CN113660141A - Method, device, equipment, medium and product for detecting abnormity of sent message - Google Patents
Method, device, equipment, medium and product for detecting abnormity of sent message Download PDFInfo
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- CN113660141A CN113660141A CN202110949131.4A CN202110949131A CN113660141A CN 113660141 A CN113660141 A CN 113660141A CN 202110949131 A CN202110949131 A CN 202110949131A CN 113660141 A CN113660141 A CN 113660141A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L43/00—Arrangements for monitoring or testing data switching networks
- H04L43/10—Active monitoring, e.g. heartbeat, ping or trace-route
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/40—Bus networks
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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
- H04L41/0654—Management of faults, events, alarms or notifications using network fault recovery
- H04L41/0659—Management of faults, events, alarms or notifications using network fault recovery by isolating or reconfiguring faulty entities
- H04L41/0661—Management of faults, events, alarms or notifications using network fault recovery by isolating or reconfiguring faulty entities by reconfiguring faulty entities
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L43/00—Arrangements for monitoring or testing data switching networks
- H04L43/02—Capturing of monitoring data
- H04L43/022—Capturing of monitoring data by sampling
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L43/00—Arrangements for monitoring or testing data switching networks
- H04L43/08—Monitoring or testing based on specific metrics, e.g. QoS, energy consumption or environmental parameters
- H04L43/0823—Errors, e.g. transmission errors
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/40—Bus networks
- H04L2012/40208—Bus networks characterized by the use of a particular bus standard
- H04L2012/40215—Controller Area Network CAN
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/02—Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]
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Abstract
The method determines that part of sent messages are abnormal by receiving fault signals sent by the bottom layer of a vehicle controller, determines that part of sent messages are normal by sending detection messages to a local area network and correctly returning the detection messages according to whether the local area network correctly returns the detection messages, and performs abnormity detection on the sent messages when the local area network does not correctly return the detection messages. Therefore, the condition of message abnormity detection can be accurately sent, and the occupation of resources for detecting and sending message abnormity in the vehicle control unit is reduced.
Description
Technical Field
The present application relates to the field of automotive technologies, and in particular, to a method, an apparatus, a device, a computer-readable storage medium, and a computer program product for detecting an anomaly in a transmitted message.
Background
The electric vehicle is an automobile driven by a motor to run by using electric energy as a power source, belongs to a new energy automobile, and is divided into a pure electric vehicle, a hybrid electric vehicle and a fuel cell electric vehicle. The vehicle control unit is a key device of a vehicle electronic control system of the pure electric vehicle, has functions similar to those of an engine management system in a traditional internal combustion engine vehicle, and can reasonably distribute power, so that the utilization efficiency of vehicle-mounted battery energy is improved.
A Vehicle Control Unit (VCU) is a core of a vehicle electronic control system, and realizes control of other electronic control units by exchanging data with a Controller Area Network (CAN). With the increasing of electronic devices on the electric vehicle, the control of the vehicle control unit on other electronic control units is more and more complex, and therefore the vehicle control unit sends more and more messages to the controller area network. Under a normal condition, the vehicle control unit always receives the sending condition of the message sent to the controller area network, so that whether the message sent to the controller area network by the vehicle control unit is disconnected or not is monitored, the message sending period of the vehicle control unit is short, and the vehicle control unit detects excessive signals, possibly resulting in scheduling overtime and affecting the work of the vehicle control unit.
Therefore, a method for detecting an abnormal transmission message is needed in the art.
Disclosure of Invention
The application provides a method for detecting message sending abnormity. The method can accurately detect the abnormal condition of the sent message, and reduces the use of the resources of the whole vehicle controller in the detection of the abnormal condition of the sent message. The application also provides a device, equipment, a computer readable storage medium and a computer program product corresponding to the method.
In a first aspect, the present application provides a method for detecting an anomaly of a sent packet, where the method includes:
judging whether a fault signal sent by the bottom layer of the whole vehicle controller is received or not, and if so, determining that a message is sent abnormally;
and when the fault signal is not received, sending a detection message to the local area network, detecting whether the detection message is received by the local area network and correctly returned, and if not, carrying out abnormal detection on a plurality of sent messages.
In some possible implementations, the performing anomaly detection on the plurality of sent messages includes:
and sampling a plurality of sent messages and carrying out abnormity detection.
In some possible implementations, the detection message includes a heartbeat value of the vehicle control unit.
In some possible implementations, the method further includes:
and when the sent message is determined to be abnormal, performing fault degradation operation.
In some possible implementations, the fault degrading operation includes a shutdown.
In some possible implementations, the failure degradation operation includes a local area network restart.
In a second aspect, the present application provides a device for detecting an anomaly of a transmitted packet, where the device includes:
the fault signal judging unit is used for judging whether a fault signal sent by the bottom layer of the whole vehicle controller is received or not, and if so, determining that the sent message is abnormal;
and the message return judging unit is used for sending the detection message to the local area network when the fault signal is not received, detecting whether the detection message is received by the local area network and returned correctly, and if not, carrying out abnormity detection on the plurality of sent messages.
In some possible implementation manners, the message backhaul determining unit is specifically configured to:
and sampling a plurality of sent messages and carrying out abnormity detection.
In some possible implementations, the detection message includes a heartbeat value of the vehicle control unit.
In some possible implementations, the apparatus further includes:
and the fault processing unit is used for performing fault degradation operation when the sent message is determined to be abnormal.
In some possible implementations, the fault degrading operation includes a shutdown.
In some possible implementations, the failure degradation operation includes a local area network restart.
In a third aspect, the present application provides an apparatus comprising a processor and a memory. The processor and the memory communicate with each other. The processor is configured to execute instructions stored in the memory to cause the device to perform the method for detecting a transmission packet exception as in the first aspect or any implementation manner of the first aspect.
In a fourth aspect, the present application provides a computer-readable storage medium, where instructions are stored in the computer-readable storage medium, and the instructions instruct a device to execute the method for detecting a transmission packet anomaly according to the first aspect or any implementation manner of the first aspect.
In a fifth aspect, the present application provides a computer program product containing instructions, which when run on a device, causes the device to perform the method for detecting a transmission packet anomaly according to the first aspect or any implementation manner of the first aspect.
The present application can further combine to provide more implementations on the basis of the implementations provided by the above aspects.
According to the technical scheme, the embodiment of the application has the following advantages:
the embodiment of the application provides a method for detecting abnormal message sending, which determines that part of sent messages are abnormal by judging whether a fault signal sent by the bottom layer of a vehicle controller is received or not, determines that part of sent messages are normal by sending detection messages to a local area network and according to whether the detection messages are correctly returned or not by the local area network, and extracts the sent messages for abnormal detection when the detection messages are not correctly returned. Therefore, the condition of message abnormity detection can be accurately sent, and the occupation of resources for detecting and sending message abnormity in the vehicle control unit is reduced.
Drawings
In order to more clearly illustrate the technical method of the embodiments of the present application, the drawings needed to be used in the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without inventive labor.
Fig. 1 is a schematic flowchart of a detection method for detecting an anomaly of a sent message according to an embodiment of the present application;
fig. 2 is a schematic flowchart of a method for detecting an anomaly of a sent message according to an embodiment of the present application;
fig. 3 is a schematic structural diagram of a detection apparatus for detecting a message sending abnormality according to an embodiment of the present application.
Detailed Description
The scheme in the embodiments provided in the present application will be described below with reference to the drawings in the present application.
The terms "first" and "second" in the embodiments of the present application are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature.
Some technical terms referred to in the embodiments of the present application will be first described.
The controller local area network is used for solving the data exchange between the whole vehicle controller and other electronic control units, and the whole vehicle controller realizes the control of the other electronic control units by sending data to the controller local area network.
In general, the vehicle control unit can always obtain the message sending condition of the vehicle control unit from the controller local area network, and monitor whether the message sent by the vehicle control unit is abnormal. However, the frequency of the message sent by the vehicle controller is usually high, and the scheduling may be overtime due to excessive signal monitoring of the vehicle controller, which affects the normal operation of the vehicle controller.
In view of this, the present application provides a method for detecting an anomaly of a sent message. The method may be performed by a vehicle control unit.
Specifically, the vehicle control unit judges whether a fault signal sent by the vehicle control unit bottom layer is received, and if so, determines that the message is abnormal; and when the fault signal is not received, sending a detection message to the local area network, detecting whether the detection message is received by the local area network and correctly returned, and if not, carrying out abnormal detection on a plurality of sent messages.
In order to facilitate understanding of the technical solution of the present application, a method for detecting an anomaly of a transmitted packet provided by the present application is described below with reference to fig. 1.
Referring to a flow chart of a method for detecting an anomaly of a sent message shown in fig. 1, the specific steps of the method are as follows.
S102: and the vehicle controller judges whether a fault signal sent by the vehicle controller bottom layer is received, and when the fault signal is received, S104 is carried out, otherwise, S106 is carried out.
And the fault signal sent by the bottom layer of the whole vehicle controller is used for representing the abnormal condition of the message of the whole vehicle controller in the sending stage. Optionally, the fault signal is a bus off signal (bus off signal), and when the vehicle controller monitors that the error frame of the controller local area network is too many, the signal is sent from the bottom layer to indicate that the controller local area network is broken down, and the vehicle controller sends a message abnormally.
And the vehicle controller determines whether the transmission message is abnormal in the transmission stage according to whether the fault signal transmitted by the bottom layer of the vehicle controller is received.
S104: and the vehicle control unit determines that the message is abnormal in transmission.
In some possible implementation manners, when the vehicle control unit determines that the message transmission is abnormal, fault processing may be performed. Specifically, the fault processing may include fault degradation operations such as torque clearing and parking, so as to avoid that the vehicle is out of control due to abnormal message transmission during continuous driving, thereby endangering driving safety.
S106: the vehicle control unit sends a detection message to the local area network, detects whether the detection message is received by the local area network and correctly returns, and enters S108 when the detection message is received by the local area network and correctly returns; otherwise, the process proceeds to S110.
The local area network may include a plurality of channels, such as a vehicle local area network and a power local area network, for controlling different electronic units. In general, the baud rates of the local area networks of different channels are different, and a local area network channel with a baud rate of 250kb is described below.
The detection message may include a heartbeat value of the vehicle controller itself. Specifically, the vehicle control unit sends the self heartbeat value to a controller local area network of a plurality of channels. Alternatively, the baud rate of the local area network may be 250 kb. And the vehicle control unit receives the heartbeat value returned by the local area network from the controller local area network, compares and verifies the heartbeat value with the heartbeat value in the vehicle control unit, and indicates that the communication is normal when the comparison and verification are consistent.
S108: and the vehicle control unit determines that the message is normally sent.
S110: and the vehicle control unit detects the abnormality of the plurality of sent messages.
When the heartbeats returned by the local area network are inconsistent or the heartbeats are lost, the verification is inconsistent, that is, a timeout fault may exist.
Through the steps, it can be determined that the message sent in the time period is abnormal when the fault signal is received, and the message sent in the time period is normal when the message is received by the local area network and correctly returned, so that the abnormal judgment range of the message sent can be accurately determined, and the abnormal detection can be performed on the part of the message when the fault signal is not received and the message sent is received by the local area network and correctly returned.
In some possible implementation manners, all of the partial messages may be subjected to the judgment of the overtime fault, and if the overtime exists in the messages, it may be determined that the problem exists in the messages sent by the vehicle controller. Optionally, the determination of the problem in the message sent by the vehicle controller may be set according to the required precision, for example, the determination condition may be set to determine that the problem in the message sent by the vehicle controller exists if all the messages are overtime.
In some possible implementations, the portion of the packet may be sampled for anomaly detection. The number of samples to be sampled can be determined according to the required precision and the total message number. For example, sampling anomaly detection may be performed on a transmission message which is not received by the fault signal transmitted by the bottom layer of the vehicle controller, is not received by the transmission message, is not received by the local area network, and is correctly returned, for example, 5 messages may be extracted, and when all of the 5 messages are overtime, it is determined that the transmission message of the vehicle controller is abnormal.
When the message is judged and determined to be sent abnormally, the whole vehicle controller reports a corresponding fault, performs degradation operations such as parking torque clearing and the like, processes the controller area network, and can continue to drive when the controller area network is recovered to be normal. In general, the controller area network is restarted, and the controller area network is considered to be recovered to be normal after the local area network is reset.
In summary, the embodiment of the present application provides a method for detecting an anomaly of a transmitted message, where the method determines that the transmitted message is anomalous by whether a fault signal transmitted by a bottom system of a vehicle controller is received, and when the fault signal is not received, transmits a detection message to a local area network according to whether the detection message is correctly returned by the local area network, and when the detection message is correctly returned, determines that the transmitted message is normal, and finally performs anomaly detection on the transmitted message that has not received the fault signal transmitted by the bottom control system and has not been normally returned by the detection message. Therefore, the condition of message abnormity detection can be accurately sent, the scheduling times of related functions in the vehicle controller are reduced, and the occupancy rate of the resources of the vehicle controller is reduced.
In another embodiment, as shown with reference to FIG. 3, the method includes the following steps.
S202: and the vehicle control unit sends the self heartbeat value to the controller area network.
In some possible implementation manners, the detection message sent by the vehicle controller to the local area network may be a heartbeat value of the vehicle, and the detection message may be sent by the vehicle controller to the controller local area network in the same manner as other messages.
S204: and judging whether the vehicle control unit receives a fault signal sent by the bottom layer. When no fault signal is received, S206 is entered, otherwise S210 is entered.
S206: and the vehicle control unit receives the heartbeat value from the local area network, checks the heartbeat value and judges whether the heartbeat value is consistent with the heartbeat value of the vehicle control unit. When not consistent, the process proceeds to S208, otherwise, the process proceeds to S212.
The vehicle control unit obtains the heartbeat value from the local area network and compares the heartbeat value with the heartbeat value of the vehicle control unit, so that whether the detection message is received by the local area network and correctly returned is determined. The heartbeat value is an inherent attribute of normal work of the whole vehicle controller, and the heartbeat value is kept unchanged when the same whole vehicle controller works normally.
S208: and the vehicle control unit acquires a message sent by the vehicle control unit from the local area network and judges whether the sent message is overtime. And when the message has time out, the step S210 is entered, otherwise, the step S212 is entered.
The method can be used for carrying out all detection on messages sent by the vehicle control unit acquired from the local area network, can also be used for carrying out sampling detection, and is specifically set according to the precision requirement. Moreover, different thresholds may be set according to the accuracy requirement, for example, it may be set that when there is one abnormal message transmission, it is considered that there is timeout, when there is all abnormal message transmissions, it is considered that there is timeout, or when there is one-half abnormal message transmission greater than the detection number, it is considered that there is timeout.
S210: and the vehicle control unit determines that the message is abnormal in transmission.
Specifically, the vehicle control unit stops and restarts the controller area network until the reset is successful.
S212: and the vehicle control unit determines that the message is normally sent.
Therefore, the method for detecting the abnormity of the sent message can be provided, the abnormity detection range of the sent message can be accurately performed through the fault signal sent by the bottom layer of the controller and the correct receiving condition of the message comprising the heartbeat value of the vehicle controller, the condition of the sent message can be accurately detected, the communication quality of the vehicle controller and a local area network is improved, the anti-interference capability is enhanced, the scheduling times of related functions in the vehicle controller are reduced, and the occupancy rate of the vehicle controller resource is reduced.
Corresponding to the above method embodiment, the present application further provides a device for detecting an abnormal transmission packet, and referring to fig. 3, the device 300 includes: a fault signal determination unit 302 and a message backhaul determination unit 304.
A fault signal judgment unit 302, configured to judge whether a fault signal sent by a vehicle controller bottom layer is received, and if yes, determine that a message sent is abnormal;
the message returning determination unit 304 is configured to send a detection message to the local area network when the failure signal is not received, detect whether the detection message is received by the local area network and returned correctly, and if not, perform anomaly detection on multiple sent messages.
In some possible implementations, the message backhaul determining unit 304 is specifically configured to:
and sampling a plurality of sent messages and carrying out abnormity detection.
In some possible implementations, the detection message includes a heartbeat value of the vehicle control unit.
In some possible implementations, the apparatus further includes:
and the fault processing unit is used for performing fault degradation operation when the sent message is determined to be abnormal.
In some possible implementations, the fault degrading operation includes a shutdown.
In some possible implementations, the failure degradation operation includes a local area network restart.
The application provides a device for realizing a detection method for message sending abnormity. The apparatus includes a processor and a memory. The processor and the memory communicate with each other. The processor is configured to execute instructions stored in the memory to cause the device to perform a method for detecting an anomaly in a transmitted message.
The application provides a computer-readable storage medium, in which instructions are stored, and when the computer-readable storage medium runs on a device, the device is enabled to execute the method for detecting the message sending abnormality.
The present application provides a computer program product comprising instructions that, when run on a device, cause the device to perform the above-described method of detecting an anomaly in a sent message.
It should be noted that the above-described embodiments of the apparatus are merely schematic, where the units described as separate parts may or may not be physically separate, and the parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment. In addition, in the drawings of the embodiments of the apparatus provided in the present application, the connection relationship between the modules indicates that there is a communication connection therebetween, and may be implemented as one or more communication buses or signal lines.
Through the above description of the embodiments, those skilled in the art will clearly understand that the present application can be implemented by software plus necessary general-purpose hardware, and certainly can also be implemented by special-purpose hardware including special-purpose integrated circuits, special-purpose CPUs, special-purpose memories, special-purpose components and the like. Generally, functions performed by computer programs can be easily implemented by corresponding hardware, and specific hardware structures for implementing the same functions may be various, such as analog circuits, digital circuits, or dedicated circuits. However, for the present application, the implementation of a software program is more preferable. Based on such understanding, the technical solutions of the present application may be substantially embodied in the form of a software product, which is stored in a readable storage medium, such as a floppy disk, a usb disk, a removable hard disk, a ROM, a RAM, a magnetic disk, or an optical disk of a computer, and includes several instructions for enabling a computer device (which may be a personal computer, an exercise device, or a network device) to execute the method according to the embodiments of the present application.
In the above embodiments, the implementation may be wholly or partially realized by software, hardware, firmware, or any combination thereof. When implemented in software, may be implemented in whole or in part in the form of a computer program product.
The computer program product includes one or more computer instructions. When loaded and executed on a computer, cause the processes or functions described in accordance with the embodiments of the application to occur, in whole or in part. The computer may be a general purpose computer, a special purpose computer, a network of computers, or other programmable device. The computer instructions may be stored in a computer readable storage medium or transmitted from one computer readable storage medium to another, for example, from one website site, computer, training device, or data center to another website site, computer, training device, or data center via wired (e.g., coaxial cable, fiber optic, Digital Subscriber Line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.). The computer-readable storage medium can be any available medium that a computer can store or a data storage device, such as a training device, a data center, etc., that incorporates one or more available media. The usable medium may be a magnetic medium (e.g., floppy Disk, hard Disk, magnetic tape), an optical medium (e.g., DVD), or a semiconductor medium (e.g., Solid State Disk (SSD)), among others.
Claims (10)
1. A detection method for abnormal transmission messages is characterized in that the method is executed by a vehicle controller, and the method comprises the following steps:
judging whether a fault signal sent by the bottom layer of the whole vehicle controller is received or not, and if so, determining that the sent message is abnormal;
and when the fault signal is not received, sending a detection message to a local area network, detecting whether the detection message is received by the local area network and correctly returned, and if not, carrying out abnormity detection on a plurality of sent messages.
2. The method of claim 1, wherein the detecting the anomaly of the plurality of detection packets comprises:
and sampling a plurality of the sent messages, and carrying out abnormity detection.
3. The method according to claim 1, wherein the detection message includes a heartbeat value of the vehicle control unit.
4. The method of claim 1, further comprising:
and when the sent message is determined to be abnormal, performing fault degradation operation.
5. The method of claim 4, wherein the fault degrading operation comprises a shutdown.
6. The method of claim 4, wherein the failure degradation operation comprises a local area network restart.
7. A device for detecting an anomaly in a transmitted message, the device comprising:
the fault signal judging unit is used for judging whether a fault signal sent by the bottom layer of the whole vehicle controller is received or not, and if so, determining that the sent message is abnormal;
and the message return judging unit is used for sending a detection message to a local area network when the fault signal is not received, detecting whether the detection message is received by the local area network and correctly returned, and if not, carrying out abnormal detection on a plurality of sent messages.
8. An apparatus, comprising a processor and a memory;
the processor is to execute instructions stored in the memory to cause the device to perform the method of any of claims 1 to 6.
9. A computer-readable storage medium comprising instructions that direct a device to perform the method of any of claims 1-6.
10. A computer program product, characterized in that it causes a computer to carry out the method according to any one of claims 1 to 6, when said computer program product is run on a computer.
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