IoT gateway Devices are hardware devices that connect from one network environment to another,Include communication gateways, protocol converters, remote terminal units, etc. That can be used in complex industrial environments,It can be used as a hub between field devices and system platforms in the industrial Internet of Things to realize the interconnection of data.Maximize the value of your data.
As the most basic function of industrial gateway,Sensors, instruments, PLC and other equipment in the industrial field need to be connected through the industrial bus interface (RS485, CAN), wireless interface and network interfaceConnected to the gateway, the gateway can adapt to the communication protocol of the field device, such as Modbus, Siemens S7 protocol, DLT645, CJT188, etc.Reading the data of the equipment and being capable of sending a control command;The gateway can upload the collected data to the system platform through 4G/5G, industrial bus interface, network interface, etc.; Of course,The gateway itself can also have an I/O interface to meet the more complex control needs of the industrial field.
The gateway is like "a translator who is proficient in many languages".Many different languages can be translated into a language that the platform can understand,Nable that field device and the platform to understand what each other is saying and doe.
Data is priceless, and the lack of basic data can even lead to the failure of platform applications, so the internal storage of industrial gateways is very important.The gateway can store the collected data in its own memory, which will not be lost when the power is off, and form a dual backup with the platform.The platform can call historical data at any time.When the 4G/5G base station has problems or is under maintenance, the platform loses contact with the site, and the gateway continues to collect and store information on site.After the reply communication with the platform, the data can be actively uploaded to the platform from the moment of disconnection to ensure the integrity of the basic data of the platform.The platform can fully tap the application of data and bring value to customers.
"Cloud edge collaboration" has become a major trend of the Internet of Things, and the platform will decentralize computing tasks.The industrial gateway is required to have the function of edge computing.
In practical applications, a large number of devices are connected to the platform, and the amount of data concurrency is huge.Bring great pressure to the platform and network (especially 4G/5G tariff); The industrial gateway can process the field data according to the preset data,And upload that processing result to the platform; For some simple linkage control and alarm,Edge computing can also be realized locally through logic programming, which greatly improves the real-time control and alarm.Secondary development is also a kind of edge computing, such as cross-platform development and container APP development.The edge computing of industrial gateway should be an open platform, whether it is a debugging engineer or a development engineer.All of them can realize their own edge computing needs.
The cost of manual on-site maintenance is sometimes higher than the cost of the equipment itself, so remote maintenance is essential.
After the industrial gateway is connected to the public network, the supporting debugging software shall be able to remotely connect to the field gateway through the remote server.Engineers can debug on-site gateways or troubleshoot on-site problems in the office, and solve problems remotely as soon as they are found.And that operation efficiency is greatly improve. To truly achieve the goal of "winning thousands of miles away in the midst of strategizing".
In addition,Industrial gateways should also have the functions of software and hardware security encryption, wireless networking, high-performance chips, 4G routing, firewall and so on.I won't go into details here.
With the rapid development of electronic communication, cloud platform, Internet of Things and other technologies,Great changes and breakthroughs are taking place in the development of urban informatization and industrial control.The city is gradually developing from automation and digitalization to intelligence, and the industrial manufacturing industry is gradually moving towards the industrial 4.0 era.The requirement for terminal sensing equipment has also changed from digitalization to intelligence.
(1) Smart city: Smart city is a big concept, including smart water, smart lamp poles, smart transportation, etc.The Internet of Things system is the core of building a smart city, and the industrial gateway is an indispensable part of the Internet of Things system.
(2) Smart factory: smart factory and automation factory, gateway access to various sensors, PLC and human-machine interface on site.The site information is sent to the central control room platform to feed back the site production information in time.
(3) Energy Internet: Power, gas, petrochemical and other energy-related industries, with equipment scattered all over the country.It needs centralized operation and maintenance, and uses the industrial Internet of Things gateway to collect field instruments, sensors and other equipment, and sends them to the energy platform.
