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1. 发明授权

US07671600B2 Gas concentration detection apparatus having function for detecting sensor element activation status 有权
标题翻译：具有检测传感器元件启动状态功能的气体浓度检测装置
公开(公告)号：US07671600B2
公开(公告)日：2010-03-02
申请号：US11907556
申请日：2007-10-15
申请人： Toshiyuki Suzuki , Tomoo Kawase , Eiichi Kurokawa , Yohei Kawaki
发明人： Toshiyuki Suzuki , Tomoo Kawase , Eiichi Kurokawa , Yohei Kawaki
IPC分类号： G01N27/62
CPC分类号： G01N27/407
摘要： A gas concentration detection apparatus includes a series-connected combination of a sensor element and a resistor, with an AC voltage being applied to one of the outer terminals of that combination and with the other outer terminal being held at a fixed potential. A DC voltage signal at a level determined by an oxygen concentration that is detected by the sensor element, and an AC voltage signal at an amplitude determined by sensor element impedance and hence by the sensor element activation status, are extracted from the series-connected combination by respectively separate circuits which apply separately determined amplification factors.
摘要翻译：气体浓度检测装置包括传感器元件和电阻器的串联组合，其中AC电压被施加到该组合的外部端子之一，而另一个外部端子被保持在固定电位。由传感器元件检测到的由氧浓度确定的水平的直流电压信号和由传感器元件阻抗确定的振幅以及因此由传感器元件启动状态确定的交流电压信号从串联连接的组合分别分别应用单独确定的放大因子的电路。

2. 发明授权

US08257565B2 Sensor control apparatus 有权
标题翻译：传感器控制装置
公开(公告)号：US08257565B2
公开(公告)日：2012-09-04
申请号：US12035206
申请日：2008-02-21
申请人： Tomoo Kawase , Eiichi Kurokawa , Toshiyuki Suzuki , Yohei Kawaki
发明人： Tomoo Kawase , Eiichi Kurokawa , Toshiyuki Suzuki , Yohei Kawaki
IPC分类号： G01N27/26 , G01N7/00
CPC分类号： G01N27/4065
摘要： A sensor control apparatus includes an applied voltage control circuit connected to the positive terminal of a sensor element. The applied voltage control circuit includes a reference power supply and a noninverting amplifier circuit connected to the reference power supply. An AC power supply circuit, a buffer and a current measurement resistance are connected in series to the negative terminal of the sensor element with the current measurement resistance disposed between the AC power supply circuit and the sensor element. One terminal of the current measurement resistance, which is on the side opposite to the sensor element, is held at a reference voltage (center voltage of an AC voltage generated from the AC power supply circuit). Voltage at an intermediate point between the current measurement resistance and the sensor element is inputted via a low-pass filter to the noninverting amplifier circuit of the applied voltage control circuit.
摘要翻译：传感器控制装置包括连接到传感器元件的正极端子的施加的电压控制电路。所施加的电压控制电路包括参考电源和连接到参考电源的同相放大器电路。交流电源电路，缓冲器和电流测量电阻与传感器元件的负极端子串联连接，电流测量电阻设置在交流电源电路和传感器元件之间。在与传感器元件相反的一侧的电流测量电阻的一个端子被保持在参考电压（由AC电源电路产生的AC电压的中心电压）。通过低通滤波器将电流测量电阻与传感器元件之间的中间点处的电压输入到所施加的电压控制电路的同相放大器电路。

3. 发明申请

US20080196480A1 SENSOR CONTROL APPARATUS 有权
标题翻译：传感器控制装置
公开(公告)号：US20080196480A1
公开(公告)日：2008-08-21
申请号：US12035206
申请日：2008-02-21
申请人： Tomoo KAWASE , Eiichi Kurokawa , Toshiyuki Suzuki , Yohei Kawaki
发明人： Tomoo KAWASE , Eiichi Kurokawa , Toshiyuki Suzuki , Yohei Kawaki
IPC分类号： G01N7/00
CPC分类号： G01N27/4065
摘要： A sensor control apparatus includes an applied voltage control circuit connected to the positive terminal of a sensor element. The applied voltage control circuit includes a reference power supply and a noninverting amplifier circuit connected to the reference power supply. An AC power supply circuit, a buffer and a current measurement resistance are connected in series to the negative terminal of the sensor element with the current measurement resistance disposed between the AC power supply circuit and the sensor element. One terminal of the current measurement resistance, which is on the side opposite to the sensor element, is held at a reference voltage (center voltage of an AC voltage generated from the AC power supply circuit). Voltage at an intermediate point between the current measurement resistance and the sensor element is inputted via a low-pass filter to the noninverting amplifier circuit of the applied voltage control circuit.
摘要翻译：传感器控制装置包括连接到传感器元件的正极端子的施加的电压控制电路。所施加的电压控制电路包括参考电源和连接到参考电源的同相放大器电路。交流电源电路，缓冲器和电流测量电阻与传感器元件的负极端子串联连接，电流测量电阻设置在交流电源电路和传感器元件之间。在与传感器元件相反的一侧的电流测量电阻的一个端子被保持在参考电压（由AC电源电路产生的AC电压的中心电压）。通过低通滤波器将电流测量电阻与传感器元件之间的中间点处的电压输入到所施加的电压控制电路的同相放大器电路。

4. 发明授权

US08052863B2 Gas sensor control apparatus designed to ensure accuracy of measurement in gas sensor 有权
标题翻译：设计用于确保气体传感器测量精度的气体传感器控制装置
公开(公告)号：US08052863B2
公开(公告)日：2011-11-08
申请号：US12034078
申请日：2008-02-20
申请人： Toshiyuki Suzuki , Tomoo Kawase , Eiichi Kurokawa , Yohei Kawaki
发明人： Toshiyuki Suzuki , Tomoo Kawase , Eiichi Kurokawa , Yohei Kawaki
IPC分类号： G01N27/417
CPC分类号： G01N27/4175
摘要： The gas sensor control apparatus develops a first voltage based on a first reference voltage at a negative terminal of a gas sensor device through a resistor and a second voltage based on a second reference voltage at a positive terminal of the gas sensor device. A controller samples through the resistor a sensor current, as created upon the development of the first and second voltage for measuring the concentration of gas. When the impedance of the gas sensor device is measured, the controller alternates the first voltage across the first reference voltage. The value (i.e., a zero-point) of the voltage applied to the gas sensor device when the sensor current is zero (i.e., 0 mA) depends upon the first and second reference voltages. The zero-point is corrected by regulating the second reference voltage to match an applying voltage characteristic to the gas sensor device correctly.
摘要翻译：气体传感器控制装置通过电阻器在气体传感器装置的负极端子处基于第一参考电压产生第一电压，并且在气体传感器装置的正端处基于第二参考电压产生第二电压。控制器通过电阻器对传感器电流进行采样，这是根据开发用于测量气体浓度的第一和第二电压产生的。当测量气体传感器装置的阻抗时，控制器交替跨越第一参考电压的第一电压。当传感器电流为零（即0mA）时施加到气体传感器装置的电压的值（即，零点）取决于第一和第二参考电压。通过调节第二参考电压以正确地对气体传感器装置施加施加电压特性来校正零点。

5. 发明申请

US20080094079A1 Gas concentration detection apparatus having function for detecting sensor element activation status 有权
标题翻译：具有检测传感器元件启动状态功能的气体浓度检测装置
公开(公告)号：US20080094079A1
公开(公告)日：2008-04-24
申请号：US11907556
申请日：2007-10-15
申请人： Toshiyuki Suzuki , Tomoo Kawase , Eiichi Kurokawa , Yohei Kawaki
发明人： Toshiyuki Suzuki , Tomoo Kawase , Eiichi Kurokawa , Yohei Kawaki
IPC分类号： G01N27/02
CPC分类号： G01N27/407
摘要： A gas concentration detection apparatus includes a series-connected combination of a sensor element and a resistor, with an AC voltage being applied to one of the outer terminals of that combination and with the other outer terminal being held at a fixed potential. A DC voltage signal at a level determined by an oxygen concentration that is detected by the sensor element, and an AC voltage signal at an amplitude determined by sensor element impedance and hence by the sensor element activation status, are extracted from the series-connected combination by respectively separate circuits which apply separately determined amplification factors.
摘要翻译：气体浓度检测装置包括传感器元件和电阻器的串联组合，其中AC电压被施加到该组合的外部端子之一，而另一个外部端子被保持在固定电位。由传感器元件检测到的由氧浓度确定的水平的直流电压信号和由传感器元件阻抗确定的振幅以及因此由传感器元件启动状态确定的交流电压信号从串联连接的组合分别分别应用单独确定的放大因子的电路。

6. 发明授权

US07981265B2 Gas concentration measuring apparatus designed to enhance measurement accuracy in desired range 有权
标题翻译：气体浓度测量仪设计用于提高所需范围内的测量精度
公开(公告)号：US07981265B2
公开(公告)日：2011-07-19
申请号：US11797961
申请日：2007-05-09
申请人： Tomoo Kawase , Eiichi Kurokawa , Satoshi Hada , Toshiyuki Suzuki , Katsuhide Akimoto
发明人： Tomoo Kawase , Eiichi Kurokawa , Satoshi Hada , Toshiyuki Suzuki , Katsuhide Akimoto
IPC分类号： G01N27/41
CPC分类号： G01N27/419 , F02D41/1454 , F02D41/28 , G01R1/203 , G01R15/08 , G01R19/0092
摘要： A gas concentration measuring apparatus for use in air-fuel ratio control of automotive engines is designed to determine the concentration of oxygen within a wide and a narrow range using a sensor current flowing through a sensor element. The apparatus includes an amplifier circuit equipped with an operational amplifier and a plurality of amplifying resistors and a switch. The switch is responsive to a request signal to switch a relation in electrical connection between an operational amplifier and the amplifying resistors to distribute the amplifying resistors into an input resistor and a feedback resistor for the operational amplifier to change an amplification factor of the amplifier circuit. This results in a change in resolution of measurement of the concentration of oxygen, thereby ensuring enhanced accuracy in determining the concentration of oxygen in a selected one of the narrow and wide ranges.
摘要翻译：用于汽车发动机的空燃比控制的气体浓度测量装置设计成使用流过传感器元件的传感器电流来确定宽范围和窄范围内的氧浓度。该装置包括配备有运算放大器和多个放大电阻器和开关的放大器电路。开关响应于请求信号以在运算放大器和放大电阻之间的电气连接中切换关系，以将放大电阻器分配到输入电阻器和用于运算放大器的反馈电阻器以改变放大器电路的放大系数。这导致测量氧浓度的分辨率的变化，从而确保在选定的窄范围和宽范围内确定氧气浓度的提高的准确性。

7. 发明授权

US06868712B2 Control method for gas concentration sensor 有权
标题翻译：气体浓度传感器控制方法
公开(公告)号：US06868712B2
公开(公告)日：2005-03-22
申请号：US10032582
申请日：2002-01-02
申请人： Satoshi Hada , Eiichi Kurokawa , Toshiyuki Suzuki , Tomoo Kawase , Satoshi Haseda
发明人： Satoshi Hada , Eiichi Kurokawa , Toshiyuki Suzuki , Tomoo Kawase , Satoshi Haseda
IPC分类号： G01N27/41 , F02D41/14 , G01D18/00 , G01N19/10 , G01N21/00 , G01N25/00 , G01N27/00
CPC分类号： F02D41/1495 , F02D41/1456 , Y10T436/218
摘要： An A/F signal proportional to an oxygen concentration in the exhaust gas from an internal combustion engine is output upon application of a voltage based on an instruction from a microcomputer. At the time an element resistance is detected, a bias instruction signal Vr from the microcomputer is converted by a D/A converter 21 to an analog signal Vb. An output voltage Vc obtained by removing high frequency components from the analog signal Vb through an LPF 22 is input to a bias control circuit 40. During this time period in which the element resistance is detected, an accurate A/F signal is not output. Therefore, the A/F signal that has theretofore prevailed is held by a Sample/Hold circuit 70 to thereby prevent the use of an erroneous A/F signal. Namely, at the time of detecting the element resistance, the detected value of the oxygen concentration is prevented from becoming abnormal. As a result, an accurate A/F control can be executed using the detected element resistance.
摘要翻译：与来自内燃机的废气中的氧气浓度成比例的A / F信号是在基于微型计算机的指令施加电压时输出的。在检测到元件电阻时，来自微型计算机的偏置指令信号Vr由D / A转换器21转换成模拟信号Vb。将通过LPF22从模拟信号Vb除去高频分量而获得的输出电压Vc输入到偏置控制电路40.在检测到元件电阻的该时间段期间，不输出精确的A / F信号。因此，由采样/保持电路70保持已经存在的A / F信号，从而防止使用错误的A / F信号。也就是说，在检测元件电阻时，防止氧浓度的检测值变得异常。结果，可以使用检测到的元件电阻来执行精确的A / F控制。

8. 发明授权

US06347544B1 Control method for gas concentration sensor 失效
公开(公告)号：US06347544B1
公开(公告)日：2002-02-19
申请号：US09064163
申请日：1998-04-22
申请人： Satoshi Hada , Eiichi Kurokawa , Toshiyuki Suzuki , Tomoo Kawase , Satoshi Haseda
发明人： Satoshi Hada , Eiichi Kurokawa , Toshiyuki Suzuki , Tomoo Kawase , Satoshi Haseda
IPC分类号： G01N2700
CPC分类号： F02D41/1495 , F02D41/1456 , Y10T436/218
摘要： An A/F signal proportional to an oxygen concentration in the exhaust gas from an internal combustion engine is output upon application of a voltage based on an instruction from a microcomputer. At the time an element resistance is detected, a bias instruction signal Vr from the microcomputer is converted by a D/A converter 21 to an analog signal Vb. An output voltage Vc obtained by removing high frequency components from the analog signal Vb through an LPF 22 is input to a bias control circuit 40. During this time period in which the element resistance is detected, an accurate A/F signal is not output. Therefore, the A/F signal that has theretofore prevailed is held by a Sample/Hold circuit 70 to thereby prevent the use of an erroneous A/F signal. Namely, at the time of detecting the element resistance, the detected value of the oxygen concentration is prevented from becoming abnormal. As a result, an accurate A/F control can be executed using the detected element resistance.

9. 发明授权

US06226861B1 Method and apparatus for gas concentration detection and manufacturing method of the apparatus 有权
标题翻译：气体浓度检测方法及装置及其制造方法
公开(公告)号：US06226861B1
公开(公告)日：2001-05-08
申请号：US09370896
申请日：1999-08-10
申请人： Eiichi Kurokawa , Satoshi Hada , Tomoo Kawase , Toshiyuki Suzuki , Satoshi Haseda
发明人： Eiichi Kurokawa , Satoshi Hada , Tomoo Kawase , Toshiyuki Suzuki , Satoshi Haseda
IPC分类号： H05B300
CPC分类号： G01N27/4065 , Y10T29/49004 , Y10T29/49083 , Y10T29/49101
摘要： An A/F sensor generates a current signal corresponding to an air-fuel ratio in response to a voltage applied by a bias control circuit. After a sensor current is received as a voltage signal via a voltage follower, it is outputted to an A/D converter having a predetermined input voltage range, 0 to 5V. A sensor current detection circuit has a plurality of current detection resistors. In order to variably set the resistance value by the sensor current detection circuit, a switch circuit is switched in accordance with the sensor current depending on whether the A/F value to be detected is in the zone near the stoichiometric ratio or in other air-fuel ratio zones.
摘要翻译：响应于由偏置控制电路施加的电压，A / F传感器产生对应于空燃比的电流信号。在通过电压跟随器接收到作为电压信号的传感器电流之后，将其输出到具有0至5V的预定输入电压范围的A / D转换器。传感器电流检测电路具有多个电流检测电阻。为了通过传感器电流检测电路可变地设置电阻值，根据检测的A / F值是否处于接近化学计量比的区域或其他空气 - 电流检测电路中，根据传感器电流切换开关电路，燃料比区。

10. 发明授权

US07955494B2 Gas sensor control apparatus 有权
标题翻译：气体传感器控制装置
公开(公告)号：US07955494B2
公开(公告)日：2011-06-07
申请号：US12212121
申请日：2008-09-17
申请人： Tomoo Kawase , Eiichi Kurokawa , Toshiyuki Suzuki , Takahito Masuko
发明人： Tomoo Kawase , Eiichi Kurokawa , Toshiyuki Suzuki , Takahito Masuko
IPC分类号： G01N27/417
CPC分类号： G01N27/4065
摘要： The gas sensor control apparatus is for controlling a gas sensor including a sensor element having a solid electrolyte layer, and first and second electrodes located on opposite sides of the solid electrolyte layer, the first electrode serving as a gas detecting electrode, the second electrode serving as a reference electrode, the sensor element generating, as a sensor output, a current flowing between the first and second electrodes having a value depending on concentration of a specific gas component contained in a gas under measurement. The gas sensor control apparatus includes a determination function of determining whether or not it is time for the gas sensor to start operation, and a control function of forcibly supplying oxygen from a side of the second electrode to a side of the first electrode on a temporary basis when a determination result of the first function becomes affirmative.
摘要翻译：气体传感器控制装置用于控制包括具有固体电解质层的传感器元件的气体传感器和位于固体电解质层的相对侧的第一和第二电极，用作气体检测电极的第一电极，作为参考电极，传感器元件作为传感器输出产生在第一和第二电极之间流动的电流，其具有取决于测量气体中所含的特定气体成分的浓度的值。气体传感器控制装置具有确定气体传感器是否开始运转的判定功能，以及从第二电极侧向第一电极一侧强制供给氧的控制功能，当第一功能的确定结果变得肯定时的基础。

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