CN205405253U - Vehicle failure detecting system based on on -vehicle CAN network - Google Patents
Vehicle failure detecting system based on on -vehicle CAN network Download PDFInfo
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- CN205405253U CN205405253U CN201620157684.0U CN201620157684U CN205405253U CN 205405253 U CN205405253 U CN 205405253U CN 201620157684 U CN201620157684 U CN 201620157684U CN 205405253 U CN205405253 U CN 205405253U
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Abstract
The utility model discloses a vehicle failure detecting system based on on -vehicle CAN network, include: CAN bus controller, CAN message transceiver, the computer of wired connection in proper order, perhaps still include the server. CAN bus controller include the singlechip and all with CAN communication circuit, storage card, battery that the singlechip is connected, CAN message transceiver includes the CAN communication circuit, singlechip, the computer communication interface that are connected interdependent time. The utility model discloses utilizing CAN bus processing apparatus and computer can real -time, continuous, automatic, timely, effectual vehicle failure to detect, can discovering fast and fault localization's source that reason and the solution method that the trouble probably takes place is seeked in help, the processing speed is fast, identification accuracy is high, safe and reliable, real -time are high, has saved a large amount of manpower and materials, practices thrift the cost.
Description
Technical field
This utility model relates to technical field of automotive electronics, particularly relates to a kind of vehicle fault detection system based on vehicle-mounted CAN network.
Background technology
Development along with automotive engineering, system on automobile also becomes to become increasingly complex, huge, so the probability producing fault is also increasing, the difficulty of investigation detection fault also can be more and more higher, especially in the epoch of this data explosion, one car all can produce the data of magnanimity all the time, therefrom filter out suitable data by manpower and determine whether that fault occurs and possible reason has become hardly possible, not only can waste the substantial amounts of time, and accuracy is not high yet, it is likely that can produce to omit to some tiny faults.And, during manual detection vehicle trouble, often tangible fault just goes the fault of investigation automobile when occurring, and the frequency that some faults occur is non-normally low, goes reproduction to require a great deal of time by manpower, and is difficult to detailed data when record trouble occurs and situation.
It is highly developed that current computer technology has also developed, the arithmetic speed of computer, by suitable programming, substantial amounts of manpower and materials can be saved, through substantial amounts of checking and accumulation, it is possible to improve speed and the accuracy of procedure identification fault greatly, it is possible to avoid the fault artificially caused.The more important thing is, what computer can be real-time is acquired fault and detects, it is also possible to the fault of multiple vehicles is detected simultaneously, and this is that manpower does not reach far away.
Present many vehicles are all use controller local area network (ControllerAreaNetwork, it is called for short CAN) carry out the transmission of data, CAN has concentrated the most of data required for tester, it is acquired without extra equipment, have only to know the data that car load communications protocol can collect needs, save substantial amounts of cost.
According to the problems referred to above, need now one badly and can pass through vehicle-mounted CAN network collection data and utilize computer to carry out data analyzing fast and accurately, processing, the vehicle fault detection system of fault, possible cause and solution that detection occurs.
Utility model content
In order to solve the problems referred to above, this utility model provides a kind of vehicle fault detection system based on vehicle-mounted CAN network.
This utility model provide a kind of vehicle fault detection system based on vehicle-mounted CAN network, including: successively the CAN controller of wired connection, CAN message transceiver, computer；
Described CAN controller includes single-chip microcomputer and the CAN communication circuit being all connected, storage card, battery with described single-chip microcomputer；
CAN communication circuit that described CAN message transceiver includes being connected successively mutually, single-chip microcomputer, Computer Communications Interface.
The above-mentioned vehicle fault detection system based on vehicle-mounted CAN network can also have the following characteristics that
Described CAN controller also includes the display lamp being connected with described single-chip microcomputer.
The above-mentioned vehicle fault detection system based on vehicle-mounted CAN network can also have the following characteristics that
Described CAN controller also includes the speaker being connected with described single-chip microcomputer.
The above-mentioned vehicle fault detection system based on vehicle-mounted CAN network can also have the following characteristics that
Described CAN controller also includes the display screen being connected with described single-chip microcomputer.
The above-mentioned vehicle fault detection system based on vehicle-mounted CAN network can also have the following characteristics that
Described CAN controller also includes the radio communication device being connected with single-chip microcomputer；
Described computer includes radio communication device.
The above-mentioned vehicle fault detection system based on vehicle-mounted CAN network can also have the following characteristics that
Described Computer Communications Interface is USB interface.
The another kind that this utility model provides based on the vehicle fault detection system of vehicle-mounted CAN network, comprising: successively the CAN controller of wired connection, CAN message transceiver, computer, server；
Described CAN controller includes single-chip microcomputer and the CAN communication circuit being all connected, storage card, battery with described single-chip microcomputer；
CAN communication circuit that described CAN message transceiver includes being connected successively mutually, single-chip microcomputer, Computer Communications Interface.
The above-mentioned vehicle fault detection system based on vehicle-mounted CAN network can also have the following characteristics that
Described CAN controller also includes at least one of the following device being connected with described single-chip microcomputer: display lamp, speaker, display screen, radio communication device.
The above-mentioned vehicle fault detection system based on vehicle-mounted CAN network can also have the following characteristics that
Described Computer Communications Interface is USB interface.
This utility model utilizes CAN to process device and computer can vehicle fault detection real-time, continuous, automatic, timely, effective, can quickly find and position the source of fault, help the contingent reason of looking up the fault and solution, processing speed is fast, recognition accuracy is high, safe and reliable, real-time is high, save a large amount of manpower and materials, save cost.
The beneficial effects of the utility model also include:
Vehicle-mounted data when fault is occurred by this utility model and the accident analysis data prestored are analyzed and fuzzy matching, so that it is determined that failure cause and solution, detection speed is fast, and accuracy is high, it is ensured that the effectiveness of fault detect.
CAN controller of the present utility model is while fault message real-time, that continuous print detects vehicle, the also detailed data recorded when fault occurs, even without connecting computer, data also can well be saved among memory module (such as SD RAM (random access memory) card), runs into the situations such as the unexpected power-off loss without concern of data.Inside CAN controller, there is power module, powered by power supply when normally working, power supply is powered by power module after electrically disconnected, it is possible to make fault detection system work on a period of time, ensure that the sight that can preserve when various fault occurs to the full extent.
Utilize vehicle-mounted CAN network, former car significantly need not be changed, have only to know car load communications protocol, simple and easy to use, being prone to expand, different vehicles has only to use different communications protocol to resolve, and meets the multiformity of vehicle, enable fault detection system depart from the restriction of vehicle platform equally, be applied to more occasion.
CAN message is undertaken resolving by Fault analytical agreement and changes by computer, 16 abstract binary data is converted to decimal scale and character string, is then shown by human-computer interaction interface.
Failed transmission agreement can carry out writing and formulation according to different vehicles, applied widely, it is possible to be applied in kinds of platform.
Data after computer analyzing can be displayed by human-computer interaction interface by modes such as form, text, figures, the display mode of data can also be manually set, it is thus possible to make user quickly navigate to data cases when fault occurs, and list failure cause possible in data base and solution, provide reference for attendant.
Computer can real-time transmission data, the continuous print detection data message of certain time also preserves, and the form of preservation has txt, xls, csv etc., convenient on different computers to the storage of data with check.Can set that the real-time calculating of multiple data during continuous detecting, such as calculate product or the summation of multiple data.
Accompanying drawing explanation
Fig. 1 is the structure chart of the vehicle fault detection system in embodiment one based on vehicle-mounted CAN network.
Fig. 2 is the structure chart of the vehicle fault detection system in embodiment two based on vehicle-mounted CAN network.
Specific embodiment
For making the purpose of this utility model embodiment, technical scheme and advantage clearly, below in conjunction with the accompanying drawing in this utility model embodiment, technical scheme in this utility model embodiment is clearly and completely described, obviously, described embodiment is a part of embodiment of this utility model, rather than whole embodiments.Based on the embodiment in this utility model, the every other embodiment that those of ordinary skill in the art obtain under not making creative work premise, broadly fall into the scope of this utility model protection.It should be noted that when not conflicting, the embodiment in the application and the feature in embodiment can combination in any mutually.
Embodiment one
Fig. 1 is the structure chart of the vehicle fault detection system in embodiment one based on vehicle-mounted CAN network.This vehicle fault detection system, including: successively the CAN controller of wired connection, CAN message transceiver, computer.
CAN controls module for receiving car load data from vehicle-mounted CAN network, and judge whether to break down according to car load data, when judging to break down, generate fault message, the car load data in fault message and preset period of time are sent to CAN message transceiver module by failed transmission agreement；
CAN message transceiver module receives data be forwarded to computer for controlling module from CAN；
In computer, storage has the accident analysis data prestored, computer is for receiving data from CAN message transceiver module, the information that is out of order according to failed transmission protocol analysis and car load data, determine the failure cause maximum with car load data association probability and the solution corresponding with this failure cause according to fault message and car load data and the accident analysis data that prestored.
CAN controller includes single-chip microcomputer and the CAN communication circuit being all connected, storage card, battery with described single-chip microcomputer；CAN communication circuit that CAN message transceiver includes being connected successively mutually, single-chip microcomputer, Computer Communications Interface.Wherein, CAN communication circuit is used for carrying out data communication, and single-chip microcomputer is used for carrying out data process.
For enabling CAN controller that fault to be reminded, CAN controller also includes the display lamp being connected with single-chip microcomputer, and single-chip microcomputer, when judging to break down, carries out light prompt by display lamp.
For enabling CAN controller that fault to be reminded, CAN controller also includes the speaker being connected with single-chip microcomputer, and single-chip microcomputer, when judging to break down, carries out auditory tone cues by speaker.
For enabling CAN controller that fault message to be pointed out, CAN controller also includes the display screen being connected with single-chip microcomputer, and single-chip microcomputer, when judging to break down, shows fault relevant information by display screen.
CAN controller also includes the radio communication device being connected with single-chip microcomputer；Computer includes radio communication device.When CAN message Transceiver fault, CAN controller wirelessly can also communicate with computer.
Computer Communications Interface is USB interface.
Embodiment two
Vehicle fault detection system based on vehicle-mounted CAN network includes: successively the CAN controller of wired connection, CAN message transceiver, computer, server.
The difference of embodiment one and embodiment two essentially consists in, the accident analysis data prestored in embodiment one are stored in computer, the accident analysis data prestored in embodiment two are stored in server, during computer operational failure analytical data, need to transfer from server.
Server is used for storing accident analysis data.
Computer is for according to fault message querying server, obtaining the accident analysis data corresponding with fault message.
In embodiment two, the server in server supports online retrieving function, it is also possible to off-line imports data to data base, has automatic backup function, it is possible to Manual arranging data, reduces the repeatability of data, reduces the volume of data base.Data base includes DTC, vehicle, system etc. for car load modules and sets up tables of data respectively, it is possible to carry out looking up the fault according to different demands, improves the rapidity of fault detect, purposiveness and accuracy.
Vehicle-mounted data when fault is occurred by this utility model and the accident analysis data prestored are analyzed and fuzzy matching, determining, by genetic algorithm, the data that association probability is maximum, so that it is determined that failure cause and solution, detection speed is fast, accuracy is high, it is ensured that the effectiveness of fault detect.
Scheme of the present utility model fully employs vehicle-mounted CAN network, former car significantly need not be changed when making this programme apply, have only to know car load communications protocol, simple and easy to use, being prone to expand, different vehicles has only to use different communications protocol to resolve, and meets the multiformity of vehicle, enable fault detection system depart from the restriction of vehicle platform equally, be applied to more occasion.
Below the scheme of embodiment one and embodiment two is described in detail.
In order to make this programme can be suitable for more vehicle, native system can formulate different faults analysis protocol according to different CAN communication agreements and vehicle, specifically include: computer determines failed transmission agreement according to the type (i.e. vehicle) of CAN communication agreement and car load data that CAN controls module use, sends the Protocol NOTIFY message of mark failed transmission agreement to CAN message transceiver module.CAN message transceiver module sends after receiving Protocol NOTIFY message to CAN control module.CAN uses above-mentioned failed transmission agreement to send fault message and car load data after controlling module reception Protocol NOTIFY message.By above-mentioned technical characteristic, this utility model can determine different failed transmission agreements according to the parameter (such as vehicle) of different CAN communication agreements and different car loads, applied widely, it is possible to be applied in kinds of platform.Failed transmission agreement follows CAN or J1939 communications protocol, and coded format is similar to DBC file.Failed transmission agreement is sorted out according to message and signal.A piece of news includes multiple signal, one signal is concurrently present in multiple message, message identifier is not reused in failed transmission agreement, signal is reused in failed transmission agreement, and each signal includes at least one in following parameter: name, start bit, length, scale factor, side-play amount, maximum, minima, unit, synopsis, remarks.
In order to the data transmission bauds making this programme is controlled, native system can be formulated different message transmission rates and baud rate, specifically include: computer determines baud rate according to car load data, it is to be determined to baud rate notify to CAN message transceiver module, and carry out data receiver according to above-mentioned baud rate.The baud rate notice received is controlled module to CAN by CAN message transceiver module, and carries out data transmit-receive according to above-mentioned baud rate.CAN control module carries out data transmission according to above-mentioned baud rate after knowing above-mentioned baud rate.Computer, CAN message transceiver module and CAN control module and support multiple baud rate.
In native system, the period of car load data can be arranged, a kind of typical mode is: control moment that module judges that fault occurs as time reference with CAN, from then on before time reference preset duration to the car load data in the period of preset duration after this time reference point.Wherein, preset duration can also be arranged, for instance preset duration is set to 10 seconds.
CAN controls module built-in terminal resistance (need not time can shield) by jumper cap, and internal single-chip microcomputer is responsible for processing error message, and transmitting-receiving speed is fast, the cable use twisted-pair shielded wire that is connected with vehicle and with magnet ring, capacity of resisting disturbance is strong.
CAN controls module and includes the memory module (such as SD RAM (random access memory) card) for storing data, internal memory is sufficiently large, make CAN controller while fault message real-time, that continuous print detects vehicle, the also detailed data recorded when fault occurs, even without connecting computer, data also can well be saved among memory module (such as SD RAM (random access memory) card), runs into the situations such as the unexpected power-off loss without concern of data.
CAN controls module and includes the power module for powering.Being powered by power supply when normally working, power supply is powered by power module after electrically disconnected, it is possible to make fault detection system work on a period of time, ensure that the sight that can preserve when various fault occurs to the full extent.
Computer includes upper computer module, is used for according to failed transmission protocol analysis data, and calculates the index parameter relevant to car load data in real time.Upper computer module can real-time transmission data, the continuous print detection data message of certain time also preserves, and the form of preservation has txt, xls, csv etc., convenient on different computers to the storage of data with check.Can set that the real-time calculating of multiple data during continuous detecting, such as calculate product or the summation of multiple data.
For making user inquire about the various data in native system easily, computer includes human-computer interaction module, and this human-computer interaction module is used for providing user interface, receives querying command and the query argument of user's input；Be additionally operable to by car load data graphically or the form of form show.CAN message is undertaken resolving by Fault analytical agreement and changes by computer, 16 abstract binary data is converted to decimal scale and character string, is then shown by human-computer interaction interface.Data after upper computer module parsing can be displayed by human-computer interaction interface by modes such as form, text, figures, the display mode of data can also be manually set, it is thus possible to make user quickly navigate to data cases when fault occurs, and list failure cause possible in data base and solution, provide reference for attendant.
Furthermore, it is necessary to illustrate, the specific embodiment described in this specification, the shape of its parts, be named title etc. can be different, and the above content described in this specification is only to this utility model structure example explanation.
Descriptions above can combine enforcement individually or in every way, and these variant are all within protection domain of the present utility model.
In this article, term " includes ", " comprising " or its any other variant are intended to comprising of nonexcludability, so that include the article of a series of key element or equipment not only includes those key elements, but also include other key elements being not expressly set out, or also include the key element intrinsic for this article or equipment.When there is no more restriction, statement " including ... " key element limited, it is not excluded that there is also other identical element in the article including key element or equipment.
This utility model only in order to the technical solution of the utility model to be described and unrestricted, has been described in detail by above example reference only to preferred embodiment.It will be understood by those within the art that, it is possible to the technical solution of the utility model is modified or equivalent replacement, without deviating from the spirit and scope of technical solutions of the utility model, all should be encompassed in the middle of right of the present utility model.
Claims (9)
1. the vehicle fault detection system based on vehicle-mounted CAN network, it is characterised in that including: successively the CAN controller of wired connection, CAN message transceiver, computer；
Described CAN controller includes single-chip microcomputer and the CAN communication circuit being all connected, storage card, battery with described single-chip microcomputer；
CAN communication circuit that described CAN message transceiver includes being connected successively mutually, single-chip microcomputer, Computer Communications Interface.
2. the vehicle fault detection system based on vehicle-mounted CAN network as claimed in claim 1, it is characterised in that
Described CAN controller also includes the display lamp being connected with described single-chip microcomputer.
3. the vehicle fault detection system based on vehicle-mounted CAN network as claimed in claim 1, it is characterised in that
Described CAN controller also includes the speaker being connected with described single-chip microcomputer.
4. the vehicle fault detection system based on vehicle-mounted CAN network as claimed in claim 1, it is characterised in that
Described CAN controller also includes the display screen being connected with described single-chip microcomputer.
5. the vehicle fault detection system based on vehicle-mounted CAN network as claimed in claim 1, it is characterised in that
Described CAN controller also includes the radio communication device being connected with single-chip microcomputer；
Described computer includes radio communication device.
6. the vehicle fault detection system based on vehicle-mounted CAN network as claimed in claim 1, it is characterised in that
Described Computer Communications Interface is USB interface.
7. the vehicle fault detection system based on vehicle-mounted CAN network, it is characterised in that including: successively the CAN controller of wired connection, CAN message transceiver, computer, server；
Described CAN controller includes single-chip microcomputer and the CAN communication circuit being all connected, storage card, battery with described single-chip microcomputer；
CAN communication circuit that described CAN message transceiver includes being connected successively mutually, single-chip microcomputer, Computer Communications Interface.
8. the vehicle fault detection system based on vehicle-mounted CAN network as claimed in claim 7, it is characterised in that
Described CAN controller also includes at least one of the following device being connected with described single-chip microcomputer: display lamp, speaker, display screen, radio communication device.
9. the vehicle fault detection system based on vehicle-mounted CAN network as claimed in claim 7, it is characterised in that
Described Computer Communications Interface is USB interface.
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| CN201620157684.0U CN205405253U (en) | 2016-03-01 | 2016-03-01 | Vehicle failure detecting system based on on -vehicle CAN network |
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| CN201620157684.0U CN205405253U (en) | 2016-03-01 | 2016-03-01 | Vehicle failure detecting system based on on -vehicle CAN network |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109866710A (en) * | 2019-02-18 | 2019-06-11 | 苏州工业园区职业技术学院 | A kind of In-vehicle networking abnormality detection system |
| CN109889482A (en) * | 2018-12-27 | 2019-06-14 | 北京理工大学 | A kind of vehicle protocol analytic method and system |
| CN111123094A (en) * | 2018-10-30 | 2020-05-08 | 重庆欧尼斯特机电有限公司 | Motor speed regulation and fault tester based on CAN communication |
| CN112083710A (en) * | 2020-09-04 | 2020-12-15 | 南京信息工程大学 | Vehicle-mounted network CAN bus node monitoring system and method |
| CN112264309A (en) * | 2020-09-30 | 2021-01-26 | 北京京东振世信息技术有限公司 | Package sorting method, server and storage medium |
| CN113485284A (en) * | 2021-06-07 | 2021-10-08 | 东风汽车集团股份有限公司 | Message data processing method, device, equipment and storage medium |
-
2016
- 2016-03-01 CN CN201620157684.0U patent/CN205405253U/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111123094A (en) * | 2018-10-30 | 2020-05-08 | 重庆欧尼斯特机电有限公司 | Motor speed regulation and fault tester based on CAN communication |
| CN109889482A (en) * | 2018-12-27 | 2019-06-14 | 北京理工大学 | A kind of vehicle protocol analytic method and system |
| CN109866710A (en) * | 2019-02-18 | 2019-06-11 | 苏州工业园区职业技术学院 | A kind of In-vehicle networking abnormality detection system |
| CN112083710A (en) * | 2020-09-04 | 2020-12-15 | 南京信息工程大学 | Vehicle-mounted network CAN bus node monitoring system and method |
| CN112264309A (en) * | 2020-09-30 | 2021-01-26 | 北京京东振世信息技术有限公司 | Package sorting method, server and storage medium |
| CN113485284A (en) * | 2021-06-07 | 2021-10-08 | 东风汽车集团股份有限公司 | Message data processing method, device, equipment and storage medium |
| CN113485284B (en) * | 2021-06-07 | 2023-04-07 | 岚图汽车科技有限公司 | Message data processing method, device, equipment and storage medium |
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Effective date of registration: 20211210 Address after: 475000 No. 166, north of 310 National Road, Wangtun Township, yuwangtai District, Kaifeng City, Henan Province Patentee after: Henan yuebo Hydrogen Power System Research Institute Co.,Ltd. Address before: 210019 4th floor, building 4, No. 18, Jiangdong Street, Jialing, Jianye District, Nanjing City, Jiangsu Province Patentee before: NANJING YUEBOO POWER SYSTEM Co.,Ltd. |