Communication network server

Abstract

The invention discloses a communication network server. The communication network server comprises a serial port expansion circuit, an optocoupler isolation circuit and a serial port interface circuit, wherein the optocoupler isolation circuit executes conversion of optoelectronic signals and is configured to be connected to the serial port expansion circuit and the serial port interface circuit separately. The communication network server further comprises a network interface circuit and a microcontroller. The serial port expansion circuit is configured to execute conversion between serial port signals and TTL signals; the microcontroller is configured to be connected to the network interface circuit to receive network data, convert the TTL signals into a network protocol and send the network protocol to the network interface circuit; the microcontroller is configured to be connected to the serial port expansion circuit to receive the TTL signals, convert the network protocol into TTL signals and send the TTL signals to the serial port expansion circuit. By means of the communication network server, serial port interface equipment can be maintained, and accidental damage caused by severe environments such as ground wire loop voltage, surge, indirect lightning strike and static to serial port equipment is avoided.

Description

technical field [0001] The invention relates to the field of communication networks, in particular to a communication network server. Background technique [0002] With the development of Internet of Things technology, more and more bottom-end devices need to be connected to Ethernet to transmit data to the central control room. At the same time, with the rapid development of electronic technology and network communication technology, data collection and transmission are gradually applied in various fields, and penetrate into many aspects such as telecommunications, electric power, and industrial control. Serial communication servers are widely used in traditional attendance systems, card systems, access control systems, POS consumer systems, medical security systems, industrial control, electric power, telecommunications and other fields. A serial port server is connected to sensors, detectors, card readers or other devices to transmit data as an interface. When these dat...

AI Technical Summary

Problems solved by technology

In the responsible environment of the industrial site, the existing serial communication technology and serial communication equipment are susceptible to signal interference, resulting in communication interruption and seriously affecting the service life of the equipment.

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