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公开(公告)号：US20120262182A1
公开(公告)日：2012-10-18
申请号：US13444057
申请日：2012-04-11
IPC分类号： G01N27/66
CPC分类号： G01N15/0656 , F01N2560/05
摘要： There is provided a fine particle detection system with a fine particle sensor, a cable and a sensor drive control device. The fine particle sensor has an ion source unit with first and second electrodes, a particle charging unit and inner and outer sensor casings. The cable has a power supply wiring line connected to the second electrode, an inner shield line electrically continuous with the inner sensor casing and an outer shield line electrically continuous with the outer sensor casing. The sensor drive control device has an ion-source power supply circuit, a signal current detection circuit, an inner circuit casing electrically continuous with a first output terminal of the ion-source power supply circuit and surrounding the ion-source power supply circuit and an outer circuit casing connected to the ground potential and shielding the ion-source power supply circuit, the signal current detection circuit and the inner circuit casing.
摘要翻译： 提供了具有细颗粒传感器，电缆和传感器驱动控制装置的精细粒子检测系统。 微粒传感器具有带有第一和第二电极的离子源单元，粒子充电单元和内部和外部传感器外壳。 电缆具有与第二电极连接的电源配线，与内传感器外壳电连接的内屏蔽线和与外传感器外壳电气连接的外屏蔽线。 传感器驱动控制装置具有离子源电源电路，信号电流检测电路，与离子源电源电路的第一输出端子电连接并且包围离子源电源电路的内部电路壳体，以及 外部电路壳体连接到地电位并屏蔽离子源电源电路，信号电流检测电路和内部电路外壳。
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公开(公告)号：US06714876B2
公开(公告)日：2004-03-30
申请号：US09793506
申请日：2001-02-27
申请人： Yuji Kimoto , Toshiya Matsuoka
发明人： Yuji Kimoto , Toshiya Matsuoka
IPC分类号： G06F1900
CPC分类号： G01N27/122
摘要： A control system for a gas sensor element capable of lessening the effect of variations in sensor properties among gas sensor elements as well as the effect of environmental factors, such as temperature and humidity, to thereby accurately detect variation in the concentration of a specific gas. In a control system 10 for a gas sensor element 11 whose sensor resistance Rs varies with the concentration of NOx gas, a pulse signal Sc which alternates between 0 V and +5 V is input to a pulse input terminal 17. When a voltage of 5 V is applied to the pulse input terminal 17, a capacitor 14 is charged via a fixed resistor 15 having a resistance Rc and a diode 16. When a voltage of 0 V is applied, the capacitor 14 discharges via the gas sensor element 11. An output voltage Vout is A/D-converted and processed by means of a microcomputer 20, thereby controlling an electronic control assembly 21. The potential Vout at an operating point Pd varies with the sensor resistance Rs as well as with the duty ratio DT of the pulse signal Sc. Thus, the output voltage Vout can be maintained within a predetermined range by adjusting the duty ratio.
摘要翻译： 一种用于气体传感器元件的控制系统，其能够减小气体传感器元件之间的传感器特性变化的影响以及诸如温度和湿度的环境因素的影响，从而精确地检测特定气体的浓度变化。 在传感器电阻Rs随着NOx气体的浓度而变化的气体传感器元件11的控制系统10中，在0V和+ 5V之间交替的脉冲信号Sc被输入到脉冲输入端17.当电压为5 V被施加到脉冲输入端子17，电容器14通过具有电阻Rc和二极管16的固定电阻器15充电。当施加0V的电压时，电容器14经由气体传感器元件11放电。 输出电压Vout通过微型计算机20进行A / D转换和处理，从而控制电子控制组件21.工作点Pd处的电位Vout随传感器电阻Rs以及占空比DT而变化 脉冲信号Sc。 因此，通过调整占空比，能够将输出电压Vout保持在规定的范围内。
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3.发明授权Method of and apparatus for detecting a deteriorated condition of a wide range air-fuel ratio sensor 失效用于检测大范围空燃比传感器劣化状况的方法和装置
公开(公告)号：US6099717A
公开(公告)日：2000-08-08
申请号：US965420
申请日：1997-11-06
申请人： Tessho Yamada , Takeshi Kawai , Yuji Oi , Shigeki Mori , Satoshi Teramoto , Toshiya Matsuoka
发明人： Tessho Yamada , Takeshi Kawai , Yuji Oi , Shigeki Mori , Satoshi Teramoto , Toshiya Matsuoka
IPC分类号： F02D41/14 , G01N27/407
CPC分类号： F02D41/1495 , F02D41/1474 , F02D41/1476
摘要： A method of detecting a deteriorated condition of a wide range air-fuel ratio sensor is provided. Firstly, a current is applied to an electromotive force cell to detect a voltage Vs0 across electrodes on opposite side surfaces of the cell. Application of the current is suspended, and a voltage drop Vsd1 across the electrodes is detected after lapse of a time ranging from 10 .mu.s to 1 ms after the application of the current is suspended. Based on the voltage drop Vsd1 is detected a first resistance value Rvs1 equated to the temperature of the electromotive force cell. Further, after lapse of a time ranging from 10 ms to 50 ms after the application of the current to the electromotive force cell is suspended, a voltage drop Vsd2 across the electrodes of the electromotive force cell is detected. Based on the voltage drop Vsd2 is detected a second resistance value Rvs2 equated to an internal resistance of the electromotive force cell including a resistance component resulting from deterioration. By comparison of the resistance values Rvs1 and Rvs2, the deteriorated condition of the wide range air-fuel ratio is detected. An apparatus for carrying out such a method is also provided.
摘要翻译： 提供了一种检测宽范围空燃比传感器劣化状况的方法。 首先，将电流施加到电动势单元以检测电池的相对侧表面上的电极之间的电压Vs0。 电流的施加被暂停，在暂停施加电流之后经过10μs至1ms的时间之后，检测电极两端的电压降Vsd1。 基于电压降Vsd1，检测到等于电动势单元的温度的第一电阻值Rvs1。 此外，在将电流施加到电动势电池之后经过了10ms至50ms的时间之后，检测到电动势单元的电极两端的电压降Vsd2。 基于电压降Vsd2，检测到等于包括由劣化导致的电阻分量的电动势单元的内部电阻的第二电阻值Rvs2。 通过比较电阻值Rvs1和Rvs2，检测宽范围空燃比的恶化条件。 还提供了一种用于执行这种方法的设备。
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公开(公告)号：US08652240B2
公开(公告)日：2014-02-18
申请号：US13422379
申请日：2012-03-16
IPC分类号： B03C3/34
CPC分类号： G01N15/0656 , F01N13/008 , F01N2560/05 , G01N1/2252
摘要： There is provided a fine particle sensor for detecting fine particles in exhaust gas, including an ion generating unit for generating ions by corona discharge, a charging unit for charging the fine particles by some of the generated ions, an ion trapping unit for trapping a remainder of the generated ions and a casing for accommodating therein the charging unit and the ion trapping unit in a given arrangement direction. The casing has a gas inlet hole and a gas outlet hole formed in a circumferential wall thereof so that the exhaust gas flows in the charging unit through the gas inlet hole and flows out of the ion trapping unit through the gas outlet hole. The gas inlet hole and the gas outlet hole are arranged in such a manner as to at least partially overlap each other when viewed in the given arrangement direction.
摘要翻译： 提供了一种用于检测废气中的微粒的细粒子传感器，包括用于通过电晕放电产生离子的离子产生单元，用于通过一些所产生的离子对微粒进行充电的充电单元，用于捕获剩余部分的离子捕获单元 的产生的离子，以及用于在给定的布置方向上容纳充电单元和离子捕获单元的壳体。 壳体具有形成在其周壁中的气体入口孔和气体出口孔，使得废气通过气体入口孔在充电单元中流动，并通过气体出口孔流出离子捕获单元。 气体入口孔和气体出口孔以在给定的布置方向上观察时至少部分地彼此重叠的方式布置。
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公开(公告)号：US06859737B2
公开(公告)日：2005-02-22
申请号：US10305358
申请日：2002-11-27
申请人： Yuji Kimoto , Toshiya Matsuoka
发明人： Yuji Kimoto , Toshiya Matsuoka
IPC分类号： G01N27/12 , B60H1/24 , G01N27/407 , G01N33/00 , G06F19/00
CPC分类号： G01N33/0065 , G01N27/12
摘要： A gas detection apparatus incorporating a gas sensor element and a vehicle automatic ventilation system including the apparatus in which a sensor output value S(n) is obtained, and a base value B(n) is calculated by use of Expression (1): B(n)=B(n−1)+k1[S(n)−B(n−1)]−k2[S(n)−S(n−5)] in the case where S(n)≧B(n−1), or by use of Expression (3): B(n)=S(n) in the case where S(n)
摘要翻译： 包含气体传感器元件的气体检测装置和包括其中获得传感器输出值S（n）的装置和基准值B（n）的车辆自动通风系统通过使用表达式（1）计算：B （n）=（n-1）+ k1 [S（n）-B（n-1）] -k2 [S（n）-S（n-5） 或者在S（n）
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公开(公告)号：US6120677A
公开(公告)日：2000-09-19
申请号：US903940
申请日：1997-07-31
申请人： Tessho Yamada , Takeshi Kawai , Yuji Oi , Shigeki Mori , Satoshi Teramoto , Toshiya Matsuoka
发明人： Tessho Yamada , Takeshi Kawai , Yuji Oi , Shigeki Mori , Satoshi Teramoto , Toshiya Matsuoka
IPC分类号： F02D41/14 , G01N27/406 , G01N27/407
CPC分类号： G01N27/4065 , F02D41/1494
摘要： A constant current Iconst is applied to an electromotive force cell which is interposed between a gap (measurement chamber) of a fixed atmosphere and an oxygen reference chamber of a constant oxygen content, for measurement of a resistance value of the electromotive force cell, whereby the resistance value can be measured accurately irrespective of an oxygen content in an atmosphere to be measured by an oxygen sensor element or cell unit. The resistance value of the electromotive force cell is measured at a predetermined timing T2 after application of a current is started, so that a measure resistance value is free of a variation of a resistance value due to deterioration of porous electrodes of an electromotive force cell, such a variation being included in the measured resistance value in case the measurement is done by using an AC current, and therefore accurate measurement can be attained. A temperature control methods and a temperature control apparatus for an oxygen sensor, capable of detecting the temperature accurately without suspending measurement of an oxygen content for a long period of time are also provided. Further, a temperature control method and a temperature control apparatus for an oxygen sensor, capable of detecting not only the temperature of the electromotive force cell but the temperature of the pump cell by applying a current or voltage to the electromotive force cell are provided.
摘要翻译： 将恒定电流Iconst应用于介于固定气氛的间隙（测量室）和恒定氧含量的氧气参考室之间的电动势单元，用于测量电动势单元的电阻值，由此 可以精确地测量电阻值，而不管氧传感器元件或电池单元测量的气氛中的氧含量如何。 在施加电流开始之后，在预定定时T2测量电动势电池的电阻值，使得测量电阻值不会由于电动势电池的多孔电极的劣化而导致的电阻值的变化， 在通过使用AC电流进行测量的情况下，这种变化被包括在测量的电阻值中，因此可以获得精确的测量。 还提供了一种用于氧传感器的温度控制方法和温度控制装置，其能够准确地检测温度而不长时间地测量氧气含量。 此外，提供了一种用于氧传感器的温度控制方法和温度控制装置，其不仅可以通过向电动势单元施加电流或电压来检测电动势单元的温度，而且可以检测泵室的温度。
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公开(公告)号：US20120234172A1
公开(公告)日：2012-09-20
申请号：US13422379
申请日：2012-03-16
IPC分类号： B03C3/38
CPC分类号： G01N15/0656 , F01N13/008 , F01N2560/05 , G01N1/2252
摘要： There is provided a fine particle sensor for detecting fine particles in exhaust gas, including an ion generating unit for generating ions by corona discharge, a charging unit for charging the fine particles by some of the generated ions, an ion trapping ions for trapping a remainder of the generated ions and a casing for accommodating therein the charging unit and the ion trapping unit in a given arrangement direction. The casing has a gas inlet hole and a gas outlet hole formed in a circumferential wall thereof so that the exhaust gas flows in the charging unit through the gas inlet hole and flows out of the ion trapping unit through the gas outlet hole. The gas inlet hole and the gas outlet hole are arranged in such a manner as to at least partially overlap each other when viewed in the given arrangement direction.
摘要翻译： 提供了一种用于检测排气中的细颗粒的微粒传感器，包括用于通过电晕放电产生离子的离子产生单元，用于通过一些所产生的离子对微粒进行充电的充电单元，用于捕获剩余部分的离子捕获离子 的产生的离子，以及用于在给定的布置方向上容纳充电单元和离子捕获单元的壳体。 壳体具有形成在其周壁中的气体入口孔和气体出口孔，使得废气通过气体入口孔在充电单元中流动，并通过气体出口孔流出离子捕获单元。 气体入口孔和气体出口孔以在给定的布置方向上观察时至少部分地彼此重叠的方式布置。
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公开(公告)号：US07266459B2
公开(公告)日：2007-09-04
申请号：US10048535
申请日：2001-05-28
申请人： Yuji Kimoto , Toshiya Matsuoka
发明人： Yuji Kimoto , Toshiya Matsuoka
IPC分类号： G06F15/00
CPC分类号： B60H1/008 , B60H3/0085 , G01N33/0037 , G01N33/0065 , Y02A50/245
摘要： It is an object of the invention to provide a gas detecting device capable of relieving the influence of an environment such as a temperature, a humidity or a wind velocity to detect a change in a concentration of a specific gas and an autoventilation system for a vehicle using the gas detecting device.More specifically, a gas detecting device (10) using a gas sensor element (11) changing a sensor resistance Rs depending on a concentration of a gas such as NOx and an autoventilation system (100) for a vehicle according to the invention A/D convert the output of a sensor resistance value converting circuit (14) to acquire a sensor output value S(n), calculates a base value B(n) based on B(n)=B(n−1)+k1{S(n)−B(n−1)}, and furthermore, calculates a difference value of D(n)=S(n)−B(n). When the concentration of the gas is increased so that the difference value becomes greater than a predetermined concentration threshold, a high concentration signal is generated to close a flap (34) and a base value B(n) is calculated by using a coefficient k2 which is smaller than k1 based on B(n)=B(n−1)+k2{S(n)−B(n−1)}.
摘要翻译： 本发明的目的是提供一种能够缓解诸如温度，湿度或风速等环境的影响的气体检测装置，以检测特定气体和车辆的自动换气系统的浓度变化 使用气体检测装置。 更具体地，使用根据本发明的车辆的NOx浓度和根据本发明的自动换气系统（100））来改变传感器电阻Rs的气体传感器元件（11）的气体检测装置（10） 转换传感器电阻值转换电路（14）的输出以获得传感器输出值S（n），基于B（n）= B（n-1）+ k 1 {S （n）-B（n-1）}，并且还计算D（n）= S（n）-B（n）的差值。 当气体浓度增加使得差值变得大于预定浓度阈值时，产生高浓度信号以闭合翼片（34），并且通过使用系数k 2来计算基值B（n） 其基于B（n）= B（n-1）+ k 2 {S（n）-B（n-1）}小于k 1）。
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公开(公告)号：US08823384B2
公开(公告)日：2014-09-02
申请号：US13444057
申请日：2012-04-11
CPC分类号： G01N15/0656 , F01N2560/05
摘要： There is provided a fine particle detection system with a fine particle sensor, a cable and a sensor drive control device. The fine particle sensor has an ion source unit with first and second electrodes, a particle charging unit and inner and outer sensor casings. The cable has a power supply wiring line connected to the second electrode, an inner shield line electrically continuous with the inner sensor casing and an outer shield line electrically continuous with the outer sensor casing. The sensor drive control device has an ion-source power supply circuit, a signal current detection circuit, an inner circuit casing electrically continuous with a first output terminal of the ion-source power supply circuit and surrounding the ion-source power supply circuit and an outer circuit casing connected to the ground potential and shielding the ion-source power supply circuit, the signal current detection circuit and the inner circuit casing.
摘要翻译： 提供了具有细颗粒传感器，电缆和传感器驱动控制装置的精细粒子检测系统。 微粒传感器具有带有第一和第二电极的离子源单元，粒子充电单元和内部和外部传感器外壳。 电缆具有与第二电极连接的电源配线，与内传感器外壳电连接的内屏蔽线和与外传感器外壳电气连接的外屏蔽线。 传感器驱动控制装置具有离子源电源电路，信号电流检测电路，与离子源电源电路的第一输出端子电连接并且包围离子源电源电路的内部电路壳体，以及 外部电路壳体连接到地电位并屏蔽离子源电源电路，信号电流检测电路和内部电路外壳。
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10.发明授权Method of and apparatus for detecting an activated condition of a wide range air-fuel ratio sensor 失效用于检测大范围空燃比传感器的激活状态的方法和装置
公开(公告)号：US5976350A
公开(公告)日：1999-11-02
申请号：US920722
申请日：1997-08-29
申请人： Tessho Yamada , Takeshi Kawai , Yuji Oi , Shigeki Mori , Satoshi Teramoto , Toshiya Matsuoka
发明人： Tessho Yamada , Takeshi Kawai , Yuji Oi , Shigeki Mori , Satoshi Teramoto , Toshiya Matsuoka
IPC分类号： G01N27/419 , F02D41/14 , G01N27/406 , G01N27/407
CPC分类号： F02D41/1494 , G01N27/4065
摘要： A method of detecting an activated condition of a wide range air-fuel ratio sensor is provided. With this method, application of a current to a heater is started idiately after an engine is started (S00). Then, a current Icp for pumping is passed through an electromotive force cell (S10). A lapse of a predetermined time Tin is waited for (S18). After a lapse of time Tin, a voltage Vs across both electrodes of the electromotive force cell is detected (S20) and labeled as Vs0 (S22). Then, application of Icp is suspended (S30) and a routine is held on standby until a time of 25 ms elapses (S35). At the point of time when the time of 25 ms has elapsed, the voltage across the electrodes on the opposite sides of the electromotive force cell is detected (S40) and labeled as Vs1 (S45). A resistance value Rs1 is calculated from Vs0, Vs1 and Icp (S50). The resistance value Rs1 is compared with a value Rss which has been prepared previously (S55) and it is judged, when Rs1 is smaller than Rss, that the electromotive force cell has been put into an activated condition. An apparatus for detecting an activated condition of a wide range air-fuel ratio sensor is also provided.
摘要翻译： 提供一种检测大范围空燃比传感器的激活状态的方法。 利用这种方法，在发动机启动之后，将电流施加到加热器（S00）。 然后，使电流Icp通过电动势电池（S10）。 等待经过预定时间锡（S18）。 经过一段时间后，检测到电动势单元的两个电极之间的电压Vs（S20）并标记为Vs0（S22）。 然后，停止应用Icp（S30），并且程序保持待机直到25ms的时间过去（S35）。 在经过25ms的时间的时刻，检测到电动势单元的相对侧的电极两端的电压（S40），标记为Vs1（S45）。 从Vs0，Vs1和Icp计算电阻值Rs1（S50）。 将电阻值Rs1与先前准备的值Rss进行比较（S55），当Rs1小于Rss时，判断为电动势单元已经处于激活状态。 还提供了用于检测大范围空燃比传感器的激活状态的装置。
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