CN207321268U - A kind of multichannel auto communication interface - Google Patents
A kind of multichannel auto communication interface Download PDFInfo
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- CN207321268U CN207321268U CN201720557615.3U CN201720557615U CN207321268U CN 207321268 U CN207321268 U CN 207321268U CN 201720557615 U CN201720557615 U CN 201720557615U CN 207321268 U CN207321268 U CN 207321268U
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Abstract
The utility model discloses a kind of multichannel auto communication interface, belongs to Automobile Failure Diagnosis Technology field.Including：Microcontroller, CAN communication module, K communication modules, communication module, DB15 interfaces；The communication module is connected with the microcontroller, is communicated to connect for being established with automobile computer；The CAN communication module is connected with the microprocessor respectively with one end of K communication modules, and the other end is connected with the DB15 interfaces respectively；The CAN communication module includes CAN controller and CAN transceiver, and the CAN transceiver is connected by the CAN controller with the microprocessor.Compared with prior art, its advantage is that CAN bus and K ray modes can be achieved to communicate with automobile computer to the utility model, increase multichannel compatibility, while simple in structure, and communication is reliable and stable.
Description
Technical field
Automobile Failure Diagnosis Technology field is the utility model is related to, is specifically a kind of multichannel auto communication interface.
Background technology
With the fast development of modern automobile industry technology and electronic technology, vehicle mounted guidance, mobile communication, Intelligent office,
The service that security protection and fault diagnosis etc. have intelligentize and informatization is constantly loaded on automobile, and automobile just becomes
It is more and more information-based and intelligent.Automobile fault diagnostic apparatus passes through the technologies pair such as mechanics of communication, electronic technology and embedded system
Automobile carries out fault diagnosis and maintenance.Auto communication interface（VCI）As automobile fault diagnostic apparatus important component, pass through vapour
Car communication interface can be communicated with automobile computer, the information such as read failure code, data flow.According to automobile failure diagnosis agreement
Laminarity, auto communication interface just plays the role of physical layer and data link layer in communications protocol layers, i.e., it is vapour
Car computer and automobile electric control system（ECU）Data interaction bridge.Auto communication interface and automobile computer on the market at present
Between communication protocol it is single, the scope of application is small.
Utility model content
The utility model in order to overcome the deficiencies of the prior art and provide it is a kind of it is simple in structure, can be between automobile computer
Realize the multichannel auto communication interface of CAN bus and the connection of K lines.
In order to solve above-mentioned technical problem, the utility model proposes basic technical scheme be：
A kind of multichannel auto communication interface, including：Microcontroller, CAN communication module, K communication modules, communication module,
DB15 interfaces；
The communication module is connected with the microcontroller, is communicated to connect for being established with automobile computer；The CAN communication
Module is connected with the microprocessor respectively with one end of K communication modules, and the other end is connected with the DB15 interfaces respectively；
The CAN communication module includes CAN controller and CAN transceiver, and the CAN transceiver is controlled by the CAN
Device is connected with the microprocessor.
Further, the CAN communication module further includes the high-speed light being connected between CAN controller and CAN transceiver
Coupling, for establishing Phototube Coupling between the CAN controller and CAN transceiver.
Further, the multichannel auto communication interface further includes LIN communication modules, and the one of the LIN communication modules
End is connected with the microprocessor, and the other end is connected with the DB15 interfaces.
Further, the microcontroller is the LPC1768 of Cortex-M3 kernels.
Further, the multichannel auto communication interface further includes power module, and it is described that the power module, which is used for,
Microcontroller is powered.
Further, the model MCP2515 of the CAN controller.
Further, the multichannel auto communication interface further includes OBD interfaces, and the OBD interfaces connect with the DB15
Mouth connection.
The beneficial effects of the utility model are：The utility model includes CAN communication module and K communication modules, it can be achieved that CAN
Bus and K ray modes communicate with automobile computer, increase multichannel compatibility, while simple in structure, are readily produced.
Brief description of the drawings
Fig. 1 is a kind of structure diagram for multichannel auto communication interface that the utility model embodiment provides.
Embodiment
Below with reference to drawings and examples the utility model is described further, but this reality should not be limited with this
With new protection domain.
As shown in Figure 1, a kind of multichannel auto communication interface of the utility model, including：Microcontroller 1, CAN communication mould
Block 2, K communication modules 3, communication module 5, DB15 interfaces 6；
The communication module 5 and the microcontroller 1 connect, and are communicated to connect for being established with automobile computer；The CAN leads to
One end of letter module 2 and K communication modules 3 is connected with the microprocessor 1 respectively, and the other end connects with the DB15 interfaces 6 respectively
Connect；
The CAN communication module 2 includes CAN controller 201 and CAN transceiver 202, and the CAN transceiver 202 passes through institute
State CAN controller 201 and the microprocessor 1 connects.
For CAN communication module 2, data are sent to DB15 interfaces 6 by CAN controller 201 and CAN transceiver 202 and are obtained
Request message is taken, and receives order and the data of return, is controlled by microcontroller 1 and automobile electricity is passed to by the communication module 5
In brain.
For K communication modules 3, data acquisition request message is sent to DB15 interfaces 6, and receive order and the number of return
According to being controlled by microcontroller 1 and passed to by the communication module 5 in automobile computer.Specifically in the present embodiment, the K communications
Module 3 is MC33290, and automobile K lines turn Transistor-Transistor Logic level with RS232 by 3 level conversion of K communication modules and communicate, and realize automobile
K lines communicate.
Further, the CAN communication module 2, which further includes, is connected between CAN controller 201 and CAN transceiver 202
High speed photo coupling 203, for establishing Phototube Coupling between the CAN controller 201 and CAN transceiver 202.
In practical applications, CAN bus is mainly used in automotive environment, and influence of the environment to circuit is very big, so being
These interference are reduced, when designing the node of CAN bus, in circuit using such as 6N137 of high speed photo coupling 203, make CAN controls
The TX0 and RX0 of device 201 be not direct to be connected with the TXD and RXD of CAN transceiver 202, but is received by high speed photo coupling 203 and CAN
Send out device 202 to be connected, the electrical isolation in CAN bus between each CAN nodes can be thus realized well, so as to improve CAN bus
The anti-interference and reliability of data communication.
Further, the multichannel auto communication interface further includes LIN communication modules 4, the LIN communication modules 4
One end and the microprocessor 1 connect, and the other end and the DB15 interfaces 6 connect.For LIN communication modules 4, to DB15 interfaces
6 send data acquisition request message, and receive order and the data of return, are controlled by microcontroller 1 by the communication module 5
Pass in automobile computer, realize that automobile LIN line communicates, strengthen the multichannel communication interface compatibility.
Further, the microcontroller 1 is the LPC1768 of Cortex-M3 kernels, it has 3 level production lines and Harvard
Structure, with independent local instruction and data bus；The general DMA controllers of 8 passages, 4 UART, 2 CAN passages, 2
A SSP controllers can support the block of higher level to extend and integrate；Support SAE J1708, SAE J1587, SAE J1850,
SAE J2190, SAE 1979, SAE J1939, ISO 11898, ISO 9141, ISO 14230, ISO 15765, ISO
14229 grade car diagnosis communication agreements.
Further, the multichannel auto communication interface further includes power module 8, and the power module 8 is used for for institute
Microcontroller 1 is stated to power.
Further, the model MCP2515 of the CAN controller, it is serial with the general SPI for meeting industrial standard
Interface, meets CAN2.0 technical specifications, have it is small, cost is low, it is easy to use the characteristics of.It is and general on the market
SJA1000 also has reliability height, and cost is low, supports telecommunication feature, but such as sent out there is also some defects in application
Sending buffer and reception buffer number are few so that data throughput is relatively low, and the setting to filter and shielding device is not square
Just, because of its limited amount, it is impossible to while meet multiple packet filterings and function of shielding.MCP2515 can receive and dispatch normal data frame, expand
Data frame and remote frame are opened up, there are 6 acceptance filtenng registers, 2 examination mask registers, resource is sufficient, easy to control, subtracts
The burden of slight controller.
Further, the multichannel auto communication interface further includes OBD interfaces 7, the OBD interfaces 7 and the DB15
Interface 6 connects.It is switchable into OBD interfaces 7 by DB15 interfaces 6, it is possible to achieve with a variety of automobile electric control systems（ECU）Interface is mutual
Connection, possesses stronger autgmentability.
In specific implementation process, the microcontroller 1 can be by one or more application application-specific integrated circuit（ASIC）、
Digital signal processor（DSP）, digital signal processing appts（DSPD）, programmable logic device（PLD）, field-programmable gate array
Row（FPGA）, controller, microcontroller or other electronic components realize.
According to the disclosure and teachings of the above specification, the utility model those skilled in the art can also be to above-mentioned reality
Apply mode make a change and modification.Therefore, the utility model is not limited to embodiment disclosed and described above, right
Some modifications and changes of the utility model should also be as falling into the scope of the claims of the utility model.In addition, to the greatest extent
Some specific terms have been used in pipe this specification, but these terms are merely for convenience of description, not to the utility model
Form any restrictions.
Claims (7)
- A kind of 1. multichannel auto communication interface, it is characterised in that including：Microcontroller, CAN communication module, K communication modules, Communication module, DB15 interfaces；The communication module is connected with the microcontroller, is communicated to connect for being established with automobile computer；The CAN communication module Connected respectively with the microcontroller with one end of K communication modules, the other end is connected with the DB15 interfaces respectively；The CAN communication module includes CAN controller and CAN transceiver, the CAN transceiver by the CAN controller and The microcontroller connection.
- 2. a kind of multichannel auto communication interface according to claim 1, it is characterised in that the CAN communication module is also Including the high speed photo coupling being connected between CAN controller and CAN transceiver, for the CAN controller and CAN transceiver it Between establish Phototube Coupling.
- A kind of 3. multichannel auto communication interface according to claim 1, it is characterised in that the multichannel auto communication Interface further includes LIN communication modules, and one end of the LIN communication modules is connected with the microcontroller, the other end and described DB15 interfaces connect.
- 4. a kind of multichannel auto communication interface according to claim 1, it is characterised in that the microcontroller is The LPC1768 of Cortex-M3 kernels.
- A kind of 5. multichannel auto communication interface according to claim 1, it is characterised in that the multichannel auto communication Interface further includes power module, and the power module is used to power for the microcontroller.
- A kind of 6. multichannel auto communication interface according to claim 1, it is characterised in that the type of the CAN controller Number it is MCP2515.
- A kind of 7. multichannel auto communication interface according to claim 1, it is characterised in that the multichannel auto communication Interface further includes OBD interfaces, and the OBD interfaces are connected with the DB15 interfaces.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720557615.3U CN207321268U (en) | 2017-05-17 | 2017-05-17 | A kind of multichannel auto communication interface |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720557615.3U CN207321268U (en) | 2017-05-17 | 2017-05-17 | A kind of multichannel auto communication interface |
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| CN207321268U true CN207321268U (en) | 2018-05-04 |
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| CN201720557615.3U Expired - Fee Related CN207321268U (en) | 2017-05-17 | 2017-05-17 | A kind of multichannel auto communication interface |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112964478A (en) * | 2021-02-05 | 2021-06-15 | 深圳市超越科技开发有限公司 | Automobile diagnosis equipment for automobile users |
-
2017
- 2017-05-17 CN CN201720557615.3U patent/CN207321268U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112964478A (en) * | 2021-02-05 | 2021-06-15 | 深圳市超越科技开发有限公司 | Automobile diagnosis equipment for automobile users |
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