Railway sleeper counting detection device based on machine vision

Abstract

The utility model discloses a railroad sleeper counting detection device based on machine vision, which comprises a detection box girder, a high-definition industrial camera, a wide-angle lens, an infrared light-emitting diode (LED) light supplementing plate, a mileage encoder, a control circuit board, an embedded computer, an operation display screen and a power supply, the wide-angle lens is connected with the high-definition industrial camera, and the infrared LED light supplementing plate is located under the wide-angle lens and matched with the high-definition industrial camera to shoot images of a fastener on one side of a sleeper and the sleeper. The mileage encoder is arranged on the other side of the detection box girder and is mounted on a wheel axle; the high-definition industrial camera, the infrared LED light supplementing plate and the mileage encoder are connected with the control circuit board; and the embedded computer is connected with the control circuit board, the power supply and the operation display screen. According to the utility model, a unified ledger can be established for sleepers of a whole line and statistics is carried out, and the system can be used for ledger collection of newly built railways.

Description

TECHNICAL FIELD

[0001] The utility model relates to rail transit technical field, especially a kind of railway sleeper counting detection device based on machine vision. BACKGROUND

[0002] The sleeper account of railway line has problems such as multi-department management, incomplete data, unclear on-site account and so on. In the process of line inspection, the positioning information of various detection results output by the equipment managed by each department does not correspond to the real-time mileage, and the positioning and treatment of on-site diseases are greatly affected, and the efficiency is greatly reduced.

[0003] The system respectively identifies auxiliary markers and fasteners in images, and the interval between two adjacent auxiliary markers is a certain number of sleepers. Auxiliary marker identification can achieve coarse positioning of fasteners, and fastener identification and counting complete fine positioning. The above on-site image processing results show that most fasteners can be normally identified by the system, the identification rate of fasteners with pollution and foreign matter interference is low, which affects the accuracy of fine positioning, but the next auxiliary marker identification can effectively correct the error and will not cause long-distance error accumulation. However, the system only aims at the positioning and identification of fasteners, and does not complete the sleeper counting function.

[0004] Chinese patent publication No. CN106709911A discloses a high-speed rail fastener detection and counting method and system based on machine vision, which includes an image acquisition device, a DSP embedded processing system and two LED lighting devices. A fast fastener detection method based on the area and width characteristics of the fastener is designed. Compared with fastener positioning methods such as photoelectric encoder, photoelectric distance sensor and GPS positioning system, the fastener positioning method based on machine vision has the advantages of high positioning accuracy, no cumulative error, simple structure, easy to build, high cost performance, etc. The fastener counting results obtained by the system are uploaded to the host computer, and the fault positions of the track geometric parameter measurement sensor are labeled, which provides a quick and accurate maintenance position for railway maintenance personnel, and has very important significance for realizing the safety warning of railway. However, it is also aimed at fastener positioning, including GPS and photoelectric distance sensor, which is complex to realize, and uses DSP, which has a large algorithm difficulty. The types of fasteners on railway line are various, and it is difficult to realize the positioning of various fasteners, and the adaptive ability is poor.

[0005] Therefore, the main problems to be solved at present are: first, if the sleeper data complete collection is carried out, second, the preparation identification of sleeper. UTILITY MODEL CONTENT

[0006] The utility model discloses a railway sleeper counting detection device based on machine vision, which can establish a unified account for the sleepers of the whole line including the fastener system and perform statistics, can be used as the account collection work of the newly-built railway, and can have a set of sleeper account information corresponding to the actual mileage from the construction to the delivery for use, so as to be used as the basis for positioning of various detection devices and avoid problems such as inconsistency between the on-site account and the object.

[0007] The utility model discloses a railway sleeper counting detection device based on machine vision, which can establish a unified account for the sleepers of the whole line including the fastener system and perform statistics, can be used as the account collection work of the newly-built railway, and can have a set of sleeper account information corresponding to the actual mileage from the construction to the delivery for use, so as to be used as the basis for positioning of various detection devices and avoid problems such as inconsistency between the on-site account and the object.

[0008] The utility model discloses a railway sleeper counting detection device based on machine vision, which can establish a unified account for the sleepers of the whole line including the fastener system and perform statistics, can be used as the account collection work of the newly-built railway, and can have a set of sleeper account information corresponding to the actual mileage from the construction to the delivery for use, so as to be used as the basis for positioning of various detection devices and avoid problems such as inconsistency between the on-site account and the object.

[0009] Preferably, the high-definition industrial camera is located outside the steel rail.

[0010] Preferably, the high-definition industrial camera is connected to the embedded computer through a gigabit network port and a six-class or above network cable.

[0011] Preferably, the embedded computer, the control circuit board and the high-definition industrial camera are located on the same side, and the power supply and the mileage encoder are located on the same side.

[0012] Preferably, the detection device moves through a push rod, and the push rod is connected to the detection box girder through a quick detachable connecting mechanism.

[0013] Further preferably, the operation display screen is installed on the push rod, and the operation display screen is connected between the detection box girder and the embedded computer.

[0014] Preferably, lifting handles are installed on both sides of the detection box girder.

[0015] The utility model discloses only adopt 1 high definition industrial camera, cooperate low -power consumption and not dazzling infrared LED light supplementing board, under the drive of the vehicle body gyro wheel mileage encoder, emit light and take a sleeper image every other sleeper distance, and adopt wide -angle lens, so that every image includes at least 100mm overlapping area, guarantee sleeper image not to lose. Through the operation software of the embedded computer integrated in the detection box girder, load the pre -trained various sleepers depth learning model, carry out machine identification, can realize sleeper detection purpose accurately. Again combine the mileage value calculated by the encoder, and the starting mileage set, to obtain the accurate sleeper and the account table of mileage corresponding.

[0016] The utility model has the advantages and positive effects of:

[0017] 1, the utility model discloses install on the high definition industrial camera of detection girder, wide -angle lens, infrared LED light supplementing board, and cooperate mileage encoder, control circuit board, embedded computer, operation display screen, can take the photograph to the fastener and sleeper of one side of steel rail sleeper, then the image information is uploaded to the embedded computer, and the embedded computer identifies according to the data obtained, can realize sleeper detection accurately, and the sleeper is corresponding with mileage value, and the detection is fast and efficient, realizes the sleeper account table establishment work of whole line.

[0018] 2, the detection device of the utility model is as the detection equipment of sleeper account collection and generation, based on sleeper image collection and machine identification, can adapt to the sleeper identification detection of various fastener systems, simple, easy to realize, easy to expand, can adapt to the account census and establishment work of subway sleeper by increasing training model, provides the guarantee for the safe and comfortable operation of high -speed railway. ACCURACY

[0019] The technical solutions of the embodiments of the present application will be further described in detail below in combination with the drawings, but it should be known that these drawings are only designed for the purpose of explanation, and therefore, not as the limitation of the scope of the present application. In addition, unless specifically indicated, these drawings are only intended to conceptually illustrate the structural configuration described herein, and not necessarily drawn in proportion.

[0020] Figure 1 It is the schematic diagram of railway sleeper counting detection device based on machine vision provided by the utility model embodiment;

[0021] Figure 2 It is the working principle schematic diagram of detection device provided by the utility model embodiment.

[0022] In the figure: 1, high-definition industrial camera; 2, wide-angle lens; 3, infrared LED light supplement plate; 5, control circuit board; 4, embedded computer; 6, encoder connection cable; 7, lifting handle; 8, detection box girder; 9, connecting mechanism; 10, mileage encoder; 11, push rod; 12, operation display screen; 13, display screen connection cable; 14, power supply; 15, sleeper; 16, fastener. DETAILED DESCRIPTION

[0023] In order to further understand the application content, characteristics and effects of the present application, the following examples are given, and the details are described as follows with reference to the drawings:

[0024] In the description of the present application, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to 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.

[0025] In the description of the present application, it should be noted that unless otherwise specified and limited, the terms "mounting", "connecting", "connecting" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication between two elements. For ordinary skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0026] Please refer to Figure 1 and Figure 2 The embodiment of the present application provides a kind of based on machine vision's railway sleeper counting detection device, including detection box girder 8, high-definition industrial camera 1, wide-angle lens 2, infrared LED light supplement plate 3, mileage encoder 10, control circuit board 5, embedded computer 4, operation display screen 12, power supply 14, the high-definition industrial camera 1 is arranged in the side of detection box girder 8 and is installed in parallel with the view of sleeper 15, the wide-angle lens 2 is connected with high-definition industrial camera 1, the infrared LED light supplement plate 3 is located in the just below wide-angle lens 2, so that infrared LED light supplement plate 3 cooperates with high-definition industrial camera 1 and takes the image of fastener 16 and sleeper 15 on one side of sleeper 15, the high-definition industrial camera 1, infrared LED light supplement plate 3 are connected with control circuit board 5;

[0027] The mileage encoder 10 is arranged on the other side of the detection box girder 8, the mileage encoder 10 is installed on the wheel shaft of the support under the detection box girder 8, the mileage encoder 10 is connected with the control circuit board 5 through the encoder connecting cable 6, the power supply and signal receiving of the high-definition industrial camera 1, the infrared LED light supplement board 3 and the mileage encoder 10 are responsible by the control circuit board 5; the embedded computer 4, the control circuit board 5 and the power supply 14 are located in the detection box girder 8, the embedded computer 4 is connected with the control circuit board 5 and the display screen 12, the operation display screen 12 is installed on the detection box girder 8, and the power supply 14 supplies power for the high-definition industrial camera 1, the infrared LED light supplement board 3, the mileage encoder 10, the control circuit board 5, the embedded computer 4 and the operation display screen 12.

[0028] As a preferred embodiment, the high-definition industrial camera 1 is located outside the steel rail, so that the sleeper 15 image can be completely collected even at the turnout.

[0029] As a preferred embodiment, the high-definition industrial camera 1 is connected with the embedded computer 4 through a gigabit network port and a category 6 or above network cable, so as to ensure the transmission rate of data.

[0030] As a preferred embodiment, the embedded computer 4, the control circuit board 5 and the high-definition industrial camera 1 are located on the same side, and the power supply 14 and the mileage encoder 10 are located on the same side, so as to keep the weight of the detection box girder 8 balanced and facilitate operation and lifting.

[0031] As a preferred embodiment, the detection device moves by the push rod 11, the push rod 11 is connected with the detection box girder 8 through the quick detachable connecting mechanism 9, and quick installation and disassembly are realized.

[0032] As a preferred embodiment, the operation display screen 12 is installed on the push rod 11, the operation display screen 12 is connected with the detection box girder 8 through the display screen connecting cable 13, and the embedded computer 4 is connected inside the detection box girder 8.

[0033] As a preferred embodiment, lifting handles 7 are arranged on both sides of the detection box girder 8, so as to facilitate the lifting of the detection device.

[0034] In order to better understand the above-mentioned embodiments of the present application, the following further describes them.

[0035] High-definition industrial camera 1 is installed on one side of detection box girder 8, considering the influence of turnout on the image acquisition integrity of sleeper 15, it should be set on the outside of the steel rail, wide-angle lens 2 is connected with high-definition industrial camera 1 through C port, and high-definition industrial camera 1 is installed in parallel to the front view of sleeper 15.

[0036] The infrared LED light compensation plate 3 for light compensation is installed in the same mechanism with the high-definition industrial camera 1, and the relative position relationship is kept unchanged, and it is an integral whole.

[0037] The high-definition industrial camera 1 is connected with the embedded computer 4 through a gigabit network port and a six-class or above network cable, so as to ensure the communication speed.

[0038] The control circuit board 5 is connected with the mileage encoder 10 through a differential cable, the control circuit board 5 is installed in the detection box girder 8, and the mileage encoder 10 is installed on the wheel shaft to realize synchronous rotation.

[0039] The embedded computer 4, the control circuit board 5 and the high-definition industrial camera 1 are located on one side of the detection box girder 8, and the power supply 14 and the mileage encoder 10 are located on the other side of the detection box girder 8, so as to keep the weight balance of the whole detection box girder 8, and facilitate the operation and lifting.

[0040] The push rod 11 is connected with the detection box girder 8 through a quick detachable mounting mechanism, and can be quickly mounted and detached during use and after use.

[0041] The operation display screen 12 is connected with the detection box girder 8 through VGA and USB connecting lines, and is further connected with the embedded computer 4 in the detection box girder 8, so as to complete the transmission of video signals and the UI touch signal transmission of the touch panel.

[0042] When the mileage encoder 10 installed on the wheel shaft rotates synchronously, the rotating pulse is output to the control circuit board 5, the control circuit board 5 calculates the pulse quantity according to the distance interval set by the software running in the embedded computer 4, and outputs the shooting signal and the infrared LED flash signal to perform the shooting action when the interval is reached.

[0043] There is a certain phase difference between the infrared LED light compensation plate 3 and the shooting signal of the high-definition industrial camera 1, which is used to keep the high-definition industrial camera 1 at the brightest moment of the infrared LED light compensation plate 3, so as to meet the exposure requirement.

[0044] The photo taken by the high-definition industrial camera 1 is sent to the software of the embedded computer 4 through the network, the computer software loads the pre-trained model of the sleeper 15, inferences through a machine learning prediction algorithm, obtains the probability size of various sleepers 15, selects the largest probability as the type of the current sleeper 15 and saves; the current mileage value is also saved at the same time as the sleeper 15. A plurality of pre-trained sleeper 15 models are used to realize adaptive detection of various fastener 16 system sleepers 15 such as WJ-8, W300-1, WJ-7 and V type.

[0045] The computer software counts one sleeper 15 each time and saves in the database list, and when the line detection is completed, a complete account list can be output, which is used as a positioning reference for subsequent other products or equipment as unified detection results.

[0046] The above is only to illustrate a preferred embodiment of the present application, wherein the high-definition industrial camera 1 is not limited to be installed on the inner side or the outer side, and is suitable for the present application.

[0047] In summary, the high-definition industrial camera 1, the wide-angle lens 2 and the infrared LED light supplement plate 3 installed on the detection beam body are used in combination with the mileage encoder 10, the control circuit board 5, the embedded computer 4 and the operation display screen 12, the fastener 16 and the sleeper 15 on one side of the steel rail sleeper 15 can be photographed, and then the image information is uploaded to the embedded computer 4, the embedded computer 4 identifies according to the obtained data, so that the sleeper 15 detection can be accurately realized, the sleeper 15 is corresponded to the mileage value, the detection is fast and efficient, and the sleeper 15 account establishment work of the whole line can be realized.

[0048] The above is only a preferred embodiment of the present application, and does not limit the present application in any form, any simple modification, equivalent change and modification made according to the technical essence of the present application are within the scope of the technical scheme of the present application.

Claims

1. A machine vision based railway sleeper counting detection device, characterized in that, The detection device comprises a detection box beam, a high-definition industrial camera, a wide-angle lens, an infrared LED light supplementing plate, a mileage encoder, a control circuit board, an embedded computer, an operation display screen and a power supply, the high-definition industrial camera is arranged on one side of the detection box beam and is installed in parallel to the sleeper, the wide-angle lens is connected with the high-definition industrial camera, the infrared LED light supplementing plate is located directly below the wide-angle lens, so that the infrared LED light supplementing plate cooperates with the high-definition industrial camera to shoot the fastener on one side of the sleeper and the image of the sleeper, the high-definition industrial camera and the infrared LED light supplementing plate are connected with the control circuit board; the mileage encoder is arranged on the other side of the detection box beam, the mileage encoder is installed on the wheel shaft of the bracket below the detection box beam, and the mileage encoder is connected with the control circuit board; the embedded computer, the control circuit board and the power supply are located in the detection box beam, the embedded computer is connected with the control circuit board, the power supply and the operation display screen, and the operation display screen is installed on the detection box beam.

2. The machine vision-based railroad tie count detection apparatus of claim 1, further characterized by, The high-definition industrial camera is located outside the steel rail.

3. The machine vision-based railroad tie count detection apparatus of claim 1, further characterized by, The high-definition industrial camera is connected with the embedded computer through a gigabit network port and a six-type or above network cable.

4. The machine vision-based railroad tie count detection apparatus of claim 1, further characterized by, The embedded computer, the control circuit board and the high-definition industrial camera are located on the same side, and the power supply and the mileage encoder are located on the same side.

5. The machine vision-based railroad tie count detection apparatus of claim 1, further characterized by, The detection device moves through a push rod, the push rod is connected with the detection box beam through a quick detachable connecting mechanism.

6. The machine vision-based railroad tie count detection apparatus of claim 5, further characterized by, The operation display screen is installed on the push rod, and the operation display screen is connected between the detection box beam and the embedded computer in the detection box beam.

7. The machine vision-based railroad tie count detection apparatus of claim 1, further characterized by, Lifting handles are arranged on the two sides of the detection box beam.

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