阅读说明：本技术 一种铁路道口障碍物检测的方法 (Method for detecting barrier at railway crossing ) 是由 柳霞 许文博 袁嘉琦 赵雷朕 赵锐 马星 高举 于 2020-05-22 设计创作，主要内容包括：本发明涉及一种铁路道口障碍物检测的方法,其特征是：至少包括获取平交道口(1)的视频采集单元(2),火车离道口的距离传感单元(3),火车离道口的方向行驶的速度传感单元(4)和处理单元(5),处理单元(5)与视频采集单元(2)、距离传感单元(3),速度传感单元(4)电连接,用于获取平交道口(1)的视频信息、火车离道口的距离信息,火车离道口的方向行驶速度信息,处理单元(5)依据获取平交道口(1)的视频信息、火车离道口的距离信息,火车离道口的方向行驶速度信息的状态,输出提示信息和控制栏木(6)上升和下降。这种铁路道口障碍物检测的方法,可以保证通过铁路道口行人、机车安全和列车行驶安全。(The invention relates to a method for detecting barriers at a railway crossing, which is characterized by comprising the following steps: the system at least comprises a video acquisition unit (2) for acquiring a level crossing (1), a distance sensing unit (3) of a train from the crossing, a speed sensing unit (4) and a processing unit (5) of the train running in the direction from the crossing, wherein the processing unit (5) is electrically connected with the video acquisition unit (2) and the distance sensing unit (3), the speed sensing unit (4) is electrically connected and used for acquiring video information of the level crossing (1), distance information of the train from the crossing and running speed information of the train in the direction from the crossing, and the processing unit (5) outputs prompt information and controls the rise and fall of a barrier (6) according to the state of the running speed information of the train from the direction from the crossing, wherein the video information of the level crossing (1), the distance information of the train from the crossing and the running speed information of the train in the direction from the crossing. The method for detecting the barrier at the railway crossing can ensure the safety of pedestrians, locomotives and the running safety of trains passing through the railway crossing.)

1. A method for detecting barriers at a railway crossing is characterized by comprising the following steps: the system at least comprises a video acquisition unit (2) for acquiring a level crossing (1), a distance sensing unit (3) of a train from the crossing, a speed sensing unit (4) and a processing unit (5) of the train running in the direction from the crossing, wherein the processing unit (5) is electrically connected with the video acquisition unit (2) and the distance sensing unit (3), the speed sensing unit (4) is electrically connected and used for acquiring video information of the level crossing (1), distance information of the train from the crossing and running speed information of the train in the direction from the crossing, and the processing unit (5) outputs prompt information and controls the rise and fall of a barrier (6) according to the state of the running speed information of the train from the direction from the crossing, wherein the video information of the level crossing (1), the distance information of the train from the crossing and the running speed information of the train in the direction from the crossing.

2. The method of claim 1, wherein the step of detecting the obstacle at the railroad crossing comprises the steps of: the processing unit (5) outputs prompt information and controls the barrier (6) to ascend and descend according to the state of video information of the road junction (1), distance information of a train from the road junction and running speed information of the direction of the train from the road junction, and comprises the following steps:

the method comprises the steps of obtaining distance information of a train from a crossing, obtaining running speed information of the train from the crossing, determining time of the train to a railway crossing (1) according to the information, processing image change of the obtained railway crossing (2) according to the time, determining whether the information is sent to a locomotive control center according to a processing result, when the train passes through the railway crossing (1) within the time T, controlling a barrier (6) to descend when the image obtained by a video acquisition unit (2) is the same as a safety image mode, and when the train passes through the railway crossing (1) within the time T, outputting prompt information to the railway crossing (1) and sending the information to the locomotive control center when the image obtained by the video acquisition unit (2) is different from the safety image mode.

3. The method of claim 2, wherein the step of detecting the obstacle at the railroad crossing comprises the steps of: the safety image is an image obtained by taking the railway track as the center and two side railings as the boundaries, and no moving target body image crossed with the railway track is arranged in the image.

4. The method of claim 2, wherein the step of detecting the obstacle at the railroad crossing comprises the steps of: the safety image is an image obtained by taking the railway track as the center and two side railings as the boundaries, the image is image information obtained at the time before the railings rise when a train passes through the flat crossing gate (1), and no moving target body image crossed with the railway track exists in the image at the time.

5. The method of claim 2, wherein the step of detecting the obstacle at the railroad crossing comprises the steps of: the information is sent to a locomotive control center, and the information sent by the processing unit (5) comprises the delay alarm time of 6 s;

the delay alarm time is calculated according to the following formula:

T=

l₁-distance, m, of crossing signals to railway clearance;

l₂-the distance between two railway limits, m;

v-the prescribed minimum speed of a non-motor vehicle passing through the crossing, calculated at 5 km/h;

the prescribed minimum speed of the motor vehicle through the crossing, calculated at 10km/h, notes: when driving motor vehicles and non-motor vehicles on the road side, it should be calculated as the lowest speed of the non-motor vehicles through the crossing:

T=≈6s。

6. the method of claim 1, wherein the step of detecting the obstacle at the railroad crossing comprises the steps of: the distance sensing unit (3) is given by GPS positioning on the train, and the speed sensing unit (4) is given by GPS and a timer through calculation.

7. The method of claim 1, wherein the step of detecting the obstacle at the railroad crossing comprises the steps of: the distance sensing units (3) are laser or sound wave sensors arranged at two ends of a forward train, the speed sensing units (4) are sound wave detection heads arranged on railway sleepers, the position of the train is determined according to the laser or sound wave sensors, and train movement information is obtained according to the sound wave detection heads.

Technical Field

The invention belongs to a railway crossing used in the rail transit industry, is suitable for safety protection of the railway crossing, and particularly relates to a method for detecting barriers at the railway crossing.

Background

At present, each city has a plurality of level crossings, when a train passes through, people flow and vehicle flow are limited by falling down crossing gates, but various emergency situations can not be avoided sometimes. If the running train can receive the alarm information that the front crossing has the barrier at the proper distance from the crossing, and thus take safety precaution measures, the probability of crossing traffic accidents can be greatly reduced. Therefore, the barrier video detection system is additionally arranged at the railway crossing, so that the barrier of the crossing can be detected in real time, and the safety of the railway crossing can be improved.

Disclosure of Invention

The invention provides a method for detecting barriers at a railway crossing, which is used for ensuring the safety of pedestrians, locomotives and the running safety of trains passing through the railway crossing.

In order to solve the above problems, the present invention is achieved as follows, and relates to a method for detecting an obstacle at a railroad crossing, the method comprising: the system at least comprises a video acquisition unit for acquiring a level crossing, a distance sensing unit for a train to get away from the crossing, a speed sensing unit and a processing unit for the train to go in the direction of getting away from the crossing, wherein the processing unit is electrically connected with the video acquisition unit and the distance sensing unit and is used for acquiring video information of the level crossing, distance information of the train to get away from the crossing and speed information of the train to go in the direction of getting away from the crossing, and the processing unit outputs prompt information and controls the rise and fall of a barrier according to the state of the video information of the level crossing, the distance information of the train to get away from the crossing and the speed information of the train to go in the direction of getting away from the crossing.

Further, the processing unit outputs prompt information and controls the rising and falling of the barrier according to the state of the video information of the crossing, the distance information of the train leaving the crossing and the running speed information of the direction of the train leaving the crossing, and comprises the following steps:

the method comprises the steps of obtaining distance information of a train from a crossing, obtaining running speed information of the train from the crossing, determining time of the train to the crossing according to the information, processing image change of the obtained crossing according to the time, determining whether to send the information to a locomotive control center according to a processing result, when the train passes through the crossing within the time T, comparing an image obtained by a video acquisition unit with a safety image mode, controlling the barrier to descend, when the train passes through the crossing within the time T, comparing the image obtained by the video acquisition unit with the safety image mode, outputting prompt information to the crossing, and sending the information to the locomotive control center.

Further, the safety image is an image obtained by taking the railway track as the center and two side railings as the boundaries, and no moving object image crossed with the railway track exists in the image.

Furthermore, the safety image is an image obtained by taking the railway track as the center and two side railings as boundaries, the image is image information obtained at the time before the railings rise when the train passes through the level crossing, and no moving target body image crossing the railway track exists in the time image.

Further, the information is sent to the locomotive control center, and the information sent by the processing unit comprises the delay alarm time of 6 s.

Further, the delay alarm time is calculated according to the following formula:

T=

l₁-distance, m, of crossing signals to railway clearance;

l₂-the distance between two railway limits, m;

v-the prescribed minimum speed of a non-motor vehicle passing through the crossing, calculated at 5 km/h;

the prescribed minimum speed of the motor vehicle through the crossing, calculated at 10km/h, notes: when driving motor vehicles and non-motor vehicles on the road side, it should be calculated as the lowest speed of the non-motor vehicles through the crossing:

T=≈6s

the invention has the advantages that: the video image processing detection mode is adopted, the stability is high, the detection area is large, and more sensors and peripheral circuits are not needed. The reliability of the equipment is emphasized in the selection of the equipment, and the safe and reliable operation of the whole system can be ensured.

The invention is further described below with reference to the drawings.

Drawings

FIG. 1 is a block diagram of a system according to embodiment 1 of the present invention;

in the figure: 1. a level crossing; 2. a video acquisition unit; 3. a distance sensing unit; 4. a speed sensing unit; 5. a processing unit; 6. a control gate.

Detailed Description

To further explain the technical means and effects of the present invention adopted to achieve the intended purpose, the following detailed description of the embodiments, structural features and effects of the present invention will be made with reference to the accompanying drawings and examples.

Example 1

As shown in fig. 1, the present invention provides a method for detecting obstacles at a railroad crossing, which is characterized in that: the system at least comprises a video acquisition unit 2 for acquiring a level crossing 1, a distance sensing unit 3 of a train from the crossing, a speed sensing unit 4 and a processing unit 5 of the train running in the direction from the crossing, wherein the processing unit 5 is electrically connected with the video acquisition unit 2 and the distance sensing unit 3, the speed sensing unit 4 is used for acquiring video information of the level crossing 1, distance information of the train from the crossing and running speed information of the train in the direction from the crossing, and the processing unit 5 outputs prompt information and controls the barrier 6 to ascend and descend according to the state of the video information of the level crossing 1, the distance information of the train from the crossing and the running speed information of the train in the direction from the crossing.

The processing unit 5 outputs prompt information and controls the barrier 6 to ascend and descend according to the state of the video information of the road junction 1, the distance information of the train leaving the road junction and the running speed information of the direction of the train leaving the road junction, and comprises the following steps:

the method comprises the steps of obtaining distance information of a train from a crossing, obtaining running speed information of the train from the crossing, determining time of the train to the crossing 1 according to the information, processing image change of the obtained crossing 1 according to the time, determining whether the information is sent to a locomotive control center according to a processing result, when the train passes through the crossing 1 within the time T, controlling a barrier 6 to descend when the image obtained by a video acquisition unit 2 is the same as a safety image mode, and when the train passes through the crossing 1 within the time T, outputting prompt information to the crossing 1 when the image obtained by the video acquisition unit 2 is different from the safety image mode, and sending the information to the locomotive control center.

The distance sensing unit 3 is given by GPS positioning on the train, and the speed sensing unit 4 is given by GPS and a timer through calculation.

The safety image is an image obtained by taking the railway track as the center and two side railings as the boundaries, and no moving target body image crossed with the railway track is arranged in the image.

The safety image is an image obtained by taking the rail as the center and the railings on the two sides as the boundaries, and the image is image information obtained immediately before the railings rise when a train passes through the level crossing 1. There is no moving object image intersecting the railroad track in this time image.

The information is sent to the locomotive control center, and the information sent by the processing unit 5 comprises the delay alarm time of 6 s.

The delay alarm time is calculated according to the following formula:

T=

l₁-distance, m, of crossing signals to railway clearance;

l₂-the distance between two railway limits, m;

v-the prescribed minimum speed of a non-motor vehicle passing through the crossing, calculated at 5 km/h;

the prescribed minimum speed of the motor vehicle through the crossing, calculated at 10km/h, notes: when driving motor vehicles and non-motor vehicles on the road side, it should be calculated as the lowest speed of the non-motor vehicles through the crossing:

T=≈6s

example 2

The invention relates to a method for detecting barriers at a railway crossing, which at least comprises a video acquisition unit 2 for acquiring a railway crossing 1, wherein the video acquisition unit 2 runs in two directions of a train leaving the crossing, a distance sensing unit 3 of the train leaving the crossing, a speed sensing unit 4 and a processing unit 5 of the train leaving the crossing, the processing unit 5 is electrically connected with the video acquisition unit 2, the distance sensing unit 3 and the speed sensing unit 4 and is used for acquiring video information of the railway crossing 1, distance information of the train leaving the crossing and running speed information of the train leaving the crossing, and the processing unit 5 outputs prompt information and controls the rise and fall of a barrier 6 according to the acquired video information of the railway crossing, the distance information of the train leaving the crossing and the running speed information of the train leaving the crossing.

The distance sensing unit 3 is a laser or sound wave sensor arranged at two ends of a forward train, the speed sensing unit 4 is a sound wave detection head arranged on a railway sleeper, the position of the train is determined according to the laser or sound wave sensor, and train movement information is obtained according to the sound wave detection head.

The processing unit 5 outputs prompt information and controls the barrier 6 to ascend and descend according to the state of the video information of the road junction 1, the distance information of the train leaving the road junction and the running speed information of the direction of the train leaving the road junction, and comprises the following steps:

the method comprises the steps of obtaining distance information of a train from a crossing, obtaining running speed information of the train from the crossing, determining time of the train to the crossing 1 according to the information, processing image change of the obtained crossing 1 according to the time, determining whether the information is sent to a locomotive control center according to a processing result, when the train passes through the crossing 1 within the time T, controlling a barrier 6 to descend when the image obtained by a video acquisition unit 2 is the same as a safety image mode, and when the train passes through the crossing 1 within the time T, outputting prompt information to the crossing 1 when the image obtained by the video acquisition unit 2 is different from the safety image mode, and sending the information to the locomotive control center.

The safety image is an image obtained by taking the railway track as the center and two side railings as the boundaries, and no moving target body image crossed with the railway track is arranged in the image.

The safety image is an image obtained by taking the rail as the center and the railings on the two sides as the boundaries, and the image is image information obtained immediately before the railings rise when a train passes through the level crossing 1. There is no moving object image intersecting the railroad track in this time image.

The information is sent to the locomotive control center, and the information sent by the processing unit 5 comprises the delay alarm time of 6 s.

The delay alarm time is calculated according to the following formula:

T=

l₁-distance, m, of crossing signals to railway clearance;

l₂-the distance between two railway limits, m;

v-the prescribed minimum speed of a non-motor vehicle passing through the crossing, calculated at 5 km/h;

the prescribed minimum speed of the motor vehicle through the crossing, calculated at 10km/h, notes: when driving motor vehicles and non-motor vehicles on the road side, it should be calculated as the lowest speed of the non-motor vehicles through the crossing:

T=≈6s

the foregoing is a more detailed description of the invention in connection with specific preferred embodiments and it is not intended that the invention be limited to these specific details. For those skilled in the art to which the invention pertains, several simple deductions or substitutions can be made without departing from the spirit of the invention, and all shall be considered as belonging to the protection scope of the invention.