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

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 standards. After introducing the design

Introduction to rs485 communication module The rs485 communication module developed by Chengdu Zongheng Charge is also known as 4g dtu, 4g module and 4g transmission terminal. This product provides an RS485 interface, which can collect sensor or instrument data through RS485, and transmit the data

Wireless communication modules enable various types of terminal equipment to have the ability to transmit networked information. As the underlying hardware, they are irreplaceable and are a key link in connecting the perception layer and network layer of the Internet of Things. Based on the

DTU DTU is the abbreviation of Data Terminal Unit. Broadly speaking, when communicating, both ends of the link that transmits data. The module units responsible for sending data information are called DTU. Under its function, the format conversion and data collation and verification of the

rtu control system The rtu control system is referred to as rtu, and the Chinese name is: remote telemetry terminal. It is a device that mainly integrates remote control and data transmission. It usually has DI (switch input), DO (switch output), AI (analog input), AO

rtu control system application in oil fields In order to realize single well automation and intelligent drainage and production, an oilfield RTU control was developed with the currently internationally accepted programmable controller PLC as the core and easy to configure on-site automation control, equipped with

This article mainly discusses the wireless data transmission based on microcontroller in the wireless field parameter monitoring system. The system uses Microchip’s PICl6F876 microcontroller as the MCU to control the A/D conversion of industrial instrument data and data wireless reception and transmission; through RS-232 serial

The microcontroller is limited by the storage medium and cannot further process the sent and received data. Therefore, in applications that require further processing of large amounts of data, the powerful data processing capabilities of microcomputers must be used. In this way, reliable data transmission

Wireless data transmission is a very common art in the Internet of Things. Wireless data transmission includes three levels: node collection layer, intermediate transmission layer, and terminal monitoring application layer. The middle transmission layer is responsible for wireless data transmission. Specifically, it receives data from

zigbee? Applications of Zigbee Zigbee is a low-power personal area network protocol based on the IEEE802.15.4 standard. The technology specified under this agreement is a short-range, low-power wireless communication technology. The name comes from the eight-character dance of bees, because bees rely on the “dance”