JPH0373919B2 - - Google Patents
Info
- Publication number
- JPH0373919B2 JPH0373919B2 JP57103979A JP10397982A JPH0373919B2 JP H0373919 B2 JPH0373919 B2 JP H0373919B2 JP 57103979 A JP57103979 A JP 57103979A JP 10397982 A JP10397982 A JP 10397982A JP H0373919 B2 JPH0373919 B2 JP H0373919B2
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- alternating current
- pole
- fixed pole
- diode
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 230000002265 prevention Effects 0.000 claims description 29
- 238000012544 monitoring process Methods 0.000 claims description 13
- 230000005540 biological transmission Effects 0.000 claims description 9
- 230000008054 signal transmission Effects 0.000 claims description 8
- 230000007274 generation of a signal involved in cell-cell signaling Effects 0.000 claims description 7
- 238000001514 detection method Methods 0.000 claims description 6
- 230000005856 abnormality Effects 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 6
- 230000002159 abnormal effect Effects 0.000 description 4
- 230000008878 coupling Effects 0.000 description 4
- 238000010168 coupling process Methods 0.000 description 4
- 238000005859 coupling reaction Methods 0.000 description 4
- 230000007257 malfunction Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000009760 functional impairment Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Landscapes
- Alarm Systems (AREA)
- Monitoring And Testing Of Transmission In General (AREA)
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、防犯・防災用感知器の電気接点部の
作動状況（正常・異常信号）を遠方にて的確に監
視できるようにした防犯・防災用遠方監視回路に
関する。[Detailed Description of the Invention] [Industrial Application Field] The present invention is a crime prevention/disaster prevention device that enables accurate monitoring of the operating status (normal/abnormal signal) of the electrical contact portion of a crime prevention/disaster prevention sensor from a distance. Concerning a remote monitoring circuit for disaster prevention.
従来の警備システムでは、警報信号伝送用媒体
として直流電圧・電流を使用し、その電圧・電流
の断続もしくは変化量を検出する方法が広く行わ
れている。
In conventional security systems, a method is widely used in which DC voltage and current are used as a medium for transmitting alarm signals, and the intermittent or change amount of the voltage and current is detected.
従来の警備システムにあつては、防犯・防災用
感知器の電気接点が故意または故障によつて短絡
状態になると、防犯・防災用感知器が機能障害を
起すことがあり、この場合には直流的に機能障害
防止対策が講じられてきた。
In conventional security systems, if the electrical contacts of the crime prevention/disaster prevention sensor are short-circuited intentionally or due to a malfunction, the crime/disaster prevention sensor may malfunction. Measures have been taken to prevent functional impairment.
本発明の目的は、警報信号伝送用媒体として、
主として可聴周波帯域の低周波交流電圧・電流を
使用し、その低周波交流電圧・電流の断続を検出
すると共に、特に防犯・防災用感知器の電気接点
が故意または故障によつて短絡状態になり、防
犯・防災用感知器としての機能障害を起した場合
でも、低周波交流の波形の変化を検出して交流的
に機能障害を発見し、被害を的確に防止すること
ができる防犯・防災用遠方監視回路を提供するこ
とにある。 The object of the present invention is to use the following as a medium for transmitting an alarm signal:
It mainly uses low-frequency AC voltage and current in the audio frequency band, and detects discontinuation of the low-frequency AC voltage and current, and also detects when the electrical contacts of crime prevention and disaster prevention sensors are short-circuited intentionally or due to malfunction. , a crime prevention and disaster prevention sensor that can detect changes in the waveform of low-frequency alternating current and detect functional failures in the event of a functional failure, thereby accurately preventing damage. The purpose is to provide a remote monitoring circuit.
本発明は、警備システムに使用する警報信号伝
送路の一端に交流信号発生回路を置いてループ回
路を形成している監視回路であつて、電気接点可
動極、第１の固定極及び第２の固定極を備えたト
ランスフア接点とダイオードとで構成される電気
接点部における交流電流断続用の前記第１の固定
極と電気接点可動極を前記伝送路の一方に直列に
配設するとともに、前記第２の固定極と前記伝送
路の他方間に前記ダイオードを接続し、前記伝送
路の他端に前記交流信号発生回路からの交流信号
の有無並びに正常時の交流信号の波形と前記トラ
ンスフア接点がシヨートして前記ダイオードが作
用した異常時の交流信号の波形の差異を検出する
検出部を設け、防犯・防災用の前記電気接点部の
作動状況を遠方にて監視可能とした防犯・防災用
遠方監視回路である。
The present invention is a monitoring circuit that forms a loop circuit by placing an AC signal generation circuit at one end of an alarm signal transmission path used in a security system, and comprises a movable electric contact pole, a first fixed pole, and a second fixed pole. The first fixed pole and the movable electric contact pole for switching on/off alternating current in an electric contact portion composed of a transfer contact having a fixed pole and a diode are arranged in series on one side of the transmission path, and The diode is connected between the second fixed pole and the other end of the transmission line, and the presence/absence of an AC signal from the AC signal generation circuit at the other end of the transmission line, the waveform of the AC signal during normal operation, and the transfer contact. For crime prevention and disaster prevention, the operating status of the electrical contact section for crime prevention and disaster prevention can be monitored from a distance by providing a detection unit that detects a difference in the waveform of an AC signal when an abnormality occurs when the diode is activated. This is a remote monitoring circuit.
実施例の説明に先立ち、先ず本発明の原理と作
用について説明する。
Before explaining the embodiments, the principle and operation of the present invention will be explained first.
第１図に示すように、防犯・防災用遠方監視回
路、つまり監視ループ回路１に流す電流として交
流電源２の交流を使用する場合、通常は防犯・防
災用センサの電気接点３によつて、その交流電流
を断続することにより、センサの状態を遠方監視
する。 As shown in FIG. 1, when an alternating current from an AC power supply 2 is used as a current to flow through a remote monitoring circuit for crime prevention and disaster prevention, that is, a monitoring loop circuit 1, normally, the electric contact 3 of the crime prevention and disaster prevention sensor By intermittent alternating current, the state of the sensor can be monitored remotely.
この回路によると、前記接点３が何らかの理由
により第２図に示す如くシヨートされた場合には
交流電流断続機能が失われるので、シヨートされ
た接点３′のセンサは警備能力を失うことになる。 According to this circuit, if the contact 3 is shot for some reason as shown in FIG. 2, the alternating current intermittent function is lost, and the sensor of the shot contact 3' loses its security ability.
この発明は、第３図に示す如く、前記接点にト
ランスフア（切替）型式の接点６を使用し、その
電気接点の固定極の一方にダイオード７を直結す
ることによつて、監視ループ回路の電気接点部
（スイツチ）８を構成したものである。尚、９は
従来型のスイツチを示す。この回路の通常の動作
は、従来型の電気接点の動作と全く変りはなく、
ダイオード７を接続しても、交流電流の断続機能
に全く影響はない。また、従来型の電気接点と併
用することもできる。 As shown in FIG. 3, this invention uses a transfer type contact 6 as the contact, and directly connects a diode 7 to one of the fixed poles of the electrical contact, thereby forming a monitoring loop circuit. This constitutes an electrical contact section (switch) 8. Note that 9 indicates a conventional switch. The normal operation of this circuit is no different from that of conventional electrical contacts;
Even if the diode 7 is connected, the alternating current intermittent function is not affected at all. It can also be used in conjunction with conventional electrical contacts.
この第３図の回路において、電気接点が何らか
の理由によつてシヨートされると（第４図）、そ
の接点６′の交流電流を断続する機能は失われる
が、可動極と、ダイオード７に接続された固定極
の機能は完全に残つているので、ダイオード７の
働きによつて交流電流の片側の半サイクルを消失
し（この点に従来における技術と原理的な差があ
る）、監視ループ回路には第５図ａに示す正常時
と異なつた交流電流（第５図ｂ）が流れる。この
発明においては、回路が正常の場合の電流波形ａ
と、接点６′が第４図に見られる如くシヨートし
てダイオード７が作用した場合の電流波形ｂの波
形の差を電子的に検出しようとするものである。 In the circuit of Fig. 3, if the electrical contact is shot for some reason (Fig. 4), the function of connecting the alternating current of the contact 6' will be lost, but the connection between the movable pole and the diode 7 will be lost. Since the function of the fixed pole remains completely, one half cycle of the alternating current is eliminated by the action of diode 7 (this point is fundamentally different from the conventional technology), and the monitoring loop circuit An alternating current (FIG. 5b) that is different from the normal state shown in FIG. 5a flows through. In this invention, the current waveform a when the circuit is normal is
The purpose is to electronically detect the difference between the current waveform b when the contact 6' is shot as shown in FIG. 4 and the diode 7 is activated.
次に、この発明をその好ましい一実施例につい
て図面を参照しながら詳細に説明する。 Next, a preferred embodiment of the present invention will be described in detail with reference to the drawings.
第６図は本発明の基本的構成を示すブロツク構
成図、第７図は第６図の各要素を具体的に示す回
路構成図である。 FIG. 6 is a block configuration diagram showing the basic configuration of the present invention, and FIG. 7 is a circuit configuration diagram specifically showing each element of FIG. 6.
これらの図において、参照番号１１は交流信号
発生回路を示し、この交流信号発生回路１１は、
例えば可聴周波帯域の低周波交流発振器によつて
構成される。１２は警報信号伝送路、１３はトラ
ンスフア接点３６とダーオード２７とで構成され
た電気接点部をそれぞれ示す。このうち、前記ト
ランスフア接点３６は、電気接点可動極２４、第
１の固定極（電気接点ノーマルブレーク固定極）
２５及び第２の固定極（電気接点ノーマルメーク
固定極）２６を備えている。そして、交流電流断
続用の前記第１の固定極２５と電気接点可動極２
４を前記伝送路の一方に直列に配設し、又前記第
２の固定極２６と前記伝送路の他方間に前記ダイ
オード２７を接続してある。１４は前記伝送路の
他端に設けた検出部を示し、この検出部１４は整
流器２９及び時定数回路２１０より構成され、前
記交流信号発生回路１１からの交流信号の有無並
びに正常時の交流信号の波形と前記トランスフア
接点３６がシヨートして前記ダイオード２７が作
用した異常時の交流信号の波形の差異を検出す
る。１５は例えば論理積回路２１１により構成さ
れる論理回路である。尚２２，２８は結合用変成
器を示す。 In these figures, reference number 11 indicates an AC signal generation circuit, and this AC signal generation circuit 11 is as follows:
For example, it is constituted by a low frequency AC oscillator in the audio frequency band. Reference numeral 12 indicates an alarm signal transmission path, and reference numeral 13 indicates an electrical contact section composed of a transfer contact 36 and a diode 27. Among these, the transfer contact 36 includes the electric contact movable pole 24 and the first fixed pole (electric contact normal break fixed pole).
25 and a second fixed pole (electrical contact normal make fixed pole) 26. The first fixed pole 25 for intermittent alternating current and the movable electric contact pole 2
4 are arranged in series on one of the transmission lines, and the diode 27 is connected between the second fixed pole 26 and the other transmission line. Reference numeral 14 indicates a detection unit provided at the other end of the transmission path, and this detection unit 14 is composed of a rectifier 29 and a time constant circuit 210, and detects the presence or absence of an AC signal from the AC signal generation circuit 11 and the AC signal during normal operation. The difference between the waveform of the AC signal and the waveform of the AC signal at the time of an abnormality when the transfer contact 36 is shot and the diode 27 is activated is detected. 15 is a logic circuit constituted by, for example, an AND circuit 211. Note that 22 and 28 indicate coupling transformers.
第７図の実施例において、低周波交流発振回路
１１の発生する低周波交流は、結合用変性器２２
を経て警報信号伝送路１２に送出される。防犯・
防災用感知の電気接点可動極２４が第１の固定極
２５の側に位置する場合は、上下対称波形の低周
波交流は、結合用変成器２８を経て整流器２９に
より整流された後、時定数回路２１０により直流
に変換され、論理積回路２１１の２入力Ａ，Ｂを
論理“１”レベルに高め、警報出力端子２１２に
正常状態を示す論理“１”レベルの出力を得る。 In the embodiment shown in FIG. 7, the low frequency AC generated by the low frequency AC oscillator circuit 11 is
The alarm signal is sent to the alarm signal transmission line 12 via the alarm signal transmission line 12. Crime prevention/
When the electric contact movable pole 24 for disaster prevention sensing is located on the side of the first fixed pole 25, the low frequency alternating current with a vertically symmetrical waveform passes through the coupling transformer 28 and is rectified by the rectifier 29, and then the time constant It is converted into direct current by the circuit 210, increases the two inputs A and B of the AND circuit 211 to the logic "1" level, and obtains a logic "1" level output at the alarm output terminal 212 indicating a normal state.
電気接点可動極２４が第２の固定極２６の側に
位置する場合は、警報信号伝送路１２が遮断状態
になる結果、論理積２１１の２入力は論理“０”
に保たれ、警報出力端子２１２に異常状態を示す
論理“０”レベルの出力を得る。 When the electric contact movable pole 24 is located on the side of the second fixed pole 26, the alarm signal transmission path 12 is cut off, and as a result, the two inputs of the logical product 211 become logic "0".
, and a logic "0" level output indicating an abnormal state is obtained at the alarm output terminal 212.
故意または故障によつて防犯・防災用感知器の
電気接点可動極２４と第１の可動極２５が短絡し
た場合には、警報信号伝送路１２に加えられる低
周波は交流の半サイクル側はダイオード２７によ
つて短絡され、上下非対称波形の状態になり、そ
の波形を整流器２９により整流後、論理積回路２
１１に加えると、１入力は論理“１”レベル、他
の１入力は論理“０”レベルに保たれるので、警
報出力端子２１２に異常状態を示す論理“０”レ
ベルの出力を得る。 If the electric contact movable pole 24 and the first movable pole 25 of the crime prevention/disaster prevention sensor are short-circuited intentionally or due to a malfunction, the low frequency applied to the alarm signal transmission line 12 is connected to the diode on the half-cycle side of the alternating current. 27, the waveform becomes vertically asymmetrical, and after rectifying the waveform by the rectifier 29, the AND circuit 2
11, one input is kept at the logic "1" level and the other input is kept at the logic "0" level, so that an output of the logic "0" level indicating an abnormal state is obtained at the alarm output terminal 212.
本発明は、上述の通り構成され、作用するもの
であり次の効果を奏する。
The present invention is configured and operates as described above, and has the following effects.
交流信号の正常時と異常時の波形の変化を検出
することにより交流的に接点部の機能障害を発見
して被害を的確に防止することができる。 By detecting changes in the waveform of the AC signal when it is normal and when it is abnormal, it is possible to discover functional failures in the AC contacts and prevent damage accurately.
第１図乃至第５図ａ，ｂはこの発明の原理を説
明するための図、第６図はこの発明に係る防犯・
防災用遠方監視回路の基本的構成を示すブロツク
構成図、第７図は第１図に示した一実施例の具体
的な回路構成例を示す図である。
１……監視ループ回路、２……交流電源、３，
３′……センサの電気接点、４……検出回路、６，
６′……トランスフア接点、７……ダイオード、
８……電気接点部、９……従来型のスイツチ、１
１……交流信号発生回路、１２……警報信号伝送
路、１３……電気接点部、１４……検出部、１５
……論理回路、１６……警報出力端子、２２……
結合用変成器、２４……電気接点可動極、２５…
…第１の固定極、２６……第２の固定極、２７…
…ダイオード、２８……結合用変成器、２９……
整流器、３６……トランスフア接点。
1 to 5 a and b are diagrams for explaining the principle of this invention, and FIG. 6 is a diagram for explaining the principle of this invention.
FIG. 7 is a block configuration diagram showing the basic configuration of a remote monitoring circuit for disaster prevention. FIG. 7 is a diagram showing a specific example of the circuit configuration of the embodiment shown in FIG. 1. 1...Monitoring loop circuit, 2...AC power supply, 3,
3'...Electric contact of the sensor, 4...Detection circuit, 6,
6'...transfer contact, 7...diode,
8...Electrical contact section, 9...Conventional switch, 1
DESCRIPTION OF SYMBOLS 1...AC signal generation circuit, 12...Alarm signal transmission line, 13...Electric contact part, 14...Detection part, 15
...Logic circuit, 16...Alarm output terminal, 22...
Coupling transformer, 24...Electric contact movable pole, 25...
...First fixed pole, 26... Second fixed pole, 27...
...Diode, 28...Coupling transformer, 29...
Rectifier, 36...Transfer contact.
Claims (1)
端に交流信号発生回路を置いてループ回路を形成
している監視回路であつて、電気接点可動極、第
１の固定極及び第２の固定極を備えたトランスフ
ア接点とダイオードとで構成される電気接点部に
おける交流電流断続用の前記第１の固定極と電気
接点可動極を前記伝送路の一方に直列に配設する
とともに、前記第２の固定極と前記伝送路の他方
間に前記ダイオードを接続し、前記伝送路の他端
に前記交流信号発生回路からの交流信号の有無並
びに正常時の交流信号の波形と前記トランスフア
接点がシヨートして前記ダイオードが作用した異
常時の交流信号の波形の差異を検出する検出部を
設け、防犯・防災用の前記電気接点部の作動状況
を遠方にて監視可能とした防犯・防災用遠方監視
回路。1 A monitoring circuit that forms a loop circuit by placing an AC signal generation circuit at one end of an alarm signal transmission path used in a security system, which has a movable electric contact pole, a first fixed pole, and a second fixed pole. The first fixed pole and the movable electric contact pole for switching on/off alternating current in the electric contact portion constituted by a transfer contact and a diode are arranged in series on one side of the transmission path, and the second The diode is connected between the fixed pole and the other end of the transmission line, and the presence or absence of an alternating current signal from the alternating current signal generating circuit at the other end of the transmission line, as well as the waveform of the alternating current signal during normal operation and the transfer contact point are determined. A remote monitoring circuit for crime prevention and disaster prevention is provided with a detection unit that detects a difference in the waveform of an AC signal when an abnormality occurs when the diode acts, and the operating status of the electric contact unit for crime prevention and disaster prevention can be monitored from a distance. .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57103979A JPS58222398A (en) | 1982-06-18 | 1982-06-18 | Burglar-proof and disaster prevention remote- monitoring circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57103979A JPS58222398A (en) | 1982-06-18 | 1982-06-18 | Burglar-proof and disaster prevention remote- monitoring circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS58222398A JPS58222398A (en) | 1983-12-24 |
| JPH0373919B2 true JPH0373919B2 (en) | 1991-11-25 |
Family
ID=14368432
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP57103979A Granted JPS58222398A (en) | 1982-06-18 | 1982-06-18 | Burglar-proof and disaster prevention remote- monitoring circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58222398A (en) |
-
1982
- 1982-06-18 JP JP57103979A patent/JPS58222398A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS58222398A (en) | 1983-12-24 |
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