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KR900001795B1 - Mutual Signal Inverter - Google Patents

Mutual Signal Inverter Download PDF

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Publication number
KR900001795B1
KR900001795B1 KR1019860008997A KR860008997A KR900001795B1 KR 900001795 B1 KR900001795 B1 KR 900001795B1 KR 1019860008997 A KR1019860008997 A KR 1019860008997A KR 860008997 A KR860008997 A KR 860008997A KR 900001795 B1 KR900001795 B1 KR 900001795B1
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resistor
terminal
connector
output
operational amplifier
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KR880005763A (en
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박성현
박옥배
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금성반도체 주식회사
이만영 · 하인츠 디터 케루트
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks

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Abstract

내용 없음.No content.

Description

상호신호 변환장치Mutual Signal Inverter

제1도는 본 발명에 따른 상호신호 변환장치를 설치 운용하는 경우의 블록선도이다.1 is a block diagram in the case of installing and operating the mutual signal conversion apparatus according to the present invention.

제2도는 본 발명인 상호신호 변환장치의 상세한 회로 구성도이다.2 is a detailed circuit diagram of the mutual signal converter according to the present invention.

제3도는 본 발명의 각 선로에 주어지는 신호 파형도이다.3 is a signal waveform diagram given to each line of the present invention.

* 도면의 주요부분에 대한 부호의 설명* Explanation of symbols for main parts of the drawings

100 : 송신연산회로부 200 : 수신변환회로부100: transmission operation circuit unit 200: reception conversion circuit unit

300 : 송신변환회로부 400 : 수신연산회로부300: transmission conversion circuit unit 400: reception operation circuit unit

TXD,

Figure kpo00001
: 송신단자 RXD,
Figure kpo00002
: 수신단자TXD,
Figure kpo00001
: Transmit terminal RXD,
Figure kpo00002
: Receive terminal

OP1, OP2: 연산증폭기 PC1, PC2: 포토커플러OP 1 , OP 2 : Operational Amplifier PC 1 , PC 2 : Photocoupler

R1-R8: 저항 C1, C2: 콘덴서R 1 -R 8 : Resistor C 1 , C 2 : Capacitor

본 발명은 신호방식이 서로 다른 기기간의 상호 통신을 가능케 하는 상호신호 변환장치에 관한 것이며, 특히 신호방식이 서로 다른 기기, 예컨대 교환기와 같은 통신기기와 콤퓨터 단말장치를 호환성 있게 연결하여 상호 데이타 전송을 할 수 있도록 해주는 상호신호 변환기에 관한 것이다.The present invention relates to an inter-signal converting apparatus that enables mutual communication between devices having different signaling methods. In particular, the present invention relates to a communication device such as an exchanger and a computer terminal device that is compatible with different signaling methods, thereby enabling mutual data transmission. An inter-signal converter that allows for

최근 정보 산업화 추세에 따라 데이타 통신을 하기 위하여 각종 기기 예를들면 교환기, 컴퓨터등이 사용되고 있으며 이러한 기기의 단말장치를 네트워크화하려는 시도가 늘고 있다.In recent years, according to the information industrialization trend, various devices such as an exchange and a computer are used for data communication, and attempts to network the terminal devices of such devices are increasing.

그런데 대부분의 단말기는 RS-232C방식 또는 20mA전류 루프 방식등 특정 신호방식을 갖추고 있기 때문에 신호방식이 서로 다른 기기나 또는 단말기간의 데이타 전송이 불가능하다는 문제점이 대두되고 있다.However, since most terminals have specific signaling methods such as RS-232C type or 20mA current loop type, data transfer between devices or terminals having different signal types is becoming a problem.

따라서 기존에 사용중이던 단말기와 새로 설치하여 운용하고자 하는 단말기, 그리고 서로 다른 여러 메이커로부터 구입되었기 때문에 서로 상이한 신호 방식을 갖추고 있는 단말기등을 조합해서 네트워크화하고자 할때 신호방식이 동일한 경우에는 상호 데치타 전송이 가능하고 신호방식이 다를 경우에는 상호 데이타 전송이 불가능하므로 이를 극복하기 위해 종래에는 동일한 신호방식의 단말기끼리 연결시키거나 아니면 신호를 변환시켜 주는 복잡한 옵션회로를 부착하는 등의 비효율적인 운용상의 결점이 있었다.Therefore, if you want to network the existing terminal, the terminal you want to install and operate newly, and the terminal with different signaling methods because it was purchased from several different manufacturers, if the signaling method is the same, mutual digital transmission In this case, mutual data transmission is impossible when the signaling methods are different, and in order to overcome this problem, conventionally, inefficient operation defects such as connecting terminals of the same signaling method or attaching a complicated option circuit for converting signals are required. there was.

본 발명의 목적은 이와같은 종래의 문제점을 감안하여 가장 많이 사용되는 RS-232C방식과 20mA전류 루프 방식을 사용하는 통신기기 및 컴퓨터의 단말기간의 상호 데이타 전송이 가능할 수 있도록 해주는 상호신호 변환장치를 제공하는데 있다.The object of the present invention is to provide an inter-signal converting apparatus that enables mutual data transmission between a communication device and a terminal of a computer using the RS-232C method and the 20 mA current loop method, which are used most in view of the conventional problems. It is.

첨부된 도면에 따라 본 발명의 구성 및 동작을 이하에서 설명하기로 한다.The configuration and operation of the present invention according to the accompanying drawings will be described below.

먼저 제1도의 블록선도를 보면 동일한 RS-232C방식을 사용하는 단말기간의 데이타 전송선로(

Figure kpo00003
)는 항상 상호 데이타 전송이 가능하고,
Figure kpo00004
선로 및
Figure kpo00005
선로는 서로 다른 신호방식을 갖는 단말기간의 상호통신이므로 본 발명인 상호 변환장치가 설치 운용되는 구성으로 도시되어 있다.First, in the block diagram of FIG. 1, a data transmission line between terminals using the same RS-232C method (
Figure kpo00003
) Is always mutual data transfer,
Figure kpo00004
Track and
Figure kpo00005
Since the line is the mutual communication between the terminals having different signaling methods, it is shown as a configuration in which the present invention the mutual conversion device is installed and operated.

본 발명의 상세한 구성을 제2도에 따라 설명해 보면 RS-232C방식을 갖는 단말기에 설치된 코넥터(CN1)의 송신단자(

Figure kpo00006
)에 저항(R1)(R2)과 연산증폭기(OP1)로 구성된 송신연산회로부(100)와 이러한 송신연산회로부(100)의 출력단과 20mA전류 루프 방식을 갖는 단말기에 설치된 코넥터(CN2)의 수신단자(RXD
Figure kpo00007
)(RXD
Figure kpo00008
) 및 DC전원 (+12V)에 각각 연결되어 있는 포토커플러(PC1)과 저항(R3)로 구성된 수신변환회로부(200)와, 상기 코넥터의(CN2) 송신단자(TXD
Figure kpo00009
)(TXD
Figure kpo00010
)와 수신연산회로부(400)의 입력단에 각각 연결되어 있는 포토커플러(PC2)와 저항(R4) 및 콘덴서(C1)으로 구성된 송신변환회로부(300)와, 이러한 송신변환회로부(300) 및 상기 코넥터(CN1)의 수신단자(
Figure kpo00011
)에 각각 연결되어 있는 저항(R5)(R6)(R7)(R8), 콘덴서(C2) 및 연산증폭기(OP2)로 구성된 수신연산호로부(400)등 네개의 회로부로 연결 구성되어 있다.Referring to the detailed configuration of the present invention according to Figure 2, the transmission terminal of the connector CN 1 installed in the terminal having the RS-232C system (
Figure kpo00006
) Is installed in the transmission operation circuit unit 100 consisting of a resistor (R 1 ) (R 2 ) and the operational amplifier (OP 1 ) and the output terminal of the transmission operation circuit unit 100 and a terminal having a 20 mA current loop method (CN 2). ) Receiving terminal (RXD)
Figure kpo00007
) (RXD
Figure kpo00008
) And a conversion circuit 200 configured of a photocoupler (PC 1 ) and a resistor (R 3 ) connected to a DC power supply (+ 12V), respectively, and the (CN 2 ) transmission terminal (TXD) of the connector.
Figure kpo00009
) (TXD
Figure kpo00010
And a transmission conversion circuit unit 300 including a photocoupler PC 2 , a resistor R 4 , and a capacitor C 1 connected to the input terminal of the reception operation circuit unit 400, respectively, and the transmission conversion circuit unit 300. And a receiving terminal of the connector CN 1
Figure kpo00011
Four circuit parts including a receiving operation arc unit 400 consisting of a resistor (R 5 ) (R 6 ) (R 7 ) (R 8 ), a capacitor (C 2 ) and an operational amplifier (OP 2 ) connected to The connection is made up.

이상과 같은 구성에 따라 본 발명의 동작 및 작용 효과를 설명하면 다음과 같다.Referring to the operation and effect of the present invention according to the configuration as described above are as follows.

제3도(a)의 파형①과 같이 먼저 제2도의 선로(①)를 통해서 RS-232C방식의 'L'신호(-12V)가 입력되면 이 신호는 저항(R2)을 통해 연산증폭기(OP1)의 입력단자(+)에 부전압(-12V)으로 걸리게 되고, 제3a도의 파형②와 같은 형태로 연산증폭기(OP1)의 출력단자를 통해서 선로(②)상에 부전압이 나타나게 된다.When the 'L' signal (-12V) of the RS-232C method is input through the line (①) of FIG. 2 as shown by the waveform① of FIG. 3 (a), the signal is received through the operational amplifier (R 2 ). and takes as an input terminal (+), negative voltage (-12V) to the OP 1), a negative voltage appears on the line (②) through an output terminal of the form such as the waveform 3a degree ② operational amplifier (OP 1) do.

이때 직류전원(+12V)에 연결된 전류 제한용인 저항(R3)을 거쳐 20mA의 전류가 포토커플러(PC1)의 다이오드부에 흐르게 되며 따라서 트랜지스터부는 ON상태가 되어 선로(③)를 통해 코넥터의 수신단자(RXD

Figure kpo00012
)에 변환된 전류가 흐르게 된다.At this time, 20mA current flows through the diode part of the photocoupler PC 1 through the current limiting resistor R 3 connected to the DC power supply (+ 12V). Receive terminal (RXD
Figure kpo00012
) Converted current flows.

상기한 것과는 반대로 만약 선로(①)에 'H'신호(+12V)가 입력되면 선로(②)상에는 정전압(+12V)에 나타나게 되고 포토커플러(PC1)의 다이오드부에는 전류가 흐르지 않게 되며 따라서 그 트랜지스터부는 OFF상태가 되어 결국 선로(③)에는 전류가 흐르지 않게 되므로 코넥터의 수신단자(RXD

Figure kpo00013
)에는 전류가 흐르지 않게 된다.Contrary to the above, if the 'H' signal (+ 12V) is input to the line (①), it appears at a constant voltage (+ 12V) on the line (②) and no current flows in the diode of the photocoupler PC 1 . Since the transistor section is turned off and no current flows in the line (③), the receiving terminal (RXD) of the connector
Figure kpo00013
), No current flows.

이러한 반복적인 변환신호 파형의 전송형태가 제3도의 (a)에 도시되어 있다.The transmission form of this repetitive converted signal waveform is shown in FIG.

한편 20mA전류 루프 방식의 코넥터(CN2)에서 RS-232C방식의 코넥터(CN1)으로 신호를 전달하는 경우를 보면 먼저 선로(①')에 제3도(b)의 파형①'과 같이 20mA의 전류가 흐르면 포토커플러(PC2)의 다이오드부는 전류가 흐르게 되고 이로 인해서 포토커플러(PC2)의 트랜지스터부는 ON상태가 된다.On the other hand, when the signal is transmitted from the connector of the 20 mA current loop method (CN 2 ) to the connector of the RS-232C method (CN 1 ), firstly, the 20 mA as shown in the waveform ① 'of FIG. When a current flows in, the diode portion of the photocoupler PC 2 flows, and thus the transistor portion of the photocoupler PC 2 is turned on.

따라서 제3b도의 파형②'에 도시된 바와 같이 연산증폭기(OP2)의 입력단자(+)에는 '0'전위가 나타내게 되고 이때 선로(③')에는 제3도(b)의 파형(③')와 같이 부전압(-12V)이 나타나게 된다.Therefore, as shown in the waveform ② 'of FIG. 3b, the potential of the zero is represented at the input terminal (+) of the operational amplifier OP 2 , and at this time, the waveform (③) of FIG. Negative voltage (-12V) appears.

만약 선로(①')에 전류가 흐르지 않으면 포토커플러(PC2)의 트랜지스터부는 OFF상태가 되고 따라TJ 연산증폭기(OP2)의 입력단자(+)에는 정전압(+12V)DL 걸리게 되며 선로(③'')에는 'H'신호(+12V)가 나타나게 된다.If no current flows through the line (① '), the transistor of the photocoupler (PC 2 ) is turned off, and accordingly, the input terminal (+) of the TJ operational amplifier (OP 2 ) is subjected to a constant voltage (+ 12V) DL, and the line (③ '') Shows 'H' signal (+ 12V).

이상과 같은 반복된 변환신호 전송형태가 제3b도에 도시되어 있다.The repeated conversion signal transmission mode as described above is shown in FIG. 3B.

이상에서 상세히 설명한 바와같이 종래에는 RS-232C방식을 사용하는 기기 및 단말기와 20mA전류 루프 방식을 사용하는 단말기 간에서는 상호 호환적인 데이타 전송을 할 수 없었는데 본 발명에 의한 상호 신호 변환장치는 회로구성이 간단하면서도 상호 신호 변환효율이 뛰어나 기기 및 단말기간의 상호 통신을 자유롭게 할 수 있어서 효율적이고 경제적인 윤용효과를 가져다 주는 유용한 발명인 것이다.As described in detail above, in the related art, a device and a terminal using the RS-232C method and a terminal using the 20 mA current loop method cannot mutually transfer data, but the mutual signal conversion device according to the present invention has a circuit configuration. It is a useful invention that provides a simple and efficient mutual signal conversion efficiency and can freely communicate with each other between devices and terminals, resulting in an efficient and economical lubrication effect.

Claims (1)

종래의 RS-232C통신방식을 사용하는 기기와 20mA전류 루프 방식을 사용하는 기기간의 상호통신을 가능하게 하는 상호신호 변환장치에 있어서, RS-232C방식을 갖는 기기에 설치된 코넥터(CN1)의 송신단자(
Figure kpo00014
)에 일단이 접지된 저항(R1)의 타단이 연결되는 동시에 저항(R2)을 통해서는 반전단자가 접지된 연산증폭기(OP1)의 비반전 단자가 연결될 수 있도록 하고, 이 연산증폭기(OP1)의 출력을 포토커플러(PC1)에 연결하며, 이 포토커플러(PC1)의 출력은 20mA전류 루프 방식을 갖는 기기에 설치된 코넥터(CN2)의 수신단자(RXD
Figure kpo00015
)(RXD
Figure kpo00016
)에 연결된 수 있도록 하고, 상기 코넥터의 송신단자(TXD
Figure kpo00017
)(TXD
Figure kpo00018
)에 포토커플러(PC2)가 연결될 수 있도록 하며, 포토커플러(PC2)의 출력을 반전단자가 저항(R6)가 저항(R7) 및 콘덴서(C2)로 분압된 연산증폭기(OP2)의 비반전단자에 저항(R5)를 통해 연결함과 동시에 저항(R4)과 콘덴서(C1)로 분압된 연신증폭기(OP2)의 비반전 단자에 저항(R5)을 통해 연결함과 동시에저항(R4)과 콘덴서(C1)로 분압되게 Vcc에 연결하며, 연산증폭기(OP2)의 출력을 저항(R8)을 통해 Vcc에 연결함과 동시에 상기 코넥터(N1)의 수신단자(
Figure kpo00019
)에 연결될 수 있도록 구성하여, RS-232C방식을 사용하는 기기와 20mA전류 루프 방식을 사용하는 기기 상호간의 통신을 가능하도록 하게 한 것을 특징으로 하는 상호신호 변환장치.In a mutual signal conversion device that enables mutual communication between a device using a conventional RS-232C communication method and a device using a 20 mA current loop method, transmission of a connector CN 1 installed in a device having an RS-232C method. Terminals(
Figure kpo00014
) Is connected to the other end of the grounded resistor (R 1 ) at the same time, and through the resistor (R 2 ) so that the non-inverting terminal of the operational amplifier OP 1 grounded at the inverting terminal can be connected. connect the output of the OP 1) the photo coupler (PC 1), and a photo coupler (PC 1) output and the reception terminals of the connector (CN 2) installed on the machine with a 20mA current loop method (RXD of
Figure kpo00015
) (RXD
Figure kpo00016
) And the transmit terminal (TXD) of the connector
Figure kpo00017
) (TXD
Figure kpo00018
Photocoupler (PC 2 ) can be connected to the output, and the output of the photocoupler (PC 2 ), the inverting terminal (R 6 ) is divided into the resistor (R 7 ) and the capacitor (C 2 ) operational amplifier (OP) 2) through a resistor (R 5) to the non-inverting terminal of the stretched amplifier (OP 2) partial pressure and at the same time connected via a resistor (R 5) to the non-inverting terminal to the resistor (R 4) and a capacitor (C 1) of At the same time, it is connected to Vcc to divide by resistance (R 4 ) and condenser (C 1 ), and the output of operational amplifier (OP 2 ) is connected to Vcc through resistor (R 8 ) and the connector (N 1). ) 'S receiving terminal (
Figure kpo00019
And a communication device configured to enable communication between a device using a RS-232C method and a device using a 20 mA current loop method.
KR1019860008997A 1986-10-25 1986-10-25 Mutual Signal Inverter Expired KR900001795B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019860008997A KR900001795B1 (en) 1986-10-25 1986-10-25 Mutual Signal Inverter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019860008997A KR900001795B1 (en) 1986-10-25 1986-10-25 Mutual Signal Inverter

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KR880005763A KR880005763A (en) 1988-06-30
KR900001795B1 true KR900001795B1 (en) 1990-03-24

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Application Number Title Priority Date Filing Date
KR1019860008997A Expired KR900001795B1 (en) 1986-10-25 1986-10-25 Mutual Signal Inverter

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