Autor: iot-de (page 130)

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…

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…

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…

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…

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…

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…

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…

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.…

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…

Introduction to 4g router Based on the embedded Linux system, a wireless 4g router that uses WiFi technology to share 4G bandwidth is designed and implemented. The router supports UMTS/GSM/CDMA and TDD/FDD-LTE network standards, achieving compatibility with various 3G/4G network…