Dual-camera overhead line system geometric parameter detection device

Abstract

The utility model relates to the technical field of contact networks, and discloses a double-camera contact network geometric parameter detection device, which comprises a first camera, a second camera and a laser, the first camera and the second camera are oppositely arranged at the top of an installation main body, and the laser is positioned between the two cameras, so that high-precision double-view-angle shooting of the contact network is realized. The device can ensure that at least one camera works normally under any natural illumination condition, a clear overhead line system image is acquired, pixel coordinates of the bottom of the contact line in the image are accurately found out through an image processing algorithm, and the geometric position of the contact line in an actual space is calculated through a coordinate system. Besides, the device has the capability of autonomously switching the working modes of the double cameras, can realize continuous high-precision detection in a strong sun illumination environment in the daytime, is suitable for any geometric detection method of the overhead line system, has strong environmental adaptability, universality and flexibility, and improves the detection efficiency at the same time.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of contact network, concretely relates to a kind of double camera contact network geometric parameter detection device. BACKGROUND

[0002] In recent years, China's electrified railway transportation system has achieved remarkable development achievements, not only improves the efficiency and speed of railway transportation, but also greatly promotes the interconnection of regional economy. In this process, as the key component of electric locomotive to obtain power, the safety and stability of the running state of contact network are crucial to ensure the safe and efficient operation of high-speed train. The geometric parameters of contact network, such as wire height, pull-out value, parallel line spacing and contact line height difference, are important indicators to measure the performance of contact network, which directly affects the good contact between train pantograph and contact line, and further affects the power transmission efficiency and the stability of train operation.

[0003] In order to realize the accurate monitoring of contact network geometric parameters, the current contact network suspension state detection monitoring device (4C) installed on the detection vehicle for contact network geometric parameter detection is mainly based on machine vision non-contact light-cut contact network geometric parameter detection device, which uses the light-dark boundary (i.e. light-cut) formed by light projection on contact network to accurately measure the geometric size of contact network. This method has the advantages of non-contact, high measurement accuracy, strong data real-time and other advantages, and is an important means to realize intelligent monitoring of contact network state.

[0004] However, although the non-contact light-cut method has many advantages in theory, it faces a challenge that cannot be ignored in practical application: sunlight interference in open environment. Since contact network detection is usually carried out outdoors, strong sunlight may directly enter the camera lens during the day, causing serious glare and spot effect, which not only reduces the image quality, but also completely obscures the real profile of contact network, making it difficult for machine vision-based algorithms to accurately identify and measure the geometric parameters of contact network. Therefore, how to effectively suppress sunlight interference under complex outdoor lighting conditions and ensure the stability and accuracy of contact network geometric parameter detection has become a technical problem to be solved. SUMMARY

[0005] The utility model aims at overcoming the above problems, providing a kind of double camera contact network geometric parameter detection device, can in open environment, autonomous switching double camera realizes the continuous high-precision detection of contact network geometric parameters under the environment of strong sunlight in the daytime.

[0006] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0007] The utility model provides a kind of double camera contact network geometric parameter detection device, including installation main body and the first camera and second camera being set to installation main body top, the first camera and second camera are oppositely arranged, laser is arranged in the middle position of the first camera and second camera, and the laser is set in installation main body top.

[0008] The utility model further improves that the installation main body outside is provided with integral encapsulation shell, the first camera, second camera and laser are all encapsulated inside the integral encapsulation shell.

[0009] The utility model further improves that the laser emitted by the laser is perpendicular to the section of the integral encapsulation shell and emits upward.

[0010] The utility model further improves that the side of the laser is provided with aviation socket of supply module power supply and communication network mouth.

[0011] The utility model further improves that the aviation socket is set to the side of installation main body.

[0012] The utility model further improves that the installation main body is provided with a plurality of mounting holes.

[0013] The utility model further improves that the mounting hole includes first mounting hole, second mounting hole, third mounting hole and fourth mounting hole, and the first mounting hole and second mounting hole are set between the first camera and laser, and the third mounting hole and fourth mounting hole are set between the second camera and laser.

[0014] The utility model further improves that the first mounting hole, second mounting hole, third mounting hole and fourth mounting hole are oppositely set respectively on the edge of installation main body close to side.

[0015] The utility model further improves that the first camera and second camera are area array camera.

[0016] The utility model further improves that the laser is area laser.

[0017] Compared with prior art, the utility model has following beneficial effects:

[0018] The utility model provides a kind of double camera contact network geometric parameter detection device, by the first camera and second camera being oppositely arranged on the top of installation main part and the laser in the middle of two cameras, high-precision double-view shooting to contact network is realized.The device can ensure at least one camera normal work under any natural light condition, clear contact network image is collected, pixel coordinates of contact line bottom in image are accurately found out by image processing algorithm, and the geometric position of contact line in actual space is obtained by coordinate system calculation.In addition, the device has the ability of autonomous switching double camera working mode, can realize continuous high-precision detection under daytime strong sunlight environment, and is suitable for any kind of contact network geometric detection method, with strong environmental adaptability, versatility and flexibility, while improving detection efficiency.

[0019] Further, the installation main body is externally provided with an overall packaging shell, the first camera, the second camera and the laser are packaged inside the overall packaging shell, and the overall packaging shell provides necessary physical protection for the first camera, the second camera and the laser inside, can prevent dust, moisture, dirt and other external pollutants from invading, thereby prolonging the service life of the equipment;In addition, under extreme weather conditions, the overall packaging shell can keep the internal temperature and humidity relatively stable, to ensure that the camera and the laser can work normally.

[0020] Further, a plurality of mounting holes are provided on the installation main body, and the mounting holes are arranged at the edges of the installation main body close to the side edges, so that the detection device can be firmly mounted on the rail transit facility through fasteners, and the mounting holes located at the side edge edges of the installation main body can make the fasteners penetrate and fix more easily, avoiding installation difficulties caused by space limitations. BRIEF DESCRIPTION OF DRAWINGS

[0021] The drawings described herein are for illustrative purposes only and are not intended to limit the scope of the utility model disclosure in any way. In addition, the shapes and proportions of the components in the drawings are only illustrative, and are used to help understand the utility model, and are not specific limitations on the shapes and proportions of the components of the utility model.

[0022] Figure 1 It is a front view of the double camera contact network geometric detection device of the utility model;

[0023] Figure 2 It is a top view of the double camera contact network geometric detection device of the utility model.

[0024] Wherein: 1, first camera; 2, laser; 3, second camera; 401, first mounting hole; 402, second mounting hole; 403, third mounting hole; 404, fourth mounting hole; 5, overall package shell; 6, aviation socket. DETAILED DESCRIPTION

[0025] To make the objects, technical solutions, and advantages of the embodiments of the present application clearer, the following will be a clear and complete description of the technical solutions in the embodiments of the present application in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings herein can be arranged and designed in various different configurations.

[0026] Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of protection of the present application.

[0027] It should be noted that: similar reference numbers and letters represent similar items in the following drawings, therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0028] In the description of the embodiments of the present application, it should be noted that if the terms "upper", "lower", "horizontal", "inner", and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship of the product of the present application when it is usually placed, only for the convenience of describing the present application and simplifying the description, and it does not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, therefore, it cannot be understood as a limitation on the present application. In addition, the terms "first", "second", and the like are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0029] In addition, if the term "horizontal" appears, it does not mean that the component must be absolutely horizontal, but can be slightly inclined. For example, "horizontal" only means that its direction is relatively more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined.

[0030] In the description of the embodiments of the utility model, still need explaining, unless another explicit provision and limitation, if appearing term " setting " " install " " link " " connect " should do broad sense understanding, for example, can be fixed connection, also can be detachable connection, or integrally connected, can be mechanical connection, also can be electrical connection, can be direct connection, also can be indirectly connected through intermediate medium, can be two elements inside the intercommunication. For ordinary skilled in the art, can understand the concrete meaning of the above-mentioned term in the utility model according to specific circumstances.

[0031] The utility model will be described further in detail below in connection with the drawings:

[0032] As Figure 1 And Figure 2 The utility model provides a kind of double camera overhead line geometric parameter detection device, including first camera 1, laser 2, second camera 3, whole encapsulation shell 5 and aviation socket 6;Wherein detection device includes installation main body and the first camera 1 and second camera 3 arranged at the top of installation main body, first camera 1 is arranged at the top of installation main body one side, for collecting the image data of overhead line, second camera 3 is oppositely arranged with first camera 1, also located at the top of installation main body, for switching use when light condition is bad, ensure detection continuity.

[0033] Laser 2 is located between first camera 1 and second camera 3, and the laser emitted vertically to the section of whole encapsulation shell 5 is emitted upward, and the distortion curve formed by laser irradiation on overhead line is captured by camera, for subsequent geometric parameter calculation.

[0034] As preferred scheme, first camera 1 and second camera 3 are area array camera, other types of camera can also be used according to demand.

[0035] As preferred scheme, laser 2 is surface laser, other types of laser can also be used according to demand.

[0036] Installation main body is provided with whole encapsulation shell 5 outside, and first camera 1, second camera 3 and laser 2 are all encapsulated inside whole encapsulation shell 5, effectively protect first camera 1, second camera 3 and laser 2 from dust, water vapor and other external factors interference, ensure the stable operation of device.

[0037] Aviation socket 6 of supply module power supply and communication network interface is provided on the side of laser 2, and aviation socket 6 is provided on the side of installation main body, provides power supply and communication interface for laser 2 and whole detection device, ensure that device can work normally and transmit data.

[0038] The mounting body is provided with a plurality of mounting holes, including a first mounting hole 401, a second mounting hole 402, a third mounting hole 403 and a fourth mounting hole 404, the first mounting hole 401 and the second mounting hole 402 are arranged between the first camera 1 and the laser 2, the third mounting hole 403 and the fourth mounting hole 404 are arranged between the second camera 3 and the laser 2, the first mounting hole 401 and the second mounting hole 402 are oppositely arranged at the edge close to the side edge of the mounting body, and the third mounting hole 403 and the fourth mounting hole 404 are oppositely arranged at the edge close to the side edge of the mounting body. The detection device can be firmly mounted on the rail transit facility through the four mounting holes, and the mounting process is simple and convenient.

[0039] Working principle

[0040] The dual-camera overhead line geometry detection device of the utility model is based on the combination of machine vision and laser ranging technology. The device uses two high-speed industrial area array digital cameras to be oppositely mounted, and collects the distorted laser curve generated on the contact line by the surface laser through the two cameras at the same time. The two cameras are oppositely arranged and can capture images of different angles and positions of the laser irradiation on the overhead line. By using professional image processing algorithms, the device can find the pixel coordinates of the bottom of the contact line in the image. Then, through a series of coordinate system calculations, the geometric position of the contact line in the actual space can be accurately obtained. Such design ensures that at least one camera can normally collect overhead line parameter data even in a strong sunlight environment during the day, thereby realizing continuous high-precision overhead line geometry parameter detection.

[0041] Many embodiments and many applications other than those provided in the foregoing examples will be apparent from consideration of the preceding description and drawings. Thus, the scope of the present teachings should not be determined from the preceding description alone, but rather from the following claims in their full breadth and from the full breadth of equivalents to which they are entitled. The disclosures of all articles and references, including patent applications and publications, are incorporated by reference for the entire disclosure they contain. No admission is made that any of the aspects of the subject matter disclosed herein are not entitled to antedate any prior publication by virtue of prior disclosure or prior knowledge. Any reference to a prior publication or knowledge is not intended to be a concession that the prior publication or knowledge is widely available or known to the public.

[0042] The above is a further detailed description of the utility model, and the specific implementation of the utility model should not be limited to this. For ordinary skilled persons in the technical field to which the utility model belongs, some simple deductions or substitutions can be made without departing from the concept of the utility model, and all of them should be regarded as falling within the protection scope of the utility model as determined by the claims submitted.

Claims

1. A double-camera overhead line geometry parameter detection device, characterized in that, The installation body is provided with a first camera (1) and a second camera (3) on the top of the installation body, the first camera (1) and the second camera (3) are oppositely arranged, a laser (2) is arranged between the first camera (1) and the second camera (3), and the laser (2) is arranged on the top of the installation body.

2. The double-camera overhead line geometry parameter detection device according to claim 1, characterized in that, The installation body is provided with an overall packaging shell (5) outside, and the first camera (1), the second camera (3) and the laser (2) are packaged in the overall packaging shell (5).

3. The double-camera overhead line geometry parameter detection device according to claim 2, characterized in that, The laser emitted by the laser (2) is emitted upward perpendicularly to the section of the overall packaging shell (5).

4. The double-camera overhead line geometry parameter detection device according to claim 1, characterized in that, The aviation socket (6) for supplying power supply and communication network interface is arranged on the side of the laser (2).

5. The double-camera overhead line geometry parameter detection device according to claim 4, characterized in that, The aviation socket (6) is arranged on the side of the installation body.

6. The dual-camera overhead line geometry parameter detection device according to claim 1, characterized in that, A plurality of mounting holes are arranged on the installation body.

7. The double-camera overhead line geometry parameter detection device according to claim 6, characterized in that, The mounting holes include a first mounting hole (401), a second mounting hole (402), a third mounting hole (403) and a fourth mounting hole (404), the first mounting hole (401) and the second mounting hole (402) are arranged between the first camera (1) and the laser (2), and the third mounting hole (403) and the fourth mounting hole (404) are arranged between the second camera (3) and the laser (2).

8. The double-camera overhead line geometry parameter detection device according to claim 7, characterized in that, The first mounting hole (401), the second mounting hole (402), the third mounting hole (403) and the fourth mounting hole (404) are respectively arranged on the edge of the installation body close to the side.

9. The dual-camera overhead line geometry parameter detection device according to claim 1, characterized in that, The first camera (1) and the second camera (3) are area array cameras.

10. The dual-camera overhead line geometry parameter detection device according to claim 1, characterized in that, The laser (2) is an area laser.

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