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WO1989009147A1 - Dispositif electronique - Google Patents

Dispositif electronique Download PDF

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Publication number
WO1989009147A1
WO1989009147A1 PCT/DE1989/000053 DE8900053W WO8909147A1 WO 1989009147 A1 WO1989009147 A1 WO 1989009147A1 DE 8900053 W DE8900053 W DE 8900053W WO 8909147 A1 WO8909147 A1 WO 8909147A1
Authority
WO
WIPO (PCT)
Prior art keywords
switching elements
load
switching element
control device
electronic device
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.)
Ceased
Application number
PCT/DE1989/000053
Other languages
German (de)
English (en)
Inventor
Bernhard Mattes
Werner Nitschke
Hartmut Schumacher
Peter Taufer
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of WO1989009147A1 publication Critical patent/WO1989009147A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/01—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents
    • B60R21/017—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents including arrangements for providing electric power to safety arrangements or their actuating means, e.g. to pyrotechnic fuses or electro-mechanic valves
    • B60R21/0173—Diagnostic or recording means therefor
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/005—Testing of electric installations on transport means
    • G01R31/006—Testing of electric installations on transport means on road vehicles, e.g. automobiles or trucks

Definitions

  • the invention is based on an electronic device according to the preamble of claim 1.
  • the component to be controlled with a current is generally operated with a single mechanical or electronic switch connected to the positive or negative pole of the battery to put it into operation.
  • ignition coil ignition coil
  • injection valve / relay or the like
  • a single mechanical or electronic switch connected to the positive or negative pole of the battery to put it into operation.
  • the activation of a load resistor by a single switch is not sufficiently reliable since there is no possibility of checking the switch. Closing the switch immediately activates the load element.
  • a test circuit for the release device of a safety device serving to protect the occupants of a vehicle during an accident in which a semiconductor switch in series with the output stage semiconductor switch of the release device and for Safety device is switched and in which a test program prevents simultaneous conduction of both semiconductor switches.
  • the output stage circuit is checked only once and immediately after the supply voltage has been switched on. After the test cycle has been successfully completed, however, the semiconductor switch connected in series with the output stage semiconductor switch remains in its conductive state and thus switched on. A constant check of the output stage semiconductor switch that triggers the safety device is not possible.
  • the electronic device according to the invention with the characterizing features of the main claim has the advantage that the output stage, the switching process of which triggers a current via the ignition element of the safety device, can be checked continuously. This increases the functional safety of a safety system for vehicle occupants.
  • FIG. 1 shows a first circuit configuration of the exemplary embodiment
  • FIG. 2 shows a second exemplary embodiment with transistors as switching elements
  • FIG. 3 shows a signal diagram to explain the mode of operation of the invention.
  • the electronic device comprises a control device 12 connected to a power source, in particular a battery 15, which is connected on the input side to at least one sensor 11.
  • the sensor 11 is preferably an acceleration sensor, at the output of which either an acceleration-proportional voltage signal is generated or a voltage signal which only arises when a definable acceleration threshold is exceeded.
  • the control device is connected to two switching elements 14a, 14b and a load 13, the switching elements 14a, 14b and the load 13 being connected in series in such a way that a respective connection of the load is activated by actuating a switching element 14a, 14b 13 can be connected to one pole of the current source 15.
  • the load 13 is, for example, a load resistor in the form of a squib or the like, which in turn is part of a securing means 16 and activates it when the current is sufficiently large.
  • the securing means 16 are, for example, an airbag which is inflated by a gas charge activated by the squib (load 13) and in this way protects vehicle occupants from damage in the event of an accident.
  • FIG. 2 complementary transistors are provided as switching elements 14a, 14b, which can be controlled by the control device 12.
  • FIG. 3a shows control pulses of the control device 12 for the switching element 14a
  • FIG. 3b shows control pulses of the control device 12 for the switching element 14b
  • FIG. 3c shows the output signal of the sensor 11 in the event of an accident, which should lead to the activation of the securing means 16.
  • the switching element 14a is controlled by the control device 12 via the control line 12a in such a way that it changes to the conductive state and a connection of the load 13, in this case the connection connected to the line 13a, is connected to a pole of the current source 15 .
  • the conductive state of the switching element 14a exists in the time interval t, t.
  • the second switching element 14b is not activated by the control device 12, so that the other connection of the load 13 is not connected to one pole of the current source 15.
  • a circuit is first closed via the control unit 12 (lines 15a, 13a), which makes it possible to check the functionality of the switching element 14a itself.
  • a second circuit is also closed via the control device 12 (lines 15a, 13b), which enables the control device 12 to also check the state of the load 13 itself. For example, it can be determined in this way whether there is a short circuit, an inadmissibly high resistance or even an interruption in the load 13.
  • the actuation of the switching element 14a is canceled again.
  • the switching element 14b is then actuated by the control device 12 in the time interval t, t such that the other connection of the Load 13 is connected to a pole (line 15b) of the current source 15.
  • the control unit 12 can now check the state of the switching element 14b and again the state of the load 13 itself. This alternate check of the output stages driving the load 13 is repeated as shown in the diagrams in FIG. 3a, FIG. 3b in order to check the functionality. Only when the sensor 11 sends a signal indicating an accident to the control unit 12, for example at time t, are the two switching elements 14a, 14b simultaneously activated by the control unit 12, so that the load 13 is connected to each a pole of the power source 15 is connected. A current can now flow through the load 13, which in the case of a squib serves as a load to ignite it and to inflate the airbag (gas bag) through an activated gas propellant charge.
  • the diagrams in FIG. 3 show that the switching elements 14a, 14b are periodically actuated by the control device 12 in such a way that they are alternately in a conductive or non-conductive state, so that only one connection of the load 13 is in each case is connected to a pole of the current source 15. 3 also shows that the duration of the conductive or non-conductive state of the switching elements 14a, 14b is essentially the same length. It is within the scope of the invention to modify the named time intervals according to practical aspects and, for example, to select the activation times that lead to a conductive state of the switching elements 14a, 14b shorter than the time intervals in which the switching elements 14a, 14b do not lead.
  • each switching element 14a or 14b it is possible to control each switching element 14a or 14b with different time intervals, if this is the case is appropriate for the respective application.
  • the invention enables the permanent functional control of both the switching elements 14a, 14b and the load 13 itself, so that a high degree of reliability of the device is ensured.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Air Bags (AREA)
  • Dc-Dc Converters (AREA)

Abstract

Un dispositif électronique d'alimentation d'une charge (13) comprend un appareil de commande (12) qui commande cycliquement des commutateurs (14a, 14b) de sorte que seule une connexion de la charge (13) peut être reliée à la fois à un pôle d'une source de courant (15). L'état des commutateurs (14a, 14b) et de la charge (13) peut ainsi être contrôlé en permanence.
PCT/DE1989/000053 1988-03-22 1989-01-30 Dispositif electronique Ceased WO1989009147A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3809580A DE3809580A1 (de) 1988-03-22 1988-03-22 Elektronische einrichtung
DEP3809580.7 1988-03-22

Publications (1)

Publication Number Publication Date
WO1989009147A1 true WO1989009147A1 (fr) 1989-10-05

Family

ID=6350355

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE1989/000053 Ceased WO1989009147A1 (fr) 1988-03-22 1989-01-30 Dispositif electronique

Country Status (3)

Country Link
DE (2) DE8816606U1 (fr)
ES (1) ES2010903A6 (fr)
WO (1) WO1989009147A1 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4218645A1 (de) * 1991-06-10 1992-12-17 Mitsubishi Electric Corp Vorrichtung zum schutz von fahrzeuginsassen
FR2680007A1 (fr) * 1991-07-31 1993-02-05 Bosch Gmbh Robert Dispositif de controle d'un appareil electrique dans un vehicule et des elements d'excitation le commandant.
EP0556991A1 (fr) * 1992-02-19 1993-08-25 Namco Controls Corporation Système de connexion de capteur
US5512890A (en) * 1992-02-19 1996-04-30 Namco Controls Corporation Sensor connection system
WO1996032302A1 (fr) * 1995-04-13 1996-10-17 Siemens Aktiengesellschaft Dispositif de declenchement d'un systeme de protection de personnes
DE4224477B4 (de) * 1991-07-25 2004-08-05 General Engineering (Netherlands) B.V. Sicherheitsanordnung in einer Zündschaltung für einen Airbag

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19951957B4 (de) * 1999-03-31 2009-01-02 Siemens Ag Überwachungsverfahren und hiermit korrespondierende Überwachungseinrichtung für eine Aktorbeschaltung
WO2001023218A1 (fr) * 1999-09-30 2001-04-05 Siemens Aktiengesellschaft Controleur pour la protection des passagers
DE102006055315A1 (de) * 2006-11-23 2008-06-12 Conti Temic Microelectronic Gmbh Überwachungsvorrichtung für eine Stromleitung

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3622974A (en) * 1970-05-11 1971-11-23 Gen Motors Corp Air cushion actuation and failure warning circuit
FR2130694A1 (fr) * 1971-03-26 1972-11-03 Nissan Motor
EP0027747A2 (fr) * 1979-10-23 1981-04-29 Regie Nationale Des Usines Renault Système de détection de collisions et de commande de dispositif de sécurité
WO1987007388A1 (fr) * 1986-05-21 1987-12-03 Robert Bosch Gmbh Procede de controle de circuits de resistance de charges
WO1988001241A1 (fr) * 1986-08-12 1988-02-25 Robert Bosch Gmbh Element de commande et de controle de circuits d'allumage
EP0283737A1 (fr) * 1987-03-26 1988-09-28 Siemens Aktiengesellschaft Circuit de commande pour actionner un dispositif de protection

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2851333A1 (de) * 1978-11-28 1980-06-12 Bosch Gmbh Robert Pruefschaltung fuer die ausloesevorrichtung einer den schutz der insassen eines fahrzeugs waehrend eines unfalles dienenden sicherheitseinrichtung

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3622974A (en) * 1970-05-11 1971-11-23 Gen Motors Corp Air cushion actuation and failure warning circuit
FR2130694A1 (fr) * 1971-03-26 1972-11-03 Nissan Motor
EP0027747A2 (fr) * 1979-10-23 1981-04-29 Regie Nationale Des Usines Renault Système de détection de collisions et de commande de dispositif de sécurité
WO1987007388A1 (fr) * 1986-05-21 1987-12-03 Robert Bosch Gmbh Procede de controle de circuits de resistance de charges
WO1988001241A1 (fr) * 1986-08-12 1988-02-25 Robert Bosch Gmbh Element de commande et de controle de circuits d'allumage
EP0283737A1 (fr) * 1987-03-26 1988-09-28 Siemens Aktiengesellschaft Circuit de commande pour actionner un dispositif de protection

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4218645A1 (de) * 1991-06-10 1992-12-17 Mitsubishi Electric Corp Vorrichtung zum schutz von fahrzeuginsassen
US5406127A (en) * 1991-06-10 1995-04-11 Mitsubishi Denki Kabushiki Kaisha Passenger protecting apparatus
DE4224477B4 (de) * 1991-07-25 2004-08-05 General Engineering (Netherlands) B.V. Sicherheitsanordnung in einer Zündschaltung für einen Airbag
FR2680007A1 (fr) * 1991-07-31 1993-02-05 Bosch Gmbh Robert Dispositif de controle d'un appareil electrique dans un vehicule et des elements d'excitation le commandant.
EP0556991A1 (fr) * 1992-02-19 1993-08-25 Namco Controls Corporation Système de connexion de capteur
US5512890A (en) * 1992-02-19 1996-04-30 Namco Controls Corporation Sensor connection system
WO1996032302A1 (fr) * 1995-04-13 1996-10-17 Siemens Aktiengesellschaft Dispositif de declenchement d'un systeme de protection de personnes
US6016884A (en) * 1995-04-13 2000-01-25 Siemens Aktiengesellschaft Configuration for triggering a personal protection system

Also Published As

Publication number Publication date
DE3809580A1 (de) 1989-10-12
ES2010903A6 (es) 1989-12-01
DE8816606U1 (de) 1989-12-28

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