中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

14 records (took 0.012 seconds)

    NDIR glucose detection in liquids
    2.
    发明授权
    NDIR glucose detection in liquids 有权

    公开(公告)号：US10241044B2

    公开(公告)日：2019-03-26

    申请号：US16056531

    申请日：2018-08-07

    Applicant: Airware, Inc.

    Inventor： Jacob Y Wong ,  Thomas Campbell

    IPC: G01N21/59 ,  G01N33/49 ,  G01N21/35 ,  G01N21/27 ,  G01J3/42 ,  G01N21/3577 ,  G01J3/427 ,  G01N21/47 ,  G01N21/31

    Abstract: For determining concentration of targeted molecules MG in a liquid sample admixed with interfering molecules MJ which overlap their absorption band, a special NDIR sampling and calibration technique is employed. Besides the signal source, a reference and one or more interference sources are added. The selection of the wavelength for the interference sources enables its measured transmittance value to be used for deciding the validity of the calibration curve for molecules MG in the liquid sample. This value can further be used to adjust the calibration curve via a parameter linking the transmittances measured at the signal and interference wavelength channels in order to assure its validity.

    NDIR interference control in liquids
    4.
    发明授权
    NDIR interference control in liquids 有权

    公开(公告)号：US09726601B1

    公开(公告)日：2017-08-08

    申请号：US15594418

    申请日：2017-05-12

    Applicant: Airware, Inc.

    Inventor： Jacob Y Wong ,  Thomas Campbell

    IPC: G01N21/3504

    CPC classification number: G01N21/3504 ,  G01J3/10 ,  G01J3/42 ,  G01J3/427 ,  G01N21/3151 ,  G01N21/3577 ,  G01N21/61 ,  G01N33/49 ,  G01N2021/3159 ,  G01N2201/0696

    Abstract: NDIR is used to determine a concentration of a chosen molecule M in a liquid sample which contains one or more interfering molecules MJ which absorb radiation at the signal wavelength used in the NDIR process by addition of an interference source. M is calculated by electronics which use Rave(t) from a pulsed signal and reference channel output and a calibration curve which is validated by use of RJave(t2) from a pulsed interference and reference channel output. Signal, interference and reference sources are pulsed at a frequency which is sufficiently fast so that a given molecule of M or MJ will not pass in and out of the liquid sampling matrix within the pulsing frequency.

    Methane and water vapor gas sensors integrated into a personal miner's alarm
    6.
    发明授权
    Methane and water vapor gas sensors integrated into a personal miner's alarm 有权
    甲烷和水蒸汽气体传感器集成到个人矿工的报警器中

    公开(公告)号：US08917183B2

    公开(公告)日：2014-12-23

    申请号：US13797738

    申请日：2013-03-12

    Applicant: Airware, Inc.

    Inventor： Jacob Y Wong

    IPC: G08B21/00 ,  G08B21/12

    CPC classification number: G08B21/12 ,  G08B21/16

    Abstract: A miner's personal gas alarm can be mounted in a helmet powered by a rechargeable battery for a light or be self-contained. A visual indicator will generate an alarm when the concentration of gas detected by the gas sensor triggers an alarm condition. An audio alarm can also be generated by the alarm condition. The gas sensor is a non-dispersive infrared (“NDIR”) gas sensor. When the gas sensor detects methane, the alarm condition is triggered by either an abnormally high rate of increase of methane concentration level or by an elevated concentration of methane that is above approximately 500 ppm and substantially below a lower explosion limit of methane (e.g., approximately 10,000 ppm), and the gas sensor is recalibrated whenever the sample concentration of methane falls below an ambient threshold level of methane.

    Abstract translation: 矿工的个人气体报警器可以安装在由可充电电池供电的头盔上，用于照明或自备。 当气体传感器检测到的气体浓度触发报警状态时，视觉指示器将产生报警。 也可以通过报警条件产生音频报警。 气体传感器是非分散红外（“NDIR”）气体传感器。 当气体传感器检测到甲烷时，报警条件由甲烷浓度水平异常升高或甲烷浓度高于约500 ppm并显着低于甲烷爆炸下限触发（例如大约 10,000 ppm），并且每当甲烷的样品浓度低于甲烷的环境阈值水平时，气体传感器将被重新校准。

    Differential temperature source NDIR gas sensing methodology
    7.
    发明授权
    Differential temperature source NDIR gas sensing methodology 有权
    差分温度源NDIR气体检测方法

    公开(公告)号：US08866085B1

    公开(公告)日：2014-10-21

    申请号：US13674473

    申请日：2012-11-12

    Applicant: Airware, Inc.

    Inventor： Jacob Y Wong

    IPC: G01N21/3581 ,  G01N21/3504

    CPC classification number: G01N21/3504

    Abstract: A differential temperature source methodology for the design of a single beam NDIR gas sensor is advanced. This methodology uses a low and a high amplitude voltage cycle to drive a closely approximated Blackbody source for generating at different times two distinct detector outputs obtained from the same detector equipped the same narrow band pass filter but strategically designed for the detection of only a particular portion of the absorption band for the gas of interest. The ratio of the high amplitude cycle detector output over the low amplitude cycle detector output is used to calibrate such an NDIR gas sensor after it is normalized by a similar ratio when there is no target gas present in the sample chamber.

    Abstract translation: 用于设计单束NDIR气体传感器的差分温度源方法是先进的。 该方法使用低和高幅度电压周期来驱动近似近似的黑体源，以在不同时间产生两个不同的检测器输出，该检测器输出从装备有相同窄带通滤波器的相同检测器获得，但是仅针对特定部分进行检测 的感兴趣的气体的吸收带。 当在样品室中不存在目标气体时，高振幅周期检测器输出超过低振幅周期检测器输出的比率用于校准这样的NDIR气体传感器。

    NDIR glucose detection in liquids
    9.
    发明授权
    NDIR glucose detection in liquids 有权

    公开(公告)号：US10041881B2

    公开(公告)日：2018-08-07

    申请号：US15785829

    申请日：2017-10-17

    Applicant: Airware, Inc.

    Inventor： Jacob Y Wong ,  Thomas Campbell

    IPC: G01N21/35 ,  G01N33/49 ,  G01N21/59

    Abstract: A glucose sensor measures glucose molecules in vivo through use of NDIR in which scattering noise is reduced and Absorption Interference Noise (AIN) is suppressed with a reflection technique. Electronics are used to provide an output of glucose concentration glucose in a liquid sampling matrix after it has been determined that a calibration curve is valid after signal processing is used to obtain average ratio values for reflected signal/reference channels and interference/reference channel obtained after a pulsed beam from signal, interference and reference sources is directed at an inclined angle to a normal of a spot of the liquid sampling matrix. The signal, interference and reference sources are each pulsed at a preselected frequency of at least N Hz which is sufficiently fast so that a given molecule of glucose or interfering molecule will not pass in and out of the liquid sampling matrix within the preselected frequency.

    NDIR reflection sampling in liquids
    10.
    发明授权
    NDIR reflection sampling in liquids 有权

    公开(公告)号：US09823185B1

    公开(公告)日：2017-11-21

    申请号：US15644775

    申请日：2017-07-08

    Applicant: Airware, Inc.

    Inventor： Jacob Y Wong ,  Thomas Campbell

    IPC: G01N21/3504

    CPC classification number: G01N21/3504 ,  G01J3/10 ,  G01J3/42 ,  G01J3/427 ,  G01N21/3151 ,  G01N21/3577 ,  G01N21/61 ,  G01N33/49 ,  G01N2021/3159 ,  G01N2201/0696

    Abstract: For determining concentration of a targeted molecule M in a liquid sample admixed with interfering molecules MJ which overlap its absorption band, a NDIR reflection sampling technique is used. Besides the signal source, a reference and an interference source are added. M is calculated by electronics which use Rave(t) from a pulsed signal and reference channel output and a calibration curve which is validated by use of RJava(t2) from a pulsed interference and reference channel output. Signal, interference and reference sources are pulsed at a frequency which is sufficiently fast so that a given molecule of M or MJ will not pass in and out of the liquid sampling matrix within the pulsing frequency.

Patent Agency Ranking