twisted-pair gateway control circuit based on FT3120 twisted-pair chip

Abstract

The invention provides a twisted-pair gateway control circuit based on an FT3120 twisted-pair chip. The control circuit comprises a power module, an FT3120 twisted-pair module, a control output circuit and a TCP / IP (Transfer Control Protocol / Internet Protocol) transfer serial port module circuit, wherein the FT3120 twisted-pair module comprises the FT3120 twisted-pair chip, a crystal oscillator circuit, a reset circuit, a data transmitting / receiving circuit and a data transmitting / receiving detection circuit; the control output circuit, the TCP / IP transfer serial port module circuit, the crystal oscillator circuit, the reset circuit, the data transmitting / receiving circuit and the data transmitting / receiving detection circuit are all connected with the FT3120 twisted-pair chip; and the power module is respectively connected with the TCP / IP transfer serial port module circuit and the FT3120 twisted-pair chip. Data can be transmitted to the FT3120 twisted-pair module through the internet, remote data transmission is realized, and the twisted-pair gateway control circuit has the characteristics of high data transmission speed which is higher than that of the traditional RS-485 communication, higher reliability, stronger anti-interference ability and the like.

Description

technical field [0001] The invention relates to the technical field of Internet of Things devices, in particular to a power line gateway control circuit based on a PL3120 power line carrier chip. Background technique [0002] At present, the communication control between the two devices on the market mostly adopts the RS-485 communication protocol. The defects of this communication protocol are: the communication distance is short: the maximum transmission distance of the RS-485 bus is 1.2km; the transmission rate is slow: the RS-485 bus The transmission rate of the 485 bus is 300~9.6kbps; network structure: the RS-485 bus network constitutes a master-slave distributed control system; the network capacity is small: a channel of the RS-485 bus network can connect up to 255 nodes; the communication reliability is low : RS-485 bus network fault tolerance and error detection ability must be set by software; product interchangeability is difficult: RS-485 bus network has no unifi...

AI Technical Summary

Problems solved by technology

[0002] At present, the communication control between the two devices on the market mostly adopts the RS-485 communication protocol. The defects of this communication protocol are: the communication distance is short: the maximum transmission distance of the RS-485 bus is 1.2km; the transmission rate is slow: the RS-485 bus The transmission rate of the 485 bus is 300~9.6kbps; network structure: the RS-485 bus network constitutes a master-slave distributed control system; the network capacity is small: a channel of the RS-485 bus network can connect up to 255 nodes; the communication reliability is low : RS-485 bus network fault tolerance and error detection ability must be set by software; product interchangeability is difficult: RS-485 bus network has no unified communication protocol, the product is difficult to be compatible; network expansion function is poor: the expansion of RS-485 bus network Capability is limited; communication cable requirements are high: RS-485 uses polarized shielded twisted pair wires, therefore, there are many disadvantages in the communication control between existing communication devices; this patent application document introduces a dual- The twisted-pair gateway control circuit of the twisted-wire chip, which can replace the traditional RS-485 communication protocol, enables more stable communication between devices, and the communication is faster, with higher reliability and stronger anti-interference ability, etc.

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