| 发明名称 | Flame detector having visible light related processing circuits and infrared related circuits respectively coupled to photodiodes to establish instantaneous dc related signal changes and peak-to-peak ac signals over a predetermined time interval | ||
| 摘要 | A flame detector incorporates visible and near infrared sensors in common with processing circuits to form processed instantaneous, dc type, signal values minus an average value and peak-to-peak ranges of values of ac-type signals over a measurement time interval on the order of three seconds. The resulting values are further processed to determine the presence of a fire condition by comparing them to a predetermined threshold. | ||
| 申请公布号 | US9449485(B2) | 申请公布日期 | 2016.09.20 |
| 申请号 | US201414476094 | 申请日期 | 2014.09.03 |
| 申请人 | Honeywell International Inc. | 发明人 | Lapp Theodore Raymond |
| 分类号 | G08B17/12;G01J5/08;G08B29/18 | 主分类号 | G08B17/12 |
| 代理机构 | Conley Rose, P.C. | 代理人 | Conley Rose, P.C. ;Harkins Kristin Jordan |
| 主权项 | 1. A flame detector comprising: a first, visible light sensing photodiode; visible light related processing circuits, coupled to the first photodiode to establish instantaneous dc related signal changes and peak-to-peak ac signals over a predetermined time interval; a second, near infrared sensing photodiode; infrared related processing circuits, coupled to the second photodiode to establish instantaneous dc related signal changes and peak-to-peak ac signals over a predetermined time interval; and control circuits to determine the presence of a fire condition using amplitude components of the processed visible light and near infrared signals. | ||
| 地址 | Morris Plains NJ US | ||