CN201994958U - Intelligent communication node between CAN (controller area network) bus and Ethernet - Google Patents
Intelligent communication node between CAN (controller area network) bus and Ethernet Download PDFInfo
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- CN201994958U CN201994958U CN2011201401769U CN201120140176U CN201994958U CN 201994958 U CN201994958 U CN 201994958U CN 2011201401769 U CN2011201401769 U CN 2011201401769U CN 201120140176 U CN201120140176 U CN 201120140176U CN 201994958 U CN201994958 U CN 201994958U
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- communication node
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Abstract
The utility model relates to an intelligent communication node between a CAN (controller area network) bus and an Ethernet, which solves the problem that a dedicated communication node for connecting the CAN bus with the Ethernet lacks. The intelligent communication node between the CAN bus and the Ethernet comprises a CAN interface circuit, a singlechip and an Ethernet interface circuit, wherein a data switching end of the CAN interface circuit is connected to one data switching end of the singlechip, the data switching end of the Ethernet interface circuit is connected to the other data switching end of the singlechip, one control output end of the singlechip is connected to a control input end of the CAN interface circuit, and the other control output end of the singlechip is connected to the control input end of the Ethernet interface circuit for the communication between the CAN bus and the Ethernet.
Description
Technical field
The utility model relates to communication node between CAN bus and Ethernet.
Background technology
Because down-hole mine watch-dog connects by the CAN bus, adopt ethernet communication on the ground, conventional CAN interface circuit is made up of CAN controllers, CAN transceiver, electrical isolation circuit and power isolation circuit usually, and the CAN interface circuit of this mode exists circuit more complicated, bigger than normal, the more high shortcoming of cost of volume; And Mine Monitoring and Control System need with ground ethernet communication, lack the special-purpose communication node that connects CAN bus and Ethernet respectively at present.
The utility model content
The purpose of this utility model is the problem that lacks the special-purpose communication node that connects CAN bus and Ethernet respectively at present in order to solve, and intelligence communication node between a kind of CAN bus and Ethernet is provided.
Intelligence communication node between CAN bus and Ethernet, it comprises CAN interface circuit, single-chip microcomputer and ethernet interface circuit, the exchanges data end of CAN interface circuit is connected a data exchange end of single-chip microcomputer, the exchanges data end of ethernet interface circuit is connected another exchanges data end of single-chip microcomputer, a control output end of single-chip microcomputer is connected the control input end of CAN interface circuit, and another control output end of single-chip microcomputer is connected the control input end of ethernet interface circuit.
The utility model has successfully solved the communication problem of CAN bus and Ethernet.
Description of drawings
Fig. 1 is a structural representation of the present utility model, and Fig. 2 is a CAN interface circuit structural representation of the present utility model.
Embodiment
Embodiment one: present embodiment is described in conjunction with Fig. 1, present embodiment comprises CAN interface circuit 1, single-chip microcomputer 2 and ethernet interface circuit 3, the exchanges data end of CAN interface circuit 1 is connected a data exchange end of single-chip microcomputer 2, the exchanges data end of ethernet interface circuit 3 is connected another exchanges data end of single-chip microcomputer 2, a control output end of single-chip microcomputer 2 is connected the control input end of CAN interface circuit 1, and another control output end of single-chip microcomputer 2 is connected the control input end of ethernet interface circuit 3.
CAN interface circuit 1 is connected on the CAN bus, ethernet interface circuit 3 is connected on the Ethernet, intelligent communication node is made up of a CAN interface circuit 1, an ethernet interface circuit 3 and a single-chip microcomputer 2, single-chip microcomputer 2 uses 80C51, CAN interface circuit 1 employing P87C591 makes controller, CTM1050T makes transceiver, and ethernet interface circuit 3 adopts the 8X196 of Intel.
Embodiment two: present embodiment is described in conjunction with Fig. 2, the CAN interface circuit 1 of present embodiment comprises interface control unit 4, transmission circuit 5 and power supply 6, the control output end of interface control unit 4 is connected the control input end of transmission circuit 5, a data exchange end of interface control unit 4 is connected the exchanges data end of transmission circuit 5, another exchanges data end of interface control unit 4 is connected the exchanges data end of single-chip microcomputer 2, the output of power supply 6 is connected the power input of interface control unit 4, and other composition is identical with execution mode one with annexation.
Embodiment three: present embodiment is described in conjunction with Fig. 2, what present embodiment and execution mode two were different is that CAN interface circuit 1 also comprises watchdog circuit 7, the output of watchdog circuit 7 is connected the input of restarting of interface control unit 4, and other composition is identical with execution mode one with annexation.
Claims (3)
1.CAN intelligence communication node between bus and Ethernet, it is characterized in that it comprises CAN interface circuit (1), single-chip microcomputer (2) and ethernet interface circuit (3), the exchanges data end of CAN interface circuit (1) is connected a data exchange end of single-chip microcomputer (2), the exchanges data end of ethernet interface circuit (3) is connected another exchanges data end of single-chip microcomputer (2), a control output end of single-chip microcomputer (2) is connected the control input end of CAN interface circuit (1), and another control output end of single-chip microcomputer (2) is connected the control input end of ethernet interface circuit (3).
2. according to intelligence communication node between described CAN bus of claim 1 and Ethernet, it is characterized in that CAN interface circuit (1) comprises interface control unit (4), transmission circuit (5) and power supply (6), the control output end of interface control unit (4) is connected the control input end of transmission circuit (5), a data exchange end of interface control unit (4) is connected the exchanges data end of transmission circuit (5), another exchanges data end of interface control unit (4) is connected the exchanges data end of single-chip microcomputer (2), and the output of power supply (6) is connected the power input of interface control unit (4).
3. according to intelligence communication node between claim 1 or 2 described CAN buses and Ethernet, it is characterized in that CAN interface circuit (1) also comprises watchdog circuit (7), the output of watchdog circuit (7) is connected the input of restarting of interface control unit (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201401769U CN201994958U (en) | 2011-05-05 | 2011-05-05 | Intelligent communication node between CAN (controller area network) bus and Ethernet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201401769U CN201994958U (en) | 2011-05-05 | 2011-05-05 | Intelligent communication node between CAN (controller area network) bus and Ethernet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201994958U true CN201994958U (en) | 2011-09-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201401769U Expired - Fee Related CN201994958U (en) | 2011-05-05 | 2011-05-05 | Intelligent communication node between CAN (controller area network) bus and Ethernet |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201994958U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102937804A (en) * | 2012-11-10 | 2013-02-20 | 大连东方电器制造有限公司 | Control system of site work states of switch cabinet |
-
2011
- 2011-05-05 CN CN2011201401769U patent/CN201994958U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102937804A (en) * | 2012-11-10 | 2013-02-20 | 大连东方电器制造有限公司 | Control system of site work states of switch cabinet |
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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: 20110928 Termination date: 20120505 |