CN103455022B - A kind of diagnostic method of controlled vehicle-mounted electrical device and device - Google Patents
A kind of diagnostic method of controlled vehicle-mounted electrical device and device Download PDFInfo
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Abstract
The present invention proposes a kind of diagnostic method of controlled vehicle-mounted electrical device, comprise the following steps: diagnostic device sends request signal by CAN to multiple controlled vehicle-mounted electrical device, and determine whether online controlled vehicle-mounted electrical device according to the request response signal of the multiple controlled vehicle-mounted electrical device feedbacks received; Diagnostic device transmits control signal to online controlled vehicle-mounted electrical device; Each online controlled vehicle-mounted electrical device upon the reception of control signals, judges whether the condition meeting control signal, sends feedback response according to judged result to diagnostic device; Diagnostic device performs corresponding diagnostic operation according to the feedback response of online controlled vehicle-mounted electrical device and default diagnosis algorithm to online controlled vehicle-mounted electrical device.The invention allows for a kind of diagnostic device of controlled vehicle-mounted electrical device.The present invention can diagnose multiple dissimilar controlled vehicle-mounted electrical device simultaneously, achieves the diagnostic method of modularization, hardware and software platform, improves the dirigibility of controlled vehicle-mounted electrical device diagnosis, ease for use, reliability.
Description
Technical field
The present invention relates to the automobile electrically-controlled product scope of system, particularly a kind of diagnostic method of controlled vehicle-mounted electrical device and device.
Background technology
Along with the fast development of automotive field electronic technology, in increasing automobile product, incorporate electronic technology.So that its high precision, high speed, control is flexible etc., feature progressively replaces traditional mechanical hook-up to automobile electronics.In order to ensure the reliability of automobile electronics, troubleshooting capability flexibly, must carry out discontinuity to automobile electrically-controlled product, necessary diagnosis.
The fault diagnosis technology of existing automobile mounted electric control gear has following shortcoming:
(1) device designed according to most of fault diagnosis technology, only for automobile electrically-controlled product unique separately, does not have good extendability.Diagnostic device produces along with product produces, and terminate and terminate, limited life cycle, recycling property is bad, and dirigibility is not strong.
(2), during the multiple controller of existing diagnostic techniques inline diagnosis, must diagnose controller successively, or diagnose indirectly by other controller, reliability and real-time bad.
(3) because current automobile electrically-controlled product has principle variability, structure diversity, performance diversity, fault time variation, description complexity, existing diagnostic techniques cannot meet accomplishes efficient and flexibly, polynary and reliable requirement.
Summary of the invention
The present invention is intended at least one of solve the problems of the technologies described above.
For this reason, first object of the present invention is the diagnostic method proposing a kind of controlled vehicle-mounted electrical device, can reach simultaneously to the effect that multiple dissimilar automobile mounted electronic-controlled installation is diagnosed, achieve the diagnostic method of modularization, hardware and software platform, greatly increase the dirigibility of Vehicular electronic control unit diagnosis, ease for use, reliability.Second object of the present invention is the diagnostic device proposing a kind of controlled vehicle-mounted electrical device.
To achieve these goals, the embodiment of first aspect present invention proposes a kind of diagnostic method of controlled vehicle-mounted electrical device, comprise the following steps: diagnostic device sends request signal by CAN to multiple controlled vehicle-mounted electrical device, and determine whether online controlled vehicle-mounted electrical device according to the request response signal of the described multiple controlled vehicle-mounted electrical device feedbacks received; If so, then described diagnostic device transmits control signal to described online controlled vehicle-mounted electrical device; Each described online controlled vehicle-mounted electrical device, after receiving the described control signal from described diagnostic device, judges whether the condition meeting described control signal, sends feedback response according to judged result to described diagnostic device; Described diagnostic device performs corresponding diagnostic operation according to the feedback response of described online controlled vehicle-mounted electrical device and default diagnosis algorithm to described online controlled vehicle-mounted electrical device.
According to the diagnostic method of the controlled vehicle-mounted electrical device of the embodiment of the present invention, can reach simultaneously to the effect that multiple dissimilar automobile mounted electronic-controlled installation is diagnosed, achieve the diagnostic method of modularization, hardware and software platform, greatly increase the dirigibility of Vehicular electronic control unit diagnosis, ease for use, reliability.
In one embodiment of the invention, described diagnostic device automatically sends described request signal by described CAN to described multiple controlled vehicle-mounted electrical device; Or user manually controls described diagnostic device and sends described request signal by described CAN to described multiple controlled vehicle-mounted electrical device.
In one embodiment of the invention, request response signal according to the described multiple controlled vehicle-mounted electrical device feedbacks received determines whether online controlled vehicle-mounted electrical device, comprise: when the request response signal that described diagnostic device receives described controlled vehicle-mounted electrical device feedback is positive response signal, then judge that described controlled vehicle-mounted electrical device is online controlled vehicle-mounted electrical device.
In one embodiment of the invention, described control signal comprises control command and Diagnostic parameters.
In one embodiment of the invention, described online controlled vehicle-mounted electrical device sends feedback response according to judged result to described diagnostic device, comprise the steps: when described online controlled vehicle-mounted electrical device judges that the condition of described control signal meets, then just responding CAN frame by described CAN to described diagnostic device transmission to answer, otherwise, send Negative Acknowledgment CAN frame by described CAN to described diagnostic device and answer.
In one embodiment of the invention, described online controlled vehicle-mounted electrical device periodically detects the control signal of described diagnostic device, and selects the parameter of the described feedback response sent to described diagnostic device according to described control signal.
In one embodiment of the invention, the parameter of described feedback response comprises: send the mode of described feedback response, type, size and speed.
In one embodiment of the invention, described diagnostic device performs corresponding diagnostic operation according to the feedback response of described online controlled vehicle-mounted electrical device and default diagnosis algorithm to described online controlled vehicle-mounted electrical device, comprise: for the described online controlled vehicle-mounted electrical device sending the answer of Negative Acknowledgment CAN frame, described diagnostic device sends the control signal after adjustment to described online controlled vehicle-mounted electrical device after adjusting described control signal again, or abandons the online controlled vehicle-mounted electrical device of the condition not meeting described control signal; For sending the described online controlled vehicle-mounted electrical device just responding CAN frame and answering, described diagnostic device carries out Normal Diagnosis to described online controlled vehicle-mounted electrical device.
In one embodiment of the invention, also comprise the steps: after diagnosis terminates, described diagnostic device generates the diagnostic data corresponding to described online controlled vehicle-mounted electrical device, and stores described diagnostic data.
The embodiment of second aspect present invention proposes a kind of diagnostic device of controlled vehicle-mounted electrical device, comprise: diagnostic module, for generation of multiple controlled vehicle-mounted electrical device request signal and described request signal is sent to corresponding described controlled vehicle-mounted electrical device, and determine whether online controlled vehicle-mounted electrical device according to the request response signal of the described multiple controlled vehicle-mounted electrical device feedbacks received, and transmit control signal to described online controlled vehicle-mounted electrical device, and according to the described online controlled vehicle-mounted electrical device received, to described online controlled vehicle-mounted electrical device, corresponding diagnostic operation is performed for the feedback response of described control signal and default diagnosis algorithm, transport module, described transport module is connected with described controlled vehicle-mounted electrical device with described diagnostic module respectively, for carrying out data transmission between described diagnostic module and described controlled vehicle-mounted electrical device, power module, for powering to described diagnostic module and described transport module.
According to the diagnostic device of the controlled vehicle-mounted electrical device of the embodiment of the present invention, can reach simultaneously to the effect that multiple dissimilar automobile mounted electronic-controlled installation is diagnosed, achieve the diagnostic method of modularization, hardware and software platform, greatly increase the dirigibility of Vehicular electronic control unit diagnosis, ease for use, reliability.
Additional aspect of the present invention and advantage will part provide in the following description, and part will become obvious from the following description, or be recognized by practice of the present invention.
Accompanying drawing explanation
Above-mentioned and/or additional aspect of the present invention and advantage will become obvious and easy understand from accompanying drawing below combining to the description of embodiment, wherein:
Fig. 1 is the process flow diagram of the diagnostic method of the controlled vehicle-mounted electrical device of one embodiment of the invention;
Fig. 2 is the structural representation of the CAN of one embodiment of the invention;
Fig. 3 is the operational scheme schematic diagram of the diagnostic method of the controlled vehicle-mounted electrical device of one embodiment of the invention;
Fig. 4 is the topological structure schematic diagram of diagnostic device and multiple controlled vehicle-mounted electrical device in the diagnostic procedure of one embodiment of the invention;
Fig. 5 is the schematic diagram of the diagnostic device of the controlled vehicle-mounted electrical device of one embodiment of the invention; And
Fig. 6 is the schematic diagram of the diagnostic device of the controlled vehicle-mounted electrical device of another embodiment of the present invention.
Embodiment
Be described below in detail embodiments of the invention, the example of described embodiment is shown in the drawings, and wherein same or similar label represents same or similar element or has element that is identical or similar functions from start to finish.Being exemplary below by the embodiment be described with reference to the drawings, only for explaining the present invention, and can not limitation of the present invention being interpreted as.
In describing the invention, it is to be appreciated that term " first ", " second " only for describing object, and can not be interpreted as instruction or hint relative importance.
In describing the invention, it should be noted that, unless otherwise clearly defined and limited, term " installation ", " being connected ", " connection " should be interpreted broadly, and such as, can be fixedly connected with, also can be removably connect, or connect integratedly; Can be mechanical connection, also can be electrical connection; Can be directly be connected, also indirectly can be connected by intermediary, can be the connection of two element internals.For the ordinary skill in the art, concrete condition above-mentioned term concrete meaning in the present invention can be understood.
As shown in Figure 1, the diagnostic method of the controlled vehicle-mounted electrical device of embodiment according to a first aspect of the present invention, comprises the following steps:
S101: diagnostic device passes through CAN(ControllerAreaNetwork, controller local area network) bus sends request signal to multiple controlled vehicle-mounted electrical device, and determine whether online controlled vehicle-mounted electrical device according to the request response signal of the multiple controlled vehicle-mounted electrical devices feedbacks received.
S1011: diagnostic device automatically sends request signal by CAN to multiple controlled vehicle-mounted electrical device; Or user manually controls diagnostic device and sends request signal by CAN to multiple controlled vehicle-mounted electrical device.
CAN communication agreement is a kind of communication protocol of broadcast type, passes through ID(Identification) carry out nondestructive arbitration.As shown in Figure 2, CAN adopt OSI(OpenSystemInterconnect, inventionthe open systems interconnection) seven-layer structure, be respectively: Physical layer, data link layer, network layer, transport layer, session layer, presentation layer, application layer.The advantage of this hierarchy is that standard interface facilitates engineering modularization, reduces complexity, program is more easily revised, and the speed of product development is faster, and every layer utilizes the underlying services be close to, more easily remembers the function of each layer.
The present invention is by the CAN deagnostic communication agreement of " question and answer mode ", use independently hardware, software merit rating system, by each communication layers independent of CAN, various dissimilar automobile electrically-controlled product is formulated and follows the unified diagnosing protocol based on CAN network, make diagnostic method modularization, hardware and software platform, the stratified fault diagnosis module of design tool, makes product to pass through configuration, to adapt to the diagnosis of dissimilar automobile electrically-controlled product.Independently design the structure of each CAN network layer, by the variable transferring data in service between at all levels, design can the diagnostic horizon of separate configurations, completes the diagnosis for different controlled vehicle-mounted electrical product.
S1012: after online controlled vehicle-mounted electrical device receives request signal, responds positive response signal as request response signal, identifies this controlled vehicle-mounted electrical device online.
S1013: when the request response signal that diagnostic device receives controlled vehicle-mounted electrical device feedback is positive response signal, then judge that this controlled vehicle-mounted electrical device is electric control gear vehicle-mounted online.
S102: diagnostic device transmits control signal to online controlled vehicle-mounted electrical device.
Wherein, control signal comprises control command and Diagnostic parameters.Diagnostic parameters includes but are not limited to: test item list, diagnosis sequential, data rate etc.Diagnostic device, by arranging control command and Diagnostic parameters, reaches the effect of multiple controlled vehicle-mounted electrical device being carried out to parallel diagnosis process.
S103: each online controlled vehicle-mounted electrical device, after receiving the control signal of self-diagnosis system, judges whether the condition meeting this control signal, sends feedback response according to judged result to diagnostic device.
Online controlled vehicle-mounted electrical device periodically detects the control signal of described diagnostic device, judges whether the condition meeting this control signal, when meeting, is sent the feedback response just responding CAN frame and answering by CAN to diagnostic device; Otherwise, sent the feedback response of Negative Acknowledgment CAN frame answer to diagnostic device by CAN.
Further, online controlled vehicle-mounted electrical device, according to control signal, selects the parameter of the feedback response sent to diagnostic device.Wherein, the parameter of feedback response comprises: send the mode of feedback response, type, size and speed.
S104: diagnostic device performs corresponding diagnostic operation according to the feedback response of online controlled vehicle-mounted electrical device and default diagnosis algorithm to online controlled vehicle-mounted electrical device.
For the online controlled vehicle-mounted electrical device sending the answer of Negative Acknowledgment CAN frame, again send the control signal after adjustment to online controlled vehicle-mounted electrical device after diagnostic device adjustment control signal, or abandon the online controlled vehicle-mounted electrical device of the condition not meeting control signal; For sending the online controlled vehicle-mounted electrical device just responding CAN frame and answering, diagnostic device carries out Normal Diagnosis to online controlled vehicle-mounted electrical device.
The diagnostic process of the controlled vehicle-mounted electrical device of one embodiment of the invention is described below as shown in Figure 3.
S301: check that in Automobile, each device connects correctly and normally powers on.
S302: diagnostic device is manual/auto sends request order, online controlled vehicle-mounted electrical product responds request command.
S303: control signal is sent to online controlled vehicle-mounted electrical device by diagnostic device.
S304: online controlled vehicle-mounted electrical product judges whether oneself meets the requirement of control signal, if met, performs S305; If do not met, perform S306.
S305: online controlled vehicle-mounted electrical device sends to diagnostic device and just responding the answer of CAN frame.
S306: online controlled vehicle-mounted electrical device sends Negative Acknowledgment CAN frame to diagnostic device and answers.
S307: diagnostic device judges whether according to the feedback signal of online controlled vehicle-mounted electrical device the online controlled vehicle-mounted electrical device abandoning not meeting control signal condition, if abandoned, performs S310; Otherwise, perform S308.
S308: adjustment control signal, namely adjusts control command and Diagnostic parameters.
S309: the feedback signal according to online controlled vehicle-mounted electrical device is diagnosed.
S310: diagnostic device generates the diagnostic data corresponding to controlled vehicle-mounted electrical device, and stores diagnostic data, draws diagnostic result and report.
Be stored in the diagnostic data in diagnostic device, can for extracting at any time and carrying out off-line analysis.
According to the diagnostic method of the controlled vehicle-mounted electrical device of the embodiment of the present invention, can reach simultaneously to the effect that multiple dissimilar automobile mounted electronic-controlled installation is diagnosed, achieve the diagnostic method of modularization, hardware and software platform, greatly increase the dirigibility of Vehicular electronic control unit diagnosis, ease for use, reliability.
In one embodiment of the invention, diagnostic device also has the functions such as the final detection of mistake, diagnosis control, diagnostic data management in real time.
In one embodiment of the invention, in diagnostic procedure as described in Figure 4 diagnostic device and each accept shown in the topological structure schematic diagram of the online controlled vehicle-mounted electrical device diagnosed, diagnostic device is as host node, each controlled vehicle-mounted electrical device, as from node, comprising: online controlled vehicle-mounted electrical device 1, online controlled vehicle-mounted electrical device 2, online controlled vehicle-mounted electrical device K, online controlled vehicle-mounted electrical device n-1, online controlled vehicle-mounted electrical device n, altogether n online controlled vehicle-mounted electrical device.
In the diagnostic method of the controlled vehicle-mounted electrical device of the embodiment of the present invention, using diagnostic device as host node, control the beginning of diagnosis, carry out and end, and form the attribute of a relation of a kind of principal and subordinate between each controlled vehicle-mounted electrical device, it is a kind of stable structure, be beneficial to expansion, and online or off-line can be completed, a diagnosis to multiple controlled vehicle-mounted electrical device; By the communication exchanges mode of " question-response " formula, control the quantity of CAN frame traffic in CAN; By the final testing mechanism of the mistake of diagnostic device, for the judgement of mistake in unified CAN, by the memory module that diagnostic device carries, the analysis of off-line and the playback of data can be completed; By the CAN communication Rotating fields of stratification, improve reliability, achieve modularization, hardware and software platform.
As shown in Figure 5, the diagnostic device of the controlled vehicle-mounted electrical device of embodiment according to a second aspect of the present invention, comprising: diagnostic module 510, transport module 520 and power module 530.
Particularly, diagnostic module 510 for generation of multiple controlled vehicle-mounted electrical device request signal and request signal is sent to corresponding controlled vehicle-mounted electrical device by transport module 520, and receive by transport module 520 request response signal that multiple controlled vehicle-mounted electrical device feeds back, and determine whether online controlled vehicle-mounted electrical device according to this feedback request response signal.Diagnostic module 510 is also for transmitting control signal to online controlled vehicle-mounted electrical device by transport module 520, and receive the feedback response of online controlled vehicle-mounted electrical device for control signal by transport module 520, and according to this feedback response and default diagnosis algorithm, corresponding diagnostic operation is performed to online controlled vehicle-mounted electrical device.Wherein, control signal comprises control command and Diagnostic parameters.
Transport module 520 is connected with controlled vehicle-mounted electrical device with diagnostic module 510 respectively, for carrying out data transmission between diagnostic module 510 and controlled vehicle-mounted electrical device.
In one embodiment of the invention, transport module 520 adopts CAN.
Power module 530 is for powering to diagnostic module 510 and transport module 520.
As shown in Figure 6, the diagnostic device of controlled vehicle-mounted electrical device in one embodiment of the invention, also comprises memory module 540, for storing the diagnostic data that diagnostic module 510 generates.
In one embodiment of the invention, diagnostic module 510 produces the request signal of multiple controlled vehicle-mounted electrical device and request signal is sent to corresponding controlled vehicle-mounted electrical device by transport module 520.Then, it is positive response signal that diagnostic module 510 receives by transport module 520 request response signal that certain controlled vehicle-mounted electrical device feeds back, so judge that this controlled vehicle-mounted electrical device is online according to this positive response signal.Diagnostic module 510 is transmitted control signal to this online controlled vehicle-mounted electrical device by transport module 520.When online controlled vehicle-mounted electrical device judges that the condition of control signal meets, by transport module 520 to diagnostic module 510 send just respond CAN frame answer, diagnostic module 510 receive this just responding CAN frame answer after, Normal Diagnosis is carried out to this online controlled vehicle-mounted electrical device; When online controlled vehicle-mounted electrical device judges not meet the condition of control signal, send Negative Acknowledgment CAN frame by transport module 520 to diagnostic module 510 to answer, after diagnostic module 510 receives the answer of this Negative Acknowledgment CAN frame, again send the control signal after adjustment by transport module 520 to this online controlled vehicle-mounted electrical device after adjustment control signal, or abandon this online controlled vehicle-mounted electrical device.After diagnosis completes, diagnostic module 510 produces the diagnostic data corresponding to this online controlled vehicle-mounted electrical device, and is stored in memory module 540 by this diagnostic data.
According to the diagnostic device of the controlled vehicle-mounted electrical device of the embodiment of the present invention, can reach simultaneously to the effect that multiple dissimilar automobile mounted electronic-controlled installation is diagnosed, achieve the diagnostic method of modularization, hardware and software platform, greatly increase the dirigibility of Vehicular electronic control unit diagnosis, ease for use, reliability.
In the description of this instructions, specific features, structure, material or feature that the description of reference term " embodiment ", " some embodiments ", " example ", " concrete example " or " some examples " etc. means to describe in conjunction with this embodiment or example are contained at least one embodiment of the present invention or example.In this manual, identical embodiment or example are not necessarily referred to the schematic representation of above-mentioned term.And the specific features of description, structure, material or feature can combine in an appropriate manner in any one or more embodiment or example.
Although illustrate and describe embodiments of the invention, those having ordinary skill in the art will appreciate that: can carry out multiple change, amendment, replacement and modification to these embodiments when not departing from principle of the present invention and aim, scope of the present invention is by claim and equivalency thereof.
Claims (9)
1. a diagnostic method for controlled vehicle-mounted electrical device, is characterized in that, comprises the following steps:
Diagnostic device sends request signal by CAN to multiple controlled vehicle-mounted electrical device, and determines whether online controlled vehicle-mounted electrical device according to the request response signal of the described multiple controlled vehicle-mounted electrical device feedbacks received;
If so, then described diagnostic device transmits control signal to described online controlled vehicle-mounted electrical device, and wherein, described control signal comprises control command and Diagnostic parameters;
Each described online controlled vehicle-mounted electrical device, after receiving the described control signal from described diagnostic device, judges whether the condition meeting described control signal, sends feedback response according to judged result to described diagnostic device; And
Described diagnostic device performs corresponding diagnostic operation according to the feedback response of described online controlled vehicle-mounted electrical device and default diagnosis algorithm to described online controlled vehicle-mounted electrical device.
2. the diagnostic method of controlled vehicle-mounted electrical device as claimed in claim 1, is characterized in that, described diagnostic device automatically sends described request signal by described CAN to described multiple controlled vehicle-mounted electrical device; Or user manually controls described diagnostic device and sends described request signal by described CAN to described multiple controlled vehicle-mounted electrical device.
3. the diagnostic method of controlled vehicle-mounted electrical device as claimed in claim 1, is characterized in that, the request response signal according to the described multiple controlled vehicle-mounted electrical device feedbacks received determines whether online controlled vehicle-mounted electrical device, comprises the steps:
When the request response signal that described diagnostic device receives described controlled vehicle-mounted electrical device feedback is positive response signal, then judge that described controlled vehicle-mounted electrical device is online controlled vehicle-mounted electrical device.
4. the diagnostic method of controlled vehicle-mounted electrical device as claimed in claim 1, is characterized in that, described online controlled vehicle-mounted electrical device sends feedback response according to judged result to described diagnostic device, comprises the steps:
When described online controlled vehicle-mounted electrical device judges that the condition of described control signal meets, then just responding CAN frame by described CAN to described diagnostic device transmission and answering, otherwise, send Negative Acknowledgment CAN frame by described CAN to described diagnostic device and answer.
5. the diagnostic method of controlled vehicle-mounted electrical device as claimed in claim 1, it is characterized in that, also comprise the steps: that described online controlled vehicle-mounted electrical device periodically detects the control signal of described diagnostic device, and select the parameter of the described feedback response sent to described diagnostic device according to described control signal.
6. the diagnostic method of controlled vehicle-mounted electrical device as claimed in claim 5, it is characterized in that, the parameter of described feedback response comprises: send the mode of described feedback response, type, size and speed.
7. the diagnostic method of controlled vehicle-mounted electrical device as claimed in claim 4, it is characterized in that, described diagnostic device performs corresponding diagnostic operation according to the feedback response of described online controlled vehicle-mounted electrical device and default diagnosis algorithm to described online controlled vehicle-mounted electrical device, comprising:
For the described online controlled vehicle-mounted electrical device sending the answer of Negative Acknowledgment CAN frame, described diagnostic device sends the control signal after adjustment to described online controlled vehicle-mounted electrical device after adjusting described control signal again, or abandons the online controlled vehicle-mounted electrical device of the condition not meeting described control signal;
For sending the described online controlled vehicle-mounted electrical device just responding CAN frame and answering, described diagnostic device carries out Normal Diagnosis to described online controlled vehicle-mounted electrical device.
8. the diagnostic method of the controlled vehicle-mounted electrical device according to any one of claim 1-7, it is characterized in that, also comprise the steps: after diagnosis terminates, described diagnostic device generates the diagnostic data corresponding to described online controlled vehicle-mounted electrical device, and stores described diagnostic data.
9. a diagnostic device for controlled vehicle-mounted electrical device, is characterized in that, comprising:
Diagnostic module, for generation of multiple controlled vehicle-mounted electrical device request signal and described request signal is sent to corresponding described controlled vehicle-mounted electrical device, and determine whether online controlled vehicle-mounted electrical device according to the request response signal of the described multiple controlled vehicle-mounted electrical device feedbacks received, and transmit control signal to described online controlled vehicle-mounted electrical device, and according to the described online controlled vehicle-mounted electrical device received, to described online controlled vehicle-mounted electrical device, corresponding diagnostic operation is performed for the feedback response of described control signal and default diagnosis algorithm, wherein, described control signal comprises control command and Diagnostic parameters,
Transport module, described transport module is connected with described controlled vehicle-mounted electrical device with described diagnostic module respectively, for carrying out data transmission between described diagnostic module and described controlled vehicle-mounted electrical device; And
Power module, for powering to described diagnostic module and described transport module.
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| CN105700507B (en) * | 2014-11-26 | 2018-11-20 | 广州汽车集团股份有限公司 | A kind of vehicle network diagnosis control method and device |
| CN105704102B (en) * | 2014-11-26 | 2019-06-07 | 广州汽车集团股份有限公司 | Vehicle network access control method and device |
| CN107037804A (en) * | 2017-04-21 | 2017-08-11 | 深圳市元征科技股份有限公司 | Method, system and the computer-readable recording medium of simulated automotive communication |
| CN110069050A (en) * | 2019-03-22 | 2019-07-30 | 深圳市朗仁科技有限公司 | Automobile polyelectron control unit detection method and device |
| CN113204227B (en) * | 2021-04-26 | 2023-04-18 | 江苏徐工工程机械研究院有限公司 | Cloud collaborative fault diagnosis system and method for layered modular engineering machinery |
| CN113341939B (en) * | 2021-08-04 | 2021-11-30 | 北京智科车联科技有限公司 | Vehicle offline detection system and method |
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