公开(公告)号：US5621162A

公开(公告)日：1997-04-15

申请号：US590299

申请日：1996-01-23

申请人： Dong H. Yun ,  Chul H. Kwon ,  Kyuchung Lee ,  Hyeon S. Park ,  Hyung K. Hong ,  Hyun W. Shin ,  Sung T. Kim

发明人： Dong H. Yun ,  Chul H. Kwon ,  Kyuchung Lee ,  Hyeon S. Park ,  Hyung K. Hong ,  Hyun W. Shin ,  Sung T. Kim

IPC分类号： G01N27/12 ,  G01N33/02 ,  G01N31/00

CPC分类号： G01N27/125 ,  G01N33/025

摘要： A gas sensor for detecting a gas component from a food item includes a sensing layer having an electrical resistance value that varies in accordance with the concentration and type of the gas component generated from the food item to thereby sense the gas component, first and second electrodes coupled across the sensing layer and connected to a power supply, a heater for heating the gas sensor to a temperature of sensing operation, and a switch connected to an adjustable voltage supply for controlling whether the heater is operated in a first temperature range or in a second temperature range. The sensing layer includes a mixture of SnO.sub.2 and WO.sub.3 in a predetermined ratio.

摘要翻译： 一种用于从食品检测气体成分的气体传感器包括：感测层，其具有根据从食品产生的气体成分的浓度和类型而变化的电阻值，从而感测气体成分，第一和第二电极 耦合在感测层上并连接到电源，用于将气体传感器加热到感测操作的温度的加热器以及连接到可调电压源的开关，用于控制加热器是否在第一温度范围内操作 第二温度范围。 感测层包含预定比例的SnO 2和WO 3的混合物。

公开(公告)号：US5627305A

公开(公告)日：1997-05-06

申请号：US605889

申请日：1996-02-23

申请人： Dong H. Yun ,  Chul H. Kwon ,  Kyuchung Lee ,  Hyung K. Hong ,  Hyeon S. Park ,  Hyun W. Shin ,  Sung T. Kim

发明人： Dong H. Yun ,  Chul H. Kwon ,  Kyuchung Lee ,  Hyung K. Hong ,  Hyeon S. Park ,  Hyun W. Shin ,  Sung T. Kim

IPC分类号： G01N27/00 ,  G01N27/12 ,  G01N33/00 ,  G01N27/04 ,  G01N31/12 ,  G01R3/00

CPC分类号： G01N27/122 ,  G01N27/125

摘要： A gas sensing apparatus is disclosed including a gas sensing device that is self-heated due to an applied voltage, whose resistance variation amount is varied to thereby sense gas; a voltage supply for variably supplying a voltage to the gas sensing device; a current detector for detecting the current flowing through the gas sensing device thereby generating a current-voltage characteristic for the gas sensing apparatus under the effect of a given gas exposure; and a control and judgement portion for controlling the voltage supply to control a variation value of a voltage supplied to the gas sensing device and to determine the kind and density of a gas in an ambient atmosphere, using current-voltage characteristic reference data.

摘要翻译： 公开了一种气体感测装置，其包括由于施加的电压而自加热的气体感测装置，其电阻变化量被改变从而感测气体; 用于向气体感测装置可变地供应电压的电压源; 用于检测流过气体感测装置的电流的电流检测器，从而在给定的气体暴露的作用下产生用于气体检测装置的电流 - 电压特性; 以及控制和判断部分，用于控制电压供应以控制提供给气体感测装置的电压的变化值，并使用电流 - 电压特性参考数据确定环境大气中的气体的种类和密度。

公开(公告)号：US5777207A

公开(公告)日：1998-07-07

申请号：US728757

申请日：1996-10-11

申请人： Dong Hyun Yun ,  Kyuchung Lee ,  Chul Han Kwon ,  Hyung-Ki Hong

发明人： Dong Hyun Yun ,  Kyuchung Lee ,  Chul Han Kwon ,  Hyung-Ki Hong

IPC分类号： G01N27/12 ,  G01N33/00 ,  H01L29/66 ,  H01L49/00

CPC分类号： G01N33/0047 ,  G01N27/12

摘要： Air pollution gas sensor which efficiently detects smell from smoking, ordinary stinks such as TMA and CH3SH, smell of Kimchi, acetaldehyde, and etc. and also a method for fabricating the same is revealed and described including a substrate, a heater formed on said substrate, electrodes each formed on said substrate insulated from the heater, and a sensing layer formed of SnO.sub.2, including WO.sub.3 on said substrate including said electrodes, with the method for fabricating the gas sensor including the steps of forming the heater on the substrate, forming the electrodes on the substrate insulated from the heater, and forming a sensing layer of SnO.sub.2 including WO.sub.3 on the substrate including the electrodes.

摘要翻译： 空气污染气体传感器，其有效地检测吸烟的气味，常见的臭味如TMA和CH3SH，泡菜的气味，乙醛等，并且揭示并描述了其制造方法，其包括基底，形成在所述基底上的加热器 在与所述加热器绝缘的所述基板上形成的电极，以及由包括所述电极的所述基板上的包含WO 3的SnO 2形成的感测层，所述气体传感器的制造方法包括在所述基板上形成所述加热器的步骤， 基板上的电极与加热器绝缘，并且在包括电极的基板上形成包括WO 3的SnO 2感测层。

公开(公告)号：US5866800A

公开(公告)日：1999-02-02

申请号：US548387

申请日：1995-10-26

申请人： Hyeon Soo Park ,  Hyun Woo Shin ,  Chul Han Kwon ,  Hyung Ki Hong ,  Dong Hyun Yun ,  Kyuchung Lee ,  Sung Tae Kim

发明人： Hyeon Soo Park ,  Hyun Woo Shin ,  Chul Han Kwon ,  Hyung Ki Hong ,  Dong Hyun Yun ,  Kyuchung Lee ,  Sung Tae Kim

IPC分类号： G01N27/00 ,  G01N27/12 ,  G01N27/26

CPC分类号： G01N27/12

摘要： A gas sensor and a method for fabricating the same includes a semiconductor substrate, a supporting layer formed on the semiconductor substrate, the supporting layer being electrically insulative and having a pattern groove formed therein, a heater formed in the pattern groove, an electrically insulating layer formed on the heater and the supporting layer, an electrode formed on the insulating layer, and a sensing layer formed on the electrode and the insulating layer to detect a target gas of interest according to a measured change in electrical conductivity or resistance thereof.

摘要翻译： 气体传感器及其制造方法包括半导体基板，形成在半导体基板上的支撑层，支撑层是电绝缘的，其中形成有图形槽，形成在图案槽中的加热器，电绝缘层 形成在加热器和支撑层上的电极，形成在绝缘层上的电极，以及形成在电极和绝缘层上的感测层，以根据测量的导电性或电阻的变化来检测目标气体。