KR970060729A

KR970060729A - Non-polar current feedback in 2-wire current loop communication

Info

Publication number: KR970060729A
Application number: KR1019960000435A
Authority: KR
Inventors: 이창우
Original assignee: 김광호; 삼성전자 주식회사
Priority date: 1996-01-11
Filing date: 1996-01-11
Publication date: 1997-08-12

Abstract

청구범위에 기재된 발명이 속한 기술분야 : 2선식 전류루프 통신방식에서 전송선을 접속하는 무극성 전류궤환장치.TECHNICAL FIELD The present invention relates to a non-polar current feedback device for connecting transmission lines in a two-wire current loop communication system.

2. 발명이 해결하려고 하는 기술적 과제 : 송신측과 수신측을 연결하는 전송선을 접속할 시에 케이블 색깔로 극성을 구분하여 접속하고 있으나 이는 오접속으로 인한 시스템의 치명적인 손상을 방지하는 근본적인 대책이 없으므로 부품의 파손을 초래하여 정상적인 통신을 수행되지 못한다는 문제점이 있었다.2. Technical Problems to be Solved by the Invention Although a polarity is connected to the transmission line connecting the transmission side and the reception side by the color of the cable, there is no fundamental countermeasure for preventing the system from being seriously damaged due to erroneous connection. So that normal communication can not be performed.

3. 발명의 해결방법의 요지 : 2선식 전류루프 통신방식을 이용한 데이터 전송 장치에서, 수신측으로 공급되는 전류를 제어하는 제1 전류제어회로와, 상기 수신측으로 전송되는 데이터를 제어하는 제1 송신회로와, 상기 수신측으로부터 전송되는 데이타를 수신하는 제1 수신회로로 구성된 송신부와, 송신측으로부터 공급되는 미세한 전류를 검출하여 전송을 제어하는 제2 전류제어회로와, 상기 제2 전류제어회로로부터 전송되는 전류를 데이타로 변환하는 제2 수신회로와 상기 송신측으로부터 요구 데이타를 송신하는 제2 송신회로로 구성된 수신부와, 4개의 고속 스위칭 다이오드(D1-D4)로 구성되며, 상기 수신부와 송신부를 연결하는 전용선에 접속되어 전송되는 데이타의 극성에 상관없이 데이타를 전송하는 브리지부로 구성되는 무극성 전류 궤환장치.3. Summary of the Solution of the Invention In a data transmission apparatus using a two-wire current loop communication method, a first current control circuit for controlling a current supplied to a reception side, a first transmission circuit for controlling data transmitted to the reception side, A second current control circuit for detecting a fine current supplied from the transmission side and controlling the transmission, and a second current control circuit for transmitting And a second transmitting circuit for transmitting request data from the transmitting side, and four high-speed switching diodes (D1-D4). The receiving section is connected to the transmitting section And a bridge for transmitting data regardless of the polarity of data transmitted through the dedicated line.

4. 발명의 중요한 용도 : 2선식 전류루프 통신방식을 이용하는 데이타 전송장치.4. An important use of the invention: a data transmission device using a two-wire current loop communication scheme.

Description

Non-polar current feedback in 2-wire current loop communication

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is a trivial issue, I did not include the contents of the text.

제1도는 본 발명에 따른 블럭 구성도.FIG. 1 is a block diagram of the present invention. FIG.

Claims

A data transmission apparatus using a two-wire current loop communication method, comprising: a first current control circuit for controlling a current supplied to a reception side; a first transmission circuit for controlling data transmitted to the reception side; A second current control circuit for detecting a fine current supplied from the transmission side and controlling transmission; and a second current control circuit for converting the current transferred from the second current control circuit to data And a second transmission circuit configured to transmit request data from the transmission side, and four high-speed switching diodes (D1-D4), wherein the transmission data is transmitted to a dedicated line connecting the reception unit and the transmission unit, And a bridge for transmitting data regardless of the polarity of the polarity of the current.

The differential amplifier circuit according to claim 1, wherein the bridge section is connected to the first current control circuit between the first and second diodes and the first transmission circuit is connected between the third and fourth diodes, And a second current control circuit and a second transmission circuit are connected between the third diode and the second transmission circuit and the second reception circuit are connected between the first and fourth diodes.