Multi-group serial port data concentrator

Abstract

The invention relates to a multi-group serial port data concentrator comprising a channel input module, a channel output module, a data processing module circuit, a photoelectric isolating module circuit, a power supply isolating module circuit, a serial port expanding module circuit and a level converting module circuit which are sequentially connected, wherein the channel input module comprisesa plurality of groups of data exchanging interface terminals and a protection circuit, and the protection circuit is connected with a first level converting circuit and a data exchanging terminal; the channel output module comprises a plurality of groups of data exchanging interface terminals as well as a transient voltage inhibitor and a protection circuit; the serial port expanding module circuit comprises a chip of a serial port communication protocol, a serial port expanding chip can expand a plurality of serial ports by connecting with the data processing module circuit, each group of serial ports have equal priority levels and all have the function of data interrupt; and the level converting module circuit comprises a level converting circuit for a plurality of serial bus communication protocol signals. The multi-group serial port data concentrator has the function of flexible data concentration and can realize the real-time concentration of 16 groups of RS485 communication protocol data.

Description

technical field [0001] The present invention relates to a data concentrator in the field of industrial measurement, in particular to a data concentrator with 19 groups of serial ports. concentrated. technical background [0002] The measurement process is developing in the direction of complication, high speed and large scale. With the rapid development of computer technology, information technology, network technology and other high and new technologies, the intelligence of instruments whose data is concentrated in the role of measurement and control is getting higher and higher. At the same time, there are more than one kind of data to be concentrated in many occasions, and it is necessary to concentrate multiple data and monitor the collected instruments, and the required concentrator needs to have multiple channels. At present, single-chip microcomputer technology is used in data concentrators to form embedded systems to complete data processing. Due to the limitations ...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a multi-group serial port data concentrator, and adopt a module combination circuit to design a data concentrator with 19 groups of serial port communication functions, so as to change the current existing serial port channels, which require the cooperation of multiple concentrators to complete The problems of high cost, poor reliability and inconvenient maintenance in the later period

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