CN111464651A - Vehicle diagnosis system and method - Google Patents
Vehicle diagnosis system and method Download PDFInfo
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- CN111464651A CN111464651A CN202010264576.4A CN202010264576A CN111464651A CN 111464651 A CN111464651 A CN 111464651A CN 202010264576 A CN202010264576 A CN 202010264576A CN 111464651 A CN111464651 A CN 111464651A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/12—Protocols specially adapted for proprietary or special-purpose networking environments, e.g. medical networks, sensor networks, networks in vehicles or remote metering networks
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/50—Network services
- H04L67/51—Discovery or management thereof, e.g. service location protocol [SLP] or web services
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L69/00—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
- H04L69/08—Protocols for interworking; Protocol conversion
Abstract
The invention relates to a vehicle diagnosis system and a method, which are characterized in that diagnosis data are obtained from a vehicle by utilizing various manufacturers or branded vehicle diagnosis protocols according to a first communication protocol formed by dividing different diagnosis services and are sent to a mobile terminal, target diagnosis data are converted into data in a network protocol format used by a server by utilizing various network protocols according to a second communication protocol formed by dividing different diagnosis services and are sent to the server, and the server compares the data in the network protocol format with corresponding diagnosis standard data in a database to obtain a diagnosis result and sends the diagnosis result to the mobile terminal for displaying. Compared with the prior art, the method and the system have the advantages that the first communication protocol and the second communication protocol corresponding to the diagnosis service are utilized to realize the mutual communication between the mobile terminal, the server and the OBD equipment and vehicles of different manufacturers or brands, and the vehicle maintenance efficiency is improved.
Description
Technical Field
The invention relates to the field of automobile maintenance, in particular to a vehicle diagnosis system and a vehicle diagnosis method.
Background
On the premise of rapid development of the automobile industry, automobile equipment plays a crucial role in improving the life quality of people, automobiles gradually become indispensable important vehicles in daily life of people, and the quantity of the automobiles kept is increased year by year. However, during the normal service life of a vehicle, maintenance is an essential step, and on average each vehicle has several maintenance or service requirements per year. During the maintenance or service process, a special tool is needed to diagnose or communicate the vehicle, and a data interaction process exists between the vehicle and the diagnosis tool.
For the maintenance of vehicle equipment, it is conventional practice that each vehicle manufacturer is equipped with a specialized diagnostic computer and diagnostic head for vehicle connection. The service personnel not only need to receive the training of the software of the professional computers of all manufacturers, but also need to purchase the professional computers of all manufacturers. Professional computers generally integrate a plurality of high-level functions, but the high-level functions are not needed for routine maintenance and diagnosis, and the use threshold of computer software is also improved. Manufacturers can update vehicle systems irregularly, and after the vehicle systems are updated, old professional software cannot support the vehicle systems, diagnostic databases or software need to be updated, even professional computers need to be replaced, and the like. For the maintenance diagnosis related service needs to be provided for vehicles of different brands, professional computers of different brands need to be purchased, and the maintainers need to receive the training of the professional computers of different brands, which undoubtedly brings great inconvenience to the maintainers.
Disclosure of Invention
The embodiment of the application provides a vehicle diagnosis system and method suitable for communication protocols of different vehicle manufacturers or brands, and the vehicle maintenance efficiency can be effectively improved. The technical scheme is as follows:
in a first aspect, an embodiment of the present application provides a vehicle diagnostic system and method, including: the system comprises a mobile terminal, a server and an OBD device;
the mobile terminal is used for acquiring a first communication protocol and a second communication protocol according to the information of the vehicle and sending the first communication protocol to the OBD equipment; the first communication protocol is a subprotocol formed by dividing diagnostic protocols of various manufacturers or brands of vehicles according to different diagnostic services, and the second communication protocol is a subprotocol formed by dividing diagnostic protocols of various networks according to different diagnostic services;
the OBD equipment is used for establishing communication with a vehicle, acquiring diagnosis data from the vehicle according to the first communication protocol and sending the diagnosis data to the mobile terminal;
the mobile terminal is also used for analyzing the diagnosis data according to a first communication protocol so as to extract target diagnosis data, converting the target diagnosis data into data in a network protocol format used by the server according to a second communication protocol and sending the data to the server;
and the server compares the data in the network protocol format with corresponding diagnostic standard data in a database to obtain a diagnostic result and sends the diagnostic result to the mobile terminal for display.
Optionally, the acquiring the first communication protocol and the second communication protocol includes:
receiving manufacturer or brand information and diagnosis service of a vehicle input by a user, and sending the manufacturer or brand information and the diagnosis service to the server;
and acquiring a first communication protocol corresponding to the information of the vehicle and a second communication protocol corresponding to the network protocol used by the server from the server.
Optionally, the first communication protocol includes a first input end and a first output end, and the first communication protocol is used to define a data format of input data of the first input end and output data of the first output end;
the second communication protocol includes a second input and a second output, and the second communication protocol is used for defining the data format of the input data of the second input and the output data of the second output.
Optionally, before the mobile terminal obtains the first communication protocol corresponding to the information of the vehicle and the second communication protocol corresponding to the network protocol used by the server from the server, a function template corresponding to a manufacturer or a brand of the vehicle is also obtained from the server, and the interaction function and the display interface of the mobile terminal are configured according to the function template.
In a second aspect, an embodiment of the present application provides a vehicle diagnostic method, including the following steps:
the mobile terminal acquires a first communication protocol and a second communication protocol according to the information of the vehicle and sends the first communication protocol to the OBD equipment; the first communication protocol is a subprotocol formed by dividing diagnostic protocols of various manufacturers or brands of vehicles according to different diagnostic services, and the second communication protocol is a subprotocol formed by dividing diagnostic protocols of various networks according to different diagnostic services;
the OBD equipment establishes communication with the vehicle, acquires diagnosis data from the vehicle according to the first communication protocol and sends the diagnosis data to the mobile terminal;
the mobile terminal analyzes the diagnosis data according to a first communication protocol and extracts target diagnosis data from the diagnosis data; converting the target diagnosis data into data in a network protocol format used by the server according to the second communication protocol and sending the data to the server;
the server compares the data in the network protocol format with corresponding diagnostic standard data in a database to obtain a diagnostic result and sends the diagnostic result to the mobile terminal for display;
optionally, the step of acquiring the first communication protocol and the second communication protocol includes:
receiving manufacturer or brand information and diagnosis service of a vehicle input by a user, and sending the manufacturer or brand information and the diagnosis service to the server;
and acquiring a first communication protocol corresponding to the information of the vehicle and a second communication protocol corresponding to the network protocol used by the server from the server.
Optionally, before the mobile terminal obtains the first communication protocol corresponding to the information of the vehicle and the second communication protocol corresponding to the network protocol used by the server from the server, the method further includes the following steps:
and acquiring a function template corresponding to the manufacturer or brand of the vehicle from a server, and configuring the interactive function and the display interface of the mobile terminal according to the function template.
Optionally, the first communication protocol includes a first input end and a first output end, and the first communication protocol is used to define a data format of input data of the first input end and output data of the first output end;
the second communication protocol includes a second input and a second output, and the second communication protocol is used for defining the data format of the input data of the second input and the output data of the second output.
Optionally, the OBD device sends the diagnostic data to the mobile terminal by using at least one of bluetooth, W L AN, a mobile network, and a USB data line.
In the embodiment of the application, diagnostic data are obtained from vehicles by utilizing a first communication protocol formed by dividing various manufacturers or branded vehicle diagnostic protocols according to different diagnostic services and are sent to a mobile terminal, target diagnostic data are converted into data in a network protocol format used by a server by utilizing a second communication protocol formed by dividing various network protocols according to different diagnostic services and are sent to the server, and the server compares the data in the network protocol format with corresponding diagnostic standard data in a database to obtain a diagnostic result and sends the diagnostic result to the mobile terminal for displaying. The first communication protocol and the second communication protocol corresponding to the diagnosis service are utilized to realize the mutual communication between the mobile terminal, the server and the OBD equipment and vehicles of different manufacturers or brands, and the vehicle maintenance efficiency is improved.
For a better understanding and practice, the invention is described in detail below with reference to the accompanying drawings.
Drawings
FIG. 1 is a flow chart of a vehicle diagnostic system in an exemplary embodiment of the invention;
FIG. 2 is a flow chart of a vehicle diagnostic method according to an exemplary embodiment of the present invention;
fig. 3 is a flowchart of step S1 in an exemplary embodiment of the invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more clear, embodiments of the present application will be described in further detail below with reference to the accompanying drawings.
It should be understood that the embodiments described are only some embodiments of the present application, and not all embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments in the present application without any creative effort belong to the protection scope of the embodiments in the present application.
The terminology used in the embodiments of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the embodiments of the present application. As used in the examples of this application and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.
When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the application, as detailed in the appended claims. In the description of the present application, it is to be understood that the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not necessarily used to describe a particular order or sequence, nor are they to be construed as indicating or implying relative importance. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.
In addition, in the description of the present application, "a plurality" means two or more unless otherwise specified. "and/or" describes the association relationship of the associated objects, meaning that there may be three relationships, e.g., a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone. The character "/" generally indicates that the former and latter associated objects are in an "or" relationship.
Generally, automobile manufacturers of different brands have respective public diagnostic data, and the data volume is relatively large, while the mobile terminal application belongs to a lightweight application, which means that the diagnostic data cannot be processed on the mobile terminal, and the mobile terminal mainly processes request network data and processes network data. For different brands of automobiles, protocols supported by communication systems of the automobiles have differences, even under the same standard protocol, due to the self-defined expansibility of the protocol, the protocols have different degrees of differences, so that the meanings and the purposes of the protocol types are different, diagnostic data and standard protocols published by various automobile brands or manufacturers are continuously updated, and the repair and maintenance efficiency of the vehicles is low due to different diagnostic and maintenance modes of vehicles of different manufacturers or brands. In view of the above problem, as shown in fig. 1, an embodiment of the present application provides a vehicle diagnostic system, including: the system comprises a mobile terminal 1, a server 2 and an OBD device 3;
the mobile terminal 1 is used for acquiring a first communication protocol and a second communication protocol according to the information of the vehicle and sending the first communication protocol to the OBD device 2;
the first communication protocol is a subprotocol formed by dividing diagnostic protocols of various manufacturers or brands of vehicles according to different diagnostic services, and the second communication protocol is a subprotocol formed by dividing diagnostic protocols of various networks according to different diagnostic services.
The mobile terminal is used for receiving vehicle information input by a user, and the mobile terminal comprises but is not limited to a notebook computer, a tablet computer, a smart phone device and a wearable device.
The vehicle information may be manufacturer or brand information of the vehicle and a diagnostic service.
And an application program for performing data interaction with the server 3 and the OBD device 3 is installed on the mobile terminal 2, and the application program includes but is not limited to an APP client and an applet.
The communication protocol refers to rules and conventions that must be followed by two entities to complete communication or service, and defines the format used by the data unit, the information and meaning that the information unit should contain, the connection mode, and the timing of information transmission and reception, so as to ensure that data in the network is smoothly transmitted to a certain place.
The manufacturer or brand vehicle diagnostic protocol may be a communication protocol or a family of protocols and CAN protocols supported by manufacturers or brands (e.g., popular, audi, gallo, paul, etc.).
The network protocol may be a TCP or HTTP protocol.
The diagnostic service may refer to sub-service items divided according to the public standard of the communication protocol supported by each manufacturer or brand, for example, for ISO14229 supported by most manufacturers at present, sub-services such as 10, 11, 22, 2E in ISO14229 are divided into corresponding 10, 11, 22, 2E sub-protocols.
The open standards of communication protocols supported by each manufacturer or brand refer to international standards organization, authoritative automobile association, or specification standards established by the auto consortium, including but not limited to OBDII (the Second On-boardddiagnostics) standards and uds (unified diagnostic services). Wherein the OBDII standard comprises protocols such as ISO 9141-2, ISO 14230-4(KWP2000), SAE J1850PWM, SAE J1850 VPM, ISO15765-4(CAN-BUS) and the like; the UDS protocol is ISO 14229. Generally, the authoritative automobile association or consortium determines and issues published standards through the international standards organization.
The first communication protocol may be a sub-protocol corresponding to a diagnostic service of a manufacturer or brand vehicle diagnostic protocol, and may be determined according to a specific diagnostic service and manufacturer or brand. The sub-protocol is obtained by dividing the diagnosis protocol of each manufacturer or brand vehicle according to the diagnosis service, and corresponds to a certain diagnosis service of a certain manufacturer or brand vehicle diagnosis protocol. Namely: each vendor or brand vehicle diagnostic protocol may be viewed as a combination of sub-protocols, each sub-protocol corresponding to a diagnostic service, which may serve as an intermediary protocol for conversion or interaction during protocol conversion.
The second communication protocol may be a sub-protocol corresponding to a certain diagnostic service of each network protocol, and may be determined according to the network protocol of the server and the specific diagnostic service. The sub-protocols are obtained by segmenting each network protocol according to the diagnosis service and corresponding to a certain diagnosis service of a certain manufacturer or brand vehicle diagnosis protocol. Namely: each network protocol may be viewed as a combination of multiple sub-protocols, each sub-protocol corresponding to a diagnostic service, which may serve as an intermediary protocol for translation or interaction during protocol translation.
Therefore, if data conversion or interaction from the first communication protocol to the second communication protocol is to be performed in the mobile terminal, only the output data of the first communication protocol is required to be used as the input data of the second communication protocol, and the data conversion or interaction can be completed by acquiring the output data of the second communication protocol.
The OBD device 2 is used for establishing communication with the vehicle, acquiring diagnosis data from the vehicle according to the first communication protocol and sending the diagnosis data to the mobile terminal 1.
The On-Board diagnostics (OBD) is an On-Board Diagnostic system for automobiles, and is a computer program system for detecting automobile faults, and is mainly used for determining whether pollutant emission exceeds a specified value due to automobile part faults. During the driving process of the automobile, an Electronic Control Unit (ECU) of the OBD continuously monitors input information of various sensors and actuating mechanisms through an automobile bus, and when the system detects one or more fault signals, the fault information is stored in a memory in the form of fault codes.
The OBD device 2 can be connected with a vehicle through an OBD interface, and carries out dialogue with an electronic control unit of the OBD according to the first communication protocol to obtain diagnosis information.
The diagnostic data may refer to vehicle fault codes or other information.
The OBD device can transmit the diagnosis data to the mobile terminal by utilizing at least one transmission mode of Bluetooth, W L AN, a mobile network and a USB data line.
Specifically, in this embodiment of the present application, the OBD device 2 includes a controller and a bluetooth chip, where the controller is a high-precision integrated embedded chip, and is a core component of the OBD device, and is responsible for processing all logics of the OBD device. In the data processing stage, the controller mainly forwards data converted or analyzed by the mobile terminal to a CAN bus of the vehicle, and also comprises parameters for setting a vehicle communication bus, data analysis logic and OBD equipment firmware upgrading logic; meanwhile, the controller can also acquire vehicle-mounted system bus data and controller internal data through an OBD interface, wherein the vehicle-mounted system bus data refer to data required by interaction of each control module, such as whether equipment such as a vehicle speed, a temperature, a tire rotating speed, an engine torque, an accelerator, a brake pedal and an air conditioner works or not, fault information and the like; the internal data of the controller is various variable data which are acquired by a channel for providing data circulation based on a vehicle-mounted system bus and run by controller software, and the acquired vehicle diagnosis data is used for subsequent vehicle diagnosis.
The Bluetooth is mainly used for connecting the mobile terminal and the vehicle OBD equipment, and in the data transmission stage, the Bluetooth sends the acquired diagnosis data to the mobile terminal.
The mobile terminal 1 is further configured to analyze the diagnostic data according to a first communication protocol, so as to extract target diagnostic data, convert the target diagnostic data into data in a network protocol format used by the server according to the second communication protocol, and send the data to the server 3.
The diagnostic data are written according to a first communication protocol, and different from a network protocol used by the server, the server cannot be directly read, so that the diagnostic data are analyzed at the mobile terminal according to the first communication protocol, target diagnostic data are extracted, the target diagnostic data are converted into data in a network protocol format used by the server according to the second communication protocol, protocol conversion among different communication protocols is carried out at the mobile terminal, and mutual communication among the mobile terminal, the server and the OBD equipment is realized.
And the server 3 compares the data in the network protocol format with corresponding diagnostic standard data in a database to obtain a diagnostic result and sends the diagnostic result to the mobile terminal 2 for display.
The server 3 is internally provided with a database, the database stores various diagnosis data issued by various manufacturers or brands and used for diagnosing and analyzing vehicle faults, and as the application program of the mobile terminal is generally a light application and the data volume of the part is relatively large and continuously updated, the part is configured at the cloud.
In the embodiment of the application, diagnostic data are obtained from vehicles by utilizing a first communication protocol formed by dividing various manufacturers or branded vehicle diagnostic protocols according to different diagnostic services and are sent to a mobile terminal, target diagnostic data are converted into data in a network protocol format used by a server by utilizing a second communication protocol formed by dividing various network protocols according to different diagnostic services and are sent to the server, and the server compares the data in the network protocol format with corresponding diagnostic standard data in a database to obtain a diagnostic result and sends the diagnostic result to the mobile terminal for displaying. The first communication protocol and the second communication protocol corresponding to the diagnosis service are utilized to realize the mutual communication between the mobile terminal, the server and the OBD equipment and vehicles of different manufacturers or brands, so that the vehicle maintenance efficiency is improved; and the first communication protocol and the second communication protocol are used as intermediate sub-protocols of protocol conversion, the diagnosis service is used as a basic abstract unit of protocol realization, the conversion or data interaction between specific protocols is realized by executing a plurality of related services, and the conversion or data interaction between different protocols mainly depends on logic between the specific services, so that the configuration and the upgrade of the vehicle diagnosis protocol of each manufacturer or brand are facilitated.
In an exemplary embodiment, the first communication protocol includes a first input and a first output, the first communication protocol defining a data format of input data of the first input and output data of the first output;
the second communication protocol includes a second input and a second output, and the second communication protocol is used for defining the data format of the input data of the second input and the output data of the second output.
In the prior art, original data is directly analyzed according to original protocol rules to obtain data with logic, and then the part of data with logic is converted into target protocol data according to target protocol rules. In the embodiment of the application, diagnostic services according to published standards divide diagnostic protocols of various manufacturers or brands, a first communication protocol and a second communication protocol are used as intermediate subprotocols, the first communication protocol and the second communication protocol limit respective input and output data formats, only input and output of the corresponding subprotocols need to be concerned when the first communication protocol and the second communication protocol are used, specific details of the protocols do not need to be concerned, and details of protocol implementation are hidden in the subprotocols, so that dependence of specific functions on protocol implementation is decoupled. In addition, once the implementation details of the first communication protocol or the second communication protocol are modified or changed, the implementation details of the protocol only need to be modified or changed according to the input and output standards of the corresponding sub-protocols, so that the coupling of the implementation details of the protocol is reduced, the expansibility is greatly improved, and the corresponding change cost brought by the technical change is reduced.
In an exemplary embodiment, the obtaining the first communication protocol and the second communication protocol includes:
receiving manufacturer or brand information and diagnosis service of a vehicle input by a user, and sending the manufacturer or brand information and the diagnosis service to the server;
and acquiring a first communication protocol corresponding to the information of the vehicle and a second communication protocol corresponding to the network protocol used by the server from the server.
The sub-protocols formed by dividing the diagnosis protocols of various manufacturers or brands of vehicles according to different diagnosis services and the sub-protocols formed by dividing various network protocols according to different diagnosis services are stored in the server, and the function implementation details of the diagnosis services are acquired from the server according to manufacturer or brand information of the vehicles and the diagnosis services input by a user in actual application, so that the change and expansion of the logic function and the protocol layer can be quickly coped with in a cloud configuration mode, and the memory occupied by the mobile terminal program is reduced.
In an exemplary embodiment, the mobile terminal 2 is further configured to encapsulate an OBD device instruction, where the OBD device instruction is mainly used to set a parameter configuration of the OBD device and a parameter setting of a communication channel between the OBD device and a vehicle. In another exemplary embodiment, the mobile terminal 2 further includes an OBD device identity verification related function and an OBD device firmware upgrade management function, which may be used to set an OBD device firmware upgrade condition and opportunity. The related functions of the identity verification of the OBD device can be as follows: and verifying the identity of the user by acquiring the verification code input by the mobile terminal user and comparing the verification code with the verification code generated by the OBD equipment.
In an exemplary embodiment, before the mobile terminal obtains the first communication protocol corresponding to the information of the vehicle and the second communication protocol corresponding to the network protocol used by the server from the server, a function template corresponding to a manufacturer or a brand of the vehicle is also obtained from the server, and an interaction function and a display interface of the mobile terminal are configured according to the function template.
The function template refers to the flow, UI design and input/output data of each function.
In the embodiment of the application, the design of the function templates is considered on the basis of universality, usability and expansibility, the service logic is planned and arranged on the basis of the structure, distribution, use degree and basic characteristics of the service logic, a series of function templates are formed, similar functions of various manufacturers or brands of vehicles are summarized and summarized, a basic function template is designed, and different manufacturers or brands of vehicles are improved on the basis, wherein the processes, UI (user interface) designs and input and output data of the function templates corresponding to different manufacturers or brands are basically consistent, and the difference is only in that the characteristic elements of various manufacturers or brands, such as names, written description and pictures, on a display interface.
Referring to fig. 2, an embodiment of the present application further provides a vehicle diagnosis method, including the following steps:
step S1: the mobile terminal acquires a first communication protocol and a second communication protocol according to the information of the vehicle and sends the first communication protocol to the OBD equipment; the first communication protocol is a subprotocol formed by dividing diagnostic protocols of various manufacturers or brands of vehicles according to different diagnostic services, and the second communication protocol is a subprotocol formed by dividing diagnostic protocols of various networks according to different diagnostic services;
step S2: the OBD equipment establishes communication with the vehicle, acquires diagnosis data from the vehicle according to the first communication protocol and sends the diagnosis data to the mobile terminal;
step S3: the mobile terminal analyzes the diagnosis data according to a first communication protocol and extracts target diagnosis data from the diagnosis data; converting the target diagnosis data into data in a network protocol format used by the server according to the second communication protocol and sending the data to the server;
step S4: the server compares the data in the network protocol format with corresponding diagnostic standard data in a database to obtain a diagnostic result and sends the diagnostic result to the mobile terminal for display;
referring to fig. 3, in an exemplary embodiment, the step of acquiring the first communication protocol and the second communication protocol includes:
step S101: receiving manufacturer or brand information and diagnosis service of a vehicle input by a user, and sending the manufacturer or brand information and the diagnosis service to the server;
step S102: and acquiring a first communication protocol corresponding to the information of the vehicle and a second communication protocol corresponding to the network protocol used by the server from the server.
In an exemplary embodiment, the first communication protocol includes a first input and a first output, the first communication protocol defining a data format of input data of the first input and output data of the first output;
the second communication protocol includes a second input and a second output, and the second communication protocol is used for defining the data format of the input data of the second input and the output data of the second output.
In an exemplary embodiment, the step of transmitting the diagnostic data to the mobile terminal includes:
the OBD device sends the diagnosis data to the mobile terminal by using at least one transmission mode of Bluetooth, W L AN, a mobile network and a USB data line.
In an exemplary embodiment, before the mobile terminal obtains the first communication protocol corresponding to the information of the vehicle and the second communication protocol corresponding to the network protocol used by the server from the server, the method further includes the following steps:
and acquiring a function template corresponding to the manufacturer or brand of the vehicle from a server, and configuring the interactive function and the display interface of the mobile terminal according to the function template.
The method and the device realize management and conversion of different protocols (including data protocols in different fields) on a technical level, and integrate data interaction details among various protocols into a first communication protocol and a second communication protocol. On the application level, the invention solves the difference between diagnostic equipment and business logic of different brands or manufacturers, and realizes integration and unification. From the aspects of usability, expansibility and the like, the method abstracts the logics of different layers, so that data conversion and interaction among different protocols are realized by a basic abstraction unit (service), and only the input and the output of a corresponding subprotocol need to be concerned on the basis of a certain diagnostic service in the protocol, the specific details of the protocol do not need to be concerned, once the diagnostic protocol of a manufacturer or a brand is modified or changed, only the input and the output standards of the corresponding subprotocol need to be followed, and the implementation details of the protocol can be modified or changed, so that the method has the characteristics of configurability and upgradability, the product research and development design process is simplified, and the vehicle maintenance efficiency is greatly improved.
The present invention is not limited to the above-described embodiments, and various modifications and variations of the present invention are intended to be included within the scope of the claims and the equivalent technology of the present invention if they do not depart from the spirit and scope of the present invention.
Claims (10)
1. A vehicle diagnostic system, comprising: the system comprises a mobile terminal, a server and an OBD device;
the mobile terminal is used for acquiring a first communication protocol and a second communication protocol according to the information of the vehicle and sending the first communication protocol to the OBD equipment; the first communication protocol is a subprotocol formed by dividing diagnostic protocols of various manufacturers or brands of vehicles according to different diagnostic services, and the second communication protocol is a subprotocol formed by dividing diagnostic protocols of various networks according to different diagnostic services;
the OBD equipment is used for establishing communication with a vehicle, acquiring diagnosis data from the vehicle according to the first communication protocol and sending the diagnosis data to the mobile terminal;
the mobile terminal is also used for analyzing the diagnosis data according to a first communication protocol so as to extract target diagnosis data, converting the target diagnosis data into data in a network protocol format used by the server according to a second communication protocol and sending the data to the server;
and the server compares the data in the network protocol format with corresponding diagnostic standard data in a database to obtain a diagnostic result and sends the diagnostic result to the mobile terminal for display.
2. The vehicle diagnostic system of claim 1, wherein said obtaining a first communication protocol and a second communication protocol comprises:
receiving manufacturer or brand information and diagnosis service of a vehicle input by a user, and sending the manufacturer or brand information and the diagnosis service to the server;
and acquiring a first communication protocol corresponding to the information of the vehicle and a second communication protocol corresponding to the network protocol used by the server from the server.
3. The vehicle diagnostic system of claim 1, wherein: the first communication protocol comprises a first input end and a first output end, and is used for defining the data format of input data of the first input end and output data of the first output end;
the second communication protocol includes a second input and a second output, and the second communication protocol is used for defining the data format of the input data of the second input and the output data of the second output.
4. The vehicle diagnostic system of claim 2, wherein:
before the mobile terminal acquires the first communication protocol corresponding to the information of the vehicle and the second communication protocol corresponding to the network protocol used by the server from the server, the mobile terminal also acquires a function template corresponding to a manufacturer or a brand of the vehicle from the server, and configures an interactive function and a display interface of the mobile terminal according to the function template.
5. The vehicle diagnostic system of claim 1, wherein said OBD device transmits said diagnostic data to a mobile terminal using at least one of Bluetooth, W L AN, mobile network, USB data line.
6. A vehicle diagnostic method characterized by comprising the steps of:
the mobile terminal acquires a first communication protocol and a second communication protocol according to the information of the vehicle and sends the first communication protocol to the OBD equipment; the first communication protocol is a subprotocol formed by dividing diagnostic protocols of various manufacturers or brands of vehicles according to different diagnostic services, and the second communication protocol is a subprotocol formed by dividing diagnostic protocols of various networks according to different diagnostic services;
the OBD equipment establishes communication with the vehicle, acquires diagnosis data from the vehicle according to the first communication protocol and sends the diagnosis data to the mobile terminal;
the mobile terminal analyzes the diagnosis data according to a first communication protocol and extracts target diagnosis data from the diagnosis data; converting the target diagnosis data into data in a network protocol format used by the server according to the second communication protocol and sending the data to the server;
the server compares the data in the network protocol format with corresponding diagnostic standard data in a database to obtain a diagnostic result and sends the diagnostic result to the mobile terminal for display;
7. the vehicle diagnostic method of claim 6, wherein the step of obtaining the first communication protocol and the second communication protocol comprises:
receiving manufacturer or brand information and diagnosis service of a vehicle input by a user, and sending the manufacturer or brand information and the diagnosis service to the server;
and acquiring a first communication protocol corresponding to the information of the vehicle and a second communication protocol corresponding to the network protocol used by the server from the server.
8. The vehicle diagnostic method according to claim 7, wherein before the mobile terminal acquires the first communication protocol corresponding to the information of the vehicle and the second communication protocol corresponding to the network protocol used by the server from the server, the method further comprises the steps of:
and acquiring a function template corresponding to the manufacturer or brand of the vehicle from a server, and configuring the interactive function and the display interface of the mobile terminal according to the function template.
9. The vehicle diagnostic method according to claim 6, characterized in that the first communication protocol includes a first input terminal and a first output terminal, the first communication protocol being for defining a data format of input data of the first input terminal and output data of the first output terminal;
the second communication protocol includes a second input and a second output, and the second communication protocol is used for defining the data format of the input data of the second input and the output data of the second output.
10. The vehicle diagnostic method of claim 6, wherein said OBD device transmits said diagnostic data to a mobile terminal using at least one of Bluetooth, W L AN, mobile network, USB data line.
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