CN103455022A - Method and device for diagnosing vehicle-mounted electronic control devices - Google Patents

Method and device for diagnosing vehicle-mounted electronic control devices Download PDF

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Publication number
CN103455022A
CN103455022A CN2012101800490A CN201210180049A CN103455022A CN 103455022 A CN103455022 A CN 103455022A CN 2012101800490 A CN2012101800490 A CN 2012101800490A CN 201210180049 A CN201210180049 A CN 201210180049A CN 103455022 A CN103455022 A CN 103455022A
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controlled vehicle
mounted electrical
electrical device
diagnostic
online
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CN103455022B (en
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孙钢
赵祥日
申佳佳
张春淮
王可峰
马建新
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Beiqi Foton Motor Co Ltd
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Beiqi Foton Motor Co Ltd
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Abstract

The invention provides a method for diagnosing vehicle-mounted electronic control devices. The method includes the steps that a diagnosing device sends request signals to the plurality of vehicle-mounted electronic control devices through CAN buses and judges whether the vehicle-mounted electronic control devices are online vehicle-mounted electronic control devices or not according to received request response signals fed back through the vehicle-mounted electronic control devices, the diagnosing device sends control signals to the online vehicle-mounted electronic control devices, each online vehicle-mounted electronic control device judges whether each vehicle-mounted electronic control device satisfies the condition of a control signal or not after receiving the control signal and sends a feedback response to the diagnosing device according to the judgment result, and the diagnosing device executes the corresponding diagnosing operation on the online vehicle-mounted electronic control devices according to the feedback responses of the vehicle-mounted electronic control devices and a preset diagnosing algorithm. According to the method, the vehicle-mounted electronic control devices of different types can be simultaneously diagnosed, the modularization and platform diagnosing method is achieved, and the flexibility, the usability and the reliability of diagnosis of the vehicle-mounted electronic control devices are improved.

Description

A kind of diagnostic method of controlled vehicle-mounted electrical device and device
Technical field
The present invention relates to make automobile electrically-controlled product scope, 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, incorporated electronic technology.Automobile electronics with its high precision, high-speed, control the characteristics such as flexible and progressively replacing traditional mechanical hook-up.In order to guarantee the reliability of automobile electronics, troubleshooting capability flexibly, must carry out discontinuity, necessary diagnosis to automobile electrically-controlled product.
The fault diagnosis technology of existing automobile mounted electric control gear has following shortcoming:
(1) device designed according to most of fault diagnosis technologies only, for independent unique automobile electrically-controlled product, does not have good extendability.Diagnostic device is accompanied by product and produces and produce, and finishes and finishes, and life cycle is limited, and recycling property is bad, and dirigibility is not strong.
(2) during a plurality of controller of existing diagnostic techniques inline diagnosis, must be diagnosed controller successively, or indirectly be diagnosed by other controller, reliability and real-time are bad.
(3) because current automobile electrically-controlled product has the principle variability, structure diversity, the performance diversity, the fault time variation, description complexity, existing diagnostic techniques can't 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 purpose of the present invention is to propose a kind of diagnostic method of controlled vehicle-mounted electrical device, can reach the effect of simultaneously a plurality of dissimilar automobile mounted electronic-controlled installations being diagnosed, realize the diagnostic method of modularization, hardware and software platform, improved widely dirigibility, ease for use, the reliability of Vehicular electronic control unit diagnosis.Second purpose of the present invention is to propose a kind of diagnostic device of controlled vehicle-mounted electrical device.
To achieve these goals, the embodiment of first aspect present invention has proposed a kind of diagnostic method of controlled vehicle-mounted electrical device, comprise the following steps: diagnostic device sends request signal by the CAN bus to a plurality of controlled vehicle-mounted electrical devices, and determines whether online controlled vehicle-mounted electrical device according to the request response signal of the described a plurality of controlled vehicle-mounted electrical device feedbacks that receive; If so, described diagnostic device transmits control signal to described online controlled vehicle-mounted electrical device; Each described online controlled vehicle-mounted electrical device, after the described control signal received from described diagnostic device, judges whether to meet the condition of described control signal, according to judged result, to described diagnostic device, sends feedback response; Described diagnostic device is carried out 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.
Diagnostic method according to the controlled vehicle-mounted electrical device of the embodiment of the present invention, can reach the effect of simultaneously a plurality of dissimilar automobile mounted electronic-controlled installations being diagnosed, realize the diagnostic method of modularization, hardware and software platform, improved widely dirigibility, ease for use, the reliability of Vehicular electronic control unit diagnosis.
In one embodiment of the invention, described diagnostic device automatically sends the described request signal by described CAN bus to described a plurality of controlled vehicle-mounted electrical devices; Perhaps the user manually controls described diagnostic device and sends the described request signal by described CAN bus to described a plurality of controlled vehicle-mounted electrical devices.
In one embodiment of the invention, determine whether online controlled vehicle-mounted electrical device according to the request response signal of the described a plurality of controlled vehicle-mounted electrical device feedbacks that receive, comprise: when the request response signal that receives described controlled vehicle-mounted electrical device feedback when described diagnostic device is positive response signal, 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, by described CAN bus, to described diagnostic device, send and just responding the answer of CAN frame, otherwise, send Negative Acknowledgment CAN frame by described CAN bus 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 to the parameter of the described feedback response of described diagnostic device transmission according to described control signal.
In one embodiment of the invention, the parameter of described feedback response comprises: the mode, type, size and the speed that send described feedback response.
In one embodiment of the invention, described diagnostic device is carried out 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 that sends the answer of Negative Acknowledgment CAN frame, described diagnostic device is adjusted after described control signal and again to described online controlled vehicle-mounted electrical device, is sent the control signal after adjusting, or abandons not meeting the online controlled vehicle-mounted electrical device of the condition of described control signal; Just responding for sending the described online controlled vehicle-mounted electrical device that the CAN frame is answered, 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: that, after diagnosis finishes, 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 has proposed a kind of diagnostic device of controlled vehicle-mounted electrical device, comprise: diagnostic module, be sent to corresponding described controlled vehicle-mounted electrical device for generation of the request signal of a plurality of controlled vehicle-mounted electrical devices and by the described request signal, and determine whether online controlled vehicle-mounted electrical device according to the request response signal of the described a plurality of controlled vehicle-mounted electrical device feedbacks that receive, and transmit control signal to described online controlled vehicle-mounted electrical device, and for the feedback response of described control signal and default diagnosis algorithm, described online controlled vehicle-mounted electrical device is carried out to corresponding diagnostic operation according to the described online controlled vehicle-mounted electrical device received, transport module, described transport module is connected with described controlled vehicle-mounted electrical device with described diagnostic module respectively, between described diagnostic module and described controlled vehicle-mounted electrical device, carrying out data transmission, power module, for powering to described diagnostic module and described transport module.
Diagnostic device according to the controlled vehicle-mounted electrical device of the embodiment of the present invention, can reach the effect of simultaneously a plurality of dissimilar automobile mounted electronic-controlled installations being diagnosed, realize the diagnostic method of modularization, hardware and software platform, improved widely dirigibility, ease for use, the reliability of Vehicular electronic control unit diagnosis.
Additional aspect of the present invention and advantage part in the following description provide, and part will become obviously from the following description, or recognize by practice of the present invention.
The accompanying drawing explanation
Above-mentioned and/or additional aspect of the present invention and advantage are from obviously and easily understanding becoming the description of embodiment in conjunction with following accompanying drawing, wherein:
The process flow diagram of the diagnostic method of the controlled vehicle-mounted electrical device that Fig. 1 is one embodiment of the invention;
The structural representation of the CAN bus that Fig. 2 is one embodiment of the invention;
The operational scheme schematic diagram of the diagnostic method of the controlled vehicle-mounted electrical device that Fig. 3 is one embodiment of the invention;
The topological structure schematic diagram of diagnostic device and a plurality of controlled vehicle-mounted electrical devices in the diagnostic procedure that Fig. 4 is one embodiment of the invention;
The schematic diagram of the diagnostic device of the controlled vehicle-mounted electrical device that Fig. 5 is one embodiment of the invention; And
The schematic diagram of the diagnostic device of the controlled vehicle-mounted electrical device that Fig. 6 is another embodiment of the present invention.
Embodiment
Below describe embodiments of the invention in detail, the example of described embodiment is shown in the drawings, and wherein same or similar label means same or similar element or the element with identical or similar functions from start to finish.Be exemplary below by the embodiment be described with reference to the drawings, only for explaining the present invention, and can not be interpreted as limitation of the present invention.
In description of the invention, it will be appreciated that, term " first ", " second " be only for describing purpose, and can not be interpreted as indication or hint relative importance.
In description of the invention, it should be noted that, unless otherwise clearly defined and limited, term " installation ", " being connected ", " connection " should be done broad understanding, for example, can be to be fixedly connected with, and can be also to removably connect, or connect integratedly; Can be mechanical connection, can be also to be electrically connected to; Can be directly to be connected, also can indirectly be connected by intermediary, can be the connection of two element internals.For the ordinary skill in the art, can concrete condition understand above-mentioned term concrete meaning in the present invention.
As shown in Figure 1, the diagnostic method according to the controlled vehicle-mounted electrical device of the embodiment of first aspect present invention comprises the following steps:
S101: diagnostic device is by CAN(Controller Area Network, controller local area network) bus sends request signal to a plurality of controlled vehicle-mounted electrical devices, and determines whether online controlled vehicle-mounted electrical device according to the request response signal of a plurality of controlled vehicle-mounted electrical device feedbacks that receive.
S1011: diagnostic device automatically sends request signal by the CAN bus to a plurality of controlled vehicle-mounted electrical devices; Perhaps the user manually controls diagnostic device and sends request signal by the CAN bus to a plurality of controlled vehicle-mounted electrical devices.
CAN communication protocol is a kind of communication protocol of broadcast type, passes through ID(Identification) carry out nondestructive arbitration.As shown in Figure 2, the CAN bus adopts OSI(Open System Interconnect, 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 has facilitated engineering modularization, has reduced complexity, and program is more easily revised, and the speed of product development is faster, and every layer is utilized next-door neighbour's lower floor to serve, 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 configuration-system, by each communication layers independent of CAN, the unified diagnosing protocol based on the CAN network is formulated and followed to various dissimilar automobile electrically-controlled products, make diagnostic method modularization, hardware and software platform, the stratified fault diagnosis module of design tool, make product can pass through configuration, to adapt to the diagnosis of dissimilar automobile electrically-controlled product.The structure of each CAN network layer of independent design respectively, transmit data by the variable in service between at all levels, but the diagnostic horizon of design separate configurations completes the diagnosis for different controlled vehicle-mounted electrical products.
S1012: after online controlled vehicle-mounted electrical device receives request signal, respond positive response signal as request response signal, identify this controlled vehicle-mounted electrical device online.
S1013: when the request response signal that receives controlled vehicle-mounted electrical device feedback when diagnostic device is positive response signal, judge that this controlled vehicle-mounted electrical device is for online vehicle-mounted electric control gear.
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 control command and Diagnostic parameters are set, reaches the effect that a plurality of controlled vehicle-mounted electrical devices are carried out to the parallel diagnosis processing.
S103: each online controlled vehicle-mounted electrical device, after receiving the control signal of self-diagnosis system, judges whether to meet the condition of this control signal, according to judged result, to diagnostic device, sends feedback response.
Online controlled vehicle-mounted electrical device periodically detects the control signal of described diagnostic device, judges whether to meet the condition of this control signal, when meeting, by the CAN bus, to diagnostic device, sends and is just responding the feedback response that the CAN frame is answered; Otherwise, by the CAN bus, to diagnostic device, send the feedback response that Negative Acknowledgment CAN frame is answered.
And online controlled vehicle-mounted electrical device, according to control signal, is selected to the parameter of the feedback response of diagnostic device transmission.Wherein, the parameter of feedback response comprises: the mode, type, size and the speed that send feedback response.
S104: diagnostic device is carried out 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 that sends Negative Acknowledgment CAN frame and answer, diagnostic device sends the control signal after adjusting to online controlled vehicle-mounted electrical device after adjusting control signal again, or abandons not meeting the online controlled vehicle-mounted electrical device of the condition of control signal; Just responding for sending the online controlled vehicle-mounted electrical device that the CAN frame is answered, 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 below described as shown in Figure 3.
S301: check that in Automobile, each device connects correct and normally powers on.
S302: manual/auto order, the online controlled vehicle-mounted electrical product response request command of sending request of diagnostic device.
S303: diagnostic device sends to online controlled vehicle-mounted electrical device by control signal.
S304: whether online controlled vehicle-mounted electrical product judgement oneself meets the requirement of control signal, if meet, carries out S305; If do not meet, carry out S306.
S305: online controlled vehicle-mounted electrical device sends and is just responding the answer of CAN frame to diagnostic device.
S306: online controlled vehicle-mounted electrical device sends Negative Acknowledgment CAN frame to diagnostic device and answers.
S307: diagnostic device judges whether to abandon not meeting the online controlled vehicle-mounted electrical device of control signal condition according to the feedback signal of online controlled vehicle-mounted electrical device, if abandon, carries out S310; Otherwise, carry out S308.
S308: adjust control signal, adjust control command and Diagnostic parameters.
S309: diagnosed according to the feedback signal of online controlled vehicle-mounted electrical device.
S310: diagnostic device generates the diagnostic data corresponding to the controlled vehicle-mounted electrical device, and the storage diagnostic data, draws diagnostic result and report.
Be stored in the diagnostic data in diagnostic device, can supply to extract at any time and carry out off-line analysis.
Diagnostic method according to the controlled vehicle-mounted electrical device of the embodiment of the present invention, can reach the effect of simultaneously a plurality of dissimilar automobile mounted electronic-controlled installations being diagnosed, realize the diagnostic method of modularization, hardware and software platform, improved widely dirigibility, ease for use, the reliability of Vehicular electronic control unit diagnosis.
In one embodiment of the invention, diagnostic device also has the wrong final functions such as control, diagnostic data management in real time that detect, diagnose.
In one embodiment of the invention, shown in the topological structure schematic diagram of the online controlled vehicle-mounted electrical device that in diagnostic procedure, diagnostic device and each acceptance are diagnosed as described in Figure 4, 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, n online controlled vehicle-mounted electrical device altogether.
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 diagnosis beginning, carry out and end, and form a kind of principal and subordinate's attribute of a relation between each controlled vehicle-mounted electrical device, it is a kind of stable structure, be beneficial to expansion, and can complete online or off-line, a diagnosis to a plurality of controlled vehicle-mounted electrical devices; By the communication exchanges mode of " question-response " formula, control the quantity of CAN frame traffic on the CAN bus; By the final testing mechanism of the mistake of diagnostic device, on unified CAN bus, for wrong judgement, by the memory module carried on diagnostic device, can complete the analysis of off-line and the playback of data; CAN communication layers structure by stratification, improved reliability, realized modularization, hardware and software platform.
As shown in Figure 5, the diagnostic device according to the controlled vehicle-mounted electrical device of the embodiment of second aspect present invention, comprising: diagnostic module 510, transport module 520 and power module 530.
Particularly, diagnostic module 510 is for generation of the request signal of a plurality of controlled vehicle-mounted electrical devices 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 a plurality of controlled vehicle-mounted electrical devices feed 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, online controlled vehicle-mounted electrical device is carried out to corresponding diagnostic operation.Wherein, control signal comprises control command and Diagnostic parameters.
Transport module 520 is connected with the controlled vehicle-mounted electrical device with diagnostic module 510 respectively, between diagnostic module 510 and controlled vehicle-mounted electrical device, carrying out data transmission.
In one embodiment of the invention, transport module 520 adopts the CAN bus.
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 comprise memory module 540, the diagnostic data generated for storing diagnostic module 510.
In one embodiment of the invention, diagnostic module 510 produces the request signal of a plurality of controlled vehicle-mounted electrical devices 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 according to this positive response signal this controlled vehicle-mounted electrical device is for online.The diagnostic module 510 controlled vehicle-mounted electrical device online to this by transport module 520 transmits control signal.When the condition of online controlled vehicle-mounted electrical device judgement control signal meets, send and just responding the answer of CAN frame to diagnostic module 510 by transport module 520, after diagnostic module 510 receives this and just responding the CAN frame and answer, this online controlled vehicle-mounted electrical device is carried out to Normal Diagnosis; When online controlled vehicle-mounted electrical device judgement does not meet the condition of control signal, sending Negative Acknowledgment CAN frame by transport module 520 to diagnostic module 510 answers, after diagnostic module 510 receives the answer of this Negative Acknowledgment CAN frame, again by transport module 520, to this online controlled vehicle-mounted electrical device, send the control signal after adjusting after adjusting control signal, or abandon this online controlled vehicle-mounted electrical device.After diagnosis completes, the diagnostic data that diagnostic module 510 produces corresponding to this online controlled vehicle-mounted electrical device, and this diagnostic data is stored in memory module 540.
Diagnostic device according to the controlled vehicle-mounted electrical device of the embodiment of the present invention, can reach the effect of simultaneously a plurality of dissimilar automobile mounted electronic-controlled installations being diagnosed, realize the diagnostic method of modularization, hardware and software platform, improved widely dirigibility, ease for use, the reliability of Vehicular electronic control unit diagnosis.
In the description of this instructions, the description of reference term " embodiment ", " some embodiment ", " example ", " concrete example " or " some examples " etc. means to be contained at least one embodiment of the present invention or example in conjunction with specific features, structure, material or the characteristics of this embodiment or example description.In this manual, the schematic statement of above-mentioned term not necessarily referred to identical embodiment or example.And the specific features of description, structure, material or characteristics can be with suitable mode combinations in any one or more embodiment or example.
Although illustrated and described embodiments of the invention, those having ordinary skill in the art will appreciate that: in the situation that do not break away from principle of the present invention and aim can be carried out multiple variation, modification, replacement and modification to these embodiment, scope of the present invention is by claim and be equal to and limit.

Claims (10)

1. the diagnostic method of a controlled vehicle-mounted electrical device, is characterized in that, comprises the following steps:
Diagnostic device sends request signal by the CAN bus to a plurality of controlled vehicle-mounted electrical devices, and determines whether online controlled vehicle-mounted electrical device according to the request response signal of the described a plurality of controlled vehicle-mounted electrical device feedbacks that receive;
If so, described diagnostic device transmits control signal to described online controlled vehicle-mounted electrical device;
Each described online controlled vehicle-mounted electrical device, after the described control signal received from described diagnostic device, judges whether to meet the condition of described control signal, according to judged result, to described diagnostic device, sends feedback response; And
Described diagnostic device is carried out 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 the described request signal by described CAN bus to described a plurality of controlled vehicle-mounted electrical devices; Perhaps the user manually controls described diagnostic device and sends the described request signal by described CAN bus to described a plurality of controlled vehicle-mounted electrical devices.
3. the diagnostic method of controlled vehicle-mounted electrical device as claimed in claim 1, is characterized in that, according to the request response signal of the described a plurality of controlled vehicle-mounted electrical device feedbacks that receive, determines whether online controlled vehicle-mounted electrical device, comprises the steps:
When the request response signal that receives described controlled vehicle-mounted electrical device feedback when described diagnostic device is positive response signal, 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 control signal comprises control command and Diagnostic parameters.
5. 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, by described CAN bus, to described diagnostic device, send and just responding the answer of CAN frame, otherwise, send Negative Acknowledgment CAN frame by described CAN bus to described diagnostic device and answer.
6. 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 to the parameter of the described feedback response of described diagnostic device transmission according to described control signal.
7. the diagnostic method of controlled vehicle-mounted electrical device as claimed in claim 6, is characterized in that, the parameter of described feedback response comprises: the mode, type, size and the speed that send described feedback response.
8. the diagnostic method of controlled vehicle-mounted electrical device as claimed in claim 5, it is characterized in that, described diagnostic device is carried out 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 that sends the answer of Negative Acknowledgment CAN frame, described diagnostic device is adjusted after described control signal and again to described online controlled vehicle-mounted electrical device, is sent the control signal after adjusting, or abandons not meeting the online controlled vehicle-mounted electrical device of the condition of described control signal;
Just responding for sending the described online controlled vehicle-mounted electrical device that the CAN frame is answered, described diagnostic device carries out Normal Diagnosis to described online controlled vehicle-mounted electrical device.
9. as the diagnostic method of the described controlled vehicle-mounted electrical device of any one in claim 1-8, it is characterized in that, also comprise the steps: that, after diagnosis finishes, described diagnostic device generates the diagnostic data corresponding to described online controlled vehicle-mounted electrical device, and stores described diagnostic data.
10. the diagnostic device of a controlled vehicle-mounted electrical device, is characterized in that, comprising:
Diagnostic module, be sent to corresponding described controlled vehicle-mounted electrical device for generation of the request signal of a plurality of controlled vehicle-mounted electrical devices and by the described request signal, and determine whether online controlled vehicle-mounted electrical device according to the request response signal of the described a plurality of controlled vehicle-mounted electrical device feedbacks that receive, and transmit control signal to described online controlled vehicle-mounted electrical device, and for the feedback response of described control signal and default diagnosis algorithm, described online controlled vehicle-mounted electrical device is carried out to corresponding diagnostic operation according to the described online controlled vehicle-mounted electrical device received;
Transport module, described transport module is connected with described controlled vehicle-mounted electrical device with described diagnostic module respectively, between described diagnostic module and described controlled vehicle-mounted electrical device, carrying out data transmission; And
Power module, for powering to described diagnostic module and described transport module.
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