CN202696644U - CAN bus based bridge with strong anti-interference capability and wide applicability - Google Patents
CAN bus based bridge with strong anti-interference capability and wide applicability Download PDFInfo
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- CN202696644U CN202696644U CN 201220400075 CN201220400075U CN202696644U CN 202696644 U CN202696644 U CN 202696644U CN 201220400075 CN201220400075 CN 201220400075 CN 201220400075 U CN201220400075 U CN 201220400075U CN 202696644 U CN202696644 U CN 202696644U
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Abstract
The utility model discloses a CAN bus based bridge with strong anti-interference capability and wide applicability. The bridge comprises an ARM microcontroller and four CAN transceiver modules, wherein the ARM microcontroller comprises four CAN controllers, each CAN transceiver module is connected with one CAN controller of the ARM microcontroller, each CAN transceiver module is also connected with an interface module, and a 120 omega resistor is connected between the CAN transceiver module and the interface module. The CAN bus based bridge has the advantages of strong anti-interference capability and wide applicability and can be used in various occasions.
Description
Technical field
The utility model relates to a kind of bridge, is specifically related to a kind of based on the strong and widely applicable bridge of the antijamming capability of CAN bus.
Background technology
Bridge (Bridge) is the bridge that connects between a local area network (LAN) and another local area network (LAN).Bridge is a kind of equipment that belongs to network layer, its effect is extended network and means of communication, at various transmission medium repeating data signals, the distance of extended network, simultaneously will there be selectively again the signal of address to send to another transmission medium from a transmission medium, and can effectively limits inessential communication in two medium systems.Bridge gets up two similar network connections, and the circulation of network data is managed.In the middle of the utilization of reality, the utilization of bridge is very general, and bridge can be divided into local bridge and remote bridge.Bridge is in user's use procedure, and its stability is very important, and especially in the middle of intra-company uses the process of bridge, its stability is taken seriously especially to be wanted.
The utility model content
The utility model has overcome the deficiencies in the prior art, and solution is provided.
For solving above-mentioned technical problem, the utility model by the following technical solutions:
A kind of based on the strong and widely applicable bridge of the antijamming capability of CAN bus, it is characterized in that: it comprises ARM microcontroller and 4 road CAN transceiver modules, described ARM microcontroller comprises 4 road CAN controllers, described 4 road CAN transceiver modules link to each other with 4 road CAN controllers of ARM microcontroller respectively, described CAN transceiver module also is connected with interface module, and also is connected with the resistance of 120 Ω between CAN transceiver module and the interface module.
Further technical scheme is:
Described ARM microcontroller is LPC2194.
Described CAN transceiver module is CTM8251T.
The characteristics of LPC2194 are as follows: have 32 ARM7 microcontroller, with the embedded high-speed Flash memory of 256 KB.32 codes can move under maximum clock frequency, and power consumption is extremely low, and processing speed is exceedingly fast; Carry 4 road interconnected CAN controllers, support the standard of CAN2.0B and ISO1198-1 fully, each CAN controller all can be realized the speed of 1Mbps.
CTM8251T is the general CAN transceiver module of a band isolation.This inside modules is integrated all essential CAN isolation and CAN transceiving devices have the effect of CAN-bus bus overvoltage protection.
Be aspect the total at software, for conversion speed and the stability that improves system, the design has adopted interrupts receiving and mode that inquiry sends.System break receives the data on the CAN bus, and according to the distribution of Route Selection and identifier select to send to other 3 the tunnel, thereby finish the work of bridge.
Compared with prior art, the beneficial effects of the utility model are:
1, the integrated level of LPC2194 and CTM8251T chip is high, makes the integrated level of whole circuit high.
2, the design of CAN bus makes its antijamming capability strong, can use widely in fields such as auto industry, mechanical industry, textile industry, robot, Digit Control Machine Tool, medicine equipments.
3, the design of CAN bus can be suitable for the multichannel wiring network from the express network to low speed.
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.
Label among the figure is: 1, ARM microcontroller; 2, CAN controller; 3, CAN transceiver module; 4, interface module.
Embodiment
Below in conjunction with accompanying drawing the utility model is further described.Execution mode of the present utility model includes but not limited to the following example.
Embodiment
As shown in Figure 1 a kind of based on the strong and widely applicable bridge of the antijamming capability of CAN bus, it comprises ARM microcontroller 1 and 4 road CAN transceiver modules 3, ARM microcontroller 1 comprises 4 road CAN controllers 2,4 road CAN transceiver modules 3 link to each other with 4 road CAN controllers 2 of ARM microcontroller 1 respectively, CAN transceiver module 3 also is connected with interface module 4, and also is connected with the resistance of 120 Ω between CAN transceiver module 3 and the interface module 4.ARM microcontroller 1 is LPC2194.CAN transceiver module 3 is CTM8251T.
According to the above embodiments, can well finish the utility model.
Be as mentioned above embodiment of the present utility model.The utility model is not limited to above-mentioned execution mode, and anyone should learn the structural change of making under enlightenment of the present utility model, every with the utlity model has identical or close technical scheme, all fall within the protection range of the present utility model.
Claims (3)
1. one kind based on the strong and widely applicable bridge of the antijamming capability of CAN bus, it is characterized in that: it comprises ARM microcontroller (1) and 4 road CAN transceiver modules (3), described ARM microcontroller (1) comprises 4 road CAN controllers (2), described 4 road CAN transceiver modules (3) link to each other with 4 road CAN controllers (2) of ARM microcontroller (1) respectively, described CAN transceiver module (3) also is connected with interface module (4), and also is connected with the resistance of 120 Ω between CAN transceiver module (3) and the interface module (4).
2. according to claim 1 based on the strong and widely applicable bridge of the antijamming capability of CAN bus, it is characterized in that: described ARM microcontroller (1) is LPC2194.
3. according to claim 1 based on the strong and widely applicable bridge of the antijamming capability of CAN bus, it is characterized in that: described CAN transceiver module (3) is CTM8251T.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220400075 CN202696644U (en) | 2012-08-14 | 2012-08-14 | CAN bus based bridge with strong anti-interference capability and wide applicability |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220400075 CN202696644U (en) | 2012-08-14 | 2012-08-14 | CAN bus based bridge with strong anti-interference capability and wide applicability |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202696644U true CN202696644U (en) | 2013-01-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220400075 Expired - Fee Related CN202696644U (en) | 2012-08-14 | 2012-08-14 | CAN bus based bridge with strong anti-interference capability and wide applicability |
Country Status (1)
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| CN (1) | CN202696644U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103346946A (en) * | 2013-06-28 | 2013-10-09 | 成都思迈科技发展有限责任公司 | CAN bridges |
| CN103595608A (en) * | 2012-08-14 | 2014-02-19 | 成都思迈科技发展有限责任公司 | CAN bus-based bridge with strong anti-interference capability and wide applicability |
-
2012
- 2012-08-14 CN CN 201220400075 patent/CN202696644U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103595608A (en) * | 2012-08-14 | 2014-02-19 | 成都思迈科技发展有限责任公司 | CAN bus-based bridge with strong anti-interference capability and wide applicability |
| CN103346946A (en) * | 2013-06-28 | 2013-10-09 | 成都思迈科技发展有限责任公司 | CAN bridges |
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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: 20130123 Termination date: 20130814 |