CN105824307A - System and method for distributed offline detection of comprehensive performance of automobile electric-control module - Google Patents
System and method for distributed offline detection of comprehensive performance of automobile electric-control module Download PDFInfo
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- CN105824307A CN105824307A CN201610316661.4A CN201610316661A CN105824307A CN 105824307 A CN105824307 A CN 105824307A CN 201610316661 A CN201610316661 A CN 201610316661A CN 105824307 A CN105824307 A CN 105824307A
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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
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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
- G05B2219/00—Program-control systems
- G05B2219/20—Pc systems
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- G05B2219/24048—Remote test, monitoring, diagnostic
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Abstract
The invention provides a system and method for distributed offline detection of comprehensive performance of an automobile electric-control module. The system and method belong to the field of automobile performance detection. The detection system provided by the invention comprises an industrial personal computer used for detection of the electric-control module, a VCI system, a vehicle-mounted network and an offline detection server, wherein the offline detection server is connected to the industrial personal computer; the industrial personal computer is connected to the vehicle-mounted network by the VCI system; the vehicle-mounted network comprises the electric-control module, a communication bus and a diagnosis interface; and the VCI system is connected to the diagnosis interface of the vehicle-mounted network by a diagnosis line. The system and method provided by the invention have the beneficial effects that through parameter configuration, multiple performance items related to the electric-control module can be detected at a physical working station; finished-automobile offline detection duration is reduced; offline detection efficiency is increased; detection technologies are optimized; flexible production is implemented; and detection requirements of different production bases can be satisfied.
Description
Technical field
The present invention relates to car consumption credit field, particularly relate to a kind of automobile electrically-controlled module synthesis performance distributed off-line detection system and method.
Background technology
Automobile, during production is rolled off the production line, needs new car is carried out properties detection, configuration and parameter adjustment, dispatches from the factory performance requirement reaching automobile.nullWherein automobile rolls off the production line performance detection as shown in Figure 1，Detect including four-wheel aligner、Break away and detect、Headlight detects、Chassis is detected、Speedometer index error detects、Drench with rain detection、Running out the way detects、Road examination detection、ABS(Anti-lockBrakingSystem，Anti-lock braking system) braking performance test、ECU(ElectronicControlUnit，Electronic control unit) Static Detection、ESP(ElectronicStabilityProgram，Body electronics stabilisation systems) yaw-rate sensor calibration、Air bag module information Configuration Online、EPS(ElectricPowerSteering，Electric boosting steering system) rotary angle transmitter initialization、VIN code (VehicleIdentificationNumber，Vehicle identification code) write with a brush dipped in Chinese ink.According to detection mode, detection content and the difference of detection means, whole detection can be divided into two big classes: a class is relevant with automobile mechanical structural behaviour, marks by solid box in FIG；One class is relevant with automobile electrically-controlled module performance, notes by dotted line collimation mark in FIG.The detection relevant with electronic control module performance, write with a brush dipped in Chinese ink including ECU Static Detection, VIN code, the initialization of ESP yaw-rate sensor calibration, EPS rotary angle transmitter, the system such as air bag module information Configuration Online.
Variation along with Automobile Enterprises vehicle and the upgrading to performance, the application of electronic control module is more and more extensive, and Ge great auto vendor, for ensureing self product quality, adds many detections relevant to automobile electrically-controlled module performance.In order to meet the requirement of newly-increased detection, select the detection equipment that different supplier provides, cause auto vendor to detection equipment purchase, develop, manage, safeguard and upgrade and bring great workload and capital cost, improve the production cost of product, add the system development time, expand because of production site needed for layout detection station, losing in view of production line productive temp and station, off-line test station can not be too many.Meanwhile, multisystem also causes whole detection line maintenance difficulties to increase, and probability of malfunction raises, serious service efficiency and the productive temp restricted and affect vehicle testing line, causes huge economic loss to company.
Summary of the invention
Too much for solving the detection that in prior art, automobile electrically-controlled module performance is relevant, cause arranging too much off-line test station, detection overlong time, detection equipment purchase, develop, manage, safeguard and the problem such as scaling difficulty, the present invention provides a kind of automobile electrically-controlled module synthesis performance distributed off-line detection system, additionally provides a kind of detection method based on described detecting system.
Detecting system of the present invention includes for detecting the industrial computer of electronic control module, VCI (VehicleControlInterface, vehicle communication interface) system, In-vehicle networking, off-line test server, described off-line test server is connected with industrial computer, described industrial computer is connected with described In-vehicle networking by VCI system, described In-vehicle networking comprises electronic control module, communication bus and diagnosis interface, and described VCI system is connected with the diagnosis interface of described In-vehicle networking by diagnostics lines.When a physics station carries out the relevant detection of multinomial electronic control module performance, it is only necessary to a set of VCI system, reduce the use of physical hardware, save equipment purchase expense, reduce use cost.
The present invention is further improved, and is provided with off-line test software in described industrial computer, and described off-line test software includes user interface layer: show for data and user inputs；Off-line test application layer: realized selection and the configuration of detection by parameter configuration；Communication layers: interface and In-vehicle networking and off-line test server communication are provided.
The present invention is further improved, described off-line test application layer includes basic module and off-line test module, and described basic module includes: configuration information reads unit, VCI initialization unit, Test database lock unit, off-line test on-line software updating unit, communication link connection unit, vehicle information matching unit, DTC clearing cell, DTC reading unit, communication data record unit and testing result transmitting element；Described off-line test module includes: ECU Static Detection unit, VIN code write with a brush dipped in Chinese ink unit, ESP yaw-rate sensor calibration unit, EPS rotary angle transmitter initialization unit, air bag module information Configuration Online unit.
The present invention is further improved, and described basic module possesses versatility, when the new electronic control module of exploitation is correlated with off-line test function, on the basis of basic module, only need to develop new off-line test module, can complete newly-increased electronic control module performance coherent detection item.In the newly-increased electronic control module performance coherent detection of exploitation during perhaps newly-increased detection vehicle, without additionally buying hardware device, only off-line test software need to be upgraded, reduce upgrade cost.
The present invention is further improved, off-line test management software also it is additionally provided with: be used for managing off-line test software in described industrial computer, carry out Test database maintenance, issue detection function upgrading software, off-line test result is added up, inquires about, is analyzed, form is derived, and described off-line test management software is by network and described off-line test server communication.
The present invention is further improved, described off-line test server storage Test database, off-line test result, detection function upgrading file, manages software for off-line test software with off-line test.
The present invention is further improved, described off-line test server is provided with the connectivity port communicated with after-sale service device, off-line test data base on off-line test server and off-line test result can be sent to after-sale service device by described detecting system, it is achieved sharing of detection data.By testing result with off-line test database synchronization to after sale, decrease application stage detection data test, issue link after sale, reduce development difficulty after sale, shorten the construction cycle.
Present invention also offers a kind of detection method based on said detecting system, comprise the steps:
S1: whether have detection function upgrading file on inquiry off-line test server, if it has, industrial computer obtains detection function upgrading file and carries out inspection software function upgrading, then performs step S2, if nothing, the most directly performs step S2；
S2: read systematic parameter configuration information, carry out system initialization operation；
S3: communication link connects: set up In-vehicle networking, connection between VCI system and industrial computer；
S4: vehicle information matches: carry out vehicle information matches according to vehicle VIN code, obtains vehicle electronic control module communication protocol information；
S5: off-line test data base loads: according to the vehicle information of step S4 coupling, accesses off-line test server, loads the Test database of corresponding vehicle；
S6:VCI system initialization: the Test database information loaded according to step S5, to VCI system initialization；
S7: remove electronic control module historical failure code；
S8: read electronic control module DTC, it is judged that the most faulty code in electronic control module, if it has, then can not carry out electronic control module performance detection, terminates, if it has, perform step S9:
Whether S9: electronic control module correlated performance off-line test, and record diagnosis interaction data, it is judged that break down during detection, if it is, carry out abnormality processing, if it does not, testing result is sent to off-line test server, terminate.
The present invention is further improved, and in step s 9, electronic control module correlated performance off-line test item includes that ECU Static Detection, VIN code are write with a brush dipped in Chinese ink, ESP yaw-rate sensor calibration, EPS rotary angle transmitter initialize, air bag module information Configuration Online.
The present invention is further improved, and in step s 9, abnormality processing includes: electronic control module negative feedback: when receiving electronic control module negative feedback, and prompting operator's current electronic control module state is unsatisfactory for off-line test requirement, is replaced electronic control module；Communication link disconnects: when being not received by In-vehicle networking return data within a period of time, prompting operator's communication line disconnects, and checks connection situation；Comprising DTC in electronic control module, prompting operator's current electronic control module condition is unsatisfactory for, it is impossible to carry out electronic control module performance coherent detection.
Compared with prior art, the invention has the beneficial effects as follows: pass through parameter configuration, the multinomial performance detection that electronic control module is relevant can be carried out on a physics station, shorten the car load off-line test time, promote off-line test efficiency, optimize characterization processes, it is achieved Flexible Production, meet different production bases testing requirement.Use the system architecture of piecemeal, the quick exploitation of the relevant newly-increased performance detection of electronic control module can be realized, shorten the construction cycle, promote development efficiency；Use software and hardware independence framework, can unrestricted choice VCI hardware device, make the compatibility that system has had with universal, reduce the use cost of system.Use the software architecture of layering, software kernels function is separated with core data, it is achieved the quickly upgrading of detecting system and maintenance, reduce maintenance cost；Synchronize Test database on off-line test server, ensure concordance and the real-time of each detection station Test database, reduce each detection station off-line test data base administration difficulty, solve off-line detection system data inconsistence problems that may be present, saved system maintenance cost；Share a vehicle information input source, reduce vehicle information and be manually entered number of times, improve detection efficiency, reduce manual operation intensity and vehicle information error rate for input；When having new model to increase or off-line test function increases, automatically carry out detecting function upgrading, reduce system upgrade difficulty.
Accompanying drawing explanation
Fig. 1 is automobile off-line test item schematic diagram；
Fig. 2 is detecting system structural representation of the present invention；
Fig. 3 is that detecting system of the present invention is layered schematic diagram；
Fig. 4 is inspection software method flow diagram of the present invention.
Detailed description of the invention
With embodiment, the present invention is described in further details below in conjunction with the accompanying drawings.
As shown in Figures 2 and 3, the test system of the present invention includes for detecting the industrial computer of electronic control module, VCI system, In-vehicle networking, off-line test server, described off-line test server is connected with industrial computer, described industrial computer is connected with described In-vehicle networking by VCI system, described In-vehicle networking comprises electronic control module, communication bus and diagnosis interface, and described VCI system is connected with the diagnosis interface of described In-vehicle networking by diagnostics lines.The detection to automobile electrically-controlled module of the present invention has only to a detection station, and when carrying out the relevant detection of multinomial electronic control module performance on a physics station, it is only necessary to a set of VCI system, reduce the use of physical hardware, save equipment purchase expense, reduce use cost.
Off-line test software and off-line test management software it is provided with in industrial computer of the present invention.Described off-line test software and off-line test management software can also be separately positioned on two industrial computers.
This test system components specifically acts on as follows:
In-vehicle networking is detected object, and it comprises electronic control module, communication bus and diagnosis interface, and wherein diagnosis interface is connected with In-vehicle networking for VCI system.
Off-line test software, off-line test management software, the hardware platform managed as electronic control module off-line test and testing result are installed on industrial computer.
VCI system is the telecommunication media between off-line test software and In-vehicle networking, is completed the data conversion of physical layer and data link layer protocol in communication protocol between off-line test software and In-vehicle networking by VCI system.Can realize and based on K line or CAN (ControllerAreaNetwork, controller local area network) the In-vehicle networking communication of line, there is provided standard interface API (application programming interfaces) function for off-line test software transfer, it is achieved the communication between In-vehicle networking and off-line test software.
Off-line test software is the main body of whole system, including user interface layer: show for data and user inputs；Off-line test application layer: realized selection and the configuration of detection by parameter configuration；Communication layers: interface and In-vehicle networking and off-line test server communication are provided.The selection of detection subfunction is realized by parameter configuration, such as ECU Static Detection, VIN code is write with a brush dipped in Chinese ink, ESP yaw-rate sensor calibration, EPS rotary angle transmitter initialize, air bag module information Configuration Online individual event detection function, or wherein several functions detect.Using the framework of software and hardware independence, by calling standard interface API function, lead to VCI system, certainly, the present invention can as required, and such as vehicle bus type, equipment price, serviceability requirement etc. selects VCI hardware device.
The present invention uses the software architecture of piecemeal, described off-line test application layer includes basic module and off-line test module, and described basic module includes: configuration information reads unit, VCI initialization unit, Test database lock unit, off-line test on-line software updating unit, communication link connection unit, vehicle information matching unit, DTC clearing cell, DTC reading unit, communication data record unit and testing result transmitting element；Described off-line test module includes: ECU Static Detection unit, VIN code write with a brush dipped in Chinese ink unit, ESP yaw-rate sensor calibration unit, EPS rotary angle transmitter initialization unit, air bag module information Configuration Online unit.Use the software architecture of layering, software kernels function is separated with core data.Described basic module possesses versatility, when the new electronic control module of exploitation is correlated with off-line test function, on the basis of basic module, only need to develop new off-line test module, can complete newly-increased electronic control module performance coherent detection item.In the newly-increased electronic control module performance coherent detection of exploitation during perhaps newly-increased detection vehicle, without additionally buying hardware device, only off-line test software need to be upgraded, reduce upgrade cost.
Off-line test management software is used for managing off-line test software, carry out Test database maintenance, issuing detection function upgrading software, off-line test result add up, inquires about, is analyzed, form is derived, and described off-line test management software is by network and described off-line test server communication.
Off-line test server storage off-line test result, Test database, inspection software upgraded version.Described off-line test server is provided with the connectivity port communicated with after-sale service device, and the off-line test data base on off-line test server and off-line test result can be sent to after-sale service device by described detecting system, it is achieved sharing of detection data.By testing result with off-line test database synchronization to after sale, decrease application stage detection data test, issue link after sale, reduce development difficulty after sale, shorten the construction cycle.Test database on off-line test server is all used, it is ensured that the concordance of Test database during each detection station off-line test.When newly-increased detection function or newly-increased detection vehicle, issue detection function upgrading software to off-line test server, detection function is upgraded.
As shown in Figure 4, present invention also offers a kind of detection method based on said detecting system, comprise the steps:
S1: off-line test software has detected whether newly-increased detection function or newly-increased vehicle from off-line test server, carry out detecting function upgrading, if had, obtain detection function upgrading file and off-line test software is carried out inspection software function upgrading, then step S2 is performed, if nothing, the most directly perform step S2；
S2: read systematic parameter configuration information, when off-line test software loads, reads systematic parameter configuration information, uploads IP address, works code, information input type, information output type etc. including detection function, detection data, carries out system initialization operation；
S3: communication link connects: vehicle is left to station to be checked by operator, by vehicle-mounted self-diagnosis system OBD (On-BoardDiagnostic, onboard diagnostic system) line connects VCI system and In-vehicle networking, connects VCI system and off-line test software by USB line or Serial Port Line；Off-line test software transfer standard interface API function transmission handshaking information, to VCI system, sets up the connection of off-line test software and VCI system；
S4: vehicle information matches: input operation personnel's code name, vehicle identification code VIN code, off-line test software carries out vehicle information matches by vehicle VIN code, obtaining vehicle electronic control module communication protocol information, this example can communicate based on K line, it is also possible to based on CAN communication；
S5: off-line test data base loads: according to the vehicle information of step S4 coupling, accesses off-line test server, loads the Test database of corresponding vehicle, module；
S6:VCI system initialization: the Test database information loaded according to step S5, to VCI system initialization, including communication bus type selecting, diagnosis address is arranged, and communication baud rate is arranged；
S7: remove electronic control module historical failure code: send removing DTC by VCI system and instruct to electronic control module, the historical failure code of storage in removing electronic control module；
S8: read electronic control module DTC, it is judged that the most faulty code in electronic control module, if it has, then can not carry out electronic control module performance detection, terminates, if it has, perform step S9:
S9: electronic control module correlated performance off-line test, and record diagnosis interaction data: when reading fault-free code in electronic control module, proceed by off-line test.According to the Detection task determined in configuration file, perform electronic control module performance coherent detection, as ECU Static Detection, VIN code write with a brush dipped in Chinese ink, ESP yaw-rate sensor calibration, EPS rotary angle transmitter initialize, air bag module information Configuration Online, or VIN code write with a brush dipped in Chinese ink initialize with EPS rotary angle transmitter, the group item such as ESP yaw-rate sensor calibration and air bag module information Configuration Online.During detection, off-line test software carries out record to diagnosis interaction data simultaneously, it is simple to when correlation function off-line test breaks down, quickly analyze；
Whether break down during judging detection, if, carry out abnormality processing, if not, after completing electronic control module performance coherent detection, be attached with off-line test server by network ip address, port numbers, to be connected establish after, testing result is sent to off-line test server, the judge basis the most qualified as producing vehicle.
In step s 9, abnormality processing includes: electronic control module negative feedback: when receiving electronic control module negative feedback, and prompting operator's current electronic control module state is unsatisfactory for off-line test requirement, is replaced electronic control module；Communication link disconnects: when being not received by In-vehicle networking return data within a period of time, prompting operator's communication line disconnects, and checks connection situation；Comprising DTC in electronic control module, prompting operator's current electronic control module condition is unsatisfactory for, it is impossible to carry out electronic control module performance coherent detection.
The present invention has a following innovative point:
(1) automobile electrically-controlled module synthesis performance distributed off-line detection system is used, pass through parameter configuration, the multinomial performance detection that electronic control module is relevant can be carried out on a physics station, shorten the car load off-line test time, promote off-line test efficiency, optimize characterization processes, it is achieved Flexible Production, meet different production bases testing requirement.Use the system architecture of piecemeal, the quick exploitation of the relevant newly-increased performance detection of electronic control module, during exploitation, the basic module that direct use has been developed can be realized, it is achieved the quick exploitation of newly-increased detection, shorten the construction cycle, promote development efficiency.Use software and hardware independence framework, can unrestricted choice VCI hardware device, make the compatibility that system has had with universal, reduce the use cost of system.Use the software architecture of layering, software kernels function is separated with core data, it is achieved the quickly upgrading of detecting system and maintenance, reduce maintenance cost.
(2) present invention is when carrying out the detection of each electronic control module correlation function, synchronize Test database on off-line test server, ensure concordance and the real-time of each detection station Test database, reduce each detection station off-line test data base administration difficulty, solve off-line detection system data inconsistence problems that may be present, save system maintenance cost.Meanwhile, by testing result with off-line test database synchronization to after sale, decrease application stage detection data test, issue link after sale, reduce development difficulty after sale, shorten the construction cycle.
(3), when the present invention carries out the relevant detection of multinomial electronic control module performance on a physics station, it is only necessary to a set of VCI system, reduce the use of physical hardware, save equipment purchase expense, reduce use cost.In the newly-increased electronic control module performance coherent detection of exploitation during perhaps newly-increased detection vehicle, without additionally buying hardware device, only off-line test software need to be upgraded, reduce upgrade cost.
(4) when the present invention carries out multinomial electronic control module performance coherent detection task, share a vehicle information input source, reduce vehicle information and be manually entered number of times, improve detection efficiency, reduce manual operation intensity and vehicle information error rate for input.
(5) present invention is when having new model to increase or off-line test function increases, and automatically carries out detecting function upgrading, reduces system upgrade difficulty.
The detailed description of the invention of the above is the better embodiment of the present invention; not it is embodied as scope with what this limited the present invention; the scope of the present invention includes being not limited to this detailed description of the invention, and all equivalences made according to the present invention change the most within the scope of the present invention.
Claims (10)
- The most automobile electrically-controlled module synthesis performance distributed off-line detection system, it is characterized in that: include for detecting the industrial computer of electronic control module, VCI system, In-vehicle networking, off-line test server, described off-line test server is connected with industrial computer, described industrial computer is connected with described In-vehicle networking by VCI system, described In-vehicle networking comprises electronic control module, communication bus and diagnosis interface, and described VCI system is connected with the diagnosis interface of described In-vehicle networking by diagnostics lines.
- Detecting system the most according to claim 1, it is characterised in that: being provided with off-line test software in described industrial computer, described off-line test software includes user interface layer: show for data and user inputs；Off-line test application layer: realized selection and the configuration of detection by parameter configuration；Communication layers: interface and In-vehicle networking and off-line test server communication are provided.
- Detecting system the most according to claim 2, it is characterized in that: described off-line test application layer includes basic module and off-line test module, described basic module includes: configuration information reads unit, VCI initialization unit, Test database lock unit, off-line test on-line software updating unit, communication link connection unit, vehicle information matching unit, DTC clearing cell, DTC reading unit, communication data record unit and testing result transmitting element；Described off-line test module includes: ECU Static Detection unit, VIN code write with a brush dipped in Chinese ink unit, ESP yaw-rate sensor calibration unit, EPS rotary angle transmitter initialization unit, air bag module information Configuration Online unit.
- Detecting system the most according to claim 3, it is characterized in that: described basic module possesses versatility, when the new electronic control module of exploitation is correlated with off-line test function, on the basis of basic module, only need to develop new off-line test module, newly-increased electronic control module performance coherent detection item can be completed.
- Detecting system the most according to claim 2, it is characterized in that: be also additionally provided with off-line test management software in described industrial computer: be used for managing off-line test software, carry out Test database maintenance, issue detection function upgrading software, off-line test result is added up, inquires about, is analyzed, form is derived, and described off-line test management software is by network and described off-line test server communication.
- Detecting system the most according to claim 5, it is characterised in that: described off-line test server storage Test database, off-line test result, detection function upgrading file, manage software for off-line test software with off-line test.
- Detecting system the most according to claim 6, it is characterized in that: described off-line test server is provided with the connectivity port communicated with after-sale service device, off-line test data base on off-line test server and off-line test result can be sent to after-sale service device by described detecting system, it is achieved sharing of detection data.
- 8. realize the method for detecting system described in any one of claim 1-7, it is characterised in that comprise the steps:S1: whether have detection function upgrading file on inquiry off-line test server, if it has, industrial computer obtains detection function upgrading file and carries out inspection software function upgrading, then performs step S2, if nothing, the most directly performs step S2；S2: read systematic parameter configuration information, carry out system initialization operation；S3: communication link connects: set up In-vehicle networking, connection between VCI system and industrial computer；S4: vehicle information matches: carry out vehicle information matches according to vehicle VIN code, obtains vehicle electronic control module communication protocol information；S5: off-line test data base loads: according to the vehicle information of step S4 coupling, accesses off-line test server, loads the Test database of corresponding vehicle；S6:VCI system initialization: the Test database information loaded according to step S5, to VCI system initialization；S7: remove electronic control module historical failure code；S8: read electronic control module DTC, it is judged that the most faulty code in electronic control module, if it has, then can not carry out electronic control module performance detection, terminates, if it has, perform step S9:Whether S9: electronic control module correlated performance off-line test, and record diagnosis interaction data, it is judged that break down during detection, if it is, carry out abnormality processing, if it does not, testing result is sent to off-line test server, terminate.
- Detection method the most according to claim 8, it is characterized in that: in step s 9, electronic control module correlated performance off-line test item includes that ECU Static Detection, VIN code are write with a brush dipped in Chinese ink, ESP yaw-rate sensor calibration, EPS rotary angle transmitter initialize, air bag module information Configuration Online.
- Detection method the most according to claim 8, it is characterized in that: in step s 9, abnormality processing includes: electronic control module negative feedback: when receiving electronic control module negative feedback, and prompting operator's current electronic control module state is unsatisfactory for off-line test requirement, is replaced electronic control module；Communication link disconnects: when being not received by In-vehicle networking return data within a period of time, prompting operator's communication line disconnects, and checks connection situation；Comprising DTC in electronic control module, prompting operator's current electronic control module condition is unsatisfactory for, it is impossible to carry out electronic control module performance coherent detection.
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