KR950008668Y1 - Checking circuit for telephone line - Google Patents
Checking circuit for telephone line Download PDFInfo
- Publication number
- KR950008668Y1 KR950008668Y1 KR2019930010358U KR930010358U KR950008668Y1 KR 950008668 Y1 KR950008668 Y1 KR 950008668Y1 KR 2019930010358 U KR2019930010358 U KR 2019930010358U KR 930010358 U KR930010358 U KR 930010358U KR 950008668 Y1 KR950008668 Y1 KR 950008668Y1
- Authority
- KR
- South Korea
- Prior art keywords
- circuit
- speaker
- subscriber line
- transistor
- relay
- Prior art date
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Classifications
-
- 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
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- 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
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- 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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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Computer Security & Cryptography (AREA)
- Signal Processing (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Alarm Systems (AREA)
Abstract
내용 없음.No content.
Description
제1도는 본 고안의 구성 회로도.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 : IC회로 2 : 전압변환회로1: IC circuit 2: Voltage conversion circuit
L1, L2: 가입자선 D1-D4: 다이오드L 1 , L 2 : subscriber line D 1 -D 4 : diode
VR1, VR2: 가변저항 R, R1-R4: 저항VR 1 , VR 2 : Variable resistor R, R1-R 4 : Resistance
DC1, DC2: 직류전원 RL : 릴레이DC 1 , DC 2 : DC Power RL: Relay
SP : 스피커 TR : 트랜지스터SP: Speaker TR: Transistor
C1, C2: 콘센서 LED : 발광다이오드C 1 , C 2 : Conesensor LED: Light Emitting Diode
본 고안은 전화선 단락 감지회로의 개량고안에 관한것으로, 전화기와 전화국간을 연결하는 가입자선에 단락 감지회로를 설치하여 가입자선이 단락되었을대 이를 감지회로에서 감지하여 스피커에서 경보음이 울리도록 함으로서 전화선을 절단한 상태에서 주택이나 건물내에 침입하는 것을 방지케한 것이다.The present invention relates to an improvement of the telephone line short circuit detection circuit. A short circuit detection circuit is installed in the subscriber line connecting the telephone line with the telephone station to detect that the subscriber line is shorted and to make an alarm sound from the speaker. The phone line is cut off to prevent entry into a house or building.
최근에는 방범용으로 지, 파출소등에 설치된 경보장치와 주택이나 건물을 중계선으로 연결하여 방범활동을 하였다.In recent years, crime prevention activities have been made by connecting alarm devices installed in lands, police boxes, etc. to homes and buildings with relay lines.
이때 그 중계선은 비용을 절감하기 위해서 통상의 전화 가입자선에 연결시켜 사용하였는바, 가입자선을 단선시킨 상태에서 건물내부에 침입하면, 지,파출소의 경보장치의 제기능을 발휘하지 못하여 오히려 많은 피해를 입게되는등 방범방지에 허점을 노출하였다.At this time, the relay line was connected to a normal telephone subscriber line in order to reduce costs. If the subscriber line is intruded inside the building while the subscriber line is disconnected, it does not function as an alarm device of the ground and police box. Exposed loopholes to prevent crime.
본 고안은 이와같은 문제점을 해결하기 위하여 본원출원인에 의하여 선출된원 실용출원98-5199호의 개량고안에 관한것으로 이를 첨부된 도면에 의하여 상세히 설명하면 다음과 같다.The present invention relates to an improvement plan of the application practical application 98-5199 elected by the present applicant to solve such problems as described in detail by the accompanying drawings as follows.
전화기와 전화국간의 가입자선(L1)(L2)에 접속시킨 브리지 다이오드(D1-D4)에To the bridge diode (D 1 -D 4 ) connected to the subscriber line (L 1 ) (L 2 ) between the telephone and the telephone company
가변저항(VR1)을 거쳐 트랜지스터(TR)의 에미터에 인가됨과 아울러 상기 브리지 다이오드(D1-D4)에서 IC회로(1)의 입력단자(Q13)를 거쳐 출력단자(Q3)에서 반전되어 트랜지스터(TR)의 베이스와 콜렉터를 거쳐서 릴레이(RL)에 인가되며 직류전원(DC1)은 전압변환회로(2)에서 릴레이(RL)를 거쳐서 스피커(SP)에 연결되고 직류전원(DC2)는 트랜지스터(TR)의 에미터 및 스피커(SP)에 인가하여서 된 것이다.It is applied to the emitter of the transistor TR via the variable resistor VR 1 and inverted at the output terminal Q3 via the input terminal Q13 of the IC circuit 1 in the bridge diodes D 1 -D 4 . Is applied to the relay RL via the base and the collector of the transistor TR, and the DC power supply DC 1 is connected to the speaker SP through the relay RL in the voltage conversion circuit 2 and is connected to the DC power supply DC 2. ) Is applied to the emitter and the speaker SP of the transistor TR.
그리고 저항(R1-R4)는 IC보호회로이고 콘덴서(C1)(C2)는 갑작스런 전압변동 방지 콘덴서이다.The resistors R 1 -R 4 are IC protection circuits and the capacitors C 1 (C 2 ) are sudden voltage fluctuation preventing capacitors.
이와같이된 본 고안의 작용상태를 설명하면 다음과 같다.Referring to the working state of the present invention as described above is as follows.
통상적으로 전화기와 전화구간의 가압자선(L1)(L2)에는 저전류 및 약 50V의 전압이 흐르며 전화기의 송수화기를 들었을때는 약 7V로 떨어진 상태로 흐르고 가입자선(L1)(L2)가 단락되었을때만 전압은 0으로 된다.Typically, the pressurized magnetic lines (L 1 ) (L 2 ) between the telephone and the telephone section have a low current and a voltage of about 50 V. When the handset of the telephone is lifted, it flows at about 7 V and the subscriber line (L 1 ) (L 2 ) Only when is shorted, the voltage becomes zero.
이때 본 고안의 제1도에서와 같은 구성회로도가 가입자선(L1)(L2)에 연결된 상태에서 가입자선에 전원이 흐르게되면 그 전원은 전원 변동을 방지하는 브리지 다이오드(D1-D4)를 거쳐서 트랜지스터(TR)의 에미터 및 IC회로(1)의 입력단자(Q13)에 인가되고 IC회로(1)의 입력단자(Q13)에 인가된 전원은 출력단자(Q3)에서 반전되므로 전원이 흐르지 않게된다.At this time, when power flows to the subscriber line while the configuration circuit diagram as in FIG. 1 of the present invention is connected to the subscriber line (L 1 ) (L 2 ), the power supply is a bridge diode (D 1 -D 4) to prevent power fluctuations. Since the power applied to the emitter of the transistor TR and the input terminal Q13 of the IC circuit 1 and applied to the input terminal Q13 of the IC circuit 1 is inverted at the output terminal Q3 through It will not flow.
그래서 출력단자(Q3)와 연결된 트랜지스터(TR)의 베이스는 오프되어 릴레이(RL)의 작동이 이루어지지 않게 된다.Thus, the base of the transistor TR connected to the output terminal Q3 is turned off so that the relay RL is not operated.
즉, 릴레이(RL)가 작동되지 않을때는 스피커(SP)의 전원이 차단되는바 이는 가입자선에 전원이 흐를때는 스피커(SP)의 경보음은 울리지 않게되는 것이다.That is, when the relay RL is not operated, the power of the speaker SP is cut off. When the power is flowing to the subscriber line, the alarm sound of the speaker SP does not sound.
그러나 가입자선(L1)(L2)가 단락되어 IC회로(1)의 입력단자(Q13)가 0일때는 출력단자(Q3)는 1이됨과 동시에 트랜지스터(TR)를 온시켜 릴레이(RL)에 전원이 공급되므로 릴레이(RL)의 구동에 의해서 직류전원(DC1)(DC2)이 스피커(SP)에 직접 인가되어 스피커(SP)의 경보음을 발생시키게 된다.However, when the subscriber line L 1 (L 2 ) is short-circuited and the input terminal Q13 of the IC circuit 1 is 0, the output terminal Q3 becomes 1 and the transistor TR is turned on to turn on the relay RL. Since the power is supplied to the DC power supply DC 1 (DC 2 ) is directly applied to the speaker (SP) by the drive of the relay RL to generate an alarm sound of the speaker (SP).
한편 가변저항(VR1)은 전화선의 전압변동에 따른 조절기능을 갖는 것이며 저항(R1-R4)는 IC보호기능을 갖고 전압변환회로(2)는 직류전원(DC1)(DC2)의 전압을 변환하여 IC회로(1)에 적정전원을 공급해주는 기능을 갖는 것이다.On the other hand, the variable resistor VR 1 has an adjustment function according to the voltage variation of the telephone line, the resistors R 1- R 4 have an IC protection function, and the voltage conversion circuit 2 has a DC power supply DC 1 (DC 2 ). It has a function of supplying proper power to the IC circuit 1 by converting the voltage of.
이와같이 된 본 고안은 가입자선(L1)(L2)에 전원이 흐르면 단락감지회로와 연결된 스피커(SP)가 동작하지 않고 가입자선(L1)(L2)이 단락되었을때는 스피커(SP)가 즉각적으로 경보음을 발생하여 효과적인 방범이 이루어질뿐만 아니라 구조가 간단하므로 전화기 내부에 내장시킬 수 있는 매우 유용한 고안이다.The present invention thus achieved does not operate the speaker SP connected to the short-circuit detection circuit when power is supplied to the subscriber line L 1 (L 2 ) and the speaker SP when the subscriber line L 1 (L 2 ) is short-circuited. It immediately generates an alarm and effective crime prevention is achieved, as well as its simple structure is a very useful design that can be embedded inside the phone.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR2019930010358U KR950008668Y1 (en) | 1993-06-11 | 1993-06-11 | Checking circuit for telephone line |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR2019930010358U KR950008668Y1 (en) | 1993-06-11 | 1993-06-11 | Checking circuit for telephone line |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| KR950001908U KR950001908U (en) | 1995-01-04 |
| KR950008668Y1 true KR950008668Y1 (en) | 1995-10-12 |
Family
ID=19357035
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR2019930010358U KR950008668Y1 (en) | 1993-06-11 | 1993-06-11 | Checking circuit for telephone line |
Country Status (1)
| Country | Link |
|---|---|
| KR (1) | KR950008668Y1 (en) |
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1993
- 1993-06-11 KR KR2019930010358U patent/KR950008668Y1/en active IP Right Grant
Also Published As
| Publication number | Publication date |
|---|---|
| KR950001908U (en) | 1995-01-04 |
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