KR940008011Y1 - Metering pulse detecting circuit - Google Patents
Metering pulse detecting circuit Download PDFInfo
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- KR940008011Y1 KR940008011Y1 KR2019890003921U KR890003921U KR940008011Y1 KR 940008011 Y1 KR940008011 Y1 KR 940008011Y1 KR 2019890003921 U KR2019890003921 U KR 2019890003921U KR 890003921 U KR890003921 U KR 890003921U KR 940008011 Y1 KR940008011 Y1 KR 940008011Y1
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M15/00—Arrangements for metering, time-control or time indication ; Metering, charging or billing arrangements for voice wireline or wireless communications, e.g. VoIP
- H04M15/10—Metering calls from calling party, i.e. A-party charged for the communication
- H04M15/12—Discriminative metering, charging or billing
- H04M15/18—Discriminative metering, charging or billing according to duration of the call, or the communication
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M2201/00—Electronic components, circuits, software, systems or apparatus used in telephone systems
- H04M2201/02—Diodes
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M2201/00—Electronic components, circuits, software, systems or apparatus used in telephone systems
- H04M2201/12—Counting circuits
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M2201/00—Electronic components, circuits, software, systems or apparatus used in telephone systems
- H04M2201/18—Comparators
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Dc Digital Transmission (AREA)
Abstract
내용 없음.No content.
Description
제 1 도는 종래의 회로도.1 is a conventional circuit diagram.
제 2 도는 본 고안의 회로도.2 is a circuit diagram of the present invention.
제 3 도는 본 고안의 출력 파형도.3 is an output waveform diagram of the present invention.
* 도면의 주요부분에 대한 부호의 설명* Explanation of symbols for main parts of the drawings
1, 1' : 교환국 2, 2' : 교환국 가압자측 접속 회로1, 1 ': Switchboard 2, 2': Switchboard pressurizer side connection circuit
R1-R7 : 저항 C1-C3 : 콘덴서R1-R7: Resistor C1-C3: Capacitor
D1, D2 : 다이오우드 AMP : 비교기D1, D2: Diode AMP: Comparator
Vr : 출력단자 Vo : 비교기 출력단자Vr: Output Terminal Vo: Comparator Output Terminal
본 고안은 감지 회로에 관한 것으로 특히, 교환국에서 통화 시간과 거리에 따라 요금 등산을 위해 송출하여 주는 계수 신호를 감지하는데 적당하도록 한 회로에 관한 것이다.The present invention relates to a sensing circuit, and more particularly, to a circuit adapted to detect a counting signal transmitted by a switching center for toll charges based on talk time and distance.
종래에는 제 1도와 같이 교환국(1)의 검색시스템(Tip)와 교환국 가입자측 접속회로(2) 사이에 콘덴서(C1)과 저항(R1)을 직렬 연결하고, 이 저항(R1)의 출력단자에 발광다이오우드와 수광트랜지스터로 구성된 광 결합소자(P1)를 연결하고, 이 광결합소자(P1)의 출력단자에 요금 등산 장치(3)를 연결하여 한편 이 발광다이오우드와 병렬로 역방향 다이오우드(D1)를 연결한다.Conventionally, as shown in Fig. 1, a capacitor C1 and a resistor R1 are connected in series between the search system Tip of the switching station 1 and the subscriber station connection circuit 2 of the switching station 1, and are connected to the output terminal of the resistor R1. The optical coupling element P1 composed of the light emitting diode and the light receiving transistor is connected, and the charge climbing device 3 is connected to the output terminal of the optical coupling element P1, and the reverse diode D1 is connected in parallel with the light emitting diode. Connect.
이와 동일하게 교환국(1)의 링(Ring)와 교환국 가입자측 집적회로(2) 사이에 콘덴서(C2), 저항(R2), 광결합소자(P2), 역방향 다이오드(D2)를 요금 등산 장치(3)에 연결하여 구성한다.Similarly, a capacitor C2, a resistor R2, an optical coupling element P2, and a reverse diode D2 are connected between the ring of the switching station 1 and the subscriber station integrated circuit 2, and the charge climbing device ( 3) Connect and configure.
이와같이 구성된 종래 회로의 작용 효과를 살펴보면 계수신호가 교환국(1)의 검색시스템(Tip)으로부터 전송되면 이는 콘덴서(C1)과 저항(R1) 그리고 광결합소자(P1)를 통하여 이 출력신호가 요금 등산장치(3)에 감지되며 이와 동일하게 교환국(2)의 링(Ring)회선으로부터 같은 출력신호가 감지된다.Referring to the effect of the conventional circuit configured as described above, when the counting signal is transmitted from the search system (Tip) of the switching station 1, the output signal is charged through the capacitor (C1), the resistor (R1) and the optical coupling element (P1). The same output signal is detected by the device 3 and similarly from the ring line of the switching center 2.
이와같은 신호를 감지하는데 종래에는 비싼 광결합소자(P1, P2)를 사용하였으며 비싼 광결합소자를 동작시키기 위하여 저항(R1)의 값이 작아야하고 통화중 신호감도의 저하를 야기시키므로 교환국(1)에서 송출되는 계수 신호의 전기적 용량이 커야한다.Existing optical coupling elements P1 and P2 have been conventionally used to detect such a signal. In order to operate an expensive optical coupling element, the value of the resistor R1 should be small and cause a decrease in signal sensitivity during a call. The electrical capacity of the counting signal sent out from should be large.
이러한 문제점을 해결하기 위하여 본 고안은 제 2 도와 같이 교환국(1')의 검색시스템(Tip)의 출력단자와 링(Ring)의 출력단자에 저항(R1, R2)을 각각 연결하고 이 저항(R1, R2)의 출력단자를 연결하여 콘덴서(C1)를 연결하고 이 콘덴서(C1)의 출력단자와 접지 사이에 콘덴서(C2)를 연결하며 이 콘덴서(C1)의 출력단자에 비교기(AMP)의 반전단자(-)를, 이 콘덴서(C2)의 출력단자에 직렬 연결된(R3, R6)을 연결하여 비교기(AMP)의 비반전 단자(+)에 연결하며 한편 정전압(Vcc) 인가단자와 저항(R3)의 출력단자 사이에 저항(R4)을 연결하고 이 저항(R3)의 출력단자와 접지 사이에 저항(R5)를, 그리고 콘덴서(C3)를 연결 구성하고 이 저항(R6)의 출력단자와 비교기(AMP)의 출력단자(Vo) 사이에 저항(R7)을 연결하고 이 정전압(Vcc) 인가단자와 콘덴서(C1)의 출력단자 사이에 역방향 다이오우드(D1)를 이 콘덴서(C1)의 출력 단자와 접지 사이에 역방향 다이오우드(D2)를 연결, 구성한다.In order to solve this problem, the present invention connects the resistors R1 and R2 to the output terminal of the search system Tip of the switching center 1 'and the output terminal of the ring as shown in FIG. , Connect the output terminal of R2) to connect the capacitor (C1), connect the capacitor (C2) between the output terminal of the capacitor (C1) and ground, and invert the comparator (AMP) to the output terminal of the capacitor (C1). Connect the terminal (-) to the non-inverting terminal (+) of the comparator (AMP) by connecting the series (R3, R6) connected in series with the output terminal of this capacitor (C2), while applying the constant voltage (Vcc) terminal and the resistor (R3). Connect a resistor (R4) between the output terminals of), connect a resistor (R5) and a capacitor (C3) between the output terminal of the resistor (R3) and ground, and configure the output terminal and comparator of this resistor (R6). The resistor R7 is connected between the output terminal Vo of the AMP and the reverse diode D1 is connected between the constant voltage Vcc applying terminal and the output terminal of the capacitor C1. ) Is connected between the output terminal of this capacitor (C1) and ground, and the reverse diode (D2).
이와 같이 구성된 본 고안의 작용, 효과를 설명하면, 교환국(1')으로 부터 출력된 같은 검색시스템(Tip)와 링(Ring) 신호의 계수 신호가 저항(R1, R2)을 통하여 콘덴서(C1)에 의하여 직류 성분은 차단이 되고 이 콘덴서(C2)에 의하여 필터링이 되며 이 신호가 비교기(AMP)의 반전단자(-)에 입력이 되고 이 비교기(AMP)의 비반전단자(+)의 기준 전압은 저항(R4, R5), 콘덴서(C3)에 의하여 결정이 되고 이 두 비교기(AMP)의 기준 전위차(Vs-Vr)는 저항(R3)에 의하여 주어진다.Referring to the operation and effect of the present invention configured as described above, the counting signal of the same search system (Tip) and the ring (Ring) signal output from the switching center (1 ') is the capacitor (C1) through the resistor (R1, R2) The DC component is cut off and filtered by the capacitor C2. The signal is input to the inverting terminal (-) of the comparator (AMP) and the reference voltage of the non-inverting terminal (+) of the comparator (AMP). Is determined by the resistors R4 and R5 and the capacitor C3, and the reference potential difference Vs-Vr of these two comparators AMP is given by the resistor R3.
이때의 반전단자(-)의 기준전압(Vr)과 비교기(AMP)의 출력(Vo)의 파형은 제 3 도와 같으며 이 비교기(AMP)의 출력 신호는 요금 등산장치(3)에 연결되어 있어 요금 등산이 감지가 된다.At this time, the waveform of the reference voltage (Vr) of the inverting terminal (-) and the output (Vo) of the comparator (AMP) is the same as the third degree, and the output signal of the comparator (AMP) is connected to the toll climbing device (3). Fee climbing is detected.
따라서, 이는 가격이 비교적 낮으며 교환국(1')의 검색시스템(Tip), 링(Ring) 양단의 저항(R1, R2) 값이 매우 크고 따라서 입력 임피던스가 커지며 교환국(1')의 계수 신호의 신호 레벨의 손실이 없으며 이 궤환용 저항(R7)에 의하여 입력 파형의 신호 레벨을 조정할 수 있고 입력파형에 대한 출력파형의 듀티 사이클을 적당하게 조절할 수 있다.Therefore, the price is relatively low, the values of the resistors R1 and R2 at both ends of the search system Tip and the ring of the switching center 1 'are very large, and thus the input impedance is large and the counting signal of the switching station 1' is increased. There is no loss of signal level, and the feedback resistor R7 allows the signal level of the input waveform to be adjusted and the duty cycle of the output waveform to the input waveform can be adjusted appropriately.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR2019890003921U KR940008011Y1 (en) | 1989-03-31 | 1989-03-31 | Metering pulse detecting circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR2019890003921U KR940008011Y1 (en) | 1989-03-31 | 1989-03-31 | Metering pulse detecting circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| KR900017934U KR900017934U (en) | 1990-10-05 |
| KR940008011Y1 true KR940008011Y1 (en) | 1994-11-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR2019890003921U KR940008011Y1 (en) | 1989-03-31 | 1989-03-31 | Metering pulse detecting circuit |
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| Country | Link |
|---|---|
| KR (1) | KR940008011Y1 (en) |
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1989
- 1989-03-31 KR KR2019890003921U patent/KR940008011Y1/en not_active IP Right Cessation
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| Publication number | Publication date |
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| KR900017934U (en) | 1990-10-05 |
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