WO2020088197A1 - 列车识别系统及其方法、列车安全检查系统及其方法 - Google Patents

列车识别系统及其方法、列车安全检查系统及其方法 Download PDF

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Publication number
WO2020088197A1
WO2020088197A1 PCT/CN2019/109923 CN2019109923W WO2020088197A1 WO 2020088197 A1 WO2020088197 A1 WO 2020088197A1 CN 2019109923 W CN2019109923 W CN 2019109923W WO 2020088197 A1 WO2020088197 A1 WO 2020088197A1
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Prior art keywords
train
inspection
inspected
identification
inspection device
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PCT/CN2019/109923
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English (en)
French (fr)
Inventor
许艳伟
喻卫丰
胡煜
孙尚民
Original Assignee
同方威视技术股份有限公司
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Application filed by 同方威视技术股份有限公司 filed Critical 同方威视技术股份有限公司
Priority to PL437743A priority Critical patent/PL245082B1/pl
Priority to GB2106262.5A priority patent/GB2593087B/en
Priority to US17/287,116 priority patent/US11952027B2/en
Priority to PL443921A priority patent/PL443921A1/pl
Publication of WO2020088197A1 publication Critical patent/WO2020088197A1/zh

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
    • B61L25/00—Recording or indicating positions or identities of vehicles or trains or setting of track apparatus
    • B61L25/02—Indicating or recording positions or identities of vehicles or trains
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
    • B61L27/00—Central railway traffic control systems; Trackside control; Communication systems specially adapted therefor
    • B61L27/60—Testing or simulation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
    • B61L1/00—Devices along the route controlled by interaction with the vehicle or train
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
    • B61L25/00—Recording or indicating positions or identities of vehicles or trains or setting of track apparatus
    • B61L25/02—Indicating or recording positions or identities of vehicles or trains
    • B61L25/021—Measuring and recording of train speed
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
    • B61L25/00—Recording or indicating positions or identities of vehicles or trains or setting of track apparatus
    • B61L25/02—Indicating or recording positions or identities of vehicles or trains
    • B61L25/025—Absolute localisation, e.g. providing geodetic coordinates
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
    • B61L25/00—Recording or indicating positions or identities of vehicles or trains or setting of track apparatus
    • B61L25/02—Indicating or recording positions or identities of vehicles or trains
    • B61L25/04—Indicating or recording train identities
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
    • B61L27/00—Central railway traffic control systems; Trackside control; Communication systems specially adapted therefor
    • B61L27/40—Handling position reports or trackside vehicle data
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
    • B61L27/00—Central railway traffic control systems; Trackside control; Communication systems specially adapted therefor
    • B61L27/50—Trackside diagnosis or maintenance, e.g. software upgrades
    • B61L27/57—Trackside diagnosis or maintenance, e.g. software upgrades for vehicles or trains, e.g. trackside supervision of train conditions

Definitions

  • the present disclosure relates to the technical field of train safety inspection, in particular to a train identification system and method, a train safety inspection system and method.
  • a related technology known to the inventor is to provide a plurality of magnetic steel sensors along the rails, and use the magnetic steel to detect the relative speed of the train and the position of the train axle to determine the wheelbase, and identify the train type according to the different wheelbases.
  • this kind of identification scheme needs to install the sensor on the railway, which occupies a large area, has certain safety risks for train operation, and has poor response to low-speed trains.
  • the sensor installation point is limited and the number is limited, so that the detection point is limited.
  • modified vehicles such as vehicles with the same wheelbase parameter, it cannot be distinguished from the wheelbase by being converted to customers or trucks.
  • Another related technology known to the inventor is to obtain the side profile information of the vehicle by using a linear array camera to automatically identify the vehicle type through the control system.
  • this recognition scheme also has certain requirements and restrictions on the installation point of the line array camera.
  • the same train can only have one detection opportunity. It has poor adaptability to speed changes, large footprint, large number of collected images, and slow processing speed. The processing capacity of the system is high.
  • the embodiments of the present disclosure provide a train identification system and method, a train safety inspection system and method, which can improve the flexibility of train identification.
  • a train identification system including:
  • Remote detection component used to obtain the overall characteristics of the inspected train through remote monitoring
  • the identification module is used to determine the type and / or running condition of the checked train based on the acquired overall characteristic information.
  • the types of trains to be inspected include locomotives, freight cars, passenger cars, and / or engineering vehicles; or the travel status of the trains to be inspected includes whether or not the train arrives, the direction of travel, the route of travel, and / or the speed of travel.
  • the remote detection component includes a camera for capturing video information of the train being inspected.
  • each camera has a different focal length, which is used to shoot when the train is in a different distance range.
  • the camera's shooting angle, height, and / or focal length are adjustable.
  • the remote detection component includes laser or radar.
  • the second aspect of the embodiments of the present disclosure provides a method for a train identification system based on the above embodiments, including:
  • the remote detection component obtains the overall characteristic information of the inspected train through remote monitoring
  • the recognition module judges the type and / or running condition of the checked train based on the acquired overall characteristic information.
  • the step of the identification module judging the type and / or running status of the inspected train based on the acquired overall characteristic information includes: the identification module extracts the characteristic parameters of the train from the acquired overall characteristic information to determine the inspected Train speed
  • the identification module extracts the characteristic parameters of the train from the acquired overall characteristic information to determine the running speed of the checked train.
  • the specific steps include:
  • a third aspect of the embodiments of the present disclosure provides a train safety inspection system based on the train identification system of the above embodiments, including:
  • the train identification system of each of the above embodiments is located near the area where the inspection equipment is located;
  • the radiation control module is used to control the working state of the inspection equipment according to the type and / or running condition of the inspected train determined by the identification module.
  • the radiation control module is used to turn on the inspection device for preparation if the identification module determines that there is a freight car in the upcoming train to be inspected, and keep the inspection device off when there is no freight car.
  • the radiation control module is used to cause the inspection device to emit rays when the identification module determines that a freight car passes through the inspection device, and the identification module determines that the locomotive or passenger car passes the inspection device, or the inspected train When the traveling speed is reduced to a preset value or stopped, the inspection equipment stops emitting rays.
  • the radiation control module is used to adjust the scanning frequency of the inspection device to match the traveling speed of the inspected train determined by the identification module.
  • the train identification system is integrated on the inspection equipment.
  • a train safety inspection method including:
  • the step of controlling the working state of the inspection equipment according to the determined type and / or running condition of the inspected train specifically includes:
  • the step of controlling the working state of the inspection equipment according to the determined type and / or running condition of the inspected train specifically includes:
  • the inspection equipment With the inspection equipment turned on, determine the type of the train that passed the inspection equipment. If a freight car passes the inspection equipment, the inspection equipment emits rays for inspection; if the vehicle or passenger car passes the inspection equipment, the inspection equipment Stop emitting radiation or reduce the radiation emission dose.
  • the step of controlling the working state of the inspection equipment according to the determined type and / or running condition of the inspected train specifically includes:
  • the inspection equipment In the case where the traveling speed of the inspected train is reduced to a preset value or stopped, the inspection equipment is stopped to emit radiation or the radiation emission dose is reduced.
  • it also includes:
  • the remote detection component obtains the overall feature information of the detected train through remote monitoring, and the remote detection component can be flexibly arranged outside the area where the train track is located, reducing the installation location Requirements; and through remote monitoring, there are multiple recognition opportunities in the process of trains traveling from far to near to improve the accuracy of recognition, and can be recognized early to give timely results; in addition, by obtaining the overall characteristics of the train being inspected
  • the information can comprehensively provide a basis for judging the type of train and / or the running situation, further improve the accuracy of identification, and have good adaptability to different trains.
  • FIG. 1 is a schematic diagram of module composition of some embodiments of a train identification system of the present disclosure
  • FIG. 2 is a schematic diagram of module composition of some embodiments of the train safety inspection system of the present disclosure
  • FIG. 3 is a schematic flowchart of some embodiments of a train safety inspection method of the present disclosure
  • FIG. 4 is a schematic flowchart of other embodiments of the train safety inspection method of the present disclosure.
  • first and second appearing in the present disclosure are only for convenience of description, to distinguish different component parts having the same name, and do not indicate a sequential or primary-subordinate relationship.
  • orientation or positional relationship indicated by “upper”, “lower”, “top”, “bottom”, “front”, “back”, “inner”, and “outer” is used as the basis
  • the orientation or positional relationship shown in the drawings is only for the convenience of describing the present disclosure, and does not indicate or imply that the device referred to must have a specific orientation, be constructed and manipulated in a specific orientation, and therefore cannot be construed as limiting the protection scope of the present disclosure .
  • the present disclosure provides a train identification system.
  • it includes a remote detection component 10 and an identification module 20.
  • the remote detection component 10 is used to obtain the overall characteristics of the train under inspection through remote monitoring. Information, including the color or outline of the train. For example, it can be set in the area outside the train in the width direction of the track to achieve remote monitoring.
  • the identification module 20 is used to extract the characteristic parameters of the train according to the acquired overall characteristic information, so as to determine the type and / or running condition of the detected train. According to the judgment result of the identification module 20, fault diagnosis, maintenance or safety inspection of the train can be performed.
  • the types of trains to be inspected include special types such as locomotives, freight cars, passenger cars, and / or engineering vehicles.
  • the type of the trains here may be the entire type of train or the type of each car in a single train.
  • the requirements for follow-up work such as fault diagnosis, repair or safety inspection are different, so a quick and accurate judgment of the car model can ensure that the follow-up work is performed correctly.
  • the travel status of the inspected train includes: the arrival of the train, the direction of travel, the travel route and / or the speed of travel.
  • the start and stop of the working equipment can be controlled in real time according to whether there is a train or not, and the working performance parameters of the equipment can be matched with the traveling direction, traveling route and / or traveling speed of the train.
  • the train identification system of this embodiment of the present disclosure has at least one of the following advantages:
  • the remote detection unit 10 adopts the remote monitoring method, which can flexibly arrange the remote detection unit 10 outside the area where the train track is located, reduce the need for installation location, and can be installed in the area close to the working equipment corresponding to the train identification system. Compact layout, small footprint and easy maintenance. It is more flexible in choosing the installation site, without considering the conditions such as bends, turnouts and stations.
  • line array cameras or sensors can only be detected when the train travels to the location of the detection component. Considering the time required for information processing, in order to identify early, the detection component can only be set at a distance from the working equipment (such as inspection equipment). The separation distance needs to be set according to the traveling speed of the train, and it occupies a large area, which is not convenient for maintenance.
  • the remote detection unit 10 adopts the remote monitoring method, and there are multiple recognition opportunities during the train travel from far to near to improve the recognition accuracy, and can be recognized early to give the results in time for the work equipment to use, It also has strong adaptability to trains with fast travel speed, and can be applied to trains with different travel speeds.
  • the remote detection unit 10 can only be set at a distance from the working equipment (such as inspection equipment), and the position of the detection unit may need to be changed again after the train speeds up.
  • the linear array camera needs to stitch the collected images, the number of processed images is large, the processing speed is slow, and the response ability is poor.
  • the remote detection component 10 includes a camera for capturing video information of the detected train
  • the identification module 20 is used for extracting characteristic parameters of the train from the video information captured by the camera to determine the type and type of the detected train / Or progress. In the video, the whole train and the images of some cars in the train can be identified and judged.
  • the key feature parameters of the train can be directly extracted through video, such as train color, length, height, and wheelbase.
  • the train recognition system can use a large number of samples for deep learning to match the key feature parameters that characterize the type of train being inspected. Determine the type of train being inspected.
  • the camera can be taken from an appropriate angle, and in order to improve the accuracy of judgment, multiple cameras can be installed to shoot from multiple different angles to comprehensively reflect the details of each angle of the train.
  • the images in the video can intuitively and accurately determine whether the train arrives and the direction of travel, and directly determine the train's travel route, effectively solving complex track conditions such as bends and turnouts.
  • the speed of the inspected train can be accurately obtained through the image changes in the video.
  • the first position and the second position are selected from the far and near directions within the field of view of the camera, and the number of frames and the time required for the detected train to reach the second position from the first position are obtained from the video, and the video is obtained The frame rate of the train in from the first position to the second position. Then compare the obtained frame rate with the frame rate of the train at the preset travel speed to obtain the travel speed of the inspected train.
  • any two detection positions can be used as the first position and the second position to achieve speed detection, so the speed detection of the detected train can be continuous and uninterrupted It can be carried out at the same time, and it can also detect the direction of the vehicle, such as abnormal situations such as parking and reversing.
  • multiple cameras there are multiple cameras, multiple cameras are located in the same area, and have different focal lengths, respectively used for shooting when the train is at a different distance range relative to the camera, the focal length is positively related to the distance range In order to ensure the quality of the video shooting in the process of the train traveling from far to near, it provides a basis for the accurate judgment of the recognition module 20.
  • a camera with a small focal length to shoot the train at close range a camera with a large focal length to shoot the train remotely, and a camera with a central focal length to shoot the train at a middle distance.
  • a camera with a focal length of 10 mm shoots a train within the working equipment area
  • a camera with a focal length of 10-30 mm shoots a range of intermediate distances
  • Each camera can cover a certain range, and the coverage of cameras with different focal lengths is also different, as long as multiple cameras achieve continuous coverage from far to near, without integrating the video captured by each camera.
  • the camera with the largest focal length starts to be identified at the earliest, then it is near, and so on. As long as there is a train within the range of the camera, it will be recognized all the time.
  • the remote detection components 10 are installed on the working equipment.
  • the overall structure of the remote detection component 10 and the working equipment can be made more compact, occupying less space, and easy to maintain.
  • the camera's shooting angle, height, and / or focal length are adjustable.
  • the shooting angle of the camera By adjusting the shooting angle of the camera, the best shooting angle for the train can be adjusted, and the position of the train on multiple side-by-side rails can also be adjusted; by adjusting the shooting height of the camera, the position of the shooting far point can be adjusted to Allow sufficient time for the identification of train types and / or travel conditions.
  • the focal length of the camera By adjusting the focal length of the camera, the distance range of the video can be captured as needed.
  • the first position and the second position can be determined according to the aforementioned method to speed the train measuring.
  • a set of inspection equipment 30 is needed to inspect multiple tracks, two methods may be used. First, there is one camera, which divides the captured video into different areas to correspond to different tracks. Second, there are multiple cameras, and each camera respectively shoots different tracks to detect and identify trains traveling on different tracks.
  • the remote detection unit 10 in the above embodiment may also use laser or radar.
  • the laser detection can be scanned at a certain frequency, and the principle of laser distance measurement is used to obtain the contour information of the detected train, so as to match and identify the train type, or judge the train travel status.
  • Radar detection is to use electromagnetic waves to find the target train to be inspected and determine its spatial position. The radar emits electromagnetic waves to illuminate the target and receive its echoes, thereby obtaining the distance from the target to the point of electromagnetic wave emission, the rate of change of distance (radial velocity) Position, altitude and other information.
  • the present disclosure also provides an identification method based on the train identification system described in the above embodiments. In some embodiments, it includes:
  • the remote detection component 10 obtains the overall characteristic information of the inspected train through remote monitoring;
  • the identification module 20 determines the type and / or running status of the train under inspection based on the acquired overall feature information.
  • the step of the identification module 20 determining the type and / or running status of the checked train based on the acquired overall feature information includes: the identifying module 20 extracts the characteristic parameters of the train from the acquired overall feature information to determine The speed of the checked train.
  • the identification module 20 extracts the characteristic parameters of the train from the acquired overall characteristic information to determine the traveling speed of the checked train.
  • the specific steps include:
  • the traveling speed of the inspected train can be accurately obtained through the image change in the video.
  • the present disclosure also provides a train safety inspection system, as shown in FIG. 2, which includes an inspection device 30, a radiation control module 40, and the train identification system of the above embodiment.
  • the inspection equipment 30 is used to perform safety inspection on the inspected train.
  • the ray source in the inspection equipment 30 emits rays to scan and inspect the passing train to determine whether the cargo in the train is in compliance with safety standard.
  • the train identification system is located adjacent to the area where the inspection device 30 is located, and the radiation control module 40 is used to control the working state of the inspection device 30 according to the type and / or running condition of the inspected train determined by the identification module 20.
  • the remote detection component 10 since the remote detection component 10 adopts the remote monitoring mode, the remote detection component 10 can be arranged in an area adjacent to the inspection device 30, so that the overall layout of the device is compact, the occupied area is small, and maintenance is convenient. It is more flexible in choosing the installation site, without considering the conditions such as bends, turnouts and stations. Moreover, the remote detection unit 10 judges the train type and traveling situation more accurately, and can accurately control the start and stop of the inspection device 30 and the timing of emitting rays. In addition, the remote detection unit 10 can identify the train type and the traveling situation early, and increase the information processing speed, so that the inspection device 30 can inspect the goods in the train in a comprehensive and timely manner, and avoid missing inspections.
  • the remote detection unit 10 can only be set at a distance from the inspection device 30, so that the entire train safety inspection system needs to occupy a larger space and needs to be different. Locations are maintained separately. Moreover, the train can only be identified once, and the accuracy of the identification result is not high, which may result in the missed inspection of the listed goods.
  • the radiation control module 40 is used to turn on the inspection device 30 for preparations such as preparation when the identification module 20 determines that there is a freight car in the upcoming train to be inspected.
  • the inspection device 30 remains in a closed state, for example, the train is a single locomotive or a double locomotive, which does not include a carriage, or the entire train is a passenger car, etc.
  • the identification module 20 can determine in advance whether there is a freight car in the upcoming train to be checked, and if so, turn on the inspection device 30 to prepare in advance, when the freight car passes the inspection device 30 The rays are re-emitted, so that the inspection state equipment can be in the inspection state in time when the freight car passes by. If there is no truck compartment, keep the inspection device 30 closed, reduce the power consumption of the inspection device 30, and reduce the equipment loss.
  • the radiation control module 40 is used to cause the inspection device 30 to emit rays when the identification module 20 determines that a freight car passes the inspection device 30, and the identification module 20 determines that the vehicle or passenger car passes the inspection device 30, or when the traveling speed of the inspected train is reduced to a preset value or stopped, the inspection device 30 stops emitting radiation or reduces the radiation emitting dose.
  • This embodiment emits a ray inspection cargo when it recognizes that a freight car in the train passes the inspection device 30, and can comprehensively inspect the cargo carried in the train, and stops emitting the ray when the locomotive or passenger car passes the inspection device 30, or Reducing the radiation emission dose can reduce the damage caused by radiation to personnel, and improve the safety of the inspection device 30 for train inspection.
  • the inspection device 30 may also stop emitting rays.
  • the radiation control module 40 is used to adjust the scanning frequency of the inspection device 30 to match the traveling speed of the inspected train determined by the identification module 20.
  • the speed of the train travel is obtained through the video stream, and the scanning frequency of the inspection device 30 can be adjusted in real time to ensure that the scanned image is not distorted, so that the cargo situation inside the truck can be more clearly observed.
  • the train identification system is integrated on the inspection device 30.
  • the remote detection component 10 does not need to occupy extra space, the equipment layout is compact, and the floor space is small, which is convenient for the layout and installation of the scanning inspection equipment 30, and the train safety inspection system can be maintained as a whole equipment, which is flexible when selecting the installation site The degree is greater, no need to consider the situation of bends, turnouts, stations and so on.
  • the identification module 20 can be set independently or integrated with the control system of the inspection device 30 itself.
  • the present disclosure provides an inspection method based on the above-mentioned train identification system or train safety inspection system.
  • it includes:
  • Step 101 Determine the type and / or running status of the train being inspected
  • Step 102 Control the working state of the inspection device 30 according to the determined type and / or running condition of the inspected train.
  • step 101 may be performed by the identification module 20 in real time
  • step 102 may be performed by the radiation control module 40.
  • the remote detection unit 10 since the remote detection unit 10 adopts the remote monitoring mode, the remote detection unit 10 judges the train type and the traveling situation more accurately, and can accurately control the start and stop of the inspection device 30 and the timing of emitting rays.
  • the remote detection unit 10 can identify the train type and the traveling situation early, and increase the information processing speed, so that the inspection device 30 can inspect the goods in the train in a comprehensive and timely manner, and avoid missing inspections.
  • step 102 specifically includes:
  • Step 201 when it is judged that the inspected train is coming, then judge whether there is a freight car in the inspected train, if there is, then execute step 202, otherwise execute step 203;
  • Step 202 Turn on the inspection device 30 for preparation
  • Step 203 Keep the inspection device 30 off.
  • steps 201-203 are executed by the radiation control module 40.
  • This embodiment not only enables the inspection equipment to enter the inspection state in time when the truck compartment passes by, but also can keep the inspection equipment 30 closed when there is no truck compartment, which can reduce the power consumption of the inspection equipment 30 and reduce the equipment loss.
  • step 102 specifically includes:
  • Step 301 In the state where the inspection device 30 is turned on, determine the type of the train passing the inspection device 30. If a freight car passes the inspection device 30, perform step 302; if the vehicle or passenger car passes the inspection device 30, then Go to step 303;
  • step 302 the inspection device 30 emits radiation for inspection
  • Step 303 Stop the inspection device 30 from emitting radiation or reduce the radiation emission dose.
  • steps 301-303 are executed by the radiation control module 40.
  • This embodiment emits a ray inspection cargo when it recognizes that a freight car in the train passes the inspection device 30, and can comprehensively inspect the cargo carried in the train, and stops emitting the ray when the locomotive or passenger car passes the inspection device 30, or Reducing the radiation emission dose can reduce the damage caused by radiation to personnel, and improve the safety of the inspection device 30 for train inspection.
  • step 102 specifically includes: when the traveling speed of the inspected train is reduced to a preset value or stopped, causing the inspection device 30 to stop emitting radiation or reducing the radiation emitting dose.
  • the purpose of this embodiment is to prevent people coming out of the train from being injured by radiation and improve the safety of the people.
  • the train safety inspection method of the present disclosure further includes:
  • Step 103 Adjust the scanning frequency of the inspection device 30 to match the traveling speed of the inspected train.
  • Step 103 is not shown in the figure and can be executed by the radiation control module 40, and can be adjusted at any time after the train appears in the video and between passing the inspection device 30.
  • the speed of the train travel is obtained through the video stream, and the scanning frequency of the inspection device 30 can be adjusted in real time to ensure that the scanned image is not distorted, so that the cargo situation inside the truck can be more clearly observed.
  • the train identification system and method of the present disclosure can remotely detect the presence or absence of train arrival, traveling speed, traveling direction, train type, etc., without the need to install sensors, detection devices, etc. farther away from the inspection equipment 30, which can effectively reduce Covers an area and avoids installing devices on rails.
  • the type of train can be judged multiple times and identified in real time, and for complex track conditions such as single track, double track, even multiple tracks, bends, turnouts, etc., the comprehensive judgment ability of the system can be improved, thereby improving the safety of the inspection equipment 30. At the same time, it reduces the impact of the train on the track due to bumps and other conditions on the sensor, providing a basis for the stable and reliable operation of the inspection device 30.

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  • Mechanical Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Biomedical Technology (AREA)
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Abstract

一种列车识别系统及其方法、列车安全检查系统及其方法，其中，列车识别系统包括：远程检测部件(10)，用于通过远程监测的方式获取被检列车的整体特征信息；识别模块(20)，用于根据获取的整体特征信息判断出被检列车的类型和/或行进情况。远程检测部件(10)可灵活地布置，通过远程监测，在列车由远及近行驶的过程中有多次识别机会，以提高识别准确性，并能提早进行识别以便及时给出结果；另外通过获取被检列车的整体特征信息，可全面地为判断列车的类型和/或行进情况提供依据，进一步提高识别的准确性，对不同的列车均有较好的适应性。

Description

列车识别系统及其方法、列车安全检查系统及其方法
本公开是以申请号为 201811293771.9，申请日为 2018年11月1日的中国申请为基础，并主张其优先权，该中国申请的公开内容在此作为整体引入本公开中。
技术领域
本公开涉及列车安全检查技术领域，尤其涉及一种列车识别系统及其方法、列车安全检查系统及其方法。
背景技术
在实际中的对列车的车型或行驶状况进行识别有非常重要的意义，可自动地获知通过列车的情况，例如可用于安全检查领域或维修领域等。
发明人所知晓的一种相关技术是在铁轨沿线设置多个磁钢传感器，通过磁钢检测列车相对速度及列车车轴位置以确定轴距，根据轴距的不同识别列车类型。但是此种识别方案需要将传感器安装在铁路上，占地大，对火车运行有一定的安全隐患，对低速火车响应能力差，而且传感器安装点受限、数量也有限制，这样检测点就有局限性，对于改装车辆，比如同一种轴距参数的车辆，改装为客户或是货车，就无法从轴距上区分。
发明人所知晓的另一种相关技术是利用线阵相机获得车辆侧面轮廓信息，以通过控制系统自动识别车辆类型。但是此种识别方案对于线阵相机的安装点也有一定的要求和限制，同一列车只能有一次检测机会，对于速度变化适应能力较差，占地大，采集图像数量大、处理速度慢，对于系统的处理能力要求高。
发明内容
本公开的实施例提供了一种列车识别系统及其方法、列车安全检查系统及其方法，能够提高对列车识别的灵活性。
为实现上述目的，本公开的实施例第一方面提供了一种列车识别系统，包括：
远程检测部件，用于通过远程监测的方式获取被检列车的整体特征信息；和
识别模块，用于根据获取的整体特征信息判断出被检列车的类型和/或行进情况。
在一些实施例中，被检列车的类型包括机车、货车、客车和/或工程车；或者被检列车的行进情况包括：有无列车到来、行进方向、行进路线和/或行进速度。
在一些实施例中，远程检测部件包括摄像头，用于拍摄被检列车的视频信息。
在一些实施例中，摄像头设有多个，各个摄像头具有不同的焦距，分别用于在列车处于不同距离范围时进行拍摄。
在一些实施例中，摄像头的拍摄角度、高度和/或焦距可调。
在一些实施例中，摄像头设有一个，拍摄的视频划分为不同区域以对应不同的轨道；或者摄像头设有多个，各个摄像头分别对应拍摄不同的轨道。
在一些实施例中，远程检测部件包括激光或雷达。
为实现上述目的，本公开的实施例第二方面提供了一种基于上述实施例列车识别系统的方法，包括：
远程检测部件通过远程监测的方式获取被检列车的整体特征信息；
识别模块根据获取的整体特征信息判断出被检列车的类型和/或行进情况。
在一些实施例中，识别模块根据获取的整体特征信息判断出被检列车的类型和/或行进情况的步骤包括：识别模块从获取的整体特征信息中提取列车的特征参数，以判断出被检列车行进速度；
其中，识别模块从获取的整体特征信息中提取列车的特征参数，以判断出被检列车行进速度的步骤具体包括：
在摄像头的视野范围内，沿着被检列车由远及近的方向选定第一位置和第二位置；
从视频中获得被检列车由第一位置到达第二位置的帧数和所需时间，得出视频中的被检列车由第一位置到达第二位置的帧数率；
将被检列车的帧数率与列车在预设行进速度下的帧数率进行比较，以得出被检列车的行进速度。
为实现上述目的，本公开的实施例第三方面提供了一种基于上述实施例列车识别系统的列车安全检查系统，包括：
检查设备，用于对被检列车进行安全检查；
上述各实施例的列车识别系统，设在邻近检查设备所在区域；和
辐射控制模块，用于根据识别模块判断出的被检列车的类型和/或行进情况控制检查设备的工作状态。
在一些实施例中，辐射控制模块用于在识别模块判断出即将到来的被检列车中存在货车车厢的情况下开启检查设备进行预备，在不存在货车车厢的情况下使检查设备保持关闭状态。
在一些实施例中，辐射控制模块用于在识别模块判断出有货车车厢通过检查设备的情况下使检查设备发出射线，并在识别模块判断出有机车或客车车厢通过检查设备，或者被检列车的行进速度减小至预设值或停止的情况下，使检查设备停止发出射线。
在一些实施例中，辐射控制模块用于调整检查设备的扫描频率与识别模块判断出的被检列车的行进速度相匹配。
在一些实施例中，列车识别系统集成设置在检查设备上。
为实现上述目的，本公开的实施例第四方面提供了一种列车安全检查方法，包括：
判断被检列车的类型和/或行进情况；
根据判断出的被检列车的类型和/或行进情况控制检查设备的工作状态。
在一些实施例中，根据判断出的被检列车的类型和/或行进情况控制检查设备的工作状态的步骤具体包括：
在判断出被检列车即将到来时，再判断被检列车中是否存在货车车厢，如果存在则开启检查设备进行预备，否则使检查设备保持关闭状态。
在一些实施例中，根据判断出的被检列车的类型和/或行进情况控制检查设备的工作状态的步骤具体包括：
在检查设备开启的状态下，判断通过检查设备的被检列车的车型，若有货车车厢通过检查设备，则使检查设备发出射线进行检查；若有机车或客车车厢通过检查设备，则使检查设备停止发出射线或减小射线发出剂量。
在一些实施例中，根据判断出的被检列车的类型和/或行进情况控制检查设备的工作状态的步骤具体包括：
在被检列车的行进速度减小至预设值或停止的情况下，使检查设备停止发出射线或减小射线发出剂量。
在一些实施例中，还包括：
调整检查设备的扫描频率与被检列车的行进速度相匹配。
基于上述技术方案，本公开一些实施例的列车识别系统，远程检测部件通过远程监测的方式获取被检列车的整体特征信息，可在列车轨道所在区域外灵活地布置远程检测部件，降低对设置位置的需求；而且通过远程监测，在列车由远及近行驶的过程中有多次识别机会，以提高识别准确性，并能提早进行识别以便及时给出结果；另外通过获取被检列车的整体特征信息，可全面地为判断列车的类型和/或行进情况提供依据，进一步提高识别的准确性，对不同的列车均有较好的适应性。
附图说明
此处所说明的附图用来提供对本公开的进一步理解，构成本申请的一部分，本公开的示意性实施例及其说明用于解释本公开，并不构成对本公开的不当限定。在附图中：
图1为本公开列车识别系统的一些实施例的模块组成示意图；
图2为本公开列车安全检查系统的一些实施例的模块组成示意图；
图3为本公开列车安全检查方法的一些实施例的流程示意图；
图4为本公开列车安全检查方法的另一些实施例的流程示意图。
具体实施方式
以下详细说明本公开。在以下段落中，更为详细地限定了实施例的不同方面。如此限定的各方面可与任何其他的一个方面或多个方面组合，除非明确指出不可组合。尤其是，被认为是优选的或有利的任何特征可与其他一个或多个被认为是优选的或有利的特征组合。
本公开中出现的“第一”、“第二”等用语仅是为了方便描述，以区分具有相同名称的不同组成部件，并不表示先后或主次关系。
在本公开的描述中，采用了“上”、“下”、“顶”、“底”、“前”、“后”、“内”和“外”等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本公开，而不是指示或暗示所指的装置必须具有特定的方位、以特定的方位构造和操控，因此不能理解为对本公开保护范围的限制。
如图1所示，本公开提供了一种列车识别系统，在一些实施例中，包括远程检测 部件10和识别模块20，远程检测部件10用于通过远程监测的方式获取被检列车的整体特征信息，包括列车的颜色或轮廓等。例如，可设在轨道宽度方向上位于列车外侧的区域，实现远距离监测。识别模块20用于根据获取的整体特征信息提取列车的特征参数，以判断出被检列车的类型和/或行进情况。根据识别模块20的判断结果，可对列车进行故障诊断、维修或安全检查等。
其中，被检列车的车型包括机车、货车、客车和/或工程车等特殊车型，此处的车型可以是列车的整体类型或者单个列车中各车厢的类型。对于不同的车型，对于故障诊断、维修或安全检查等后续工作的要求不同，因此快速准确判断车型可保证正确执行后续工作。
被检列车的行进情况包括：有无列车到来、行进方向、行进路线和/或行进速度。根据有无列车到来可实时控制工作设备的启停，并使设备的工作性能参数与列车行进方向、行进路线和/或行进速度相匹配。
本公开该实施例的列车识别系统与现有技术相比至少具备如下优点之一：
(1)远程检测部件10采用远程监测的方式，可在列车轨道所在区域外灵活地布置远程检测部件10，降低对设置位置的需求，能够在靠近列车识别系统对应的工作设备的区域布置安装，布局紧凑，占地面积小，维护方便。在选择安装场地时灵活度更大，不用考虑弯道、岔道和车站等情况。
而采用线阵相机或传感器只能在列车行驶到检测部件所在位置时才能进行检测，考虑信息处理所需时间，为了提早识别，检测部件只能与工作设备(例如检查设备)间隔一段距离设置，间隔距离需要根据列车行驶速度设定，且占地面积大，维护不方便。
(2)远程检测部件10采用远程监测的方式，在列车由远及近行驶的过程中有多次识别机会，以提高识别准确性，并能提早进行识别以便及时给出结果供工作设备使用，对于行进速度快的列车也具备较强的适应能力，可适用于不同行驶速度的列车。
而采用线阵相机或传感器为了提早识别，远程检测部件10只能与工作设备(例如检查设备)间隔一段距离设置，在列车提速后可能需要重新改变检测部件的位置。
(3)通过获取被检列车的整体特征信息，可全面地为判断列车的类型和/或行进情况提供依据，在列车差异较小且行进速度较快时也利于提高识别的准确性，对不同的列车均有很好的适应性。
而采用线阵相机或传感器只能在特定位置获得列车的局部信息，在列车外形差异小或者进行改造后难以获得准确的结果。
(4)通过获取被检列车的整体特征信息，无需进行列车信息的拼接或整合，有利于直接判断出列车的类型和/或行进情况，可提高信息处理速度，从而提高系统的识别能力。
而采用线阵相机则需要对采集的图像进行拼接，处理图像数量大，处理速度慢，响应能力差。
在一些实施例中，远程检测部件10包括摄像头，用于拍摄被检列车的视频信息，识别模块20用于从摄像头拍摄的视频信息中提取列车的特征参数，以判断出被检列车的类型和/或行进情况。在视频中可对整个列车和列车中的部分车厢的图像都可以进行识别判断。
通过视频可直接提取列车的关键特征参数，例如列车颜色、长度、高度和轴距等，列车识别系统可采用大量样本进行深度学习，以将表征被检列车的类型的关键特征参数进行匹配，从而确定被检列车的类型。在识别列车类型时，可使摄像头从合适的角度进行拍摄，而且为了提高判断准确性，可安装多个摄像头从多个不同角度拍摄，以综合反映列车各个角度的细节。
而且，通过视频中的图像可直观准确地判断出有无列车到来和行进方向，并直接判断出列车的行进路线，有效解决弯道和岔道等复杂轨道情况。
另外，通过视频中的图像变化可准确地获得被检列车的行进速度。具体地，在摄像头视野范围内由远及近的方向选定第一位置和第二位置，从视频中获得被检列车由第一位置到达第二位置的帧数和所需时间，得出视频中的列车由第一位置到达第二位置的帧数率。再将得到的帧数率与列车在预设行进速度下的帧数率进行比较，可得出被检列车的行进速度。
在摄像头视野范围内沿着列车的行进方向可以设置多个检测位置，任意两个检测位置均可以作为第一位置和第二位置实现速度检测，所以对于被检列车的速度检测可以连续、不间断地进行，同时还可以实现车辆方向的检测，比如停车、倒车等异常情况。
在一些实施例中，摄像头设有多个，多个摄像头设在同一区域，且具有不同的焦距，分别用于在列车相对于摄像头处于不同距离范围时进行拍摄，焦距大小与距离范 围的远近呈正比，以保证列车由远及近行驶过程中的视频拍摄质量，为识别模块20的准确判断提供基础。
通过安装不同焦距的摄像机，可对列车处于不同距离范围时进行拍摄，比如焦距小的摄像头近距离拍摄列车，焦距大的摄像头远程拍摄列车，焦距居中的摄像头拍摄处于中间距离位置的列车。比如10mm焦距内的摄像头拍摄工作设备区域范围内的列车，10-30mm焦距的摄像头拍摄中间距离范围，30mm焦距以上的摄像头对更远的地方进行监控。
每个摄像头均可以覆盖一定的范围，不同焦距的摄像头覆盖的范围也不同，只要多个摄像头实现由远及近的连续覆盖即可，无需整合各个摄像头的拍摄的视频。焦距最大的摄像头最早开始识别，之后是临近的，依次类推，只要摄像头范围内有火车，就一直识别。
通过使用不同焦距的摄像头，可以清楚地观察不同的距离范围，这样就不用在设备之外安装过多的其它设备来检测、观察当地的情况，只需将远程检测部件10都集中安装在工作设备区域内，可使远程检测部件10和工作设备整体结构更加紧凑，减少占用空间，易于维护。
在一些实施例中，摄像头的拍摄角度、高度和/或焦距可调。通过对摄像头拍摄角度的调整，可调节对列车的最佳拍摄角度，也可针对列车在多条并排铁轨上的位置进行调整；通过对摄像头拍摄高度的调整，可调节拍摄远点的位置，为列车类型和/或行进情况的识别留出足够的时间。通过对摄像头焦距的调整，可根据需要拍摄视频的距离范围。
通过对视频流的图像分析和识别，可判断是否有列车到来，在预设摄像头拍摄角度、高度、焦距等参数后，可按照前述方法确定第一位置和第二位置，以对列车的进行速度测量。
在一些实施例中，如果需要采用一套检查设备30对多条轨道进行检查，可采用两种方式。其一，摄像头设有一个，将拍摄的视频划分为不同区域以对应不同的轨道。其二，摄像头设有多个，各个摄像头分别对应拍摄不同的轨道，以对行驶于不同轨道上的列车进行检测和识别。
上述实施例中的远程检测部件10除了采用摄像头，还可以采用激光或雷达。其中，激光检测可以一定的频率进行扫描，利用激光测距的原理进行检测，以获取被检 列车的轮廓信息，从而匹配识别出列车类型，或判断列车行进情况。雷达检测是用电磁波发现目标被检列车并测定其空间位置，雷达发射电磁波对目标进行照射并接收其回波，由此可获得目标至电磁波发射点的距离、距离变化率(径向速度)、方位、高度等信息。
其次，本公开还提供了一种基于上述实施例所述列车识别系统的识别方法，在一些实施例中，包括：
远程检测部件10通过远程监测的方式获取被检列车的整体特征信息；
识别模块20根据获取的整体特征信息判断出被检列车的类型和/或行进情况。
在一些实施例中，识别模块20根据获取的整体特征信息判断出被检列车的类型和/或行进情况的步骤包括：识别模块20从获取的整体特征信息中提取列车的特征参数，以判断出被检列车行进速度。
其中，识别模块20从获取的整体特征信息中提取列车的特征参数，以判断出被检列车行进速度的步骤具体包括：
在摄像头视野范围内由远及近的方向选定第一位置和第二位置；
从视频中获得被检列车由第一位置到达第二位置的帧数和所需时间，得出视频中的被检列车由第一位置到达第二位置的帧数率；
将被检列车的帧数率与列车在预设行进速度下的帧数率进行比较，以得出被检列车的行进速度。
该实施例可通过视频中的图像变化可准确地获得被检列车的行进速度。
再次，本公开还提供了一种列车安全检查系统，如图2所示，包括检查设备30、辐射控制模块40和上述实施例的列车识别系统。其中，检查设备30用于对被检列车进行安全检查，在需要进行扫描检查时，使检查设备30中的射线源发出射线，以对通过的列车进行扫描检查，判断列车中的货物是否符合安全标准。列车识别系统设在邻近检查设备30所在区域，辐射控制模块40用于根据识别模块20判断出的被检列车的类型和/或行进情况控制检查设备30的工作状态。
在该实施例中，由于远程检测部件10采用远程监测的方式，因而可将远程检测部件10布置在邻近检查设备30所在区域，使设备整体布局紧凑，占地面积小，维护方便。在选择安装场地时灵活度更大，不用考虑弯道、岔道和车站等情况。而且，远程检测部件10对列车类型和行进情况的判断较为准确，可精确地控制检查设备30的 启停和发出射线时机。另外，远程检测部件10能够提早识别列车类型和行进情况，并提高信息处理速度，可使检查设备30全面及时地对列车中的货物进行检查，避免出现漏检。
而现有技术中采用线阵相机由于需要拼接图像，为了给提早识别，远程检测部件10只能与检查设备30间隔一段距离设置，使整个列车安全检查系统需要占据较大的空间，需要在不同地点分别维护。而且只能单次对列车进行识别，识别结果准确度不高，可能导致列出中的货物出现漏检。
在一些实施例中，辐射控制模块40用于在识别模块20判断出即将到来的被检列车中存在货车车厢的情况下开启检查设备30进行预备等准备工作，在不存在货车车厢的情况下使检查设备30保持关闭状态，例如，列车为单机车或是双机车等不包含车厢的结构，或是整列车都为客车等。
通过远程检测部件10的远程监测，可使识别模块20提前判断出即将到来的被检列车中是否存在货车车厢，如果存在则开启检查设备30，以提前进行预备，待货车车厢经过检查设备30时再发出射线，这样能够使检查状态设备在货车车厢经过时及时地处于检查状态。如果不存在货车车厢则使检查设备30保持关闭，降低检查设备30的功率消耗，并减少设备损耗。
在一些实施例中，辐射控制模块40用于在识别模块20判断出有货车车厢通过检查设备30的情况下使检查设备30发出射线，并在识别模块20判断出有机车或客车车厢通过检查设备30，或者被检列车的行进速度减小至预设值或停止的情况下，使检查设备30停止发出射线或减小射线发出剂量。
该实施例在识别出列车中有货车车厢通过检查设备30时就发出射线检查货物，可全面地对列车中承载的货物进行检查，在机车或客车车厢通过检查设备30时就停止发出射线，或减小射线发出剂量，能够减小射线对人员造成的伤害，提高检查设备30对于列车检查的安全性。另外，当列车行进速度减小至预设值或停止的情况下，为了防止稍后有人员从列车中出来，也可使检查设备30停止发出射线。
在一些实施例中，辐射控制模块40用于调整检查设备30的扫描频率与识别模块20判断出的被检列车的行进速度相匹配。通过视频流获得列车行进的速度，可对检查设备30的扫描频率进行实时调整，以保证扫描的图像不失真，从而更清楚地观察到货车内部的货物情况。
在一些实施例中，列车识别系统集成设置在检查设备30上。这样远程检测部件10无需占用额外的空间，设备布局紧凑、占地面积小，便于扫描检查设备30的布置、安装，而且可将列车安全检查系统作为整体的设备进行维护，在选择安装场地时灵活度更大，不用考虑弯道、岔道、车站等情况。另外，识别模块20可独立设置，也可与检查设备30自身的控制系统集成设置。
最后，本公开提供了一种基于上述列车识别系统或列车安全检查系统的检查方法，在一些实施例中，如图3所示，包括：
步骤101、判断被检列车的类型和/或行进情况；
步骤102、根据判断出的被检列车的类型和/或行进情况控制检查设备30的工作状态。
其中，步骤101可由识别模块20实时执行，步骤102可由辐射控制模块40执行。在该实施例中，由于远程检测部件10采用远程监测的方式，远程检测部件10对列车类型和行进情况的判断较为准确，可精确地控制检查设备30的启停和发出射线时机。另外，远程检测部件10能够提早识别列车类型和行进情况，并提高信息处理速度，可使检查设备30全面及时地对列车中的货物进行检查，避免出现漏检。
在一些实施例中，如图4所示，步骤102具体包括：
步骤201、在判断出被检列车即将到来时，再判断被检列车中是否存在货车车厢，如果存在则执行步骤202，否则执行步骤203；
步骤202、开启检查设备30进行预备；
步骤203、使检查设备30保持关闭状态。
其中，步骤201-203由辐射控制模块40执行。该实施例既能够使检查设备在货车车厢经过时及时地进入检查状态，而且可在不存在货车车厢的情况下使检查设备30保持关闭，可降低检查设备30的功率消耗，并减少设备损耗。
在一些实施例中，如图4所示，步骤102具体包括：
步骤301、在检查设备30开启的状态下，判断通过检查设备30的被检列车的车型，若有货车车厢通过检查设备30，则执行步骤302；若有机车或客车车厢通过检查设备30，则执行步骤303；
步骤302、使检查设备30发出射线进行检查；
步骤303、使检查设备30停止发出射线或减小射线发出剂量。
其中，步骤301-303由辐射控制模块40执行。该实施例在识别出列车中有货车车厢通过检查设备30时就发出射线检查货物，可全面地对列车中承载的货物进行检查，在机车或客车车厢通过检查设备30时就停止发出射线，或减小射线发出剂量，能够减小射线对人员造成的伤害，提高检查设备30对于列车检查的安全性。
在一些实施例中，步骤102具体包括：在被检列车的行进速度减小至预设值或停止的情况下，使检查设备30停止发出射线或减小射线发出剂量。该实施例的目的是防止稍后从列车中出来的人员受到射线伤害，提高人员安全性。
在一些实施例中，本公开的列车安全检查方法还包括：
步骤103、调整检查设备30的扫描频率与被检列车的行进速度相匹配。
步骤103在图中未示出，可由辐射控制模块40执行，可在列车在视频中出现后并在通过检查设备30之间随时进行调整。通过视频流获得列车行进的速度，可对检查设备30的扫描频率进行实时调整，以保证扫描的图像不失真，从而更清楚地观察到货车内部的货物情况。
由此，本公开的列车识别系统和方法能够远程检测有无列车到来、行进速度、行进方向和列车类型等，无需在离检查设备30较远的位置安装传感器、检测器件等，可有效减小占地面积，避免在铁轨上安装器件。而且对于列车类型能够多次、实时识别地进行判断，对于单轨、双轨、甚至多条轨道，弯道、岔道等复杂轨道情况，都能够提高系统的综合判断能力，从而提高检查设备30使用的安全性，同时减少火车在轨道上由于颠簸等情况对传感器产生的影响，为检查设备30稳定可靠运行提供基础。
以上对本公开所提供的一种列车识别系统及其方法、列车安全检查系统及其方法进行了详细介绍。本文中应用了具体的实施例对本公开的原理及实施方式进行了阐述，以上实施例的说明只是用于帮助理解本公开的方法及其核心思想。应当指出，对于本技术领域的普通技术人员来说，在不脱离本公开原理的前提下，还可以对本公开进行若干改进和修饰，这些改进和修饰也落入本公开权利要求的保护范围内。

Claims (19)

  1. 一种列车识别系统，包括：
    远程检测部件(10)，用于通过远程监测的方式获取被检列车的整体特征信息；和
    识别模块(20)，用于根据获取的整体特征信息判断出被检列车的类型和/或行进情况。
  2. 根据权利要求1所述的列车识别系统，其中，
    所述被检列车的类型包括机车、货车、客车和/或工程车；或者
    所述被检列车的行进情况包括：有无列车到来、行进方向、行进路线和/或行进速度。
  3. 根据权利要求1所述的列车识别系统，其中所述远程检测部件(10)包括摄像头，用于拍摄所述被检列车的视频信息。
  4. 根据权利要求3所述的列车识别系统，其中所述摄像头设有多个，各个所述摄像头具有不同的焦距，分别用于在列车处于不同距离范围时进行拍摄。
  5. 根据权利要求3所述的列车识别系统，其中所述摄像头的拍摄角度、高度和/或焦距可调。
  6. 根据权利要求3所述的列车识别系统，其中，
    所述摄像头设有一个，拍摄的视频划分为不同区域以对应不同的轨道；或者
    所述摄像头设有多个，各个所述摄像头分别对应拍摄不同的轨道。
  7. 根据权利要求1所述的列车识别系统，其中所述远程检测部件(10)包括激光或雷达。
  8. 一种基于权利要求1～7任一所述的列车识别系统的识别方法，包括：
    所述远程检测部件(10)通过远程监测的方式获取被检列车的整体特征信息；
    所述识别模块(20)根据获取的整体特征信息判断出被检列车的类型和/或行进情况。
  9. 根据权利要求8所述的列车识别方法，其中所述识别模块(20)根据获取的整体特征信息判断出被检列车的类型和/或行进情况的步骤包括：所述识别模块(20)从获取的整体特征信息中提取列车的特征参数，以判断出被检列车行进速度；
    其中，所述识别模块(20)从获取的整体特征信息中提取列车的特征参数，以判断出被检列车行进速度的步骤包括：
    在摄像头的视野范围内，沿着被检列车由远及近的方向选定第一位置和第二位置；
    从视频中获得被检列车由所述第一位置到达所述第二位置的帧数和所需时间，得出视频中的被检列车由所述第一位置到达第二位置的帧数率；
    将被检列车的帧数率与列车在预设行进速度下的帧数率进行比较，以得出被检列车的行进速度。
  10. 一种基于权利要求1～7任一所述的列车识别系统的列车安全检查方法，包括：
    判断所述被检列车的类型和/或行进情况；
    根据判断出的被检列车的类型和/或行进情况控制检查设备(30)的工作状态。
  11. 根据权利要求10所述的列车安全检查方法，其中根据判断出的被检列车的类型和/或行进情况控制检查设备(30)的工作状态的步骤具体包括：
    在判断出被检列车即将到来时，再判断被检列车中是否存在货车车厢，如果存在，则开启所述检查设备(30)进行预备，否则使所述检查设备(30)保持关闭状态。
  12. 根据权利要求10或11所述的列车安全检查方法，其中根据判断出的被检列车的类型和/或行进情况控制检查设备(30)的工作状态的步骤具体包括：
    在所述检查设备(30)开启的状态下，判断通过所述检查设备(30)的被检列车的车型，若有货车车厢通过所述检查设备(30)，则使所述检查设备(30)发出射线进行检查；若有机车或客车车厢通过所述检查设备(30)，则使所述检查设备(30)停止发出射线或减小射线发出剂量。
  13. 根据权利要求10或11所述的列车安全检查方法，其中根据判断出的被检列车的类型和/或行进情况控制检查设备(30)的工作状态的步骤具体包括：
    在所述被检列车的行进速度减小至预设值或停止的情况下，使所述检查设备(30)停止发出射线或减小射线发出剂量。
  14. 根据权利要求10所述的列车安全检查方法，还包括：
    调整所述检查设备(30)的扫描频率与所述被检列车的行进速度相匹配。
  15. 一种列车安全检查系统，包括：
    检查设备(30)，用于对被检列车进行安全检查；
    权利要求1～7任一所述的列车识别系统，设在邻近所述检查设备(30)所在区域；和
    辐射控制模块(40)，用于根据所述识别模块(20)判断出的被检列车的类型和/或行进情况控制所述检查设备(30)的工作状态。
  16. 根据权利要求15所述的列车安全检查系统，其中所述辐射控制模块(40)用于在所述识别模块(20)判断出即将到来的被检列车中存在货车车厢的情况下开启所述检查设备(30)进行预备，在不存在货车车厢的情况下使所述检查设备(30)保持关闭状态。
  17. 根据权利要求15所述的列车安全检查系统，其中所述辐射控制模块(40)用于在所述识别模块(20)判断出有货车车厢通过所述检查设备(30)的情况下使所述检查设备(30)发出射线，并在所述识别模块(20)判断出有机车或客车车厢通过所述检查设备(30)，或者所述被检列车的行进速度减小至预设值或停止的情况下，使所述检查设备(30)停止发出射线。
  18. 根据权利要求15所述的列车安全检查系统，其中所述辐射控制模块(40)用于调整所述检查设备(30)的扫描频率与所述识别模块(20)判断出的被检列车的行进速度相匹配。
  19. 根据权利要求15所述的列车安全检查系统，其中所述列车识别系统集成设置在所述检查设备(30)上。
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