KR950006927Y1 - Line checking circuit for telephone - Google Patents

Line checking circuit for telephone Download PDF

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Publication number
KR950006927Y1
KR950006927Y1 KR2019930005199U KR930005199U KR950006927Y1 KR 950006927 Y1 KR950006927 Y1 KR 950006927Y1 KR 2019930005199 U KR2019930005199 U KR 2019930005199U KR 930005199 U KR930005199 U KR 930005199U KR 950006927 Y1 KR950006927 Y1 KR 950006927Y1
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South Korea
Prior art keywords
terminal
telephone
subscriber line
speaker
line
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KR2019930005199U
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Korean (ko)
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KR940023213U (en
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김정대
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김정대
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Priority to KR2019930005199U priority Critical patent/KR950006927Y1/en
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Publication of KR950006927Y1 publication Critical patent/KR950006927Y1/en

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    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B29/00—Checking or monitoring of signalling or alarm systems; Prevention or correction of operating errors, e.g. preventing unauthorised operation
    • G08B29/02—Monitoring continuously signalling or alarm systems
    • G08B29/06—Monitoring of the line circuits, e.g. signalling of line faults
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B25/00—Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems
    • G08B25/01—Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems characterised by the transmission medium
    • G08B25/08—Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems characterised by the transmission medium using communication transmission lines
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M3/00—Automatic or semi-automatic exchanges
    • H04M3/22—Arrangements for supervision, monitoring or testing
    • H04M3/26—Arrangements for supervision, monitoring or testing with means for applying test signals or for measuring
    • H04M3/28—Automatic routine testing ; Fault testing; Installation testing; Test methods, test equipment or test arrangements therefor
    • H04M3/30—Automatic routine testing ; Fault testing; Installation testing; Test methods, test equipment or test arrangements therefor for subscriber's lines, for the local loop

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Computer Security & Cryptography (AREA)
  • Signal Processing (AREA)
  • Alarm Systems (AREA)

Abstract

내용 없음.No content.

Description

전화선 단락감지회로Telephone line short circuit detection circuit

제1도는 본 고안의 구성회로도.1 is a configuration circuit diagram of the present invention.

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

1 : 계기판 1a : 지시바늘1: instrument panel 1a: indicator needle

2 : 스피커 3 : 앰프2: speaker 3: amplifier

L1, L2: 가입자선 M0: 0점 단자L 1 , L 2 : Subscriber line M 0 : 0 point terminal

M1: 공통단자 M2: 가동단자M 1 : common terminal M 2 : movable terminal

VR : 가변저항 C : 콘덴서VR: Variable resistor C: Capacitor

RL : 릴레이 RS : 릴레이스위치RL: Relay RS: Relay Switch

DC1, DC2: 직류전류 LED : 발광다이오드DC 1 , DC 2 : DC current LED: light emitting diode

I1, I2: 입력단자 O1, O2: 출력단자I 1 , I 2 : Input terminal O 1 , O 2 : Output terminal

본 고안은 전화선 단락 감지회로에 관한 것으로 구체적으로 설명하면 주택이나 건물내에 스피커를 설치하여 전화기와 전화국간의 가입자선이 단락되면 이를 감지하여 스피커에서 경보음이 울리도록 한 것이다.The present invention relates to a telephone line short circuit detection circuit. Specifically, a speaker is installed in a house or a building to detect a short circuit between a telephone line and a telephone station so that an alarm sounds in the speaker.

최근에는 방범용으로 지, 파출소 등에 설치된 경보장치와 주택이나 건물간을 중계선으로 연결하여 방범활동을 하였었다.In recent years, crime prevention activities have been carried out by connecting alarm devices installed in lands, police boxes, etc. to homes and buildings with relay lines.

이때, 그 중계선은 비용을 절감하기 위해서 통상의 전화가입자선에 연결시켜 사용하였는 바 가입자선을 단선시킨 상태에서 건물내부에 침입하면 지, 파출소의 경보장치가 제기능을 발휘하지 못하여 방범방지에 허점을 노출하였다.At this time, the trunk line was connected to a normal telephone subscriber line in order to reduce costs. If the subscriber line is broken in the interior of the building while the subscriber line is disconnected, the alarm device of the police box does not function properly. Was exposed.

본 고안은 이와 같은 문제점을 해결하기 위하여 전화가입자선이 단선되면 건물 내의 스피커에서 경보음이 울리도록 함으로서 건물내에 침입자가 이를 듣고 도망칠 수 있도록 한 것으로 이를 첨부된 도면에 의하여 상세히 설명하면 다음과 같다.In order to solve this problem, the intruder in the building hears and escapes by making an alarm sound from the speaker in the building when the subscriber line is disconnected. .

전화기와 전화국간은 가입자선(L1)(L2)로 연결시킨 것에 있어서 가입자선(L1)은 계기판(1)의 공통단자(M1) 및 스피커(2)의 1번단자와 접속하고 가입자선(L2)는 가변저항(VR)을 거쳐서 계기판(1)의 가동단자(M2)와 접속하고 공통단자(M1)와 가동단자(M2)간에 콘덴서(C)를 병렬연결하며 직류전원 12V(DC1)(DC2)는 앰프(3)의 입력단자(I1)(I2)에 각각 접속하되 그 사이에 발광다이오드(LED) 및 릴레이(RL)를 병렬연결하고 앰프(3)의 출력단자(O2)은 릴레이 스위치(RS)를 거쳐서 계기판(1)의 0점단자(M0)와 접속하고 출력단자(O2)는 스피커(2)의 2번단자에 접속하여 계기판(1)의 공통단자(M1)에서 가동되는 지시바늘(1a)이 0점단자(M0)에 접속될 때 스피커(2)에 직류전원(DC1)(DC2)이 연결되게 한 것이다.The telephone line and the telephone station are connected by the subscriber line L 1 (L 2 ). The subscriber line L 1 is connected to the common terminal M 1 of the instrument panel 1 and the first terminal of the speaker 2. The subscriber line L 2 is connected to the movable terminal M 2 of the instrument panel 1 through the variable resistor VR, and the capacitor C is connected in parallel between the common terminal M 1 and the movable terminal M 2 . DC power supply 12V (DC 1 ) (DC 2 ) is connected to input terminal (I 1 ) (I 2 ) of amplifier (3), respectively, and connects LED and relay (RL) in parallel to each other. The output terminal (O 2 ) of 3 ) is connected to the zero point terminal (M 0 ) of the instrument panel (1) via the relay switch (RS), and the output terminal (O 2 ) is connected to the second terminal of the speaker (2) When directing needle 1a, which is operated at common terminal M 1 of instrument panel 1, is connected to zero-point terminal M 0 , DC power supply DC 1 (DC 2 ) is connected to speaker 2. will be.

도면중 미설명부호 SW는 스위치, "A"는 전화가입자선이 단락될 때 회로가 이를 감지하는 부분.In the figure, reference numeral SW denotes a switch, and "A" denotes a portion where a circuit detects when a subscriber line is shorted.

이와 같이 된 본 고안의 작용상태를 설명하면 다음과 같다.Referring to the working state of the present invention made as follows.

먼저 통상적으로 전화기와 전화국간의 가입자선(L1)(L2)에는 저전류와 약 50V의 전압이 흐르며 전화기의 송수화기를 들게 되면 전압은 약 7V로 떨어지게 되고 가입자선(L1)(L2)가 단락될 때 전압은 0V로 된다.First typically join between the telephone and the telephone company charity (L 1) (L 2) is when the flows the voltage of the low current and about 50V picked up the handset of the telephone voltage is dropped to about 7V subscriber line (L 1) (L 2) When is shorted, the voltage becomes 0V.

이때 본 고안은 구성회로도에서와 같이 가입자선(L1)(L2)와 병렬연결된 계기판(1)은 가입자선(L1)(L2)와 병렬연결된 계기판(1)은 가입자선(L1)(L2)의 전압을 지시바늘(1a)로 표시하여 주고 가입자선(L1)(L2)가 단락되면 지시바늘(1a)이 0점 단자(M0)와 접속되면서 감지회로가 연결된다.At this time, the present invention, as shown in the configuration circuit diagram instrument panel (1) connected in parallel with the subscriber line (L 1 ) (L 2 ) is a subscriber line (L 1 ) connected in parallel with the subscriber line (L 1 ) (L 2 ) subscriber line (L 1) (L 2 ) is indicated by the indicating needle 1a, and when the subscriber line L 1 (L 2 ) is short-circuited, the indicating needle 1a is connected to the zero point terminal M0 and the sensing circuit is connected. .

즉, 가입자선(L1)(L2)가 단락되지 않은 상태에서는 감지회로가 접속되지 않으므로 통화품질에 아무런 영향을 미치지 않는다.That is, since the sensing circuit is not connected in a state in which the subscriber lines L 1 and L 2 are not shorted, there is no influence on the call quality.

그리고 가입자선(L1)(L2)가 단락되면 스피커(2)의 1번단자와 연결된 공통단자(M1)의 지시바늘(1a)이 0점단자(M0)와 접속되어 릴레이스위치(RS)를 거쳐서 앰프(3)의 출력단자(O1)에 연결된다.When the subscriber line L 1 (L 2 ) is short-circuited, the indication needle 1a of the common terminal M 1 connected to the first terminal of the speaker 2 is connected to the zero-point terminal M 0 so that the relay switch ( It is connected to the output terminal O 1 of the amplifier 3 via RS).

이때 직류전원 12V(DC1)(DC2)는 릴레이(RL)를 구동시켜 릴레이스위치(RS)를 연결함과 아울러 앰프(3)의 입력단자(I1)(I2)와 연결되어 있으므로 앰프(3)의 출력단자(O1)는 0점단자(M0)를 거쳐서 프피커(2)에 연결되고 출력단자(O2)는 스피커(2)에 직접 연결되므로 스피커(2)에서 경보음을 발생하게 된다.At this time, the DC power supply 12V (DC 1 ) (DC 2 ) drives the relay (RL) to connect the relay switch (RS) and is connected to the input terminal (I 1 ) (I 2 ) of the amplifier (3). The output terminal (O 1 ) of (3) is connected to the loudspeaker (2) via the zero-point terminal (M 0 ) and the output terminal (O 2 ) is directly connected to the speaker (2). Will occur.

그래서 본 고안의 구성회로를 주택이나 건물내의 전화기와 근접된 위치에 설치한 다음 전화를 사용하고 가입자선(L1)(L2)가 단락될 때 스피커(2)가 울리게 되므로 그 가입자선(L1)(L2)를 지, 파출소 등의 경보장치에 연결하여 사용할 때 침입자가 가입자선을 단락시키더라도 주택이나 건물내의 보조스피커가 울려서 도둑 등의 침입을 방지하게 되는 것이다.Therefore, the circuit of the present invention is installed at a location close to the telephone in a house or building, and then the speaker 2 is ringed when the subscriber line L 1 (L 2 ) is shorted. 1 ) When using (L 2 ) connected to an alarm device such as a ground or police box, even if an intruder shorts the subscriber line, the auxiliary speaker in the house or building will ring to prevent theft.

그리고 가변저항(VR)은 각 가입자간의 전압변동폭을 조절하여 사용할 수 있고 스위치(SW)는 스피커(2)의 경보음을 울리지 않도록 할 때 사용된다.In addition, the variable resistor VR may be used to adjust the voltage fluctuation width between subscribers, and the switch SW is used to prevent the alarm of the speaker 2 from sounding.

또한 콘덴서(C)는 지시바늘(1a)이 급작스럽게 움직이는 것을 방지한다.In addition, the condenser C prevents the instruction needle 1a from moving suddenly.

이와같이 본 고안은 전화기의 통화품질에 영향을 주지 않으면서 가입자선이 단락될 시에만 스피커가 울리게 되므로 전화선의 단락을 쉽게 판별할 수 있을 뿐만 아니라 방범용으로 전화선을 효과적으로 사용할 수 있는 매우 유용한 고안이다.As such, the present invention is a very useful design that can effectively identify the short circuit of the telephone line and effectively use the telephone line for crime prevention because the speaker rings only when the subscriber line is shorted without affecting the call quality of the phone.

Claims (1)

전화기와 전화국간을 가입자선(L1)(L2)로 연결시킨 것에 있어서, 그 가입자선(L1)은 공통단자(M1) 및 스피커(2)와 접속하고 가입자선(L2)는 가동단자(M2)와 접속하며 직류전원(DC1)(DC2)는 앰프(3)의 입력단자(I1)(I2)에 접속하되 그 사이에 릴레이(RL)를 병렬연결하고 앰프(3)의 출력단자(O1)(O2)는 릴레이스위치(RS)를 통한 0점단자(M0) 및 스피커(2)에 각각 접속하여 공통단자(M1)에 연결된 지시바늘(1a)이 0점단자(M0)와 접속되면서 스피커(2)에 전원이 연결됨을 특징으로 한 전화선 단락감지회로.In the connection between the telephone and the telephone station by the subscriber line L 1 (L 2 ), the subscriber line L 1 is connected to the common terminal M 1 and the speaker 2 and the subscriber line L 2 is connected. Connect the movable terminal (M 2 ) and the DC power supply (DC 1 ) (DC 2 ) to the input terminal (I 1 ) (I 2 ) of the amplifier (3), with the relay (RL) connected in parallel and the amplifier The output terminal (O 1 ) (O 2 ) of ( 3 ) is connected to the 0 terminal (M 0 ) and the speaker (2) through the relay switch (RS), respectively, and the indication needle (1a) connected to the common terminal (M 1 ). Telephone line short circuit detection circuit characterized in that the power is connected to the speaker (2) is connected to the zero-point terminal (M 0 ).
KR2019930005199U 1993-03-30 1993-03-30 Line checking circuit for telephone KR950006927Y1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR2019930005199U KR950006927Y1 (en) 1993-03-30 1993-03-30 Line checking circuit for telephone

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR2019930005199U KR950006927Y1 (en) 1993-03-30 1993-03-30 Line checking circuit for telephone

Publications (2)

Publication Number Publication Date
KR940023213U KR940023213U (en) 1994-10-22
KR950006927Y1 true KR950006927Y1 (en) 1995-08-23

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Family Applications (1)

Application Number Title Priority Date Filing Date
KR2019930005199U KR950006927Y1 (en) 1993-03-30 1993-03-30 Line checking circuit for telephone

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Publication number Publication date
KR940023213U (en) 1994-10-22

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