CN216012553U - Novel optical fiber pressure sensor - Google Patents
Novel optical fiber pressure sensor Download PDFInfo
- Publication number
- CN216012553U CN216012553U CN202122090578.9U CN202122090578U CN216012553U CN 216012553 U CN216012553 U CN 216012553U CN 202122090578 U CN202122090578 U CN 202122090578U CN 216012553 U CN216012553 U CN 216012553U
- Authority
- CN
- China
- Prior art keywords
- optical fiber
- pressure
- pressure sensor
- shell
- bearing plate
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Measuring Fluid Pressure (AREA)
Abstract
The utility model discloses a novel optic fibre pressure sensor, including the casing: the inner wall open end of casing is provided with the bearing plate, the one end of casing is provided with the transmission optic fibre that extends to in the casing, and the other end is provided with the receiving optic fibre that extends to in the casing, the bottom of bearing plate passes through the biography pressure subassembly of multiple spot distributing type and is connected with receiving optic fibre. The utility model discloses in, this pressure sensor adopts the biography pressure subassembly of multiple spot distributing type, can make its deformation for receiving optic fibre with the even and comprehensive conduction of the pressure signal that receives on the bearing plate, takes place the phenomenon that local downshifting range differs when avoiding bearing plate atress conduction inhomogeneous to ensure to receive optic fibre and can receive the accurate and efficient of pressure on the bearing plate, and then improved the testing result accuracy of follow-up optic fibre pressure sensor to pressure.
Description
Technical Field
The utility model relates to an electronic equipment technical field especially relates to a novel optic fibre pressure sensor.
Background
The optical fiber pressure sensor is a pressure sensor made by utilizing the relation between the propagation characteristic of light in an optical fiber material and the pressure acting on a photoelastic element, and the optical fiber pressure sensing mechanism has the advantages that a measurement signal is not influenced by factors such as fluctuation of a light source, bending loss of an optical fiber, connection loss, aging of a detector and the like, the unclear phase measurement and the requirement on an inherent reference point in a common interference type sensor are avoided, the wavelength division multiplexing technology can be conveniently used, and therefore the optical fiber pressure sensor has a wide use basis in the society.
Chinese patent publication No.: CN202092818U discloses "optical fiber pressure sensor", which includes a tubular housing, and is characterized by further including: more than one stress buffer baffle plate with through holes, a constant elastic membrane, an optical fiber collimator and an end cover; one end of the shell is provided with a connecting hole, the other end of the shell is provided with a mounting hole, and a stress buffer cavity for communicating the connecting hole and the mounting hole is arranged between the connecting hole and the mounting hole; the stress buffer baffle is arranged in the stress buffer cavity, the constant-elasticity diaphragm and an end cover are fixed in the mounting hole, the constant-elasticity diaphragm is arranged between the end cover and the stress buffer cavity, an optical resonant cavity with a certain space is formed between the end cover and the constant-elasticity diaphragm, the constant-elasticity diaphragm separates the stress buffer cavity from the optical resonant cavity, the optical fiber collimator penetrates through the end cover and is fixedly connected with the end cover in a sealing way, and the optical fiber collimator is positioned on the outer part of the end cover and is connected with an optical fiber with the axis vertical to the constant-elasticity diaphragm; the optical resonant cavity is provided with an air hole communicated with the outside.
However, when the existing optical fiber pressure sensor transmits the pressure, the contact surface for transmitting the pressure is small due to the small number of pressure receiving points, and the pressure cannot be transmitted to the detecting element accurately and comprehensively, so that the subsequent pressure detection is inaccurate.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a adopt comprehensive and even conduction mode of pressure, improve the novel optic fibre pressure sensor of pressure detection accuracy.
In order to achieve the above object, the present invention provides the following technical solutions: a novel fiber optic pressure sensor, comprising a housing:
a pressure bearing plate is arranged at the opening end of the inner wall of the shell;
one end of the shell is provided with a transmitting optical fiber extending into the shell, and the other end of the shell is provided with a receiving optical fiber extending into the shell;
the bottom of the pressure bearing plate is connected with the receiving optical fiber through a multipoint distributed pressure transmission assembly.
As a further description of the above technical solution:
the transmission assembly comprises a transmission pressure rod with a T-shaped structure, the vertical end of the transmission pressure rod is connected with the receiving optical fiber, and the horizontal end of the transmission pressure rod is provided with a plurality of contacts which are distributed at equal intervals and connected with the bearing plate.
As a further description of the above technical solution:
the device also comprises a lifting component;
the lifting component comprises a vertical rod arranged at the bottom end of the inner wall of the shell, a transverse plate is sleeved on the vertical rod, an elastic contact is arranged at the top of the transverse plate, and the elastic contact is connected with the receiving optical fiber through a moving component.
As a further description of the above technical solution:
the movable assembly comprises a movable clamping sleeve sleeved on the receiving optical fiber, a movable rod is arranged at the bottom of the movable clamping sleeve, and the movable rod is connected with the elastic contact.
As a further description of the above technical solution:
also includes a collision component;
conflict subassembly includes that the screw rod of screw thread through setting on the casing, and the tip that just extends to in the casing on the screw rod is provided with the cam with diaphragm contact.
As a further description of the above technical solution:
the transmitting optical fiber is sleeved with a fixing jacket, and a fixing rod in contact with the bottom end of the inner wall of the shell is arranged at the bottom of the fixing jacket.
As a further description of the above technical solution:
and the shell is provided with an operation hole matched with the screw rod.
As a further description of the above technical solution:
and the inner wall of the vertical end of the shell is provided with a sunken part matched with the pressure bearing plate.
In the above technical scheme, the utility model provides a pair of novel optic fibre pressure sensor has following beneficial effect:
this pressure sensor adopts the pressure transmission subassembly of multiple spot distributing type, can make its deformation for receiving optic fibre with the even and comprehensive conduction of the pressure signal that receives on the bearing plate, takes place the phenomenon that local amplitude of shifting down differs when avoiding bearing plate atress conduction inhomogeneous to ensure to receive optic fibre and can receive the accurate and efficient of pressure on the bearing plate, and then improved the testing result accuracy of follow-up optic fibre pressure sensor to pressure.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the present invention, and other drawings can be obtained by those skilled in the art according to these drawings.
Fig. 1 is a schematic structural diagram of a novel optical fiber pressure sensor according to an embodiment of the present invention;
fig. 2 is a schematic view of an internal structure of a housing according to an embodiment of the present invention;
fig. 3 is a schematic view of a partial structure of a joint of the collision component and the lifting component provided in the embodiment of the present invention.
Description of reference numerals:
1. an emission optical fiber; 2. a pressure bearing plate; 21. a contact; 22. a pressure transmission rod; 3. receiving an optical fiber; 4. a housing; 41. a fixing jacket; 42. fixing the rod; 43. an elastic contact; 44. a collision component; 441. a cam; 442. a screw; 45. a lifting assembly; 451. erecting a rod; 452. a transverse plate; 46. moving the jacket; 47. a travel bar; 48. a recessed portion; 5. and (6) operating the hole.
Detailed Description
In order to make the technical solution of the present invention better understood by those skilled in the art, the present invention will be further described in detail with reference to the accompanying drawings.
As shown in fig. 1, a novel optical fiber pressure sensor includes a housing 4:
the open end of the inner wall of the shell 4 is provided with a bearing plate 2;
one end of the shell 4 is provided with a transmitting optical fiber 1 extending into the shell 4, and the other end is provided with a receiving optical fiber 3 extending into the shell 4;
the bottom of the pressure bearing plate 2 is connected with the receiving optical fiber 3 through a multipoint distributed pressure transmission assembly.
In this embodiment, the transmitting optical fiber 1 and the receiving optical fiber 3 are respectively connected to a cable of an external monitoring device, and the housing 4 is placed in a pressed place, so that the bearing plate 2 contacts with a force application object, when the bearing plate 2 is forced to move downwards, a pressure signal on the bearing plate 2 can be uniformly and comprehensively transmitted to the receiving optical fiber 3 through a multipoint distributed pressure transmission assembly to deform the receiving optical fiber 3, the phenomenon that local downward movement amplitude is different when the bearing plate 2 is not uniformly transmitted due to stress is avoided, at the moment, according to the offset amplitude of the ends of the transmitting optical fiber 1 and the receiving optical fiber 3, pressure data can be detected by utilizing evanescent wave coupling, so that the receiving optical fiber 3 can accurately and efficiently receive the pressure on the bearing plate 2, and the accuracy of the detection result of a subsequent optical fiber pressure sensor on the pressure is improved.
As shown in fig. 2, the transmission assembly includes the biography pressure pole 22 of T shape structure, the vertical end of biography pressure pole 22 is connected with receiving optic fibre 3, the horizontal end of biography pressure pole 22 is provided with a plurality of equidistance distribution and the contact 21 of being connected with bearing plate 2, contact 21 is the lower surface at bearing plate 2 of angular structure setting such as annular to be connected with biography pressure pole 22, can give biography pressure pole 22 with the even and comprehensive conduction of pressure on the bearing plate 2, can realize that pressure signal's accurate conduction detects.
As shown in fig. 2 and fig. 3, the optical fiber receiving device further includes a lifting assembly 45, the lifting assembly 45 includes a vertical rod 451 disposed at the bottom end of the inner wall of the housing 4, a horizontal plate 452 is sleeved on the vertical rod 451, and an elastic contact 43 is disposed at the top of the horizontal plate 452, and the elastic contact 43 is connected to the receiving optical fiber 3 through a moving assembly, when the receiving optical fiber 3 is moved downwards by pressure, the receiving optical fiber 3 will press the elastic contact 43 to be compressed and deformed, and when the pressure signal is lost, the elastic contact 43 will be reset, so that the receiving optical fiber 3 is reset to the initial position again.
As shown in fig. 2, the moving assembly includes a moving jacket 46 sleeved on the receiving optical fiber 3, a moving rod 47 is disposed at the bottom of the moving jacket 46, and the moving rod 47 is connected to the elastic contact 43, the moving jacket 46 can play a role of limiting and clamping the position of the receiving optical fiber 3, so as to ensure that the receiving optical fiber 3 is in a linear and straight state and is not bent.
As shown in fig. 1-3, the optical fiber connector further includes a collision component 44, the collision component 44 includes a screw rod 442 disposed on the housing 4 in a threaded manner, a cam 441 contacting with the horizontal plate 452 is disposed on an end portion of the screw rod 442 extending into the housing 4, an operation hole 5 adapted to the screw rod 442 is disposed on the housing 4, a tool adapted to the screw rod 442 is inserted into the operation hole 5 and engages with the screw rod 442, and the screw rod 442 is rotated to drive the cam 441 to rotate, at which time the cam 441 will collide with the horizontal plate 452, and under the rotation change of the cam 441, a lifting driving effect is performed on the horizontal plate 452, so that the horizontal plate 452 can move on the vertical rod 451, thereby changing a horizontal position of an end of the receiving optical fiber 3, and adjusting real-time positions of ends of the transmitting optical fiber 1 and the receiving optical fiber 3.
As shown in fig. 2, the emission optical fiber 1 is sleeved with a fixing jacket 41, and the bottom of the fixing jacket 41 is provided with a fixing rod 42 contacting with the bottom end of the inner wall of the housing 4, so that the position of the emission optical fiber 1 can be limited and clamped, and the emission optical fiber 1 is ensured to be in a linear and straight state without bending.
As shown in fig. 2, the inner wall of the vertical end of the housing 4 is provided with a recess 48 adapted to the pressure-bearing plate 2, and the recess can be adapted to the outer wall of the pressure-bearing plate 2 to slide, so as to ensure that the pressure-bearing plate 2 maintains a dynamic balance state when moving downwards, and avoid the inclination of the pressure-bearing plate.
While certain exemplary embodiments of the present invention have been described above by way of illustration only, it will be apparent to those of ordinary skill in the art that the described embodiments may be modified in various different ways without departing from the spirit and scope of the present invention. Accordingly, the drawings and description are illustrative in nature and should not be construed as limiting the scope of the invention.
Claims (8)
1. A novel optical fiber pressure sensor comprises a shell (4), and is characterized in that:
a pressure bearing plate (2) is arranged at the opening end of the inner wall of the shell (4);
one end of the shell (4) is provided with a transmitting optical fiber (1) extending into the shell (4), and the other end is provided with a receiving optical fiber (3) extending into the shell (4);
the bottom of the pressure bearing plate (2) is connected with the receiving optical fiber (3) through a multipoint distributed pressure transmission assembly.
2. The novel optical fiber pressure sensor according to claim 1, characterized in that: the pressure transmission assembly comprises a pressure transmission rod (22) of a T-shaped structure, the vertical end of the pressure transmission rod (22) is connected with the receiving optical fiber (3), and the horizontal end of the pressure transmission rod (22) is provided with a plurality of contacts (21) which are distributed at equal intervals and connected with the bearing plate (2).
3. The novel optical fiber pressure sensor according to claim 1, characterized in that: also comprises a lifting component (45);
lifting unit (45) is equipped with diaphragm (452) including setting up pole setting (451) in casing (4) inner wall bottom on pole setting (451), and the top of diaphragm (452) is provided with elasticity contact (43), and elasticity contact (43) are connected with receiving optic fibre (3) through removing the subassembly.
4. The novel optical fiber pressure sensor according to claim 3, characterized in that: the moving assembly comprises a moving jacket (46) sleeved on the receiving optical fiber (3), a moving rod (47) is arranged at the bottom of the moving jacket (46), and the moving rod (47) is connected with the elastic contact (43).
5. The novel optical fiber pressure sensor according to claim 1, characterized in that: further comprising a collision assembly (44);
the interference component (44) comprises a screw rod (442) which is arranged on the shell (4) in a penetrating mode through threads, and a cam (441) which is in contact with the transverse plate (452) is arranged at the end portion, extending into the shell (4), of the screw rod (442).
6. The novel optical fiber pressure sensor according to claim 1, characterized in that: the emission optical fiber (1) is sleeved with a fixing jacket (41), and the bottom of the fixing jacket (41) is provided with a fixing rod (42) which is in contact with the bottom end of the inner wall of the shell (4).
7. The novel optical fiber pressure sensor according to claim 1, characterized in that: and an operation hole (5) matched with the screw rod (442) is formed in the shell (4).
8. The novel optical fiber pressure sensor according to claim 1, characterized in that: and a concave part (48) matched with the pressure bearing plate (2) is arranged on the inner wall of the vertical end of the shell (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122090578.9U CN216012553U (en) | 2021-09-01 | 2021-09-01 | Novel optical fiber pressure sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122090578.9U CN216012553U (en) | 2021-09-01 | 2021-09-01 | Novel optical fiber pressure sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216012553U true CN216012553U (en) | 2022-03-11 |
Family
ID=80593559
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122090578.9U Active CN216012553U (en) | 2021-09-01 | 2021-09-01 | Novel optical fiber pressure sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216012553U (en) |
-
2021
- 2021-09-01 CN CN202122090578.9U patent/CN216012553U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106441511B (en) | Discrete liquid level sensor based on fiber Bragg grating technology | |
| CN102865900B (en) | Fiber Grating Liquid Depth Sensor and preparation method thereof | |
| CN110542385B (en) | Symmetrical wide-range fiber grating displacement sensor | |
| CN203432538U (en) | Fiber grating crack sensor | |
| CN101308054B (en) | Pressure transmitter for detection of a variable relative to a process fluid | |
| CN216012553U (en) | Novel optical fiber pressure sensor | |
| CN211123220U (en) | Flat cable testing device | |
| CN2935148Y (en) | Apparatus for measuring internal force of construction membrane and cable component | |
| CN207066392U (en) | Coating thickness detector | |
| CN115220087A (en) | Three-component optical fiber detector | |
| CN114397058B (en) | Optical fiber transmission type passive pressure sensor based on graded index lens | |
| CN2879148Y (en) | Reflected light intensity modulating type temperature sensor | |
| CN112378312B (en) | Device for measuring opening of gear bracket | |
| CN210464572U (en) | Target type flow sensor based on fiber bragg grating | |
| CN209706769U (en) | Shaft coupling coaxality measuring mechanism | |
| CN218271144U (en) | Gasket for measuring pressing force | |
| CN216284037U (en) | Self-resetting sensitization type pressure monitoring device based on fiber bragg grating | |
| CN110285878A (en) | A kind of the distributed optical fiber vibration sensing device and implementation method of high frequency sound | |
| CN110802595A (en) | Sensing device for mechanical arm, mechanical arm assembly and application | |
| CN219666674U (en) | Sample height measuring device on installation manipulator | |
| CN217484087U (en) | Rockwell hardness detection device | |
| CN218481044U (en) | Contactor contact abrasion detection mechanism and contactor | |
| CN221055929U (en) | Piezoresistive micro-touch detection probe and detection device | |
| CN216309314U (en) | Clamp remote-connected pressure gauge | |
| CN115420409A (en) | Gasket for measuring pressing force |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |