CN114125923B - Data transmission method, device, electronic equipment and storage medium - Google Patents
Data transmission method, device, electronic equipment and storage medium Download PDFInfo
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 107
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- 238000004891 communication Methods 0.000 claims abstract description 52
- 230000015654 memory Effects 0.000 claims description 12
- 230000001934 delay Effects 0.000 claims description 9
- 238000004171 remote diagnosis Methods 0.000 abstract description 48
- 238000003745 diagnosis Methods 0.000 description 31
- 238000010295 mobile communication Methods 0.000 description 7
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W24/00—Supervisory, monitoring or testing arrangements
- H04W24/08—Testing, supervising or monitoring using real traffic
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- H—ELECTRICITY
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- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L43/00—Arrangements for monitoring or testing data switching networks
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/12—Protocols specially adapted for proprietary or special-purpose networking environments, e.g. medical networks, sensor networks, networks in vehicles or remote metering networks
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
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- H04W4/40—Services specially adapted for particular environments, situations or purposes for vehicles, e.g. vehicle-to-pedestrians [V2P]
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Abstract
The application discloses a data transmission method, a data transmission device, electronic equipment and a storage medium. The method comprises the following steps: the first electronic device establishes communication connection with the second electronic device through an ith network interface in the N network interfaces; n is a positive integer, i is a positive integer not greater than N; the first electronic device tests a network delay for communication with the second electronic device through the ith network interface; when the network delay of the ith network interface meets a first preset condition, the first electronic equipment performs data transmission with the second electronic equipment through the ith network interface; when the network delay of the ith network interface does not meet the first preset condition, the first electronic device performs data transmission with the second electronic device through the network interface, of the N network interfaces, of which the network delay meets the second preset condition. The method can effectively reduce network time delay in the vehicle remote diagnosis process.
Description
Technical Field
The present invention relates to the field of communications technologies, and in particular, to a data transmission method, a data transmission device, an electronic device, and a storage medium.
Background
In recent years, with the rapid development of the automobile industry, the degree of automobile electronization is increasing, and the electronic control system of the automobile is also gradually complicated while the performance and the comfort of the automobile are improved, so that higher requirements are put on the automobile diagnosis technology, and the remote diagnosis function is gradually started to be applied to the automobile.
In the process of remote diagnosis of automobiles, the interaction between the automobile and the diagnostic apparatus has very high requirements on network delay. In the prior art, when multiple networks are available, the priority ordering based on the network interfaces is used sequentially, wherein the highest priority is the ethernet, the WLAN and the mobile communication network (4G/5G) finally, however, in some cases, for example, when the ethernet network is blocked or the WLAN is a mobile phone hotspot or the like outdoors, if the ethernet or the WLAN is still adopted, the problem of overlarge network delay exists, so that the remote diagnosis process is affected.
Disclosure of Invention
The embodiment of the application provides a data transmission method, a data transmission device and a data transmission system, which can screen out network interfaces with network delay meeting requirements before remote diagnosis, so that the network delay in the vehicle remote diagnosis process can be effectively reduced.
In a first aspect, embodiments of the present application provide a method for transmitting data in remote diagnosis, the method may include:
the first electronic device establishes communication connection with the second electronic device through an ith network interface in the N network interfaces; n is a positive integer, i is a positive integer not greater than N; the first electronic device tests a network delay for communication with the second electronic device through the ith network interface; when the network delay of the ith network interface meets a first preset condition, the first electronic equipment performs data transmission with the second electronic equipment through the ith network interface; when the network delay of the ith network interface does not meet the first preset condition, the first electronic device performs data transmission with the second electronic device through the network interface, of the N network interfaces, of which the network delay meets the second preset condition.
With reference to the first aspect, in some embodiments, when the network delay of the ith network interface meets a first preset condition, the data transmission between the first electronic device and the second electronic device through the ith network interface may be implemented in the following manner. And when the network time delay of the first electronic device, which is communicated with the second electronic device through the ith network interface, is smaller than a first time delay threshold value, the first electronic device performs data transmission with the second electronic device through the ith network interface.
With reference to the first aspect, in other embodiments, the testing, by the first electronic device, a network latency of communication with the second electronic device through the ith network interface further includes:
the first electronic device tests a network delay of at least one communication with the second electronic device through the ith network interface;
at least one test includes a jth test, j being a positive integer, the jth test including:
testing the network delay communicated with the second electronic equipment through the ith network interface when the network delay obtained by the j-1 test is larger than the first delay threshold and smaller than the second delay threshold;
and testing the network delay communicated with the second electronic equipment through the (i+1) th network interface when the network delay obtained by the j-1 th test is larger than the second delay threshold.
In one possible implementation, when the network delay at the ith network interface meets a first preset condition, the first electronic device performs data transmission with the second electronic device through the ith network interface, including:
and when the ith network interface is tested at least once, if the network delay obtained by the jth test is smaller than a first delay threshold value, the first electronic equipment performs data transmission with the second electronic equipment through the ith network interface.
With reference to the first aspect, in some embodiments, before the first electronic device performs data transmission with the second electronic device through a network interface whose network delay satisfies the second preset condition among the N network interfaces when the network delay of the ith network interface does not satisfy the first preset condition, the method further includes:
and when the ith network interface is tested at least once, if the network delay obtained in the j-1 th test is larger than a second delay threshold value, judging that the ith network interface does not meet the first preset condition.
In one possible implementation, after the first electronic device tests at least one network delay for communication with the second electronic device through the ith network interface, the method includes:
the first electronic equipment sequentially obtains and calculates target time delay of an ith network interface, wherein the target time delay is an average value of network time delays obtained by at least one test;
the first electronic device communicates with the second electronic device through a network interface, of which the network delay meets a second preset condition, in the N network interfaces; performing data transmission, including:
and the first electronic equipment performs data transmission with the second electronic equipment through a network interface with the minimum target time delay in the N network interfaces.
According to the method, when the network time delay of the network interface is smaller, the network interface with the minimum target time delay is adopted for remote diagnosis, and the efficiency of remote diagnosis is improved.
With reference to the first aspect, in other embodiments, when the network delay of the ith network interface meets a first preset condition, the first electronic device performs data transmission with the second electronic device through the ith network interface, and the method further includes:
and when the target time delay of the ith network interface is smaller than the third time delay threshold value, carrying out data transmission with the second electronic equipment through the ith network interface.
In a second aspect, an embodiment of the present application provides a data transmission apparatus, where the apparatus is applied to a first electronic device and includes:
the communication establishing module is used for establishing communication connection with the second electronic equipment through an ith network interface in the N network interfaces; n is a positive integer, i is a positive integer not greater than N;
the network test module is used for testing the network time delay of the communication with the second electronic equipment through the ith network interface;
the data transmission module is used for transmitting data between the first electronic device and the second electronic device through the ith network interface when the network delay of the ith network interface meets a first preset condition; and when the network delay of the ith network interface does not meet the first preset condition, carrying out data transmission with the second electronic equipment through the network interface of which the network delay meets the second preset condition in the N network interfaces.
In a third aspect, an embodiment of the present application provides an electronic device, including: one or more processors, memory; the memory is coupled to the one or more processors for storing data and instructions, the computer program code comprising computer instructions for invoking the data and instructions stored in the memory to cause the electronic device to perform the method as described in the first aspect and any possible implementation of the first aspect.
In a fourth aspect, embodiments of the present application provide a computer-readable storage medium, which is applied to an electronic device, including: computer instructions; the computer instructions, when executed on an electronic device, cause the electronic device to perform the method as described in the first aspect and any possible implementation of the first aspect.
According to the data transmission method provided by the embodiment of the application, whether the network delay of the ith network interface meets the first preset condition is judged by testing the network delay of the ith network interface, the network interfaces are adopted to conduct data transmission when the first preset number is met, if the first preset number is not met, all the network interfaces are tested, and the network interfaces meeting the second preset condition are selected to conduct data transmission, so that the first electronic equipment can select the network interfaces with the network delay meeting the requirement to conduct remote diagnosis through the method, the network delay in the vehicle remote diagnosis process can be effectively reduced, and the success of remote diagnosis is guaranteed.
Drawings
FIG. 1 is a schematic diagram of a vehicle remote diagnostic system provided in an embodiment of the present application;
fig. 2 is a schematic hardware structure of an electronic device according to an embodiment of the present application;
fig. 3 is a schematic flow chart of an embodiment one of a data transmission method in remote diagnosis according to an embodiment of the present application;
fig. 4 is a schematic flow chart of a second embodiment of a data transmission method in remote diagnosis according to the embodiment of the present application;
fig. 5 is a schematic flow chart of a third embodiment of a data transmission method in remote diagnosis according to the embodiment of the present application;
fig. 6 is a flowchart of a fourth embodiment of a data transmission method in remote diagnosis according to the embodiment of the present application;
fig. 7 is a schematic diagram of a data transmission device according to an embodiment of the present application.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.
Fig. 1 is a schematic diagram of a system for remote diagnosis of a vehicle according to an embodiment of the present application. The system consists of a vehicle-mounted terminal and remote diagnosis service platform software, and can realize the transmission of vehicle fault information and diagnosis information.
As shown in fig. 1, the vehicle remote diagnosis system includes: the vehicle-mounted terminal 10, the diagnosis terminal 20, the diagnosis server 30, the vehicle 40, and the diagnosis device 50.
The vehicle 40 is a fault vehicle, and is a remote diagnosis object, and communicates with the vehicle-mounted terminal 10 through a K-Line or CAN bus, and data such as a geographic position, a vehicle type, and vehicle diagnosis information are transmitted from the vehicle-mounted terminal 10 to the diagnosis server 30.
The in-vehicle terminal 10 may be directly connected to an in-vehicle automatic diagnostic system (on board diagnostics, OBD) of the vehicle 40, communicating with various electronic control modules (electronic control unit, ECU) in the vehicle 40 via a K-Line or serial communication (controller area network, CAN) bus, belonging to a local connection; meanwhile, the in-vehicle terminal 10 may also establish a connection with the diagnosis server 30 through a network interface, and transmit at least one of the geographical location of the vehicle 40, the type of the vehicle, the diagnosis information of the vehicle, and the like to the diagnosis server 30, thereby realizing remote diagnosis. The vehicle diagnostic information may include data such as vehicle body system information corresponding to the fault information. The vehicle-mounted terminal 10 may include a plurality of network interfaces, and the vehicle-mounted terminal 10 may select a network interface with a minimum network delay or a network delay less than a threshold value to perform data transmission with the server. The network interface may include, but is not limited to, ethernet, WLAN, mobile communication network (4G/5G).
In the embodiment of the present application, the vehicle diagnostic information may include data such as fault information and vehicle body system information corresponding to the fault information. The body system information corresponding to the fault information may include, but is not limited to, various vehicle diagnostic related parameters such as speed, engine displacement, and/or transmission parameters of the vehicle currently operating.
The diagnostic server 30 may receive a diagnostic request from the vehicle terminal 10, which may include data such as the geographic location of the vehicle 40, the type of vehicle, fault information, and vehicle body system information corresponding to the fault information, for example, parameters related to vehicle diagnostics such as the speed at which the vehicle is currently operating, engine displacement, and/or transmission parameters. And may transmit parameter information contained in the diagnosis request to the diagnosis terminal 20. The diagnosis server 30 may transmit the diagnosis result, the maintenance schedule, and the like for the vehicle 40 from the diagnosis device 50 to the in-vehicle terminal 10, and the in-vehicle terminal 10 may transmit the data to the vehicle 40 through the OBD diagnosis interface.
The function and construction of the diagnosis terminal 20 are similar to those of the vehicle-mounted terminal 10, the diagnosis terminal 20 CAN be directly connected to a connection interface of the diagnosis device 50, and communicate with the diagnosis device 50 through a K-Line or CAN bus, belonging to a local connection; and may also communicate with the diagnostic server 30 via a network interface. A diagnostic request transmitted by the diagnostic server 30 may be received and may be transmitted to the diagnostic device 50. In addition, the diagnostic terminal 20 may receive the diagnosis result, the maintenance schedule, and the like for the vehicle 40 from the diagnostic device 50 and transmit the same to the diagnostic server 30. The diagnostic terminal 20 may include a plurality of network interfaces, and the diagnostic terminal 20 may select a network interface with a minimum network delay or a network delay less than a threshold value to perform data transmission with the server. The network interface may include, but is not limited to, ethernet, WLAN, mobile communication network (4G/5G).
Diagnostic device 50 may support local diagnostics as well as remote diagnostics. In the present embodiment, remote diagnostics. Is connected to the diagnosis terminal 20 through a K-Line or CAN bus, receives data of the geographical position, the vehicle type, and the vehicle diagnosis information of the vehicle 40, etc., transmitted from the diagnosis terminal 20, and CAN transmit the diagnosis result of the vehicle 40 and the maintenance scheme to the diagnosis server 30 through the diagnosis terminal 20. The diagnostic device 50 can diagnose various vehicle models, and support functions of intelligent diagnosis, remote diagnosis, on-line programming, and the like.
As exemplarily shown in fig. 1, the time delay of the vehicle remote diagnosis mainly includes four parts: the first part is a local connection between the in-vehicle terminal 10 and the vehicle 40; the second part is the local connection between the diagnostic terminal 20 and the diagnostic device 50; the third part is a wired or wireless communication connection between the in-vehicle terminal 10 and the diagnosis server 30; the fourth part is a wired or wireless communication connection between the diagnostic terminal 20 and the diagnostic server 30.
Wherein the network of the local connection of the first part and the second part is stable and the network delay is small; and there is a greater uncertainty in the network latency of the wired or wireless communication connection of the third part with the fourth part.
Accordingly, the method for data transmission in remote diagnosis provided in the embodiments of the present application aims to reduce the wired or wireless communication connection of the third portion and the fourth portion.
Fig. 2 is a schematic hardware structure of an electronic device 100 according to an embodiment of the present application. The vehicle-mounted terminal 10 and the diagnostic terminal 20 may be the above-described ones.
The electronic device 100 may be a portable electronic device such as a cell phone, tablet computer, smart watch. May be, but is not limited to being, piggybacked iOS, android, linux or other operating systems. It should also be appreciated that in some embodiments, the electronic device described above may also be a desktop computer.
The electronic device 100 includes at least one processor (central processing unit, CPU) 110, a memory 120, a wireless communication module 130, a mobile communication module 140, and the like.
Optionally, the electronic device 100 may also include a display 150, a global positioning system (Global Positioning System, GPS) sensor 160, an obd 170.
It should be understood that the illustrated structure of the embodiment of the present invention does not constitute a specific limitation on the electronic device 100. In other embodiments of the present application, electronic device 100 may include more or fewer components than shown, or certain components may be combined, or certain components may be split, or different arrangements of components. The illustrated components may be implemented in hardware, software, or a combination of software and hardware.
The processor 110 may be a central processing unit (Central Processing Unit, CPU), and the processor 110 may also be other general purpose processors, digital signal processors (Digital Signal Processor, DSP), application specific integrated circuits (Application Specific Integrated Circuit, ASIC), field-programmable gate arrays (Field-Programmable Gate Array, FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, or the like. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.
The memory 120 may be an internal storage unit of the electronic device 100, such as a hard disk or memory, in some embodiments. The memory 120 may also be an external storage device of the electronic device 100 in other embodiments, such as a plug-in hard disk, a Smart Media Card (SMC), a Secure Digital (SD) Card, a Flash Card (Flash Card), etc. Further, the memory 120 may also include both internal storage units and external storage devices. The memory 120 is used to store an operating system, application programs, boot loader (BootLoader), data, and other programs, etc., such as program code of a computer program, etc. The memory 120 may also be used to temporarily store data that has been output or is to be output.
The wireless communication module 130 may provide solutions for wireless communications including wireless local area networks (Wireless Local Area Networks, WLAN) (e.g., wireless fidelity (Wireless Fidelity, wi-Fi) networks), bluetooth (BT), global navigation satellite systems (Global Navigation Satellite System, GNSS), frequency modulation (Frequency Modulation, FM), etc., as applied to the electronic device 100.
In this embodiment of the present application, the wireless communication module 130 may be a WLAN as a network interface, and may be mounted on the electronic device 100 to transmit data such as the geographic location of the vehicle 40, the vehicle type, and the vehicle diagnostic information, and data such as the diagnostic result and the maintenance scheme.
The mobile communication module 140 may provide a solution for wireless communication including 2G/3G/4G/5G, etc., applied on the electronic device 100. The mobile communication module 140 is a network interface that can be mounted on the electronic device 100 to transmit data such as the geographic location of the vehicle 40, the type of vehicle, and vehicle diagnostic information, and data such as diagnostic results and maintenance solutions.
In one implementation, the electronic device further includes a display screen 150 for displaying images, video, or an operator interface, etc.
In the embodiment of the present application, the GPS sensor 160 is mainly used to collect the geographic location information of the vehicle 40, so as to facilitate the remote diagnosis by the diagnosis device.
In some embodiments, the electronic device 100 is the vehicle-mounted terminal 10, and further includes an OBD 170 for establishing a communication connection between the vehicle-mounted terminal 10 and the vehicle 40, where the vehicle-mounted terminal 10 and the vehicle 40 may be connected based on the OBD, and then data such as a geographic location of the vehicle 40, a vehicle type, and vehicle diagnostic information, and data such as a diagnostic result and a maintenance scheme are transmitted through a K-Line or CAN bus. Likewise, the connection between the diagnostic terminal 20 and the diagnostic device 50 may be established by the OBD 180, and the data may be transmitted through the K-Line or CAN bus.
The following describes a data transmission method according to an embodiment of the present application.
In the existing vehicle remote diagnosis process, the priority of the wired or wireless communication connection is the highest, namely the Ethernet, the WLAN and the mobile communication network (4G/5G) are the second highest, and in some cases, large network delay is easy to cause. For example, a network congestion situation of the ethernet may cause a significant network delay; when WLAN is a connected mobile hotspot, a larger network delay may also be caused.
In order to solve the problems in the prior art described above, the embodiments of the present application propose to provide a method for determining a vehicle speed before each remote diagnosis of a vehicle is started,
The first electronic device can sequentially test the network delay of each network interface, and select the network interface with the smallest network delay or smaller network delay to perform data transmission in vehicle remote diagnosis.
The "network delay" in the present application refers to a network delay between the vehicle-mounted terminal 10 and the diagnostic terminal 20, and the first electronic device described below may be the vehicle-mounted terminal 10, and the second electronic device may be the diagnostic terminal 20; or the first electronic device may be the diagnostic terminal 20 and the second electronic device may be the in-vehicle terminal 10. The test method may be that the vehicle-mounted terminal 10 sends a test command to the diagnostic server 30, the diagnostic server 30 forwards the test command to the diagnostic terminal 20, the diagnostic terminal 20 responds, the diagnostic server 30 forwards the response to the vehicle-mounted terminal 10, and the time difference between sending the test command and receiving the response is recorded after the vehicle-mounted terminal 10 receives the response, namely, the network delay.
The data transmission method provided by the embodiment of the application is mainly used for reducing network time delay in the vehicle remote diagnosis process. The method may be implemented by the system shown in fig. 1 described above.
The following description is made by way of four examples.
Example 1
Specifically, as exemplarily shown in fig. 3, a flow chart of a data transmission method may include, but is not limited to, some or all of the following steps:
S301: the first electronic device establishes communication connection with the second electronic device through an ith network interface in the N network interfaces; n is a positive integer, and i is a positive integer not greater than N.
The i-th network interface may be any one of N network interfaces, or may be the first network interface, or may be a default network interface, or may be a network interface used in the last remote diagnosis, or may be a network interface with a minimum historical network delay.
S302: the first electronic device tests network latency for communication with the second electronic device through the ith network interface.
The network latency of the i-th network interface for communication with the second electronic device may be tested once, or may be tested multiple times, for example, M times, where M is a positive integer greater than 1, and the network latency of the i-th network interface for communication with the second electronic device may be an average of the M tests.
In one possible implementation, the first electronic device testing the network latency of communicating with the second electronic device through the ith network interface may be implemented by:
(1) The first electronic device sets an ith network interface in the N carried network interfaces as a default gateway. The first electronic device is equipped with one or more network interfaces, and in the following, N network interfaces are taken as an example, where N is a positive integer. The network interface is used for connecting the electronic equipment with the second electronic equipment, so that the data transmission of the geographic position, fault information and the like of the vehicle is facilitated.
(2) The first electronic device establishes communication connection with the second electronic device through the default gateway.
(3) The first electronic equipment obtains the current time t 1 。
(4) The first electronic device sends a test command to the second electronic device.
(5) The second electronic device sends a response to the first electronic device.
(6) When the first electronic device detects the response of the second electronic device, the first electronic device acquires the current time t 2 。
(7) The first electronic device is according to t 1 And t 2 And calculating the network delay of the default gateway.
The network time delay is the time difference between the time of system operation when the first electronic device receives the response and the time of the first electronic device sending the test command.
S303: and judging that the network delay of the ith network interface meets a first preset condition, if so, executing S304, otherwise, executing S305.
The first preset condition may be that the network delay of the network interface is smaller than a first delay threshold, or that the target delay is smaller than a third delay threshold, or that the target delay is smaller than a fifth delay threshold. The details of the second to fourth embodiments can be referred to in the description of the second to fourth embodiments, and the description thereof will not be repeated here.
S304: the first electronic device performs data transmission with the second electronic device through the ith network interface.
S305: and the first electronic equipment performs data transmission with the second electronic equipment through a network interface with network delay meeting a second preset condition in the N network interfaces.
The second preset condition may be that the target delay in the N network interfaces is minimum.
In another implementation, the first electronic device may perform S305 when none of the N network interfaces satisfies the first preset condition. When the ith network interface does not meet the first preset condition, the i=i+1 may be caused to execute S301; when i=n, judging whether all of the N network interfaces do not meet the first preset condition.
In one implementation, first, the in-vehicle terminal 10 establishes a communication connection with the diagnostic terminal 20 through an i-th network interface of the N network interfaces; n is a positive integer, and i is a positive integer not greater than N. Then, the in-vehicle terminal 10 tests the network delay of the communication with the diagnostic terminal 20 through the i-th network interface. Next, the vehicle-mounted terminal 10 determines that the network delay of the ith network interface satisfies the first preset condition according to the tested network delay, and the following cases are discussed:
if the target delay of the network interface is less than the third delay threshold, the in-vehicle terminal 10 performs data transmission with the diagnostic terminal 20 through the i-th network interface. The details of S503 in the third embodiment can be referred to, and will not be described herein.
If the target delay of the network interface is smaller than the fifth delay threshold, the in-vehicle terminal 10 performs data transmission with the diagnostic terminal 20 through the i-th network interface. The details can be seen from the description of S603 in the fourth embodiment, and the details are not repeated here.
If the network delay of the network interface does not meet the first preset condition, the in-vehicle terminal 10 tests the network delay through the i+1th network interface and executes S301 to S303. In one implementation, if none of the N network interfaces satisfies the first preset condition, the target delay of the N network interfaces is calculated, and the specific method for calculating the target delay may be referred to the description in S503 of the third embodiment, which is not repeated here. Next, the in-vehicle terminal 10 performs data transmission with the diagnostic terminal 20 through a network interface, of the N network interfaces, for which the network delay satisfies a second preset condition. The second preset condition may be that the target delay of the network interface is minimum, that is, the vehicle terminal 10 performs data transmission with the diagnostic terminal 20 through the network interface with the minimum target delay of the N network interfaces.
When judging that the network delay of the ith network interface meets the first preset condition, the vehicle-mounted terminal 10 performs data transmission with the diagnosis terminal 20 through the ith network interface, and selects the network interface with the minimum network delay or the network interface with the smaller network delay for remote diagnosis, so that the network delay in the vehicle remote diagnosis process can be effectively reduced, the success of remote diagnosis is ensured, and the time cost is saved.
Embodiment two:
specifically, as exemplarily shown in fig. 4, a flow chart of a method for transmitting data in remote diagnosis is shown, and the method may include, but is not limited to, some or all of the following steps:
s401: the first electronic device sets an ith network interface in the N carried network interfaces as a default gateway.
The first electronic device is equipped with one or more network interfaces, and in the following, N network interfaces are taken as an example, where N is a positive integer. The network interface is used for connecting the first electronic equipment with the second electronic equipment, so that data such as geographic positions of vehicles and fault information can be conveniently transmitted.
The description of the first electronic device and the second electronic device may refer to related embodiments of the first electronic device and the second electronic device in the data transmission method related to the embodiments of the present application, which are not repeated herein.
S402: the first electronic device establishes communication connection with the second electronic device through the default gateway.
S403: the first electronic equipment obtains the current time t 1 。
S404: the first electronic device sends a test command to the second electronic device.
S405: when the first electronic device detects the response of the second electronic device, the first electronic device acquires the current time t 2 。
S406: the first electronic device is according to t 1 And t 2 And calculating the network delay of the default gateway.
In some embodiments, when a network latency of the first electronic device in communication with the second electronic device through the network interface is less than a first latency threshold, the first electronic device performs data transmission with the second electronic device through the network interface, and S407 is performed.
When the network delay of the first electronic device in communication with the second electronic device through the network interface is greater than a first delay threshold, the first electronic device directly ends the test flow, and the first electronic device resets the (i+1) th network interface as a default gateway, and executes S401-S406.
The first delay threshold is a reasonable one set empirically and the network delay of the relatively small network interface may be, for example, 30 milliseconds. When the network delay of the ith network interface is smaller than the first delay threshold, the network delay of the ith network interface is indicated to be in accordance with the requirement of data transmission between the first electronic equipment and the second electronic equipment, and at the moment, the first electronic equipment can transmit data between the network interface and the second electronic equipment. The method reduces the network time delay and saves the time cost.
S407: the first electronic device performs data transmission with the second electronic device through a network interface with network time delay smaller than a first time delay threshold value, and performs remote diagnosis on the fault vehicle.
By adopting the data transmission method provided by the embodiment of the application, the relation between the network delay of the network interface and the first delay threshold is judged by testing the network delay of the network interface, if the network delay of the network interface is smaller than the first delay threshold, the network delay is smaller, and at the moment, the first electronic equipment selects the network interface with smaller network delay for remote diagnosis, so that the network delay in the vehicle remote diagnosis process can be effectively reduced, and the success of remote diagnosis is ensured. Meanwhile, all network interfaces are not required to be tested, so that the time cost is saved.
Example III
Specifically, as exemplarily shown in fig. 5, a flow chart of a method for transmitting data in remote diagnosis is shown, and the method may include, but is not limited to, some or all of the following steps:
s501: the first electronic device sets an ith network interface in the N carried network interfaces as a default gateway.
The first electronic device is equipped with one or more network interfaces, and in the following, N network interfaces are taken as an example, where N is a positive integer. The network interface is used for connecting the first electronic equipment with the second electronic equipment, so that data such as geographic positions of vehicles and fault information can be conveniently transmitted.
The description of the first electronic device and the second electronic device may refer to related embodiments of the first electronic device and the second electronic device in the data transmission method related to the embodiments of the present application, which are not repeated herein.
S502: the first electronic device establishes communication connection with the second electronic device through the default gateway.
S503: the first electronic device calculates a network delay for a jth test of the default gateway.
Specifically, the method for testing the network delay of the default gateway may refer to the description related to S403 to S406 in the second embodiment, which is not described herein.
The first electronic device tests one or more times for network latency in communication with the second electronic device through the network interface. In the following description, M tests are taken as an example, and M is a positive integer. The jth test may be any one of M tests, which is not limited in the embodiment of the present application, and j is a positive integer. In some embodiments, when the network latency of the j-th time of the first electronic device in communication with the second electronic device through the network interface is less than the first latency threshold, the first electronic device performs data transmission with the second electronic device through the current default gateway, and S504 is performed.
Otherwise, when the network delay of the jth time of the first electronic device in communication with the second electronic device through the network interface is larger than the second delay threshold value, the first electronic device directly ends the test flow. The first electronic device resets the (i+1) th network interface as a default gateway, and performs S501-S503.
The second delay threshold is a network delay of a network interface set empirically, which corresponds to an upper limit of the network delay, for example, 80 ms. When the network delay of the network interface is greater than the second delay threshold, the network delay of the network interface is larger, and the requirement of data transmission is not met, and at this time, the first electronic device can test the network delay of the next network interface. The setting of the second time delay threshold value can save time cost while reducing network time delay.
When the network latency of the j-th time the first electronic device is communicating with the second electronic device through the network interface is not greater than the second latency threshold and is less than the first latency threshold, two scenarios are discussed:
if j=m and i=n, the first electronic device calculates the target delays of the currently available network interfaces of the N network interfaces respectively. And performing data transmission with the second electronic device through the network interface with the minimum target delay, and executing S504.
In one implementation, the first electronic device may select an average of a plurality of network delays of the currently available network interfaces as the target delay for the network interface.
In another implementation, the first electronic device may also select a maximum value or any one value of the plurality of network delays of the currently available network interface as the target delay of the network interface.
If j=m, and i < N, two cases are discussed:
in one implementation, when the target latency of the default gateway is less than the third latency threshold, data transmission is performed with the second electronic device through the default gateway, and S504 is performed.
In another implementation, when the target latency of the default gateway is not less than the third latency threshold, the first electronic device resets the i+1th network interface to the default gateway, and performs S501-S503.
If j < M, the electronic device performs the j+1st test, and S503 is executed.
The third delay threshold is a target delay threshold set empirically, for example, may be 30 ms, when the target delay of the default gateway is smaller than the third delay threshold, which indicates that the target delay already meets the requirement of data transmission, and at this time, the first electronic device may perform data transmission with the second electronic device through the default gateway. The setting of the third delay threshold can save time cost while reducing network delay.
S504: the first electronic device performs data transmission with the second electronic device through a network interface with network time delay smaller than a first time delay threshold value, target time delay smaller than a third time delay threshold value or target time delay minimum, and performs remote diagnosis on the fault vehicle.
As shown in fig. 5, S504 includes two cases:
case one: and the first electronic equipment performs data transmission with the second electronic equipment through the current default gateway, and performs remote diagnosis on the fault vehicle.
And a second case: the first electronic device performs data transmission with the second electronic device through a network interface with minimum target time delay, and performs remote diagnosis on the fault vehicle.
In the embodiment of the application, the first electronic device performs data transmission with the second electronic device through the network interface with the network delay smaller than the first delay threshold, the target delay smaller than the third delay threshold or the network interface with the minimum target delay, and the data transmission can be directly performed with the second electronic device through the ith network interface when the network delay of the jth test of the ith network interface is smaller than the first delay threshold, so that the rest network interfaces do not need to be tested, and the time cost is further saved on the basis of reducing the network delay. And the network interface with the target time delay smaller than the third time delay threshold value is used for carrying out data transmission with the second electronic equipment, so that the effects of reducing the network time delay and saving the time cost can be achieved.
Example IV
Specifically, as exemplarily shown in fig. 6, a flow chart of a method for transmitting data in remote diagnosis is shown, and the method may include, but is not limited to, some or all of the following steps:
s601: the first electronic device sets an ith network interface in the N carried network interfaces as a default gateway.
The first electronic device is equipped with one or more network interfaces, and in the following, N network interfaces are taken as an example, where N is a positive integer. The network interface is used for connecting the first electronic equipment with the second electronic equipment, so that data such as geographic positions of vehicles and fault information can be conveniently transmitted.
S602: the first electronic device establishes communication connection with the second electronic device through the default gateway.
S603: the first electronic device calculates a network delay for a jth test of the default gateway.
Specifically, the method for testing the network delay of the default gateway may refer to the description related to S403 to S406 in the second embodiment, which is not described herein. In some embodiments, when the network latency of the first electronic device in communication with the second electronic device over the network interface is less than a fourth latency threshold, two cases are discussed:
the fourth delay threshold is an empirically set upper limit value of network delay, for example, may be 70 ms, when the network delay of the network interface is greater than the fourth delay threshold, which indicates that the network delay of the network interface is greater and does not meet the requirement of data transmission, and at this time, the first electronic device tests the network delay passing through the i+1th network interface. And the fourth time delay threshold is set, so that M times of testing on network interfaces which do not meet the requirements can be avoided, and time is saved.
The first electronic device tests one or more times for network latency in communication with the second electronic device through the network interface. In the following description, M tests are taken as an example, and M is a positive integer.
If j=m and i=n, the first electronic device calculates the target delays of the currently available network interfaces of the N network interfaces respectively. And performing data transmission with the second electronic device through the network interface with the minimum target delay, and executing S604.
In one implementation, the first electronic device may select an average of the network delays of M tests of the currently available network interface as the target delay for the network interface.
In another implementation, the first electronic device may also select a maximum value or any value of the M tested network delays of the currently available network interfaces as the target delay of the network interface.
If j=m, and i < N, two cases are discussed:
in one implementation, when the target latency of the default gateway is less than the fifth latency threshold, data transmission is performed with the second electronic device through the default gateway, and S604 is performed.
In another implementation, when the target latency of the default gateway is not less than the fifth latency threshold, the first electronic device resets the i+1th network interface to the default gateway, and performs S601-S603. If j < M, the electronic device performs the j+1st test, and S603 is executed.
The fifth delay threshold is a target delay threshold set empirically, for example, may be 25 ms, and when the target delay of the default gateway is smaller than the fifth delay threshold, it indicates that the target delay already meets the requirement of data transmission, and at this time, the first electronic device may perform data transmission with the second electronic device through the default gateway. And setting the fifth time delay threshold value can save time cost while reducing network time delay.
In some embodiments, when the network latency of the first electronic device in communication with the second electronic device through the network interface is not less than the fourth latency threshold, the electronic device resets the i+1th network interface as a default gateway, performing S601-S603.
S604: the first electronic device performs data transmission with the second electronic device through a network interface with the target time delay smaller than a fifth time delay threshold or the target time delay minimum, and performs remote diagnosis on the fault vehicle.
As shown in fig. 6, S604 includes two cases:
case one: and the first electronic equipment performs data transmission with the second electronic equipment through the current default gateway, and performs remote diagnosis on the fault vehicle.
And a second case: the first electronic device performs data transmission with the second electronic device through a network interface with minimum target time delay, and performs remote diagnosis on the fault vehicle. By adopting the data transmission method provided by the embodiment of the application, the first electronic device performs data transmission with the second electronic device through the network interface with the target time delay smaller than the fifth time delay threshold or with the target time delay minimum. The network interfaces with the target time delay smaller than the fifth time delay threshold value and the second electronic equipment are used for data transmission, so that the test of other network interfaces can be avoided, the network time delay in the vehicle remote diagnosis process can be effectively reduced, the success of remote diagnosis is ensured, and the time cost can be saved.
The embodiment of the application also provides a data transmission device, which comprises: a communication setup module 60, a network test module 70, a data transmission module 80, as exemplarily shown in fig. 7.
The communication establishing module 60 is specifically configured to establish a communication connection with the second electronic device through an ith network interface of the N network interfaces; n is a positive integer, and i is a positive integer not greater than N.
The network test module 70 is specifically configured to communicate with the network latency of the second electronic device via the ith network interface.
The data transmission module is specifically configured to perform data transmission with the second electronic device through the ith network interface when the network delay of the ith network interface meets a first preset condition. And when the network delay of the ith network interface does not meet the first preset condition, carrying out data transmission with the second electronic equipment through the network interface of which the network delay meets the second preset condition in the N network interfaces.
The data transmission module 80 is specifically configured to perform data transmission with the second electronic device through the ith network interface when the network delay for communicating with the second electronic device through the ith network interface is less than the first delay threshold.
The network test module 70 is specifically configured to perform at least one test including a jth test, where j is a positive integer, and the jth test includes:
Testing the network delay communicated with the second electronic equipment through the ith network interface when the network delay obtained by the j-1 test is larger than the first delay threshold and smaller than the second delay threshold; and testing the network delay communicated with the second electronic equipment through the (i+1) th network interface when the network delay obtained by the j-1 th test is larger than the second delay threshold.
The data transmission module 80 is specifically configured to perform data transmission with the second electronic device through the ith network interface if the network delay obtained by the jth test is less than the first delay threshold when the ith network interface is tested at least once.
The network test module 70 is specifically configured to determine that the ith network interface does not meet the first preset condition when the network delay obtained in the j-1 th test is greater than the second delay threshold while at least one test is performed on the ith network interface.
The network test module 70 is specifically configured to calculate a target delay for the ith network interface.
The data transmission module 80 is specifically configured to perform data transmission with the second electronic device through a network interface with a minimum target delay among the N network interfaces.
The network testing module 70 is specifically configured to test the network delay through each of the N network interfaces M times; the target delay of each network interface is the average value of the network delays obtained by M test.
The data transmission module 80 is specifically configured to perform data transmission with the second electronic device through the ith network interface when the target delay of the ith network interface is less than the third delay threshold.
In the above-described embodiments, all or part of the functions may be implemented by software, hardware, or a combination of software and hardware. 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, produces a flow or function in accordance with embodiments of the present application, in whole or in part. The computer may be a general purpose computer, a special purpose computer, a computer network, or other programmable apparatus. The computer instructions may be stored in a computer readable storage medium. The computer readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server, data center, etc. that contains an integration of one or more available media. The usable medium may be a magnetic medium (e.g., a floppy disk, a hard disk, a magnetic tape), an optical medium (e.g., a DVD), or a semiconductor medium (e.g., a Solid State Disk (SSD)), or the like.
The terminology used in the embodiments of the application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used in the specification and the appended claims, the singular forms "a," "an," "the," and "the" are intended to include the plural forms as well, unless the context clearly indicates to the contrary.
It should be further understood that the terms "comprises" and "comprising," when used in this specification and the appended claims, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. Furthermore, the terms "first," "second," "target," and the like, are used for distinguishing between different objects and not for describing a particular sequential order. The term "plurality" refers to two or more than two.
It should be further understood that reference throughout this application to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the present application. The appearances of such phrases in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those of skill in the art will explicitly and implicitly understand that the embodiments described herein may be combined with other embodiments.
While the invention has been described with reference to certain preferred embodiments, it will be understood by those skilled in the art that various changes and substitutions of equivalents may be made and equivalents will be apparent to those skilled in the art without departing from the scope of the invention. Therefore, the protection scope of the invention is subject to the protection scope of the claims.
Claims (9)
1. A method of data transmission, the method comprising:
the first electronic device establishes communication connection with the second electronic device through an ith network interface in the N network interfaces; n is a positive integer, i is a positive integer not greater than N;
the first electronic device tests network delay of communication with the second electronic device through the ith network interface at least once, wherein at least one test comprises M tests, and M is a positive integer;
when the network delay of the ith network interface meets a first preset condition, the first electronic equipment performs data transmission with the second electronic equipment through the ith network interface, wherein the first preset condition comprises that the network delay of the communication between the ith network interface and the second electronic equipment is smaller than a first delay threshold;
When the network delay of the ith network interface does not meet a first preset condition, the first electronic device performs data transmission with the second electronic device through a network interface, of the N network interfaces, of which the network delay meets a second preset condition, wherein the second preset condition is that the target delay of the N network interfaces is minimum;
the M times of tests comprise a jth test, j is a positive integer, and the method further comprises:
when the network time delay obtained by the jth test is larger than the first time delay threshold and smaller than a second time delay threshold, if j=m and i=n, carrying out data transmission with the second electronic equipment through the network interface with the minimum target time delay;
and testing the network delay communicated with the second electronic equipment through the (i+1) th network interface when the network delay obtained by the jth test is larger than a second delay threshold.
2. The method of claim 1, wherein the jth test comprises:
testing the network delay communicated with the second electronic equipment through the ith network interface when the network delay obtained by the j-1 th test is larger than a first delay threshold and smaller than a second delay threshold;
And testing the network delay communicated with the second electronic equipment through the (i+1) th network interface when the network delay obtained by the j-1 th test is larger than a second delay threshold value.
3. The method according to claim 2, wherein the first electronic device performs data transmission with the second electronic device through the i-th network interface when the network delay of the i-th network interface satisfies a first preset condition, including:
and when the ith network interface is tested at least once, if the network time delay obtained by the jth test is smaller than a first time delay threshold, the first electronic equipment performs data transmission with the second electronic equipment through the ith network interface.
4. The method of claim 2, wherein before the first electronic device performs data transmission with the second electronic device through a network interface of the N network interfaces whose network delay satisfies a second preset condition when the network delay of the i-th network interface does not satisfy the first preset condition, the method further comprises:
and when the ith network interface is tested at least once, if the network time delay obtained in the j-1 th test is larger than a second time delay threshold value, judging that the ith network interface does not meet the first preset condition.
5. The method of claim 2, wherein after the first electronic device tests a network delay for communicating with the second electronic device via the ith network interface at least once, comprising:
and the first electronic equipment calculates the target time delay of the ith network interface, wherein the target time delay is an average value of the network time delays obtained by the at least one test.
6. The method of claim 5, wherein the first electronic device performs data transmission with the second electronic device through the i-th network interface when the network delay of the i-th network interface satisfies a first preset condition, further comprising:
and when the target time delay of the ith network interface is smaller than a third time delay threshold value, carrying out data transmission with the second electronic equipment through the ith network interface.
7. A data transmission apparatus, the apparatus being applied to a first electronic device, comprising:
the communication establishing module is used for establishing communication connection with the second electronic equipment through an ith network interface in the N network interfaces; n is a positive integer, i is a positive integer not greater than N;
the network test module is used for testing network delay of communication between the ith network interface and the second electronic equipment at least once, wherein the at least one test comprises M times of tests, and M is a positive integer;
The data transmission module is used for transmitting data between the first electronic device and the second electronic device through the ith network interface when the network delay of the ith network interface meets a first preset condition, wherein the first preset condition comprises that the network delay of the communication between the ith network interface and the second electronic device is smaller than a first delay threshold;
when the network delay of the ith network interface does not meet a first preset condition, carrying out data transmission with the second electronic equipment through the network interface, of which the network delay meets a second preset condition, in the N network interfaces, wherein the second preset condition is that the target delay in the N network interfaces is minimum;
the M times of tests comprise a jth test, j is a positive integer, and the device further comprises:
the data transmission module is specifically configured to perform data transmission with the second electronic device through the network interface with the minimum target delay if j=m and i=n when the network delay obtained by the jth test is greater than the first delay threshold and less than the second delay threshold;
and the network test module is further configured to test the network delay for communication with the second electronic device through the i+1th network interface when the network delay obtained by the jth test is greater than a second delay threshold.
8. An electronic device comprising one or more memories for storing data and instructions, one or more processors for invoking the data and instructions stored in the memories to perform the method of any of claims 1-6.
9. A computer-readable storage medium, comprising: computer instructions; the computer instructions, when run on an electronic device, cause the electronic device to perform the method of any one of claims 1-6.
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