CN103019232A - Fault diagnosis system for automobiles - Google Patents
Fault diagnosis system for automobiles Download PDFInfo
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- CN103019232A CN103019232A CN2012105572525A CN201210557252A CN103019232A CN 103019232 A CN103019232 A CN 103019232A CN 2012105572525 A CN2012105572525 A CN 2012105572525A CN 201210557252 A CN201210557252 A CN 201210557252A CN 103019232 A CN103019232 A CN 103019232A
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Abstract
The invention discloses a fault diagnosis system for automobiles. An electronic control unit is connected with a controller area network (CAN)-universal serial bus (USB) conversion card through an automobile CAN bus, the CAN-USB conversion card is connected with an intelligent device through a USB-on-the-go (OTG) data line, the intelligent device reads fault codes and judges whether remote diagnosis is requested, the intelligent device sends the fault codes to a remote fault diagnosis server through a wireless network if the remote diagnosis is requested, the remote fault diagnosis server receives the fault codes, obtains fault information and solutions corresponding to the fault codes and sends the fault information and the solutions to the intelligent device through the wireless network, and the intelligent device obtains the fault information and the solutions corresponding to the fault codes if the remote diagnosis is not request. The fault diagnosis system timely guides users to maintain the automobiles and reduces costs, labor power and material resources of the users, so that the users need not purchase vehicle diagnosis devices, the pollution of a large number of electronic products on environments is avoided with the popularization of intelligent devices, and green and environment-friendly ideas are achieved.
Description
Technical field
The present invention relates to fault diagnosis system, relate in particular to a kind of fault diagnosis system for automobile.
Background technology
In recent years, along with the develop rapidly of automobile control technology, network technology and mechanics of communication, for the mobility operation that makes things convenient for the driver and the safety traffic of guaranteeing automobile, the operation of automobile each several part is more and more to the operation integrated development.Mount message communication traffic on automobile, it can provide vehicle position information service, vehicle stolen and accident detection, remote vehicle diagnosis, emergency relief, traffic-information service and utilize the mobile office of wireless Internet and the function such as E-mail service.
Along with automotive engineering progressively when tipped, the fault that automobile occurs also presents variation, and therefore, vehicle failure detection technology and fault diagnosis technology are also just growing.At present, a plurality of electronic control units that can receive the induced signal that spreads out of from various sensors are housed all on the most automobile, obtain diagnostic trouble code etc. by electronic control unit.
The inventor finds to exist at least in the prior art following shortcoming and defect in realizing process of the present invention:
Although electronic control unit provides diagnostic trouble code, the field staff can't in time get access to detailed failure message and counter-measure, and automobile is keeped in repair; Even little fault also needs to keep in repair to maintenace point, increased user's cost, man power and material.
Summary of the invention
The invention provides a kind of fault diagnosis system for automobile, this system has realized timely automobile being keeped in repair, and has reduced user's cost, man power and material, sees for details hereinafter to describe:
A kind of fault diagnosis system for automobile, described fault diagnosis system comprises: with the electronic control unit of self-diagnostic function, described electronic control unit detects the running status of automobile in real time, obtains the corresponding diagnostic trouble code of malfunction and storage;
Described electronic control unit connects the CAN-USB transition card by automobile CAN-bus, and described CAN-USB transition card connects smart machine by the USB-OTG data line; Described smart machine reads described diagnostic trouble code, and judges whether request remote diagnosis;
If request, described smart machine is sent to the remote fault diagnosis server by wireless network with described diagnostic trouble code; Described remote fault diagnosis server receives described diagnostic trouble code, obtains the corresponding failure message of described diagnostic trouble code and counter-measure, and is sent to described smart machine by described wireless network;
If do not ask, described smart machine obtains the corresponding failure message of described diagnostic trouble code and counter-measure.
Behind Failure elimination, described smart machine is removed the diagnostic trouble code of storing in the described electronic control unit.
Described smart machine also sends to the mailbox of binding with described smart machine with described failure message and counter-measure.
Described remote fault diagnosis server and described smart machine are real-time carries out diagnostic data base online upgrading and software self online upgrading.
Described fault diagnosis system also comprises:
The data stream of obtaining each state parameter that described electronic control unit is real-time, described smart machine reads described data stream, and judges whether to ask long-range demarcation;
If request, described smart machine is sent to described remote fault diagnosis server by described wireless network with described data stream; Described remote fault diagnosis server receives described data stream and processes, obtain calibrated state parameter, and be sent to described smart machine by described wireless network, by described smart machine described calibrated state parameter is transferred to described electronic control unit;
If do not ask, described smart machine is processed described data stream, obtains described calibrated state parameter, and described calibrated state parameter is transferred to described electronic control unit.
The beneficial effect of technical scheme provided by the invention is: automobile driver or maintenance personal only need at smart machine the application software with diagnostic function to be installed and can diagnose vehicle trouble information anywhere or anytime, remove, and are used for the guiding vehicle maintenance; This system has carried out instructing timely to auto repair, has reduced user's cost, man power and material; The user need not to buy vehicle diagnosing apparatus, along with smart machine universal avoided a large amount of electronic product to the pollution of environment, has realized green, the theory of environmental protection.
Description of drawings
Fig. 1 is a kind of structural drawing of the fault diagnosis system for automobile;
Fig. 2 is the functional block diagram with smart machine of diagnostic function;
Fig. 3 is the functional block diagram of remote diagnosis server;
Fig. 4 is the workflow diagram of fault diagnosis system.
In the accompanying drawing, the list of parts of each label representative is as follows:
1: electronic control unit; The 2:CAN bus;
The 3:CAN-USB transition card; The 4:USB-OTG data line;
5: smart machine; 6: the remote fault diagnosis server.
Embodiment
For making the purpose, technical solutions and advantages of the present invention clearer, below embodiment of the present invention is described further in detail.
The electronic control unit 1 of installing on the automobile in the practical application has self-diagnostic function, whether the induced signal that receives by judgement has or not unusually, determine whether to exist fault, each fault that system can detect represents with corresponding diagnostic trouble code, the diagnostic trouble code state then represents the storage condition of fault etc., be mainly used in distinguishing sporadic fault, the continuation fault, historic fault and work as prior fault, diagnostic trouble code and diagnostic trouble code state are one to one, each diagnostic trouble code has a diagnostic trouble code state, should set up in advance the Address Mapping of diagnostic trouble code and diagnostic trouble code state in nonvolatile memory.When diagnostic device sent the diagnosis service order to electronic control unit 1, electronic control unit 1 was carried out corresponding service, returns corresponding failure message, with guide field maintenance personal's work.
Referring to Fig. 1, in order to realize timely automobile being keeped in repair, reduce user's cost, man power and material, the embodiment of the invention has proposed a kind of fault diagnosis system for automobile, this fault diagnosis system comprises: with the electronic control unit 1 of self-diagnostic function, electronic control unit 1 detects the running status of automobile in real time, obtains the corresponding diagnostic trouble code of malfunction and storage;
Electronic control unit 1 connects CAN-USB transition card 3 by automobile CAN-bus 2, and CAN-USB transition card 3 connects smart machine 5 by USB-OTG data line 4; Smart machine 5 read failure codes, and judge whether request remote diagnosis;
If request, smart machine 5 is sent to remote fault diagnosis server 6 by wireless network with diagnostic trouble code; Remote fault diagnosis server 6 receives diagnostic trouble code, obtains the corresponding failure message of diagnostic trouble code and counter-measure, and is sent to smart machine 5 by wireless network;
If do not ask, smart machine 5 obtains the corresponding failure message of diagnostic trouble code and counter-measure.
The user is according to the fault of the failure message that gets access in the smart machine 5 and counter-measure elimination automobile, and behind Failure elimination, smart machine 5 is removed the diagnostic trouble code of storage in the electronic control units 1.
Further, in order to make things convenient in the future looking up the fault information of user, this smart machine 5 also sends to failure message and counter-measure in the mailbox of binding with smart machine 5.
Wherein, smart machine 5 is generally the application software that mobile phone and PC etc. are equipped with diagnostic function, and this smart machine 5 can as the automobile fault diagnostic apparatus of special exploitation, carry out fault diagnosis to automobile.
Along with the accumulation of vehicle hour, and vehicle component is aging, and the fault that comes out can get more and more; Or along with the increase of vehicle and vehicle functions, the diagnostic trouble code of defined also can get more and more.Original database certainly will can not satisfy existing requirement, and therefore, diagnostic trouble code and diagnostic message etc. will redefine and expand.Therefore this remote fault diagnosis server 6 should have the update functions of diagnostic data base, the local diagnostic data base of smart machine 5 also will upgrade accordingly, and namely remote fault diagnosis server 6 and smart machine 5 can also be real-time carries out diagnostic data base online upgrading and software self online upgrading.
Further, for accurately get access in the process of moving each state parameter of automobile (such as: travel speeds etc.), this fault diagnosis system also comprises:
The data stream of obtaining each state parameter that electronic control unit 1 is real-time, smart machine 5 reading data flows, and judge whether to ask long-range demarcation;
If request, smart machine 5 is sent to remote fault diagnosis server 6 by wireless network with data stream; Remote fault diagnosis server 6 receiving data streams are also processed, and obtain calibrated state parameter, and are sent to smart machine 5 by wireless network, and smart machine 5 is transferred to electronic control unit 1 with calibrated state parameter;
If do not ask, 5 pairs of data streams of smart machine are processed, and obtain calibrated state parameter, and calibrated state parameter is transferred to electronic control unit 1.
Wherein, data stream is processed the process of obtaining calibrated state parameter, for conventionally known to one of skill in the art, the embodiment of the invention is not done at this and is given unnecessary details.
Below in conjunction with Fig. 2, Fig. 3 and Fig. 4, the principle of work of this fault diagnosis system is described in detail, see for details hereinafter:
Referring to Fig. 2, the smart machine 5 with diagnostic function comprises read failure code function, removing diagnostic trouble code function, local fault diagnosis functions, local calibrating function, request remote fault diagnosis function, asks long-range calibrating function, sends diagnostic message function, local diagnostic data base online upgrading function and software self online upgrading function to subscriber mailbox.The user is by being connected to smart machine 5 on the CAN bus 2 through CAN-USB transition card 3, and starts the application with diagnostic function and just can carry out fault diagnosis and demarcation to each electronic control unit 1 of automobile.Can sum up the workflow of each functional module with diagnostic function in conjunction with Fig. 4: after connecting line is connected, the user starts the diagnostic software on the smart machine 5, the diagnostic trouble code of this diagnostic software read electric control module 1, after smart machine 5 is received diagnostic trouble code, determine it is in local data base, to search for or in the remote fault diagnosis database, search for by the user, if in local data base, search for, then diagnostic message is presented on the smart machine 5; If request remote fault diagnosis function then first through wireless network diagnostic trouble code is sent to remote fault diagnosis server 6, remote fault diagnosis server 6 will be searched for corresponding detailed diagnostics information and counter-measure in database, and return to smart machine 5 through wireless network, smart machine 5 is presented on the screen diagnostic message and counter-measure for reference, this smart machine 5 sends to diagnostic message and counter-measure in the mailbox of smart machine 5 bindings automatically simultaneously, after the fault clearance of user with automobile, 5 of smart machines are removed the diagnostic trouble code in electronic control unit 1 storer.
Wherein, local calibrating function and long-range calibrating function and local fault diagnosis and remote fault diagnosis are similar, and the embodiment of the invention is not done at this and given unnecessary details.
Remote fault diagnosis server 6 comprises remote fault diagnosis function, long-range calibrating function, diagnostic data base AKU function is provided, the update functions of application software upgrade packet function and diagnostic data base is provided.Smart machine 5 requests will send to remote fault diagnosis server 6 by wireless network with diagnostic trouble code when carrying out remote fault diagnosis, remote fault diagnosis database 6 is searched in database, and the diagnostic message corresponding with this diagnostic trouble code sent to smart machine 5 through wireless network.The long-range timing signal of smart machine 5 requests, the data stream of state parameter is sent to remote fault diagnosis server 6 through wireless network, 6 pairs of state parameters of remote fault diagnosis server are demarcated, and calibrated state parameter transferred to smart machine 5, get access to accurate state parameter, and this calibrated state parameter is returned to electronic control unit 1.
It will be appreciated by those skilled in the art that accompanying drawing is the synoptic diagram of a preferred embodiment, the invention described above embodiment sequence number does not represent the quality of embodiment just to description.
The above only is preferred embodiment of the present invention, and is in order to limit the present invention, within the spirit and principles in the present invention not all, any modification of doing, is equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (5)
1. fault diagnosis system that is used for automobile, described fault diagnosis system comprises: with the electronic control unit of self-diagnostic function, described electronic control unit detects the running status of automobile in real time, obtains the corresponding diagnostic trouble code of malfunction and storage; It is characterized in that,
Described electronic control unit connects the CAN-USB transition card by automobile CAN-bus, and described CAN-USB transition card connects smart machine by the USB-OTG data line; Described smart machine reads described diagnostic trouble code, and judges whether request remote diagnosis;
If request, described smart machine is sent to the remote fault diagnosis server by wireless network with described diagnostic trouble code; Described remote fault diagnosis server receives described diagnostic trouble code, obtains the corresponding failure message of described diagnostic trouble code and counter-measure, and is sent to described smart machine by described wireless network;
If do not ask, described smart machine obtains the corresponding failure message of described diagnostic trouble code and counter-measure.
2. a kind of fault diagnosis system for automobile according to claim 1 is characterized in that, behind Failure elimination, described smart machine is removed the diagnostic trouble code of storing in the described electronic control unit.
3. a kind of fault diagnosis system for automobile according to claim 1 and 2 is characterized in that, described smart machine also sends to the mailbox of binding with described smart machine with described failure message and counter-measure.
4. a kind of fault diagnosis system for automobile according to claim 1 and 2 is characterized in that, described remote fault diagnosis server and described smart machine are real-time carries out diagnostic data base online upgrading and software self online upgrading.
5. a kind of fault diagnosis system for automobile according to claim 1 and 2 is characterized in that described fault diagnosis system also comprises:
The data stream of obtaining each state parameter that described electronic control unit is real-time, described smart machine reads described data stream, and judges whether to ask long-range demarcation;
If request, described smart machine is sent to described remote fault diagnosis server by described wireless network with described data stream; Described remote fault diagnosis server receives described data stream and processes, obtain calibrated state parameter, and be sent to described smart machine by described wireless network, by described smart machine described calibrated state parameter is transferred to described electronic control unit;
If do not ask, described smart machine is processed described data stream, obtains described calibrated state parameter, and described calibrated state parameter is transferred to described electronic control unit.
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| CN2012105572525A CN103019232A (en) | 2012-12-18 | 2012-12-18 | Fault diagnosis system for automobiles |
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| CN2012105572525A CN103019232A (en) | 2012-12-18 | 2012-12-18 | Fault diagnosis system for automobiles |
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| CN103200268A (en) * | 2013-04-11 | 2013-07-10 | 山东大学 | System and method for remote control, upgrading and standardization of electric vehicle |
| CN103279120A (en) * | 2013-05-09 | 2013-09-04 | 三一矿机有限公司 | Portable data collection and diagnosis device and mechanical vehicle |
| CN103576675A (en) * | 2013-11-07 | 2014-02-12 | 深圳市元征科技股份有限公司 | Automobile maintenance guide system and implementation method based on automobile diagnosis equipment |
| CN103699120A (en) * | 2013-12-25 | 2014-04-02 | 北京航天测控技术有限公司 | Fault diagnosis system for special vehicle |
| CN104175979A (en) * | 2013-05-23 | 2014-12-03 | 大陆汽车投资（上海）有限公司 | Method for guiding user to solve vehicle failure |
| CN104301405A (en) * | 2014-09-30 | 2015-01-21 | 安徽江淮汽车股份有限公司 | Vehicle diagnostic method, module and system |
| CN104460644A (en) * | 2013-09-25 | 2015-03-25 | 比亚迪股份有限公司 | Vehicle fault solution method and device |
| CN104579800A (en) * | 2015-02-10 | 2015-04-29 | 北京全路通信信号研究设计院有限公司 | Communication method of diagnosis maintenance terminal and vehicle-mounted host and diagnosis maintenance system |
| CN104554090A (en) * | 2014-12-29 | 2015-04-29 | 天津清源电动车辆有限责任公司 | Calibration system for vehicle controller of electric vehicle |
| CN104753967A (en) * | 2013-12-25 | 2015-07-01 | 惠州市德赛西威汽车电子有限公司 | Vehicle-mounted multimedia equipment fault feedback system and method |
| CN104850114A (en) * | 2014-12-19 | 2015-08-19 | 北汽福田汽车股份有限公司 | Vehicle failure analyzing method and system |
| CN105022381A (en) * | 2014-04-24 | 2015-11-04 | 广西金奔腾汽车科技有限公司 | Application technology related to data flow callback function |
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| CN105446311A (en) * | 2014-08-25 | 2016-03-30 | 苏州俊峰伟业信息技术有限公司 | Method and system for analyzing and diagnosing automobile fault |
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| CN108845506A (en) * | 2018-08-31 | 2018-11-20 | 深圳市路畅科技股份有限公司 | A kind of diagnostic method of vehicle failure, device and equipment |
| CN109213113A (en) * | 2017-07-04 | 2019-01-15 | 百度在线网络技术（北京）有限公司 | Vehicular diagnostic method and system |
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| CN111443691A (en) * | 2020-05-26 | 2020-07-24 | 江铃汽车股份有限公司 | Intelligent online diagnosis method and device for automobile |
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| CN103279120A (en) * | 2013-05-09 | 2013-09-04 | 三一矿机有限公司 | Portable data collection and diagnosis device and mechanical vehicle |
| CN104175979A (en) * | 2013-05-23 | 2014-12-03 | 大陆汽车投资（上海）有限公司 | Method for guiding user to solve vehicle failure |
| CN104460644A (en) * | 2013-09-25 | 2015-03-25 | 比亚迪股份有限公司 | Vehicle fault solution method and device |
| CN103576675A (en) * | 2013-11-07 | 2014-02-12 | 深圳市元征科技股份有限公司 | Automobile maintenance guide system and implementation method based on automobile diagnosis equipment |
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| CN105446311A (en) * | 2014-08-25 | 2016-03-30 | 苏州俊峰伟业信息技术有限公司 | Method and system for analyzing and diagnosing automobile fault |
| CN104301405A (en) * | 2014-09-30 | 2015-01-21 | 安徽江淮汽车股份有限公司 | Vehicle diagnostic method, module and system |
| CN104850114A (en) * | 2014-12-19 | 2015-08-19 | 北汽福田汽车股份有限公司 | Vehicle failure analyzing method and system |
| CN104554090A (en) * | 2014-12-29 | 2015-04-29 | 天津清源电动车辆有限责任公司 | Calibration system for vehicle controller of electric vehicle |
| CN104579800A (en) * | 2015-02-10 | 2015-04-29 | 北京全路通信信号研究设计院有限公司 | Communication method of diagnosis maintenance terminal and vehicle-mounted host and diagnosis maintenance system |
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| CN106444718A (en) * | 2016-11-02 | 2017-02-22 | 天津市捷威动力工业有限公司 | BMS remote software upgrading and fault diagnosis method as well as diagnosis maintenance system |
| CN109213113A (en) * | 2017-07-04 | 2019-01-15 | 百度在线网络技术（北京）有限公司 | Vehicular diagnostic method and system |
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| CN108415410A (en) * | 2018-03-19 | 2018-08-17 | 商丘师范学院 | A kind of vehicle fault diagnosis system and diagnostic method |
| CN109240222A (en) * | 2018-08-09 | 2019-01-18 | 东风特汽（十堰）专用车有限公司 | Car fault diagnosis method, system and its intelligent diagnostics server end |
| CN108845506A (en) * | 2018-08-31 | 2018-11-20 | 深圳市路畅科技股份有限公司 | A kind of diagnostic method of vehicle failure, device and equipment |
| CN111679647A (en) * | 2020-05-06 | 2020-09-18 | 一汽奔腾轿车有限公司 | Vehicle type code automatic matching calibration data based flashing system and method |
| CN111443691A (en) * | 2020-05-26 | 2020-07-24 | 江铃汽车股份有限公司 | Intelligent online diagnosis method and device for automobile |
| CN112286710A (en) * | 2020-11-03 | 2021-01-29 | 深圳市云伽智能技术有限公司 | Fault processing method, device, equipment and storage medium of ADAS system |
| CN112407326A (en) * | 2020-11-13 | 2021-02-26 | 深圳市领峰电动智能科技有限公司 | Unmanned aerial vehicle system fault diagnosis method and device, electronic equipment and storage medium |
| CN113342430A (en) * | 2021-06-10 | 2021-09-03 | 深圳市元征软件开发有限公司 | Fault code processing method and device, terminal equipment and readable storage medium |
| CN113581100A (en) * | 2021-07-22 | 2021-11-02 | 奇瑞汽车股份有限公司 | Prompting method and device for position calibration mode and computer storage medium |
| CN117234191A (en) * | 2023-11-08 | 2023-12-15 | 徐州徐工汽车制造有限公司 | Fault diagnosis method, device and computer readable storage medium |
| CN117234191B (en) * | 2023-11-08 | 2024-02-06 | 徐州徐工汽车制造有限公司 | Fault diagnosis method, device and computer readable storage medium |
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Application publication date: 20130403 |