CN105024869A - Automobile OBD communication pin intelligent identification method and device - Google Patents
Automobile OBD communication pin intelligent identification method and device Download PDFInfo
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- CN105024869A CN105024869A CN201410166777.5A CN201410166777A CN105024869A CN 105024869 A CN105024869 A CN 105024869A CN 201410166777 A CN201410166777 A CN 201410166777A CN 105024869 A CN105024869 A CN 105024869A
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Abstract
The invention belongs to the technical field of automobile fault detection, and particularly relates to a method for establishing data communication between a fault detector and an automobile ECU. According to the method, all communication protocols are loaded from a database via the fault detector to transmit data to first group of pins in an OBD connector one by one under the premise that the fault detector and an automobile ECU communication wire are connected. If data connection can be established between the pins and the detector, the pins are communication pins of a system selected by the current detector, or the detector automatically switches to the next group of communication pins of the OBD connector to transmit the data to the OBD connector one by one again so that the communication points are finally locked via repetition of the aforementioned process through continuous cycling and continuous scanning. The complicated operation process and the necessity of changing the connector continuously are reduced for maintenance technical personnel. Meanwhile, working efficiency is enhanced so that rapid, accurate and economical effects are brought to clients.
Description
Art
Technical solution of the present invention relates to checkout equipment that is a kind of and automobile OBD interface communication, automatically can identify automobile OBD communication pin and protocol type.
Background technology
Current known automobile OBD is the abbreviation of OBD, the definition of its diagnose interface terminal is #2, #10 pin is J1850 agreement, #6 & #14 pin is J15765 agreement, and #7, #15 pin is ISO14230 or ISO9141 agreement, and other pins keep for producer to define; The technology that OBD automotive test equipment detects automobile connects by technical staff the jockey matched in advance, and after the absolute path in selected detector, detector can carry out communication with automobile OBD interface.But, finish above in steps after, detector also just may not can set up communication with automobile OBD interface.General detector is setting up the communication link stage with automobile OBD interface, only used the pin of a kind of communications protocol on OBD interface and carry out trial link, make to create link mortality very high, and when establishment links unsuccessfully, site operation personnel obtains the effective communication pin again detecting and confirm OBD interface, feed back to detector research and development engineer and finally confirm failed reason, thereby increase the work of operating personnel and make work become complicated.
Summary of the invention
The high deficiency with simplifying site technology operator work of link mortality is created in order to overcome, the invention provides a kind of scheme of Intelligent Recognition automobile OBD communication pin, it is high that scheme not only solves establishment link mortality, and simplify the work of site technology operator.
The technical solution adopted for the present invention to solve the technical problems is: all (being comprised: J1850 by loading engine disposable loading from database of detector, ISO9141-2, ISO14230, ISO15765 etc.) communications protocol, first start J1850 communication mechanism after completing successively to #2 in OBD joint, #2 & #10 human hair combing waste send and wakes up and link data, if can not create connection, software exchange process will automatically switch to ISO9141 and ISO14230 protocol mechanism successively to #7, #1, #3, #8, #9, #11, #12, #13, #15 human hair combing waste send and wakes up and link data, establishes the link if still fail, and software exchange process continues to switch to ISO15765 protocol mechanism successively to #6 & #14, #3 & #8, #3 & #11, #1 & #4 human hair combing waste send and wakes up and link data, above process is not before software exchange process switches to next agreement, the pin that CPU recognizes the current gating of hardware gating switch sets up communication link failure, then CPU immediately control hardware gating switch be strobed into communication on next root (or group) pin, can communication pin in communication first and agreement CPU preserve immediately, and lock Current protocol and pin uses as current system communication, just can improve the success rate creating link and the operating process simplifying technical staff according to above scheme, more contribute to research and development engineer accurate simultaneously, search the reason that link is failed fast.
Embodiment
As shown in Figure 1, Auto analyzer controls " software exchange protocol process " to J1850 (agreement 1) by CPU, ISO9141-2 (agreement 2), ISO14230 (agreement 3) etc. switches, ensure that any moment only has a protocol software interface to be connected with the one end of " hardware gating switch " simultaneously, the other end of " hardware gating switch " is directly connected with the OBD diagnose connector of automobile computer, it ensures that Auto analyzer data output pins has at any time and only has one (or group) to be connected with (or group) pin of in OBD interface simultaneously, so just can set up unique connection of Auto analyzer software interface and automobile computer OBD interface, switch internal agreement by diagnostic equipment CPU and control the communication pin of gating OBD interface, just intelligent scanning pin can be realized, the accurately function of selected effective pin
Accompanying drawing explanation
Fig. 1 is the method figure of Intelligent Recognition automobile OBD communication pin.
Claims (4)
1. the scheme of an Intelligent Recognition automobile OBD communication pin, in diagnostic equipment, software protocol is connected with automobile OBD joint 16 pins by direct after " software exchange protocol process " and " hardware gating switch " both combinations, software and hardware basis is provided for creating communication link, it is characterized in that: software protocol is by " software exchange protocol process " one end with " hardware gating switch ", and the other end and the OBD interface direct of " hardware gating switch " connect in succession.
2. the scheme of Intelligent Recognition automobile OBD communication pin according to claim 1, it is characterized in that: all accord is that the disposable loading of CPU loading engine completes, and sends data by CPU control " software exchange protocol process " successively cyclic switching agreement to " hardware gating switch ".
3. the scheme of Intelligent Recognition automobile OBD communication pin according to claim 2, it is characterized in that: " hardware gating switch " any moment is gating (or group) pin only, and CPU is according to automobile ECU response and " software exchange protocol process " constantly each communications pins of scan round.
4., according to the scheme of the described Intelligent Recognition automobile OBD communication pin of right 3, it is characterized in that: economize labor time, increase work efficiency.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410166777.5A CN105024869A (en) | 2014-04-24 | 2014-04-24 | Automobile OBD communication pin intelligent identification method and device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410166777.5A CN105024869A (en) | 2014-04-24 | 2014-04-24 | Automobile OBD communication pin intelligent identification method and device |
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| CN105024869A true CN105024869A (en) | 2015-11-04 |
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| CN201410166777.5A Pending CN105024869A (en) | 2014-04-24 | 2014-04-24 | Automobile OBD communication pin intelligent identification method and device |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108255158A (en) * | 2018-01-16 | 2018-07-06 | 深圳市道通科技股份有限公司 | Vehicular diagnostic method and device |
| CN110545220A (en) * | 2019-09-27 | 2019-12-06 | 深圳市鹏巨术信息技术有限公司 | Automobile diagnosis protocol detection method and related product |
| CN111060775A (en) * | 2020-01-10 | 2020-04-24 | 珠海格力电器股份有限公司 | Identification method and device for pin of needle base and air conditioner |
| WO2020238287A1 (en) * | 2019-05-28 | 2020-12-03 | 中兴通讯股份有限公司 | On-board diagnostics device and system, and detection method and readable storage medium |
| CN113064396A (en) * | 2020-01-02 | 2021-07-02 | 北京金奔腾汽车科技有限公司 | Method for intelligently scanning and identifying automobile electric control system |
| CN113406944A (en) * | 2021-05-24 | 2021-09-17 | 深圳市元征未来汽车技术有限公司 | Vehicle diagnosis method, apparatus, device and computer readable storage medium |
| WO2021223521A1 (en) * | 2020-09-14 | 2021-11-11 | 上海星融汽车科技有限公司 | Vehicle diagnosis method and system based on automatic switching of communication protocols, and diagnosis device |
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| CN101458165A (en) * | 2008-12-30 | 2009-06-17 | 深圳市元征软件开发有限公司 | Automobile diagnosis test joint and implementing method thereof |
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| CN201298173Y (en) * | 2008-07-14 | 2009-08-26 | 深圳市元征软件开发有限公司 | Vehicle diagnosis device for displaying vehicle diagnosis information by palm computer product |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108255158A (en) * | 2018-01-16 | 2018-07-06 | 深圳市道通科技股份有限公司 | Vehicular diagnostic method and device |
| WO2019141114A1 (en) * | 2018-01-16 | 2019-07-25 | 深圳市道通科技股份有限公司 | Vehicle diagnosis method and device |
| WO2020238287A1 (en) * | 2019-05-28 | 2020-12-03 | 中兴通讯股份有限公司 | On-board diagnostics device and system, and detection method and readable storage medium |
| CN110545220A (en) * | 2019-09-27 | 2019-12-06 | 深圳市鹏巨术信息技术有限公司 | Automobile diagnosis protocol detection method and related product |
| CN113064396A (en) * | 2020-01-02 | 2021-07-02 | 北京金奔腾汽车科技有限公司 | Method for intelligently scanning and identifying automobile electric control system |
| CN111060775A (en) * | 2020-01-10 | 2020-04-24 | 珠海格力电器股份有限公司 | Identification method and device for pin of needle base and air conditioner |
| WO2021223521A1 (en) * | 2020-09-14 | 2021-11-11 | 上海星融汽车科技有限公司 | Vehicle diagnosis method and system based on automatic switching of communication protocols, and diagnosis device |
| CN113406944A (en) * | 2021-05-24 | 2021-09-17 | 深圳市元征未来汽车技术有限公司 | Vehicle diagnosis method, apparatus, device and computer readable storage medium |
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Application publication date: 20151104 |