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Bench-Scale Test Facility for Evaluating the Performance of Thermal Imagers for Fire Service Applications

机译:用于评估消防应用热像仪性能的基准测试设备

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摘要

A bench-scale facility was developed for the evaluation of thermal imaging cameras. Smoke obscuration conditions in the optical smoke cell were characterized by measuring laser light transmittance through the cell. Measurements showed that the laser transmittance along the axial direction of the optical smoke cell was relatively uniform in the upper and lower halves of the cell for various smoke obscuration conditions. The thermal sensitivity of thermal imagers was investigated using the Michelson Contrast (CM) as a performance metric for a bar target viewed through the smoke-filled cell for different background thermal conditions. The results of the study indicate that the optical smoke cell can be utilized as a well-controlled and effective bench-scale test apparatus to evaluate aspects of the performance of thermal imagers for fire service applications.
机译:开发了用于评估热像仪的台式设备。通过测量穿过该烟盒的激光透射率来表征光学烟盒中的烟遮蔽条件。测量表明,在各种烟雾遮蔽条件下,沿光学烟盒轴向的激光透射率在烟盒的上半部和下半部相对均匀。使用迈克尔逊对比度(CM)作为通过烟气电池在不同背景热条件下观察的条形目标的性能指标,对热像仪的热敏性进行了研究。研究结果表明,光学烟雾传感器可作为一种良好控制和有效的台式测试设备,用于评估消防应用中热成像仪性能的各个方面。

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