Mine Serial Port Convert Of Net Port Technology And Its Application System

In this paper, single-chip technology, computer technology, field bus technology, and network technology, completed a RS485 signal under the industrial field, as well as mine detection and acquisition environment developed RJ45 to RS485 serial data of the industrial control network data converters and mining converter.For industrial mining equipment, as well as the characteristics of, respectively, the corresponding development of RS485 to RJ45 adapter, it uses no operating system support for network connectivity, with a support network of serial devices can be stand-alone characteristics. Prepared based on the 89S52 microcontroller interface RS-485 interface to Ethernet conversion process, the system through the LAN or Internet communication with the serial port device. It uses time-multiplexed communication technologies, the use of TCP / IP protocol, Serial Bus RS485 serial bus technology and multi-machine communications technology, the completion of 485 to the network to send and receive signals based on the basic functions, such as an increase of self-protection function. System acquisition in support of 10/100Mbps adaptive fast, half-duplex; support TCP, UDP protocol; support for Server and Client mode; all of the settings can be remotely through computer networks to achieve; At the same time support multi-baud rate transmission, greater choice to the system space.The system uses a W5100 network interface chip, the internal integrated 10/100M Ethernet controller, through the TCP / IP protocol for data transmission, STC89C52 control CPU chip for high-speed, low power consumption characteristics of the entire system is controlled to complete the send and receive signals on the 485 as well as work. Design of a complete guarantee of the wide input voltage regulator output voltage 5V, 3.3V dual power supply circuit, in which the advantages of industrial grade converters to multi-serial connections, respectively, in line with the RS232, 422 and 485 standards, can be multi-serial communication, which also There are high-pressure and anti-lightning protection design of the virtual serial port, on the basis of their industrial cascade / network upgrading port facilities, its own research and development function to achieve its low-power RS485 to RJ45 circuit, equipped with high-performance network switches chips, as well as the common single-chip technology, to design the security power module, the composition of the essential safety requirements in line with a new generation of mining string / network port converter.Papers completed system and the hardware circuit design and production of the actual printed circuit boards, after several experiments and hardware application systems software design, circuits and software produced by the main technical parameters of the system meet the design requirements to meet the industrial prototype and Mine have a special request, with the basic functions of engineering applications.