LoRa mainly operates in free frequency bands worldwide (ie unlicensed frequency bands), including 433, 868, 915 MHz, etc. LoRa network is mainly composed of four parts: terminal (built-in LoRa module), gateway (or base station), server and cloud. LoRa application data can be transmitted in both directions.

GPRS DTU adopts high-performance industrial-grade 32-bit communication processor, industrial-grade wireless module and industrial-grade GPS module. It uses embedded real-time operating system as the software support platform. It also provides RS232 and RS485 (or RS422) interfaces, which can be directly connected to the serial port. Equipment to realize data transparent transmission function

Modbus gateway is a network hub communication protocol conversion device of industrial automation system. It connects with smart meters, collects data from the lower meters to the modbus gateway, connects with the computer network, and communicates with the network computer according to the Modbus Tcp protocol.

Modbus is a standard protocol for communication between industrial equipment. It is more commonly used in instruments and meters. Different devices can communicate with each other after complying with the Modbus standard. Modbus originally used serial links, such as RS232 and RS485/422. With the development of the network, the Modbus TCP standard was later introduced. Modbus of the serial link is ···

With the help of edge computing, the intelligence of the Internet of Things can be improved, and the Internet of Things can take root in various vertical industries. So what problem does the edge solve IoT?

"Realizing the Internet of Everything" is the ultimate goal of the Internet of Things. In the 2.0 era of data processing in the Internet of Things era, growing data has given birth to the demand for edge computing. After processing, storing, and applying data on the edge close to the physical object, edge computing not only solves the problem of data transmission between devices and the cloud, but···

ARM has three authorization methods: processor, POP, and architecture authorization.

Wireless communication field: At present, more than 85% of wireless communication equipment adopts ARM technology. ARM has been increasingly consolidating its position in this field with its high performance and low cost.

M2M is machine-to-machine communication usually used for remote monitoring, the main purpose is to use sensor data and transmit it to the network. The main components of the system include sensors, RFID, Wi-Fi or cellular communication links, and autonomous computing software programmed to help network devices interpret data and make decisions.

wireless communication technology is very important for IoT products and solutions. With the growth of wireless applications, there will be more and more various technologies and devices, and more and more rely on wireless communication technology. Today we use this article to take stock of the advantages and disadvantages of the main wireless communication technologies in the Internet of Things a···