EP0726552A1 - Circuit for transmission of at least two information signals - Google Patents

Circuit for transmission of at least two information signals Download PDF

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Publication number
EP0726552A1
EP0726552A1 EP96250027A EP96250027A EP0726552A1 EP 0726552 A1 EP0726552 A1 EP 0726552A1 EP 96250027 A EP96250027 A EP 96250027A EP 96250027 A EP96250027 A EP 96250027A EP 0726552 A1 EP0726552 A1 EP 0726552A1
Authority
EP
European Patent Office
Prior art keywords
signal
signals
circuit
relay
transmission
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.)
Granted
Application number
EP96250027A
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German (de)
French (fr)
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EP0726552B1 (en
Inventor
Wolfgang Röhl
Ulrich Baumgärtl
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Siemens AG
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Siemens AG
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Publication date
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Publication of EP0726552A1 publication Critical patent/EP0726552A1/en
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    • GPHYSICS
    • G08SIGNALLING
    • G08BSIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B25/00Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems
    • G08B25/01Alarm 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
    • G08B25/018Sensor coding by detecting magnitude of an electrical parameter, e.g. resistance

Definitions

  • the invention relates to a circuit arrangement for transmitting at least two signal signals from a monitoring device to a spatially distant signal device by means of a signaling line, an acknowledgment relay to be switched over by pressing a button to hold the signal device off being arranged at the location of the signal device.
  • Circuit arrangements of the type mentioned are used, for example, to transmit signal signals for exceeding the limit values of operating variables in electrical systems. It is no problem in itself to transmit any number of message signals via a corresponding number of line pairs and signal devices with acknowledgment relays.
  • the invention is based on the object of making it possible to transmit a plurality of message signals to a common signal device and associated acknowledgment relay with little effort for the signal line.
  • an existing signal can be briefly switched off by an interruption circuit and the acknowledgment relay can thereby be reset to its starting position which switches the signal device on.
  • the signal device is reactivated.
  • This facility enables the notification signal to be transmitted by means of a conventional installation cable, the standardized core colors of which do not allow any assignment.
  • the protective conductor with yellow / green marking in the installation cables must under no circumstances be used to conduct current.
  • Another message can now be transmitted in compliance with these regulations and without the additional laying of a new line in existing systems.
  • a circuit arrangement which serves to transmit two message signals M1 and M2 to a common signal device SG.
  • the message signal M1 can be the limit value of an electrical load Be assigned to the consumer while the alarm signal M2 is triggered when a limit temperature is exceeded.
  • the indicator signals M1 and M2 are shown as blocks in the figure, with the exception of how the indicator signals are derived from the parameters on which they are based.
  • the signal signals M1 and M2 are each assigned a signal relay R1 or R2, through which a signal line SL can be applied to a voltage source U.
  • the signal line SL is shown interrupted to indicate that the signal device SG and the signal relays R1 and R2 are located at spatially distant locations.
  • the changeover contact of which the signal device SG applies to the signal line SL in the idle state. If an acknowledgment button QT is actuated, the acknowledgment relay QR goes into latching and switches off the signal device SG at the same time.
  • Each of the signal signals M1 and M2 is also supplied with an interrupt circuit US, which makes it possible to use the signal device SG for both signal signals M1 and M2. This is done by actuating the interrupt circuit US when one of the signal signals M1 or M2 occurs. The result of this is that when the second signal occurs, the other signal that already exists is briefly switched off by the interruption circuit US, and the acknowledgment relay QR is thereby reset to the starting position. In the exemplary embodiment shown, this is done in that a transistor T controlled by the interruption circuit US is switched on in the common connecting line of both signaling relays R1 and R2. After resetting the acknowledgment relay, the signal device SG responds again and informs the user that there is a further signal. He can then make sure which message it is.
  • the signal line SL only needs to have two live wires, so standard installation cables can be used.
  • existing signaling devices can be converted for additional messages without laying additional lines and installing additional signaling devices.

Abstract

The switching system has a signals from two possible sources (M1,M2) that are used to activate an output loudspeaker (SG). For example, one device can be triggered when the load limit of an electrical unit is exceeded, and the other when a temperature threshold is exceeded. The signals are applied to relays (R1,R2) connecting to a voltage source (U) and a relay (QR) is set to activate the output. Each signal is also coupled to an interrupt circuit (US). In the event that a second alarm signal occurs following generation from the other device then a transistor (T) is switched to reset the output relay followed by reactivation of the alarm.

Description

Die Erfindung betrifft eine Schaltungsanordnung zur Übermittlung von wenigstens zwei Meldesignalen von einem Überwachungsgerät zu einem räumlich entfernten Signalgerät mittels einer Meldeleitung, wobei am Ort des Signalgerätes eine durch Betätigung einer Taste in Selbsthaltung zu überführendes Quittierrelais zur Abschaltung des Signalgerätes angeordnet ist.The invention relates to a circuit arrangement for transmitting at least two signal signals from a monitoring device to a spatially distant signal device by means of a signaling line, an acknowledgment relay to be switched over by pressing a button to hold the signal device off being arranged at the location of the signal device.

Schaltungsanordnungen der genannten Art werden beispielsweise dazu benutzt, in elektrischen Anlagen Meldesignale für die Überschreitung der Grenzwerte von Betriebsgrößen zur übertragen. Dabei bereitet es an sich keine Schwierigkeiten, eine beliebige Anzahl von Meldesignalen über eine entsprechende Anzahl von Leitungspaaren und Signalgeräten mit Quittierrelais zu übertragen. Der Erfindung liegt in diesem Zusammenhang die Aufgabe zugrunde, die Übertragung mehrer Meldesignale zu einem gemeinsamen Signalgerät und zugehörigem Quittierrelais bei geringem Aufwand für die Signalleitung zu ermöglichen.Circuit arrangements of the type mentioned are used, for example, to transmit signal signals for exceeding the limit values of operating variables in electrical systems. It is no problem in itself to transmit any number of message signals via a corresponding number of line pairs and signal devices with acknowledgment relays. In this context, the invention is based on the object of making it possible to transmit a plurality of message signals to a common signal device and associated acknowledgment relay with little effort for the signal line.

Gemäß der Erfindung ist zur Lösung dieser Aufgabe vorgesehen, daß bei Verwendung einer für alle zu übertragenden Meldesignale gemeinsamen zweiadrigen Signalleitung durch ein auftretendes Meldesignal ein bereits bestehendes Meldesignal durch eine Unterbrechungsschaltung kurzzeitig abschaltbar und hierdurch das Quittierrelais in seine das Signalgerät einschaltende Ausgangsstellung zurückstellbar ist.According to the invention, to solve this problem it is provided that when using a two-wire signal line common to all the signal signals to be transmitted by an occurring signal, an existing signal can be briefly switched off by an interruption circuit and the acknowledgment relay can thereby be reset to its starting position which switches the signal device on.

Hat daher der Benutzer der Schaltungsanordnung das Signalgerät durch Betätigen der Taste abgeschaltet und tritt ein zweites Meldesignal auf, so wird das Signalgerät erneut aktiviert. Diese Einrichtung ermöglicht es, das Meldesignal mittels einer üblichen Installationsleitung zu übertragen, deren genormte Aderfarben keine beliebige Belegung gestattet. Insbesondere darf der in den Installationsleitungen mitgeführte Schutzleiter mit gelb/grüner Markierung unter keinen Umständen zur Stromführung benutzt werden. Nunmehr kann unter Einhaltung dieser Vorschriften und ohne zusätzliche Verlegung einer neuen Leitung in bestehenden Anlagen eine weitere Meldung übertragen werden.If the user of the circuit arrangement has therefore switched off the signal device by pressing the button and a second message signal occurs, the signal device is reactivated. This facility enables the notification signal to be transmitted by means of a conventional installation cable, the standardized core colors of which do not allow any assignment. In particular, the protective conductor with yellow / green marking in the installation cables must under no circumstances be used to conduct current. Another message can now be transmitted in compliance with these regulations and without the additional laying of a new line in existing systems.

Durch die DE 25 51 951 B2 ist ein Steuergerät für eine Melde- oder Alarmanlage bekanntgeworden, bei der eine im Meldezustand befindliche Meldeschleife durch Drücken einer Taste von der Alarmvorrichtung abgetrennt wird, die dadurch für das Signalisieren des Ansprechens einer weiteren Meldeleitung wieder frei ist. Damit steht aber das Meldesignal am Ort des Signalgebers nicht mehr zu Verfügung. Demgegenüber wird durch die Erfindung erreicht, daß erst dann, wenn ein zweites Meldesignal auftritt, dieses zum Ort des Signalgebers übertragen und zur Anzeige bzw. Meldung gebracht wird.From DE 25 51 951 B2, a control device for a signaling or alarm system has become known, in which a signaling loop in the signaling state is separated from the alarm device by pressing a button, which is thereby free again for signaling the response of another signaling line. However, this means that the signaling signal is no longer available at the location of the signal transmitter. In contrast, it is achieved by the invention that it is only when a second signaling signal occurs that it is transmitted to the location of the signal generator and brought to the display or message.

Eine Mehrfachausnutzung von Signalleitungen bei einer Einrichtung zur Übertragung und Quittierung von Störmeldungen nach der DE 23 18 879 B2 wird durch eine Matrix aus Dioden, Kontakten und Meldekontakten erreicht. Diese Schaltungsanordnung betrifft jedoch die Übertragung und Quittierung von Störmeldungen zwischen einer Zentrale und mehreren Anlagenverteilern, während die Erfindung die Übertragung der Störmeldung zu einem Signalgeber und die Mehrfachausnutzung der zum Signalgeber führenden Leitung betrifft.Multiple use of signal lines in a device for transmission and acknowledgment of fault messages according to DE 23 18 879 B2 is achieved by a matrix of diodes, contacts and signaling contacts. However, this circuit arrangement relates to the transmission and acknowledgment of fault messages between a control center and several system distributors, while the invention relates to the transmission of the fault message to a signal generator and the multiple use of the line leading to the signal generator.

Die Erfindung wird im folgenden anhand des in der Figur gezeigten Ausführungsbeispieles näher erläutert.The invention is explained below with reference to the embodiment shown in the figure.

In der Figur ist eine Schaltungsanordnung gezeigt, die zur Übertragung von zwei Meldesignalen M1 und M2 zu einem gemeinsamen Signalgerät SG dient. Beispielsweise kann das Meldesignal M1 dem Grenzwert der Belastung eines elektrischen Verbrauchers zugeordnet sein, während das Meldesignal M2 durch das Überschreiten einer Grenztemperatur ausgelöst wird. Zur Vereinfachung sind in der Figur die Meldesignale M1 und M2 als Blöcke dargestellt, wobei von einer Darstellung abgesehen wird, wie die Meldesignale aus den zugrundeliegenden Größen abgeleitet werden. Den Meldesignalen M1 und M2 ist jeweils ein Melderelais R1 bzw. R2 zugeordnet, durch die eine Signalleitung SL an eine Spannungsquelle U anlegbar ist. Die Signalleitung SL ist unterbrochen dargestellt, um anzudeuten, daß sich das Signalgerät SG und die Melderelais R1 und R2 an räumlich entfernten Stellen befinden.In the figure, a circuit arrangement is shown, which serves to transmit two message signals M1 and M2 to a common signal device SG. For example, the message signal M1 can be the limit value of an electrical load Be assigned to the consumer while the alarm signal M2 is triggered when a limit temperature is exceeded. For the sake of simplicity, the indicator signals M1 and M2 are shown as blocks in the figure, with the exception of how the indicator signals are derived from the parameters on which they are based. The signal signals M1 and M2 are each assigned a signal relay R1 or R2, through which a signal line SL can be applied to a voltage source U. The signal line SL is shown interrupted to indicate that the signal device SG and the signal relays R1 and R2 are located at spatially distant locations.

Am Ort Signalgerätes SG befindet sich ein Quittierrelais QR, dessen Umschaltkontakt im Ruhezustand das Signalgerät SG an die Signalleitung SL anlegt. Wird eine Quittiertaste QT betätigt, so geht das Quittierrelais QR in Selbsthaltung über und schaltet gleichzeitig das Signalgerät SG ab.At the location of the signal device SG there is an acknowledgment relay QR, the changeover contact of which the signal device SG applies to the signal line SL in the idle state. If an acknowledgment button QT is actuated, the acknowledgment relay QR goes into latching and switches off the signal device SG at the same time.

Jedes der Meldesignale M1 und M2 wird auch eine Unterbrechungsschaltung US zugeführt, die es ermöglicht, das Signalgerät SG für beide Meldesignale M1 und M2 zu benutzen. Dies geschieht dadurch, daß beim Auftreten eines der Meldesignale M1 oder M2 die Unterbrechungsschaltung US betätigt. Dies hat zur Folge, daß beim Auftreten des zweiten Meldesignals das jeweils schon bestehende andere Meldesignal durch die Unterbrechungsschaltung US kurzzeitig abgeschaltet und hierdurch das Quittierrelais QR in die Ausgangsstellung zurückgestellt wird. In dem gezeigten Ausführungsbeispiel geschieht dies dadurch, daß in die gemeinsame Anschlußleitung beider Melderelais R1 und R2 ein von der Unterbrechungsschaltung US gesteuerter Transistor T eingeschaltet ist. Nch der Rückstellung des Quittierrelais spricht das Signalgerät SG erneut an und bringt dem Benutzer zur Kenntnis, daß ein weiteres Meldesignal vorliegt. Er kann sich dann davon vergewissern, um welche Meldung es sich handelt.Each of the signal signals M1 and M2 is also supplied with an interrupt circuit US, which makes it possible to use the signal device SG for both signal signals M1 and M2. This is done by actuating the interrupt circuit US when one of the signal signals M1 or M2 occurs. The result of this is that when the second signal occurs, the other signal that already exists is briefly switched off by the interruption circuit US, and the acknowledgment relay QR is thereby reset to the starting position. In the exemplary embodiment shown, this is done in that a transistor T controlled by the interruption circuit US is switched on in the common connecting line of both signaling relays R1 and R2. After resetting the acknowledgment relay, the signal device SG responds again and informs the user that there is a further signal. He can then make sure which message it is.

Die Signalleitung SL braucht nur zwei stromführende Adern aufzuweisen, daher sind handelsübliche Installationsleitungen verwendbar. Insbesondere können bereits bestehende Meldeeinrichtungen ohne Verlegung zusätzlicher Leitungen und Installation weiterer Signalgeräte für zusätzliche Meldungen umgerüstet werden.The signal line SL only needs to have two live wires, so standard installation cables can be used. In particular, existing signaling devices can be converted for additional messages without laying additional lines and installing additional signaling devices.

Claims (1)

Schaltungsanordnung zur Übermittlung von wenigstens zwei Meldesignalen (M1, M2) von einem Überwachungsgerät zu einem räumlich entfernten Signalgerät (SG) mittels einer Meldeleitung (SL), wobei am Ort des Signalgerätes (SG) ein durch Betätigung einer Taste (QT) in Selbsthaltung zu überführendes Quittierrelais (QR) zur Abschaltung des Signalgerätes (SG) angeordnet ist,
dadurch gekennzeichnet, daß bei Verwendung einer für alle zu übertragenden Meldesignale (M1, M2) gemeinsamen zweiadrigen Signalleitung (SL) durch ein auftretendes Meldesignal (M1, M2) ein bereits bestehendes Meldesignal (M2, M1) durch eine Unterbrechungsschaltung (US) kurzzeitig abschaltbar und hierdurch das Quittierrelais (QR) in seine das Signalgerät (SG) einschaltende Ausgangsstellung zurückstellbar ist.
Circuit arrangement for the transmission of at least two signal signals (M1, M2) from a monitoring device to a spatially distant signal device (SG) by means of a signaling line (SL), a signal to be transferred to the signal device (SG) by pressing a button (QT) Acknowledgment relay (QR) for switching off the signal device (SG) is arranged,
characterized in that when using a two-wire signal line (SL) common to all the signal signals to be transmitted (M1, M2) by an occurring signal (M1, M2), an existing signal (M2, M1) can be briefly switched off by an interruption circuit (US) and in this way the acknowledgment relay (QR) can be reset to its starting position which switches on the signal device (SG).
EP96250027A 1995-02-09 1996-01-31 Circuit for transmission of at least two information signals Expired - Lifetime EP0726552B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19505794 1995-02-09
DE19505794A DE19505794C1 (en) 1995-02-09 1995-02-09 Circuit arrangement for the transmission of at least two message signals

Publications (2)

Publication Number Publication Date
EP0726552A1 true EP0726552A1 (en) 1996-08-14
EP0726552B1 EP0726552B1 (en) 2000-06-14

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EP96250027A Expired - Lifetime EP0726552B1 (en) 1995-02-09 1996-01-31 Circuit for transmission of at least two information signals

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AT (1) ATE193952T1 (en)
DE (2) DE19505794C1 (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2551951A1 (en) * 1974-11-20 1976-08-12 Nittan Co Ltd CONTROL UNIT FOR A SIGNAL OR ALARM SYSTEM
EP0005046A1 (en) * 1978-04-17 1979-10-31 Chubb Electronics Limited Electrical alarm circuits and systems
US4743901A (en) * 1985-04-03 1988-05-10 Nippon Soken, Inc. Signal transmission system

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2318879B2 (en) * 1973-04-12 1978-03-30 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Device for the transmission and acknowledgment of fault messages

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2551951A1 (en) * 1974-11-20 1976-08-12 Nittan Co Ltd CONTROL UNIT FOR A SIGNAL OR ALARM SYSTEM
EP0005046A1 (en) * 1978-04-17 1979-10-31 Chubb Electronics Limited Electrical alarm circuits and systems
US4743901A (en) * 1985-04-03 1988-05-10 Nippon Soken, Inc. Signal transmission system

Also Published As

Publication number Publication date
EP0726552B1 (en) 2000-06-14
DE19505794C1 (en) 1996-08-08
DE59605416D1 (en) 2000-07-20
ATE193952T1 (en) 2000-06-15

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