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首页> 外文期刊>Science, Measurement & Technology, IET >BriGuard: a lightweight indoor intrusion detection system based on infrared light spot displacement
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BriGuard: a lightweight indoor intrusion detection system based on infrared light spot displacement

机译：BriGuard：一种基于红外光斑位移的轻型室内入侵检测系统

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摘要

Indoor intrusion detection systems are widely implemented in many special departments and environments. Owing to the special target market, several specific features of such systems are required including high accuracy, high performance, high concealment and ease of deployment. In this study, the authors proposed an infrared light spot displacement-based surveillance system for indoor intrusion detection. This system, named BriGuard, shares a similar idea with radar. A 940 nm infrared light beam goes through an optical diffraction grating to generate light spot matrix imagery in the view of a complementary metal oxide semiconductor image sensor. The coordinates of the light spots are extracted and recorded. When someone enters the monitored area, the imaging plane changes and leads to a variation of the pre-recorded light spots coordinates. The light beam is modulated in order to be distinguished from the light in the environment. The lightweight algorithms require little computation power and data storage. BriGuard achieves a nearly zero false detection rate while covering a distance up to 10 m. It can process 30 full HD (1920 × 1080) frames per second. More importantly, because of unnoticeable infrared lights and very small form factor, the whole detection equipment is very hard to observe.
机译：室内入侵检测系统已在许多特殊部门和环境中广泛实施。由于特殊的目标市场，因此需要这种系统的几个特定功能，包括高精度，高性能，高隐蔽性和易于部署。在这项研究中，作者提出了一种基于红外光斑位移的室内入侵检测监视系统。这个名为BriGuard的系统与雷达也有类似的想法。从互补金属氧化物半导体图像传感器的角度来看，940 nm的红外光束穿过光学衍射光栅以生成光点矩阵图像。提取并记录光斑的坐标。当有人进入监视区域时，成像平面发生变化并导致预先记录的光斑坐标发生变化。光束被调制以便与环境中的光区分开。轻量级算法几乎不需要计算能力和数据存储。 BriGuard的错误检测率几乎为零，而覆盖范围最远为10 m。它每秒可以处理30个全高清（1920×1080）帧。更重要的是，由于红外灯不明显且外形很小，因此整个检测设备很难观察到。

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