CN202759130U - Connecting line for vehicle OBD diagnostic interface - Google Patents
Connecting line for vehicle OBD diagnostic interface Download PDFInfo
- Publication number
- CN202759130U CN202759130U CN201220441626.2U CN201220441626U CN202759130U CN 202759130 U CN202759130 U CN 202759130U CN 201220441626 U CN201220441626 U CN 201220441626U CN 202759130 U CN202759130 U CN 202759130U
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- obd
- connecting line
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Abstract
The utility model relates to a connecting line for vehicle OBD diagnostic interfaces. The connecting line comprises an OBD diagnostic plug at one end, a detection instrument connector at the other end, and a medium data line used for connecting the OBD diagnostic plug and the detection instrument connector. The detection instrument connector is simultaneously provided with a CAN_0 interface for communication and a CAN_1 interface used for diagnostic flash writing and K-line-based K-line interfaces, wherein the CAN_0 interface and the CAN_1 interface are based on CAN-lines; the K-line interfaces comprises a K-line data interface, a K-line power positive interface and a K-line power negative interface. The detection instrument connector is further provided with a power supply indicating lamp for the OBD diagnostic interfaces. An outer layer of the medium data line is wrapped with an insulation shielding layer. The connecting line integrates the K-line connectors and the CAN-line connectors together, and thus has relatively strong universality, enables diagnosis of a vehicle to be more rapid and convenient; and furthermore, the connecting line simple in structure on the whole, and is stable and reliable in data transmission.
Description
Technical field
The utility model relates to the vehicle detection field, specifically a kind of vehicle OBD diagnose interface connecting line.
Background technology
The OBD system is Full Featured control and the diagnostic system that each automobile factory must be equipped with at vehicle.These diagnostic systems can be warned driving when vehicle breaks down, and can be via variety of way read failure code, to accelerate maintenance time when maintenance.The OBD system comprises following functions: 1) alarming device is arranged, thereby be convenient to reminding driver, carry out maintenance and the maintenance of off gas control system; 2) function by OBD diagnose interface monitoring sensor and actuator; 3) diagnostic trouble code of Application standard, available general detecting instrument reads.Wherein, detecting instrument is connected on the OBD diagnose interface by connecting line, can read failure code in the ECU by the OBD diagnose interface, so that on-call maintenance and monitor the emission level of automobile.
Present OBD system uses the CAN communications protocol mostly, the CAN communications protocol is because its nondestructive network arbitration mechanism, higher communication speed and the communication modes of flexibility and reliability, extensively favored in the In-vehicle networking field, increasing automaker is applied to automobile control, diagnosis and communication to the CAN bus.Simultaneously, the OBD system of some old money vehicle is also using the KWP2000 communications protocol, and KWP2000 is based on the diagnosing protocol of K line, uses the communication of K line, needs the K line to trigger, and wakes ECU up, then enters system.
Vehicle OBD diagnose interface connecting line is as the connecting line that connects between car load ECU and the detecting instrument, and the one end is the OBD diagnostic plug, and the other end is the detecting instrument joint, and the centre is data bus connection.Wherein, the OBD diagnostic plug is used for being plugged on car load OBD diagnose interface, and the detecting instrument joint is used for connecting detecting instrument.Mostly the detecting instrument joint of existing OBD diagnose interface connecting line is to adopt 9 hole CAN joints based on the CAN line, utilizes this CAN joint to connect common detecting instrument, such as ETAS590, ETAS581 etc.
In sum, the shortcoming of existing vehicle OBD diagnose interface connecting line is: 1) the detecting instrument joint, needs redesign or changes connecting line adopting the vehicle of other communication protocols only for a kind of communication protocol design, reduced the efficient of vehicle diagnostics, the connecting line versatility is not strong; 2) can only realize communication and demarcation between detecting instrument and the Engine ECU, range of application is narrower; 3) if the CAN_0 of complete system plant, CAN_1 or car load OBD diagnostic plug power supply wrong, the testing staff can't know, and can cause existing equipment normally to use.
The utility model content
The technical problems to be solved in the utility model provides a kind of vehicle OBD diagnose interface connecting line, this connecting line combines K wire terminal and CAN wire terminal, and versatility is stronger, so that vehicle diagnostics is more convenient faster, and whole connecting wire structure is simple, and transfer of data is reliable and stable.
For solving the problems of the technologies described above, vehicle OBD diagnose interface connecting line of the present utility model comprise an end OBD diagnostic plug, the other end the detecting instrument joint and be used for connecting the two intermediate data line, its design feature is to be provided with simultaneously CAN_1 interface that the CAN_0 interface used based on the communication of CAN line and diagnosis write with a brush dipped in Chinese ink usefulness on the described detecting instrument joint and based on the K line interface of K line.
Described K line interface comprises K line data-interface, the positive interface of K line power supply and K line power-interface.
Also be provided with OBD diagnose interface power supply indicator on the described detecting instrument joint.
The skin of described intermediate data line is enclosed with insulation screen.
The beneficial effects of the utility model are: K wire terminal and CAN wire terminal are incorporated on the joint, and the user can select different diagnosis communication interfaces according to the difference of car load communications protocol, has increased the versatility of connecting line, has improved the efficient of vehicle diagnostics; For the CAN line interface, use different CAN communications protocol according to the car load network system, the user can choice for use CAN_0 interface or CAN_1 interface, can prevent again simultaneously the people be misconnection cause can't communication or write with a brush dipped in Chinese ink problem; OBD diagnose interface power supply indicator is set, and the user can detect easily and intuitively car load OBD diagnose interface and whether be in power supply state; Intermediate data line outer wrapping insulation screen has strengthened the interference free performance of transfer of data, has guaranteed the transmitting of data.The utility model combines K wire terminal and CAN wire terminal, and versatility is stronger, so that vehicle diagnostics is more convenient faster, and whole connecting wire structure is simple, and transfer of data is reliable and stable.
Description of drawings
Below in conjunction with the drawings and specific embodiments the utility model is described in further detail:
Fig. 1 is structural representation of the present utility model;
Fig. 2 be among Fig. 1 along A to schematic diagram;
Fig. 3 be among Fig. 1 along B to schematic diagram.
Embodiment
With reference to accompanying drawing, a kind of execution mode of vehicle OBD diagnose interface connecting line of the present utility model is the detecting instrument joint 2 of the OBD diagnostic plug 1 that comprises an end, the other end and is used for connecting the two intermediate data line 12.Wherein, be provided with simultaneously CAN_1 interface 4 that the CAN_0 interface 3 used based on the communication of CAN line and diagnosis write with a brush dipped in Chinese ink usefulness and based on the K line interface 5 of K line on the detecting instrument joint 2.K line interface 5 comprises K line data-interface 51, the positive interface 52 of K line power supply and K line power-interface 53.K wire terminal and CAN wire terminal are incorporated on the joint, and the user can select different diagnosis communication interfaces according to the difference of car load communications protocol.Use K line interface 5 for the vehicle that uses the KWP2000 communications protocol.Use the CAN interface for the vehicle that uses the CAN communications protocol, designed two CAN communication interfaces: CAN_0 interface 3 and CAN_1 interface 4.CAN_0 interface 3 is applied to adopt the car load network system of J1939 agreement communication, can only carry out read operation to the ECU data, can not write with a brush dipped in Chinese ink.CAN_1 interface 4 is applied to adopt the car load network system of CCP agreement communication, can read and write with a brush dipped in Chinese ink operation to the ECU data.CAN_0 interface 3 is used for communication, and CAN_1 interface 4 is used for diagnosis to be write with a brush dipped in Chinese ink, and two interfaces all adopt 7 stitch.
With reference to Fig. 2, also be provided with OBD diagnose interface power supply indicator 6 on the detecting instrument joint 2.The purpose that OBD diagnose interface power supply indicator 6 is set is in order to make the testing staff find out intuitively whether the OBD diagnose interface is in power supply state.
The utility model is take the OBD diagnose interface of 16Pin as example, as shown in Figure 3, is 16 holes corresponding to the OBD diagnostic plug 1 of OBD diagnose interface.Describe for convenient, each hole of OBD diagnostic plug 1 is called OBD-1 to OBD-16 successively.Wherein, OBD-1 and OBD-9 are used for diagnosis and write with a brush dipped in Chinese ink the CAN line, connect CAN_1 interface 4; OBD-14 and OBD-6 are used for communication CAN line, connect CAN_0 interface 3; OBD-7 is used for the K line, and it connects K line data-interface 51; OBD-16 is battery positive voltage, connects the positive interface 52 of K line power supply; OBD-4 is the direct bonding of vehicle body, and it connects K line power-interface 53.For OBD diagnose interface power supply indicator 6, it is connected between OBD-16 and the OBD-4.If the wiring of car load OBD diagnose interface is normal, power supply indicator is bright, otherwise does not work, and judges with this whether car load OBD diagnose interface is in the normal power supply state.
With reference to Fig. 1, in order to increase interference free performance and the data transmission stability of OBD diagnose interface connecting line of the present utility model, the skin of intermediate data line 12 is enclosed with insulation screen 120.Wherein, more preferred, but the equal wrap insulate screen of the every data lines in the intermediate data line 12.
In sum, the utility model is not limited to above-mentioned embodiment.Those skilled in the art under the prerequisite that does not break away from spirit and scope of the present utility model, can do some changes and modification.Protection range of the present utility model should be as the criterion with claim of the present utility model.
Claims (4)
1. vehicle OBD diagnose interface connecting line, comprise an end OBD diagnostic plug (1), the other end detecting instrument joint (2) and be used for connecting the two intermediate data line (12), it is characterized in that being provided with simultaneously on the described detecting instrument joint (2) the CAN_0 interface (3) of using based on the communication of CAN line and diagnose the CAN_1 interface (4) of writing with a brush dipped in Chinese ink usefulness and based on the K line interface (5) of K line.
2. vehicle OBD diagnose interface connecting line as claimed in claim 1 is characterized in that described K line interface (5) comprises K line data-interface (51), the positive interface of K line power supply (52) and K line power-interface (53).
3. vehicle OBD diagnose interface connecting line as claimed in claim 1 or 2 is characterized in that also being provided with on the described detecting instrument joint (2) OBD diagnose interface power supply indicator (6).
4. vehicle OBD diagnose interface connecting line as claimed in claim 1 or 2 is characterized in that the skin of described intermediate data line (12) is enclosed with insulation screen (120).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220441626.2U CN202759130U (en) | 2012-09-03 | 2012-09-03 | Connecting line for vehicle OBD diagnostic interface |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220441626.2U CN202759130U (en) | 2012-09-03 | 2012-09-03 | Connecting line for vehicle OBD diagnostic interface |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202759130U true CN202759130U (en) | 2013-02-27 |
Family
ID=47738293
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201220441626.2U Expired - Lifetime CN202759130U (en) | 2012-09-03 | 2012-09-03 | Connecting line for vehicle OBD diagnostic interface |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202759130U (en) |
-
2012
- 2012-09-03 CN CN201220441626.2U patent/CN202759130U/en not_active Expired - Lifetime
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130227 |