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公开(公告)号：US20120247184A1
公开(公告)日：2012-10-04
申请号：US13432764
申请日：2012-03-28
IPC分类号： G01N25/00
CPC分类号： G01N27/18
摘要： A gas detecting apparatus including: a heating resistor exposed to a detected atmosphere, and a control circuit for controlling the heating resistor at two different temperatures, wherein each output voltage from the heating resistor corresponding to the different temperatures is detected when the heating resistor is controlled to the different temperatures, and a state of a gas is obtained based on the detected output voltage. For example, two different offset voltages are set, each potential difference obtained by subtracting each of the offset voltages from corresponding detected output voltages is amplified and the state of the gas is obtained using the amplified potential differences.
摘要翻译： 一种气体检测装置，包括：暴露于检测到的气氛的加热电阻器和用于在两个不同温度下控制加热电阻器的控制电路，其中当加热电阻器被控制时检测来自与不同温度对应的加热电阻器的每个输出电压 到不同的温度，并且基于检测到的输出电压获得气体的状态。 例如，设定两个不同的偏移电压，通过从对应的检测输出电压中减去每个偏移电压而获得的每个电位差被放大，并且使用放大的电位差来获得气体的状态。
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公开(公告)号：US09285333B2
公开(公告)日：2016-03-15
申请号：US13978038
申请日：2012-02-09
CPC分类号： G01N27/18 , H01M8/04447 , H01M2250/20 , Y02E60/50 , Y02T90/32
摘要： A combustible gas detection device includes an energization control circuit which controls the switching of the energization state of a heat generation resistor every predetermined time period such that the heat generation resistor alternately has resistances corresponding to two predetermined temperatures, a temperature measurement resistor disposed on the same substrate on which the heat generation resistor is disposed, where its resistance changes with the environmental temperature, a gas concentration computation section which calculates the combustible gas concentration by using a voltage generated across the heat generation resistor which is detected when electricity is supplied to the heat generation resistor and the environmental temperature based on a voltage change caused by a change in the resistance of the temperature measurement resistor. The predetermined time period is such that a change in the environmental temperature which occurs when the energization control circuit switches the energization state, falls within a range of 0.5° C.
摘要翻译： 一种可燃性气体检测装置，其特征在于，具有通电控制电路，其在规定的时间周期内控制发热电阻的通电状态的切换，使得所述发热电阻交替地具有对应于两个规定温度的电阻，设置在所述发热电阻器上的温度测量电阻器 其中其电阻随着环境温度而变化的气体浓度计算部，通过使用在供给热量时检测出的发热电阻器两端产生的电压来计算可燃气体浓度的气体浓度计算部 基于由温度测量电阻器的电阻变化引起的电压变化的环境温度。 预定时间段使得当通电控制电路切换通电状态时发生的环境温度的变化落在0.5℃的范围内。
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公开(公告)号：US09244032B2
公开(公告)日：2016-01-26
申请号：US13432764
申请日：2012-03-28
IPC分类号： G01N27/18
CPC分类号： G01N27/18
摘要： A gas detecting apparatus including: a heating resistor exposed to a detected atmosphere, and a control circuit for controlling the heating resistor at two different temperatures, wherein each output voltage from the heating resistor corresponding to the different temperatures is detected when the heating resistor is controlled to the different temperatures, and a state of a gas is obtained based on the detected output voltage. For example, two different offset voltages are set, each potential difference obtained by subtracting each of the offset voltages from corresponding detected output voltages is amplified and the state of the gas is obtained using the amplified potential differences.
摘要翻译： 一种气体检测装置，包括：暴露于检测到的气氛的加热电阻器和用于在两个不同温度下控制加热电阻器的控制电路，其中当加热电阻器被控制时检测来自与不同温度对应的加热电阻器的每个输出电压 到不同的温度，并且基于检测到的输出电压获得气体的状态。 例如，设定两个不同的偏移电压，通过从对应的检测输出电压中减去每个偏移电压而获得的每个电位差被放大，并且使用放大的电位差来获得气体的状态。
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公开(公告)号：US20130298638A1
公开(公告)日：2013-11-14
申请号：US13978038
申请日：2012-02-09
IPC分类号： G01N27/18
CPC分类号： G01N27/18 , H01M8/04447 , H01M2250/20 , Y02E60/50 , Y02T90/32
摘要： A combustible gas detection device includes an energization control circuit which controls the switching of the energization state of a heat generation resistor every predetermined time period such that the heat generation resistor alternately has resistances corresponding to two predetermined temperatures, a temperature measurement resistor disposed on the same substrate on which the heat generation resistor is disposed, where its resistance changes with the environmental temperature, a gas concentration computation section which calculates the combustible gas concentration by using a voltage generated across the heat generation resistor which is detected when electricity is supplied to the heat generation resistor and the environmental temperature based on a voltage change caused by a change in the resistance of the temperature measurement resistor. The predetermined time period is such that a change in the environmental temperature which occurs when the energization control circuit switches the energization state, falls within a range of 0.5° C.
摘要翻译： 一种可燃性气体检测装置，其特征在于，具有通电控制电路，其在规定的时间周期内控制发热电阻的通电状态的切换，使得所述发热电阻交替地具有对应于两个规定温度的电阻，设置在所述发热电阻器上的温度测量电阻器 其中其电阻随着环境温度而变化的气体浓度计算部，通过使用在供给热量时检测出的发热电阻器两端产生的电压来计算可燃气体浓度的气体浓度计算部 基于由温度测量电阻器的电阻变化引起的电压变化的环境温度。 预定时间段使得当通电控制电路切换通电状态时发生的环境温度的变化落在0.5℃的范围内。
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公开(公告)号：US06913677B2
公开(公告)日：2005-07-05
申请号：US10242403
申请日：2002-09-13
IPC分类号： G01N27/416 , G01N27/407 , G01N33/00 , H01M8/04 , H01M8/10
CPC分类号： G01N27/4074 , G01N33/005
摘要： A hydrogen gas sensor is configured such that an O-ring 21 is disposed within a measurement chamber 11a in order to seal against a first support element 9a and against a proton conduction layer 1. This O-ring 21 assumes the form of a rectangular frame that surrounds a first electrode 3, and a substantially circular cross section, and is elastic, heat resistant, and durable. A first metal plate 23a and a second metal plate 23b are disposed from the outside on opposite support elements 9a and 9b, respectively. The hydrogen gas sensor of the present embodiment has a pair of right-hand and left-hand through-holes 29 formed therein so as to extend along the thickness direction thereof. Bolts 31 are inserted into the corresponding through-holes 29. By fastening the metal plates 23a and 23b from the outside by means of the bolts 31 and nuts 33, the opposite support elements 9a and 9b are fastened, thereby clamping the entire hydrogen sensor in a unitary condition.
摘要翻译： 氢气传感器被配置为使得O形环21设置在测量室11a内以便密封第一支撑元件9a并抵靠质子传导层1.该O形环21呈现为 围绕第一电极3的矩形框架和基本圆形的横截面，并且是弹性的，耐热的和耐用的。 第一金属板23a和第二金属板23b分别从外部设置在相对的支撑元件9a和9b上。 本实施方式的氢气传感器具有沿其厚度方向延伸的一对形成在其中的右侧和左侧通孔29。 螺栓31插入对应的通孔29.通过螺栓31和螺母33从外部紧固金属板23a和23b，将相对的支撑元件9a和9b紧固，从而将 整个氢传感器处于一体状态。
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公开(公告)号：US08826725B2
公开(公告)日：2014-09-09
申请号：US13025192
申请日：2011-02-11
CPC分类号： G01N25/18
摘要： A gas detector for use in, for example, measuring the concentration of flammable gas or detecting leakage of flammable gas. The gas detector has a gas detection element in which at least a heat-generating resistor and an insulation layer are laminated on a semiconductor substrate made of silicon while the insulation layer encloses the heat-generating resistor. The gas detector detects flammable gas on the basis of temperature and resistance of the heat-generating resistor which vary according to flammable gas. In the gas detection element, a protection layer in the form of a gas impermeable oxide film is provided on its outermost surface which comes into contact with an environmental atmosphere that contains flammable gas. Thus, alkali resistance is ensured. Since the protection layer is impermeable to gas, entry of impurities (organic silicon) contained in the environmental atmosphere into the protection layer is restrained, whereby output is stabilized and becomes accurate.
摘要翻译： 气体检测器，用于例如测量可燃气体的浓度或检测可燃气体的泄漏。 气体检测器具有气体检测元件，其中至少一个发热电阻器和绝缘层层压在由硅制成的半导体衬底上，而绝缘层包围发热电阻器。 气体检测器基于根据可燃气体而变化的发热电阻器的温度和电阻来检测可燃气体。 在气体检测元件中，在与含有易燃气体的环境气氛接触的最外表面上设置有不透气氧化膜形式的保护层。 因此，确保耐碱性。 由于保护层对于气体是不可渗透的，所以抑制了包含在环境气氛中的杂质（有机硅）进入保护层，由此输出稳定并变得准确。
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公开(公告)号：US06764582B2
公开(公告)日：2004-07-20
申请号：US10290162
申请日：2002-11-08
IPC分类号： G01N27407
CPC分类号： G01N27/4074 , G01N33/005
摘要： A gas sensor suitable for measuring hydrogen concentration, including a proton conductive layer (1); a first electrode (3) and a second electrode (5) provided on the proton conductive layer (1); a gas diffusion-limiting inlet (19) provided between the first electrode (3) and a measurement gas atmosphere (6) containing hydrogen gas; and a gas diffusion-limiting outlet (21) provided between the second electrode (5) and the atmosphere (6); wherein the ratio (a/b) between the diffusion resistance (a) of the diffusion limiting portion (19) and the diffusion resistance (b) of the gas outlet portion (21) is not greater than 2.
摘要翻译： 适用于测量氢浓度的气体传感器，包括质子传导层（1）; 设置在质子传导层（1）上的第一电极（3）和第二电极（5）。 设置在第一电极（3）和含有氢气的测量气体气氛（6）之间的气体扩散限制入口（19） 和设置在第二电极（5）和大气（6）之间的气体扩散限制出口（21）。 其中所述扩散限制部分（19）的扩散阻力（a）与所述气体出口部分（21）的扩散阻力（b）之比（a / b）不大于2。
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公开(公告)号：US20120204623A1
公开(公告)日：2012-08-16
申请号：US13025192
申请日：2011-02-11
IPC分类号： G01N25/18
CPC分类号： G01N25/18
摘要： A gas detector for use in, for example, measuring the concentration of flammable gas or detecting leakage of flammable gas. The gas detector has a gas detection element in which at least a heat-generating resistor and an insulation layer are laminated on a semiconductor substrate made of silicon while the insulation layer encloses the heat-generating resistor. The gas detector detects flammable gas on the basis of temperature and resistance of the heat-generating resistor which vary according to flammable gas. In the gas detection element, a protection layer in the form of a gas impermeable oxide film is provided on its outermost surface which comes into contact with an environmental atmosphere that contains flammable gas. Thus, alkali resistance is ensured. Since the protection layer is impermeable to gas, entry of impurities (organic silicon) contained in the environmental atmosphere into the protection layer is restrained, whereby output is stabilized and becomes accurate.
摘要翻译： 气体检测器，用于例如测量可燃气体的浓度或检测可燃气体的泄漏。 气体检测器具有气体检测元件，其中至少一个发热电阻器和绝缘层层压在由硅制成的半导体衬底上，而绝缘层包围发热电阻器。 气体检测器基于根据可燃气体而变化的发热电阻器的温度和电阻来检测可燃气体。 在气体检测元件中，在与含有易燃气体的环境气氛接触的最外表面上设置有不透气氧化膜形式的保护层。 因此，确保耐碱性。 由于保护层对于气体是不可渗透的，所以抑制了包含在环境气氛中的杂质（有机硅）进入保护层，由此输出稳定并变得准确。
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公开(公告)号：US06533911B1
公开(公告)日：2003-03-18
申请号：US09590189
申请日：2000-06-09
申请人： Hiroki Fujita , Shoji Kitanoya , Kenji Kato , Tomohiro Fuma , Ryuji Inoue , Takafumi Oshima
发明人： Hiroki Fujita , Shoji Kitanoya , Kenji Kato , Tomohiro Fuma , Ryuji Inoue , Takafumi Oshima
IPC分类号： G01N27407
CPC分类号： G01N27/4075 , G01N27/4067
摘要： A device and method for measuring combustible-gas concentration and a device and method for measuring hydrocarbon-gas concentration, which exhibit low dependence on oxygen concentration variations as well as low temperature dependence. Paste is applied to the inner surface of a closed-bottom cylindrical solid electrolyte element, thereby forming a layer serving as a reference electrode. Plating with platinum is performed, so as to form a layer serving as a first detection electrode, on the outer surface of the solid electrolyte element only at a portion extending from an end portion of the solid electrolyte element to the vicinity of the interface between a heating resistor and a heating-resistor lead portion, which are formed within a heater element contained in the cylindrical solid electrolyte element. Paste which contains gold powder and 10 parts of indium oxide is applied onto the platinum-plating layer so as to form a layer serving as a second detection electrode, followed by firing. Subsequently, a diffusion layer containing spinel is formed by thermal spraying on the surface of a detection electrode. The heater element is disposed in the solid electrolyte element such that an end portion abuts an inner bottom portion of the solid electrolyte element. Lead wires for measuring internal resistance, which extend from the reference electrodes, and a lead wire extending from the detection electrode are connected to a temperature controller.
摘要翻译： 用于测量可燃气体浓度的装置和方法以及测量烃 - 气体浓度的装置和方法，其对氧浓度变化的依赖性低以及低温依赖性。 将糊状物施加到封闭底部的圆柱形固体电解质元件的内表面，从而形成用作参考电极的层。 进行铂的电镀，以形成用作第一检测电极的层，仅在固体电解质元件的外表面上，仅在从固体电解质元件的端部延伸到位于固体电解质元件的界面附近的部分 加热电阻器和加热电阻器引线部分，其形成在容纳在圆柱形固体电解质元件中的加热器元件内。 将含有金粉末和10份氧化铟的浆料施加到铂镀层上，以形成用作第二检测电极的层，随后进行烧制。 随后，通过热电喷涂在检测电极的表面上形成含有尖晶石的扩散层。 加热器元件设置在固体电解质元件中，使得端部邻接固体电解质元件的内部底部。 用于测量从参考电极延伸的内部电阻的引线和从检测电极延伸的引线连接到温度控制器。
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公开(公告)号：US6136170A
公开(公告)日：2000-10-24
申请号：US997738
申请日：1997-12-24
申请人： Ryuji Inoue , Tomohiro Fuma , Shoji Kitanoya , Yumi Mizutani , Masahito Kida , Takafumi Oshima , Takashi Hibino
发明人： Ryuji Inoue , Tomohiro Fuma , Shoji Kitanoya , Yumi Mizutani , Masahito Kida , Takafumi Oshima , Takashi Hibino
IPC分类号： G01N27/406 , G01N27/407 , G01N27/417 , G01N27/419 , G01N33/00 , G01N27/26
CPC分类号： G01N27/417 , G01N27/4065 , G01N27/4075 , G01N27/419 , G01N33/0047
摘要： The present invention provides an apparatus for measuring the concentration of a constituent to be detected in exhaust gas, which apparatus is capable of detecting with a high accuracy the concentration of the constituent to be detected in exhaust gas even though oxygen concentration in the exhaust gas varies. In an exhaust gas sensor 1 for use in the measuring apparatus, exhaust gas is introduced into spaces 15, 16 on both sides of an oxygen concentration cell element 4, and the oxidation catalyst activities of first to third electrodes 11 to 13 are adjusted so that there occurs a difference between the space 15 and the space 16 in consumption of the constituent to be detected, which consumption is caused by the oxidation of the constituent. Thus a concentration cell electromotive force is generated in the oxygen concentration cell element 4, and an oxygen pump element 3 pumps oxygen into or out of the space 15 so that the electromotive force is held at an target value EC not more than 10 mV. The pump current at this time is taken as the detection output on the constituent to be detected. The strengths of the oxygen concentration cell element 4 and of the oxygen pump element 3 can be increased by the provision of an integrated sintered body in which the elements 4 and 3 are laminated together with the space 15 formed between the first electrode 11 and the second electrode 12. Besides, the accuracy of detecting the constituent to be detected can be improved by the control over the temperature of the oxygen concentration cell element 4 and by the temperature compensation to the pump current.
摘要翻译： 本发明提供了一种用于测量排气中要检测的成分浓度的装置，该装置能够高精度地检测排气中的待检测物质的浓度，即使废气中的氧浓度变化 。 在用于测定装置的废气传感器1中，将废气引入到氧浓度电池元件4的两侧的空间15,16中，调整第一〜第三电极11〜13的氧化催化剂活性， 在被检测成分消耗的空间15和空间16之间存在差异，该消耗是由成分的氧化引起的。 因此，在氧浓度电池元件4中产生浓度电池电动势，并且氧气泵元件3将氧气输入到空间15中或从空间15排出，使得电动势保持在不大于10mV的目标值EC。 此时的泵电流被作为要检测的成分的检测输出。 可以通过提供一体的烧结体来增加氧浓度电池元件4和氧气泵元件3的强度，其中元件4和3与形成在第一电极11和第二电极11之间的空间15层叠在一起 电极12.此外，通过控制氧浓度电池元件4的温度以及对泵电流的温度补偿，可以提高检测成分的检测精度。
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