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1. 发明专利

DE19622625B4 Vorrichtung und Verfahren zum Diagnostizieren einer Verschlechterung oder einer Funktionsstörung eines Sauerstoffsensors 未知
公开(公告)号：DE19622625B4
公开(公告)日：2014-12-31
申请号：DE19622625
申请日：1996-06-05
申请人： DENSO CORP
发明人： MIZOGUCHI TOMOMICHI , TAKAMI MASAYUKI , OKAZAKI KAZUHIRO
IPC分类号： G01N27/409 , F02D41/14 , G01N27/417 , G01N33/00
摘要： Verfahren zum Diagnostizieren der Verschlechterung eines Sauerstoffsensors, von welchem ein Begrenzungsstrom entsprechend einer Sauerstoffkonzentration in Übereinstimmung mit einer Spannungsstromcharakteristik des Sauerstoffsensors als Antwort auf eine Abfragespannung ausgegeben wird, welche an dem Sauerstoffsensor angelegt wird, wenn der Wert der Abfragespannung in einem Begrenzungsstromerzeugungsgebiet gelegen ist, mit den Schritten: Ändern der an den Sauerstoffsensor angelegten Abfragespannung von einem ersten Wert auf einen zweiten Wert, welcher außerhalb des Begrenzungsstromerzeugungsgebiets gelegen ist, zur Ausgabe eines Abfragestroms von dem Sauerstoffsensor, wobei der Abfragestrom auf die Änderung der Abfragespannung sich zuerst sprunghaft ändert und dann konvergiert; Erfassen eines Spitzenstromwerts des Abfragestroms vor dem Konvergieren; Beurteilen, ob der Spitzenstromwert des Abfragestroms innerhalb eines normalen Bereichs liegt; und Diagnostizieren einer Verschlechterung des Sauerstoffsensors, wenn der Spitzenstromwert des Abfragestroms außerhalb des normalen Bereichs liegt.

2. 发明专利

DE19708011B4 未知
公开(公告)号：DE19708011B4
公开(公告)日：2009-12-03
申请号：DE19708011
申请日：1997-02-27
申请人： DENSO CORP
发明人： TAKAMI MASAYUKI , MIZOGUCHI TOMOMICHI , HASEDA SATOSHI , OKAZAKI KAZUHIRO , JONO KOJI
IPC分类号： G01N27/41 , G01N27/416 , F02D41/14 , G01N27/406 , G01N33/00

3. 发明专利

DE102007015497A1 Speech recognition device for use in vehicle, has memory medium for storing dictionary data structured in tree, where data contain multiple words as node in tree, and reverse-speech-comparison unit comparing reverse language 未知
公开(公告)号：DE102007015497A1
公开(公告)日：2007-10-04
申请号：DE102007015497
申请日：2007-03-30
申请人： DENSO CORP
发明人： HITOTSUMATSU TAKAFUMI , TAKAMI MASAYUKI
IPC分类号： G10L15/22 , G10L15/00
摘要： The device has a memory medium (77) for storing dictionary data structured in a tree, where the data contain multiple words as node in the tree. A reverse-speech-comparison unit (75) compares a reverse language, which results from a reproduction of an input speech in chronological reverse order. A forward-speech-comparison unit compares the input speech with an acoustic forward-model. An output unit (78) outputs a word or a word chain, based on the result of comparison of the reverse-speech-comparison unit and the forward-speech-comparison unit. An independent claim is also included for a computer program product in a computer-readable medium for use during the recognition of a speech.

4. 发明专利

GB2308452A Oxygen concentration and sensor temperature measuring system 未知
公开(公告)号：GB2308452A
公开(公告)日：1997-06-25
申请号：GB9626303
申请日：1996-12-18
申请人： DENSO CORP
发明人： TAKAMI MASAYUKI , HASEDA SATOSHI , MIZOGUCHI TOMOMICHI
IPC分类号： G01N27/41 , F02D41/14 , G01N27/406 , G01N27/419 , G01N27/409
摘要： Oxygen is determined by applying a positive voltage to the sensor and measuring the resulting threshold current, and temperature of the sensor is determined by applying a negative voltage to the sensor to detect the internal resistance of the oxygen sensor. To achieve change-over from detection of temperature to detection of oxygen in a short time, a transient voltage higher than the positive voltage is applied to the sensor to discharge or recharge electric charges due to electrostatic capacitance before the positive voltage is re-applied to the sensor. As a result, the time during which the threshold current cannot be detected is reduced.

5. 发明专利

DE19652059A1 未知
公开(公告)号：DE19652059A1
公开(公告)日：1997-06-19
申请号：DE19652059
申请日：1996-12-13
申请人： DENSO CORP
发明人： TAKAMI MASAYUKI , HASEDA SATOSHI , MIZOGUCHI TOMOMICHI
IPC分类号： G01N27/41 , F02D41/14 , G01N27/406 , G01N27/419 , G01N27/409
摘要： To achieve change-over from detection of an internal resistance of an oxygen sensor S to detection of a threshold current effectively in a short time, a positive desired voltage for measuring a threshold current is applied to an oxygen sensor S to detect the threshold current and then a negative voltage for measuring a temperature is applied to the oxygen sensor S for a short time to detect an internal resistance of the oxygen sensor. After that, when the voltage applied to the oxygen sensor S is restored to a positive desired voltage for measuring the threshold current, by applying a voltage higher than this positive desired voltage temporarily to the oxygen sensor S, discharge or recharge of electric charges due to electrostatic capacitance components of the oxygen sensor S is completed quickly to reduce the time required for convergence to the threshold current when the voltage is changed. As a result, it is possible to reduce the time during which the threshold current cannot be detected.

6. 发明专利

DE69729270T2 未知
公开(公告)号：DE69729270T2
公开(公告)日：2005-06-02
申请号：DE69729270
申请日：1997-12-23
申请人： DENSO CORP
发明人： OKAZAKI KAZUHIRO , HASEDA SATOSHI , JONO HIROSHI , TAKAMI MASAYUKI , MIZOGUCHI TOMOMICHI
IPC分类号： G01N27/41 , F02D41/14 , G01N27/26 , G01N27/407 , G01N27/406

7. 发明专利

DE19912469A1 Detecting element resistance of a gas resistance sensor, used e.g. for detecting oxygen concentration in internal combustion engine exhaust gas 未知
公开(公告)号：DE19912469A1
公开(公告)日：1999-09-23
申请号：DE19912469
申请日：1999-03-19
申请人： DENSO CORP
发明人： MIZOGUCHI TOMOMICHI , TAKAMI MASAYUKI
IPC分类号： G01N27/41 , G01N27/407 , G01N27/409
摘要： The element resistance of an element portion of a gas concentration sensor comprises: (1) applying a changing voltage having a given time constant to the element portion; (2) setting a detection timing before the changing voltage converges to a constant value; (3) detecting current change in the element portion due to the changing voltage at the detection timing; and (4) determining element resistance of the element portion based on the changing voltage and the current change. An Independent claim is included for an apparatus composed of: (1) a power supply supplying a changing voltage having a given time constant to the element portion; (2) a first circuit for determining whether an amount of a voltage having a given time constant to the element portion; (3) a second circuit which decide a detection of voltage change and current change being used for an element resistance detection, at a timing of the detection by the first circuit; and (4) a third circuit to detect the current change due to a voltage change of the changing voltage in response to detection by the second circuit.

8. 发明专利

DE102007015495B4 Objekterfassungsvorrichtung und Verfahren zum Extrahieren eines Bedienobjekts 未知
公开(公告)号：DE102007015495B4
公开(公告)日：2013-07-25
申请号：DE102007015495
申请日：2007-03-30
申请人： DENSO CORP
发明人： NIWA SHINJI , AICHI ISAO , TAKAMI MASAYUKI
IPC分类号： G06K9/62
摘要： Eine Objekterfassungsvorrichtung (5, 7) erfasst ein Bedienobjekt (B) zur Bedienung einer Bedienvorrichtung (1). Die Objekterfassungsvorrichtung (5, 7) weist einen Bildaufnahmeabschnitt (12) zum Aufnehmen des Bedienobjekts (B) und einen Bildprozessor zum Extrahieren des Bedienobjekts (B) auf. Das Bedienobjekt (B) weist eine erste Fläche, auf die von Außerhalb auf die Bedienvorrichtung (1) fallendes Außenlicht fällt, und eine der ersten Fläche gegenüberliegende zweite Fläche auf. Der Bildaufnahmeabschnitt (12) nimmt die zweite Fläche des Bedienobjekts (B) auf. Die Objekterfassungsvorrichtung (5, 7) kann das Bedienobjekt (B) selbst dann stabil erfassen, wenn sich die Beleuchtungsstärke des Außenlichts deutlich ändert.

9. 发明专利

DE19744439B4 未知
公开(公告)号：DE19744439B4
公开(公告)日：2008-01-31
申请号：DE19744439
申请日：1997-10-08
申请人： DENSO CORP
发明人： TAKAMI MASAYUKI , MIZOGUCHI TOMOMICHI , HASEDA SATOSHI , OKAZAKI KAZUHIRO
IPC分类号： G01N27/409 , G01N27/41 , G01N27/406 , G01N27/416
摘要： An A/F sensor is driven by a voltage applied thereto at a command issued by a microprocessor, outputting an A/F detection signal which is linearly proportional to the concentration of oxygen. The microprocessor controls the voltage applied to the A/F sensor to bring a current flowing through the A/F sensor to a predetermined value in a zone outside a predetermined air-fuel ratio detection zone. In this outside zone, the applied voltage is controlled in accordance with a characteristic different from a positive characteristic in a normal positive characteristic in a voltage-current relation. That is, in a rich zone outside the air-fuel ratio detection zone, the applied voltage is controlled so as to make the applied voltage approach a maximum value of the electromotive force of the A/F sensor. In a lean zone outside the air-fuel ratio detection zone, on the other hand, the applied voltage is controlled so as to make the applied voltage approach a minimum value of the electromotive force of the A/F sensor.

10. 发明专利

DE19826686B4 未知
公开(公告)号：DE19826686B4
公开(公告)日：2007-11-08
申请号：DE19826686
申请日：1998-06-16
申请人： DENSO CORP
发明人： MIZOGUCHI TOMOMICHI , TAKAMI MASAYUKI , NAKANO SYUICHI
IPC分类号： G01N27/407 , G01N27/41 , F02D41/14 , G01N27/417 , G01N27/419
摘要： A detecting unit of an oxygen sensor as an A/F sensor has a solid electrolyte layer and a diffusion resistance layer and generates a current value according to the concentration of oxygen in an exhaust gas by applying a voltage across electrodes on an exhaust gas side and an atmosphere side of the solid electrolyte layer. An oxygen supply/exhaust unit has a solid electrolyte layer and a pair of electrodes formed on both faces of the solid electrolyte layer, and supplies oxygen near to the electrode on the atmosphere side of the detecting unit or exhausts oxygen near the electrode. A control unit controls, in response to a limit current value detected by a current detection unit, the amount of supply or exhaust of oxygen of the oxygen supply/exhaust unit on the basis of the detected current value. A control target value of a current flowing in the solid electrolyte layer is variably set so that amount of oxygen moving in the solid electrolyte layers are equal, thereby controlling the amount of supply or exhaust of oxygen of the oxygen supply/exhaust unit.

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