CN102736615A - Vehicle failure diagnosis method - Google Patents
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- CN102736615A CN102736615A CN2012100930321A CN201210093032A CN102736615A CN 102736615 A CN102736615 A CN 102736615A CN 2012100930321 A CN2012100930321 A CN 2012100930321A CN 201210093032 A CN201210093032 A CN 201210093032A CN 102736615 A CN102736615 A CN 102736615A
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Abstract
The invention relates to a vehicle failure diagnosis method comprising the following steps: step 1, providing an upper computer; step 2, providing a lower computer; step 3, carrying out communication connection on the lower computer and a diagnosis interface of a vehicle to be diagnosed; step 4, selecting a diagnosis mode; step 5, if a manual diagnostic mode is selected, inputting information of the vehicle to be diagnosed to the upper computer and then entering step 8; step 6, if an intelligent operation recognition mode in a one-key diagnosis mode is selected, automatically calling successful diagnostic records of a corresponding vehicle type from a first or a second storage module by using the upper computer and then entering step 8; step 7, if a VIN (vehicle identification number) code intelligent determination mode of the one-key diagnosis mode is selected, automatically calling corresponding successful diagnostic records from the first and the second storage modules after obtaining a VIN code of the vehicle to be diagnosed by using the upper computer and then entering the step 8; and step 8, analyzing operating parameters of the vehicle to be diagnosed by using a diagnosis module of the upper computer to obtain a diagnosis result of vehicle diagnosis.
Description
Technical field
The present invention relates to the automobile failure diagnosis field, relate in particular to a kind of automobile failure diagnosis method based on key diagnosis.
Background technology
Automobile is the most familiar, the modal vehicles of people, and it is bringing into play crucial effect in people's life.Although the automobile quality is different, and is various informative, they in use all various faults can occur inevitably, need in time to get rid of or repair.Development and progress of science and technology along with society; The design of automobile and production also increasing employing electronic technology, automatic technology and electronic computer technology; This makes the automaticity of automobile increasingly high on the one hand, and performance is more superior, and is more convenient to operate flexible; Also auto repair and detection are had higher requirement on the other hand, traditional hand monitoring and maintenance mode can not satisfy the maintenance needs of new automobile.
Be accompanied by the develop rapidly of automobile automatic control technology, adopt the system of computer control more and more, vehicle structure also becomes increasingly complex, and the fault diagnosis of automobile also becomes and becomes increasingly complex.Existing fault detection system for automobile provides the mode of menu mode guide, through to specifying informations relevant with automobile such as user's query manufacturer, vehicle, year money, systems, selects from level to level, operates, and realizes the purpose of automobile failure diagnosis.This menu mode go-ahead mode also provides a kind of accurate method of diagnosing, and is clear and definite because each item information of automobile is obtaining in inquiry step by step, thereby is the condition that provides the foundation of fault diagnosis accurately.
But, based on the fault detection system for automobile of menu mode guide, user's automobile major know-how to be had relatively high expectations, in the menu queries layer by layer, the information that has is comparatively specialized, needs the professional user just to understand this and how to select; And, different automobile vendors, menu queries also is not quite similar, and does not have unified menu information standard, the same meaning, on the different automobile types menu, the title of demonstration maybe be different.Under this situation, when a domestic consumer uses, will cause puzzlement, be difficult to select and operation.And many times, also can run into the situation of same type of vehicle of diagnosis, menu is layer by layer selected and repetitive operation, can cause the reduction of work efficiency.
Summary of the invention
The object of the present invention is to provide a kind of automobile failure diagnosis method; Simple, convenient, quick, also reached accurate diagnosis effect in the time of a foolproof key operation, simplify the operation of vehicle diagnosis; Need not the user and possess automobile major knowledge; Automatically the point of interruption of record diagnosis scanning process can continue to carry out diagnostic scan when diagnose next time from this point of interruption, increases work efficiency.
For realizing above-mentioned purpose, the automobile failure diagnosis method that the present invention improves may further comprise the steps:
Step 4, selection diagnostic mode, the diagnostic mode of the diagnostic module of this host computer comprises a manual diagnostic mode and a key diagnostic mode, a said key diagnostic mode comprises intelligence operation recognition mode and VIN sign indicating number intelligent distinguishing pattern; When not storing this follow-up in first, second memory module when cutting steam successful idagnostic logout and the automobile VIN sign indicating number of car, can only select manual diagnostic mode; When storing this follow-up in first, second memory module when cutting steam the successful idagnostic logout of car, can select the intelligence operation recognition mode in a manual diagnostic mode or the key diagnostic mode; When storing this follow-up in first, second memory module when cutting steam the automobile VIN sign indicating number of car, can select the VIN sign indicating number intelligent distinguishing pattern in a manual diagnostic mode or the key diagnostic mode;
If step 5 is selected manual diagnostic mode; The user is in the host computer input follow-up car information of cutting steam; Host computer is cut steam car information transmission instruction to slave computer according to this follow-up; Slave computer reads the follow-up car operational factor of cutting steam through diagnose interface, and the data processing unit of slave computer sends the follow-up car operational factor of cutting steam the diagnostic module of host computer to, gets into step 8 then;
If step 6 is selected the intelligence operation recognition mode in the key diagnostic mode; Host computer accesses the successful idagnostic logout of corresponding vehicle automatically from first or second memory module; Host computer is imported the follow-up car information of cutting steam automatically according to this success idagnostic logout; Host computer is cut steam car information transmission instruction to slave computer according to this follow-up; Slave computer reads the follow-up car operational factor of cutting steam through diagnose interface, and the data processing unit of slave computer sends the follow-up car operational factor of cutting steam the diagnostic module of host computer to, gets into step 8 then;
If step 7 is selected the VIN sign indicating number intelligent distinguishing pattern in the key diagnostic mode; Then host computer obtains this follow-up and cuts steam behind the VIN sign indicating number of car; Automatically from first, second memory module, access corresponding successful idagnostic logout; Host computer is imported the follow-up car information of cutting steam automatically according to this success idagnostic logout, and host computer sends instruction and gives slave computer according to this follow-up car information of cutting steam, and slave computer reads the follow-up car operational factor of cutting steam through diagnose interface; The data processing unit of slave computer sends the follow-up car operational factor of cutting steam the diagnostic module of host computer to, gets into step 8 then;
Said second memory module also is used for being stored in the diagnostic scan process because user intervention and the point of interruption information of interrupt scanning.
In the said step 4, the diagnostic mode of diagnostic module also comprises intelligent scanning breakpoint memory pattern.
Said intelligent scanning breakpoint memory pattern is that slave computer scans whether there is point of interruption information in second memory module, if there is point of interruption information, then begins to continue scanning from this point of interruption, if there is not point of interruption information, then carries out total system scanning.
Said host computer establishes a communications link through usb data bus and slave computer.
Said host computer establishes a communications link through bluetooth and slave computer.
The working power of said slave computer is provided by diagnose interface, and the working power of host computer is from automobile storage battery or external power source.
Said diagnose interface is an OBDII standard diagnostics interface.
Said slave computer is connected with diagnose interface through the OBDII-16 communication interface.
Beneficial effect of the present invention: automobile failure diagnosis method provided by the invention, the previous successful idagnostic logout of accomplishing of this upper and lower computer of memory module storage through in upper and lower computer, being provided with is during the similar vehicle of follow-up diagnosis; From memory module, call corresponding successful idagnostic logout and accomplish the cut steam functional diagnosis of car of follow-up; Simple, convenient, quick, simplify the operation of vehicle diagnosis, also reached accurate diagnosis effect in the time of a foolproof key operation; Need not the user and possess automobile major knowledge; This equipment is the point of interruption of automatic record diagnosis scanning process also, can continue to carry out diagnostic scan from this point of interruption when diagnose next time, increases work efficiency.
In order further to understand characteristic of the present invention and technology contents, see also following about detailed description of the present invention and accompanying drawing, yet accompanying drawing only provide reference and the explanation usefulness, be not to be used for the present invention is limited.
Description of drawings
Below in conjunction with accompanying drawing, describe in detail through specific embodiments of the invention, will make technical scheme of the present invention and other beneficial effect obvious.
In the accompanying drawing,
Fig. 1 is the schematic flow sheet of automobile failure diagnosis method of the present invention;
Fig. 2 is for realizing the EM equipment module synoptic diagram of automobile failure diagnosis method of the present invention;
Fig. 3 is the internal module synoptic diagram of slave computer body among Fig. 2;
Fig. 4 is for realizing the another EM equipment module synoptic diagram of automobile failure diagnosis method of the present invention.
Embodiment
Technological means and the effect thereof taked for further setting forth the present invention are described in detail below in conjunction with the preferred embodiments of the present invention and accompanying drawing thereof.
See also Fig. 1 to 4, automobile failure diagnosis method provided by the invention, it may further comprise the steps:
The diagnostic module 14 of said host computer 10 comprises the application software of system software and a plurality of difference in functionalitys, and this host computer 10 provides display interface to the user, accomplishes user interactions and information display function.
Further, host computer body 12 systems also comprise: public module, communication protocol module, data analysis processing module, and control command/data acquisition module (all not shown).The working power of said host computer 10 is from automobile storage battery or external power source.
See also Fig. 3; Said slave computer body 22 also comprises communication interface module 23 and the diagnosis communication interface 25 that electrically connects with this data processing unit 24; The diagnose interface 30 that said slave computer 20 is cut steam on the car through this diagnosis communication interface 25 and follow-up is connected; These several communication interface modules 23 comprise CAN communication module 232, K_Line communication module 233, reach PWM/VPW communication module 234; These several communication interface modules 23 all electrically connect with data processing unit 24; Also be connected with a logic between K_Line communication module 233 and the data processing unit 24 respectively and select module 235, reach level selection module 236, the data processing unit 24 of said slave computer 20 is a main control unit, functions such as completion logic selection, IO selection, level control and communication protocol; Further; This communication interface module 23 comprises that also IO selects module 237; This IO select module 237 respectively with CAN communication module 232, K_Line communication module 233, PWM/VPW communication module 234, and diagnosis communication interface 25 electrically connect; Said the 2nd USB/ bluetooth communication module 28 is used to realize that slave computer 20 is connected (as shown in Figure 2) or bluetooth and connects (as shown in Figure 4) with the USB of host computer 10; Said logic select module 235 realize K_Line communication modules 233 just/the negative level logic selects; The module 236 of selecting said level realizes the communication level selection of K_Line communication module 233, and said CAN communication module 232 is realized SAE/J1939 agreement diagnostic functions, and said K_Line communication module 233 is realized ISO9141-2, KWP2000, BOSCH agreement diagnostic function; Said PWM/VPW communication module 234 is realized SAEJ1850PWM/VPW agreement diagnostic function, and said IO selects module 237 to realize the selection of diagnosis communication input and output pin.This diagnosis communication interface 25 is the OBDII-16 communication interface, is used for being connected with automobile OBDII standard diagnostics interface 30.This OBDII-16 communication interface one end also electrically connects with data processing unit 24, and said second memory module 26 is electrically connected at this data processing unit 24.
Said upper and lower machine 10,20 establishes a communications link through usb data bus 102 and first, a USB/ bluetooth communication 18,28; So be not limited thereto; Upper and lower machine 10,20 also can establish a communications link through the Bluetooth function in first, second USB/ bluetooth communication 18,28; This has just saved usb data bus 102, and more convenient operation is simple.
Said host computer 10 is selected slave computer 20 transmitting control commands according to the user, and control slave computer 20 is accomplished the automobile failure diagnosis task.The system software of said host computer 10 is the Windows/WinCE system software, is responsible for mutual, interface display and to the Communication Control of slave computer 20.Include USB in this Windows/WinCE system software and drive, slave computer 20 can drive to utilize between usb data bus 102 and the host computer 10 and carry out exchanges data through this USB.Application software is based on the operation down of this Windows/WinCE system software environment, and this application software comprises a vehicle diagnosis software and other vehicle diagnosis popular software.
Said diagnostic software comprises: a key diagnostic routine, manual diagnostic routine, download program of lower computer, Read fault sign indicating number information programme, clear DTC information programme, time data stream information programme, motion test program, FLASH ECU program, other diagnostic function program, intelligence operation recognizer, VIN sign indicating number intelligent distinguishing program and intelligent scanning breakpoint memory program.Can accomplish the upgrading of slave computer 20 upgrades through said download program of lower computer.
With diagnostics lines 203 the OBDII-16 communication interface of slave computer 20 and the follow-up car OBDII standard diagnostics interface 30 of cutting steam is electrically connected.The working power of this slave computer 20 is provided by this diagnose interface 30, need not additional configuration.
Step 4, selection diagnostic mode, the diagnostic mode of the diagnostic module 14 of this host computer 10 comprises a manual diagnostic mode and a key diagnostic mode, a said key diagnostic mode comprises intelligence operation recognition mode and VIN sign indicating number intelligent distinguishing pattern; When not storing this follow-up in first, second memory module 16,26 when cutting steam successful idagnostic logout and the automobile VIN sign indicating number of car, can only select manual diagnostic mode; When storing this follow-up in first, second memory module 16,26 when cutting steam the successful idagnostic logout of car, can select the intelligence operation recognition mode in a manual diagnostic mode or the key diagnostic mode; When storing this follow-up in first, second memory module 16,26 when cutting steam the automobile VIN sign indicating number of car, can select the VIN sign indicating number intelligent distinguishing pattern in a manual diagnostic mode or the key diagnostic mode; Said second memory module 26 also is used for being stored in whole diagnostic scan process because user intervention and the point of interruption information of interrupt scanning.
In the said step 4; The diagnostic mode of diagnostic module also comprises intelligent scanning breakpoint memory pattern, and said intelligent scanning breakpoint memory pattern is whether slave computer 20 scannings second memory module 26 has point of interruption information; If there is point of interruption information; Then begin to continue scanning,, then carry out total system scanning if there is not point of interruption information from this point of interruption.
If step 5 is selected manual diagnostic mode; The user is in the host computer 10 input follow-ups car information (like specifying informations relevant with automobile such as manufacturer, vehicle, year money, systems) of cutting steam; Host computer 10 is cut steam car information transmission instruction to slave computer 20 according to this follow-up; Slave computer 20 reads the follow-up car operational factor of cutting steam through diagnose interface 30, and the data processing unit 24 of slave computer 20 sends the follow-up car operational factor of cutting steam the diagnostic module 14 of host computer 10 to, gets into step 8 then;
Through this manual diagnostic mode can a certain vehicle in complete and accurate ground vehicle diagnosis, and can be stored in the successful idagnostic logout of this vehicle in first, second memory module 16,26, call for a key diagnostic mode.
If step 6 is selected the intelligence operation recognition mode in the key diagnostic mode; Host computer 10 accesses the successful idagnostic logout of corresponding vehicle automatically from first or second memory module 16,26; And import the follow-up car information of cutting steam automatically; Host computer 10 is cut steam car information transmission instruction to slave computer 20 according to this follow-up; Slave computer 20 reads the follow-up car operational factor of cutting steam through diagnose interface 30, and the data processing unit 24 of slave computer 20 sends the follow-up car operational factor of cutting steam the diagnostic module 14 of host computer 10 to, gets into step 8 then;
If step 7 is selected the VIN sign indicating number intelligent distinguishing pattern in the key diagnostic mode; Then host computer 10 obtains this follow-up and cuts steam behind the VIN sign indicating number of car; Automatically from first, second memory module 16,26, access corresponding successful idagnostic logout; And import the follow-up car information of cutting steam automatically, and host computer 10 sends instruction and gives slave computer 20 according to this follow-up car information of cutting steam, and slave computer 20 reads the follow-up car operational factor of cutting steam through diagnose interface 30; The data processing unit 24 of slave computer 20 sends the follow-up car operational factor of cutting steam the diagnostic module 14 of host computer 10 to, gets into step 8 then;
The VIN sign indicating number is unique identity of sign automobile; Confirm vehicle through the cut steam VIN sign indicating number of car of scanning follow-up; And accomplish diagnosis from accessing corresponding successful idagnostic logout automatically, can accomplish diagnostic scan efficiently and easily, and reach accurate diagnosis effect; Avoid complicated menu to select, improved work efficiency.
In sum, automobile failure diagnosis method provided by the invention is through the previous successful idagnostic logout of accomplishing of this upper and lower computer of memory module storage that in upper and lower computer, is provided with; During the similar vehicle of follow-up diagnosis, from memory module, call the functional diagnosis that corresponding successful idagnostic logout is accomplished automobile to be measured, simple, convenient, quick; Simplify the operation of vehicle diagnosis; Also reached accurate diagnosis effect in the time of a foolproof key operation, also need not the user and possess automobile major knowledge, this equipment is the point of interruption of record diagnosis scanning process automatically also; Can continue to carry out diagnostic scan from this point of interruption when diagnose next time, increase work efficiency.
The above for the person of ordinary skill of the art, can make other various corresponding changes and distortion according to technical scheme of the present invention and technical conceive, and all these changes and distortion all should belong to the protection domain of claim of the present invention.
Claims (9)
1. an automobile failure diagnosis method is characterized in that, may further comprise the steps:
Step 1, host computer is provided; This host computer comprises the host computer body, be located at the diagnostic module of this host computer body, be electrically connected at first memory module of this diagnostic module and be electrically connected at a USB/ bluetooth communication of this diagnostic module, and said first memory module stores successful idagnostic logout and the automobile VIN sign indicating number that this host computer is accomplished;
Step 2, slave computer is provided; This slave computer comprises the slave computer body, be located at the data processing unit of this slave computer body, be electrically connected at second memory module of this data processing unit and be electrically connected at the 2nd USB/ bluetooth communication of this data processing unit; Said second memory module stores successful idagnostic logout and the automobile VIN sign indicating number that this slave computer is accomplished, and this upper and lower machine communicates connection through first and second USB/ bluetooth communication;
Step 3, cut steam diagnose interface on the car of this slave computer and follow-up is communicated by letter and is connected;
Step 4, selection diagnostic mode, the diagnostic mode of the diagnostic module of this host computer comprises a manual diagnostic mode and a key diagnostic mode, a said key diagnostic mode comprises intelligence operation recognition mode and VIN sign indicating number intelligent distinguishing pattern; When not storing this follow-up in first, second memory module when cutting steam successful idagnostic logout and the automobile VIN sign indicating number of car, can only select manual diagnostic mode; When storing this follow-up in first, second memory module when cutting steam the successful idagnostic logout of car, can select the intelligence operation recognition mode in a manual diagnostic mode or the key diagnostic mode; When storing this follow-up in first, second memory module when cutting steam the automobile VIN sign indicating number of car, can select the VIN sign indicating number intelligent distinguishing pattern in a manual diagnostic mode or the key diagnostic mode;
If step 5 is selected manual diagnostic mode; The user is in the host computer input follow-up car information of cutting steam; Host computer is cut steam car information transmission instruction to slave computer according to this follow-up; Slave computer reads the follow-up car operational factor of cutting steam through diagnose interface, and the data processing unit of slave computer sends the follow-up car operational factor of cutting steam the diagnostic module of host computer to, gets into step 8 then;
If step 6 is selected the intelligence operation recognition mode in the key diagnostic mode; Host computer accesses the successful idagnostic logout of corresponding vehicle automatically from first or second memory module; Host computer is imported the follow-up car information of cutting steam automatically according to this success idagnostic logout; Host computer is cut steam car information transmission instruction to slave computer according to this follow-up; Slave computer reads the follow-up car operational factor of cutting steam through diagnose interface, and the data processing unit of slave computer sends the follow-up car operational factor of cutting steam the diagnostic module of host computer to, gets into step 8 then;
If step 7 is selected the VIN sign indicating number intelligent distinguishing pattern in the key diagnostic mode; Then host computer obtains this follow-up and cuts steam behind the VIN sign indicating number of car; Automatically from first, second memory module, access corresponding successful idagnostic logout; Host computer is imported the follow-up car information of cutting steam automatically according to this success idagnostic logout, and host computer sends instruction and gives slave computer according to this follow-up car information of cutting steam, and slave computer reads the follow-up car operational factor of cutting steam through diagnose interface; The data processing unit of slave computer sends the follow-up car operational factor of cutting steam the diagnostic module of host computer to, gets into step 8 then;
Step 8, host computer diagnostic module are analyzed this follow-up car operational factor of cutting steam, and draw the diagnostic result of vehicle diagnosis, and this diagnostic result is shown to the user.
2. automobile failure diagnosis method as claimed in claim 1 is characterized in that, said second memory module also is used for being stored in the diagnostic scan process because user intervention and the point of interruption information of interrupt scanning.
3. automobile failure diagnosis method as claimed in claim 2 is characterized in that, in the said step 4, the diagnostic mode of diagnostic module also comprises intelligent scanning breakpoint memory pattern.
4. automobile failure diagnosis method as claimed in claim 3; It is characterized in that said intelligent scanning breakpoint memory pattern is that slave computer scans whether there is point of interruption information in second memory module; If there is point of interruption information; Then begin to continue scanning,, then carry out total system scanning if there is not point of interruption information from this point of interruption.
5. automobile failure diagnosis method as claimed in claim 1 is characterized in that said host computer establishes a communications link through usb data bus and slave computer.
6. automobile failure diagnosis method as claimed in claim 1 is characterized in that said host computer establishes a communications link through bluetooth and slave computer.
7. automobile failure diagnosis method as claimed in claim 1 is characterized in that the working power of said slave computer is provided by diagnose interface, and the working power of host computer is from automobile storage battery or external power source.
8. automobile failure diagnosis method as claimed in claim 1 is characterized in that, said diagnose interface is an OBDII standard diagnostics interface.
9. automobile failure diagnosis method as claimed in claim 1 is characterized in that, said slave computer is connected with diagnose interface through the OBDII-16 communication interface.
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