Constant voltage protection serial communication server

Abstract

The invention discloses a constant voltage protection serial communication server. The constant voltage protection serial communication server comprises a microprocessor, a redundant power circuit, a constant voltage module, a first network module, a second network module, a serial interface circuit and a serial expansion circuit, wherein the first network module, the second network module and a serial processing circuit are connected with the microprocessor, the serial interface circuit is coupled to the serial expansion circuit, and the redundant power circuit is connected with the microprocessor through the constant voltage module. The constant voltage protection serial communication server overcomes the defects that in the prior art, a serial communication server is liable to signal interference, consequently, communication is interrupted, the service life of equipment is seriously affected, the server cannot work normally due to a power outage and a network outage, and a microprocessor is damaged because the voltage output by a power module is unstable or a voltage value cannot be constant.

Description

technical field [0001] The invention relates to the field of serial port servers, in particular to a constant voltage protection type serial port communication 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 dat...

AI Technical Summary

Problems solved by technology

[0004] In view of the above-mentioned technical problems, the purpose of the present invention is to overcome that the serial port communication server in the prior art is susceptible to signal interference, resulting in communication interruption, seriously affecting the mission life of the equipment, and power failure and network disconnection will make the server unable to work normally, and the power supply The voltage output by the module is unstable or the voltage value cannot be constant, resulting in damage to the microprocessor ground, thus providing a device that can effectively protect the serial interface device during use, avoiding ground loop voltage, surge, induced lightning strike, Accidental damage and damage to serial devices caused by harsh static electricity and other environments

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