EP0471891A2 - Circuit pour la commande d'un groupe de relais - Google Patents

Circuit pour la commande d'un groupe de relais Download PDF

Info

Publication number
EP0471891A2
EP0471891A2 EP90124625A EP90124625A EP0471891A2 EP 0471891 A2 EP0471891 A2 EP 0471891A2 EP 90124625 A EP90124625 A EP 90124625A EP 90124625 A EP90124625 A EP 90124625A EP 0471891 A2 EP0471891 A2 EP 0471891A2
Authority
EP
European Patent Office
Prior art keywords
voltage
circuit arrangement
current
relays
arrangement according
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.)
Withdrawn
Application number
EP90124625A
Other languages
German (de)
English (en)
Other versions
EP0471891A3 (en
Inventor
Richard Siepmann
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.)
Siemens AG
Original Assignee
Siemens 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 Siemens AG filed Critical Siemens AG
Publication of EP0471891A2 publication Critical patent/EP0471891A2/fr
Publication of EP0471891A3 publication Critical patent/EP0471891A3/de
Withdrawn legal-status Critical Current

Links

Images

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H47/00—Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current
    • H01H47/02—Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current for modifying the operation of the relay
    • H01H47/04—Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current for modifying the operation of the relay for holding armature in attracted position, e.g. when initial energising circuit is interrupted; for maintaining armature in attracted position, e.g. with reduced energising current

Definitions

  • the invention relates to a circuit arrangement for the controlled actuation of a group of relays which can be operated optionally at a common actuation voltage.
  • DE 33 31 678 C2 does address a circuit arrangement for controlling a plurality of relays which can optionally be operated in parallel.
  • a separate control module is also required for each relay, which applies the pick-up pulses and hold pulse sequences generated in a common control device to the respective relay winding. This also results in a considerable amount of circuitry, which increases with each additional relay used.
  • the aim of the invention is to provide a circuit arrangement of the type mentioned at the outset which supplies a group of individually connectable relays with a response voltage or a reduced holding voltage, as required, with relatively little circuit complexity.
  • the circuit complexity should be independent of the number of relays operated on it.
  • the invention thus avoids polling each individual relay and determining its operating state for an individual supply with response or holding voltage. This also eliminates the need for sensor lines between the control device and the relays used in different locations. Rather, one measures only the total current through the windings connected in parallel and takes advantage of the knowledge that the connection of an additional relay in each case results in a sudden increase in current in the common supply line. If such a current increase can be determined, the control voltage on the common supply line is briefly increased and in this way also helps the newly switched-on relay to achieve the required pickup excitation. The fact that the other relays receive the response voltage again unnecessarily for a short time is of little importance compared to the savings on control lines and circuit elements.
  • the operating voltage can generally be a DC voltage with different values for response voltage and holding voltage. However, it can also be a clocked voltage in a manner known per se, the difference between response voltage and operating voltage being able to exist in the amplitude or in the duty cycle or also in both.
  • the current measuring device contains a differentiating amplifier which taps the voltage across a resistor connected in series in the common power supply circuit of the relay windings and generates the control signal when the current rises.
  • the current measuring device can also have a transistor which is switched into the power supply circuit of the relay windings and which can be readjusted to a constant voltage drop with a delay, a readjustment signal being able to be derived from a temporary voltage rise and from this the control signal for voltage regulation can be derived. This embodiment is particularly advantageous if a very Large number of relays should be monitored, since the total current and thus the total number of relays switched on has no influence on the size of the readjustment signal.
  • the time constant of the current measuring device should be selected so that the current increase when a relay is switched on can also be recognized if a current drop occurs at the same time as another relay is switched off.
  • a usable control signal can also be obtained in this case, since when a relay is switched off, the current drops faster than it rises when a relay is switched on, so that one must only take the short-term current drop into account by selecting the time constant.
  • the current control according to the invention for a relay group saves sensor lines for the relays arranged individually at different locations.
  • Another advantage of the invention is that the number of relays to be controlled does not have to be specified when using and dimensioning the circuit.
  • FIG. 1 shows a circuit arrangement in which an operating voltage U B , for example the battery voltage of a motor vehicle, is to be regulated so that a group with relays RL1 to RLn which can be switched on and off independently of one another switches on safely, but does not have an unnecessarily high level in the holding state Receives electricity.
  • the individual relays are switched on individually via switches S1 to Sn as required.
  • a voltage regulator VC is provided, which applies a regulated voltage U R to the relay group.
  • This voltage U R is generally a relatively low holding voltage which is sufficient for the holding excitation of the relays.
  • this control voltage U R is briefly increased, which is indicated by the pulse va.
  • a current measuring device which uses a series resistor (shunt) RS according to FIG. 1.
  • the voltage is tapped at this resistor RS via the resistors R1 and R2 and the decoupling capacitor C1 and fed to the operational amplifier OP1 connected as a voltage follower with the feedback resistor R3.
  • a voltage change across the resistor RS which occurs when the current increases, generates a pulse i at the output of the operational amplifier OP1, which pulse is tapped via the diode D1 and fed to the voltage regulator VC.
  • the resistors R4 and R5 serve for feedback at the voltage regulator or as a ground resistance for the input of the voltage regulator.
  • FIG. 2 A further possibility for detecting a current rise when a relay is switched on is shown in FIG. 2.
  • a field effect transistor FET is switched on with its source-drain path.
  • This FET is adjusted to a constant voltage by the operational amplifier OP2 via the resistors R11 to R15.
  • the resistance of the field effect transistor applies An increase in current in the excitation circuit causes a brief rise in voltage at the field effect transistor, which is, however, limited by the parallel diode D11.
  • This voltage rise is then corrected by the operational amplifier OP2 by applying a readjustment signal via R14 to the gate electrode of the field effect transistor.
  • the readjustment signal is supplied as a pulse i to a flip-flop FF via the capacitor C12 and is supplied from it as a control signal to the voltage control VC.
  • a capacitor C11 is connected in parallel to the source-gate path of the field-effect transistor, which delays the readjustment and thus enables a sufficiently long pulse for the generation of the control signal.
  • a voltage rise can always be determined on the field effect transistor, which is largely independent of the total size of the excitation current, while the measurement value is dependent on the total current when measuring on the resistor RS from FIG.
  • the circuit according to FIG. 2 is therefore particularly advantageously suitable for applications with a large number and many different relays that can be connected.
  • FIG. 3 shows the current and voltage curve in the control of a relay group according to the invention.
  • Curve 3a shows the current profile over time t. It is assumed that a relay winding is switched on at times t1, t2 and t3. The current then describes the curve shown, with an increase taking place in curve section a is recognized by the current measuring device according to FIG. 1 or 2.
  • FIG. 3b in response to this current increase at times t11, t21 and t31, the voltage U R is raised from the lower holding voltage U h to the higher response voltage U a , for example from 7 V to 12 V. This also has a further increase in current, as can be seen in FIG. 3a in the respective curve section b. After a predetermined pulse duration, the voltage is reduced again to the holding voltage U h , as a result of which the current also decreases again (curve section c in FIG. 3a).

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Relay Circuits (AREA)
  • Medicines That Contain Protein Lipid Enzymes And Other Medicines (AREA)
EP19900124625 1990-08-21 1990-12-18 Circuit arrangement for controlling a group of relays Withdrawn EP0471891A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4026427 1990-08-21
DE4026427A DE4026427C1 (fr) 1990-08-21 1990-08-21

Publications (2)

Publication Number Publication Date
EP0471891A2 true EP0471891A2 (fr) 1992-02-26
EP0471891A3 EP0471891A3 (en) 1992-08-12

Family

ID=6412629

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19900124625 Withdrawn EP0471891A3 (en) 1990-08-21 1990-12-18 Circuit arrangement for controlling a group of relays

Country Status (5)

Country Link
US (1) US5317475A (fr)
EP (1) EP0471891A3 (fr)
JP (1) JPH04315723A (fr)
CA (1) CA2049469A1 (fr)
DE (1) DE4026427C1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1965403A2 (fr) * 2007-01-15 2008-09-03 Yazaki North America, Inc. Pilote de relais à courant constant doté d'une résistance de détection contrôlée
CN109713760A (zh) * 2018-10-24 2019-05-03 深圳市蓝禾技术有限公司 一种放电方法、充电设备及计算机存储介质

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5422780A (en) * 1992-12-22 1995-06-06 The Lee Company Solenoid drive circuit
DE4332995C1 (de) * 1993-09-28 1994-10-20 Siemens Ag Verfahren zur Ansteuerung von parallel angeordneten Relais
DE19643125C2 (de) * 1996-10-18 2003-04-10 Siedle & Soehne S Türsprechsystem
US6115228A (en) * 1997-12-31 2000-09-05 Alcatel Usa Sourcing, L.P. Relay power reduction circuit
CN2534717Y (zh) * 2002-03-21 2003-02-05 周义雄 主/从插座控制装置
US7023683B1 (en) * 2002-09-04 2006-04-04 Yazaki North America, Inc Electric relay control circuit
JP4835351B2 (ja) * 2005-12-28 2011-12-14 アンデン株式会社 リレー駆動回路
DE102007061180A1 (de) 2007-12-15 2009-07-02 Endress + Hauser Gmbh + Co. Kg Vorrichtung zur Bestimmung und/oder Überwachung einer Prozessgröße
DE102008002758B4 (de) * 2008-01-25 2016-04-28 Schneider Electric Automation Gmbh Relaisschaltung
JP5195029B2 (ja) * 2008-05-28 2013-05-08 パナソニック株式会社 リレー制御装置および調理機器
US8094427B2 (en) * 2009-01-15 2012-01-10 Leach International Corporation System for precisely controlling the operational characteristics of a relay
US9305729B2 (en) * 2013-08-21 2016-04-05 Littelfuse, Inc. Capacitive driven normal relay emulator using voltage boost
US10847965B2 (en) * 2018-01-10 2020-11-24 Eaton Intelligent Power Limited Circuit interruption device with thermal protection
US11025052B2 (en) 2018-01-22 2021-06-01 Rockwell Automation Technologies, Inc. SCR based AC precharge protection

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2000117A1 (de) * 1970-01-02 1971-07-08 Anker Werke Ag Schaltungsanordnung zum Betrieb elektromagnetischer Verbraucher
US4227230A (en) * 1978-09-19 1980-10-07 Texas Instruments Incorporated Switch mode driver
JPS5947714A (ja) * 1982-09-10 1984-03-17 Matsushita Electric Ind Co Ltd ミシン駆動装置等の電磁ソレノイド駆動回路
DE3615908A1 (de) * 1986-05-12 1987-11-19 Siemens Ag Elektromagnetisches schaltgeraet
US4905120A (en) * 1988-10-20 1990-02-27 Caterpillar Inc. Driver circuit for solenoid operated fuel injectors
EP0392058A1 (fr) * 1989-04-13 1990-10-17 Siemens Aktiengesellschaft Circuit de commande d'au moins un relais électromagnétique

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4417201A (en) * 1971-04-01 1983-11-22 The Bendix Corporation Control means for controlling the energy provided to the injector valves of an electrically controlled fuel system
USRE31391E (en) * 1971-10-04 1983-09-20 Motorola, Inc. Voltage and current regulator with automatic switchover
FR2345595A1 (fr) * 1976-03-26 1977-10-21 Bosch Gmbh Robert Installation pour la commande, avec un courant regle, d'organes de manoeuvre electromagnetiques
DE2828678A1 (de) * 1978-06-30 1980-04-17 Bosch Gmbh Robert Verfahren und einrichtung zum betrieb eines elektromagnetischen verbrauchers, insbesondere eines einspritzventils in brennkraftmaschinen
DE2964900D1 (en) * 1978-08-24 1983-03-31 Lucas Ind Plc Control circuits for solenoids
DE3331678A1 (de) * 1983-09-02 1985-04-04 Westdeutsche Elektrogerätebau GmbH, 4770 Soest Schaltungsanordnung fuer eine durch aeussere beschaltung zeitlich begrenzbare anzugs- und halte-erregung eines relais
FR2607278B1 (fr) * 1986-11-26 1989-06-23 Bendix Electronics Sa Circuit integrable de regulation de courant dans une charge inductive et son application a la commande de bobine d'allumage d'un moteur a combustion interne
DE3824526A1 (de) * 1988-07-20 1990-01-25 Vdo Schindling Schaltungsanordnung zur regelung eines pulsierenden stroms
DE3925767A1 (de) * 1988-10-25 1990-04-26 Siemens Ag Verfahren zum ansteuern eines elektromechanischen relais
DE3908192A1 (de) * 1989-03-14 1990-09-20 Licentia Gmbh Elektronische schuetzansteuerung

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2000117A1 (de) * 1970-01-02 1971-07-08 Anker Werke Ag Schaltungsanordnung zum Betrieb elektromagnetischer Verbraucher
US4227230A (en) * 1978-09-19 1980-10-07 Texas Instruments Incorporated Switch mode driver
JPS5947714A (ja) * 1982-09-10 1984-03-17 Matsushita Electric Ind Co Ltd ミシン駆動装置等の電磁ソレノイド駆動回路
DE3615908A1 (de) * 1986-05-12 1987-11-19 Siemens Ag Elektromagnetisches schaltgeraet
US4905120A (en) * 1988-10-20 1990-02-27 Caterpillar Inc. Driver circuit for solenoid operated fuel injectors
EP0392058A1 (fr) * 1989-04-13 1990-10-17 Siemens Aktiengesellschaft Circuit de commande d'au moins un relais électromagnétique

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 8, no. 139 (E-253)(1576) 28. Juni 1984 & JP-A-59 047 714 ( MATSUSHITA ) 17. März 1984 *

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1965403A2 (fr) * 2007-01-15 2008-09-03 Yazaki North America, Inc. Pilote de relais à courant constant doté d'une résistance de détection contrôlée
EP1965403A3 (fr) * 2007-01-15 2009-07-22 Yazaki North America, Inc. Pilote de relais à courant constant doté d'une résistance de détection contrôlée
US7684168B2 (en) 2007-01-15 2010-03-23 Yazaki North America, Inc. Constant current relay driver with controlled sense resistor
CN109713760A (zh) * 2018-10-24 2019-05-03 深圳市蓝禾技术有限公司 一种放电方法、充电设备及计算机存储介质

Also Published As

Publication number Publication date
JPH04315723A (ja) 1992-11-06
CA2049469A1 (fr) 1992-02-22
US5317475A (en) 1994-05-31
DE4026427C1 (fr) 1992-02-13
EP0471891A3 (en) 1992-08-12

Similar Documents

Publication Publication Date Title
EP0705482B1 (fr) Circuits de commande pour un contacteur-disjoncteur
DE69412336T2 (de) Niederleistung-Vorreglerstromversorgungsschaltung
EP0471891A2 (fr) Circuit pour la commande d'un groupe de relais
EP0006843B2 (fr) Valve électromagnétique avec commande électronique
DE3882931T2 (de) Induktiver Leistungskonverter.
EP0392058A1 (fr) Circuit de commande d'au moins un relais électromagnétique
EP0111729B1 (fr) Montage pour alimenter des usagers électriques avec une tension continue
EP0837479B1 (fr) Circuit d'attaque pour électroaimant
DE69009122T2 (de) Aufwärts und abwärts Zerhacker.
EP1341202A1 (fr) Dispositif pour la commande d'un actionneur électromagnétique
DE3026147C2 (de) Geregelter fremdgetakteter Gleichspannungswandler
DE68903968T2 (de) Schaltnetzteil mit progressivem start.
DE69505017T2 (de) Gleichspannungswandler zur Ausgabe mehreren Signalen
DE29503146U1 (de) Schaltungsanordnung zur Ansteuerung eines Schützes
DE69107246T2 (de) Einrichtung und Verfahren zur Verbesserung der Steuerung von Schaltnetzteilen.
DE2608167B2 (de) Geregelter Eintakt-Durchflußumrichter zur Erzeugung mehrerer galvanisch getrennter Ausgangsspannungen
WO2001008307A1 (fr) Mecanisme d'entrainement electronique
DE3701395C2 (fr)
DE2922521B1 (de) Schaltungsanordnung zur Ansteuerung von Magneten in Aufzeichnungsgeraeten der Fernschreibtechnik
DE2732298A1 (de) Vorrichtung zur erzeugung einer impulsfolge mit in abhaengigkeit von einer steuerspannung einstellbarem tastverhaeltnis
DE1927681B2 (de) Stelleinrichtung für ein elektronisches Gerät mit einem Feldeffekttransistor
EP0084323B1 (fr) Circuit pour engendrer une tension continue de commande dépendant d'une tension alternative
DE3819097A1 (de) Schaltungsanordnung zum speisen eines reluktanzmotors
DE9409759U1 (de) Schaltungsanordnung zur Realisierung eines konstanten Schütz-Haltestroms
DE3204603C2 (de) Regeleinrichtung zur Regelung der Verstärkung eines Verstärkers

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 19901218

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): AT CH DE ES FR GB IT LI

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): AT CH DE ES FR GB IT LI

17Q First examination report despatched

Effective date: 19940331

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 19940811