CN202975792U - Miniature code reading card capable of supporting full-system diagnosis function - Google Patents
Miniature code reading card capable of supporting full-system diagnosis function Download PDFInfo
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- CN202975792U CN202975792U CN 201220473399 CN201220473399U CN202975792U CN 202975792 U CN202975792 U CN 202975792U CN 201220473399 CN201220473399 CN 201220473399 CN 201220473399 U CN201220473399 U CN 201220473399U CN 202975792 U CN202975792 U CN 202975792U
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Abstract
The utility model provides a miniature code reading card capable of supporting a full-system diagnosis function, which comprises the following components: a MCU control module, a display module which is electrically connected with the MCU control module, a diagnosis interface circuit module which is electrically connected with the MCU control module, a signal channel switching circuit module which is electrically connected with the diagnosis interface module, and a joint module which is electrically connected with the signal channel switching circuit module. A JV700 chip is adopted for the signal channel switching circuit module. The joint module is used for connecting with a diagnosis interface of an automobile. Through switching signals of an automotive electric control system to different pins of the diagnosis interface of the automobile by the signal channel switching circuit module in which the JV700 chip is adopted according to the type of the diagnosis system, function diagnosis for full system of the automobile is realized. The miniature code reading card has the following advantages: low price, small weight, small volume, high suitability for personal car owner, capability of realizing full-system diagnosis function for the automobile electric control system, and capability of satisfying market requirement.
Description
Technical field
The utility model relates to the vehicle diagnosis field, relates in particular to a kind of small-sized code reading card of supporting the wide diagnosis function.
Background technology
As far back as 1994, AIAE American institute of automobile engineers (SAE) proposed the standard criterion of the second generation with car self-diagnosable system (OBD-II), and after this, the standard of OBD-II is just in continuous development.Even to this day, 16PIN OBD vehicle diagnosis seat has become the sole criterion of present vehicle diagnosis interface.The unification of vehicle diagnosis interface standard makes and utilizes the single face form to realize that the purpose of the different electric-control systems that many cars are being carried out fault diagnosis becomes possibility, and this will greatly reduce the huge trouble that the maintenance personal brings because of the joint problem when using diagnostic equipment.
At present, common small-sized code reading card can only be diagnosed automobile engine system, and can not diagnose other electric-control system except engine system.The underlying cause be common small-sized code reading card can not provide in the realization of hardware from a plurality of different electric-control systems between the physical connection of communication simultaneously.And can only just can carry out exchanges data with all automobiles with unified 16pin diagnose connector by a general OBD16 vehicle diagnosis joint at general comprehensive Auto analyzer, realize the purpose that each different electric-control systems of automobile are diagnosed.But due to its high cost, dirigibility is inadequate, and this implementation does not more access widespread use.Particularly for the Auto analyzer towards individual car owner, not only require the diagnostic equipment easy to use and flexible, require simultaneously cost of products lower, can satisfy individual car owner's purchase holding capacity, and the scheme of using on comprehensive Auto analyzer at present realizes that not only circuit is complicated, cost is high, also make Realization of Product after volume large, be inconvenient to carry.
Generally the equipment for OBD can only communicate with the automobile engine system of supporting OBD, can not communicate by letter with other electric-control system on automobile, therefore also just can't realize the fault diagnosis functions to all electric-control systems of automobile.We know, Hyundai Motor electronization degree is more and more higher, except engine system, also have a lot of other electric-control systems, as wheel box, and antilock brake, air bag etc., on more high-grade automobile, electric-control system is more.Therefore, in case automobile produces fault, check that only engine system is inadequate often.
Although comprehensive automobile fault diagnostic apparatus complete function, it is expensive, and body weight is excessive, be not suitable for individual car owner and use, and general common small-sized code reading card product can not be diagnosed the electric-control system except engine system.
Separately, see also Fig. 1, be the schematic diagram of 16pin diagnose connector on existing automobile, its each pinout is as follows:
This shows, the OBDII standard is only to 2,4,5,6,7,10,14,15 of OBD16pin type vehicle diagnosis seat, and 16 pin have been done clearly definition, and other 1,3,8,9,11,12,13 signal pins are reserved to the automaker.
Due to the OBDII standard not only to the shape of vehicle diagnosis seat, signal pins is stipulated, also the communication protocol signal between automobile and diagnostic equipment is also defined simultaneously, the protocol type of these communications comprises: SAEJ1850PWM, SAEJ1850VPW, KWP2000, ISO9141-2, ISO15765-4CAN.Keep for the self-defining signal pins of depot for those, they can be designed to be used as the physical interface that other electric-control system of automobile and outside Auto analyzer carry out data communication by the vehicular manufacturer.
The utility model content
The purpose of this utility model is to provide a kind of small-sized code reading card of supporting the wide diagnosis function, low price, and body weight is light, and volume is little, is fit to individual car owner and uses, and can realize automobile electric control system wide diagnosis function.
For achieving the above object, the utility model provides a kind of small-sized code reading card of supporting the wide diagnosis function, comprise: MCU control module, the display module that is electrically connected with the MCU control module, the diagnose interface circuit module that is electrically connected with the MCU control module, the signalling channel commutation circuit module that is electrically connected with the diagnose interface circuit module, and with the joint module of signalling channel commutation circuit module electric connection, described signalling channel commutation circuit module adopts the JV700 chip, and described joint module is used for being connected with the diagnose interface of automobile.
Also comprise the Keysheet module that is electrically connected with the MCU control module, be used for carrying out function selection and correlation parameter and set.
Described Keysheet module is electrically connected to the MCU control module by port expander.
Described display module comprises a LCDs, and described display module is used for showing diagnostic result and function menu option.
Described joint module is OBDII diagnosis joint.
Also comprise a memory module that is electrically connected with the MCU control module.
Described memory module stores liquid crystal display driver, diagnostic routine, algorithm and diagnostic result.
the beneficial effects of the utility model: the signalling channel commutation circuit module of the small-sized code reading card that the utility model is supported the wide diagnosis function by adopting the JV700 chip switches to each signal of automobile electric control system difference according to diagnostic system on the different pin of vehicle diagnosis interface, finally communicated by letter with dissimilar automobile electric control system by software control, obtain the parameter of every electric-control system of automobilism, realized the system-wide functional diagnosis of automobile, this small-sized code reading card low price, body weight is light, volume is little, being fit to individual car owner uses, and can realize automobile electric control system wide diagnosis function, the demand that is fit to market.
In order further to understand feature of the present utility model and technology contents, see also following about detailed description of the present utility model and accompanying drawing, yet accompanying drawing only provide with reference to and the explanation use, the utility model is limited.
Description of drawings
Below in conjunction with accompanying drawing, by embodiment of the present utility model is described in detail, will make the technical solution of the utility model and other beneficial effect apparent.
In accompanying drawing,
Fig. 1 is the schematic perspective view of existing vehicle diagnosis interface;
Fig. 2 is the module diagram that the utility model is supported the small-sized code reading card of wide diagnosis function.
Embodiment
Technological means and the effect thereof taked for further setting forth the utility model are described in detail below in conjunction with preferred embodiment of the present utility model and accompanying drawing thereof.
See also Fig. 2, the utility model provides a kind of small-sized code reading card of supporting the wide diagnosis function, it comprises: MCU control module 2, the display module 6 that is electrically connected with MCU control module 2, the diagnose interface circuit module 8 that is electrically connected with MCU control module 2, the signalling channel commutation circuit module 9 that is electrically connected with diagnose interface circuit module 8, and with the joint module 7 of signalling channel commutation circuit module 9 electric connections, described signalling channel commutation circuit module 9 adopts JV700 chip 92, and described joint module 7 is used for being connected with the diagnose interface 12 of automobile 10.
The small-sized code reading card of described support wide diagnosis function also comprises the Keysheet module 4 that is electrically connected with MCU control module 2, is used for carrying out function selection and correlation parameter and sets.In this preferred embodiment, described Keysheet module 4 is electrically connected to MCU control module 2 by port expander 42.
Described display module 6 comprises a LCDs 62, and described display module 6 is used for showing diagnostic result and function menu option.In this preferred embodiment, described LCDs is the color LCD LCDs.
Described joint module 7 is used for being connected with the diagnose interface 12 of automobile 10, thereby obtains diagnostic data from automobile 10 electric-control system for OBDII diagnosis joint.In the present embodiment, described joint module 7 is OBDII16PIN diagnosis joint.
Adopt JV700 chip 92 in described signalling channel commutation circuit module 9, according to automobile 10 pins corresponding to vehicles requirement gating of diagnosis.Described MCU control module 2 control signal channel switching circuit modules 9 are according to the requirement of the electric-control system of institute's survey automobile 10 vehicles, to match on physical signalling pin corresponding to vehicle diagnosis interface 12 with the automobile 10 needed physical signallings of communication, data interaction between this small-sized code reading card and automobile 10 electric-control systems provides the most basic physical signalling passage.So just can realize the function that prior art needs a large amount of relays and discrete component to realize, thereby make this small-sized code reading card support automobile 10 all-electric control system functional diagnosis, not only reduce production costs, also greatly reduce the volume of code reading card.
Described diagnose interface circuit module 8 produces the signal of communication that the inner electric-control system of automobile 10 can be identified under the control of MCU control module 2, realize the data interaction with automobile 10.
The small-sized code reading card of described support wide diagnosis function also comprises a memory module 5 that is electrically connected with MCU control module 2.Described memory module 5 stores liquid crystal display driver, diagnostic routine, algorithm and diagnostic result, described MCU control module 2 is when processing the diagnostic data that gets from automobile 10, call relevant algorithm from memory module 5 and carry out computing, and diagnostic result is stored in memory module 5, conveniently check later historical diagnostic result.
Described MCU control module 2 is control centers of this code reading card, communicate by letter completing with automobile 10, when data analysis is processed, control display module 6 shows various functions and the diagnostic result information of native system, detect simultaneously the signal of touch control keyboard module 4 inputs, operate selection according to the user, complete corresponding diagnostic function.
The specific works principle is: described MCU control module 2 is according to the vehicle requirement of wish diagnosis automobile 10, to match on the corresponding physics signal pins of vehicle diagnosis interface 12 with the needed physical signalling of auto communication by signalling channel commutation circuit module 9, described MCU control module 2 calls from memory module 5 all electric-control systems that corresponding diagnostic routine removes to scan automobile 10, and establish a communications link with certain electric-control system, obtain diagnostic data, and process this diagnostic data and draw diagnostic result, at display module 6 these diagnostic results of output.In this process, the user can enable corresponding function by Keysheet module 4, checks the diagnostic result of each electric-control system.
in sum, the utility model provides a kind of small-sized code reading card of supporting the wide diagnosis function, signalling channel commutation circuit module by adopting the JV700 chip switches to each signal of automobile electric control system difference according to diagnostic system on the different pin of vehicle diagnosis interface, finally communicated by letter with dissimilar automobile electric control system by software control, obtain the parameter of every electric-control system of automobilism, realized the system-wide functional diagnosis of automobile, this small-sized code reading card low price, body weight is light, volume is little, being fit to individual car owner uses, and can realize automobile electric control system wide diagnosis function, the demand that is fit to market.
The above; for the person of ordinary skill of the art; can make other various corresponding changes and distortion according to the technical solution of the utility model and technical conceive, and all these changes and distortion all should belong to the protection domain of the utility model claim.
Claims (6)
1. small-sized code reading card of supporting the wide diagnosis function, it is characterized in that, comprise: MCU control module, the display module that is electrically connected with the MCU control module, the diagnose interface circuit module that is electrically connected with the MCU control module, the signalling channel commutation circuit module that is electrically connected with the diagnose interface circuit module, and with the joint module of signalling channel commutation circuit module electric connection, described signalling channel commutation circuit module adopts the JV700 chip, and described joint module is used for being connected with the diagnose interface of automobile.
2. the small-sized code reading card of support wide diagnosis function as claimed in claim 1, is characterized in that, also comprises the Keysheet module that is electrically connected with the MCU control module, is used for carrying out function selection and correlation parameter and sets.
3. the small-sized code reading card of support wide diagnosis function as claimed in claim 2, is characterized in that, described Keysheet module is electrically connected to the MCU control module by port expander.
4. the small-sized code reading card of support wide diagnosis function as claimed in claim 1, is characterized in that, described display module comprises a LCDs, and described display module is used for showing diagnostic result and function menu option.
5. the small-sized code reading card of support wide diagnosis function as claimed in claim 1, is characterized in that, described joint module is OBDII diagnosis joint.
6. the small-sized code reading card of support wide diagnosis function as claimed in claim 1, is characterized in that, also comprises a memory module that is electrically connected with the MCU control module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220473399 CN202975792U (en) | 2012-09-17 | 2012-09-17 | Miniature code reading card capable of supporting full-system diagnosis function |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220473399 CN202975792U (en) | 2012-09-17 | 2012-09-17 | Miniature code reading card capable of supporting full-system diagnosis function |
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| CN202975792U true CN202975792U (en) | 2013-06-05 |
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| CN 201220473399 Expired - Fee Related CN202975792U (en) | 2012-09-17 | 2012-09-17 | Miniature code reading card capable of supporting full-system diagnosis function |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103337846A (en) * | 2013-06-19 | 2013-10-02 | 深圳市元征科技股份有限公司 | Peripheral application circuit |
| CN103389729A (en) * | 2013-08-06 | 2013-11-13 | 深圳市元征科技股份有限公司 | Vehicle simulation test jig |
| CN103914060A (en) * | 2014-03-17 | 2014-07-09 | 深圳市元征科技股份有限公司 | OBDII code reading card device |
| US20160057635A1 (en) * | 2014-08-12 | 2016-02-25 | Launch Tech Co., Ltd. | Vehicular wireless local area network device |
| CN109358610A (en) * | 2018-12-10 | 2019-02-19 | 上海星融汽车科技有限公司 | The detection method of vehicle diagnostic equipment |
-
2012
- 2012-09-17 CN CN 201220473399 patent/CN202975792U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103337846A (en) * | 2013-06-19 | 2013-10-02 | 深圳市元征科技股份有限公司 | Peripheral application circuit |
| CN103389729A (en) * | 2013-08-06 | 2013-11-13 | 深圳市元征科技股份有限公司 | Vehicle simulation test jig |
| CN103389729B (en) * | 2013-08-06 | 2015-11-25 | 深圳市元征科技股份有限公司 | A kind of vehicle simulation test jig |
| CN103914060A (en) * | 2014-03-17 | 2014-07-09 | 深圳市元征科技股份有限公司 | OBDII code reading card device |
| US20160057635A1 (en) * | 2014-08-12 | 2016-02-25 | Launch Tech Co., Ltd. | Vehicular wireless local area network device |
| EP3148287A4 (en) * | 2014-08-12 | 2018-01-31 | Launch Tech Company Limited | On-board wireless local area network device |
| CN109358610A (en) * | 2018-12-10 | 2019-02-19 | 上海星融汽车科技有限公司 | The detection method of vehicle diagnostic equipment |
| CN109358610B (en) * | 2018-12-10 | 2021-02-05 | 上海星融汽车科技有限公司 | Detection method of vehicle diagnostic equipment |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130605 Termination date: 20210917 |
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| CF01 | Termination of patent right due to non-payment of annual fee |