CN201757857U - Can bus communication monitoring analyzer - Google Patents
Can bus communication monitoring analyzer Download PDFInfo
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- CN201757857U CN201757857U CN2010202391651U CN201020239165U CN201757857U CN 201757857 U CN201757857 U CN 201757857U CN 2010202391651 U CN2010202391651 U CN 2010202391651U CN 201020239165 U CN201020239165 U CN 201020239165U CN 201757857 U CN201757857 U CN 201757857U
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Abstract
The utility model relates to a CAN bus communication monitoring analyzer, which comprises a power module, a single chip microcomputer, a small keyboard, an LCD display, a CAN bus interface, a PS/2 interface and a RS232 interface. The monitoring analyzer is connected with a monitored CAN network through the CAN bus interface to analyze problems of the CAN network in communication process, the monitoring analyzer can be matched with different CAN networks by setting working parameters of the monitoring analyzer through the small keyboard, the LCD display screen can display mutually transmitted information among different nodes in the networks in real time, and various instructions or data can be conveniently edited through an external universal computer keyboard connected to the PS/2 interface and then transmitted to the networks, thereby achieving the purpose of leading the monitoring analyzer to simulate certain nodes to transmit data to the CAN networks.
Description
Technical field
The utility model relates to a kind of CAN bus communication monitoring analyzer, and especially a kind of PS/2 interface that has can be realized the CAN bus communication monitoring analyzer of communication " listening ", " saying " function.
Background technology
CAN (controller area network network) bus be German BOSCH company from the beginning of the eighties for solving a kind of serial data communication agreement that control numerous the Hyundai Motor and the exchanges data between the testing tool are developed, it is a kind of multi-master bus, and communication media can be twisted-pair feeder, concentric cable or light transmitting fiber.Traffic rate can reach 1MBPS.Because advantages such as its high-performance, high reliability, real-time now have been widely used in various fields such as industrial automation, the vehicles, Medical Instruments and building, environment control.The controller area network network has also obtained using widely in China in recent years, but relative exploitation commissioning device lacks relatively or can not satisfy the demand well.
The research staff helps analyze the problem that exists in the CAN network by emulator or specific purpose tool usually at present.
Emulator debug method: the program of when a certain node goes wrong, moving this node by emulator, and by breakpoint being set, observing method such as correlated variables and pinpoint the problems, the shortcoming of the method is: need the operation of shut down procedure when all characteristics that emulator to a great extent can't the real simulation single-chip microcomputer, observation variable and make that the whole service process is discontinuous, emulator uses inconvenient in industry spot.
Specific purpose tool debugging method: use existing special-purpose CAN bus communication analyser also can help commissioning staff's problem analysis effectively.At present analyser on the market mainly contains two types, and 1, special-purpose CAN communication network analysis instrument, must link to each other with PC during this type of analyser work, depend on host computer procedure and the memory function moved on the PC and just can carry out operate as normal; 2, simple and easy CAN communication network analysis instrument, this type of analyser lay particular emphasis on the recording and tracking of realizing network communication data on function, lack the specific node of simulation initiatively sends function from information to network.It can get off the data message on the network for ex-post analysis or by the real-time display message of LCD display by memory stores.
The utility model content
The technical problems to be solved in the utility model is: exploitation, debugging acid that a kind of CAN bus system is provided, monitoring analyzer has realized that communication " is listened ", the function of " saying ", can help the problem that exists in user's express-analysis, the monitored CAN network in location.
The technical scheme that its technical matters that solves the utility model adopts is: a kind of CAN bus communication monitoring analyzer, LCD display, CAN bus interface, keypad, PS/2 interface and the RS232 interface of the various data that transmit mutually in the real-time display network communication process that has single-chip microcomputer and be connected with single-chip microcomputer respectively, described CAN bus communication monitoring analyzer is connected with monitored network by the CAN bus interface.
Further, for realization data that can be convenient, the editing of order, PS/2 interface described in the utility model extends out the connection general computer keyboard.
Further specifically, single-chip microcomputer described in the utility model is P89V51RB2FX, and the CAN Bus Interface Chip is SJA1000 and PCA82C250, and LCD display is TG12864B, and the RS232 interface chip is MAX232.
Total system described in the utility model is simple, practical, be easy to carry.CAN bus monitoring analyser can be connected to monitored network by the CAN bus interface, can set relevant running parameter by the keypad that monitoring analyzer carries, monitoring analyzer and monitored network are complementary, are applicable to various industry spot better; LCD display is various data, the command information in the display network in real time, makes things convenient for usertracking, analysis.
The beneficial effects of the utility model are, solved the defective that exists in the background technology, can be as required specific node or all nodes send on the display network in real time data, order, also data, the order by editor can be sent to network, realized receiving the function that monitors and simulate transmission, this function makes to have problems in analysis, the fixer network and becomes more quick; Monitoring analyzer has the PS/2 interface, can import easily, edit various command and data message by the universal computer keyboard that the PS/2 interface is external, solve keypad that monitoring analyzer carries because of the limited problem that can't satisfy some complicated occasion of number of keys.
Description of drawings
Below in conjunction with drawings and Examples the utility model is further specified.
Fig. 1 is a block diagram of the present utility model.
Embodiment
With preferred embodiment the utility model is described in further detail in conjunction with the accompanying drawings now.These accompanying drawings are the synoptic diagram of simplification, basic structure of the present utility model only is described in a schematic way, so it only show the formation relevant with the utility model.
As shown in Figure 1, the utility model is that a kind of CAN bus communication monitoring analyzer is made up of single-chip microcomputer, LCD display, CAN bus interface, keypad, PS/2 interface and RS232 interface, its core is a single-chip microcomputer that model is P89V51RB2X, the RAM of embedded 1024 bytes of single-chip microcomputer can be used for the temporary information that receives; LCD display is dot matrix type LCD, in real time the data stream on the monitoring network; The chip that the CAN bus interface is used is SJA1000 and PCA82C250, and the CAN_H by CAN bus driver chip 82C250 can link to each other with monitored CAN network with CAN_L; The PS/2 interface allows the external general computer keyboard of user conveniently to carry out text editing; When needing, the RS232 interface can be used for being connected with PC, and networking back monitoring analyzer can be given the various data on the network in the PC with for further analysis by the RS232 interface.
Can conveniently set running parameter by the keypad that monitoring analyzer carries, monitoring analyzer is mated with different monitored network.The running parameter that can set has: CAN type of message (11 bit flags symbol pattern or 29 bit flags symbol pattern), the traffic rate of CAN network, the data layout (sexadecimal, ASCII, start-stop sign and check code) of communication protocol, the id number of equipment.Can be used as a node and be connected to monitored network at the parameter setting back monitoring analyzer that finishes, be used for the data stream of all or special characteristic on the bus is monitored in real time, realized the function that communication " is listened ".Need to prove: the P89V51RB2X single-chip microcomputer has programing function in application, and the user can deposit the bus data of various setup parameters or storage in and realize power-down protection among the FLASH, and information loses after avoiding shutting down.
Because system carries the keypad keys limited amount, be difficult to realize the input of various numerals, letter with it, and solved this problem by the external universal computer keyboard of PS/2 interface, can edit and be sent to network to various data, order easily by it, realize the function of communication " saying ".
What describe in the above instructions is embodiment of the present utility model, various not illustrating is construed as limiting flesh and blood of the present utility model, the person of an ordinary skill in the technical field after having read instructions can to before described embodiment make an amendment or be out of shape, and do not deviate from the essence and the scope of utility model.
Claims (3)
1. CAN bus communication monitoring analyzer, it is characterized in that: have single-chip microcomputer and the real-time display network communication process that is connected with single-chip microcomputer respectively in LCD display, CAN bus interface, keypad, PS/2 interface and the RS232 interface of the various data that transmit mutually, described CAN bus communication monitoring analyzer is connected with monitored network by the CAN bus interface.
2. CAN bus communication monitoring analyzer as claimed in claim 1 is characterized in that: described PS/2 interface extends out the connection general computer keyboard.
3. CAN bus communication monitoring analyzer as claimed in claim 1 is characterized in that: described single-chip microcomputer is P89V51RB2FX, and the CAN Bus Interface Chip is SJA1000 and PCA82C250, and LCD display is TG12864B, and the RS232 interface chip is MAX232.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202391651U CN201757857U (en) | 2010-06-25 | 2010-06-25 | Can bus communication monitoring analyzer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202391651U CN201757857U (en) | 2010-06-25 | 2010-06-25 | Can bus communication monitoring analyzer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201757857U true CN201757857U (en) | 2011-03-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202391651U Expired - Fee Related CN201757857U (en) | 2010-06-25 | 2010-06-25 | Can bus communication monitoring analyzer |
Country Status (1)
| Country | Link |
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| CN (1) | CN201757857U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108415408A (en) * | 2018-03-16 | 2018-08-17 | 宁波杉杉汽车有限公司 | Automobile packet parsing based on CAN communication and method for diagnosing faults |
| CN109799737A (en) * | 2017-11-16 | 2019-05-24 | 长沙闽壹湖电子科技有限责任公司 | A kind of CAN bus based slave Communication System Design |
| CN113093710A (en) * | 2021-04-09 | 2021-07-09 | 深圳市道通科技股份有限公司 | Bus data analysis method, device and equipment and automobile diagnosis system |
-
2010
- 2010-06-25 CN CN2010202391651U patent/CN201757857U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109799737A (en) * | 2017-11-16 | 2019-05-24 | 长沙闽壹湖电子科技有限责任公司 | A kind of CAN bus based slave Communication System Design |
| CN108415408A (en) * | 2018-03-16 | 2018-08-17 | 宁波杉杉汽车有限公司 | Automobile packet parsing based on CAN communication and method for diagnosing faults |
| CN113093710A (en) * | 2021-04-09 | 2021-07-09 | 深圳市道通科技股份有限公司 | Bus data analysis method, device and equipment and automobile diagnosis system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110309 Termination date: 20110625 |