Reflection optical fiber patch cord with calibration function

Abstract

The utility model relates to the technical field of reflection optical fiber jumpers, and discloses a reflection optical fiber jumper with a calibration function, which comprises an optical fiber cable, a reflection probe is arranged at one side end part of the optical fiber cable, the reflection probe is used for detecting an object to be detected, and the other side end part of the optical fiber cable is arranged in a forked structure. A first detection end connector and a light source connector are arranged on the forked portion of the optical fiber cable, a first detection assembly is connected to the first detection end connector, an LED light source is connected to the light source connector, an auxiliary optical fiber is further arranged on the light source connector, and the end of one side of the auxiliary optical fiber is connected with the light source connector. A second detection end connector is arranged at the end part of the other side of the LED light source, a second detection assembly is connected to the second detection end connector, and the second detection assembly can detect the output power of the LED light source through the connection of the second detection end connector and the auxiliary optical fiber; the utility model has the advantages of improving the accuracy of the test result and reducing the requirement on the test condition.

Description

Technical Field

[0001] The utility model relates to a reflective fiber optic jumper with a calibration function, belonging to the technical field of reflective fiber optic jumpers. Background Art

[0002] The reflection of light refers to the phenomenon that when light propagates to different substances, it changes its propagation direction at the interface and returns to the original substance. According to the principle of light reflection, a reflective fiber optic jumper can be made to realize the detection of certain specific data, such as the micro-vibration detection of an object, the thickness detection of a film layer, etc.

[0003] In the prior art, as Figure 1 shown, a common fiber optic jumper includes a fiber optic cable. A reflection probe is arranged at one end of the fiber optic cable, and the other end is arranged in a bifurcated structure. A detection end joint and a light source joint are respectively arranged on the bifurcated part. The reflection probe is used to detect the object to be measured. The detection end joint is used to connect with the detection component, and the light source joint is used to connect with the LED light source. During use, the reflection probe is placed close to and perpendicular to the object to be measured. Then the LED light source is started. After passing through the light, when the object to be measured generates micro-vibrations, the distance from it to the reflection probe will change, which will affect the light intensity of the reflected light received by the reflection probe. The relationship between the received reflected light intensity and the detection distance is as Figure 2 shown. By using the two linear regions of the rising section and the falling section, the displacement generated by the micro-vibration of the object to be measured can be determined according to the reflected light intensity, so as to realize the microscopic mechanical analysis or material fatigue test of the object to be measured. However, the reflected light intensity received by the detection component is an actual value, and using the absolute value for numerical calculation will be affected by many factors. For example, when the output power of the LED light source changes, the change in the emitted light intensity will affect the reflected light intensity received by the detection component. In this way, the consistency of the light source output must be ensured during the test to achieve a constant test standard, which adds many obstacles to the test process and the internal algorithm. Summary of the Utility Model

[0004] In order to solve the above problems existing in the prior art, the utility model provides a reflective fiber optic jumper with a calibration function.

[0005] The technical solution of the utility model is as follows:

[0006] A reflective fiber optic jumper with a calibration function, comprising an optical fiber line. A reflective probe is provided at one end of the optical fiber line, and the reflective probe is used to detect the object to be measured. The other end of the optical fiber line is provided with a bifurcated structure. A first detection end joint and a light source joint are respectively provided on the bifurcated part of the optical fiber line. A first detection component is connected to the first detection end joint, and an LED light source is connected to the light source joint. An auxiliary optical fiber is also provided on the light source joint. One end of the auxiliary optical fiber is connected to the light source joint, and a second detection end joint is provided at the other end. A second detection component is connected to the second detection end joint. The second detection component can detect the output power of the LED light source through the connection of the second detection end joint and the auxiliary optical fiber.

[0007] Wherein, a controller is electrically connected to both the first detection component and the second detection component. The controller is used to read the values detected by the first detection component and the second detection component and calculate the ratio between the two.

[0008] Wherein, both the first detection component and the second detection component are photomultiplier tubes.

[0009] Wherein, the optical fiber line includes 6 reflective optical fibers distributed in a hexagonal shape and 1 light source optical fiber. The two ends of the reflective optical fiber are respectively connected to the reflective probe and the first detection end joint, and the two ends of the light source optical fiber are respectively connected to the reflective probe and the light source joint.

[0010] Wherein, the auxiliary optical fiber is an optical fiber with the same model as the light source optical fiber.

[0011] The utility model has the following beneficial effects:

[0012] In the utility model, by adding an auxiliary optical fiber to the light source joint and cooperating with the second detection end joint and the second detection component, the second detection component can detect the output power of the LED light source through the connection of the second detection end joint and the auxiliary optical fiber. At the same time, by setting a controller, the controller reads the values detected by the first detection component and the second detection component and calculates the ratio between the two. The value detected by the first detection component is the reflected light intensity, and the value detected by the second detection component is the emitted light intensity. The ratio between the two is the relative light intensity. By using the relative light intensity instead of the absolute light intensity for numerical calculation, the calculation method of judging how much displacement the object to be measured generates according to the light intensity value is replaced by the calculation method of judging how much displacement the object to be measured generates according to the light intensity ratio. Combining with the second detection component can calibrate the emitted light intensity reference in real time, so as to avoid the influence of the change of the output power of the LED light source on the test and reduce the test condition requirements. Compared with the prior art, it has the advantages of improving the accuracy of the test results and reducing the test condition requirements. Description of the Drawings

[0013] Figure 1 Schematic structural diagram of a reflective fiber optic jumper in the prior art;

[0014] Figure 2 Graph showing the relationship between the intensity of the reflected light received by a reflective fiber optic jumper in the prior art and the detection distance;

[0015] Figure 3 Schematic structural diagram of the present utility model;

[0016] Figure 4 Schematic structural diagram of the reflection probe in this embodiment;

[0017] Figure 5 Schematic structural diagram of the first detection end joint in this embodiment;

[0018] Figure 6 Schematic structural diagram of the light source joint in this embodiment;

[0019] Figure 7 Schematic structural diagram of the second detection end joint in this embodiment.

[0020] In the figure, the reference numerals are represented as:

[0021] 1, optical fiber line; 2, reflection probe; 3, object to be measured; 4, first detection end joint; 5, light source joint; 6, first detection component; 7, LED light source; 8, auxiliary optical fiber; 9, second detection end joint; 10, second detection component; 11, controller. Specific embodiments

[0022] The present utility model will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0023] Embodiment: Please refer to Figure 3 , this embodiment provides a reflective fiber optic jumper with a calibration function, including an optical fiber line 1. In this embodiment, the optical fiber line 1 includes 6 reflective optical fibers and 1 light source optical fiber distributed in a hexagonal pattern. One end of the 6 reflective optical fibers and 1 light source optical fiber is bundled and connected to a reflection probe 2, and the reflection probe 2 is used to detect the object to be measured 3. The other end of the 6 reflective optical fibers is connected to a first detection end joint 4, and a first detection component 6 is connected to the first detection end joint 4. The other end of the 1 light source optical fiber is connected to a light source joint 5, and an LED light source 7 is connected to the light source joint 5. An auxiliary optical fiber 8 is also provided on the light source joint 5. One end of the auxiliary optical fiber 8 is connected to the light source joint 5, and the other end is provided with a second detection end joint 9. A second detection component 10 is connected to the second detection end joint 9, and the second detection component 10 can detect the output power of the LED light source 7 through the connection of the second detection end joint 9 and the auxiliary optical fiber 8.

[0024] The object under test 3, the first detection component 6, the LED light source 7, and the second detection component 10 are provided with connectors that match the reflection probe 2, the first detection end connector 4, the light source connector 5, and the second detection end connector 9, so as to be able to connect with the reflection probe 2, the first detection end connector 4, the light source connector 5, and the second detection end connector 9.

[0025] In this embodiment, to ensure the accuracy of the detection result, the auxiliary optical fiber 8 is an optical fiber with the same model as the light source optical fiber in the optical fiber line 1, so as to ensure that the light intensity emitted by the LED light source 7 through the auxiliary optical fiber 8 is the same as the light intensity emitted by the LED light source 7 through the light source optical fiber, thereby ensuring the accuracy of the value detected by the second detection component 10.

[0026] In this embodiment, both the first detection component 6 and the second detection component 10 are photomultiplier tubes commonly used in the prior art.

[0027] In this embodiment, a controller 11 is also electrically connected to both the first detection component 6 and the second detection component 10. The controller 11 is used to read the values detected by the first detection component 6 and the second detection component 10 and calculate the ratio between the two. The controller 11 can be a single-chip microcomputer commonly used in the prior art.

[0028] The working principle of the present utility model is as follows. When conducting a test, first place the reflection probe 2 close to and perpendicular to the object to be measured 3. Then start the LED light source 7. The LED light source 7 outputs light to the object to be measured 3 through the light source optical fiber and the reflection probe 2. At the same time, the LED light source 7 outputs light to the second detection end connector 9 through the auxiliary optical fiber 8. Connect the second detection end connector 9 to the second detection component 10, so that the second detection component 10 can detect the light intensity output by the LED light source 7. At this time, the value detected by the second detection component 10 is the emitted light intensity. When the object to be measured 3 generates micro-vibrations, the distance between it and the reflection probe 2 will change, which will affect the light intensity of the reflected light received by the reflection probe 2. The light intensity of the reflected light received by the reflection probe 2 is output to the first detection end connector 4 through 6 reflection optical fibers. Connect the first detection end connector 4 to the first detection component 6, so that the first detection component 6 can detect the light intensity of the reflected light. At this time, the value detected by the first detection component 6 is the reflected light intensity. Then, the controller 11 reads the values detected by the first detection component 6 and the second detection component 10 and calculates the ratio of the two. The ratio of the two is the relative light intensity. Under the condition that other test conditions remain unchanged, the reflected light intensity changes with the emitted light intensity, and the two are positively correlated. By using the relative light intensity instead of the absolute light intensity for numerical calculation, the calculation method of judging how much displacement the object to be measured 3 generates based on the light intensity value is replaced with the calculation method of judging how much displacement the object to be measured 3 generates based on the light intensity ratio. Combining with the fact that the second detection component 10 can calibrate the emitted light intensity reference in real time, it can well avoid the influence of the change in the output power of the LED light source 7 on the test and can reduce the requirements for test conditions.

[0029] The above are only the embodiments of the present utility model, and do not limit the patent scope of the present utility model accordingly. All equivalent structural or equivalent process transformations made by using the content of the specification and drawings of the present utility model, or directly or indirectly applied in other related technical fields, are similarly included in the patent protection scope of the present utility model.

Claims

1. A reflective optical fiber jumper with a calibration function, comprising an optical fiber line (1), a reflection probe (2) being arranged on one end of the optical fiber line (1), the reflection probe (2) being used to detect a measured object (3), the other end of the optical fiber line (1) being arranged in a bifurcated structure, a first detection end connector (4) and a light source connector (5) being arranged on the bifurcated portion of the optical fiber line (1), the first detection end connector (4) being connected to a first detection component (6), and the light source connector (5) being connected to an LED light source (7), characterized in that: The light source connector (5) is also provided with an auxiliary optical fiber (8), one end of the auxiliary optical fiber (8) is connected to the light source connector (5), and the other end is provided with a second detection end connector (9), the second detection end connector (9) is connected to a second detection component (10), and the second detection component (10) is capable of detecting the output power of the LED light source (7) through the connection between the second detection end connector (9) and the auxiliary optical fiber (8).

2. A reflective optical fiber patch cord with calibration function according to claim 1, characterized in that: The first detection component (6) and the second detection component (10) are both electrically connected to a controller (11), and the controller (11) is used to read the values ​​detected by the first detection component (6) and the second detection component (10) and calculate the ratio between the two.

3. The reflective optical fiber jumper with calibration function according to claim 1, characterized in that: The first detection component (6) and the second detection component (10) are both photomultiplier tubes.

4. The reflective optical fiber jumper with calibration function according to claim 1, characterized in that: The optical fiber line (1) comprises six reflection optical fibers and one light source optical fiber distributed in a hexagonal shape, wherein two ends of the reflection optical fiber are respectively connected to the reflection probe (2) and the first detection end connector (4), and two ends of the light source optical fiber are respectively connected to the reflection probe (2) and the light source connector (5).

5. The reflective optical fiber jumper with calibration function according to claim 4, characterized in that: The auxiliary optical fiber (8) is an optical fiber of the same model as the optical fiber of the light source.

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