Serial port to Ethernet control device based on STM32

Abstract

The invention relates to a serial port to Ethernet control device based on STM32. The control device comprises: a power supply circuit, a micro-control unit circuit, a JTAG debugging interface circuit, a serial port communication interface circuit and an Ethernet physics interface transceiver control circuit. The power supply circuit comprises: a power supply voltage stabilization chip, a double pin power supply connector, a rectifier diode, a light emitting diode, an inductor, a chip resistor, two tantalum capacitors and four ceramic capacitors. The micro-control unit circuit comprises: a STM32 interconnectivity processor, an expansion pin, a crystal oscillator, two buttons, the three chip resistors and the eleven ceramic capacitors. The Ethernet physics interface transceiver control circuit comprises: an Ethernet physics interface transceiver control chip, an RJ45 interface, an active crystal oscillator, the tantalum capacitor, the sixteen chip resistors and nine ceramic capacitors. The control device has advantages of a small volume, low costs and low power consumption. And telnet can be achieved so as to perform real time operation and monitoring.

Description

technical field [0001] The invention belongs to the field of control technology, and relates to a control device based on STM32 serial port to Ethernet, which is mainly used for connecting RS-232 / 485 / 422 serial ports of sensors, PLCs, controllers, detectors, card readers, etc. The device is connected to the Internet. technical background [0002] With the advent of the Internet of Things era, our country and government have fully realized the importance of the Internet of Things technology revolution. China's Internet industry has developed rapidly in recent years, and it has already established the necessary foundation for the future development of the Internet of Things industry. However, the development status of my country's Internet of Things is still in a state of enlightenment, and the lack of core technology and independent intellectual property rights is one of the key factors restricting the development of my country's Internet of Things. In the prior art...

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Problems solved by technology

However, the development status of my country's Internet of Things is still in a state of enlightenment. The lack of core technology and independent intellectual property rights is one of the key factors restricting the development of my country's Internet of Things.

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