| 发明名称 | Dynamic coded filter gas detection | ||
| 摘要 | A device for detecting gas concentrations includes a movable coded filter. An optical element is positioned to receive gas filtered light and spectrally separate the gas filtered light. A photo detector is positioned to receive the spectrally separated light through slits in the moveable coded filter to provide an AC signal representative of a selected gas. | ||
| 申请公布号 | US8928879(B2) | 申请公布日期 | 2015.01.06 |
| 申请号 | US201213484005 | 申请日期 | 2012.05.30 |
| 申请人 | Honeywell International Inc. | 发明人 | Youngner Daniel;Fritz Bernard S.;Liu Yue;Cox James A. |
| 分类号 | G01J3/04;G01J3/18;G01N21/35;G01J3/28;G01J3/457;G01J3/14;G01J3/02;G01N21/31 | 主分类号 | G01J3/04 |
| 代理机构 | Schwegman Lundberg & Woessner, P.A. | 代理人 | Schwegman Lundberg & Woessner, P.A. |
| 主权项 | 1. A device for detecting gas concentrations comprising: a movable coded filter; an optical element positioned to receive gas filtered light and spectrally separate the gas filtered light; and a photo detector positioned to receive the spectrally separated light through slits in the moveable coded filter to provide an AC signal representative of a selected gas, wherein the slits are positioned to pass at least two AC components of the spectrally separated light corresponding to a gas not of interest such that the AC components cancel out on the photo detector. | ||
| 地址 | Morristown NJ US | ||