| 摘要 |
An infrared detection system that may note changes of temperature over time in various fields of view of a scene. The system may use an array of long wave infrared detectors to sense early or late stages of a fire. The system may check numerous fields of view. It may have a fixture with a lens for each field of view. Each lens may have its respective field of view focused on the array. All but one lens may be shuttered or closed from detecting its respective field of view at a time. The system may have a processor with a memory to record the temperatures from the array over time. Variation of temperature in one spot or another of a field of view may be an indication of an imminent fire or another situation of concern.
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