A real-time rescue method and system applied to rail transit trains

Abstract

The present invention provides a real-time rescue method and system for rail transit trains. A main electronic device is selected from the electronic devices related to the rail train; all feedback information is summarized by the main electronic device and uploaded to the rescue center. The rescue center synchronizes all the feedback information according to the generation time of the feedback information of the main electronic device, and screens out the effective feedback information from it to formulate a rescue strategy, which is then sent to each rescue electronic device, so that the rescue personnel carrying the rescue electronic device can reach the designated position according to the rescue strategy for rescue. Since the feedback information for formulating the rescue strategy in the present invention comes from the environmental information of the disaster area and the relevant information of the rail train, and all the information is synchronized using the generation time of the feedback information of the main electronic device with the least resources and high efficiency, the reference time of the feedback information of the main electronic device and other electronic devices is consistent, making the rescue strategy more reasonable, thus reducing the rescue difficulty.

Description

Technical Field

[0001] The present invention belongs to the technical field of rail train rescue, and particularly relates to a real-time rescue method and system for rail transit trains. Background Art

[0002] Rail trains are popular among people due to their speed, safety, etc., and are one of the convenient travel modes. However, geological disasters, as unpredictable natural phenomena, often pose great challenges to the operation of rail trains.

[0003] In mountainous areas or areas with complex geological conditions, continuous heavy rainfall or rainstorms are likely to trigger landslides and mudslides. These disasters will quickly cover the railway tracks, making it impossible for trains to pass, and even causing serious consequences such as train derailment and overturning. For example, a certain D2809 passenger train collided with a mudslide that suddenly slid and invaded the line before entering Rongjiang Station on the Guiyang-Guangzhou line, resulting in the derailment of the carriage and causing casualties. Ground subsidence is usually caused by sudden changes in the groundwater level, the expansion of underground cavities, or insufficient soil bearing capacity. For rail trains, ground subsidence will directly lead to track deformation and subsidence, thereby affecting the driving safety of trains. In a certain modern tram project, due to unqualified subgrade fillers and the influence of continuous heavy rainfall, the tram derailed, causing losses to people and property.

[0004] In order to ensure the life and property safety of people taking rail trains, the existing technologies have mainly studied various solutions from three aspects: disaster early warning and monitoring, track and subgrade protection, and emergency response and rescue. Disaster early warning and monitoring are treatment means before the occurrence of disasters and have lagginess, while natural disasters are often of a sudden nature. The effect of track and subgrade protection on natural disasters is limited, and emergency response and rescue are often important treatment means for disasters.

[0005] If a natural disaster occurs and the operation of a rail train is abnormal, the monitoring center of the traffic control department monitors the abnormal operation of the rail train or local departments in the driving area report disaster information. These information sources are diverse, such as geological information, track information, surrounding environment information, etc., reported by different departments. The command center needs to ensure the consistency and effectiveness of the information before it can reasonably dispatch rescue materials and rescue personnel. During the reporting process, a large amount of information comes in one after another at different times, and it may be difficult to ensure time consistency through communication transmission. Moreover, natural disasters may occur again. The previously reported geological information may have expired, and the new geological information has not arrived yet. Other information is needed to understand the current situation in a timely manner, which will increase the time for formulating a rescue plan in the early stage of rescue. Summary of the Invention

[0006] To solve the above problems existing in the prior art, the present invention provides a real-time rescue method and system for rail transit trains. The technical problems to be solved by the present invention are achieved through the following technical solutions:

[0007] In a first aspect, the present invention provides a real-time rescue method for rail transit trains, including:

[0008] S100, select at least one main electronic device in both the disaster occurrence area where the rail train is located and the electronic devices of the monitoring center;

[0009] S200, regularly send a clock synchronization command to the main electronic device, so that the main electronic device generates a clock synchronization signal in response to the clock synchronization command, and compresses the clock synchronization signal, its own feedback information, the feedback information of other electronic devices, and the generation time of the feedback information, and then uploads the compressed data packet;

[0010] Wherein, the feedback information is real-time information for monitoring the rail train under geological disasters, and the real-time information includes: geological information, environmental information, the operation information of the rail train, and the overall traffic information of the disaster occurrence area;

[0011] S300, receive the feedback information reported by all electronic devices and the compressed data packet uploaded by the main electronic device, and perform clock synchronization on all reported feedback information based on the generation time of the feedback information of the main electronic device to obtain all clock-synchronized feedback information;

[0012] S400, determine whether the clocks of the electronic devices in the monitoring center and the electronic devices in the disaster occurrence area are consistent. If not, select the latest feedback information from all the clock-synchronized feedback information as the valid feedback information;

[0013] S500, formulate a rescue strategy using the valid feedback information and send it to each rescue electronic device, so that the rescue personnel carrying the rescue electronic device reach the designated position for rescue according to the rescue strategy.

[0014] In a second aspect, the present invention provides a real-time rescue system for rail transit trains, including:

[0015] A selection module, configured to select at least one main electronic device in both the disaster occurrence area where the rail train is located and the electronic devices of the monitoring center;

[0016] A feedback module, configured to periodically issue a clock synchronization command to the master electronic device, so that the master electronic device generates a clock synchronization signal in response to the clock synchronization command, compress the clock synchronization signal, its own feedback information, and the generation time of the feedback information, and then upload the compressed data packet;

[0017] Wherein, the feedback information is real-time information for monitoring an orbital train under geological disasters, and the real-time information includes: geological information, environmental information, operation information of the orbital train, and overall traffic information of the disaster occurrence area;

[0018] A synchronization module, configured to receive the feedback information reported by all electronic devices and the compressed data packet uploaded by the master electronic device, and perform clock synchronization on all reported feedback information based on the generation time of the feedback information of the master electronic device to obtain all clock-synchronized feedback information;

[0019] A selection module, configured to determine whether the clocks of the electronic devices in the monitoring center and the electronic devices in the disaster occurrence area are consistent. If they are not consistent, select the latest feedback information from all the clock-synchronized feedback information as the valid feedback information;

[0020] A distribution module, configured to formulate a rescue strategy using the valid feedback information and distribute it to each rescue electronic device, so that the rescue personnel carrying the rescue electronic device can reach the designated location for rescue according to the rescue strategy.

[0021] Beneficial effects:

[0022] The present invention provides a real-time rescue method and system applied to rail transit trains. In the electronic devices in the disaster occurrence area where the rail train is located and the monitoring center, at least one master electronic device is selected; all feedback information is summarized and uploaded to the rescue center by using this master electronic device. The rescue center synchronizes all feedback information according to the generation time of the feedback information of the master electronic device, and screens out the valid feedback information from it to formulate a rescue strategy, which is distributed to each rescue electronic device, so that the rescue personnel carrying the rescue electronic device can reach the designated location for rescue according to the rescue strategy. Since the feedback information for formulating the rescue strategy in the present invention comes from the environmental information in the disaster occurrence area and the relevant information of the rail train, all the information is synchronized using the generation time of the feedback information of the master electronic device with the least resources and high efficiency. In this way, the reference time of the feedback information of the master electronic device and other electronic devices is consistent, and different types of feedback information at corresponding moments can be distinguished, making the rescue strategy more reasonable, thereby reducing the rescue difficulty.

[0023] The following will further describe the present invention in detail with reference to the drawings and embodiments. Description of the Drawings

[0024] Figure 1 It is a schematic flow chart of a real-time rescue method for rail transit trains provided by the present invention;

[0025] Figure 2 It is a schematic flow chart of determining the disaster area where the rail train is located provided by the present invention;

[0026] Figure 3 It is a schematic flow chart of implementing step S100 provided by the present invention;

[0027] Figure 4 It is a schematic flow chart of implementing step S200 provided by the present invention;

[0028] Figure 5 It is a schematic flow chart of implementing step S240 provided by the present invention;

[0029] Figure 6 It is a schematic flow chart of implementing step S300 provided by the present invention;

[0030] Figure 7 It is a schematic flow chart of implementing step S350 provided by the present invention;

[0031] Figure 8 It is a schematic flow chart of implementing step S400 provided by the present invention;

[0032] Figure 9 It is a schematic flow chart of implementing step S500 provided by the present invention;

[0033] Figure 10 It is a schematic structural diagram of a real-time rescue system for rail transit trains provided by the present invention. Specific embodiments

[0034] The following further describes the present invention in detail with reference to specific embodiments, but the implementation manners of the present invention are not limited thereto.

[0035] As Figure 1 shown, the present invention provides a real-time rescue method for rail transit trains, including:

[0036] S100, select at least one main electronic device in both the disaster area where the rail train is located and the electronic devices in the monitoring center;

[0037] It should be noted that the monitoring center of the present invention can be the monitoring center of the general transportation department. If an abnormality occurs during the operation of the rail train, it may be due to a natural disaster. The management department at the location of the natural disaster will upload relevant information in a timely manner using electronic devices. Since there are numerous electronic devices in the disaster area and the monitoring center, it is necessary to select the main electronic device from among them to lay the foundation for subsequent information synchronization.

[0038] S200, regularly issue a clock synchronization command to the main electronic device, so that the main electronic device generates a clock synchronization signal in response to the clock synchronization command, compresses the clock synchronization signal, its own feedback information, the feedback information of other electronic devices, and the generation time of the feedback information, and then uploads the compressed data packet after obtaining it;

[0039] Among them, the feedback information is the real-time information of the monitored rail train under geological disasters, and the real-time information includes: geological information, environmental information, the operation information of the rail train, and the overall traffic information of the disaster area;

[0040] It should be noted that since there are numerous electronic devices in each department, multiple main electronic devices may be selected. Due to geographical or hardware reasons, there may be information asynchronization among these electronic devices. This asynchronization does not refer to different reference clocks or timing clocks, but rather the reception asynchronization caused by electronic transmission or communication problems during the front and back sending processes.

[0041] S300, receive the feedback information reported by all electronic devices and the compressed data packet uploaded by the main electronic device, and perform clock synchronization on all reported feedback information based on the generation time of the feedback information of the main electronic device to obtain all the feedback information after clock synchronization;

[0042] It should be noted that the rescue center will perform time calibration, that is, clock synchronization, on all the feedback information after receiving the reported feedback information and the clock synchronization signal. In this way, it can be ensured that the times of the feedback information generated at the same time are consistent. The time accuracy of the feedback information can ensure the accuracy of the summary data summarized by the rescue center, which is beneficial for formulating reasonable rescue strategies.

[0043] S400, determine whether the clocks of the electronic devices in the monitoring center and the electronic devices in the disaster area are consistent. If they are not consistent, select the latest feedback information from all the feedback information after clock synchronization as the valid feedback information;

[0044] It should be noted that if the clocks of the electronic devices in the monitoring center and the disaster area are inconsistent, there may be two types of tags in the subsequent feedback information synchronized by the master electronic device. One type of tag is the clock tag of the master electronic device in the monitoring center, and the other is the clock tag of the master electronic device in the disaster area. In this case, it is necessary to select the latest feedback information. Although the latest feedback information may not be comprehensive, its timeliness is the highest, which can make up for the defect of delayed transmission of other information caused by line interruption.

[0045] S500, formulate a rescue strategy using the effective feedback information and send it to each rescue electronic device, so that the rescue personnel carrying the rescue electronic device can reach the designated location for rescue according to the rescue strategy.

[0046] It should be noted that an effective rescue strategy often needs to be adjusted according to timely information feedback. When the feedback information is summarized in the rescue center, the rescue commanders in the rescue center can quickly and reasonably plan a rescue strategy. Of course, in order to quickly complete the formulation of the rescue strategy, generally a planning algorithm is used to first plan a preliminary rescue strategy, and then dynamically adjust the rescue strategy according to the feedback information and send it to the rescue personnel to facilitate the completion of the rescue.

[0047] Reference Figure 2 , as a specific implementation manner of the present invention, before S100, the real-time rescue method applied to rail transit trains further includes:

[0048] S000, use the monitoring center to send a communication signal to the communication electronic device of the rail train and determine whether a response signal is received. If not, determine the generation time of the nearest response signal fed back by the rail train;

[0049] It should be noted that in a certain extreme situation, the communication electronic device of the present invention is not limited to the electronic device installed on the rail train, but can also be a temporarily deployed electronic device, such as a satellite phone, a satellite positioning device, or even a communication phone. As long as it has positioning or communication functions and can communicate with the outside world and can locate the position of the rail train or monitor the surrounding situation, it is applicable to the application scenario of the present invention.

[0050] It should be noted that if the monitoring center can receive the response signal fed back by the electronic device of the rail train, it can be determined that the electronic device near the rail train is functioning normally. Therefore, information can be continuously obtained from this electronic device. If not, it is necessary to determine the generation time of the nearest response signal, and use this generation time as the critical point to determine the target area where the rail train is located. The reason is that after this generation time, natural disasters may continue to occur, causing the rail train to be completely covered and unable to communicate.

[0051] S001, locate the target area of the rail train at the generation moment, and determine the disaster occurrence area where the rail train is located by using the running speed and the expected running track of the rail train;

[0052] Wherein, the disaster occurrence area is the area that the rail train enters according to the expected running track at the next moment of the generation moment.

[0053] It should be noted that after obtaining the target area of the rail train, the approximate running speed and the expected running track can be determined according to the type of the rail train, so that the specific location of the disaster occurrence area can be located. Of course, this acquisition method can cooperate with satellite images to more restore the occurrence of specific disasters, which provides great help for subsequent rescue.

[0054] Reference Figure 3 , as a specific implementation manner of the present invention, S100 includes:

[0055] S110, determine all the electronic devices related to the rail train in the disaster occurrence area where the rail train is located as the first electronic devices, and determine all the electronic devices of the monitoring center as the second electronic devices;

[0056] S120, construct a first communication topology network by using the communication topology relationship between the first electronic devices and construct a second communication topology network by using the communication topology relationship of the second electronic devices, wherein each communication node of the communication topology network represents an electronic device;

[0057] It should be noted that the communication topology network can be constructed according to the historical communication topology relationship of the electronic devices, so that when issuing an instruction, it can quickly locate which electronic devices are available, which electronic devices are closest to the disaster occurrence area, and which are more conducive to the transmission of rescue strategies.

[0058] S130, select an arbitrary communication node as the root node in both the first communication topology network and the second communication topology network, and issue a communication instruction to other communication nodes so that the communication instruction circulates in the second communication topology network and finally reaches the root node; determine the target path that meets the path conditions among all the paths from the root node back to the root node, and use the electronic device corresponding to the communication node with the least required communication resources on the target path as the main electronic device; wherein, the path condition is the least number of hops or the minimum delay.

[0059] It should be noted that the electronic device is a communication node in the communication topology network, and the root node issues communication instructions. As long as the nodes communicate with each other, the communication instructions can be sequentially transmitted to each node and then returned to the root node. This process is called communication reflux. In this way, there will be multiple target paths during the communication reflux. Since the communication quality in the disaster-stricken area has severely deteriorated, it is necessary to consider communication resources and select the electronic device corresponding to the communication node with the least communication resources. Since there may be multiple target paths that meet the path conditions, and there may also be multiple communication nodes with the least resources, there may also be multiple main electronic devices.

[0060] Reference Figure 4 , as a specific implementation manner of the present invention, S200 includes:

[0061] S210, the rescue center periodically issues a clock synchronization command at a predetermined period and sends the clock synchronization command to the main electronic device in the form of a message frame through the UDP protocol;

[0062] It should be noted that considering the stability of communication transmission and the required resources, the present application uses the UDP protocol to complete the transmission of the clock communication command. When transmitting, the clock synchronization command needs to be packed into a message frame according to the agreed format of the UDP protocol, so that the message frame can be transmitted to the main electronic device stably with the least possible resources.

[0063] S220, each main electronic device receives the message frame and extracts the generation time of the clock synchronization command from the message frame;

[0064] S230, determine whether the generation time extracted by each main electronic device is later than that of other generation times. If so, generate a clock synchronization signal according to the message frame. If not, use the message frame as an alternative message frame and store it in the dynamic cache space;

[0065] It should be noted that if the message frame generation time of the main electronic device is later than that of other electronic devices, it means that other electronic devices may have ignored possible delays such as hardware transmission when determining the generation time of the message frame. Therefore, the selection condition of the main electronic device determines that it is the electronic device with the least required transmission resources and the fastest transmission speed. If the time of this electronic device is instead later than the message frame time of other electronic devices, clock synchronization is required. On the contrary, if it is earlier than the generation time of the message frames of other electronic devices, it can be used as an alternative message frame.

[0066] S240, each main electronic device compresses the clock synchronization signal, the feedback information that itself needs to feedback to the rescue center, the feedback information of other electronic devices, and the generation time of the feedback information in a predefined form and then transmits them to the rescue center.

[0067] Reference Figure 5 , as a specific implementation manner of the present invention, S240 includes:

[0068] S241. Each master electronic device attempts to lock its dedicated cache in the dynamic cache space. If the lock fails, it is determined that its dedicated cache has been accessed;

[0069] It should be noted that if the master electronic device communicates with the rescue center, in order to ensure that communication information is not lost, a dynamic cache space needs to be set. In this dynamic cache space, each master electronic device has its own dedicated cache. If the dedicated cache has been accessed, it means that the information in the dedicated cache has been read or the memory space has been invaded, and the lock will surely fail at this time.

[0070] S242. If the lock of the dedicated cache corresponding to the master electronic device fails, the second bit of the compressed data packet is filled with a predetermined character. If the lock is successful, the generation time of the alternative message frame is used as the second bit of the compressed data packet;

[0071] It should be noted that if the master electronic device fails to lock, it needs to change the compressed data packet it uploads. In the compressed data packet, the first one is the frame header, and the second one is the dedicated character bit. Once there is a corresponding predetermined character on the dedicated character bit of the compressed packet, it means that the dedicated cache corresponding to the message frame has been accessed or is being accessed and cannot be written. If the lock is successful, the generation time of the alternative message frame is converted into a character and placed on this dedicated character bit, indicating that the compressed data packet can be safely written into the corresponding dedicated memory.

[0072] S243. Compress the clock synchronization signal, the feedback information that itself needs to feedback to the rescue center, the feedback information of other electronic devices, and the generation time of the feedback information into the data bits of the compressed data packet;

[0073] S234. Transmit the compressed data packet to the rescue center.

[0074] Reference Figure 6 , as a specific implementation manner of the present invention, S300 includes:

[0075] S310. Receive the feedback information reported by all electronic devices and the compressed data packet uploaded by the master electronic device;

[0076] S320. Extract the feedback information of the master electronic device, the generation time of the feedback information, and the clock synchronization signal from the compressed data packet;

[0077] S330. Determine the total time delay of the clock synchronization signal from the master electronic device to the rescue center, where the total time delay includes the hardware time delay and the communication time delay;

[0078] S340. Using the generation time of the feedback information of the master electronic device as a reference, generate a basic calibration time by using the total time delay;

[0079] S350. Use the basic calibration time to perform clock synchronization on the feedback information reported by all electronic devices to obtain all the feedback information with clock synchronization.

[0080] It should be noted that there are delays in the communication transmission process. This delay is divided into two types, one is the hardware delay and the other is the communication delay. There is a certain distance from the electronic device to the rescue center, and there are also delays in the feedback information reported by all electronic devices. Since the master electronic device is the one with the least required resources and a relatively high transmission rate selected, therefore, using the time when the master electronic device generates the feedback information as a reference, the sum of this generation time and the total delay is the basic calibration time. In this way, all the feedback information is calibrated according to this basic calibration time, and the feedback information will form a time series according to the basic calibration time. This calibration process is not the calibration of the timing clock, but to eliminate the problem of inconsistent reporting times caused by delays for all feedback information.

[0081] Reference Figure 7 , as a specific implementation manner of the present invention, S350 includes:

[0082] S351. Regard the electronic devices other than the master electronic device as slave electronic devices;

[0083] S352. Use the transmission distance and transmission rate from each slave electronic device to the master electronic device to calculate the transmission time of transmitting data from each slave electronic device to the master electronic device;

[0084] S354. Obtain the generation time of the feedback information corresponding to each electronic device;

[0085] S355. For the feedback information of each slave electronic device, sum the generation time of the feedback information and the transmission time to obtain the arrival time of the feedback information at the master electronic device;

[0086] S356. Calculate the time difference between the arrival time and the basic calibration time, and use it as the processing time difference;

[0087] S357. For the feedback information of any slave electronic device, perform adaptive clock synchronization on the generation time of the feedback information according to the processing time difference of the master electronic device to obtain all the feedback information with clock synchronization;

[0088] Among them, when there are multiple main electronic devices, there are corresponding multiple synchronous clocks, and the feedback information of clock synchronization will carry the numbers of the corresponding main electronic devices.

[0089] It should be noted that for any feedback information, the generation time of this feedback information may be different. Exemplarily, for example, one feedback information is generated at 7:50, and another feedback information is generated at 7:55. The generation time of the feedback information of the main electronic device is 7:53. If the transmission times of other electronic devices reaching the main electronic device are different, it is necessary to determine the arrival time of the feedback information of each electronic device reaching the main electronic device according to the transmission time, and the main electronic device aggregates all the information to form its own feedback information and transmits it to the rescue center. The time difference between this arrival time and the basic calibration time of the main electronic device is the time difference that needs to be calibrated. The calibration time differences of each electronic device may be different, so it is necessary to complete the calibration adaptively. In addition, each feedback information will have the number of the electronic device based on which it is calibrated, so that the feedback information of the main electronic device with a large calibration error can be excluded subsequently.

[0090] Reference Figure 8 , as a specific implementation manner of the present invention, S400 includes:

[0091] S410, determining whether the clocks of the electronic devices in the monitoring center are consistent with the clocks of any main electronic device. If they are consistent, the feedback information after clock synchronization carrying the number of this main electronic device is added to the rescue data set. If they are not consistent, the feedback information is added to the screening data set;

[0092] It should be noted that if the clocks of the monitoring center and the main electronic device are not consistent, the feedback information synchronized according to this main electronic device needs to be further screened and can be added to the screening data set. If they are consistent, it means that this feedback information is available feedback information and can be used as rescue data.

[0093] S420, comparing the first synchronous clock with the second synchronous clock to screen out the first synchronous clock whose time is closest to the second synchronous clock, and adding the corresponding feedback information to the rescue data set;

[0094] Among them, the first synchronous clock is the synchronous clock of the feedback information in the screening data set, and the second synchronous clock is the clock of the electronic device in the monitoring center;

[0095] It should be noted that since the clocks of the main electronic device and the electronic device in the monitoring center are not consistent, the feedback information is inaccurate. However, in the case of natural disasters, it is very beneficial for rescue to obtain as many accurate feedback information as possible. Therefore, the feedback information with close clock times can be screened and then added to the rescue data set.

[0096] S430, select the feedback information with the latest time from the rescue data set as the valid feedback information.

[0097] Reference Figure 9 , as a specific implementation manner of the present invention, S500 includes:

[0098] S510, input the geological information in the valid feedback information into the trained geological prediction model to predict the future change parameters of the disaster occurrence area;

[0099] S520, use the environmental information, train information of the rail train and the future change parameters of the disaster occurrence area in the valid feedback information as rescue planning parameters to plan an initial rescue strategy using a planning algorithm;

[0100] S530, dynamically adjust the initial rescue strategy according to the overall traffic information and prior knowledge in the valid feedback information to obtain the final rescue strategy;

[0101] S540, send the final rescue strategy to each rescue electronic device so that the rescue personnel carrying the rescue electronic device can reach the designated location according to the rescue strategy for rescue.

[0102] It should be noted that the prior knowledge is the rescue data and rescue strategies of historical natural disasters of the same type. The geological prediction model can be trained with historical geological data, repeatedly adjust the accuracy of the geological prediction model, and then finally predict the change situation of the disaster occurrence area. Then, in combination with the environmental information and train information, an initial rescue strategy is planned, and then it is dynamically adjusted according to the traffic situation and prior knowledge. During the rescue process, each rescue personnel carries an electronic device, and the electronic device will display the rescue strategy to complete the rescue in real time.

[0103] In the second aspect, as Figure 10 shown, the present invention provides a real-time rescue system applied to rail transit trains, including:

[0104] A selection module, configured to select at least one main electronic device both in the disaster occurrence area where the rail train is located and the electronic device of the monitoring center;

[0105] A feedback module, configured to regularly send a clock synchronization command to the main electronic device so that the main electronic device generates a clock synchronization signal in response to the clock synchronization command, and compress the clock synchronization signal, its own feedback information and the generation time of the feedback information, and then upload it after obtaining a compressed data packet;

[0106] Among them, the feedback information is the real-time information for monitoring the rail train under geological disasters, and the real-time information includes: geological information, environmental information, the operation information of the rail train, and the overall traffic information of the disaster occurrence area;

[0107] A synchronization module, configured to receive the feedback information reported by all electronic devices and the compressed data packets uploaded by the master electronic device, and based on the generation time of the feedback information of the master electronic device, perform clock synchronization on all reported feedback information to obtain all the feedback information after clock synchronization;

[0108] A selection module, configured to determine whether the clocks of the electronic devices in the monitoring center and the electronic devices in the disaster occurrence area are consistent. If they are not consistent, select the latest feedback information from all the feedback information after clock synchronization as the valid feedback information;

[0109] A sending module, configured to formulate a rescue strategy using the valid feedback information and send it to each rescue electronic device, so that the rescue personnel carrying the rescue electronic device can reach the designated location according to the rescue strategy for rescue.

[0110] It should be noted that the terms "first" and "second" in the present invention are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, "a plurality" means two or more, unless otherwise specifically defined.

[0111] Although the present application has been described in conjunction with various embodiments herein, however, in the process of implementing the claimed present application, those skilled in the art can understand and realize other variations of the disclosed embodiments by viewing the accompanying drawings, the disclosed content, and the appended claims. In the claims, the word "comprising" does not exclude other components or steps, and "a" or "one" does not exclude a plurality of cases. [[ID= 16]]

[0112] The above content is a further detailed description of the present invention in combination with specific preferred embodiments, and it cannot be determined that the specific implementation of the present invention is only limited to these descriptions. For those of ordinary skill in the technical field to which the present invention belongs, without departing from the concept of the present invention, several simple deductions or substitutions can be made, and all should be regarded as belonging to the protection scope of the present invention.

Claims

1. A real-time rescue method applied to rail transit trains, characterized in that, Including: S100, select at least one main electronic device both in the disaster occurrence area where the rail train is located and in the electronic devices of the monitoring center; S200, regularly issue a clock synchronization command to the main electronic device, so that the main electronic device generates a clock synchronization signal in response to the clock synchronization command, and compresses the clock synchronization signal, its own feedback information, the feedback information of other electronic devices, and the generation time of the feedback information, and then uploads the compressed data packet; Among them, the feedback information is the real-time information for monitoring the rail train under geological disasters, and the real-time information includes: geological information, environmental information, the operation information of the rail train, and the overall traffic information of the disaster occurrence area; S300, receive the feedback information reported by all electronic devices and the compressed data packet uploaded by the main electronic device, and perform clock synchronization on all reported feedback information based on the generation time of the feedback information of the main electronic device to obtain all clock-synchronized feedback information; S400, determine whether the clocks of the electronic devices in the monitoring center and the electronic devices in the disaster occurrence area are consistent. If not, select the latest feedback information from all the clock-synchronized feedback information as the valid feedback information; S500, formulate a rescue strategy using the valid feedback information and send it to each rescue electronic device, so that the rescue personnel carrying the rescue electronic device can reach the designated location for rescue according to the rescue strategy; S200 includes: S210, the rescue center regularly issues a clock synchronization command at a predetermined period and sends the clock synchronization command to the main electronic device in the form of a message frame through the UDP protocol; S220, each main electronic device receives the message frame and extracts the generation time of the clock synchronization command from the message frame; S230, determine whether the generation time extracted by each main electronic device is later than the generation times of others. If so, generate a clock synchronization signal according to the message frame. If not, store the message frame as an alternative message frame in the dynamic cache space; S240, each main electronic device compresses the clock synchronization signal, its own feedback information to be fed back to the rescue center, the feedback information of other electronic devices, and the generation time of the feedback information in a agreed form, and then transmits it to the rescue center.

2. The real-time rescue method applied to rail transit trains according to claim 1, characterized in that, Before S100, the real-time rescue method applied to rail transit trains further includes: S000, use the monitoring center to send a communication signal to the communication electronic device of the rail train, and determine whether a response signal is received. If not, determine the generation moment of the nearest response signal fed back by the rail train; S001, locate the target area of the rail train at the generation moment, and use the running speed and the expected running track of the rail train to determine the disaster occurrence area where the rail train is located; Among them, the disaster occurrence area is the area that the rail train enters according to the expected running track at the next moment of the generation moment.

3. The real-time rescue method applied to rail transit trains according to claim 1, characterized in that, S100 includes: S110, identify all the electronic devices related to the rail train within the disaster occurrence area where the rail train is located as the first electronic devices, and identify all the electronic devices of the monitoring center as the second electronic devices; S120, construct a first communication topology network using the communication topology relationship among the first electronic devices and construct a second communication topology network using the communication topology relationship of the second electronic devices. Here, each communication node of the communication topology network represents an electronic device; S130, randomly select a communication node as the root node in both the first communication topology network and the second communication topology network, and issue a communication instruction to other communication nodes to make the communication instruction circulate in the second communication topology network and finally reach the root node; determine the target path that meets the path conditions among all the paths from the root node back to the root node, and use the electronic device corresponding to the communication node with the least required communication resources on the target path as the main electronic device; where the path condition is the least number of hops or the minimum time delay.

4. The real-time rescue method applied to rail transit trains according to claim 1, characterized in that, S240 includes: S241, each main electronic device attempts to lock its dedicated cache in the dynamic cache space. If the lock fails, it is determined that its dedicated cache has been accessed; S242, if the dedicated cache corresponding to the main electronic device fails to be locked, fill the second bit of the compressed data packet with a predetermined character. If the lock is successful, use the generation time of the alternative message frame as the second bit of the compressed data packet; S243, compress the clock synchronization signal, the feedback information that itself needs to feedback to the rescue center, the feedback information of other electronic devices, and the generation time of the feedback information into the data bits of the compressed data packet; S244, transmit the compressed data packet to the rescue center.

5. The real-time rescue method applied to rail transit trains according to claim 4, wherein, S300 includes: S310, receive the feedback information reported by all electronic devices and the compressed data packet uploaded by the main electronic device; S320, extract the feedback information of the main electronic device, the generation time of the feedback information, and the clock synchronization signal from the compressed data packet; S330, determine the total time delay of the clock synchronization signal from the main electronic device to the rescue center, and the total time delay includes the hardware time delay and the communication time delay; S340, using the generation time of the feedback information of the main electronic device as a reference, generate a basic calibration time using the total time delay; S350, perform clock synchronization on the feedback information reported by all electronic devices using the basic calibration time to obtain all the clock-synchronized feedback information.

6. The real-time rescue method applied to rail transit trains according to claim 5, wherein S350 includes: S351, regard the electronic devices other than the main electronic device as slave electronic devices; S352, calculate the transmission time of data from each slave electronic device to the main electronic device using the transmission distance and transmission rate from each slave electronic device to the main electronic device; S353, obtain the generation time of the feedback information corresponding to each electronic device; S354, for the feedback information of each slave electronic device, sum the generation time of the feedback information and the transmission time to obtain the arrival time of the feedback information at the main electronic device; S355. Obtain the time difference between the arrival time and the basic calibration time, and use it as the processing time difference. S356. For the feedback information of any slave electronic device, synchronize the time of the feedback information adaptively according to the processing time difference of the master electronic device to obtain all the feedback information after clock synchronization. Among them, when there are multiple master electronic devices, there are corresponding multiple synchronous clocks, and the feedback information after clock synchronization will carry the numbers of the corresponding master electronic devices.

7. The real-time rescue method applied to rail transit trains according to claim 1, characterized in that S400 includes: S410. Determine whether the clocks of the electronic devices in the monitoring center and any master electronic device are consistent. If they are consistent, add the feedback information after clock synchronization that carries the number of the master electronic device to the rescue data set. If they are not consistent, add the feedback information to the screening data set. S420. Compare the first synchronous clock with the second synchronous clock to select the first synchronous clock that is closest to the time of the second synchronous clock, and add the corresponding feedback information to the rescue data set. Among them, the first synchronous clock is the synchronous clock of the feedback information in the screening data set, and the second synchronous clock is the clock of the electronic device in the monitoring center. S430. Select the feedback information with the latest time from the rescue data set as the valid feedback information.

8. The real-time rescue method applied to rail transit trains according to claim 1, characterized in that, S500 includes: S510. Input the geological information in the valid feedback information into the trained geological prediction model to predict the future change parameters of the disaster occurrence area. S520. Use the environmental information, train operation information in the valid feedback information and the future change parameters of the disaster occurrence area as rescue planning parameters to plan an initial rescue strategy using a planning algorithm. S530. Dynamically adjust the initial rescue strategy according to the overall traffic information in the valid feedback information and prior knowledge to obtain the final rescue strategy. S540. Send the final rescue strategy to each rescue electronic device so that the rescue personnel carrying the rescue electronic device can reach the designated location for rescue according to the rescue strategy.

9. A real-time rescue system applied to rail transit trains, characterized in that, It includes: A selection module configured to select at least one master electronic device both in the disaster occurrence area where the train is located and in the electronic device of the monitoring center. A feedback module configured to regularly send a clock synchronization command to the master electronic device so that the master electronic device generates a clock synchronization signal in response to the clock synchronization command, and compress the clock synchronization signal, its own feedback information, and the generation time of the feedback information to obtain a compressed data packet and then upload it. Among them, the feedback information is the real-time information of the train monitored under geological disasters, and the real-time information includes: geological information, environmental information, the operation information of the train, and the overall traffic information of the disaster occurrence area. A synchronization module configured to receive all the feedback information reported by the electronic devices and the compressed data packets uploaded by the master electronic device, and synchronize all the reported feedback information with the generation time of the feedback information of the master electronic device as the reference to obtain all the feedback information after clock synchronization. A selection module, configured to determine whether the clocks of the electronic devices in the monitoring center and the electronic devices in the disaster area are consistent. If they are inconsistent, select the latest feedback information from all the feedback information after clock synchronization as the valid feedback information; A sending module, configured to formulate a rescue strategy using the valid feedback information and send it to each rescue electronic device, so that the rescue personnel carrying the rescue electronic devices can reach the designated location for rescue according to the rescue strategy; The feedback module is configured as follows: Regularly issue a clock synchronization command at a predetermined period and send the clock synchronization command to the master electronic device in the form of a message frame through the UDP protocol; Each master electronic device receives the message frame and extracts the generation time of the clock synchronization command from the message frame; Determine whether the generation time extracted by each master electronic device is later than that of others. If so, generate a clock synchronization signal according to the message frame. If not, use the message frame as an alternative message frame and store it in the dynamic cache space; Each master electronic device compresses the clock synchronization signal, the feedback information that itself needs to feedback to the rescue center, the feedback information of other electronic devices, and the generation time of the feedback information in a predefined form, and then transmits them to the rescue center.

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