基于OpenGL的被动红外探测器三维仿真研究

被动红外探测器是入侵报警系统中的关键组成部分,其探测空间是系统设计和效能评估中的首要考核指标。然而,由于探测空间具有不可见和无法直接感知的特点,难以对探测范围进行直观有效的考核。基于视景仿真平台Vega Prime和开放图形库OpenGL,设计并实现了被动红外探测器三维仿真系统。根据探测器的性能参数、安装角度和安装位置,可自动计算并展现该探测器的可视化探测空间。实验结果表明,可视化探测空间与真实探测空间基本符合,能够满足入侵报警系统智能辅助设计和效能评估的要求,具有较强的实用性。

Research on Visual Simulation of Detection Area of PIR Motion Detector Based on OpenGL

The PIR motion detector is a key component in the intrusion and hold-up systems, and its detection area is primary evaluation index in system design and efficiency assessment process. However, due to the invisible feature of its detection area, it is hard to give an intuitive effective assessment for its protection area. Based on visual simulation platform Vega Prime and open graphics library OpenGL, this paper designs and implements a 3D visual simulation platform for simulating the detection area of PIR motion detector, which could calculate a visual detection area according to given performance parameters, installation angle and location of a PIR detector automatically. The experimental results show that the visual detection area matches with the real detection space basically, is able to meet the requirements of intelligent computer aided design and efficiency assessment process for intrusion and hold-up systems.