CN104977170A - Vehicle fault remote diagnosis system and control method thereof - Google Patents
Vehicle fault remote diagnosis system and control method thereof Download PDFInfo
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- CN104977170A CN104977170A CN201510340454.8A CN201510340454A CN104977170A CN 104977170 A CN104977170 A CN 104977170A CN 201510340454 A CN201510340454 A CN 201510340454A CN 104977170 A CN104977170 A CN 104977170A
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Abstract
The invention relates to the technical field of vehicle electronic wireless communication, and especially relates to a vehicle fault remote diagnosis system. The vehicle fault remote diagnosis system comprises a vehicle-borne terminal, a vehicle bus, a vehicle controller, and a remote diagnosis background. The vehicle-borne terminal is used to judge whether diagnosis conditions are satisfied. After the diagnosis conditions are satisfied, the vehicle-borne terminal initiates a diagnosis request to the vehicle controller through the vehicle bus according to a diagnosis protocol and sequentially collects fault codes of the vehicle controller, the vehicle-borne terminal packages all the collected fault code information and sends the fault code information to the remote diagnosis background through a wireless communication module, and the remote diagnosis background analyzes and judges the received information and returns a diagnosis report to the vehicle-borne terminal or a mobile terminal used by a user for display. The invention further discloses a control method of the system. Through the remote diagnosis technology, already occurred and potential danger can be found in time, the timeliness and accuracy of fault diagnosis are ensured, and the manpower and material costs are reduced greatly.
Description
Technical field
The present invention relates to automotive electronics wireless communication technique field, particularly a kind of vehicle failure remote diagnosis system and control method thereof.
Background technology
Along with developing rapidly of auto industry, present electron controls technology has penetrated into each ingredient of automobile, and performance and the comfortableness of automobile are greatly improved.But the structure of automobile also becomes and becomes increasingly complex, and automaticity is also more and more higher, makes the electronic control system of car load become and becomes increasingly complex simultaneously.Therefore, the diagnosis and elimination of breakdown of automobile becomes an important technical requirement and safety guarantee.
Car fault diagnosis traditional at present adopts depot to specify the failure diagnostic apparatus of exploitation to be connected in the special OBD-II diagnostics port of vehicle, carries out fault diagnosis and investigation by professional and technical personnel's manual operation.The vehicle diagnostics of this mode has higher professional technique and requires (generally carrying out in after-sale service department operating and controlling), and the diagnostic equipment construction cycle is long, costly, simultaneously because this side is off-line operation, the promptness of car fault diagnosis cannot be protected.
Summary of the invention
Primary and foremost purpose of the present invention is to provide a kind of vehicle failure remote diagnosis system, ensures promptness and the accuracy of car fault diagnosis.
For realizing above object, the technical solution used in the present invention is: a kind of vehicle failure remote diagnosis system, comprise car-mounted terminal, car internal bus, car internal controller and remote diagnosis backstage, described car-mounted terminal is used for judging whether to meet conditions for diagnostics, after meeting conditions for diagnostics, car-mounted terminal initiates to car internal controller the diagnostic trouble code that collecting cart internal controller is successively asked also in diagnosis by car internal bus according to diagnosing protocol, the all fault code indications collected of car-mounted terminal packing are also sent to remote diagnosis backstage by wireless communication module, remote diagnosis backstage is resolved the information received and is back to by diagnosis report after judging on mobile terminal that car-mounted terminal or user use and shows.
Compared with prior art, there is following technique effect in the present invention: passes through remote Diagnosis Technology, vehicle diagnosis is made to find that the fault progression occurred is can carry out continual monitoring to every technical data of car load from analyzing, Timeliness coverage is that occurred with potential hidden danger, and inform driver or after sale service personnel timely, ensure promptness and the accuracy of fault diagnosis; Meanwhile, owing to no longer being diagnosed by the failure diagnostic apparatus of specifying, manpower and materials cost is greatly reduced.
Another object of the present invention is the control method providing a kind of vehicle failure remote diagnosis system, ensures promptness and the accuracy of car fault diagnosis.
For realizing above object, the technical solution used in the present invention is: a kind of control method of vehicle failure remote diagnosis system, comprises the steps: that (A) car-mounted terminal judges whether to meet conditions for diagnostics, if meet conditions for diagnostics, perform step B, otherwise repeat steps A; (B) car-mounted terminal according to diagnosing protocol by car internal bus to car internal controller initiate diagnosis request, and the diagnostic trouble code of collecting cart internal controller, pack all collect fault code indications, be sent to remote diagnosis backstage by wireless communication module; (C) remote diagnosis backstage resolve fault code information feed back to user.
Compared with prior art, there is following technique effect in the present invention: passes through remote Diagnosis Technology, vehicle diagnosis is made to find that the fault progression occurred is can carry out continual monitoring to every technical data of car load from analyzing, Timeliness coverage is that occurred with potential hidden danger, and inform driver or after sale service personnel timely, ensure promptness and the accuracy of fault diagnosis; Meanwhile, owing to no longer being diagnosed by the failure diagnostic apparatus of specifying, manpower and materials cost is greatly reduced.
Accompanying drawing explanation
Fig. 1 is theory diagram of the present invention;
Fig. 2 is automatic diagnosis process flow diagram of the present invention;
Fig. 3 is Troubleshooting Flowchart of the present invention;
Fig. 4 is the active diagnosing process flow diagram that the present invention is based on mobile terminal;
Fig. 5 is the active diagnosing process flow diagram that the present invention is based on car-mounted terminal.
Embodiment
Below in conjunction with Fig. 1 to Fig. 5, the present invention is described in further detail.
Consult Fig. 1, a kind of vehicle failure remote diagnosis system, comprise car-mounted terminal 10, car internal bus 20, car internal controller 30 and remote diagnosis backstage 40, described car-mounted terminal 10 meets conditions for diagnostics for judging whether, after meeting conditions for diagnostics, car-mounted terminal 10 initiates to car internal controller 30 diagnostic trouble code that collecting cart internal controller 30 is successively asked also in diagnosis by car internal bus 20 according to diagnosing protocol, the abbreviation of diagnostic trouble code and DTC, abbreviation is all adopted to represent in figure, car-mounted terminal 10 is packed all fault code indications of collecting be sent to remote diagnosis backstage 40 by wireless communication module 11, display on mobile terminal 50 that car-mounted terminal 10 or user use is resolved and is back to by diagnosis report after judging on remote diagnosis backstage 40 to the information received.By arranging remote diagnosis backstage 40, the diagnostic trouble code collected transfers on remote diagnosis backstage 40 by wireless communication module 11 by car-mounted terminal 10, can carry out long-range fault diagnosis so whenever and wherever possible to vehicle, ensures the ageing of diagnosis.Meanwhile, due to diagnostic trouble code parsing, process all carry out on remote diagnosis backstage 40, so just without the need to carrying out fault diagnosis and investigation by professional and technical personnel's manual operation, greatly reduce human and material resources cost.Car internal controller 30 has a lot, include but not limited to the conventional controller shown in figure of the present embodiment, EPS and electric boosting steering system in figure, TCU and automatic gear-box control module, EMS and engine management unit, IMMO and anti-theft locking system of engine, ABS and anti-lock braking system.
Preferably, described car-mounted terminal 10 comprises micro-control unit 12, bus controller 13, bus transceiver 14; Described micro-control unit 12 is responsible for steering logic and the strategy process of car-mounted terminal 10; Bus controller 13 for will the data of transmission be needed to convert protocol data-flow to according to corresponding frame format and coded system, or be resolved the data stream received; Bus transceiver 14 is interfaces of bus controller 13 and car internal bus 20.By arranging micro-control unit 12, can process steering logic and strategy, improving the applicability of system.Bus controller 13 and bus transceiver 14 facilitate the transmission of data.
As preferred version of the present invention, described car-mounted terminal 10 comprises fire wall 15, storer 16, power management module 17, standby power supply 18; Fire wall 15 is responsible for the detection of diagnosis control signal, restriction and filtration, prevents the illegal network information from entering into system in car; Storer 16 is for the storage of vehicle and car-mounted terminal 10 information; Power management module 17 is responsible for the power supply processing logic of car-mounted terminal 10 inside, and standby power supply 18 is under emergency conditions for car-mounted terminal 10 provides power supply.Because vehicle carries out exchanges data by wireless communication module 11 and remote diagnosis backstage 40, the invasion of invalid information on network, is provided with fire wall 15 here, ensures the safety of data transmission.Meanwhile, the setting of power management module 17 and standby power supply 18, can ensure the reliably working of this device.
Preferably, described car-mounted terminal 10 receives and after resolving diagnosis report, shows diagnosis report by car-mounted display module 60; Described mobile terminal 50 is mobile phone or dull and stereotyped or notebook computer, and in Fig. 1, described mobile terminal 50 is mobile phone.
Along with the development of computer technology and mobile communication technology, facilitate the constantly perfect of automobile failure diagnosis and self-diagnosis technology.Native system utilizes existing vehicle-mounted universal diagnostic agreement, mobile Internet is accessed by the built-in wireless communication module 11 of car-mounted terminal 10, not only in real time but also as required failure message can be sent to the remote diagnosis backstage 40 of specifying, 40 pairs, remote diagnosis backstage failure message carries out analyzing and processing, the most at last the fault diagnosis result managerial personnel that send to user or specify.Adopting this novel remote Diagnosis Technology, making vehicle diagnosis find that the fault progression that occurred is can carry out continual monitoring to every technical data of car load from analyzing, Timeliness coverage occurred with the fault diagnosis system of potential risk.
The invention also discloses a kind of control method of vehicle failure remote diagnosis system, comprise the steps: that (A) car-mounted terminal 10 judges whether to meet conditions for diagnostics, if meet conditions for diagnostics, perform step B, otherwise repeat steps A; (B) car-mounted terminal 10 according to diagnosing protocol by car internal bus 20 to car internal controller 30 initiate diagnosis request, and the diagnostic trouble code of collecting cart internal controller 30, pack all collect fault code indications, be sent to remote diagnosis backstage 40 by wireless communication module 11; (C) remote diagnosis backstage 40 resolve fault code information feed back to user.By this control method, the remote diagnosis of vehicle failure can be realized.Here fault code indications is necessary, and some vehicle not only can collect fault code indications, can also collect failure message, and fault code indications, failure message can be sent to remote diagnosis backstage 40 by this time simultaneously in the lump.Below according to the difference of conditions for diagnostics, give four kinds of concrete diagnostic process for reference:
Consult Fig. 2, comprise automatic diagnosis flow process, in automatic diagnosis flow process, car-mounted terminal 10 judges whether to meet conditions for diagnostics as follows: (A11) car-mounted terminal 10 monitors ignition signal, performs next step after receiving ignition signal, otherwise repeats steps A 11; (A12) whether diagnosis last time of car-mounted terminal 10 judging distance exceedes setting-up time t, if do not exceed, returns steps A 11, if exceed, performs next step; (A13) car-mounted terminal 10 judges that whether user is at use diagnostic equipment, if use, returns steps A 11, if do not use, performs next step; (A14) car-mounted terminal 10 judges whether transmitter starts, if do not start, returns steps A 11, if start, performs step B.Here the time t arranged prevents diagnosis too frequent.Feed back to user as follows in automatic diagnosis flow process: (C11) remote diagnosis backstage 40 judges whether diagnostic result exists fault, if there is not fault or there is fault but do not meet fault alarm condition, then store current information; (C12) if there is fault and meet fault alarm condition, then message is sent to mobile terminal 50 or car-mounted terminal 10.
Automatic diagnosis flow process, when each vehicle ignition, if meet the condition of specifying, just starts once to diagnose.So just can diagnose vehicle in the very first time, ensure the security that subsequent vehicle uses.In addition, forgetting the active diagnosing flow process addressed after carrying out to prevent user, the setting of automatic diagnosis flow process, can ensure all can once diagnose every one end time.
Consult Fig. 3, comprise fault diagnosis flow scheme, in fault diagnosis flow scheme, car-mounted terminal 20 judges whether to meet conditions for diagnostics as follows: (A21) car-mounted terminal 10 is by car internal bus monitoring network signal and judged whether alerting signal, if do not have, then repeat steps A 21 and continue monitoring, if there is alerting signal, perform next step; (A22) whether car-mounted terminal 10 judges whether this alerting signal is identical with alerting signal last time or is the part in alerting signal last time, if identical or be a part in alerting signal last time, perform next step, otherwise performs step B; (A23) whether diagnosis last time of car-mounted terminal 10 judging distance exceedes setting-up time t, if do not exceed, returns steps A 21, if exceed, performs step B.Feed back to user as follows in fault diagnosis flow scheme: (C21) remote diagnosis backstage 40 judges that whether the diagnostic trouble code collected is complete, if imperfect, perform step C22, if complete, perform step C23; (C22) remote diagnosis backstage 40 continues to judge whether the controller of the diagnostic trouble code do not collected comprises the controller producing alerting signal, if comprise, then sends message to mobile terminal 50 or car-mounted terminal 10, if do not comprise, then stores current information; (C23) remote diagnosis backstage 40 judges whether diagnostic result exists fault, if there is not fault or there is fault but do not meet fault alarm condition, then stores current information; (C24) if there is fault and meet fault alarm condition, then message is sent to mobile terminal 50 or car-mounted terminal 10.
Fault diagnosis flow scheme mainly when monitoring new alerting signal and producing, just starts to diagnose vehicle, to resolve concrete fault, informs user timely or fix a breakdown.
Consult Fig. 4, comprise the active diagnosing flow process based on mobile terminal, active diagnosing flow process based on mobile terminal judges whether to meet conditions for diagnostics as follows: (A31) user clicks the vehicle diagnostics button on mobile terminal 50, mobile terminal 50 judges whether user logs in, if do not log in, then needs to input user name and password, until input correctly login successfully after, perform next step, if log in, then directly perform next step; (A32), after logining successfully, mobile terminal 50 shows diagnosis and prompting interface is described, and have " current ", " history " two kinds of model selections; If user selects " current ", then enter next step, if user selects " history ", mobile terminal 50 obtains the last diagnostic result and shows from remote diagnosis backstage 40; (A33) car-mounted terminal 10 monitors ignition signal, performs next step after receiving ignition signal, otherwise repeats steps A 33; (A34) whether diagnosis last time of car-mounted terminal 10 judging distance exceedes setting-up time t, if do not exceed, returns steps A 33, if exceed, performs next step; (A35) car-mounted terminal 10 judges that whether user is at use diagnostic equipment, if use, returns steps A 33, if do not use, performs next step; (A36) car-mounted terminal 10 judges whether transmitter starts, if do not start, returns steps A 33, if start, performs step B.Active diagnosing flow process based on mobile terminal feeds back to user as follows: whether (C31) remote diagnosis backstage 40 failure judgement code resolves successful, if unsuccessful, then return miscue, if success, then on mobile terminal 50, show diagnosis report.It should be noted that in accompanying drawing 4 and limit by size, the step included by startup conditions for diagnostics braces in [starting to diagnose] the i.e. Fig. 2 in figure.
Along with the development of smart mobile phone, almost everyone has the smart mobile phone of 1 or more along with carrying now.Here based on the active diagnosing flow process of mobile terminal, user can be allowed to start the diagnosis to vehicle whenever and wherever possible by mobile terminal 50; Meanwhile, also by mobile terminal 50, former diagnostic message is checked.In the concrete steps of the present embodiment, only mention and obtain the last diagnostic result, but when practical application, in the past all diagnostic results can be stored, can check easily like this.
Consult Fig. 5, comprise the active diagnosing flow process based on car-mounted terminal, the active diagnosing flow process based on car-mounted terminal judges whether to meet conditions for diagnostics as follows: (A41) user is in car-mounted terminal 10 trigger remote diagnosis request; (A42) car-mounted terminal 10 monitors ignition signal, performs next step after receiving ignition signal, otherwise repeats steps A 42; (A43) whether diagnosis last time of car-mounted terminal 10 judging distance exceedes setting-up time t, if do not exceed, returns steps A 42, if exceed, performs next step; (A44) car-mounted terminal 10 judges that whether user is at use diagnostic equipment, if use, returns steps A 42, if do not use, performs next step; (A45) car-mounted terminal 10 judges whether transmitter starts, if do not start, returns steps A 42, if start, performs step B.Active diagnosing flow process based on car-mounted terminal feeds back to user as follows: whether (C31) remote diagnosis backstage 40 failure judgement code resolves successful, if unsuccessful, then return miscue, if success, car-mounted terminal 10 receives and after resolving diagnosis report, shows diagnosis report by car-mounted display module 60.
The last active diagnosing flow process based on car-mounted terminal is mainly used for user when driving on vehicle, opening the diagnosis to vehicle at any time, without the need to relying on other-end or condition, can open at any time, real can diagnose easily when reaching any.
By above-mentioned four diagnostic process, can ensure that user can start diagnosis whenever and wherever possible, can ensure again, when user forgets, independently to carry out fault diagnosis, fully ensure that the security that car internal controller 30 uses.
Claims (9)
1. a vehicle failure remote diagnosis system, it is characterized in that: comprise car-mounted terminal (10), car internal bus (20), car internal controller (30) and remote diagnosis backstage (40), described car-mounted terminal (10) meets conditions for diagnostics for judging whether, after meeting conditions for diagnostics, car-mounted terminal (10) initiates to car internal controller (30) diagnostic trouble code that collecting cart internal controller (30) is successively asked also in diagnosis by car internal bus (20) according to diagnosing protocol, car-mounted terminal (10) is packed all fault code indications of collecting be sent to remote diagnosis backstage (40) by wireless communication module (11), the upper display of mobile terminal (50) that car-mounted terminal (10) or user use is resolved and is back to by diagnosis report after judging on remote diagnosis backstage (40) to the information received.
2. vehicle failure remote diagnosis system as claimed in claim 1, is characterized in that: described car-mounted terminal (10) comprises micro-control unit (12), bus controller (13), bus transceiver (14); Described micro-control unit (12) is responsible for steering logic and the strategy process of car-mounted terminal (10); Bus controller (13) for will the data of transmission be needed to convert protocol data-flow to according to corresponding frame format and coded system, or be resolved the data stream received; Bus transceiver (14) is the interface of bus controller (13) and car internal bus (20).
3. vehicle failure remote diagnosis system as claimed in claim 1, is characterized in that: described car-mounted terminal (10) comprises fire wall (15), storer (16), power management module (17), standby power supply (18); Fire wall (15) is responsible for the detection of diagnosis control signal, restriction and filtration, prevents the illegal network information from entering into system in car; Storer (16) is for the storage of vehicle and car-mounted terminal (10) information; Power management module (17) is responsible for the inner power supply processing logic of car-mounted terminal (10), and standby power supply (18) is for providing power supply for car-mounted terminal (10) under emergency conditions.
4. vehicle failure remote diagnosis system as claimed in claim 1, is characterized in that: described car-mounted terminal (10) receives and after resolving diagnosis report, shows diagnosis report by car-mounted display module (60); Described mobile terminal (50) is mobile phone or dull and stereotyped or notebook computer.
5. a control method for vehicle failure remote diagnosis system, comprises the steps:
(A) car-mounted terminal (10) judges whether to meet conditions for diagnostics, if meet conditions for diagnostics, performs step B, otherwise repeats steps A;
(B) car-mounted terminal (10) according to diagnosing protocol by car internal bus (20) to car internal controller (30) initiate diagnosis request, and the diagnostic trouble code of collecting cart internal controller (30), pack all collect fault code indications, be sent to remote diagnosis backstage (40) by wireless communication module (11);
(C) remote diagnosis backstage (40) resolve fault code information feed back to user.
6. the control method of vehicle failure remote diagnosis system as claimed in claim 5, it is characterized in that: comprise automatic diagnosis flow process, in automatic diagnosis flow process, car-mounted terminal (10) judges whether to meet conditions for diagnostics as follows:
(A11) car-mounted terminal (10) monitors ignition signal, performs next step after receiving ignition signal, otherwise repeats steps A 11;
(A12) whether diagnosis last time of car-mounted terminal (10) judging distance exceedes setting-up time t, if do not exceed, returns steps A 11, if exceed, performs next step;
(A13) car-mounted terminal (10) judges that whether user is at use diagnostic equipment, if use, returns steps A 11, if do not use, performs next step;
(A14) car-mounted terminal (10) judges whether transmitter starts, if do not start, returns steps A 11, if start, performs step B;
User is fed back to as follows in automatic diagnosis flow process:
(C11) remote diagnosis backstage (40) judge whether diagnostic result exists fault, if there is not fault or there is fault but do not meet fault alarm condition, then store current information;
(C12) if there is fault and meet fault alarm condition, then message is sent to mobile terminal (50) or car-mounted terminal (10).
7. the control method of vehicle failure remote diagnosis system as claimed in claim 5, it is characterized in that: comprise fault diagnosis flow scheme, in fault diagnosis flow scheme, car-mounted terminal (20) judges whether to meet conditions for diagnostics as follows:
(A21) car-mounted terminal (10) has judged whether alerting signal by car internal bus monitoring network signal, if do not have, then repeats steps A 21 and continues monitoring, if there is alerting signal, perform next step;
(A22) whether car-mounted terminal (10) judges whether this alerting signal is identical with alerting signal last time or is the part in alerting signal last time, if identical or be a part in alerting signal last time, perform next step, otherwise perform step B;
(A23) whether diagnosis last time of car-mounted terminal (10) judging distance exceedes setting-up time t, if do not exceed, returns steps A 21, if exceed, performs step B;
User is fed back to as follows in fault diagnosis flow scheme:
(C21) remote diagnosis backstage (40) judge that whether the diagnostic trouble code collected is complete, if imperfect, perform step C22, if complete, perform step C23;
(C22) remote diagnosis backstage (40) continue to judge whether the controller of the diagnostic trouble code do not collected comprises the controller producing alerting signal, if comprise, then send message to mobile terminal (50) or car-mounted terminal (10), if do not comprise, then store current information;
(C23) remote diagnosis backstage (40) judge whether diagnostic result exists fault, if there is not fault or there is fault but do not meet fault alarm condition, then store current information;
(C24) if there is fault and meet fault alarm condition, then message is sent to mobile terminal (50) or car-mounted terminal (10).
8. the control method of vehicle failure remote diagnosis system as claimed in claim 5, it is characterized in that: comprise the active diagnosing flow process based on mobile terminal, the active diagnosing flow process based on mobile terminal judges whether to meet conditions for diagnostics as follows:
(A31) user clicks the vehicle diagnostics button on mobile terminal (50), mobile terminal (50) judges whether user logs in, if do not log in, then need to input user name and password, until input correctly login successfully after, perform next step, if log in, then directly perform next step;
(A32), after logining successfully, the upper display diagnosis of mobile terminal (50) illustrates prompting interface, and has " current ", " history " two kinds of model selections; If user selects " current ", then enter next step, if user selects " history ", mobile terminal (50) obtains the last diagnostic result from remote diagnosis backstage (40) and shows;
(A33) car-mounted terminal (10) monitors ignition signal, performs next step after receiving ignition signal, otherwise repeats steps A 33;
(A34) whether diagnosis last time of car-mounted terminal (10) judging distance exceedes setting-up time t, if do not exceed, returns steps A 33, if exceed, performs next step;
(A35) car-mounted terminal (10) judges that whether user is at use diagnostic equipment, if use, returns steps A 33, if do not use, performs next step;
(A36) car-mounted terminal (10) judges whether transmitter starts, if do not start, returns steps A 33, if start, performs step B;
Active diagnosing flow process based on mobile terminal feeds back to user as follows:
(C31) whether remote diagnosis backstage (40) failure judgement code resolves successful, if unsuccessful, then returns miscue, if success, then on mobile terminal (50), shows diagnosis report.
9. the control method of vehicle failure remote diagnosis system as claimed in claim 5, it is characterized in that: comprise the active diagnosing flow process based on car-mounted terminal, the active diagnosing flow process based on car-mounted terminal judges whether to meet conditions for diagnostics as follows:
(A41) user is in car-mounted terminal (10) trigger remote diagnosis request;
(A42) car-mounted terminal (10) monitors ignition signal, performs next step after receiving ignition signal, otherwise repeats steps A 42;
(A43) whether diagnosis last time of car-mounted terminal (10) judging distance exceedes setting-up time t, if do not exceed, returns steps A 42, if exceed, performs next step;
(A44) car-mounted terminal (10) judges that whether user is at use diagnostic equipment, if use, returns steps A 42, if do not use, performs next step;
(A45) car-mounted terminal (10) judges whether transmitter starts, if do not start, returns steps A 42, if start, performs step B;
Active diagnosing flow process based on car-mounted terminal feeds back to user as follows:
(C31) whether remote diagnosis backstage (40) failure judgement code resolves successful, if unsuccessful, then return miscue, if success, car-mounted terminal (10) receives and after resolving diagnosis report, by car-mounted display module (60) display diagnosis report.
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