As we all know, at first the data was a simple process quantity of analog signal output, and then the instrument interface was RS232 interface, so that point-to-point communication can be realized, but this way cannot realize the networking function, and then the emergence of RS485 solves this problem. Therefore, this article introduces the RS485 interface in detail.

DTU wireless data transmission terminal is a kind of wireless data transmission terminal equipment with strong anti-interference ability, powerful function, convenient use, low operating cost and low cost. It adopts GPRS/4 G/NB-IoT communication technology and makes full use of the existing network. resource. So, what are the benefits of doing this?

The full Chinese name of Narrow Band Internet of Things: Narrow Band Internet of Things is what we call NB-IOT, which is mainly based on LTE technology (3GPP Release 13).

At present, DTU has a wide range of applications in industry. It mainly solves the problem of transparent transmission of data between serial devices and remote servers when there is no network outdoors, such as in the fields of electricity, energy, transportation, water affairs, and agriculture.

Wireless DTU is a wireless communication device that performs two-way transparent transmission through a wireless communication network. Currently, wireless communication networks include GPRS, 4G, NB-IOT, LORA, and WIFI. Each wireless communication method has its advantages and application scenarios. The difference, customers can Choose the best communication method for your own application scena···

When DTU technology is adopted in various fields, the efficiency is greatly improved, and more and more fields begin to have a "favorite" for DTU technology.Players active in the mass market have 3G DTU/4G DTU/GPRS DTU series related products.

NB-IoT DTU and LoRa DTU are responsible for transmitting data. They can see some differences from the naming. One is NB-IoT and the other is LoRa. But what are the more detailed differences?

RTU, the full name of English is Remote Terminal Units, and the full name of Chinese is Remote Terminal Units. It is the basic unit of SCADA system. RTU should have at least the following functions: field signal and industrial equipment monitoring, control and alarm. For example: data acquisition and processing, on-site control, data transmission (network communication), on-site and remote alarms,···

The English name of the gateway: gateway, also known as network connector and protocol converter. A gateway is a facility used to provide network compatibility functions such as protocol conversion, routing selection, and data exchange when intercommunication between networks using different architectures or protocols.

Wi-Fi 联盟宣布未来的 Wi-Fi 6 设备将可以使用 6GHz 频段，并且支持 6GHz 频段的 Wi-Fi 6。为确保行业统一通用术语，该标准将命名为 Wi-Fi 6E，以区别于原本的 Wi-Fi 6 标准。目前 Wi-Fi 6E 还在等待全球监管机构的批准。