CN109861884A - Communication performance test method, the device and system of automated driving system - Google Patents
Communication performance test method, the device and system of automated driving system Download PDFInfo
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Abstract
This application provides communication performance test method, the device and system of automated driving system, are related to intelligent transportation testing field, test to the communication performance to automated driving system.It in this method, sends interference instruction and gives bus interferometer, so that bus interferometer generates interference to the packet sending and receiving function of automated driving system；After reaching specified duration, sends the halt instruction for stopping interfering and give bus interferometer, and start timing；When receiving the correct message that the automated driving system is sent, stop timing；The duration that timing is obtained is determined as duration needed for communication recovery；If duration needed for the communication recovery is within the scope of the good duration of preset expression communication performance, it is determined that the automated driving system communication performance is good.In this way, tester is known that whether automated driving system communication performance is good, when automated driving system communication performance is bad, it is optimized, guarantees vehicle and the safety of driver.
Description
Technical Field
The application relates to the field of intelligent traffic testing, in particular to a communication performance testing method, device and system of an automatic driving system.
Background
The rapid development of computer technology, internet and internet of things thinking brings brand-new innovation to the traditional automobile manufacturing industry, research shows that the automatic driving technology can greatly improve the efficiency of a traffic system and the safety of travel, and the automatic driving becomes the inevitable trend of the development of the automobile industry.
However, before the automatic driving automobile gets on the road, the automatic driving automobile needs to be subjected to a targeted test to prove the safety of the operation. At this point, it is necessary for the tester to risk testing the performance of the autonomous vehicle under different conditions.
Disclosure of Invention
In order to test the communication performance of an automatic driving system, the embodiment of the application provides a method, a device and a system for testing the communication performance of the automatic driving system.
In a first aspect, an embodiment of the present application provides a communication performance testing method for an automatic driving system. In the method, an interference instruction is sent to a bus interferometer so that the bus interferometer generates interference on a message receiving and sending function of an automatic driving system; after the specified time length is reached, sending a stopping instruction for stopping interference to the bus interferometer, and starting timing; stopping timing when a correct message sent by the automatic driving system is received; determining the time length obtained by timing as the time length required by communication recovery; and if the time length required by the communication recovery is within a preset time length range representing good communication performance, determining that the communication performance of the automatic driving system is good.
Further, the method further comprises:
and if the time length required by the communication recovery is not within a preset time length range representing good communication performance, determining that the communication performance of the automatic driving system is poor.
Further, receiving the correct message sent by the automatic driving system specifically includes:
receiving a message sent by an automatic driving system;
and if the message entity information is analyzed from the message, determining to receive the correct message sent by the automatic driving system.
In a second aspect, an embodiment of the present application further provides a communication performance testing system for an automatic driving system, where the system includes: terminal, bus interference appearance, CAN transceiver, vehicle control unit, wherein:
the terminal is connected with the bus interferometer through a USB (universal serial bus) line; the system comprises a bus interferometer, a time counter and a controller, wherein the time counter is used for sending an interference instruction to the bus interferometer at first, sending a stop instruction for stopping interference to the bus interferometer after a specified time length is reached, and starting timing; when a correct message forwarded by the bus interferometer is received, timing is stopped; determining the time length obtained by timing as the time length required by communication recovery; if the time length required by the communication recovery is within a preset time length range indicating that the communication performance is good, determining that the communication performance of the automatic driving system is good;
the bus interferometer is used for generating interference on the message receiving and sending functions of the automatic driving system when receiving the interference instruction; stopping the interference on the message receiving and sending functions of the automatic driving system when a stopping instruction is received;
the CAN transceiver is connected with the bus interferometer through a DB9 line and is used for receiving a message sent by the vehicle control unit and sending the message to the terminal through the bus interferometer; the vehicle control unit is used for bearing an automatic driving system.
Further, the terminal is further configured to determine that the communication performance of the automatic driving system is poor if the duration required for communication recovery is not within a preset duration range indicating that the communication performance is good.
Further, the terminal is specifically configured to:
receiving a message forwarded by a bus interferometer;
and if the message entity information is analyzed from the message, determining to receive the correct message sent by the automatic driving system.
In a third aspect, an embodiment of the present application further provides a communication performance testing apparatus of an automatic driving system. The device includes: the sending module is used for sending an interference instruction to the bus interferometer so that the bus interferometer generates interference on the message receiving and sending function of the automatic driving system; after the specified time length is reached, sending a stopping instruction for stopping interference to the bus interferometer, and starting timing;
the timing module is used for stopping timing when receiving a correct message sent by the automatic driving system;
the determining module is used for determining the time length obtained by timing as the time length required by communication recovery; and if the time length required by the communication recovery is within a preset time length range representing good communication performance, determining that the communication performance of the automatic driving system is good.
Further, the determining module is further configured to determine that the communication performance of the automatic driving system is poor if the duration required for communication recovery is not within a preset duration range indicating that the communication performance is good.
Further, the determining module is specifically configured to:
receiving a message sent by an automatic driving system;
and if the message entity information is analyzed from the message, determining to receive the correct message sent by the automatic driving system.
Another embodiment of the present application also provides a computing device comprising at least one processor; and a memory communicatively coupled to the at least one processor; the memory stores instructions executable by the at least one processor, and the instructions are executed by the at least one processor to enable the at least one processor to execute the communication performance testing method of any automatic driving system provided by the embodiment of the application.
Another embodiment of the present application further provides a computer storage medium, where the computer storage medium stores computer-executable instructions for causing a computer to execute a communication performance testing method of any of the autopilot systems in the embodiments of the present application.
According to the communication performance testing method, device and system of the automatic driving system, the bus interferometer is used for interfering the message receiving and sending function of the automatic driving system, the time from the stop of interference to the message receiving and sending function to the time when the correct message sent by the automatic driving system is received is the time required by communication recovery of the automatic driving system, and the communication recovery capability of the automatic driving system can be detected through the time.
Additional features and advantages of the application will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by the practice of the application. The objectives and other advantages of the application may be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments of the present invention will be briefly described below, and it is obvious that the drawings described below are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a flowchart of a communication performance testing method of an automatic driving system according to an embodiment of the present disclosure;
FIG. 2 is another flowchart of a communication performance testing method of the autopilot system according to an embodiment of the present application;
FIG. 3 is a schematic diagram of a communication performance testing system of an autopilot system according to an embodiment of the present application;
FIG. 4 is a schematic diagram of a communication performance testing apparatus of an automatic driving system according to an embodiment of the present application;
FIG. 5 is a schematic diagram of a computing device according to the present application in a real-time manner.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be described in further detail with reference to the accompanying drawings, and it is apparent that the described embodiments are only a part of the embodiments of the present invention, not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Currently, the automatic driving of automobiles becomes a focus of attention. However, before the autonomous vehicle gets on the road, it needs to be tested for pertinence to prove the safety of the operation. In view of this, the present application provides a method, an apparatus, and a system for testing communication performance of an automatic driving system. In order to clearly understand the technical solution provided by the embodiments of the present application, the following briefly describes the basic principle of the solution:
the communication performance of the automatic driving system determines the safety of the automatic driving system to a great extent. Therefore, in order to test the communication performance of the automatic driving system, the embodiment of the application provides a communication performance test method of the automatic driving system. In the method, an interference instruction is sent to a bus interferometer so that the bus interferometer generates interference on a message receiving and sending function of an automatic driving system; after the specified time length is reached, sending a stopping instruction for stopping interference to the bus interferometer, and starting timing; stopping timing when a correct message sent by the automatic driving system is received; determining the time length obtained by timing as the time length required by communication recovery; and if the time length required by the communication recovery is within a preset time length range representing good communication performance, determining that the communication performance of the automatic driving system is good.
Therefore, the bus interferometer interferes with the message receiving and sending function of the automatic driving system, the time from the stop of the interference to the reception of the correct message sent by the automatic driving system is the time required by the communication recovery of the automatic driving system, and the communication recovery capability of the automatic driving system can be detected through the time.
The technical scheme provided by the embodiment of the invention is described below by combining the accompanying drawings.
Fig. 1 is a flowchart of a communication performance testing method of an automatic driving system according to an embodiment of the present disclosure. The process comprises the following steps:
step 101: and sending an interference instruction to the bus interferometer so that the bus interferometer generates interference on the message receiving and sending functions of the automatic driving system.
Step 102: and after the specified time length is reached, sending a stopping instruction for stopping interference to the bus interferometer, and starting timing.
Step 103: and stopping timing when a correct message sent by the automatic driving system is received.
Step 104: and determining the time length obtained by timing as the time length required by communication recovery.
Step 105: and if the time length required by the communication recovery is within a preset time length range representing good communication performance, determining that the communication performance of the automatic driving system is good.
In specific implementation, the specified time length is set according to actual conditions, and may be set to 3s, 10s, and the like, for example. The preset duration indicating that the communication performance is good is set according to the attribute of the vehicle, for example, 1s-2s or less than 2s, and the like, and the present application is not limited thereto. When the bus interferometer interferes with the message receiving and sending functions of the automatic driving system, the automatic driving system can send error frame messages or stop sending messages. The autopilot system sends the correct message, i.e. the message which meets the predetermined protocol, without interference.
Therefore, the communication recovery performance of the automatic driving system can be tested, so that whether the communication recovery capacity of the automatic driving system is good or not is determined, and the requirement of being capable of going on the road is met.
And if the time length required by the communication recovery is not within a preset time length range representing good communication performance, determining that the communication performance of the automatic driving system is poor.
Specifically, when the communication performance of the automatic driving system is poor, the automatic driving system cannot be used for the road to ensure safety, and the automatic driving system needs to be optimized.
By the method, a tester can know whether the communication performance of the automatic driving system is good or not, and when the communication performance of the automatic driving system is poor, the automatic driving system is optimized, so that the safety of a vehicle and a driver is ensured.
In the above step 103, the step of receiving the correct message sent by the automatic driving system may be specifically executed as step a1-a2 shown in fig. 2:
step A1: and receiving a message sent by the automatic driving system.
Step A2: and if the message entity information is analyzed from the message, determining to receive the correct message sent by the automatic driving system.
In specific implementation, the protocol needs to be determined in advance by the automatic driving system and the software for receiving the message, and the message is sent by using the protocol. When the message transmitting and receiving functions of the automatic driving system are interfered, an error frame message is sent or the message sending is stopped. For an error frame message, the software receiving the message cannot analyze the message entity information from the message.
Therefore, whether the message sent by the automatic driving system is correct or not can be determined through the protocol determined in advance, and whether the communication function of the automatic driving system is recovered or not can be determined.
Based on the same inventive concept, the embodiment of the application provides a communication performance testing system of an automatic driving system. Fig. 3 is a schematic diagram of a communication performance testing system of an automatic driving system in an embodiment of the present application. The system comprises a terminal 100, a bus interferometer 101, a CAN transceiver 102 and a whole vehicle controller 103; wherein,
the terminal 100 is connected with the bus interferometer 101 through a USB cable; the system comprises a bus interferometer 101, a time counting module and a time counting module, wherein the time counting module is used for firstly sending an interference instruction to the bus interferometer 101, and then sending a stop instruction for stopping interference to the bus interferometer 101 and starting timing after a specified time length is reached; when receiving a correct message forwarded by the bus interferometer 101, stopping timing; determining the time length obtained by timing as the time length required by communication recovery; if the time length required by the communication recovery is within a preset time length range indicating that the communication performance is good, determining that the communication performance of the automatic driving system is good;
the bus interferometer 101 is used for generating interference on the message receiving and sending function of the automatic driving system when receiving an interference instruction; stopping the interference on the message receiving and sending functions of the automatic driving system when a stopping instruction is received;
the CAN transceiver 102 is connected with the bus interferometer 101 through a DB9 line, and is configured to receive a message sent by the vehicle control unit 103, and send the message to the terminal 100 through the bus interferometer 101;
the vehicle control unit 103 is used for bearing an automatic driving system.
In specific implementation, the terminal 100 needs software for analyzing message data, such as CANoe software. The terminal 100 may be a mobile phone, a personal computer, a notebook computer, a tablet computer, etc. The bus jammer 101 may use a VH6501 bus jammer. The interference of the bus interferometer 101 on the automatic driving system CAN realize a fault state that a CANH line in a CAN bus connected with the whole vehicle controller 103 and the CAN transceiver is short-circuited with the ground, so that the automatic driving system cannot correctly send a message. The terminal 100 cannot receive the correct message. The preset period of time indicating that the communication performance is good is set according to the attribute of the vehicle, for example, 1s-2s or less than 2 s.
Therefore, the purpose of testing the communication recovery performance of the automatic driving system can be achieved through the system, and testers can know the communication recovery performance of the automatic driving system.
Further, the terminal 100 is further configured to determine that the communication performance of the automatic driving system is poor if the duration required for communication recovery is not within a preset duration range indicating that the communication performance is good.
Therefore, when the fact that the communication performance of the automatic driving system is poor is determined, a tester can optimize the automatic driving system, and vehicle safety is guaranteed.
The terminal 100 is specifically configured to receive a message forwarded by the bus interferometer 101;
and if the message entity information is analyzed from the message, determining to receive the correct message sent by the automatic driving system.
The message data analysis software and the autopilot system in the terminal 100 need to negotiate a protocol in advance, and the terminal 100 can only analyze entity information from a message with a correct protocol.
In this way, the terminal 100 can determine whether the message sent by the automatic driving system is correct or not and whether the communication capability is recovered or not by analyzing the message sent by the automatic driving system.
In order to more clearly understand the technical solution provided by the embodiment of the present application, the following further explains the solution provided by the embodiment of the present application along fig. 3:
the terminal 100 sends an interference instruction to the bus jammer 101, and the bus jammer 101 interferes with the message transmitting and receiving functions of the automatic driving system. The terminal 100 cannot resolve the message forwarded by the bus jammer. After 3s (specified time period), the terminal 100 sends a stop instruction to the bus jammer 101 and starts timing. The bus jammer 101 stops the interference with the automatic driving system according to the stop instruction. The terminal 100 receives the message forwarded by the bus interferometer 101, analyzes the message entity information from the message, and stops timing. The time length obtained by timing is 1.05s, namely the time length required by communication recovery of the automatic driving system is less than 2 s. Therefore, it is determined that the automatic driving system communication recovery performance is good.
Based on the same inventive concept, the embodiment of the application also provides a communication performance testing device of the automatic driving system. As shown in fig. 4, which is a schematic view of a communication performance testing apparatus of an automatic driving system in an embodiment of the present application, the apparatus includes:
a sending module 401, configured to send an interference instruction to a bus interferometer, so that the bus interferometer generates interference on a message transceiving function of the autopilot system; after the specified time length is reached, sending a stopping instruction for stopping interference to the bus interferometer, and starting timing;
a timing module 402, configured to stop timing when receiving a correct message sent by the automatic driving system;
a determining module 403, configured to determine a time length obtained by timing as a time length required for communication recovery; and if the time length required by the communication recovery is within a preset time length range representing good communication performance, determining that the communication performance of the automatic driving system is good.
Further, the determining module 403 is further configured to determine that the communication performance of the automatic driving system is poor if the duration required for communication recovery is not within a preset duration range indicating that the communication performance is good.
Further, the determining module 403 is specifically configured to:
receiving a message sent by an automatic driving system;
and if the message entity information is analyzed from the message, determining to receive the correct message sent by the automatic driving system.
Having described the communication performance test method and apparatus of the automatic driving system according to the exemplary embodiment of the present application, a computing apparatus according to another exemplary embodiment of the present application will be described next.
As will be appreciated by one skilled in the art, aspects of the present application may be embodied as a system, method or program product. Accordingly, various aspects of the present application may be embodied in the form of: an entirely hardware embodiment, an entirely software embodiment (including firmware, microcode, etc.) or an embodiment combining hardware and software aspects that may all generally be referred to herein as a "circuit," module "or" system.
In some possible implementations, a computing device according to the present application may include at least one processor, and at least one memory. Wherein the memory stores program code which, when executed by the processor, causes the processor to perform the steps of the method for testing communication performance of an autopilot system according to various exemplary embodiments of the present application described above in this specification. For example, the processor may perform steps 101-105 as shown in FIG. 1 or steps A1-A2 as shown in FIG. 2.
The computing device 130 according to this embodiment of the present application is described below with reference to fig. 5. The computing device 130 shown in fig. 5 is only an example and should not bring any limitations to the functionality or scope of use of the embodiments of the present application.
As shown in FIG. 5, computing device 130 is embodied in the form of a general purpose computing device. Components of computing device 130 may include, but are not limited to: the at least one processor 131, the at least one memory 132, and a bus 133 that connects the various system components (including the memory 132 and the processor 131).
Bus 133 represents one or more of any of several types of bus structures, including a memory bus or memory controller, a peripheral bus, a processor, or a local bus using any of a variety of bus architectures.
The memory 132 may include readable media in the form of volatile memory, such as Random Access Memory (RAM)1321 and/or cache memory 1322, and may further include Read Only Memory (ROM) 1323.
Memory 132 may also include a program/utility 1325 having a set (at least one) of program modules 1324, such program modules 1324 including, but not limited to: an operating system, one or more application programs, other program modules, and program data, each of which, or some combination thereof, may comprise an implementation of a network environment.
Computing device 130 may also communicate with one or more external devices 134 (e.g., keyboard, pointing device, etc.), with one or more devices that enable a user to interact with computing device 130, and/or with any devices (e.g., router, modem, etc.) that enable computing device 130 to communicate with one or more other computing devices. Such communication may occur via input/output (I/O) interfaces 135. Also, computing device 130 may communicate with one or more networks (e.g., a Local Area Network (LAN), a Wide Area Network (WAN), and/or a public network, such as the internet) via network adapter 136. As shown, network adapter 136 communicates with other modules for computing device 130 over bus 133. It should be understood that although not shown in the figures, other hardware and/or software modules may be used in conjunction with computing device 130, including but not limited to: microcode, device drivers, redundant processors, external disk drive arrays, RAID systems, tape drives, and data backup storage systems, among others.
In some possible embodiments, the aspects of the communication performance testing method of an autopilot system provided by the present application may also be implemented in the form of a program product comprising program code for causing a computer device to perform the steps of the communication performance testing method of an autopilot system according to various exemplary embodiments of the present application described above in this specification when the program product is run on the computer device, for example, the computer device may perform the steps 101-105 as shown in fig. 1 or the steps a1-a2 as shown in fig. 2.
The program product may employ any combination of one or more readable media. The readable medium may be a readable signal medium or a readable storage medium. A readable storage medium may be, for example, but not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination of the foregoing. More specific examples (a non-exhaustive list) of the readable storage medium include: an electrical connection having one or more wires, a portable disk, a hard disk, a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.
The program product for communication performance testing of an autopilot system of an embodiment of the present application may employ a portable compact disc read only memory (CD-ROM) and include program code and may be executable on a computing device. However, the program product of the present application is not limited thereto, and in this document, a readable storage medium may be any tangible medium that can contain, or store a program for use by or in connection with an instruction execution system, apparatus, or device.
A readable signal medium may include a propagated data signal with readable program code embodied therein, for example, in baseband or as part of a carrier wave. Such a propagated data signal may take any of a variety of forms, including, but not limited to, electro-magnetic, optical, or any suitable combination thereof. A readable signal medium may also be any readable medium that is not a readable storage medium and that can communicate, propagate, or transport a program for use by or in connection with an instruction execution system, apparatus, or device.
Program code embodied on a readable medium may be transmitted using any appropriate medium, including but not limited to wireless, wireline, optical fiber cable, RF, etc., or any suitable combination of the foregoing.
Program code for carrying out operations of the present application may be written in any combination of one or more programming languages, including an object oriented programming language such as Java, C + + or the like and conventional procedural programming languages, such as the "C" programming language or similar programming languages. The program code may execute entirely on the user computing device, partly on the user equipment, as a stand-alone software package, partly on the user computing device and partly on a remote computing device, or entirely on the remote computing device or server. In the case of remote computing devices, the remote computing device may be connected to the user computing device through any kind of network, including a Local Area Network (LAN) or a Wide Area Network (WAN), or may be connected to an external computing device (e.g., through the internet using an internet service provider).
It should be noted that although several units or sub-units of the apparatus are mentioned in the above detailed description, such division is merely exemplary and not mandatory. Indeed, the features and functions of two or more units described above may be embodied in one unit, according to embodiments of the application. Conversely, the features and functions of one unit described above may be further divided into embodiments by a plurality of units.
Further, while the operations of the methods of the present application are depicted in the drawings in a particular order, this does not require or imply that these operations must be performed in this particular order, or that all of the illustrated operations must be performed, to achieve desirable results. Additionally or alternatively, certain steps may be omitted, multiple steps combined into one step execution, and/or one step broken down into multiple step executions.
As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
While the preferred embodiments of the present application have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all alterations and modifications as fall within the scope of the application.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present application without departing from the spirit and scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is intended to include such modifications and variations as well.
Claims (10)
1. A communication performance testing method of an automatic driving system, characterized by comprising:
sending an interference instruction to a bus interferometer so that the bus interferometer generates interference on a message receiving and sending function of the automatic driving system;
after the specified time length is reached, sending a stopping instruction for stopping interference to the bus interferometer, and starting timing;
stopping timing when a correct message sent by the automatic driving system is received;
determining the time length obtained by timing as the time length required by communication recovery;
and if the time length required by the communication recovery is within a preset time length range representing good communication performance, determining that the communication performance of the automatic driving system is good.
2. The method of claim 1, further comprising:
and if the time length required by the communication recovery is not within a preset time length range representing good communication performance, determining that the communication performance of the automatic driving system is poor.
3. The method according to claim 1, wherein receiving the correct message sent by the autopilot system specifically comprises:
receiving a message sent by an automatic driving system;
and if the message entity information is analyzed from the message, determining to receive the correct message sent by the automatic driving system.
4. A communication performance test system of an automatic driving system, characterized in that the system comprises: terminal, bus interference appearance, CAN transceiver, vehicle control unit, wherein:
the terminal is connected with the bus interferometer through a USB (universal serial bus) line; the system comprises a bus interferometer, a time counter and a controller, wherein the time counter is used for sending an interference instruction to the bus interferometer at first, sending a stop instruction for stopping interference to the bus interferometer after a specified time length is reached, and starting timing; when a correct message forwarded by the bus interferometer is received, timing is stopped; determining the time length obtained by timing as the time length required by communication recovery; if the time length required by the communication recovery is within a preset time length range indicating that the communication performance is good, determining that the communication performance of the automatic driving system is good;
the bus interferometer is used for generating interference on the message receiving and sending functions of the automatic driving system when receiving the interference instruction; stopping the interference on the message receiving and sending functions of the automatic driving system when a stopping instruction is received;
the CAN transceiver is connected with the bus interferometer through a DB9 line and is used for receiving a message sent by the vehicle control unit and sending the message to the terminal through the bus interferometer; the vehicle control unit is used for bearing an automatic driving system.
5. The system of claim 4, wherein the terminal is further configured to determine that the autonomous driving system has poor communication performance if the duration required for communication recovery is not within a preset duration range indicating that communication performance is good.
6. The system of claim 4, wherein the terminal is specifically configured to:
receiving a message forwarded by a bus interferometer;
and if the message entity information is analyzed from the message, determining to receive the correct message sent by the automatic driving system.
7. A communication performance testing apparatus of an automatic driving system, characterized by comprising:
the sending module is used for sending an interference instruction to the bus interferometer so that the bus interferometer generates interference on the message receiving and sending function of the automatic driving system; after the specified time length is reached, sending a stopping instruction for stopping interference to the bus interferometer, and starting timing;
the timing module is used for stopping timing when receiving a correct message sent by the automatic driving system;
the determining module is used for determining the time length obtained by timing as the time length required by communication recovery; and if the time length required by the communication recovery is within a preset time length range representing good communication performance, determining that the communication performance of the automatic driving system is good.
8. The apparatus of claim 7, wherein the determining module is further configured to determine that the autonomous driving system communication performance is poor if the duration required for communication recovery is not within a preset duration range indicating that communication performance is good.
9. The apparatus of claim 7, wherein the determining module is specifically configured to:
receiving a message sent by an automatic driving system;
and if the message entity information is analyzed from the message, determining to receive the correct message sent by the automatic driving system.
10. A computer-readable medium having stored thereon computer-executable instructions for performing the method of any one of claims 1-3.
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