CN210327619U - Internet of things gateway and internet of things system - Google Patents
Internet of things gateway and internet of things system Download PDFInfo
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- CN210327619U CN210327619U CN201921692351.8U CN201921692351U CN210327619U CN 210327619 U CN210327619 U CN 210327619U CN 201921692351 U CN201921692351 U CN 201921692351U CN 210327619 U CN210327619 U CN 210327619U
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Abstract
The utility model provides a thing networking gateway and thing networking system, including MCU, field bus interface the control unit, serial ports the control unit, Ethercat interface the control unit, keep apart the unit, loRa interface the control unit and electrical unit, MCU and field bus interface the control unit, serial ports the control unit, Ethercat interface the control unit, keep apart the unit and the electrical unit is connected, keep apart the unit and be connected with loRa interface the control unit electricity. The gateway is directly connected with a PLC master station and other field bus slave stations through two field bus interfaces by using communication cables; the slave stations which have higher signal real-time requirement and shorter distance and are convenient to wire are directly connected through an Ethercat interface by using a communication cable; the slave stations which are not high in signal real-time requirement and inconvenient to wire at a longer distance are connected through a wireless interface, so that the wire arrangement is reduced; the gateway realizes communication in a wireless or wired mode, simplifies the wiring difficulty between the master station and the slave station, and is convenient for troubleshooting communication faults.
Description
Technical Field
The utility model relates to a field bus module field especially relates to a thing networking gateway and thing networking system.
Background
At present, a large number of fieldbus modules are applied to industrial fields, more communication cables need to be connected between a master station and a slave station of the modules, but in some industrial fields, due to the fact that devices are far away from each other, and too many obstacles exist between the devices, wiring difficulty between the slave station devices and the master station devices of the fieldbus is increased. And when a problem occurs in one slave station in the middle of the line, communication faults can occur in some slave stations behind the fault module in the line. With the gradual maturity and development of the internet of things technology, the internet of things technology is also gradually applied to some industrial fields. Therefore, it is an urgent problem to develop an internet of things gateway and an internet of things system.
Disclosure of Invention
The utility model discloses solve above technical problem, provide a thing networking gateway and thing networking system, realize the communication through wireless or wired mode between gateway and the equipment.
In order to solve the technical problem, the utility model discloses a technical scheme is:
the utility model provides a gateway of internet of things, includes MCU, field bus interface control unit, serial ports control unit, Ethercat interface control unit, isolation unit, loRa interface control unit and electrical unit, MCU is connected with field bus interface control unit, serial ports control unit, Ethercat interface control unit, isolation unit and electrical unit electricity respectively, the isolation unit is connected with loRa interface control unit electricity.
Furthermore, the MCU is also electrically connected with an Ethercat communication status indicator lamp, an Ethernet communication status indicator lamp and a power indicator lamp.
Further, the field bus interface control unit is electrically connected with two bus interfaces, the serial port control unit adopts a USB to serial port chip CH340B for the gateway can be directly connected with the PC through the USB, the Ethercat interface control unit is electrically connected with the Ethercat interface, and the LoRa interface control unit is electrically connected with the LoRa interface.
Further, the Ethercat interface control unit includes a main control chip (a TI AM437X series MPU) and two Ethercat dedicated PHY chips (KSZ8081), the AM437X is directly connected to the MCU through a parallel port, the AM437X is electrically connected to the two Ethercat dedicated PHY chips (KSZ8081), the Ethercat dedicated PHY chip is electrically connected to the Ethercat interface, and the Ethercat interface is connected to the Ethercat interface slave station through a network cable for communication. The field bus interface control unit comprises a main control chip (a processor of STM32F4 series of ST) and two special Ethernet PHY chips (BCM5241), the STM32F4 is electrically connected with the two special Ethernet PHY chips, the two special Ethernet PHY chips are electrically connected with a bus interface, the bus interface is connected with a PLC master station and other field bus slave stations through cables for communication, and the LoRa interface is communicated with an external LoRa slave station through an antenna.
Further, the power supply unit includes that 24V changes 5V unit, 5V changes 3.3V unit and 5V changes ISO3.3V unit, 24V changes 5V unit and changes 3.3V unit and 5V respectively with 5V and change ISO3.3V unit electricity and be connected, and 5V changes 3.3V unit and is the MCU power supply, and 5V changes ISO3.3V unit and supplies power for the LoRa interface control unit.
Further, the input voltage of the 24V to 5V unit is 18V-30V, and the general working voltage is 24V.
Furthermore, the MCU is electrically connected with the Ethercat interface control unit, the isolation unit and the serial port control unit through serial ports, and the MCU is electrically connected with the field bus interface control unit through the SPI interface.
Further, the protection level of the gateway of the internet of things is IP 20.
Further, the MCU may be a processor of STM32F4 series, chip ST. The 24V-to-5V unit chip is LM2596, the 5V-to-3.3V unit chip is LT8609, and the 5V-to-ISO3.3V unit chip is ADUM 5000. The isolation unit chip is an ADUM5401 digital isolator. The LoRa interface control unit adopts an SX1272 chip of Semtech company.
The utility model provides an adopt thing networking system of above-mentioned thing networking gateway, includes the thing networking gateway, the thing networking gateway carries out data transmission through serial ports and PC, the thing networking gateway carries out data transmission through net twine and PLC main website and the field bus slave station that two bus interfaces used, the thing networking gateway carries out data transmission through Ethercat net twine and Ethercat slave station, the thing networking gateway carries out data transmission through antenna and wireless slave station module.
The utility model has the advantages and positive effects that: the gateway is directly connected with a PLC master station and other field bus slave stations through two field bus interfaces by using communication cables; the slave stations which have higher signal real-time requirement and shorter distance and are convenient to wire are directly connected through an Ethercat interface by using a communication cable; for some signal instantaneity requirements are not very high, slave stations which are not convenient to wire at a relatively long distance are connected through a wireless (LoRa) interface, so that the wire arrangement is reduced; the gateway can obtain some data parameters or perform some parameter configuration on the gateway by connecting a serial port with a PC; the gateway is responsible for converting data received by the Ethercat interface and the LoRa wireless interface and then performing data interaction with the PLC through the Ethernet interface; the gateway realizes communication in a wireless or wired mode, simplifies the wiring difficulty between the master station and the slave station, and is convenient for troubleshooting communication faults.
Drawings
Fig. 1 is a schematic block diagram of the internet of things gateway of the present invention;
FIG. 2 is a schematic block diagram of the Internet of things system of the present invention;
fig. 3 is a three-dimensional view of the present invention (3-a is a front view, 3-b is a side view, and 3-c is a front view).
In the figure: 1. a bus interface; 2. an Ethercat interface; 3. a LoRa interface; 4. a serial interface; 5. an Ethercat communication status indicator light; 6. setting dial switch for Ethernet address; 7. an Ethernet communication status indicator light; 8. a power indicator light; 9. an external power supply terminal.
Detailed Description
The following detailed description of the embodiments of the present invention will be made with reference to the accompanying drawings.
As shown in figure 1, the gateway of the Internet of things comprises an MCU, a field bus interface control unit, a serial port control unit, an Ethercat interface control unit, an isolation unit, a LoRa interface control unit and a power supply unit, wherein the MCU is electrically connected with the field bus interface control unit, the serial port control unit, the Ethercat interface control unit, the isolation unit and the power supply unit respectively, and the isolation unit is electrically connected with the LoRa interface control unit. And the MCU is also electrically connected with an Ethercat communication state indicator lamp, an Ethernet communication state indicator lamp and a power indicator lamp. The MCU is electrically connected with the Ethercat interface control unit, the isolation unit and the serial port control unit through a serial port, and the MCU is electrically connected with the field bus interface control unit through the SPI interface. Fieldbus interface control unit is connected with two bus interface electricity, serial ports control unit adopts a USB to change serial port chip CH340B for the gateway can directly be connected through the USB with the PC, Ethercat interface control unit is connected with Ethercat interface electricity, loRa interface control unit is connected with loRa interface electricity, and the loRa interface passes through the antenna and communicates with outside loRa slave station. The protection level of the gateway of the Internet of things is IP 20.
The power supply unit includes that 24V changes 5V unit, 5V changes 3.3V unit and 5V changes ISO3.3V units, 24V changes 5V unit and changes 3.3V unit and 5V respectively with 5V and change ISO3.3V unit electricity and be connected, and 5V changes 3.3V unit and is the MCU power supply, and 5V changes ISO3.3V unit and supplies power for LoRa interface control unit. The input voltage of the 24V to 5V unit is 18V-30V, and the general working voltage is 24V.
The MCU may be a processor of the STM32F4 series, chip ST. The 24V-to-5V unit chip is LM2596, the 5V-to-3.3V unit chip is LT8609, and the 5V-to-ISO3.3V unit chip is ADUM 5000. The isolation unit chip is an ADUM5401 digital isolator. The LoRa interface control unit adopts an SX1272 chip of Semtech company. The Ethercat interface control unit adopts a TI AM437X series MPU and two Ethercat special PHY chips (KSZ 8081). AM437X and MCU through the direct connection of parallel port, AM437X with two ether cat special PHY chips (KSZ8081) electricity connect, ether cat special PHY chip with ether cat interface electricity connect, ether cat interface carries out the connection communication with ether cat interface slave station through the net twine. The field bus interface control unit adopts a processor and two Ethernet special PHY chips (BCM5241) of STM32F4 series of ST, STM32F4 is electrically connected with the two Ethernet special PHY chips (BCM5241), the two Ethernet special PHY chips are electrically connected with a bus interface, and the bus interface is connected and communicated with a PLC master station and other field bus slave stations through cables.
As shown in fig. 2, an adopt thing networking system of above-mentioned thing networking gateway, including thing networking gateway, thing networking gateway carries out data transmission through serial ports and PC, thing networking gateway is connected the communication through private network line and PLC main website and other field bus slave stations that two bus interfaces used, thing networking gateway passes through the Ethercat private network line and is connected with the Ethercat slave station and carries out the communication, thing networking gateway passes through the antenna and carries out the communication with wireless slave station module. The slave station modules supported by the Ethercat master station interface comprise common Ethercat slave station modules with the same blessings as EP1XXX, EP2XXX, EP23XX, EP3XXX and EP4 XXX. LoRa slave station modules supported by the LoRa master station interface comprise GXWL-AI1AO1-0091, GXWL20-DIO8AI4R and the like.
The gateway of the Internet of things is a series of products, and supported bus types include PROFINET, EtherNET/IP, MODBUS-TCP and PROFIBUS.
When the PROFINET bus protocol is selected: the connectable PLC host comprises all PLC main stations with PROFINET interfaces on the market, such as S7-1500, S7-300 and the like; can be connected with the slave station of PROFINET on the market.
When the PROFIBUS bus protocol is selected: the connectable PLC host machines comprise almost all PLC master stations with PROFIBUS interfaces on the market, such as S7-1500, S7-300 and the like; can be connected with the slave station of PROFIBUS on the market.
When an EtherNET/IP bus protocol is selected: the connectable PLC host machines comprise almost all PLC main stations with EtherNET/IP interfaces on the market of manufacturers such as AB, ohm dragon and the like; can be connected with the EtherNET/IP slave station on the market.
The product is provided with two field bus interfaces (which can be selectively matched to PROFIBUS, PROFINET, MODBUS-TCP and EtherNET/IP), one wireless LoRa interface, one Ethercat main station interface, one serial port and protection level IP 20. The working process of the product is as follows: firstly, after the module is electrified to work, the slave stations contained below the interfaces are scanned through the LoRa interface and the Ethercat interface, networking operation is completed, and after networking is completed, the MCU converts information collected by the LoRa interface and the Ethercat interface into an Ethernet protocol and uploads the information to the PLC through the Ethernet field bus interface. Meanwhile, slave stations carried by the interfaces can be configured or information of the slave stations connected with the interfaces can be obtained through serial ports.
The embodiments of the present invention have been described in detail, but the description is only for the preferred embodiments of the present invention and should not be construed as limiting the scope of the invention. All equivalent changes and modifications made within the scope of the present invention should be covered by the present patent.
Claims (10)
1. An internet of things gateway, characterized in that: including MCU, field bus interface control unit, serial ports control unit, Ethercat interface control unit, isolation unit, loRa interface control unit and electrical unit, MCU is connected with field bus interface control unit, serial ports control unit, Ethercat interface control unit, isolation unit and electrical unit electricity respectively, the isolation unit is connected with loRa interface control unit electricity.
2. The internet of things gateway of claim 1, wherein: and the MCU is also electrically connected with an Ethercat communication state indicator lamp, an Ethernet communication state indicator lamp and a power indicator lamp.
3. The internet of things gateway of claim 1 or 2, wherein: the field bus interface control unit is electrically connected with two bus interfaces, the serial port control unit adopts a USB-to-serial port chip, the Ethercat interface control unit is electrically connected with the Ethercat interface, and the LoRa interface control unit is electrically connected with the LoRa interface.
4. The internet of things gateway of claim 3, wherein: the Ethercat interface control unit comprises a main control chip and two Ethercat special PHY chips, the main control chip is electrically connected with the two Ethercat special PHY chips, the Ethercat special PHY chips are electrically connected with the Ethercat interface, and the Ethercat interface performs data transmission with the Ethercat interface slave station through a network cable; the field bus interface control unit comprises a main control chip and two Ethernet special PHY chips, the main control chip is electrically connected with the two Ethernet special PHY chips, the Ethernet special PHY chips are electrically connected with the bus interface, the bus interface performs data transmission with the PLC master station and the field bus slave station through cables, and the LoRa interface performs data transmission with the external LoRa slave station through an antenna.
5. The internet of things gateway of claim 1 or 2, wherein: the power supply unit includes that 24V changes 5V unit, 5V changes 3.3V unit and 5V changes ISO3.3V units, 24V changes 5V unit and changes 3.3V unit and 5V respectively with 5V and change ISO3.3V unit electricity and be connected, and 5V changes 3.3V unit and is the MCU power supply, and 5V changes ISO3.3V unit and supplies power for LoRa interface control unit.
6. The gateway of the internet of things of claim 5, wherein: the input voltage of the 24V to 5V unit is 18V-30V, and the general working voltage is 24V.
7. The internet of things gateway of claim 1, wherein: the MCU is electrically connected with the Ethercat interface control unit, the isolation unit and the serial port control unit through a serial port, and the MCU is electrically connected with the field bus interface control unit through the SPI interface.
8. The internet of things gateway of claim 3, wherein: the protection level of the gateway of the Internet of things is IP 20.
9. The gateway of the internet of things of claim 5, wherein: the 24V-to-5V unit chip is LM2596, the 5V-to-3.3V unit chip is LT8609, the 5V-to-ISO3.3V unit chip is ADUM5000, the isolation unit chip is an ADUM5401 digital isolator, and the LoRa interface control unit adopts an SX1272 chip of Semtech corporation.
10. An internet of things system using the internet of things gateway of claim 1, characterized in that: including the thing networking gateway, the thing networking gateway carries out data transmission through serial ports and PC, the thing networking gateway carries out data transmission through net twine and PLC main website and the field bus slave station that two bus interfaces used, the thing networking gateway carries out data transmission through Ethercat net twine and Ethercat slave station, the thing networking gateway carries out data transmission through antenna and wireless slave station module.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921692351.8U CN210327619U (en) | 2019-10-11 | 2019-10-11 | Internet of things gateway and internet of things system |
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| CN201921692351.8U CN210327619U (en) | 2019-10-11 | 2019-10-11 | Internet of things gateway and internet of things system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP4102315A4 (en) * | 2020-07-14 | 2024-03-27 | Ilpum Corp | Device and method for interlinking conventional fieldbus-based automatic control system with iot |
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2019
- 2019-10-11 CN CN201921692351.8U patent/CN210327619U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP4102315A4 (en) * | 2020-07-14 | 2024-03-27 | Ilpum Corp | Device and method for interlinking conventional fieldbus-based automatic control system with iot |
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