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针对特种车内空间狭小、光源布局受限这一问题,对光照度及接收光功率进行了理论分析,对光源阵列位置下光照度及光功率的直射和一次反射的分布模型进行了分析与仿真。在光照度需求的约束条件下,根据光功率分布均匀原则提出了特种车辆内部由5个阵列光源形成中心补偿形布局的优化方案。仿真结果表明,在2 m×2 m×1.5 m的狭小空间内,运用该光源布局方案可得到平均接收光功率值为-0.5 d Bm时的光照度范围为333.74~466.44 lx,均匀光照率为79.5%,可同时满足车内照度与数据通信需求。
Aiming at the problem of narrow interior space and limited light source layout, a theoretical analysis of illumination and received light power was carried out. The distribution model of direct and primary reflection of illuminance and optical power under the position of light source was analyzed and simulated. Based on the principle of uniform light power distribution, the optimized scheme of forming the center compensation shape of 5 types of light sources inside a special vehicle is proposed under the constraint of illumination demand. The simulation results show that the illuminance range of 333.74 ~ 466.44 lx with average received optical power value of -0.5 d Bm can be obtained by using the light source layout in a small space of 2 m × 2 m × 1.5 m with a uniform illumination of 79.5 %, Can satisfy the illumination of the car and the data communication demand at the same time.