CN209485380U - Optical fibre displacement sensor with mechanical lever amplification - Google Patents
Optical fibre displacement sensor with mechanical lever amplification Download PDFInfo
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- CN209485380U CN209485380U CN201920087654.0U CN201920087654U CN209485380U CN 209485380 U CN209485380 U CN 209485380U CN 201920087654 U CN201920087654 U CN 201920087654U CN 209485380 U CN209485380 U CN 209485380U
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- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims description 15
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Abstract
The utility model provides a kind of optical fibre displacement sensor with mechanical lever amplification, belong to technical field of optical fiber sensing, bottom case, face-piece, long stent and short bracket constitute fixed holder part, drive rod, first arc lever, second arc lever, first horizontal support, central, transverse axis and the second horizontal support constitute movable support part, pull rod and rocking bar constitute auxiliary stand part, entering light section, first entering light bending section, second entering light bending section, third entering light bending section, light echo section, third goes out bendingof light section, second goes out bendingof light section, first goes out bendingof light section and light section is respectively the different sections on a jointed fiber out, first entering light bending section, second entering light bending section, third entering light bending section, third goes out bendingof light section, second, which goes out bendingof light section and first, goes out bendingof light section composition sensing fiber section, this transducer sensitivity compared with Height, sensor fiber part by environment temperature, humidity, cleannes and electromagnetic interference, are not influenced by moisture and dust.
Description
Technical field
The present invention relates to a kind of optical fibre displacement sensor more particularly to a kind of intensity modulation types with mechanical lever amplification
Optical fibre displacement sensor belongs to technical field of optical fiber sensing.
Background technique
Optical fibre displacement sensor is not interfered due to its long transmission distance by electromagnetic environment, has been widely used, and shape is modulated
Formula mainly has intensity modulation type, grating type optical fiber and optical fiber interference type, has in terms of optical fibre displacement sensor at present more special
Sharp technology, these fibre optical sensors have their own characteristics, and some sensitivity is higher, and some composed structures are complicated, some technology contents
Too high, though they can adapt to the conversion of displacement signal very well, the manufacturing cost of most of sensor is higher, and some then uses item
Part is more harsh, for example, its fiber end face of the sensor having or grating gap by moisture, dust and it is mouldy etc. corrode when, sensing
The sensitivity of device and accuracy, which will receive, to be seriously affected.
Summary of the invention
The purpose of the present invention is to provide a kind of sensitivity is higher, and can be used steadily in the long term under complicated environmental condition
Intensity modulation type optical fibre displacement sensor with mechanical lever amplification.
The technical problem to be solved by the present invention is to what is be achieved through the following technical solutions: the sensor by bottom case (1),
Spring (2), pull ring (3), face-piece (4), the first entering light bending section (5), first go out bendingof light section (6), solid fine set (7), pull rod
(8), long stent (9), solid fine seat (10), drive rod (11), sleeve (12), sensing chip (13), entering light section (14), out light section
(15), entering light connect fine head (16), go out light connect fine head (17), entering light coupler (18), go out photo-coupler (19), short bracket (20),
Rocking bar (21), light echo section (22), light echo section steel wire ring (23), the first horizontal support (24), the first arc lever (25), the edge of a knife
(26), recess (27), square hole (28), central, transverse axis (29), core wire ring (30), third entering light bending section (31), third go out
Light is curved out for bendingof light section (32), the second arc lever (33), the second horizontal support (34), the second entering light bending section (35), second
Tune (36) and pedestal (37) composition.
Bottom case (1), face-piece (4), long stent (9) and short bracket (20) constitute fixed holder part, drive rod (11), first
Arc lever (25), the second arc lever (33), the first horizontal support (24), central, transverse axis (29) and the second horizontal support (34)
Movable support part is constituted, pull rod (8) and rocking bar (21) constitute auxiliary stand part, entering light section (14), the first entering light bending section
(5), the second entering light bending section (35), third entering light bending section (31), light echo section (22), third go out bendingof light section (32), second
Bendingof light section (36), first go out bendingof light section (6) and light section (15) is respectively the different sections on a jointed fiber out out, and first
Entering light bending section (5), the second entering light bending section (35), third entering light bending section (31), third go out bendingof light section (32), second go out
Bendingof light section (36) and first goes out bendingof light section (6) composition sensing fiber section.
It is equipped with vertical long stent (9) and short bracket (20) below face-piece (4) and in bottom case (1), long stent (9) and short
Bracket (20) top is connect with face-piece (4) bottom surface, is equipped with rocking bar (21) below short bracket (20), by the at the top of rocking bar (21)
Three pin shafts (42) are connect with short bracket (20) bottom, and long stent (9) and rocking bar (21) bottom are equipped with square hole (28), square hole (28)
Interior to be equipped with the edge of a knife (26), face-piece (4) center is equipped with sleeve (12), is installed with drive rod (11) in sleeve (12), drive rod (11) top
Portion is equipped with sensing chip (13), and sensing chip (13) bottom center connect with drive rod (11) top, during drive rod (11) bottom is equipped with
Heart horizontal axis (29), central, transverse axis (29) is vertical with drive rod (11), and central, transverse axis (29) both ends are equipped with core wire ring (30).
The first arc lever (25) is equipped with above the edge of a knife (26) of rocking bar (21) bottom, the first arc lever (25) is far from
One end of heart horizontal axis (29) is equipped with the first horizontal support (24), and the first horizontal support (24) is vertical with first arc lever (25),
First horizontal support (24) both ends are equipped with light echo section steel wire ring (23), and the is equipped with above the edge of a knife (26) of long stent (9) bottom
Two arc levers (33), the second arc lever (33) are equipped with the second horizontal support (34) far from the one end of central, transverse axis (29), the
Two horizontal supports (34) are vertical with second arc lever (33), and the second horizontal support (34) both ends are equipped with solid fibre and cover (7), and first
One end of arc lever (25) and the second arc lever (33) close central, transverse axis (29) passes through the 4th pin shaft (43) and center
Horizontal axis (29) connection, the first arc lever (25) and the second arc lever (33) are equipped with recessed above and above the edge of a knife (26)
Mouth (27), and recess (27) is relatively close from central, transverse axis (29), the first arc lever (25) and the second arc lever (33) are with the edge of a knife
(26) it is fulcrum, makes the first arc lever (25) and the second arc lever (33) that there is lever amplification effect.
It is set below face-piece (4) there are two solid fine seat (10), bottom case (1) side is equipped with entering light coupler (18) and out optical coupling
Device (19), bottom case (1) bottom side are equipped with pedestal (37), and lateral pull rod (8), pull rod (8) one are equipped in the middle part of drive rod (11)
End passes through the first pin shaft (40) and long stent (9) in the middle part of pull rod (8) by connecting in the middle part of the second pin shaft (41) and drive rod (11)
Middle part connection, pull rod (8) other end are equipped with pull ring (3), are equipped with spring (2) between pull ring (3) and pedestal (37), spring (2) top
End is connect with pull ring (3), and spring (2) bottom end is connect with pedestal (37), long stent (9), drive rod (11), pull rod (8) and second
The enclosing part of arc lever (33) constitutes a mobilizable quadrilateral structure.
It is equipped with a jointed fiber in bottom case (1), passes through solid fine seat (10), solid fine set (7), core wire ring
(30) and light echo section steel wire ring (23), optical path direction of advance are divided into entering light section (14), the first entering light bending section (5), second
Entering light bending section (35), third entering light bending section (31), light echo section (22), third go out the bendingof light out of bendingof light section (32), second
Section (36), first go out bendingof light section (6) and out light section (15).
After when the external world, displacement acts on sensing chip (13), sensing chip (13) passes through the transmission of drive rod (11), the second pin shaft
(41), the 4th pin shaft (43), central, transverse axis (29) and core wire ring (30) move down, and pull rod (8) is with the first pin shaft (40)
Upwarp pull ring (3) for fulcrum, spring (2) elongates, and the first arc lever (25) and the second arc lever (33) are respectively with respective
The edge of a knife (26) be that fulcrum respectively upwarps light echo section steel wire ring (23) and solid fine cover (7), third entering light bending section (31) and the
Three go out bendingof light section (32) is drawn point under the action of core wire ring (30), i.e. radius of curvature reduces, third entering light bending section
(31) and third go out bendingof light section (32) fibre loss increase, at the same time, the first entering light bending section (5) and first out light it is curved
Tune (6) is by solid fine set (7) flattening, and solid fine set (7) makes the second entering light bending section (35) and second go out bendingof light section (36) change
Bendingof light section (6), the second entering light bending section (35) and second go out bendingof light section out for point, i.e. the first entering light bending section (5), first
(36) fibre loss increases, in addition the lever amplification acts on, i.e. the first arc lever (25) and the second arc lever
(33) become the first arc lever (25) and the second arc lever (33) is separate close to the smaller of central, transverse axis (29) one end
The larger tilting of central, transverse axis (29) one end, further decreases each section of the sensing fiber section of radius of curvature, optical fiber damage
Consumption further increases, i.e., the sensitivity of the described sensor is enhanced.
Due to the adoption of the above technical scheme, advantage for present invention and good effect are: this fibre optical sensor has
Mechanical lever amplification, sensitivity is higher, and fiber section is not by environment temperature, humidity, cleannes and electromagnetic interference influence, Bu Huiyin
Moisture, dust, mouldy etc. corrode and influence the performance of sensor, sensor energy long-term stable work.
Detailed description of the invention
Present invention will be further explained below with reference to the attached drawings and examples, and the present invention has following 7 width attached drawing:
Fig. 1 is the front sectional view of this sensor,
State diagram when Fig. 2 is this working sensor,
Fig. 3 is the partial enlarged view before and after this working sensor,
Fig. 4 is the schematic diagram of this sensor activity holder part,
Fig. 5 is the perspective view of different sections on jointed fiber,
Fig. 6 is the schematic diagram of optical path direction of advance,
Fig. 7 is the overhead sectional view of this sensor.
Each number marked in the accompanying drawings respectively indicates as follows:
1. bottom case, 2. springs, 3. pull rings, 4. face-pieces, 5. first entering light bending sections, 6. first go out bendingof light section, 7. solid fibres
Set, 8. pull rods, 9. long stents, 10. solid fine seats, 11. drive rods, 12. sleeves, 13. sensing chips, 14. entering light sections, 15. go out light section,
16. entering light connects fine head, 17., which go out light, connects fine head, 18. entering light couplers, and 19. go out photo-coupler, 20. short brackets, 21. rocking bars, 22.
Light echo section, 23. light echo section steel wire rings, 24. first horizontal supports, 25. first arc levers, 26. edges of a knife, 27. recesses, 28. sides
Hole, 29. central, transverse axis, 30. core wire rings, 31. third entering light bending sections, 32. thirds go out bendingof light section, 33. second arcs
Lever, 34. second horizontal supports, 35. second entering light bending sections, 36. second go out bendingof light section, and 37. pedestals, 38. pick up the ears, and 39.
Screw hole, 40. first pin shafts, 41. second pin shafts, 42. third pin shafts, 43. the 4th pin shafts, 44. shaking directions, before 45. optical paths
Into direction.
Specific embodiment
1. the sensor is curved by bottom case (1), spring (2), pull ring (3), face-piece (4), the first entering light according to Fig. 1 to Fig. 7
Tune (5), first go out bendingof light section (6), solid fine set (7), pull rod (8), long stent (9), solid fine seat (10), drive rod (11),
Sleeve (12), entering light section (14), goes out light section (15), entering light and connects fine head (16), goes out light and connect fine head (17), entering light sensing chip (13)
Coupler (18) goes out photo-coupler (19), short bracket (20), rocking bar (21), light echo section (22), light echo section steel wire ring (23), the
One horizontal support (24), the first arc lever (25), the edge of a knife (26), recess (27), square hole (28), central, transverse axis (29), center
Steel wire ring (30), third entering light bending section (31), third go out the laterally branch of bendingof light section (32), the second arc lever (33), second
Frame (34), the second entering light bending section (35), second go out bendingof light section (36) and pedestal (37) composition.
2. bottom case (1), face-piece (4), long stent (9) and short bracket (20) constitute fixed holder part, drive rod (11), the
One arc lever (25), the second arc lever (33), the first horizontal support (24), central, transverse axis (29) and the second horizontal support
(34) movable support part is constituted, pull rod (8) and rocking bar (21) constitute auxiliary stand part, and entering light section (14), the first entering light are curved
Tune (5), the second entering light bending section (35), third entering light bending section (31), light echo section (22), third go out bendingof light section (32),
Second goes out bendingof light section (36), first goes out bendingof light section (6) and light section (15) is respectively the different sections on a jointed fiber out,
First entering light bending section (5), the second entering light bending section (35), third entering light bending section (31), third go out bendingof light section (32),
Two, which go out bendingof light section (36) and first, goes out bendingof light section (6) composition sensing fiber section.
3. be equipped with vertical long stent (9) and short bracket (20) below face-piece (4) and in bottom case (1), long stent (9) and
Short bracket (20) top is connect with face-piece (4) bottom surface, is equipped with rocking bar (21) below short bracket (20), is passed through at the top of rocking bar (21)
Third pin shaft (42) is connect with short bracket (20) bottom, and long stent (9) and rocking bar (21) bottom are equipped with square hole (28), square hole
(28) edge of a knife (26) are equipped in, face-piece (4) center is equipped with sleeve (12), is installed with drive rod (11), drive rod in sleeve (12)
(11) top is equipped with sensing chip (13), and sensing chip (13) bottom center connect with drive rod (11) top, drive rod (11) bottom
Equipped with central, transverse axis (29), central, transverse axis (29) is vertical with drive rod (11), and central, transverse axis (29) both ends are equipped with core wire
Ring (30).
4. being equipped with the first arc lever (25) above the edge of a knife (26) of rocking bar (21) bottom, the first arc lever (25) is separate
One end of central, transverse axis (29) is equipped with the first horizontal support (24), and the first horizontal support (24) and the first arc lever (25) hang down
Directly, the first horizontal support (24) both ends are equipped with light echo section steel wire ring (23), are equipped with above the edge of a knife (26) of long stent (9) bottom
Second arc lever (33), the second arc lever (33) are equipped with the second horizontal support (34) far from the one end of central, transverse axis (29),
Second horizontal support (34) is vertical with second arc lever (33), and the second horizontal support (34) both ends are equipped with solid fine set (7), the
One end of one arc lever (25) and the second arc lever (33) close central, transverse axis (29) passes through the 4th pin shaft (43) in
Heart horizontal axis (29) connection, the first arc lever (25) and the second arc lever (33) are equipped with above and above the edge of a knife (26)
Recess (27), and recess (27) is relatively close from central, transverse axis (29), the first arc lever (25) and the second arc lever (33) are with knife
Mouth (26) is fulcrum, and the first arc lever (25) and the second arc lever (33) is made to have lever amplification effect.
5. being set below face-piece (4) there are two solid fine seat (10), bottom case (1) side is equipped with entering light coupler (18) and out optocoupler
Clutch (19), bottom case (1) bottom side are equipped with pedestal (37), and lateral pull rod (8), pull rod (8) are equipped in the middle part of drive rod (11)
One end passes through the first pin shaft (40) and long stent by connecting in the middle part of the second pin shaft (41) and drive rod (11) in the middle part of pull rod (8)
(9) middle part connection, pull rod (8) other end are equipped with pull ring (3), are equipped with spring (2) between pull ring (3) and pedestal (37), spring (2)
Top is connect with pull ring (3), and spring (2) bottom end is connect with pedestal (37), long stent (9), drive rod (11), pull rod (8) and
The enclosing part of two arc levers (33) constitutes a mobilizable quadrilateral structure.
6. being equipped with a jointed fiber in bottom case (1), solid fine seat (10), solid fine set (7), core wire are passed through
Ring (30) and light echo section steel wire ring (23), jointed fiber both ends are respectively equipped with that entering light connects fine head (16) and light connects fine head (17) out,
And entering light connects fine head (16) and is inserted in entering light coupler (18) one end, light connects fine head (17) and is inserted in out photo-coupler (19) one end out,
Gu the fiber segment that fine seat (10) and entering light connect fine head (16) and connect between fine head (17) with light out is respectively entering light section (14) and goes out
Light section (15), Gu fine seat (10) to the fiber segment between solid fine set (7) and close to solid fine seat (10) side is respectively the first entering light
Bending section (5) and first goes out bendingof light section (6), Gu fine seat (10) is between solid fibre set (7) and close to the solid fine light for covering (7) side
Fine section is respectively that the second entering light bending section (35) and second go out bendingof light section (36), and solid fine cover (7) are to light echo section steel wire ring (23)
Between fiber segment be respectively that third entering light bending section (31) and third go out bendingof light section (32), two light echo section steel wire rings (23)
Between fiber segment be light echo section (22).
7. optical path direction of advance is divided into entering light section (14), the first entering light bending section (5), the second entering light bending section
(35), third entering light bending section (31), light echo section (22), third go out bendingof light section (32), second bendingof light section (36), first out
Bendingof light section (6) and out light section (15) out, in optical path, entering light section (14), to go out light section (15) and the shape of light echo section (22) be to consolidate
Fixed, the light decay consumption of generation is definite value, is not had an impact to the variable quantity of sensing, the sensor is former according to fiber microbending loss
Reason, microbending loss produce intensity modulation to the optical signal in optical fiber, and optical fiber total losses are equal to the first entering light bending section (5), the
Two entering light bending sections (35), third entering light bending section (31), third go out bendingof light section (32), second go out bendingof light section (36) and the
One goes out (6) six micro-bend section of bendingof light section of the sum of microbending loss, the optical signal size exported from light section (15) out and extraneous position
It is proportional to move size.
8. displacement acts on sensing chip (13) when the external world, sensing chip (13) passes through the transmission of drive rod (11), the second pin
Axis (41), the 4th pin shaft (43), central, transverse axis (29) and core wire ring (30) move down, and pull rod (8) is with the first pin shaft
(40) upwarp pull ring (3) for fulcrum, spring (2) elongates, the first arc lever (25) and the second arc lever (33) respectively with
The respective edge of a knife (26) is that fulcrum respectively upwarps light echo section steel wire ring (23) and solid fine set (7), third entering light bending section (31)
Go out bendingof light section (32) under the action of core wire ring (30) by drawing point, i.e. optical fiber bending at core wire ring (30) with third
The fibre loss that the reduction of rate radius, third entering light bending section (31) and third go out bendingof light section (32) increases, at the same time, first
Entering light bending section (5) and first goes out bendingof light section (6) by solid fine set (7) flattening, and solid fine set (7) makes the second entering light bending section
(35) go out bendingof light section (36) with second and come to a point, i.e., the second entering light bending section (35) and second close to solid fine set (7) side goes out
Bendingof light section (36) is formed, and the first entering light bending section (5), first go out bendingof light section (6), the second entering light bending section (35) and the
Two fibre losses for going out bendingof light section (36) increase, in addition the lever amplification acts on, i.e. the first arc lever (25) and
Second arc lever (33) becomes the first arc lever (25) and the second arc close to the smaller of central, transverse axis (29) one end
Larger tilting of the lever (33) far from central, transverse axis (29) one end, keeps each section of the sensing fiber section of radius of curvature further
Reduce, fibre loss further increases, i.e., the sensitivity of the described sensor is enhanced.
9. be displaced it is smaller, the first entering light bending section (5), first go out bendingof light section (6), third entering light bending section (31) and
The radius of curvature that third goes out bendingof light section (32) is larger, the second entering light bending section (35) and second go out bendingof light section (36) bending
Unobvious, the optical fiber total losses of the Fibre Optical Sensor section are smaller.
10. be displaced it is bigger, the first entering light bending section (5), first go out bendingof light section (6), third entering light bending section (31) and
The radius of curvature that third goes out bendingof light section (32) is smaller, the second entering light bending section (35) and second go out bendingof light section (36) bending
It being more obvious, the optical fiber total losses of the Fibre Optical Sensor section are bigger, after external world's displacement revocation, the movable support part and the biography
Sense fiber section restores to the original state under the action of spring (2).
11. a sensor needs separately to configure laser, laser regulated power supply, condenser lens, light-sensitive device, at signal
Circuit and data display equipment are managed, signal processing circuit includes at least the functions such as preposition amplification, DC balance and linear compensation, laser
The light source that device issues is connect by external optical patchcord and its fibre-optical splice with entering light coupler (18), and light source is through this sensor
Sensing after become optical signal and by going out photo-coupler (19) output, out photo-coupler (19) by external optical patchcord and its
Fibre-optical splice is connect with the condenser lens before light-sensitive device, and optical signal is by the focusing of condenser lens and the photoelectricity of light-sensitive device
It is handled after conversion by signal processing circuit, treated, and signal is shown by data display equipment.
12. since the optical fiber in this sensor is that optical fiber seam or optical fiber end is not present in a jointed fiber i.e. its middle part
Face, so, the sensing fiber section is not influenced by clean environment degree, i.e. moisture in air and dust will not interfere sensor
Work, since the optical fiber total losses of sensor are equal to the first entering light bending section (5), the second entering light bending section (35), third entering light
Bending section (31), third go out bendingof light section (32), second and go out (6) six micro-bend section of bendingof light section out bendingof light section (36) and first
The sum of microbending loss, in addition the mechanical lever amplification of the first arc lever (25) and the second arc lever (33), so
The sensitivity of this sensor is higher, optical fiber used in sensor be 100 μm/125 μm multimode plastic optical fibers, solid fibre seat (10) and consolidate
The material of fibre set (7) is soft rubber, and entering light connects fine head (16) and light connects the type of fine head (17) as ST type out.
13. pick up the ears (38) and screw hole (39) are used for the installation of sensor, bottom case (1), face-piece (4), sensing chip (13), the
One arc lever (25), the second arc lever (33), fixed holder part and the material of movable support part are aluminium alloy, long
Bracket (9), short bracket (20), drive rod (11) and rocking bar (21) cross section be rectangle, when drive rod (11) is to moving down
When dynamic, rocking bar (21) bottom can slightly be biased to drive rod (11) side under the involving of the first arc lever (25).
Claims (1)
1. it is a kind of with mechanical lever amplification optical fibre displacement sensor, by bottom case (1), spring (2), pull ring (3), face-piece (4),
First entering light bending section (5), first go out bendingof light section (6), solid fine set (7), pull rod (8), long stent (9), solid fine seat (10), pass
Lever (11), sensing chip (13), entering light section (14), goes out light section (15), entering light and connects fine head (16), goes out light and connect fine head sleeve (12)
(17), entering light coupler (18), out photo-coupler (19), short bracket (20), rocking bar (21), light echo section (22), light echo section steel wire
Ring (23), the first horizontal support (24), the first arc lever (25), the edge of a knife (26), recess (27), square hole (28), central, transverse axis
(29), core wire ring (30), third entering light bending section (31), third go out bendingof light section (32), the second arc lever (33),
Two horizontal supports (34), the second entering light bending section (35), second go out bendingof light section (36) and pedestal (37) composition；
Bottom case (1), face-piece (4), long stent (9) and short bracket (20) constitute fixed holder part, drive rod (11), the first arc
Lever (25), the second arc lever (33), the first horizontal support (24), central, transverse axis (29) and the second horizontal support (34) are constituted
Movable support part, pull rod (8) and rocking bar (21) constitute auxiliary stand part, entering light section (14), the first entering light bending section (5),
Second entering light bending section (35), third entering light bending section (31), light echo section (22), third go out the light out of bendingof light section (32), second
Bending section (36), first go out bendingof light section (6) and light section (15) is respectively the different sections on a jointed fiber, the first entering light out
Bending section (5), the second entering light bending section (35), third entering light bending section (31), third go out bendingof light section (32), second, and light is curved out
Tune (36) and first goes out bendingof light section (6) composition sensing fiber section；
It is characterized by: being equipped with vertical long stent (9) and short bracket (20), long stent below face-piece (4) and in bottom case (1)
(9) it is connect with face-piece (4) bottom surface with short bracket (20) top, is equipped with rocking bar (21) below short bracket (20), rocking bar (21) top
Portion is connect by third pin shaft (42) with short bracket (20) bottom, and long stent (9) and rocking bar (21) bottom are equipped with square hole (28),
The edge of a knife (26) are equipped in square hole (28), face-piece (4) center is equipped with sleeve (12), is installed with drive rod (11) in sleeve (12), is driven
Sensing chip (13) are equipped at the top of bar (11), sensing chip (13) bottom center connect with drive rod (11) top, drive rod (11) bottom
Portion is equipped with central, transverse axis (29), and central, transverse axis (29) is vertical with drive rod (11), and central, transverse axis (29) both ends are equipped with central steel
Silk ring (30)；
The first arc lever (25) is equipped with above the edge of a knife (26) of rocking bar (21) bottom, the first arc lever (25) is horizontal far from center
One end of axis (29) is equipped with the first horizontal support (24), and the first horizontal support (24) is vertical with first arc lever (25), and first
Horizontal support (24) both ends are equipped with light echo section steel wire ring (23), are equipped with the second arc above the edge of a knife (26) of long stent (9) bottom
Shape lever (33), the second arc lever (33) are equipped with the second horizontal support (34) far from the one end of central, transverse axis (29), and second is horizontal
Vertical with second arc lever (33) to bracket (34), the second horizontal support (34) both ends are equipped with solid fine set (7), the first arc
One end of lever (25) and the second arc lever (33) close central, transverse axis (29) passes through the 4th pin shaft (43) and central, transverse axis
(29) it connects, the first arc lever (25) and the second arc lever (33) are equipped with recess above and above the edge of a knife (26)
(27), and recess (27) is relatively close from central, transverse axis (29), and the first arc lever (25) and the second arc lever (33) are with the edge of a knife
It (26) is fulcrum, the first arc lever (25) and the second arc lever (33) constitute lever；
It is set below face-piece (4) there are two solid fine seat (10), bottom case (1) side is equipped with entering light coupler (18) and out photo-coupler
(19), bottom case (1) bottom side is equipped with pedestal (37), and lateral pull rod (8), pull rod (8) one end are equipped in the middle part of drive rod (11)
By being connect in the middle part of the second pin shaft (41) and drive rod (11), by the first pin shaft (40) and long stent (9) in the middle part of pull rod (8)
Portion's connection, pull rod (8) other end are equipped with pull ring (3), are equipped with spring (2) between pull ring (3) and pedestal (37), spring (2) top
It is connect with pull ring (3), spring (2) bottom end is connect with pedestal (37), long stent (9), drive rod (11), pull rod (8) and the second arc
The enclosing part of shape lever (33) constitutes a mobilizable quadrilateral structure；
It is equipped with a jointed fiber in bottom case (1), passes through solid fine seat (10), solid fine set (7), core wire ring (30)
With light echo section steel wire ring (23), optical path direction of advance is divided into entering light section (14), the first entering light bending section (5), the second entering light
Bending section (35), third entering light bending section (31), light echo section (22), third go out the bendingof light section out of bendingof light section (32), second
(36), first goes out bendingof light section (6) and out light section (15)；
Sensing chip (13) passes through second pin shaft of transmission (41) of drive rod (11), the after extraneous displacement acts on sensing chip (13)
Four pin shafts (43), central, transverse axis (29) and core wire ring (30) move down, and pull rod (8) is made with the first pin shaft (40) for fulcrum
Pull ring (3) upwarps, and spring (2) elongates, and the first arc lever (25) and the second arc lever (33) are respectively with the respective edge of a knife
(26) respectively upwarp light echo section steel wire ring (23) and solid fine set (7) for fulcrum, third entering light bending section (31) and third go out light
Bending section (32) is drawn point under the action of core wire ring (30), i.e. radius of curvature reduces, the first entering light bending section (5) and the
One goes out bendingof light section (6) is flattened by solid fine set (7), and solid fine set (7) makes the second entering light bending section (35) and second go out bendingof light
Section (36) comes to a point, and the variation of the first arc lever (25) and the second arc lever (33) close to central, transverse axis (29) one end is smaller,
The tilting of first arc lever (25) and the second arc lever (33) far from central, transverse axis (29) one end is larger.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920087654.0U CN209485380U (en) | 2019-01-20 | 2019-01-20 | Optical fibre displacement sensor with mechanical lever amplification |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920087654.0U CN209485380U (en) | 2019-01-20 | 2019-01-20 | Optical fibre displacement sensor with mechanical lever amplification |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109655086A (en) * | 2019-01-20 | 2019-04-19 | 盐城师范学院 | Optical fibre displacement sensor with mechanical lever amplification |
| CN111664811A (en) * | 2020-06-07 | 2020-09-15 | 盐城师范学院 | Optical fiber angle sensor |
-
2019
- 2019-01-20 CN CN201920087654.0U patent/CN209485380U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109655086A (en) * | 2019-01-20 | 2019-04-19 | 盐城师范学院 | Optical fibre displacement sensor with mechanical lever amplification |
| CN109655086B (en) * | 2019-01-20 | 2024-05-10 | 盐城师范学院 | Optical fiber displacement sensor with mechanical lever amplification |
| CN111664811A (en) * | 2020-06-07 | 2020-09-15 | 盐城师范学院 | Optical fiber angle sensor |
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