US3500314A - Vehicle signal control circuitry - Google Patents

Vehicle signal control circuitry Download PDF

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Publication number
US3500314A
US3500314A US626213A US3500314DA US3500314A US 3500314 A US3500314 A US 3500314A US 626213 A US626213 A US 626213A US 3500314D A US3500314D A US 3500314DA US 3500314 A US3500314 A US 3500314A
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US
United States
Prior art keywords
contact
lamps
circuits
controlled
signal
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
Application number
US626213A
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English (en)
Inventor
Jean Pineau
Francois Peroy
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.)
Renault SA
Original Assignee
Renault SA
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 Renault SA filed Critical Renault SA
Application granted granted Critical
Publication of US3500314A publication Critical patent/US3500314A/en
Anticipated expiration legal-status Critical
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    • 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
    • H05B39/00—Circuit arrangements or apparatus for operating incandescent light sources
    • H05B39/10—Circuits providing for substitution of the light source in case of its failure
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B5/00—Visible signalling systems, e.g. personal calling systems, remote indication of seats occupied
    • G08B5/22—Visible signalling systems, e.g. personal calling systems, remote indication of seats occupied using electric transmission; using electromagnetic transmission
    • G08B5/36—Visible signalling systems, e.g. personal calling systems, remote indication of seats occupied using electric transmission; using electromagnetic transmission using visible light sources
    • 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
    • H05B47/10—Controlling the light source

Definitions

  • a device for controlling a plurality of elements, circuits or the like comprising a plurality of branch circuits connected in parallel to the terminals of a source of unidirectional current.
  • Each branch circuit comprises two component elements in series, namely, a signal means and a contact responsive to one of the elements to be controlled.
  • At least two signal means are put in parallel by connecting each conductor common to the two component elements of one of said branch circuits through a unidirectional conducting element disposed in the passing direction, to the same point, and that said common point is connected to the other terminal of the source of current through an auxiliary contact.
  • This invention relates to the control of circuits by a same or different number of signal means, and is concerned more particularly with devices wherein the combination of said signal means with unidirectional conducting elements permits identifying the faulty circuit, if any.
  • this element permits the collective operation of all the lamps connected to said common point, and the separate operation of each lamp only if the contact directly associated therewith is closed.
  • This device may be roughly considered as affording the individual operation of a signal lamp within the interdependence of its collective operation.
  • a device for controlling a plurality of elements, circuits or apparatus, comprises, in parallel relationship to the terminals of unidirectional source of current, branch circuits each comprising two component elements disposed in series, one signal means and a contact.
  • the contact is responsive to one of said elements to be controlled.
  • the device is characterised in that at least two signal means are connected in parallel by connecting the conductors already connecting these signal means to the contact of their branch circuit, through a unidirectional conducting element disposed in the passing direction, to a same common point, and that said last-named common point is connected to the other ice terminal of the source of current through an auxiliary contact.
  • the contacts 5 and 6 control circuits in which only a particularly exceptional failure can close the contacts to light lamp 3 or 4.
  • the parameters to be controlled may be for example the temperature of the fluid in the cooling system of an internal combustion engine, the level of a liquid in a tank, or the thickness of brake linings. Contacts 5 and 6 close when the two parameters respectively controlled thereby exceed their preset or predetermined limit.
  • contact 9 is closed initially by actuating the switch 2, and opens only when the circuit to be controlled is operating, this contact 9 being reclosed only in case of faulty operation of said circuit.
  • This arrangement is applicable for example to the oil-pressure gauge of an internal combustion engine.
  • a failure originates in the circuit controlled by contact 9, so that both lamps 3 and 4 are lighted, as the current flows through the diodes 7 and 8 disposed in the passing direction.
  • the semi-conductors 7 and 8 are either independent and consists of standard diodes, or integrated in a common case comprising a semi-conductor disk constituting a common base having on its free surface two alloy zones bounded in relation to each other, constituting two separate emitters and each provided with a connecting conductor.
  • This device is advantageous in that it permits controlling three parameters by means of only two lamps. The only uncertainty would result, most improbably, from a simultaneous failure occurring in the two circuits controlled by said contacts 5 and 6, thus closing these contacts and lighting both lamps 3 and 4 simultaneously, and closing contact 9.
  • This device is also advantageous in that it permits verifying the proper condition of signal lamps likely to be lighted only in the case of an extremely rare failure, which, in the case of an automotive vehicle, constitutes a complementary safety element.
  • n of parameters may be controlled by means of (rv1) lamps connected in series, each lamp being connected to one of the (n1) contacts similar to contacts 5 and 6 of the above-described example: then each lamp is connected through a diode to one point then common to the (n1) lamps, by utilizing (n-1) diodes in the passing direction and connecting said common point to the other terminal of the source of direct or rectified current through a contact of same type as contact 9; under these conditions, all the lamps of the device can be vertified automatically and simultaneously.
  • the simultaneous vertification of all the lamps may be made by substituting for the contact S! a fugitive contact whereby the desired contact can be established at any time, notably each time the device is started.
  • the checking can 'be applied to only one fraction of the signal lamps; for example, those performing the control functions considered as essential for the proper operation of the controlled apparatus or equipmeit; in this case, the
  • tactors may also be of the relay type without contacts,
  • a single lamp may be connected through different diodes to a plurality of common points, with one contact associated with each point.
  • the diodes may be connected through different diodes to a plurality of common points, with one contact associated with each point.
  • number of signal lamps to be utilized may be reduced in comparison with the number of parameters to be controlled, by resorting to diflerent combinations of lamp lighting circuits for identifying a failure, the lamps being lighted not only separately but if desired by pairs.
  • a device for controlling a plurality of elements, circuits and the like, in particular on automotive vehicles comprising a plurality of alarm circuits arranged in parallel with the terminals of a source of unidirectional current, each said alarm circuit having a signal lamp and a switch closing in response to any defect in the element to be controlled, an additional parallel circuit connected to each of the alarm circuits by means of diodes connected to points located between the lamps and the switches of said alarm circuits in the direction passing towards said additional circuit, which additional circuit also comprises a signal switch normally closed upon being placed in operation and for a short time after placing the entire device in operation, and a main switch arranged between the current source and a terminal common to all of said parallel circuits so that the closing of said main switch lights up all the lamps which then are put out by the opening of the additional switch, the various alarm circuits being then ready for operation.

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • General Physics & Mathematics (AREA)
  • Lighting Device Outwards From Vehicle And Optical Signal (AREA)
  • Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
US626213A 1966-04-08 1967-03-27 Vehicle signal control circuitry Expired - Lifetime US3500314A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR57161A FR1482125A (fr) 1966-04-08 1966-04-08 Dispositif de contrôle de plusieurs éléments, circuits ou appareils

Publications (1)

Publication Number Publication Date
US3500314A true US3500314A (en) 1970-03-10

Family

ID=8605974

Family Applications (1)

Application Number Title Priority Date Filing Date
US626213A Expired - Lifetime US3500314A (en) 1966-04-08 1967-03-27 Vehicle signal control circuitry

Country Status (5)

Country Link
US (1) US3500314A (OSRAM)
BE (1) BE695873A (OSRAM)
DE (1) DE1613865B2 (OSRAM)
FR (1) FR1482125A (OSRAM)
GB (1) GB1167649A (OSRAM)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2621661A1 (de) * 1976-05-15 1977-11-24 Bayerische Motoren Werke Ag Anzeigevorrichtung

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3349387A (en) * 1962-01-23 1967-10-24 Commissariat Energie Atomique Display panel having selectively lighted areas for representing a figure from zero to nine

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3349387A (en) * 1962-01-23 1967-10-24 Commissariat Energie Atomique Display panel having selectively lighted areas for representing a figure from zero to nine

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2621661A1 (de) * 1976-05-15 1977-11-24 Bayerische Motoren Werke Ag Anzeigevorrichtung

Also Published As

Publication number Publication date
DE1613865A1 (de) 1970-05-14
BE695873A (OSRAM) 1967-09-01
GB1167649A (en) 1969-10-15
FR1482125A (fr) 1967-05-26
DE1613865B2 (de) 1972-12-28

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