Discussion and application of industrial IOT intelligent gateway technology

 

Abstract: The intelligent gateway was proposed to solve the complex problems of IoT diversification and non-uniform complexity standards. The IoT technology that emerged to address these problems solved many problems and enhanced the IoT’s ability to process information and provide services. This article will briefly introduce the application background of the intelligent gateway, and roughly introduce its hardware composition, and conduct an in-depth analysis and introduction of the software technology of the intelligent gateway.

Keywords: IOT; intelligence; smart gateway technology

 

With the development of economy and society, today’s society has put forward higher and higher requirements for the Internet of Things. The application of intelligent gateway technology has always played an important role in the development of Internet of Things technology. As a hub, the intelligent gateway provides us with a broader platform.

 

 

 

 

1.Brief analysis of some application scenarios of intelligent gateway

The introduction of intelligent gateways has greatly improved the competitiveness of intelligent information processing platforms to a certain extent, playing an indispensable role. The application scenarios of intelligent gateways generally include intelligent gateways, information processing platforms, information perception, and gateway application download platforms. The intelligent gateways will collect and pre-process information, and sometimes automatically generate corresponding strategies. Information perception is the process of collecting data through some perception devices. The corresponding data processing platform generates corresponding execution strategies after processing the data to prepare for the next step of execution and operation.

 

 

 

 

 

2.Introduction to the hardware components of the smart gateway

Smart gateway systems generally need to handle some complex applications, so high-performance processors are indispensable for smart gateway systems. The functions of the gateway can provide different services for users. The processor of the smart gateway has the function of storage, including power module, USB, video encoding, display screen and other parts. The smart gateway also has basic data transmission function. It is connected to the local area network or the Internet, so the smart gateway stores the collected and perceived information and also stores various instructions and commands to be issued. The uplink of the smart gateway is generally connected to the network interface, and the downlink is generally connected to some sensor networks. Of course, collecting information through the serial port is also a method we often use. Nowadays, video monitoring has penetrated into our lives, and the market demand for high-definition video monitoring functions is also increasing. In the Internet of Things, audio and video interaction functions have received a lot of attention and attention. To realize the function of video monitoring, we often use video processing platforms and IP cameras to complete it. Of course, we can also achieve this function by connecting virtual cameras through smart gateways.

 

 

 

 

3.Introduction to the software technology related to intelligent gateway

 

3.1 Briefly describe the functions of OSGi middleware

Generally speaking, intelligent gateway software platforms have many functions. In addition to the basic gateway functions, the OSGi gateway middleware functions are also relatively basic and common. Users often use this middleware to manage and operate some software modules. Users can increase the scope of use of the gateway and facilitate our operations by uploading data fusion modules or changing software modules. As we all know, the three major parts of the Linux system environment, middleware software and middleware platform are the components of the gateway middleware architecture, and they play an important role according to their own functions. During the use process, software loading and unloading, software version updates, etc. all rely on the middleware platform to complete, and the middleware software is mainly used to realize the plug-and-play and dynamic update functions of functional modules. If the received command is a downlink command, we need to make a judgment and then send the data to different ports.

 

3.2 Briefly describe the functions of multi-protocol adaptation

In the process of using the Internet of Things, we need to solve the interoperability problem between different protocols. To solve this problem, we need to set up the corresponding protocol adaptation layer to adapt to the diversity of devices and solve unnecessary troubles. In this process, the message format of different types of perception information will be defined by the XML template, and then the intelligent gateway will uniformly encapsulate the data in the lower standard format. This operation can turn different protocols into the same recognizable messages and instructions. After we start the intelligent gateway, we will initialize it, then listen to the data and determine whether it is uplink data or downlink command, which will be used as the basis for the next action. If the received data is perception data, we can upload this data to the management platform.

 

 

3.3 Introduction and explanation of transmission optimization and scheduling of uplink traffic

We all know that intelligent gateways will transmit large amounts of data. In this case, we need to improve the reliability of transmission appropriately. Based on these requirements, we need to optimize and schedule transmission. Based on the above requirements, the designer also introduced two mechanisms, one is the upload acceleration mechanism, and the other is the transmission scheduling mechanism. The reference of these two mechanisms has greatly improved the reliability and efficiency of data transmission.

 

 

 

 

4 Smart Gateway Product Introduction

 

4.1 Overview

This series of intelligent communication management machines adopts an embedded hardware computer platform with multiple downlink communication interfaces and one or more uplink network interfaces. It is used to collect and aggregate the communication data of all intelligent monitoring/protection devices in a target area and upload them to the main station system in real time to complete energy data collection functions such as remote signaling and remote measurement.

At the same time, this series of intelligent communication management machines supports receiving commands from the superior master station system and forwarding them to the intelligent series units in the target area, completing the remote control of the opening and closing of each switchgear in the plant or station or the parameter setting of the device, realizing remote control and remote adjustment functions, so as to achieve the goal of remote output dispatching commands.

This series of intelligent communication management machines provides rich protocol library support to realize the interconnection of intelligent devices from different secondary equipment suppliers. As a communication interface device between the automation system network and monitoring equipment, this series of intelligent communication management machines realizes three functions: protocol conversion, interface matching, and data conversion.

This series of intelligent communication management machines provides RS485 communication ports, each of which can carry up to 32 instruments and equipment (for low-voltage comprehensive protection, it is recommended that no more than 10 devices be connected to each port); the number of devices carried by each communication port can be determined based on the communication baud rate of the instrument equipment, the length of the communication line and the customer’s requirements for the refresh speed of the communication data.

 

This series of intelligent communication management machines can process access to third-party devices and connect to the upper system in real-time parallel multi-task processing, and support software configuration. Through the special configuration management software, different communication protocols can be selected for different channel mounted devices, and the number and data information of instrument equipment connected to the communication management machine can be changed by changing the configuration file without changing the software program.

 

 

 

Gateway classification and selection

 

Modular communication management machine

The modular communication management machine is a universal intelligent communication management machine. It splits the interface of the traditional management machine into modules that can be assembled and matched. The main module can work independently as a standard intelligent communication management machine. The entire device can collect data from water meters, gas meters, electricity meters, microcomputer protection and other equipment terminals through serial ports, Ethernet, Lora wireless, WiFi wireless and other links. The standard 8-way passive dry contacts can collect switch quantity information such as access control, flooding, and smoke in real time, and can upload alarms, real-time data and other information through wired networks, WiFi networks, 4G networks and other links. The main module can be flexibly expanded with the slave module to add more application scenarios, and it can also provide edge computing and other needs.

 

 

 

 

 

Data collection box

The data collection box is an intelligent data collection box independently developed by Ankerui Electric Co., Ltd., which integrates data collection, data processing, data upload and edge computing. The entire device can collect data from various water, electricity and gas terminal equipment through the RS485 serial port, and upload the data to the server or cloud platform through Ethernet, 4G, optical fiber and other communication methods. It can be widely used in building energy consumption systems, power monitoring, power grid comprehensive energy platform, ubiquitous power Internet of Things and other scenarios.

The data acquisition box adopts modular and centralized design. By integrating various components, it is convenient for users to carry out on-site construction wiring, collect and monitor terminal data, and upload and manage data. This acquisition box has the characteristics of high reliability, strong functions, easy maintenance, and high cost performance.

Network diagram 2

Intelligent monitoring host

The intelligent monitoring host is an intelligent data collection and monitoring host that integrates data collection, data processing, data upload, edge computing and local display. The whole machine can collect data from various water, electricity and gas terminal equipment through the RS485 serial port, and upload the data to the server or cloud platform through Ethernet, 4G and other communication methods. At the same time, a 10.1-inch industrial touch screen can be optionally equipped for local data display. It can be widely used in building energy consumption systems, power monitoring, power grid comprehensive energy platform, ubiquitous power Internet of Things and other scenarios.

 

The intelligent monitoring host adopts modular and centralized design. By integrating various components, it is convenient for users to carry out on-site construction wiring, collect and monitor terminal data, and upload and manage data. This host has the characteristics of high reliability, strong functions, easy maintenance, and high cost performance.

 

 

 

 

 

5 Conclusion

Based on the high requirements for IoT technology, the intelligent gateway system and its technology have also been greatly developed to a certain extent. Through the research on the hardware components and software technology related to the intelligent gateway, we have made great progress in the intelligent gateway technology sector. And through the above analysis and explanation, we can also know that the intelligent gateway is not only a tool for sensing and collecting data, it also has more powerful functions, can process and transmit data, and can automatically generate corresponding execution plans. The powerful functions of the intelligent gateway have greatly increased the scope of use of the Internet of Things, and in terms of improving the flexibility of the Internet of Things, the intelligent gateway has also contributed a lot. With the development of the economy and society, the intelligent gateway will inevitably have a broader development space.

 

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