Coupling type fiber cloth optical signal automatic acquisition device and acquisition method

Abstract

The invention discloses a coupling type fiber cloth optical signal automatic acquisition device and acquisition method, and belongs to the technical field of fiber cloth optical signal automatic acquisition, the coupling type fiber cloth optical signal automatic acquisition device comprises an outer frame body, an integrated host is installed in the outer frame body, and the integrated host moves back and forth in the outer frame body under the driving of a back and forth driving device; a circular groove is formed in the front side of the integrated host, a rotary bearing disc is mounted in the circular groove, and fiber cloth to be detected is mounted on the rotary bearing disc of the rotary driving device; and a laser probe is fixedly arranged right above the circular groove. According to the invention, the requirement of scanning a complex track on the surface of the fiber cloth can be met; repeated manual adjustment of the angle and the position of the fiber cloth in the collection process is omitted, automatic collection is achieved, and the detection efficiency is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to a kind of coupling type fiber cloth optical signal automatic acquisition device and acquisition method, belong to fiber cloth optical signal automatic acquisition technical field. BACKGROUND

[0002] With the rapid development of intelligent manufacturing, industrial detection and composite material quality control technology, spectral detection has significant advantages in material analysis, biomedical, environmental monitoring and other fields, especially in fiber cloth optical signal detection, showing unique technical value.Spectral detection technology is currently an effective means for monitoring stress, temperature, displacement and other physical quantities of materials or composite products with spectral activity during the manufacturing process.For example: if bullet impact to bulletproof fiber fabric, how stress is released, along what route.Will be found out by spectral detection, stress release path on fiber cloth during bullet impact, according to stress release path, the structure of fiber fabric can be reprogrammed, so that energy is released more quickly, and better bulletproof effect is achieved.

[0003] However, in practical application, the traditional spectral signal acquisition system has the following deficiencies in signal acquisition: the spectral signal acquisition device in the prior art is generally fixed or linearly translated, that is, it locally scans a certain point or a straight line position of the sample.For complex samples (such as flexible samples of irregular fiber cloth), it is impossible to obtain comprehensive scanning and detection at multiple angles;Moreover, when detecting fiber cloth at different angles and positions, the sample material needs to be moved and adjusted constantly, which requires a lot of manpower, and it is also impossible to accurately and uniformly select detection points.

[0004] As can be seen from the above, the prior art obviously has inconvenience and defects in actual use, so it is necessary to improve. SUMMARY

[0005] The present application provides a kind of coupling type fiber cloth optical signal automatic acquisition device and acquisition method to solve the problems in the background art, which can meet the scanning needs of complex trajectories on the surface of fiber cloth, and eliminates the need for repeated manual adjustment of the angle and position of the fiber cloth during the acquisition process, achieving automated acquisition and improving detection efficiency.

[0006] To solve the above technical problems, the present application adopts the following technical solutions: A kind of coupling type fiber cloth optical signal automatic acquisition device, comprising an outer frame, an integrated host is installed in the outer frame, and the integrated host moves forward and backward under the drive of front and rear drive devices in the outer frame; A circular groove is provided on the front side of the integrated host, and a rotating bearing disc is installed in the circular groove, and the rotating bearing disc is installed with the fiber cloth to be detected on the rotating bearing disc of the rotating drive device; A laser probe is fixed above the circular groove.

[0007] Further, the lower end of the circular groove is provided with an extension cylinder, the lower end of the rotating bearing disc extends to form a sleeve, and the outer side of the sleeve is rotatably installed inside the extension cylinder through a bearing. The sleeve is provided with an inner hole with internal threads, the inner hole of the sleeve penetrates the central axis of the rotating bearing disc, a lifting shaft is rotatably installed in the inner hole of the sleeve, the outer side of the upper half of the lifting shaft is provided with external threads, the lifting shaft is threadedly connected with the sleeve, and the top of the lifting shaft is provided with a lifting bullet.

[0008] Further, a circular annular compression ring is installed above the rotating bearing disc through a screw, and a circle of the fiber cloth to be detected is fixed on the rotating bearing disc through the compression ring.

[0009] Further, a cantilever is fixedly installed above the integrated host, an optical fiber is arranged along the length direction of the cantilever, the laser probe is installed at the front end of the cantilever, and the laser probe is connected with the optical fiber.

[0010] Further, the lower end of the integrated host is provided with a motor mounting seat, the rotating driving device includes a first driving motor, the first driving motor is installed in the motor mounting seat, a first transmission gear is installed on the rotating shaft of the first driving motor, the outer ring of the rotating bearing disc is provided with a transmission tooth, and the first transmission gear is arranged at the edge of the rotating bearing disc and is in meshing transmission with the rotating bearing disc.

[0011] Further, the front-rear driving device includes a second driving motor, the second driving motor is fixedly installed on the inner side of the outer frame body through a mounting support, a second transmission gear is installed on the rotating shaft of the second driving motor, and a rack is horizontally arranged in the rear end of the integrated host and in meshing transmission with the second transmission gear. Opposite two side walls in the outer frame body are respectively provided with guide sliding rails, and the two sides of the integrated host are respectively provided with guide sliding blocks, the guide sliding blocks are slidingly arranged on the guide sliding rails, so that the integrated host is horizontally and movably installed on the inner side of the outer frame body.

[0012] Further, the bottom of the outer frame body is provided with a driver for controlling the first driving motor and the second driving motor, and the first driving motor and the second driving motor are selected from synchronous motors.

[0013] A coupling type fiber cloth optical signal automatic acquisition method, comprising the following steps: S1, fixing and pretreating the fiber cloth; clamping the fiber cloth on the upper surface of the rotating bearing disc, and rotating the lifting shaft to lift the fiber cloth; S2, setting scanning parameters; setting the motion track of rotating + linear coupling, and setting the acquisition accuracy parameters; S3, optical signal acquisition: start the laser probe to collect data, process the data and generate a spectrum.

[0014] Furthermore, in step S2, the acquisition accuracy parameters include: Fiber cloth radius: R; Circumferential node spacing: Δra, the distance moved along the acquisition radius r each time; Radial node spacing: Δrb, the distance of linear movement along the radial direction toward the center of the circle each time; Acquisition frequency: f, the number of acquisitions per second by the laser probe; Based on the acquisition accuracy parameters, the control principles of rotation + linear coupling motion include: 1. Calculation of angular velocity ω of rotational motion The number of collection points per circle N is determined by the circumferential node spacing Δra and the real-time collection radius r: N=2πr / Δra, To ensure uniform distribution of nodes, the angular velocity of rotation ω needs to match the acquisition frequency f: ω=2πf / N=f⋅Δra / r; 2. Calculation of linear motion velocity v After each round of collection, it takes time T. Then v=Δrb / T, Where, T = 2π / ω = 2πr / f⋅Δra, From the above, we can obtain that v=Δrb⋅f⋅Δra / 2πr=f⋅Δrb⋅Δra / 2πr.

[0015] Furthermore, it is set that Δra=Δrb.

[0016] After adopting the above technical solution, the present invention has the following advantages compared with the prior art: The fiber cloth rotates on the rotating carrier plate and can also move linearly with the rotating carrier plate, realizing double-degree-of-freedom coupled motion, enabling comprehensive detection of the fiber cloth surface, and meeting the needs of scanning complex trajectories on the fiber cloth surface; eliminating the need for repeated manual adjustment of the fiber cloth angle and position during the acquisition process, realizing automated acquisition, improving detection efficiency, and saving manpower.

[0017] The lifting shaft is raised relative to the rotating carrier plate and the sleeve, so that the lifting bullet lifts the middle of the fiber cloth to be tested, preventing the fiber cloth from displacement and relaxation during the testing process, so that the fiber cloth tow is in a balanced force state, and the collected data is more accurate and reliable. At the same time, the lifting shaft is rotated to change the lifting height of the fiber cloth, so that data can be collected on the tested fiber cloth tow under different force sizes, thereby performing more comprehensive data collection and analysis on the fiber cloth.

[0018] Based on setting the collection precision parameter, the node spacing in the circumferential and radial directions on the fiber cloth is equal in the rotation+linear coupling movement process, so that all the collection nodes are uniformly distributed, and full-automatic and high-resolution scanning detection of the optical signal on the fiber cloth surface is realized.

[0019] The application will be described in detail below with reference to the drawings and embodiments. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 is a schematic diagram of the three-dimensional structure of the first angle of the application; Figure 2 is a schematic diagram of the three-dimensional structure of the first angle of the application; Figure 3 is a schematic diagram of the three-dimensional structure of the internal structure of the application; Figure 4 is a schematic diagram of the three-dimensional structure of the internal structure of the application; Figure 5 is a schematic diagram of the structure of the rotating bearing disc and the lifting shaft in the application; Figure 6 is a schematic diagram of the structure of the integrated main machine in the application; Figure 7 is a flowchart of the automatic fiber cloth optical signal collection method.

[0021] In the drawings, 1-outer frame, 2-integrated main machine, 201-circular groove, 202-motor mounting seat, 203-extended cylinder, 3-lifting shaft, 301-lifting bullet, 302-rotary handle, 4-rotating bearing disc, 5-pressing ring, 6-sleeve, 7-fiber cloth, 8-first drive motor, 9-first transmission gear, 10-second drive motor, 11-second transmission gear, 12-rack, 13-guiding slide rail, 14-cantilever, 15-optical fiber, 16-laser probe, 17-driver. DETAILED DESCRIPTION

[0022] In order to have a clearer understanding of the technical features, objectives and effects of the application, the specific embodiments of the application will be described with reference to the drawings.

[0023] As Figures 1 to 4 shown, the application provides a coupled fiber cloth optical signal automatic collection device, which comprises an outer frame 1, and an integrated main machine 2 is installed inside the outer frame 1, and the integrated main machine 2 moves forward and backward under the driving of the forward and backward driving devices inside the outer frame 1. The front side of the integrated main machine 2 is provided with a circular groove 201, and a rotating bearing disc 4 is installed in the circular groove 201, and the fiber cloth 7 to be detected is installed on the rotating bearing disc 4 under the rotation of the rotating driving device. A laser probe 16 is fixed above the circular groove 201.

[0024] The fiber cloth 7 rotates on the rotating bearing disc 4 and can move linearly with the rotating bearing disc 4, thereby realizing double-degree-of-freedom coupling motion and breaking the limitation of single translation or rotation. The fiber cloth 7 can be fully detected, and the scanning demand of the fiber cloth surface along a complex track (such as an Archimedes spiral) can be met. The angle and position of the fiber cloth 7 are automatically adjusted during the collection process, and the automatic collection is realized, thereby effectively improving the detection efficiency and reducing the degree of manual participation.

[0025] A cantilever 14 is fixed above the integrated main machine 2, and an optical fiber 15 is arranged along the length direction of the cantilever 14. The laser probe 16 is arranged at the front end of the cantilever 14 and is connected with the optical fiber 15.

[0026] The lower end of the circular groove 201 is provided with an extension cylinder 203, the lower end of the rotating bearing disc 4 is extended to form a sleeve 6, and the outer side of the sleeve 6 is rotatably arranged in the extension cylinder 203 through a bearing (not shown in the figure).

[0027] A circular annular pressing ring 5 is arranged above the rotating bearing disc 4 through a screw, and one turn of the fiber cloth 7 to be detected is fixed on the rotating bearing disc 4 through the pressing ring 5.

[0028] As shown in Figure 5 , the sleeve 6 is provided with an inner hole with an internal thread, the inner hole of the sleeve 6 penetrates the central axis of the rotating bearing disc 4, a lifting shaft 3 is rotatably arranged in the inner hole of the sleeve 6, the outer side of the upper half of the lifting shaft 3 is provided with an external thread, the lifting shaft 3 is threadedly connected with the sleeve 6, and the top of the lifting shaft 3 is provided with a top-up spring 301, and the lower end of the lifting shaft 3 is provided with a rotating handle 302.

[0029] After the fiber cloth 7 to be detected is fixed on the rotating bearing disc 4, the rotating handle 302 is rotated to make the lifting shaft 3 ascend relative to the rotating bearing disc 4 and the sleeve 6, so that the top-up spring 301 lifts the middle of the fiber cloth 7 to be detected, and the fiber cloth 7 is in a taut state, thereby preventing the fiber cloth 7 from being displaced and relaxed during the detection process. The middle of the fiber cloth 7 is lifted by about 3-8 mm relative to the edges, and the height difference between the middle and the edges is within the effective focal length range of the laser probe 16 when collecting signals, and does not affect the collection effect. This fixing mode can conveniently fix the fiber cloth 7 in a taut state and make the fiber bundle of the fiber cloth in a balanced force state, so that the collected data is more accurate and reliable. Meanwhile, the lifting shaft 3 is rotated to change the lifting height of the fiber cloth 7, so that the data of the fiber cloth 7 under different stress sizes can be collected, thereby realizing more comprehensive data collection and analysis of the fiber cloth 7.

[0030] The lower end of the integrated host 2 is provided with a motor mounting seat 202, the rotating driving device comprises a first driving motor 8, the first driving motor 8 is installed in the motor mounting seat 202, a first transmission gear 9 is installed on the rotating shaft of the first driving motor 8, the outer ring of the rotating bearing disc 4 is provided with a transmission tooth, and the first transmission gear 9 is arranged on the edge of the rotating bearing disc 4 and is in meshing transmission with the rotating bearing disc 4.

[0031] The front and rear driving devices comprise a second driving motor 10, the second driving motor 10 is fixedly installed on the inner side of the outer frame body 1 through a mounting support (not shown in the figure), a second transmission gear 11 is installed on the rotating shaft of the second driving motor 10, and the inside of the rear end of the integrated host 2 is horizontally provided with a rack 12, as Figure 6 The rack 12 is in meshing transmission with the second transmission gear 11; the opposite two side walls in the outer frame body 1 are respectively provided with guide sliding rails 13, and the two sides of the integrated host 2 are respectively provided with guide sliding blocks (not shown in the figure), the guide sliding blocks are slidingly arranged on the guide sliding rails 13, so that the integrated host 2 is movably installed on the inner side of the outer frame body 1.

[0032] The bottom of the outer frame body 1 is provided with a driver 17 for controlling the first driving motor 8 and the second driving motor 10, the driver 17 supports self-defined programming detection paths, the driver 17 supports self-defined programming detection paths, can significantly shorten the detection time and reduce repeated operations. The first driving motor 8 and the second driving motor 10 are selected from synchronous motors, and the rotating motion (θ axis) and linear translation (X / Y axis) of the fiber cloth are realized through the cooperative driving of the double-step motors, so that the motion speed of the rotating bearing disc 4 can be more accurately controlled, the scanning of complex trajectories is supported, the positioning of μm level is realized, and combined with a high-precision optical probe, the full-automatic and high-resolution scanning detection of the optical signals (such as Raman spectrum, fluorescence, etc.) on the surface of the fiber cloth is completed.

[0033] The application also provides a coupling type fiber cloth optical signal automatic acquisition method, as Figure 7 The method comprises the following steps: S1, fixing and pretreating the fiber cloth 7; the fiber cloth 7 is clamped on the upper surface of the rotating bearing disc 4, the fiber cloth is lifted by rotating the lifting shaft 3; the upper surface of the fiber cloth 7 forms a detection surface, the height of the lifting shaft 3 is adjusted, and the pre-tension received by the fiber cloth bundle is adjusted.

[0034] S2, setting scanning parameters; setting the motion trajectory of rotating + linear coupling, and setting the acquisition accuracy parameters; S3, optical signal acquisition; starting the laser probe 16 (preferably a Raman spectrum probe) to acquire data, processing the data and generating a spectrum; In step S2, the collection precision parameters include: fiber cloth radius: R, initially, the real-time collection radius r starts from the maximum radius R, and in the collection process, the value of the real-time collection radius r decreases from R to 0 as the integrated host 2 moves backward; Circumferential node spacing: Δra, distance moved each time along the collection radius r; Radial node spacing: Δrb, distance moved each time along a straight line; Collection frequency: f, number of times of collection per second of the laser probe 16; Based on the collection precision parameters, the control principle of the rotary + linear coupled motion is: 1. Calculation of the rotary motion angular velocity ω The number of collection points N per circle is determined by the circumferential node spacing Δraand the real-time collection radius r: N = 2πr / Δra, To ensure uniform distribution of the nodes, the rotary motion angular velocity ω needs to be matched with the collection frequency f: ω = 2πf / N = f·Δra / r, Physical meaning: the smaller the real-time collection radius r, the faster the rotary speed needs to be, so as to maintain the same circumferential node spacing Δra, thereby ensuring that the collection node spacing per circle is equal in the case of different real-time collection radii r.

[0035] 2. Calculation of the linear motion speed v After each collection circle is completed, time T is consumed to move Δrb(radial node spacing) in the radial direction towards the center: v = Δrb / T, Wherein, T = 2π / ω = 2πr / f·Δra, From the above, v = Δrb·f·Δra / 2πr = f·Δrb·Δra / 2πr.

[0036] In the preferred embodiment, Δra= Δrbis set, so that the node spacing in the circumferential and radial directions on the fiber cloth is equal, so that all the collection nodes are uniformly distributed. Thus, full-automatic, high-resolution scanning detection of the optical signal on the surface of the fiber cloth is realized.

[0037] In the setting process of the collection precision parameters, it is necessary to ensure that the minimum step angle of the stepper motor meets the resolution requirement of ω; at the same time, the response time of the laser probe 16 is considered to avoid signal loss caused by too fast motion speed.

[0038] The above describes an example of the best embodiment of the present application, wherein parts not described in detail are common knowledge of ordinary skilled persons in the art. The protection scope of the present application is subject to the content of the claims, and any equivalent transformation based on the technical inspiration of the present application is also within the protection scope of the present application.

Claims

1. A coupled fiber optic cable automatic acquisition device, characterized by: Including the outer frame (1), the outer frame (1) is internally mounted with integrated host (2), integrated host (2) inside the outer frame (1) is driven by the front and rear drive device to move forward and backward; The front side of the integrated host (2) is provided with a circular groove (201), and the circular groove (201) is internally mounted with a rotating bearing disc (4). The rotating bearing disc (4) is internally mounted with a fiber cloth (7) to be detected on the rotating bearing disc (4) of the rotating drive device. A laser probe (16) is fixedly arranged above the circular groove (201).

2. The coupled fiber optic signal automatic collection apparatus of claim 1, wherein: The lower end of the circular groove (201) is provided with an extension cylinder (203), the lower end of the rotating bearing disc (4) is extended to form a sleeve (6), and the outer side of the sleeve (6) is rotatably arranged in the extension cylinder (203); The sleeve (6) is provided with an inner hole with internal threads, the inner hole of the sleeve (6) penetrates the central axis of the rotating bearing disc (4), and a lifting shaft (3) is rotatably arranged in the inner hole of the sleeve (6). The outer side of the upper half of the lifting shaft (3) is provided with external threads, the lifting shaft (3) is threadedly connected with the sleeve (6), and the top of the lifting shaft (3) is provided with a lifting bullet (301). The lower end of the lifting shaft (3) is provided with a rotating handle (302).

3. The coupled fiber optic signal automatic acquisition device of claim 1, wherein: The upper side of the rotating bearing disc (4) is provided with a circular annular compression ring (5) through a screw, and a fiber cloth (7) to be detected is fixed on the rotating bearing disc (4) through the compression ring (5).

4. The coupled fiber optic signal automatic collection apparatus of claim 1, wherein: A cantilever (14) is fixedly arranged above the integrated host (2), an optical fiber (15) is arranged along the length direction of the cantilever (14), the laser probe (16) is arranged at the front end of the cantilever (14), and the laser probe (16) is connected with the optical fiber (15).

5. The coupled fiber optic signal automatic collection apparatus of claim 1, wherein: The lower end of the integrated host (2) is provided with a motor mounting seat (202), the rotating drive device comprises a first drive motor (8), the first drive motor (8) is arranged in the motor mounting seat (202), a first transmission gear (9) is arranged on the rotating shaft of the first drive motor (8), the outer ring of the rotating bearing disc (4) is provided with a transmission tooth, and the first transmission gear (9) is arranged on the edge of the rotating bearing disc (4) and is in meshing transmission with the rotating bearing disc (4).

6. The coupled fiber optic signal automatic collection apparatus of claim 5, wherein: The front and rear drive device comprises a second drive motor (10), the second drive motor (10) is fixedly arranged on the inner side of the outer frame (1) through a mounting support, a second transmission gear (11) is arranged on the rotating shaft of the second drive motor (10), and a rack (12) is horizontally arranged in the inner side of the rear end of the integrated host (2). The rack (12) is in meshing transmission with the second transmission gear (11). Opposite two side walls in the outer frame (1) are respectively provided with guide rails (13), and the two sides of the integrated host (2) are respectively provided with guide blocks which are slidably arranged on the guide rails (13), so that the integrated host (2) is horizontally movably arranged on the inner side of the outer frame (1).

7. The coupled fiber optic signal automatic collection apparatus of claim 6, wherein: The bottom of the outer frame (1) is provided with a driver (17) for controlling the first drive motor (8) and the second drive motor (10), and the first drive motor (8) and the second drive motor (10) are selected from synchronous motors.

8. A method for automatic acquisition of coupled fiber optic signal, characterized in that: The acquisition method is based on the coupling type fiber cloth optical signal automatic acquisition device according to any one of claims 1-7, comprising the following steps: S1, fixing and pretreating the fiber cloth (7); clamping the fiber cloth (7) on the upper surface of the rotating bearing disc (4), and rotating the lifting shaft (3) to lift the fiber cloth; S2, setting scanning parameters; setting the rotating + linear coupling motion track, and setting the acquisition accuracy parameters; S3, optical signal acquisition; starting the laser probe (16) to collect data, processing the data and generating a map.

9. The coupling type fiber cloth optical signal automatic acquisition method according to claim 8, characterized in that: In step S2, the acquisition accuracy parameters include: Fiber cloth radius: R; Circumferential node spacing: Δra, the distance moved each time along the collection radius r; Radial node spacing: Δrb, the distance moved each time along the radial direction to the center direction; Collection frequency: f, the number of times of collection per second of the laser probe (16); Based on the acquisition accuracy parameters, the control principle of the rotating + linear coupling motion includes:

1. Calculation of the rotating motion angular velocity ω The number of collection points N per circle is determined by the circumferential node spacing Δra and the real-time collection radius r: N = 2πr / Δra, To ensure uniform distribution of nodes, the rotating motion angular velocity ω needs to be matched with the collection frequency f: ω = 2πf / N = f⋅Δra / r; 2. Calculation of the linear motion velocity v After collecting one circle, the time consumption T is: v = Δrb / T, Wherein, T = 2π / ω = 2πr / f⋅Δra, From the above, v = Δrb⋅f⋅Δra / 2πr = f⋅Δrb⋅Δra / 2πr.

10. The method for automatically collecting optical signals from a coupled fiber cloth according to claim 9, wherein: Set Δra = Δrb.

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