军用车辆灭火抑爆系统中光学探测温度适应技术

针对军用装甲车辆乘员舱的灭火抑爆系统探测火情的需要,提出2种调整光学探测器的探测灵敏度的解决方案。简要分析光学探测技术的原理及分类,讨论各种光学探测技术的优点和局限性。介绍光学探测器的选择及温度对光学探测器的影响,重点论述某军用车辆灭火抑爆系统中光学探测器的温度适应技术,采用软件补偿方案对红外1 ms火警阈值、红外1 s积分火警阈值及红外光敏管的老化进行补偿,并多次经过高低温试验进行验证。实验结果表明:在-40～55℃的温度变化范围内,防误报性能完全可以满足国军标对光学探测器的要求。

Optical Detection Temperature Adaptation Technology in Fire Extinguishing and Explosion Suppression Systems on the Military Vehicle

Aiming at the demand of detecting fire in military armored vehicle crew cabin,two solutions for adjusting the detection sensitivity of optical detectors are put forward.It briefly analyzes the principle and classification of optical detection technology,discusses the advantages and limitations of various optical detection technologies.It introduces the selection of optical detector and the influence of temperature on it,then deeply discusses the optical detection temperature adaptation technology in fire extinguishing and explosion suppression systems on certain military vehicle,a software compensation method is used to make up for the burn-in of infrared 1 ms fire threshold,infrared 1 s integrated fire threshold and infrared photosensitive tube,and it is verified repeatedly by high and low temperature test.The experimental results show that the performance of false alarm fully meets the military standard requirements of the optical detector while the temperature is changing from-40 ℃ to 55 ℃.