EP0456080A2 - Indication method and circuit of different input signals - Google Patents

Indication method and circuit of different input signals Download PDF

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Publication number
EP0456080A2
EP0456080A2 EP91106956A EP91106956A EP0456080A2 EP 0456080 A2 EP0456080 A2 EP 0456080A2 EP 91106956 A EP91106956 A EP 91106956A EP 91106956 A EP91106956 A EP 91106956A EP 0456080 A2 EP0456080 A2 EP 0456080A2
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European Patent Office
Prior art keywords
control signal
input signal
circuit
control
threshold value
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EP91106956A
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German (de)
French (fr)
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EP0456080A3 (en
EP0456080B1 (en
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Rudolf Dipl.-Ing. Zeitschek
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Siemens AG Oesterreich
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Siemens AG Oesterreich
Siemens AG
Siemens Corp
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    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING SYSTEMS, e.g. PERSONAL 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

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  • the invention relates to a method for displaying three different input signal states, "ON”, “OFF” and “FLASHING", with a single signaling element such as a lamp or a bell, preferably for the control room of an electrical system, in which one, by means of a Electrical control signal derived from the input signal states controls the signaling device in such a way that it is switched on when the input signal state is "ON”, is switched off when the input signal state is “OFF” and is cyclically switched over when the input signal state is "FLASHING", and for monitoring of the input signal states by means of two threshold value circuits also controlled by the electrical control signal and with an evaluation circuit.
  • the invention further relates to a circuit arrangement for carrying out the method.
  • DE A1 33 46 527 discloses a method and an arrangement for fail-safe alarm evaluation of an alarm line. Therefore, the deviation from the idle value of a zone is determined using a window discriminator (FD). It is irrelevant whether this deviation is positive or negative.
  • the subject of DE A1 31 47 742 contains a circuit arrangement for monitoring the occurrence of an alarm signal on a signal line. It essentially consists of two comparators that are connected to the signaling line. Both documents have in common that only a single output signal is derived from the signal state of the signaling line (signaling line).
  • the invention has for its object to use a control signal multiple times.
  • the method mentioned in the introduction is developed in such a way that four different control signal levels are formed from the three input signal states in such a way that the highest of the four control signal levels for the input signal state "ON” and the lowest of the four control signal levels for the input signal state "OFF” and for the input signal state "FLASHING", the two further control signal levels, which are in value between the lowest and the highest control signal level, are provided, and that the signaling device is switched on by means of one of the two higher control signal levels, and the signaling device is switched off by means of one of the two lower control signal levels, and that the first threshold circuit outputs a first output signal when the highest of the four control signal levels occurs and the second threshold circuit outputs a second output signal when the lowest of the four control signal levels occur, and that the instantaneous input signal state is determined by logically combining the two output signals of the threshold value circuits by means of an evaluation circuit.
  • two control signals are derived from a control signal that represents three different signal states. These are the output or signal of the signaling device, for example an acoustic or optical signal and the electrical output or monitoring signal of the evaluation circuit.
  • An advantageous circuit arrangement for carrying out the method is constructed in such a way that the signaling device and the two threshold value circuits are connected in parallel to one another on the output side of the control device, and that the first threshold value circuit has a first threshold value, the value of which lies between the highest of the four control signal levels and the second highest control signal level, that the second threshold circuit has a second threshold whose value lies between the lowest of the four control signal levels and the second lowest control signal level, and that the two outputs of the threshold circuits are connected to the two inputs of the evaluation circuit, which have at their output a signal corresponding to the input signal states of the control device delivers.
  • Each threshold value output combination thus clearly represents an input signal state, and the "FLASHING" state is thus also distinguished from the other two states at all times.
  • FIG. 2 shows a diagram of an exemplary course of the level of the electrical control signal in a circuit according to FIG. 1.
  • the diagram is divided into three different time periods T1, T2, T3.
  • the lowest control signal level U1 is present during the first period T1. This causes the message organ 2 to be switched off.
  • the second lowest control signal level U2 and the second highest control signal level U3 are switched cyclically, the signaling device 2 "flashes".
  • the signaling device is switched on by the highest control signal level U4.
  • a first threshold value S1 lies between the highest control signal level U4 and the second highest control signal level U3.
  • a second threshold value S2 lies between the second lowest control signal level U2 and the lowest control signal level U1.
  • this second threshold value S2 it is possible to distinguish between the input signal state "OFF” and the two other input signal states “FLASHING” and "ON”.

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  • Engineering & Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)
  • Electronic Switches (AREA)
  • Arrangements For Transmission Of Measured Signals (AREA)
  • Circuit Arrangement For Electric Light Sources In General (AREA)
  • Cookers (AREA)
  • Emergency Alarm Devices (AREA)
  • Testing And Monitoring For Control Systems (AREA)
  • Time-Division Multiplex Systems (AREA)
  • Electric Clocks (AREA)

Abstract

Es werden ein Verfahren und eine Schaltungsanordnung zur Anzeige von unterschiedlichen Eingangssignalzuständen angegeben, bei denen ein Meldeorgan dauerhaft oder intermittierend ein- oder ausgeschaltet wird. Dies geschieht derart, daß für den intermittierenden Betrieb Pegel (U2, U3) vorgesehen werden, die sich von den Pegel für dauerhafte Ein(U4) bzw. Ausschaltung (U1) unterscheiden.

Figure imgaf001
A method and a circuit arrangement for displaying different input signal states are specified in which a signaling device is switched on or off permanently or intermittently. This is done in such a way that levels (U2, U3) are provided for the intermittent operation which differ from the levels for permanent on (U4) or off (U1).
Figure imgaf001

Description

Die Erfindung betrifft ein Verfahren zur Anzeige von drei unterschiedlichen Eingangssignalzuständen, "EIN", "AUS" und "BLINKEN", mit einem einzelnen Meldeorgan wie beispielsweise einer Lampe oder einer Klingel, vorzugsweise für die Schaltwarte einer elektrischen Anlage, bei dem ein, mittels einer Steuereinrichtung aus den Eingangssignalzuständen abgeleitetes, elektrisches Steuersignal das Meldeorgan in der Weise ansteuert, daß es bei Vorliegen des Eingangssignalzustandes "EIN" eingeschaltet, bei Vorliegen des Eingangssignalzustandes "AUS" ausgeschaltet und während des Vorliegens des Eingangssignalzustandes "BLINKEN" zyklisch umgeschaltet wird, und zur Überwachung der Eingangssignalzustände mittels zweier ebenfalls durch das elektrische Steuersignal angesteuerter Schwellwertschaltungen und mit einer Auswerteschaltung.The invention relates to a method for displaying three different input signal states, "ON", "OFF" and "FLASHING", with a single signaling element such as a lamp or a bell, preferably for the control room of an electrical system, in which one, by means of a Electrical control signal derived from the input signal states controls the signaling device in such a way that it is switched on when the input signal state is "ON", is switched off when the input signal state is "OFF" and is cyclically switched over when the input signal state is "FLASHING", and for monitoring of the input signal states by means of two threshold value circuits also controlled by the electrical control signal and with an evaluation circuit.

Weiters betrifft die Erfindung eine Schaltungsanordnung zur Durchführung des Verfahrens.The invention further relates to a circuit arrangement for carrying out the method.

Die Steuerung technischer Anlagen und Prozesse durch den Menschen erfordert die leicht unterscheidbare und eindringliche Darstellung bestimmter Anlagen- oder Prozeßzustände. Dies geschieht mit akustischen und/oder optischen Meldeorganen, wie Lampen oder Läutwerken. Für kritische Zustände, die rasches Eingreifen des Bedienpersonals erfordern, wählt man eine besonders eindringliche Darstellung durch periodisches Ein- und Ausschalten des Meldeorganes, während die ordnungsgemäße Funktion vorwiegend durch einen Dauerzustand eines Meldeorganes dargestellt wird. In vielen Fällen ist es überdies notwendig, den Zustand der Meldeorgane mit geeigneten Systemen zu überwachen und gegebenenfalls automatische Steuerungseingriffe durchzuführen.The control of technical systems and processes by humans requires the easily distinguishable and haunting representation of certain system or process states. This is done with acoustic and / or optical signaling devices, such as lamps or ringing. For critical conditions that require rapid intervention by the operating personnel, a particularly haunting representation is selected by periodically switching the signaling element on and off, while the proper function is mainly represented by a permanent state of a signaling element. In many cases it is also necessary to monitor the status of the signaling devices with suitable systems and, if necessary, to carry out automatic control interventions.

Aus der DE A1 33 46 527 sind ein Verfahren und eine Anordnung zur störungssicheren Alarmauswertung einer Meldelinie bekannt. Daher wird die Abweichung vom Ruhewert einer Meldelinie mittels Fensterdiskriminator (FD) festgestellt. Es ist unerheblich, ob diese Abweichung positiv oder negativ ist. Der Gegenstand der DE A1 31 47 742 beinhaltet eine Schaltungsanordnung zum Überwachen des Auftretens eines Alarmsignals auf einer Meldeleitung. Sie besteht im wesentlichen aus zwei Komparatoren, die an die Meldeleitung angeschlossen sind. Beiden Schriften ist gemeinsam, daß aus dem Signalzustand der Meldeleitung (Meldelinie) jeweils nur ein einziges Ausgangssignal abgeleitet wird.DE A1 33 46 527 discloses a method and an arrangement for fail-safe alarm evaluation of an alarm line. Therefore, the deviation from the idle value of a zone is determined using a window discriminator (FD). It is irrelevant whether this deviation is positive or negative. The subject of DE A1 31 47 742 contains a circuit arrangement for monitoring the occurrence of an alarm signal on a signal line. It essentially consists of two comparators that are connected to the signaling line. Both documents have in common that only a single output signal is derived from the signal state of the signaling line (signaling line).

Der Erfindung liegt die Aufgabe zugrunde, ein Steuersignal mehrfach auszunutzen.The invention has for its object to use a control signal multiple times.

Dazu wird das einleitend genannte Verfahren erfindungsgemäß in der Weise weitergebildet, daß aus den drei Eingangssignalzuständen vier unterschiedliche Steuersignalpegel in der Weise gebildet werden, daß für den Eingangssignalzustand "EIN" der höchste der vier Steuersignalpegel, für den Eingangssignalzustand "AUS" der niedrigste der vier Steuersignalpegel und für den Eingangssignalzustand "BLINKEN" die beiden weiteren, wertmäßig zwischen dem niedrigsten und dem höchsten Steuersignalpegel liegenden Steuersignalpegel vorgesehen sind, und daß mittels eines der beiden höheren Steuersignalpegel das Meldeorgan eingeschaltet, und mittels eines der beiden niedrigeren Steuersignalpegel das Meldeorgan ausgeschaltet wird, und daß die erste Schwellwertschaltung bei Auftreten des höchsten der vier Steuersignalpegel ein erstes Ausgangssignal abgibt und die zweite Schwellwertschaltung bei Auftreten des niedrigsten der vier Steuersignalpegel ein zweites Ausgangssignal abgibt, und daß durch logische Verknüpfung der beiden Ausgangssignale der Schwellwertschaltungen mittels Auswerteschaltung der augenblickliche Eingangssignalzustand bestimmt wird.For this purpose, the method mentioned in the introduction is developed in such a way that four different control signal levels are formed from the three input signal states in such a way that the highest of the four control signal levels for the input signal state "ON" and the lowest of the four control signal levels for the input signal state "OFF" and for the input signal state "FLASHING", the two further control signal levels, which are in value between the lowest and the highest control signal level, are provided, and that the signaling device is switched on by means of one of the two higher control signal levels, and the signaling device is switched off by means of one of the two lower control signal levels, and that the first threshold circuit outputs a first output signal when the highest of the four control signal levels occurs and the second threshold circuit outputs a second output signal when the lowest of the four control signal levels occur, and that the instantaneous input signal state is determined by logically combining the two output signals of the threshold value circuits by means of an evaluation circuit.

Erfindungsgemäß werden von einem Steuersignal, das drei unterschiedliche Signalzustände darstellt, zwei Melde- bzw. Überwachungssignale abgeleitet. Es sind dies das Ausgangs- oder Meldesignal des Meldeorgans, beispielsweise ein akustisches oder optisches Signal und das elektrische Ausgangs- oder Überwachungssignal der Auswerteschaltung.According to the invention, two control signals are derived from a control signal that represents three different signal states. These are the output or signal of the signaling device, for example an acoustic or optical signal and the electrical output or monitoring signal of the evaluation circuit.

Eine vorteilhafte Schaltungsanordnung zur Durchführung des Verfahrens ist derart aufgebaut, daß an die Steuereinrichtung ausgangsseitig das Meldeorgan und die zwei Schwellwertschaltungen zueinander parallel angeschlossen sind, daß die erste Schwellwertschaltung einen ersten Schwellwert aufweist, dessen Wert zwischen dem höchsten der vier Steuersignalpegel und dem zweithöchsten Steuersignalpegel liegt, daß die zweite Schwellwertschaltung einen zweiten Schwellwert aufweist, dessen Wert zwischen dem niedrigsten der vier Steuersignalpegel und dem zweitniedrigsten Steuersignalpegel liegt, und daß die beiden Ausgänge der Schwellwertschaltungen mit den beiden Eingängen der Auswerteschaltung verbunden sind, die an ihrem Ausgang ein den Eingangssignalzuständen der Steuereinrichtung entsprechendes Signal abgibt.An advantageous circuit arrangement for carrying out the method is constructed in such a way that the signaling device and the two threshold value circuits are connected in parallel to one another on the output side of the control device, and that the first threshold value circuit has a first threshold value, the value of which lies between the highest of the four control signal levels and the second highest control signal level, that the second threshold circuit has a second threshold whose value lies between the lowest of the four control signal levels and the second lowest control signal level, and that the two outputs of the threshold circuits are connected to the two inputs of the evaluation circuit, which have at their output a signal corresponding to the input signal states of the control device delivers.

Die Erfindung wird anhand von zwei Figuren näher erläutert.

  • Figur 1 zeigt ein Ausführungsbeispiel einer erfindungsgemäßen Schaltungsanordnung,
  • Figur 2 zeigt einen beispielhaften Verlauf des am Meldeorgan anliegenden Pegels.
The invention is explained in more detail with reference to two figures.
  • FIG. 1 shows an exemplary embodiment of a circuit arrangement according to the invention,
  • Figure 2 shows an example of the course of the level applied to the signaling element.

Die in Figur 1 dargestellte Schaltungsanordnung besteht aus einer Steuereinrichtung 1, einer Lampe als Meldeorgan 2, zwei Schwellwertschaltungen 3, 4 und einer Auswerteschaltung 5. Die Funktion der Schaltungsanordnung kann man sich wie folgt vorstellen: Die drei unterschiedlichen mit "EIN", "AUS" und "BLINKEN" bezeichneten Signalzustände des Eingangssignales EG werden von der Steuereinrichtung 1 mittels einer Spannung an ihrem Steuerausgang AG dargestellt. Der Zustand "EIN" wird durch eine dauerhafte Spannung vom Wert 10 V, der Zustand "AUS" durch eine dauerhafte Spannung vom Wert 0 V und der Zustand "BLINKEN" durch eine intermittierende Spannungsfolge mit den beiden Werten 9 V und 1 V dargestellt. Die an den Steuerausgang AG angeschlossene Lampe 2 mit einem nichtlinearen Zusammenhang zwischen angelegter Spannung und abgegebener Strahlung leuchtet bei Anliegen einer Spannung von 9 V oder 10 V und bleibt bei einem anliegenden Spannungswert von 1 V oder 0 V dunkel. Die beiden ebenfalls an den Steuerausgang AG der Steuereinrichtung 1 angeschlossene Schwellwertschaltungen 3, 4 weisen unterschiedliche Schwellwerte von 9,5 V bzw. 0,5 V auf. Durch die logische Verknüpfung ihrer Ausgänge mittels der Auswerteschaltung 5 wird der Signalzustand des Eingangssignales EG bestimmt. Es sind folgende Schwellwertausgangskombinationen möglich:

  • Eingangssignalzustand "EIN":
  • Schwellwertschaltung 3 (9,5 V): Ein
  • Schwellwertschaltung 4 (0,5 V): Ein
  • Eingangssignalzustand "AUS":
  • Schwellwertschaltung 3: Aus
  • Schwellwertschaltung 4: Aus
  • Eingangssignalzustand "BLINKEN":
  • Schwellwertschaltung 3: Aus
  • Schwellwertschaltung 4: Ein
The circuit arrangement shown in Figure 1 consists of a control device 1, a lamp as a signaling element 2, two threshold value circuits 3, 4 and an evaluation circuit 5. Die The function of the circuit arrangement can be imagined as follows: The three different signal states of the input signal EG designated “ON”, “OFF” and “FLASHING” are represented by the control device 1 by means of a voltage at its control output AG. The "ON" state is represented by a permanent voltage of 10 V, the "OFF" state by a permanent voltage of 0 V and the "FLASHING" state by an intermittent voltage sequence with the two values 9 V and 1 V. The lamp 2 connected to the control output AG with a non-linear relationship between the applied voltage and the emitted radiation lights up when a voltage of 9 V or 10 V is present and remains dark when there is a voltage value of 1 V or 0 V. The two threshold value circuits 3, 4 also connected to the control output AG of the control device 1 have different threshold values of 9.5 V and 0.5 V, respectively. The logic state of their outputs by means of the evaluation circuit 5 determines the signal state of the input signal EG. The following threshold value output combinations are possible:
  • Input signal state "ON":
  • Threshold circuit 3 (9.5 V): On
  • Threshold circuit 4 (0.5 V): On
  • Input signal state "OFF":
  • Threshold circuit 3: Off
  • Threshold circuit 4: Off
  • Input signal state "FLASHING":
  • Threshold circuit 3: Off
  • Threshold circuit 4: on

Jede Schwellwertausgangskombination stellt somit eindeutig einen Eingangssignalzustand dar, auch der Zustand "BLINKEN" wird damit zu jedem Zeitpunkt von den beiden anderen Zuständen unterschieden.Each threshold value output combination thus clearly represents an input signal state, and the "FLASHING" state is thus also distinguished from the other two states at all times.

Figur 2 zeigt in einem Diagramm einen beispielhaften Verlauf des Pegels des elektrischen Steuersignals in einer Schaltung nach Fig. 1. Das Diagramm gliedert sich in drei unterschiedliche Zeiträume Tl,T2,T3. Während dem ersten Zeitraum T1 liegt der niedrigste Steuersignalpegel U1 vor. Dieser bewirkt, daß das Meldeorgan 2 ausgeschaltet ist. Während dem darauffolgenden zweiten Zeitraum T2 wird zwischen dem zweitniedrigsten Steuersignalpegel U2 und dem zweithöchsten Steuersignalpegel U3 zyklisch umgeschaltet, das Meldeorgan 2 "blinkt". Während dem dritten Zeitraum T3 wird das Meldeorgan durch den höchsten Steuersignalpegel U4 eingeschaltet. Ein erster Schwellwert S1 liegt wertmäßig zwischen dem höchsten Steuersignalpegel U4 und dem zweithöchsten Steuersignalpegel U3. Mit Hilfe dieses ersten Schwellwertes S1 ist eine Unterscheidung zwischen dem Eingangssignalzustand "EIN" und den beiden anderen Eingangssignalzuständen "BLINKEN" und "AUS" möglich. Ein zweiter Schwellwert S2 liegt wertmäßig zwischen dem zweitniedrigsten Steuersignalpegel U2 und dem niedrigsten Steuersignalpegel U1. Mit Hilfe dieses zweiten Schwellwertes S2 ist eine Unterscheidung zwischen dem Eingangssignalzustand "AUS" und den beiden anderen Eingangssignalzuständen "BLINKEN" und "EIN" möglich. Durch Kombination der beiden Unterscheidungsergebnisse ist zu jedem Zeitpunkt eine eindeutige Bewertung des Eingangssignalzustandes möglich.FIG. 2 shows a diagram of an exemplary course of the level of the electrical control signal in a circuit according to FIG. 1. The diagram is divided into three different time periods T1, T2, T3. The lowest control signal level U1 is present during the first period T1. This causes the message organ 2 to be switched off. During the subsequent second time period T2, the second lowest control signal level U2 and the second highest control signal level U3 are switched cyclically, the signaling device 2 "flashes". During the third period T3, the signaling device is switched on by the highest control signal level U4. In terms of value, a first threshold value S1 lies between the highest control signal level U4 and the second highest control signal level U3. With the aid of this first threshold value S1 it is possible to distinguish between the input signal state "ON" and the two other input signal states "FLASHING" and "OFF". In terms of value, a second threshold value S2 lies between the second lowest control signal level U2 and the lowest control signal level U1. With the aid of this second threshold value S2, it is possible to distinguish between the input signal state "OFF" and the two other input signal states "FLASHING" and "ON". By combining the two differentiation results, an unambiguous evaluation of the input signal state is possible at any time.

Claims (2)

1. Verfahren zur Anzeige von drei unterschiedlichen Eingangssignalzuständen, "EIN", "AUS" und "BLINKEN", mit einem einzelnen Meldeorgan (2) wie beispielsweise einer Lampe oder einer Klingel, vorzugsweise für die Schaltwarte einer elektrischen Anlage, bei dem ein, mittels einer Steuereinrichtung (1) aus den Eingangssignalzuständen abgeleitetes, elektrisches Steuersignal das Meldeorgan (2) in der Weise ansteuert, daß es bei Vorliegen des Eingangssignalzustandes "EIN" eingeschaltet, bei Vorliegen des Eingangssignalzustandes "AUS" ausgeschaltet und während des Vorliegens des Eingangssignalzustandes "BLINKEN" zyklisch umgeschaltet wird, und zur Überwachung der Eingangssignalzustände mittels zweier ebenfalls durch das elektrische Steuersignal angesteuerter Schwellwertschaltungen (3, 4) und mit einer Auswerteschaltung (5), dadurch gekennzeichnet, daß aus den drei Eingangssignalzuständen vier unterschiedliche Steuersignalpegel in der Weise gebildet werden, daß für den Eingangssignalzustand "EIN" der höchste der vier Steuersignalpegel (U4), für den Eingangssignalzustand "AUS" der niedrigste der vier Steuersignalpegel (U1) und für den Eingangssignalzustand "BLINKEN" die beiden weiteren, wertmäßig zwischen dem niedrigsten und dem höchsten Steuersignalpegel liegenden Steuersignalpegel (U2, U3) vorgesehen sind, und daß mittels eines der beiden höheren Steuersignalpegel (U3, U4) das Meldeorgan (2) eingeschaltet, und mittels eines der beiden niedrigeren Steuersignalpegel (U1, U2) das Meldeorgan (2) ausgeschaltet wird, und daß die erste Schwellwertschaltung (3) bei Auftreten des höchsten der vier Steuersignalpegel (U4) ein erstes Ausgangssignal abgibt und die zweite Schwellwertschaltung (4) bei Auftreten des niedrigsten der vier Steuersignalpegel (U1) ein zweites Ausgangssignal abgibt, und daß durch logische Verknüpfung der beiden Ausgangssignale der Schwellwertschaltungen mittels Auswerteschaltung (5) der augenblickliche Eingangssignalzustand bestimmt wird.1. A method for displaying three different input signal states, "ON", "OFF" and "FLASHING", with a single signaling device (2) such as a lamp or a bell, preferably for the control room of an electrical system, in which a, by A control device (1), derived from the input signal states, controls the signaling device (2) in such a way that it is switched on when the input signal state is "ON", is switched off when the input signal state is "OFF" and while the input signal state is "FLASHING" is switched cyclically, and for monitoring the input signal states by means of two threshold value circuits (3, 4) also controlled by the electrical control signal and with an evaluation circuit (5), characterized in that four different control signal levels are formed from the three input signal states in such a way that for the input signal State "ON" is the highest of the four control signal levels (U4), for the input signal state "OFF" the lowest of the four control signal levels (U1) and for the input signal state "FLASHING" the two other control signal levels (U2. in terms of value between the lowest and the highest control signal level) , U3) are provided, and that the signaling device (2) is switched on by means of one of the two higher control signal levels (U3, U4), and the signaling device (2) is switched off by means of one of the two lower control signal levels (U1, U2), and that the first Threshold circuit (3) outputs a first output signal when the highest of the four control signal levels (U4) occurs and the second threshold circuit (4) outputs a second output signal when the lowest of the four control signal levels (U1) occurs, and that the instantaneous input signal state is determined by logically combining the two output signals of the threshold value circuits by means of an evaluation circuit (5). 2. Schaltungsanordnung zur Durchführung des Verfahrens nach Anspruch 1, dadurch gekennzeichnet, daß an die Steuereinrichtung (1) ausgangsseitig das Meldeorgan (2) und die zwei Schwellwertschaltungen (3, 4) zueinander parallel angeschlossen sind, daß die erste Schwellwertschaltung (3) einen ersten Schwellwert (51) aufweist, dessen Wert zwischen dem höchsten der vier Steuersignalpegel (U4) und dem zweithöchsten Steuersignalpegel (U3) liegt, daß die zweite Schwellwertschaltung (4) einen zweiten Schwellwert (S2) aufweist, dessen Wert zwischen dem niedrigsten der vier Steuersignalpegel (U1) und dem zweitniedrigsten Steuersignalpegel (U2) liegt, und daß die beiden Ausgänge der Schwellwertschaltungen (3, 4) mit den beiden Eingängen der Auswerteschaltung (5) verbunden sind, die an ihrem Ausgang ein den Eingangssignalzuständen der Steuereinrichtung entsprechendes Signal abgibt. 2. Circuit arrangement for performing the method according to claim 1, characterized in that the signaling device (2) and the two threshold value circuits (3, 4) are connected in parallel to one another on the output side of the control device (1), that the first threshold value circuit (3) has a first threshold value (51), the value of which lies between the highest of the four control signal levels (U4) and the second highest control signal level (U3), that the second threshold circuit (4) has a second threshold value (S2), the value of which lies between the lowest of the four control signal levels (U1) and the second lowest control signal level (U2), and that the two outputs of the threshold circuits (3, 4) are connected to the two inputs of the evaluation circuit (5), which outputs a signal corresponding to the input signal states of the control device at its output.
EP91106956A 1990-05-11 1991-04-29 Indication method and circuit of different input signals Expired - Lifetime EP0456080B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT1046/90 1990-05-11
AT0104690A AT398859B (en) 1990-05-11 1990-05-11 CIRCUIT FOR MONITORING AND OPERATING A NOTIFICATION ORGAN

Publications (3)

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EP0456080A2 true EP0456080A2 (en) 1991-11-13
EP0456080A3 EP0456080A3 (en) 1993-06-16
EP0456080B1 EP0456080B1 (en) 1996-09-11

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EP91106956A Expired - Lifetime EP0456080B1 (en) 1990-05-11 1991-04-29 Indication method and circuit of different input signals

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EP (1) EP0456080B1 (en)
AT (2) AT398859B (en)
DE (1) DE59108160D1 (en)
DK (1) DK0456080T3 (en)
DZ (1) DZ1500A1 (en)
ES (1) ES2094167T3 (en)
GR (1) GR3021921T3 (en)
MA (1) MA22148A1 (en)
TN (1) TNSN91034A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0562960A1 (en) * 1992-03-27 1993-09-29 Cegelec Surveillance and alarm device for monitoring and control system

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Publication number Priority date Publication date Assignee Title
US3944921A (en) * 1970-12-11 1976-03-16 Canon Kabushiki Kaisha Logic level test probe with grated oscillator
JPS49125066A (en) * 1973-01-27 1974-11-29
GB1447291A (en) * 1973-08-04 1976-08-25 Honeywell Ltd Logic level testers
DE2350362B2 (en) * 1973-10-08 1975-07-31 Siemens Ag, 1000 Berlin Und 8000 Muenchen Limit indicator for pulse-operated circuits
DE2451872C2 (en) * 1974-10-31 1976-10-21 Siemens Ag CIRCUIT ARRANGEMENT FOR LEVEL MONITORING
DE2455656B1 (en) * 1974-11-25 1975-09-11 Siemens Ag Threshold level
DE2729108C3 (en) * 1977-06-28 1980-03-13 Siemens Ag, 1000 Berlin Und 8000 Muenchen Circuit arrangement for recognizing clock signals and for converting them into digital continuous signals
US4307389A (en) * 1980-04-25 1981-12-22 Ford Motor Company Decoding circuit
DE3147742A1 (en) * 1981-12-02 1983-06-09 Siemens AG, 1000 Berlin und 8000 München Circuit arrangement for monitoring the occurrence of an alarm signal on an alarm line
DE3346527A1 (en) * 1983-12-22 1985-07-04 Siemens AG, 1000 Berlin und 8000 München METHOD AND ARRANGEMENT FOR THE FAULT-SAFE ALARM EVALUATION OF A DETECTING LINE OF A DANGER DETECTING SYSTEM

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0562960A1 (en) * 1992-03-27 1993-09-29 Cegelec Surveillance and alarm device for monitoring and control system
FR2689279A1 (en) * 1992-03-27 1993-10-01 Cegelec Monitoring and alarm device for control / command installation.

Also Published As

Publication number Publication date
DZ1500A1 (en) 2004-09-13
ATE142809T1 (en) 1996-09-15
EP0456080A3 (en) 1993-06-16
ES2094167T3 (en) 1997-01-16
ATA104690A (en) 1994-06-15
MA22148A1 (en) 1991-12-31
AT398859B (en) 1995-02-27
TNSN91034A1 (en) 1992-10-25
DK0456080T3 (en) 1997-02-17
EP0456080B1 (en) 1996-09-11
GR3021921T3 (en) 1997-03-31
DE59108160D1 (en) 1996-10-17

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