First of all, let's introduce the HTTP2.0 transmission protocol. The HTTP2.0 transmission protocol greatly improves the performance of HTTP1.x through binary transmission, multiplexing, Header compression, Server Push and other features. However, due to the HTTP2.0 transmission The protocol is implemented based on the TCP protocol, and the characteristics of TCP itself lead to certain bottlenecks and defects.

In industrial automation control, various concepts such as switch quantity, digital quantity, analog quantity, discrete quantity, and pulse quantity are often encountered, and people are easily confused with these concepts in practical applications. The various concepts are listed as follows

LoRa is a LPWAN communication technology, which is widely used in ultra-long-distance wireless transmission scenarios based on spread spectrum technology.

Since the establishment of the Internet of Things concept in 1998, its development has gradually evolved from sensor networks, to data acquisition, target control, and the wireless communication technology used has also evolved from the initial form of RFID + Internet to various forms of terminal network + Internet.

Sensors have long been ubiquitous, long before the Internet and the Internet of Things (IoT). It is like the human five senses, as an important part of modern information technology, it is the main way and means for human to obtain information in the natural and production fields.