公开(公告)号：US10132774B2

公开(公告)日：2018-11-20

申请号：US14397793

申请日：2013-03-28

Applicant: NGK SPARK PLUG CO., LTD.

Inventor： Yu Akiyama ,  Yasuhiro Ishiguro ,  Tomohisa Terui ,  Kazuhisa Fujibayashi

IPC: G01N27/419 ,  G01N27/406 ,  G01N27/409 ,  G01N27/41 ,  G05B15/02 ,  G05D7/06

Abstract: A gas sensor control apparatus (3) includes first current detection means for detecting a first pump current flowing between second electrodes (19, 20) in a state in which an object gas has become a prescribed gas supply state, the temperature of a sensor section (10f) has become a first target temperature, and the voltage between first electrodes (21, 22) has become a first target voltage; second current detection means for detecting a second pump current flowing between the second electrodes in a state in which the object gas has become the prescribed gas supply state, the temperature of the sensor section has become a second target temperature, and the voltage between the first electrodes has become a second target voltage; and H2O gas concentration detection means for detecting the H2O gas concentration of the object gas on the basis of the first and second pump currents.

公开(公告)号：US09386633B2

公开(公告)日：2016-07-05

申请号：US14189540

申请日：2014-02-25

Applicant: NGK SPARK PLUG CO., LTD.

Inventor： Ai Igarashi ,  Hiroyuki Hayashi ,  Tomohisa Terui ,  Kaoru Hisada

IPC: H05B1/02

CPC classification number: H05B1/0247 ,  H05B1/023

Abstract: A heater control method and apparatus for a gas sensor which can quickly activate a detection element while reducing load due to heating even when a higher power supply voltage is applied. A heater element is connected to a power supply whose voltage is higher than 16 V, and power is supplied under PWM control such that a temperature rise of the heater element follows a temperature rise curve obtained when a voltage of 12 V is applied to the heater element. Even though a higher voltage is applied, the temperature rise per unit time during the ON time of the PWM control is decreased. This is because the ON time per cycle is shortened by increasing the PWM frequency to 30 Hz or higher. Thus, the temperature rise per cycle is kept low, whereby the temperature rise per 0.1 second is rendered less than 25° C.

Abstract translation: 一种用于气体传感器的加热器控制方法和装置，其可以在即使施加更高的电源电压的同时减少由于加热引起的负载而能够快速地启动检测元件。 加热器元件连接到电压高于16V的电源，并且在PWM控制下供电，使得加热器元件的温度升高遵循当对电加热器施加12V的电压时获得的升温曲线 元件。 即使施加较高的电压，在PWM控制的导通时间期间，每单位时间的温度上升降低。 这是因为通过将PWM频率提高到30Hz以上来缩短每个周期的导通时间。 因此，每个循环的温度升高保持低，从而每0.1秒的温度升高小于25℃。

公开(公告)号：US20130319857A1

公开(公告)日：2013-12-05

申请号：US13907248

申请日：2013-05-31

Applicant: NGK SPARK PLUG CO., LTD.

Inventor： Yasuhiro Ishiguro ,  Yu Akiyama ,  Tomohisa Terui ,  Kazuhisa Fujibayashi

IPC: G01N27/416

CPC classification number: G01N27/4162

Abstract: A gas sensor control apparatus (1) for a gas sensor (2) including an electromotive force cell (24) and a pump cell (14) includes current control means (69) for feedback-controlling the pump current Ip, voltage setting means S5, S13 for setting a target voltage Vr to either of first and second target voltage Vr1 and Vr2, and constant group setting means S4, S12 for setting a group of feedback control constants to a first group Kpid1 when the target voltage is Vr1 and to a second group Kpid2 when the target voltage is Vr2. The second group Kpid2 is determined such the pump current Ip becomes stable more quickly as compared with the case where the first group of control constants Kpid1 continues to be used.

Abstract translation: 一种用于气体传感器（2）的气体传感器控制装置（1），包括电动势单元（24）和泵单元（14），包括用于反馈控制泵浦电流Ip的电流控制装置（69），电压设定装置S5 ，用于将目标电压Vr设定为第一和第二目标电压Vr1和Vr2中的任一个的S13，以及当目标电压为Vr1时将一组反馈控制常数设置为第一组Kpid1的常数组设定装置S4，S12 第二组Kpid2当目标电压为Vr2时。 与第一组控制常数Kpid1继续使用的情况相比，确定第二组Kpid2使得泵浦电流Ip变得更稳定。

公开(公告)号：US09217726B2

公开(公告)日：2015-12-22

申请号：US13907248

申请日：2013-05-31

Applicant: NGK SPARK PLUG CO., LTD.

Inventor： Yasuhiro Ishiguro ,  Yu Akiyama ,  Tomohisa Terui ,  Kazuhisa Fujibayashi

IPC: G01N27/416

CPC classification number: G01N27/4162

Abstract: A gas sensor control apparatus (1) for a gas sensor (2) including an electromotive force cell (24) and a pump cell (14) includes current control means (69) for feedback-controlling the pump current Ip, voltage setting means S5, S13 for setting a target voltage Vr to either of first and second target voltage Vr1 and Vr2, and constant group setting means S4, S12 for setting a group of feedback control constants to a first group Kpid1 when the target voltage is Vr1 and to a second group Kpid2 when the target voltage is Vr2. The second group Kpid2 is determined such the pump current Ip becomes stable more quickly as compared with the case where the first group of control constants Kpid1 continues to be used.

Abstract translation: 一种用于气体传感器（2）的气体传感器控制装置（1），包括电动势单元（24）和泵单元（14），包括用于反馈控制泵浦电流Ip的电流控制装置（69），电压设定装置S5 ，用于将目标电压Vr设定为第一和第二目标电压Vr1和Vr2中的任一个的S13，以及当目标电压为Vr1时将一组反馈控制常数设定为第一组Kpid1的常数组设定装置S4，S12 第二组Kpid2当目标电压为Vr2时。 与第一组控制常数Kpid1继续使用的情况相比，确定第二组Kpid2使得泵浦电流Ip变得更稳定。