EP0051854B1 - Schaltung zur Fehlermeldung bei einem über einer elektronischen Schalteinrichtung geschalteten Stromverbraucher - Google Patents

Schaltung zur Fehlermeldung bei einem über einer elektronischen Schalteinrichtung geschalteten Stromverbraucher Download PDF

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Publication number
EP0051854B1
EP0051854B1 EP81109507A EP81109507A EP0051854B1 EP 0051854 B1 EP0051854 B1 EP 0051854B1 EP 81109507 A EP81109507 A EP 81109507A EP 81109507 A EP81109507 A EP 81109507A EP 0051854 B1 EP0051854 B1 EP 0051854B1
Authority
EP
European Patent Office
Prior art keywords
circuit according
input
switching device
electronic switching
control line
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
Application number
EP81109507A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0051854A1 (de
Inventor
G. Dr. Dipl-Ing. Domorazek
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kabel Rheydt AG
Original Assignee
AEG Telefunken Kabelwerke AG
AEG Kabel AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by AEG Telefunken Kabelwerke AG, AEG Kabel AG filed Critical AEG Telefunken Kabelwerke AG
Publication of EP0051854A1 publication Critical patent/EP0051854A1/de
Application granted granted Critical
Publication of EP0051854B1 publication Critical patent/EP0051854B1/de
Expired legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B47/00—Circuit arrangements for operating light sources in general, i.e. where the type of light source is not relevant
    • H05B47/20—Responsive to malfunctions or to light source life; for protection

Definitions

  • the invention relates to a circuit according to the preamble of claim 1.
  • the error message takes place via a separate line to a display device common to numerous electricity consumers.
  • the invention has for its object to reduce the number of lines leading to a control center.
  • an incandescent lamp through which the current of the control line flows serves as a display element, which lights up when the current in the control line assumes increased values in the event of a fault.
  • the PTC characteristic of the incandescent lamp its resistance increases at the same time and causes a current limitation.
  • the increase in the current in the control line results from a special arrangement and switching of the electronic switching device and not as a result of a targeted control of the impedance of the control line via an error signal.
  • the known circuit is therefore not of general use and only enables the detection of a limited number of types of errors.
  • the invention has the advantage that the error message is sent via the control line, so that no separate message lines are required.
  • the series resistor 5, the window discriminator 7 and the indicator lamp 8 are combined in a display device 9, which is located in the area of the control center.
  • the electronic switching device 1 is assigned fault detectors 10 and 11, of which the fault detector 10 supplies a signal to the OR gate 12 in the event of a short circuit in the consumer, the fault detector 11 in the event of an interruption in the consumer circuit.
  • the output signal of the OR gate 12 which arises in the event of an error causes the switch 13 to be closed, which is preferably designed as a controllable semiconductor, but could also be a make contact of a relay actuated by the output signal of the OR gate 12.
  • the switch 13 forms a controllable impedance, which changes its resistance value from "zero" (closed) to "infinite” (open), although it would also be possible in the sense of the invention, for. B. using a switching transistor to cause a change in resistance between a first value that is greater than zero and a second value that is greater than the first but finite.
  • the difference in resistance causes the input resistance of the electronic switching device 1 to assume a lower value in the event of a fault, so that because of the then increased voltage drop across the series resistor 5, the input voltage at the window discriminator is also noticeably reduced.
  • the window discriminator 7 is designed in such a way that the input voltage, which is noticeably lower than the value U z, emits an output current for actuating the indicator lamp 8, which thus indicates the existence of an error.
  • the window discriminator causes an error display when its input voltage is greater than U z when z. B. the control line is faulty interrupted.
  • a ground short of the control line would be indicated anyway by the indicator lamp 8 lighting up, because then the input voltage at the window discriminator 7 is less than Uzist.
  • the input resistance to be measured between control line 14 and ground can of course also be changed as a function of the error in that switch 13 or a switching transistor controlled by the output signal of OR gate 12 is arranged in series in the control circuit. However, the switch would then have to be opened in the event of a fault, so that a voltage which is greater than U z is at the window discriminator is present, which then causes the indicator lamp 8 to light up.
  • a qualitative evaluation of the voltage present on the control line 14 behind the resistor 5 by means of the window discriminator 7 enables a selective determination of various types of errors.
  • a special simple display device 15 is shown in FIG. 2, in which errors are indicated by a light-emitting diode 16 through which the current of the control line flows.
  • the display device 15 can be used in conjunction with the electronic switching device 1 shown in FIG. 1, but then the Zener diode 6 is not required.
  • the switch 13 When the switch 13 is open, that is to say if there is no fault, a small current flows in the control line 14, which does not light up the LED 16.
  • the current is particularly low when transistor 2 is a VMOS transistor. If, in the event of an error, the OR gate 12 causes the switch 13 to close, or if the control line is short-circuited to the ground, a higher current flows which causes the light-emitting diode 16 to light up. With a circuit according to FIG. 2, however, the interruption of the control line 14 is not indicated.
  • FIG. 3 An extended circuit for additional monitoring of the functionality of the brake light switch 4 'of a motor vehicle is shown in FIG. 3.
  • An OR gate 17 is located between the window discriminator 7 and the indicator lamp 8, as a result of which the error display explained at the outset is not influenced via the first input 18.
  • the second input 19 of the OR gate is connected to the output of an inverter 20, the input of which is connected on the one hand with high resistance (resistor 21) to the positive pole of the voltage source and on the other hand via a control switch 22 which can be actuated by the pressure of the brake fluid and via an AND provided for potential isolation -Gate 23 is connected to the connecting line between the switch 4 'and the resistor 5.
  • switch 4 When switch 4 'is open, this connecting line has ground potential, provided switch 22 is also open. At the input of the inverter there is an H signal which has been converted into an L signal at 19. The indicator lamp 8 is de-energized.
  • the brake switch 4 If the foot brake is pressed, the brake switch 4 'is closed. An H signal is present at AND gate 23. If the control switch 22 speaks after the build-up of the brake pressure in the master cylinder, there is an H signal at the input of the inverter 20 and an L signal at the input 19 of the OR gate 17, so that the display 8 remains de-energized.
  • the inverter 20 receives an L signal after the control switch 22 has responded. An H signal is then present at its output, as a result of which error lamp 8 responds.

Landscapes

  • Valves And Accessory Devices For Braking Systems (AREA)
  • Lighting Device Outwards From Vehicle And Optical Signal (AREA)
  • Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
  • Testing Electric Properties And Detecting Electric Faults (AREA)
  • Circuit Arrangement For Electric Light Sources In General (AREA)
  • Audible And Visible Signals (AREA)
EP81109507A 1980-11-11 1981-11-04 Schaltung zur Fehlermeldung bei einem über einer elektronischen Schalteinrichtung geschalteten Stromverbraucher Expired EP0051854B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3042415 1980-11-11
DE3042415A DE3042415C2 (de) 1980-11-11 1980-11-11 Schaltung zur Fehlermeldung bei einem über eine elektronische Schalteinrichtung geschalteten Stromverbraucher

Publications (2)

Publication Number Publication Date
EP0051854A1 EP0051854A1 (de) 1982-05-19
EP0051854B1 true EP0051854B1 (de) 1985-10-02

Family

ID=6116432

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81109507A Expired EP0051854B1 (de) 1980-11-11 1981-11-04 Schaltung zur Fehlermeldung bei einem über einer elektronischen Schalteinrichtung geschalteten Stromverbraucher

Country Status (5)

Country Link
US (1) US4584555A (enrdf_load_stackoverflow)
EP (1) EP0051854B1 (enrdf_load_stackoverflow)
JP (1) JPH023469B2 (enrdf_load_stackoverflow)
DE (2) DE3042415C2 (enrdf_load_stackoverflow)
WO (1) WO1982001801A1 (enrdf_load_stackoverflow)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3313712A1 (de) * 1983-04-15 1984-10-18 AEG-Telefunken Kabelwerke AG, Rheydt, 4050 Mönchengladbach Schaltung zur fehlermeldung bei einem ueber eine steuerbare schalteinrichtung geschalteten stromverbraucher
US4654645A (en) * 1984-09-22 1987-03-31 Sharp Kabushiki Kaisha Electric element breakdown detector
DE3815604A1 (de) * 1988-05-06 1989-11-23 Texas Instruments Deutschland Treiberschaltung
FR2633140B1 (fr) * 1988-06-15 1996-04-26 Forclum Force Lumiere Elect Procede et systeme de surveillance des defaillances d'au moins une source lumineuse
US4884034A (en) * 1989-01-03 1989-11-28 Hermilo Guzman Ground fault detector and locator
GB2228091B (en) * 1989-02-08 1992-09-23 Westinghouse Brake & Signal Current monitoring
US4970508A (en) * 1989-06-05 1990-11-13 Webster Iii Daniel T System for monitoring switch locations
US5124616A (en) * 1990-11-05 1992-06-23 Motorola, Inc. Circuit for driving a load and for producing a signal indicative of the condition of the load
DE10107578A1 (de) 2001-02-17 2002-08-29 Hella Kg Hueck & Co Lichtanlage für Kraftfahrzeuge
GB0204836D0 (en) * 2002-03-01 2002-04-17 Tapeswitch Ltd Lamp monitor and lamp
DE102004045435B4 (de) * 2004-09-18 2008-07-31 Man Nutzfahrzeuge Ag Überwachung der Funktion von Glühlampen oder LED-Leuchten in Kraftfahrzeugen
US7301447B2 (en) 2005-04-13 2007-11-27 Gm Global Technology Operations, Inc. LED turn signal and error detecting method
US9705337B2 (en) * 2015-09-28 2017-07-11 Juniper Networks, Inc. Mitigating an effect of a downstream failure in an automatic transfer switching system

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2203426A1 (de) * 1971-01-28 1972-08-17 Nippon Denso Co Lampenausfalldetektorsystem

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Publication number Priority date Publication date Assignee Title
GB1009433A (en) * 1961-11-21 1965-11-10 Reginald Thomas Hamilton Improvements relating to hydraulic braking systems
DE1605970C2 (de) * 1967-09-07 1974-08-15 Girling Ltd., Tyseley, Birmingham (Grossbritannien) Warnanlage für ein druckmittelbetätigbares Kraftfahrzeug-Bremssystem
US3591832A (en) * 1970-05-18 1971-07-06 Siemens Ag Electronic overload protection circuits
US3654518A (en) * 1970-09-17 1972-04-04 Caterpillar Tractor Co Fast acting solid state circuit breaker
GB1287074A (en) * 1971-01-28 1972-08-31 Ford Motor Co Electrical wiring harness
DE2352496C3 (de) * 1973-10-19 1981-08-13 Robert Bosch Gmbh, 7000 Stuttgart Kontrolleinrichtung für Wagenzüge, bei denen wenigstens der Zugwagen mit einem Antiblockierregelsystem versehen ist
DE2415157A1 (de) 1974-03-29 1975-10-09 Bosch Elektronik Gmbh Schalt- und verzoegerungseinrichtung
US3937987A (en) 1974-04-11 1976-02-10 Rca Corporation Threshold detector
DE2519752B1 (de) * 1975-05-02 1976-08-12 Konstantin Zarkadas Ueberwachungsschaltung fuer elektrische verbraucher
DE2649034C2 (de) * 1976-10-28 1985-01-24 Kabelwerke Reinshagen Gmbh, 5600 Wuppertal Schaltungsanordnung für einen Kabelsatz sowie ihre Verwendung im Kraftfahrzeug
DE2741054A1 (de) 1977-03-30 1979-03-22 Riba Jutta Kontrollgeraet zur ueberwachung von gluehlampen
GB1592167A (en) 1978-01-04 1981-07-01 Transport Secretary Of State F Apparatus for monitoring signal lamps
DD135021A1 (de) * 1978-03-17 1979-04-04 Guenter Turinsky Schwellwertschalter
DE2842629C2 (de) * 1978-09-29 1980-07-17 Siemens Ag, 1000 Berlin Und 88000 Muenchen Einrichtung zum steuerbaren Verbinden eines Anschlußpunktes über einen Lastwiderstand mit einem Lastpotential
DE2854313C2 (de) * 1978-12-15 1980-08-14 Siemens Ag, 1000 Berlin Und 8000 Muenchen Überlastungsschutzanordnung für Schalttransistoren
FR2452229A1 (fr) 1979-03-19 1980-10-17 Jaeger Detecteur de defaut de feux de stop de vehicules
FR2482800A1 (fr) * 1980-05-14 1981-11-20 Thomson Csf Mat Tel Dispositif de protection d'un amplificateur de puissance, et emetteur comportant un tel dispositif

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2203426A1 (de) * 1971-01-28 1972-08-17 Nippon Denso Co Lampenausfalldetektorsystem

Also Published As

Publication number Publication date
EP0051854A1 (de) 1982-05-19
DE3172547D1 (en) 1985-11-07
WO1982001801A1 (en) 1982-05-27
JPH023469B2 (enrdf_load_stackoverflow) 1990-01-23
JPS57501976A (enrdf_load_stackoverflow) 1982-11-04
DE3042415A1 (de) 1982-07-29
DE3042415C2 (de) 1990-08-02
US4584555A (en) 1986-04-22

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