公开(公告)号：DE10361033B4

公开(公告)日：2015-05-13

申请号：DE10361033

申请日：2003-12-23

Applicant: DENSO CORP

Inventor： HATADA YOSHIKAZU ,  YAMAMOTO NOBORU ,  SAKAI HIROYUKI

IPC: G01N27/407 ,  G01N27/419 ,  G01N27/416

Abstract: Gaskonzentrationsmessgerät (1), mit einem Gassensor (20), der eine Konzentration eines in einem zu messenden Gas enthaltenen spezifischen Gasbestandteils misst, und einem Messsubstrat (10), auf dem eine elektrische Schaltungsanordnung (108) ausgebildet ist, die eine Signalverarbeitungsschaltung (100) zur Messung eines von dem Gassensor (20) abgegebenen Sensorstroms aufweist, wobei die elektrische Schaltungsanordnung (108) umfasst: einen Verbindungsanschluss (181), dem der Sensorstrom von dem Gassensor (20) zugeführt wird, wobei der Verbindungsanschluss (181) eine Eingangsimpedanz von 500 k&OHgr; oder mehr aufweist, ein an dem Messsubstrat (10) angebrachtes elektrisches Bauteil, und ein Leiterbahnmuster (109a, 109b, 109c, 109d, 109e), das Leitfähigkeit aufweist und mit dem elektrischen Bauteil elektrisch verbunden ist, wobei das Leiterbahnmuster (109a, 109b, 109c, 109d, 109e) zumindest aufweist: ein Signaleingabemuster (110), das einen Teil der Signalverarbeitungsschaltung (100) bildet und in Bezug auf den Verbindungsanschluss (181) eine Gleichstromimpedanz aufweist, die 10% oder weniger der Eingangsimpedanz des Verbindungsanschlusses (181) beträgt, ein Differenzpotentialmuster (140) mit einer Potentialdifferenz von 2 V oder mehr in Bezug auf ein Potential des Signaleingabemusters (110), und ein Schutzmuster (120) mit einem konstanten Potential über einen gesamten Abschnitt davon und einer Potentialdifferenz von weniger als 0,5 V in Bezug auf das Potential des Signaleingabemusters (110), und wobei das Schutzmuster (120) in zumindest einem Teil des Messsubstrats (10) angeordnet ist, der zwischen dem Signaleingabemuster (110) und dem Differenzpotentialmuster (140) liegt, wobei das Leiterbahnmuster (109a, 109b, 109c, 109d, 109e) einen Leitungsweg mit einer Ausgangsimpedanz von 500 &OHgr; oder weniger zu einer Masse des Messsubstrats (10) bildet, wobei das Leiterbahnmuster (109a, 109b, 109c, 109d, 109e) ein einen Teil der Signalverarbeitungsschaltung (100) bildendes Signalmessmuster (111) aufweist, ...

公开(公告)号：DE60329645D1

公开(公告)日：2009-11-26

申请号：DE60329645

申请日：2003-03-10

Applicant: DENSO CORP

Inventor： YAMAMOTO NOBORU ,  KUNIEDA YUKIO

IPC: H05B41/24 ,  H05B41/288 ,  H05B41/285 ,  H05B41/38

Abstract: An electric discharge lamp device has a lighting start voltage storage circuit (320) for storing a lamp voltage immediately after the start of lighting of a lamp (2), and a change detection circuit (350) for detecting a change (”VL) in the lamp voltage by subtracting the lamp voltage immediately after the start of lighting of the lamp from the lamp voltage detected currently. The electric power supplied to the lamp (2) is controlled based upon the change (”VL) in the lamp voltage .

公开(公告)号：DE602004002648T2

公开(公告)日：2007-08-16

申请号：DE602004002648

申请日：2004-08-19

Applicant: DENSO CORP ,  TOYOTA MOTOR CO LTD

Inventor： YAMAMOTO NOBORU ,  KUNIEDA YUKIO ,  FUNAYAMA TOMOYUKI

IPC: H05B41/24 ,  H05B41/288 ,  H05B41/18

Abstract: The discharge lamp lighting apparatus includes a high-voltage generating coil connected in series to a discharge lamp for applying a high voltage to the discharge lamp to turn on the lamp, an inverter for inverting a dc voltage into an ac voltage in order to supply a lamp current to the discharge lamp on an alternating basis through the high voltage generating coil, a lamp voltage detecting circuit for detecting a voltage across the discharge lamp as a lamp voltage, and a lamp power control circuit for controlling an ac power supplied to the discharge lamp from the inverter on the basis of the lamp voltage detected by the lamp voltage detecting circuit. The lamp voltage detecting circuit detects the lamp voltage by subtracting a voltage in proportion to a sum of voltage drops across devices lying on a current path over which the lamp current flows other than the discharge lamp from a voltage in proportion to the dc voltage.

公开(公告)号：DE602004002648D1

公开(公告)日：2006-11-16

申请号：DE602004002648

申请日：2004-08-19

Applicant: DENSO CORP ,  TOYOTA MOTOR CO LTD

Inventor： YAMAMOTO NOBORU ,  KUNIEDA YUKIO ,  FUNAYAMA TOMOYUKI

IPC: H05B41/24 ,  H05B41/288 ,  H05B41/18

Abstract: The discharge lamp lighting apparatus includes a high-voltage generating coil connected in series to a discharge lamp for applying a high voltage to the discharge lamp to turn on the lamp, an inverter for inverting a dc voltage into an ac voltage in order to supply a lamp current to the discharge lamp on an alternating basis through the high voltage generating coil, a lamp voltage detecting circuit for detecting a voltage across the discharge lamp as a lamp voltage, and a lamp power control circuit for controlling an ac power supplied to the discharge lamp from the inverter on the basis of the lamp voltage detected by the lamp voltage detecting circuit. The lamp voltage detecting circuit detects the lamp voltage by subtracting a voltage in proportion to a sum of voltage drops across devices lying on a current path over which the lamp current flows other than the discharge lamp from a voltage in proportion to the dc voltage.

公开(公告)号：DE69915164D1

公开(公告)日：2004-04-08

申请号：DE69915164

申请日：1999-05-05

Applicant: DENSO CORP ,  KOITO MFG CO LTD

Inventor： YAMAMOTO NOBORU ,  OKUCHI HIROAKI ,  ODA GOICHI ,  NOYORI YASUSHI ,  FUNAYAMA TOMOYUKI

IPC: H05B41/04 ,  H05B41/292 ,  H05B41/285 ,  H05B41/392

Abstract: In a discharge lamp apparatus for a vehicle, it is determined that a grounded condition is present when a lamp voltage (VL) is less than a predetermined voltage and a lamp current (IL) is less than a predetermined current. Electric power supply to the lamp (2) is stopped temporarily in response to the determination of the grounded condition, and then the lighting operation is restarted again. If the grounded condition is determined again, the above operation is repeated. If this repetition continues for a predetermined period, the lighting operation is disabled continuously. In controlling the lamp (2), a voltage of a battery (1) is boosted by a transformer (41), which is turned on and off by a MOS transistor (42) so that electric power supplied to the lamp (2) is duty-controlled. An upper limit is set to the duty ratio, and the upper limit is increased as the lamp current decreases, so that the lighting characteristics of the lamp (2) is improved. A starter transformer (71) has a closed magnetic circuit core (701a), and is encased within a ballast casing (710), which is disposed under the lamp (2).

公开(公告)号：DE19654539A1

公开(公告)日：1997-07-03

申请号：DE19654539

申请日：1996-12-27

Applicant: DENSO CORP

Inventor： TOYAMA KOICHI ,  YAMAMOTO NOBORU

IPC: H05B41/24 ,  H05B41/282 ,  H05B41/288 ,  H05B41/38 ,  H05B41/29

Abstract: The discharge lamp (2) control circuit includes the warm-up power control circuit (112) with a time constant sub-circuit containing a condenser (111) which generates a voltage that determines the electrical power fed to the lamp and that changes in the direction of a given value in response to a current flowing in the condenser during the warm-up phase of the lamp. There is another circuit to generate a certain voltage after the warm-up phase. The warm-up circuit has a first voltage drop element (113) in the time constant part and the second circuit has a voltage drop sub-circuit containing a semiconducting switch (118) with a second voltage drop element (117), distinct from the first.

公开(公告)号：DE60045565D1

公开(公告)日：2011-03-03

申请号：DE60045565

申请日：2000-06-20

Applicant: DENSO CORP ,  KOITO MFG CO LTD

Inventor： YAMAMOTO NOBORU ,  HORII YASUTOSHI ,  OKUCHI HIROAKI ,  HIRAMATSU HIROMI ,  YONEIMA KENJI ,  KAJITA YUJI ,  ISHIKAWA MASAMICHI ,  ODA GOICHI ,  ICHIKAWA TOMOYUKI ,  HIRANAKA YUKINOBU ,  NOYORI YASUSHI

IPC: H05B41/285 ,  F21V19/00 ,  H02H5/04 ,  H03K17/16 ,  H05B41/02 ,  H05B41/288 ,  H05B41/292

公开(公告)号：DE69934659D1

公开(公告)日：2007-02-15

申请号：DE69934659

申请日：1999-11-08

Applicant: DENSO CORP

Inventor： OKUCHI HIROAKI ,  HIRAMATSU HIROMI ,  HORII YASUTOSHI ,  YAMAMOTO NOBORU

IPC: H05B41/04 ,  H05B41/288 ,  H05B41/38

Abstract: A shielding sheath covers the output cable which is provided for connecting the circuit unit including a starter transformer (13), and high voltage discharge lamp. A ground connector of the bus bar (23) which is connectable to ground side of the electrical power source, shielding sheath and base (26) are constructed to be grounded at one location under a condition that the circuit unit is accommodated with in the base.

公开(公告)号：DE69931080T2

公开(公告)日：2006-10-19

申请号：DE69931080

申请日：1999-11-08

Applicant: DENSO CORP

Inventor： OKUCHI HIROAKI ,  HIRAMATSU HIROMI ,  HORII YASUTOSHI ,  YAMAMOTO NOBORU

IPC: H05B41/04 ,  H05B41/02 ,  H05B41/288 ,  H05B41/38

Abstract: A shielding sheath covers the output cable which is provided for connecting the circuit unit including a starter transformer (13), and high voltage discharge lamp. A ground connector of the bus bar (23) which is connectable to ground side of the electrical power source, shielding sheath and base (26) are constructed to be grounded at one location under a condition that the circuit unit is accommodated with in the base.

公开(公告)号：DE69635465D1

公开(公告)日：2005-12-22

申请号：DE69635465

申请日：1996-09-06

Applicant: DENSO CORP

Inventor： YAMAMOTO NOBORU ,  YONEIMA KENJI ,  ISHIKAWA MASAMICHI ,  OKUCHI HIROAKI ,  HIRAMATSU HIROMI

IPC: F21V5/00 ,  G02B6/42 ,  H05B41/288 ,  H05B41/38 ,  H05B41/392 ,  F21V8/00 ,  B60Q1/00

Abstract: In a discharge lamp device, the electric power supplied to a discharge lamp is controlled in order of first to fourth control regions from the start of lighting of the discharge lamp. In the first control region, the lamp current is held constant until the lamp voltage reaches a first voltage value. In the second control region, the lamp current is reduced so as to have a correlation with a first time constant curve for a constant time after the lamp voltage reaches the first voltage value. In the third control region, the lamp current is reduced so as to have a correlation with a second time constant curve after a lapse of the constant time. The second time constant curve differs from the first time constant curve. In the fourth control region, a control value of the electric power supplied to the discharge lamp is free of a function of a lapse of time from the start of lighting of the discharge lamp, but is a function of at least the lamp voltage and the lamp current, and the electric power supplied to the discharge lamp is controlled by that control value. Through such a control, luminous flux is built up in a short time from the start of the lighting and an occurrence of overshoot or undershoot is minimized to a possible extent.