CN102981499A - Onboard diagnostic device and method based on automobile multimedia terminal - Google Patents
Onboard diagnostic device and method based on automobile multimedia terminal Download PDFInfo
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- CN102981499A CN102981499A CN2012104843820A CN201210484382A CN102981499A CN 102981499 A CN102981499 A CN 102981499A CN 2012104843820 A CN2012104843820 A CN 2012104843820A CN 201210484382 A CN201210484382 A CN 201210484382A CN 102981499 A CN102981499 A CN 102981499A
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Abstract
The invention discloses an onboard diagnostic device and a method based on an automobile multimedia terminal. The method includes the following steps: S1, establishing a connection between a diagnostic communication module and an electronic control unit (ECU), reading vehicle failure information in the ECU, and sending the information to a diagnostic analysis and processing module; and S2, the diagnostic analysis and processing module analyzing the vehicle failure information, and sending the analysis result to the automobile multimedia terminal correspondingly for prompt. According to the device and the method, before the automobile starts, a diagnostic seat connecting device is fixedly arranged on an automobile diagnostic seat; the failure information of the automobile in the ECU is read through the diagnostic communication module, analyzed by the diagnostic analysis and processing module, and correspondingly prompted for a user though the automobile multimedia terminal; and the vehicle failures are diagnosed before driving, feedback is performed for the user through the automobile multimedia terminal, therefore potential safety hazard is reduced, the vehicle safety is improved, and safety of drivers and passengers is guaranteed.
Description
Technical field
The invention belongs to the Automobile Failure Diagnosis Technology field, what be specifically related to is a kind of onboard diagnostic device based on the car multimedia terminal and method.
Back of the body amount technology
In the present all kinds of passenger vehicle all kinds of multi-media information devices are installed all, such as car audio system, Vehicular navigation system, reverse radar system etc., these automobile multimedia devices have included sound and visual screen, and have simultaneously powerful data and the information processing function, but it uses function to only limit to the simple function of the single module of itself, has the lower problem of utilization factor.And present automobile is all by automobile computer (ECU) control work, if the electric-control system of automobile (including automobile computer, performance element, sensor) breaks down, the control computer of electric-control system will be remembered by storage failure, the information such as these fault memories are need to just reading by diagnostic device of correspondence then, and human pilot can't directly obtain these Feedback failure informations with simple tools such as naked eyes.
For human pilot, if can before driving, obtain the failure message of automobile itself, then can effectively guarantee the safety of car steering, but present automotive diagnostic installation fails to spread in the individual application mostly owing to factors such as volume are larger.
Summary of the invention
The object of the present invention is to provide a kind of onboard diagnostic device based on the car multimedia terminal and method, with be implemented in drive a car before, vehicle failure is diagnosed, and correspondence is fed back the user by the car multimedia terminal, to reach the minimizing potential safety hazard, increase vehicle safety, guarantee to drive the purpose with the personal safety of passenger.
The objective of the invention is to be achieved through the following technical solutions.
A kind of onboard diagnostic device based on the car multimedia terminal comprises:
The diagnosis communication module is connected with electronic control unit, is used for the access electronic control unit, and the automobile fault information of read electric control module;
The diagnostic analysis processing module is connected with the diagnosis communication module, is used for the vehicle failure recall info is analyzed, and the output analysis result.
Preferably, described electronic control unit is used for automobile is carried out fault scanning, obtains automobile fault information.
Preferably, this equipment also includes a diagnose connector connector, and described diagnosis communication module is connected with the vehicle standard diagnose interface of electronic control unit by this diagnose connector connector.
Preferably, described diagnose connector connector is fixedly mounted on the vehicle diagnosis seat, and is connected with the vehicle standard diagnose interface.
Preferably, this equipment also includes a car multimedia terminal that is connected with the diagnostic analysis processing module, and described car multimedia terminal is used for obtaining the analysis result of diagnostic analysis processing module output, and points out.
In addition, the present invention also provides a kind of On-Board Diagnostics (OBD) method based on the car multimedia terminal, comprising:
S1, set up being connected between diagnosis communication module and the electronic control unit, the automobile fault information in the read electric control module, and send to the diagnostic analysis processing module;
S2, diagnostic analysis processing module are analyzed automobile fault information, and the analysis result correspondence is sent to the car multimedia terminal, point out.
Preferably, comprise before the S1:
Electronic control unit carries out fault scanning to automobile, obtains automobile fault information, and stores.
Preferably, S1 comprises:
The diagnosis communication module is fixedly mounted on the vehicle diagnosis seat by the diagnose connector connector, and is connected with the vehicle standard diagnose interface.
Preferably, S2 comprises:
The diagnostic analysis processing module is analyzed automobile fault information, and unusual if analysis result shows, then correspondence sends to the car multimedia terminal, carries out the abnormal alarm prompting by the car multimedia terminal.
Preferably, S2 comprises:
The diagnostic analysis processing module is analyzed automobile fault information, and normal if analysis result shows, then correspondence sends to the car multimedia terminal, carries out regular prompt by the car multimedia terminal.
The present invention compared with prior art, beneficial effect is: onboard diagnostic device and method based on the car multimedia terminal provided by the invention, before driving a car, the diagnose connector connector is fixedly mounted on the vehicle diagnosis seat, read failure message in the automobile ECU by the diagnosis communication module, and by the diagnostic analysis processing module automobile fault information is analyzed, correspondingly point out in the car multimedia terminal.The present invention diagnosed vehicle failure before driving a car, and corresponding by the car multimedia terminal user was fed back, thereby reached the minimizing potential safety hazard, increased vehicle safety, guaranteed to drive the purpose with the personal safety of passenger.
Description of drawings
Fig. 1 is system principle diagram of the present invention.
Fig. 2 is principle of work process flow diagram of the present invention.
Embodiment
In order to make purpose of the present invention, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, is not intended to limit the present invention.
See also shown in Figure 1ly, Fig. 1 is system principle diagram of the present invention.The present invention is to provide a kind of onboard diagnostic device based on the car multimedia terminal, being mainly used in solving present vehicle failure need to just can read by dedicated diagnostic device, and human pilot can't directly obtain the problem of these Feedback failure informations with simple tools such as naked eyes.
Wherein the present invention is based on the onboard diagnostic device of car multimedia terminal, comprising: diagnose connector connector, diagnosis communication module and diagnostic analysis processing module.The diagnosis communication module is connected with the diagnose connector connector, the diagnose connector connector is fixedly mounted on the vehicle diagnosis seat, and be connected to electronic control unit by the vehicle standard diagnose interface, by OBD or the proprietary diagnosing protocol of vehicle, electronic control unit is conducted interviews, and before vehicle launch, vehicle is carried out fault scanning, the automobile fault information of read electric control module.
The diagnostic analysis processing module, an end is connected with the diagnosis communication module, is used for the vehicle failure recall info is analyzed; The other end then is connected with the car multimedia terminal, is used for the analysis processing result correspondence is sent to the car multimedia terminal, and carries out regular prompt or abnormal alarm prompting according to analysis result.
Wherein said diagnose connector connector need to meet SAE J1962 designing requirement, and it is installed in the solid and reliable loose or dislocation that is difficult on the vehicle diagnosis seat; The diagnosis communication module need to meet ISO 9141-2, K/L lins, SAE-J1850 VPW, SAE-J1850 PWM, CAN ISO 11898 ISO15765-4, at a high speed, the communication module physics requirement such as middling speed and low speed CAN, can be separately or each quasi-protocol Communication physical layer requirement of integration realization; The diagnostic analysis processing module requires the chip (ARM7 or M3 processor) of processing power more than 60MHz, can carry out protocol code processes, if the vehicle multimedia terminal has enough processing poweies, also can directly use the process chip of vehicle audio system to process; If when diagnostic analysis processing module and multimedia terminal system were different process chip, it is mutual that both can utilize wired (such as UART, LIN, network) or modes such as wireless (Wifi, bluetooths) to carry out communication.
The present invention is before automobile starting, the diagnose connector connector can be fixedly mounted on the vehicle diagnosis seat, read failure message in the automobile ECU by the diagnosis communication module, and by the diagnostic analysis processing module automobile fault information is analyzed, correspondingly point out in the car multimedia terminal, with the sightless fault of automobile, by the car multimedia terminal feedback to the vehicle drive personnel, to reduce potential safety hazard, increase vehicle safety, guarantee to drive the personal safety as well as the property safety with passenger.
More than be the explanation to the onboard diagnostic device that the present invention is based on the car multimedia terminal, the On-Board Diagnostics (OBD) method that the present invention is based on the car multimedia terminal below in conjunction with 2 pairs in accompanying drawing is further described.
See also shown in Figure 2ly, Fig. 2 is principle of work process flow diagram of the present invention.The present invention also provides a kind of On-Board Diagnostics (OBD) method based on the car multimedia terminal, and it comprises that specifically step is as follows:
At first before automobile starting, the diagnosis communication module is fixedly mounted on the vehicle diagnosis seat by the diagnose connector connector, and is connected with the vehicle standard diagnose interface; Electronic control unit then carries out fault scanning to automobile, obtains automobile fault information, and stores.
S1, set up being connected between diagnosis communication module and the electronic control unit, the automobile fault information in the read electric control module, and send to the diagnostic analysis processing module;
S2, diagnostic analysis processing module are analyzed automobile fault information, and the analysis result correspondence is sent to the car multimedia terminal, point out.
The diagnostic analysis processing module is analyzed automobile fault information, and unusual if analysis result shows, then correspondence sends to the car multimedia terminal, carries out the abnormal alarm prompting by the car multimedia terminal.
The diagnostic analysis processing module is analyzed automobile fault information, and normal if analysis result shows, then correspondence sends to the car multimedia terminal, carries out regular prompt by the car multimedia terminal.
Specific works principle of the present invention is: automatically detect after at first powering on, guarantee the function of modules and complete, the reliability of hardware, then start diagnostic function, the diagnosis communication module is carried out initialization, prepare for reading the vehicle electronic control unit fault; Then read the vehicle electronic control unit failure message by the diagnosis communication module, and send to the diagnostic analysis processing module, the diagnostic analysis processing module is analyzed the vehicle trouble information that reads afterwards, if carry out analyzing and processing by the multimedia terminal, then directly feedback (sound, literal or image information) is given the vehicle drive personnel; Otherwise, just by wireless or wire communication module, analysis result is sent to the multimedia terminal, and feeds back (sound, literal or image information) to the vehicle drive personnel by multimedia terminal system.
The above only is preferred embodiment of the present invention, not in order to limiting the present invention, all any modifications of doing within the spirit and principles in the present invention, is equal to and replaces and improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. onboard diagnostic device based on the car multimedia terminal is characterized in that comprising:
The diagnosis communication module is connected with electronic control unit, is used for the access electronic control unit, and the automobile fault information of read electric control module;
The diagnostic analysis processing module is connected with the diagnosis communication module, is used for the vehicle failure recall info is analyzed, and the output analysis result.
2. the onboard diagnostic device based on the car multimedia terminal according to claim 1 is characterized in that described electronic control unit is used for automobile is carried out fault scanning, obtains automobile fault information.
3. the onboard diagnostic device based on the car multimedia terminal according to claim 1 characterized by further comprising a diagnose connector connector, and described diagnosis communication module is connected with the vehicle standard diagnose interface of electronic control unit by this diagnose connector connector.
4. the onboard diagnostic device based on the car multimedia terminal according to claim 3 is characterized in that described diagnose connector connector is fixedly mounted on the vehicle diagnosis seat, and is connected with the vehicle standard diagnose interface.
5. the onboard diagnostic device based on the car multimedia terminal according to claim 1, characterized by further comprising a car multimedia terminal that is connected with the diagnostic analysis processing module, described car multimedia terminal is used for obtaining the analysis result of diagnostic analysis processing module output, and points out.
6. On-Board Diagnostics (OBD) method based on the car multimedia terminal is characterized in that comprising:
S1, set up being connected between diagnosis communication module and the electronic control unit, the automobile fault information in the read electric control module, and send to the diagnostic analysis processing module;
S2, diagnostic analysis processing module are analyzed automobile fault information, and the analysis result correspondence is sent to the car multimedia terminal, point out.
7. the On-Board Diagnostics (OBD) method based on the car multimedia terminal according to claim 6 is characterized in that comprising before the S1:
Electronic control unit carries out fault scanning to automobile, obtains automobile fault information, and stores.
8. the On-Board Diagnostics (OBD) method based on the car multimedia terminal according to claim 6 is characterized in that S1 comprises:
The diagnosis communication module is fixedly mounted on the vehicle diagnosis seat by the diagnose connector connector, and is connected with the vehicle standard diagnose interface.
9. the On-Board Diagnostics (OBD) method based on the car multimedia terminal according to claim 6 is characterized in that S2 comprises:
The diagnostic analysis processing module is analyzed automobile fault information, and unusual if analysis result shows, then correspondence sends to the car multimedia terminal, carries out the abnormal alarm prompting by the car multimedia terminal.
10. the On-Board Diagnostics (OBD) method based on the car multimedia terminal according to claim 6 is characterized in that S2 comprises:
The diagnostic analysis processing module is analyzed automobile fault information, and normal if analysis result shows, then correspondence sends to the car multimedia terminal, carries out regular prompt by the car multimedia terminal.
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| CN2012104843820A CN102981499A (en) | 2012-11-23 | 2012-11-23 | Onboard diagnostic device and method based on automobile multimedia terminal |
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| CN2012104843820A CN102981499A (en) | 2012-11-23 | 2012-11-23 | Onboard diagnostic device and method based on automobile multimedia terminal |
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| CN103685240A (en) * | 2013-11-25 | 2014-03-26 | 深圳市元征科技股份有限公司 | DPU431 based vehicle diagnosis module and DPU431 based vehicle diagnosis method |
| CN109164789A (en) * | 2018-09-19 | 2019-01-08 | 浙江吉利汽车研究院有限公司 | A kind of in-vehicle multi-media system for information of vehicles diagnosis |
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Application publication date: 20130320 |