CN105227417A - EPA bus and HART bus communication bridge - Google Patents
EPA bus and HART bus communication bridge Download PDFInfo
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- CN105227417A CN105227417A CN201510743714.6A CN201510743714A CN105227417A CN 105227417 A CN105227417 A CN 105227417A CN 201510743714 A CN201510743714 A CN 201510743714A CN 105227417 A CN105227417 A CN 105227417A
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Abstract
The present invention relates to EPA bus and HART bus communication bridge, it comprises HART bus interface, kernel control module and EPA bus interface, HART bus interface comprises HART chip and peripheral circuit thereof, kernel control module comprises ARM control chip and peripheral circuit thereof, EPA bus interface comprises EPA network chip and peripheral circuit thereof and network transformer, wherein HART chip and peripheral circuit thereof are connected with ARM control chip, and EPA network chip and peripheral circuit thereof are connected with ARM control chip and peripheral circuit thereof, network transformer respectively.Technique effect is the mutual communication achieving HART bus and EPA bus, make HART equipment and EPA equipment can coexist in same system, when the device upgrade of industrial process control system, due to newly, old equipment can be compatible, greatly reduces system reform cost.
Description
Technical field
The present invention relates to the field bus communication bridge in industrial stokehold, the communication bridge particularly between a kind of EPA bus and HART bus.
Background technology
There is multiple bus standard at industrial automation at present, fieldbus popular at present mainly contains CAN(control area net（CAN） network), PROFIBUS(Process FieldbusROFIBUS), HART(highway addressable remote transducer), FF(foundation fieldbus), LonWorks.HART field bus technique wherein based on HART technology is most widely used a kind of field bus technique in the world.These bus standards are mostly formulated and promotion and implementation by esbablished corporation in automatic field.Due to reasons such as respective interests and technical know-hows, different bus standards causes communication difficulties between various bus, access mutually and operation cannot be realized between bus apparatus, when the device upgrade of industrial process control system, significantly incompatible between existing equipment and new equipment, thus causing used equipment to eliminate, system reform cost also improves thereupon greatly.
Deposit at current multiple fieldbus, under situation that cannot be unified, Industrial Ethernet becomes new developing direction, and it has outstanding features such as being widely used, with low cost, technical resource abundant, reliability is high, transmission speed is fast.Industrial automation Ethernet EPA bus standard is that one has wide application prospect at present, and has the industrial Ethernet technology of China's independent intellectual property right, and other bus and the mutual communication of EPA bus become the focus studied at present.
Summary of the invention
In view of above-mentioned prior art situation, the object of this invention is to provide a kind of EPA bus and HART bus communication bridge, this bridge makes current widely used HART bus signals convert EPA bus signals to, realizes HART equipment and EPA coexistence in same system.
The technical scheme taked is, a kind of EPA bus and HART bus communication bridge, it is characterized in that: it comprises HART bus interface, kernel control module and EPA bus interface, HART bus interface comprises HART chip and peripheral circuit thereof, kernel control module comprises ARM control chip and peripheral circuit thereof, EPA bus interface comprises EPA network chip and peripheral circuit thereof and network transformer, wherein HART chip and peripheral circuit thereof are connected with ARM control chip, EPA network chip and peripheral circuit thereof respectively with ARM control chip and peripheral circuit thereof, network transformer is connected.
The beneficial effect that the present invention produces is: the mutual communication realizing HART bus and EPA bus, makes HART equipment and EPA equipment can coexist in same system, when the device upgrade of industrial process control system, greatly reduces system reform cost.
Accompanying drawing explanation
Fig. 1 is catenation principle block diagram of the present invention.
Fig. 2 is HART bus interface electrical schematic diagram of the present invention.
Fig. 3 is kernel control module of the present invention and EPA bus interface electrical schematic diagram.
Embodiment
Below in conjunction with accompanying drawing, the invention will be further described.
As shown in Figure 1, 2, 3, EPA bus and HART bus communication bridge comprise HART bus interface, kernel control module and EPA bus interface, HART bus interface comprises HART chip and peripheral circuit thereof, kernel control module and EPA bus interface comprise ARM control chip, EPA network chip and peripheral circuit thereof and transformer L, wherein HART chip and peripheral circuit thereof are connected with ARM control chip, and EPA network chip and peripheral circuit thereof are connected with ARM control chip and peripheral circuit thereof, network transformer respectively.(see figure 1)
HART chip adopts A5191 chip, and ARM control chip adopts AT91SAM7x256 chip, and EPA network chip adopts RTL8201BL chip, and network transformer adopts the PRJ-005A transformer of band network interface, and transformer L is self-control.
The pin two 5 of A5191 chip is connected with the pin 81 of AT91SAM7x256 chip, the pin two 3 of A5191 chip is connected with the pin 82 of AT91SAM7x256 chip, the pin two 2 of A5191 chip and the pin 86 of AT91SAM7x256 chip, the pin 6 of A5191 chip connects, the pin 7 of the one termination A5191 chip of electric capacity C1, the pin 8 of another termination electronic switch ADG1419 chip of electric capacity C1, the pin one 5 of the one termination A5191 chip of resistance R1, the other end of resistance R1 and one end of electric capacity C2, one end of electric capacity C3, one end of resistance R3 connects, the other end of electric capacity C2 is connected with one end of resistance R2, the other end ground connection of resistance R3, the other end of electric capacity C3 is connected with the pin two of electronic switch ADG1419 chip, the other end of resistance R2 and one end of resistance R5, the pin one 4 of A5191 chip connects, the other end ground connection of resistance R5, the pin one of electronic switch ADG1419 chip is connected with the pin one of transformer L, the pin two ground connection of transformer L, the pin 3 of transformer L, 4 are concatenated into HART bus.(see figure 2)
The pin two 5 of RTL8201BL chip is connected with the pin two 8 of AT91SAM7x256 chip, the pin two 6 of RTL8201BL chip is connected with the pin two 7 of AT91SAM7x256 chip, the pin 6 of RTL8201BL chip is connected with the pin 34 of AT91SAM7x256 chip, the pin 5 of RTL8201BL chip is connected with the pin 31 of AT91SAM7x256 chip, the pin 4 of RTL8201BL chip is connected with the pin 44 of AT91SAM7x256 chip, the pin 3 of RTL8201BL chip is connected with the pin 45 of AT91SAM7x256 chip, the pin two of RTL8201BL chip is connected with the pin 41 of AT91SAM7x256 chip, the pin 7 of RTL8201BL chip is connected with the pin 40 of AT91SAM7x256 chip, the pin two 2 of RTL8201BL chip is connected with the pin 35 of AT91SAM7x256 chip, the pin two 1 of RTL8201BL chip is connected with the pin 34 of AT91SAM7x256 chip, the pin two 0 of RTL8201BL chip is connected with the pin 31 of AT91SAM7x256 chip, the pin one 9 of RTL8201BL chip is connected with the pin 30 of AT91SAM7x256 chip, the pin one 8 of RTL8201BL chip is connected with the pin two 9 of AT91SAM7x256 chip, the pin one 6 of RTL8201BL chip is connected with the pin 36 of AT91SAM7x256 chip, the pin one of RTL8201BL chip is connected with the pin 53 of AT91SAM7x256 chip, the pin two 3 of RTL8201BL chip is connected with the pin 54 of AT91SAM7x256 chip, the pin two 4 of RTL8201BL chip is connected with the pin 38 of AT91SAM7x256 chip, the pin 3 of PRJ-005A transformer (network transformer of band network interface) is connected with the pin 31 of RTL8201BL chip, the pin 6 of PRJ-005A transformer is connected with the pin 30 of RTL8201BL chip, and the pin one of PRJ-005A transformer is connected with the pin 34 of RTL8201BL chip, the pin two of PRJ-005A transformer is connected with the pin 33 of RTL8201BL chip, and the pin 5 of PRJ-005A transformer is connected with one end of electric capacity C5, the other end ground connection of electric capacity C5.(see figure 3)
The prefabricated software systems of ARM control chip AT91SAM7x256, and transplant the ICP/IP protocol having embedded OS uC/OS-II and LwIP(to simplify) agreement, and add EPA layer on this basis to realize EPA agreement, and add HART protocol conversion code in application layer.
Claims (1)
1. an EPA bus and HART bus communication bridge, it is characterized in that: it comprises bus interface, kernel control module and EPA bus interface, described HART bus interface comprises transformer L and HART chip and peripheral circuit thereof, the described kernel control module EPA bus interface comprised described in ARM control chip and peripheral circuit thereof comprises EPA network chip and peripheral circuit thereof and network transformer, wherein HART chip adopts A5191 chip, ARM control chip adopts AT91SAM7x256 chip, EPA network chip adopts RTL8201BL chip, network transformer adopts the PRJ-005A transformer of band network interface, A5191 chip is connected with AT91SAM7x256 chip and is connected with the pin 81 of AT91SAM7x256 chip for the pin two 5 of A5191 chip, the pin two 3 of A5191 chip is connected with the pin 82 of AT91SAM7x256 chip, the pin two 2 of A5191 chip and the pin 86 of AT91SAM7x256 chip, the pin 6 of A5191 chip connects, the pin 7 of the one termination A5191 chip of electric capacity C1, the pin 8 of another termination electronic switch ADG1419 chip of electric capacity C1, the pin one 5 of the one termination A5191 chip of resistance R1, the other end of resistance R1 and one end of electric capacity C2, one end of electric capacity C3, one end of resistance R3 connects, the other end of electric capacity C2 is connected with one end of resistance R2, the other end ground connection of resistance R3, the other end of electric capacity C3 is connected with the pin two of electronic switch ADG1419 chip, the other end of resistance R2 and one end of resistance R5, the pin one 4 of A5191 chip connects, the other end ground connection of resistance R5, the pin one of electronic switch ADG1419 chip is connected with the pin one of transformer L, the pin two ground connection of transformer L, the pin 3 of transformer L, 4 are concatenated into HART bus, RTL8201BL chip is connected with AT91SAM7x256 chip and is connected with the pin two 8 of AT91SAM7x256 chip for the pin two 5 of RTL8201BL chip, the pin two 6 of RTL8201BL chip is connected with the pin two 7 of AT91SAM7x256 chip, the pin 6 of RTL8201BL chip is connected with the pin 34 of AT91SAM7x256 chip, the pin 5 of RTL8201BL chip is connected with the pin 31 of AT91SAM7x256 chip, the pin 4 of RTL8201BL chip is connected with the pin 44 of AT91SAM7x256 chip, the pin 3 of RTL8201BL chip is connected with the pin 45 of AT91SAM7x256 chip, the pin two of RTL8201BL chip is connected with the pin 41 of AT91SAM7x256 chip, the pin 7 of RTL8201BL chip is connected with the pin 40 of AT91SAM7x256 chip, the pin two 2 of RTL8201BL chip is connected with the pin 35 of AT91SAM7x256 chip, the pin two 1 of RTL8201BL chip is connected with the pin 34 of AT91SAM7x256 chip, the pin two 0 of RTL8201BL chip is connected with the pin 31 of AT91SAM7x256 chip, the pin one 9 of RTL8201BL chip is connected with the pin 30 of AT91SAM7x256 chip, the pin one 8 of RTL8201BL chip is connected with the pin two 9 of AT91SAM7x256 chip, the pin one 6 of RTL8201BL chip is connected with the pin 36 of AT91SAM7x256 chip, the pin one of RTL8201BL chip is connected with the pin 53 of AT91SAM7x256 chip, the pin two 3 of RTL8201BL chip is connected with the pin 54 of AT91SAM7x256 chip, the pin two 4 of RTL8201BL chip is connected with the pin 38 of AT91SAM7x256 chip, PRJ-005A transformer is connected with RTL8201BL chip and is connected with the pin 31 of RTL8201BL chip for the pin 3 of PRJ-005A transformer, the pin 6 of PRJ-005A transformer is connected with the pin 30 of RTL8201BL chip, the pin one of PRJ-005A transformer is connected with the pin 34 of RTL8201BL chip, the pin two of PRJ-005A transformer is connected with the pin 33 of RTL8201BL chip, the pin 5 of PRJ-005A transformer is connected with one end of electric capacity C5, the other end ground connection of electric capacity C5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510743714.6A CN105227417A (en) | 2015-11-05 | 2015-11-05 | EPA bus and HART bus communication bridge |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510743714.6A CN105227417A (en) | 2015-11-05 | 2015-11-05 | EPA bus and HART bus communication bridge |
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| CN105227417A true CN105227417A (en) | 2016-01-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510743714.6A Pending CN105227417A (en) | 2015-11-05 | 2015-11-05 | EPA bus and HART bus communication bridge |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113612674A (en) * | 2021-09-30 | 2021-11-05 | 浙江国利信安科技有限公司 | Time division multiplexing communication method for EPA system, EPA device and medium |
| CN113839847A (en) * | 2021-11-25 | 2021-12-24 | 浙江国利信安科技有限公司 | Vehicle-mounted communication method, vehicle-mounted electronic device, vehicle-mounted communication system, and medium |
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| CN203563088U (en) * | 2013-11-14 | 2014-04-23 | 中环天仪股份有限公司 | Protocol conversion board of industrial Ethernet and HART bus |
| CN205142256U (en) * | 2015-11-05 | 2016-04-06 | 中环天仪股份有限公司 | EPA bus and HART bus communication network bridge |
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2015
- 2015-11-05 CN CN201510743714.6A patent/CN105227417A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN2640135Y (en) * | 2003-09-11 | 2004-09-08 | 北京华控技术有限责任公司 | Network interconnection unit for connecting high-speed Ethernet and HART bus |
| US20070019560A1 (en) * | 2005-07-19 | 2007-01-25 | Rosemount Inc. | Interface module with power over ethernet function |
| US20070057783A1 (en) * | 2005-07-20 | 2007-03-15 | Reller Troy M | Field device with power over Ethernet |
| US20120173671A1 (en) * | 2005-09-12 | 2012-07-05 | Rockwell Automation Technologies, Inc. | Network communications in an industrial automation environment |
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| CN203563088U (en) * | 2013-11-14 | 2014-04-23 | 中环天仪股份有限公司 | Protocol conversion board of industrial Ethernet and HART bus |
| CN205142256U (en) * | 2015-11-05 | 2016-04-06 | 中环天仪股份有限公司 | EPA bus and HART bus communication network bridge |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113612674A (en) * | 2021-09-30 | 2021-11-05 | 浙江国利信安科技有限公司 | Time division multiplexing communication method for EPA system, EPA device and medium |
| CN113612674B (en) * | 2021-09-30 | 2022-01-04 | 浙江国利信安科技有限公司 | Time division multiplexing communication method for EPA system, EPA device and medium |
| CN113839847A (en) * | 2021-11-25 | 2021-12-24 | 浙江国利信安科技有限公司 | Vehicle-mounted communication method, vehicle-mounted electronic device, vehicle-mounted communication system, and medium |
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