CN215986940U - Industrial wireless gateway device compatible with multi-field bus protocol - Google Patents
Industrial wireless gateway device compatible with multi-field bus protocol Download PDFInfo
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Abstract
The utility model relates to an industrial wireless gateway device compatible with a multi-field bus protocol, which comprises a microprocessor module, a Profibus-DP communication module, a CAN communication module, a Modbus TCP communication module and a ZigBee communication module, wherein the Profibus-DP communication module is used for receiving a plurality of field bus protocols; the microprocessor module is respectively connected with the Profibus-DP communication module, the CAN communication module, the Modbus TCP communication module and the ZigBee communication module; the microprocessor module is used for controlling the Profibus-DP communication module, the CAN communication module Modbus TCP communication module and the ZigBee communication module by adopting a preset multi-protocol conversion communication model, and carrying out protocol conversion on the ZigBee wireless sensor network and various field bus networks. The utility model can convert the protocols of the ZigBee wireless sensor network and various field buses, is beneficial to improving the protocol conversion efficiency of the field buses and reducing communication conflicts.
Description
Technical Field
The application relates to the technical field of industrial communication conversion, in particular to an industrial wireless gateway device compatible with a multi-field bus protocol.
Background
The fieldbus plays a very important role in the field of industrial communication due to its advantages of good real-time performance, high stability, intellectualization and the like, but becomes an inevitable problem when the industrial environment is severe or the field devices are too scattered, the wiring is difficult and the transmission distance is limited. In recent years, the ZigBee technology has been one of the technologies of receiving much attention in the industrial wireless communication technology because of its advantages of low cost, low power consumption, flexible networking, etc., but there are more than ten kinds of industrial field bus standards, among which Profibus-DP bus, CAN bus, Modbus TCP industrial ethernet are most widely used, and these buses have the problems of heterogeneity and great interoperation difficulty, etc., and protocol conversion is required to implement information exchange between heterogeneous buses.
In the prior art, patents such as "an industrial wireless gateway device" and "a ZigBee network and CAN bus protocol converter" are all designed for converting a ZigBee wireless network into a field bus, and for example, patents "a multi-protocol conversion device based on wireless ZigBee, CAN bus and Modbus TCP and an implementation method thereof", although the problem of interconnection between a plurality of field buses and wireless networks is also studied, the protocol conversion method is to directly and simply combine a plurality of single-protocol gateway models into a multi-protocol gateway communication model, the protocol conversion mode is low in efficiency and low in communication speed, and when a plurality of field bus networks access field terminal devices or nodes simultaneously, problems such as communication conflicts occur, and therefore, the inventor thinks that the existing protocol conversion mode of a plurality of field buses needs further improvement.
SUMMERY OF THE UTILITY MODEL
In order to overcome the defects of the prior art, the application provides the industrial wireless gateway device compatible with the multi-field bus protocols, which can convert protocols of the ZigBee wireless sensor network and various field buses, solve the problems of protocol mismatching and low communication efficiency between heterogeneous networks, contribute to improving the protocol conversion efficiency of the multi-field buses and reduce communication conflicts.
In a first aspect, the application provides an industrial wireless gateway device compatible with multiple field bus protocols, the device comprises a microprocessor module, a Profibus-DP communication module, a CAN communication module, a Modbus TCP communication module and a ZigBee communication module; the microprocessor module is respectively connected with the Profibus-DP communication module, the CAN communication module, the Modbus TCP communication module and the ZigBee communication module;
the Profibus-DP communication module is used for being in communication connection with a preset Profibus-DP bus network and used as a slave node of a Profibus-DP main network;
the CAN communication module is used for being in communication connection with a preset CAN bus network and used as a slave node of a CAN backbone network;
the Modbus TCP communication module is used for being in communication connection with a preset Modbus TCP industrial Ethernet and used as a slave node of a Modbus TCP main network;
the ZigBee communication module is used for being in communication connection with a preset ZigBee wireless sensor network and used as a main node accessed by the ZigBee wireless sensor network;
the microprocessor module is used for controlling the Profibus-DP communication module, the CAN communication module, the Modbus TCP communication module and the ZigBee communication module by adopting a preset multi-protocol conversion communication model, and carrying out protocol conversion on the ZigBee wireless sensor network and various field bus networks.
Optionally, the device further comprises a power module, and the power module is respectively connected with the microprocessor module, the Profibus-DP communication module, the CAN communication module, the Modbus TCP communication module and the ZigBee communication module to provide power.
Optionally, the Profibus-DP communication module includes a protocol chip, a first photoelectric isolation circuit and a driver, the microprocessor module is connected to the protocol chip, the protocol chip is connected to the first photoelectric isolation circuit, the first photoelectric isolation circuit is connected to the driver, and the driver is connected to a preset Profibus-DP bus network.
Optionally, the CAN communication module includes a CAN controller, a second photoelectric isolation circuit and a CAN bus transceiver, the CAN controller passes through the second photoelectric isolation circuit and the CAN bus transceiver is connected, and the CAN bus transceiver is connected with a preset CAN bus network.
Optionally, the Modbus TCP communication module includes an ethernet controller, an ethernet physical layer interface chip, and an RJ-45 network interface, where the ethernet controller is connected to the ethernet physical layer interface chip, the ethernet physical layer interface chip is connected to the RJ-45 network interface, and the RJ-45 network interface is connected to a preset Modbus TCP industrial ethernet network.
Optionally, the ZigBee communication module employs a CC2530 chip, the microprocessor module is connected to the CC2530 chip through a preset UART serial port, and the CC2530 chip is connected to a preset ZigBee wireless sensor network.
Optionally, the CAN controller and the ethernet controller are integrated in the microprocessor module.
Optionally, the microprocessor module uses an STM32F407ZGT6 chip.
Optionally, the protocol chip of the Profibus-DP communication module adopts an SPC3 chip.
Optionally, the driver of the Profibus-DP communication module is an RS485 type device.
The application has the following beneficial technical effects:
the wireless gateway device can be directly accessed without destroying the original network structure, can be regarded as a slave node of a backbone network and a master node of an access network, realizes the protection of the original network structure, and integrates a relatively small-scale heterogeneous network into the backbone network; for a Profibus-DP backbone network, a CAN backbone network and a Modbus TCP backbone network, the wireless gateway device serves as a slave station; for the ZigBee wireless sensor network, the wireless gateway device is used as a master station, namely a coordinator of the ZigBee wireless sensor network, and the ZigBee terminal node equipment is wirelessly accessed into the Profibus-DP backbone network, the CAN backbone network and the Modbus TCP backbone network to form a movable hybrid industrial network, so that interconnection of various field bus networks and the ZigBee wireless sensor network is realized, the problem of protocol mismatch among heterogeneous networks is solved, the communication efficiency is improved, and communication conflicts are reduced.
Drawings
FIG. 1 is a schematic block diagram of one embodiment of a multi-Fieldbus protocol compatible industrial wireless gateway device provided by the present invention;
FIG. 2 is a schematic block diagram of another embodiment of a multi-Fieldbus protocol compatible industrial wireless gateway device provided by the present invention;
description of reference numerals: 1. a microprocessor module; 2. a Profibus-DP communication module; 21. a protocol chip; 22. a first photoelectric isolation circuit; 23. a driver; 3. a CAN communication module; 31. a CAN controller; 32. a second photoelectric isolation circuit; 33. a CAN bus transceiver; 4. a Modbus TCP communication module; 41. an Ethernet controller; 42. an Ethernet physical layer interface chip; 43. an RJ-45 network interface; 5. a ZigBee communication module; 6. and a power supply module.
Detailed Description
The present application is described in further detail below with reference to figures 1-2.
The embodiment of the application discloses an industrial wireless gateway device compatible with multiple field bus protocols, and with reference to fig. 1, the device comprises a microprocessor module 1, a Profibus-DP communication module 2, a CAN communication module 3, a Modbus TCP communication module 4 and a ZigBee communication module 5; the microprocessor module 1 is respectively connected with a Profibus-DP communication module 2, a CAN communication module 3, a Modbus TCP communication module 4 and a ZigBee communication module 5.
The Profibus-DP communication module 2 is used for being in communication connection with a preset Profibus-DP bus network and used as a slave node of a Profibus-DP main network; the CAN communication module 3 is used for being in communication connection with a preset CAN bus network and is used as a slave node of a CAN backbone network; the Modbus TCP communication module 4 is used for being in communication connection with a preset Modbus TCP industrial Ethernet and used as a slave node of a Modbus TCP backbone network; the ZigBee communication module 5 is used for being in communication connection with a preset ZigBee wireless sensor network and used as a main node accessed to the ZigBee wireless sensor network; the microprocessor module 1 is used for controlling the Profibus-DP communication module, the CAN communication module, the Modbus TCP communication module and the ZigBee communication module by adopting a preset multi-protocol conversion communication model, and performing protocol conversion on the ZigBee wireless sensor network and various field bus networks.
In this embodiment, the multi-protocol conversion communication model includes a hardware driver layer, a protocol stack layer, and an application layer; the hardware driving layer is used for finishing data sending and data receiving of each communication interface and comprises a Profibus-DP network interface driver, a CAN network interface driver, a Modbus TCP industrial Ethernet interface driver and a ZigBee wireless network interface driver. The protocol stack layer is used for respectively completing message encapsulation and analysis of a Profibus-DP bus, a CAN bus, a Modbus TCP industrial Ethernet and a ZigBee network protocol. The application program layer is used for analyzing the command message, processing the data message and carrying out different responses according to the command message or the data message.
In a specific application example, the multi-protocol conversion communication model adopts a data buffering and command buffering mechanism to establish a unified data buffer area and a read-write command queue, the data buffer area comprises a read buffer area and a write buffer area, the read buffer area caches data of the Zigbee terminal nodes acquired by the wireless gateway device, and the write buffer area caches a write command sent when the backbone network device accesses the wireless gateway device. The read-write command queue is used for providing service for data buffering and comprises a read command queue and a write command queue, the read command queue stores read commands of the Zigbee terminal node equipment which is automatically polled by the wireless gateway device, and the write command queue stores write command information of the backbone network equipment. The write command queue adopts an FIFO mechanism, when a plurality of concurrent backbone network devices write commands to the terminal node device at the same time, the write command queue under the FIFO mechanism is used for sending the write commands to the terminal node device one by one, and therefore the problem of communication conflict generated when two or more backbone network devices access the same ZigBee terminal node device at the same time is avoided.
Referring to fig. 2, the industrial wireless gateway device compatible with multiple fieldbus protocols of this embodiment further includes a power module 6, where the power module 6 is connected to the microprocessor module 1, the Profibus-DP communication module 2, the CAN communication module 3, the Modbus TCP communication module 4, and the ZigBee communication module 5, respectively, to provide a required power supply for the five communication modules.
In this embodiment, the Profibus-DP communication module 2 includes a protocol chip 21, a first optoelectronic isolation circuit 22 and a driver 23, the microprocessor module 1 is connected to the protocol chip 21, the protocol chip 21 is connected to the first optoelectronic isolation circuit 22, the first optoelectronic isolation circuit 22 is connected to the driver 23, and the driver 23 is connected to a predetermined Profibus-DP bus network. In the embodiment, the SPC3 chip is used as the protocol chip, and the RS485 driver is used as the driver. The Profibus-DP communication module, which is a slave of the Profibus-DP network, may communicate with a Profibus-DP network master.
In this embodiment, the CAN communication module 3 includes a CAN controller 31, a second optoelectronic isolation circuit 32 and a CAN bus transceiver 33, the CAN controller 31 is connected to the CAN bus transceiver 33 through the second optoelectronic isolation circuit 32, and the CAN bus transceiver 33 communicates with a CAN interface device on a preset CAN bus network. In the embodiment, the first photoelectric isolation circuit and the second photoelectric isolation circuit adopt photoelectric couplers, such as 4N25 type photoelectric couplers, and in other embodiments, the type of the photoelectric coupler can be replaced according to actual needs.
In this embodiment, the Modbus TCP communication module 4 includes an ethernet controller 41, an ethernet physical layer interface chip 42, and an RJ-45 network interface 43, where the ethernet controller 41 is connected to the ethernet physical layer interface chip 42, the ethernet physical layer interface chip 42 is connected to the RJ-45 network interface 43, and the RJ-45 network interface 43 communicates with a Modbus TCP interface device on a preset Modbus TCP industrial ethernet network. In this embodiment, the ethernet controller supports the Modbus TCP industrial ethernet protocol.
In this embodiment, the ZigBee communication module 5 employs a CC2530 chip and a peripheral circuit thereof, the microprocessor module 1 is connected to the CC2530 chip through a preset UART serial port, and the CC2530 chip is connected to a preset ZigBee wireless sensor network. It should be noted that the ZigBee communication module serves as a coordinator of the ZigBee wireless sensor network, constructs the ZigBee network, and can wirelessly communicate with a ZigBee router node or a terminal node device.
In the present embodiment, the microprocessor module 1 employs an industrial-scale chip STM32F407ZGT6, which helps to improve the processing speed, and the STM32F407ZGT6 chip internally integrates the CAN controller 31 and the ethernet controller 41, so as to simplify the hardware circuit.
The working principle of the industrial wireless network device compatible with the multi-field bus protocol of the embodiment is as follows: the protocol conversion between the ZigBee wireless sensor network and various field buses is realized through a preset multi-protocol conversion communication model by respectively controlling the Profibus-DP communication module, the CAN communication module, the Modbus TCP communication module and the ZigBee communication module by taking the microcontroller module as a core.
The industrial wireless gateway device compatible with the multi-field bus protocol of the embodiment is directly accessed under the condition of not damaging the original network structure, can be regarded as a slave node of a backbone network and a master node of an access network, realizes the protection of the original network structure, and integrates a relatively small-scale heterogeneous network into the backbone network; for a Profibus-DP backbone network, a CAN backbone network, and a Modbus TCP backbone network, the wireless gateway device of this embodiment serves as a slave station, and for a ZigBee wireless sensor network, the wireless gateway device of this embodiment serves as a master station, that is, a coordinator of a ZigBee wireless sensor network. The wireless gateway device of the embodiment CAN enable ZigBee terminal node equipment to be wirelessly accessed into a Profibus-DP trunk network, a CAN trunk network and a Modbus TCP trunk network to form a movable hybrid industrial network, so that interconnection of various field bus networks and ZigBee wireless sensor networks is realized, the problem of protocol mismatch between heterogeneous networks is solved, the improvement of communication efficiency is facilitated, and communication conflicts are reduced.
It should be understood that, the sequence numbers of the steps in the foregoing embodiments do not imply an execution sequence, and the execution sequence of each process should be determined by its function and inherent logic, and should not constitute any limitation to the implementation process of the embodiments of the present invention.
It will be apparent to those skilled in the art that, for convenience and brevity of description, only the above-mentioned division of the functional units and modules is illustrated, and in practical applications, the above-mentioned function distribution may be performed by different functional units and modules according to needs, that is, the internal structure of the apparatus is divided into different functional units or modules to perform all or part of the above-mentioned functions. The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (10)
1. An industrial wireless gateway device compatible with multi-field bus protocols is characterized in that: the device comprises a microprocessor module, a Profibus-DP communication module, a CAN communication module, a Modbus TCP communication module and a ZigBee communication module; the microprocessor module is respectively connected with the Profibus-DP communication module, the CAN communication module, the Modbus TCP communication module and the ZigBee communication module;
the Profibus-DP communication module is used for being in communication connection with a preset Profibus-DP bus network and used as a slave node of a Profibus-DP main network;
the CAN communication module is used for being in communication connection with a preset CAN bus network and used as a slave node of a CAN backbone network;
the Modbus TCP communication module is used for being in communication connection with a preset Modbus TCP industrial Ethernet and used as a slave node of a Modbus TCP main network;
the ZigBee communication module is used for being in communication connection with a preset ZigBee wireless sensor network and used as a main node accessed by the ZigBee wireless sensor network;
the microprocessor module is used for controlling the Profibus-DP communication module, the CAN communication module, the Modbus TCP communication module and the ZigBee communication module by adopting a preset multi-protocol conversion communication model, and carrying out protocol conversion on the ZigBee wireless sensor network and various field bus networks.
2. The multi-fieldbus protocol-compatible industrial wireless gateway device of claim 1, wherein: the device also comprises a power module which is respectively connected with the microprocessor module, the Profibus-DP communication module, the CAN communication module, the Modbus TCP communication module and the ZigBee communication module so as to provide power.
3. The multi-fieldbus protocol-compatible industrial wireless gateway device of claim 1, wherein: the Profibus-DP communication module comprises a protocol chip, a first photoelectric isolation circuit and a driver, the microprocessor module is connected with the protocol chip, the protocol chip is connected with the first photoelectric isolation circuit, the first photoelectric isolation circuit is connected with the driver, and the driver is connected with a preset Profibus-DP bus network.
4. The multi-fieldbus protocol-compatible industrial wireless gateway device of claim 1, wherein: the CAN communication module comprises a CAN controller, a second photoelectric isolation circuit and a CAN bus transceiver, the CAN controller is connected with the CAN bus transceiver through the second photoelectric isolation circuit, and the CAN bus transceiver is connected with a preset CAN bus network.
5. The multi-fieldbus protocol-compatible industrial wireless gateway device of claim 1, wherein: the Modbus TCP communication module comprises an Ethernet controller, an Ethernet physical layer interface chip and an RJ-45 network interface, wherein the Ethernet controller is connected with the Ethernet physical layer interface chip, the Ethernet physical layer interface chip is connected with the RJ-45 network interface, and the RJ-45 network interface is connected with a preset Modbus TCP industrial Ethernet.
6. The multi-fieldbus protocol-compatible industrial wireless gateway device of claim 1, wherein: the ZigBee communication module adopts a CC2530 chip, the microprocessor module is connected with the CC2530 chip through a preset UART serial port, and the CC2530 chip is connected with a preset ZigBee wireless sensor network.
7. The multi-fieldbus protocol-compatible industrial wireless gateway device of claim 4, wherein: the CAN controller and the Ethernet controller are internally integrated in the microprocessor module.
8. The multi-fieldbus protocol-compatible industrial wireless gateway device of claim 7, wherein: the microprocessor module adopts an STM32F407ZGT6 chip.
9. The multi-fieldbus protocol-compatible industrial wireless gateway device of claim 3, wherein: the protocol chip of the Profibus-DP communication module adopts an SPC3 chip.
10. The multi-fieldbus protocol-compatible industrial wireless gateway device of claim 3, wherein: and the driver of the Profibus-DP communication module adopts an RS485 type device.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115022417A (en) * | 2022-04-18 | 2022-09-06 | 徐州工业职业技术学院 | Multi-protocol conversion gateway |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115022417A (en) * | 2022-04-18 | 2022-09-06 | 徐州工业职业技术学院 | Multi-protocol conversion gateway |
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