There are many forms of antennas. To facilitate discussion, the following introduction will classify antennas according to different situations. They are classified according to seven aspects: work nature, use, characteristics, current distribution, wave band, and appearance. Antenna classification 1. Classification according to nature of work

Chips have always been our hot topic and concern. Chips are also a dazzling crown at the top of the world’s technology. Whoever controls the chip can have a say in the technology world, because the production of chips involves many technologies, such as semiconductors.

First, what is an IoT chip? We know that there are many types of chips. So what is an IoT chip? First, we need to know what the Internet of Things is. Simply put, a network of interconnected things. Its core is still the Internet,

ZHC2931 is an upgraded version of a multi-functional integrated controller based on Internet of Things technology. Users of the Internet of Things control system implemented through this controller can realize remote monitoring of terminal equipment. Provides 1 serial port (RS485/RS232), 2 DI, 1 DO and

The connotation of the Internet of Things and smart agriculture is combined with the actual situation of agricultural intelligent production to design the smart agricultural Internet of Things architecture, which mainly includes the Internet of Things perception layer, the Internet of Things network layer and

In 2015, 3G networks matured, 4G networks developed rapidly, and 2G network business volume and utilization ratio continued to decline. Global operators began to gradually shut down 2G networks and promote the evolution of LTE module /M2M module formats to 4G to improve spectrum utilization

my country is a major agricultural country, and the advantages of traditional agriculture in the international market mainly rely on abundant natural resources and low labor costs. With the development of high technologies such as the Internet of Things, my country’s traditional agriculture is accelerating

The system uses 4G data transmission module, DHT11 temperature and humidity collection sensor and STM32 microprocessor to design a data collection and transmission system based on 4G transmission module. The data acquisition terminal collects the temperature and humidity in the environment, connects to the RS485

The international standardization organizations IEEE and IETF are working together to develop a highly reliable, low-power wireless communication protocol stack for the Internet of Things that can access the Internet. IEEE is mainly responsible for formulating standards for the physical layer and link layer of

4g dtu transparent transmission module The 4G DTU transparent transmission module developed by Chengdu Zongheng Intelligent Control is a product that supports two-way transparent transmission. Users do not need to care about complex protocols. The product is two-way transparent transmission and only requires simple configuration.

The development of wireless communication technology so far can be basically summarized into five stages. The first stage: early stage of dedicated mobile communications. It was the first to develop a dedicated mobile communication system in the shortwave frequency band. Its most representative application is

4g module dtu overview: Product model: ZHC401C is a 4G wireless data transmission module based on China Mobile, Telecom, and China Unicom networks, providing a two-way transparent transmission channel. Compatible with Modbus RTU/TCP protocol. With “remote control” as the core function and high ease of