Cable detection device

Abstract

The invention relates to the technical field of cable detection, and discloses a cable detection device, which comprises a shell provided with a first detection groove for a cable to pass through in a suspended manner, and the bottom surface of the first detection groove is a semicircular reflecting surface; the center line of the semicircular reflecting surface is higher than the center line of the cable passing through the first detection groove; the first detection camera is arranged on the notch side of the first detection groove and located over the cable; the bottom surface image and at least part of the side surface image of the cable are reflected to the first detection camera through the semicircular reflecting surface, and the first detection camera can directly photograph the top surface of the cable. According to the cable detection device, the size and the production cost can be further reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of cable detection, and in particular to a cable detection device. Background Art

[0002] At present, machine vision inspection and maintenance are gradually being adopted for some cables, cables, and cables used for lifting, transportation, installation, and connection. In particular, some sightseeing cables and other cables used to transport personnel. During the long-term transportation process, the cables will have quality defects such as wear and damage, which will directly affect the life safety of the transported personnel.

[0003] Chinese patent CN210690440U discloses a cable visual inspection module, which detects the cables passing through the support mechanism through three cameras arranged in a circular array on the support mechanism, and a light source surrounds the cable 360°, the light source is used to illuminate the cable in the support mechanism, and the camera takes pictures of the cable that continuously slides in the support mechanism. The cable visual inspection module in the prior art needs to be designed with at least three cameras, which results in a large overall size and high cost of the cable visual inspection module.

[0004] In view of this, it is necessary to design a cable detection device that can further reduce the volume and reduce the production cost.

[0005] The above information is presented as background information only to assist with understanding the present disclosure and no determination or admission is made as to whether any of the above may be used as prior art with respect to the present disclosure. Summary of the invention

[0006] The present invention provides a cable detection device, which can further reduce the volume and production cost.

[0007] To achieve the above object, the present invention provides the following technical solutions:

[0008] A cable detection device, comprising:

[0009] The housing is provided with a first detection slot for the cable to pass through in mid-air, the bottom surface of the first detection slot is a semicircular reflective surface; the center line of the semicircular reflective surface is higher than the center line of the cable passing through the first detection slot;

[0010] The first detection camera is arranged on the slot side of the first detection slot and is located directly above the cable; the bottom image and at least part of the side image of the cable are reflected to the first detection camera through the semicircular reflection surface, and the first detection camera can directly take a picture of the top surface of the cable.

[0011] Optionally, the housing is further provided with a second detection slot connected to the first detection slot;

[0012] The extension direction of the second detection slot is consistent with the extension direction of the first detection slot, the cross section of the second detection slot perpendicular to the extension direction of the second detection slot is a trapezoid, and the groove walls on two opposite sides of the second detection slot are inclined reflection surfaces, and the two inclined reflection surfaces are symmetrically arranged;

[0013] The cable detection device also includes a second detection camera, which is arranged on the slot side of the second detection slot and directly above the cable; the images on both sides of the cable are reflected to the second detection camera through the opposite side slot walls of the second detection slot.

[0014] Optionally, it further comprises a coaxial light source installed in the housing;

[0015] The coaxial light source comprises a beam splitter located on one side of the top of the first detection slot and a light emitting component installed on one side of the beam splitter; the light emitted by the light emitting component is emitted toward the first detection slot through the beam splitter.

[0016] Optionally, an amplifying lens is further provided on the top plate of the housing, and the amplifying lens is located between the beam splitter and the first detection camera.

[0017] Optionally, the radius of the semicircular reflecting surface is a, the diameter of the cable is b, and the minimum distance from the center line of the cable to the semicircular reflecting surface is c;

[0018] Among them, a≥3b, b≤c≤2b.

[0019] Optionally, the shell forms a detection hole for the cable to pass through, and the detection hole is connected to the first detection groove.

[0020] Optionally, a diffusion plate is further arranged between the light output assembly and the beam splitter.

[0021] Optionally, a diffuser lamp bead is also installed at the bottom of the first detection slot;

[0022] The diffuse lamp bead is located directly below the first detection slot, and the width of the lamp bead is smaller than the width of the cable.

[0023] Optionally, the center line of the semicircular reflective surface is located directly above the center line of the cable of the first detection slot.

[0024] Compared with the prior art, the present invention has the following beneficial effects:

[0025] The cable detection device provided by the present invention is provided with a first detection groove which is a semicircular reflective surface, so that the first detection camera on the top of the cable can directly take pictures of the top surface of the cable, and the first detection camera can take pictures of the bottom surface and part of the side surface of the cable through the semicircular reflective surface, so that the entire circumference of the cable can be completely detected. The cable detection device in this embodiment, through a clever structural design, can achieve the structure of detecting the entire periphery of the cable without setting up multiple detection cameras, effectively reducing the volume and reducing the production cost.

[0026] The present invention has other features and advantages, which will be apparent from or will be described in detail in the accompanying drawings and the following detailed description incorporated herein, which together serve to explain the specific principles of the invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0028] Figure 1 is a front view schematic diagram of a cable detection device provided by an embodiment of the present invention;

[0029] Figure 2 yes Figure 1 Schematic diagram of the structure of the A-A section;

[0030] Figure 3 This Figure 1 Schematic diagram of the structure of the middle BB section;

[0031] Figure 4 is a schematic diagram of the three-dimensional structure of a cable detection device provided by an embodiment of the present invention;

[0032] Figure 5 is a schematic diagram of the three-dimensional structure of another downward-looking cable detection device provided by an embodiment of the present invention;

[0033] Figure 6 It is a schematic diagram of the structure of the cable detection device provided by an embodiment of the present invention at the end portion on a hidden side;

[0034] Figure 7 It is a schematic diagram of the structure of the cable detection device provided by an embodiment of the present invention when the other end is hidden;

[0035] Figure 8It is a schematic diagram of the three-dimensional structure of the first detection slot and the second detection slot provided in an embodiment of the present invention.

[0036] Figure numerals: 100, cable; 1, shell; 11, first detection slot; 12, second detection slot; 13, detection hole; 14, diffuse lamp beads; 101, semicircular reflection surface; 2, first detection camera; 102, inclined reflection surface; 3, second detection camera; 4, coaxial light source; 41, spectrometer; 42, light output component; 43, amplification lens; 44, diffusion plate. DETAILED DESCRIPTION

[0037] In order to explain in detail the possible application scenarios, technical principles, specific schemes that can be implemented, and the purposes and effects that can be achieved, the following is a detailed description of the specific embodiments listed in conjunction with the accompanying drawings. The embodiments described herein are only used to more clearly illustrate the technical solutions of the present application, and are therefore only used as examples, and cannot be used to limit the scope of protection of the present application.

[0038] Reference to "embodiment" herein means that the specific features, structures or characteristics described in conjunction with the embodiment may be included in at least one embodiment of the present application. The term "embodiment" appearing in various places in the specification does not necessarily refer to the same embodiment, nor does it particularly limit its independence or association with other embodiments. In principle, in the present application, as long as there is no technical contradiction or conflict, the various technical features mentioned in the embodiments can be combined in any way to form a corresponding implementable technical solution.

[0039] Unless otherwise defined, the technical terms used in this document have the same meanings as those generally understood by those skilled in the art to which this application belongs; the use of relevant terms in this document is only for describing specific embodiments and is not intended to limit this application.

[0040] In the description of this application, the term "and / or" is an expression used to describe the logical relationship between objects, indicating that three relationships may exist, for example, A and / or B, which means: A exists, B exists, and A and B exist at the same time. In addition, the character " / " in this article generally indicates that the objects before and after are in an "or" logical relationship.

[0041] In the present application, terms such as “first” and “second” are merely used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship of quantity, priority or sequence between these entities or operations.

[0042] Without further limitations, in this application, the words "include", "comprises", "has" or other similar expressions used in the sentences are intended to cover non-exclusive inclusion. These expressions do not exclude the presence of additional elements in the process, method or product including the elements, so that the process, method or product including a series of elements may include not only those limited elements, but also other elements not explicitly listed, or also include elements inherent to such process, method or product.

[0043] Similar to the understanding in the Examination Guidelines, in this application, expressions such as "greater than", "less than", "exceed" and the like are understood to exclude the number itself; expressions such as "above", "below", "within" and the like are understood to include the number itself. In addition, in the description of the embodiments of this application, "multiple" means more than two (including two), and similar expressions related to "multiple" are also understood in this way, such as "multiple groups", "multiple times", etc., unless otherwise clearly and specifically limited.

[0044] In the description of the embodiments of the present application, space-related expressions used, such as "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "vertical", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicate the orientation or position relationship based on the orientation or position relationship shown in the specific embodiments or drawings, and are only for the convenience of describing the specific embodiments of the present application or facilitating the reader's understanding, and do not indicate or imply that the referred device or component must have a specific position, a specific orientation, or be constructed or operated in a specific orientation, and therefore cannot be understood as a limitation on the embodiments of the present application.

[0045] Unless otherwise expressly specified or limited, in the description of the embodiments of the present application, the terms such as "install", "connect", "connect", "fix", "set", etc. used should be understood in a broad sense. For example, the "connection" can be a fixed connection, a detachable connection, or an integrated setting; it can be a mechanical connection, an electrical connection, or a communication connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements. For technicians in the technical field to which the present application belongs, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0046] In view of the defects of the existing cable detection device, the applicant has actively conducted research and innovation based on many years of rich practical experience and professional knowledge in the design and manufacture of such products, and in conjunction with the application of theory, in the hope of creating a technology that can solve the defects in the existing technology and make the cable detection device more practical. After continuous research and design, and repeated trial production and improvement, the present invention with real practical value was finally created.

[0047] Please refer to Figures 1 to 8 , an embodiment of the present invention provides a cable detection device, comprising:

[0048] The shell 1 is provided with a first detection groove 11 for the cable 100 to pass through in mid-air, and the bottom surface of the first detection groove 11 is a semicircular reflecting surface 101; the center line of the semicircular reflecting surface 101 is higher than the center line of the cable 100 passing through the first detection groove 11, so that both ends of the semicircular reflecting surface 101 are higher than the center line of the cable 100.

[0049] The first detection camera 2 is arranged at the slot side of the first detection slot 11 and is located directly above the cable 100; the bottom image and at least part of the side image of the cable 100 are reflected to the first detection camera 2 through the semicircular reflection surface 101, and the first detection camera 2 can directly take a picture of the top surface of the cable 100. Optionally, as Figure 2 As shown, the center line of the semicircular reflective surface 101 is located directly above the center line of the cable 100 of the first detection slot 11 .

[0050] Specifically, the first detection camera 2 can directly take a picture of the top surface of the cable 100, which is obviously easy to implement and will not be elaborated on; the left partial curved surface of the semicircular reflecting surface 101 reflects the left partial image of the bottom of the cable 100 to the first detection camera 2, and reflects the side image of the left side of the cable 100 close to the bottom to the first detection camera 2, that is, the first detection camera 2 can detect at least half of the bottom surface and part of the left side of the cable 100 based on this picture; similarly, the right partial curved surface of the semicircular reflecting surface 101 reflects the right partial image of the bottom of the cable 100 to the first detection camera 2, and reflects the side image of the right side of the cable 100 close to the bottom to the first detection camera 2, that is, the first detection camera 2 can detect at least half of the bottom surface and part of the left side of the cable 100 based on this picture. In summary, the first detection camera 2 can take pictures to detect the bottom image of the entire bottom part of the cable 100, as well as a partial side image. Combined with the image obtained by taking pictures of the top surface, it can effectively detect the 360° circumference of the cable 100.

[0051] In summary, in the present application, a semicircular reflective surface 101 is cleverly provided and the position of the semicircular reflective surface is reasonably set, so that a first detection camera 2 can completely detect the entire circumference of the cable 100, and the cable 100 continues to slide relative to the shell 1, thereby completing the surface detection of the entire cable 100.

[0052] Optionally, the shell 1 is also provided with a second detection slot 12 connected to the first detection slot 11; the extension direction of the second detection slot 12 is consistent with the extension direction of the first detection slot 11, the cross-section of the second detection slot 12 perpendicular to the extension direction of the second detection slot 12 is trapezoidal, and the groove walls on both sides of the second detection slot 12 are inclined reflective surfaces 102, and the two inclined reflective surfaces 102 are symmetrically arranged; the cable detection device also includes a second detection camera 3, which is arranged on the slot side of the second detection slot 12 and directly above the cable 100; the images on both sides of the cable 100 are reflected to the second detection camera 3 through the groove walls on both sides of the second detection slot 12.

[0053] Specifically, considering that the shooting angle of the first detection camera 2 taking images of both sides of the cable 100 through the circular reflective surface 101 is small and inaccurate detection may easily occur, a second detection slot 12 and a second detection camera 3 are specially provided to focus on detecting the side surfaces of the cable 100, thereby further improving the detection accuracy.

[0054] Optionally, the cable detection device also includes a coaxial light source 4 installed in the shell 1; in addition, the shell 1 also has the function of blocking external stray light from irradiating the cable 100, ensuring that the cable is photographed and detected under the illumination of the coaxial light source 4, and ensuring that the lighting effect of each photo is basically the same, thereby improving the accuracy of photo detection.

[0055] The coaxial light source 4 includes a beam splitter 41 located at one side of the top of the first detection slot 11 and a light emitting component 42 installed at one side of the beam splitter 41; the light emitted by the light emitting component 42 is emitted toward the first detection slot 11 through the beam splitter 41. The light emitted by the light emitting component 42 is reflected by the beam splitter and then emitted toward the cable from top to bottom, and is reflected by the semicircular reflective surface 101 to illuminate the bottom side of the cable 100.

[0056] Optionally, an amplifying lens 43 is also provided on the top plate of the shell 1, and the amplifying lens 43 is located between the beam splitter 41 and the first detection camera 2. The amplifying lens 43 can effectively increase the range of light, make the image clearer, and improve the detection accuracy of the first detection camera 2 and the second detection camera 3.

[0057] Optionally, the radius of the semicircular reflective surface 101 is a, the diameter of the cable 100 is b, and the minimum distance from the center line of the cable 100 to the semicircular reflective surface 101 is c; wherein a≥3b, b≤c≤2b, so that the image of the bottom of the cable 100 can be completely photographed and detected by the first detection camera 2 through the reflection arc of the semicircular reflective surface 101, and the cable 100 is prevented from being too close to the semicircular reflective surface 101 or too far away from the semicircular reflective surface 101, so that the installation position of the first detection camera 2 is more appropriate. It should be supplemented that if a is less than 3b, the shooting angle of the first detection camera 2 will be smaller, resulting in the possibility that the complete bottom image of the cable 100 may not be fully detected.

[0058] Optionally, the housing 1 forms a detection hole 13 for the cable 100 to pass through, and the detection hole 13 is connected to the first detection slot 11. The cable 100 passes through the detection hole 13 to the first detection slot 11 and the second detection slot 12.

[0059] Optionally, a diffusion plate 44 is further provided between the light emitting component 42 and the beam splitter 41 to improve the uniformity of illumination.

[0060] Optionally, a diffuser lamp bead 14 is further installed at the bottom of the first inspection slot 11; the diffuser lamp bead 14 is located directly below the first inspection slot 11, and the width of the lamp bead is smaller than the width of the cable 100. The diffuser lamp bead 14 can further provide a fill-in light effect, and the blocking of the cable 100 and the camera angle limitation of the first inspection camera 2 make it impossible for the first inspection camera 2 to actually capture the diffuser lamp bead 14. The fill-in light effect of the diffuser lamp bead 1 further enhances the lighting effect on the bottom of the cable, so that surface defects of the cable 100 can be more easily detected by the first inspection camera 2.

[0061] Finally, it should be noted that although the above embodiments have been described in the specification and drawings of this application, this does not limit the scope of patent protection of this application. All technical solutions generated by replacing or modifying equivalent structures or equivalent processes based on the essential concept of this application using the contents recorded in the specification and drawings of this application, as well as directly or indirectly implementing the technical solutions of the above embodiments in other related technical fields, are included in the scope of patent protection of this application.

Claims

1. A cable detection device, characterized in that: include: The housing (1) is provided with a first detection slot (11) for a cable (100) to pass through in midair, the bottom surface of the first detection slot (11) being a semicircular reflection surface (101); the center line of the semicircular reflection surface (101) is higher than the center line of the cable (100) passing through the first detection slot (11); A first detection camera (2) is arranged on the slot side of the first detection slot (11) and is located directly above the cable (100); the bottom image and at least part of the side image of the cable (100) are reflected to the first detection camera (2) through the semicircular reflection surface (101), and the first detection camera (2) can directly take a picture of the top surface of the cable (100).

2. The cable detection device according to claim 1, characterized in that: The housing (1) is further provided with a second detection slot (12) connected to the first detection slot (11); The extension direction of the second detection slot (12) is consistent with the extension direction of the first detection slot (11), the cross section of the second detection slot (12) perpendicular to the extension direction of the second detection slot (12) is a trapezoid, and the groove walls on two opposite sides of the second detection slot (12) are inclined reflection surfaces (102), and the two inclined reflection surfaces (102) are symmetrically arranged; The cable detection device also includes a second detection camera (3), which is arranged on the slot side of the second detection slot (12) and is located directly above the cable (100); images on both sides of the cable (100) are reflected to the second detection camera (3) through the opposite side slot walls of the second detection slot (12).

3. The cable detection device according to claim 1, characterized in that: It also includes a coaxial light source (4) installed in the housing (1); The coaxial light source (4) comprises a beam splitter (41) located on one side of the top of the first detection slot (11) and a light output component (42) installed on one side of the beam splitter (41); the light emitted by the light output component (42) is emitted toward the first detection slot (11) through the beam splitter (41).

4. The cable detection device according to claim 3, characterized in that: An amplifying lens (43) is also provided on the top plate of the housing (1), and the amplifying lens (43) is located between the beam splitter (41) and the first detection camera (2).

5. The cable detection device according to claim 1, characterized in that: The radius of the semicircular reflecting surface (101) is a, the diameter of the cable (100) is b, and the minimum distance from the center line of the cable (100) to the semicircular reflecting surface (101) is c; Among them, a≥3b, b≤c≤2b.

6. The cable detection device according to claim 1, characterized in that: The housing (1) forms a detection hole (13) for the cable (100) to pass through, and the detection hole (13) is connected to the first detection slot (11).

7. The cable detection device according to claim 3, characterized in that: A diffusion plate (44) is also provided between the light emitting component (42) and the beam splitter (41).

8. The cable detection device according to claim 1, characterized in that: A diffusion lamp bead (14) is also installed at the bottom of the first detection slot (11); The diffuse light bead (14) is located directly below the first detection slot (11), and the width of the light bead is smaller than the width of the cable (100).

9. The cable detection device according to claim 1, characterized in that: The center line of the semicircular reflective surface (101) is located directly above the center line of the cable (100) of the first detection slot (11).

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