High-precision intelligent digital optical fiber sensor

Abstract

The utility model discloses a high-precision intelligent digital optical fiber sensor, which comprises a shell, a PCBA (printed circuit board assembly) board is arranged in the shell, a first hole site and a second hole site are arranged at the end part of the shell, a transmitting element and a receiving element are integrated on the circuit board, and the first hole site and the second hole site are communicated with each other. The positions of the transmitting element and the receiving element correspond to the first hole position and the second hole position, an optical fiber fastener is arranged on the shell and located among the first hole position, the second hole position, the transmitting element and the receiving element, and the optical fiber fastener comprises two fixed clamping plates, two movable clamping plates and a driving assembly. The driving assembly is used for driving the two movable clamping plates to be close to or away from the fixed clamping plate.

Description

Technical Field

[0001] This disclosure relates to the field of fiber optic sensor technology, and in particular to a high-precision intelligent digital fiber optic sensor. Background Technology

[0002] An optical fiber sensor is a device that senses and transmits external physical quantities through optical signals. Its core principle is to use external parameters (such as temperature, pressure, displacement, etc.) to modulate the intensity, wavelength, phase, polarization state, and other characteristics of the light transmitted in the optical fiber, and then extract the measured information through demodulation technology.

[0003] Fiber optic sensors require fiber optic cables for use. The fiber optic sensors are installed using fiber optic fasteners. Current fiber optic fasteners use plastic parts to deform and compress the fiber optic cable for fixation, which is not secure enough and can easily cause the fiber optic cable to be pulled and detached. Utility Model Content

[0004] This disclosure provides a high-precision intelligent digital fiber optic sensor to solve the technical problems recognized by the inventors.

[0005] This disclosure provides a high-precision intelligent digital fiber optic sensor, including a housing. A PCBA board is disposed inside the housing. A first hole and a second hole are provided at the ends of the housing. The circuit board integrates a transmitting element and a receiving element, the positions of which correspond to the first and second holes. The housing is located between the first hole, the second hole, and the transmitting element. A fiber optic fastener is disposed between the receiving element and the receiving element. The fiber optic fastener includes two fixed clamps, two movable clamps, and a driving assembly. The driving assembly is used to drive the two movable clamps to move closer to or further away from the fixed clamps.

[0006] Preferably, the optical fiber fastener includes a guide member, with guide grooves on both sides inside the guide member, fixed clamps fixedly connected to the guide grooves, and movable clamps movably connected to the guide grooves on both sides. A circular hole is formed between the movable clamps and the fixed clamps for fixing the optical fiber.

[0007] Preferably, the drive assembly includes a pressure plate and guide rods. Two guide rods are respectively disposed on both sides of the bottom of the pressure plate. The two guide rods pass through both sides of the movable clamping plate and the fixed clamping plate. The guide rods and the movable clamping plate are fixedly connected. Multiple springs are sleeved on the guide rods, and the two ends of the multiple springs abut against the fixed clamping plate and the movable clamping plate, respectively.

[0008] Preferably, the surface of the pressure plate is provided with a transverse guide rail, a locking tongue plate is movably connected to the transverse guide rail, the side of the guide member is provided with a locking groove, and the locking tongue plate can be embedded in the locking groove.

[0009] Preferably, the outer sides of the transmitting element and the receiving element are covered with light-shielding fixing members, and the side of the transmitting element and the receiving element near the PCBA board is provided with light-shielding rubber parts, and the light-shielding rubber parts are provided with holes that allow the pins of the transmitting element and the receiving element to pass through.

[0010] Preferably, a bandpass filter is provided inside the light-shielding fixing member at the front end of the transmitting element and the receiving element.

[0011] Preferably, the housing includes a bottom shell and a bracket, the bracket being fixedly connected to the upper part of the bottom shell, and the bracket is embedded with control buttons and a digital display module, the control buttons and the digital display module being electrically connected to the PCBA board.

[0012] Preferably, the end of the bracket is hinged with a transparent buckle, which rotates about the end hinged to the bracket, and can cover or open the control buttons and digital display module.

[0013] The main advantages of this disclosure are: the present invention uses a novel optical fiber fastener to fix the optical fiber, and uses a drive component to control two movable clamps to approach the fixed clamp, thereby fixing the optical fiber located between the movable clamp and the fixed clamp. This is more secure than the traditional deformation fixing through C-shaped notches, and avoids the risk of optical fiber falling off.

[0014] It should be understood that both the foregoing general description and the following detailed description are for illustrative purposes and do not necessarily limit the scope of this disclosure. The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate the subject matter of this disclosure. Furthermore, the specification and drawings serve to explain the principles of this disclosure. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the specific embodiments of this disclosure or the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this disclosure. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0016] Figure 1 This is a three-dimensional structural diagram of the fiber optic sensor according to an embodiment of the present disclosure;

[0017] Figure 2 This is an exploded view of the fiber optic sensor structure according to an embodiment of this disclosure;

[0018] Figure 3 This is a schematic diagram of the optical fastener structure according to an embodiment of the present disclosure;

[0019] Icons: 1-Outer shell; 101-Bottom shell; 1011-First hole; 1012-Second hole; 102-Bracket; 2-PCBA board; 301-Transmitting element; 302-Receiving element; 4-Fiber optic fastener; 41-Guide component; 411-Guide groove; 42-Fixed clamp; 43-Modible clamp; 44-Pressure plate; 45-Guide rod; 46-Spring; 47-Horizontal guide rail; 48-Lock tongue plate; 49-Lock groove; 5-Light-shielding fastener; 6-Light-shielding rubber component; 701-Control button; 702-Digital display module; 8-Transparent buckle. Detailed Implementation

[0020] The technical solutions of this disclosure will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this disclosure, and not all embodiments.

[0021] Based on the embodiments in this disclosure, all other embodiments obtained by those skilled in the art without inventive effort are within the scope of protection of this disclosure.

[0022] In the description of this disclosure, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this disclosure and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this disclosure. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0023] In the description of this disclosure, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linkage" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this disclosure based on the specific circumstances.

[0024] Example

[0025] like Figure 1-3As shown, this embodiment provides a high-precision intelligent digital fiber optic sensor, with a housing 1. A PCBA board 2 is disposed inside the housing 1. The end of the housing 1 has a first hole 1011 and a second hole 1012. The circuit board integrates a transmitting element 301 and a receiving element 302. The positions of the transmitting element 301 and the receiving element 302 correspond to the first hole 1011 and the second hole 1012. Fiber optic fasteners 4 are disposed between the first hole 1011, the second hole 1012 and the transmitting element 301 and the receiving element 302 in the housing 1.

[0026] In this embodiment, two optical fibers are fixed by optical fiber fasteners 4, with the single-core optical fiber connected to the transmitter and the multi-core optical fiber connected to the receiver. The PCBA board 2 controls the transmitter element 301 and the receiver element 302, converting the optical signal from the received optical fiber into an electrical signal for output, thus completing the detection.

[0027] Specifically, the fiber optic fastener 4 includes a guide 41, two fixed clamps 42, two movable clamps 43, and a drive assembly, wherein the drive assembly is used to drive the two movable clamps 43 to move closer to or further away from the fixed clamps 42.

[0028] Specifically, the guide member 41 is fixedly installed inside the housing 1 by snap-fit. Guide grooves 411 are respectively opened on both sides of the inside of the guide member 41. Two fixed clamping plates 42 are integrally formed in the guide grooves 411. The two movable clamping plates 43 are respectively movably connected to the guide grooves 411 on both sides. The two movable clamping plates 43 are controlled by the drive component to move closer to or further away from the fixed clamping plates 42. The two movable clamping plates 43 and the fixed clamping plates 42 are paired to form two sets. When a movable clamping plate 43 and a fixed clamping plate 42 are close to each other, they form a hole with a circular cross section for fixing the optical fiber. The optical fiber is placed between the fixed clamping plate 42 and the movable clamping plate 43. Then, the drive component drives the movable clamping plate 43 to move downward to clamp the optical fiber to complete the fixation. When disassembling, the movable clamping plate 43 is moved upward to separate it from the fixed clamping plate 42 to release the fixation of the optical fiber.

[0029] Furthermore, the driving assembly includes a pressure plate 44 and guide rods 45. Two guide rods 45 are respectively disposed on both sides of the bottom of the pressure plate 44, and the two guide rods 45 pass through both sides of the movable clamping plate 43 and the fixed clamping plate 42. The guide rods 45 and the movable clamping plate 43 are fixedly connected. Multiple springs 46 are sleeved on the guide rods 45, with their ends respectively abutting against the fixed clamping plate 42 and the movable clamping plate 43. There are four springs 46, respectively disposed on both sides of the two sets of fixed clamping plates 42 and movable clamping plates 43. When the pressure plate 44 moves downward, the movable clamping plate 43 moves downward following the guide rods 45, bringing the movable clamping plate 43 closer to the fixed clamping plate 42. At this time, the springs 46 are in a compressed state, releasing the restriction on the pressure plate 44. The elastic force of the springs 46 causes the movable clamping plate 43 to move upward away from the fixed clamping plate 42.

[0030] Furthermore, the surface of the pressure plate 44 is provided with a transverse guide rail 47, and a locking tongue plate 48 is movably connected to the transverse guide rail 47. The side of the guide member 41 is provided with a locking groove 49, and the locking tongue plate 48 can be embedded in the locking groove 49. First, push the locking tongue plate 48 to move away from the locking groove 49, then press the locking tongue plate 48 to drive the pressure plate 44 downward. After moving to the bottom (the movable clamping plate 43 and the fixed clamping plate 42 abut against each other), push the locking tongue plate 48 into the locking groove 49. The locking groove 49 restricts the locking tongue plate 48, preventing it from moving upward due to the force of the spring 46. When it is necessary to remove the optical fiber, pull the locking tongue plate 48 out of the range of the locking groove 49. Then, the elastic force of the spring 46 pushes the guide rod 45 upward, causing the movable clamping plate 43 and the fixed clamping plate 42 to separate, and the optical fiber can be easily removed.

[0031] Furthermore, a light-shielding fixing member 5 is provided on the outer side of the transmitting element 301 and the receiving element 302. The light-shielding fixing member 5 is fixed inside the outer shell 1 by snap-fit. The transmitting element 301 and the receiving element 302 are embedded inside the light-shielding fixing member 5, and are fixed and blocked from light by the light-shielding fixing member 5. A light-shielding rubber member 6 is provided on the side of the transmitting element 301 and the receiving element 302 near the PCBA board 2. The light-shielding rubber member 6 has holes that allow the pins of the transmitting element 301 and the receiving element 302 to pass through. The light-shielding rubber member 6 is used to block light from the sides of the transmitting element 301 and the receiving element 302. The transmitting element 301 and the receiving element 302 are installed in the light-shielding fixing member 5. After the pins pass through the light-shielding rubber member 6, they are connected and conductive to the PCBA board 2. The light-shielding fixing member 5 and the light-shielding rubber member 6 block light from all sides of the transmitting element 301 and the receiving element 302, avoiding the influence of external light and improving the detection accuracy.

[0032] Furthermore, a bandpass filter is disposed inside the light-shielding fixing member 5 at the front end of the transmitting element 301 and the receiving element 302. The bandpass filter allows the sensor to receive light signals only within a specific wavelength range, eliminating other interfering wavelengths, thereby focusing on key information and improving measurement accuracy.

[0033] Furthermore, the outer casing 1 includes a bottom shell 101 and a bracket 102. The bracket 102 is fixedly connected to the upper part of the bottom shell 101. A control button 701 and a digital display module 702 are embedded in the bracket 102. The control button 701 and the digital display module 702 are electrically connected to the PCBA board 2. Parameters can be adjusted via the control button 701, and the digital display module 702 is used to display information, allowing users to intuitively observe measurement data.

[0034] Furthermore, a transparent buckle 8 is hinged to the end of the bracket 102. The transparent buckle 8 rotates about the end hinged to the bracket 102, which can cover or open the control button 701 and the digital display module 702. Rotating the transparent buckle 8 can cover the control button 701 and the digital display module 702 for protection and to prevent dust from entering. When it is necessary to operate the button or install the optical fiber, the transparent buckle 8 can be opened, which is very convenient.

[0035] The working principle of this utility model is as follows: Open the transparent buckle 8, insert the optical fiber into the first hole 1011 and the second hole 1012. The first hole 1011 and the second hole 1012 correspond to the holes formed by the two fixed clamps 42 and the movable clamp 43, respectively. After the optical fiber is inserted, first push the locking tongue plate 48 to move away from the locking groove 49, and then press the locking tongue plate 48 to drive the pressure plate 44 to move downward. After moving to the bottom (the movable clamp 43 and the fixed clamp 42 abut against each other), push the locking tongue plate 48 into the locking groove 49. The locking groove 49 restricts the locking tongue plate 48, preventing it from moving upward due to the force of the spring 46, thereby fixing the optical fiber. After fixing the optical fiber, adjust the parameters through the control button 701. After the adjustment is completed, close the transparent buckle 8. Control the transmitting element 301 and the receiving element 302 through the PCBA board 2 to convert the received optical signal from the optical fiber into an electrical signal for output, thus completing the detection.

[0036] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this disclosure, and are not intended to limit them. Although this disclosure has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this disclosure.

Claims

1. A high-precision intelligent digital fiber optic sensor, characterized in that, include: The housing has a PCBA board inside. The end of the housing has a first hole and a second hole. The circuit board integrates a transmitting element and a receiving element. The positions of the transmitting element and the receiving element correspond to the first hole and the second hole. The housing is provided with an optical fiber fastener between the first hole, the second hole, and the transmitting element and the receiving element. The optical fiber fastener includes two fixed clamps, two movable clamps, and a driving assembly. The driving assembly is used to drive the two movable clamps to move closer to or away from the fixed clamps.

2. The high-precision intelligent digital fiber optic sensor according to claim 1, characterized in that, The optical fiber fastener includes a guide member, with guide grooves on both sides inside the guide member. The fixed clamping plates are fixedly connected to the guide grooves, and the two sides of the movable clamping plate are movably connected to the guide grooves. A circular hole is formed between the movable clamping plate and the fixed clamping plate for fixing the optical fiber.

3. A high-precision intelligent digital fiber optic sensor according to claim 2, characterized in that, The drive assembly includes a pressure plate and guide rods. There are two guide rods respectively disposed on both sides of the bottom of the pressure plate. The two guide rods pass through both sides of the movable clamping plate and the fixed clamping plate. The guide rods and the movable clamping plate are fixedly connected. Multiple springs are sleeved on the guide rods, and the two ends of the multiple springs are respectively abutted against the fixed clamping plate and the movable clamping plate.

4. A high-precision intelligent digital fiber optic sensor according to claim 3, characterized in that, The surface of the pressure plate is provided with a transverse guide rail, and a locking tongue plate is movably connected to the transverse guide rail. The side of the guide member is provided with a locking groove, and the locking tongue plate can be embedded in the locking groove.

5. A high-precision intelligent digital fiber optic sensor according to claim 1, characterized in that, The outer sides of the transmitting and receiving elements are covered with light-shielding fixing parts, and the side of the transmitting and receiving elements near the PCBA board is provided with light-shielding rubber parts, which have holes that allow the pins of the transmitting and receiving elements to pass through.

6. A high-precision intelligent digital fiber optic sensor according to claim 5, characterized in that, The light-shielding fixing component has a bandpass filter located at the front end of the transmitting element and the receiving element.

7. A high-precision intelligent digital fiber optic sensor according to claim 1, characterized in that, The housing includes a bottom shell and a bracket. The bracket is fixedly connected to the upper part of the bottom shell. The bracket is equipped with control buttons and a digital display module, which are electrically connected to the PCBA board.

8. A high-precision intelligent digital fiber optic sensor according to claim 7, characterized in that, The end of the bracket is hinged with a transparent buckle, which rotates about the end that is hinged to the bracket, and can cover or open the control buttons and digital display module.

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