CN109116832A - Vehicle diagnostic data wireless communication method - Google Patents
Vehicle diagnostic data wireless communication method Download PDFInfo
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- CN109116832A CN109116832A CN201810990112.4A CN201810990112A CN109116832A CN 109116832 A CN109116832 A CN 109116832A CN 201810990112 A CN201810990112 A CN 201810990112A CN 109116832 A CN109116832 A CN 109116832A
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B23/00—Testing or monitoring of control systems or parts thereof
- G05B23/02—Electric testing or monitoring
- G05B23/0205—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults
- G05B23/0208—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults characterized by the configuration of the monitoring system
- G05B23/0213—Modular or universal configuration of the monitoring system, e.g. monitoring system having modules that may be combined to build monitoring program; monitoring system that can be applied to legacy systems; adaptable monitoring system; using different communication protocols
Abstract
The invention discloses a kind of vehicle diagnostic data wireless communication methods, comprising: step S1, establishes diagnostic session with vehicular control unit；Step S2, after sending diagnosis request to vehicular control unit, start timing；Step S3, judge the response data that vehicular control unit transmission whether is received during timing；If so, thening follow the steps S4, the processing response data；If it is not, thening follow the steps the prompt of this diagnosis interaction failure of S5, output characterization.The present invention combines interaction mode to prompt by introducing chronograph mechanism in communication protocol, realizes mobile terminal with this and vehicular control unit is smooth, efficient data exchange process, promote user experience.
Description
Technical field
The present invention relates to vehicle diagnostics technical field more particularly to a kind of vehicle diagnostic data wireless communication methods.
Background technique
With the continuous development of vehicle diagnosis function and diagnostic mode and perfect, and corresponding diagnosis connection type is more
Sample, realizing that mobile terminal carries out wireless diagnostics to vehicle has been in inexorable trend.
After actual experiment and analysis by carrying out wireless diagnostics to vehicle to mobile terminal, discovery exists such as in practical operation
Lower problems demand solves:
Vehicular control unit passes through configuration diagnostics interface equipment and mobile terminal during wirelessly transmitting data, usually
The form kept using question-response, session, i.e. mobile terminal, which send to be in after diagnosis is requested, waits vehicular control unit feedback
The state of response, until terminating this session after getting response.But efficiency of transmission is influenced compared with vulnerable to external factor, causes to move
Dynamic terminal is usually in the wait state without feedback for a long time after issuing diagnosis request, and for popular, mobile phone sends diagnosis request
Just there is no any reactions afterwards, and practical operation is caused to experience bad problem, which may be due to loss of data, prolongs through analysis
When, time-out and two or more transmission data situations such as being adhered both lead to session blocking；Or in another aspect, due to
The electronic control unit of different automobile types is had nothing in common with each other, and leading to message processing capability and processing speed, there is also othernesses, same mobile whole
The diagnosis request that end is sent, in face of also will appear communication effect skimble-scamble problem when different electronic control unit.
Summary of the invention
The object of the present invention is to provide a kind of vehicle diagnostic data wireless communication methods, to ensure the logical of the two wireless telecommunications
Smooth property.
The technical solution adopted by the invention is as follows:
A kind of vehicle diagnostic data wireless communication method, comprising:
Step S1, diagnostic session is established with vehicular control unit；
Step S2, after sending diagnosis request to vehicular control unit, start timing；
Step S3, judge the response data that vehicular control unit transmission whether is received during timing；
If so, thening follow the steps S4, the processing response data；
If it is not, thening follow the steps the prompt of this diagnosis interaction failure of S5, output characterization.
Optionally, step S2 includes:
Step S20, after sending diagnosis request to vehicular control unit, according to the first preset time timing；
Step S3 includes:
Step S30, judge the response data that vehicular control unit transmission whether is received in the first preset time.
Optionally, first preset time include: send diagnosis request after wait-for-response data the general used time with
The sum of data transmission used time under normality.
Optionally, the method also includes:
Step S21 is executed after step S20, judges vehicular control unit transmission whether is received in the first preset time
Holding session instruction；
If it is not, thening follow the steps S30；
If so, thening follow the steps S22, restarting timing according to the second preset time, and exports characterization and wait data processing
Prompt；
Step S3 further includes step S31, judges whether receive what vehicular control unit was sent in the second preset time
Response data.
Optionally, second preset time includes: the longest of the wait-for-response data after receiving holding session instruction
The sum of data transmission used time under used time and normality.
Optionally, the method also includes:
Step S23 is executed after step s 22, judges whether receive vehicular control unit again in the second preset time
The holding session of secondary transmission instructs；
If it is not, thening follow the steps S31；
If so, returning to step S22.
Optionally,
The response data is the diagnostic message data encapsulated via vehicular control unit according to predetermined format；
The step S4 includes:
Step S41, diagnostic message data are decapsulated；
Step S42, according to the data after decapsulation, diagnostic message is exported.
Optionally, the encapsulation format of the diagnostic message data successively include: beginning character, message length, protocol fields,
Data, verification and and termination character.
Optionally, the step S1 includes:
Step S11, the connection identifier and key of preset vehicular control unit；
Step S12, the communication connection instruction of detection user input；
Step S13, after receiving communication connection instruction, diagnostic session is established with vehicular control unit automatically.
Optionally, after step S4 or step S5 further include:
Step S6, according to third preset time timing；
Step S7, judge whether send diagnosis request to vehicular control unit again during third preset time timing；
If so, returning to step S2；
If it is not, thening follow the steps the diagnostic session state of S8, interruption and vehicular control unit.
The present invention combines interaction mode to prompt by introducing chronograph mechanism in communication protocol, is realized with this mobile whole
End and vehicular control unit be smooth, efficient data exchange process, promotes user experience.
Further, the complexity and diversity for fully taking into account data exchange process, when by the way that different timing are arranged
Between and for vehicular control unit actual feedback, the response of different vehicular control units under various circumstances is met with this
Demand.
Further, by the way that effective response data to be packaged, data is solved with this and are adhered and data transmission procedure
The middle situation for mistake occur.
Further, there is mark and key by preset, carries out mobile terminal and vehicular control unit convenient for user
Attended operation promotes the smoothness of entire wireless telecommunications interaction.
Detailed description of the invention
To make the object, technical solutions and advantages of the present invention clearer, the present invention is made into one below in conjunction with attached drawing
Step description, in which:
Fig. 1 is the flow chart of the first embodiment of vehicle diagnostic data wireless communication method provided by the invention；
Fig. 2 is the flow chart of the second embodiment of vehicle diagnostic data wireless communication method provided by the invention；
Fig. 3 is the flow chart of the 3rd embodiment of vehicle diagnostic data wireless communication method provided by the invention；
Fig. 4 is the flow chart of the fourth embodiment of vehicle diagnostic data wireless communication method provided by the invention；
Fig. 5 is the flow chart of the 5th embodiment of vehicle diagnostic data wireless communication method provided by the invention；
Fig. 6 is the flow chart of the sixth embodiment of vehicle diagnostic data wireless communication method provided by the invention.
Specific embodiment
The embodiment of the present invention is described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning to end
Same or similar label indicates same or similar element or element with the same or similar functions.Below with reference to attached
The embodiment of figure description is exemplary, and for explaining only the invention, and is not construed as limiting the claims.
The present invention provides a kind of first embodiments of vehicle diagnostic data wireless communication method, as shown in Figure 1, this method
It can specifically include following steps:
Step S1, diagnostic session is established with vehicular control unit；
Specifically mobile terminal and vehicular control unit can be made to establish and communicated by modes such as bluetooth or WIFI.This field
Technical staff it is understood that vehicular control unit described herein can refer to interior multiple electronic controllers (ECU),
Hardware implemented process is: multiple ECU can be connect by vehicle bus with vehicle diagnostics interface (OBD), then by pluggable
Diagnosis interface equipment (VCI) is connect with OBD, and mobile terminal is really established with VCI be wirelessly connected in actual operation, thus
It is interacted with ECU；In other hardware embodiments, it is also possible to for the components such as multiple ECU being integrated in one, such as in intelligence
Control system (T-BOX is a kind of optinal plan), mobile device are wirelessly connected with the intelligence central control system.But no matter adopt
Which kind of connection type is taken, it is noted that the present invention is not intended to limit the mode of building of related hardware, and is only from communications protocol angle
Degree proposes a kind of vehicle diagnostic data wireless communication method suitable for multiple hardwares environment.
Then after executing step S2, sending diagnosis request to vehicular control unit, start timing；
Invention introduces chronograph mechanisms in this step, are handed over the diagnosis that this investigates mobile terminal and vehicular control unit
Mutual state, is specifically shown in and is illustrated below.
Step S3, judge the response data that vehicular control unit transmission whether is received during timing；
If so, thening follow the steps S4, the processing response data；
If it is not, thening follow the steps the prompt of this diagnosis interaction failure of S5, output characterization.
It can be seen that the present invention keeps the interactive mode of session for existing question-response, persistently, propose by timing
Determine the improvement project of practical interaction mode, and according to the feedback of the vehicular control unit during timing, executes two kinds respectively
Show communication and vehicle-mounted control between the two one is normally receiving response data for the processing mode of this interaction
Cell data treatment process processed is smooth, hands over as long as output at this time can characterize this diagnosis corresponding to the diagnostic message of diagnosis request
Mutually success；Second it is to show that the two communication and/or vehicular control unit occur if not receiving response data yet beyond timing
Problem, it is difficult to effectively obtain required diagnostic data, then export the prompt of this diagnosis interaction failure of characterization, such as " communication at this time
The similar prompt information such as failure ", " vehicular control unit delay machine ", " data transmission blocking ", to inform this diagnosis of user
Interaction failure, it may be necessary to take the operation such as subsequent debugging or retransmission request, avoid question-response
Mode may cause the problem of falling into a long wait.Here it should be noted that, judge response whether is received during timing
The specific implementation process of data both can after timing real-time detection response data, or meter can also be identified after timing
When during data come and go history, determined whether with this and get response data during timing, it is specific in combination with actual demand
It is designed, which is not limited by the present invention.
Communication connection process in view of mobile terminal and vehicular control unit and the sound that is fed back by vehicular control unit
It answers data that may affect to the wireless interaction of the two, therefore is directed to the step S1 and step S4 of Fig. 1 embodiment, the present invention
A kind of more specifically comprehensive implementation reference is given in other embodiments, and second embodiment as shown in Figure 2, this method can
To include the following steps:
Step S11, the connection identifier and key of preset vehicular control unit；
Step S12, the communication connection instruction of detection user input；
Step S13, after receiving communication connection instruction, diagnostic session is established with vehicular control unit automatically；
The purpose of the design above process is the initial stage transmitted from data to ensure mobile terminal and vehicular control unit
Communication connection smoothness, wherein to refer to that the user by mobile terminal passes through existing for the communication connection instruction of user input
Arbitrary form (such as click a " connect " button or voice instruction connection etc.) give expression to desired mobile terminal and vehicle-mounted control list
Member establishes the intention of communication.And connection identifier and key due to being prefixed vehicular control unit, as long as thus mobile terminal position
In in the effective range of wireless connection, the automatic connection of the two can be realized after receiving above-mentioned communication connection instruction, so that
Reach a kind of similar " without discovering " even without manual search equipment and without the operation of cumbersome typing key during diagnosis every time
The function of connecing, it is possible thereby to be the smoothness and high efficiency for ensuring the two data and coming and going from the initial stage of this method.
Step S2, after sending diagnosis request to vehicular control unit, start timing；
Step S3, judge the response data that vehicular control unit transmission whether is received during timing；
Herein, certain limitation is carried out to the response data, specifically, which is via vehicular control unit
According to the diagnostic message data that predetermined format encapsulates, it will be appreciated by persons skilled in the art that if before being contained in hardware
VCI is stated, then encapsulation work can be realized by VCI.
Then it performs the following operations, if it is decided that receive the diagnostic message data during timing, then execute:
Step S41, diagnostic message data are decapsulated；
Step S42, according to the data after decapsulation, diagnostic message is exported；
If it is not, details are not described herein again then with above-mentioned steps S5.
Based on aforementioned specific format, The present invention gives a kind of data encapsulation format of optimization: being followed successively by beginning character, report
Literary length, protocol fields, data, verification and and termination character.Wherein, beginning character can be identified effectively with termination character
The beginning and end of data, thus the case where preventing data to be adhered, and can effectively parse correct data.And message length
With examining the mistake that data occur in transmission process can be prevented with the integrality of verify data and the correctness of data with byte
Accidentally.Therefore above-mentioned packaged type can be improved the error correcting capability of the wireless communication of mobile terminal and vehicular control unit.Certainly, on
Stating format only is a kind of signal, and those skilled in the art can expand and change on its basis.Furthermore also need supplement
It is, it is also contemplated that the data (such as diagnosis request etc.) that mobile terminal is sent are sent to vehicle with the same or similar packing forms
Control unit is carried, is the inverse process of foregoing description process, is packaged data by mobile terminal, by vehicular control unit
(or VCI) carries out decapsulation operation.The purpose is to the data for further promoting wireless telecommunications with bidirectional data transfers angle are reliable
Degree and accuracy.
About the specific implementation of chronograph mechanism, with reference to 3rd embodiment shown in Fig. 3, although being based on Fig. 1 embodiment here
It illustrates, but equally applicable other embodiments.This method may include steps of in Fig. 3:
Step S1, diagnostic session is established with vehicular control unit；
Step S20, after sending diagnosis request to vehicular control unit, according to the first preset time timing；
Step S30, judge the response data that vehicular control unit transmission whether is received in the first preset time；
If so, thening follow the steps S4, the processing response data；
If it is not, thening follow the steps the prompt of this diagnosis interaction failure of S5, output characterization.
First preset time designated herein can be set one compared with fractional value, and for example, 50ms (need to be particularly pointed out, the present invention
Specific embodiment in numerical value be all the reference value that can be adjusted), the purpose is to characterize in an ideal case, mobile terminal
After sending diagnosis request, waits vehicular control unit to feed back the general used time of the response data, that is to say in normal communication
The permitted vehicular control unit of mobile terminal is connected to request to providing response maximum data processing used time.Certainly, in conjunction with reality
For the operation of border, which can be the sum of data transmission used time under aforementioned general used time and normality, described here
Data transmit the used time under normality, refer to data transmission time-consuming, can specifically include: mobile terminal and vehicle-mounted control under normal circumstances
The basic communication time of unit can also add vehicular control unit in the time of bus transmitting data certainly.It is usually such
The data transmission used time is smaller compared with aforementioned data handles the used time under normality, thus it is only used as timing mechanism to tend to rationalization
Supplement, determines whether entire transmission process meets the crucial of timing requirements and be still the aforementioned processing data used time.
Based on Fig. 3 embodiment, present invention further proposes a kind of for abnormal implementation reference, as shown in Figure 4
Fourth embodiment, this method specifically include:
Step S1, diagnostic session is established with vehicular control unit；
Step S20, after sending diagnosis request to vehicular control unit, according to the first preset time timing；
Step S21, judge the holding session instruction that vehicular control unit transmission whether is received in the first preset time；
If it is not, then executing above mentioned step S3 0；
If so, thening follow the steps S22, restarting timing according to the second preset time, and exports characterization and wait data processing
Prompt；
And in the present embodiment, above mentioned step S3 further comprise step S31, judge whether connect in the second preset time
Receive the response data of vehicular control unit transmission.
Similarly, the judgement output of step S31 are as follows: if so, thening follow the steps S4, the processing response data；If it is not, then
Execute the prompt of this diagnosis interaction failure of step S5, output characterization.
The processing capacity for considering vehicular control unit in the present embodiment introduces the second preset time and is used as and further sentences
Fixed condition, basic ideas are that vehicular control unit fails to send the number of responses corresponding to diagnosis request in the first preset time
According to, then can to mobile terminal send a negative response code, the effect of the code be inform mobile terminal be currently under
Data processing need to wait certain time again, which can be considered as by popular understanding keeps session instruction, work as shifting
Dynamic terminal can will wait feedback time further to extend after receiving the instruction, and effect is to protect against accidental interruption session.Wherein,
" certain time " i.e. described second preset time, can be set as such as according to different vehicular control units
A higher number can be set for that can cover a variety of vehicular control units in the numerical value such as 2000ms, 3000ms, 3500ms
Value, so that compatible all vehicular control units, such as it is set as 4000ms.As previously mentioned, introduced herein second is default
Time is primarily referred to as mobile terminal after receiving above-mentioned holding session instruction, and permitted vehicular control unit continues with directly
To the maximum data processing used time for providing response data.Certainly, in conjunction with practical operation, which can also be with
The sum of data transmission used time under data processing used time and normality, under normality described here the definition of data transmission used time and
Meaning in the present invention is already explained, and details are not described herein again.But it is noted that the present embodiment is it is preferably provided that receiving
Output after session instruction is kept to characterize the prompt for waiting data processing, the purpose is to inform that the interaction of user's Current Diagnostic is in place
In reason, from bringing puzzlement to user.And for the particular content and form of prompt information, the present invention is without limitation.
Based on Fig. 4 embodiment, the present invention provides another kinds to be directed to abnormal embodiment, and the as shown in Figure 5 the 5th
Embodiment, the present invention can specifically include:
Step S1, diagnostic session is established with vehicular control unit；
Step S20, after sending diagnosis request to vehicular control unit, according to the first preset time timing；
Step S21, judge the holding session instruction that vehicular control unit transmission whether is received in the first preset time；
If it is not, then executing above mentioned step S3 0；
If so, thening follow the steps S22, restarting timing according to the second preset time, and exports characterization and wait data processing
Prompt；
Step S23, judge the holding session that vehicular control unit is sent again whether is received in the second preset time
Instruction；
If it is not, then executing above mentioned step S3 1；
If so, returning to step S22.
Here it needs to illustrate, can be made whether to carry out multiple second preset time timing by the output of step S23, it is more when having
When secondary second preset time timing occurs, the second preset time that step S23 and step 31 are recorded in the present embodiment indicates last
Second preset time timing, this is not represented in the accompanying drawings, but to those skilled in the art, distinguishes one or more
The order of a second preset time is not no difficulty.
What the present embodiment considered is that vehicular control unit may need the longer time that could feed back required response data,
Therefore aforementioned negative response code (keeping session instruction) may be sent again in second preset time, thus needed
Restart the timing of the second preset time, i.e., again to the time of one section of vehicular control unit processing data.Those skilled in the art
It can be understood that certain number should have certain limitation if desired, holding session instruction can also continue to send repeatedly,
If being persistently difficult to export processing result, show that vehicular control unit is still to need separately to treat there are some problems.
It is still further contemplated that in actual operation, mobile terminal equally can also be at regular intervals to vehicle-mounted
Control unit sends one and instructs (or request instruction) still in the confirmation of hold mode for characterizing conversational communication, in this way,
In the case that two-way mutual hair keeps session instruction, diagnostic session between the two is available reliably to be continued, and not will cause certain
One side terminates shake hands without reason.
Finally, the present invention provides a kind of additional project for interrupting session, as shown in fig. 6, although the sixth embodiment is based on
Fig. 1, but it is equally applicable to the various embodiments described above and its preferred embodiment.Specifically, this method may include:
Step S1, diagnostic session is established with vehicular control unit；
Step S2, after sending diagnosis request to vehicular control unit, start timing；
Step S3, judge the response data that vehicular control unit transmission whether is received during timing；
If so, thening follow the steps S4, the processing response data；
If it is not, thening follow the steps the prompt of this diagnosis interaction failure of S5, output characterization；
And after step S4 or step S5 further include:
Step S6, according to third preset time timing；
Step S7, judge whether send diagnosis request to vehicular control unit again during third preset time timing；
If so, returning to step S2；
If it is not, thening follow the steps the diagnostic session state of S8, interruption and vehicular control unit.
I.e. the original design intention of the present embodiment considers no matter be success or failure, all after a diagnosis request
Need further to judge whether user issues diagnosis request again, in case indefinite be in session hold mode.This sends out again
The diagnosis request sent can be another entirely different diagnosis request that the user after aforementioned request is handled successfully assigns, can also
To be that user repeats the same diagnosis sent request after aforementioned request processing failure.The third preset time can combine
Depending on experience, i.e., permitted idle interval, such as 5000ms, specifically if asked without sending diagnosis again in 5000ms
It asks, is then considered as the intention that user does not send request again, session status between the two by step S8 active break at this time, with
Reasonable disposition resource simultaneously saves meaningless consumption.
It need to supplement, on the basis of the embodiment, the principle that request waits can also be useful in the meeting of initially setting up
The words stage, i.e., the just starting third preset time timing after mobile terminal and vehicular control unit establish session, the purpose is to
Connection starting is avoided without being requested caused by output accordingly long lasting for session status, can to this those skilled in the art
Specifically to be expanded in the thinking of above-described embodiment, which is not limited by the present invention.
It is described in detail structure, feature and effect of the invention based on the embodiments shown in the drawings, but more than
Described is only presently preferred embodiments of the present invention, needs to explain, and technology involved in above-described embodiment and its preferred embodiment is special
Sign, those skilled in the art can be under the premise of not departing from, not changing mentality of designing and technical effect of the invention, rationally
Ground combination collocation is at a variety of equivalent schemes；Therefore, the present invention does not limit the scope of implementation as shown in the drawings, all according to of the invention
Change or equivalent example modified to equivalent change, do not go beyond the spirit of the description and the drawings made by conception
When, it should all be within the scope of the present invention.
Claims (10)
1. a kind of vehicle diagnostic data wireless communication method characterized by comprising
Step S1, diagnostic session is established with vehicular control unit；
Step S2, after sending diagnosis request to vehicular control unit, start timing；
Step S3, judge the response data that vehicular control unit transmission whether is received during timing；
If so, thening follow the steps S4, the processing response data；
If it is not, thening follow the steps the prompt of this diagnosis interaction failure of S5, output characterization.
2. vehicle diagnostic data wireless communication method according to claim 1, which is characterized in that step S2 includes:
Step S20, after sending diagnosis request to vehicular control unit, according to the first preset time timing；
Step S3 includes:
Step S30, judge the response data that vehicular control unit transmission whether is received in the first preset time.
3. vehicle diagnostic data wireless communication method according to claim 2, which is characterized in that first preset time
It include: to diagnose the general used time of wait-for-response data and the sum of data transmission used time under normality after request in transmission.
4. vehicle diagnostic data wireless communication method according to claim 2, which is characterized in that the method also includes:
Step S21 is executed after step S20, judges the guarantor that vehicular control unit transmission whether is received in the first preset time
Hold session instruction；
If it is not, thening follow the steps S30；
If so, thening follow the steps S22, restarting timing according to the second preset time, and export the prompt that characterization waits data processing；
Step S3 further includes step S31, judges the response for whether receiving vehicular control unit transmission in the second preset time
Data.
5. vehicle diagnostic data wireless communication method according to claim 4, which is characterized in that second preset time
It include: to keep after session instruction data transmission the sum of used time under the longest used time of wait-for-response data and normality receiving.
6. vehicle diagnostic data wireless communication method according to claim 4, which is characterized in that the method also includes:
Step S23 is executed after step s 22, judges that vehicular control unit whether is received in the second preset time to be sent out again
The holding session instruction sent；
If it is not, thening follow the steps S31；
If so, returning to step S22.
7. vehicle diagnostic data wireless communication method according to claim 1, which is characterized in that
The response data is the diagnostic message data encapsulated via vehicular control unit according to predetermined format；
The step S4 includes:
Step S41, diagnostic message data are decapsulated；
Step S42, according to the data after decapsulation, diagnostic message is exported.
8. vehicle diagnostic data wireless communication method according to claim 7, which is characterized in that the diagnostic message data
Encapsulation format successively include: beginning character, message length, protocol fields, data, verification and and termination character.
9. vehicle diagnostic data wireless communication method according to claim 1, which is characterized in that the step S1 includes:
Step S11, the connection identifier and key of preset vehicular control unit；
Step S12, the communication connection instruction of detection user input；
Step S13, after receiving communication connection instruction, diagnostic session is established with vehicular control unit automatically.
10. described in any item vehicle diagnostic data wireless communication methods according to claim 1~9, which is characterized in that in step
After S4 or step S5 further include:
Step S6, according to third preset time timing；
Step S7, judge whether send diagnosis request to vehicular control unit again during third preset time timing；
If so, returning to step S2；
If it is not, thening follow the steps the diagnostic session state of S8, interruption and vehicular control unit.
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| CN111273641A (en) * | 2020-03-04 | 2020-06-12 | 上海育宏电子科技有限公司 | Vehicle remote diagnosis connecting device |
| CN113127287A (en) * | 2019-12-31 | 2021-07-16 | 北京车和家信息技术有限公司 | Processor control method and device and electronic equipment |
| CN113765742A (en) * | 2021-08-05 | 2021-12-07 | 北京全路通信信号研究设计院集团有限公司 | Method and system for storing vehicle-mounted data of rail vehicle |
| WO2023205916A1 (en) * | 2022-04-24 | 2023-11-02 | 华为技术有限公司 | On-board diagnostic method, device and system |
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