[go: up one dir, main page]

EP0972134B1 - Device for regulating the flow of electricity through a consumer - Google Patents

Device for regulating the flow of electricity through a consumer Download PDF

Info

Publication number
EP0972134B1
EP0972134B1 EP98925406A EP98925406A EP0972134B1 EP 0972134 B1 EP0972134 B1 EP 0972134B1 EP 98925406 A EP98925406 A EP 98925406A EP 98925406 A EP98925406 A EP 98925406A EP 0972134 B1 EP0972134 B1 EP 0972134B1
Authority
EP
European Patent Office
Prior art keywords
voltage
measuring
line
computing unit
output 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 - Lifetime
Application number
EP98925406A
Other languages
German (de)
French (fr)
Other versions
EP0972134A1 (en
Inventor
Alfons Fisch
Ralf Förster
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
Siemens Corp
Original Assignee
Siemens AG
Siemens Corp
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, Siemens Corp filed Critical Siemens AG
Publication of EP0972134A1 publication Critical patent/EP0972134A1/en
Application granted granted Critical
Publication of EP0972134B1 publication Critical patent/EP0972134B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02PIGNITION, OTHER THAN COMPRESSION IGNITION, FOR INTERNAL-COMBUSTION ENGINES; TESTING OF IGNITION TIMING IN COMPRESSION-IGNITION ENGINES
    • F02P3/00Other installations
    • F02P3/02Other installations having inductive energy storage, e.g. arrangements of induction coils
    • F02P3/04Layout of circuits
    • F02P3/05Layout of circuits for control of the magnitude of the current in the ignition coil
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02PIGNITION, OTHER THAN COMPRESSION IGNITION, FOR INTERNAL-COMBUSTION ENGINES; TESTING OF IGNITION TIMING IN COMPRESSION-IGNITION ENGINES
    • F02P3/00Other installations
    • F02P3/02Other installations having inductive energy storage, e.g. arrangements of induction coils
    • F02P3/04Layout of circuits
    • F02P3/05Layout of circuits for control of the magnitude of the current in the ignition coil
    • F02P3/051Opening or closing the primary coil circuit with semiconductor devices
    • F02P3/053Opening or closing the primary coil circuit with semiconductor devices using digital techniques

Definitions

  • the invention relates to a device for regulating the Current flow according to the preamble of claim 1 and 2.
  • From DE 38 26 663 A1 discloses a method and a circuit for simultaneous transmission of operating data known in the Transfer operating data and voice signals over one line become.
  • the peak values of the operating data increase chosen as the maximum peaks of the speech signals, so that the signals can be mixed and at the receiving site from the speech signal using a comparison voltage the operating data can be determined again.
  • the Speech signal is obtained by subtracting the rejected operational data obtained from the signal mixture.
  • a device for serial Data exchange between two stations via a common Data transmission line.
  • the first station recognizes due different voltage levels the different ones Bit states on the data line.
  • the second station detects due to the existence or non-existence a certain current flow the different bit states on the data transmission line.
  • the voltage levels are evaluated differently by the stations, so that a simultaneous data transmission in both directions possible is.
  • From DE 40 05 813 A1 is already a device for control the current flow through a consumer known in which the Consumer with a transistor and a measuring resistor in Row is switched.
  • the at the measuring resistor by the load current caused voltage drop is using an operational amplifier compared with a reference voltage. Is the Voltage drop at the measuring resistor greater than a predetermined Value, an output signal is sent to the controller the load current is used.
  • the object of the invention is based on a simply constructed Device for controlling the flow of current through a Provide consumers with an accurate and simple scheme the current flow is enabled.
  • FIG. 1 shows an electronic circuit arrangement for regulating the flow of current through a primary coil 1, the one Consumer represents.
  • the primary coil 1 is connected to an input connected via an input line 18 to a battery 17.
  • Parallel to the primary coil 1 is a secondary coil. 2 connected to the battery 17, whose output via a Ignition 19 is guided to a spark plug 3, which in turn with its output connected to ground.
  • the spark plug 3 is arranged in the combustion chamber of an internal combustion engine.
  • the primary coil 1 is connected to the output via an output line 20 to the collector terminal C of a first transistor 4th connected.
  • the emitter terminal E of the transistor 4 leads via a measuring line 21 to a first measuring resistor 5, the connected to ground.
  • the measuring line 21 is the Input of a voltage-dependent current source 8 connected, whose output is connected to an output line 9.
  • the measuring line 21 is also connected to a first input 22 of a Operational amplifier 6 connected.
  • the second input 23 of Operational amplifier 6 is connected to a reference voltage source 24 connected, preferably a constant voltage emits.
  • the output 26 of the operational amplifier 6 is connected to the Base terminal B of a second transistor 7 connected, its emitter terminal E to ground and its collector terminal C is in communication with an output line 9.
  • the Output line 9 is connected via a second measuring resistor 16 a predetermined potential, in this case +5 V, connected.
  • a predetermined potential in this case +5 V
  • the arithmetic unit 10 has a Steuerausganq 13th on, via a control line 27 and a first resistor 14 is connected to the gate terminal G of the first transistor 4 is.
  • the voltage on the measuring line changes 21 is applied, proportional, so that the voltage-dependent Current source 8 a second stream on the output line 9 outputs, which is proportional to the primary current, and with the time increases linearly.
  • the operational amplifier 6 controls the second transistor 7 only when the primary current exceeds the limit current ICL at time TL. Consequently the voltage behaves at the analogue input 12 and at the digital input 11 as a function of the primary current IC accordingly the course shown in Figure 4.
  • the arithmetic unit 10 regulates on the one hand via the transistor 4th the current flow through the primary coil 1. At the same time monitors the Arithmetic unit 10 with an analog input 12 and a digital input 11 the current flow through the primary coil 1. At the analog input 12, an analog-to-digital converter is provided which the voltage applied to the output line 9 in a voltage corresponding digital value, which then converts the arithmetic unit 10 used to control the transistor 4.
  • the arithmetic unit 10 monitors the at the digital input 11 voltage applied. Is the voltage at the digital input 11 in the high range, that is over 2.4 volts, so regulates the Computing unit 10, the current flow through the primary coil 1 via the voltage values picked up by the analog input 12.
  • the computing unit 10 detects that the digital input 11 a low signal is present, which is below 0.8 volts, so is from the arithmetic unit 10, preferably at a calculated ignition point, the first transistor 4 is driven in such a way that the Current flow through the primary coil 1 is interrupted and thus in the secondary coil 2, a high ignition voltage is generated, so that the spark plug 3 ignites.
  • connection of an analog and a digital input 12, 11 with a single output line 9 has the advantage that on the output line 9 both an analog information as well as digital information can be transmitted.
  • the analogue information is used for the regulation of the amperage, which flows through the primary coil 1 used and the digital Information is considered protection against overcurrent and as Sign used that the primary coil 1 sufficient is charged to perform ignition of the spark plug 3.
  • the analog information in the form of a voltage change the output line 9 is to be chosen so that the value range for a high signal or the value range for a low signal not leave so that the analog information the digital Information not from a high signal to a low signal or vice versa changes.
  • the monitoring of an overcurrent via a digital Input 11 advantageous because a scan of the digital Input 11 is performed faster and more often than at the analog input 12 and thus when too large Current that could damage the primary coil 1, quickly the primary current can be reduced.
  • the computing unit 10 knows the voltage value that the digital Signal in high state and in low state occupies. In order to calculates the arithmetic unit from the voltage applied to the analog input 12 Voltage the value of the analog signal. In addition is the analog signal advantageously dimensioned such that in the overlap between the analog and the digital Signal the arithmetic unit 10 always the value of the digital Detects signal.
  • the first transistor 4 provides a second switch and the second transistor 7 provides a first Switch.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Measurement Of Current Or Voltage (AREA)
  • Ignition Installations For Internal Combustion Engines (AREA)
  • Continuous-Control Power Sources That Use Transistors (AREA)

Description

Die Erfindung betrifft eine Vorrichtung zur Regelung des Stromflusses gemäß dem Oberbegriff des Anspruchs 1 und 2.The invention relates to a device for regulating the Current flow according to the preamble of claim 1 and 2.

Aus DE 39 08 558 ist ein Signalübertragungssystem bekannt, bei dem von einem Sender über eine Datenleitung ein analoges Signal und ein digitales Signal zu einem Empfänger übertragen werden. Beim Empfänger werden das analoge und das digitale Signal unabhängig voneinander ausgewertet.From DE 39 08 558 a signal transmission system is known, in which from a transmitter via a data line an analog Signal and a digital signal transmitted to a receiver become. At the receiver, the analog and the digital Signal evaluated independently.

Aus DE 38 26 663 A1 ist ein Verfahren und eine Schaltung zum gleichzeitigen Übertragen von Betriebsdaten bekannt, bei dem Betriebsdaten und Sprachsignale über eine Leitung übertragen werden. Dabei werden die Scheitelwerte der Betriebsdaten größer als die maximalen Scheitelwerte der Sprachsignale gewählt, damit die Signale gemischt werden können und am Empfangsort aus dem Sprachsignal mit Hilfe einer Vergleichsspannung die Betriebsdaten wieder ermittelt werden können. Das Sprachsignal wird durch Subtraktion der ausgesonderten Betriebsdaten aus dem Signalgemisch gewonnen.From DE 38 26 663 A1 discloses a method and a circuit for simultaneous transmission of operating data known in the Transfer operating data and voice signals over one line become. The peak values of the operating data increase chosen as the maximum peaks of the speech signals, so that the signals can be mixed and at the receiving site from the speech signal using a comparison voltage the operating data can be determined again. The Speech signal is obtained by subtracting the rejected operational data obtained from the signal mixture.

Aus DE 195 11 140 A1 ist eine Vorrichtung bekannt zum seriellen Datenaustausch zwischen zwei Stationen über eine gemeinsame Datenübertragungsleitung. Die erste Station erkennt aufgrund unterschiedlicher Spannungspegel die unterschiedlichen Bit-Zustände auf der Datenleitung. Die zweite Station erkennt aufgrund des Vorliegens beziehungsweise des nicht Vorliegens eines bestimmten Stromflusses die unterschiedlichen Bit-Zustände auf der Datenübertragungsleitung. Die Spannungspegel werden von den Stationen unterschiedlich ausgewertet, so daß eine gleichzeitige Datenübertragung in beiden Richtungen möglich ist.From DE 195 11 140 A1 a device is known for serial Data exchange between two stations via a common Data transmission line. The first station recognizes due different voltage levels the different ones Bit states on the data line. The second station detects due to the existence or non-existence a certain current flow the different bit states on the data transmission line. The voltage levels are evaluated differently by the stations, so that a simultaneous data transmission in both directions possible is.

Aus DE 40 05 813 A1 ist bereits eine Vorrichtung zur Regelung des Stromflusses durch einen Verbraucher bekannt, bei der der Verbraucher mit einem Transistor und einem Meßwiderstand in Reihe geschaltet ist. Der am Meßwiderstand durch den Laststrom verursachte Spannungsabfall wird mit einem Operationsverstärker mit einer Referenzspannung verglichen. Ist der Spannungsabfall am Meßwiderstand größer als ein vorgegebener Wert, so wird ein Ausgangssignal abgegeben, das zur Steuerung des Laststromes verwendet wird.From DE 40 05 813 A1 is already a device for control the current flow through a consumer known in which the Consumer with a transistor and a measuring resistor in Row is switched. The at the measuring resistor by the load current caused voltage drop is using an operational amplifier compared with a reference voltage. Is the Voltage drop at the measuring resistor greater than a predetermined Value, an output signal is sent to the controller the load current is used.

Die Aufgabe der Erfindung beruht darin, eine einfach aufgebaute Vorrichtung zum Regeln des Stromflusses durch einen Verbraucher anzugeben, mit der eine genaue und einfache Regelung des Stromflusses ermöglicht wird.The object of the invention is based on a simply constructed Device for controlling the flow of current through a Provide consumers with an accurate and simple scheme the current flow is enabled.

Die Aufgabe der Erfindung wird durch die Merkmale des Anspruchs 1 und 2 gelöst.The object of the invention is achieved by the features of the claim 1 and 2 solved.

Weitere vorteilhafte Ausbildungen der Erfindung sind in den Unteransprüchen angegeben.Further advantageous embodiments of the invention are in the Subclaims specified.

Die Erfindung wird im folgenden anhand der Figuren näher erläutert; es zeigen:

Figur 1
eine Vorrichtung zum Regeln des Stromflusses,
Figur 2
einen Spannungsverlauf auf der Meßleitung,
Figur 3
einen Stromverlauf auf der Meßleitung und
Figur 4
die Spannung VM auf der Ausgangsleitung in Abhängigkeit vom Stromfluß IC auf der Meßleitung.
The invention will be explained in more detail below with reference to the figures; show it:
FIG. 1
a device for controlling the flow of current,
FIG. 2
a voltage curve on the measuring line,
FIG. 3
a current waveform on the measuring line and
FIG. 4
the voltage VM on the output line in dependence on the current flow IC on the measuring line.

Die Erfindung wird im folgenden am Beispiel einer Stromregelung für einen Verbraucher im Kraftfahrzeug beschrieben. Die Anwendung der Erfindung ist jedoch nicht auf dieses Ausführungsbeispiel beschränkt, sondern auf jede Schaltungsanordnung anwendbar.The invention will be described below using the example of a current control described for a consumer in the motor vehicle. The However, application of the invention is not to this embodiment limited, but on any circuit applicable.

Figur 1 zeigt eine elektronische Schaltungsanordnung zum Regeln des Stromflusses durch eine Primärspule 1, die einen Verbraucher darstellt. Die Primärspule 1 ist mit einem Eingang über eine Eingangsleitung 18 mit einer Batterie 17 verbunden. Parallel zur Primärspule 1 ist eine Sekundärspule 2 an die Batterie 17 angeschlossen, deren Ausgang über eine Zündleitung 19 an eine Zündkerze 3 geführt ist, die wiederum mit ihrem Ausgang an Masse angeschlossen ist. Die Zündkerze 3 ist im Brennraum einer Brennkraftmaschine angeordnet.FIG. 1 shows an electronic circuit arrangement for regulating the flow of current through a primary coil 1, the one Consumer represents. The primary coil 1 is connected to an input connected via an input line 18 to a battery 17. Parallel to the primary coil 1 is a secondary coil. 2 connected to the battery 17, whose output via a Ignition 19 is guided to a spark plug 3, which in turn with its output connected to ground. The spark plug 3 is arranged in the combustion chamber of an internal combustion engine.

Die Primärspule 1 ist mit dem Ausgang über eine Ausgangsleitung 20 an den Kollektoranschluß C eines ersten Transistors 4 angeschlossen. Der Emitteranschluß E des Transistors 4 führt über eine Meßleitung 21 zu einem ersten Meßwiderstand 5, der an Masse angeschlossen ist. Mit der Meßleitung 21 ist der Eingang einer spannungsabhängigen Stromquelle 8 verbunden, dessen Ausgang an eine Ausgangsleitung 9 angeschlossen ist. Die Meßleitung 21 ist zudem mit einem ersten Eingang 22 eines Operationsverstärkers 6 verbunden. Der zweite Eingang 23 des Operationsverstärkers 6 ist an eine Referenzspannungsquelle 24 angeschlossen, die vorzugsweise eine konstante Spannung abgibt. Der Ausgang 26 des Operationsverstärkers 6 ist an den Basisanschluß B eines zweiten Transistors 7 angeschlossen, dessen Emitteranschluß E mit Masse und dessen Kollektoranschluß C mit einer Ausgangsleitung 9 in Verbindung steht. Die Ausgangsleitung 9 ist über einen zweiten Meßwiderstand 16 an ein vorgegebenes Potential, in diesem Fall +5 V, angeschlossen. Zudem führen von der Ausgangsleitung 9 eine Analogleitung zu einem Analogeingang 12 einer Recheneinheit 10 und eine Digitalleitung zu einem Digitaleingang 11 der Recheneinheit 10. Die Recheneinheit 10 weist einen Steuerausganq 13 auf, der über eine Steuerleitung 27 und einen ersten Widerstand 14 mit dem Gateanschluß G des ersten Transistors 4 verbunden ist.The primary coil 1 is connected to the output via an output line 20 to the collector terminal C of a first transistor 4th connected. The emitter terminal E of the transistor 4 leads via a measuring line 21 to a first measuring resistor 5, the connected to ground. With the measuring line 21 is the Input of a voltage-dependent current source 8 connected, whose output is connected to an output line 9. The measuring line 21 is also connected to a first input 22 of a Operational amplifier 6 connected. The second input 23 of Operational amplifier 6 is connected to a reference voltage source 24 connected, preferably a constant voltage emits. The output 26 of the operational amplifier 6 is connected to the Base terminal B of a second transistor 7 connected, its emitter terminal E to ground and its collector terminal C is in communication with an output line 9. The Output line 9 is connected via a second measuring resistor 16 a predetermined potential, in this case +5 V, connected. In addition, lead from the output line 9 an analog line to an analog input 12 of a computing unit 10 and a Digital line to a digital input 11 of the arithmetic unit 10. The arithmetic unit 10 has a Steuerausganq 13th on, via a control line 27 and a first resistor 14 is connected to the gate terminal G of the first transistor 4 is.

Die Funktionsweise der Schaltungsanordnung der Figur 1 wird im folgenden anhand der Figuren 2 bis 4 näher erläutert: Für die Vorbereitung einer Zündung der Zündkerze 3 steuert die Recheneinheit 10 den ersten Transistor 4 zum Zeitpunkt TE auf, so daß als Folge davon der Strom durch die Primärspule zunimmt und der Spannungsabfall zwischen dem Kollektoranschluß und dem Emitteranschluß des ersten Transistors 4 von einer ersten Spannung UA zum Zeitpunkt TE auf eine zweite Spannung UE abfällt. Als Folge davon fließt durch die Primärspule 1 ein Primärstrom ICE, der zum Zeitpunkt TE einsetzt, und der mit der Zeit t ansteigt, wie in Figur 3 dargestellt ist.The operation of the circuit arrangement of Figure 1 will explained in more detail below with reference to Figures 2 to 4: For the preparation of ignition of the spark plug 3 controls the Arithmetic unit 10, the first transistor 4 at time TE on, so that as a result of the current through the primary coil increases and the voltage drop between the collector terminal and the emitter terminal of the first transistor 4 of a first voltage UA at the time TE to a second Voltage UE drops. As a result, flows through the primary coil 1, a primary current ICE, which starts at time TE, and which increases with time t, as shown in FIG is.

Als Folge davon verändert sich die Spannung, die auf der Meßleitung 21 anliegt, proportional, so daß die spanungsabhängige Stromquelle 8 einen zweiten Strom auf die Ausgangsleitung 9 ausgibt, der proportional zum Primärstrom ist, und der mit der Zeit linear zunimmt.As a result, the voltage on the measuring line changes 21 is applied, proportional, so that the voltage-dependent Current source 8 a second stream on the output line 9 outputs, which is proportional to the primary current, and with the time increases linearly.

Liegt der Primärstrom unter einem vorgegebenen Grenzstrom ICL, so bleibt auch der Spannungsabfall auf der Meßleitung 21 unter einem vorgegebenen Wert. Der Operationsverstärker 6 steuert den zweiten Transistor 7 erst auf, wenn der Primärstrom den Grenzstrom ICL zum Zeitpunkt TL übersteigt. Somit verhält sich die Spannung am Analogeingang 12 und am Digitaleingang 11 in Abhängigkeit vom Primärstrom IC entsprechend dem in Figur 4 dargestellten Verlauf.If the primary current is below a specified limit current ICL, so also the voltage drop on the measuring line 21 remains below a given value. The operational amplifier 6 controls the second transistor 7 only when the primary current exceeds the limit current ICL at time TL. Consequently the voltage behaves at the analogue input 12 and at the digital input 11 as a function of the primary current IC accordingly the course shown in Figure 4.

Fließt ein Primärstrom und ist der Primärstrom unter dem Grenzstrom ICL, so sinkt die Spannung am Analogeingang 12 und am Digitaleingang 11 von dem vorgegebenen Potential von +5 V proportional bis auf einen Wert von knapp unter 3 V ab. Dieser Spannungsabfall wird durch den zweiten Strom, der durch die spannungsabhängige Stromquelle 8 geliefert wird, hervorgerufen.Flows a primary stream and the primary stream is below that Limit current ICL, so the voltage drops at the analog input 12 and at the digital input 11 from the predetermined potential of +5 volts proportionally down to a value of just under 3V. This Voltage drop is due to the second current flowing through the voltage-dependent current source 8 is supplied, caused.

Überschreitet nun der Primärstrom IC den vorgegebenen Grenzwert ICL, so erkennt dies der Operationsverstärker 6, da die Spannung auf der Meßleitung 21 über die Spannung der Referenzspannungsquelle 24 steigt. Als Folge davon steuert der Operationsverstärker 6 über seinen Ausgang 26 den Basisanschluß B des zweiten Transistors 7 an, so daß der zweite Transistor 7 leitend wird und damit ein dritter Strom über den zweiten Transistor 7 und die Ausgangsleitung 9 fließt. Der zweite Transistor 7 und der zweite Widerstand 16 sind derart ausgebildet, daß bei einem leitenden zweiten Transistor 7 die Spannung auf der Ausgangsleitung 9 unter einen vorgegebenen Grenzwert, in diesem Fall 0,8 V abfällt. Dies ist in Figur 4 für den vorgegebenen Grenzstrom ICL mit 11 A dargestellt.Now exceeds the primary current IC the predetermined limit ICL, this recognizes the operational amplifier 6, since the Voltage on the measuring line 21 via the voltage of the reference voltage source 24 is rising. As a result, the Operational amplifier 6 via its output 26 to the base terminal B of the second transistor 7, so that the second Transistor 7 becomes conductive and thus a third current over the second transistor 7 and the output line 9 flows. The second transistor 7 and the second resistor 16 are formed such that in a conductive second transistor 7 the voltage on the output line 9 under a predetermined limit value, in this case 0.8 V drops. This is in Figure 4 for the predetermined limiting current ICL with 11 A. shown.

Die Recheneinheit 10 regelt zum einen über den Transistor 4 den Stromfluß durch die Primärspule 1. Zugleich überwacht die Recheneinheit 10 mit einem Analogeingang 12 und einem Digitaleingang 11 den Stromfluß durch die Primärspule 1. Am Analogeingang 12 ist ein Analog/Digital-Wandler vorgesehen, der die auf der Ausgangsleitung 9 anliegende Spannung in einen entsprechenden digitalen Wert umwandelt, den dann die Recheneinheit 10 zur Regelung des Transistors 4 verwendet.The arithmetic unit 10 regulates on the one hand via the transistor 4th the current flow through the primary coil 1. At the same time monitors the Arithmetic unit 10 with an analog input 12 and a digital input 11 the current flow through the primary coil 1. At the analog input 12, an analog-to-digital converter is provided which the voltage applied to the output line 9 in a voltage corresponding digital value, which then converts the arithmetic unit 10 used to control the transistor 4.

Zugleich überwacht die Recheneinheit 10 die am Digitaleingang 11 anliegende Spannung. Liegt die Spannung am Digitaleingang 11 im High-Bereich, das heißt über 2,4 Volt, so regelt die Recheneinheit 10 den Stromfluß durch die Primärspule 1 über die Spannungswerte, die vom Analogeingang 12 aufgenommen werden. At the same time, the arithmetic unit 10 monitors the at the digital input 11 voltage applied. Is the voltage at the digital input 11 in the high range, that is over 2.4 volts, so regulates the Computing unit 10, the current flow through the primary coil 1 via the voltage values picked up by the analog input 12.

Erkennt jedoch die Recheneinheit 10, daß am Digitaleingang 11 ein Low-Signal anliegt, das unter 0,8 Volt liegt, so wird von der Recheneinheit 10, vorzugsweise zu einem berechneten Zündzeitpunkt, der erste Transistor 4 derart angesteuert, daß der Stromfluß durch die Primärspule 1 unterbrochen wird und somit in der Sekundärspule 2 eine hohe Zündspannung erzeugt wird, so daß die Zündkerze 3 zündet.However, the computing unit 10 detects that the digital input 11 a low signal is present, which is below 0.8 volts, so is from the arithmetic unit 10, preferably at a calculated ignition point, the first transistor 4 is driven in such a way that the Current flow through the primary coil 1 is interrupted and thus in the secondary coil 2, a high ignition voltage is generated, so that the spark plug 3 ignites.

Die Verbindung eines analogen und eines digitalen Einganges 12, 11 mit einer einzigen Ausgangsleitung 9, hat den Vorteil, daß über die Ausgangsleitung 9 sowohl eine analoge Information als auch eine digitale Information übertragen werden kann. Die analoge Information wird für die Regelung der Stromstärke, die durch die Primärspule 1 fließt, verwendet und die digitale Information wird als Schutz gegen Überstrom und als Zeichen dafür verwendet, daß die Primärspule 1 ausreichend aufgeladen ist, um eine Zündung der Zündkerze 3 durchzuführen.The connection of an analog and a digital input 12, 11 with a single output line 9, has the advantage that on the output line 9 both an analog information as well as digital information can be transmitted. The analogue information is used for the regulation of the amperage, which flows through the primary coil 1 used and the digital Information is considered protection against overcurrent and as Sign used that the primary coil 1 sufficient is charged to perform ignition of the spark plug 3.

Die analoge Information in Form einer Spannungsänderung auf der Ausgangsleitung 9 ist so zu wählen, daß der Wertebereich für ein High-Signal bzw. der Wertebereich für ein Low-Signal nicht verlassen wird, damit die analoge Information die digitale Information nicht von einem High-Signal zu einem Low-Signal oder umgekehrt ändert.The analog information in the form of a voltage change the output line 9 is to be chosen so that the value range for a high signal or the value range for a low signal not leave so that the analog information the digital Information not from a high signal to a low signal or vice versa changes.

Zudem ist die Überwachung eines Überstromes über einen digitalen Eingang 11 vorteilhaft, da eine Abtastung des digitalen Eingangs 11 schneller und öfter durchgeführt wird, als bei dem analogen Eingang 12 und somit bei Auftreten eines zu großen Stromes, der die Primärspule 1 beschädigen könnte, schnell der Primärstrom reduziert werden kann. In addition, the monitoring of an overcurrent via a digital Input 11 advantageous because a scan of the digital Input 11 is performed faster and more often than at the analog input 12 and thus when too large Current that could damage the primary coil 1, quickly the primary current can be reduced.

Die Recheneinheit 10 kennt den Spannungswert, den das digitale Signal im High-Zustand und im Low-Zustand einnimmt. Damit berechnet die Recheneinheit aus der am Analogeingang 12 anliegenden Spannung den Wert des analogen Signals. Zudem ist das analoge Signal vorteilhafterweise derart dimensioniert, daß bei der Überlagerung zwischen dem analogen und dem digitalen Signal die Recheneinheit 10 immmer den Wert des digitalen Signals erkennt. Der erste Transistor 4 stellt einen zweiten Schalter und der zweite Tansistor 7 stellt einen ersten Schalter dar.The computing unit 10 knows the voltage value that the digital Signal in high state and in low state occupies. In order to calculates the arithmetic unit from the voltage applied to the analog input 12 Voltage the value of the analog signal. In addition is the analog signal advantageously dimensioned such that in the overlap between the analog and the digital Signal the arithmetic unit 10 always the value of the digital Detects signal. The first transistor 4 provides a second switch and the second transistor 7 provides a first Switch.

Claims (5)

  1. Device for regulating the current flow through a consumer load (1) which is connected to earth by means of a measuring line (21),
    with means connected to the measuring line (21) which emit a first current to an output line (9), as a function of the measuring voltage present on the measuring line (21),
    characterised in that,
    a computing unit (10) is provided, which is connected to the output line (9) via an analogue input (12) and via a digital input (11),
    the computing unit (10) detects the value of the voltage on the output line (9) via the analogue input, the computing unit regulates the current flow through the consumer load via a first switch (4), as a function of the voltage determined via the analogue input,
    the computing unit (10) detects the voltage on the output line (9) via the digital input to determine whether a low signal is present, and
    the computing unit opens the first switch (4) for a predetermined period in the case of a low signal on the digital input, thereby interrupting the current flow through the consumer load (1).
  2. Device for regulating the current flow through a consumer load (1), which is interposed between a positive potential (17) and a first measuring resistor (5), which is connected to earth by means of a measuring line (21),
    with first means which are connected to the measuring line (21) and emit a first current to an output line (9) as a function of the measuring voltage present on the measuring line (21), said output line being connected to a predetermined potential via a second measuring resistor (16), characterised in that,
    second means are provided which are connected to the measuring line (21) and which emit a second current to the output line (9) as a function of the measuring voltage, if the measuring voltage is smaller than a predetermined threshold value, the second current flow being so great that the voltage on the output line (9) drops below a predetermined value, with
    a computing unit (10) which is connected to the output line (9) via an analogue unit (12) and via a digital input (11),
    the computing unit (10) is connected to a first switch (4) via a control line (27), said first switch (4) being positioned between the consumer load (1) and the measuring line,
    the computing unit (10) detects the value of the voltage on the output line via the analogue input, the computing unit controls the first switch (4) as a function of the voltage determined via the analogue input and thereby regulates the current flow through the consumer load,
    the computing unit (10) detects the voltage on the output line via the digital input, to determine whether a low signal is present, and
    the computing unit opens the first switch (4) for a predetermined period in the case of a low signal on the digital input, thereby interrupting the current flow through the consumer load (1)
  3. Device according to claim 1 and 2, characterised in that a voltage-dependent current source (8) is used as the first means.
  4. Device according to claim 2, characterised in that an operational amplifier (6) is provided as the second means, being connected to a first input with the measuring line (21) and to a second input with a constant voltage source (24) and being taken with an output to a second switch (7), via which the output line (9) can be connected to earth, the operational amplifier comparing the measuring voltage with the reference voltage of the voltage source (24) and opening the second switch (7), if the measuring voltage is smaller than the reference voltage and closing the second switch (7), if the measuring voltage is greater than the reference voltage.
  5. Device according to one of claims 1 to 4, characterised in that an ignition coil is arranged as the consumer load (1) and is protected against overcurrent by the computing unit (10).
EP98925406A 1997-04-04 1998-03-18 Device for regulating the flow of electricity through a consumer Expired - Lifetime EP0972134B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19713981A DE19713981A1 (en) 1997-04-04 1997-04-04 Device for supplying an analog and a digital signal to a computing unit and device for regulating the current flow through a consumer
DE19713981 1997-04-04
PCT/DE1998/000799 WO1998045597A1 (en) 1997-04-04 1998-03-18 Device for regulating the flow of electricity through a consumer

Publications (2)

Publication Number Publication Date
EP0972134A1 EP0972134A1 (en) 2000-01-19
EP0972134B1 true EP0972134B1 (en) 2005-10-26

Family

ID=7825472

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98925406A Expired - Lifetime EP0972134B1 (en) 1997-04-04 1998-03-18 Device for regulating the flow of electricity through a consumer

Country Status (6)

Country Link
US (1) US6204693B1 (en)
EP (1) EP0972134B1 (en)
JP (1) JP2001521655A (en)
KR (1) KR100564086B1 (en)
DE (2) DE19713981A1 (en)
WO (1) WO1998045597A1 (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10230216A1 (en) * 2002-07-04 2004-01-22 Endress + Hauser Gmbh + Co. Kg Method for functionally safe data transmission between a sensor and an evaluation unit
JP3607902B2 (en) * 2002-07-22 2005-01-05 三菱電機株式会社 Ignition device for internal combustion engine
FR2853941B1 (en) * 2003-04-17 2007-02-09 Siemens Vdo Automotive METHOD FOR THE PRIMARY IGNITION CURRENT CHECK OF AN INTERNAL COMBUSTION ENGINE WITH COMMAND IGNITION
US7002326B1 (en) * 2003-09-08 2006-02-21 National Semiconductor Corporation Method of modulating current regulation control loop's current magnitude from a second control signal
DE102004025909A1 (en) * 2004-05-27 2005-12-22 Infineon Technologies Ag Constant current supply for such as LED lights on an automobile has a fault detection circuit to provide status data
JP4746942B2 (en) * 2005-08-31 2011-08-10 三洋電機株式会社 Motor speed control integrated circuit
CN106438155A (en) * 2016-09-28 2017-02-22 中国第汽车股份有限公司 Ignition system with ignition energy self-adaptive adjustment function and control method
CN108204325B (en) * 2018-03-03 2024-03-15 东莞传动电喷科技有限公司 Integrated ignition coil

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1208855B (en) * 1987-03-02 1989-07-10 Marelli Autronica VARIABLE SPARK ENERGY IGNITION SYSTEM FOR INTERNAL COMBUSTION ENGINES PARTICULARLY FOR MOTOR VEHICLES
DE3826663A1 (en) * 1988-08-05 1990-02-08 Eickhoff Geb Method and circuit for simultaneously transmitting operating data and/or control commands of a mining machine used underground and of speech signals of the machine operator
DE3908558A1 (en) * 1989-03-16 1990-09-20 Knick Elekt Messgeraete Gmbh SIGNAL TRANSFER SYSTEM
US5043633A (en) * 1989-11-13 1991-08-27 Ncr Corporation Circuit and method for regulating the current flow in a distributorless ignition system coil
DE4005813C2 (en) * 1990-02-23 2002-01-10 Siemens Ag Device for monitoring the load current of an electronically switched consumer
JPH0579436A (en) * 1991-09-17 1993-03-30 Nippondenso Co Ltd Ignition device of internal combustion engine
DE4231954C2 (en) * 1992-09-24 1994-10-20 Telefunken Microelectron Ignition energy control for internal combustion engines
JPH0828415A (en) * 1994-07-14 1996-01-30 Hitachi Ltd Ignition device for internal combustion engine
DE19511140B4 (en) * 1995-03-27 2007-08-09 Robert Bosch Gmbh Device for serial data exchange between two stations
US6100728A (en) * 1995-07-31 2000-08-08 Delco Electronics Corp. Coil current limiting feature for an ignition coil driver module
US5970964A (en) * 1995-12-18 1999-10-26 Fuji Electric Co., Ltd. Circuit device for igniting internal combustion engine and semiconductor device for igniting internal combustion engine
US5775310A (en) * 1996-12-24 1998-07-07 Hitachi, Ltd. Ignition device for an internal combustion engine

Also Published As

Publication number Publication date
DE59813143D1 (en) 2005-12-01
KR20010006039A (en) 2001-01-15
WO1998045597A1 (en) 1998-10-15
JP2001521655A (en) 2001-11-06
EP0972134A1 (en) 2000-01-19
US6204693B1 (en) 2001-03-20
KR100564086B1 (en) 2006-03-27
DE19713981A1 (en) 1998-10-15

Similar Documents

Publication Publication Date Title
EP0393233B1 (en) Signal transmitting system
EP0543826B1 (en) Process and device for driving an electromagnetic consumer
DE3934577A1 (en) POWER SUPPLY DEVICE WITH INRED CURRENT LIMITATION
DE2644643A1 (en) VOLTAGE REGULATORS FOR GENERATORS IN MOTOR VEHICLES
DE19710073A1 (en) Device and method for surge protection
EP0972134B1 (en) Device for regulating the flow of electricity through a consumer
DE68928176T2 (en) Power semiconductor device
DE102004062032A1 (en) Circuit arrangement for rapid reduction of an induced current
DE19926079B4 (en) Device for detecting the state of combustion in an internal combustion engine
DE19652267A1 (en) Inductive coil ignition system for an engine
DE2829828A1 (en) IGNITION SYSTEM FOR AN INTERNAL COMBUSTION ENGINE
DE2754440A1 (en) CIRCUIT ARRANGEMENT FOR OVERVOLTAGE DISCONNECTION OF A PHASE-CONTROLLED VOLTAGE REGULATOR
EP0698794A1 (en) Under voltage detection circuit
EP0207086A1 (en) Circuit for monitoring the electric current supply of a consumer.
EP0671088A1 (en) CIRCUIT FOR CONTROLLING A SET OF RECEIVERS, IN PARTICULAR LAMP POWER REGULATORS.
DE3209070C2 (en) Circuit arrangement for switching electrical loads
DE69524139T2 (en) Selective power supply device for electrical consumers and ignition system of internal combustion engines in motor vehicles
DE4330114B4 (en) Circuit arrangement for controlling a plurality of consumers, in particular ballast for lamps
EP0164511B1 (en) Control circuit for detecting the passage of given level limits
DE112018008224T5 (en) Ion current detection circuit, ignition controller and ignition system
EP0014328B1 (en) Busy-circuit for the "incoming" c-conductor in a telecommunication device
DE3013474A1 (en) SENSOR SYSTEM
DE3248355A1 (en) Circuit arrangement for transmitting dial pulses in a telecommunication system, in particular a telephone system
DE69534510T2 (en) Actuator of an insulated gate high current switch and pulse switch using the same
DE1513364A1 (en) High current regulator with negative resistance

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: 19990917

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): DE FR GB IT

17Q First examination report despatched

Effective date: 20040525

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): DE FR GB IT

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.

Effective date: 20051026

Ref country code: GB

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20051026

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

REF Corresponds to:

Ref document number: 59813143

Country of ref document: DE

Date of ref document: 20051201

Kind code of ref document: P

GBV Gb: ep patent (uk) treated as always having been void in accordance with gb section 77(7)/1977 [no translation filed]

Effective date: 20051026

ET Fr: translation filed
PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

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

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed

Effective date: 20060727

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20090320

Year of fee payment: 12

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20090312

Year of fee payment: 12

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20101130

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20100331

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20101001