CN110733538A - Method and system for trains to autonomously identify states of front signal machines - Google Patents

Abstract

The invention relates to a method and system for autonomously identifying the state of a signal ahead of a train, which is applied to an ITCS train control system. The method includes: S1: downloading a track electronic map from an on-board computer, and obtaining real-time latitude and longitude coordinates of the train by a navigation satellite positioning device of the train ; S2: the on-board computer obtains the occupied block zone information of the train according to the track electronic map and the train longitude and latitude coordinates, and updates the track electronic map by using a map matching method; S3: the on-board radio station sends the occupied block zone information to the wireless block center; S4 : After the wireless blocking center receives the information of the occupied block zone, the status information of the virtual signal on the train running line that is closest to the front end of the locomotive and has not passed the locomotive is sent to the on-board radio in real time, so as to realize the independent identification of the status of the signal in front of the train, and Update track electronic map. Compared with the prior art, the present invention has the advantages of high automation and low cost.

Description

A method and system for autonomously identifying the state of a signal ahead of a train

technical field

The invention relates to the field of ITCS train control systems, in particular to a method and system for autonomously identifying the state of a signal ahead of a train.

Background technique

The ITCS train control system is an enhanced train control system. It is a train operation control system that integrates automatic blocking, station interlocking and train overspeed protection control adopted by the Qinghai-Tibet line signal system. In the past, the trains equipped with the CTCS signal system were equipped with the on-board equipment. Track circuit information acquisition The idle state of the block zone ahead, the use of track circuits and their receiving antennas increases the initial investment of the system and future operation and maintenance costs, and reduces the maintainability of the system; ITCS train control system train operation status and control The information is transmitted through the railway mobile communication system GSM-R. There is no track circuit on the entire line. The GPS information, the speed sensor information, and the Kalman algorithm are used to determine the position of the train, so as to check the track occupied by the train and its position. Most stations do not have ground signals. There is no section passing signal on the whole line. The train uses the on-board display as the driving certificate. The blocking method adopts the wireless blocking method based on GSM-R. Each station along the line has a wireless blocking center RBC, which is used for blocking, station signal status and train operation. The exchange center for information such as status, train control, and section running direction control.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide a method and a system for autonomously identifying the state of a signal ahead of a train in order to overcome the above-mentioned defects in the prior art.

The object of the present invention can be realized through the following technical solutions:

A method for a train to autonomously identify the state of a front signal, applied to an ITCS train control system, comprising:

S1: The on-board computer downloads the track electronic map, and the train's navigation satellite positioning equipment obtains the real-time latitude and longitude coordinates of the train;

S2: The on-board computer obtains the information of the occupied block zone of the train according to the track electronic map and the latitude and longitude coordinates of the train, and updates the track electronic map by using a map matching method;

S3: The vehicle radio sends the information of the occupied block area to the wireless block center;

S4: After the wireless blocking center receives the occupied block partition information, the status information of the virtual signal on the train running line that is closest to the front end of the locomotive and has not passed the locomotive is sent to the on-board radio in real time, so as to realize autonomous identification of the status of the signal in front of the train. And update the orbit electronic map.

Further, the electronic track map includes virtual signal status information, longitude and latitude information of the line, and occupied block partition information of the train.

Further, the updating of the electronic track map described in step S2 is specifically: updating the virtual signal state information of the virtual signal that is closest to the rear end of the train and has passed on the line on which the train travels;

The updating of the electronic track map in step S4 is specifically: updating the virtual signal status information of the virtual signal that is closest to the front end of the locomotive and has not passed on the line on which the train travels.

Further, the navigation satellite positioning equipment includes a navigation satellite antenna and a navigation satellite receiver, and step S1 is specifically:

S101: Receive navigation satellite signals through the navigation satellite antenna on the top of the locomotive;

S102: Obtain the latitude and longitude coordinates of the train by calculating the navigation satellite signals through the navigation satellite receiver of the locomotive.

A system for autonomously recognizing the state of a signal in front of a train, applied to an ITCS train control system, is characterized in that, it includes:

The navigation satellite positioning unit is used to receive the navigation satellite signal and calculate and obtain the latitude and longitude coordinates of the train according to the signal;

The on-board computer is used to download and update the track electronic map, and obtain the occupied block partition information of the train through the map matching method according to the latitude and longitude coordinates of the train and the track electronic map;

The on-board radio is used to send the information of the occupancy block area and return the real-time status of the virtual signal machine through the railway mobile communication network and the wireless block center;

The wireless blocking center is used to receive the information of the occupied block zone of the train, send the status of the virtual signal in front of the train to the on-board radio, and turn off the virtual signal behind the train.

Further, the electronic track map includes virtual signal status information, longitude and latitude information of the line, and occupied block partition information of the train.

Further, the specific process of updating the orbit electronic map is as follows:

When the on-board computer obtains the information of the occupied block zone of the train, the wireless block center updates the virtual signal status information of the virtual signal that is closest to the rear end of the train and has passed on the line running on the train in real time;

When the on-board radio station receives the virtual signal machine status information of the virtual signal machine that is closest to the front end of the locomotive and has not passed from the wireless blocking center, the virtual signal machine status information of the virtual signal machine is updated in real time.

Further, the navigation satellite positioning unit includes a navigation satellite antenna and a navigation satellite receiver, the navigation satellite antenna is used for receiving navigation satellite signals, and the navigation satellite receiver obtains the longitude and latitude coordinates of the train by calculating the navigation satellite signals.

Compared with the prior art, the present invention has the following beneficial effects:

(1) The track electronic map adopted by the present invention includes information such as virtual signal status information, longitude and latitude information of the line, and occupancy block partition information of the train. When the train is powered on, the track electronic map is automatically downloaded, and the track electronic map of the train is obtained After the map and the status information of the virtual signal in front of the train, the track electronic map is updated, and the train driver is guided to drive the train through the map, which reduces the degree of manual participation, and at the same time is more intuitive, improving the efficiency and accuracy of the driver's operation;

(2) The present invention is provided on the train with a navigation satellite antenna and a navigation satellite receiver for obtaining the latitude and longitude coordinates of the train, and the on-board computer obtains the information of the occupancy block zone of the train according to the downloaded track electronic map and the obtained latitude and longitude coordinates of the train. The block zone information is sent to the wireless block center, and the radio block center transmits the virtual signal status information in front of the train back to the on-board radio, enabling the train to identify the status of the front signal independently. The investment in machines and other equipment reduces the initial investment and maintenance costs of the system;

(3) The present invention automatically identifies the state of the front signal machine through the on-board equipment of the locomotive, which relieves the task of the train trackside equipment, reduces the difficulty of the task processing process, and enhances the reliability and service life of the equipment in harsh environments.

Description of drawings

Figure 1 is a schematic diagram of the status of the vehicle-mounted equipment identification signal when the vehicle-ground communication is normal;

Figure 2 is a schematic diagram of the status of the vehicle-mounted equipment identification signal when the vehicle-ground communication is abnormal;

Fig. 3 is the flow chart of autonomous identification signal machine when the vehicle-ground communication is normal;

Figure 4 is a flow chart of autonomously identifying the signal machine when the vehicle-ground communication is abnormal.

Detailed ways

The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. This embodiment is implemented on the premise of the technical solution of the present invention, and provides a detailed implementation manner and a specific operation process, but the protection scope of the present invention is not limited to the following embodiments.

Example 1

A method for a train to autonomously identify the state of a signal in front of a train is applied to the ITCS train control system. According to whether the wireless communication between the train and the ground is normal, it can be divided into two situations:

1) When the wireless communication between the vehicle and the ground is normal, as shown in Figure 1 and Figure 3, the method includes:

S1: Located on X1G If the train has been powered on, go to step S2; otherwise, the train is powered on and initialized, the on-board computer guides the driver to download or update the track electronic map, and the navigation satellite antenna on the top of the locomotive receives the navigation satellite signal and transmits it through the serial port. It is transmitted to the navigation satellite receiver in the form of communication, and the navigation satellite receiver decodes the navigation satellite signal to obtain the longitude and latitude coordinates of the navigation satellite antenna, that is, the train, and transmits the coordinates to the on-board computer;

The track electronic map includes virtual signal status information, line latitude and longitude information and train occupancy block information;

S2: According to the track electronic map and the latitude and longitude coordinates, the on-board computer uses the map matching method to obtain the information of the occupied block zone of the train and transmits the information to the on-board radio station, and updates the virtual train line that is closest to the back end of the train and has passed through. The virtual semaphore state information of the semaphore;

S3: The vehicle radio sends the information of the occupied block zone to the Radio Block Center (RBC);

S4: RBC sends the virtual signal status information of the virtual signal that is closest to the front end of the locomotive and fails to pass to the on-board radio in real time after receiving the information of the occupied block area, and the on-board radio transmits the information to the on-board computer. , to realize the independent identification of the status of the signal in front of the train, according to the actual situation of the line resources, choose whether to open the virtual signal in front of the train, and close the virtual signal that is closest to the front of the train and has not passed through in real time.

2) When the wireless communication between the vehicle and the ground is abnormal, as shown in Figure 2 and Figure 4, the method further includes:

201) The on-board computer immediately outputs the non-target braking, and the train driver reduces the train speed according to the deceleration not lower than the specified value;

202) The on-board computer updates the track electronic map, and sets the virtual signal in front of the train to a closed state;

203) According to the latitude and longitude coordinates of the train and the track electronic map, the on-board computer judges whether the first signal in front is an incoming and outgoing signal, and if so, the on-board computer executes a stop and overrun operation, otherwise the on-board computer executes a parking slow motion or parking according to the configuration file Override operation.

Embodiment 2

A system for autonomously identifying the state of a signal ahead of a train corresponding to the first embodiment, applied to the ITCS train control system, includes:

The navigation satellite positioning unit includes a navigation satellite antenna and a navigation satellite receiver. The navigation satellite antenna is used to receive navigation satellite signals, and the navigation satellite receiver obtains the latitude and longitude coordinates of the train by calculating the navigation satellite signals;

The on-board computer is used to download and update the track electronic map, and obtain the occupied block partition information of the train through the map matching method according to the latitude and longitude coordinates of the train and the track electronic map. The track electronic map includes virtual signal status information, line longitude and latitude information and Occupied block partition information of the train.

The on-board radio is used to send the information of the occupancy block area and return the real-time status of the virtual signal machine through the railway mobile communication network and the wireless block center;

RBC is used to receive the information of the occupied block zone of the train, send the status of the virtual signal in front of the train to the on-board radio, and turn off the virtual signal at the rear of the train.

The specific process of updating the orbit electronic map is as follows:

When the on-board computer acquires the information of the occupied block zone of the train, it updates the virtual signal status information of the virtual signal that is closest to the rear end of the train and has passed on the line on which the train travels in real time;

When the on-board radio station receives the virtual signal machine status information of the virtual signal machine that is closest to the front end of the locomotive and has not passed, sent from the RBC, the virtual signal machine status information of the virtual signal machine is updated in real time.

Embodiments 1 and 2 propose a method and system for the train to autonomously identify the state of the signal in front of the train. A navigation satellite antenna and a navigation satellite receiver are installed on the train to obtain the latitude and longitude coordinates of the train. The latitude and longitude coordinates of the train can be used to obtain the information of the occupied block area of the train, and the block area information will be sent to the wireless block center through the on-board radio. Signal state, the system structure is simple, the investment of track circuit, receiving equipment and signal equipment is reduced, the initial investment and maintenance cost of the system are reduced, and the manpower input and the workload of trackside equipment are reduced.

The preferred embodiments of the present invention have been described in detail above. It should be understood that those skilled in the art can make many modifications and changes according to the concept of the present invention without creative efforts. Therefore, all technical solutions that can be obtained by those skilled in the art through logical analysis, reasoning or limited experiments on the basis of the prior art according to the concept of the present invention shall fall within the protection scope determined by the claims.

Claims (8)

1, method of train autonomous recognition front signal machine state, is applied to ITCS train control system, its characterized in that, includes:

s1: downloading a track electronic map by a vehicle-mounted computer, and acquiring real-time longitude and latitude coordinates of a train by navigation satellite positioning equipment of the train;

s2: the vehicle-mounted computer acquires the information of the occupied block partition of the train by adopting a map matching method according to the track electronic map and the longitude and latitude coordinates of the train, and updates the track electronic map;

s3: the vehicle-mounted radio station sends the information of occupying the block subarea to a radio block center;

s4: and after receiving the information of the occupied block subareas, the wireless block center sends the state information of the virtual signal machine which is closest to the front end of the locomotive on the train running line and does not pass through the virtual signal machine to the vehicle-mounted radio station in real time, so that the state of the signal machine in front of the train can be identified autonomously, and the track electronic map is updated.

2. The method of autonomous recognition of a front signal status by a train according to claim 1, wherein said track electronic map includes virtual signal status information, latitude and longitude information of a line, and occupancy block zone information of a train.

3. The method for autonomously identifying the state of the front traffic signal of trains according to claim 1, wherein the step S2 is to update the electronic map of the track, specifically, the virtual traffic signal state information of the virtual traffic signal which is closest to the rear end of the train and has passed through on the route on which the train travels;

step S4, the updating the track electronic map specifically includes: and updating the virtual signal state information of the virtual signal which is closest to the front end of the locomotive on the running line of the train and does not pass through.

4. The method for the train to autonomously identify the status of the front signal according to claim 1, wherein the navigation satellite positioning device includes a navigation satellite antenna and a navigation satellite receiver, and the step S1 specifically comprises:

s101: receiving a navigation satellite signal through a navigation satellite antenna at the top of the locomotive;

s102: and calculating a navigation satellite signal through a navigation satellite receiver of the locomotive to obtain the longitude and latitude coordinates of the train.

The system of kinds of train autonomous recognition front semaphore state is applied to ITCS train control system, its characterized in that includes:

the navigation satellite positioning unit is used for receiving a navigation satellite signal and calculating to obtain the longitude and latitude coordinates of the train according to the signal;

the vehicle-mounted computer is used for downloading and updating the track electronic map, and acquiring the information of the occupied block partition of the train by a map matching method according to the longitude and latitude coordinates of the train and the track electronic map;

the vehicle-mounted radio station is used for transmitting the information of the occupied block subarea and returning the real-time state of the virtual signal machine through the railway mobile communication network and the wireless block center;

and the wireless blocking center is used for receiving the information of the occupied blocking subarea of the train, sending the state of the virtual signal machine in front of the train to the vehicle-mounted radio station and closing the virtual signal machine behind the train.

6. The system of autonomous recognition of front signal status by train according to claim 5, wherein said track electronic map includes virtual signal status information, latitude and longitude information of line and occupied block zone information of train.

7. The system for autonomously identifying the state of the front signal by trains according to claim 5, wherein the specific process for updating the track electronic map is as follows:

after the on-board computer acquires the occupation block partition information of the train, the wireless block center updates the state information of the virtual signal machine which is closest to the rear end of the train and passes through the virtual signal machine on the running line of the train in real time;

and when the vehicle-mounted radio station receives the virtual signal machine state information of the virtual signal machine which is closest to the front end of the locomotive on the train running line and does not pass through and is sent by the radio block center, updating the virtual signal machine state information of the virtual signal machine in real time.

8. The system of for the train to autonomously recognize the state of the front signal, according to claim 5, wherein the navigational satellite positioning unit comprises a navigational satellite antenna for receiving navigational satellite signals and a navigational satellite receiver for obtaining the longitude and latitude coordinates of the train by calculating the navigational satellite signals.

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