CN220455831U - Communication conversion card and redundant communication device - Google Patents
Communication conversion card and redundant communication device Download PDFInfo
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- CN220455831U CN220455831U CN202321804035.1U CN202321804035U CN220455831U CN 220455831 U CN220455831 U CN 220455831U CN 202321804035 U CN202321804035 U CN 202321804035U CN 220455831 U CN220455831 U CN 220455831U
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Abstract
The utility model provides a communication conversion card and a redundant communication device, which comprise a WAN interface, an FPGA chip, an MCU chip and a connector: the WAN interface is used for being connected with the controller; the FPGA chip is connected with the WAN interface and is used for transmitting data based on a first protocol with the controller through the WAN interface; the MCU chip is connected with the FPGA chip, converts data based on a first protocol transmitted by the FPGA chip into data based on a second protocol and provides the data to the connector, and converts the data based on the second protocol transmitted by the connector into data based on the first protocol and provides the data to the FPGA chip; the connector is connected with the MCU chip and the expansion I/O module and is used for transmitting data based on a second protocol between the MCU chip and the expansion I/O module. The communication conversion card and the redundant communication device can realize data interaction between the controller and the expansion I/O module, and have the advantages of good stability, easy maintenance and lower cost.
Description
Technical Field
The present utility model relates to the field of communication connection technologies, and in particular, to a communication conversion card and a redundant communication device.
Background
In the prior art, in order to meet the requirements of large industrial sites, the number of I/O modules in a control system is gradually increased. In a control system, one controller typically controls a plurality of I/O modules. However, the number of interfaces of the controller is limited, and the controller cannot be directly connected with a plurality of I/O modules; adding an interface to the controller results in increased volume and cost.
In addition, boards used in industrial sites are also required to have extremely high reliability and stability. Therefore, it is highly desirable to construct a communication conversion card that connects a controller with an expansion I/O module that is reliable and inexpensive.
Disclosure of Invention
In view of the above-mentioned drawbacks of the prior art, an object of the present utility model is to provide a communication conversion card and a redundant communication device, which can realize data interaction between a controller and an extended I/O module, and has good stability, easy maintenance and low cost.
To achieve the above and other related objects, the present utility model provides a communication conversion card, including a WAN interface, an FPGA chip, an MCU chip, and a connector: the WAN interface is used for being connected with the controller; the FPGA chip is connected with the WAN interface and is used for transmitting data based on a first protocol with the controller through the WAN interface; the MCU chip is connected with the FPGA chip, converts data based on a first protocol transmitted by the FPGA chip into data based on a second protocol and provides the data to the connector, and converts the data based on the second protocol transmitted by the connector into data based on the first protocol and provides the data to the FPGA chip; the connector is connected with the MCU chip and the expansion I/O module and is used for transmitting data based on a second protocol between the MCU chip and the expansion I/O module.
In an embodiment of the present utility model, an external expansion interface is further included for connecting to an external expansion device.
In an embodiment of the present utility model, the external expansion interface includes a LAN interface and an RS485 communication interface.
In an embodiment of the present utility model, the first protocol uses PowerLink protocol; the second protocol adopts ModBus protocol.
In an embodiment of the present utility model, the communication conversion card further includes an indicator light for indicating a power state, a fault state, a communication state, and a redundancy state of the communication conversion card.
In an embodiment of the utility model, the connector is an euro connector.
In one embodiment of the utility model, the connector includes 20I/O lanes, the 20I/O lanes including 16I/O point-to-point communications, 1 HART functions and 3 reservation expansion functions.
The utility model also provides a redundant communication device, which comprises a master controller, a slave controller, a master communication conversion card, a slave communication conversion card and an expansion I/O module; the master communication conversion card and the slave communication conversion card adopt the communication conversion card;
the master controller and the slave controller are redundant; the master controller is in a working state in an initial state, and the slave controller is in a backup state; the slave controller is in a working state only when the master controller fails;
the master communication conversion card and the slave communication conversion card are redundant, the master communication conversion card is in a working state in an initial state, and the slave communication conversion card is in a backup state; only when the master communication conversion card fails, the slave communication conversion card is in a working state;
the expansion I/O module is connected with the communication conversion card in a working state.
In an embodiment of the present utility model, the master communication conversion card and the slave communication conversion card each include a GPIO port, and the GPIO port is used for determining a master-slave state of the master communication conversion card and the slave communication conversion card.
In an embodiment of the present utility model, the master communication conversion card and the slave communication conversion card each include a PHY chip, and the PHY chip is configured to implement information interaction between the master communication conversion card and the slave communication conversion card.
As described above, the communication conversion card and the redundant communication device of the present utility model have the following advantages:
(1) The data interaction between the controller and the expansion I/O module can be realized, the stability is good, the maintenance is easy, and the cost is lower;
(2) The mutual redundancy of the master-slave communication conversion cards ensures the stability of communication between the controller and the expansion I/O module, and the switching process between the master-slave communication conversion cards is undisturbed and has low delay, thereby improving the reliability of communication;
(3) The number of I/O modules is effectively expanded, and the requirements of large industrial sites are met;
(4) The 96Pin European connector is adopted as a connector assembly, and has the characteristic of convenient installation and maintenance.
Drawings
FIG. 1 is a schematic diagram of a communication conversion card according to an embodiment of the utility model;
fig. 2 is a schematic diagram of a redundant communication apparatus according to an embodiment of the present utility model.
Detailed Description
Other advantages and effects of the present utility model will become apparent to those skilled in the art from the following disclosure, which describes the embodiments of the present utility model with reference to specific examples. The utility model may be practiced or carried out in other embodiments that depart from the specific details, and the details of the present description may be modified or varied from the spirit and scope of the present utility model. It should be noted that the following embodiments and features in the embodiments may be combined with each other without conflict.
It should be noted that the illustrations provided in the following embodiments merely illustrate the basic concept of the present utility model by way of illustration, and only the components related to the present utility model are shown in the drawings and are not drawn according to the number, shape and size of the components in actual implementation, and the form, number and proportion of the components in actual implementation may be arbitrarily changed, and the layout of the components may be more complicated.
The communication conversion card and the redundant communication device realize data interaction between the controller and the expansion I/O modules, thereby expanding the number of the I/O modules, having good system stability, meeting the requirements of actual application scenes, being easy to maintain, having lower cost and having great practicability.
As shown in fig. 1, in an embodiment, the communication conversion card of the present utility model includes a WAN interface 1, an FPGA chip 2, an MCU chip 3, and a connector 4.
The WAN interface 1 is used for being connected with a controller. Wherein the WAN interface 1 enables a connection between the communication conversion card and the controller. Specifically, the number of WAN interfaces 1 is one or more. Preferably, the number of the WAN interfaces 1 is two.
The FPGA chip 2 is connected to the WAN interface 1, and is configured to perform data transmission based on a first protocol with the controller via the WAN interface 1. Wherein, when the controller performs a write operation on the extended I/O model, the controller transmits data to the FPGA chip 2 based on a first protocol such as PowerLink protocol via the WAN interface 1. When the controller performs a read operation on the extended I/O model, the FPGA chip 2 transmits data to the controller based on a first protocol, such as PowerLink protocol, via the WAN interface 1. In the utility model, the FPGA chip 2 is used for processing data in parallel, thereby improving timeliness and reducing time delay.
The MCU chip 3 is connected to the FPGA chip 2, converts data based on the first protocol transmitted by the FPGA chip 2 into data based on the second protocol and provides the data to the connector 4, and converts data based on the second protocol transmitted by the connector 4 into data based on the first protocol and provides the data to the FPGA chip 2.
The MCU chip 3 is connected with the FPGA chip 2 through a parallel bus. The MCU chip 3 is used for implementing data type conversion. Specifically, when the controller performs a write operation on the extended I/O model, the MCU chip 3 converts the data based on the first protocol transmitted from the FPGA chip 2 into data based on a second protocol such as ModBus protocol and supplies the data to the connector 4. When the controller performs a read operation on the extended I/O model, the MCU chip 3 converts the second protocol-based data transmitted by the connector 4 into first protocol-based data and provides the first protocol-based data to the FPGA chip 2. Preferably, the MCU chip 3 can adopt ARM Cortex-M4.
The connector 4 is connected to the MCU chip 3 and the extended I/O module for transmitting data based on a second protocol between the MCU chip 3 and the extended I/O module.
Wherein, the connector 4 adopts 96Pin European style connector, thereby facilitating the plug-in processing of the expansion I/O module. In one embodiment, the connector 4 includes 20I/O lanes, the 20I/O lanes including 16I/O point-to-point communications, 1 HART functions, and 3 reservation expansion functions. Therefore, the number of the expansion I/O modules is less than or equal to 16.
In an embodiment, the communication conversion card of the present utility model further includes an external expansion interface 5 for connecting to an external expansion device. Preferably, the external expansion interface includes a LAN interface and an RS485 communication interface. The number of the LAN interfaces and the RS485 communication interfaces can be set according to requirements, and the number of the LAN interfaces and the number of the RS485 communication interfaces are generally two.
In an embodiment of the present utility model, the communication conversion card further includes an indicator light for indicating a power state, a fault state, a communication state and a redundancy state of the communication conversion card. After power-on, the power state indicator lamp is always on; during normal communication, the communication state indicator lamp is always on; when the redundant communication conversion card exists, the redundant status indicator lamp is always on; when a fault occurs, the fault status indicator lights flash red lights.
As shown in fig. 2, in one embodiment, the redundant communication apparatus of the present utility model includes a master controller, a slave controller, a master communication switch card, a slave communication switch card, and an expansion I/O module; the master communication conversion card and the slave communication conversion card adopt the communication conversion card.
The master controller and the slave controller are redundant; the master controller is in a working state in an initial state, and the slave controller is in a backup state; and the slave controller is in a working state only when the master controller fails.
The master communication conversion card and the slave communication conversion card are redundant, the master communication conversion card is in a working state in an initial state, and the slave communication conversion card is in a backup state; the slave communication conversion card is in an operating state only when the master communication conversion card fails.
The expansion I/O module is connected with the communication conversion card in a working state.
Therefore, through the redundancy arrangement, when the current working controller and the communication conversion card fail, the current working controller and the current working communication conversion card can be timely switched to the backup controller and the current working communication conversion card, so that the stable operation of the system is ensured, the switching process is undisturbed and has low delay, and the reliability of the system is improved.
In an embodiment of the present utility model, the master communication conversion card and the slave communication conversion card each include a GPIO port, and the GPIO port is configured to determine a master-slave state of the master communication conversion card and the slave communication conversion card, so as to select a communication conversion card in a working state to be connected with an expansion I/O module.
In an embodiment of the present utility model, the master communication conversion card and the slave communication conversion card each include a PHY chip, and the PHY chip is configured to implement information interaction between the master communication conversion card and the slave communication conversion card. The PHY chip is connected with the corresponding MCU chip and the connector.
In summary, the communication conversion card and the redundant communication device can realize data interaction between the controller and the expansion I/O module, and have the advantages of good stability, easy maintenance and lower cost; the mutual redundancy of the master-slave communication conversion cards ensures the stability of communication between the controller and the expansion I/O module, and the switching process between the master-slave communication conversion cards is undisturbed and has low delay, thereby improving the reliability of communication; the number of I/O modules is effectively expanded, and the requirements of large industrial sites are met; the 96Pin European connector is adopted as a connector assembly, and has the characteristic of convenient installation and maintenance. Therefore, the utility model effectively overcomes various defects in the prior art and has high industrial utilization value.
The above embodiments are merely illustrative of the principles of the present utility model and its effectiveness, and are not intended to limit the utility model. Modifications and variations may be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the utility model. Accordingly, it is intended that all equivalent modifications and variations of the utility model be covered by the claims, which are within the ordinary skill of the art, be within the spirit and scope of the present disclosure.
Claims (10)
1. A communication conversion card, characterized in that: the device comprises a WAN interface, an FPGA chip, an MCU chip and a connector:
the WAN interface is used for being connected with the controller;
the FPGA chip is connected with the WAN interface and is used for transmitting data based on a first protocol with the controller through the WAN interface;
the MCU chip is connected with the FPGA chip, converts data based on a first protocol transmitted by the FPGA chip into data based on a second protocol and provides the data to the connector, and converts the data based on the second protocol transmitted by the connector into data based on the first protocol and provides the data to the FPGA chip;
the connector is connected with the MCU chip and the expansion I/O module and is used for transmitting data based on a second protocol between the MCU chip and the expansion I/O module.
2. The communication conversion card according to claim 1, wherein: an external expansion interface is also included for connecting to an external expansion device.
3. The communication conversion card according to claim 2, wherein: the external expansion interface comprises a LAN interface and an RS485 communication interface.
4. The communication conversion card according to claim 1, wherein: the first protocol adopts a PowerLink protocol;
the second protocol adopts ModBus protocol.
5. The communication conversion card according to claim 1, wherein: the communication conversion card also comprises an indicator light which is used for indicating the power supply state, the fault state, the communication state and the redundancy state of the communication conversion card.
6. The communication conversion card according to claim 1, wherein: the connector adopts an European style connector.
7. The communication conversion card according to claim 1, wherein: the connector includes 20I/O lanes, the 20I/O lanes including 16I/O point-to-point communications, 1 HART functions, and 3 reservation expansion functions.
8. A redundant communications apparatus, characterized by: the system comprises a master controller, a slave controller, a master communication conversion card, a slave communication conversion card and an expansion I/O module; the master communication conversion card and the slave communication conversion card adopt the communication conversion card according to any one of claims 1 to 7;
the master controller and the slave controller are redundant; the master controller is in a working state in an initial state, and the slave controller is in a backup state; the slave controller is in a working state only when the master controller fails;
the master communication conversion card and the slave communication conversion card are redundant, the master communication conversion card is in a working state in an initial state, and the slave communication conversion card is in a backup state; only when the master communication conversion card fails, the slave communication conversion card is in a working state;
the expansion I/O module is connected with the communication conversion card in a working state.
9. The redundant communication apparatus of claim 8, wherein: the master communication conversion card and the slave communication conversion card both comprise GPIO ports, and the GPIO ports are used for judging master-slave states of the master communication conversion card and the slave communication conversion card.
10. The redundant communication apparatus of claim 8, wherein: the master communication conversion card and the slave communication conversion card both comprise PHY chips, and the PHY chips are used for realizing information interaction between the master communication conversion card and the slave communication conversion card.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321804035.1U CN220455831U (en) | 2023-07-10 | 2023-07-10 | Communication conversion card and redundant communication device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321804035.1U CN220455831U (en) | 2023-07-10 | 2023-07-10 | Communication conversion card and redundant communication device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220455831U true CN220455831U (en) | 2024-02-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321804035.1U Active CN220455831U (en) | 2023-07-10 | 2023-07-10 | Communication conversion card and redundant communication device |
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| Country | Link |
|---|---|
| CN (1) | CN220455831U (en) |
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2023
- 2023-07-10 CN CN202321804035.1U patent/CN220455831U/en active Active
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