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A multiplex RS-422 communication device based on digital IO and a communication terminal

A technology of RS-422 and communication devices, applied in the field of communication terminals, can solve the problems of occupying large serial port resources, RS-232 serial ports cannot realize normal communication, etc., and achieve the effect of cost saving

Inactive Publication Date: 2019-02-19
SHANGHAI SPACEFLIGHT INST OF TT&C & TELECOMM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method needs to occupy a large amount of serial port resources when encountering multi-channel RS-422 communication requirements; at the same time, for non-standard RS-422 communication requirements, the RS-232 serial port of the upper computer cannot achieve normal communication, usually need to add FPGA Embedded software programming implementation of class board

Method used

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  • A multiplex RS-422 communication device based on digital IO and a communication terminal
  • A multiplex RS-422 communication device based on digital IO and a communication terminal
  • A multiplex RS-422 communication device based on digital IO and a communication terminal

Examples

Experimental program
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Embodiment 1

[0036] see figure 1 , in one embodiment, a digital IO-based multi-channel RS-422 communication device and communication terminal, including a number of RS-422 signal conversion modules 2; and a digital IO function board 1, and the digital IO function board 1 The data channel includes a data input channel (not marked in the figure) and a data output channel (not marked in the figure), and the quantity of the data input channel and the quantity of the data output channel are not less than the quantity of the RS-422 signal conversion module 2; wherein , the data input end of each RS-422 signal conversion module 2 is communicably connected to one of the data input channels; the data output end of each RS-422 signal conversion module 2 is communicably connected to one of the data output channels; the digital The IO function board 1 is configured to send the input data collected by the data input channel to the external host computer 3; the digital IO function board 1 is also config...

Embodiment 2

[0060] This embodiment provides a communication terminal, including the digital IO-based multi-channel RS-422 communication device of any one of the above embodiments.

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Abstract

The invention discloses a multiplex RS-422 communication device based on digital IO. The communication device comprises a plurality of RS-422 signal conversion module, and a digital IO function board;The data input end of each RS-422 signal conversion module is communicably connected to one of the data input channels; the data output end of each RS-422 signal conversion module is communicably connected to one of the data output channels. The digital IO function board sends the input data collected by the data input channel to the external host computer. In addition, the digital IO function board can also receive the output data sent by the host computer, and the output data is sent to the data output of the RS-422 signal conversion module via the data output channel. The present inventionalso provides a communication terminal using the communication device of the present invention. The communication device and the communication terminal can simultaneously perform multi-channel RS-422communication, thereby reducing hardware resource consumption and saving design cost.

Description

technical field [0001] The invention belongs to the field of communication terminal design, in particular to a digital IO-based multi-channel RS-422 communication device and a communication terminal using the communication device. Background technique [0002] Communication terminal is a direct tool for people to enjoy different information applications, and it undertakes various tasks such as providing users with a good user interface, completing required business functions, and accessing communication networks. [0003] But at present, when realizing functions such as data interaction and remote control, there are usually one or more RS-422 communication requirements between modules. [0004] In the current technology, the RS-422 signal is generally connected to the RS-232 serial port of the upper computer after level conversion, and the upper computer software calls the serial port resources of the system to realize the communication of the RS-422 signal. This method nee...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F13/40G06F13/42
CPCG06F13/4018G06F13/4286
Inventor 陈樑龙欣于砚孙斯亮汪小丽鲁毅
Owner SHANGHAI SPACEFLIGHT INST OF TT&C & TELECOMM