DE2026315C

DE2026315C - Monitoring circuit

Info

Publication number: DE2026315C
Authority: DE
Inventors: Hansmartin Dipl Ing 2000 Norderstedt Storrle
Original assignee: Philips Patentverwaltung GmbH
Current assignee: Philips Intellectual Property and Standards GmbH
Publication date: 1972-10-26

Description

65 und eines Widerstands zu legen. Dabei ist der Kondensator jedoch über einen weiteren Widerstand mit65 and a resistance to lay. In this case, however, the capacitor is connected via a further resistor

Die J-riindiing bezieht sich aul eine Überwachungs- der positiven Spannungsklemme verbunden. Auch schaltung für mittels eines elektronisch gesteuerten läßt sich bei dieser bekannten Einrichtung im FalleThe J-ring refers to a monitoring device connected to the positive voltage terminal. Also circuit for means of an electronically controlled can be in this known device in the case

einer Störung aus dem Ausgangskreis ein Signal zur stehende Spannung unmittelbar aus dem Teilerver-a fault from the output circuit, a signal for the standing voltage directly from the divider

Anzeige dieser Störung entnehmen hältnis zwischen dem Widerstands einerseits undDisplay of this disturbance inferred ratio between the resistance on the one hand and

Dieses Signal kann z. B. in einer Verdoppelung der dem augenblicklichen Widerstand der Lampen 1This signal can e.g. B. in a doubling of the current resistance of the lamps 1

Unterbrecherfrequenz bestehen, wozu der Kollektor bzw. 1' andererseits ergibt Am Widerstand 5 stelltInterrupter frequency exist, for which the collector or 1 'on the other hand results at the resistor 5 represents

des Transistors mit der elektronischen Steuerschal- 5 sich deshalb eine kleinere oder größere Spannung ein,of the transistor with the electronic control switch 5 therefore a smaller or larger voltage,

tung des Unterbrecherkontakts verbunden ist. Eine je nachdem, ob der Strom durch beide Lampen oderdirection of the breaker contact is connected. One depending on whether the current through both lamps or

andere Möglichkeit zur Signalgabe besteht darin, den — weil eine defekt ist — nur durch eine LampeAnother possibility for signaling is that - because one is defective - only by a lamp

Kollektor mit der negativen Spannungsklemme über fließen kann. .Collector with the negative voltage terminal can overflow. .

eine Kontrollampe zu verbinden. Wird das Emitterpotential des Transistors 10^durchto connect a control lamp. If the emitter potential of the transistor 10 ^ through

An Hand der Zeichnung wird die Erfindung näher io die Widerstände 11 und 12 gegenüber dem Verbm-With reference to the drawing, the invention is explained in more detail io the resistors 11 and 12 with respect to the connection

beschrieben. Darin zeigt dungspunkt D des Widerstands 5 und des Kondensa-described. It shows the connection point D of the resistor 5 and the capacitor

F ig. 1 ein-Ausführungsbeispiel der erfindungsge- tors 6 derart angehoben, daß nur dann ein Mrom inFig. 1 an exemplary embodiment of the invention 6 raised in such a way that only then a Mrom in

mäßen Überwachungsschaltung beim Fahrtrichtungs- die Basis des Transistors 10 fließen kann, wenn beidemoderate monitoring circuit in the direction of travel, the base of transistor 10 can flow when both

änderungsanzeiger eines Kraftfahrzeugs und Lampen 1 und 1' Strom führen, so fließt auch nurChange indicator of a motor vehicle and lamps 1 and 1 'carry current, so only flows

Fig. 2 eine Abwandlung der in Fig. 1 gezeigten i₅ dann im Transistor 10 ein Kollektorstrom, der durcnFig. 2 shows a modification of the i ₅ shown in Fig. 1 then a collector current in transistor 10, which durcn

Schaltung. sein Ausbleiben zu Beginn der Dunkelphase den De-Circuit. his absence at the beginning of the dark phase

Fahrtrichlungsanzejgelampen 1 ozw. 1' sind über fekt wenigstens einer Lampe anzeigt, einen Fahrtrichtungsanzeigeschalter 2 und einen Durch den in Reihe zum Kondensator 6 liegenden Unterbrecherkontakt3 an eine Spannungsquelle U Widerstand 18, in Fig. 2, der den internen Serieneines Kraftfahrzeugs angeschlossen. Eine elektro- ao widerstand des Kondensators repräsentiert wird der nische Steuerschaltung 7 betätigt ein den Unter- Absolutwert der den Transistor 10 steuernden spanbrecherkontakt 3 tragendes Relais 9 periodisch, üb- nung zwischen den Punkten E und B der BrucKe aus licherweise 90mal pro Sekunde. Parallel zum Unter- den Widerständen 11 und 12 einerseits sowie dem brecherkontakt 3 liegt die Reihenschaltung eines Widerstand 5 und dem Innenwiderstand urn"¹" Kondensators 6 und eines Widerstands 5. Dabei liegt a₅ pen 1 bzw. 1' andererseits mit zunehmendem widerder Kondensator an dem mit der positiven Span- stand 18 kleiner, so daß an Stelle des Iransistors μ nungsklemme verbundenen Kontakt. Parallel zu dem ein Differenzverstärker 13 verwendet werden muli. Widerstand 5 liegt über einen weiteren Widerstand Der normalerweise nichtlineare Zusammenhang 11 die Basis-Emitter-Strecke eines Transistors 10, zwischen Strom und Spannung der Lampen l bzw. ι wobei die Basis mit dem Anschluß 8 des Wider- 30 bewirkt eine überproportionale Abnahme der Meuerstands 5 verbunden ist. Der Kollektor des Transistors spannung zwischen den Punkten E und ϋ bei v-r-10 ist mit der elektronischen Steuerschaltung 7 ver- ringerung der Versorgungsspannung U, die durcn eine bunden. Außerdem ist der Emitter des Transistors 10 Reihen- und/oder Parallelschaltung einer geeigneten über einen Widerstand 12 mit der negativen Klemme Kombination aus Halbleiterbauelementen, msbesonder Spannungsquelle U verbunden. 35 dere Transistoren und Dioden, und Widerstanden zu Wird der Schalter 2 geschlossen, so enthält die dem Widerstand 11 und/oder dem Widerstand IZ teil-Steuerschaltung 7 ein Anlaufsignal und schließt über weise oder ganz beseitigt werden kann das Relais9 den Kontakt3, so daß ein Strom durch Wenn, wie es Fig. 2 zeigt, zusatzl.che Kontrolldie Lampen 1 bzw. 1' fließen kann. Nach einer von lampen 19 und/oder 20 verwendet werden wird das der Steuerschaltung 7 vorgegebenen Zeit öffnet der 40 Brückengleichgewicht gestört. Dabei laßt sich der sto-Kontakt3 wieder, wodurch der Kurzschluß über den rende Einfluß der Kontrollampe 19 durch die EinWiderstand 5 und den Kondensator 6 aufgehoben fügung eines zusätzlichen Widerstands Zl zwiscnen wird und sich der Kondensator 6 über die Lampen 1 dem Punkt E der Schaltung und dem Pluspol der bzw. 1' und den Widerstand 5 aufzuladen beginnt. Stromquelle 4 beseitigen, wahrend der binnuli der Im ersten Augenblick ist die Spannung am Konden- 45 zusätzlichen Kontrollampe 20 durch eine Anpassung satoro Null, so daß sich die am Widerstands an- der Widerstände 5 oder 12 behoben werden kann.Fahrtrichlungsanzejgelampen 1 ozw. 1 'are via at least one lamp, a direction indicator switch 2 and a breaker contact 3 connected in series to the capacitor 6 to a voltage source U resistor 18, in Fig. 2, which is connected to the internal series of a motor vehicle. An electrical resistance of the capacitor is represented, the niche control circuit 7 actuates a relay 9 carrying the sub-absolute value of the transistor 10 controlling the chip breaker contact 3 periodically, exercise between points E and B of the bridge from 90 times per second. Parallel to the resistors 11 and 12 on the one hand and the breaker contact 3 there is a series connection of a resistor 5 and the internal resistance around a " ¹ " capacitor 6 and a resistor 5. On the _{other hand, a 5} pen 1 or 1 'is applied as the resistance increases the one with the positive span 18 smaller, so that instead of the transistor μ voltage terminal connected contact. In parallel with a differential amplifier 13 are used muli. Resistor 5 lies across a further resistor. The normally non-linear relationship 11, the base-emitter path of a transistor 10, between the current and voltage of the lamps l or ι where the base with the terminal 8 of the resistor 30 causes a disproportionate decrease in the level 5 connected is. The collector of the transistor voltage between the points E and ϋ at vr-10 is with the electronic control circuit 7 reducing the supply voltage U, which is tied by a. In addition, the emitter of the transistor 10 is connected in series and / or in parallel with a suitable combination of semiconductor components, including a special voltage source U , via a resistor 12. 35 of their transistors and diodes, and resistors too. If the switch 2 is closed, the resistor 11 and / or the resistor IZ part control circuit 7 contains a start-up signal and closes the relay9 contact3, so that a Current through If, as Fig. 2 shows, additional control lamps 1 or 1 'can flow. After one of lamps 19 and / or 20 has been used, the time predetermined for the control circuit 7 opens and the bridge equilibrium is disturbed. The sto-contact 3 can be opened again, whereby the short-circuit is canceled by the on-resistance 5 and the capacitor 6 through the influence of the control lamp 19 and the addition of an additional resistor Zl is interposed and the capacitor 6 is connected via the lamps 1 to the point E of the circuit and the positive pole of the or 1 'and the resistor 5 begins to charge. Eliminate current source 4 during the binnuli of At first the voltage on the capacitor is 45 additional control lamp 20 by adjusting satoro zero, so that the voltage on the resistor on the resistors 5 or 12 can be eliminated.

Hierzu 1 Blatt Zeichnungen1 sheet of drawings

Claims

Interrupter contact periodically switched on and off. Such a circuit can, for. B. for over-

1. Monitoring circuit for by means of a monitoring of the direction indicator lamps on the driving electronics controlled interrupter contact 5 testify or the warning lamps on sea or aviation periodically direct current generators that can be switched on and off are used.

fed consumers, thereby marked A failure of one or more lamps can / u

indicates that parallel to the interrupter con - a danger to other vehicles lead and should! clock (3) a series connection of a capacitor can therefore be displayed to the driver of the vehicle. (6) and a resistor (5) is connected that ίο In the magazine "Funkschau", issue 9/1968, the capacitor (6) directly on the one with the p. 694, is connected as an "electronic direction indicator" positive voltage terminal The single-ended monitoring circuit that has become known is that the resistor (5) is described in such a way that the resistor (5) is described in series so that the gap differences occurring on it when the lower to the electronically controlled breaker contact (3) is opened a low-resistance resistor is connected to the ren. ~ between normal operation and when at least one lamp fails, a chip-disrupted operation reaches a maximum and the voltage change occurs through the, via a VerBasis-Emitter circuit of a transistor (10) or more controlled, a control lamp goes out and thus the input circuit of a differential amplifier indicates the fault that has occurred,
art controls that from its collector circuit or 20 monitoring circuits are also known, output circuit with faulty operation a signal can be derived parallel to the electronically controlled to display the fault. Breaker contact a resistor is connected,

2. Monitoring circuit according to claim 1, characterized in that, when the interrupter contact is open, the lamp from the collector with the resistance of the parallel flashing circuit of the transistor (10) or the amplifier »5 forms a voltage divider to whose connection (13 ) derivable signal for fault indication causes a tie point when the lamp changes, increasing the interrupter frequency. Resistance, e.g. B. with an increase in resistance

3. Monitoring circuit according to claim 1, following the failure of a lamp, a voltage change thereby characterized in that that occurs from the collection opposite a fixed potential, which in gate circuit of the transistor (10) or the amplifier 30 is displayed in a suitable manner.

(13) derivable signal the lighting up of a signaling device, in particular

Warning lamp causes. for measuring and recording devices, known (German

4. Monitoring circuit according to one of An Auslegeschrift 1 221 929), in which two transistors claims 1 to 3, characterized in that the via a series connection of a resistor and resistor (5) is dimensioned such that the wire 35 of a capacitor together are coupled. Dakung any existing series resistance at can be derived from the output circuit of the second transistor (18) of the capacitor (6) and a control signal to indicate a fault,
lamp (19 or 20) is taken into account. In these known monitoring circuits

5. Monitoring circuit according to one of the on arises in the parallel or in series with sub-claims 1 to 4, characterized in that at 40 breaker contact resistance a large use of a power between the positive terminal, and it is necessary to switch the voltage and a direction indicator (2) switching voltage changes occurring to the control lamp (19) an additional resistance and an additional amplifier board (21) between the emitter (E) of the tran- watch.

sistor (10) or the output terminal (E) of the 45 By the inventive monitoring switching amplifier (13) and the positive terminal of the device, these disadvantages are eliminated, namely because the voltage source (U) is connected. by that parallel to the breaker contact a

6. Monitoring circuit according to one of the series connection of a capacitor and a contradiction 1 to 4, characterized in that it is connected to the state that the capacitor is used directly between the negative 50 bar to the one with the positive voltage terminal ver-terminal and one Direction indicator switch (2) is connected to the contact that the resistance control lamp (20) switched in such a way that the voltage difference between the transistor (10 ) or the output terminal (E) see proper operation and disturbed Bedcs amplifier (13) and the negative terminal 55 drove reached a maximum and the base-emitter voltage source (U) is switched. Circuit of a transistor or the input circuit of a

7. Monitoring circuit after one of the differential amplifier controls so that from its Proverbs 1 to 6, characterized in that in the collector circuit or output circuit with a disturbed row or a signal to indicate the fault can be derived parallel to one or both drives. stands (M or 12) active or passive half-60 It should be noted here that there is a in particular transistors or direction, in particular for measuring and recording devices, Diodes, alone or in connection with resistors, as they existed in German Auslegeschrift 1 221 929 are switched. is known, a series circuit of a capacitor in parallel with the breaker contact