CN210570636U - Sensitization type fiber grating inclinometer - Google Patents
Sensitization type fiber grating inclinometer Download PDFInfo
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- CN210570636U CN210570636U CN201922055153.7U CN201922055153U CN210570636U CN 210570636 U CN210570636 U CN 210570636U CN 201922055153 U CN201922055153 U CN 201922055153U CN 210570636 U CN210570636 U CN 210570636U
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Abstract
The utility model provides a sensitization type fiber grating inclinometer, belonging to the sensing technical field, comprising a shell, a stretching beam, a sensitization component and a counterweight, wherein the stretching beam, the sensitization component and the counterweight are all arranged in the shell and are sequentially arranged from top to bottom; the sensitization component comprises a first torque rod rotationally connected with the shell through a first rotating shaft, a second torque rod rotationally connected with the shell through a second rotating shaft, and a torque transmission mechanism connected with the first rotating shaft and the second rotating shaft; the first moment rod is connected with the balance weight through the first rigid rope, the second moment rod is connected with the free end of the stretching beam through the second rigid rope, and the moment arm of the acting force acting on the first moment rod through the first rigid rope is larger than the moment arm of the acting force acting on the second moment rod through the second rigid rope. The utility model provides a sensitization type fiber grating inclinometer, measurement accuracy is high, stable in structure, area is little, long service life, is applicable to the deformation monitoring of engineering structure.
Description
Technical Field
The utility model belongs to the technical field of the sensing, more specifically say, relate to a sensitization type fiber grating inclinometer.
Background
The monitoring of the inclination and deformation information at different heights or depths along the vertical direction is very important in the engineering fields of high-rise buildings, deep pits, high slopes and the like, and the inclination, deformation conditions and the change trend of the inclination and deformation information can be mastered through monitoring. In the measurement technology of the inclination or deformation, the traditional electric inclinometer and mechanical inclinometer are very commonly applied. The output signal measured by the electrical inclinometer is weak current, the interference resistance is poor, the reading is unstable, every measurement of workers must be carried out on the side slope site, the work is inconvenient to carry out, reading results of different workers affected subjectively are easy to be different, real-time monitoring cannot be achieved, and then the conditions such as side slope deformation cannot be mastered in real time. Therefore, the distributed deformation measurement technology based on the fiber grating principle can more accurately measure the change of the inclination angle.
However, in the process of implementing the present invention, the inventor finds that there are at least the following problems in the prior art: the existing fiber grating inclinometer is difficult to be applied to deformation monitoring of an engineering structure due to the defects of low precision, short service life, large volume and the like.
SUMMERY OF THE UTILITY MODEL
An object of the embodiment of the utility model is to provide a sensitization type fiber grating inclinometer aims at solving current fiber grating inclinometer precision low, the short-lived, bulky technical problem of life-span.
In one aspect, a sensitivity enhanced fiber grating inclinometer is provided, which comprises: the device comprises a shell, a stretching beam, a sensitization component and a balance weight, wherein the stretching beam, the sensitization component and the balance weight are all arranged in the shell and are sequentially arranged from top to bottom;
one end of the stretching beam is connected with the inner wall of the shell, the other end of the stretching beam is a free end, and a fiber grating for monitoring the elongation of the stretching beam is attached to the stretching beam;
the sensitization component comprises a first torque rod which is rotationally connected with the shell through a first rotating shaft, a second torque rod which is rotationally connected with the shell through a second rotating shaft, and a torque transmission mechanism which is connected with the first rotating shaft and the second rotating shaft; the first torque rod is connected with the counterweight through a first rigid rope, and the second torque rod is connected with the free end of the stretching beam through a second rigid rope; the acting force of the second moment rod on the tension beam is larger than the acting force of the counterweight on the first moment rod;
the torque transmission mechanism comprises a first gear arranged on the first rotating shaft and a second gear arranged on the second rotating shaft, and the second gear is meshed with the first gear.
As another embodiment of the present application, the sensitization-type fiber grating inclinometer further includes a limiting member, which is located between the first moment rod and the counterweight and is used for limiting the acting force acting on the first moment rod to be perpendicular to the first moment rod.
As another embodiment of the present application, the limiting member includes two fixed pulleys disposed at an interval, and the two fixed pulleys are respectively rotatably connected to the housing; a channel for the first rigid rope to pass through is formed between the two fixed pulleys, and the two fixed pulleys are respectively connected with the first rigid rope.
As another embodiment of this application, the casing includes the barrel that the opening is down, be provided with on the roof of barrel and be used for supplying the through-hole that fiber grating's lead-out wire was worn out.
As another embodiment of the present application, the sensitization type fiber grating inclinometer further comprises a support frame arranged in the shell, and the first rotating shaft and the second rotating shaft are respectively and rotatably arranged on the support frame.
As another embodiment of the present application, the support frame includes a first support beam and a second support beam that are parallel to each other, two ends of the first support beam and the second support beam are connected to an inner wall of the housing, respectively, the first rotating shaft is rotatably disposed on the first support beam, and the second rotating shaft is rotatably disposed on the second rotating beam.
As another embodiment of this application, the support frame still includes the tie-beam of connecting first supporting beam with the second supporting beam, the tie-beam slope sets up.
As another embodiment of this application, the middle part of first pivot with first supporting beam rotates to be connected, the middle part of second pivot with second supporting beam rotates to be connected, first gear with first moment pole branch is located the both ends of first pivot, the second gear with second moment pole branch is located the both ends of second pivot.
As another embodiment of this application, first moment pole with second moment pole one end is connected with corresponding pivot respectively, and the other end is the free end, just the length of first moment pole is greater than the length of second moment pole, first rigidity rope sets up on the free end of first moment pole.
As another embodiment of this application, first moment pole with second moment pole branch is equipped with two, two first moment pole is in on the same straight line and divides and locates the both sides of first pivot, two second moment pole is in on the same straight line and divides and locates the both sides of second pivot, first rigidity rope with one of them the free end of first moment pole is connected, second rigidity rope with one of them the second moment pole is connected.
One of the above technical solutions has the following beneficial effects: compared with the prior art, the sensitivity enhancing component capable of amplifying the moment is additionally arranged between the stretching beam and the balance weight, even if the small inclination can be detected, the measurement precision of the inclinometer is effectively improved. In addition, the torque transmission mechanism adopts a form that the first gear is meshed with the second gear, so that the structure is stable, the occupied area is small, the stable transmission of the torque between the first torque rod and the second torque rod is ensured, and meanwhile, the longer service life and the smaller occupied space of the inclinometer are ensured.
And because the fiber grating sensor has the advantages of wide measurement range, high sensitivity, strong severe weather resistance and the like, the sensitivity enhanced fiber grating inclinometer provided by the embodiment has the advantages of high measurement precision, wide measurement range, stable structure, small occupied area and long service life, and can be widely applied to various complex environments.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
Fig. 1 is a schematic view of an internal structure of a sensitivity enhanced fiber grating inclinometer provided by the embodiment of the present invention;
fig. 2 is a schematic view of the top view structure of the sensitivity enhanced fiber grating inclinometer provided by the embodiment of the utility model.
In the figure: 100. a housing; 110. a barrel; 120. a through hole; 200. stretching the beam; 300. a sensitization component; 310. a first rotating shaft; 320. a first torque rod; 330. a second rotating shaft; 340. a second torque rod; 350. a first gear; 360. a second gear; 400. balancing weight; 500. a first rigid cord; 600. a second rigid cord; 700. a fixed pulley; 800. a support frame; 810. a first support beam; 820. a second support beam; 830. and connecting the beams.
Detailed Description
In order to make the technical problem, technical solution and advantageous effects to be solved by the present invention more clearly understood, the following description is given in conjunction with the accompanying drawings and embodiments to illustrate the present invention in further detail. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 1, a sensitivity enhanced fiber grating inclinometer according to an embodiment of the present invention will now be described. The sensitization type fiber grating inclinometer comprises a shell 100, and a tensile beam 200, a sensitization component 300 and a counterweight 400 which are all arranged in the shell 100 and are sequentially arranged from top to bottom.
One end of the stretching beam 200 is connected to the inner wall of the housing 100, and the other end is a free end, and a fiber grating for monitoring the elongation of the stretching beam 200 is attached to the stretching beam 200.
The sensitivity enhancing assembly 300 comprises a first torque rod 320 rotationally connected with the housing 100 through a first rotating shaft 310, a second torque rod 340 rotationally connected with the housing 100 through a second rotating shaft 330, and a torque transmission mechanism connecting the first rotating shaft 310 and the second rotating shaft 330. The first torque rod 320 is connected to the counterweight 400 through a first rigid string 500, and the second torque rod 340 is connected to the free end of the tension beam 200 through a second rigid string 600. The force of the second moment rod 340 acting on the tensile beam 200 is greater than the force of the weight 400 acting on the first moment rod 320.
The torque transmission mechanism includes a first gear 350 provided on the first rotating shaft 310, and a second gear 360 provided on the second rotating shaft 330, the second gear 360 and the first gear 350 being engaged with each other.
It should be noted that, during the use process, the second gear 360 and the first gear 350 are kept still and only used for transmitting the torque.
when the sensitivity enhanced fiber grating inclinometer is inclined, the acting force acting on the first torque rod 320 is changed, so that the pulling force acting on the stretching beam 200 by the second rigid rope 600 is changed, and the strain quantity of the stretching beam 200 and the fiber grating on the stretching beam is changed, at the moment, the pulling force acting on the stretching beam 200 is delta F ═ kG (1-cos α), wherein delta F is the pulling force acting on the stretching beam 200, the strain quantity change value of the fiber grating can be calculated according to the strain quantity change value of the fiber grating, k is the sensitivity enhanced proportion, is the ratio of the moment arm on the first torque rod 320 to the moment arm on the second torque rod 340, G is the gravity of the counterweight 400, and α is the inclination angle.
The embodiment of the utility model provides a sensitization type fiber grating inclinometer compares with prior art, adds between tensile roof beam 200 and counter weight 400 and has established the sensitization subassembly 300 that can enlarge moment, even the slope of minim also can be detected, and then has effectively improved the measurement accuracy of inclinometer. In addition, the torque transmission mechanism adopts a form that the first gear 350 is meshed with the second gear 360, the structure is stable, and the occupied area is small, so that the stable transmission of the torque between the first torque rod 320 and the second torque rod 340 is ensured, and meanwhile, the longer service life and the smaller occupied space of the inclinometer are ensured.
And because the fiber grating sensor has the advantages of wide measurement range, high sensitivity, strong severe weather resistance and the like, the sensitivity enhanced fiber grating inclinometer provided by the embodiment has the advantages of high measurement precision, wide measurement range, stable structure, small occupied area and long service life, and can be widely applied to various complex environments.
In this embodiment, the first rigid rope 500 and the second rigid rope 600 may be steel wire ropes, plastic ropes, or the like, as long as the use requirements are satisfied.
Specifically, the fiber grating is adhered to the stretching beam 200, and the measurement of the variation of the tensile force acting on the stretching beam 200 is realized through equal strain transmission.
Referring to fig. 1, as a specific implementation manner of the sensitivity enhanced fiber grating inclinometer provided by the present invention, the sensitivity enhanced fiber grating inclinometer further includes a limiting member located between the first torque rod 320 and the counterweight 400, for limiting the acting force acting on the first torque rod 320 to be perpendicular to the first torque rod 320. The force acting on the first torque rod 320 as used herein refers to a force acting on the first torque rod 320 by the weight 400 through the first rigid string 500.
The limiting member is arranged to enable the acting force of the first rigid rope 500 acting on the first torque rod 320 to be always vertical to the first torque rod 320, so that when the inclinometer is inclined, the horizontal force applied to the first torque rod 320 by the counterweight 400 through the first rigid rope 500, namely the force parallel to the length direction of the first torque rod 320, is eliminated, and therefore the k (sensitization ratio) is the ratio of the moment arm on the first torque rod 320 to the moment arm on the second torque rod 340, the influence of the horizontal force on the sensitization ratio is not required to be considered, and the accuracy of the measurement result is further improved.
Referring to fig. 1, as a specific embodiment of the sensitivity enhanced fiber grating inclinometer provided by the present invention, the limiting member includes two fixed pulleys 700 disposed at an interval, the two fixed pulleys 700 are respectively rotatably connected to the casing 100, a channel for the first rigid rope 500 to pass through is formed between the two fixed pulleys 700, and the two fixed pulleys 700 are respectively connected to the first rigid rope 500.
It should be noted that the connection is that the first rigid rope 500 just can pass through the channel and is connected with the two fixed pulleys 700 without friction. Therefore, the situation that the force applied to the first moment rod 320 by the first rigid rope 500 is only the component force of the counterweight 400 and is not mixed with the friction force of the fixed pulley 700 on the first rigid rope 500 can be effectively avoided, and the accuracy of the measuring result is further ensured.
When the inclinometer is inclined, the first rigid rope 500 is subjected to compressive strain with one of the fixed pulleys 700, a horizontal pressure is applied to the fixed pulley 700, and the fixed pulley 700 applies a reaction force to the first rigid rope 500, so that only a tension force perpendicular to the first torque rod 320 is left on the first rigid rope 500 between the fixed pulley 700 and the first torque rod 320, and the k (sensitivity enhancement ratio) can be obtained by the ratio of the moment arm on the first torque rod 320 to the moment arm on the second torque rod 340. The fixed pulleys 700 are provided in two numbers so that the inclinometer can be accurately inclined to the left or the right.
Further, the distance between the two fixed pulleys 700 is adjustable, so that an operator can adjust the distance between the two fixed pulleys 700 according to the specific diameters of the first rigid ropes 500 with different diameters, and the distance between the two fixed pulleys is always kept in a state that the first rigid ropes 500 can just pass through.
Referring to fig. 1 and 2, as a specific embodiment of the sensitivity enhanced fiber grating inclinometer provided by the present invention, the housing 100 includes a cylinder 110 with a downward opening, and a through hole 120 for leading out the leading-out wire of the fiber grating is disposed on a top plate of the cylinder 110.
When the optical fiber grating outgoing line is used, the outgoing line of the optical fiber grating penetrates out of the through hole 120 to be connected with an external information processing system.
The through hole 120 is arranged, so that when the inclinometer is used, on-site punching is not needed, the connection between the fiber bragg grating and an external information processing system is realized, and the use convenience of the inclinometer is improved.
The shell 100 adopts the cylinder 110 with the open bottom, so that an operator can observe and adjust the position of the counterweight 400 in the cylinder 110 through the bottom opening of the cylinder 110 before using, and the use convenience of the inclinometer is further improved.
Referring to fig. 1, as a specific implementation manner of the sensitivity enhanced fiber grating inclinometer provided by the present invention, the sensitivity enhanced fiber grating inclinometer further includes a supporting frame 800 disposed in the casing 100, and the first rotating shaft 310 and the second rotating shaft 330 are respectively rotatably disposed on the supporting frame 800.
During assembly, the sensitization module 300 can be installed on the support frame 800, then the support frame 800 is placed in the casing 100, and two ends of the support frame 800 are connected with the inner wall of the casing 100 respectively. This effectively improves the ease of installation of the sensitising assembly 300.
Referring to fig. 1, as a specific embodiment of the sensitivity enhanced fiber grating inclinometer provided by the present invention, the supporting frame 800 includes a first supporting beam 810 and a second supporting beam 820 parallel to each other, two ends of the first supporting beam 810 and the second supporting beam 820 are respectively connected to the inner wall of the casing 100, the first rotating shaft 310 is rotatably disposed on the first supporting beam 810, and the second rotating shaft 330 is rotatably disposed on the second rotating beam.
Referring to fig. 1, as a specific implementation of the sensitivity enhanced fiber grating inclinometer provided by the present invention, the supporting frame 800 further includes a connecting beam 830 connecting the first supporting beam 810 and the second supporting beam 820, and the connecting beam 830 is disposed in an inclined manner.
The mechanical strength of the first supporting beam 810 and the second supporting beam 820 is further improved by the connecting beam 830, the risk of bending deformation of the first supporting beam 810 and the second supporting beam 820 in the use process is reduced, and the stability and the long service life of the inclinometer structure are guaranteed.
The connecting beam 830 is inclined, so that the volume occupied by the support frame 800 and the space occupied by the whole inclinometer are further reduced.
Referring to fig. 1, as a specific embodiment of the sensitivity enhanced fiber grating inclinometer provided by the present invention, the supporting frame 800 further includes a third supporting beam for supporting the limiting member, and the two fixed pulleys 700 are respectively rotatably disposed on the third supporting beam.
Specifically, both ends of the first support beam 810, the second support beam 820 and the third support beam may be respectively connected to the inner wall of the casing 100 by bolts, and may be respectively bonded or welded to the inner wall of the casing 100, and the specific form thereof is not limited herein.
Referring to fig. 1, as a specific implementation manner of the sensitivity enhanced fiber grating inclinometer provided by the present invention, the middle portion of the first rotating shaft 310 is rotatably connected to the first supporting beam 810, the middle portion of the second rotating shaft 330 is rotatably connected to the second supporting beam 820, the first gear 350 and the first torque rod 320 are respectively disposed at two ends of the first rotating shaft 310, and the second gear 360 and the second torque rod 340 are respectively disposed at two ends of the second rotating shaft 330.
The first gear 350 and the first torque rod 320 are respectively arranged at two ends of the first rotating shaft 310, the second gear 360 and the second torque rod 340 are respectively arranged at two ends of the second rotating shaft 330, mutual influence between the torque transfer mechanism and the torque rods is avoided, stress at two ends of the first rotating shaft 310 and the second rotating shaft 330 is stable, inclination is not easy to occur, and then the risk of abrasion or damage of the first supporting beam 810 and the second supporting beam 820 is reduced, and further the longer service life of the inclinometer is ensured.
Referring to fig. 1, as a specific implementation manner of the sensitivity enhanced fiber grating inclinometer provided by the present invention, the first torque rod 320 and the second torque rod 340 are respectively connected to a corresponding rotating shaft at one end, the other end is a free end, the length of the first torque rod 320 is greater than that of the second torque rod 340, and the first rigid rope 500 is disposed at the free end of the first torque rod 320.
The length of first moment pole 320 is greater than the length of second moment pole 340, and first rigidity rope 500 sets up on the free end of first moment pole 320 for second rigidity rope 600 sets up in the arbitrary position of second moment pole 340 (except that with second pivot 330 junction position), all can satisfy and act on the arm of force of the effort of first moment pole 320 through first rigidity rope 500 and be greater than the arm of force that acts on the effort of second moment pole 340 through second rigidity rope 600, and then ensured that the amplification of moment can certainly be guaranteed through sensitization subassembly 300, the phenomenon that moment diminishes can not appear. In addition, the arrangement also enables an operator to assemble the inclinometer without manually measuring the moment arm of the acting force acting on the first torque rod 320 through the first rigid rope 500 and the moment arm of the acting force acting on the second torque rod 340 through the second rigid rope 600, thereby improving the assembly speed.
Please refer to fig. 1, as a specific implementation manner of the sensitivity enhanced fiber grating inclinometer provided by the present invention, the first torque rod 320 and the second torque rod 340 are respectively provided with two, two first torque rods 320 are located on the same straight line and respectively disposed at two sides of the first rotating shaft 310, two second torque rods 340 are located on the same straight line and respectively disposed at two sides of the second rotating shaft 330, the first rigid rope 500 is connected with a free end of one of the first torque rods 320, and the second rigid rope 600 is connected with one of the second torque rods 340.
The first torque rod 320 and the second torque rod 340 are respectively provided with two torque rods, so that after one torque rod is broken or deformed, the other torque rod can be used, the longer service life of the inclinometer is further ensured, and the use convenience of the inclinometer is improved.
Further, the utility model provides an in the sensitization type fiber grating inclinometer first gear 350, second gear 360, two first moment poles 320, two second moment poles 340 be symmetrical structure respectively, and then eliminated the inclinometer because of the influence of self gravity to tensile beam 200.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. The sensitization type fiber grating inclinometer is characterized in that: the device comprises a shell, a stretching beam, a sensitization component and a balance weight, wherein the stretching beam, the sensitization component and the balance weight are all arranged in the shell and are sequentially arranged from top to bottom;
one end of the stretching beam is connected with the inner wall of the shell, the other end of the stretching beam is a free end, and a fiber grating for monitoring the elongation of the stretching beam is attached to the stretching beam;
the sensitization component comprises a first torque rod which is rotationally connected with the shell through a first rotating shaft, a second torque rod which is rotationally connected with the shell through a second rotating shaft, and a torque transmission mechanism which is connected with the first rotating shaft and the second rotating shaft; the first torque rod is connected with the counterweight through a first rigid rope, and the second torque rod is connected with the free end of the stretching beam through a second rigid rope; the acting force of the second moment rod on the tension beam is larger than the acting force of the counterweight on the first moment rod;
the torque transmission mechanism comprises a first gear arranged on the first rotating shaft and a second gear arranged on the second rotating shaft, and the second gear is meshed with the first gear.
2. The sensitized fiber grating inclinometer according to claim 1, characterized in that: the sensitization type fiber bragg grating inclinometer further comprises a limiting piece, wherein the limiting piece is located between the first moment rod and the counterweight and used for limiting the acting force acting on the first moment rod to be perpendicular to the first moment rod.
3. The sensitized fiber grating inclinometer according to claim 2, characterized in that: the limiting piece comprises two fixed pulleys arranged at intervals, and the two fixed pulleys are respectively in rotating connection with the shell; a channel for the first rigid rope to pass through is formed between the two fixed pulleys, and the two fixed pulleys are respectively connected with the first rigid rope.
4. The sensitized fiber grating inclinometer according to any one of claims 1 to 3, characterized in that: the shell comprises a barrel with a downward opening, and a through hole for the outgoing line of the fiber grating to penetrate out is formed in a top plate of the barrel.
5. The sensitized fiber grating inclinometer according to any one of claims 1 to 3, characterized in that: the sensitization type fiber bragg grating inclinometer further comprises a support frame arranged in the shell, and the first rotating shaft and the second rotating shaft are respectively and rotatably arranged on the support frame.
6. The sensitized fiber grating inclinometer according to claim 5, characterized in that: the support frame comprises a first support beam and a second support beam which are parallel to each other, two ends of the first support beam and two ends of the second support beam are connected with the inner wall of the shell respectively, the first rotating shaft is rotatably arranged on the first support beam, and the second rotating shaft is rotatably arranged on the second rotating beam.
7. The sensitized fiber grating inclinometer according to claim 6, characterized in that: the support frame is still including connecting first supporting beam with the tie-beam of second supporting beam, the tie-beam slope sets up.
8. The sensitized fiber grating inclinometer according to claim 6, characterized in that: the middle part of first pivot with first supporting beam rotates to be connected, the middle part of second pivot with second supporting beam rotates to be connected, first gear with first moment pole branch is located the both ends of first pivot, the second gear with second moment pole branch is located the both ends of second pivot.
9. The sensitized fiber grating inclinometer according to any one of claims 1 to 3, characterized in that: the first torque rod and the second torque rod are respectively connected with the corresponding rotating shaft at one end, the other end is a free end, the length of the first torque rod is larger than that of the second torque rod, and the first rigid rope is arranged at the free end of the first torque rod.
10. The sensitized fiber grating inclinometer according to claim 9, characterized in that: the first torque rod and the second torque rod are respectively provided with two first torque rods which are positioned on the same straight line and are respectively arranged on two sides of the first rotating shaft and two second torque rods which are positioned on the same straight line and are respectively arranged on two sides of the second rotating shaft, the first rigid rope is connected with the free end of the first torque rod, and the second rigid rope is connected with the second torque rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201922055153.7U CN210570636U (en) | 2019-11-25 | 2019-11-25 | Sensitization type fiber grating inclinometer |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922055153.7U CN210570636U (en) | 2019-11-25 | 2019-11-25 | Sensitization type fiber grating inclinometer |
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| CN210570636U true CN210570636U (en) | 2020-05-19 |
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| CN201922055153.7U Expired - Fee Related CN210570636U (en) | 2019-11-25 | 2019-11-25 | Sensitization type fiber grating inclinometer |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115183741A (en) * | 2022-07-01 | 2022-10-14 | 武汉理工大学 | Fiber grating tilt angle sensor |
-
2019
- 2019-11-25 CN CN201922055153.7U patent/CN210570636U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115183741A (en) * | 2022-07-01 | 2022-10-14 | 武汉理工大学 | Fiber grating tilt angle sensor |
| CN115183741B (en) * | 2022-07-01 | 2023-12-26 | 武汉理工大学 | Optical fiber grating inclination sensor |
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Granted publication date: 20200519 Termination date: 20201125 |