In the industrial control system, 4G cellular modem is an essential hardware product.The industrial environment is complex and changeable, and there are many field devices, which require high stability, reliability and safety of signal transmission. The use of special technology and structural design and effective electrical design can reduce the production cost, reduce the number of components in the system, and improve the reliability and quality of products.In practical project applications, 4G cellular modem is usually used to collect, process and control information in the industrial field. Through wireless communication, the collected data can be easily transmitted to the monitoring center or other related equipment for analysis and processing.
The development trend of 4G cellular modem is mainly reflected in the following aspects:
(1) The Internet of Things (IoT) technology is developing vigorously and its application fields are expanding;
(2) The 4G cellular modem will be developed in the direction of low power consumption, and the 4G cellular modem with lower power consumption will be more popular;
(3) The 4G cellular modem has an obvious trend of miniaturization, and the smaller the volume, the smaller the power consumption;
(4) Embedded technology has been greatly developed, and embedded 4G cellular modem has been widely used. The Internet of Things will be more widely used in the industrial field.
With the continuous improvement of the Internet of things, 4G cellular modem will show the following trends: first, more and more manufacturers begin to pay attention to the field of industrial wireless communication; Second, wireless local area network (WLAN) communication will become the mainstream direction, and there will be more application scenarios and products in the future. Third, the function of data transmission and control is more powerful; Fourthly, wireless technology is developing rapidly.In particular, the rapid development of 3G networks will bring more demand for wireless modules and promote the upgrading of the corresponding products.
The 4G cellular modem is a data acquisition and processing system used in industrial field devices (such as intelligent instruments, air conditioners, etc.) To control various instruments and devices in industrial processes. It is composed of a core chip and peripheral circuits.Communicate with computer and PLC through communication interface, and connect other field equipment such as air conditioner host, air compressor and water pump through RS485 interface.The 4G cellular modem has been widely used in monitoring automation projects because of its three functions of data acquisition, data transmission and remote control, multiple communication protocols (RS232/RS485/422), abundant peripheral interfaces and multiple expansion interfaces. Mainly used for: automatic control management system of industrial process control system; Environmental monitoring and control system; Industrial field bus communication system;Factory Automation Management Center; As well as remote monitoring and remote diagnosis of large-scale production equipment.
Current status and development trend of 4G cellular modem products at home and abroad
In recent years, the competition between 4G cellular modem manufacturers at home and abroad has become increasingly fierce, and most of the domestic 4G cellular modem manufacturers use traditional analog integrated circuits, but with the development of Internet of Things technology, Internet of Things application technology and industrial automation technology. Foreign 4G cellular modem manufacturers have gradually developed into the field of embedded intelligent control.Therefore, domestic brands have been able to meet the needs of most customers. In the major industrial markets in China, new technologies such as smart sensors and industrial Internet emerge in endlessly. With the growing demand for intelligent 4G cellular modem in the domestic market, the field of intelligent instruments and industrial intelligent network control has also put forward higher requirements for products.Foreign manufacturers have increased their investment in the research and development of advanced chip technology and system integration to further enhance the status of 4G cellular modem in the field of intelligent instruments and industrial control.
With the increasing requirements of the market for the performance, reliability and stability of products, the application fields of 4G cellular modem are constantly expanding, from single analog in the past to digital, analog and mixed signals.Due to the high maturity of 4G cellular modem technology, the wide range of applications, and many new demands in the industrial market, the 4G cellular modem market will have a lot of room for development. According to statistics, the global 4G cellular modem market has grown from $2 billion to more than $13 billion.At present, China's annual sales revenue has reached 1.5 billion yuan (equivalent to about 360 million US dollars), accounting for 4.7% of the global market share, ranking third after the United States and Japan.
The 4G cellular modem is widely used in manufacturing, food industry, mechanical processing industry and other fields, such as intelligent warehousing, logistics and transportation equipment control system, packaging automation equipment control system, automotive parts and production automation equipment control system.It is widely used in the aerospace field: the measurement and control technology is widely used in the aerospace industry, and the use of 4G cellular modem escorts the aerospace industry. It is widely used in the field of petrochemical industry. By collecting and analyzing production data through sensors, it can analyze the quality of products and inspect them, so as to better control their quality and reduce costs.Through various sensors and testing equipment to collect temperature, pressure and other data in the production process, the product is tested and controlled to ensure its quality.
