Train control method and device adopting redundant multiple channels

Abstract

The invention belongs to the technical field of train control, and particularly relates to a train control method and device adopting redundant multiple channels. The method comprises the following steps: acquiring a sending instruction; based on the sending instruction, obtaining first sending data of the LTE public network terminal and second sending data of the LTE private network terminal; and controlling the train according to the first sending data and the second sending data. According to the integrated train tail equipment applied by the invention, the safety data between the integrated train tail and the ATP are transmitted through the redundancy design and the same function of the 400M digital channel, the LTE private network channel and the LTE public network channel, and the transmission is carried out based on a safety communication protocol, so that the ATP completes the judgment of the integrity of the train.

Description

Technical Field

[0001] The present invention belongs to the technical field of train control, and in particular relates to a train control method and device using redundant multi-channels. Background Art

[0002] Disadvantages of existing technologies at home and abroad: At present, the communication of the tail equipment of railway trains is mainly based on the connection of fixed tail equipment to the train control system. In order to meet the railway train automatic control system, the digital dispatching communication system has been developed and applied in China. The train automatic protection equipment ATP obtains the train wind pressure information collected by the tail equipment through the digital dispatching communication system, and then completes the judgment of train integrity. This local digital dispatching communication system has the risk of communication blockage and discontinuity, especially when the line is mountainous, tunnels and other road conditions, this kind of problem is very likely to occur.

[0003] At present, the control systems of freight trains mostly use a touch-type dispatching console at the front of the train to control the equipment at the rear of the train. The driver makes judgments on the wind pressure of the train and there is no direct access to the train control system.

[0004] The International Union of Railways has made it clear that wired and wireless dispatching communication technologies are still mainly based on narrowband voice communication, and the train control system has not yet obtained the wind pressure collected by the tail equipment through the digital dispatching communication system.

[0005] The existing tail equipment is a special transportation safety device installed at the rear of the train to improve the safety of railway transportation when the guard car and the operating conductor are removed from the freight or passenger train and the rear of the train is unmanned. The tail equipment mainly has the functions of querying the wind pressure at the rear, and is also used as a train tail mark.

[0006] The existing traditional tail equipment has no safety level requirements and low reliability. The existing tail equipment generally uses 400M analog or digital radio or GSM-R and other standards to return the wind pressure information at the tail of the train to the tail locomotive station. There are certain disadvantages in information transmission rate, delay and mobility. Summary of the invention

[0007] In view of the above problems, the present disclosure provides a train control method using redundant multi-channels, the method comprising:

[0008] Get the sending instruction;

[0009] Based on the sending instruction, obtaining first sending data of the LTE public network terminal and second sending data of the LTE private network terminal;

[0010] The train is controlled according to the first transmission data and the second transmission data.

[0011] Preferably, the method further comprises:

[0012] Get the last 400M of connection data;

[0013] The train is controlled based on the 400M connection data.

[0014] Preferably, obtaining the connection data of the last 400M of the column includes:

[0015] Receive request connection data;

[0016] The connection request data is processed by the processing board to obtain the connection data;

[0017] Switch channels and send connection data.

[0018] Preferably, obtaining the first transmission data of the LTE public network terminal includes:

[0019] Start the LTE public network terminal;

[0020] After waiting for the preset time, wake up AT and send the OK command;

[0021] If the AT receives the OK command, it obtains the IMEI and sends the OK command;

[0022] If IMEI receives the OK command, it activates the scene and sends the OK command;

[0023] If the scene receives the OK command, it opens the UDP Socket and sends the OK command;

[0024] If the UDP Socket receives the OK command, it confirms that the LTE public network terminal is in idle state;

[0025] A first AT command is acquired, and first sending data of the LTE public network terminal is obtained based on the first AT command.

[0026] Preferably, the obtaining of the second transmission data of the LTE private network terminal includes:

[0027] Start the LTE private network terminal;

[0028] After waiting for the preset time, wake up AT and send the OK command;

[0029] If AT receives the OK command, it turns off the echo and sends the OK command;

[0030] If the echo indicates that an OK command has been received, the signal strength is reported and an OK command is sent;

[0031] If the reporting unit receives the OK command, it turns on the data state and sends the OK command;

[0032] If the data state receives the OK command, the UDP Socket is opened and the OK command is sent;

[0033] If the UDP Socket receives the OK command, it confirms that the LTE private network terminal is in idle state;

[0034] A second AT command is obtained, and second sending data of the LTE private network terminal is obtained based on the second AT command.

[0035] Preferably, the method further comprises:

[0036] Get the reception data of the last 400M of the column, the LTE public network terminals, and the LTE private network terminals.

[0037] Preferably, obtaining the received data of the LTE public network terminal includes:

[0038] If the LTE public network terminal is idle, obtain the third AT command;

[0039] Based on the third AT command, sending a fourth AT command;

[0040] receiving a fifth AT command according to the fourth AT command;

[0041] The reception data of the LTE public network terminal is obtained based on the fifth AT command.

[0042] Preferably, obtaining the received data of the LTE private network terminal includes:

[0043] If the LTE private network terminal is idle, the sixth AT command is received;

[0044] The reception data of the LTE private network terminal is obtained based on the sixth AT command.

[0045] The present disclosure also proposes a train control device using redundant multi-channels, the device comprising a communication module,

[0046] The communication module includes a first communication module and a second communication module, the first communication module includes a column tail 400M and an LTE public network terminal, and the second communication module includes an LTE private network terminal;

[0047] The communication module is connected to the processing module, and the processing module includes a first processing module and a second processing module;

[0048] The first communication module is connected to the first processing module via a data interface, and the second communication module is connected to the second processing module via data reception;

[0049] The first communication module is also connected to the second processing module, and the second communication module is also connected to the first processing module

[0050] Preferably, the communication module is used to assemble and parse the non-security layer of the security communication protocol;

[0051] The processing module is used for detecting train equipment.

[0052] Preferably, the first processing module and the second processing module transmit information by taking 2 as the method.

[0053] The present disclosure has the following beneficial effects:

[0054] (1) The integrated tail-end equipment used in the present disclosure has three redundant channel designs: 400M digital, LTE private network, and LTE public network. The functions are the same to transmit the safety data between the integrated tail-end and ATP. The data is transmitted based on the safety communication protocol, and then the ATP completes the judgment of the train integrity.

[0055] (2) In the present disclosure, safety data is transmitted in a redundant multi-channel manner. On the basis of ensuring safety, fault-tolerant control is added. As long as one channel function is good, the system can still ensure the transmission of safety data, thereby improving the system reliability, availability and maintainability. In addition, heavy-duty freight pays more attention to the reliability of equipment. The suspension of equipment in some cases may cause great losses, even immeasurable losses. In order to minimize the suspension of equipment when failure occurs, the redundancy of the safety data transmission of the tail equipment is combined to effectively reduce the occurrence of such operation failure scenarios.

[0056] Other features and advantages of the present disclosure will be described in the following description, and partly become apparent from the description, or be understood by implementing the present disclosure. The purpose and other advantages of the present disclosure can be realized and obtained by the structures indicated in the description and the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0057] In order to more clearly illustrate the embodiments of the present disclosure or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present disclosure. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0058] Figure 1 A diagram showing a train control method using redundant multi-channels in an embodiment of the present disclosure is shown;

[0059] Figure 2 The following is a flowchart of LTE private network processing in an embodiment of the present disclosure;

[0060] Figure 3 The following is a flowchart of LTE public network processing in an embodiment of the present disclosure;

[0061] Figure 4 The 400M processing flow in the embodiment of the present disclosure is shown;

[0062] Figure 5 A diagram showing a train control device using redundant multiple channels in an embodiment of the present disclosure is shown. DETAILED DESCRIPTION

[0063] Example embodiments will now be described more fully with reference to the accompanying drawings. However, example embodiments can be implemented in a variety of forms and should not be construed as being limited to the examples set forth herein; on the contrary, these embodiments are provided so that the present disclosure will be more comprehensive and complete, and the concepts of the example embodiments are fully conveyed to those skilled in the art. The described features, structures, or characteristics may be combined in one or more embodiments in any suitable manner. In the following description, many specific details are provided to provide a full understanding of the embodiments of the present disclosure. However, those skilled in the art will appreciate that the technical solutions of the present disclosure may be practiced while omitting one or more of the specific details, or other methods, components, devices, steps, etc. may be adopted. In other cases, known technical solutions are not shown or described in detail to avoid obscuring various aspects of the present disclosure.

[0064] In addition, the accompanying drawings are only schematic illustrations of the present disclosure and are not necessarily drawn to scale. The same reference numerals in the figures represent the same or similar parts, and thus their repeated description will be omitted. Some of the block diagrams shown in the accompanying drawings are functional entities and do not necessarily correspond to physically or logically independent entities. These functional entities can be implemented in software form, or implemented in one or more hardware units or integrated circuits, or implemented in different networks and / or processor devices and / or microcontroller devices.

[0065] The flowcharts shown in the accompanying drawings are only exemplary and do not necessarily include all the steps. For example, some steps may be decomposed, while some steps may be combined or partially combined, so the actual execution order may change according to the actual situation.

[0066] The terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the terms used in this way can be interchanged where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein, for example.

[0067] In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product, or apparatus comprising a series of steps or sub-modules is not necessarily limited to those steps or sub-modules explicitly listed, but may include other steps or sub-modules not explicitly listed or inherent to these processes, methods, products, or apparatuses.

[0068] like Figure 1 As shown, the present disclosure proposes a train control method using redundant multi-channels, the method comprising:

[0069] Get the sending instruction;

[0070] Based on the sending instruction, obtaining first sending data of the LTE public network terminal and second sending data of the LTE private network terminal;

[0071] The train is controlled according to the first transmission data and the second transmission data.

[0072] In this embodiment, the instructions are all generated by the communication CPU.

[0073] The method further comprises:

[0074] Get the last 400M of connection data;

[0075] The train is controlled based on the 400M connection data.

[0076] The acquisition of the connection data of the last 400M of the column includes:

[0077] Receive request connection data;

[0078] The connection request data is processed by the processing board to obtain the connection data;

[0079] Switch channels and send connection data.

[0080] like Figure 4 As shown, when the connection is requested for the first time, the front 400M sends data through channel 1 and channel 14, and the rear 400M receives data at this time, and the serial port sends the received data to the processing board for processing; when the connection is answered, the rear 400M sends the received data to the rear CPU through the serial port for processing, and then sends the processed data to the front 400M through channel 14, and the front 400M receives the data, which is processed by the front CPU and then sent to ATP. The advantage of this setting is that when the front is sending, the rear is ready to receive; when the rear is sending, the front is ready to receive, which can avoid the overlap of channel 14 between the sender and the receiver, and ensure that both the sender and the receiver can receive data.

[0081] like Figure 2 As shown, obtaining the first transmission data of the LTE public network terminal includes:

[0082] Start the LTE private network terminal;

[0083] After waiting for the preset time, wake up AT (Attention, instruction set) and send the OK command;

[0084] If AT does not receive the OK command within the specified time, it will resend the OK command. If the OK command is still not received after the maximum number of retries, the scene will be deactivated and AT will be re-awakened.

[0085] If AT receives the OK command, it turns off the echo and sends the OK command;

[0086] If the OK command is not received after the specified time, the OK command will be resent. If the OK command is still not received after the maximum number of retries, the scene will be deactivated and the AT will be re-awakened.

[0087] If the echo indicates that an OK command has been received, the signal strength is reported and an OK command is sent;

[0088] If the reporting unit does not receive the OK command within the specified time, it will resend the OK command. If the OK command is still not received after the maximum number of resends, the scene will be deactivated and the AT will be re-awakened.

[0089] If the reporting unit receives the OK command, it turns on the data state and sends the OK command;

[0090] If the data state does not receive the OK command within the specified time, the OK command will be resent. If the OK command is still not received after the maximum number of retries, the scene will be deactivated and the AT will be re-awakened.

[0091] If the data state receives the OK command, the UDP Socket is opened and the OK command is sent;

[0092] If the UDP Socket does not receive the OK command within the specified time, it will resend the OK command. If the OK command is still not received after the maximum number of retries, the scene will be deactivated and the AT will be re-awakened.

[0093] If the UDP Socket receives the OK command, it confirms that the LTE private network terminal is in idle state;

[0094] Acquire a second AT command, and obtain first sending data of the LTE public network terminal based on the second AT command;

[0095] If the OK command is not received within the specified time, the OK command is resent. If the OK command is still not received after the maximum number of retransmissions, the scene is deactivated and the AT is reawakened. The “>” in the figure indicates the character sent by the LTE public network terminal.

[0096] In this embodiment, the preset time can be set according to actual needs, and the preset time here is 30s.

[0097] In this embodiment, the specified time can be set according to actual needs, and the specified time here is 1 second.

[0098] In this embodiment, the maximum number of retransmissions can be set according to actual needs, and the maximum number of retransmissions here is 10 times.

[0099] In this embodiment, the second AT command is AT+ZIPSEND=1, but the second AT command is not unique and can be set according to actual conditions.

[0100] like Figure 3 As shown, the obtaining of the second transmission data of the LTE public network terminal includes:

[0101] Start the LTE public network terminal;

[0102] After waiting for the preset time, wake up AT and send the OK command;

[0103] If AT does not receive the OK command within the specified time, it will resend the OK command. If the OK command is still not received after the maximum number of retries, the scene will be deactivated and AT will be re-awakened.

[0104] If the AT receives the OK command, it obtains the IMEI (International Mobile Equipment Identity) and sends an OK command;

[0105] If IMEI does not receive the OK command within the specified time, it will resend the OK command. If the OK command is still not received after the maximum number of resends, the scene will be deactivated and the AT will be woken up again.

[0106] If the IMEI receives the OK command, the scenario is activated and an OK command is sent; in this embodiment, the activated scenario is the PDP (Packet Data Protocol) scenario;

[0107] If the scene does not receive the OK command within the specified time, the OK command will be resent. If the OK command is still not received after the maximum number of retries, the scene will be deactivated and the AT will be re-awakened.

[0108] If the scene receives the OK command, it opens the UDP Socket and sends the OK command;

[0109] If the UDP Socket does not receive the OK command within the specified time, it will resend the OK command. If the OK command is still not received after the maximum number of retries, the scene will be deactivated and the AT will be re-awakened.

[0110] If the UDP Socket receives the OK command, it confirms that the LTE public network terminal is in idle state;

[0111] Acquire a first AT command, and obtain second sending data of the LTE public network terminal based on the first AT command;

[0112] If the OK command is not received within the specified time or the number of retransmissions exceeds the maximum value, the OK command is resent, the scene is deactivated, and the AT is reawakened.

[0113] In this embodiment, the preset time can be set according to actual needs, and the preset time here is 30s.

[0114] In this embodiment, the prescribed time can be set according to actual needs, and the prescribed time here is 4 seconds.

[0115] In this embodiment, the maximum number of retransmissions can be set according to actual needs, and the maximum number of retransmissions here is 3 times.

[0116] In this embodiment, the first AT command is AT+QISEND, but the second AT command is not unique and can be set according to actual conditions.

[0117] like Figure 2-Figure 4 As shown, the received data of the column tail 400M, LTE public network terminal and LTE private network terminal are obtained.

[0118] like Figure 3 As shown, the received data of the LTE public network terminal is obtained, including:

[0119] If the LTE public network terminal is idle, obtain the third AT command;

[0120] Based on the third AT command, sending a fourth AT command;

[0121] receiving a fifth AT command according to the fourth AT command;

[0122] The reception data of the LTE public network terminal is obtained based on the fifth AT command.

[0123] In this embodiment, the third AT command is +QIURC:"recv", the fourth AT command is AT+AIRD, and the fifth AT command is +QIRD:1,len, but the third AT command, the fourth AT command and the fifth AT command are not unique and can be set according to actual conditions.

[0124] like Figure 2 As shown, the received data of the LTE private network terminal is obtained, including:

[0125] If the LTE private network terminal is idle, the sixth AT command is received;

[0126] The reception data of the LTE private network terminal is obtained based on the sixth AT command.

[0127] In this embodiment, the sixth AT instruction is "+ZIPRECV", but the sixth AT instruction is not unique and can be set according to actual conditions.

[0128] like Figure 5 As shown, the present disclosure also proposes a train control device using redundant multi-channels, the device comprising a communication module,

[0129] The communication module includes a first communication module and a second communication module, the first communication module includes a column tail 400M and an LTE public network terminal, and the second communication module includes an LTE private network terminal;

[0130] The communication module is connected to the processing module, and the processing module includes a first processing module and a second processing module;

[0131] The first communication module is connected to the first processing module via a data interface, and the second communication module is connected to the second processing module via data reception;

[0132] The first communication module is further connected to the second processing module, and the second communication module is further connected to the first processing module.

[0133] Specifically, the communication module is used to assemble and parse the non-security layer of the security communication protocol;

[0134] The processing module is used for detecting train equipment.

[0135] Specifically, the first processing module and the second processing module transmit information by taking 2 as the method.

[0136] This device is installed at the rear of the train. The front of the train is also equipped with 400M, LTE public network terminal and LTE private network terminal, all of which are connected to ATP-1 and ATP-2 through two communication interfaces.

[0137] Those skilled in the art should understand that although the present disclosure is described in detail with reference to the aforementioned embodiments, it is still possible to modify the technical solutions recorded in the aforementioned embodiments, or to make equivalent replacements for some of the technical features therein; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present disclosure.

Claims

1. A train control method using redundant multi-channels, characterized in that: The method comprises: Get the sending instruction; Based on the sending instruction, obtaining first sending data of the LTE public network terminal and second sending data of the LTE private network terminal; The train is controlled according to the first transmission data and the second transmission data.

2. The train control method using redundant multi-channel according to claim 1, characterized in that: The method further comprises: Get the last 400M of connection data; The train is controlled based on the 400M connection data.

3. The train control method using redundant multi-channel according to claim 2, characterized in that: Get the last 400M of connection data, including: Receive request connection data; The connection request data is processed by the processing board to obtain the connection data; Switch channels and send connection data.

4. The train control method using redundant multi-channel according to claim 1, characterized in that: Acquiring first transmission data of an LTE public network terminal, including: Start the LTE public network terminal; After waiting for the preset time, wake up AT and send the OK command; If the AT receives the OK command, it obtains the IMEI and sends the OK command; If IMEI receives the OK command, it activates the scene and sends the OK command; If the scene receives the OK command, it opens the UDP Socket and sends the OK command; If the UDP Socket receives the OK command, it confirms that the LTE public network terminal is in idle state; A first AT command is acquired, and first sending data of the LTE public network terminal is obtained based on the first AT command.

5. The train control method using redundant multi-channel according to claim 1, characterized in that: The obtaining the second transmission data of the LTE private network terminal includes: Start the LTE private network terminal; After waiting for the preset time, wake up AT and send the OK command; If AT receives the OK command, it turns off the echo and sends the OK command; If the echo indicates that an OK command has been received, the signal strength is reported and an OK command is sent; If the reporting unit receives the OK command, it turns on the data state and sends the OK command; If the data state receives the OK command, the UDP Socket is opened and the OK command is sent; If the UDP Socket receives the OK command, it confirms that the LTE private network terminal is in idle state; A second AT command is obtained, and second sending data of the LTE private network terminal is obtained based on the second AT command.

6. The train control method using redundant multi-channel according to claim 1, characterized in that: The method further comprises: Get the reception data of the last 400M of the column, the LTE public network terminals, and the LTE private network terminals.

7. The train control method using redundant multi-channels according to claim 6, characterized in that: Get the reception data of the LTE public network terminal, including: If the LTE public network terminal is idle, obtain the third AT command; Based on the third AT command, sending a fourth AT command; receiving a fifth AT command according to the fourth AT command; The reception data of the LTE public network terminal is obtained based on the fifth AT command.

8. The train control method using redundant multi-channels according to claim 6, characterized in that: Get the received data of the LTE private network terminal, including: If the LTE private network terminal is idle, the sixth AT command is received; The reception data of the LTE private network terminal is obtained based on the sixth AT command.

9. A train control device using redundant multi-channels, characterized in that: The device comprises a communication module, The communication module includes a first communication module and a second communication module, the first communication module includes a column tail 400M and an LTE public network terminal, and the second communication module includes an LTE private network terminal; The communication module is connected to the processing module, and the processing module includes a first processing module and a second processing module; The first communication module is connected to the first processing module via a data interface, and the second communication module is connected to the second processing module via data reception; The first communication module is further connected to the second processing module, and the second communication module is further connected to the first processing module.

10. The train control device using redundant multi-channels according to claim 9, characterized in that: The communication module is used to assemble and parse the non-security layer of the security communication protocol; The processing module is used for detecting train equipment.

11. The train control device using redundant multi-channels according to claim 9, characterized in that: The first processing module and the second processing module transmit information by taking 2 as the method.

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