Receiver, fire detection system, and fire detection method

    公开(公告)号:US11761891B2

    公开(公告)日:2023-09-19

    申请号:US17263288

    申请日:2019-06-06

    申请人: NEC Corporation

    摘要: A receiver (10) according to the present disclosure includes: a detection unit (11) including a sensor configured to receive a first optical signal of a wavelength included in an absorption band of water molecules and a second optical signal of a wavelength included in an absorption band of carbon dioxide molecules, a signal processing unit (12) configured to calculate a water vapor concentration and a carbon dioxide concentration from changes of intensities of the first and second optical signals, and a determination unit (13) configured to determine whether or not there is a fire that is caused by alcohol combustion based on the water vapor concentration and the carbon dioxide concentration.

    GAS MEASUREMENT APPARATUS
    4.
    发明申请
    GAS MEASUREMENT APPARATUS 审中-公开
    气体测量装置

    公开(公告)号:US20160097762A1

    公开(公告)日:2016-04-07

    申请号:US14865720

    申请日:2015-09-25

    IPC分类号: G01N33/497

    摘要: A gas measurement apparatus includes: a body unit including a delivery port in which a user's breath is delivered, a gas sensor connected to the inside of the delivery port, and an absorbent housing unit that houses an absorbent; a cover unit capable of being operated to be slid in a predetermined direction with respect to the body unit and thereby being set to one of an open state in which the delivery port and the absorbent housing unit are exposed and a closed state in which the delivery port and the absorbent housing unit are cut off from an outside air, wherein at least in the closed state, a space in which the gas sensor is provided and the inside of the absorbent housing unit are connected to each other.

    摘要翻译: 气体测量装置包括:主体单元,包括其中输送用户呼吸的输送端口,连接到输送口内部的气体传感器和容纳吸收剂的吸收性壳体单元; 盖单元,其能够相对于主体单元沿预定方向被操作,从而被设置为其中暴露出了输送口和吸收性壳体单元的打开状态和关闭状态之一,其中输送 端口和吸收性壳体单元从外部空气切断,其中至少在关闭状态下设置有气体传感器的空间,并且吸收性壳体单元的内部彼此连接。

    Gas Sensor
    5.
    发明申请
    Gas Sensor 有权
    气体传感器

    公开(公告)号:US20090133472A1

    公开(公告)日:2009-05-28

    申请号:US11578106

    申请日:2006-03-07

    IPC分类号: G01N7/00

    摘要: There is provided a highly accurate gas sensor by improving an S/N ratio of a circuit. One ends (1a), (2a), of heat generating element (1) and reference resistor (2) brought into contact with a detected gas are commonly connected, and respective contacts of first switch (3) are respectively connected to respective sides of other terminals (1b), (2b). First switch (3) is connected with power source apparatus (4) for supplying a current to heat generating element (1) or reference resistor (2). Voltage measuring portion (5) for measuring a voltage across both ends generated across both ends of heat generating element (1) or reference resistor (2) is connected in parallel with heat generating element (1) or reference resistor (2) when first switch (3) is switched. Operating portion (6) switches first switch (3) to a side of reference resistor (2) and switches first switch (3) to the side of heat generating element (1) by a predetermined timing by determining a condition of controlling power source apparatus (4) for supplying at least 3 stages of step-like currents to heat generating element (1) from the voltage across both ends generated at reference resistor (2). Heat generating element (1) is continuously supplied with successively at least 3 stages of step-like currents to carry out operation of inputting the voltage across both ends of heat generating element (1) in correspondence with magnitudes of the respective currents to operating portion (6) by way of voltage measuring portion (5) and calculating and outputting a concentration of a detected gas by making the current off.

    摘要翻译: 通过提高电路的S / N比,提供了高精度的气体传感器。 与检测到的气体接触的发热元件(1)和参考电阻(2)的一端(1a),(2a​​)共同连接,第一开关(3)的各个触点分别连接到 其他端子(1b),(2b)。 第一开关(3)与用于向发热元件(1)或参考电阻(2)提供电流的电源装置(4)连接。 用于测量在发热元件(1)或参考电阻器(2)的两端产生的两端的电压的电压测量部分(5)在第一开关时与发热元件(1)或参考电阻器(2)并联连接 (3)被切换。 操作部分(6)将第一开关(3)切换到参考电阻(2)的一侧,并通过确定控制电源装置的状态将预定定时将第一开关(3)切换到发热元件(1)侧 (4),用于从在参考电阻器(2)处产生的两端的电压向发热元件(1)提供至少3级的阶梯状电流。 发热元件(1)依次连续地供给至少三级的阶梯状电流,以对应于各个电流对操作部分的大小进行输入(发热元件(1)的两端的电压)的操作 6),并通过电压测量部分(5)计算并输出检测气体的浓度。

    Gas sensor and control method therefor
    6.
    发明授权
    Gas sensor and control method therefor 失效
    气体传感器及其控制方法

    公开(公告)号:US07418855B2

    公开(公告)日:2008-09-02

    申请号:US11212553

    申请日:2005-08-25

    IPC分类号: G01N25/18

    摘要: A gas sensor includes a gas detection chamber into which a detection gas is introduced, a detecting element and a compensating element each disposed in the gas detection chamber, a detection device which detects the concentration of a detection target gas contained in the detection gas, in accordance with a difference in electrical resistance values between the detecting element and the compensating element, and a dehumidifying element which is provided in the gas detection chamber, and reversibly absorbs water contained in the detection gas and drains off the water absorbed in the dehumidifying element.

    摘要翻译: 气体传感器包括:气体检测室,其中引入检测气体;检测元件和补偿元件,每个设置在气体检测室中;检测装置,其检测检测气体中包含的检测目标气体的浓度; 根据检测元件和补偿元件之间的电阻值的差异,以及设置在气体检测室中的除湿元件,并且可逆地吸收检测气体中包含的水并排出除湿元件中吸收的水。

    Sensor Module Package
    7.
    发明申请
    Sensor Module Package 审中-公开
    传感器模块封装

    公开(公告)号:US20080190174A1

    公开(公告)日:2008-08-14

    申请号:US11913782

    申请日:2005-05-10

    IPC分类号: G01N33/00

    CPC分类号: G01N33/006 G01N33/0014

    摘要: Sensor module package having a housing element (3) with an opening (4) to a sensor cavity (6) for allowing outside air to reach a sensor device (1) positioned in the sensor cavity (6) for sensing a characteristic of the outside air. Sensor electronics (9) are connected to the sensor device (1) for providing an output signal. The sensor device (1) and sensor electronics (9) are positioned on a substrate (2). The sensor cavity (6) is formed by at least a cavity part of the substrate (2), at least a part of the housing element (3) and the opening (4). A cover member (11) is provided with a mechanical firming element (13) for mounting the sensor module package (10) in a vehicle.

    摘要翻译: 传感器模块封装具有壳体元件(3),其具有到传感器腔(6)的开口(4),用于允许外部空气到达位于传感器腔(6)中的传感器装置(1),用于感测外部的特性 空气。 传感器电路(9)连接到传感器装置(1),用于提供输出信号。 传感器装置(1)和传感器电子装置(9)位于基板(2)上。 传感器腔(6)由衬底(2)的至少一个空腔部分,壳体元件(3)和开口(4)的至少一部分形成。 盖构件(11)设置有用于将传感器模块封装(10)安装在车辆中的机械紧固元件(13)。

    Method For Measuring Gases And/Or Minimizing Cross-Sensitivities In Fet-Based Gas Sensors
    8.
    发明申请
    Method For Measuring Gases And/Or Minimizing Cross-Sensitivities In Fet-Based Gas Sensors 有权
    用于测量气体和/或最小化基于气体传感器的交叉敏感性的方法

    公开(公告)号:US20080016949A1

    公开(公告)日:2008-01-24

    申请号:US11587173

    申请日:2005-04-22

    IPC分类号: G01N7/00 G01N33/00

    CPC分类号: G01N27/4143 G01N33/006

    摘要: A gas sensor based on a field effect transistor (“FET”) evaluates both a change in work function of a gas-sensitive layer of the FET and a change in the capacitance of the layer. Thus, two physically independent signals are read from the gas-sensitive layer, each signal representing a sensitivity to a different gas. This reduces the effect of cross-sensitivities; that is, of one gas on the target gas. The underlying physical mechanisms, the first causing a change in the work function in a reaction with gases and the second causing a change in the capacitance of the sensitive layer, are widely different. Because of this, the two parameters demonstrate different gas sensitivities. If the reactions to both gases are known, the effect of the interfering gas on the sensor signal can be compensated for, and with this the concentration of the target gas can be determined.

    摘要翻译: 基于场效应晶体管(“FET”)的气体传感器评估FET的气敏层的功函数变化和层的电容变化。 因此,从气体敏感层读取两个物理独立的信号,每个信号表示对不同气体的敏感性。 这降低了交叉敏感性的影响; 也就是目标气体上的一种气体。 潜在的物理机制,首先引起与气体反应的功函数的变化,第二个导致敏感层的电容变化的物理机制是不同的。 因此,这两个参数表现出不同的气体敏感性。 如果对两种气体的反应是已知的,则可以补偿干扰气体对传感器信号的影响,并且可以确定目标气体的浓度。

    Method for producing and managing a sensor
    9.
    发明申请
    Method for producing and managing a sensor 审中-公开
    传感器的制造和管理方法

    公开(公告)号:US20050130338A1

    公开(公告)日:2005-06-16

    申请号:US10990968

    申请日:2004-11-18

    IPC分类号: G01N27/407 H01L21/00

    摘要: A method for producing a sensor (1) for detecting at least one gas constituent in the exhaust gas of an internal-combustion engine. An electrode structure (3), acting as a capacitor, is applied to a substrate (2). A gas-permeable zeolite layer (6) is applied to the electrode structure (3) and the substrate (2). After the application of the zeolite layer (6), the sensor (1) is heated in the presence of water vapor. During the heating, a voltage is applied to the electrode structure (3). A bias voltage, superimposed on the operating voltage of the electrode structure 3, is applied to a first connection 4 and/or to a second connection 5 of the electrode structure 3.

    摘要翻译: 一种用于产生用于检测内燃机的排气中的至少一种气体成分的传感器(1)的方法。 作为电容器的电极结构(3)被施加到基板(2)上。 将透气性沸石层(6)施加到电极结构(3)和基板(2)上。 在施加沸石层(6)之后,在水蒸汽存在下加热传感器(1)。 在加热期间,向电极结构(3)施加电压。 叠加在电极结构3的工作电压上的偏置电压施加到电极结构3的第一连接4和/或第二连接5。

    Infrared monitor and control for vapor hydrogen peroxide processing techniques
    10.
    发明申请
    Infrared monitor and control for vapor hydrogen peroxide processing techniques 有权
    蒸汽过氧化氢加工技术的红外监测和控制

    公开(公告)号:US20030021724A1

    公开(公告)日:2003-01-30

    申请号:US10191821

    申请日:2002-07-09

    发明人: Iain F. McVey

    摘要: A vaporizer (14) supplies hydrogen peroxide and water vapor to a high level disinfection or sterilization region (20). Mid-infrared light detectors (32) detect light in the mid-infrared range which has traversed a region of the treatment chamber in a first narrow spectrum centered at 8,000 nanometers which is absorbed by the hydrogen peroxide vapor, a second narrow spectrum which is absorbed by the water vapor, and a third spectrum that is absorbed by neither the hydrogen peroxide vapor nor the water vapor. From these measurements, an absorbance or transmittance is determined (40) from which the concentrations of hydrogen peroxide and water vapor are determined (42). Monitored temperature (44) and the determined concentrations are converted into a percent saturation (54). The supply of hydrogen peroxide and water vapor to the chamber is controlled (60) in accordance with the determined percent saturation.

    摘要翻译: 蒸发器(14)将高压消毒或灭菌区域(20)供应过氧化氢和水蒸气。 中红外光检测器(32)检测在中心红外范围内的光,该中心红外范围已经穿过处理室的区域,该第一狭窄光谱以8,000纳米为中心,其被过氧化氢蒸气吸收,第二窄光谱被吸收 通过水蒸汽和不被过氧化氢蒸气和水蒸汽吸收的第三光谱。 从这些测量中,确定吸光度或透射率(40),从中确定过氧化氢和水蒸气的浓度(42)。 监测温度(44)和确定的浓度转化为饱和百分比(54)。 根据确定的饱和百分比控制向室内供应过氧化氢和水蒸汽(60)。