CN114780288A - A data playback method, device and storage medium - Google Patents

Abstract

The invention provides a data playback method, a device and a storage medium, at least comprising: establishing playback communication path connection, and selecting an output channel interface required by data playback in playback output equipment adopted in the playback communication path connection; configuring playback parameters required by a playback path and selecting a required playback data file; and outputting the playback data through the input channel interface. The connection of the playback communication path is based on the interaction of the upper computer and the playback output equipment. According to the technical scheme provided by the invention, the vehicle-mounted Ethernet real-time data and the CAN real-time data with high bandwidth and high throughput CAN be played back, and bugs appearing in the vehicle-mounted network sensor communication CAN be timely and accurately acquired by customizing the message format of the interactive data packet.

Description

A data playback method, device and storage medium

technical field

The present invention relates to the technical field of automotive sensors, in particular to a data playback method, device and storage medium.

Background technique

In recent years, with the development and progress of technology, it has promoted the progress of the automobile industry, and the automobile industry has continued to move forward in the direction of assisted driving, automatic driving, and unmanned driving, making the traditional vulgar and high-reliability transmission CAN bus unable to meet the requirements of image or The sensors of video and lidar need high bandwidth and low delay. The vehicle Ethernet bus technology has high bandwidth, real-time performance and low cost, which is an inevitable choice. However, the CAN bus still has better performance due to its high reliability. practicability. In the test between different vehicle Ethernet interface devices and CAN devices, the existing test equipment does not have the function of data playback, but only obtains the transmitted data packets from the ECU. Since data playback cannot be performed, if there is a problem during the transmission process , it is impossible to restore the communication status at that time, making it difficult for engineers to find problems.

SUMMARY OF THE INVENTION

Based on the defects existing in the prior art, the present invention provides a data playback method based on at least:

Establish a playback communication path connection, and select the output channel interface required for data playback in the playback output device used in the playback communication path connection;

Configure the playback parameters required by the playback path and select the desired playback data file;

The playback data is output through the input channel interface.

A data playback method, further optionally, according to the playback parameter setting, the required output channel interface and the associated parameters corresponding to the required output channel interface are sent to the playback output device together.

A data playback method, further optionally, the connection of the playback communication path is based on the interaction between the upper computer and the playback output device.

A data playback method, further optionally, after the playback output device receives the control command sent by the playback communication path, it performs associated parameter setting and mode switching, and sends the execution result response to the host computer.

A data playback method, further optionally, the output channel interface includes at least one of: TE0, TE1, RJ45, CAN0, and CAN1.

A data playback method, further optionally, the playback parameters include at least: setting a playback list, selecting single playback or loop playback;

For loop playback, set the number of loops and/or infinite loop, and set the interval between playback files and/or set the interval between each data packet.

A data playback method, further optionally, the data packet message for transmitting playback parameters includes at least:

dstAddr: destination physical address;

srcAddr: source physical address;

enable: channel master switch;

channel: 8bit field, each bit represents the switch of a channel, 1 means on, 0 means off, followed by TE0, TE1, RJ45, CAN0, CAN1, and the remaining 3 bits are reserved;

can0Type: This field is valid if CAN0 of the channel field is 1, meaning: 0 means CAN frame, 1 means CANFD frame;

can0FrameType: This field is valid if CAN0 of the channel field is 1, meaning: 0 means standard frame, 1 means extended frame.

A data playback method, further optionally, the data packet message sent in response to the execution result at least includes:

dstAddr: destination physical address;

srcAddr: source physical address;

enable: channel master switch;

channel: divided into 8Bit, each Bit represents a channel switch, 1 means on, 0 means off, followed by TE0, TE1, RJ45, CAN0, CAN1, the remaining 3Bit are reserved;

Or frameType: frame type; or packIdx: packet sequence number, increasing from 1; or ctrlType: mode type.

A data playback method, further optional, after the host computer receives the data packet of the execution result response, it judges whether the channel operation is successful according to the enable and channel fields and displays prompt information.

A data playback method, further optionally, the displayed prompt information includes at least: the sequence number of the current file list cycle, the number of cycles, the file sequence number of the current cycle, the total number of files, the name of the file currently being played back, or the progress bar of the current playback. one or more.

A data playback device, comprising a host computer and a playback output device, the host computer communicates with the playback device, the host computer stores a data playback program, and when the data playback program is executed, the host computer is caused to realize the above-mentioned method. step.

A computer-readable storage medium storing a computer program, used for the above-mentioned computer program for implementing the above-mentioned method, includes: when the computer program is executed by a processor, causing the processor to call the program to execute the above-mentioned method.

Beneficial effects:

In the technical scheme provided by the present invention, the high-bandwidth, high-throughput on-board Ethernet real-time data and CAN real-time data can be played back, while ensuring that the playback environment is consistent with the network environment when receiving the data. In addition, by customizing the message format of the interactive data package, the bugs in the communication of the in-vehicle network sensors can be accurately and timely obtained, reducing the redundant work of engineers and technicians.

Description of drawings

The following drawings merely illustrate and explain the present invention schematically, and do not limit the scope of the present invention.

Fig. 1 is a schematic diagram of a host computer and a playback output device included in the establishment of a playback communication path according to an embodiment of the present invention.

FIG. 2 is a schematic diagram of feature relationships on which a data playback module depends in an embodiment of the present invention.

FIG. 3 is a standard definition of a packet message format for transmitting playback parameters in an embodiment of the present invention.

FIG. 4 is a standard definition of the format of a data packet message sent in response to an execution result in an embodiment of the present invention.

Detailed ways

In order to have a clearer understanding of the technical features, objects and effects herein, the specific embodiments of the present invention will now be described with reference to the accompanying drawings, in which the same reference numerals denote the same parts. For the sake of brevity of the drawings, the parts relevant to the present invention are schematically shown in the drawings, and do not represent the actual structure as a product. In addition, in order to make the drawings concise and easy to understand, only one of the components having the same structure or function in some drawings is schematically shown, or only one of them is marked.

Regarding the control system, functional modules and application programs (APP) are well known to those skilled in the art, and can take any appropriate form, either hardware or software, or a plurality of discretely set functional modules, or are multiple functional units integrated into one hardware. In its simplest form, the control system may be a controller, such as a combinational logic controller, a microprogrammed controller, or the like, so long as it can implement the operations described in this application. Of course, the control system can also be integrated into a physical device as different modules, all without departing from the basic principles and protection scope of the present invention.

In the present invention, "connection" may include direct connection, indirect connection, communication connection, and electrical connection, unless otherwise specified.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the present disclosure. As used herein, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly dictates otherwise. It will also be understood that, when used in the specification, the terms "comprising" and/or "comprising" refer to the presence of stated features, values, steps, operations, elements and/or components, but do not exclude the presence of One or more other features, values, steps, operations, elements, components, and/or groups of components thereof are present or additionally added. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items

It should be understood that the terms "vehicle" or "vehicle's" or other similar terms as used herein generally include motor vehicles, such as passenger cars including sport utility vehicles (SUVs), buses, trucks, various commercial vehicles, Includes various boats, ships' vessels, aircraft, etc., and includes hybrid vehicles, electric vehicles, plug-in hybrid electric vehicles, hydrogen-powered vehicles, and other alternative fuel vehicles (such as fuels derived from energy sources other than petroleum) . As mentioned herein, a hybrid vehicle is a vehicle having two or more power sources, such as both gasoline-powered and electric-powered vehicles.

Furthermore, the controller of the present disclosure may be embodied as a non-transitory computer readable medium on a computer readable medium containing executable program instructions to be executed by a processor, controller or the like. Examples of computer-readable media include, but are not limited to, ROM, RAM, compact disc (CD)-ROMs, magnetic tapes, floppy disks, flash drives, smart cards, and optical data storage devices. The computer-readable recording medium can also be distributed over network coupled computer systems so that the computer-readable medium is stored and executed in a distributed fashion, such as by a telematics server or a controller area network (CAN).

A data playback device of the present invention, referring to FIG. 1 to FIG. 4, specifically includes at least a host computer and a playback output device, the playback output device is provided with various types of output channel interfaces, and the host computer is connected with the playback output device. Define protocols for interactive communication;

The playback output device includes a vehicle test data development board, and the data development board integrates one or more of the vehicle Ethernet protocol stack, CAN protocol stack or TSN protocol stack;

The host computer and the playback output device establish a playback communication path connection, and the output channel interface includes at least one or more of the following types of interfaces, specifically:

Provides one or more of five groups of channel selection: TE0, TE1, RJ45, CAN0 and CAN1. After the user selects a channel, the corresponding channel parameters can be automatically obtained by default:

Specifically include

Among them, the corresponding parameters of TE0, TE1, and RJ45 are as follows:

Mode: Mode, options: Master, Slave

Rate: Rate, options: 1000Mbps, 100Mbps

in,

The corresponding parameters of CAN0 and CAN1 are as follows:

Type Can: Type, options: can, canfd;

Frame Type: frame type, options: standard, extend;

BaudRate(bps): baud rate;

DataBaudRate(bps): data baud rate, valid when Type is canfd;

Frame ID: frame ID, the value range is 0-0x7ff when Type is can, and the value range is 0-0xfff when Type is canfd;

Frame Filter Mask: Frame filter mask, the value range is 0-0x7ff when Type is can, and the value range is 0-0xfff when Type is canfd.

By setting the parameters corresponding to the above interfaces, it is possible to view the transmission function of data packets in the self-developed in-vehicle Ethernet protocol and CAN communication, and realize the function test that cannot be realized in the existing technology, so that the engineering and technical personnel of the OEM can pass the data playback. Observe the communication profile of different sensors in the vehicle.

Specifically, the host computer can be a computer, a SoC host, or an intelligent terminal, running on any one of the windows, linux, android, and QNX systems;

Specifically, the playback output device is a development board used for testing and verification, including a SoC chip, a memory chip, a MAC chip, and a PHY chip; or it can be based on an FPGA chip, or can be implemented using an ASIC chip.

Specifically, referring to Fig. 2, the host computer is provided with a data playback module, and the application HMI interface of the data playback module adopts QT or other third-party plug-ins to design, and the playback data pcap file reads and interacts with the lower computer and adopts the realization based on the npcap library;

In order to realize the message identification based on the mutual communication between existing CAN protocol, vehicle Ethernet protocol and vehicle Ethernet protocol, the present embodiment defines the communication protocol to host computer and playback output device:

The definition of the packet message format structure for transmitting playback parameters:

dstAddr: 6Byte destination physical address;

srcAddr: 6Byte source physical address;

frameType: 2Byte Frame type: 0x1915 for command, 0x1815 for data;

packIdx: 1Byte data packet sequence number (incremented from 1);

ctrlType: 1Byte mode type: data playback (0x72);

enable: 1Byte channel master switch: 0x1 enable, 0x0 stop;

channel: 1Byte is divided into 8Bits, each Bit represents a channel switch, 1 means on, 0 means off, followed by TE0, TE1, RJ45, CAN0, CAN1, and the remaining 3Bit are reserved;

can0Type: 1Byte If the CAN0 of the channel field is 1, this field is valid, meaning: 0-CAN frame 1-CANFD frame;

can0FrameType: 1Byte If the CAN0 of the channel field is 1, this field is valid, meaning: 0-standard frame 1-extended frame;

can0BaudRate: 4Byte, if the CAN0 of the channel field is 1, this field is valid, the baud rate (bps);

can0DataBaudRate: 4Byte If CAN0 of the channel field is 1, this field is valid, and the data baud rate (bps) is only available in CANFD;

can0FrameId: 4Byte If CAN0 of channel field is 1, this field is valid, frame ID

can1Type: 1Byte If the CAN1 of the channel field is 1, this field is valid, meaning: 0-CAN frame 1-CANFD frame;

can1FrameType: 1Byte If the CAN1 of the channel field is 1, this field is valid, meaning: 0-standard frame 1-extended frame;

can1BaudRate: 4Byte If the CAN1 of the channel field is 1, this field is valid, the baud rate (bps);

can1DataBaudRate: 4Byte If CAN1 of the channel field is 1, this field is valid, and the data baud rate (bps) is only available in CANFD;

can1FrameId: 4Byte If CAN1 of channel field is 1, this field is valid, frame ID.

As shown in Figure 3, Figure 3 shows the packet message that transmits the playback parameters

The format definition of the data packet sent in response to the execution result:

dstAddr: 6Byte destination physical address;

srcAddr: 6Byte source physical address;

frameType: 2Byte Frame type: 0x1915 for command, 0x1815 for data;

packIdx: 1Byte data packet sequence number (incremented from 1);

ctrlType: 1Byte Mode type: data playback (0x72);

enable: 1Byte channel master switch: 0x1 enable, 0x0 stop;

channel: 1Byte is divided into 8Bit, each Bit represents a channel switch, 1 means on, 0 means off, followed by TE0, TE1, RJ45, CAN0, CAN1, and the remaining 3Bit are reserved.

As shown in Figure 4, Figure 4 shows the data packet message sent in response to the execution result.

Specifically, the data playback module consists of the following three sub-interfaces, and the sub-interfaces form the logical calling relationship of the corresponding API interface to realize the data playback function. Specifically:

The first interface interface is used for data playback, and can call the second configuration interface and the third function interface;

The second configuration interface is used to instantiate a configuration object and is called by the first interface interface, and can also call the third functional interface;

The third functional interface is used to provide the first interface interface and/or the second configuration interface with a callback function that realizes the function, and specifically includes:

Switch the normal mode of the playback output device to the data playback mode, and set the corresponding playback channel and channel parameters;

Cancel the playback mode setting from the current mode of the playback output device;

Start playback of data files;

Stop the playback of the data file.

Specifically, based on the above-mentioned provision of a data playback device, the present embodiment provides a data playback method, which specifically includes:

Establish a playback communication path connection, and select the output channel interface required for data playback in the playback output device used in the playback communication path connection;

Configure the playback parameters required by the playback path and select the desired playback data file;

The playback data is output through the input channel interface.

The connection of the playback communication path is based on the interaction between the host computer and the playback output device.

According to the playback parameter setting, the required output channel interface and the corresponding parameters corresponding to the required output channel interface are sent to the playback output device.

After the playback output device receives the control command sent by the playback communication path, it executes the associated parameter setting and mode switching, and sends the execution result response to the upper computer.

The output channel interface includes at least one of TE0, TE1, RJ45, CAN0, and CAN1, and each interface defines corresponding parameters.

Set the playback list, choose single playback or loop playback;

For loop playback, set the number of loops and/or infinite loop, and set the interval between playback files and/or set the interval between each data packet.

The data packets that transmit playback parameters include at least:

dstAddr: destination physical address;

srcAddr: source physical address;

enable: channel master switch;

channel: 8bit field, each bit represents the switch of a channel, 1 means on, 0 means off, followed by TE0, TE1, RJ45, CAN0, CAN1, and the remaining 3 bits are reserved;

can0Type: This field is valid if CAN0 of the channel field is 1, meaning: 0 means CAN frame, 1 means CANFD frame;

can0FrameType: This field is valid if CAN0 of the channel field is 1, meaning: 0 means standard frame, 1 means extended frame.

The data packets that transmit playback parameters include at least:

dstAddr: destination physical address;

srcAddr: source physical address;

enable: channel master switch;

channel: 8bit field, each bit represents the switch of a channel, 1 means on, 0 means off, followed by TE0, TE1, RJ45, CAN0, CAN1, and the remaining 3 bits are reserved;

can0Type: This field is valid if CAN0 of the channel field is 1, meaning: 0 means CAN frame, 1 means CANFD frame;

can0FrameType: This field is valid if CAN0 of the channel field is 1, meaning: 0 means standard frame, 1 means extended frame.

After the host computer receives the data packet of the execution result response, it judges whether the operation of the channel is successful according to the enable and channel fields and displays the prompt information.

The sequence number of the current file list loop, the number of loops, the file sequence number of the current loop, the total number of files, the name of the file currently being played back, or one or more of the current playback progress bar.

The above are only preferred embodiments of the present invention, and the present invention is not limited to the above embodiments. Those skilled in the art can understand that the form in this embodiment is not limited to this, and the adjustable manner is also not limited to this. It can be understood that other improvements and changes directly derived or thought of by those skilled in the art without departing from the basic concept of the present invention should all be considered to be included within the protection scope of the present invention.

Claims (12)

1. a data playback method, is characterized in that, comprises at least: Establish a playback communication path connection, and select the output channel interface required for data playback in the playback output device used in the playback communication path connection; Configure the playback parameters required by the playback path and select the desired playback data file; The playback data is output through the output channel interface. 2 . A data playback method as claimed in claim 1 , wherein the required output channel interface and the associated parameters corresponding to the required output channel interface are sent to the playback output device together according to the playback parameter setting. 3 . 3 . The data playback method according to claim 1 , wherein the connection of the playback communication path is based on the interaction between the host computer and the playback output device. 4 . 4 . A data playback method according to claim 1 , wherein after receiving the control command sent by the playback communication path, the playback output device executes associated parameter setting and mode switching, and sends the execution result response to the host computer. 5 . 5. The data playback method according to any one of claims 1 to 4, wherein the output channel interface comprises at least one of: TE0, TE1, RJ45, CAN0, and CAN1. 6. A data playback method according to claim 1, wherein the playback parameters at least include: setting a playback list, and selecting single playback or loop playback; In case of loop playback, set the number of loops and/or infinite loop, and set the interval time between playback files and/or set the interval time between each data packet. 7. a kind of data playback method as claimed in claim 1 is characterized in that, the data packet message of transmitting playback parameter comprises at least: dstAddr: destination physical address; srcAddr: source physical address; enable: channel master switch; channel: 8bit field, each Bit represents the switch of a channel, 1 means on, 0 means off, followed by TE0, TE1, RJ45, CAN0, CAN1, and the remaining 3 bits are reserved; can0Type: This field is valid if CAN0 of the channel field is 1, meaning: 0 means CAN frame, 1 means CANFD frame; can0FrameType: This field is valid if CAN0 of the channel field is 1, meaning: 0 means standard frame, 1 means extended frame. 8. a kind of data playback method as claimed in claim 4 is characterized in that, the data packet message sent in response to execution result at least comprises: dstAddr: destination physical address; srcAddr: source physical address; enable: channel master switch; channel: divided into 8Bit, each Bit represents a channel switch, 1 means on, 0 means off, followed by TE0, TE1, RJ45, CAN0, CAN1, and the remaining 3Bit are reserved; Or frameType: frame type; or packIdx: packet sequence number, increasing from 1; or ctrlType: mode type. 9. A kind of data playback method as claimed in claim 4, is characterized in that, after the host computer receives the data packet of the execution result response, according to enable and channel field, judges whether the channel is operated successfully and displays prompt information. 10. a kind of data playback method as claimed in claim 4 is characterized in that, displaying prompt information at least comprises: the serial number of current file list loop, the number of times of loop, the file serial number of current loop, the total number of files, the file name currently being played back or one or more of the current playback progress bar. 11. a data playback device, it is characterized in that, comprise host computer and playback output equipment, host computer communicates with playback equipment, host computer is stored with data playback program, when data playback program is executed, causes the host computer to realize. Steps in the method of any one of claims 1-10. 12. A computer-readable storage medium storing a computer program, characterized in that, when the computer program is executed by a processor, the processor is caused to implement the steps in the method of any one of claims 1-10 .

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