CN209395825U - Train identification system and train safety inspection system - Google Patents

Abstract

The utility model relates to a kind of train identifying system and train safety check systems, wherein train identifying system includes: long-range detection part (10), for obtaining the global feature information of tested train by way of remotely monitoring；With recognition component (20), the type and/or traveling situation of tested train are judged for the global feature information according to acquisition.The utility model can neatly arrange long-range detection part, and by remotely monitoring, have multiple distinguishing opportunity during train travels from the distant to the near, to improve identification accuracy, and can be identified ahead of time to provide result in time；Additionally by the global feature information for obtaining tested train, it can comprehensively judge that the type of train and/or traveling situation provide foundation, further increase the accuracy of identification, to different trains well adapting to property.

Description

Train identification system and train safety inspection system

technical field

The invention relates to the technical field of train safety inspection, in particular to a train identification system and a train safety inspection system.

Background technique

In practice, it is of great significance to identify the vehicle type or running condition of the train, which can automatically know the situation of the passing train, for example, it can be used in the field of safety inspection or maintenance.

A related technology known to the inventor is to arrange a plurality of magnetic steel sensors along the rails, and to detect the relative speed of the train and the position of the axle of the train through the magnetic steel to determine the wheelbase, and to identify the type of train according to the difference in the wheelbase. However, this kind of identification scheme needs to install the sensor on the railway, which occupies a large area, has certain safety hazards to the train operation, has poor response ability to low-speed trains, and the sensor installation points are limited, and the number is also limited, so the detection points are limited. For modified vehicles, such as vehicles with the same wheelbase parameters, if they are converted into customers or trucks, they cannot be distinguished from the wheelbase.

Another related technology known to the inventor is to use a line-scan camera to obtain vehicle side profile information, so as to automatically identify the vehicle type through the control system. However, this identification 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, occupies a large area, has a large number of collected images, and slow processing speed. The processing capacity of the system is high.

Contents of the invention

Embodiments of the present invention provide a train identification system and a train safety inspection system, which can improve the flexibility of train identification.

In order to achieve the above object, the first aspect of the embodiment of the present invention provides a train identification system, including:

It includes a remote detection component and an identification element, the identification element is connected to the remote detection component, wherein the remote detection component is configured to obtain the overall characteristic information of the inspected train through remote monitoring, and the identification element is configured to obtain the overall characteristic information. Identify the type and/or travel situation of the inspected train.

Further, the type of the inspected train includes locomotives, freight cars, passenger cars and/or engineering vehicles; or the traveling condition of the inspected train includes: whether there is a train coming, traveling direction, traveling route and/or traveling speed.

Further, the remote inspection component includes a camera for taking video information of the inspected train.

Further, there are multiple cameras, and the multiple cameras have different focal lengths, and are respectively used for shooting when the train is in different distance ranges.

Further, the shooting angle, height and/or focal length of the camera are adjustable.

Furthermore, there is one camera, and the captured video is divided into different areas corresponding to different tracks; or there are multiple cameras, and the multiple cameras correspond to shooting different tracks respectively.

Further, the remote detection component includes laser or radar.

In order to achieve the above object, the third aspect of the embodiment of the present invention provides a train safety inspection system based on the train identification system of the above embodiment, including:

Inspection equipment, used for safety inspection of the inspected train;

The train identification system of each of the above embodiments is located in the area adjacent to the inspection equipment; and

The radiation control element is used to control the working state of the inspection equipment according to the type and/or running situation of the inspected train judged by the identification element.

Further, the radiation control element is used to turn on the inspection equipment for preheating when the identification element judges that there is a freight car in the upcoming train to be inspected, and keep the inspection equipment in a closed state when there is no freight car.

Further, the radiation control element is used to make the inspection equipment emit radiation when the identification element determines that a freight car passes the inspection equipment, and when the identification element determines that a locomotive or passenger carriage passes the inspection equipment, or the traveling speed of the inspected train When it is reduced to a preset value or stopped, the inspection equipment stops emitting rays.

Further, the radiation control element is used to adjust the scanning frequency of the inspection equipment to match the traveling speed of the inspected train judged by the identification element.

Further, the train identification system is integrated on the inspection equipment.

Based on the above-mentioned technical solution, in the train identification system of an embodiment of the present invention, the remote detection component obtains the overall characteristic information of the train to be detected through remote monitoring, and the remote detection component can be flexibly arranged outside the area where the train track is located, reducing the need for setting positions. needs; and through remote monitoring, there are multiple identification opportunities in the process of trains traveling from far to near, so as to improve the accuracy of identification, and can identify early in order to give timely results; in addition, by obtaining the overall characteristics of the inspected train The information can comprehensively provide a basis for judging the type and/or running situation of the train, further improve the accuracy of recognition, and have better adaptability to different trains.

Description of drawings

The accompanying drawings described here are used to provide a further understanding of the present invention and constitute a part of the application. The schematic embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations to the present invention. In the attached picture:

Fig. 1 is the module composition schematic diagram of an embodiment of the train identification system of the present invention;

Fig. 2 is a schematic diagram of the module composition of an embodiment of the train safety inspection system of the present invention.

Detailed ways

The present invention will be described in detail below. In the following paragraphs, different aspects of the embodiments are defined in more detail. Aspects so defined may be combined with any other aspect or aspects unless specifically stated otherwise. In particular, any feature considered to be preferred or advantageous may be combined with one or more other features which are considered to be preferred or advantageous.

Terms such as "first" and "second" appearing in the present invention are only for convenience of description, to distinguish different components with the same name, and do not indicate a sequence or a primary and secondary relationship.

In the description of the present invention, orientations or positional relationships indicated by "upper", "lower", "top", "bottom", "front", "rear", "inner" and "outer" are used based on the attached The orientation or positional relationship shown in the figure is only for the convenience of describing the present invention, and does not indicate or imply that the referred device 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 invention .

As shown in Figure 1, the present invention provides a kind of train recognition system, in one embodiment, comprises remote detection part 10 and identification element 20, and identification element 20 is connected with remote detection part 10, and remote detection part 10 is used for through remote The monitoring method obtains the overall feature information of the inspected train, including the color or outline of the train. For example, it can be installed in the area outside the train in the track width direction to realize remote monitoring. The identification component 20 is used to extract characteristic parameters of the train according to the obtained overall characteristic information, so as to identify and judge the type and/or running condition of the inspected train. According to the judgment result of the identification element 20, fault diagnosis, maintenance or safety inspection can be performed on the train. Wherein, the identification element 20 may adopt a hardware identification circuit or a PLC control element and other devices.

Wherein, the vehicle type of the inspected train includes special vehicle types such as locomotives, freight cars, passenger cars and/or engineering vehicles, and the vehicle type here can be the overall type of the train or the type of each carriage in a single train. For different models, there are different requirements for follow-up work such as fault diagnosis, maintenance or safety inspection, so quickly and accurately judging the model can ensure the correct execution of follow-up work.

The traveling situation of the inspected train includes: whether there is a train coming, traveling direction, traveling route and/or traveling speed. The start and stop of the working equipment can be controlled in real time according to the arrival of the train, and the working performance parameters of the equipment can be matched with the train's traveling direction, traveling route and/or traveling speed.

Compared with the prior art, the train identification system of this embodiment of the present invention has at least one of the following advantages:

(1) The remote detection component 10 adopts a remote monitoring method, and the remote detection component 10 can be flexibly arranged outside the area where the train track is located, reducing the demand for setting locations, and can be arranged and installed in an area close to the corresponding working equipment of the train identification system, Compact layout, small footprint, easy maintenance. There is greater flexibility in choosing the installation site, regardless of conditions such as curves, forks and stations.

However, the use of line array cameras or sensors can only be detected when the train travels to the position of the remote detection component 10. Considering the time required for information processing, in order to identify early, the remote detection component 10 can only be separated from the working equipment (such as inspection equipment) One distance is set, and the interval distance needs to be set according to the speed of the train, and it occupies a large area and is inconvenient to maintain.

(2) The remote detection part 10 adopts the mode of remote monitoring, and there are multiple identification opportunities in the process of train traveling from far to near, so as to improve the identification accuracy, and can identify in advance so that the results can be given in time for the working equipment to use, It also has strong adaptability to fast-moving trains, and can be applied to trains with different speeds.

In order to identify early by using a line array camera or sensor, 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 remote detection unit 10 may need to be changed after the train speeds up.

(3) By obtaining the overall characteristic information of the inspected train, it can comprehensively provide a basis for judging the type and/or running situation of the train, and it is also beneficial to improve the accuracy of recognition when the trains have small differences and fast moving speeds. The trains have good adaptability.

However, the use of line array cameras or sensors can only obtain local information of the train at a specific location, and it is difficult to obtain accurate results when the difference in the shape of the train is small or after the transformation.

(4) By obtaining the overall characteristic information of the inspected train, it is not necessary to splicing or integrating the train information, which is beneficial to directly determine the type and/or running situation of the train, and can improve the information processing speed, thereby improving the recognition ability of the system.

However, the use of line array cameras requires splicing of the collected images, a large number of processed images, slow processing speed, and poor responsiveness.

In some embodiments, the remote detection component 10 includes a camera for taking video information of the inspected train, and the identification element 20 is used for extracting the characteristic parameters of the train from the video information taken by the camera to determine the type and type of the inspected train. /or travel conditions. In the video, the images of the whole train and some carriages in the train can be recognized and judged.

The key characteristic parameters of the train can be directly extracted from the video, such as train color, length, height and wheelbase, etc. The train recognition system can use a large number of samples for deep learning to match the key characteristic parameters of the type of the inspected train to determine The type of train being inspected. When identifying the type of train, the camera can be used to shoot from a suitable 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.

Moreover, through the images in the video, it is possible to intuitively and accurately judge whether there is a train coming and the direction of travel, and directly judge the travel route of the train, effectively solving complex track conditions such as curves and forks.

In addition, the travel speed of the inspected train can be accurately obtained through the image changes in the video. Specifically, select the first position and the second position from far to near within the field of view of the camera, obtain the number of frames and the required time for the inspected train to reach the second position from the first position from the video, and obtain the video The frame rate at which the train in the train travels from the first location to the second location. Then, comparing the obtained frame rate with the frame rate of the train at the preset traveling speed, the traveling speed of the inspected train can be obtained.

Multiple detection positions can be set along the traveling direction of the train within the field of view of the camera, and any two detection positions can be used as the first position and the second position to realize speed detection, so the speed detection of the inspected train can be continuous and uninterrupted At the same time, it can also detect the direction of the vehicle, such as parking, reversing and other abnormal situations.

In some embodiments, there are multiple cameras, and multiple cameras are set in the same area and have different focal lengths, which are respectively used for shooting when the train is in different distance ranges relative to the cameras, and the focal length is positive to the distance between the cameras. ratio, to ensure the video shooting quality of the train moving from far to near, and provide a basis for the accurate judgment of the recognition element 20.

By installing cameras with different focal lengths, the train can be photographed at different distances. For example, a camera with a small focal length can photograph the train at a close distance, a camera with a large focal length can photograph the train at a long distance, and a camera with a medium focal length can photograph the train at an intermediate distance. For example, a camera with a focal length of 10mm shoots trains within the working equipment area, a camera with a focal length of 10-30mm shoots a range of intermediate distances, and a camera with a focal length of 30mm or more monitors farther places.

Each camera can cover a certain range, and cameras with different focal lengths can also cover different ranges. As long as multiple cameras can achieve continuous coverage from far to near, there is no need to integrate the videos shot by each camera. The camera with the largest focal length starts to recognize it first, and then it is close, and so on. As long as there is a train within the range of the camera, it will always be recognized.

By using cameras with different focal lengths, different distance ranges can be clearly observed, so that there is no need to install too many other devices outside the device to detect and observe the local situation, and only need to install the remote detection components 10 centrally on the working device In the region, the overall structure of the remote detection component 10 and the working equipment can be made more compact, which reduces the occupied space and is easy to maintain.

Further, the shooting angle, height and/or focal length of the camera are adjustable. By adjusting the shooting angle of the camera, the best shooting angle of 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 far point of the shooting can be adjusted for Allow sufficient time for identification of train type and/or travel conditions. By adjusting the focal length of the camera, the distance range of the video can be shot according to the needs.

Through the image analysis and recognition of the video stream, it can be judged whether there is a train coming. After the camera shooting angle, height, focal length and other parameters are preset, the first position and the second position can be determined according to the aforementioned method to determine the speed of the train. Measurement.

In some embodiments, if a set of inspection equipment 30 needs to be used to inspect multiple tracks, two methods can be used. First, the camera is equipped with a camera that divides the captured video into different areas corresponding to different tracks. Second, a plurality of cameras are provided, and the plurality of cameras correspond to photographing different tracks respectively, so as to detect and identify trains running on different tracks.

In addition to the camera, the remote detection component 10 in the above embodiment may also use laser or radar. Among them, laser detection can be scanned at a certain frequency, and the principle of laser ranging is used for detection to obtain the outline information of the inspected train, so as to match and identify the type of train, or judge the progress of the train. Radar detection is to use electromagnetic waves to find the target train and measure its spatial position. The radar emits electromagnetic waves to irradiate the target and receive its echo, so that the distance from the target to the electromagnetic wave emission point, the distance change rate (radial velocity), and the distance change rate (radial velocity) can be obtained. location, altitude, etc.

Secondly, the present invention also provides a recognition method based on the train recognition system described in the above embodiments, in one embodiment, including:

The remote detection component 10 obtains the overall feature information of the inspected train by means of remote monitoring;

The recognition component 20 judges the type and/or travel situation of the inspected train according to the acquired overall feature information.

Further, the identification component 20 extracts the characteristic parameters of the train from the obtained overall characteristic information, so as to determine the speed of the train to be inspected. The step specifically includes:

Select the first position and the second position from far to near within the field of view of the camera;

Obtain the number of frames and the required time for the inspected train to arrive at the second location from the first position from the video, and obtain the frame rate of the inspected train in the video from the first location to the second location;

The frame rate of the inspected train is compared with the frame rate of the train at a preset travel speed to obtain the travel speed of the inspected train.

In this embodiment, the travel speed of the inspected train can be accurately obtained through image changes in the video.

Again, the present invention also provides a kind of train safety inspection system, as shown in Figure 2, comprises inspection equipment 30, radiation control element 40 and the train identification system of above-mentioned embodiment, radiation control element 40 and inspection equipment 30 and identification element 20 connect. Wherein, the inspection equipment 30 is used to carry out safety inspection on the train to be inspected. When scanning inspection is required, the radiation source in the inspection equipment 30 is made to emit radiation to scan and inspect the passing train to determine whether the goods in the train meet the safety requirements. standard. The train identification system is set in the area adjacent to the inspection equipment 30 , and the radiation control element 40 is used to control the working state of the inspection equipment 30 according to the type and/or running condition of the inspected train judged by the identification element 20 . Wherein, the radiation control element 40 may adopt a hardware radiation control circuit or a PLC control element and other devices.

In this embodiment, since the remote detection unit 10 adopts a remote monitoring method, the remote detection unit 10 can be arranged in the area adjacent to the inspection equipment 30, so that the overall layout of the equipment is compact, the floor space is small, and the maintenance is convenient. There is greater flexibility in choosing the installation site, regardless of conditions such as curves, forks and stations. Moreover, the remote detection component 10 can accurately judge the type of the train and the running situation, and can accurately control the start and stop of the inspection equipment 30 and the timing of emitting rays. In addition, the remote detection component 10 can identify the type of train and the running situation in advance, and improve the information processing speed, so that the inspection equipment 30 can comprehensively and timely inspect the goods in the train to avoid missing inspections.

However, in the prior art, line array cameras need to be spliced, and in order to recognize early, the remote detection unit 10 can only be set at a certain distance from the inspection equipment 30, so that the entire train safety inspection system needs to occupy a larger space and needs to be installed in different locations. The locations are maintained separately. Moreover, the train can only be identified once, and the accuracy of the identification result is not high, which may lead to missing inspection of the listed goods.

In some embodiments, the radiation control element 40 is used to turn on the inspection equipment 30 to perform preheating and other preparatory work when the identification element 20 determines that there is a freight car in the upcoming train to be inspected. The inspection equipment 30 is kept closed, for example, the train is a structure that does not include a carriage such as a single locomotive or a double locomotive, or the entire train is a passenger car.

Through the remote monitoring of the remote detection component 10, the identification element 20 can be judged in advance whether there is a truck compartment in the upcoming inspected train, and if there is, the inspection device 30 is turned on to preheat in advance, and the truck compartment passes through the inspection device 30 When the ray is emitted, the inspection state equipment can be in the inspection state in time when the truck compartment passes by. Keeping the inspection device 30 off if no truck bed is present reduces the power consumption of the inspection device 30 and reduces equipment wear and tear.

In some embodiments, the radiation control element 40 is used to cause the inspection device 30 to emit rays when the identification element 20 determines that a truck compartment passes the inspection device 30, and when the identification element 20 determines that a locomotive or a passenger car compartment passes the inspection device 30, or when the travel speed of the inspected train decreases to a preset value or stops, the inspection device 30 stops emitting radiation or reduces the radiation dose.

In this embodiment, when it is recognized that there is a freight car in the train passing the inspection device 30, it will emit radiation to inspect the goods, which can comprehensively inspect the goods carried in the train, and stop emitting the radiation when the locomotive or passenger carriage passes the inspection device 30, or Reducing the emitted dose of radiation can reduce the damage caused by radiation to personnel, and improve the safety of the inspection equipment 30 for train inspection. In addition, when the speed of the train decreases to a preset value or stops, in order to prevent people from getting out of the train later, the inspection device 30 can also stop emitting rays.

In some embodiments, the radiation control element 40 is used to adjust the scanning frequency of the inspection device 30 to match the traveling speed of the inspected train judged by the identification element 20 . The speed of the train 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 goods inside the truck can be observed more clearly.

In some embodiments, the train identification system is integrated on the inspection device 30 . In this way, the remote detection component 10 does not need to take up extra space, the equipment layout is compact, and the floor space is small, which is convenient for the arrangement 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 larger, and there is no need to consider the conditions such as curves, forks, stations, etc. In addition, the identification element 20 can be set independently, and can also be integrated with the control system of the inspection device 30 itself.

Finally, the present invention provides an inspection method based on the above-mentioned train identification system or train safety inspection system, in one embodiment, including:

Step 101, judging the type and/or running situation of the checked train;

Step 102: Control the working state of the inspection equipment 30 according to the determined type and/or travel situation of the inspected train.

Wherein, step 101 may be performed by the identification component 20 in real time, and step 102 may be performed by the radiation control component 40 . In this embodiment, since the remote detection unit 10 adopts a remote monitoring method, the remote detection unit 10 can accurately determine the type of train and the running situation, and can accurately control the start and stop of the inspection device 30 and the timing of emitting rays. In addition, the remote detection component 10 can identify the type of train and the running situation in advance, and improve the information processing speed, so that the inspection equipment 30 can comprehensively and timely inspect the goods in the train to avoid missing inspections.

In some embodiments, step 102 specifically includes:

Step 201, when it is judged that the inspected train is about to come, then judge whether there is a freight car in the inspected train, if there is, execute step 202, otherwise execute step 203;

Step 202, turn on the inspection device 30 for preheating;

Step 203, keeping the inspection device 30 in a closed state.

Wherein, steps 201-203 are performed by the radiation control element 40 . This embodiment can not only make the inspection state equipment in the inspection state in time when the truck compartment passes by, but also keep the inspection device 30 closed when there is no truck compartment, reduce the power consumption of the inspection device 30, and reduce equipment loss.

In some embodiments, step 102 specifically includes:

Step 301, in the state where the inspection device 30 is turned on, determine the type of train that has passed the inspection device 30, if there is a freight car that passes the inspection device 30, then perform step 302; if an locomotive or passenger car passes the inspection device 30, then perform step 303 ;

Step 302, make the inspection equipment 30 emit radiation for inspection;

Step 303, stop the inspection device 30 from emitting radiation or reduce the dose of radiation emitted.

Wherein, steps 301-303 are performed by the radiation control element 40 . In this embodiment, when it is recognized that there is a freight car in the train passing the inspection device 30, it will emit radiation to inspect the goods, which can comprehensively inspect the goods carried in the train, and stop emitting the radiation when the locomotive or passenger carriage passes the inspection device 30, or Reducing the emitted dose of radiation can reduce the damage caused by radiation to personnel, and improve the safety of the inspection equipment 30 for train inspection.

In some embodiments, step 102 specifically includes: when the traveling speed of the inspected train decreases to a preset value or stops, stopping the inspection device 30 from emitting radiation or reducing the emitted radiation dose. The purpose of this embodiment is to prevent the personnel coming out of the train later from being injured by radiation, so as to improve the safety of personnel.

In some embodiments, the train safety inspection method of the present invention also includes:

Step 103, adjusting 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, but can be performed by the radiation control unit 40 , and can be adjusted at any time after the train appears in the video and passes through the inspection device 30 . The speed of the train 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 goods inside the truck can be observed more clearly.

Thus, the train identification system and method of the present invention can remotely detect the arrival of a train, its traveling speed, its traveling direction, and its type, without installing sensors, detection devices, etc. Small footprint, to avoid installing devices on rails. Moreover, the train type can be judged repeatedly and in real time, and the comprehensive judgment ability of the system can be improved for single-track, double-track, or even multiple tracks, curves, sideways and other complex track conditions, thereby improving the safety of the inspection equipment 30 used. and at the same time reduce 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 .

The train identification system and the train safety inspection system provided by the present invention have been introduced in detail above. In this paper, specific examples are used to illustrate the principles and implementation modes of the present invention, and the descriptions of the above examples are only used to help understand the method and core idea of the present invention. It should be pointed out that for those skilled in the art, without departing from the principle of the present invention, some improvements and modifications can be made to the present invention, and these improvements and modifications also fall within the protection scope of the claims of the present invention.

Claims (12)

1. A train identification system, characterized in that it comprises a remote detection component (10) and an identification element (20), and the identification element (20) is connected with the remote detection component (10), wherein the remote detection The component (10) is configured to obtain the overall characteristic information of the inspected train through remote monitoring, and the identification element (20) is configured to identify the type and type of the inspected train when the overall characteristic information is obtained. /or travel conditions. 2. The train identification system according to claim 1, characterized in that, The type of the inspected train includes locomotives, freight cars, passenger cars and/or engineering vehicles; or The traveling condition of the inspected train includes: whether there is a train coming, traveling direction, traveling route and/or traveling speed. 3. The train identification system according to claim 1, characterized in that the remote detection component (10) includes a camera configured to capture video information of the inspected train. 4 . The train identification system according to claim 3 , wherein the cameras are provided with a plurality of cameras with different focal lengths, and are respectively configured to take pictures when the train is in different distance ranges. 5. The train identification system according to claim 3, characterized in that, the shooting angle, height and/or focal length of the camera are adjustable. 6. The train identification system according to claim 3, characterized in that, The camera is provided with one, and the captured video is divided into different areas to correspond to different tracks; or There are multiple cameras, and the multiple cameras respectively correspond to shooting different tracks. 7. The train identification system according to claim 1, characterized in that the remote detection component (10) comprises laser or radar. 8. A train safety inspection system, characterized in that it comprises: An inspection device (30), configured to perform a safety inspection on the inspected train; The train identification system according to any one of claims 1 to 7, which is located in an area adjacent to the inspection equipment (30); and The radiation control element (40) is configured to control the working state of the inspection equipment (30) according to the type and/or running situation of the inspected train identified by the identification element (20). 9. The train safety inspection system according to claim 8, characterized in that, the radiation control element (40) is configured to recognize that there is a freight car in the upcoming inspected train by the identification element (20). The inspection device (30) is turned on for preheating under normal circumstances, and the inspection device (30) is kept closed under the absence of a truck compartment. 10. The train safety inspection system according to claim 8, characterized in that, the radiation control element (40) is configured to identify a freight car passing through the inspection device (30) when the identification element (20) recognizes Under the situation that makes described inspection equipment (30) send out ray, and when described identification element (20) judges locomotive or passenger car carriage passes described inspection equipment (30), or the travel speed of described inspected train reduces When reaching a preset value or stopping, the inspection device (30) stops emitting rays. 11. The train safety inspection system according to claim 8, characterized in that, the radiation control element (40) is configured to adjust the scanning frequency of the inspection device (30) and the identification element (20) to identify The travel speed of the inspected train matches. 12. The train safety inspection system according to claim 8, characterized in that the train identification system is integrated on the inspection device (30).