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Interface circuit capable of configuring full-duplex/half-duplex software

An interface circuit, half-duplex technology, applied in the direction of coupling substation interface circuit, telephone communication, electrical components, etc., can solve the problems of poor reliability, low efficiency, inconvenient operation, etc., to achieve rapid response, improve work efficiency, and simple operation Effect

Active Publication Date: 2010-07-07
中国航空工业第一集团公司第六三一研究所
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, the common RS-422 / RS-485 board circuit needs to complete the full-duplex / half-duplex configuration through the hardware jumper, which is generally manual operation, which is inconvenient to operate, and the reliability and efficiency of the jumper itself are poor and low due to the repeated use of the jumper itself. , so the development of an automatic conversion RS-422 / RS-485 board circuit capable of intelligent control is beneficial to save manpower and improve reliability and work efficiency

Method used

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  • Interface circuit capable of configuring full-duplex/half-duplex software
  • Interface circuit capable of configuring full-duplex/half-duplex software
  • Interface circuit capable of configuring full-duplex/half-duplex software

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Embodiment Construction

[0019] see figure 1 , the present invention is a full-duplex / half-duplex software configurable RS-422 / RS-485 interface circuit, in this circuit, one end of the single-pole single-throw switch K3 is connected to the positive end of the second receiver 4, and the other end Connect the positive end of the second transmitter 2 through the resistor R4; one end of the single-pole single-throw switch K4 is connected to the negative end of the second receiver 4, and the other end is connected to the negative end of the second transmitter 2 through the resistor R5; The switch K1 is respectively connected to the first transmitter 3, the positive terminal of the first receiver 1 and the circuit between the SPST switch K3 and the resistor R4, and the resistor R2 is connected in series between the SPDT switch K1 and the first receiver 1 between the positive terminals; the SPDT switch K2 is respectively connected to the negative terminal of the first transmitter 3, the first receiver 1 and ...

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Abstract

The invention relates to an interface circuit capable of configuring full-duplex / half-duplex software, wherein an automatic control switch replaces a jumper wire in the current universal RS-422 / RS-485 plate circuit, so as to match with the full-duplex / half-duplex software to realize the full-duplex / half-duplex configuration in the RS-422 / RS-485 plate circuit. Therefore, the interface circuit has simple operation, fast response and good reliability, saves the labor, improves the working efficiency and can complete a functional circuit BIT.

Description

technical field [0001] The invention relates to a full-duplex / half-duplex software-configurable interface circuit. Background technique [0002] At present, the common RS-422 / RS-485 board circuit needs to complete the full-duplex / half-duplex configuration through the hardware jumper, which is generally manual operation, which is inconvenient to operate, and the reliability and efficiency of the jumper itself are poor and low due to the repeated use of the jumper itself. Therefore, the development of an RS-422 / RS-485 board circuit capable of intelligent control and automatic conversion is conducive to saving manpower and improving reliability and work efficiency. Contents of the invention [0003] In order to solve the technical problems described in the background art, the present invention provides a full-duplex / half-duplex software-configurable interface circuit, which has a simple structure, is easy to realize, is safe and reliable, and has high working efficiency. [...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04M1/738H04M3/00
Inventor 白洁毛宁喻鸣刘海堂
Owner 中国航空工业第一集团公司第六三一研究所
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