CN114167844A - Automobile remote diagnosis system and method - Google Patents

Automobile remote diagnosis system and method Download PDF

Info

Publication number
CN114167844A
CN114167844A CN202111563412.2A CN202111563412A CN114167844A CN 114167844 A CN114167844 A CN 114167844A CN 202111563412 A CN202111563412 A CN 202111563412A CN 114167844 A CN114167844 A CN 114167844A
Authority
CN
China
Prior art keywords
automobile
communication interface
bus
diagnostic
server
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202111563412.2A
Other languages
Chinese (zh)
Inventor
樊国锋
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Autel Intelligent Technology Corp Ltd
Original Assignee
Autel Intelligent Technology Corp Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Autel Intelligent Technology Corp Ltd filed Critical Autel Intelligent Technology Corp Ltd
Priority to CN202111563412.2A priority Critical patent/CN114167844A/en
Publication of CN114167844A publication Critical patent/CN114167844A/en
Pending legal-status Critical Current

Links

Images

Classifications

    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B23/00—Testing or monitoring of control systems or parts thereof
    • G05B23/02—Electric testing or monitoring
    • G05B23/0205—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults
    • G05B23/0259—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults characterized by the response to fault detection
    • G05B23/0262—Confirmation of fault detection, e.g. extra checks to confirm that a failure has indeed occurred
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B2219/00—Program-control systems
    • G05B2219/20—Pc systems
    • G05B2219/24—Pc safety
    • G05B2219/24065—Real time diagnostics

Landscapes

  • Small-Scale Networks (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)

Abstract

The embodiment of the application relates to the technical field of automobile diagnosis, and discloses an automobile remote diagnosis system and method, wherein first automobile communication interface equipment acquires first diagnosis data on an automobile bus, filters the first diagnosis data to obtain second diagnosis data, and sends the second diagnosis data to a server; the second automobile communication interface equipment acquires second diagnostic data from the server and sends the second diagnostic data to the diagnostic equipment; the diagnostic device receives the second diagnostic data to perform a diagnostic operation. In the scheme, remote diagnosis can be realized, and a larger range of fault solving ways are provided for the automobile. In addition, the first automobile communication interface equipment filters the first diagnosis data to obtain second diagnosis data, and the second diagnosis data after filtering processing is sent to the server and the diagnosis equipment, so that clutter data in remote diagnosis can be effectively reduced, the diagnosis efficiency and accuracy are improved, and meanwhile, the data analysis pressure of the first automobile communication interface equipment is relieved.

Description

Automobile remote diagnosis system and method
Technical Field
The embodiment of the application relates to the technical field of automobile diagnosis, in particular to an automobile remote diagnosis system and method.
Background
Automobiles are the most common transportation means, and play an important role in human life. Although automobiles have different qualities and various forms, various faults inevitably occur in the using process of the automobiles, and the automobiles need to be eliminated or repaired in time.
Along with the social development and the improvement of scientific technology, the design and production of automobiles increasingly adopt electronic control units, so that on one hand, the automation degree of the automobiles is higher and higher, the performance is more superior, the operation is more convenient and flexible, and on the other hand, higher requirements are provided for automobile maintenance. The traditional manual maintenance mode can not meet the maintenance requirement of the automobile. Therefore, at present, automobile maintenance factories at home and abroad need to be equipped with diagnostic instruments to detect the faults of automobile related systems.
However, as the industry develops more and more intelligent automobiles, more and more electronic control units are required, the technical level of maintenance personnel is required to be higher, the maintenance personnel in a single maintenance factory cannot meet various maintenance skill requirements, and the diagnostic equipment in each maintenance factory needs to be updated quickly and cost is high.
Disclosure of Invention
The technical problem mainly solved by the embodiment of the application is to provide a system and a method for remotely diagnosing an automobile, which can realize remote diagnosis, provide a larger-range fault solution for the automobile, effectively reduce clutter data in the remote diagnosis and improve the diagnosis efficiency and accuracy.
In order to solve the technical problem, in a first aspect, an embodiment of the present application provides an automobile remote diagnosis system, which includes a first automobile communication interface device, a second automobile communication interface device, and a diagnosis device, where the first automobile communication interface device is used to communicatively connect an automobile and a server, and the second automobile communication interface device is used to communicatively connect the server and the diagnosis device;
the first automobile communication interface equipment acquires first diagnostic data on the automobile bus, filters the first diagnostic data to obtain second diagnostic data, and sends the second diagnostic data to the server;
the second automobile communication interface equipment acquires the second diagnosis data from the server and sends the second diagnosis data to the diagnosis equipment;
the diagnostic device receives the second diagnostic data to perform diagnostic work.
In some embodiments, the diagnostic device and the vehicle establish a handshake connection through the first vehicle communication interface device, the server, and the second vehicle communication interface device, and each ECU in the vehicle sends its own bus ID to the diagnostic device during the handshake connection;
the diagnostic equipment sends a request message, and the request message is transmitted to the first automobile communication interface equipment through the second automobile communication interface equipment and the server, wherein the request message comprises the bus ID of at least one target ECU;
the first automobile communication interface device sends the request message to the automobile so that each target ECU in the automobile replies a response message to the automobile bus, wherein the response message comprises a bus ID of the corresponding target ECU, and the first diagnostic data comprises each response message;
the first automobile communication interface equipment downloads a first rule from the server, and filters first diagnostic data on the automobile bus according to the first rule to obtain second diagnostic data, wherein the first rule is used for filtering response messages with the bus ID on the automobile bus being consistent with the bus ID of each target ECU in the request message and taking the response messages as the second diagnostic data.
In some embodiments, the diagnostic device sends an initial request message, which is transmitted to the first automotive communication interface device via the second automotive communication interface device and the server, wherein the initial request message includes at least one ECU address;
the first automobile communication interface equipment sends the initial request message to the automobile so that the ECU corresponding to each ECU address in the automobile replies an initial response message to the automobile bus, wherein the initial response message comprises the bus ID of the corresponding ECU;
the first automobile communication interface equipment downloads a second rule from the server, filters message data on the automobile bus according to the second rule to obtain a handshake message, and sends the handshake message to the diagnosis equipment through the server and the second automobile communication interface equipment to establish handshake contact.
In some embodiments, the second rule is to filter out an initial response packet satisfying a preset structure as the handshake packet.
In some embodiments, the preset structuring comprises having an address, a response code, a message identification, a length, and a fixed byte.
In some embodiments, the bus ID is offset-adjusted in the request message, so that the bus ID in the response message is the offset-adjusted bus ID.
In some embodiments, the system further comprises a first mobile terminal for communicatively coupling the first automotive communication interface device and the server, and a second mobile terminal for communicatively coupling the second automotive communication interface device and the server;
the first mobile terminal and the second mobile terminal are both loaded with application software;
the application software acquires the help-seeking problem issued by the requester through the first mobile terminal, so that the service personnel can acquire the help-seeking problem through the second mobile terminal and solve the help-seeking problem.
In order to solve the above technical problem, in a second aspect, an embodiment of the present application provides a first vehicle communication interface device connected to a vehicle bus, and configured to obtain first diagnostic data on the vehicle bus, filter the first diagnostic data to obtain second diagnostic data, and send the second diagnostic data to a server;
the second automobile communication interface equipment acquires second diagnosis data from the server and sends the second diagnosis data to the diagnosis equipment;
the diagnostic device receives the second diagnostic data to perform diagnostic work.
In some embodiments, the first vehicle communication interface device obtaining first diagnostic data on the vehicle bus comprises:
the diagnostic equipment and the automobile establish a handshake connection through the first automobile communication interface equipment, the server and the second automobile communication interface equipment, and in the process of establishing the handshake connection, each ECU in the automobile sends a bus ID of the ECU to the diagnostic equipment;
the diagnostic equipment sends a request message, and the request message is transmitted to the first automobile communication interface equipment through the second automobile communication interface equipment and the server, wherein the request message comprises the bus ID of at least one target ECU;
the first automobile communication interface device sends the request message to the automobile so that each target ECU in the automobile replies a response message to the automobile bus, wherein the response message comprises a bus ID of the corresponding target ECU, and the first diagnostic data comprises the response message on the automobile bus;
the first vehicle communication interface device filters the first diagnostic data to obtain second diagnostic data, and the method comprises the following steps:
and the first automobile communication interface equipment downloads a first rule from the server and filters the first diagnostic data according to the first rule to obtain second diagnostic data, wherein the first rule is used for filtering out response messages with the bus IDs on the automobile bus consistent with the bus IDs of all target ECUs in the request messages to serve as the second diagnostic data.
In some embodiments, the diagnostic device and the vehicle establishing a handshaking connection through the first vehicle communication interface device, the server and the second vehicle communication interface device includes:
the diagnostic equipment sends an initial request message, and the initial request message is transmitted to the first automobile communication interface equipment through the second automobile communication interface equipment and the server, wherein the initial request message comprises at least one ECU address;
the first automobile communication interface equipment sends the initial request message to the automobile so that the ECU corresponding to each ECU address in the automobile replies an initial response message to the automobile bus, wherein the initial response message comprises the bus ID of the corresponding ECU;
the first automobile communication interface equipment downloads a second rule from the server, filters message data on the automobile bus according to the second rule to obtain a handshake message, and sends the handshake message to the diagnosis equipment through the server and the second automobile communication interface equipment to establish handshake contact.
The beneficial effects of the embodiment of the application are as follows: different from the situation in the prior art, the automobile remote diagnosis system provided by the embodiment of the application comprises a first automobile communication interface device, a second automobile communication interface device and a diagnosis device, wherein the first automobile communication interface device is used for being in communication connection with an automobile and a server, and the second automobile communication interface device is used for being in communication connection with the server and the diagnosis device. The method comprises the steps that first automobile communication interface equipment obtains first diagnosis data on an automobile bus, filters the first diagnosis data to obtain second diagnosis data, and sends the second diagnosis data to a server; the second automobile communication interface equipment acquires second diagnostic data from the server and sends the second diagnostic data to the diagnostic equipment; the diagnostic device receives the second diagnostic data to perform a diagnostic operation. In the scheme, the automobile and the diagnosis device are in communication connection through the first automobile communication interface device, the server and the second automobile communication interface device, so that remote diagnosis can be realized, and a wider fault solution way is provided for the automobile. In addition, the first automobile communication interface equipment filters the first diagnosis data to obtain second diagnosis data, and the second diagnosis data after filtering is sent to the server and the diagnosis equipment, so that clutter data in remote diagnosis can be effectively reduced, the diagnosis efficiency and accuracy are improved, and meanwhile, the data analysis pressure of the first automobile communication interface equipment is relieved.
Drawings
One or more embodiments are illustrated by way of example in the accompanying drawings, which correspond to the figures in which like reference numerals refer to similar elements and which are not to scale unless otherwise specified.
FIG. 1 is a schematic diagram of an automotive remote diagnostic system according to some embodiments of the present application;
FIG. 2 is a schematic diagram of an automotive remote diagnostic system according to further embodiments of the present application;
FIG. 3 is a schematic flow chart of a method for remote diagnosis of a vehicle according to some embodiments of the present application;
FIG. 4 is an interactive schematic diagram of a method for remote diagnosis of a vehicle according to some embodiments of the present application;
fig. 5 is an interaction diagram for establishing a handshake connection according to some embodiments of the present application.
Detailed Description
The present application will be described in detail with reference to specific examples. The following examples will assist those skilled in the art in further understanding the present application, but are not intended to limit the present application in any way. It should be noted that various changes and modifications can be made by one skilled in the art without departing from the spirit of the application. All falling within the scope of protection of the present application.
In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.
It should be noted that, if not conflicted, the various features of the embodiments of the present application may be combined with each other within the scope of protection of the present application. Additionally, while functional block divisions are performed in apparatus schematics, with logical sequences shown in flowcharts, in some cases, steps shown or described may be performed in sequences other than block divisions in apparatus or flowcharts. Further, the terms "first," "second," "third," and the like, as used herein, do not limit the data and the execution order, but merely distinguish the same items or similar items having substantially the same functions and actions.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the present application. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
In addition, the technical features mentioned in the embodiments of the present application described below may be combined with each other as long as they do not conflict with each other.
Referring to fig. 1, fig. 1 is a schematic structural diagram of an automobile remote diagnosis system 100 according to some embodiments of the present application, where the system 100 includes a first automobile communication interface device 10, a second automobile communication interface device 20, and a diagnosis device 30, where the first automobile communication interface device 10 is used to communicatively connect an automobile 50 and a server 40, and the second automobile communication interface device 20 is used to communicatively connect the server 40 and the diagnosis device 30.
Specifically, a first Vehicle Communication Interface (VCI) device 10 is a first VCI box. The first automobile communication interface device 10 may be provided at the periphery of the steering wheel of the automobile 50. The first automotive communication interface device 10 is connected to an OBD connector of the automobile 50.
The communication connection between the first vehicle communication interface device 10 and the server 40 may be a direct communication connection, for example, through a 4G wireless communication, a 5G wireless communication, or a WIFI wireless communication connection, etc., it being understood that the communication connection between the first vehicle communication interface device 10 and the server 40 may also be an indirect communication connection, for example, the first vehicle communication interface device 10 is in communication connection with a mobile terminal, which is in turn in wireless communication connection with the server 40, such that the first vehicle communication interface device 10 is in communication connection with the server 40.
The server 40 may be a local physical server, or may be a cloud device, for example: a cloud server, a cloud host, a cloud service platform, a cloud computing platform, etc., the cloud device is communicatively connected with the first vehicle communication interface device 10 or the second vehicle communication interface device 20 through a network, and the two are communicatively connected through a predetermined communication protocol, which may be TCP/IP, NETBEUI, IPX/SPX, etc. in some embodiments.
Similarly, a second Vehicle Communication Interface (VCI) 20, i.e., a VCI box, may be disposed around the diagnostic device 30. The second automotive communication interface device 20 is connected to the OBD connector of the diagnostic device 30.
The communication connection between the second vehicle communication interface device 20 and the server 40 may be a direct communication connection, for example, through 4G wireless communication, 5G wireless communication, or WIFI wireless communication, etc., it is understood that the communication connection between the second vehicle communication interface device 20 and the server 40 may also be an indirect communication connection, for example, the second vehicle communication interface device 20 is in communication connection with a mobile terminal, which is in turn in wireless communication connection with the server 40, such that the second vehicle communication interface device 20 is in communication connection with the server 40.
The diagnostic device 30 is a portable intelligent vehicle failure self-checking instrument for detecting vehicle failures, and a user can use the diagnostic device to quickly read failures in a vehicle electric control system, display failure information through a liquid crystal display screen, and quickly find out the positions and reasons of the failures. It is understood that the diagnostic device 30 may be a commercially available automotive diagnostic apparatus, and the structure and operation of the diagnostic device 30 are well known to those skilled in the art and will not be described in detail herein.
Through the above manner, a communication network from the automobile to the first automobile communication interface device 10, the server 40, the second automobile communication interface device 20 and the diagnosis device 30 is formed, in which any two bodies can communicate with each other, so that the diagnosis device 30 is not limited by the geographical position, that is, is not limited to the periphery of the automobile, thereby realizing remote diagnosis and providing a wider fault solution path for the automobile. For example, when the service personnel in the automobile service factory cannot solve the fault, the service personnel can remotely seek help to find more experienced professionals, and the automobile 50 and the diagnostic equipment 30 are communicatively connected through the communication network to solve the fault. As another example, when the diagnostic device 30 of a car repair shop does not match the model of the malfunctioning car, the malfunction can be resolved by remotely communicating with the matching diagnostic device 30.
Specifically, the first automobile communication interface device 10 obtains first diagnostic data on a bus of the automobile 50, performs filtering processing on the first diagnostic data to obtain second diagnostic data, and sends the second diagnostic data to the server 40; the second automotive communication interface device 20 acquires the second diagnostic data from the server 40 and transmits the second diagnostic data to the diagnostic device 30; the diagnostic device 30 receives the second diagnostic data to perform diagnostic work.
It can be understood that the first diagnostic data on the bus of the vehicle 50 includes messages sent by the ECUs in the vehicle 50 and a large amount of interference noise, the first vehicle communication interface device 10 filters the first diagnostic data to obtain the second diagnostic data, and sends the filtered second diagnostic data to the server 40 and the diagnostic device 30, so that the noise data in remote diagnosis and the ECU messages unnecessary for the diagnostic device 30 can be effectively reduced, and the efficiency and accuracy of diagnosis can be improved. In addition, the first automobile communication interface device 10 only needs to analyze the filtered second diagnostic data, the data size is relatively small, the data analysis pressure of the first automobile communication interface device 10 is also relieved, the hardware configuration requirement on the first automobile communication interface device 10 can be reduced, and the cost is reduced.
In some embodiments, the diagnostic device and the vehicle establish a handshaking connection through the first vehicle communication interface device, the server, and the second vehicle communication interface device. It is understood that the handshake connection is a first communication connection between the diagnostic device and the vehicle after the communication network has been established and before the transmission of information begins, for mutually agreeing on the state of the communication modes.
In the process of establishing the handshake connection, each ECU in the automobile sends its own bus ID to the diagnostic device. It will be appreciated that each ECU transmits a message to the vehicle bus which is connected to the first vehicle communications interface device, such that each ECU has its own bus ID representing the identity of the data transmitted on the bus by the ECU. Each ECU in the automobile sends its own bus ID to the diagnostic device, which is equivalent to informing the diagnostic device that each ECU in the automobile sends its own bus ID, and the specific sending form can be determined according to the communication protocol.
After the handshake contact is established, the diagnostic device sends a request message, and the request message is transmitted to the first automobile communication interface device through the second automobile communication interface device and the server, wherein the request message includes the bus ID of at least one target ECU. It is understood that the target ECU, i.e., the ECU that the diagnostic device wants to receive the corresponding message, may be any one of the ECUs on the vehicle bus.
And then, the first automobile communication interface equipment sends the request message to the automobile, namely, the automobile bus receives the request message, and each ECU on the automobile bus can make corresponding feedback according to the request message. Namely, the target ECU replies a response message to the automobile bus, wherein the response message comprises the bus ID of the corresponding target ECU. For example, if there are 3 target ECUs replying response messages to the vehicle bus, the 1 st response message includes the bus ID of the 1 st target ECU, the 2 nd response message includes the bus ID of the 2 nd target ECU, and the 3 rd response message includes the bus ID of the 3 rd target ECU.
It is understood that, besides the response message sent by each target ECU on the vehicle bus, other ECUs may also send response messages due to interference, and some interference clutter may also exist on the vehicle bus. Therefore, the first diagnostic data includes response messages transmitted by the respective target ECUs, response messages transmitted by other non-target ECUs, interference clutter data, and the like. The first automobile communication interface equipment downloads the first rule from the server and filters the first diagnostic data according to the first rule to obtain second diagnostic data, so that the response message (the second diagnostic data) received by the diagnostic equipment is a message required by the diagnostic equipment, and the method is more accurate and is free of interference.
In some embodiments, the first rule is to filter out a response message on the vehicle bus having a bus ID that is consistent with the bus ID of each target ECU in the request message as the second diagnostic data. By adopting the first rule based on bus ID matching to filter the response message on the automobile bus, the filtering and screening are more accurate and effective.
In some embodiments, the following may be performed when the vehicle and the diagnostic device establish a handshake contact. Specifically, the diagnostic device sends an initial request message, and the initial request message is transmitted to the first automobile communication interface device through the second automobile communication interface device and the server, wherein the initial request message comprises at least one ECU address. It is understood that the ECU address is the identification number of the ECU.
Then, the first automobile communication interface device sends the initial request message to the automobile, so that the ECU corresponding to each EUC address in the automobile can reply the initial response message to the automobile bus. The initial response message includes the bus ID of the corresponding ECU. It can be understood that, in addition to the initial response messages sent by the ECUs corresponding to the EUC addresses on the vehicle bus, some interference clutter may also exist on the vehicle bus, or the initial response messages sent by some ECUs are incomplete, have a deficiency, and the like. Therefore, the first automobile communication interface equipment downloads the second rule from the server, filters message data on the automobile bus according to the second rule to obtain a handshake message, and sends the handshake message to the diagnostic equipment through the server and the second automobile communication interface equipment to establish handshake contact. By the method, a large amount of clutter data which do not meet the requirements on the automobile bus are filtered, so that the initial response message received by the diagnosis equipment is complete and effective.
In this embodiment, the second rule is adopted to filter out clutter data in the initial response message in the process of establishing the handshake contact, so that the efficiency and accuracy of establishing the handshake contact can be improved, in addition, the first automobile communication interface device only needs to analyze the handshake message (the filtered initial response message), the data volume is relatively small, the data analysis pressure of the first automobile communication interface device is also reduced, the hardware configuration requirement on the first automobile communication interface device can be reduced, and the cost is reduced.
In some implementations, the second rule is to filter out initial response messages that satisfy a preset structuring as the handshake messages. In the embodiment, the initial response messages are screened in a preset structured mode, so that complete and effective initial response messages which accord with the communication protocol can be simply and effectively filtered.
In some embodiments, the preset structuring includes having an address, a response code, a message identification, a length, and a fixed byte. That is, if an initial response message includes an address, a response code, a message identifier, a length, and a fixed byte, it indicates that the initial response message is a complete and effective initial response message that needs to be transmitted. For example, for the initial response packet a being "02000707C 00010000301", two bytes 1-2 "0200" are fixed bytes; the 3 rd byte "07" represents the length, indicating that 7 bytes of data follow, and the total length of the message is 10 bytes; the 4 th byte "07" is the address of the corresponding ECU; the 5 th byte "C0" represents a request handshake message, i.e., a message identification; the 6 th byte to the 9 th byte are data in the initial response message A; the 10 th byte is fixed to any of the four values "01, 10, 20, 21". The above structure based on the initial response packet a satisfies the preset structurization, and thus, the initial response packet a is a handshake packet.
In some embodiments, when the vehicle and the diagnostic device establish a handshake connection, the initial request message includes a fixed byte, a length, an ECU address, a message identification, and a bus ID of a subsequent initial request message. It will be appreciated that the bus ID of the subsequent initial request message corresponds to the bus ID of the next initial request message. After each ECU receives the initial request message, the ECU replies an initial response message, wherein the initial response message comprises an address, a response code, a message identifier, a length and a bus ID of a subsequent initial response message. It will be appreciated that the bus ID of the subsequent initial response message corresponds to the bus ID of the next initial response message.
For example, for the initial request message "02000305C 0 a 0" and the initial response message "02050300D 0 a 5", the last 1 byte "a 0" in the initial request message is the bus ID of the request message of the subsequent data transmission, and the last 1 byte "a 5" in the initial response message is the bus ID of the response message of the subsequent data transmission.
In some embodiments, the bus ID is offset adjusted in the request message when the vehicle and the diagnostic device perform data transmission, so that the bus ID in the response message is the offset-adjusted bus ID. For example, when a handshake contact is established between an automobile and a diagnostic device, a bus ID of an ECU is "0 x 100", and when data transmission is performed after the handshake contact is established, a request message sent by the diagnostic device carries the bus ID 'of the ECU, where the bus ID' is the bus ID after offset adjustment. The bus ID' is the original bus ID "0 x 100" plus an offset value, wherein the offset value may be one of 0x700, 0x300, 0x400, or 0x 600. For example, the offset-adjusted bus ID' is 0x100 plus 0x 300.
The first automobile communication interface sends the request message to an automobile after receiving the request message, the ECU in the automobile replies a response message after receiving the request command, the response message is transmitted to the diagnostic equipment through the automobile bus, the first automobile communication interface, the server and the second automobile communication interface, and the bus ID in the response message is the bus ID after the offset adjustment. Continuing with the above example, the bus ID in the response message is the bus ID', i.e. 0x100 plus 0x 300.
In this embodiment, by setting the bus ID offset so that the bus IDs are relative addresses, memory space can be recycled.
In some embodiments, referring to fig. 2, the remote automobile diagnosis system 100 further includes a first mobile terminal 60 and a second mobile terminal 70, wherein the first mobile terminal 60 is used for connecting the first automobile communication interface device 10 and the server 40 in a communication manner, and the second mobile terminal 70 is used for connecting the second automobile communication interface device 20 and the server 40 in a communication manner.
The first Mobile terminal 60 and the second Mobile terminal 70 may be various handheld devices with wireless communication functions, vehicle-mounted devices, wearable devices, computing devices or other processing devices connected to wireless modems, as well as various forms of User Equipment (UE), Mobile Stations (MS), terminal devices (terminal device), and the like, for example, a smart phone, a tablet computer, a smart watch, a PDA (Personal Digital Assistant), and the like.
The first mobile terminal 60 and the second mobile terminal 70 are both loaded with application software, and it can be understood that the application software is used as a platform for remote communication, and a requester at the first mobile terminal 60 side can issue a help-seeking question on the application software, so that the application software obtains the help-seeking question issued by the requester through the first mobile terminal 60. The service person may obtain the help-seeking problem on the application software in the second mobile terminal 70, and thus, may help the requester solve the help-seeking problem.
For example, the first mobile terminal 60 and the car are operated by a maintenance man at a car maintenance factory, and the second mobile terminal 70 and the diagnostic equipment are operated by an expert at another car maintenance factory or other places, so that when the maintenance man encounters an unsolvable fault problem, remote help seeking can be initiated on the application software of the first mobile terminal 60, the expert capable of providing service can be quickly found through an order matching system in the application software, the car problem can be quickly located and solved through the remote expert, and the maintenance efficiency is greatly improved.
In this embodiment, the first mobile terminal 60 is communicatively connected to the first vehicle communication interface device 10 and the server 40, and the second mobile terminal 70 is communicatively connected to the second vehicle communication interface device 20 and the server 40, so that the vehicle remote diagnosis system 100 has richer interactive functions and provides a service channel for users.
In summary, the automobile remote diagnosis system in some embodiments of the present application includes a first automobile communication interface device, a second automobile communication interface device, and a diagnosis device, where the first automobile communication interface device is used to communicatively connect an automobile and a server, and the second automobile communication interface device is used to communicatively connect the server and the diagnosis device. The method comprises the steps that first automobile communication interface equipment obtains first diagnosis data on an automobile bus, filters the first diagnosis data to obtain second diagnosis data, and sends the second diagnosis data to a server; the second automobile communication interface equipment acquires second diagnostic data from the server and sends the second diagnostic data to the diagnostic equipment; the diagnostic device receives the second diagnostic data to perform a diagnostic operation. In the scheme, the automobile and the diagnosis device are in communication connection through the first automobile communication interface device, the server and the second automobile communication interface device, so that remote diagnosis can be realized, and a wider fault solution way is provided for the automobile. In addition, the first automobile communication interface equipment filters the first diagnosis data to obtain second diagnosis data, and the second diagnosis data after filtering is sent to the server and the diagnosis equipment, so that clutter data in remote diagnosis can be effectively reduced, the diagnosis efficiency and accuracy are improved, and meanwhile, the data analysis pressure of the first automobile communication interface equipment is relieved.
Some embodiments of the present application further provide a method for remote diagnosis of an automobile, referring to fig. 3, the method S20 includes, but is not limited to, the following steps:
s21: the first automobile communication interface equipment is connected with the automobile bus, acquires first diagnostic data on the automobile bus, filters the first diagnostic data to acquire second diagnostic data, and sends the second diagnostic data to the server.
S22: the second vehicle communication interface device acquires the second diagnostic data from the server and sends the second diagnostic data to the diagnostic device.
S23: the diagnostic device receives the second diagnostic data to perform a diagnostic operation.
A first Vehicle Communication Interface (VCI) device, i.e. a first VCI box. The first vehicle communication interface device may be provided at the periphery of a steering wheel of the vehicle. The first automotive communication interface device is connected to an OBD connector of the automobile. The first automobile communication interface device is in wireless communication connection with the server.
A second Vehicle Communication Interface (VCI) device, i.e., a VCI box, may be disposed around the diagnostic device. The second automotive communication interface device is connected to the OBD connector of the diagnostic device. The second vehicle communication interface device is in wireless communication connection with the server.
Through the mode, a communication network from the automobile to the first automobile communication interface device, the server, the second automobile communication interface device and the diagnosis device is formed, any two main bodies in the communication network can be communicated with each other, so that the diagnosis device is not limited by the geographical position, namely, the diagnosis device is not limited to the periphery of the automobile, and therefore, remote diagnosis can be achieved, and a larger-range fault solution way is provided for the automobile.
Based on the hardware structure of the system, the first automobile communication interface equipment acquires first diagnostic data on an automobile bus, filters the first diagnostic data to obtain second diagnostic data, and sends the second diagnostic data to the server; the second automobile communication interface equipment acquires second diagnostic data from the server and sends the second diagnostic data to the diagnostic equipment; the diagnostic device receives the second diagnostic data to perform a diagnostic operation.
The first diagnosis data on the automobile bus comprises messages sent by all ECUs in an automobile and a large amount of interference clutter, the first automobile communication interface equipment filters the first diagnosis data to obtain second diagnosis data, and the second diagnosis data after filtering is sent to the server and the diagnosis equipment, so that clutter data in remote diagnosis and ECU messages not needed by the diagnosis equipment can be effectively reduced, and the diagnosis efficiency and accuracy are improved. In addition, the first automobile communication interface equipment only needs to analyze the filtered second diagnostic data, the data volume is relatively small, the data analysis pressure of the first automobile communication interface equipment is relieved, the hardware configuration requirement on the first automobile communication interface equipment can be reduced, and the cost is reduced.
In some embodiments, referring to fig. 4, the aforementioned "acquiring first diagnostic data on the vehicle bus by the first vehicle communication interface device" includes:
a) the diagnostic equipment and the automobile establish handshake contact through the first automobile communication interface equipment, the server and the second automobile communication interface equipment, and in the process of establishing handshake contact, each ECU in the automobile sends the bus ID of each ECU to the diagnostic equipment.
b) The diagnostic equipment sends a request message, and the request message is transmitted to the first automobile communication interface equipment through the second automobile communication interface equipment and the server, wherein the request message comprises at least one bus ID of the target ECU;
c) the first automobile communication interface device sends the request message to the automobile so that each target ECU in the automobile replies a response message to the automobile bus, the response message comprises a bus ID of the corresponding target ECU, and the first diagnostic data comprises the response message on the automobile bus.
It is understood that the handshake connection is a first communication connection between the diagnostic device and the vehicle after the communication network has been established and before the transmission of information begins, for mutually agreeing on the state of the communication modes.
In the process of establishing the handshake connection, each ECU in the automobile sends its own bus ID to the diagnostic device. It will be appreciated that each ECU transmits a message to the vehicle bus which is connected to the first vehicle communications interface device, such that each ECU has its own bus ID representing the identity of the data transmitted on the bus by the ECU. Each ECU in the automobile sends its own bus ID to the diagnostic device, which is equivalent to informing the diagnostic device that each ECU in the automobile sends its own bus ID, and the specific sending form can be determined according to the communication protocol.
After the handshake contact is established, the diagnostic device sends a request message, and the request message is transmitted to the first automobile communication interface device through the second automobile communication interface device and the server, wherein the request message includes the bus ID of at least one target ECU. It is understood that the target ECU, i.e., the ECU that the diagnostic device wants to receive the corresponding message, may be any one of the ECUs on the vehicle bus.
And then, the first automobile communication interface equipment sends the request message to the automobile, namely, the automobile bus receives the request message, and each ECU on the automobile bus can make corresponding feedback according to the request message. Namely, the target ECU replies a response message to the automobile bus, wherein the response message comprises the bus ID of the corresponding target ECU. For example, if there are 3 target ECUs replying response messages to the vehicle bus, the 1 st response message includes the bus ID of the 1 st target ECU, the 2 nd response message includes the bus ID of the 2 nd target ECU, and the 3 rd response message includes the bus ID of the 3 rd target ECU.
It is understood that, besides the response message sent by each target ECU on the vehicle bus, other ECUs may also send response messages due to interference, and some interference clutter may also exist on the vehicle bus. Therefore, the first diagnostic data includes response messages transmitted by the respective target ECUs, response messages transmitted by other non-target ECUs, interference clutter data, and the like.
In some embodiments, with continuing reference to fig. 4, the aforementioned "filtering the first diagnostic data by the first vehicle communication interface device to obtain the second diagnostic data" includes:
d) the first automobile communication interface equipment downloads a first rule from the server and filters the first diagnostic data according to the first rule to obtain second diagnostic data, wherein the first rule is used for filtering response messages with the bus IDs on the automobile bus consistent with the bus IDs of the target ECUs in the request messages to serve as the second diagnostic data.
Specifically, the first automobile communication interface device downloads a first rule from the server, and filters the first diagnostic data according to the first rule to obtain second diagnostic data, so that a response message (namely, the second diagnostic data) received by the diagnostic device is a message required by the diagnostic device, and the response message is more accurate and is free of interference.
By adopting the first rule based on bus ID matching to filter the response message on the automobile bus, the filtering and screening are more accurate and effective.
In some embodiments, as shown in fig. 5, the aforementioned "the diagnostic device and the vehicle establish a handshake connection through the first vehicle communication interface device, the server, and the second vehicle communication interface device" includes:
e) the diagnostic equipment sends an initial request message, and the initial request message is transmitted to the first automobile communication interface equipment through the second automobile communication interface equipment and the server, wherein the initial request message comprises at least one ECU address.
It is understood that the ECU address is the identification number of the ECU.
f) The first automobile communication interface equipment sends the initial request message to the automobile so that the ECU corresponding to each ECU address in the automobile replies an initial response message to the automobile bus, wherein the initial response message comprises the bus ID of the corresponding ECU.
It can be understood that, in addition to the initial response messages sent by the ECUs corresponding to the EUC addresses on the vehicle bus, some interference clutter may also exist on the vehicle bus, or the initial response messages sent by some ECUs are incomplete, have a deficiency, and the like.
g) The first automobile communication interface equipment downloads the second rule from the server, filters message data on the automobile bus according to the second rule to obtain a handshake message, and sends the handshake message to the diagnostic equipment through the server and the second automobile communication interface equipment to establish handshake contact.
In some implementations, the second rule is to filter out initial response messages that satisfy a preset structuring as the handshake messages. In the embodiment, the initial response messages are screened in a preset structured mode, so that complete and effective initial response messages which accord with the communication protocol can be simply and effectively filtered.
In some embodiments, the preset structuring includes having an address, a response code, a message identification, a length, and a fixed byte. That is, if an initial response message includes an address, a response code, a message identifier, a length, and a fixed byte, it indicates that the initial response message is a complete and effective initial response message that needs to be transmitted. For example, for the initial response packet a being "02000707C 00010000301", two bytes 1-2 "0200" are fixed bytes; the 3 rd byte "07" represents the length, indicating that 7 bytes of data follow, and the total length of the message is 10 bytes; the 4 th byte "07" is the address of the corresponding ECU; the 5 th byte "C0" represents a request handshake message, i.e., a message identification; the 6 th byte to the 9 th byte are data in the initial response message A, namely response codes; the 10 th byte is fixed to any of the four values "01, 10, 20, 21". The above structure based on the initial response packet a satisfies the preset structurization, and thus, the initial response packet a is a handshake packet.
In this embodiment, the second rule is adopted to filter out clutter data in the initial response message in the process of establishing the handshake contact, so that the efficiency and accuracy of establishing the handshake contact can be improved, in addition, the first automobile communication interface device only needs to analyze the handshake message (the filtered initial response message), the data volume is relatively small, the data analysis pressure of the first automobile communication interface device is also reduced, the hardware configuration requirement on the first automobile communication interface device can be reduced, and the cost is reduced.
In some embodiments, the bus ID is offset adjusted in the request message, so that the bus ID in the response message is the offset-adjusted bus ID. For example, when a handshake contact is established between an automobile and a diagnostic device, a bus ID of an ECU is "0 x 100", and when data transmission is performed after the handshake contact is established, a request message sent by the diagnostic device carries the bus ID 'of the ECU, where the bus ID' is the bus ID after offset adjustment. The bus ID' is the original bus ID "0 x 100" plus an offset value, wherein the offset value may be one of 0x700, 0x300, 0x400, or 0x 600. For example, the offset-adjusted bus ID' is 0x100 plus 0x 300.
The first automobile communication interface sends the request message to an automobile after receiving the request message, the ECU in the automobile replies a response message after receiving the request command, the response message is transmitted to the diagnostic equipment through the automobile bus, the first automobile communication interface, the server and the second automobile communication interface, and the bus ID in the response message is the bus ID after the offset adjustment. Continuing with the above example, the bus ID in the response message is the bus ID', i.e. 0x100 plus 0x 300.
In this embodiment, by setting the bus ID offset so that the bus IDs are relative addresses, memory space can be recycled.
In summary, in the automobile remote diagnosis method in some embodiments of the present application, first diagnostic data on an automobile bus is obtained through a first automobile communication interface device, the first diagnostic data is filtered to obtain second diagnostic data, and the second diagnostic data is sent to a server; the second automobile communication interface equipment acquires second diagnostic data from the server and sends the second diagnostic data to the diagnostic equipment; the diagnostic device receives the second diagnostic data to perform a diagnostic operation. In the scheme, the automobile and the diagnosis device are in communication connection through the first automobile communication interface device, the server and the second automobile communication interface device, so that remote diagnosis can be realized, and a wider fault solution way is provided for the automobile. In addition, the first automobile communication interface equipment filters the first diagnosis data to obtain second diagnosis data, and the second diagnosis data after filtering is sent to the server and the diagnosis equipment, so that clutter data in remote diagnosis can be effectively reduced, the diagnosis efficiency and accuracy are improved, and meanwhile, the data analysis pressure of the first automobile communication interface equipment is relieved.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit the same; within the context of the present application, where technical features in the above embodiments or in different embodiments can also be combined, the steps can be implemented in any order and there are many other variations of the different aspects of the present application as described above, which are not provided in detail for the sake of brevity; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present application.

Claims (10)

1. An automobile remote diagnosis system is characterized by comprising a first automobile communication interface device, a second automobile communication interface device and a diagnosis device, wherein the first automobile communication interface device is used for being in communication connection with an automobile and a server, and the second automobile communication interface device is used for being in communication connection with the server and the diagnosis device;
the first automobile communication interface equipment acquires first diagnostic data on the automobile bus, filters the first diagnostic data to obtain second diagnostic data, and sends the second diagnostic data to the server;
the second automobile communication interface equipment acquires the second diagnosis data from the server and sends the second diagnosis data to the diagnosis equipment;
the diagnostic device receives the second diagnostic data to perform diagnostic work.
2. The system of claim 1,
the diagnostic equipment and the automobile establish a handshake connection through the first automobile communication interface equipment, the server and the second automobile communication interface equipment, and in the process of establishing the handshake connection, each ECU in the automobile sends a bus ID of the ECU to the diagnostic equipment;
the diagnostic equipment sends a request message, and the request message is transmitted to the first automobile communication interface equipment through the second automobile communication interface equipment and the server, wherein the request message comprises the bus ID of at least one target ECU;
the first automobile communication interface device sends the request message to the automobile so that each target ECU in the automobile replies a response message to the automobile bus, wherein the response message comprises a bus ID of the corresponding target ECU, and the first diagnostic data comprises each response message;
the first automobile communication interface equipment downloads a first rule from the server, and filters first diagnostic data on the automobile bus according to the first rule to obtain second diagnostic data, wherein the first rule is used for filtering response messages with the bus ID on the automobile bus being consistent with the bus ID of each target ECU in the request message and taking the response messages as the second diagnostic data.
3. The system of claim 2, wherein the diagnostic device sends an initial request message, the initial request message being transmitted to the first vehicle communication interface device via the second vehicle communication interface device and the server, wherein the initial request message includes at least one ECU address;
the first automobile communication interface equipment sends the initial request message to the automobile so that the ECU corresponding to each ECU address in the automobile replies an initial response message to the automobile bus, wherein the initial response message comprises the bus ID of the corresponding ECU;
the first automobile communication interface equipment downloads a second rule from the server, filters message data on the automobile bus according to the second rule to obtain a handshake message, and sends the handshake message to the diagnosis equipment through the server and the second automobile communication interface equipment to establish handshake contact.
4. The method of claim 3, wherein the second rule is to filter out initial response messages satisfying a predetermined structure as the handshake messages.
5. The method of claim 4, wherein the predetermined structure comprises a fixed byte having an address, a response code, a message identification, and a length.
6. The system according to any one of claims 2 to 5,
and the bus ID carries out offset adjustment in the request message so as to enable the bus ID in the response message to be the bus ID after the offset adjustment.
7. The system of any one of claims 1-6, further comprising a first mobile terminal for communicatively coupling the first automotive communication interface device and the server, and a second mobile terminal for communicatively coupling the second automotive communication interface device and the server;
the first mobile terminal and the second mobile terminal are both loaded with application software;
the application software acquires the help-seeking problem issued by the requester through the first mobile terminal, so that the service personnel can acquire the help-seeking problem through the second mobile terminal and solve the help-seeking problem.
8. An automobile remote diagnosis method is characterized by comprising the following steps:
the method comprises the steps that a first automobile communication interface device is connected with an automobile bus, first diagnosis data on the automobile bus are obtained, the first diagnosis data are filtered to obtain second diagnosis data, and the second diagnosis data are sent to a server;
the second automobile communication interface equipment acquires second diagnosis data from the server and sends the second diagnosis data to the diagnosis equipment;
the diagnostic device receives the second diagnostic data to perform diagnostic work.
9. The method of claim 8,
the first vehicle communication interface device obtaining first diagnostic data on the vehicle bus, including:
the diagnostic equipment and the automobile establish a handshake connection through the first automobile communication interface equipment, the server and the second automobile communication interface equipment, and in the process of establishing the handshake connection, each ECU in the automobile sends a bus ID of the ECU to the diagnostic equipment;
the diagnostic equipment sends a request message, and the request message is transmitted to the first automobile communication interface equipment through the second automobile communication interface equipment and the server, wherein the request message comprises the bus ID of at least one target ECU;
the first automobile communication interface device sends the request message to the automobile so that each target ECU in the automobile replies a response message to the automobile bus, wherein the response message comprises a bus ID of the corresponding target ECU, and the first diagnostic data comprises the response message on the automobile bus;
the first vehicle communication interface device filters the first diagnostic data to obtain second diagnostic data, and the method comprises the following steps:
and the first automobile communication interface equipment downloads a first rule from the server and filters the first diagnostic data according to the first rule to obtain second diagnostic data, wherein the first rule is used for filtering out response messages with the bus IDs on the automobile bus consistent with the bus IDs of all target ECUs in the request messages to serve as the second diagnostic data.
10. The method of claim 9, wherein establishing a handshaking relationship between the diagnostic device and the vehicle via the first vehicle communication interface device, the server, and the second vehicle communication interface device comprises:
the diagnostic equipment sends an initial request message, and the initial request message is transmitted to the first automobile communication interface equipment through the second automobile communication interface equipment and the server, wherein the initial request message comprises at least one ECU address;
the first automobile communication interface equipment sends the initial request message to the automobile so that the ECU corresponding to each ECU address in the automobile replies an initial response message to the automobile bus, wherein the initial response message comprises the bus ID of the corresponding ECU;
the first automobile communication interface equipment downloads a second rule from the server, filters message data on the automobile bus according to the second rule to obtain a handshake message, and sends the handshake message to the diagnosis equipment through the server and the second automobile communication interface equipment to establish handshake contact.
CN202111563412.2A 2021-12-20 2021-12-20 Automobile remote diagnosis system and method Pending CN114167844A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202111563412.2A CN114167844A (en) 2021-12-20 2021-12-20 Automobile remote diagnosis system and method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202111563412.2A CN114167844A (en) 2021-12-20 2021-12-20 Automobile remote diagnosis system and method

Publications (1)

Publication Number Publication Date
CN114167844A true CN114167844A (en) 2022-03-11

Family

ID=80487538

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202111563412.2A Pending CN114167844A (en) 2021-12-20 2021-12-20 Automobile remote diagnosis system and method

Country Status (1)

Country Link
CN (1) CN114167844A (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102183945A (en) * 2011-01-17 2011-09-14 武汉理工大学 Multifunctional remote fault diagnosis system for electric control automobile
CN209689925U (en) * 2018-12-11 2019-11-26 苏州汇川联合动力系统有限公司 Remote assistance diagnostic system, communication switching card and electric car
WO2021042241A1 (en) * 2019-09-02 2021-03-11 深圳市元征科技股份有限公司 Vehicle remote diagnosis method and related apparatus

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102183945A (en) * 2011-01-17 2011-09-14 武汉理工大学 Multifunctional remote fault diagnosis system for electric control automobile
CN209689925U (en) * 2018-12-11 2019-11-26 苏州汇川联合动力系统有限公司 Remote assistance diagnostic system, communication switching card and electric car
WO2021042241A1 (en) * 2019-09-02 2021-03-11 深圳市元征科技股份有限公司 Vehicle remote diagnosis method and related apparatus

Similar Documents

Publication Publication Date Title
US10146521B2 (en) Device, system and method for updating the software modules of a vehicle
US9275503B2 (en) Method and apparatus for remotely communicating vehicle information to the cloud
CN112286170B (en) Vehicle ECU (electronic control Unit) flashing method, device and equipment and storage medium
US20160148441A1 (en) Vehicle detecting method, mobile terminal, and vehicular terminal
US20140011483A1 (en) Vehicle bus access point system and method
KR101275287B1 (en) Remote monitoring system for vehicles
CN103095799A (en) On-board diagnostic data communication system
CN111586145A (en) Vehicle diagnosis method and system, electronic equipment and storage medium
CN111506047B (en) Vehicle diagnosis method, device and storage medium
CN113359674A (en) Vehicle diagnostic system, method, electronic device, and storage medium
CN106375943A (en) Vehicle-mounted fault diagnosis system and method
CN103944948A (en) Method for configuring vehicle-mounted network, and intelligent vehicle-mounted terminal
CN105389568A (en) Method, device and system for acquiring location of vehicle
CN108173925B (en) Internet of vehicles multi-gateway control system and method
CN110895610A (en) Method, computer program and apparatus for a network component and for a terminal device
CN105824653A (en) Automobile CAN bus data brush-writing method and device
CN109597634A (en) The method, apparatus and vehicle of more new vehicle ECU
CN105573299A (en) Intelligent on-vehicle diagnosis system capable of supporting LTE communication and method thereof
CN111061237B (en) Vehicle identification code flashing method and vehicle identification code flashing system
CN114167844A (en) Automobile remote diagnosis system and method
CN105334768A (en) Method for obtaining baud rate and device
CN110736611A (en) vehicle lamp zero point calibration method and device
CN114327528A (en) Programming method, replacing method and device of tire pressure sensing device
US20200304336A1 (en) Device and method for filtering safety-relevant interventions, as well as gateway control unit
CN107991925A (en) Vehicle mounted failure communication device based on Bluetooth transmission

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination