, due to have round-shaped part and rectangular shape part, if on the basis of planar section, then can be easy
Ground prescribed direction.Thus, it is possible to easily grasp optical fiber 30 attitude is set.I.e., it is possible to easily grasp light characteristic transformation component
50 position and attitude are set.Such as, set in the part of the regulation of planar section or curvature portion by resting in advance
It is equipped with light characteristic transformation component 50, it is possible to optical fiber 30 is set according to the direction specified.
Fig. 4 E is the figure of the section B-B representing that cross sectional shape is breaded fish stick shape.
Breaded fish stick shape refers to combinatorial cylinders face and planar portions and the shape that obtains.As shown in Figure 4 D, in the 60e of identification part,
The peripheral shape of coating portion 140e is formed in the way of cross sectional shape becomes breaded fish stick shape.To the coating portion 140 of optical fiber 31
Periphery is processed (cutting etc.), by forming two parallel planes, it is possible to easily contoured cross-section is shaped as run-track shaped
Optical fiber 30.Now, by arranging planar portions, it is possible to easily differentiate the identification part 60 on optical fiber.
Additionally, by face on the basis of planar portions, it is possible to easily prescribed direction.Thus, it is possible to easily grasp optical fiber
The setting direction of 30.I.e., it is possible to that easily grasps light characteristic transformation component 50 arranges position and attitude.Such as, by advance
Grasp and on the position of regulation, be provided with light characteristic transformation component 50 on the basis of planar portions, it is possible to light is set according to the direction specified
Fine 30.
According to present embodiment, identification part 60b to 60e can be easily from the optical fiber processing of round-shaped cross sectional shape
(cutting etc.).Additionally, due to identification part 60b to 60e is formed as special shape, it is possible to easily differentiate setting of optical fiber
Seated position and attitude.I.e. it is easy to ground grasp the light characteristic transformation component 50 that formed in optical fiber position and attitude are set.
It addition, the cross sectional shape of identification part 60 is not limited to the shape shown in present embodiment.As long as easily differentiating knowledge
Arrange position, opening direction and the shape in other portion 60 are then not specifically limited.
[the 3rd embodiment]
Then, the 3rd embodiment is described.
The Fibre Optical Sensor of present embodiment is equal with the sensor structure of aforesaid first and second embodiment, but configuration
And configure the differences such as number.That is, present embodiment represents the configuration about the identification part 60 in the optical fiber 30 of Fig. 1 and configuration number
An example, the structural element of optical fiber 30a, 30b, 30c, 30d and position are the most common with the optical fiber 30 of Fig. 1.In this enforcement
In the reference of the structural element of mode, the structural element common with the structural element of aforesaid first embodiment is given
Identical reference, omits detail explanation.
Fig. 5 A, Fig. 5 B, Fig. 5 C and Fig. 5 D are the identification part 60 of the optical fiber 30a to 30d representing present embodiment respectively
The figure of different configuration examples.
The Fibre Optical Sensor of present embodiment has some and the light of light source, optical fiber 30a, 30b, 30c, 30d
Portion.Optical fiber 30a to 30d is made up of core and coating portion respectively.
Fig. 6 A is the figure of an example of the cross sectional shape of the cross section C-C of the optical fiber representing present embodiment.Fig. 6 B is to represent this
The figure of one example of the cross sectional shape of the cross section D-D of the identification part of the optical fiber of embodiment.Fig. 7 A is the light representing present embodiment
The figure of one example of the cross sectional shape of fine cross section E-E, Fig. 7 B, Fig. 7 C and Fig. 7 D are optical fiber each representing present embodiment
The figure of one example of the cross sectional shape of identification part.Such as, as shown in Figure 6A, coating portion 141 is by covering 141a and covering member 141b structure
Become.Similarly, as shown in Figure 6A, the coating portion 142 of the cross section C-C of the optical fiber of Fig. 5 A is by covering 142a and covering member 142b structure
Become.And then, as shown in Fig. 7 A to D, coating portion 143,144,145,146 is respectively by covering 143a, 144b, 144c, 144d and quilt
Cover part 144a, 144b, 144c, 144d to constitute.There is common structure in coating portion 141 to 146.It addition, cutting shown by Fig. 7 A to D
Face is shaped as an example, it is also possible to be other cross sectional shapes respectively.Additionally, coating portion 141 and 142 or coating portion 143 to
146 can also be variform specification respectively, it is also possible to be identical specification.Additionally, in the situation of the identical specification of shape
Under, such as can sentence molding otherwise so that the diameter in coating portion is dispar.
In the present embodiment, the cross sectional shape of each optical fiber part beyond identification part 61,62,63,64 is circular shape
Shape.It addition, the cross sectional shape of the shape of each optical fiber of Fig. 5 A to D and identification part 61 to 64 can also be different shape, only
Want to differentiate, can also be same shape.
Optical fiber 30a to 30d is respectively provided with among not shown light supply optical fiber portion, detection optical fiber portion 31a to 31d
Corresponding some, not shown optical fiber for receiving light portion, not shown optical fiber coupling part and reflecting part 34a, 34b, 34c,
Corresponding some among 34d.It is common with the reflecting part 34 of the first embodiment respectively at this reflecting part 34a to 34d
Structure.
Detection optical fiber portion 31a to 31d is respectively provided with a certain of the correspondence among light characteristic transformation component 51,52,53,54
Corresponding some among individual and identification part 61 to 64.It addition, light characteristic transformation component 51 to 54 and identification part 61 to 64
Light supply optical fiber portion and/or detection optical fiber portion can also be respectively set at.Light characteristic transformation component 51 to 54 respectively with
The mode that core 130 connects is set.
The cross sectional shape of optical fiber 30a to 30d is shaped to become special compared with round-shaped in identification part 61 to 64 respectively
Shape.Such as, as shown in Figure 6B, the coating portion 142 of identification part 61 is made up of covering 142a and covering member 142b.Identification part 61
Covering member 142b be shaped to the round-shaped different elliptical shape of peripheral shape and Fig. 6 A.
The cross sectional shape of identification part 61 to 64 be shaped to the cross sectional shape as shown in the second embodiment respectively easy
The shape differentiated.Such as, the cross sectional shape of identification part 61 to 64 be shaped to respectively elliptical shape, rectangular shape, run-track shaped or
Person's breaded fish stick shape.In the present embodiment, in order to make optical transmission characteristics not change, the cross sectional shape of core 130 is in the total length of optical fiber
Upper for positive round shape.Additionally, the cross sectional shape of identification part 61 to 64 be shaped to respectively with identification part 61 to 64 beyond part
The area of cross sectional shape is identical.
Then, the configuration of each identification part 61 to 64 is described.
Fig. 5 A is the configuration figure of the identification part of the part formation of the periphery of optical fiber.
As shown in Figure 5A, in optical fiber 30a, identification part 61 arranges position at least be covered in light characteristic transformation component 51
The mode of a part is formed on the periphery of optical fiber 30a.Such as, as shown in Fig. 6 A, B, position is set at light characteristic transformation component 50a
The cross section C-C put and cross section D-D, cross sectional shape can be different, or can also be identical.Here, it is identical at cross sectional shape
In the case of, molding otherwise can be sentenced mutually with other parts of optical fiber so that the diameter in cross section is dispar.
By such configuration, it is possible to that grasps light characteristic transformation component 51 arranges position and attitude.Additionally, such as, also
Identification part 61 can be used as to process optical fiber 30a mark during (cutting etc.) light characteristic transformation component 51.It addition, aforementioned and
In embodiment described later, it is also possible to application identification part is as mark when light characteristic transformation component is processed (cutting etc.).
And then, change the shape of identification part 60a according to the arranging position and/or attitude of light characteristic transformation component 51 at inside of optical fibre,
It is thus possible to grasp optical fiber 30a cross section in light characteristic transformation component 51 attitude is set.Such as, in fig. 6b, in identification part
In the case of 61 are elliptical shape, by grasping the peristome of light characteristic transformation component 51 in advance with the downside towards elliptical shape
Mode is formed such that it is able to arranged with the attitude specified by optical fiber 30a according to the shape of identification part 61.And then, now, by
In the direction of optical fiber 30a, regulation becomes easy, it is possible to arrange optical fiber 30a with the attitude being consistent with subject (not shown).
Fig. 5 B is the skeleton diagram of optical fiber 30b.
As shown in Figure 5 B, identification part 62 is set in the total length of optical fiber 30b.That is, the cross sectional shape of optical fiber 30b is in total length
On be of similar shape.Thus, by the attitude of light characteristic transformation component 52 is specified by each shape such that it is able to hold
Change places and grasp the attitude of light characteristic transformation component 52.
Additionally, due to shape is identical in total length, so the handling ease of optical fiber 30b.And then, additionally, due to optical fiber 30b
Direction regulation become easy, it is possible to arrange optical fiber 30b with the attitude being consistent with subject (not shown).
Fig. 5 C is the skeleton diagram of the optical fiber 30c of the multiple identification parts 63 of molding on the different position on outer peripheral face.
As shown in Figure 5 C, the cross sectional shape by multiple identification parts 63 is formed in the way of becoming same shape.Additionally, multiple knowledges
Other portion 63 respectively on different positions with molding at equal intervals.In the present embodiment, owing to multiple identification parts 63 are arranged one
Individual light characteristic transformation component 53, it is possible to hold by differentiating some of the multiple identification parts 63 formed on the periphery of optical fiber 30c
Change places and grasp the attitude of light characteristic transformation component 53.Thus, by the shape of each identification part 63 by the appearance of light characteristic transformation component 53
State is specified by each shape such that it is able to easily grasp the attitude of light characteristic transformation component 53.Additionally, such as, by covering
The mode from some position of Qi Shuo identification part, end 63 that is placed on arranges light characteristic transformation component 53, thus can also easily slap
Hold the position of light characteristic transformation component 53.And then, additionally, due to optical fiber 30c direction regulation become easy, it is possible to with quilt
The attitude that a corpse or other object for laboratory examination and chemical testing (not shown) is consistent arranges optical fiber 30c.
Fig. 5 D is the position with the light characteristic transformation component 54 different by each cross sectional shape and the optical fiber 30d of attitude configuration
Skeleton diagram.
Detection optical fiber portion 31d have multiple identification part 64a, 64b, 64c and multiple light characteristic transformation component 54a, 54b,
54c.Multiple identification part 64a to 64c are respectively to be covered at least some of of the scope that arranges of light characteristic transformation component 54a to 54c
Mode be molded on the periphery of optical fiber 30d.Multiple identification parts 64 are respectively provided with different shapes.
Such as, Fig. 7 A is the figure of cross sectional shape of the cross section E-E representing Fig. 5 D.As shown in Figure 7 A, know in optical fiber 30d
Part beyond other portion 64 is round-shaped.Fig. 7 B is the cross sectional shape of the cross section F-F of the identification part 64a representing Fig. 5 (d)
Figure.The cross section F-F of identification part 64a is elliptical shape.And then, Fig. 7 C is cutting of the cross section G-G of the identification part 64b representing Fig. 5 D
The figure of face shape.The cross section G-G of identification part 64b is rectangular shape.Fig. 7 B is the cross section H-of the identification part 64c representing Fig. 5 D
The figure of the cross sectional shape of H.The cross section H-H of identification part 64c is run-track shaped.So, identification part 64a to 64c in optical fiber 31d
The peripheral shape of covering member 144 to 146 be formed as different shapes respectively.
Position according to these multiple identification parts and shape, it is possible to easily grasp the every of multiple light characteristic transformation component 54
The position of one and attitude.That is, according to the position of these identification parts 64, it is possible to easily differentiate multiple light characteristic transformation component 54
Length direction on position is respectively set.Additionally, according to the shape of these each identification parts 64, it is possible to easily differentiate each light characteristic
Transformation component 54 position and attitude are set.
Additionally, each configuration section at multiple light characteristic transformation components 54 has only at one and on the length direction of each optical fiber
Adjacent part variform shape in the case of, it is possible to more accurately grasp light characteristic transformation component 64 attitude.Example
As, the cross sectional shape in identification part 64 is breaded fish stick shape, and adjacent part be round-shaped in the case of, by breaded fish stick shape
The planar section of shape arranges light characteristic transformation component, it is possible to that grasps light characteristic transformation component more accurately arranges attitude.And then, this
Time, owing to the direction of optical fiber 30d specifies to become easy, it is possible to arrange optical fiber d with the attitude being consistent with subject (not shown).
According to present embodiment, by the configuration of identification part 61 to 64, it is possible to more easily grasp each light characteristic transformation component
The position of 61 to 64 and attitude.
It addition, present embodiment does not limit the configuration of identification part.As long as the configuration of identification part can easily be differentiated, then
It can also be any configuration.
[the 4th embodiment]
Then, the 4th embodiment is described.
The Fibre Optical Sensor of present embodiment is common with the Fibre Optical Sensor of aforesaid first, second and third embodiment
Structure, but the difference such as the function of identification part and shape.In the reference of the structural element of present embodiment, to aforementioned
The common structural element of the structural element of the first embodiment give identical reference, omit detail explanation.
In order to be easier to chimeric with subject or held compared with the identification part of aforesaid embodiment, present embodiment
Identification part 65 there is the recess fixing with gomphosis part or hold assembly etc..Reflecting part 340 in present embodiment by with
The structural element that the reflecting part 34 of the first embodiment is common is constituted.
Fig. 8 be optical fiber 300 figure is set.Being arranged on by optical fiber 300, there is the tested of the protuberance 211 as gomphosis part
In the case of in body 210, it is possible to identification part 65 is fitted together to or is connected to protuberance 211 and arranges.Additionally, identification part 65 is used as
The mark of the part being fitted together to or abut.May be reversed it addition, concavo-convex in identification part 65 and subject.Similarly, aforementioned
Other embodiments in, for example, it is also possible to be than identification part beyond the race of the most round-shaped projection of cross sectional shape of optical fiber
Identification part as road shape.In the case of identification part 65 is protuberance, it is arranged on and there is the recess as gomphosis part
Subject, shall not be applied to the subject with hold assembly.
Fig. 9 A and Fig. 9 B be the optical fiber 300 of held present embodiment figure is set.Being arranged on, there is holding part
In the case of the subject 220 of 221, it is possible to utilize identification part 65 as bearing.Additionally, identification part 61a is also act as being pressed from both sides
The mark of the part held.
According to present embodiment, for having the subject 210,220 of gomphosis part or hold assembly, it is possible to accurately and
Optical fiber 300 is reliably set.Thus, by having the identification part 65 of the recess fixing with gomphosis part or hold assembly etc.,
Thus improve the accuracy of detection of Fibre Optical Sensor.
It addition, the identification part 65 with the recess fixing with gomphosis part or hold assembly etc. can also be set many
Individual.Additionally, position is set can also being covered in reflecting part 340 of identification part 65.
Embodiments described above is not intended to shape and the configuration of Fibre Optical Sensor.
Description of reference numerals:
1 ... Fibre Optical Sensor, 10 ... light source, 20 ... light accepting part, 30,30a, 30b, 30c, 30d, 300 ... light
Fibre, 31,31a, 31b, 31c, 31d ... detection optical fiber portion, 32 ... light supplies the optical fiber portion that uses, 33 ... optical fiber for receiving light
Portion, 34,34a, 34b, 34c, 34d, 340 ... reflecting part, 35 ... optical fiber coupling part, 50,50a, 50b, 50c, 50d, 51d,
52d, 53d ... light characteristic transformation component, 60,60b, 60c, 60d, 60e, 61,62,63,64,64a, 64b, 64c, 63d ... know
Other portion, 110,210,220 ... subject, 130 ... core, 140,140b, 140c, 140d, 140e, 141 ... coating portion,
141a, 142a, 143a, 144a, 145a, 146a ... covering, 141b, 142b, 143b, 144b, 145b, 146b ... coating
Part, 211 ... protuberance, 221 ... clamping part.
Claims (11)
1. a Fibre Optical Sensor, it is characterised in that possess:
Light source；
There is the optical fiber of flexibility, the light irradiated from described light source is guided, possesses at least one light characteristic transformation component；
Light accepting part, accepts the light by described fiber guides；And
Identification part, on the length direction of described optical fiber, is formed as following on the position corresponding with described light characteristic transformation component
Shape: this shape is the shape that part that the cross sectional shape vertical from length direction of described optical fiber is adjacent with described optical fiber is different
Shape, and be can differentiate the described light characteristic transformation component arranged on described optical fiber arrange in position and attitude at least
The shape of one side.
2. Fibre Optical Sensor as claimed in claim 1, it is characterised in that
At least one party arranged in position and attitude of the shape of described identification part and described light characteristic transformation component is built in advance
Vertical association, so as to that grasps the shape of described identification part and described light characteristic transformation component arranges in position and attitude extremely
Relation between a few side.
3. Fibre Optical Sensor as claimed in claim 1, it is characterised in that
Described identification part the circumferential lateral surface of described optical fiber have will appreciate that described light characteristic transformation component arrange position and
The planar portions of at least one party in attitude.
4. Fibre Optical Sensor as claimed in claim 3, it is characterised in that
The mode that described identification part becomes, with the peripheral shape of described optical fiber, the shape making a columnar part as planar portions becomes
Type.
5. Fibre Optical Sensor as claimed in claim 3, it is characterised in that
The attitude of the described optical fiber being formed with described light characteristic transformation component become with the direction being formed with described planar portions consistent or
Opposite directions.
6. Fibre Optical Sensor as claimed in claim 3, it is characterised in that
The molding in the way of being covered in the part that position is set of described light characteristic transformation component of described identification part.
7. Fibre Optical Sensor as claimed in claim 1, it is characterised in that
The molding in the way of being covered in the part that position is set of described light characteristic transformation component of described identification part.
8. Fibre Optical Sensor as claimed in claim 1, it is characterised in that
Length direction on the outer peripheral face of described optical fiber, forms multiple described identification part on the most different positions.
9. Fibre Optical Sensor as claimed in claim 8, it is characterised in that
The molding in the way of direction is consistent of the plurality of identification part.
10. Fibre Optical Sensor as claimed in claim 1, it is characterised in that
Gomphosis part or hold assembly that identification part is had by subject are fixed on subject.
11. Fibre Optical Sensors as claimed in claim 10, it is characterised in that
The part of either one in described subject and described identification part has protuberance, and the part of the opposing party has recessed
Portion,
By described recess and described protuberance, described identification part is fixed on described subject.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2012-013285 | 2012-01-25 | ||
| JP2012013285A JP6234005B2 (en) | 2012-01-25 | 2012-01-25 | Fiber sensor |
| PCT/JP2013/051636 WO2013111872A1 (en) | 2012-01-25 | 2013-01-25 | Fiber sensor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104067093A CN104067093A (en) | 2014-09-24 |
| CN104067093B true CN104067093B (en) | 2016-11-30 |
Family
ID=
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5633494A (en) * | 1991-07-31 | 1997-05-27 | Danisch; Lee | Fiber optic bending and positioning sensor with selected curved light emission surfaces |
| CN201780103U (en) * | 2010-07-07 | 2011-03-30 | 李素贞 | Long-gauge optical fiber sensor for bending deformation measurement |
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5633494A (en) * | 1991-07-31 | 1997-05-27 | Danisch; Lee | Fiber optic bending and positioning sensor with selected curved light emission surfaces |
| CN201780103U (en) * | 2010-07-07 | 2011-03-30 | 李素贞 | Long-gauge optical fiber sensor for bending deformation measurement |
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