Digital track interval positioning and recognition system

Abstract

The invention discloses a digital track interval positioning and recognition system, which consists of a geomagnetic sensor, a vehicle-mounted interval positioning system, a trackside receiving system, a trackside solar cell module, a camera system and a dispatching center, and is characterized in that the dispatching center comprises a driving dispatching system and a dispatching center interval analysis system in encrypted communication with the driving dispatching system; the geomagnetic sensor detects the running direction and existence of the vehicle by detecting the magnetic field change of the vehicle, and is used for sensing the passing vehicle and sending a trigger signal to the trackside receiving system. According to the digital track interval positioning and recognition system, passing vehicles can be sensed through the geomagnetic sensor, the trackside camera system is triggered to collect pictures of the passing vehicles, time stamps and vehicle numbers are recorded and transmitted to the dispatching center to identify the vehicles, and the dispatching system judges the interval occupation condition; the system is used for enhancing the security of the digital track, and is low in hardware cost, reliable in communication, high in availability and low in computing resource demand.

Description

Technical Field

[0001] The invention relates to a digital track section positioning and identification system. Background Art

[0002] In the modern rail transportation system, accurate track section positioning and vehicle identification are the key to ensure the safety and efficient operation of the system. Digital track trackside equipment is an important part of the digital track automatic protection system, which forms a complete set of digital track automatic protection system with the vehicle and signal system automatic protection system. However, there is currently a lack of accurate track section positioning and vehicle identification systems. Summary of the invention

[0003] The purpose of the present invention is to overcome the defects of the prior art and provide a digital track section positioning and identification system. The system can sense passing vehicles through geomagnetic sensors and trigger the trackside camera system to collect photos of passing vehicles and record timestamps and vehicle numbers and transmit them to the dispatching center for vehicle identification. The dispatching system determines the section occupancy situation to enhance the safety of digital tracks. Moreover, the system has low hardware cost, reliable communication, high availability and low computing resource requirements.

[0004] The technical solution to achieve the above purpose is: a digital track section positioning and identification system, which consists of a geomagnetic sensor, a vehicle-mounted section positioning system, a trackside receiving system, a trackside solar cell module, a camera system and a dispatching center. The dispatching center includes a driving dispatching system and a dispatching center section analysis system that communicates with the dispatching center in encrypted communication, wherein:

[0005] The geomagnetic sensor is installed under the road surface of the digital track and exposes the sensing area. The geomagnetic sensor detects the running direction and existence of the vehicle by detecting the magnetic field change of the vehicle, and is used to sense the passing vehicle and send a trigger signal to the trackside receiving system;

[0006] The vehicle-mounted interval positioning system is composed of a vehicle-mounted processor and a vehicle-mounted ZIGBEE transmission system, which is used to send timestamps, vehicle numbers, vehicle speeds and running line information to the trackside receiving system;

[0007] The trackside receiving system includes a ZIGBEE communication module, an edge processor and an Ethernet communicator. The trackside receiving system receives the timestamp, vehicle number, vehicle speed and running line information sent by the vehicle-mounted ZIGBEE transmitting system through the ZIGBEE communication module to form a ZIGBEE vehicle-mounted message; it is used to obtain the approximate position of the vehicle-mounted ZIGBEE transmitting system node within the communication range through the three-point RSSI positioning method to provide auxiliary positioning; the edge processor is used to receive the trigger signal from the geomagnetic sensor and control the camera system to take pictures; the edge processor packages the photos of the camera system with the ZIGBEE vehicle-mounted message, and transmits it to the dispatch center interval analysis system through the Ethernet communicator;

[0008] The trackside solar cell module is used to provide a continuous power supply to the trackside receiving system;

[0009] The camera system is installed on the roadside of the digital track, and its triggering is controlled by the edge processor to take pictures of passing vehicles and record timestamps and vehicle numbers; the camera system captures vehicle information in real time and transmits image data to the dispatch center interval analysis system for vehicle identification and recording;

[0010] The dispatch center interval analysis system is a deep learning classification and recognition system with a pre-trained model. It parses the photos and ZIGBEE vehicle messages sent by the trackside receiving system, unpacks them in the order of timestamps, recognizes and analyzes the information in the photos, classifies them through the pre-trained model, and identifies the corresponding vehicle model and license plate number results; combined with the timestamp, vehicle number, vehicle speed, running line, and interval occupancy beacon ID number information provided by the edge processor, it is sent to the traffic dispatch system through secure message encryption to inform the time, interval occupancy, vehicle number and license plate number information.

[0011] In the above-mentioned digital track interval positioning and identification system, the geomagnetic sensor has a unique ID number, which corresponds to the response operation interval in the dispatching center interval analysis system. The dispatching center interval analysis system distinguishes the occupied and idle conditions of the interval by identifying the triggering condition of the geomagnetic sensor:

[0012] When the running direction of the vehicle sensed by the geomagnetic sensor at the section entrance is consistent with the operating direction, the section analysis system of the dispatching center prompts the vehicle dispatching system that the running direction is normal and the section is occupied;

[0013] When the running direction of the vehicle sensed by the geomagnetic sensor is inconsistent with the operating direction, the dispatch center interval analysis system sends an alarm to the driving dispatch system, indicating that the driving dispatch system is operating abnormally and prompting the dispatcher to intervene manually;

[0014] When the running direction of the vehicle sensed by the geomagnetic sensor at the section exit is consistent with the operating direction, the section analysis system of the dispatching center prompts the vehicle dispatching system that the running direction is normal and the section occupancy release is in the section idle state.

[0015] The digital track section positioning and identification system of the present invention can sense passing vehicles through geomagnetic sensors and trigger the trackside camera system to collect photos of passing vehicles and record timestamps and vehicle numbers and transmit them to the dispatching center for vehicle identification. The dispatching system determines the section occupancy situation to enhance the safety of the digital track. The system has low hardware cost, reliable communication, high availability and low computing resource requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the digital track section positioning and identification system of the present invention;

[0017] Figure 2 This is a working principle diagram of the digital track section positioning and identification system of the present invention. DETAILED DESCRIPTION

[0018] In order to enable those skilled in the art to better understand the technical solution of the present invention, the specific implementation methods thereof are described in detail below in conjunction with the accompanying drawings:

[0019] See also Figure 1 and Figure 2 The best embodiment of the present invention is a digital track section positioning and identification system, which is composed of a geomagnetic sensor 1, a vehicle-mounted section positioning system 2, a trackside receiving system 3, a trackside solar cell module 4, a camera system 5 and a dispatching center 6. The dispatching center 6 includes a vehicle dispatching system 62 and a dispatching center section analysis system 61 in encrypted communication with the dispatching center.

[0020] The geomagnetic sensor 1 is installed under the road surface of the digital track 100 and exposes the sensing area. The geomagnetic sensor 1 detects the running direction and existence of the vehicle by detecting the magnetic field changes of the vehicle, and is used to sense the passing vehicle and send a trigger signal to the trackside receiving system 3. The geomagnetic sensor 1 has a unique ID number, which corresponds to the response operation interval in the dispatching center interval analysis system. The dispatching center interval analysis system 61 distinguishes the occupied and idle conditions of the interval by identifying the triggering condition of the geomagnetic sensor 1:

[0021] When the geomagnetic sensor at the section entrance senses that the running direction of the vehicle is consistent with the operating direction, the dispatch center section analysis system 61 prompts the driving dispatch system 62 that the running direction is normal and the section is occupied;

[0022] When the running direction of the vehicle sensed by the geomagnetic sensor is inconsistent with the operating direction, the dispatch center interval analysis system 61 sends an alarm to the vehicle dispatch system 62, indicating that the vehicle dispatch system 62 is operating abnormally, and prompting the dispatcher to intervene manually;

[0023] When the running direction of the vehicle sensed by the geomagnetic sensor at the section exit is consistent with the operating direction, the dispatch center section analysis system 61 prompts the driving dispatch system 62 that the running direction is normal and the section occupancy release is in the section idle state.

[0024] The vehicle-mounted interval positioning system 2 is composed of a vehicle-mounted processor and a vehicle-mounted ZIGBEE transmission system, which is used to send timestamps, vehicle numbers, vehicle speeds, and operating line information to the trackside receiving system 3. The ZIGBEE transmission system has the characteristics of stable wireless communication, self-organizing network, and strong encryption.

[0025] The trackside receiving system 3 includes a ZIGBEE communication module, an edge processor and an Ethernet communicator to achieve the following functions:

[0026] (1) The trackside receiving system 3 receives the timestamp, vehicle number, vehicle speed and running line information sent by the on-board ZIGBEE transmitting system through the ZIGBEE communication module to form a ZIGBEE on-board message;

[0027] (2) Through three distributed arrangements, the approximate location of the vehicle-mounted ZIGBEE transmission system node within the communication range is obtained by using the three-point RSSI positioning method to provide auxiliary positioning;

[0028] (3) The edge processor is used to receive the trigger signal from the geomagnetic sensor and control the camera system to take pictures; the edge processor packages the photos of the camera system with the ZIGBEE vehicle-mounted message and transmits it to the dispatch center interval analysis system through the Ethernet communicator.

[0029] The trackside solar cell module 4 is used to provide a continuous power supply for the trackside receiving system 3, ensuring the stable operation of the trackside receiving system 3 under various environmental conditions. The trackside solar cell module 4 can efficiently convert solar energy into electrical energy, reducing dependence on external power sources.

[0030] The camera system 5 is installed on the roadside of the digital track 100, and its triggering is controlled by the edge processor to take pictures of passing vehicles and record timestamps and vehicle numbers; the camera system 5 captures vehicle information in real time and transmits image data to the dispatch center interval analysis system 61 for vehicle identification and recording.

[0031] The dispatch center interval analysis system 61 is a deep learning classification and recognition system with a pre-trained model. It parses the photos and ZIGBEE vehicle messages sent by the trackside receiving system, unpacks them in the order of timestamps, recognizes and analyzes the information in the photos, classifies them through the pre-trained model, and identifies the corresponding vehicle model and license plate number results; combined with the timestamp, vehicle number, vehicle speed, running route, and interval occupancy beacon ID number information provided by the edge processor, it is sent to the driving dispatch system 62 through secure message encryption to inform the time, interval occupancy, vehicle number and license plate number information.

[0032] The digital track section positioning and identification system of the present invention, when in use, when a vehicle passes through a track section, the geomagnetic sensor 1 detects the magnetic field change of the vehicle, triggering the camera system 5 to take a photo of the vehicle. The camera system 5 records the photo, timestamp and vehicle number of the vehicle, and transmits these data to the dispatch center section analysis system 61 through the trackside receiving system 3. After receiving the data, the dispatch center section analysis system 61 determines the section occupancy according to the vehicle number and timestamp, and updates the status information of the track section, thereby enhancing the safety and management efficiency of the track.

[0033] In summary, the digital track section positioning and identification system of the present invention can sense passing vehicles through geomagnetic sensors and trigger the trackside camera system to collect photos of passing vehicles and record timestamps and vehicle numbers and transmit them to the dispatching center for vehicle identification. The dispatching system determines the section occupancy status to enhance the safety of digital tracks. The system has low hardware cost, reliable communication, high availability, and low computing resource requirements.

[0034] Those skilled in the art should recognize that the above embodiments are only used to illustrate the present invention, and are not intended to limit the present invention. As long as they are within the spirit of the present invention, any changes or modifications to the above embodiments will fall within the scope of the claims of the present invention.

Claims

1. A digital track section positioning and identification system, characterized in that: It consists of a geomagnetic sensor, a vehicle-mounted interval positioning system, a trackside receiving system, a trackside solar cell module, a camera system and a dispatching center. The dispatching center includes a vehicle dispatching system and a dispatching center interval analysis system that communicates with it in encrypted communication, wherein: The geomagnetic sensor is installed under the road surface of the digital track and exposes the sensing area. The geomagnetic sensor detects the running direction and existence of the vehicle by detecting the magnetic field change of the vehicle, and is used to sense the passing vehicle and send a trigger signal to the trackside receiving system; The vehicle-mounted interval positioning system is composed of a vehicle-mounted processor and a vehicle-mounted ZIGBEE transmission system, which is used to send timestamps, vehicle numbers, vehicle speeds and running line information to the trackside receiving system; The trackside receiving system includes a ZIGBEE communication module, an edge processor and an Ethernet communicator. The trackside receiving system receives the timestamp, vehicle number, vehicle speed and running line information sent by the vehicle-mounted ZIGBEE transmitting system through the ZIGBEE communication module to form a ZIGBEE vehicle-mounted message; it is used to obtain the approximate position of the vehicle-mounted ZIGBEE transmitting system node within the communication range through the three-point RSSI positioning method to provide auxiliary positioning; the edge processor is used to receive the trigger signal from the geomagnetic sensor and control the camera system to take pictures; the edge processor packages the photos of the camera system with the ZIGBEE vehicle-mounted message, and transmits it to the dispatch center interval analysis system through the Ethernet communicator; The trackside solar cell module is used to provide a continuous power supply to the trackside receiving system; The camera system is installed on the roadside of the digital track, and its triggering is controlled by the edge processor to take pictures of passing vehicles and record timestamps and vehicle numbers; the camera system captures vehicle information in real time and transmits image data to the dispatch center interval analysis system for vehicle identification and recording; The dispatch center interval analysis system is a deep learning classification and recognition system with a pre-trained model. It parses the photos and ZIGBEE vehicle messages sent by the trackside receiving system, unpacks them in the order of timestamps, recognizes and analyzes the information in the photos, classifies them through the pre-trained model, and identifies the corresponding vehicle model and license plate number results; combined with the timestamp, vehicle number, vehicle speed, running line, and interval occupancy beacon ID number information provided by the edge processor, it is sent to the traffic dispatch system through secure message encryption to inform the time, interval occupancy, vehicle number and license plate number information.

2. A digital track section positioning and identification system according to claim 1, characterized in that: The geomagnetic sensor has a unique ID number, which corresponds to the operating interval in the dispatch center interval analysis system. The dispatch center interval analysis system distinguishes the occupied and idle conditions of the interval by identifying the triggering conditions of the geomagnetic sensor: When the running direction of the vehicle sensed by the geomagnetic sensor at the section entrance is consistent with the operating direction, the section analysis system of the dispatching center prompts the vehicle dispatching system that the running direction is normal and the section is occupied; When the running direction of the vehicle sensed by the geomagnetic sensor is inconsistent with the operating direction, the dispatch center interval analysis system sends an alarm to the driving dispatch system, indicating that the driving dispatch system is operating abnormally and prompting the dispatcher to intervene manually; When the running direction of the vehicle sensed by the geomagnetic sensor at the section exit is consistent with the operating direction, the section analysis system of the dispatching center prompts the vehicle dispatching system that the running direction is normal and the section occupancy release is in the section idle state.

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