CN102183945A - Multifunctional remote fault diagnosis system for electric control automobile - Google Patents

Abstract

Translated fromChinese

本发明涉及一种多功能电控汽车远程故障诊断系统，由远程故障诊断服务中心、PC诊断客户端、诊断通信装置三部分组成。远程故障诊断服务中心作为系统关键，主要负责实现汽车故障诊断网络管理和汽车远程故障诊断协助功能；PC诊断客户端主要通过人机交互界面，为不同权限用户提供具体的汽车诊断应用功能以及远程诊断接口；诊断通信装置主要实现PC诊断客户端与车载网络之间的数据通信，为上层应用提供诊断数据服务。本发明以远程故障诊断服务中心为核心，以各PC诊断客户端为节点，构建汽车故障诊断网络，借助诊断通信装置实现汽车诊断数据共享，提供多功能的汽车远程故障协助及故障排除帮助，并对汽车故障信息进行统计分析，为汽车产商提供可靠的汽车质量报告。

The invention relates to a multifunctional electronically controlled automobile remote fault diagnosis system, which is composed of three parts: a remote fault diagnosis service center, a PC diagnosis client, and a diagnosis communication device. As the key to the system, the remote fault diagnosis service center is mainly responsible for the realization of vehicle fault diagnosis network management and vehicle remote fault diagnosis assistance functions; the PC diagnosis client mainly provides specific vehicle diagnosis application functions and remote diagnosis for users with different rights through the human-computer interaction interface The interface; the diagnosis communication device mainly realizes the data communication between the PC diagnosis client and the vehicle network, and provides diagnosis data service for the upper application. The present invention takes the remote fault diagnosis service center as the core, uses each PC diagnosis client terminal as the node, constructs the automobile fault diagnosis network, realizes the automobile diagnosis data sharing by means of the diagnosis communication device, provides the multifunctional automobile remote fault assistance and the troubleshooting assistance, and Carry out statistical analysis on vehicle fault information to provide reliable vehicle quality reports for vehicle manufacturers.

Description

Translated fromChinese

一种多功能电控汽车远程故障诊断系统A remote fault diagnosis system for multifunctional electronically controlled vehicles

技术领域technical field

本发明属于汽车故障诊断技术领域，特别是一种多功能电控汽车远程故障诊断系统。The invention belongs to the technical field of automobile fault diagnosis, in particular to a multifunctional electronically controlled automobile remote fault diagnosis system.

背景技术Background technique

汽车电子控制技术的发展，在提高汽车经济性、动力性、安全性、环保性、舒适性和操控性的同时，使得汽车电子控制系统的结构越来越复杂，对汽车故障诊断系统的要求也越来越高。同时也导致能跟踪和掌握汽车领域相关技术的维修技师和专家越来越匮乏，相关人员并不能得到及时的培训和技术支持，并不能满足各维修网点对维修技师的专业要求。目前电子产品在整车成本中所占比例普遍为23％～30％，在高档豪华轿车上更是占到50％～60％，而汽车70％的创新技术都集中在汽车电子上面，汽车业的发展必将更多地应用电子控制技术。许多传统的故障诊断方法和诊断设备，无论在诊断的可靠性、使用的方便性和数据的共享性方面都难以适应现代汽车技术的发展。如何快速、准确的诊断汽车电子控制系统的故障是当前汽车维修行业所面临的一大难题。针对这种情况，在电控单元的开发过程中增加了相应的故障自诊断系统，不仅能在车辆运行过程中不断监测电子控制系统各个组成部分的运行情况，还能检测出电子控制系统中的大部分故障，并以故障码的形式存储于电子控制单元的存储器中，这样不仅可以保证车辆的正常行驶，还有利于维修人员对车辆和电子控制系统的维护，以实现对汽车的在线或离线故障诊断。The development of automotive electronic control technology, while improving the economy, power, safety, environmental protection, comfort and handling of the vehicle, makes the structure of the automotive electronic control system more and more complex, and the requirements for the automotive fault diagnosis system are also increasing. Higher and higher. At the same time, it also leads to an increasing shortage of maintenance technicians and experts who can track and master related technologies in the automotive field. Relevant personnel cannot receive timely training and technical support, and cannot meet the professional requirements of maintenance technicians in various maintenance outlets. At present, the proportion of electronic products in the cost of a complete vehicle is generally 23% to 30%, and it accounts for 50% to 60% in high-end luxury cars, and 70% of innovative technologies in automobiles are concentrated in automotive electronics. The development of electronic control technology is bound to be more applied. Many traditional fault diagnosis methods and diagnostic equipment are difficult to adapt to the development of modern automobile technology in terms of reliability of diagnosis, convenience of use and sharing of data. How to quickly and accurately diagnose the faults of automotive electronic control systems is a major problem facing the current automotive maintenance industry. In response to this situation, a corresponding fault self-diagnosis system was added during the development of the electronic control unit, which can not only continuously monitor the operation of each component of the electronic control system during vehicle operation, but also detect faults in the electronic control system. Most of the faults are stored in the memory of the electronic control unit in the form of fault codes, which not only ensures the normal driving of the vehicle, but also facilitates the maintenance of the vehicle and the electronic control system by the maintenance personnel, so as to realize the online or offline of the car. Troubleshooting.

OBD(On-Board Diagnostic，车载自诊断)系统起源于20世纪80年代的美国，主要用于监测车辆在使用过程中的排放控制系统。在车辆实际使用过程中通过监测与排放控制相关部件的劣化和失控情况，及时将车辆上排放控制系统出现的异常情况通过点亮故障指示灯提醒驾驶人员检查和维修，保证车辆的排放控制系统工作正常。同时将汽车故障信息保存于控制器的存储器，通过相应的诊断设备从控制器中读取故障码，维修技师可根据故障码的定义和提示，快速准确的确定故障原因和部件。自从2005年OBD作为强制性要求首次出现在我国的法规标准中以来，国家又相继出台多项标准对其进行完善，促进了中国汽车OBD技术的发展。The OBD (On-Board Diagnostic) system originated in the United States in the 1980s and is mainly used to monitor the emission control system of the vehicle during use. During the actual use of the vehicle, by monitoring the deterioration and out-of-control of the components related to emission control, the abnormal situation of the emission control system on the vehicle will be reminded by lighting the fault indicator light to remind the driver to check and repair in time, so as to ensure the operation of the emission control system of the vehicle normal. At the same time, the vehicle fault information is stored in the memory of the controller, and the fault code is read from the controller through the corresponding diagnostic equipment. The maintenance technician can quickly and accurately determine the cause of the fault and the components according to the definition and prompt of the fault code. Since OBD first appeared in my country's laws and regulations as a mandatory requirement in 2005, the country has successively issued a number of standards to improve it and promote the development of China's automotive OBD technology.

目前市场上使用汽车故障诊断设备大多是以读码器为基础的手持式诊断仪，利用OBD诊断接口对车载网络进行诊断，将结果显示在液晶屏幕上，诊断数据保存在存储器中，再辅以维修手册完成汽车故障排除。其主要存在以下缺陷：1.诊断仪器系统固定，系统扩展升级或程序更改比较困难；2.建立在嵌入式系统上，处理器性能较低，设备运行速度慢且功能较为简单；3.系统存储空间有限，不能适应多车型、多种ECU刷新需求；4.需借助维修手册指出具体故障，不能提供智能化的诊断帮助；5.无法提供全面可靠的诊断历史数据，节约维修技师查找故障时间；6.缺乏快捷的网络支持，共享诊断数据不够充分，远程专家及时协助困难。由此可见当前的维修模式与机制，较难适应未来复杂、智能化以及远程诊断的诊断需求。At present, most of the automotive fault diagnosis equipment used in the market is a hand-held diagnostic instrument based on a code reader. It uses the OBD diagnostic interface to diagnose the vehicle network, displays the results on the LCD screen, and saves the diagnostic data in the memory. Repair manual complete car troubleshooting. It mainly has the following defects: 1. The diagnostic instrument system is fixed, and it is difficult to expand and upgrade the system or change the program; 2. Built on an embedded system, the processor performance is low, the equipment runs slowly and the function is relatively simple; 3. The system storage The space is limited, so it cannot adapt to the refresh requirements of multiple models and various ECUs; 4. It is necessary to point out specific faults with the help of maintenance manuals, and cannot provide intelligent diagnostic assistance; 5. It cannot provide comprehensive and reliable diagnostic history data, saving maintenance technicians time to find faults; 6. Lack of fast network support, insufficient sharing of diagnostic data, and difficulty in timely assistance from remote experts. It can be seen that the current maintenance mode and mechanism are difficult to adapt to the complex, intelligent and remote diagnostic needs of the future.

发明内容Contents of the invention

本发明的目的是针对传统汽车故障诊断并不能很好的解决在地域、时间、效率等多方面存在的问题，而提出一种多功能电控汽车远程故障诊断系统，实现远程故障排除，缩短售后服务时间，节约售后服务成本，提高顾客对汽车产商的售后服务满意程度。The purpose of the present invention is to propose a multi-functional electric vehicle remote fault diagnosis system to realize remote troubleshooting and shorten after-sales Reduce service time, save after-sales service costs, and improve customer satisfaction with auto manufacturers' after-sales services.

为实现上述目的，本发明采用如下技术措施来实现。In order to achieve the above object, the present invention adopts the following technical measures.

所述多功能综合型电控汽车故障诊断系统由诊断通信装置、PC诊断客户端和远程故障诊断服务中心三个部分组成。The multifunctional comprehensive electronically controlled vehicle fault diagnosis system consists of three parts: a diagnostic communication device, a PC diagnostic client and a remote fault diagnosis service center.

1、远程故障诊断服务中心：管理汽车故障诊断网络，提供如诊断通信装置和PC诊断客户端的升级、远程诊断数据的共享、远程故障的智能诊断和帮助、汽车故障诊断专家会议的管理、汽车故障信息的统计和查询等服务功能，所述远程故障诊断服务中心由诊断管理服务器、诊断帮助服务器、和数据库服务器组成。1. Remote fault diagnosis service center: manage the automobile fault diagnosis network, provide upgrades such as diagnostic communication devices and PC diagnostic clients, sharing of remote diagnostic data, intelligent diagnosis and assistance of remote faults, management of automobile fault diagnosis expert meetings, and automobile fault diagnosis Information statistics and query service functions, the remote fault diagnosis service center is composed of a diagnosis management server, a diagnosis help server, and a database server.

1.1、诊断管理服务器：包括诊断系统权限管理模块、诊断网络管理模块、诊断系统升级管理模块和车辆故障诊断统计分析模块：1.1. Diagnosis management server: including diagnosis system authority management module, diagnosis network management module, diagnosis system upgrade management module and vehicle fault diagnosis statistical analysis module:

1.1.1、系统权限管理模块：为保护系统的合法权利，提供PC诊断客户端认证及相关功能授权；1.1.1. System authority management module: To protect the legal rights of the system, provide PC diagnostic client authentication and related function authorization;

1.1.2、诊断网络管理模块：负责处理建立诊断通信网络，方便各合法PC诊断客户端的远程接入；1.1.2. Diagnostic network management module: responsible for processing and establishing a diagnostic communication network to facilitate remote access of legal PC diagnostic clients;

1.1.3、诊断系统升级管理模块：负责监测PC诊断客户端和诊断通信装置软件版本并提供下载，督促用户及时更新；1.1.3. Diagnosis system upgrade management module: responsible for monitoring the software version of PC diagnosis client and diagnosis communication device and providing downloads, and urging users to update in time;

1.1.4、车辆故障诊断统计分析模块：负责对车辆病历信息进行统计分析，以时间和行驶里程数为基础，为汽车产商提供汽车质量的可靠性参考报告。1.1.4. Statistical analysis module of vehicle fault diagnosis: responsible for statistical analysis of vehicle medical record information, based on time and mileage, to provide automobile manufacturers with reliability reference reports of automobile quality.

1.2、诊断帮助服务器包括汽车故障诊断专家系统模块、维修专家协助模块、ECU刷新模块和诊断帮助模块：1.2. The diagnosis help server includes the automobile fault diagnosis expert system module, the maintenance expert assistance module, the ECU refresh module and the diagnosis help module:

1.2.1、汽车故障诊断专家系统模块：通过两种方式为远程PC诊断客户端提供帮助，以专家知识数据库为基础进行推理指出故障原因，以车辆病历数据库为基础提供类似病历以供PC诊断客户端维修技师或维修专家参考；1.2.1. Automobile fault diagnosis expert system module: provide help for remote PC diagnosis client in two ways, reason and point out the cause of the fault based on the expert knowledge database, and provide similar medical records for PC diagnosis customers based on the vehicle medical record database End maintenance technician or maintenance expert reference;

1.2.2维修专家协助模块：负责以文字、图片、语音、视频方式，方便维修专家对远端维修技师的技术指导；1.2.2 Maintenance expert assistance module: responsible for providing technical guidance to remote maintenance technicians by maintenance experts in the form of text, pictures, voice, and video;

1.2.3、ECU刷新模块：主要负责比对客户端车辆信息，选择合适ECU刷新文件以供远程客户端下载；1.2.3. ECU Refresh Module: It is mainly responsible for comparing the vehicle information of the client and selecting the appropriate ECU refresh file for the remote client to download;

1.2.4诊断帮助模块：以帮助数据库为基础，为用户提供实质性的诊断帮助文档，帮助用户解决实际车辆故障问题。1.2.4 Diagnosis help module: Based on the help database, it provides users with substantive diagnosis help documents to help users solve actual vehicle failure problems.

1.3、数据库服务器包括用户权限数据库、版本数据库、车辆病历数据库、ECU刷新数据库、专家知识数据库、帮助数据库：1.3. The database server includes user authority database, version database, vehicle medical record database, ECU refresh database, expert knowledge database, and help database:

1.3.1、用户权限数据库：存储用户及其权限信息；1.3.1. User authority database: store users and their authority information;

1.3.2、版本数据库：存储对应PC诊断客户端及诊断装置版本信息；1.3.2. Version database: store the version information of the corresponding PC diagnostic client and diagnostic device;

1.3.3、车辆病历数据库：存储每一辆出厂车辆病历信息；1.3.3. Vehicle medical record database: store the medical record information of each ex-factory vehicle;

1.3.4、ECU刷新数据库：存储ECU刷新文件以及该文件与制造匹配信息关系；1.3.4. ECU refresh database: store the ECU refresh file and the relationship between the file and manufacturing matching information;

1.3.5、专家知识数据库：存储汽车故障诊断专家系统专家知识电子化表示；1.3.5. Expert knowledge database: store the electronic representation of expert knowledge in the vehicle fault diagnosis expert system;

1.3.6、帮助数据库：存储故障帮助数据，包括故障详细描述、故障特征、故障相关电路图、故障清除办法。1.3.6. Help database: store fault help data, including fault detailed description, fault characteristics, fault-related circuit diagrams, and fault clearing methods.

2、PC诊断客户端：与诊断通信装置相连接，作为诊断应用层，主要通过人机交互界面，为不同权限用户提供具体的汽车诊断应用功能以及远程诊断接口，可通过诊断通信装置实现对汽车故障的基本诊断，由人机交互模块、安全控制模块、诊断应用模块、数据管理模块、远程诊断模块、诊断帮助模块、软件升级模块组成。2. PC diagnostic client: connected with the diagnostic communication device, as a diagnostic application layer, mainly through the human-computer interaction interface, providing specific vehicle diagnostic application functions and remote diagnostic interfaces for users with different authorizations, and realizing vehicle diagnostics through the diagnostic communication device. The basic fault diagnosis is composed of human-computer interaction module, safety control module, diagnosis application module, data management module, remote diagnosis module, diagnosis help module and software upgrade module.

2.1、人机交互模块：为用户提供软件操作界面和显示功能，通过鼠标或键盘操作界面实现设置系统工作参数及选择各诊断应用功能，将诊断结果以文本、列表和曲线三种方式显示在显示器上以便维修技师或专家人员的查看。2.1. Human-computer interaction module: provide users with software operation interface and display function, set system working parameters and select various diagnostic application functions through the mouse or keyboard operation interface, and display the diagnosis results on the monitor in three ways: text, list and curve for viewing by a service technician or specialist personnel.

2.2、安全控制模块：负责与诊断通信装置或互联网通信时的加密、解密过程，防止他人非法窃听；同时也负责软件系统的权限控制，区分用户级别并开放不同功能。2.2. Security control module: responsible for the encryption and decryption process when communicating with diagnostic communication devices or the Internet to prevent illegal eavesdropping by others; at the same time, it is also responsible for the authority control of the software system, distinguishing user levels and opening different functions.

2.3、诊断应用模块：建立在ISO14230、ISO15765、SAE J1939诊断应用层协议基础之上，接受人机交互模块或远程诊断模块的选择，根据诊断协议的规定向诊断通信装置发送具体的诊断功能命令。2.3. Diagnosis application module: Based on the ISO14230, ISO15765, SAE J1939 diagnosis application layer protocol, it accepts the choice of human-computer interaction module or remote diagnosis module, and sends specific diagnosis function commands to the diagnosis communication device according to the provisions of the diagnosis protocol.

2.4、数据管理模块：负责PC诊断客户端的数据管理，包括车辆诊断病历信息的收集、暂存和管理，并通过远程诊断模块上传至远程诊断服务中心；其中车辆诊断病历信息包括VIN码、车牌号、维修站点、维修技师、维修时间、故障码、冻结帧、数据流编号、诊断结果、维修历史、维修结果。2.4. Data management module: responsible for the data management of the PC diagnosis client, including the collection, temporary storage and management of vehicle diagnosis medical record information, and uploading to the remote diagnosis service center through the remote diagnosis module; the vehicle diagnosis medical record information includes VIN code, license plate number , maintenance site, maintenance technician, maintenance time, fault code, freeze frame, data stream number, diagnosis result, maintenance history, maintenance result.

2.5、远程诊断模块：通过套接字将PC诊断客户端作为节点接入汽车远程故障诊断网络，在远程故障诊断服务中心的诊断帮助服务器的帮助下，实现远程诊断数据共享，协同对故障汽车进行诊断。2.5. Remote diagnosis module: Connect the PC diagnosis client as a node to the vehicle remote fault diagnosis network through sockets, and with the help of the diagnosis help server of the remote fault diagnosis service center, realize remote diagnosis data sharing, and coordinate the troubleshooting of faulty cars diagnosis.

2.6、诊断帮助模块：在本地和远程帮助数据库基础上，为维修技师提供包括故障详细描述、故障特征、故障相关电路图、故障清除办法相关信息，方便维修技师对故障汽车做详细故障分析及故障排除。2.6. Diagnosis help module: on the basis of local and remote help databases, it provides maintenance technicians with detailed fault descriptions, fault characteristics, fault-related circuit diagrams, and fault-clearing methods, so that maintenance technicians can perform detailed fault analysis and troubleshooting on faulty cars .

2.7、软件升级模块：负责及时更新PC诊断客户端和诊断通信装置的软件程序，修正当前版本软件错误，及时补充新车型诊断协议，包括软件版本比对、新版本下载和安装功能。2.7. Software upgrade module: responsible for updating the software program of the PC diagnosis client and diagnosis communication device in time, correcting the software errors of the current version, and supplementing the diagnosis protocol of new models in time, including software version comparison, new version download and installation functions.

3、诊断通信装置：主要实现诊断软件与车载网络之间通信协议转换和数据传输，由主控模块、电源模块、通信模块、固化程序刷新模块组成。3. Diagnostic communication device: mainly realizes communication protocol conversion and data transmission between the diagnostic software and the vehicle network, and is composed of a main control module, a power supply module, a communication module, and a firmware refresh module.

3.1、主控模块：以单片机为核心，控制诊断通信装置各系统的正常运转，包括诊断通信装置通信模式的切换，诊断协议的选择，数据的缓存和传输控制等。3.1. Main control module: With the single-chip microcomputer as the core, it controls the normal operation of each system of the diagnostic communication device, including switching of the communication mode of the diagnostic communication device, selection of diagnostic protocols, data buffering and transmission control, etc.

3.2电源模块：是指通过一定的电源转换电路，将车辆内部的车用电源转换为诊断通信装置各模块所需的工作电源；同时监测电源异常情况并及时采取保护措施，以保证诊断通信装置的安全性。3.2 Power supply module: refers to the conversion of the vehicle power supply inside the vehicle into the working power required by each module of the diagnostic communication device through a certain power conversion circuit; at the same time, it monitors the abnormal situation of the power supply and takes protective measures in time to ensure the safety of the diagnostic communication device. safety.

3.3通信模块：主要包括对PC诊断客户端的通信和车载网络的通信，与PC诊断客户端电脑USB、串口和蓝牙相连，实现诊断通信装置与PC诊断客户端的有线或无线数据传输；与车载网络连接则基于K线和CAN总线的诊断协议ISO14230、ISO15765、SAE J1939，实现诊断通信装置与车载网络的相应物理层、数据链路层和网络层数据传输控制。3.3 Communication module: mainly includes communication with PC diagnostic client and vehicle network, connected with PC diagnostic client computer USB, serial port and Bluetooth, realizing wired or wireless data transmission between diagnostic communication device and PC diagnostic client; connected with vehicle network Based on the diagnostic protocols ISO14230, ISO15765, and SAE J1939 of the K line and CAN bus, the corresponding physical layer, data link layer, and network layer data transmission control between the diagnostic communication device and the vehicle network is realized.

3.4、固化程序刷新模块：主要负责主控芯片的程序刷新，通过该模块将编译后的目标代码文件下载到主控芯片的FLASH存储区中。3.4. Firmware program refresh module: mainly responsible for the program refresh of the main control chip, and download the compiled object code file to the FLASH storage area of the main control chip through this module.

本发明的有益效果是：The beneficial effects of the present invention are:

1、本发明使用了汽车远程故障诊断技术，该方法摆脱了汽车诊断地域性和实时性的限制，节约售后服务成本，提高售后服务效率。1. The present invention uses the automobile remote fault diagnosis technology, which gets rid of the regional and real-time limitations of automobile diagnosis, saves the cost of after-sales service, and improves the efficiency of after-sales service.

2、本发明基于互联网平台，可以利用网络的共享特性，实现系统及时更新和扩展，以提高诊断系统的故障诊断能力。2. The present invention is based on the Internet platform, and can utilize the sharing characteristics of the network to realize timely update and expansion of the system, so as to improve the fault diagnosis ability of the diagnosis system.

3、本发明以自设计的汽车远程故障诊断网络为基础，提供专家系统智能化指导和模拟维修专家现场指导两种方式，为接入诊断网络的合法诊断客户端提供诊断帮助，提高了系统诊断帮助能力。3. Based on the self-designed remote fault diagnosis network for automobiles, the present invention provides two modes of expert system intelligent guidance and simulated maintenance expert on-site guidance, providing diagnostic assistance for legal diagnostic clients connected to the diagnostic network, and improving system diagnosis. Ability to help.

4、本发明提供两种工作模式：联网模式下，可通过互联网实现汽车远程故障诊断，提供智能化诊断帮助和指导；单机模式下，可通过PC诊断客户端与诊断通信装置直接对车辆进行诊断，协助维修技师排除故障。4. The present invention provides two working modes: in the networking mode, remote vehicle fault diagnosis can be realized through the Internet, and intelligent diagnosis help and guidance can be provided; in the stand-alone mode, the vehicle can be diagnosed directly through the PC diagnosis client and the diagnosis communication device , to assist the maintenance technician to troubleshoot.

5、本发明诊断客户端软件基于PC平台，无论是个人用户还是维修站点都可以利用现有的PC资源，只需额外购买诊断通信装置和合法授权，并可借助网络不断升级，具有成本和服务优势，具有可观的社会价值。5. The diagnostic client software of the present invention is based on the PC platform, and both individual users and maintenance sites can use existing PC resources, only need to purchase additional diagnostic communication devices and legal authorization, and can be continuously upgraded with the help of the network, with cost and service Advantages, with considerable social value.

6、本发明借助共享网络，建立汽车故障诊断病历库，可供维修技师或维修专家查看，也可通过车辆故障诊断统计分析模块进行分析处理，为汽车产商的研发和生产制造提供参考依据，及时发现汽车设计缺陷，提高生产车辆性能。6. With the help of the shared network, the present invention establishes a car fault diagnosis medical record library, which can be viewed by maintenance technicians or maintenance experts, and can also be analyzed and processed through the vehicle fault diagnosis statistical analysis module to provide reference for the research and development and production of automobile manufacturers. Improving the performance of production vehicles by discovering vehicle design flaws in a timely manner.

附图说明Description of drawings

图1为本发明结构示意图；Fig. 1 is a structural representation of the present invention;

图2为本发明的联网模式实施例1示意图；Fig. 2 is a schematic diagram of Embodiment 1 of the networking mode of the present invention;

图3为本发明的单机模式实施例2示意图。FIG. 3 is a schematic diagram of Embodiment 2 of the stand-alone mode of the present invention.

具体实施方式Detailed ways

下面结合附图和实例对本发明作进一步说明，显然所述实例仅仅是本发明的一部分实施例，而不是全部实施例，所以所述实施例不应理解为对本发明的限制。The present invention will be further described below in conjunction with the accompanying drawings and examples. Obviously, the examples are only a part of the embodiments of the present invention, not all of them, so the embodiments should not be construed as limiting the present invention.

一种多功能电控汽车故障诊断系统有两种工作模式：联网模式下，可通过互联网实现汽车远程故障诊断，提供智能化诊断帮助和指导；单机模式下，可通过PC诊断客户端与诊断通信装置直接对车辆进行诊断，协助维修技师排除故障。A multi-functional electronically controlled vehicle fault diagnosis system has two working modes: In the networking mode, the remote fault diagnosis of the vehicle can be realized through the Internet, providing intelligent diagnosis help and guidance; in the stand-alone mode, the PC diagnosis client can communicate with the diagnosis The device directly diagnoses the vehicle and assists the maintenance technician in troubleshooting.

当一种多功能电控汽车远程故障诊断系统及方法处于联网诊断模式时，PC诊断客户端可通过构建的诊断网络以多方式获取远程诊断协助，其工作流程如图2所示：When a multifunctional electronically controlled vehicle remote fault diagnosis system and method are in the network diagnosis mode, the PC diagnosis client can obtain remote diagnosis assistance in multiple ways through the constructed diagnosis network, and its workflow is shown in Figure 2:

201、远程诊断。201. Remote diagnosis.

202、PC诊断客户端网络在存在网络连接的情况，自动发送登陆诊断网络请求。202. When there is a network connection in the PC diagnostic client network, automatically send a request for logging in to the diagnostic network.

203、诊断网络管理模块对PC诊断客户端接入请求进行验证，确认其是否为合法用户及其权限；203. The diagnosis network management module verifies the access request of the PC diagnosis client, and confirms whether it is a legal user and its authority;

204、验证错误，非法用户接入直接退出诊断；204. Verification error, illegal user access directly exits the diagnosis;

205、诊断专家系统从PC诊断客户端获取相关车辆诊断数据，进行推理比较，智能化指定故障原因，提供诊断帮助；205. The diagnostic expert system obtains relevant vehicle diagnostic data from the PC diagnostic client, performs reasoning and comparison, intelligently specifies the cause of the fault, and provides diagnostic assistance;

206、判断诊断专家系统是否解决PC诊断客户端当前故障问题，如是，则到213解决具体故障；如否，进入207请求维修专家提供进一步帮助；206. Determine whether the diagnostic expert system solves the current fault problem of the PC diagnostic client, if so, go to 213 to solve the specific fault; if not, go to 207 to request the maintenance expert to provide further help;

207、维修技师通过PC诊断客户端，向更高级维修网点维修专家或汽车产商维修专家请求诊断协助；207. The maintenance technician requests diagnostic assistance from the maintenance experts of the higher-level maintenance network or the maintenance experts of the automobile manufacturer through the PC diagnosis client;

208、诊断网络管理模块为维修技师的PC诊断客户端与维修专家的PC诊断客户端建立对应映射关系，并通过NAT穿透技术，建立两客户端的端到端连接；208. The diagnosis network management module establishes a corresponding mapping relationship between the PC diagnosis client of the maintenance technician and the PC diagnosis client of the maintenance expert, and establishes an end-to-end connection between the two clients through NAT penetration technology;

209、维修技师与维修专家通过文字、图片、语音、视频形式共享数据，并提供诊断帮助；209. Maintenance technicians and maintenance experts share data through text, pictures, voice, and video, and provide diagnostic assistance;

210、判断当前维修专家是否解决PC诊断客户端当前故障问题，如是，则到213解决具体故障；如否，进入211请求多维修专家提供进一步帮助；210. Determine whether the current maintenance expert has solved the current failure problem of the PC diagnosis client, if yes, go to 213 to solve the specific failure; if not, enter 211 to request further help from multiple maintenance experts;

211、在309未能完成诊断的情况下，利用诊断网络邀请多名诊断共同诊断；211. Using the diagnosis network to invite multiple diagnoses to make a joint diagnosis when the diagnosis is not completed in 309;

212、服务中心维修专家协助模块共享当前诊断数据，协调多维修专家对远端维修技师的技术指导；212. The maintenance experts in the service center assist the module to share current diagnostic data, and coordinate the technical guidance of multiple maintenance experts to the remote maintenance technicians;

213、解决具体故障；213. Solve specific faults;

214、将诊断结果存入数据库；214. Store the diagnosis result in the database;

215、诊断结束。215. The diagnosis is over.

当一种多功能电控汽车远程故障诊断系统及方法处于单机模式时，工作流程如图3所示：When a multifunctional electronically controlled vehicle remote fault diagnosis system and method are in stand-alone mode, the workflow is shown in Figure 3:

301、开始诊断，通过OBD接口对诊断通信装置供电及建立诊断通信装置与车载网络的物理连接。301. Start the diagnosis, supply power to the diagnostic communication device through the OBD interface, and establish a physical connection between the diagnostic communication device and the vehicle network.

302、进行诊断通信装置硬件和软件的初始化；302. Initialize the hardware and software of the diagnostic communication device;

303、检测诊断通信装置与诊断电脑连接方式，如为有线连接，则进入305，如果为无线连接则进入304；303. Detect the connection mode between the diagnostic communication device and the diagnostic computer. If it is a wired connection, go to 305, and if it is a wireless connection, go to 304;

304、在无线连接的情况下，选择蓝牙通信进入306；304. In the case of wireless connection, select Bluetooth communication to enter 306;

305、在有线连接的情况下，对于串口连接则使用串口线，USB连接则使用USB数据线；305. In the case of a wired connection, use a serial port cable for a serial port connection, and use a USB data cable for a USB connection;

306、启动PC诊断客户端软件，系统自动搜索所连端口，并对端口进行初始化设置；306. Start the PC diagnostic client software, the system automatically searches for the connected port, and initializes the port;

307、PC诊断客户端软件向诊断通信装置发送认证指令，检测PC诊断客户端与诊断通信装置是否匹配，如果认证成功进入309，否则进入308；307. The PC diagnostic client software sends an authentication instruction to the diagnostic communication device, and checks whether the PC diagnostic client matches the diagnostic communication device. If the authentication is successful, enter 309, otherwise, enter 308;

308、警告PC诊断客户单软件与诊断通信装置连接异常，然后进入326，退出诊断；308. Warn the connection between the PC diagnosis customer order software and the diagnosis communication device, and then enter 326 to exit the diagnosis;

309、进行诊断车型选择，确定诊断协议并初始化相关命令；309. Carry out diagnosis vehicle model selection, determine the diagnosis protocol and initialize related commands;

310、选择诊断功能，包括读故障码、清除故障码、读数据流、读帧冻结、读ECU信息、动作测试，ECU程序刷新功能；310. Select diagnostic functions, including reading fault codes, clearing fault codes, reading data streams, reading frame freezes, reading ECU information, action testing, and ECU program refresh functions;

311、根据210选择具体功能，选择具体诊断指令；311. Select a specific function according to 210, and select a specific diagnosis instruction;

312、将具体诊断指令以有线或无线方式发送至诊断通信装置；312. Send specific diagnostic instructions to the diagnostic communication device in a wired or wireless manner;

313、诊断通信装置接收诊断指令后，如果为OBD诊断指令则进入315，如果为诊断通信设置指令则进入314；313. After the diagnostic communication device receives the diagnostic command, if it is an OBD diagnostic command, go to 315, if it is a diagnostic communication setting command, go to 314;

314、根据指令内容，设置诊断通信设置运行参数；314. According to the instruction content, set the diagnostic communication setting operation parameters;

315、主控模块将诊断指令发送到协议转换模块进行解析。315. The main control module sends the diagnosis command to the protocol conversion module for parsing.

316、协议转换模块对诊断指令转换为车载网络标准信号发送到车载网络K线或CAN总线上；316. The protocol conversion module converts the diagnostic command into a vehicle network standard signal and sends it to the vehicle network K line or CAN bus;

317、ECU接收到诊断指令后对指令进行处理并反馈数据；317. After receiving the diagnosis command, the ECU processes the command and feeds back the data;

318、诊断通信装置接收ECU反馈数据并经协议转换模块转换后，送至主控模块；318. The diagnostic communication device receives the feedback data from the ECU and sends it to the main control module after being converted by the protocol conversion module;

319、主控模块将反馈数据发送给PC诊断客户端；319. The main control module sends the feedback data to the PC diagnosis client;

320、PC诊断客户端接收反馈数据，并对数据进行校验和解析；320. The PC diagnosis client receives the feedback data, and verifies and analyzes the data;

321、对数据进行处理，以文字、表格或图形化显示出来。321. Process the data and display it in text, table or graph.

322、判定是否为数据流循环读取模式，如是则返回312再次发送相关命令，如否则进入323；322. Determine whether it is the data flow cyclic reading mode, if so, return to 312 and send the relevant command again, otherwise enter 323;

323、在已有数据情况下，进行简单分析，给出诊断帮助。323. In the case of existing data, conduct simple analysis and give diagnosis help.

324、维修技师或维修专家着手解决故障；324. The maintenance technician or maintenance expert starts to solve the fault;

325、将车辆诊断结果存入数据库，以便制作汽车故障诊断病历；325. Store the vehicle diagnosis results in the database so as to make medical records for vehicle fault diagnosis;

326、诊断结束。326. The diagnosis is over.

本说明书中未作详细描述的内容属于本领域专业技术人员公知的现有技术。The content not described in detail in this specification belongs to the prior art known to those skilled in the art.

Claims (9)

Translated fromChinese

1.一种多功能电控汽车远程故障诊断系统，由诊断通信装置、PC诊断客户端和远程故障诊断服务中心三个部分组成，1. A multifunctional electronically controlled vehicle remote fault diagnosis system, which consists of three parts: a diagnostic communication device, a PC diagnostic client and a remote fault diagnosis service center,远程故障诊断服务中心：管理汽车故障诊断网络，提供如诊断通信装置和PC诊断客户端的升级、远程诊断数据的共享、远程故障的智能诊断和帮助、汽车故障诊断专家会议的管理、汽车故障信息的统计和查询功能，所述远程故障诊断服务中心由诊断管理服务器、诊断帮助服务器、和数据库服务器组成；Remote fault diagnosis service center: manage the vehicle fault diagnosis network, provide upgrades such as diagnostic communication devices and PC diagnostic clients, sharing of remote diagnostic data, intelligent diagnosis and assistance of remote faults, management of automobile fault diagnosis expert meetings, and collection of vehicle fault information Statistical and query functions, the remote fault diagnosis service center is composed of a diagnosis management server, a diagnosis help server, and a database server;PC诊断客户端：与诊断通信装置相连接，作为诊断应用层，主要通过人机交互界面，为不同权限用户提供具体的汽车诊断应用功能以及远程诊断接口，可通过诊断通信装置实现对汽车故障的基本诊断，由人机交互模块、安全控制模块、诊断应用模块、数据管理模块、远程诊断模块、诊断帮助模块、软件升级模块组成；PC diagnostic client: connected with the diagnostic communication device, as a diagnostic application layer, mainly through the human-computer interaction interface, providing specific vehicle diagnostic application functions and remote diagnostic interfaces for users with different rights, and realizing the diagnosis of vehicle faults through the diagnostic communication device Basic diagnosis is composed of human-computer interaction module, safety control module, diagnosis application module, data management module, remote diagnosis module, diagnosis help module and software upgrade module;诊断通信装置：实现诊断软件与车载网络之间通信协议转换和数据传输，由主控模块、电源模块、通信模块、固化程序刷新模块组成。Diagnostic communication device: realizes communication protocol conversion and data transmission between the diagnostic software and the vehicle network, and is composed of a main control module, a power supply module, a communication module, and a firmware refresh module.2.如权利要求1所述的多功能电控汽车远程故障诊断系统，其特征在于：所述远程故障诊断服务中心中：2. The multifunctional electronically controlled vehicle remote fault diagnosis system as claimed in claim 1, characterized in that: in the remote fault diagnosis service center:诊断管理服务器：包括诊断系统权限管理模块、诊断网络管理模块、诊断系统升级管理模块和车辆故障诊断统计分析模块；Diagnosis management server: including diagnostic system authority management module, diagnostic network management module, diagnostic system upgrade management module and vehicle fault diagnosis statistical analysis module;诊断帮助服务器：包括汽车故障诊断专家系统模块、维修专家协助模块、ECU刷新模块和诊断帮助模块；Diagnosis help server: including automobile fault diagnosis expert system module, maintenance expert assistance module, ECU refresh module and diagnosis help module;数据库服务器：包括用户权限数据库、版本数据库、车辆病历数据库、ECU刷新数据库、专家知识数据库、帮助数据库。Database server: including user authority database, version database, vehicle medical record database, ECU refresh database, expert knowledge database, and help database.3.如权利要求2所述的多功能电控汽车远程故障诊断系统，其特征在于：所述诊断管理服务器中：3. The multifunctional electronically controlled vehicle remote fault diagnosis system as claimed in claim 2, characterized in that: in the diagnosis management server:系统权限管理模块：为保护系统的合法权利，提供PC诊断客户端认证及相关功能授权；System rights management module: To protect the legal rights of the system, provide PC diagnostic client authentication and related function authorization;诊断网络管理模块：负责处理建立诊断通信网络，方便各合法PC诊断客户端的远程接入；Diagnostic network management module: responsible for processing and establishing a diagnostic communication network to facilitate remote access of legal PC diagnostic clients;诊断系统升级管理模块：负责监测PC诊断客户端和诊断通信装置软件版本并提供下载，督促用户及时更新；Diagnostic system upgrade management module: responsible for monitoring the PC diagnostic client and diagnostic communication device software versions and providing downloads, and urging users to update in time;车辆故障诊断统计分析模块：负责对车辆病历信息进行统计分析，以时间和行驶里程数为基础，为汽车产商提供汽车质量的可靠性参考报告。Statistical Analysis Module of Vehicle Fault Diagnosis: Responsible for statistical analysis of vehicle medical record information, based on time and mileage, to provide automobile manufacturers with reliability reference reports of automobile quality.4.如权利要求2所述的多功能电控汽车远程故障诊断系统，其特征在于：所述诊断帮助服务器中4. The multifunctional electronically controlled vehicle remote fault diagnosis system as claimed in claim 2, characterized in that: in the diagnosis help server汽车故障诊断专家系统模块：通过两种方式为远程PC诊断客户端提供帮助，以专家知识数据库为基础进行推理指出故障原因，以车辆病历数据库为基础提供类似病历以供PC诊断客户端维修技师或维修专家参考；Automobile fault diagnosis expert system module: provide assistance for the remote PC diagnosis client in two ways, reason and point out the cause of the fault based on the expert knowledge database, and provide similar medical records based on the vehicle medical record database for PC diagnosis client maintenance technicians or Maintenance expert reference;维修专家协助模块：负责以文字、图片、语音、视频方式，方便维修专家对远端维修技师的技术指导；Maintenance expert assistance module: responsible for providing technical guidance to remote maintenance technicians by maintenance experts in the form of text, pictures, voice, and video;ECU刷新模块：主要负责比对客户端车辆信息，选择合适ECU刷新文件以供远程客户端下载；ECU Refresh Module: It is mainly responsible for comparing the vehicle information of the client, and selecting the appropriate ECU refresh file for the remote client to download;诊断帮助模块：以帮助数据库为基础，为用户提供实质性的诊断帮助文档，帮助用户解决实际车辆故障问题。Diagnosis help module: Based on the help database, it provides users with substantive diagnosis help documents to help users solve actual vehicle failure problems.5.如权利要求2所述的多功能电控汽车远程故障诊断系统，其特征在于：所述数据库服务器中：5. The multifunctional electronically controlled vehicle remote fault diagnosis system as claimed in claim 2, characterized in that: in the database server:用户权限数据库：存储用户及其权限信息；User permission database: store users and their permission information;版本数据库：存储对应PC诊断客户端及诊断装置版本信息；Version database: store the version information of the corresponding PC diagnostic client and diagnostic device;车辆病历数据库：存储每一辆出厂车辆病历信息；Vehicle medical record database: store the medical record information of each ex-factory vehicle;ECU刷新数据库：存储ECU刷新文件以及该文件与制造匹配信息关系；ECU refresh database: store the ECU refresh file and the relationship between the file and manufacturing matching information;专家知识数据库：存储汽车故障诊断专家系统专家知识电子化表示；Expert knowledge database: store the electronic representation of expert knowledge of the automobile fault diagnosis expert system;帮助数据库：存储故障帮助数据，包括故障详细描述、故障特征、故障相关电路图、故障清除办法。Help database: store fault help data, including fault detailed description, fault characteristics, fault-related circuit diagrams, and fault clearing methods.6.如权利要求1所述的多功能电控汽车远程故障诊断系统，其特征在于：所述PC诊断客户端中：6. The multifunctional electronically controlled vehicle remote fault diagnosis system as claimed in claim 1, characterized in that: in the PC diagnosis client:人机交互模块：为用户提供软件操作界面和显示功能，通过鼠标或键盘操作界面实现设置系统工作参数及选择各诊断应用功能，将诊断结果以文本、列表和曲线三种方式显示在显示器上以便维修技师或专家人员的查看；Human-computer interaction module: provide users with software operation interface and display function, set system working parameters and select various diagnostic application functions through the mouse or keyboard operation interface, and display the diagnosis results on the monitor in three ways: text, list and curve. inspection by service technicians or specialist personnel;安全控制模块：负责与诊断通信装置或互联网通信时的加密、解密过程，防止他人非法窃听；同时也负责软件系统的权限控制，区分用户级别并开放不同功能；Security control module: responsible for the encryption and decryption process when communicating with diagnostic communication devices or the Internet to prevent illegal eavesdropping by others; at the same time, it is also responsible for the authority control of the software system, distinguishing user levels and opening different functions;诊断应用模块：建立在ISO14230、ISO15765、SAE J1939诊断应用层协议基础之上，接受人机交互模块或远程诊断模块的选择，根据诊断协议的规定向诊断通信装置发送具体的诊断功能命令；Diagnosis application module: based on the ISO14230, ISO15765, SAE J1939 diagnosis application layer protocol, accept the selection of human-computer interaction module or remote diagnosis module, and send specific diagnosis function commands to the diagnosis communication device according to the provisions of the diagnosis protocol;数据管理模块：负责PC诊断客户端的数据管理，包括车辆诊断病历信息的收集、暂存和管理，并通过远程诊断模块上传至远程诊断服务中心；其中车辆诊断病历信息包括VIN码、车牌号、维修站点、维修技师、维修时间、故障码、冻结帧、数据流编号、诊断结果、维修历史、维修结果；Data management module: responsible for the data management of the PC diagnosis client, including the collection, temporary storage and management of vehicle diagnosis medical record information, and uploading to the remote diagnosis service center through the remote diagnosis module; the vehicle diagnosis medical record information includes VIN code, license plate number, maintenance Site, maintenance technician, maintenance time, fault code, freeze frame, data stream number, diagnosis result, maintenance history, maintenance result;远程诊断模块：通过套接字将PC诊断客户端作为节点接入汽车远程故障诊断网络，在远程故障诊断服务中心的诊断帮助服务器的帮助下，实现远程诊断数据共享，协同对故障汽车进行诊断；Remote diagnosis module: Connect the PC diagnosis client as a node to the vehicle remote fault diagnosis network through sockets, and with the help of the diagnosis help server in the remote fault diagnosis service center, realize remote diagnosis data sharing and collaborative diagnosis of faulty vehicles;诊断帮助模块：在本地和远程帮助数据库基础上，为维修技师提供包括故障详细描述、故障特征、故障相关电路图、故障清除办法相关信息，方便维修技师对故障汽车做详细故障分析及故障排除；Diagnostic help module: Based on the local and remote help database, it provides maintenance technicians with detailed fault descriptions, fault characteristics, fault-related circuit diagrams, and fault-clearing methods, so that maintenance technicians can perform detailed fault analysis and troubleshooting on faulty cars;软件升级模块：负责及时更新PC诊断客户端和诊断通信装置的软件程序，修正当前版本软件错误，及时补充新车型诊断协议，包括软件版本比对、新版本下载和安装功能。Software upgrade module: responsible for timely updating the software program of the PC diagnostic client and diagnostic communication device, correcting the current version software errors, timely supplementing the new model diagnostic protocol, including software version comparison, new version download and installation functions.7.如权利要求1所述的多功能电控汽车远程故障诊断系统，其特征在于：所述诊断通信装置中：7. The multifunctional electronically controlled vehicle remote fault diagnosis system according to claim 1, characterized in that: in the diagnostic communication device:主控模块：以单片机为核心，控制诊断通信装置各系统的正常运转，包括诊断通信装置通信模式的切换，诊断协议的选择，数据的缓存和传输控制；Main control module: take the single-chip microcomputer as the core, control the normal operation of each system of the diagnostic communication device, including the switching of the communication mode of the diagnostic communication device, the selection of the diagnostic protocol, data buffering and transmission control;电源模块：是指通过一定的电源转换电路，将车辆内部的车用电源转换为诊断通信装置各模块所需的工作电源；同时监测电源异常情况并及时采取保护措施，以保证诊断通信装置的安全性；Power supply module: refers to converting the vehicle power supply inside the vehicle into the working power required by each module of the diagnostic communication device through a certain power conversion circuit; at the same time, monitoring the abnormal situation of the power supply and taking protective measures in time to ensure the safety of the diagnostic communication device sex;通信模块：主要包括对PC诊断客户端的通信和车载网络的通信，与PC诊断客户端电脑USB、串口和蓝牙相连，实现诊断通信装置与PC诊断客户端的有线或无线数据传输；与车载网络连接则基于K线和CAN总线的诊断协议ISO14230、ISO15765、SAE J1939，实现诊断通信装置与车载网络的相应物理层、数据链路层和网络层数据传输控制；Communication module: mainly includes communication with PC diagnostic client and vehicle network, connected with PC diagnostic client computer USB, serial port and Bluetooth, to realize wired or wireless data transmission between diagnostic communication device and PC diagnostic client; connection with vehicle network Diagnosis protocol ISO14230, ISO15765, SAE J1939 based on K-line and CAN bus to realize corresponding physical layer, data link layer and network layer data transmission control between diagnostic communication device and vehicle network;固化程序刷新模块：主要负责主控芯片的程序刷新，通过该模块将编译后的目标代码文件下载到主控芯片的FLASH存储区中。Firmware program refresh module: mainly responsible for the program refresh of the main control chip, through which the compiled object code file is downloaded to the FLASH storage area of the main control chip.8.如权利要求1所述的多功能电控汽车远程故障诊断系统，其特征在于：在联网模式下的远程诊断方法是：8. The multifunctional electronically controlled vehicle remote fault diagnosis system as claimed in claim 1, characterized in that: the remote diagnosis method in networking mode is:202、PC诊断客户端网络在存在网络连接的情况，自动发送登陆诊断网络请求；202. When there is a network connection in the PC diagnosis client network, automatically send a login diagnosis network request;203、诊断网络管理模块对PC诊断客户端接入请求进行验证，确认其是否为合法用户及其权限；203. The diagnosis network management module verifies the access request of the PC diagnosis client, and confirms whether it is a legal user and its authority;204、验证错误，非法用户接入直接退出诊断；204. Verification error, illegal user access directly exits the diagnosis;205、诊断专家系统从PC诊断客户端获取相关车辆诊断数据，进行推理比较，智能化指定故障原因，提供诊断帮助；205. The diagnostic expert system obtains relevant vehicle diagnostic data from the PC diagnostic client, performs reasoning and comparison, intelligently specifies the cause of the fault, and provides diagnostic assistance;206、判断诊断专家系统是否解决PC诊断客户端当前故障问题，如是，则到213解决具体故障；如否，进入207请求维修专家提供进一步帮助；206. Determine whether the diagnostic expert system solves the current fault problem of the PC diagnostic client, if so, go to 213 to solve the specific fault; if not, go to 207 to request the maintenance expert to provide further help;207、维修技师通过PC诊断客户端，向更高级维修网点维修专家或汽车产商维修专家请求诊断协助；207. The maintenance technician requests diagnostic assistance from the maintenance experts of the higher-level maintenance network or the maintenance experts of the automobile manufacturer through the PC diagnosis client;208、诊断网络管理模块为维修技师的PC诊断客户端与维修专家的PC诊断客户端建立对应映射关系，并通过NAT穿透技术，建立两客户端的端到端连接；208. The diagnosis network management module establishes a corresponding mapping relationship between the PC diagnosis client of the maintenance technician and the PC diagnosis client of the maintenance expert, and establishes an end-to-end connection between the two clients through NAT penetration technology;209、维修技师与维修专家通过文字、图片、语音、视频形式共享数据，并提供诊断帮助；209. Maintenance technicians and maintenance experts share data through text, pictures, voice, and video, and provide diagnostic assistance;210、判断当前维修专家是否解决PC诊断客户端当前故障问题，如是，则到213解决具体故障；如否，进入211请求多维修专家提供进一步帮助；210. Determine whether the current maintenance expert has solved the current failure problem of the PC diagnosis client, if yes, go to 213 to solve the specific failure; if not, enter 211 to request further help from multiple maintenance experts;211、在209未能完成诊断的情况下，利用诊断网络邀请多名诊断共同诊断；211. In the case of failure to complete the diagnosis in 209, use the diagnosis network to invite multiple diagnoses to make a joint diagnosis;212、服务中心维修专家协助模块共享当前诊断数据，协调多维修专家对远端维修技师的技术指导；212. The maintenance experts in the service center assist the module to share current diagnostic data, and coordinate the technical guidance of multiple maintenance experts to the remote maintenance technicians;213、解决具体故障；213. Solve specific faults;214、将诊断结果存入数据库；214. Store the diagnosis result in the database;215、诊断结束。215. The diagnosis is over.9.如权利要求1所述的多功能电控汽车远程故障诊断系统，其特征在于：在单机模式的远程诊断方法是：9. The multifunctional electronically controlled vehicle remote fault diagnosis system as claimed in claim 1, characterized in that: the remote diagnosis method in stand-alone mode is:301、开始诊断，通过OBD接口对诊断通信装置供电及建立诊断通信装置与车载网络的物理连接；301. Start the diagnosis, supply power to the diagnostic communication device through the OBD interface and establish a physical connection between the diagnostic communication device and the vehicle network;302、进行诊断通信装置硬件和软件的初始化；302. Initialize the hardware and software of the diagnostic communication device;303、检测诊断通信装置与诊断电脑连接方式，如为有线连接，则进入305，如果为无线连接则进入304；303. Detect the connection mode between the diagnostic communication device and the diagnostic computer. If it is a wired connection, go to 305, and if it is a wireless connection, go to 304;304、在无线连接的情况下，选择蓝牙通信进入306；304. In the case of wireless connection, select Bluetooth communication to enter 306;305、在有线连接的情况下，对于串口连接则使用串口线，USB连接则使用USB数据线；305. In the case of a wired connection, use a serial port cable for a serial port connection, and use a USB data cable for a USB connection;306、启动PC诊断客户端软件，系统自动搜索所连端口，并对端口进行初始化设置；306. Start the PC diagnostic client software, the system automatically searches for the connected port, and initializes the port;307、PC诊断客户端软件向诊断通信装置发送认证指令，检测PC诊断客户端与诊断通信装置是否匹配，如果认证成功进入309，否则进入308；307. The PC diagnostic client software sends an authentication instruction to the diagnostic communication device, and checks whether the PC diagnostic client matches the diagnostic communication device. If the authentication is successful, enter 309, otherwise, enter 308;308、警告PC诊断客户单软件与诊断通信装置连接异常，然后进入326，退出诊断；308. Warn the connection between the PC diagnosis customer order software and the diagnosis communication device, and then enter 326 to exit the diagnosis;309、进行诊断车型选择，确定诊断协议并初始化相关命令；309. Carry out diagnosis vehicle model selection, determine the diagnosis protocol and initialize related commands;310、选择诊断功能，包括读故障码、清除故障码、读数据流、读帧冻结、读ECU信息、动作测试，ECU程序刷新功能；310. Select diagnostic functions, including reading fault codes, clearing fault codes, reading data streams, reading frame freezes, reading ECU information, action testing, and ECU program refresh functions;311、根据210选择具体功能，选择具体诊断指令；311. Select a specific function according to 210, and select a specific diagnosis instruction;312、将具体诊断指令以有线或无线方式发送至诊断通信装置；312. Send specific diagnostic instructions to the diagnostic communication device in a wired or wireless manner;313、诊断通信装置接收诊断指令后，如果为OBD诊断指令则进入315，如果为诊断通信设置指令则进入314；313. After the diagnostic communication device receives the diagnostic command, if it is an OBD diagnostic command, go to 315, if it is a diagnostic communication setting command, go to 314;314、根据指令内容，设置诊断通信设置运行参数；314. According to the instruction content, set the diagnostic communication setting operation parameters;315、主控模块将诊断指令发送到协议转换模块进行解析；315. The main control module sends the diagnostic instruction to the protocol conversion module for analysis;316、协议转换模块对诊断指令转换为车载网络标准信号发送到车载网络K线或CAN总线上；316. The protocol conversion module converts the diagnostic command into a vehicle network standard signal and sends it to the vehicle network K line or CAN bus;317、ECU接收到诊断指令后对指令进行处理并反馈数据；317. After receiving the diagnosis command, the ECU processes the command and feeds back the data;318、诊断通信装置接收ECU反馈数据并经协议转换模块转换后，送至主控模块；318. The diagnostic communication device receives the feedback data from the ECU and sends it to the main control module after being converted by the protocol conversion module;319、主控模块将反馈数据发送给PC诊断客户端；319. The main control module sends the feedback data to the PC diagnosis client;320、PC诊断客户端接收反馈数据，并对数据进行校验和解析；320. The PC diagnosis client receives the feedback data, and verifies and analyzes the data;321、对数据进行处理，以文字、表格或图形化显示出来；321. Process the data and display it in text, form or graph;322、判定是否为数据流循环读取模式，如是则返回312再次发送相关命令，如否则进入323；322. Determine whether it is the data flow cyclic reading mode, if so, return to 312 and send the relevant command again, otherwise enter 323;323、在已有数据情况下，进行简单分析，给出诊断帮助。323. In the case of existing data, conduct simple analysis and give diagnosis help.324、维修技师或维修专家着手解决故障；324. The maintenance technician or maintenance expert starts to solve the fault;325、将车辆诊断结果存入数据库，以便制作汽车故障诊断病历；325. Store the vehicle diagnosis results in the database so as to make medical records for vehicle fault diagnosis;326、诊断结束。326. The diagnosis is over.

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