Train tail redundancy communication method and system, storage medium and electronic equipment

Abstract

The invention belongs to the technical field of railway wireless communication, and provides a train tail redundancy communication method and system, a storage medium and electronic equipment, and the method comprises the steps: receiving a first connection state and first signal strength which are fed back after a first communication radio station establishes communication connection with a wireless communication network, receiving a second connection state and second signal strength which are fed back after the second communication radio station establishes communication connection with the wireless communication network; according to the comparison result of the first connection state, the second connection state, the first signal strength and the second signal strength, one communication radio station is selected from the first communication radio station and the second communication radio station to communicate with the train head device through the wireless communication network, and the other communication radio station is powered off for standby application. According to the train tail redundancy communication method disclosed by the invention, the communication radio station with good signal strength is selected to establish communication connection with the train head equipment, so that the communication quality is improved; the unused communication radio station is powered off, so that the reliability of the train tail device is improved, and the power consumption of the train tail device is reduced.

Description

Technical Field

[0001] The present invention belongs to the technical field of railway wireless communication, and in particular, relates to a redundant communication method, system, storage medium and electronic equipment at the end of a train. Background Art

[0002] The train tail safety protection device (referred to as the train tail device) is a device that mainly monitors the pressure of the air duct at the rear of the train. It sends the collected information such as the wind pressure value at the rear of the train to the head device (which controls the train operation) through wireless network communication. The head device judges the integrity of the train based on the information reported by the train tail device (for example, if there is wind pressure at the front of the train but not at the rear of the train, it means that the air duct is broken and there is a risk of car hook breakage); or if the threshold time is exceeded and the head device does not receive the communication information from the train tail device, it will also be judged that the train integrity is lost.

[0003] At present, the safety protection device at the rear of the train generally adopts a dual-radio redundant configuration. The communication radio is used to access the GSM-R (Global System for Mobile Communications) or 4G, 5G network, and switches to another communication radio after a communication radio fails. However, the communication quality of the communication radio is reduced, which may still lead to poor communication. If it is not switched to another radio in time, the wireless communication between the head equipment and the tail equipment will time out, and the train integrity will be reported to be lost.

[0004] At the same time, the tail device usually relies on batteries to work, so the power consumption of the tail device cannot be too high, otherwise it will affect the use of long routes, and the radio is a component with high power consumption. Summary of the invention

[0005] To solve the above problems, the present invention provides a redundant communication method, system, storage medium and electronic device at the end of a train, which judges the signal strength of two communication stations after they are connected to the wireless communication network, selects one communication station to communicate with the head device of the train, and powers off the other communication station for cold standby. When the communication of the working communication station is abnormal, a new communication station is determined to communicate with the head device of the train, which can improve the reliability of the tail device while reducing the power consumption of the tail device.

[0006] The present invention is achieved through the following technical solutions: In a first aspect, an embodiment of the present disclosure provides a tail redundancy communication method, the method comprising: receiving a first connection state and a first signal strength fed back by the first communication station after establishing a communication connection with the wireless communication network, and receiving a second connection state and a second signal strength fed back by the second communication station after establishing a communication connection with the wireless communication network; According to the comparison result of the first connection state, the second connection state, the first signal strength and the second signal strength, one communication station is selected from the first communication station and the second communication station to communicate with the head device through the wireless communication network, and the other communication station is powered off and kept in standby.

[0007] Furthermore, When it is determined that the first connection state and the second connection state are both in available states, comparing the first signal strength and the second signal strength to determine a comparison result; If the signal strength difference between the first signal strength and the second signal strength in the comparison result is less than a preset threshold, randomly selecting one communication station from the first communication station and the second communication station to communicate with the first device through the wireless communication network, and the other communication station is powered off and kept in standby mode; If the signal strength difference between the first signal strength and the second signal strength in the comparison result is greater than the preset threshold, the communication station with greater signal strength is selected from the first communication station and the second communication station to communicate with the head device through the wireless communication network, the other communication station is powered off, and abnormal information is recorded.

[0008] Furthermore, When it is determined that only one of the first connection state and the second connection state is in an available state, the communication station with the available connection state is selected to communicate with the head device through the wireless communication network, the other communication station is powered off, and abnormal information is recorded.

[0009] Furthermore, If it is determined that both the first connection state and the second connection state are unavailable and no fault report is received from the first communication station and the second communication station, abnormal information of the first communication station and the second communication station is recorded, and a preset time threshold is waited; wherein, The preset time threshold is less than the system time threshold at which the failure of the head device to receive the information reported by the rear redundant communication system is regarded as a loss of train integrity.

[0010] Furthermore, When the communication connection between the redundant communication system at the end of the train and the equipment at the head of the train is disconnected, query the connection status and signal strength between the currently used communication station and the wireless communication network; If there is no abnormality in the connection state and signal strength between the currently used communication station and the wireless communication network, the currently used communication station attempts to communicate with the first device again through the wireless communication network; If the connection status and signal strength between the currently used communication station and the wireless communication network are abnormal, the first communication station and the second communication station are controlled to be powered on, and one communication station is determined from the first communication station and the second communication station to communicate with the head device through the wireless communication network.

[0011] In a second aspect, based on the same inventive concept, an embodiment of the present disclosure further provides a tail-of-column redundant communication system, the system comprising: a processing unit, a first communication station and a second communication station, the first communication station and the second communication station being electrically connected to the processing unit; After the first communication station establishes a communication connection with the wireless communication network, the first connection state and the first signal strength with the wireless communication network are fed back to the processing unit; after the second communication station establishes a communication connection with the wireless communication network, the second connection state and the second signal strength with the wireless communication network are fed back to the processing unit; The processing unit receives the first connection status and the first signal strength fed back by the first communication station, receives the second connection status and the second signal strength fed back by the second communication station, and according to the comparison result of the first connection status, the second connection status, the first signal strength and the second signal strength, selects one communication station from the first communication station and the second communication station to communicate with the head device through the wireless communication network, and the other communication station is powered off and kept in standby.

[0012] Furthermore, When the first connection state and the second connection state are both in available states, the processing unit compares the first signal strength and the second signal strength to determine a comparison result; If the signal strength difference between the first signal strength and the second signal strength in the comparison result is less than a preset threshold, the processing unit randomly selects one communication station from the first communication station and the second communication station to communicate with the first device through the wireless communication network, and the other communication station is powered off and kept in standby mode; If the signal strength difference between the first signal strength and the second signal strength in the comparison result is greater than the preset threshold, the processing unit selects the communication station with greater signal strength from the first communication station and the second communication station to communicate with the head device through the wireless communication network, the other communication station is powered off, and abnormal information is recorded.

[0013] Furthermore, When only one of the first connection state and the second connection state is in an available state, the processing unit selects the communication station with the available connection state to communicate with the first device through the wireless communication network, and the other communication station is powered off and records abnormal information.

[0014] Furthermore, When the first connection state and the second connection state are both unavailable states, and neither the first communication station nor the second communication station reports a fault to the processing unit, abnormal information of the first communication station and the second communication station is recorded, and a preset time threshold is waited for; wherein the preset time threshold is less than the system time threshold at which the train integrity is considered to be lost if the head device of the train does not receive the information reported by the redundant communication system at the end of the train.

[0015] Furthermore, When the communication connection between the redundant communication system at the end of the train and the equipment at the head of the train is disconnected, the processing unit queries the connection status and signal strength between the currently used communication station and the wireless communication network; If there is no abnormality in the connection state and signal strength between the currently used communication station and the wireless communication network, the currently used communication station attempts to communicate with the first device again through the wireless communication network; If the connection status and signal strength between the currently used communication station and the wireless communication network are abnormal, the processing unit controls the first communication station and the second communication station to power on, and the processing unit again determines a communication station from the first communication station and the second communication station to communicate with the first device through the wireless communication network.

[0016] On the third aspect, based on the same inventive concept, the embodiment of the present disclosure further provides a computer-readable storage medium storing one or more programs, which, when executed, can implement the aforementioned tail-of-column redundant communication method.

[0017] In a fourth aspect, based on the same inventive concept, an embodiment of the present disclosure further provides an electronic device, including a processor, a communication interface, the aforementioned computer-readable storage medium, and a communication bus. The processor, the communication interface, and the computer-readable storage medium communicate with each other via the communication bus. The processor is used to execute the program stored in the aforementioned computer-readable storage medium.

[0018] Compared with the prior art, the present invention has the following advantages: 1. Select a communication station with good communication signal strength in the wireless communication network to establish a communication connection with the head equipment, thereby improving the communication quality between the tail equipment and the head equipment; 2. The unused communication radio stations are powered off, which improves the reliability of the tail device and reduces its power consumption.

[0019] 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 pointed out in the description, claims and drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] 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.

[0021] Figure 1 A schematic diagram of communication between a column tail and a column head provided in an embodiment of the present disclosure; Figure 2 A flow chart of a redundant communication method at the end of a column provided by an embodiment of the present disclosure; Figure 3 A block diagram of a tail-of-column redundant communication system provided in an embodiment of the present disclosure. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solution and advantages of the embodiments of the present disclosure clearer, the technical solution in the embodiments of the present disclosure will be clearly and completely described below in conjunction with the drawings in the embodiments of the present disclosure. Obviously, the described embodiments are part of the embodiments of the present disclosure, not all of the embodiments. Based on the embodiments in the present disclosure, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present disclosure.

[0023] In the present disclosure, Figure 1 A schematic diagram of communication between a column tail and a column head provided in an embodiment of the present disclosure is shown in FIG. Figure 1 As shown, the last car of the train is equipped with a train tail safety protection device (referred to as the train tail device), which is mainly used to monitor the air duct pressure at the rear of the train, and send the collected information such as the wind pressure value at the rear of the train to the head device (controlling the train operation) through the wireless communication network. The head device determines the integrity of the train based on the information reported by the tail device. For example, if there is wind pressure at the front of the train and no wind pressure at the rear of the train, it means that the air duct is broken and there is a risk of car hook breakage. In addition, if the head device does not receive the communication information reported by the tail device for more than a time threshold, it is also determined that the train integrity is lost.

[0024] In the disclosed embodiment, the tail device includes a functional system such as a detection module or a detection platform for monitoring the air duct pressure at the rear of the train, and also includes a redundant communication system at the tail of the train mainly used for wireless communication with the head device. The redundant communication system at the tail of the train includes two communication radio stations. If one communication radio station has an abnormality when communicating with the head device, the other communication radio station is replaced to work. The operation of the tail device mainly relies on batteries. Therefore, the power consumption of the tail device cannot be too high, otherwise it will affect the long-distance travel of the train. Therefore, the redundant communication system at the tail of the train device needs to maintain low power consumption while satisfying the requirements of automatically selecting a communication radio station to work and actively switching when an abnormality occurs.

[0025] First, Figure 2 A flow chart of a tail redundant communication method provided by the present disclosure is as follows: Figure 2 As shown, based on the same inventive concept, the embodiment of the present disclosure also provides a tail redundant communication method, including: S1: receiving a first connection state and a first signal strength fed back by a first communication station after establishing a communication connection with a wireless communication network, and receiving a second connection state and a second signal strength fed back by a second communication station after establishing a communication connection with a wireless communication network; S2: According to the comparison result of the first connection state, the second connection state, the first signal strength and the second signal strength, one communication station is selected from the first communication station and the second communication station to communicate with the head device through the wireless communication network, and the other communication station is powered off and kept in standby.

[0026] It should be understood that the first connection state and the first signal strength, the second connection state and the second signal strength are all information sent by the first communication station and the second communication station to the processing unit. The first connection state and the first signal strength, the second connection state and the second signal strength can be digital signals or instructions sent to the processing unit through a communication cable or a serial port. The processing unit determines the signal strength, connection state and other information by obtaining the digital signals or instructions sent by the first communication station and the second communication station. The wireless communication network includes an operator network. When the wireless communication network is an operator network, the digital signals or instructions sent by the first communication station and the second communication station also include the SIM (Subscriber Identity Module) status, that is, whether the SIM is ready.

[0027] The processing unit is integrated in the electronic device or is itself an electronic device, and is electrically connected to the first communication station and the second communication station, and together constitutes a redundant communication system at the end of the column, which is arranged in the end-of-column device to realize communication between the end-of-column device and the head-of-column device. The processing unit can also be electrically connected to other modules in the end-of-column device.

[0028] In some examples, a communication station is selected to communicate with the first device via a wireless communication network, and another communication station is powered off for standby, specifically including: S21: When it is determined that the first connection state and the second connection state are both available, compare the first signal strength and the second signal strength to determine a comparison result.

[0029] S211: If the signal strength difference between the first signal strength and the second signal strength in the comparison result is less than a preset threshold, randomly select one communication station from the first communication station and the second communication station to communicate with the head device through the wireless communication network, and the other communication station is powered off and kept in standby mode; S212: If the signal strength difference between the first signal strength and the second signal strength in the comparison result is greater than a preset threshold, the communication station with greater signal strength is selected from the first communication station and the second communication station to communicate with the head device through the wireless communication network, and the other communication station is powered off and kept in standby mode, and abnormal information is recorded.

[0030] Specifically, under normal circumstances, the abnormal information notifies the operator to perform maintenance of the communication station in a timely manner through the human-computer interaction interface, and the abnormal information can be directly recorded in the corresponding communication station or in the processing unit, which is not further limited here. When the difference in signal strength between the first signal strength and the second signal strength is greater than a preset threshold, it indicates that the communication station with a smaller signal strength has performance degradation, for example: the antenna of the communication station is not properly connected, the communication station signal is attenuated, etc.

[0031] It should be understood that when the difference between the first signal strength and the second signal strength is greater than the preset threshold, there is also a situation where the communication quality of the communication station with a smaller signal strength fluctuates briefly, for example: signal interference caused by the different installation locations of the two stations, or the two stations use different communication standards, and the communication standards covered by different railway areas are different. Therefore, the communication station with a smaller signal strength can still be in a standby state.

[0032] In some examples, a communication station is selected to communicate with the first device via a wireless communication network, and another communication station is powered off for standby, specifically including: S22: When judging the first connection state and the second connection state, and only one of them is in an available state, the communication station with the available connection state is selected to communicate with the head device through the wireless communication network, and the other communication station is powered off and kept in standby state, and abnormal information is recorded.

[0033] Specifically, under normal circumstances, the abnormal information notifies the operator through the human-computer interaction interface to perform communication station maintenance in a timely manner. The abnormal information can be directly recorded in the corresponding communication station or in the processing unit, and no further limitation is made here. The connection status is unavailable, indicating that the corresponding communication station has not successfully established a communication connection with the wireless communication network, and the communication station has performance degradation or failure.

[0034] It should be understood that the communication quality of the communication station with an unavailable connection status may fluctuate temporarily, for example, due to signal interference caused by the different installation locations of the two stations, or the two stations use different communication standards, and the communication standards covered by different railway areas are different. Therefore, the communication station with an unavailable connection status can still be in standby status.

[0035] In some examples, a communication station is selected to communicate with the first device via a wireless communication network, and another communication station is powered off for standby, specifically including: S23: if the first connection state and the second connection state are both unavailable and no fault report from the first communication station or the second communication station is received, abnormal information of the first communication station and the second communication station is recorded and a preset time threshold is waited; wherein, A preset time threshold is a system time threshold below which the train integrity is considered to be lost if the head device does not receive the information reported by the rear redundant communication system.

[0036] Furthermore, a preset time threshold is set for waiting for the first communication station and the second communication station to attempt to establish a communication connection with the wireless communication network, mainly considering the current location of the train, which may be a network blind spot, to prevent inappropriate error reporting or premature judgment of a fault, and to avoid affecting the establishment of subsequent communication connections. The function of the head device of the train to communicate with the redundant communication system at the end of the train includes confirming the integrity of the train. Therefore, a system time threshold is preset. If the system time threshold is exceeded, the head device of the train still does not receive the information reported by the redundant communication system at the end of the train, and it is regarded as the loss of train integrity. Therefore, in order to avoid the disconnection of the head device and the redundant communication system at the end of the train for too long, which affects the judgment of the integrity of the train, the preset time threshold needs to be less than the system time threshold.

[0037] In the disclosed embodiment, the communication protocol used by the first communication station and the second communication station to communicate with the head device is the UDP (User Datagram Protocol) protocol or the TCP (Transmission Control Protocol) protocol, and the head device and the first communication station or the second communication station use the UDP protocol or the TCP protocol for data communication.

[0038] In some examples, the tail-of-column redundant communication method further includes: S3: When the communication connection between the redundant communication system at the end of the train and the equipment at the head of the train is disconnected, the connection status and signal strength of the currently used communication station and the wireless communication network are queried.

[0039] S31: If there is no abnormality in the connection state and signal strength between the currently used communication station and the wireless communication network, the currently used communication station attempts to communicate with the head device again through the wireless communication network.

[0040] Specifically, when the communication connection between the redundant communication system at the end of the column and the device at the head of the column is disconnected, the processing unit determines whether the connection status between the currently used communication station (the first communication station or the second communication station) and the wireless communication network is available, and whether the signal strength meets the connection conditions; if the connection status between the currently used communication station and the wireless communication network is available, and the signal strength meets the connection conditions, it is determined that there is no abnormality in the connection status and signal strength between the currently used communication station and the wireless communication network. At this time, the currently used communication station attempts to communicate with the head of the column device again through the wireless communication network.

[0041] S32: If the connection status and signal strength between the currently used communication station and the wireless communication network are abnormal, the first communication station and the second communication station are controlled to be powered on, and one communication station is determined from the first communication station and the second communication station to communicate with the head device through the wireless communication network.

[0042] Specifically, when the communication connection between the redundant communication system at the end of the column and the first device in the column is disconnected, the processing unit determines whether the connection status between the currently used communication station (the first communication station or the second communication station) and the wireless communication network is available, and whether the signal strength meets the connection conditions; if the connection status between the currently used communication station and the wireless communication network is not available, or the signal strength does not meet the connection conditions, it is determined that the connection status and signal strength between the currently used communication station and the wireless communication network are abnormal. At this time, the processing unit uses the method of step S1 and step S2 again to determine a communication station from the first communication station and the second communication station to communicate with the first device in the column through the wireless communication network. In this way, when the communication quality of the communication station decreases and the communication connection between the redundant communication system at the end of the column and the first device in the column is disconnected, a communication station is timely reselected from the first communication station and the second communication station to establish a communication connection with the first device in the column.

[0043] In some examples, if the redundant communication system at the end of the column and the device at the head of the column do not communicate within a preset time threshold and the communication station does not actively report the abnormal situation to the processing unit, the first communication station and the second communication station are powered on again, and the processing unit re-determines a communication station to communicate with the device at the head of the column through the wireless communication network.

[0044] The tail redundant communication method in the embodiment of the present disclosure has the following advantages: 1. Select a communication station with good communication signal strength in the wireless communication network to establish a communication connection with the head equipment, thereby improving the communication quality between the tail equipment and the head equipment; 2. The unused communication radio stations are powered off, which improves the reliability of the tail device and reduces its power consumption.

[0045] Second, Figure 3 A block diagram of a redundant communication system at the end of a column provided by an embodiment of the present disclosure is shown in FIG. Figure 3 As shown, the embodiment of the present disclosure provides a redundant communication system at the end of a train, including: a processing unit, a first communication station and a second communication station. The first communication station and the second communication station are connected to the processing unit for communication, and the first communication station and the second communication station communicate wirelessly with the head device of the train under the control of the processing unit. After being powered on, the first communication station and the second communication station are initialized; after the first communication station and the second communication station complete the initialization, they establish a communication connection with the wireless communication network and feedback the connection status to the processing unit. The connection status includes the connection state and the signal strength.

[0046] After the first communication station establishes a communication connection with the wireless communication network, it feeds back a first connection status and a first signal strength with the wireless communication network to the processing unit; after the second communication station establishes a communication connection with the wireless communication network, it feeds back a second connection status and a second signal strength with the wireless communication network to the processing unit.

[0047] The processing unit receives a first connection status and a first signal strength fed back by the first communication station, and receives a second connection status and a second signal strength fed back by the second communication station. Based on a comparison result of the first connection status, the second connection status, the first signal strength, and the second signal strength, the processing unit selects one communication station from the first communication station and the second communication station to communicate with the head device through the wireless communication network, and the other communication station is powered off and kept in standby.

[0048] In the embodiment of the present disclosure, when the first connection state between the first communication station and the wireless communication network and the second connection state between the second communication station and the wireless communication network are both in an available state, the processing unit compares the first signal strength between the first communication station and the wireless communication network and the second signal strength between the second communication station and the wireless communication network to determine a comparison result; If the signal strength difference between the first signal strength and the second signal strength in the comparison result is less than a preset threshold, the processing unit randomly selects one communication station from the first communication station and the second communication station to communicate with the first device through the wireless communication network, and the other communication station is powered off and kept in standby.

[0049] If the difference in signal strength between the first signal strength and the second signal strength in the comparison result is greater than a preset threshold, the processing unit selects the communication station with greater signal strength from the first communication station and the second communication station to communicate with the head device through the wireless communication network, and the other communication station is powered off for standby, and records abnormal information. Usually, the abnormal information notifies the operator to perform communication station maintenance in a timely manner through the human-computer interaction interface, and the abnormal information can be directly recorded in the corresponding communication station or in the processing unit, which is not further limited here.

[0050] In the disclosed embodiment, when the signal strength difference between the first signal strength and the second signal strength is greater than a preset threshold, it indicates that the communication station with the smaller signal strength has performance degradation, for example: the antenna of the communication station is not properly connected, the communication station signal is attenuated, etc.

[0051] It should be understood that when the difference between the first signal strength and the second signal strength is greater than the preset threshold, there is also a situation where the communication quality of the communication station with a smaller signal strength fluctuates briefly, for example: signal interference caused by the different installation locations of the two stations, or the two stations use different communication standards, and the communication standards covered by different railway areas are different. Therefore, the communication station with a smaller signal strength can still be in a standby state.

[0052] In the disclosed embodiment, when only one of the first connection state between the first communication station and the wireless communication network and the second connection state between the second communication station and the wireless communication network is in an available state, the processing unit selects the communication station with the available connection state to communicate with the head device through the wireless communication network, and the other communication station is powered off for standby, and records abnormal information. Usually, the abnormal information notifies the operator to perform maintenance on the communication station in a timely manner through the human-computer interaction interface, and the abnormal information can be directly recorded in the corresponding communication station or in the processing unit, and no further limitation is made here.

[0053] In the disclosed embodiment, the connection status is unavailable, indicating that the corresponding communication station has not successfully established a communication connection with the wireless communication network, and the communication station has performance degradation or failure.

[0054] It should be understood that the communication quality of the communication station with an unavailable connection status may fluctuate temporarily, for example, due to signal interference caused by the different installation locations of the two stations, or the two stations use different communication standards, and the communication standards covered by different railway areas are different. Therefore, the communication station with an unavailable connection status can still be in standby status.

[0055] In the embodiment of the present disclosure, the first connection state between the first communication station and the wireless communication network, and the second connection state between the second communication station and the wireless communication network, are both unavailable states, and neither the first communication station nor the second communication station reports the fault to the processing unit, then the abnormal information of the first communication station and the second communication station is recorded, and the preset time threshold is waited; wherein the preset time threshold is less than the system time threshold at which the failure of the head device of the train to receive the information reported by the redundant communication system at the end of the train is regarded as the loss of train integrity.

[0056] Furthermore, a preset time threshold is set for waiting for the first communication station and the second communication station to attempt to establish a communication connection with the wireless communication network, mainly considering the current location of the train, which may be a network blind spot, to prevent inappropriate error reporting or premature judgment of a fault, and to avoid affecting the establishment of subsequent communication connections. The function of the head device of the train to communicate with the redundant communication system at the end of the train includes confirming the integrity of the train. Therefore, a system time threshold is preset. If the system time threshold is exceeded, the head device of the train still does not receive the information reported by the redundant communication system at the end of the train, and it is regarded as the loss of train integrity. Therefore, in order to avoid the disconnection of the head device and the redundant communication system at the end of the train for too long, which affects the judgment of the integrity of the train, the preset time threshold needs to be less than the system time threshold.

[0057] In the disclosed embodiment, the communication protocol used by the first communication station and the second communication station to communicate with the head device is the UDP (User Datagram Protocol) protocol or the TCP (Transmission Control Protocol) protocol, and the head device and the first communication station or the second communication station use the UDP protocol or the TCP protocol for data communication.

[0058] In the disclosed embodiment, when the communication connection between the redundant communication system at the end of the column and the device at the head of the column is disconnected, the processing unit queries the connection status and signal strength between the currently used communication station and the wireless communication network; if there is no abnormality in the connection status and signal strength between the currently used communication station and the wireless communication network, the currently used communication station attempts to communicate with the device at the head of the column again through the wireless communication network. When the communication connection between the redundant communication system at the end of the column and the device at the head of the column is disconnected, the processing unit determines whether the connection status between the currently used communication station (the first communication station or the second communication station) and the wireless communication network is available, and whether the signal strength meets the connection conditions; if the connection status between the currently used communication station and the wireless communication network is available, and the signal strength meets the connection conditions, it is determined that there is no abnormality in the connection status and signal strength between the currently used communication station and the wireless communication network, and at this time, the currently used communication station attempts to communicate with the device at the head of the column again through the wireless communication network.

[0059] In the disclosed embodiment, when the communication connection between the redundant communication system at the end of the column and the first device is disconnected, the processing unit inquires about the connection status and signal strength of the currently used communication station and the wireless communication network; if the connection status and signal strength of the currently used communication station and the wireless communication network are abnormal, the processing unit controls the first communication station and the second communication station to be powered on, and the processing unit again determines one communication station from the first communication station and the second communication station to communicate with the first device through the wireless communication network. When the communication connection between the redundant communication system at the end of the column and the first device is disconnected, the processing unit determines whether the connection status of the currently used communication station (the first communication station or the second communication station) and the wireless communication network is available, and whether the signal strength meets the connection condition; if the connection status of the currently used communication station and the wireless communication network is not available, or the signal strength does not meet the connection condition, it is determined that the connection status and signal strength of the currently used communication station and the wireless communication network are abnormal, and at this time, the processing unit again determines one communication station from the first communication station and the second communication station to communicate with the first device through the wireless communication network based on the comparison result of the first connection status, the second connection status, the first signal strength and the second signal strength.

[0060] In the disclosed embodiment, if the redundant communication system at the end of the column and the device at the head of the column do not communicate with each other within a preset time threshold, and the communication station does not actively report the abnormal situation to the processing unit, the first communication station and the second communication station are powered on again, and the processing unit re-determines a communication station to communicate with the device at the head of the column through the wireless communication network.

[0061] On the third aspect, based on the same inventive concept, the embodiment of the present disclosure further provides a computer-readable storage medium storing one or more programs, which, when executed, can implement the aforementioned tail-of-column redundant communication method.

[0062] In a fourth aspect, based on the same inventive concept, an embodiment of the present disclosure further provides an electronic device, including a processor, a communication interface, the aforementioned computer-readable storage medium, and a communication bus. The processor, the communication interface, and the computer-readable storage medium communicate with each other via the communication bus. The processor is used to execute the program stored in the aforementioned computer-readable storage medium, and accordingly, the aforementioned processing unit can also be integrated in the electronic device and electrically connected to the first communication station and the second communication station.

[0063] It should be noted that the electrical connection between the above-mentioned units does not necessarily mean the connection between lines, and an indirect connection method can be applied to the embodiments of the present disclosure as long as the purpose of the present disclosure is achieved.

[0064] Although the present disclosure has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present disclosure.

Claims

1. A tail redundant communication method, characterized in that: The method comprises: receiving a first connection state and a first signal strength fed back by the first communication station after establishing a communication connection with the wireless communication network, and receiving a second connection state and a second signal strength fed back by the second communication station after establishing a communication connection with the wireless communication network; According to the comparison result of the first connection state, the second connection state, the first signal strength and the second signal strength, one communication station is selected from the first communication station and the second communication station to communicate with the head device through the wireless communication network, and the other communication station is powered off and kept in standby.

2. The method according to claim 1, characterized in that The method of selecting a communication station to communicate with the first device via a wireless communication network and disconnecting another communication station for standby use comprises: When it is determined that the first connection state and the second connection state are both in available states, comparing the first signal strength and the second signal strength to determine a comparison result; If the signal strength difference between the first signal strength and the second signal strength in the comparison result is less than a preset threshold, randomly selecting one communication station from the first communication station and the second communication station to communicate with the first device through the wireless communication network, and the other communication station is powered off and kept in standby mode; If the signal strength difference between the first signal strength and the second signal strength in the comparison result is greater than the preset threshold, the communication station with greater signal strength is selected from the first communication station and the second communication station to communicate with the head device through the wireless communication network, the other communication station is powered off, and abnormal information is recorded.

3. The method according to claim 1, characterized in that The method of selecting a communication station to communicate with the first device via a wireless communication network and disconnecting another communication station for standby use comprises: When it is determined that only one of the first connection state and the second connection state is in an available state, the communication station with the available connection state is selected to communicate with the head device through the wireless communication network, the other communication station is powered off, and abnormal information is recorded.

4. The method according to claim 1, characterized in that: The method of selecting a communication station to communicate with the first device via a wireless communication network and disconnecting another communication station for standby use comprises: If it is determined that both the first connection state and the second connection state are unavailable and no fault report is received from the first communication station and the second communication station, abnormal information of the first communication station and the second communication station is recorded, and a preset time threshold is waited; wherein, The preset time threshold is less than the system time threshold at which the failure of the head device to receive the information reported by the rear redundant communication system is regarded as a loss of train integrity.

5. The method according to any one of claims 1 to 4, characterized in that: The method further comprises: When the communication connection between the redundant communication system at the end of the train and the equipment at the head of the train is disconnected, query the connection status and signal strength between the currently used communication station and the wireless communication network; If there is no abnormality in the connection state and signal strength between the currently used communication station and the wireless communication network, the currently used communication station attempts to communicate with the first device again through the wireless communication network; If the connection status and signal strength between the currently used communication station and the wireless communication network are abnormal, the first communication station and the second communication station are controlled to be powered on, and one communication station is determined from the first communication station and the second communication station to communicate with the head device through the wireless communication network.

6. A redundant communication system at the end of a train, characterized in that: The system comprises: a processing unit, a first communication station and a second communication station, wherein the first communication station and the second communication station are electrically connected to the processing unit; After the first communication station establishes a communication connection with the wireless communication network, the first connection state and the first signal strength with the wireless communication network are fed back to the processing unit; after the second communication station establishes a communication connection with the wireless communication network, the second connection state and the second signal strength with the wireless communication network are fed back to the processing unit; The processing unit receives the first connection status and the first signal strength fed back by the first communication station, receives the second connection status and the second signal strength fed back by the second communication station, and according to the comparison result of the first connection status, the second connection status, the first signal strength and the second signal strength, selects one communication station from the first communication station and the second communication station to communicate with the head device through the wireless communication network, and the other communication station is powered off and kept in standby.

7. The system according to claim 6, characterized in that When the first connection state and the second connection state are both in available states, the processing unit compares the first signal strength and the second signal strength to determine a comparison result; If the signal strength difference between the first signal strength and the second signal strength in the comparison result is less than a preset threshold, the processing unit randomly selects one communication station from the first communication station and the second communication station to communicate with the first device through the wireless communication network, and the other communication station is powered off and kept in standby mode; If the signal strength difference between the first signal strength and the second signal strength in the comparison result is greater than the preset threshold, the processing unit selects the communication station with greater signal strength from the first communication station and the second communication station to communicate with the head device through the wireless communication network, the other communication station is powered off, and abnormal information is recorded.

8. The system according to claim 6, characterized in that When only one of the first connection state and the second connection state is in an available state, the processing unit selects the communication station with the available connection state to communicate with the first device through the wireless communication network, and the other communication station is powered off and records abnormal information.

9. The system according to claim 6, characterized in that When the first connection state and the second connection state are both unavailable states, and neither the first communication station nor the second communication station reports a fault to the processing unit, abnormal information of the first communication station and the second communication station is recorded, and a preset time threshold is waited for; wherein the preset time threshold is less than the system time threshold at which the failure of the head device of the train to receive information reported by the redundant communication system at the end of the train is regarded as a loss of train integrity.

10. The system according to any one of claims 6 to 9, characterized in that: When the communication connection between the redundant communication system at the end of the train and the equipment at the head of the train is disconnected, the processing unit queries the connection status and signal strength between the currently used communication station and the wireless communication network; If there is no abnormality in the connection state and signal strength between the currently used communication station and the wireless communication network, the currently used communication station attempts to communicate with the first device again through the wireless communication network; If the connection status and signal strength between the currently used communication station and the wireless communication network are abnormal, the processing unit controls the first communication station and the second communication station to power on, and the processing unit again determines a communication station from the first communication station and the second communication station to communicate with the head device through the wireless communication network.

11. A computer-readable storage medium storing one or more programs, characterized in that: When the one or more programs are executed, the tail-of-column redundant communication method described in any one of claims 1 to 5 can be implemented.

12. An electronic device comprising a processor, a communication interface, the computer-readable storage medium of claim 11, and a communication bus; wherein: The processor, the communication interface, and the computer-readable storage medium communicate with each other via a communication bus; It is characterized in that The processor is configured to execute a program stored in a computer-readable storage medium.

Images