Intelligent visible lighting and environmental monitoring system in electromagnetic sensitive scene
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摘要: 传统无线通信的方式在电磁敏感场景下难免会对信号造成干扰, 为了不影响通信系统的稳定性与可靠性, 结合可见光具有对电磁不敏感的特性, 搭建了以可见光作为信息载体在电磁敏感环境下实现兼顾照明的智慧系统。首先采用以0.5m×0.5m×0.3m的立体空间作为房间模型、对室内光源布局进行合理的布局优化方法, 使其达到国际化室内照明标准; 其次设计了系统的上下行链路以及信号帧结构, 实现了稳定的信息传输; 最后搭建了系统的实物模型, 并对系统进行了调试。结果表明, 本系统可稳定地实现照明及室内环境参量的实时监控与数据传输, 误比特率低于10-6, 能够稳定通信10h以上。该研究为大场景的布设参量提供了参考。Abstract: Traditional wireless communication will inevitably interfere with signals in electromagnetic sensitive scenarios. In order not to affect the stability and reliability of communication systems, combined with insensitive characteristic of visible light to electromagnetic field, a smart and lighting system with visible light as information carrier was built in electromagnetic sensitive environment. Firstly, 3-D space of 0.5m×0.5m×0.3m was used as room model and reasonable layout optimization method of indoor light source was carried out to make it meet the international indoor lighting standards. Secondly, the upstream and downlink of system and the signal frame structure were designed. The stable information transmission was realized. Finally, the physical model of the system was built and the system was debugged. The results show that the system can stably realize real-time monitoring and data transmission of lighting and indoor environment parameters. Bit error rate is less than 10-6. It can stably communicate for more than 10h. This study provides a reference for the layout parameters of large scenes.
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Table 1 Experimental parameters of system
name parameter value environmental parameters location 508, 5th floor, Xi’an University of Technology, temperature 23℃, environment no shading was used model size (length, width, height) 0.5m×0.5m×0.3m the power of the LED 3W photodetector photosensitive area: 3.5mm×3.5mm, response wavelength λ: 400nm~1100nm L 0.1m 
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