CN107765676A - A kind of onboard diagnostic system and its method based on Ethernet - Google Patents
A kind of onboard diagnostic system and its method based on Ethernet Download PDFInfo
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- CN107765676A CN107765676A CN201711059433.4A CN201711059433A CN107765676A CN 107765676 A CN107765676 A CN 107765676A CN 201711059433 A CN201711059433 A CN 201711059433A CN 107765676 A CN107765676 A CN 107765676A
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- 238000000034 method Methods 0.000 title claims abstract description 11
- 239000000976 ink Substances 0.000 claims abstract description 22
- 238000003745 diagnosis Methods 0.000 claims abstract description 19
- 238000004891 communication Methods 0.000 claims abstract description 14
- 230000002452 interceptive effect Effects 0.000 claims abstract description 4
- 238000013501 data transformation Methods 0.000 claims description 2
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 claims 6
- 238000012423 maintenance Methods 0.000 abstract description 9
- 230000005540 biological transmission Effects 0.000 abstract description 6
- 238000005516 engineering process Methods 0.000 abstract description 3
- 238000012360 testing method Methods 0.000 description 8
- 230000008439 repair process Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000012545 processing Methods 0.000 description 3
- 230000006855 networking Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000012790 confirmation Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000002405 diagnostic procedure Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000013507 mapping Methods 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
Classifications
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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
- G05B2219/24—Pc safety
- G05B2219/24065—Real time diagnostics
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- Automation & Control Theory (AREA)
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Abstract
The present invention relates to a kind of onboard diagnostic system and its method based on Ethernet, its technical characterstic is：Onboard diagnostic system includes：Vehicle-mounted Ethernet is used for the transmission of vehicle self communication and diagnostic data；External ethernet network is connected with vehicle-mounted Ethernet and realizes access function；Automobile gateway is connected with vehicle-mounted Ethernet and external ethernet network；Vehicle diagnostics experience database is connected with refreshing diagnostic device interactive information, and the diagnosis that external refresh diagnostic device returns according to diagnostic experiences database writes with a brush dipped in Chinese ink script and the vehicle in vehicle-mounted Ethernet is operated by automobile gateway.The present invention carries out vehicle diagnostics with vehicle-mounted ethernet technology, make car owner, engineer, maintenance personal etc. under ethernet environment or wireless network environment is just realized and the high speed of vehicle diagnosis information is read and changed, it enormously simplify the complexity of operation, cost and the time needed for vehicle diagnosis are also reduced while diagnosis efficiency is improved, realizes the facilitation of vehicle diagnostics.
Description
Technical field
The invention belongs to technical field of automotive electronics, especially a kind of onboard diagnostic system and its side based on Ethernet
Method.
Background technology
With sharply increasing for automobile quantity, auto repair seems more and more important.Orthodox car diagnosis and repair sticks to
Requirement to the time and space, and operation complexity is higher, and efficiency is low, and vehicle diagnosis cost is higher.Market at present
The diagnosis of upper most automobiles is the communication modes realized based on CAN, but car ownership is constantly increasing, and is utilized
CAN diagnoses the drawbacks of relative complex and low efficiency and increasingly shown.With the development of technical field of automotive electronics, how
Improve automobile diagnosis and repair efficiency and reduce the problem of maintenance cost is in the urgent need to address at present.
The content of the invention
It is an object of the invention to overcome the deficiencies in the prior art, propose a kind of onboard diagnostic system based on Ethernet and
Its method, solve the problems, such as that automobile diagnosis and repair inconvenience and cost are too high.
The present invention solves its technical problem and takes following technical scheme to realize：
A kind of onboard diagnostic system based on Ethernet, including：
Vehicle-mounted Ethernet, vehicle self communication and diagnostic data are connected to by automobile gateway and external ethernet
Transmission；
External ethernet network, it is connected by automobile gateway with vehicle-mounted Ethernet and realizes access function；
Automobile gateway, it is connected with vehicle-mounted Ethernet and external ethernet network, realizes outer brush in external ethernet network
Data-transformation facility in new diagnostic device and vehicle-mounted Ethernet between vehicle subnet component；
Vehicle diagnostics experience database, it is connected with refreshing diagnostic device interactive information and provides correct diagnosis for vehicle
Write with a brush dipped in Chinese ink script；
External refresh diagnostic device, it is connected in external ethernet network, the diagnosis brush returned according to diagnostic experiences database
Script is write to operate the vehicle in vehicle-mounted Ethernet by automobile gateway.
The vehicle-mounted Ethernet is by multiple vehicle-mounted sub-networks into the ECU in each onboard system is all connected to accordingly
On DoIP node gateways, multiple DoIP nodes gateways by IP-based network connection together, one of DoIP nodes net
Pass is connected as DoIP fringe nodes gateway with external ethernet network.
DoIP nodes in the vehicle-mounted Ethernet use identical IP version, and IP version is IPv4 or IPv6.
The IP-based network of external ethernet network is formed.
It is connected between the automobile gateway and vehicle-mounted Ethernet using Ethernet physical interface or WLAN interface.
A kind of method of the onboard diagnostic system based on Ethernet, comprises the following steps：
Step 1, confirm that vehicle-mounted Ethernet is in can be by reception state；
Step 2, by electric car gateway control by vehicle-mounted Ethernet, external ethernet network establish communication, keep outer brush
The data of new diagnostic device and subnet inter-module are route；
Step 3, external refresh equipment access the OBD information obtained on ECU by automobile gateway, and send diagnostic experiences to
Database.
Vehicle trouble messages are compared for step 4, diagnostic experiences database, call correct script to be back to outer brush
New equipment.
Step 5, external refresh diagnostic device are sent to automobile gateway and asked, and the ECU diagnosed is performed and writes with a brush dipped in Chinese ink operation.
The advantages and positive effects of the present invention are：
Vehicle-mounted Ethernet, external ethernet network and external refresh diagnostic device are combined together by the present invention, serviceable wagon
Carry ethernet technology and carry out vehicle diagnostics, there is provided 100Mbit/s bandwidth is fast to meet huge data throughout and processing
Degree, makes car owner, engineer, maintenance personal etc. under ethernet environment, is realized even with wireless network environment can to car
The high speed of diagnostic message is read and change, allows the fault diagnosis break through requirement of automobile and the constraint of space requirement, significantly
The complexity of operation is simplified, cost and time needed for vehicle diagnosis are also reduced while diagnosis efficiency is improved, is realized
The facilitations of vehicle diagnostics.
Brief description of the drawings
Fig. 1 is the onboard diagnostic system overall structure diagram of the present invention；
Fig. 2 is the vehicle-mounted Ethernet and external ethernet network connection diagram of the present invention；
Fig. 3 is the single unit vehicle of embodiment 1 and single external test facility example network connection diagram；
Fig. 4 is multiple vehicles of embodiment 2 and single external test facility example network connection diagram.
Embodiment
The embodiment of the present invention is further described below in conjunction with accompanying drawing.
A kind of onboard diagnostic system based on Ethernet, as shown in figure 1, including：
Vehicle-mounted Ethernet, for the transmission of vehicle self communication and diagnostic data, have statement vehicle exist and by
The ability detected, realize the condition for being added to network.
External ethernet network, for realize communication function, having the function that to detect vehicle and establishing communication connection, establish
Connection with vehicle-mounted Ethernet simultaneously realizes access function.
Automobile gateway, as the medium of information exchange transmission, have and realize external refresh diagnostic device and vehicle subnet group
Data route, holding intercommunication between part establish function；Automobile gateway realizes the protocol conversion function between Ethernet.
Vehicle diagnostics experience database, for external refresh diagnostic device interactive information, be vehicle according to diagnostic result
Correctly diagnosis is provided and writes with a brush dipped in Chinese ink script.
External refresh diagnostic device, be connected in external ethernet network, be able to detect that vehicle and with its internal IP component
Effective communication is established, the script information according to the return of diagnostic experiences database is by automobile gateway to the vehicle in vehicle-mounted Ethernet
Carry out the operation such as writing with a brush dipped in Chinese ink.
As shown in Fig. 2 the vehicle-mounted Ethernet by multiple vehicle-mounted sub-networks into the ECU in each onboard system
(Electronic Control Unit, electronic control unit) is all connected on corresponding DoIP nodes gateway, multiple DoIP sections
By IP-based network connection together, one of DoIP nodes gateway is as DoIP fringe nodes gateway and outside for point gateway
Portion's Ethernet is connected.The IP-based network of external ethernet network is formed, and the external testing in external ethernet network is set
It is standby to be connected with DoIP fringe node gateways, external refresh diagnostic device and finished vehicle electronic modular assembly in external ethernet network
(ECU) it is communicatively coupled.External ethernet network and vehicle-mounted Ethernet are IP-based network, the Ethernet by with
Too net physical interface, or Ethernet wave point are communicated.Whole system is diagnosed by IP, and diagnostic service passes through
Ethernet is used, and Ethernet total data rate reaches 100Mbit/s, it is possible to achieve at the high speed real-time Transmission of diagnostic data
Reason.In order to ensure the proper communication of whole system, the MAC Address of all entity parts must be unique, and the institute in In-vehicle networking
There is DoIP to use identical IP version, i.e. IPv4 or IPv6.
The present invention the course of work be：All entities are properly configuration in guarantee system first, now should be in IP network
On be capable of detecting when that all entity states are correct, ensure to establish network connection between vehicle and external refresh diagnostic device.So
Afterwards from outside write with a brush dipped in Chinese ink diagnostic device to automobile gateway send access request after, by gateway provide it with security-related data,
To unlock safety vehicle ECU.The data of vehicles passing in and out subnet can only be sent by the DoIP gateways of connection, as shown in Figure 2.Now
Achieve that predefined message and data exchange sequence between diagnostic device and vehicle ECU are write with a brush dipped in Chinese ink in outside.Write with a brush dipped in Chinese ink and examine from outside
After disconnected device systems send one or more requests to vehicle-mounted IP network, one or more response message from vehicle is obtained,
Data including checking vehicle SBR or progress vehicle diagnostics fault trace.Write with a brush dipped in Chinese ink the vehicle that diagnostic device will obtain in outside
Diagnostic message is transferred to diagnostic experiences database, and being back to outside by the correct script of data base call writes with a brush dipped in Chinese ink diagnostic device, and
Diagnostic device is write with a brush dipped in Chinese ink from outside and writes with a brush dipped in Chinese ink request instruction to gateway transmission, vehicle ECU is write with a brush dipped in Chinese ink after being confirmed.
For security reasons, some use-cases and communication scenes may be refused by vehicle, and this depends on the status bar of vehicle
Part (such as when driving) may need extra security regulations, particularly when performing radio communication.
A kind of on-board diagnostic method based on Ethernet, comprises the following steps：
Step 1, confirm that vehicle-mounted Ethernet is in can be by reception state；
Step 2, vehicle-mounted Ethernet, external ethernet network established into communication, keep external refresh diagnostic device and subnet
The data route of inter-module；
Step 3, external refresh equipment access vehicle diagnostics (OBD) information obtained on ECU by automobile gateway, and transmitted
Give diagnostic experiences database.
Vehicle trouble messages are compared for step 4, diagnostic experiences database, call correct script to be back to outer brush
New equipment.
Step 5, external refresh diagnostic device are sent to automobile gateway and asked, and the ECU diagnosed is performed and writes with a brush dipped in Chinese ink operation.
, it is necessary to be arbitrated by car owner, engineer or maintenance personal during diagnosis, if perform refreshing to vehicle and write with a brush dipped in Chinese ink operation.
Embodiment 1
As shown in figure 3, the present embodiment provides the vehicle diagnosing system of single unit vehicle and single external test facility, outside is surveyed
Examination equipment (notebook) 4 is connected by Ethernet cable 2 with Ethernet switch and wireless local network connecting point 1, waits to diagnose
Vehicle 6 is connected by Ethernet cable 2 with Ethernet switch and wireless local network connecting point 1.External test facility (PDA)
5 are connected by wireless network with accessing with Ethernet switch and wireless local network connecting point 1.
The application environment of the present embodiment is：After having used a period of time for certain vehicle, the vehicle mounted guidance on car is found
The version of system is relatively low, and cartographic information and real road situation are quite different, can not meet to use car demand.The processing of prior art
Method is：Vehicle is sent to 4S points or repair shop carries out mapping module upgrading, not only the time is expended and the upgrade service needs to prop up
Pay certain expense.The present invention processing method be：Car owner can allow vehicle, external refresh diagnostic device dispose in it is same with
Too under networking environment, it can be wired ethernet physical connection, wireless PDA can also be used, start to match, open detection,
After following above-mentioned steps, the script with up-to-date map version is write with a brush dipped in Chinese ink request and sent to gateway by external refresh diagnostic device, obtains
Upgrading is carried out after to the confirmation of car owner to vehicle-mounted navigation map module to write with a brush dipped in Chinese ink.
Embodiment 2
As shown in figure 4, the present embodiment provides the vehicle diagnosing system of multiple vehicles and single external test facility,
External test facility (PC) 4 is connected by Ethernet cable 2 with franchise agency or maintenance shop's network 1, is treated
Diagnosis vehicle 6 and vehicle to be diagnosed 7 are connected by Ethernet cable 2 with franchise agency or maintenance shop's network 1, and outside is surveyed
Logic between examination equipment (PC) 4 and vehicle to be diagnosed 6 is connected as logical channel 9, and vehicle 8 to be diagnosed passes through WLAN3 and franchise
Agency or maintenance shop's network 1 are connected, and the logic between external test facility (PC) 4 and vehicle to be diagnosed 8 is connected as patrolling
Collect passage 10.The webserver 5 is connected by Ethernet cable 2 with franchise agency or maintenance shop's network 1.
The application environment of the present embodiment is：After certain brand vehicle releases market for a period of time, it is found that product quality has one
The defects of determining (software section of electronic system), may cause dangerous consequences under certain driving condition, and now producer needs
" recalling " processing is carried out to the product, existing solution method is：Auto vendor notifies each dealer 4S shops, is notified by them
Car owner, the hidden danger is informed, and handle the time through consultation, vehicle is delivered in shop and handled by car owner；And for being equipped with Ethernet
Onboard diagnostic system vehicle solve method be：Producer need to only provide newest reparation installation kit, and script is write with a brush dipped in Chinese ink under authority
Putting to even engineer individual, an external refresh diagnostic device in shop can operate in network with to more chassis,
Allow more chassis to be in same network environment, performed and write with a brush dipped in Chinese ink by engineer or maintenance personal, it is possible to be efficiently completed and " call together
Return " work.
It is emphasized that embodiment of the present invention is illustrative, rather than it is limited, therefore the present invention is simultaneously
The embodiment described in embodiment is not limited to, it is every to be drawn by those skilled in the art's technique according to the invention scheme
Other embodiment, also belong to the scope of protection of the invention.
Claims (6)
- A kind of 1. onboard diagnostic system based on Ethernet, it is characterised in that including：Vehicle-mounted Ethernet, the biography of vehicle self communication and diagnostic data is connected to by automobile gateway and external ethernet It is defeated；External ethernet network, it is connected by automobile gateway with vehicle-mounted Ethernet and realizes access function；Automobile gateway, it is connected with vehicle-mounted Ethernet and external ethernet network, realizes that external refresh is examined in external ethernet network Data-transformation facility in disconnected equipment and vehicle-mounted Ethernet between vehicle subnet component；Vehicle diagnostics experience database, it is connected with refreshing diagnostic device interactive information and provides correctly diagnosis for vehicle and write with a brush dipped in Chinese ink Script；External refresh diagnostic device, it is connected in external ethernet network, pin is write with a brush dipped in Chinese ink according to the diagnosis that diagnostic experiences database returns This is operated by automobile gateway to the vehicle in vehicle-mounted Ethernet.
- A kind of 2. onboard diagnostic system based on Ethernet according to claim 1, it is characterised in that：The vehicle-mounted ether Network is by multiple vehicle-mounted sub-networks into the ECU in each onboard system is all connected on corresponding DoIP nodes gateway, multiple By IP-based network connection together, one of DoIP nodes gateway is as DoIP fringe node nets for DoIP nodes gateway Pass is connected with external ethernet network.
- A kind of 3. onboard diagnostic system based on Ethernet according to claim 2, it is characterised in that：The vehicle-mounted ether DoIP nodes in network use identical IP version, and IP version is IPv4 or IPv6.
- A kind of 4. onboard diagnostic system based on Ethernet according to claim 1, it is characterised in that：The outside ether The IP-based network of network is formed.
- A kind of 5. onboard diagnostic system based on Ethernet according to any one of Claims 1-4, it is characterised in that：Institute State and be connected between automobile gateway and vehicle-mounted Ethernet using Ethernet physical interface or WLAN interface.
- A kind of 6. method of the onboard diagnostic system based on Ethernet as described in any one of claim 1 to 5, it is characterised in that bag Include following steps：Step 1, confirm that vehicle-mounted Ethernet is in can be by reception state；Step 2, by electric car gateway control by vehicle-mounted Ethernet, external ethernet network establish communication, keep external refresh examine Disconnected equipment and the data of subnet inter-module are route；Step 3, external refresh equipment access the OBD information obtained on ECU by automobile gateway, and send diagnostic experiences data to Storehouse.Vehicle trouble messages are compared for step 4, diagnostic experiences database, call correct script to be back to external refresh and set It is standby.Step 5, external refresh diagnostic device are sent to automobile gateway and asked, and the ECU diagnosed is performed and writes with a brush dipped in Chinese ink operation.
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| CN201711059433.4A CN107765676A (en) | 2017-11-01 | 2017-11-01 | A kind of onboard diagnostic system and its method based on Ethernet |
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| CN201711059433.4A CN107765676A (en) | 2017-11-01 | 2017-11-01 | A kind of onboard diagnostic system and its method based on Ethernet |
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| CN108303964A (en) * | 2017-12-28 | 2018-07-20 | 深圳市元征科技股份有限公司 | A kind of network connector and Vehicular diagnostic method |
| CN108712502A (en) * | 2018-05-29 | 2018-10-26 | 深圳市元征科技股份有限公司 | Vehicle diagnosis method and connector, electronic equipment, storage medium |
| CN109669442A (en) * | 2018-12-25 | 2019-04-23 | 深圳市元征科技股份有限公司 | A kind of method for converting protocol and conversion equipment |
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| CN110989416A (en) * | 2019-08-26 | 2020-04-10 | 西南交通大学 | Whole vehicle control system based on real-time Ethernet bus |
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| CN111324104A (en) * | 2018-12-14 | 2020-06-23 | 现代自动车株式会社 | Gateway processor, control logic of gateway processor, program, and recording medium |
| WO2020238291A1 (en) * | 2019-05-31 | 2020-12-03 | 上海赫千电子科技有限公司 | Automobile ethernet-based unified diagnostic service functional addressing method |
| CN112104591A (en) * | 2019-06-17 | 2020-12-18 | 现代自动车株式会社 | Communication device of controller and communication method thereof |
| CN112269374A (en) * | 2020-11-05 | 2021-01-26 | 恒大新能源汽车投资控股集团有限公司 | Method and device for repairing error data written in electronic control unit |
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Application publication date: 20180306 |