CN112737859B - Vehicle-mounted flow audit and alarm linkage system and flow abnormality judgment method - Google Patents
Vehicle-mounted flow audit and alarm linkage system and flow abnormality judgment method Download PDFInfo
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- CN112737859B CN112737859B CN202110001854.1A CN202110001854A CN112737859B CN 112737859 B CN112737859 B CN 112737859B CN 202110001854 A CN202110001854 A CN 202110001854A CN 112737859 B CN112737859 B CN 112737859B
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- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
- H04L41/06—Management of faults, events, alarms or notifications
- H04L41/0631—Management of faults, events, alarms or notifications using root cause analysis; using analysis of correlation between notifications, alarms or events based on decision criteria, e.g. hierarchy, tree or time analysis
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
- H04L41/06—Management of faults, events, alarms or notifications
- H04L41/0677—Localisation of faults
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
- H04L41/06—Management of faults, events, alarms or notifications
- H04L41/069—Management of faults, events, alarms or notifications using logs of notifications; Post-processing of notifications
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Abstract
The invention relates to a vehicle-mounted flow audit and alarm linkage system, which comprises a vehicle-mounted Ethernet switch, a driver desk display screen, an Ethernet hub and an Ethernet repeater, wherein the driver desk display screen and the Ethernet hub are simultaneously arranged in a cab of a head-tail vehicle; the vehicle-mounted Ethernet switch is connected to the Ethernet hub of the group through the out-of-band management port, the Ethernet switch of the compartment far away from the cab of the head-tail car in the group is connected to the Ethernet hub of the group after being relayed through the Ethernet repeater deployed in the group, and the display screen of the driver desk is connected to the Ethernet hub of the same cab through the Ethernet interface, so that the display screen of the driver desk displays vehicle-mounted flow audit information. Meanwhile, the invention also provides a corresponding flow abnormality judging method for monitoring the flow abnormality of each device in the vehicle network in real time and providing flow audit information.
Description
Technical Field
The invention belongs to the technical field of vehicle-mounted networks, and particularly relates to a vehicle-mounted flow audit and alarm linkage system and a flow abnormality judgment method.
Background
Along with popularization and application of the industrial Ethernet in the field of railway vehicles, a plurality of technical improvements such as large bandwidth, high speed, intelligent transmission and the like are brought to the vehicle-mounted network of the railway vehicles, and meanwhile, because of the openness and universality of the industrial Ethernet technology, the safety problem of the industrial Ethernet in the application of the vehicle-mounted network is more and more brought to the attention of the industry, in particular to the aspect of flow audit.
However, in the current vehicle-mounted network, the flow of the vehicle-mounted equipment is not monitored, and when a flow abnormal fault occurs, a fault point cannot be accurately positioned; flow control is generally carried out through the speed limit of the switch port, but the mode is passive defense and cannot feed back the working state of the speed limit of the switch port; and port speed limiting can only limit device flow below a threshold, and is not effective for abnormal flow conditions below a flow threshold. Meanwhile, because of the function and performance difference of products of each subsystem manufacturer, the system logs of most devices cannot carry out accurate flow statistics and feedback, so that a vehicle operator cannot obtain flow audit information.
Therefore, aiming at the problems, the invention provides a vehicle-mounted network flow audit and alarm linkage system and a flow abnormality judging method so as to monitor the flow state of each network device in real time.
Disclosure of Invention
Aiming at the problem that the existing vehicle-mounted network has defects in the aspect of monitoring the equipment flow, the invention provides a vehicle-mounted flow audit and alarm linkage system and a flow abnormality judgment method, so as to realize the real-time monitoring of the flow conditions of all network equipment and the effective flow abnormality judgment.
In order to achieve the above object, the present invention provides a vehicle-mounted flow audit and alarm linkage system, including: the system comprises a vehicle-mounted Ethernet switch, a driver desk display screen, an Ethernet hub and an Ethernet repeater;
the driver desk display screen and the Ethernet hub are simultaneously arranged in the driver cabs of the head-tail vehicle, the vehicle-mounted Ethernet switch is arranged in each carriage, and at least one Ethernet repeater is arranged in each group;
the vehicle-mounted switch is provided with an out-of-band management port, and the driver desk display screen, the Ethernet hub and the Ethernet repeater are all provided with a plurality of Ethernet interfaces;
the vehicle-mounted Ethernet switch is connected to the Ethernet hub of the group through the out-of-band management port, the Ethernet switch of a compartment far away from the cab of the head-tail car in the group is connected to the Ethernet hub of the group after being relayed through the Ethernet repeater deployed in the group, and the display screen of the cab is connected to the Ethernet hub of the same cab through the Ethernet interface.
Preferably, each consist is deployed with one ethernet repeater at the intermediate car location in each consist.
Preferably, the real-time port rate statistics of the switching chip are obtained on the vehicle-mounted Ethernet switch in a software mode and are sent to the display screen of the driver's desk of the group.
Preferably, the ethernet repeater is an ethernet repeater device, and performs physical layer repeating and forwarding on the ethernet signals, so that an ethernet switch of a compartment far from the cab in the group can send the signals to a display screen of a driver's desk in the group.
Preferably, the ethernet hub is an ethernet relay and forwarding device, and the ethernet signals are relayed and forwarded in a physical layer, so that the driver's desk display screen of the group receives the ethernet physical layer signals.
Preferably, the driver desk display screen sorts and displays port flow statistical messages sent by all Ethernet switches in the group and stores the port flow statistical messages as audit logs, and performs screen flicking alarm on abnormal flow.
The invention also provides a method for judging the abnormal flow of the vehicle-mounted network equipment, which adopts the vehicle-mounted flow audit and alarm linkage system and comprises the following steps:
the driver desk display screen receives port flow statistic messages sent by all Ethernet switches in the group, and compares the real-time port flow statistic value Vr in the messages with a preset port flow threshold value Vt of each vehicle-mounted network device;
if the real-time port flow statistic value Vr=0 or Vr is more than or equal to Vt in the message and lasts for a certain time, the driver desk display screen displays flow abnormal information, and the flow abnormal information and the port flow statistic message are stored as an audit log; otherwise, only the port flow statistics are stored as audit logs.
Preferably, the method for setting the port flow threshold Vt of the vehicle-mounted network device is as follows:
according to the communication requirement of the train, calculating a theoretical value Rxt of the normal communication rate of the vehicle-mounted network equipment;
acquiring a communication rate actual value Rxr of each subsystem vehicle-mounted network device in a normal operation stage according to port rate statistics of the vehicle-mounted Ethernet switch;
and under the condition that the deviation between the theoretical value and the actual value is not more than a preset value m, the absolute value of the absolute value is equal to or less than m and is equal to Rxt, m is smaller than 1, a larger value max { Rxt, rxr } of the theoretical value and the actual value is taken as a flow reference value of the vehicle-mounted network equipment, and a port flow threshold Vt of the vehicle-mounted network equipment is set to be n×max { Rxt, rxr }, and n is larger than 1, wherein the port flow is a port sending rate and a port receiving rate.
Preferably, if the real-time port flow statistic value vr=0 u vr=vt in the message and lasts for more than a given alarm time T1, or if the real-time port flow statistic value vr=vt in the message and lasts for more than a given alarm time T2 and more than T2 > T1, the driver desk display screen displays the flow abnormality information, and the flow abnormality information and the port flow statistic message are stored as an audit log.
Compared with the prior art, the invention has the advantages and positive effects that:
the invention connects the vehicle-mounted Ethernet exchanger to the Ethernet hub of the present group through the out-of-band management port by setting the vehicle-mounted flow audit and alarm linkage system, the display screen of the driver's desk is connected to the Ethernet hub of the same driver's cab through the Ethernet interface, the Ethernet exchanger of the far carriage of the driver's cab of the present group from the head and tail vehicle is connected to the Ethernet hub of the present group after being relayed through the Ethernet relay deployed by the present group, so as to ensure that the Ethernet exchanger of the far carriage of the present group from the driver's cab can send signals to the display screen of the driver's desk of the present group, the out-of-band management port of the Ethernet exchanger is connected with the display screen of the driver's desk, the real-time flow audit condition of each network device of the vehicle is not occupied, the display screen of the driver's desk displays the vehicle-mounted flow audit information, and fault alarm and fault positioning means can be provided for drivers and passengers.
Meanwhile, according to the set vehicle-mounted flow audit and alarm linkage system, the invention also provides a corresponding flow abnormality judging method, and according to the theoretical value of the normal communication rate of the vehicle-mounted network equipment and the actual value of the communication rate of the vehicle-mounted network equipment counted by the port rate of the vehicle-mounted Ethernet switch, the port flow threshold of the vehicle-mounted network equipment is preset; and comparing the real-time port flow statistic value in the port flow statistic message sent by the Ethernet switch with the preset port flow threshold value of each vehicle-mounted network device, further judging whether the flow of each network device is abnormal or not, and displaying flow abnormality information through a driver desk display screen so as to remind drivers and passengers of paying attention to and handling the abnormality. The flow abnormality judging method can detect the abnormal condition of the device port flow below the flow threshold, solve the difficulty that the device cannot discriminate the abnormal flow faults under the speed limit of the switch port, and provide the flow audit information of each device in the vehicle network for the vehicle operator.
Drawings
FIG. 1 is a deployment diagram of a vehicle-mounted flow audit and alert linkage system apparatus of the present invention;
FIG. 2 is a flowchart showing a flow abnormality determination method of an in-vehicle network device;
FIG. 3 is a flow chart for determining a port flow threshold for an in-vehicle network device;
FIG. 4 is a flow chart of the driver's desk display audit and alarm.
Detailed Description
The following describes the embodiments of the present invention further with reference to the drawings.
As shown in fig. 1, an embodiment of the present invention provides a vehicle-mounted traffic audit and alarm linkage system, including: the system comprises a vehicle-mounted Ethernet switch, a driver desk display screen, an Ethernet hub and an Ethernet repeater; the display screen of the driver desk and the Ethernet hub are simultaneously arranged in the cab of the head-tail vehicle, the vehicle-mounted Ethernet switch is arranged in each carriage, at least one Ethernet repeater is arranged in each group, and in the embodiment, the Ethernet repeater can be arranged in the middle carriage position of each group. The vehicle-mounted switch is provided with an out-of-band management port, the display screen of the driver's desk, the Ethernet hub and the Ethernet repeater are all provided with a plurality of Ethernet interfaces, the vehicle-mounted Ethernet switch is connected to the Ethernet hub of the group through the out-of-band management port, the Ethernet switch of a compartment far away from the driver's cab of the head-tail car in the group is connected to the Ethernet hub of the group after being relayed through the Ethernet repeater deployed in the group, and the display screen of the driver's desk is connected to the Ethernet hub of the same driver's cab through the Ethernet interfaces.
Acquiring real-time port rate statistics of the switching chip on the vehicle-mounted Ethernet switch in a software mode, and sending the real-time port rate statistics to a driver desk display screen of the group after the real-time port rate statistics are arranged according to the corresponding relation between the ports and each vehicle-mounted network device; the Ethernet repeater is Ethernet repeater equipment, and through physical layer repeating and forwarding of Ethernet signals, the Ethernet exchanger of the compartment far away from the cab in the marshalling can send the signals to the display screen of the driver's desk in the marshalling; the Ethernet hub is Ethernet relay and forwarding equipment, and the driver station display screen can receive stable and reliable Ethernet physical layer signals by carrying out physical layer relay and forwarding on the Ethernet signals; the driver desk display screen sorts and displays the port flow statistical messages sent by all Ethernet switches in the group and stores the port flow statistical messages as audit logs, and the abnormal flow is subjected to screen flicking alarm so as to remind drivers and passengers of paying attention to and handling the abnormal situation.
The invention connects the vehicle-mounted Ethernet switch to the Ethernet hub of the group through the out-of-band management port by arranging the vehicle-mounted traffic audit and alarm linkage system, and the display screen of the driver desk is connected to the Ethernet hub of the same driver cab through the Ethernet interface, so that the out-of-band management port of the Ethernet switch is connected with the display screen of the driver desk, the traffic bandwidth is not occupied, the real-time traffic audit condition of each network device of the vehicle can be objectively reflected, the display screen of the driver desk displays the vehicle-mounted traffic audit information, and fault alarm and fault positioning means can be provided for drivers and passengers. Meanwhile, the Ethernet switch of the carriage far away from the cab of the head-tail car in the group is connected to the Ethernet hub of the group after being relayed by the Ethernet relay deployed in the group, so that the Ethernet switch of the carriage far away from the cab of the group can send signals to the display screen of the driver's desk of the group.
According to the vehicle-mounted flow audit and alarm linkage system, the invention also provides a corresponding vehicle-mounted network equipment flow abnormality judging method, as shown in fig. 2-4, specifically comprising the following steps:
(1) Determining a preset port flow threshold of the vehicle-mounted network equipment, as shown in fig. 3:
according to the communication requirement of the train, calculating a theoretical value Rxt of the normal communication rate of the vehicle-mounted network equipment;
acquiring a communication rate actual value Rxr of each subsystem vehicle-mounted network device in a normal operation stage according to port rate statistics of the vehicle-mounted Ethernet switch;
when the deviation between the theoretical value and the actual value is not more than a preset value m, the absolute value of (Rxt-Rxr) is less than or equal to m, the absolute value of m is Rxt, and m is less than 1, and in the embodiment, the value of m is m=20%;
the larger value max { Rxt, rxr } of the theoretical value and the actual value is taken as the flow reference value of the vehicle-mounted network device, and the port flow threshold Vt of the vehicle-mounted network device is set to be n×max { Rxt, rxr }, n is greater than 1, and in this embodiment, n takes the value of n=130%.
The communication rate is counted according to the port sending rate and the port receiving rate, the port flow is the port sending rate and the port receiving rate, and the port sending rate threshold and the port receiving rate threshold can be determined according to the method.
(2) The driver desk display screen receives port flow statistic messages sent by all Ethernet switches in the group, and compares the real-time port flow statistic value Vr in the messages with a preset port flow threshold value Vt of each vehicle-mounted network device; if the real-time port flow statistic value Vr=0 or Vr is larger than or equal to Vt in the message and lasts for a certain time, the driver desk display screen displays the flow abnormality information, and the flow abnormality information and the port flow statistic message are stored as an audit log. As shown in fig. 4, the present embodiment is specifically configured to: if the real-time port flow statistic value Vr in the message is more than Vt and continues for more than the given alarm time T1, or the real-time flow statistic value Vr=0U Vr=Vt and continues for more than the given alarm time T2 and T2 is more than T1, the driver desk display screen displays the flow abnormality information, and the flow abnormality information and the port flow statistic message are stored as an audit log; otherwise, only the port flow statistics are stored as audit logs.
In summary, the invention connects the vehicle-mounted Ethernet switch to the Ethernet hub of the group through the out-of-band management port by arranging the vehicle-mounted traffic audit and alarm linkage system, the driver desk display screen is connected to the Ethernet hub of the same driver cab through the Ethernet interface, the Ethernet switch of the carriage far away from the driver cab of the head-tail car in the group is relayed through the Ethernet relay arranged in the group and then connected to the Ethernet hub of the group, so as to ensure that the Ethernet switch of the carriage far away from the driver cab of the group can send signals to the display screen of the driver desk of the group, the out-of-band management port of the Ethernet switch is connected with the display screen of the driver desk, the service bandwidth is not occupied, the real-time traffic audit condition of each network device of the vehicle can be objectively reflected, the display screen of the driver desk displays the vehicle-mounted traffic audit information, and fault alarm and fault positioning means can be provided for drivers and passengers. Meanwhile, according to the set vehicle-mounted flow audit and alarm linkage system, a corresponding flow abnormality judging method is also provided, and according to the theoretical value of the normal communication rate of the vehicle-mounted network equipment and the actual value of the communication rate of the vehicle-mounted network equipment counted by the port rate of the vehicle-mounted Ethernet switch, the port flow threshold of the vehicle-mounted network equipment is preset; and comparing the real-time port flow statistic value in the port flow statistic message sent by the Ethernet switch with the preset port flow threshold value of each vehicle-mounted network device, further judging whether the flow of each network device is abnormal or not, and displaying flow abnormality information through a driver desk display screen so as to remind drivers and passengers of paying attention to and handling the abnormality. The flow abnormality judging method can detect the abnormal condition of the device port flow below the flow threshold, solve the difficulty that the device cannot discriminate the abnormal flow faults under the speed limit of the switch port, and provide the flow audit information of each device in the vehicle network for the vehicle operator.
The present invention is not limited to the above-mentioned embodiments, and any equivalent embodiments which can be changed or modified by the technical content disclosed above can be applied to other fields, but any simple modification, equivalent changes and modification made to the above-mentioned embodiments according to the technical substance of the present invention without departing from the technical content of the present invention still belong to the protection scope of the technical solution of the present invention.
Claims (8)
1. A vehicle-mounted flow audit and alert linkage system, comprising: the system comprises a vehicle-mounted Ethernet switch, a driver desk display screen, an Ethernet hub and an Ethernet repeater;
the driver desk display screen and the Ethernet hub are simultaneously arranged in the driver cabs of the head-tail vehicle, the vehicle-mounted Ethernet switch is arranged in each carriage, and at least one Ethernet repeater is arranged in each group;
the vehicle-mounted switch is provided with an out-of-band management port, and the driver desk display screen, the Ethernet hub and the Ethernet repeater are all provided with a plurality of Ethernet interfaces;
the vehicle-mounted Ethernet switch is connected to the Ethernet hub of the group through an out-of-band management port, the Ethernet switch of the compartment far away from the cab of the head-tail car in the group is connected to the Ethernet hub of the group after being relayed through the Ethernet relay deployed in the group, the display screen of the cab is connected to the Ethernet hub of the same cab through an Ethernet interface, the Ethernet relay relays and forwards Ethernet signals in a physical layer manner, so that the Ethernet switch of the compartment far away from the cab can send the signals to the display screen of the cab of the group, and the Ethernet hub can receive stable and reliable Ethernet physical layer signals through the physical layer relay and forwarding of the Ethernet signals, and reflect the real-time flow auditing condition of each network device of the vehicle;
acquiring real-time port rate statistics of an exchange chip on the vehicle-mounted Ethernet switch in a software mode, and sending the real-time port rate statistics to a driver desk display screen of the group after sorting according to the corresponding relation between ports and vehicle-mounted network equipment, wherein the driver desk display screen compares a real-time port flow statistic value Vr in a message with a preset port flow threshold value Vt of the vehicle-mounted network equipment; if the real-time port flow statistic value Vr=0 or Vr is more than or equal to Vt in the message and lasts for a certain time, the driver desk display screen displays flow abnormal information, and the flow abnormal information and the port flow statistic message are stored as an audit log; otherwise, only storing the port flow statistics as an audit log;
the setting of the port flow threshold Vt of the vehicle-mounted network device includes:
according to the communication requirement of the train, calculating a theoretical value Rxt of the normal communication rate of the vehicle-mounted network equipment;
acquiring a communication rate actual value Rxr of each subsystem vehicle-mounted network device in a normal operation stage according to port rate statistics of the vehicle-mounted Ethernet switch;
and under the condition that the deviation between the theoretical value and the actual value is not more than a preset value m, the absolute value of the absolute value is equal to or less than m and is equal to Rxt, m is smaller than 1, a larger value max { Rxt, rxr } of the theoretical value and the actual value is taken as a flow reference value of the vehicle-mounted network equipment, and a port flow threshold Vt of the vehicle-mounted network equipment is set to be n×max { Rxt, rxr }, and n is larger than 1, wherein the port flow is a port sending rate and a port receiving rate.
2. The vehicle traffic audit and alert linkage system according to claim 1 wherein each consist is deployed with an ethernet repeater at an intermediate car location in each consist.
3. The vehicle-mounted traffic audit and alarm linkage system according to claim 1 wherein the ethernet repeater is an ethernet repeater device that relays and forwards ethernet signals in a physical layer to enable an ethernet switch of a car of the consist that is farther from the cab to send signals to a display of a driver's desk of the consist.
4. The vehicle-mounted flow audit and alarm linkage system according to claim 1 wherein the ethernet hub is an ethernet relay and forward device, and the ethernet signals are relayed and forwarded in a physical layer, so that the driver's desk display screen of the group receives the ethernet physical layer signals.
5. The vehicle-mounted flow audit and alarm linkage system according to claim 1, wherein the driver desk display screen sorts and displays port flow statistics messages sent by all ethernet switches in the group and stores the port flow statistics messages as audit logs, and performs screen flicking alarm on abnormal flow information.
6. A method for judging traffic abnormality of a vehicle-mounted network device, characterized by adopting the vehicle-mounted traffic audit and alarm linkage system according to any one of claims 1 to 5, comprising:
the driver desk display screen receives port flow statistic messages sent by all Ethernet switches in the group, and compares the real-time port flow statistic value Vr in the messages with a preset port flow threshold value Vt of each vehicle-mounted network device;
if the real-time port flow statistic value Vr=0 or Vr is more than or equal to Vt in the message and lasts for a certain time, the driver desk display screen displays flow abnormal information, and the flow abnormal information and the port flow statistic message are stored as an audit log; otherwise, only the port flow statistics are stored as audit logs.
7. The method for determining traffic abnormality of an on-vehicle network device according to claim 6, wherein the method for setting the port traffic threshold Vt of the on-vehicle network device is as follows:
according to the communication requirement of the train, calculating a theoretical value Rxt of the normal communication rate of the vehicle-mounted network equipment;
acquiring a communication rate actual value Rxr of each subsystem vehicle-mounted network device in a normal operation stage according to port rate statistics of the vehicle-mounted Ethernet switch;
and under the condition that the deviation between the theoretical value and the actual value is not more than a preset value m, the absolute value of the absolute value is equal to or less than m and is equal to Rxt, m is smaller than 1, a larger value max { Rxt, rxr } of the theoretical value and the actual value is taken as a flow reference value of the vehicle-mounted network equipment, and a port flow threshold Vt of the vehicle-mounted network equipment is set to be n×max { Rxt, rxr }, and n is larger than 1, wherein the port flow is a port sending rate and a port receiving rate.
8. The method according to claim 6 or 7, wherein if the real-time port traffic statistic Vr > Vt in the message lasts for more than a given alarm time T1, or the real-time traffic statistic vr=0 u vr=vt in the message lasts for more than a given alarm time T2 and T2 > T1, the driver's desk display screen displays traffic abnormality information, and stores the traffic abnormality information and the port traffic statistic message as an audit log.
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