Reflection-type leveling optical fiber sensor

Abstract

A reflection-type leveling optical fiber sensor belongs to the technical field of optical fiber sensors and comprises an optical fiber head, an optical fiber lead, an optical fiber amplifier, an annular flange plate, a leveling assembly and a clamping assembly. The leveling assembly and the optical fiber amplifier are arranged above the annular flange plate in parallel; the clamping assembly is arranged above the leveling assembly; the optical fiber head is arranged on the clamping assembly and connected with the optical fiber amplifier through an optical fiber wire. The optical fiber leveling device has a leveling function, light emitted by the optical fiber head can accurately and vertically irradiate downwards through leveling operation, light reflected from the surface of a detected object can be accurately received, and the detection precision is improved; according to the utility model, the dismounting structure and the adjusting structure of the optical fiber head are simplified, the mounting and dismounting convenience of the optical fiber head is improved, the mounting and debugging difficulty of the optical fiber head is reduced, the long-term stability of the optical fiber sensor is improved, and the applicability of the optical fiber sensor to occasions with narrow space or strict weight requirements is improved; and meanwhile, the production cost is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of fiber optic sensors, and particularly relates to a reflective adjustable leveling fiber optic sensor. Background Art

[0002] A fiber optic sensor is a sensor that converts the state of a measured object into a measurable optical signal. Its working principle is to send the light beam incident from a light source into a modulator through an optical fiber wire. In the modulator, it interacts with the external measured parameters, causing the optical properties of the light to change, and then becoming a modulated optical signal. After that, it enters an optoelectronic device, and finally, it becomes the measured parameter after being demodulated by a demodulator. Therefore, fiber optic sensors have the functions of transmitting light beams and optical modulators, and have been widely used in various detection and measurement scenarios.

[0003] However, traditional reflective fiber optic sensors generally lack a leveling function. Therefore, when measuring, it is impossible to ensure that the light emitted from the fiber optic head is accurately vertically downward, resulting in the inability to accurately receive the light reflected from the surface of the measured object, and the detection accuracy of traditional reflective fiber optic sensors is usually low.

[0004] In addition, the disassembly and assembly structure and adjustment structure of the fiber optic head of traditional reflective fiber optic sensors are still not ideal. There are either problems with poor convenience in installation and disassembly, or problems with cumbersome processes in adjusting the angle of the fiber optic head. This not only increases the difficulty of installing and debugging the fiber optic head, but also there is a problem that the long-term stability of the fiber optic sensor deteriorates due to mechanical component wear.

[0005] Furthermore, traditional reflective fiber optic sensors also have the problem that the fiber optic head cannot be accurately positioned, which will also affect the measurement accuracy to a certain extent. And these traditional reflective fiber optic sensors are usually large in volume and weight. Therefore, their applicability in occasions with narrow space or strict weight requirements will be reduced, and the more complex structure will also lead to an increase in production costs. Summary of the Utility Model

[0006] Aiming at the problems existing in the prior art, the utility model provides a reflective adjustable leveling fiber optic sensor, which has a leveling function and can achieve accurate vertical downward irradiation of the light emitted from the fiber optic head through a leveling operation, so as to accurately receive the light reflected from the surface of the measured object, effectively improving the detection accuracy; simplifies the disassembly and assembly structure and adjustment structure of the fiber optic head, not only improving the convenience of installing and disassembling the fiber optic head, but also greatly reducing the difficulty of installing and debugging the fiber optic head, alleviating the wear of mechanical components, improving the long-term stability of the fiber optic sensor, reducing the volume and weight of the fiber optic sensor, improving the applicability of the fiber optic sensor in occasions with narrow space or strict weight requirements, and at the same time reducing the production cost.

[0007] To achieve the above object, the present utility model adopts the following technical solutions: A reflective adjustable leveling fiber optic sensor, comprising an optical fiber head, an optical fiber wire, an optical fiber amplifier, an annular flange, a leveling assembly and a clamping assembly; the leveling assembly and the optical fiber amplifier are arranged in parallel above the annular flange; the clamping assembly is arranged above the leveling assembly; the optical fiber head is arranged on the clamping assembly, and the optical fiber head is connected to the optical fiber amplifier through the optical fiber wire.

[0008] The optical fiber amplifier is fixedly connected to the annular flange through a support frame.

[0009] An annular elastic gasket is fixedly attached to the lower surface of the annular flange, and the annular elastic gasket is coaxially distributed with the annular flange.

[0010] A display screen and a control button are arranged on the surface of the optical fiber amplifier.

[0011] The leveling assembly includes a horizontal annular plate and a leveling actuator; the horizontal annular plate is coaxially distributed with the annular flange; the leveling actuator is located between the horizontal annular plate and the annular flange, and the number of leveling actuators is several, and several leveling actuators are evenly distributed along the circumferential direction of the horizontal annular plate.

[0012] The leveling actuator includes a leveling bolt, a leveling nut and a leveling universal ball joint; the lower end of the leveling bolt is rotationally connected to the upper surface of the annular flange through the leveling universal ball joint; the leveling nut is screwed on the upper end of the leveling bolt, and the leveling nut is fixedly connected to the lower surface of the horizontal annular plate.

[0013] A protective sleeve is vertically and fixedly installed in the middle of the horizontal annular plate, and the protective sleeve is coaxially distributed with the horizontal annular plate.

[0014] The clamping assembly includes a first clamping actuator and a second clamping actuator; the first clamping actuator and the second clamping actuator are symmetrically distributed with respect to the center of the horizontal annular plate, and the phase angle between the first clamping actuator and the second clamping actuator is 180°.

[0015] The first clamping actuator and the second clamping actuator have the same structure, and both include an arc-shaped chuck, a clamping bolt, a support vertical plate and a clamping bearing joint; the support vertical plate is vertically and fixedly installed on the upper surface of the horizontal annular plate, and a threaded hole is opened on the plate body of the support vertical plate, and the clamping bolt is horizontally installed in the threaded hole of the support vertical plate; the clamping bolt is rotationally connected to the convex center of the arc-shaped chuck through the clamping bearing joint; the optical fiber head is fixedly clamped between the two arc-shaped chucks, and the optical fiber head is coaxially distributed with the horizontal annular plate.

[0016] The beneficial effects of the present utility model:

[0017] The reflective adjustable-level optical fiber sensor of the present utility model has a leveling function, and can achieve precise vertical downward irradiation of the light emitted from the optical fiber head through the leveling operation, so as to accurately receive the light reflected from the surface of the object to be measured, effectively improving the detection accuracy; it simplifies the disassembly and assembly structure and the adjustment structure of the optical fiber head, not only improving the convenience of installation and disassembly of the optical fiber head, but also greatly reducing the difficulty of installation and debugging of the optical fiber head, alleviating the wear of mechanical components, enhancing the long-term stability of the optical fiber sensor, reducing the volume and weight of the optical fiber sensor, improving the applicability of the optical fiber sensor to occasions with narrow space or strict weight requirements, and at the same time reducing the production cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 FIG. 6 is a schematic structural diagram (viewpoint one) of a reflective adjustable-level optical fiber sensor of the present utility model;

[0019] Figure 2 FIG. 10 is a schematic structural diagram (viewpoint two) of a reflective adjustable-level optical fiber sensor of the present utility model;

[0020] Figure 3 FIG. 14 is a schematic assembly structure diagram of the clamping assembly, the horizontal annular plate and the protective sleeve of the present utility model.

[0021] In the figure, 1 - optical fiber head, 2 - optical fiber wire, 3 - optical fiber amplifier, 4 - annular flange, 5 - support frame, 6 - annular elastic gasket, 7 - display screen, 8 - control button, 9 - horizontal annular plate, 10 - leveling bolt, 11 - leveling nut, 12 - leveling universal ball joint, 13 - protective sleeve, 14 - arc-shaped chuck, 15 - clamping bolt, 16 - support vertical plate, 17 - clamping bearing joint. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] The following further describes the present utility model in detail with reference to the accompanying drawings and specific embodiments.

[0023] As Figures 1 to 3 shown, a reflective adjustable-level optical fiber sensor includes an optical fiber head 1, an optical fiber wire 2, an optical fiber amplifier 3, an annular flange 4, a leveling assembly and a clamping assembly; the leveling assembly and the optical fiber amplifier 3 are arranged in parallel above the annular flange 4; the clamping assembly is arranged above the leveling assembly; the optical fiber head 1 is arranged on the clamping assembly, and the optical fiber head 1 is connected to the optical fiber amplifier 3 through the optical fiber wire 2.

[0024] The optical fiber amplifier 3 is fixedly connected to the annular flange 4 through a support frame 5.

[0025] An annular elastic gasket 6 is fixedly attached to the lower surface of the annular flange 4, and the annular elastic gasket 6 is coaxially distributed with the annular flange 4.

[0026] A display screen 7 and control buttons 8 are arranged on the surface of the optical fiber amplifier 3.

[0027] The leveling assembly includes a horizontal annular plate 9 and a leveling actuator; the horizontal annular plate 9 is coaxially distributed with the annular flange 4; the leveling actuator is located between the horizontal annular plate 9 and the annular flange 4, and the number of leveling actuators is several, and several leveling actuators are evenly distributed along the circumferential direction of the horizontal annular plate 9.

[0028] The leveling actuator includes a leveling bolt 10, a leveling nut 11 and a leveling universal ball joint 12; the lower end of the leveling bolt 10 is rotatably connected to the upper surface of the annular flange 4 through the leveling universal ball joint 12; the leveling nut 11 is screwed on the upper end of the leveling bolt 10, and the leveling nut 11 is fixedly connected to the lower surface of the horizontal annular plate 9.

[0029] A protective sleeve 13 is vertically and fixedly installed in the middle of the horizontal annular plate 9, and the protective sleeve 13 is coaxially distributed with the horizontal annular plate 9.

[0030] The clamping assembly includes a first clamping actuator and a second clamping actuator; the first clamping actuator and the second clamping actuator are symmetrically distributed with respect to the center of the horizontal annular plate 9, and the phase angle between the first clamping actuator and the second clamping actuator is 180°.

[0031] The first clamping actuator and the second clamping actuator have the same structure, and both include an arc-shaped chuck 14, a clamping bolt 15, a supporting vertical plate 16 and a clamping bearing joint 17; the supporting vertical plate 16 is vertically and fixedly installed on the upper surface of the horizontal annular plate 9, and a threaded hole is formed in the plate body of the supporting vertical plate 16, and the clamping bolt 15 is horizontally inserted into the threaded hole of the supporting vertical plate 16; the clamping bolt 15 is rotatably connected to the center of the convex surface of the arc-shaped chuck 14 through the clamping bearing joint 17; the optical fiber head 1 is fixedly clamped between the two arc-shaped chucks 14, and the optical fiber head 1 is coaxially distributed with the horizontal annular plate 9.

[0032] The following describes a usage process of the present invention with reference to the accompanying drawings:

[0033] In this embodiment, the number of leveling actuators is three; the annular elastic gasket 6 is made of silicone rubber, and the annular elastic gasket 6 is provided with flange holes exactly the same as those on the annular flange 4; the support frame 5 is made of aluminum alloy and adopts an inverted L-shaped structure. The vertical arm of the support frame 5 is fixedly connected to the upper surface of the annular flange 4, and the fiber optic amplifier 3 is fixedly installed on the upper surface of the horizontal arm of the support frame 5; the vertical arm of the support frame 5 is fixedly connected to the upper surface of the annular flange 4 by welding, the fiber optic amplifier 3 is fixedly connected to the upper surface of the horizontal arm of the support frame 5 by bolts, the lower end of the support vertical plate 16 is fixedly connected to the upper surface of the horizontal annular plate 9 by welding, the leveling nut 11 is fixedly connected to the lower surface of the horizontal annular plate 9 by welding, and the protective sleeve 13 is fixedly connected to the inner hole of the horizontal annular plate 9 by welding.

[0034] Before use, first fix the entire fiber optic sensor above the object to be measured through the annular flange 4, then place the fiber optic head 1 between the two arc-shaped chucks 14, and then synchronously screw the two clamping bolts 15 until the fiber optic head 1 is reliably clamped between the two arc-shaped chucks 14, so that the fiber optic head 1 is coaxial with the horizontal annular plate 9.

[0035] After the fiber optic head 1 is clamped and fixed, use a spirit level to detect the level of the upper surface of the horizontal annular plate 9. If the requirement is not met, then at a certain position, finely adjust the height of the leveling nut 11 by screwing the leveling bolt 10. As the height position of the leveling nut 11 changes, the level of the horizontal annular plate 9 is adjusted until the level of the horizontal annular plate 9 meets the requirement. At this time, the fiber optic head 1 is in an accurate vertical state.

[0036] When the fiber optic head 1 emits light, since the fiber optic head 1 has been in an accurate vertical state after leveling, the light emitted by the fiber optic head also automatically remains accurately vertical and shines downward, so that the light reflected from the surface of the object to be measured can be accurately received, thereby effectively improving the detection accuracy.

[0037] After the fiber optic head 1 accurately receives the light reflected from the surface of the object to be measured, it will be directly transmitted to the fiber optic amplifier 3 through the fiber optic wire 2. The fiber optic amplifier 3 will convert the optical signal into an electrical signal, and then boost the signal strength through the built-in amplification circuit of the fiber optic amplifier 3 to optimize the signal quality, that is, effectively boost the signal strength on the premise of ensuring the optical signal transmission quality and optimize the performance of the fiber optic access network. At the same time, with the protection of the fiber optic head 1 by the protective sleeve 13 and the corrosion resistance and durability of the annular elastic gasket 6, not only the safety and reliability of the fiber optic head 1 are improved, but also the applicability of the fiber optic sensor in complex environments is further enhanced, enabling the fiber optic sensor to be widely used in industrial automation, environmental monitoring, medical detection and other fields.

[0038] During the use of the fiber optic sensor, the signal processed by the fiber optic amplifier 3 can be directly displayed on the display screen 7, and at the same time, the working mode and parameters of the fiber optic amplifier 3 can be adjusted through the control buttons 8.

[0039] After the use of the fiber optic sensor is completed, simply unscrew the clamping bolt 15 in the reverse direction to release the clamping force of the arc-shaped chuck 14 on the fiber optic head 1, so that the disassembly of the fiber optic head 1 can be quickly achieved.

[0040] The solutions in the embodiments are not intended to limit the protection scope of the present invention. Any equivalent implementation or modification without departing from the present invention is included in the protection scope of the present invention.

Claims

1. A reflective leveling optical fiber sensor, characterized in that: It includes an optical fiber head, an optical fiber wire, an optical fiber amplifier, an annular flange, a leveling component and a clamping component; the leveling component and the optical fiber amplifier are arranged in parallel above the annular flange; the clamping component is arranged above the leveling component; the optical fiber head is arranged on the clamping component, and the optical fiber head is connected to the optical fiber amplifier through the optical fiber wire.

2. A reflective leveling optical fiber sensor according to claim 1, characterized in that: The optical fiber amplifier is fixedly connected to the annular flange through a supporting frame.

3. A reflective levelable optical fiber sensor according to claim 1, characterized in that: An annular elastic gasket is fixedly mounted on the lower surface of the annular flange, and the annular elastic gasket is coaxially distributed with the annular flange.

4. A reflective leveling optical fiber sensor according to claim 1, characterized in that: A display screen and control buttons are arranged on the surface of the optical fiber amplifier.

5. The reflective levelable optical fiber sensor according to claim 1, characterized in that: The leveling assembly includes a horizontal annular plate and a leveling actuator; the horizontal annular plate is coaxially distributed with the annular flange; the leveling actuator is located between the horizontal annular plate and the annular flange, there are a number of leveling actuators, and the leveling actuators are evenly distributed along the circumferential direction of the horizontal annular plate.

6. A reflective levelable optical fiber sensor according to claim 5, characterized in that: The leveling actuator includes a leveling bolt, a leveling nut and a leveling universal ball joint; the lower end of the leveling bolt is rotatably connected to the upper surface of the annular flange through the leveling universal ball joint; the leveling nut is threaded on the upper end of the leveling bolt, and the leveling nut is fixedly connected to the lower surface of the horizontal annular plate.

7. A reflective levelable optical fiber sensor according to claim 5, characterized in that: A protective sleeve is vertically fixedly installed in the middle of the horizontal annular plate, and the protective sleeve is coaxially distributed with the horizontal annular plate.

8. The reflective levelable optical fiber sensor according to claim 1, characterized in that: The clamping assembly includes a first clamping actuator and a second clamping actuator; the first clamping actuator and the second clamping actuator are symmetrically distributed relative to the center of the horizontal annular plate, and the phase angle between the first clamping actuator and the second clamping actuator is 180°.

9. A reflective levelable optical fiber sensor according to claim 8, characterized in that: The first clamping actuator and the second clamping actuator have the same structure, both of which include an arc-shaped clamp, a clamping bolt, a support plate and a clamping bearing joint; the support plate is vertically fixedly installed on the upper surface of the horizontal annular plate, and a threaded hole is opened on the plate body of the support plate, and the clamping bolt is horizontally inserted into the threaded hole of the support plate; the clamping bolt is rotatably connected to the convex center of the arc-shaped clamp through the clamping bearing joint; the optical fiber head is fixedly clamped between the two arc-shaped clamps, and the optical fiber head is coaxially distributed with the horizontal annular plate.

Images